CN2373901Y - Safety square-shaped rechargeable lithium battery - Google Patents
Safety square-shaped rechargeable lithium battery Download PDFInfo
- Publication number
- CN2373901Y CN2373901Y CN 99203712 CN99203712U CN2373901Y CN 2373901 Y CN2373901 Y CN 2373901Y CN 99203712 CN99203712 CN 99203712 CN 99203712 U CN99203712 U CN 99203712U CN 2373901 Y CN2373901 Y CN 2373901Y
- Authority
- CN
- China
- Prior art keywords
- shell
- utility
- safety valve
- rechargeable lithium
- cover plate
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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Classifications
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- Y02E60/12—
Landscapes
- Gas Exhaust Devices For Batteries (AREA)
Abstract
The utility model belongs to a safe and square rechargeable lithium ion battery which composed of an external shell made from steel, an electrode plate, an insulating sheet, a cover plate, a positive plate, etc., wherein, the center part of the broad side of the external shell is provided with an X-shaped groove safety valve. The utility model has the advantages of simple structure, quick reaction of explosion resistance, high sensitivity and high safety.
Description
The utility model belongs to the improvement of the square chargeable lithium ion battery of a kind of safety.
Square chargeable lithium ion battery, in light weight because its terminal voltage height, physical efficiency obtains application widely than advantage such as big in mobile communication and notebook computer.
Traditional square chargeable lithium battery does not have safety valve, and its charging and discharge all depend on external circuit protection, if external circuit is malfunctioning, or inside battery is short-circuited etc., can cause battery explosion, causes personal injury.Square chargeable lithium battery after the improvement is arranged on cell cover plate or shell lower bottom part with the off-load safety valve, promptly with the groove of mechanical means at cell cover plate or delineation of shell lower bottom part or compacting certain depth, because of the concave part wall body thinner, so when battery takes place unusual, when internal pressure raises, the groove unlatching of at first breaking, discharge cell internal pressure, avoid battery explosion, but since this groove safety valve all be arranged on cell cover plate or outer casing bottom usually, promptly battery on, the lower surface, when battery unusual, when interior voltage rise was high, both ends of the surface were not easy deformation position, so the blastproof sensitivity of square chargeable lithium ion battery and the reliability of this structure are relatively poor.
The purpose of this utility model provides a kind of simple in structure, and is explosion-proof highly sensitive, the square chargeable lithium ion battery that reaction speed is fast, safe and reliable.
The utility model comprises the battery lead plate 5 in cover plate 4 ' on shell 4, the shell 4, the positive plate on the cover plate 4 ' 1 and the shell 4, and its principal character is that the wide face of shell 4 is provided with groove safety valve 6.The shape of this groove safety valve 6 is " * " shape, is positioned at wide central part of shell 4.
Because wide face of the present utility model is provided with the groove safety valve, unusual when the battery generation, wide face was the most yielding when interior pressure increased, and a particularly wide central part is out of shape the fastest, maximum.Groove safety valve place is thinner because of wall body, the easiest breaking behind the pressurized, so the utility model is simple in structure, explosion-proof reaction speed is fast, highly sensitive, and is safe and reliable.
Accompanying drawing 1 is the utility model structural representation.
Accompanying drawing 2 is break end view after the release of groove safety valve of the present utility model.
Further describe the utility model below in conjunction with drawings and Examples.
Referring to accompanying drawing 1, shell 4 of the present utility model is stretched by stainless steel materials and makes.Cover plate 4 ' is sealed in electrode slice 5 in the shell 4, and positive plate 1 is fixed on the central part of cover plate 4 ' by rivet 3, and and cover plate 4 ' between be provided with insulating trip 2.Groove safety valve 6 is positioned at wide central part of shell 4, is " * " shape, can carve compacting and do.
Claims (2)
1, the square chargeable lithium ion battery of a kind of safety comprises the cover plate 4 ' on the shell 4, the battery lead plate 5 in positive plate 1 on the cover plate 4 ' and the shell 4, and the wide face that it is characterized by shell 4 is provided with groove safety valve 6.
2, by the square chargeable lithium ion battery of the described a kind of safety of claim 1, the shape that it is characterized by said groove safety valve 6 is " * " shape, is positioned at wide central part of shell 4.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 99203712 CN2373901Y (en) | 1999-02-12 | 1999-02-12 | Safety square-shaped rechargeable lithium battery |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 99203712 CN2373901Y (en) | 1999-02-12 | 1999-02-12 | Safety square-shaped rechargeable lithium battery |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2373901Y true CN2373901Y (en) | 2000-04-12 |
Family
ID=33998735
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 99203712 Expired - Fee Related CN2373901Y (en) | 1999-02-12 | 1999-02-12 | Safety square-shaped rechargeable lithium battery |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2373901Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2006053493A1 (en) * | 2004-11-16 | 2006-05-26 | Byd Company Limited | A type of explosion preventive battery |
| CN101904030A (en) * | 2007-12-14 | 2010-12-01 | 株式会社Lg化学 | Secondary cell with sealing of novel structure |
-
1999
- 1999-02-12 CN CN 99203712 patent/CN2373901Y/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2006053493A1 (en) * | 2004-11-16 | 2006-05-26 | Byd Company Limited | A type of explosion preventive battery |
| CN101904030A (en) * | 2007-12-14 | 2010-12-01 | 株式会社Lg化学 | Secondary cell with sealing of novel structure |
| CN101904030B (en) * | 2007-12-14 | 2013-06-19 | 株式会社Lg化学 | Secondary battery having sealing portion of novel structure |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |