12V Lithium Battery Management System (BMS)

In the vehicle system, the 12V vehicle power supply mainly supplies power to low-power devices such as interior lighting and windshield wipers, as well as in-vehicle Electronic Control Units (ECU). It also undertakes the start-stop function in HEVs and fuel vehicles.

At present, lead-acid batteries have been widely applied in the vehicle battery field by virtue of low cost and mature technology. However, their shortcomings such as short service life and environmental pollution have become increasingly prominent.

With the development of automobiles toward intelligence and connectivity, the power consumption of electrical accessories is gradually increasing, and a growing number of intelligent devices require higher power supply capacity. Compared with lead-acid batteries, lithium batteries feature longer service life, smaller size, lighter weight and better environmental performance. The replacement of lead-acid batteries with lithium batteries in the start-stop power supply field has become an irresistible trend.

The Battery Management System (BMS) serves as the core control unit of the 12V battery. Through the control loop of the BMS, the battery provides stable and reliable voltage output for the vehicle low-voltage system.

By collecting the voltage, current and temperature of each single cell, the BMS controls the safe and reliable discharging and charging of the battery via corresponding algorithms. Meanwhile, once extreme operating conditions such as external short circuit are detected, the power supply system will be cut off in a timely manner to ensure vehicle safety.

The 12V BMS designed by ZKYC adopts ASIL-D grade devices for the main control unit, power management unit and analog front-end sampling unit.

Equipped with mature, reliable and high-precision BMS hardware as well as basic software with standardized AUTOSAR architecture, it greatly facilitates customers to develop intelligent and high-precision battery management algorithms.

The whole board features compact size, low static power consumption, high sampling accuracy, easy installation and excellent safety performance.