EK-YT-21 User`s Manual V1.0
Contents
1. 35 EK YT 21 BMS Service Direction Chapter 9 Service Direction 9 1 Contact Information Company address No 28 Hehuan Road High tech District Hefei Anhui China Website www ligoo cn Phone 0551 6105555 Fax 0551 6105566 Post code 230088 Technical support Hotline 400 0551 306 26 EK YT 21 BMS System List Appendix A System List System Accessories O oume m ow e 1 set of voltage detection cable Voltage Detective Cables N Strings 1 C N 1 gt line has N 1 voltage detection cables 2 cables for the following 16 strings Temperature Detective Cables 1 Meter 4 temperature sensors at most 4 cables for 16 to 24 strings 1 3 Control Cables Current Sensor Cable Current Sensor Cable Discharge Relay Cable Discharge relay control cable Discharge CAN Cable Discharge CAN control cable Charge CAN Cable Charge CAN control cable Charge Relay Cable Discharge control cable 4 Communication Screen Screen communication and 1 Meter Cables Communication Cable power line variable RS485 Communication RS485 communication 1 Meter 1 line Cables cable variable Switching Signal Cable 2 line Switching signal control cable System Accessories LA 1 SL tem 1 NS lo E RE E E Rio Be EK YT 21 BMS Product Certificate Appendix B Product Certificate AGA E O US S te E Por ant ma NS sheet CERTIFICATE OF THE QUALITY CREDIT SAHARA JER RAM ASP m AE HET HS a hA AS it Re an A AR S2. Remain Capacity Current ampere value of battery it is configured according to the parameters provided by the manufacturer Calibration of Current Used for current zero point correction current calibration values is 0 0A in default condition if the system stops running no charge or discharge the screen shows current is not O the current can be calibrated to OA by setting the Current Cal Calibration range from 20 0A to 20 0A For example the screen shows current values for 0 6A when the system 18 EK YT 21 BMS Screen stops Current Cal by typing 0 6A and click the Settings current can be calibrated to OA by inputting 0 6A for Current Cal and click setting Calibration of Voltage Used for zero correction of voltage value the calibration value of voltage is 000mYV in default condition Max Current of Charging Defines CAN communication charger allowed maximum charging current Overcharging Protection Voltage Defines the highest allowed rising voltage value during charging process of single cell above this value it needs to perform overcharging protection and alarm to the battery Overcharging Release Voltage Canceling the protection voltage threshold of overcharging i e when the max voltages value of single cell below this value it cancels the overcharging protection and alarm Under voltage Protection Voltage Define low voltage alarm threshold of single cell for prompting the battery is not much Und
3. The current sensor gets through the cables of the circuit of pole or pole of output of the battery pack There are two ways of connections as the following picture pay attention to the direction of the arrow of the current sensor Connection Method 1 Connection Method 2 Pic 6 5 Current Sensor Installation Connection 29 EK YT 21 BMS System Wiring ERA me Reese ERES ERA IR REM ERR Connect the current sensor Connect the discharge relay control cable The red one connects to the positive pole of relay coil The black one connects to the negative pole of relay coil Pic 6 6 Current Sensor and Discharge Relay Connects to EK YT M2124 Module 6 3 4 Power Line Connection JEHREK YT M212442 RBIRE DEAR BRER SERZRBRAR Connect the power cable to the EK YT M2124 make sure that the red line connect to the positive pole of the power cable and the black one connect the negative pole Pic 6 7 Power Line Connects to EK YT M2124 Module with Control Cables m 6 3 5 Screen Connection 3 5 Inch for Example 30 EK YT 21 BMS System Wiring RRB FERAS MEARE ABER RESEPREERAR EIRCANS Molex5 11H 12L Connect the LCD Cable Connect the charging relay control cable The red one connects to the positive pole of relay coil The black one connects to the negative pole of relay coil connect the CAN communication cable Molex pins 11H 12L Pic 6 8 Screen Connects to EK YT M2124 Module with Communication Line
4. Control Mode 1 CAN bus communication 1 communication mode of display screen LCD 485 1 RS485 communication mode to realize customers requirement 2 relay control modes charge and discharge 2 switch signal control modes Battery equilibrium strategies The battery voltage real time detection of consistency The 250mA charging balance The balanced failure protection function System Management Function SOC high precision estimation The battery failure alarm 10 EK YT 21 BMS EK YT M2124 Real time processing and distribution of battery pack and system information 2 2 Model of EK YT M2124 Module 01 05 cado gs Case Number Product Generations Input voltage state 20 20 shea ae No Balance First T oc First Pe on ees With Balanced Pic 2 1 EK YT M2124 Module Mode 2 0 EK YT M2124 Module Basic Protection Parameters Table 2 1 EK YT M2124 Module basic protection parameters uncertain L_ gt i uw Note The above parameters are basic protection parameters they can be configured according to customer demand qi EK YT 21 BMS EK YT M21 24 2 4 EK YT M2124 Module Installation Size Pic 2 2 EK YT M2124 Module Installation Size Diagram Table 2 2 Size of EK YT M2124 Module Product Shape and Installation E Unit mm Product Name Weight KG Model EK YT M2124 KH20E02 Module Note W H D as the external structure size W1 H1 D1 as the installation s
