The embodiment of the invention discloses a battery charging method. The method comprises the following steps: in a primary charging process of a battery, charging the battery by adopting a constant-current charging mode based on a first charging rate; when the voltage of the battery rises to a preset charging cut-off voltage, obtaining the charging capacity of the battery; based on the charging cut-off voltage, the battery is charged in a constant-voltage charging mode; acquiring the real-time capacity of the battery and comparing the real-time capacity with a preset cut-off capacity; and when the real-time capacity reaches the cut-off capacity, charging of the battery is ended, the charging rate when the real-time capacity is equal to the cut-off capacity is obtained, and the charging rate is used as a reference basis of a second charging rate during subsequent charging of the battery. According to the method, deterioration caused by mismatching of the charging rate of the battery and the actual capacity of the battery can be relieved, and the service life of the battery is prolonged. The embodiment of the invention further provides a battery charging device, a battery management system and a vehicle.

    本申请的实施例公开了一种电池充电方法。该方法包括:在电池的一次充电过程中,基于第一充电倍率,采用恒流充电模式对电池进行充电;电池的电压升高至预设的充电截止电压时,获取电池的充电容量;基于充电截止电压,采用恒压充电模式对电池进行充电;获取电池的实时容量并将实时容量与预设的截止容量进行比较;在实时容量达到截止容量时结束对电池的充电,并获取实时容量等于截止容量时的充电倍率,充电倍率用于作为电池的后续充电时的第二充电倍率的参考依据。本发明的方法能够缓解电池的充电倍率和电池实际容量不匹配带来的恶化,提高电池使用寿命。本发明的实施例还提供了一种电池充电装置、电池管理系统及车辆。


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    Title :

    Battery charging method and device, battery management system and vehicle


    Additional title:

    电池充电方法和装置、电池管理系统及车辆


    Contributors:

    Publication date :

    2022-06-10


    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 / H01M Verfahren oder Mittel, z.B. Batterien, für die direkte Umwandlung von chemischer in elektrische Energie , PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY



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