Insulation sheet between battery cells for electric vehicles
The dual-surface design with varying pore distribution and roughness in the insulation sheet addresses powder shedding issues, maintaining consistent thermal insulation by capturing delaminated silica aerogel and improving adhesion, thereby enhancing overall insulation performance.
JP2026079676APending Publication Date: 2026-05-15SUMITOMO RIKO CO LTD
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Patent Information
- Authority / Receiving Office
- JP · JP
- Patent Type
- Applications
- Current Assignee / Owner
- SUMITOMO RIKO CO LTD
- Filing Date
- 2025-04-21
- Publication Date
- 2026-05-15
AI Technical Summary
Technical Problem
Conventional silica aerogel insulation sheets for electric vehicle batteries suffer from powder shedding due to stress and vibration, leading to uneven insulation performance and reduced thermal insulation effectiveness.
Method used
The insulation sheet is designed with two surfaces having different pore distributions and surface roughness, one surface with a higher number or larger roughness to capture peeled silica aerogel, while the other surface minimizes stress and vibration, preventing delamination and powder shedding.
Benefits of technology
The sheet effectively suppresses powder shedding, maintaining high thermal insulation performance by capturing delaminated silica aerogel and enhancing adhesion, thus ensuring consistent insulation across the entire sheet.
✦ Generated by Eureka AI based on patent content.
Smart Images
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Abstract
The present invention aims to provide an inter-cell insulation sheet for electric vehicle batteries containing silica aerogel that can prevent powder shedding. [Solution] The present invention provides an electric vehicle battery cell insulation sheet comprising silica aerogel and fibers, having a plurality of voids on one surface and the other surface in the thickness direction, and the ratio of the number of voids on one surface to the number of voids on the other surface being 1.3 or more.
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