5. and communication base station BMS especially suitable for a variety of small volume small capacity battery system EK YT 21 BMS Typical Applicatic Typical Application of EK YT 21 BMS EK YT 21 BMS can be widely used in a variety of less than 24 strings of battery system from electric vehicles battery to emergency power supply of communication base station meet different customers various requirements in a full range x Application in Electronic Vehicle BMS plays a very important part in the whole electric control system of the electronic vehicle BMS manages the whole system in a safe reliable and high efficient way by communicating with MCU and intelligent charger gt Technical Features 4 Strong communication function Communicate with MCU and intelligent charger via CAN Bus or RS485 to insure the efficient of the vehicle Communicate with monitor via RS485 to show real time parameters of the vehicle Perfect system control BMS set up a perfect system control strategy the alarm and the corresponding control signals would be sent out timely and accurately when the overcharge under voltage over discharge over current over heat occurs including sound and light alarm CAN communication switch signal and the relay control Powerful environmental adaptability the system through EMC testing high and low temperature aging waterproof and dustproof vibration and other simulation experiment can be adapted to the act
6. je EK YT 21 BMS Curren 4 3 Current Sensor Size Pic 4 2 Current Sensor Size 4 4 Current Sensor Interface Current Sensor Interface Pic 4 3 Current Sensor Interface 24 EK YT 21 BMS Installation Chapter 5 Installation of EK YT 21 BMS 5 1 System Wiring Diagram EK YT M2124 E JE Switching Signal Cable 1 Customer Specified Functions Switching Signal Cable 2 Customer Specified Functions RS 485 Communication Cables E E Voltage Detecta P Cables ower Cables Tem ture Detection Cables Screen Communication Cables Discharge CAN bus Charge Relay Charge CAN bus Cables Temperature Detection Pic 5 1 Installation Schematic Diagram Note The functions and configurations of the products will vary due to different models The installation instructions will be provided by us for the connection of any special cables and ports Charger battery motor controller and motor for the customer system configuration Charging and discharging relay is optional by customers coil current lt 1A also can be configured by Ligoo 5 2 Installation Environment and Requirement Avoid installing the EMS in mist metal dust or heavy dust occasions Avoid installing the EMS in places of hazardous gas liquid corrosive flammable and explosive gas Reserve appropriate space for installation Avoid touch any sharp objects when installing cables Keep far away from strong electro
7. nominal charge current of the charger Having enough power supply the maximum charging current can be set as the nominal current gt Step 3 If the maximum voltage of the single cell is higher than 3 65V BMS will automatically adjust the charging current by CAN bus so as to avoid the single cell voltage rising to the overcharging voltage too quickly gt Step 4 When the single cell voltage is higher than charging voltage delay 1 10S BMS will send controlling signals through the CAN Bus and cut off output of the charger gt Step 5 When the maximum single voltage get lower than the overcharging release voltage BMS will send controlling signals via the CAN Bus and restart the charger ra EK YT 21 BMS Current Sensor Chapter 4 Current Sensor on EK YT 21 BMS 4 1 Current Sensor Function As one of the important parts of BMS current collection and SOC estimation current sensor is mainly used for collecting current value under the condition of battery charging and discharging providing parameter reference for analyzing calculating and judging by the system The current sensor is Hall open current sensor The current detection range is 5 00A 5O0A 4 2 Current Sensor Selection KA XX 00 XX Current Sensor Code Current Number Manufacturer Code Spare Number Pic 4 1 Current Sensor Model Table 4 1 Selection Table of Current Sensor O mame Current Number Current Sensor Model 100A 300A Current Sensor Rio
8. note 1 Communication line interface of display Screen DB9 connector is connected with the COM communication interface 2 The positive and negative poles cannot be reversed if so display screen will be destroyed 3 Before installation please confirm whether the display working voltage and the operating voltage of the system is consistent 4 when the screen is 5 7 inches communication interface by default only use COM1 interface 31 EK YT 21 BMS Diagnosis of Malfunction Chapter 7 Malfunction Handling 7 1 Malfunction and Prompts EK YT 21 Energy Management System has perfect protection function which can prolong lifespan of batteries During usage user will see some prompts of malfunctions Please analyze the cause of malfunction according to the following table and solve the problems any problems can be settled or any damage of the system please contact your direct sales person or our distributor to find solution Table 7 1 Malfunction and Prompts List Description of the malfunction Possible reason o solution o Make sure if the working voltage is within the Incorrect working voltage normal range or not Without power supply Supply power for the BMS Power is damaged Contact the manufacturer of distributor for repair Over charge over discharge or The system can t get started Check the protection parameter configuration of under voltage the batteries Buzzer sends alarm and the screen Cut off the charger o
