CN202395055U - Lithium ion battery with explosion-proof device - Google Patents
Lithium ion battery with explosion-proof device Download PDFInfo
- Publication number
- CN202395055U CN202395055U CN2011204294294U CN201120429429U CN202395055U CN 202395055 U CN202395055 U CN 202395055U CN 2011204294294 U CN2011204294294 U CN 2011204294294U CN 201120429429 U CN201120429429 U CN 201120429429U CN 202395055 U CN202395055 U CN 202395055U
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- China
- Prior art keywords
- battery
- explosion
- lithium ion
- ion battery
- proof
- 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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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/10—Energy storage using batteries
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- Secondary Cells (AREA)
- Sealing Battery Cases Or Jackets (AREA)
- Gas Exhaust Devices For Batteries (AREA)
Abstract
The utility model discloses a lithium ion battery with an explosion-proof device. The lithium ion battery with the explosion-proof device comprises a battery pole piece coil, a battery shell and a battery aluminum cover, wherein an elliptic explosion-proof block is arranged on the battery aluminum cover; the edges of the upper surface and the lower surface of the explosion-proof device are respectively provided with annular slots corresponding to two positions sunken in the battery aluminum cover; the middle part of each annular slot is provided with arched body protruded upwards; and the explosion-proof block is integrated with the battery aluminum cover. According to the lithium ion battery with the explosion-proof device, the explosion-proof device is provided, so the arch shape of the middle part of the explosion-proof block is gradually protruded or cracks are generated to leak voltage so as to exert an explosion-proof function when the pressure of the interior of the battery is overlarge.
Description
Technical field
The utility model relates to a kind of lithium ion battery, particularly relates to a kind of lithium ion battery that has explosion-protection equipment.
Background technology
Lithium is that battery is divided into lithium battery and lithium ion battery.What mobile phone and notebook computer used at present all is lithium ion battery, and people's custom is called lithium battery usually, and the lithium ion battery energy density is big, and average output voltage is high.Self discharge is little, and good battery (can recover) below 2% in every month; Do not have memory effect, operating temperature range is wide to be-20 ℃～60 ℃, but the superior fast charging and discharging of cycle performance, charge efficiency are up to 100%; And power output is big; Long service life does not contain poisonous harmful substance, is called as green battery.But safety problem is a very important problem of lithium ion battery, though present most of lithium ion battery all has the protective circuit of anti-short circuit, also has explosion-proof line.But under a lot of situation, this circuit not necessarily can work under various situation, and explosion-proof line ability role is also very limited.
Summary of the invention
The purpose of the utility model just provides a kind of lithium ion battery that has explosion-protection equipment, adopts mechanical structure explosion-proof, uses safer.
For achieving the above object, the utility model adopts following technical scheme:
A kind of lithium ion battery that has explosion-protection equipment; Comprise: battery pole piece volume, battery case, battery aluminium lid; Described battery aluminium lid is provided with oval-shaped anti-riot; The edge of described anti-riot upper and lower surface is respectively equipped with to the corresponding cannelure in two positions of the inner recess of battery aluminium lid, and the middle part of its cannelure is provided with ogive protruding upward, and anti-riot is connected as a single entity with the battery aluminium lid.
Thickness between the cannelure of described two positions correspondence is between 0.09-0.12mm, and the thickness of ogive is between the 0.13-0.2 millimeter.
The top of described ogive is plane or arc surface.
The beneficial effect of the utility model: owing to be provided with explosion-proof, excessive when cell internal pressure, the arch at anti-riot middle part can be protruded gradually, or produces the crack and explosion-proof is played in pressure release.
Description of drawings
Fig. 1 is the front view of the battery cover of one of them embodiment of the utility model.
Fig. 2 be Fig. 1 A-A to cutaway view.
Fig. 3 is the rearview of Fig. 1.
Fig. 4 be Fig. 1 B-B to cutaway view.
Fig. 5 is the local enlarged diagram at the C place of Fig. 2.
Fig. 6 is the local enlarged diagram at the D place of Fig. 4.
