The invention relates to a peak voltage absorption circuit, a lithium battery protection board, a lithium battery and a generator, which are applied to the lithium battery protection board, and comprise a voltage sampling module connected in parallel to two ends of the generator and used for collecting real-time voltage when the generator charges the lithium battery; the switch module is connected with the voltage sampling module, and the state of the switch module is determined according to the real-time voltage collected by the voltage sampling module; the isolation module is connected between the switch module and the peak voltage absorption module so as to perform electrical isolation and signal isolation; the peak voltage absorption module comprises a charging MOS tube Q1, and the charging MOS tube Q1 is respectively connected with the isolation module and a lithium battery; the peak voltage absorption module controls the charging MOS tube Q1 to be switched on according to the first level signal, and the peak voltage absorption module controls the charging MOS tube Q1 to be switched off according to the second level signal. Impulse voltage is absorbed through the peak voltage absorption circuit, and reliable operation of the automobile and the lithium battery pack is guaranteed.

    本发明一种峰压吸收电路、锂电池保护板、锂电池、发电机,应用于锂电池保护板,包括:电压取样模块,并联于发电机两端,采集发电机给锂电池充电过程中的实时电压;开关模块,连接所述电压取样模块,根据所述电压取样模块采集到的实时电压确定所述开关模块的状态;隔离模块,连接于开关模块与峰压吸收模块之间,以进行电气隔离及信号隔离;峰压吸收模块,包括充电MOS管Q1,所述充电MOS管Q1分别连接所述隔离模块与锂电池;所述峰压吸收模块根据所述第一电平信号控制所述充电MOS管Q1导通,所述峰压吸收模块根据所述第二电平信号控制所述充电MOS管Q1截止。本发明通过峰压吸收电路吸收冲击电压,保障汽车和锂电池组运行可靠。


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    Title :

    Peak voltage absorption circuit, lithium battery protection board, lithium battery and generator


    Additional title:

    一种峰压吸收电路、锂电池保护板、锂电池、发电机


    Contributors:
    BAO XUDONG (author) / LI HAIBO (author) / FAN QIAN (author) / SHI XINGSHENG (author)

    Publication date :

    2024-02-23


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    Chinese


    Classification :

    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 / B60R Fahrzeuge, Fahrzeugausstattung oder Fahrzeugteile, soweit nicht anderweitig vorgesehen , VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR / H02H EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS , Schutzschaltungsanordnungen



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