The invention discloses a method and a device for determining a power limit value of a power battery. The method comprises the following steps: acquiring target working condition data of a vehicle; based on the first temperature value and a target temperature value of the power battery, determining a first power limit proportion value of the power battery in a pulse temperature rise table; determining a second power limit proportion value of the power battery based on the power performance target data and the target evaluation data of the vehicle; determining a minimum value between the first power limit proportion value and the second power limit proportion value as a target power limit proportion value of the power battery; and determining a power limit value of the power battery based on the target power limit proportion value and the allowable power value of the power battery. The technical problems that a battery high-temperature power limit protection method cannot cover the working condition of high vehicle speed response and cannot give consideration to the use safety of the battery and the vehicle, the power performance of the vehicle and the use experience of a user at the same time are solved.

    本发明公开了一种确定动力电池的功率限制值的方法和装置。其中,该方法包括:获取车辆的目标工况数据;基于第一温度值、动力电池的目标温度值,在脉冲温升表格中,确定动力电池的第一功率限制比例值;基于车辆的动力性能目标数据和目标评估数据,确定动力电池的第二功率限制比例值;将第一功率限制比例值与第二功率限制比例值二者之间的最小值,确定为动力电池的目标功率限制比例值;基于目标功率限制比例值和动力电池的许用功率值,确定动力电池的功率限制值。本发明解决了电池高温功率限制保护方法无法覆盖车速响应较快的工况、不能同时兼顾电池及车辆的使用安全、车辆动力性能及用户使用体验的技术问题。


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    Title :

    Method and device for determining power limit value of power battery


    Additional title:

    确定动力电池的功率限制值的方法和装置


    Contributors:
    WANG WENTING (author) / WANG SHUYANG (author) / WANG YEBIN (author) / SUN HUANLI (author) / XU LICHAO (author)

    Publication date :

    2023-06-23


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    Chinese


    Classification :

    IPC:    B60L PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES , Antrieb von elektrisch angetriebenen Fahrzeugen / G01R Messen elektrischer Größen , MEASURING ELECTRIC VARIABLES / G06F ELECTRIC DIGITAL DATA PROCESSING , Elektrische digitale Datenverarbeitung



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