Battery device and electric device

Abstract

This application provides a battery device and an electrical device. The battery device includes a battery assembly, which includes a housing and a plurality of solid-state batteries housed within the housing. Each solid-state battery includes an electrode assembly comprising a positive electrode layer, a solid electrolyte layer, and a negative electrode layer stacked along a first direction. The housing has a first wall and a second wall disposed opposite to each other along the first direction. The first wall and the second wall are configured to cooperate in clamping the plurality of solid-state batteries, allowing the positive electrode layer, solid electrolyte layer, and negative electrode layer of the solid-state batteries to fit more tightly. This enables effective contact between the positive electrode layer, solid electrolyte layer, and negative electrode layer, improving the ion and electron transport efficiency, thereby increasing conductivity and energy density, and enhancing the stability and reliability of the battery device. It also reduces the volume change of the solid-state batteries during operation, thereby improving the stability and lifespan of the battery device.

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