Secondary battery and battery box including same
The secondary battery design incorporates a sealing portion to manage gas or flame discharge, addressing stability issues by guiding them towards the sealing portion, thereby enhancing structural stability.
WO2026116841A1PCT designated stage Publication Date: 2026-06-04LG ENERGY SOLUTION LTD
Patent Information
- Authority / Receiving Office
- WO · WO
- Patent Type
- Applications
- Current Assignee / Owner
- LG ENERGY SOLUTION LTD
- Filing Date
- 2025-11-12
- Publication Date
- 2026-06-04
AI Technical Summary
Technical Problem
Secondary batteries used in medium and large-scale applications face challenges in controlling the discharge direction of gases or flames during abnormal situations, which can lead to thermal runaway phenomena, reducing their stability.
Method used
A secondary battery design with a sealing portion that covers the gap between the cap and the rim portion of the outer film, using a heat-resistant material to guide the discharge of gas or flame towards the sealing portion, enhancing stability by suppressing leakage.
Benefits of technology
The sealing portion effectively controls the discharge of gases or flames, improving the structural stability of the secondary battery even under harsh conditions by preventing leakage through the gap between the cap and outer film.
✦ Generated by Eureka AI based on patent content.
Smart Images
Figure KR2025018614_04062026_PF_FP_ABST
Abstract
The present invention relates to a secondary battery and a battery box including same. The secondary battery according to one aspect of the present invention may comprise: an electrode assembly extending in one direction; a cap covering one side of the electrode assembly in the extension direction; an exterior film that includes an accommodation portion surrounding the electrode assembly in the circumferential direction and an edge portion provided on one side of the accommodation portion in the extension direction and coupled to the cap; and a sealing part covering a gap between the cap and the edge portion from outside the cap.
Need to check novelty before this filing date? Find Prior Art