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The PCU integrated with the high-voltage box can monitor and manage battery clusters internally and
complete information exchange externally.

The main functions of the PCU are as follows:

Battery information management: PCU can monitor cell voltage, cell temperature, cluster voltage,
cluster charging current, and cluster discharging current in real-time.

SOC estimation: Estimated the battery cluster SOC.

DI/ DO communication: PCU provides multiple DI and DO interfaces.

CAN and RS485 communication: PCU provides 3 CAN communication interfaces and 2 RS485
communication interfaces.

Self-fault diagnosis: PCU has a self-test function.

Charge and discharge management: PCU can coordinate the charge and discharge between battery
clusters and improve the circulating current in clusters.

Summary of Contents for ESS Series

Page 1: ...KARAVELOW 9B Thank you for selecting and buying V TAC Product V TAC will serve you the best Please read these instructions carefully keep this user manual handy for future reference If you have any an...

Page 2: ...d with a high level of risk which if not avoided will result in death or serious injury Warning Indicates a hazard with a medium level of risk which if not avoided could result in death or serious inj...

Page 3: ...ystem over charge system over discharge cell over voltage cell under voltage charging over current discharging over current and insulation fault It also has RS485 CAN and dry contact communication all...

Page 4: ...oduction 3 1 Battery Cabinet The appearance of the battery cabinet is shown as follows Figure 2 Battery cabinet appearance The battery cabinet dimensions are shown as follows Figure 3 Battery cabinet...

Page 5: ...I 6 Equalization Negative equalization 300 mA 7 Operation voltage range VEH192100C 168 V 204 V VEH204100C 179 2 V 217 6 V 8 Self discharge 3 per month 9 Max continuous charge current 100 A 10 Max cont...

Page 6: ...y protection 21 Dimensions W H D 640 mm 1280 mm 350 mm 22 Weight VEH192100C Approx 230kg VEH204100C Approx 238kg 3 2 1 Lithium ion Cell The lithium iron phosphate cell selected in the scheme is a spec...

Page 7: ...ltage 3 65 V 9 Discharging cut off voltage 2 50 V 10 Operating charging temperature 0 55 11 Operating discharging temperature 20 45 12 Storage temperature 20 45 less than 1 month 0 35 less than 12 mon...

Page 8: ...ppearance is shown as follows Figure 5 Battery module appearance The battery module s three views are shown as follows Figure 6 Battery module three views unit mm 3 2 2 2 Operation Panel The battery m...

Page 9: ...2 Running indicator Indicate battery module running status 3 Reset switch Reset BMU 4 Output connectors Battery module output connectors 5 Ground Ground 3 2 2 3 PIN Definition The PIN definition of a...

Page 10: ...00 Ah 6 Rated capacity 4 80 kWh 5 12 kWh 7 Charging cut off voltage 54 0 V 57 6 V 8 Discharging cut off voltage 37 5 V 40 0 V 9 Max continuous charge current 100 A 100 A 10 Max continuous discharge cu...

Page 11: ...with the inverter If there are multiple battery cabinets in parallel the appearance of the master and slave high voltage boxes is the same but the functions are different There is a PCU inside the mas...

Page 12: ...ation panel is shown as follows Table 6 Operation panel definition No Items Remark 1 DC input switch BMS 24V power supply control 2 External communication port Master high voltage box SCADA communicat...

Page 13: ...t the next high voltage box Optional 4 CAN1L 5 CAN2H Inverter communication 6 CAN2L 7 DI Low voltage wake up 8 DI 9 AC L AC input 10 AC N BMU communication port The PIN definition of the BMU communica...

Page 14: ...oltage sampling 0 V 600 V 0 5 FS 0 1 RD 8 Total current sampling 1 A 200 A 9 Temperature sampling NTC 20 125 2 10 Insulation 0 5M 11 Short circuit protect Yes fuse 12 Isolation rate 500 VDC the 60s is...

Page 15: ...e of the BMS is shown as follows Figure 13 Communication topology 3 3 1 BMU The BMU integrated with the battery module is the initiating unit of the BMS It monitors battery voltage and temperature and...

Page 16: ...nd trigger protection when alarm and emergency battery module possible failures appear to ensure the safety reliable and stable operation of battery modules BCU s main technical specifications are sho...

Page 17: ...ter charging current and cluster discharging current in real time SOC estimation Estimated the battery cluster SOC DI DO communication PCU provides multiple DI and DO interfaces CAN and RS485 communic...

Page 18: ...engineers During installation two people must work together one operating and the other inspecting The original cable connection and operation process shall not change without the authorization of the...

Page 19: ...ultimeter 4 2 2 Packing List Open the package and take out the product please check the accessories rst The packing list is shown below Figure 14 Accessories of RESS A High voltage box B Base C Batter...

Page 20: ...ion site The installation site should comply with the following conditions The installation site should be able to place one battery cabinet and there should be a wall to mount the inverter A 500 mm v...

Page 21: ...ight the coil can be removed before assembly Figure 16 Fixing the battery box 2 4 Two sets of battery cabinets are xed install 2 pcs guide rails of battery box 2 then open the battery cabinet doors an...

Page 22: ...alled against the wall it can be fixed on the wall 7 Use a hammer drill to drill holes for installing the expansion bolts and then install the expansion sleeves in the holes Figure 19 Expansion bolt c...

Page 23: ...e expansion bolt using a hammer until the expansion sleeve is fully inserted into the hole C Partially tighten the expansion bolt D Remove the bolt spring washer and flat washer 8 Place the cabinet in...

Page 24: ...and installation The address of the battery module can be automatically assigned after the battery module is powered on 2 Fixing the battery modules to the cabinet with the cross recessed pan head co...

Page 25: ...king connector are as follows A Adjust the direction of the self locking connector to align with the battery module terminal B Rotate the self locking connector slightly and it will be sucked in autom...

Page 26: ...ve pole and black corresponds to the negative pole The internal wiring of the battery cabinet is the same This chapter takes a battery cabinet as an example to introduce Please take care of the remove...

Page 27: ...mended tightening torque is 7 N m 4 6 Connecting Signal Cable Context Please pay attention to the direction when plugging the signal cable connector do not operate violently Signal cables and power ca...

Page 28: ...he inverter to the user side please refer to the inverter user manual 1 Please confirm the usage scenarios of the inverter according to the actual situation For details please refer to the inverter us...

Page 29: ...cted Check whether the bolt torque on the terminal of the high voltage box is 7 N m Check whether the signal cable and the power cable are separated 3 Check whether the battery module and high voltage...

Page 30: ...system has completed the system parameter settings at the factory and the system will run automatically after power is on The inverter needs to be set according to actual needs For detailed operation...

Page 31: ...and the circuit breaker from the inverter to the grid should be kept open 6 1 Battery Storage The recommended storage temperature is 15 35 Battery performance degradation after long term storage plea...

Page 32: ...maged leaking or deformed take a photo and replace the problem battery module Please contact Vestwoods in time for other abnormal situations Operation environment The operation environment is between...

Page 33: ...and Abbreviations AC Alternating Current BMU Battery Management unit BMS Battery Management System BCU Battery Control Unit DC Direct Current PCU Protocol Converter Unit SOC State of Charge SOH State...

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