CN201478362U - Combined cover cap anti-explosion device of lithium ion battery - Google Patents
Combined cover cap anti-explosion device of lithium ion battery Download PDFInfo
- Publication number
- CN201478362U CN201478362U CN2009201356056U CN200920135605U CN201478362U CN 201478362 U CN201478362 U CN 201478362U CN 2009201356056 U CN2009201356056 U CN 2009201356056U CN 200920135605 U CN200920135605 U CN 200920135605U CN 201478362 U CN201478362 U CN 201478362U
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- CN
- China
- Prior art keywords
- explosion
- cup type
- cup
- brace
- pressure disc
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- 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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- Gas Exhaust Devices For Batteries (AREA)
Abstract
The utility model discloses a combined cover cap anti-explosion device of lithium ion battery, which comprises a cup-shaped anti-explosion membrane, an upper connecting plate and an inner connecting plate, and is characterized in that the edge parts of the inner connecting plate and the upper connecting plate are closely bound together, a closely binding section thereof is coated by a spacing ring in a semi-cycle shape, the spacing ring and the inner connecting plate are coated into a semi-cycle shape by the cup-shaped anti-explosion membrane, the cup-shaped anti-explosion membrane and a pressure plate on the lower portion of the cup-shaped anti-explosion membrane are partly spaced and insulated through an air cushion ring, and the cup-shaped anti-explosion membrane and the pressure plate contact just through two welding points. A sealing ring and the spacing ring between the cup-shaped anti-explosion membrane, the upper connecting plate and the lower connecting plate are separately arranged, notch nicks with a certain depth are respectively arranged on the circumferential direction of the anti-explosion membrane, the welding points use a raised head structure, once the welding points are damaged, the air pressure in the inner portion of the battery continuously increases to a bearing limit of a safe valve, high pressure gas can be conveniently exhausted, and guaranteeing the safety of the battery after releasing.
Description
Technical field
The utility model relates to a kind of lithium ion battery, especially relates to a kind of combination cover cap explosion-protection equipment of column lithium ion battery.
Background technology
Secondary lithium battery is widely used in the industrial production, because the safety in utilization requirement of battery, on battery body, all be provided with anti-explosion safety device, when battery is short-circuited, overcharge or other reasons, the inside battery energy sharply discharges, air pressure inside will increase, solder joint comes off when air pressure reaches certain pressure, and charging current can not conducting, when air pressure continue to raise reach explosion-protection equipment bear the limit time, the anti-explosion safety opening of valves, discharge gases at high pressure, cell internal pressure is reduced, thereby reaches the purpose that prevents battery explosion.Known in the market secondary lithium battery, especially the combination cover cap of column lithium ion battery, the sealing ring of its brace and rupture pressure disc and cage ring are to adopt the integral type design, be that sealing ring and cage ring are connected as a single entity, and the solder joint between rupture pressure disc and the brace adopts general bump design, the defective of this structure is that the solder joint when causing the battery body sealing easily destroys, the safety valve pressure scope is inaccurate and battery performance is unstable, under normal circumstances solder joint is in a single day destroyed, entire cell has just been scrapped, also caused the waste of the energy, described defective value must improve.
The utility model content
The purpose of this utility model is at the deficiencies in the prior art, a kind of combination cover cap explosion-protection equipment of lithium ion battery is provided, the structure that the utility model adopts, can overcome the defective of prior art, make the solder joint of battery combination block explosion-protection equipment be not easy destroyed, the safety valve pressure scope is more accurate, and when the in a single day destroyed back of solder joint inside battery air pressure continue to increase to safety valve bear the limit time, can discharge gases at high pressure easily, guarantee battery security after the pressure release, thereby make battery performance stable, save the energy.
The technical solution of the utility model is such: the combination cover cap explosion-protection equipment that a kind of lithium ion battery is provided, comprise a cup type rupture pressure disc and go up brace and interior brace, it is characterized in that, the marginal portion of interior brace and last brace fits tightly is in the same place, and the section part that it fits tightly is the coating of half cycle shape by a cage ring, and cup type rupture pressure disc is the coating of half cycle shape with cage ring and interior brace, make cage ring, realize fitting tightly between interior brace and the last brace, cup type rupture pressure disc and between the pressure plate of its underpart, carry out the part isolated insulation by an airfilled ring, cup type rupture pressure disc only contacts by two solder joints between the two with pressure plate, and described solder joint is as cup type rupture pressure disc and pressure plate current lead-through place between the two.
