Fastening devices and battery packs including fastening devices
Patent Information
- Authority / Receiving Office
- JP · JP
- Patent Type
- Applications
- Current Assignee / Owner
- LG ENERGY SOLUTION LTD
- Filing Date
- 2024-07-05
- Publication Date
- 2026-06-16
AI Technical Summary
【0009】 本発明の好ましい実施形態によると、内部発火または高温のガスの発生時に、構造的安定性が向上することができる。
Smart Images
Figure 2026519605000001_ABST
Abstract
Claims
1. The head section, A threaded portion provided to be fastened to the head portion, A fastening device comprising a joining member formed on the threaded portion along the outer circumference of the head portion, which melts when it reaches a predetermined temperature or higher.
2. The head portion is, The side that is fastened with the screw portion includes a first connecting portion, The aforementioned threaded portion is Including a second connecting portion fastened to the first connecting portion, The aforementioned joining member is The fastening device according to claim 1, formed on the second joint along the outer circumference of the first joint.
3. The outer diameter of the aforementioned joining member is Larger than the outer diameter of the first joint, The fastening device according to claim 2, wherein the outer diameter is smaller than or the same as that of the second joint.
4. The aforementioned joining member is A fastening device according to any one of claims 1 to 3, having a circular band shape.
5. The aforementioned joining member is The fastening device according to claim 2 or 3, wherein the outer diameter of the second joint is even larger than the outer diameter of the first joint.
6. The aforementioned joining member is The fastening device according to claim 2 or 3, which covers the area of the second joint that faces the head portion when the first joint and the second joint are joined, and is visible from the outside.
7. The head portion is, The opposite side of the first joint includes a bolt head formed in a polygonal shape, The first joint portion includes, A recessed insertion groove is formed in the shape of a polygon. The second joint portion is, The fastening device according to claim 2 or 3, wherein a protruding portion is formed in a polygonal shape so as to be inserted into the insertion groove.
8. The aforementioned joining member is The fastening device according to claim 2 or 3, which is joined to the first joint and the second joint by brazing welding.
9. The outer diameter of the second joint is The fastening device according to claim 2 or 3, which is larger than the outer diameter of the first joint.
10. A housing frame provided for housing the battery, A cover lead is connected to the aforementioned housing frame and covers the open upper part of the housing frame, Includes a fastening device that connects the housing frame and the cover lead, The fastening device is The head portion that connects to the cover lead, A screw portion fastened to the head portion and fixed to the housing frame, A battery pack comprising a joining member formed on the threaded portion along the outer circumference of the head portion, which melts when it reaches a predetermined temperature or higher.
11. The head portion is, The side that is fastened with the screw portion includes a first connecting portion, The aforementioned threaded portion is Including a second connecting portion fastened to the first connecting portion, The aforementioned joining member is The battery pack according to claim 10, formed on the second coupling portion along the outer circumference of the first coupling portion.
12. The battery pack according to claim 11, wherein the outer diameter of the second coupling portion is larger than the outer diameter of the first coupling portion.
13. The housing frame and the cover lead are, The battery pack according to any one of claims 10 to 12, wherein the bond is released when the bonding member melts at a temperature above a predetermined level.