The invention relates to the technical field of battery detection, and provides a battery state detection method and device for an electric vehicle. The method comprises the steps that in the current charging period of charging of the electric vehicle, state parameter pairs of a power battery of the electric vehicle in the current charging period are obtained; generating a current Q-V relation curve of the power battery according to the state parameter pairs of the current charging period; and according to a first Hamming distance between the current Q-V relation curve and an initial Q-V relation curve of the power battery and a second Hamming distance between the initial Q-V relation curve and a scrapped Q-V relation curve of the power battery, determining the battery health state of the power battery in the current charging period. According to the battery state detection method of the electric vehicle, the detection efficiency and the detection accuracy of the health state of the power battery can be improved.

    本申请涉及电池检测技术领域,提供一种电动车的电池状态检测方法及装置。所述方法包括:在电动车进行充电的当前充电时段,获取电动车的动力电池在当前充电时段的各状态参数对;根据当前充电时段的各状态参数对,生成动力电池的当前Q‑V关系曲线;根据当前Q‑V关系曲线与动力电池的初始Q‑V关系曲线的第一汉明距离,以及初始Q‑V关系曲线与动力电池的报废Q‑V关系曲线的第二汉明距离,确定动力电池在当前充电时段的电池健康状态。本申请实施例提供的电动车的电池状态检测方法能够提高对动力电池健康状态的检测效率和检测准确度。


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    Title :

    Battery state detection method and device for electric vehicle


    Additional title:

    电动车的电池状态检测方法及装置


    Contributors:

    Publication date :

    2023-04-07


    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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