9. passed EMC test insulation resistance pressure proof high and low temperature aging waterproof dustproof and vibration experiment to ensure the system is in reliable operation Easy Installation Unique integration design of detection and management integrates the collection system and control function in one module only 4 interfaces achieve a variety of collection detection communication and control functions greatly reduces the complexity of system connection improves efficiency of the product installation commissioning and maintenance convenience UN A he Small Volume Highly integrated automotive control chip small volume and excellent performance of automotive components realize three dimensional narrowing of length width and height greatly improve the product adaptability to various models and equipment High Accuracy Adopting unique SOC estimation algorithm of battery capacity Vmin EKF algorithm theory estimation accuracy is over 97 being the first in this industry based on unique D filter algorithm with high accuracy collection system system parameters dynamic battery voltage current etc collection errors are higher than this industry Widely Application High reliability small volume powerful function and other features make the system can be widely applied to various electric vehicles such as electric motorcycle light cars mini cars and the space vehicles special vehicle
10. the users must grasp if customers are not in strictly with the manual direction to install use and maintain the product our company would not take any relevant consequence and responsibility 1 2 Qualifications and Relevant Certificates of Company TS16949 CE Certification 6 Software 6 Patents Copyrights E SRR RH Ree G eee rete eet tte 1 3 Statement To ensure the accuracy this manual has been validated and rechecked The description and direction of EK YT 21 BMS in this manual is correct but because of technical improvements the EK YT 21 BMS and the manual may change without prior notice EKNYT 21 BMS Prominent Advantages Prominent Advantages of EK YT 21BMS Power Function System integration of voltage current temperature and other battery information collection functions integrated SOC estimation battery balance data storage and other ancillary functions support CAN Bus 485 Bus communication relay control stem node control and other management features function is powerful High Reliability Adopting multiple power isolation plans in order to greatly increase reliability of the system sampling and communication high redundancy design of circuit enhance the stability of system unique balance failure protection to ensure the balance function in stable state protection circuit design for each of the power supply output interface effectively improve fault tolerance of the system
11. 11 2 3 EK YT M2124 Module Basic Protection Parameters cccccccescccccesssscceesssseeceeessseeceesseeeeeeess 11 2 4 EK YT M2124 Module Installation SiZze 0000eeeeeeeeeseseeseseesssesssseessseessseessseessresssseessseessseesseesssees 12 2 5 EK YT M2124 Module INTCMACO ssaseresse seriesso st ridoadod ita E Ecs dass to eo d ua dui o heels auninessavuehddeseneuesedeons 12 Chapter 3 Monitor on EK YT 21 BMS ccccccccecncecccecccoccc sews ncusecesccusccscctucecwactes vce etesacdscsucesucssacecesecucacesecucosstecutess 15 ot O OICeN FUNCIONE rasas Re O RU A a cn En Ri ca 15 De DONE SIAC IEG HOM tiene ctasinacccscastrcstraccaanicasedacreed a o RS di A E AR E A RD a 15 Bedi SOROS IN SADC SZC AIEE Grav stiches T E AT ES N E E N A 16 iA OCICEN Imena Eeen assa LS ag DA EU aa ai Gumiea mien 17 3 5 Main MLE MAC Ol CEE e apa 18 3 6 Display Configuration Parameter ssccciecncdnciewnnlacki eal Mew oes 18 3 7 Display Screen Parameter Configuration ccc eccccsseeesecesceceseeeseeceseeeseeceeeseseceseeeeseeeseeeeseesses 19 3 8 Battery Cell Information Display ccc ccc cccscccsccesssccessecessecesssecessecesseecessecesseceessecessecesseeeeneees 20 3 9 Charger nilormalionDISplay a E Gree OE ES 21 3 10 Instruction Of Charging Control as ccscccsucssccedesddexe occas aeadnesd ave deseliceduedd svadevecesaduiddseadavideaedundd datada aaa 21 Chapter 4 Current Sensor On EK YT 21 BMS sesessesse
12. 3 3 5 Inch Screen Size W Pic 3 4 5 7 Inch Screen Size SiG EK YT 21 BMS Scre Table 3 3 Screen Size 25 Inch Screen KXOI0001 66 Note W H D as the external structure size W1 H1 D1 as the installation size of internal structure d is width of ref installation hole 3 4 Screen Interface Voltage Detection Interface For 12V USB Interface Pic 3 5 3 5 Inch Screen Interface IEL JE IES Voltage Detection USB Interface Interface For 12V COM Interface COM2 Interface Pic 3 6 5 7 Inch Screen Interface D e EK YT 21 BMS Screen 3 5 Main Interface of Screen When screen is working with system power the main interface of screen will be as the following picture Communication Voltage Display Interrupt Signal Left Cap SOC Estimation Display Charge and Discharge Excessive Temperature Current Display Display Overcharge Display E 5 cs Ea i Undervoltage Display Pic 3 7 Screen Main Interface Note 1 The above O Al EA acta E icon only displayed in failure state and not display in nornal condition 2 Both 1 30 seconds delay for all the protection and release 3 Display screen may change please take the actual one as true 3 6 Display Configuration Parameter Total Capacity Battery releases the maximum capacity when it completes charging Generally batteries nominal capacity would be used for initial configuration
13. Dn LIGOO Jia ae EK YT 21 Battery Management System LG A 019 1109 September 2011 http www ligoo cn Anhui Ligoo New Energy Technology Co Ltd EK YT 21 BMS Foreword Foreword Thank you very much for choosing our EK YT 21 BMS BMS Battery Management System In order to help you install use and maintain the product better please read our user manual hereinafter referred to as manual carefully before installing and using it EK YT 21 BMS is a new generation of BMS specially developed for light cars mini cars space vehicles and electric motorcycles Because of the low working voltage of light cars mini cars space vehicles system less strings of battery pack can meet the requirement of the system Due to limited total volume the electric motorcycles require a kind of BMS with smaller volume more functions and more stable performance EK YT 21 BMS can also be applied to forklift trucks road sweepers and other special vehicle as emergency power supply for communication base station BMS etc With unique design structure of collection and control in collection EK YT 21 BMS reduced its volume greatly lower the requirement for installation space its high integration degree of the system makes wiring installation more concise EK YT 21 BMS also provides communication mode of CAN Bus RS485 Bus and perfect balance failure protection and balance control strategy 1 1 Suggestion This manual contains important information that
