Battery balancer
From Wikipedia, the free encyclopedia
A battery balancer is a device in a battery pack which can actively shuttle energy into a weak cell from other more healthy cells in the pack, they may also include the function of a battery regulator to prevent overcharging. Balancers are often found in Lithium ion battery packs for cell phones and laptop computers. They can also be found in BEV battery packs.
A full Battery Management System (BMS) might include active balancing as well as temperature monitoring, charging, and other features to maximize the life of a battery pack.
The battery contains more than one cell in either series or parallel or both. When the battery gets discharged if all the cells discharge at different rates, the voltage of each cell is different when the battery is fully discharged. Now if the battery is charged connecting only 2 wires all the cells cannot be charged properly because all the cells are in series or parallel. The battery balancer provides solution to this problem. It charges all the cells individually.
