Notice:
You need to equip your own relays.
1 Overview
JK-B2A25S-RP battery management system is a battery management system tailored for large-capacity series lithium battery packs.
The system is suitable for battery packs with 3 to 25 strings, and has the functions of battery protection, voltage acquisition and voltage equalization.
The balance function of the system uses super capacitors as the medium to achieve active energy transfer balance.
When the system is working, it realizes battery protection functions such as overcharge, overdischarge protection and short circuit protection, and transfers energy with a continuous maximum 2A equalizing current. The equalizing current does not depend on the voltage difference of the battery cells in series in the battery pack.
The voltage acquisition range is 1V~5V, and the accuracy is ±3mV. External communication interface can choose RS485 bus, CAN bus, GPS interface or LCD interface.
It can be applied to all types of batteries on the market such as lithium iron phosphate, ternary lithium, titanic acid, and lithium lead acid. The system has Bluetooth communication function and is equipped with mobile APP software.
You can connect the device system through Bluetooth to check the voltage of the single battery, check the balance status, and modify the setting parameters. It can be used in battery packs of small sightseeing cars, scooters, forklifts, shared cars, high-power energy storage, base station backup power, solar power plants, etc. It can also be used in battery balance maintenance, repair and other occasions.
2 Main technical parameters
Main functions and technical indicators
◆ Support 3 to 25 battery packs;
◆ Overcharge, overdischarge voltage protection and overcurrent protection parameters can be set through APP, with short circuit protection function;
◆ Real-time, active balancing, balancing current 2A, voltage difference between cells after balancing ≤5mV;
◆ Support charge, discharge, discharge precharge relay control function, relay drive voltage 12V;
◆ Support 3 temperature probes;
◆ Single voltage range 1V ~ 4.5V, accuracy ±5mV;
◆ With coulomb counter function;
◆ Suitable for large-capacity ternary, lithium iron, lithium titanate and other lithium battery packs; ◆ Bluetooth communication function, equipped with APP, can check the battery status in real time;
◆ Support external interface: GPS interface, CAN interface, RS485 needs to be customized; ◆ Low-voltage shutdown function to prevent battery damage caused by over-discharge;
◆ Heating function, maximum support 5A heating current;
◆ Support ACC ignition switch for key start discharge;
◆ Diverter specification setting function, easy to replace different shunts.
Environmental conditions for use a) Operating temperature range: -20℃～70℃; b) Power requirements: 16V~100V, which can be powered by battery self-powered or external power. c) Power consumption: the maximum power consumption of the protection board is 1.5W (excluding the power consumption of the relay), and the power consumption of the shutdown is 20mW.
3 Connector and Interface Description
Front panel connector, LED light location description The front connector, lighted switch location is shown in Figure 1.
Dimensions JK-B2A25S-RP equalizer size is 188.6mm×94mm×23.5mm,