The 7-11S universal intelligent BMS protection board is designed specifically for 25-36V lithium batteries and is suitable for ternary lithium, lithium manganese oxide, and lithium iron phosphate battery cells. Adopting a universal low edge (negative control) driving scheme, providing multiple safety protections, effectively improving the safety of lithium battery products. Supports RS485 and UART communication to meet users' regular communication application needs. Optional Bluetooth module, allowing users to view and set various battery information and parameters through a mobile mini program.
Product image
main features
- Support 7-11 string battery system management;
- Support temperature monitoring of 2 battery cells;
- Supports serial communication and RS485 communication, and supports communication wake-up;
- Support the upper computer to read battery information, configure BMS parameters, and upgrade IAP firmware;
- Support abnormal protection such as overvoltage, undervoltage, overcurrent, short circuit, high and low temperature, cell failure, wire breakage, hardware failure, etc;
- Support precise measurement of SOC and assessment of SOH health status during charging and discharging processes.
- Support monitoring of charging machine/load access/removal;
- Support fire prevention management;
- Support intelligent balance management of battery cells;
- Support multiple working modes to reduce static power consumption;
- This product can be equipped with a Bluetooth module for parameter configuration and data monitoring through WeChat mini program human-computer interaction.
Operation mode transition
-
A. Switching from working mode to sleep mode:
a) Meet all of the following criteria件进入休眠模式
i.无通讯
ii.电流在±200ma内
iii.无故障 -
B. Switch from sleep mode to working mode:
a) Enter working mode if any of the following conditions are met
i. Insert charger
ii. Connect to vehicle
iii. Connect to communication -
C. Switching from working mode to shutdown mode:
a) Enter the working mode when any of the following conditions are met
i. The system issues a shutdown command through the upper computer
ii. After the minimum cell voltage is lower than the power-off protection value -
D. Switching from shutdown mode to working mode:
Simply insert the charger and charge briefly to activate the system. After activation, the system will enter working mode by default;
Electrical Block Diagram
Various electrical parameters are the default configuration parameters of this product when it leaves the factory. Relevant parameters can be customized by customers or adjusted appropriately according to customer needs through the matching upper computer.
precautions
1) This product supports up to 11S battery packs and can be used in series with multiple battery packs; During assembly, the circuit board should not come into contact with the surface of the battery cells to avoid short circuits; Ensure that the assembly is firm and reliable;
3) The power line and acquisition line should not be connected incorrectly or in reverse to avoid damaging the circuit board;
4) The cables from different manufacturers are not interchangeable. Please ensure to use our company's matching cables; During use, attention should be paid to anti-static, moisture-proof, waterproof, etc; Please follow the design parameters and usage conditions during use, otherwise it may damage the BMS and battery pack; If the battery pack is stored for a long time, it is recommended to charge the battery pack at least once every two months.