14. RNAAMESLH RS BENNMENERENM MA Mia DSRNA SMA RHA iT Dear Customers Thank you for choosing LIGOO products and service We will stick to the Customer First objection and try to serve you We are also looking forward to hearing your advice If you have any questions please contact our professional staff Thank you EPs Hotline 400 0551 306 pase FA Sth E AA Ze Name Battery eee System pe AF aS Model No ESY 521 WEI QC FBR Date ZAJ at BE IRIRA RZ Anhui Ligoo New Energy Technology Co Ltd eit LAMBA MKAKB25 om Add NO 28 Hehuan Road HeFei Anhui China FRiG Tel 0551 6105555 B Fax 0551 6105566 HiB m P C 230088 www ligoo cn BEBER BASIE BMS Expert Fully Support You 38 Please contact ANHUILIGOO NEW ENERGY TECHNOLOGY CO LTD ADD NO 28 Hehuan Road Hefei China a P C 230088 TEL 0551 6105555 LIGOO FAX 0551 6105566 lees Support Center Sih AE Hotline 400 0551 306 FAX 0551 6105566 URL Http www ligoo cn ALL Rights Reserved Anhui Ligoo New Energy Technology Co Ltd LG A 019 1109 Specifications are subject to change without notice
15. ault state is normal Temperature state display the state of temperature of the charger Output current display present charge current of the charger Output voltage display present charge voltage of the charger 3 10 Instruction of Charging Control EK YT 21 can control charging by the intelligent charger with CAN Related configuration parameters maximum charging current current during the constant current charge stage over charging protection voltage over charging release voltage The process of charging has two stages constant current charge period and constant voltage charge period The current during the constant current period can be set by setting the EERE on the configuration interface The range of the charging current varies from 1A to 0 3C C is for capacity e it is 3 times of rated charging current If the nominal current of the charger is less than the configured charging current the actual current output of the charger during the constant current charge period is the nominal current of the charger For Lithium iron phosphate battery the process of EK YT 21 controlling the charger is below gt Step 1 After the broadcast message of the charger is detected start the charger immediately When the signal of starting charger is received enter step 2 gt Step 2 The constant current charge period The current in this stage is the minimum value between the 942 EK YT 21 BMS Screen configured current and the
16. ce is as follows Battery Management System Unit V 888 02 8 888 03 5B 888 06 8 888 07 8 888 os 8 888 8 888 10 8 888 11 8 888 12 8 888 13 888 14 8 888 15 8 888 B 888 18 8 888 21p 888 22 s 888 23 8 888 24 8 888 EAEE T6 888 c T7 888 c re 888C Home Page Pic3 9 Interface of the Battery Cell Information Take 24 strings of battery for example the voltage and temperature of 24 cells in series can be all displayed Click Menu all the batteries of the pack information can be seen on the screen 20 EK YT 21 BMS Screen g 3 9 Charger Information Display Click charger the information of charger will be displayed as follows Battery Management System Charger Info OnLine State OFF Line StartUp State Starting Hardware State Normal Input Voltage State Normal Temperature State Normal Output Current 888 8 A Output Voltage 888 8 V Home Page Pic 3 10 Interface of the Charger Information 4 Online sate if charger is communicating with the BMS it shows online otherwise offline the default state is offline 4 Startup state indicate the charger has started charging or not If charging is started it shows starting otherwise stop the default state is normal Hardware state malfunction state of the charger The default state is normal Input voltage state display the state of the charger with input power supply The def
17. er voltage Release Voltage Cancelling alarm voltage threshold when under voltage i e under voltage alarm is cancelled when the lowest voltage of single voltage is higher than the parameter Over discharging Protection Voltage Definition of lowest voltage allowed falling when battery discharges discharge protection occurs when below this value Over discharging Release Voltage Defines cancelling parameters of over discharging protection i e when the lowest voltage is higher than the parameter of single cell it will cancel over discharging protection to battery Over Heat Protection Threshold Definition of battery maximum allowable working temperature over temperature protection and alarm to battery occurs when higher than the temperature Over Heat Release Threshold Definition of overheat alarm release temperature threshold i e it cancels over temperature protection and alarm when the highest temperature of the battery is lower than this value 3 7 Display Screen Parameter Configuration In order to accurately estimate all parameters of batteries BMS can be re configured for the first time of running The parameters that can be reset includes total capacity of the battery pack nominal capacity SOC current calibration over charge voltage of single cell over charge release voltage of single cell under voltage protection voltage for single cell under voltage release voltage for single cell over discharge protection voltage over di
