Electric storage cell
By incorporating metal pieces with openings or varying radial lengths to facilitate electrolyte flow, the issue of electrolyte penetration hindrance in energy storage cells is resolved, ensuring efficient electrolyte distribution and cell functionality.
JP2026015611APending Publication Date: 2026-01-29TOYOTA JIDOSHA KK
4 Cites 0 Cited by
Patent Information
- Application Number
- JP2025202891
- Authority / Receiving Office
- JP · JP
- Patent Type
- Applications
- Current Assignee / Owner
- Filing Date
- 2025-11-25
- Publication Date
- 2026-01-29
AI Technical Summary
Technical Problem
The presence of metal pieces at the axial ends of a wound electrode body in existing energy storage cells hinders the flow of electrolyte into the separator, leading to penetration issues.
Method used
Incorporating metal pieces with openings, such as holes or notches, at the ends of the wound electrode assembly to allow electrolyte flow, or configuring metal pieces with varying radial lengths to create gaps for electrolyte passage, preventing interference with the separator.
Benefits of technology
Prevents electrolyte penetration hindrance by metal pieces, ensuring efficient electrolyte distribution and maintaining cell functionality by allowing unhindered flow into the separator.
✦ Generated by Eureka AI based on patent content.
Abstract
To provide a power storage cell in which, when a plurality of metal pieces are provided at an end of a wound electrode body in an axial direction, penetration of an electrolyte into a separator can be prevented from being hindered by the metal pieces.SOLUTION: The electric storage cell 100 includes a wound electrode body 1 that includes a positive electrode plate 10 (first electrode), a negative electrode plate 20 (second electrode), and separators 30. The positive electrode plate 10 includes a plurality of partial side 1a (metal pieces) provided on the side 11d at the end in the Z direction (axial direction). A through-hole 11d (opening) is formed in each partial 11f.SELECTED DRAWING: Figure 3
Need to check novelty before this filing date? Find Prior Art