The invention relates to the field of batteries, in particular to a lithium battery charge estimation method and system and an energy automobile, and the method comprises the steps: obtaining battery basic parameters of a lithium ion battery pack; according to the single voltage parameter of each single battery in the battery basic parameters, determining the charging and discharging conditions of the lithium ion battery pack; and according to the charging and discharging conditions and the battery basic parameters, calculating the whole pack charge parameters of the lithium ion battery pack. After the charging and discharging conditions are determined by utilizing the battery basic parameters, the whole pack charge parameters of the lithium ion battery pack are calculated through the battery basic parameters according to the charging and discharging conditions, so that comprehensiveness can be ensured by utilizing the battery basic parameters, different conditions of the lithium ion battery pack can be distinguished, and the SOC estimation accuracy is improved.

    本申请涉及电池领域,具体而言,涉及一种锂电池电荷估算方法、系统及能源汽车,其方法包括获取所述锂离子电池包的电池基础参数;根据所述电池基础参数中各所述单体电池的单体电压参数,确定所述锂离子电池包的充放电情况;根据所述充放电情况和所述电池基础参数计算得到所述锂离子电池包的整包电荷参数。利用电池基础参数确定充放电情况后,根据充放电情况,通过电池基础参数计算锂离子电池包的整包电荷参数,既能够利用电池基础参数保证全面性,又能够区分锂离子电池包的不同情况,提高了SOC的估算准确度。


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    Title :

    Lithium battery charge estimation method and system and energy automobile


    Additional title:

    锂电池电荷估算方法、系统及能源汽车


    Contributors:
    LIU MINTONG (author) / ZHANG XIN (author) / ZHANG ZHENFENG (author) / MA HONGLEI (author)

    Publication date :

    2024-03-22


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    Chinese


    Classification :

    IPC:    G01R Messen elektrischer Größen , MEASURING ELECTRIC VARIABLES / B60L PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES , Antrieb von elektrisch angetriebenen Fahrzeugen



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