BMS for ESS

Working environment

Temperature

Operating temperature：-20～+65°C

Storage temperature：-40～+125°C

Working power

Voltage/Power consumption

Rated voltage：9～32Vdc（reverse connection protection）

Rated power consumption: 120mW (without load)

Communication

CAN

Support 1-channel non-isolated CAN

Communication rate: 250kbs

Collection

Cell voltage collection

Collection range: 0～5V

Collection resolution: 1mV

Collection accuracy:

+10≤t≤+45 °C, the accuracy ≤5mV;

-40~≤t≤125°C, the accuracy ≤8mV

Collection rate：100ms

Electrical isolation:

4149Vdc/2934Vac (8mm)

Cell temperature collection

Collection range:  -40～+125°C

Collection resolution：

0.1°C

Collection accuracy:

-20≤t≤+65°C, the accuracy≤1°C;

-40≤t≤+125°C, the accuracy≤2°C

Collection rate：200ms

Cell equalization

Cell equalization control

Support 24-channel cell passive equalization

Equalization resistance: 33Ω

Equalization temperature rise：≤45°C

Working environment

Temperature

Operating temperature：-20～+65°C

Storage temperature：-40～+125°C

Communication

CAN/RS485

Support 1 isolated CAN and 1 non-isolated CAN

2 isolated RS485

Collection

Total voltage

collection

Collection range: 0～1500V

Collection resolution: 0.1V

Collection accuracy:

Total voltage<1000V (≤±1%FS)

Total voltage ≥1000V (≤±0.5%FS)

Collection rate:

100ms

Electrical isolation:

4149Vdc/2934Vac (8mm)

Total current

collection

Collection range: ±1200A

Collection resolution: 0.1A

Module circuit collection accuracy: ±1200A, accuracy ±1%FS

Collection rate:

200ms

Insulation collection

Collection range: 0～10MΩ

Collection accuracy: accuracy≤3% (500V～1500V, ≥600KΩ)

Collection rate: 60s

(adjust according to the Y capacitance value of the PCS device)

Temperature collection

Collection range: -40～+125°C

Collection resolution: 1°C

Collection accuracy:

-20～+65°C, accuracy≤1°C;

-40～+125°C, accuracy≤2°C

Collection rate:

200ms

Monitoring capability

1 RCU module can max. manage 32 BMU modules

Working environment

Temperature

Operating temperature：

-20～+65°C

Storage temperature：

-40～+125°C

Communication

LAN communication

Communication rate: 10M/100M

Electrical isolation: 3000Vdc

CAN communication

Communication rate: 250kbs

Electrical isolation: 2500Vdc

RS485 communication

Communication rate: 9600kbs

Electrical isolation: 2500Vdc

RS232 communication

Communication rate: 9600kbs

Electrical isolation: 2500Vdc

Storage

Data record

On-board eMMC

storage space: 8G

External expansion TF 

card storage space: 0～128G

Insulation

Communication

LAN：3000Vdc

CAN/RS485/RS232：2500Vdc

Monitoring capability

1 SCU module can max. manage 30 RCU modules