18. ion aeplayecurrent RR In dynamic condition the current The model of current sensor is Check the current sensor is the original device of displayed is not accurate wrong the system Inspect if there is voltage of Commit the 12 The screen doesn t work Without power supply connection of the power line between CCM and screen is correct or not Current is lower than the maximum The maximum charge current of charge current of the charger during Adjust the maximum charge current again BMS is configured too low charging No protection when Over charge or Mistakes of parameter Re configure the parameter according to over discharge configuration Parameter Configuration mee EK YT 21 BMS Diagnosis of Malfunction 7 2 Procedures of Diagnosis of Malfunction Start the BMS Abnormal problems occur Inquiry technical Look for where the problem is Check the form 7 1 and see if the problem is the one in the form Inquiry technical Try to solve the problem with the help Inquiry technical of the form Come back to be Inquiry technical lt normal Y 34 EK YT 21 BMS Regular Maintenance Chapter 8 Regular Maintenance Operating environment such as temperature humidity dust interference aging and wearing Inside the device and so on are the factors that increase the incidence of breakdown of system For lowering the breakdown incidence and prolong the system regular maintenance is q
19. ize of internal structure D is width of installation hole 2 5 EK YT M2124 Module Interface E 2 5 1 EK YT M2124 Module Interface Distribution Drs EK YT 21 BMS EK YT M2124 Programing Interface Voltage Detection Interface Teens Detection System Power and Communication Interface nterface C t Se Interf 28PIN CBPIN mo he 20PIN Erez 16 GS BS BG Sis JR TOS JOE TES Tae E TH M DSG CF PTA VEZ TY Sensor et 16 Jas 167 Jos Bit 161 1615 1617 61S ees TE J DSG C JRI VISIT GND Pic 2 3 EK YT M2124 Module Interface Distribution Picture E 2 5 2 EK YT M2124 Module Interface Function Table 2 3 EK YT M2124 Module Interface Function Interface Interface Name Interface Function Voltage Detection Interface Fulfill the voltage detection of a single battery Temperature Detection Interface Real time monitor of battery temperature Supply the working voltage of EK YT System Power and Current Sensor Interface Connect to current sensor to monitor real time working current Number le EK YT 21 BMS EK YT M2124 Reserve 2 switching signal control circuit to meet customer specified Control charge relay Current Current Current Sensor Sensor Sensor Signal Input LCD Power LCD Power LCD RS485 Output RE External Switching Signal Control 1 External Switching External Switching External Switching Charge Relay Control Charge Relay Sig
20. magnetic interference environment All the accessories that is related to installation of this EMS should get confirmation from the manufacture oba EK YT 21 BMS System Wiring Chapter 6 System Wiring for EK YT 21 BMS 6 1 Type of Cables Table 6 1 Table Types The size of cold pressed terminal depends on specific requirement of customers 0 35 high temperature cable 2 Temperature detection cables One side is Molex68145 8 terminal The other side is NTC temperature sensor M6 2 0 5 power line 3 powerline One side is Molex68145 12 aviation plug The other side is nothing or depends on customer s requirement 4 0 5 power line One side is Molex68145 12 aviation plug The other side is nothing or depends on customer s requirement 2 0 5 power line One side is Molex68145 12 aviation plug The other side is nothing or depends on customer s requirement 2 0 3 power line The cable is used when the CAN cable for charge One side is 2 pin 16 aviation plug charge control method is The other side is Molex68145 20 aviation plug CAN 2 0 3 power line The cable is used when the One side is 2 pin 16 aviation plug discharge control method is The other side is Molex68145 20 aviation plug CAN 2 0 5 power line One side is Molex68145 20 aviation plug The cable is used when the Cable of relay for charge The other side is nothing or depends on customer s charge control method is 0 5 High temperature cable Voltage monitoring cables O
21. meter on the screen can t be changed at ease or it might damage the battery pack AAN Attention Before running make sure this system is used within the allowed conditions and applications or it might cause system failure Before running make sure the control strategy is correct or not or it might cause damage to the battery pack Maintenance And Cut off the power supply before removing the shell to avoid the risks of electric shock check Circuit board has a lot of chips Don t touch it to prevent electrostatic damage to the circuit board Specify qualified electrical engineers for maintenance inspection or replacement of parts CO ees o Prohibit self transformation of this system to avoid any serious accident EK YT 21 BMS Catalogue Catalogue Chapter 1 Introduction of EK YT 21 Battery Management System scssccsscssccssccsccssccsccssccsccsscesscescssccsees 8 troys eN UIC LINC 22 co nross ana ars SEA nisso RA ER E GU a a ui 8 12 System Configuration rasis a cused SR CEO Rand dd 8 TES FUNCION ON oY SLC mera a a e a a O eases 9 LA MECC AN Paramete Seran a a E ct des costeedeuecncnsaceaouc caress seceauen A TA A 9 Chapter 2 EK YT M2124 Module in EK YT 21 BMG ccssccsscssccsscssccsccnsccsccnsccsccnsccsscnsccsscesccsccescosscescossoess 10 2 Function OF EK YT M21 2A icc scsi ia a nba Sena Sopa E diga ede aa ip dd 10 2 2 Model of EK YT M2124 Module espetado fat duda a IO Sa E o a easiae
