Automatic equalizing charging device for series-connected battery set
A technology of series-connected battery packs and automatic equalization, applied in battery circuit devices, circuit devices, electric vehicles, etc., can solve the problem of sacrificing charging efficiency, and achieve the effect of high charging efficiency, high efficiency and fast charging speed.
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[0025] The implementation of the present invention will be further described below in conjunction with actual examples.
[0026] The series-connected battery pack 1 of lithium-ion power batteries to be charged is composed of 84 single cells, each cell has a capacity of 55Ah (Ah·hour), and the maximum charging current I M , The highest terminal voltage of the battery V M It is 4.15V. The two ends of each cell of the battery pack are connected to the battery voltage signal real-time acquisition and isolation amplifier circuit 2 and the discharge network 5 through wires. The isolation amplifier circuit 2 sends the voltage signal to the main control board 3 after photoelectric isolation. The charging power supply 4 is an inverter-type charging power supply with a maximum output power of 3.5Kw and an output current of 0-10A. The positive output terminal of the charging power source 4 is connected to the positive input terminal of the battery pack, and the negative output terminal is co...
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