Battery cell, and battery pack and vehicle including same
The cylindrical battery cell integrates the can lead and electrode collector plate without beading and crimping, achieving higher energy density and simplified assembly by using a sloped open end for efficient fitting and welding.
WO2026014923A1PCT designated stage Publication Date: 2026-01-15LG ENERGY SOLUTION LTD
Patent Information
- Application Number
- PCT/KR2025/009971
- Authority / Receiving Office
- WO · WO
- Patent Type
- Applications
- Current Assignee / Owner
- Priority Date
- 2025-06-24
- Filing Date
- 2025-07-09
- Publication Date
- 2026-01-15
AI Technical Summary
Technical Problem
Conventional cylindrical battery cells with beading and crimping portions face production defects, reduced energy density, and complex assembly processes, necessitating a simpler and more efficient assembly structure between the can housing and can lead.
Method used
A cylindrical battery cell design that integrates the can lead and electrode collector plate without beading and crimping portions, featuring a sloped open end for seamless fitting and welding, ensuring airtightness and high energy density.
Benefits of technology
The new design enhances energy density, simplifies assembly, and prevents changes in the can housing's outer diameter, improving production yield and assembly efficiency.
✦ Generated by Eureka AI based on patent content.
Smart Images
Figure KR2025009971_15012026_PF_FP_ABST
Abstract
A battery cell according to the present invention comprises: an electrode assembly in which a first electrode, a second electrode, and a separator interposed therebetween are wound around a winding axis; a can housing having an open end portion so that the electrode assembly can be inserted therein; a cell terminal which is electrically connected to the first electrode, and which is provided in a closed portion of the can housing positioned on the opposite side of the open end portion; an electrode current collector plate which is electrically connected to the second electrode and which is in contact with the inner side surface of the open end portion; and a can lead mutually coupled with the open end portion so as to seal the can housing, wherein the can lead includes a lead side surface portion forming the outer circumference thereof, and the lead side surface portion can be fitted and coupled to the inner side surface of the open end portion with an electrode current collector plate end portion, interposed therebetween, forming the outermost edge of the electrode current collector plate.
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Citation Information
Patent Citations
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