The utility model according to said structure, its feature also is, the ring circumferencial direction of the cup bottom of described cup type rupture pressure disc is provided with the explosion-proof recess indentation of a circle certain depth, described explosion-proof recess indentation is as the safety valve of described cup type rupture pressure disc, when the destroyed back of solder joint inside battery air pressure continue to increase to safety valve bear the limit time, fracture can appear in explosion-proof recess indentation place, thereby discharges gases at high pressure, guarantees battery security after the pressure release.
According to the utility model of said structure, its feature also is, its bottom of described cup type rupture pressure disc and pressure plate between two solder joint contact positions be the spherical nose shape.
The utility model according to said structure; a cage ring that is provided with between the outside of described cup type rupture pressure disc inboard and last brace and interior brace; can guarantee to enter a glass type rupture pressure disc again after the electric current that imports from last brace is by interior brace, when interior brace adopts temperature-sensitive element, can increase the temperature protection function of explosion-proof covering board.The structure of bag that adopts cup type rupture pressure disc and last brace and interior brace has back also improved the mechanical strength of explosion-proof covering board, has guaranteed the sealing property of lithium ion battery.
Its beneficial effect of the utility model is; it make rupture pressure disc and last brace and and following brace between sealing ring and cage ring branch be arranged; and explosion-proof zona circumferencial direction is respectively arranged with the recess indentation of certain depth; the solder joint place adopts the plush copper structure; can overcome the defective of prior art like this; make the solder joint of battery combination block explosion-protection equipment be not easy destroyed; solder joint breaks (first pipe protection) and rupture pressure disc safety valve unlatching (second pipe protection) range of pressure values is more accurate; and when the in a single day destroyed back of solder joint inside battery air pressure continue to increase to safety valve bear the limit time; can discharge gases at high pressure easily; guarantee battery security after the pressure release; thereby make battery performance stable; lasting in the following life-span of prerequisite that guarantees safe handling, saved the energy.
Description of drawings
Below in conjunction with the drawings and the specific embodiments the utility model is described in detail.
Shown in Figure 1 is the utility model profile;
Shown in Figure 2 is A part amplification rearview among Fig. 1;
Shown in Figure 3 is B part amplification rearview among Fig. 1;
Shown in Figure 4 is the utility model rupture pressure disc profile.
In the drawings, 1, go up brace; 2, cage ring; 3, interior brace; 4, cup type rupture pressure disc; 5, airfilled ring; 6, pressure plate; 7, solder joint; 8, explosion-proof recess indentation; 9, plush copper.
Embodiment
As Fig. 1,2, shown in 3, the combination cover cap explosion-protection equipment of the lithium ion battery of utility model, comprise a cup type rupture pressure disc 4 and go up brace 1 and interior brace 3, it is characterized in that, the marginal portion of interior brace 3 and last brace 1 fits tightly is in the same place, and the section part that it fits tightly is the coating of half cycle shape by a cage ring 2, and cup type rupture pressure disc 4 is the coating of half cycle shape with cage ring 2 and interior brace 3, make cage ring 2, realize fitting tightly between interior brace 3 and the last brace 1, cup type rupture pressure disc 4 and between the pressure plate 6 of its underpart, carry out the part isolated insulation by an airfilled ring 5, cup type rupture pressure disc 4 only contacts by two solder joints 7 between the two with pressure plate 6, and described solder joint 7 is as cup type rupture pressure disc 4 and pressure plate 6 current lead-through place between the two.
Shown in Fig. 1,4, the ring circumferencial direction of the cup bottom of described cup type rupture pressure disc 4 is provided with the explosion-proof recess indentation 8 of a circle certain depth, described explosion-proof recess indentation 8 is as the safety valve of described cup type rupture pressure disc 4, when the destroyed back of solder joint 7 inside battery air pressure continue to increase to safety valve bear the limit time, fracture can appear in explosion-proof recess indentation 8 places, thereby the discharge gases at high pressure guarantee battery security after the pressure release.
