A battery voltage equalization device (1) for a vehicle-mounted battery (Bm) comprising a plurality of batteries (B) connected in series is provided with: a voltage measurement unit (2) for measuring the battery voltage of each of the batteries (B); a current measurement unit (4) that measures the charge/discharge current (I) of the in-vehicle battery (Bm); a cell balancing unit (7) that equalizes the cell voltage of each of the cells (B); and a control unit (8) that performs voltage balancing control via the cell balancing unit (7) on the basis of the battery voltages measured by the voltage measurement unit (2), the control unit (8) starting the voltage balancing control on the condition that it is determined that the voltage balancing control is necessary on the basis of each battery voltage and that the discharge current (Id) of the in-vehicle battery (Bm) measured by the current measurement unit (4) is stable.
由串联连接的多个电池(B)构成的车载用电池(Bm)的电池电压均衡装置(1)包括:测量电池(B)各自的电池电压的电压测量部(2);测量车载用电池(Bm)的充放电电流(I)的电流测量部(4);对电池(B)各自的电池电压进行均衡化的单元平衡部(7);以及基于电压测量部(2)测量的电池电压,经由单元平衡部(7)进行电压均衡控制的控制部(8),控制部8以基于每一个电池电压判定需要进行电压均衡控制并且判定电流测量部(4)测量的车载用电池(Bm)的放电电流(Id)是稳定的为条件,开始电压均衡控制。
Battery voltage balancing device
电池电压均衡装置
2022-11-25
Patent
Electronic Resource
Chinese
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