All-solid-state battery
By positioning a resin coating at the center of the electrode stack and using a laminate film, stress concentration and damage are mitigated, ensuring stable operation of all-solid-state lithium metal batteries.
WO2025206359A1 Publication Date: 2025-10-02HONDA MOTOR CO LTD
4 Cites 0 Cited by
Patent Information
- Application Number
- PCT/JP2025/012917
- Authority / Receiving Office
- WO · WO
- Patent Type
- Applications
- Current Assignee / Owner
- Priority Date
- 2024-03-29
- Filing Date
- 2025-03-28
- Publication Date
- 2025-10-02
AI Technical Summary
Technical Problem
All-solid-state lithium metal batteries experience stress concentration and damage at the ends of the electrode stack due to expansion and contraction during charging and discharging, leading to abnormal lithium deposition and capacity decrease.
Method used
A resin coating is applied approximately at the center of the electrode stack, rather than both ends, with a laminate film enclosing the stack, to disperse compressive stress and prevent damage to the positive electrode and solid electrolyte layers.
Benefits of technology
The solution effectively suppresses stress concentration and damage to the positive electrode and solid electrolyte layers, preventing abnormal lithium precipitation and maintaining battery capacity.
✦ Generated by Eureka AI based on patent content.
Abstract
Provided is an all-solid-state battery capable of suppressing abnormal deposition of lithium metal due to localization of battery reaction or a reduction in the capacity of the all-solid-state battery by suppressing stress concentration to an end in the lamination direction of an electrode laminate against expansion and contraction of a negative electrode due to charging and discharging of the all-solid-state battery while suppressing damage to a positive electrode end against application of compressive stress due to a compression input. The all-solid-state battery comprises an electrode body in which a positive electrode current collector, a positive electrode layer, a solid electrolyte layer, a negative electrode layer, and a negative electrode current collector are laminated in this order, and is provided with an electrode laminate in which a plurality of electrode bodies are laminated. The all-solid-state battery comprises a laminate film including the electrode laminate, wherein a resin coat is disposed in at least a portion corresponding to a sealing part of the laminate film.
Need to check novelty before this filing date? Find Prior Art