The invention relates to the technical field of battery safety detection, and provides a battery pack bulging detection method and system and a battery pack device, the battery pack bulging detection system comprises a battery management system with a plurality of chips, and a circuit board with a pressure sensor integrated module is attached to the surface of each battery cell in a battery pack, the battery management system comprises a microcontroller in communication connection with a circuit board, and the battery pack bulging detection method comprises the following steps: sensing bulging deformation of each battery cell through a pressure sensor integration module to obtain an actual deformation pressure value of each battery cell; and comparing the deformation pressure value with a preset pressure threshold value, determining whether each battery cell expands or not according to a comparison result of the deformation pressure value and the pressure threshold value, and sending the deformation pressure value to the microcontroller. The battery pack swelling detection method realizes full-scene and accurate detection of swelling deformation of the battery cell, can timely wake up the microcontroller in a dormant state, realizes timely early warning, and realizes low-power consumption battery pack swelling detection.

    本申请涉及电池安全检测技术领域,提供一种电池包鼓胀检测方法、系统和电池包设备,包含多个芯片的电池管理系统,电池包中每个电芯的表面附着有带有压感传感器集成模块的电路板,其中,电池管理系统包括与电路板通信连接的微控制器,该电池包鼓胀检测方法包括:通过压感传感器集成模块感应每个电芯的鼓胀形变,得到每个电芯的实际形变压力值;将形变压力值与预设的压力阈值进行比较,根据形变压力值与压力阈值的比较结果,确定每个电芯是否发生膨胀,并将形变压力值发送到微控制器。该电池包鼓胀检测方法实现全场景和准确检测电芯的膨胀形变,能够及时唤醒处于休眠状态的微控制器,实现及时预警,并且实现低功耗电池包鼓胀检测。


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    Title :

    Battery pack bulging detection method and system and battery pack equipment


    Additional title:

    一种电池包鼓胀检测方法、系统和电池包设备


    Contributors:
    XING YUNLING (author) / WANG WEI (author)

    Publication date :

    2024-08-16


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    Chinese


    Classification :

    IPC:    G01B MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS , Messen der Länge, der Dicke oder ähnlicher linearer Abmessungen / G01L Messen von Kraft, mechanischer Spannung, Drehmoment, Arbeit, mechanischer Leistung, mechanischem Wirkungsgrad oder des Drucks von Fluiden , MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE / 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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