22. meters Table 1 1 Technical Parameters of BMS pS iecitication Remas O Current Accuracy SoCAccuracyintheory am Accuracy of Temperature Detection Rated Current of Switching Signat s O Working Temperature Range memo Storage Temperature Range oeme Balance Current zstmarcrautatmost Working Moisture Range amam S O antrareewomagnete imerteronco Range mei Note Voltage of single cell only take Lithium iron phosphate battery for example other types of batteries can be customized based on customer requirements EK YT 21 BMS EK YT M2124 1 5 Product Code B00010 E 1 Lo atl a Name Product Code LIGOO EK YT 21 BMS rer code Product No B00010Y4016E110320001 ON CUE USM TATOO ILI Type of balance Total number of series os2601 MMI ANI DUR TOM M Tos oi svsteni tode Serial Number DONE j Bo Se a a a ae eee Bee BT B00010110926001 Custom code Pic 1 3 Product System Code Chapter 2 EK YT M2124 Module in EK YT 21 BMS 2 1 Function of EK YT M2124 EK YT M2124 is the core equipment in EK Y T 21 for collect process and control of system data The main functions are as follow Information Collecting Function Max 24 of single cell voltage real time high precision data collection and wave filtering processing Max 4 of real time acquisition and processing to temperature sensor signal Collection and processing to charging and discharging current Communication and
23. nal Control 1 Signal Control 2 Signal Control 2 Control 14 EK YT 21 BMS Screen Chapter 3 Screen on EK YT 21 BMS 3 1 Screen Function Screen is the User Interface of system running situation All types are all designs by industry standard and suitable to various environments The display interface of screen can display all kinds of operation parameters of the system and fault condition Description There are three lights on the screen that indicate the status of the operation of the system including power light PWR Running RUN communication COM When the screen is powered on the PWR light will be always bright if the RUN light is always bright it means the screen is running fine if the RUN light is dark it means the screen has something wrong if the EMS is connected COM light is flash yellow PWR RUN COM Pic 3 1 Indicator Light in Operation Status The following table shows indicator lights status in different state Table 3 1 Pilot Lamp Condition on Screen Dome O o o RE O O o LED Off e LED On X Flicker 3 2 Screen Selection KX 01 00 01 Screen Code Screen Number Manufacturer Code Spare Code Pic 3 2 Screen Model 15 EK YT 21 BMS Screen Table 3 2 Screen Selection Table Product Name Screen Model 3 5 Inch Screen KX010001 5 7 Inch Screen KX010002 3 3 Screen Shape Size D1 pila H1 _ VWI E r Pic 3
24. ne side is Molex68145 28 terminal The other side is 1 5 8 cold pressed terminal Current sensor cables The cable is used when the discharge control method is relay Cable of relay for discharge requirement relay 2 0 3 power line Monitor communicate cables One side is 5 pin 16 aviation plug The other side is Molex68145 20 aviation plug 5 0 5 power line One side is KST 26 pin aviation plug The other side is Molex68145 20 aviation plug 2 0 5 power line One side is Molex68145 20 aviation plug The other side is nothing or depends on customer s requirement Switching signal cables 1 The length of cables are the result of consultation between the customer and our company 2 The way of connections of the cables can be seen in the part of installation instruction 3 any special cables are required please contact the sales people soon 6 2 Cables a The form below includes the wires that are used of connection in the BMS Db EK YT 21 BMS System Wiring Table 6 2 Cables Illustrate Voltage Detection Battery Pack Cables 2 cables for the following 16 Temperature strings Detection Cables 4 cables for 16 to 24 strings Connect to Power Cables System Power Current Sensor Current Sensor Cables Discharge Relay Discharge Relay Cables Discharge Motor Controller CAN bus Charge Relay Charge Relay Cables Screen Communication Screen Cables RS485 Communication Cables C
25. ore installation see Part Eight of this manual Service Direction 1 Attention Handling with care during moving installation to avoid damage of the product or injury to the person Installation Keep away from inflammable items and heats Never let debris come into the BMS otherwise it will lead to system failure The shell of Insulation Test Module must have good connection with the body of the vehicles or the module will be ineffective FB ec o o Wiring should be operated by qualified electrical engineers Otherwise there will be risk of electric shock or damaging the system Before wiring make sure the power supply is cut off or it has risks of electric shock or fire JAN Attention Strictly follow the sequence of the address of the Data Collection Module during installation or the data that DCM has collected won t match with the data that the screen displays Make sure if the serial number of DCM is the same with the battery serial number otherwise it leads to incomplete data collection Make sure the sequence of wiring of voltage monitoring cables is right or not or it will damage the system Check the wiring of relay is correct or not or it will cause system failure or battery pack damage Check the wiring of positive pole and negative pole of the power supply is correct or not or it will cause system failure A Hazards After all the modules and wirings are correctly connected power on the system Operation The para
26. power off before replacement Components should keep a good working All kinds of wires should be replaced on time if any damage due to any environment to improve the life of short circuit caused by vibration aging the plug joint fall off power off the components before replacement Check if all the connectors are firmly connected Reinforce them if any are loose on time Check if all the wires are in good condition Replace them if any is worn The communication of CCM and DCM Check the LED is bright or not If no bright there is something abnormal with the communication Please check Appendix B on Page55 to solve the problem If the problem can t be settled please contact the distributor or manufacturer Regular The inspection of accuracy of voltage and temperature User should plug off the voltage monitoring cables when Maintenance checking voltage User should use a professional measurement device to check the voltage are in the normal range or not use professional device to check the temperature is the same with the screen If anything abnormal pls check Appendix B on page 61 64 If the problem can t settled please contact the distributor or manufacturer Regularly check if the screen is working fine or not If anything abnormal please read Appendix B on page 61 64 if problem can t be settled please contact the distributor or manufacturer Regularly check the module is fixed firmly or not If loose please reinforce it on time
