The invention provides a battery equalization circuit which comprises a battery equalization chip and an equalization battery pack, the equalization battery pack comprises M batteries connected in series, and M is a positive integer greater than 2; the battery equalization chip comprises an equalization control unit and a battery equalization unit. The equalization control unit is used for outputting a target battery equalization control signal to the battery equalization unit; the battery equalization unit comprises M equalization sub-units, each battery corresponds to one equalization sub-unit, and the battery equalization unit is used for controlling the target equalization sub-unit to be switched on and other equalization sub-units to be switched off according to the target battery equalization control signal, and performing battery equalization on the target battery, according to the invention, the switching-on and switching-off of the equalization subunits can be controlled by controlling the output states of the conduction current source and the cut-off current source, the equalization current is kept constant, rapid equalization of the equalization battery pack is realized, and the problems that the switching-on and switching-off are controlled by using the voltage of the battery itself, and the current is small when the equalization current is low along with the change of the voltage of the battery are avoided.
本申请提供了一种电池均衡电路,包括:电池均衡芯片和均衡电池组,均衡电池组包括M个串联连接的电池,M为大于2的正整数;电池均衡芯片包括:均衡控制单元和电池均衡单元;均衡控制单元用于向电池均衡单元输出目标电池均衡控制信号;电池均衡单元包括:M个均衡子单元,每一个电池对应一个均衡子单元,电池均衡单元用于根据目标电池均衡控制信号控制目标均衡子单元导通、其余均衡子单元关断,对目标电池进行电池均衡,能够通过控制导通电流源和截止电流源的输出状态来控制均衡子单元的开启和关闭,保持均衡电流恒定,实现对均衡电池组进行快速均衡,避免了利用电池自身的电压控制开启和关闭,均衡电流随电池电压变化低电压时电流较小的问题。
Battery equalization circuit
一种电池均衡电路
2024-12-03
Patent
Electronic Resource
Chinese
IPC: | H02J CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER , Schaltungsanordnungen oder Systeme für die Abgabe oder Verteilung elektrischer Leistung / B60L PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES , Antrieb von elektrisch angetriebenen Fahrzeugen / H01M Verfahren oder Mittel, z.B. Batterien, für die direkte Umwandlung von chemischer in elektrische Energie , PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY |
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