The invention discloses a power battery pack temperature prediction method and system. The method comprises the following steps: determining heat generation model parameters, heat exchange model parameters and temperature measurement and calculation model parameters; evaluating average heat generation power in a future period of time and heat exchange power between the battery pack and the environment based on the heat generation model parameters, the heat exchange model parameters and the temperature measurement and calculation model parameters; and predicting the temperature after a period of time in the future based on the average heat generation power, the heat exchange power and the current temperature. The battery pack temperature change is predicted by considering the charging and discharging requirements of the future application condition of the vehicle on the battery and the environment change, the prediction is more accurate and reliable, and a basis is provided for batterypack temperature management.
本发明公开了一种动力电池包温度预测方法及系统。过程为:确定生热模型参数、热交换模型参数、温度测算模型参数;基于所述生热模型参数、热交换模型参数、温度测算模型参数评估未来一段时间内的平均生热功率和电池包与环境之间的热交换功率;基于平均生热功率、热交换功率及当前时刻温度预测未来一段时间后的温度。本发明考虑了车辆未来应用工况对电池的充放电需求和环境变化来预测电池包温度变化,预测更为准确可靠,为电池包温度管理提供了依据。
Power battery pack temperature prediction method and system
一种动力电池包温度预测方法及系统
2020-11-17
Patent
Electronic Resource
Chinese
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