The invention provides a voltage equalization circuit, a connection circuit, an equalization battery and a vehicle, and relates to the technical field of new energy. Comprising a gating branch, a balancing unit, a voltage acquisition unit and a logic control unit, the input end of each gating branch is connected with the input end of the positive relay of the corresponding battery branch, and the output ends of all gating branches are connected with the input end of the equalization unit; the voltage acquisition unit is used for acquiring the output voltage of each battery cell group and sending the output voltage to the logic control unit; the logic control unit is used for obtaining a voltage difference value, gating the branch according to the voltage difference value and controlling the positive relay and the negative relay to be switched on or switched off; and the output end of the equalization unit is the output end of the voltage equalization circuit, and the equalization unit is used for carrying out equalization processing on the voltage output by the switched-on gating branch. When the voltage difference between the battery cell groups connected in parallel is too large, the corresponding branch circuits of the voltage equalization circuit are gated for convergence, so that the battery branch circuits are prevented from being damaged by high-voltage overcurrent, and the stability of the battery circuit is improved.

    本申请提供一种电压均衡电路、连接电路、均衡电池及车辆,涉及新能源技术领域。包括选通支路、均衡单元、电压采集单元和逻辑控制单元;每一选通支路的输入端与对应电池支路正继电器的输入端连接,所有选通支路输出端与均衡单元输入端连接;电压采集单元用于采集每一电芯组的输出电压并发送给逻辑控制单元;逻辑控制单元用于得到电压差值并根据电压差值选通支路以及控制正、负继电器导通或断开;均衡单元的输出端为电压均衡电路的输出端,均衡单元用于对导通的选通支路输出的电压进行均衡处理。本申请在并联的电芯组之间的压差过大时,选通电压均衡电路的对应支路进行汇流,避免电池支路受到高压过流的损坏,提高电池电路的稳定性。


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    Title :

    Voltage equalization circuit, connection circuit, equalization battery and vehicle


    Additional title:

    电压均衡电路、连接电路、均衡电池及车辆


    Contributors:
    YANG HENG (author) / QIAN HAO (author) / LYU ZHE (author)

    Publication date :

    2023-07-07


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    Chinese


    Classification :

    IPC:    B60L PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES , Antrieb von elektrisch angetriebenen Fahrzeugen



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