Embodiment
Extremely shown in Figure 6 like Fig. 1; The utility model comprises: battery pole piece volume, battery case, battery aluminium lid 2, present embodiment are the battery cover of mobile phone, and its lid is aluminium; 0.8 millimeter of thickness; Described battery aluminium lid is provided with oval-shaped anti-riot 1, and anti-riot 1 is to form through die stamping, therefore is connected as a single entity.The edge of described anti-riot upper and lower surface forms the corresponding cannelure 11,12 in two positions to the inner recess of battery aluminium lid respectively; Thickness between the cannelure of two position correspondences is between 0.09-0.12mm; Because the position is corresponding; Thickness between two cannelure bottoms is reduced, so surpass the scope of setting, the pressure release of will breaking at the cannelure place when cell internal pressure.The middle part of cannelure is provided with ogive protruding upward 13, and the bottom of its ogive another side is groove 14 upwards, and the thickness of ogive is between the 0.13-0.2 millimeter, and the thickness of ogive can be consistent, and it is thin middle thick gradually that the edge also can be set.Ogive is set can make battery ogive when the pressure excess load protrude to the lateral direction of battery; The degree of bearing that has exceeded ogive when pressure; Just can break in the cannelure place, because the thickness of cannelure and ogive 13 is significantly less than battery case and battery cover, when inner pressure of battery exceeds certain scope; Explosion-proof pressure release is so can avoid inner pressure of battery excessive and explode.
Claims (3)
1. lithium ion battery that has explosion-protection equipment; Comprise: battery pole piece volume, battery case, battery aluminium lid; It is characterized in that: described battery aluminium lid is provided with oval-shaped anti-riot; The edge of described anti-riot upper and lower surface is respectively equipped with to the corresponding cannelure in two positions of the inner recess of battery aluminium lid, and the middle part of its cannelure is provided with ogive protruding upward, and anti-riot is connected as a single entity with the battery aluminium lid.
2. a kind of lithium ion battery that has explosion-protection equipment according to claim 1 is characterized in that: the thickness between the cannelure of described two positions correspondence is between 0.09-0.12mm, and the thickness of ogive is between the 0.13-0.2 millimeter.
3. a kind of lithium ion battery that has explosion-protection equipment according to claim 1 is characterized in that: the top of described ogive is plane or arc surface.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011204294294U CN202395055U (en) | 2011-11-03 | 2011-11-03 | Lithium ion battery with explosion-proof device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011204294294U CN202395055U (en) | 2011-11-03 | 2011-11-03 | Lithium ion battery with explosion-proof device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202395055U true CN202395055U (en) | 2012-08-22 |
Family
ID=46669959
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011204294294U Expired - Fee Related CN202395055U (en) | 2011-11-03 | 2011-11-03 | Lithium ion battery with explosion-proof device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202395055U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103094510A (en) * | 2011-11-03 | 2013-05-08 | 中山天贸电池有限公司 | Lithium ion battery with explosion-proof device and processing method thereof |
| WO2023220886A1 (en) * | 2022-05-16 | 2023-11-23 | 宁德时代新能源科技股份有限公司 | End cover, battery cell, battery, and electric device |
| WO2023220882A1 (en) * | 2022-05-16 | 2023-11-23 | 宁德时代新能源科技股份有限公司 | End cover, battery cell, battery, and power consuming apparatus |
| WO2024082096A1 (en) * | 2022-10-17 | 2024-04-25 | 宁德时代新能源科技股份有限公司 | Battery cell, battery, energy storage apparatus, and electrical apparatus |
-
2011
- 2011-11-03 CN CN2011204294294U patent/CN202395055U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103094510A (en) * | 2011-11-03 | 2013-05-08 | 中山天贸电池有限公司 | Lithium ion battery with explosion-proof device and processing method thereof |
| WO2023220886A1 (en) * | 2022-05-16 | 2023-11-23 | 宁德时代新能源科技股份有限公司 | End cover, battery cell, battery, and electric device |
| WO2023220882A1 (en) * | 2022-05-16 | 2023-11-23 | 宁德时代新能源科技股份有限公司 | End cover, battery cell, battery, and power consuming apparatus |
| WO2024082096A1 (en) * | 2022-10-17 | 2024-04-25 | 宁德时代新能源科技股份有限公司 | Battery cell, battery, energy storage apparatus, and electrical apparatus |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20120822 Termination date: 20121103 |