Shown in Fig. 3,4, described cup type rupture pressure disc 4 its bottoms and pressure plate 6 between two solder joint 7 contact positions be spherical nose 9 shapes.
According to above-mentioned structure; a cage ring 2 that is provided with between the outside of described cup type rupture pressure disc 4 inboard and last braces 1 and interior brace 3; can guarantee to enter a glass type rupture pressure disc 4 again after the electric current that imports from last brace 1 is by interior brace 3, when interior brace 3 adopts temperature-sensitive elements, can increase the temperature protection function of explosion-proof covering board.The structure of bag that adopts cup type rupture pressure disc 4 and last brace 1 and interior brace 3 has back also improved the mechanical strength of explosion-proof covering board, has guaranteed the sealing property of lithium ion battery.
Claims (3)
1. the combination cover cap explosion-protection equipment of a lithium ion battery, comprise a cup type rupture pressure disc (4) and go up brace (1) and interior brace (3), it is characterized in that, the marginal portion of interior brace (3) and last brace (1) fits tightly together, and the section part that it fits tightly is the coating of half cycle shape by a cage ring (2), and cup type rupture pressure disc (4) is the coating of half cycle shape with cage ring (2) and interior brace (3), make cage ring (2), realize fitting tightly between interior brace (3) and the last brace (1), cup type rupture pressure disc (4) and be positioned between the pressure plate (6) of its underpart and carry out the part isolated insulation by an airfilled ring (5), cup type rupture pressure disc (4) only contacts by two solder joints (7) between the two with pressure plate (6), and described solder joint (7) is as cup type rupture pressure disc (4) and pressure plate (6) current lead-through place between the two.
2. the combination cover cap explosion-protection equipment of lithium ion battery according to claim 1, its feature also is, the ring circumferencial direction of the cup bottom of described cup type rupture pressure disc (4) is provided with the explosion-proof recess indentation (8) of a circle certain depth, and described explosion-proof recess indentation (8) is as the safety valve of described cup type rupture pressure disc (4).
3. the combination cover cap explosion-protection equipment of lithium ion battery according to claim 1, its feature also be, its bottom of described cup type rupture pressure disc (4) and pressure plate (6) between two solder joints (7) contact position be spherical nose (9) shape.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009201356056U CN201478362U (en) | 2009-03-11 | 2009-03-11 | Combined cover cap anti-explosion device of lithium ion battery |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009201356056U CN201478362U (en) | 2009-03-11 | 2009-03-11 | Combined cover cap anti-explosion device of lithium ion battery |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201478362U true CN201478362U (en) | 2010-05-19 |
Family
ID=42414622
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009201356056U Expired - Fee Related CN201478362U (en) | 2009-03-11 | 2009-03-11 | Combined cover cap anti-explosion device of lithium ion battery |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201478362U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102097604A (en) * | 2011-01-18 | 2011-06-15 | 杨福如 | Lithium ion battery cover cap |
| CN104716281A (en) * | 2015-04-09 | 2015-06-17 | 常州市武进中瑞电子有限公司 | Thin type anti-explosion cylinder lithium battery combined cap |
| CN104768348A (en) * | 2015-03-20 | 2015-07-08 | 上海惠亚电子有限公司 | Method for preventing cabinet arc blast damage |
-
2009
- 2009-03-11 CN CN2009201356056U patent/CN201478362U/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102097604A (en) * | 2011-01-18 | 2011-06-15 | 杨福如 | Lithium ion battery cover cap |
| CN104768348A (en) * | 2015-03-20 | 2015-07-08 | 上海惠亚电子有限公司 | Method for preventing cabinet arc blast damage |
| CN104768348B (en) * | 2015-03-20 | 2017-08-01 | 上海惠亚电子有限公司 | Prevent the method for rack electric arc blast injury |
| CN104716281A (en) * | 2015-04-09 | 2015-06-17 | 常州市武进中瑞电子有限公司 | Thin type anti-explosion cylinder lithium battery combined cap |
| CN104716281B (en) * | 2015-04-09 | 2018-01-02 | 常州市武进中瑞电子有限公司 | Slim cylindrical lithium battery anti-explosion |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20100519 Termination date: 20170311 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |