Battery pack thermal management method and device, storage medium and electronic device

Abstract

The invention discloses a battery pack thermal management method and device, a storage medium and an electronic device. The method comprises the following steps of acquiring the current temperature ofa battery pack and the working state information of the battery pack; determining the maximum working power information of the battery pack according to the current temperature and the working stateinformation; inputting the maximum working power information, the current temperature and the working state information into a battery model assembly to obtain the heating temperature of the battery pack; judging whether the sum value of the heating temperature and the current temperature is smaller than a preset first temperature threshold value or not; and if the sum value of the heating temperature and the current temperature is smaller than the preset first temperature threshold value, determining the energy required for heating the battery pack according to the heating temperature, and starting the heating assembly, so that the heating assembly heats the battery pack according to the energy required for heating. According to the technical scheme, the heating temperature of the internal resistance is considered, and the obtained required heating or cooling energy is more accurate, so that the energy is saved.

Description

technical field [0001] The invention relates to the field of battery pack heat management, in particular to a battery pack heat management method, device, storage medium and electronic equipment. Background technique [0002] Electric vehicles use power battery packs to drive motors to run. In the prior art, lithium batteries are mostly used as power sources for battery packs. Lithium batteries generate heat during charging and discharging. If the generated heat cannot be dissipated to the external environment in time or accumulated inside the battery, it will increase the temperature of the battery, reduce the performance of the battery, and even cause thermal runaway. [0003] The battery itself has a specific suitable operating temperature. If the temperature is too high or too low, it will affect the performance, service life and safety performance of the battery. A thermal management system is currently used to keep the battery pack temperature within the required ra...

AI Technical Summary

Problems solved by technology

However, in the prior art, only one temperature point is used as the target temperature to calculate the energy required for battery cooling and heating, which will lead to unreasonable energy distribution and increase energy consumption.

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