The invention discloses a bidirectional active equalization BMS circuit. The BMS circuit comprises a battery pack with n single batteries, n same secondary circuits, a transformer T1, a primary circuit and a control chip U10; the transformer T1 comprises a primary winding with a first tap, a second tap and a third tap, and n secondary windings with a first tap, a second tap and a third tap; and the primary winding is connected with the primary circuit, the n secondary windings are respectively and correspondingly connected with one sides of the n same secondary circuits, the other sides of then secondary circuits are respectively connected with the n single batteries in parallel, and n is greater than or equal to 2. According to the invention, the energy with relatively high single energyis transferred to the battery with relatively low energy through the energy storage link in a bidirectional charging and discharging manner, so that active equalization is realized, and the energy loss is effectively reduced.
本发明公开了一种双向主动均衡的BMS电路,包括具有n个单体电池的电池组、n个相同的次级电路、变压器T1、初级电路和控制芯片U10,所述变压器T1包括具有第一抽头、第二抽头、第三抽头的初级绕组和具有第一抽头、第二抽头、第三抽头的n个次级绕组,所述初级绕组连接所述初级电路,所述n个次级绕组分别对应连接n个相同的次级电路的一侧,n个次级电路的另一侧分别并联所述n个单体电池,n≥2,也公开了一种双向主动均衡的BMS电路的控制方法。本发明通过双向充放电的形式将单体能量稍高的能量通过储能环节转移到能量稍低的电池上去,实现主动均衡,有效降低能量损耗。
Bidirectional active equalization BMS circuit and control method thereof
一种双向主动均衡的BMS电路及其控制方法
2020-07-31
Patent
Electronic Resource
Chinese
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