A battery device and an electrical device

Abstract

This application discloses a battery device and an electrical device. The battery device includes multiple battery cells and a temperature equalization assembly. The temperature equalization assembly includes a temperature equalization element, a liquid absorbent wick, and a phase change working fluid. The temperature equalization element is in contact with at least two battery cells and forms a phase change channel. The liquid absorbent wick is accommodated in at least a portion of the phase change channel, and the phase change working fluid is located within the phase change channel. The phase change working fluid can switch between a liquid and a gaseous state under the influence of the battery cell temperature. The liquid absorbent wick is used to wet the liquid phase change working fluid. Thus, the temperature equalization element is in contact with at least two battery cells, facilitating heat transfer between the temperature equalization element and the battery cells. The temperature equalization of multiple battery cells is achieved through the state change of the phase change working fluid, reducing the temperature difference between the multiple battery cells and improving the overall performance of the battery device.

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