27. r stop supplying power to can display data Over heat the batteries under safe condition Communication is cut off Inspect communication port Disconnect the circuit under safe condition and Buzzer sends alarm and the screen Temperature different is too large restart when the temperature is recovered SOC is too low charge the batteries Communication cable is not has no display Check the power port of the screen is loose or error appropriately connected fall off Battery monitoring cables are not Check whether the voltage monitoring cables The screen displays OV voltage connected or not connected are appropriately connected firmly The current sensor is not a The screen displays communication 4 Display the maximum voltage 40 C Some cells voltage are not correctly displayed Display during discharge display during charge No display of current appropriately connected The voltage monitoring of those cells are wired in the wrong way The temperature sensor is connected in the wrong way Current sensor is not appropriately connected In static condition the screen Don t configure current digit Ri ee Check and connect the current sensor again Check and connect the voltage monitoring cables again Connect the temperature sensor in the opposite way as before Check the current sensor is correctly connected or not Read Parameter Configuration EK YT 21 BMS Diagnosis of Malfunct
28. scharge release voltage for single cell over heat protection temperature overheat release temperature gt Step 1 Click the button Apply and then input the password 8888 to enter BMS configuration page 19 EK YT 21 BMS Screen Battery Management System BMS ns Read Apply e Home 1 Pic 3 8 BMS Configuration gt Step2 For the first time of entrance BMS configuration page the actual parameters of BMS can be obtained until press Read so user should press Read to see the parameters that have been set gt Step 3 Click relevant pages to do initialization settings in terms of the actual parameter of the batteries gt Step 4 Input all the parameters into BMS Click apply and wait for 5 seconds until the COM light flashes then the setting is finished gt Step5 Verify the setting is successful Click Read if the parameters are the same as the ones you have input before that means the setting is OK Otherwise please go back to step 2 step 5 gt Step 6 Press home and come back to home page Note 1 All the parameters can be customized modified and added 2 It is not allwed to modify the parameters at ease if all the settings have been done and the system has got running Any wrong settings of the parameters are possible to failure of protection to the batteries 3 8 Battery Cell Information Display Via menu button enter other pages Click EES the single cell information interfa
29. sessecsssecsececsecsssessececsecsesecsecscsecseceesecsssecseceesecseseeseoe 23 AT CULE NT SEMSOM FUNCION asia dat ai Sa Ud 23 42 Curent Sensor Selec ON aaa Sa a aaa eK Roa oe aes 23 Ai CUIMEHE SENSO SIZE sra a 24 AA Current Sensor Menace ereunna a E E O cbs OAA 24 Chapters Installation of EK YT 21 BMS rni N aaa 25 De bh OY Sth VVINIIG DIAG KAN sera Sad rine eaves cee ein Seen ae a oS 25 5 2 Installation Environment and REQuireMent ccccccsscccessecceeseeceesseceeesseecsseeeeesseeeeesseeeseeeeeens 25 Chapter 6 System wiring for EK YT 21 BMS siscecconcdeccsoectenceduedenddoucdindsouctoncddvetenedouc ding souctoncdduelanedoncbinesouetencsovess 26 Gl TYCO CADIES cuide ias deme esi aC E E essa ae eee 26 6100 220 n Nee ene EP RSE E a OE PS nee ao 26 6 3 Cable Connec MOG eiiascccesccsbucstuxedisicdesticatsansexticeadavatacioesss Gta iba a a 28 Chapter Z Malfunction Handlihp cisiiscecisssivesiaadedesiesisiusdeuceiusdindiissdisiidvclouideusieusliucdinsdiecticaliustasctiusdasceinadeuciiias 32 7 1 Malfunctionand PrOMPIS casas tes pressa e A E ERRER DS OKERE ees 32 7 2 Procedures of Diagnosis of Malfunction ssscesrernniiciriitiriaienina riii ia A A Ea 34 Chapter 3 Regular Maintenance sinos esa end vrei eae esa ran ia aa aa 35 Chapter S Service DITection a e ad la datada ad ad 36 EK YT 21 BMS Catalogue STEOC EINO aO sy ccss det erates a a Me ceetes Da a 36 Append A S
30. st mode of charge and discharge Discharge Communication Relay LCD 485 Equipment Screen Charge Relay Charger RS485 ome dd Data Storage Module Heating Heating Control Signal Device a Refrigeration Control Signal SWd TE LA J3 Refrigeration Battery Fan Pic2 Communication Base Station System EK YT 21 BMS Security Guide Security Guide m Security warning explanation Hazards Hazards that may cause fire or serious personal injury or death due to the failure of following required operations A Attention danger that may cause a slight or moderate injury or damage to the system due to the failure of following required operations Please read this part carefully during installation adjustment or repairing The user must follow the security instructions of this part In case of any damage or loss caused by any irregularities the manufacturer party won t take any responsibility for the damage or loss FB nc OoOo This series of BMS must be specified voltage of power supply or the system will get damaged This series of BMS is applied for monitoring and management of battery pack It can t be used for other application or it will cause system failure or fire Inspection of the If it is found the BMS is damaged or any parts are missing don t install it or accident may occur goods arrival When the goods you receive doesn t match the Pack list please contact sales person soon bef
