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Help Center19.2V 70Ah LiFePO4 Lithium Battery Module For Powertrain, Electric Tourist Vehicle
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Certification:UL, CE, UN, RoHs
19.2V 70Ah LiFePO4 Lithium Battery Module For Powertrain, Electric Tourist Vehicle
Specification
|
Item |
Comments |
|
Battery module |
70Ahr or 1344Whr (300PCS O’CELL IFR18650EC-1.4Ah cells in a 6S50P configuration.) |
|
Approx. Dimension |
260 mm x 158mm x 246 mm (L*W*H) |
|
Approx. Weight |
14.9kg |
|
Nominal voltage |
19.2V |
|
Maximum voltage |
21.9V |
|
Minimum voltage |
15.0V |
|
Nominal load current |
100A max. continuous current @ 23° C |
|
Peak load current |
200A max for 30 sec @ 23° C |
|
Charge protection |
When the Battery modules are charged to full, they will communicate with BMU, and the BMU has the capability to turn off the charger or open the main contactor. The battery module itself does not have any switch to disconnect the charger. |
|
Balancing |
The intra-module balancing circuit is used to compensate slight capacity imbalance among the four cell blocks within a battery module. The inter-module balancing circuit is used to compensate slight capacity imbalance between different battery modules in series connection. |
|
State of Charge (SOC) Measurement |
Individual cell block voltage and charge/discharge current will be used to monitor the state of charge (SOC) of the battery module. The estimated capacity used for the calculations will be adjusted to meet the capacity of the lowest capacity cell block when the battery system is fully cycled. The state of charge will be adjusted for normal self discharge of the battery system when the unit is not on charge. |
|
RS-485 Communication Uplink |
RS-485 Communications will be used to communicate with the Battery Management Unit (BMU) or connection to other battery Modules. |
|
RS-485 Communication Downlink |
RS-485 Communication connection from Downstream battery module. |
|
RS-485 insulation voltage rating |
1414V , 5000V rms for 1 minute |
|
Status LED |
A Dual LED on module to indicate working status. One is green and the other one is red. Blinking of the green LED indicates that the module is working properly. Blinking of the red LED indicates that the module has failure and needs service. |
IP56 design suit for severe condition;
State-of-charge (SOC) will be monitored via individual cell voltage measurements and the charge/discharge current. The SOC accuracy shall meet the accuracy listed below:
Accuracy of SOC to be
0 ~ 20% SOC: 5% accuracy (voltage-temperature compensated)
20% - 80% SOC: 10% accuracy (coulomb counting)
80% - 100% SOC: 5% accuracy
Circuit Self Discharge Rates
The circuit within the battery module will have a self discharge rate :
|
Condition |
Leakage current |
|
Shipping mode (Not connected with other battery modules and BMU) |
Less than 1.0mA |
|
Working mode (Connected with other battery modules and BMU), charging or driving |
Less than 6.0mA |
|
Sleep mode (Cell voltages are below discharge cut-off voltage, or the vehicle is not ignited.) |
Less than 700 µA |
Leakage current of PCBA within the battery module
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