Battery system

By controlling the state of charge and applying pressure to silicon particles with a clathrate type II crystalline phase, the battery system addresses the issue of contact loss due to volume changes, enhancing electrical performance through stabilized contacts in the negative electrode layer.

JP7885720B2Active Publication Date: 2026-07-07TOYOTA JIDOSHA KK
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Patent Information

Authority / Receiving Office
JP · JP
Patent Type
Patents
Current Assignee / Owner
TOYOTA JIDOSHA KK
Filing Date
2023-04-12
Publication Date
2026-07-07

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Abstract

To recover contacts in a negative electrode layer.SOLUTION: A battery system includes a control device. The control device is configured to perform a first control and a second control. The first control includes placing an all-solid-state battery in an over-discharge state. The second control includes pressurizing the all-solid-state battery in the over-discharge state. The all-solid-state battery includes a positive electrode layer, a solid electrolyte layer, and a negative electrode layer, in this order. The negative electrode layer includes silicon grains. The silicon grains include a clathrate II crystalline phase.SELECTED DRAWING: Figure 2
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