Electricity storage device and method for manufacturing the same.
The use of an insulating film bonded to current collectors and the lid in the electrode assembly within the case body addresses tab damage issues in electricity storage devices, enhancing manufacturing efficiency and reducing costs.
JP7756683B2Active Publication Date: 2025-10-20PRIME PLANET ENERGY & SOLUTIONS INC
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Patent Information
- Application Number
- JP2023101405
- Authority / Receiving Office
- JP · JP
- Patent Type
- Patents
- Current Assignee / Owner
- Filing Date
- 2023-06-21
- Publication Date
- 2025-10-20
- Estimated Expiration
- 2043-06-21
AI Technical Summary
Technical Problem
Existing electricity storage devices face issues with damage to electrode tabs due to relative movement between the electrode body and current collectors during manufacturing and use, which can increase manufacturing costs and part count.
Method used
An insulating film made of resin is used to cover the electrode assembly and is bonded to the current collectors and lid, restraining the electrode assembly within the case body to prevent movement and reduce tab damage.
Benefits of technology
The insulating film effectively prevents tab damage by restraining the electrode assembly, reducing manufacturing costs and part count without additional fixing members, while maintaining structural integrity.
✦ Generated by Eureka AI based on patent content.
Abstract
To reduce damage to an electrode tab.SOLUTION: A power storage device 100 includes an electrode body 40, a case body 52, a lid 54, terminals 60, 65, an insulating member 94, current collectors 70, 75, and an insulating film 98. The electrode body 40 has tabs 42, 44. The insulating film 98 is disposed in the case body 52 so as to cover the electrode body 40. The insulating film 98 is made of a resin film that insulates the case body 52 and the electrode body 40. The insulating film 98 is joined to at least one of the lid 54, the insulating member 94 attached to the lid 54, and the current collectors 70, 75.SELECTED DRAWING: Figure 7
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