31. ual use of electric transport processes in a variety of harsh environment ensure the reliable operation of system CANBus LCD 485 SE Screen JA JO UO gt IQON RS485 Gem dd Data Storage Module lt D O D A O 5 o D Data Collection Gm Battery ER 7N I lt NO a gg E mM CANBus gt yaHueys juabi jau Pic 1 Electric Transport System uncertain EK YT 21 BMS Typical Applica The Application of Communication Base Station Although communication base station environment is relatively stable its working state need asks for an extremely stable system if keeping working Only more stable more reliable management system can effectively ensure power supply to the communication base station gt Technical Features Powerful Protection Function Overcharge protection under voltage protection over discharge protection over heat protection over current protection etc and reasonable logical control provide powerful protection for equipment continuous and stable operation 4 The comprehensive early warning LCD screen sound alarm LCD screen icon warning buzzer alarm management system and other sound and light warning mode improve the system of early warning ability facilitate a timely processing to equipment Storage and analysis of data Optional DSM to achieve real time record and save every key data then analyze and reconstruct all the data to establish a be
32. uite necessary AD Attention E Only professional person is allowed to dismantle or replace any internal parts Ensure the system powered off before inspection or maintenance Avoid metal or other objects left in the system otherwise it will cause short circuit or damage to the BMS To ensure a good performance and prolong lifespan of the BMS user should offer a good operating environment Avoid long time strong and Operating environment l l direct sunlight or other radiation condition prevent water or other liquid dust or dirt from entering the BMS Regular Check the input and output voltage and current by use voltmeter and Maintenance ammeter to see whether they are in the normal range User can take CCM and DCM l l Parameter Instruction as reference Or user can make a judgment via touch smelling visual and other intuitive judgment E Keep the surface clean no bump or wearing So that it can prevent creen interference with line of sight resulting in misjudgment The wires and joint solder of all kinds of plugs such as aviation plug PIN The lifespan of various types of connector serial port etc prone to fall off which result in short circuit They components varies It is affected by should be replaced if damaged Power off before replacement Replacement the operating environment and DC DC prone to short circuit or high voltage prone to be damaged Replace of application conditions So we them on time and
33. ustomer Switching Signal Specified Cables Functions 97 EK YT 21 BMS System Wiring 6 3 Cable Connect Mode 6 3 1 Voltage detection cables connection 24 string for example B1 connects to the positive pole of the first cell red line o B1 B23 connects to negative pole of each cell in sequence black line B24 connects to the negative pole of the last cell green line D Positive Pole B24 B1 of The Battery Pack RR ee dci PA Doo o if X N d PF B3 sc 4 E ER DARAH GJE i x A LE C H ES A A gt Bl a o F a aa B24 gt Negative Pole of The Battery Pack pic 6 1 Voltage Detection Cables Connects to Pole of Battery pic 6 2 Voltage Detection Cables Connects to Pole of Battery IEEK YT M212448iR FOAM MARA HSIEK YT M212442iR E Fixed the EK YT M2124 Connect the voltage monitoring cable to the EK YT M2124 Pic 6 3 Voltage Detection Cables and EK YT M2124 Module Connection A Note The voltage detection cables can not be connected in wrong sequence or it will lead to wrong voltage collection burn the banlance circuit and damage the battery 6 3 2 Temperature Detection Cables Connection 28 EK YT 21 BMS System Wiring Sim RE fe ESS SVEK YT M21244234 EF Connect the temperature sensor cable to the EK YT M2124 Pic 6 4 Temperature Detection Cables connect to EK YT M2124 Module 6 3 3 Current Sensor Connects to Discharge Relay
34. ystem LISE soa eatcces cesta eia aac GT a Naa Gp oO SEE aaa aca 37 38 Appendix B_ Product Certificate EK YT 21 BMS Introduction Chapter 1 Introduction of EK YT 21 Battery Management System 1 1 System Structure EK YT 21 BMS is composed of EK YT M2124 module which has functions of system management and information monitoring monitor optional current sensor and cables VCLCW LA MA yed lsgeg uoj wniyyT 4 gt IH Pic 1 1 System Structure 1 2 System Configuration EK YT M2124 Current Sensor Screen Pic 1 2 System Configuration EK YT 21 BMS Introduction 1 3 Function of System The EK YT 21 system adopts the design of detection and management in collection with high precision high accuracy function of information collection can collect voltage of single cell battery voltage battery box temperature and other data balance single cell analyze and processing the battery pack data send alarm and control according to the battery status The EK YT 21 system through the current sensor to collect current data determine the charging and discharging state complete working current measurement charge and discharge control of the battery pack comprehensive utilization of the battery data to do SOC estimation and discrete evaluation The EK YT 21 system can also real time display the battery pack voltage current temperature SOC etc and convenient setting by screen 1 4 Technical Para
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