High Voltage BMS Board
BMU manages a battery pack of 32 strings, lithium iron phosphate or ternary battery, rated discharge 40A-100A (maximum continuous), charging 40A-100A (maximum continuous), with balanced management. With LED power display, with WIFI, RS485, CAN communication (default standard), BCU supports up to 5 battery packs in series, the battery cluster system does not require the third layer of hardware to manage up to 4 BCUs in parallel.
Features
- 1. PC software with cloud monitoring, with WIFI communication interface, read single battery voltage, current, temperature, SOH, SOC, whole group capacity, number of charge and discharge cycles, charge cut-off voltage, discharge cut-off voltage, maximum charge current limit value , maximum discharge current limit value, battery status, accumulated charging energy and discharging energy and other information.
- 2. The protection parameters can be flexibly modified, stored in the memory chip, and the data can be stored for 50 years without loss.
- 3. Integral algorithm fuel gauge display function, with temperature compensation and self-learning algorithm, etc.
- 4. Charge overvoltage, discharge undervoltage, charge overcurrent, discharge overcurrent, charge overtemperature, discharge overtemperature, charge low temperature, discharge low temperature, insulation fault, voltage sensor fault, current sensor fault, temperature Sensor failure, version matching protection, with hardware full redundancy secondary protection.
- 5. Voltage difference protection, the voltage difference between any two cells exceeds 0.5V (fixed value), charge and discharge protection, and alarm.
- 6. The inter-string equalization and inter-module equalization circuits are controlled by temperature to prevent the equalization circuit from heating up seriously.
Adaptation range
High voltage energy storage batteries, power batteries such as electric forklifts, electric trailers and AGV car robots.
Maximum applicable range
| parameter | rating | unit |
|---|---|---|
| operating temperature | -40~85 | ℃ |
| working environment humidity | less than 85%RH | %RH |
| storage ambient temperature | -40~125 | ℃ |
| storage evironment humidity | less than 85%RH | %RH |
| charging voltage rated voltage | set according to BMS | V |
Electrical Properties
| project | details | standard |
|---|---|---|
| voltage acquisition accuracy | 10mv | |
| current acquisition accuracy | 1% | |
| SOC accuracy | typical 5% maximum 8% | |
| overcharge protection | overcharge detection voltage | 3.6~4.25V can be set |
| overcharge detection delay line | 0.2S~6S can be set | |
| overcharge recovery voltage | 3.6~4.25V can be set | |
| over discharge protection | overdischarge detection voltage | 2.0~2.9V can be set |
| overdischarge delay time | 0.2S~6S can be set | |
| overdischarge recovery voltage | 2.1V~3.0V can be set | |
| charge overcurrent protection | ||
| charge overcurrent protectio current | 40~100A can be set | |
| charge overcurrent detection delay time | 0.2~6S can be set | |
| charge overcurrent recovery delay time | 50S~300S can be set | |
| discharge overcurrent protection | ||
| discharge overcurrent protectio current | 40~100A can be set | |
| discharge overcurrent detection delay time | 0.2~6S can be set | |
| discharge overcurrent recovery delay time | 100S~600S can be set | |
| short circuit protection | ||
| circuit breaker and FUSE for short circuit protection | ||
| shot-circuit protectio release conditions | disconnect the load | |
| internal resistance | main circuit on-state resistance | 2 milliohms (measured at 50A) |
| current consumption | the internal consumption of the circuit during operation | 12.5mA Type |
| sleep current consumption | internal consumption of the circuit during sleep | 20uA Type |
| charge and discharge high temperature protection | 45℃ ~ 62℃ can be set | |
| charge and discharge high temperature protection recovery | 42℃ ~ 62℃ can be set | |
| charge and discharge low temperature protection | -20℃ ~ 0℃ can be set | |
| charge and discharge low temperature protection recovery | -17℃ ~ 3℃ can be set | |
| balaced turn-on voltage | 3.4 ~ 3.7V can be set | |
| balaced current | 120mA | |
| rated discharge current | according to the customer's choice, the max-imum 100A cotinuous charge and discharge | 150A Pulse 200A (40S) |
| disconnection protection detection time | 2 seconds | |
| disconnection protection recovery conditions | repair wiring, otherwise cannot be charged or discharged | |