CN208655711U - A kind of battery cap - Google Patents
A kind of battery cap Download PDFInfo
- Publication number
- CN208655711U CN208655711U CN201821031279.XU CN201821031279U CN208655711U CN 208655711 U CN208655711 U CN 208655711U CN 201821031279 U CN201821031279 U CN 201821031279U CN 208655711 U CN208655711 U CN 208655711U
- Authority
- CN
- China
- Prior art keywords
- top cover
- rupture disk
- battery cap
- explosion
- orifice 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.)
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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 kind of battery cap, including sealing ring, top cover is successively packaged in sealing ring, explosion rupture disk and orifice plate, the middle of top cover is provided with the male part protruded to the side far from explosion rupture disk, and the edge on top cover positioned at male part is provided with multiple stomatas, explosion rupture disk and top cover are welded to connect, air hole is provided on orifice plate, explosion rupture disk is step-like structure, it includes the base portion being sequentially connected, interior protuberance and interconnecting piece, interior protuberance is protruded to the side far from top cover, and protrude from base surface, and the first explosion-proof indentation is provided in interior protuberance, interconnecting piece is protruded to the side far from top cover, and protrude from the surface of interior protuberance, washer is provided between the edge and explosion rupture disk of orifice plate, and the position of the middle corresponding connection parts of orifice plate is provided with weld part, weld part and interconnecting piece are welded to connect, it is located at the side of weld part on orifice plate Edge is provided with the second explosion-proof indentation.A kind of above-mentioned battery cap has the characteristics that small in size, intensity is big, highly-safe.
Description
Technical field
The utility model relates to field of batteries more particularly to a kind of battery caps.
Background technique
Lithium ion battery is a kind of rechargeable battery, it relies primarily on lithium ion, and movement carrys out work between a positive electrode and a negative electrode.
In charge and discharge process, Li+ insertion and deintercalation back and forth between two electrodes: when rechargable battery, Li+ is from positive deintercalation, by electricity
It solves matter and is embedded in cathode, cathode is in lithium-rich state；It is then opposite when electric discharge.Since lithium ion battery is with small in size, light-weight, electric
The features such as strong, environmentally protective is measured, is widely used in industrial production and daily life.
Battery cap is the important component of lithium ion battery, and existing battery cap makes its tool by the way that explosion rupture disk is arranged
There is explosion prevention function, however, existing explosion rupture disk is mostly bowl shaped structure, which increase the thickness of battery cap, the entirety of battery cap
Thickness reaches 3.85mm, virtually reduces the aperture of battery case, secondly, leading between the orifice plate and explosion rupture disk of existing battery cap
It crosses multiple solder joints to be connected, not only reduces the intensity of entire nut cap, and when internal pressure increases, response speed is slower, drops significantly
Low safety is badly in need of solving as a result,.
Utility model content
The purpose of this utility model is that in view of the above-mentioned problems, a kind of battery cap is provided, to solve existing battery cap
The problem of volume is big, intensity is low, low-response, poor safety performance.
The purpose of this utility model is to be achieved through the following technical solutions:
A kind of battery cap, including sealing ring are successively packaged with top cover, explosion rupture disk and orifice plate in the sealing ring, described
The middle of top cover is provided with the male part protruded to the side far from explosion rupture disk, and the edge on top cover positioned at male part is provided with
Multiple stomatas, the explosion rupture disk and top cover are welded to connect, and air hole is provided on the orifice plate, and the explosion rupture disk is step-like knot
Structure comprising base portion, interior protuberance and the interconnecting piece being sequentially connected, the interior protuberance is protruded to the side far from top cover, and is protruded
The first explosion-proof indentation is provided in base surface, and in interior protuberance, the interconnecting piece is protruded to the side far from top cover, and is protruded
In the surface of interior protuberance, it is provided with the washer for the effect of being dielectrically separated between the edge and explosion rupture disk of the orifice plate, and orifice plate
The position of middle corresponding connection parts is provided with weld part, and the weld part and interconnecting piece are welded to connect, are located on the orifice plate
The edge of weld part is provided with the second explosion-proof indentation.
As a kind of preferred embodiment of the utility model, the explosion rupture disk further includes having flange, and the flange is set to base
The edge in portion, and coat top cover.
As a kind of preferred embodiment of the utility model, the flange, base portion, interior protuberance, interconnecting piece are structure as a whole.
As a kind of preferred embodiment of the utility model, the top cover is connected by multiple tracks arc bonding wire and explosion rupture disk welding
It connects.
As a kind of preferred embodiment of the utility model, the arc bonding wire is 3, along the circumferential direction uniformly distributed.
As a kind of preferred embodiment of the utility model, the radian of the arc bonding wire is 40 °.
As a kind of preferred embodiment of the utility model, the weld part passes through round bonding wire and interconnecting piece is welded to connect.
As a kind of preferred embodiment of the utility model, the weld part is structure as a whole with orifice plate.
It is located above explosion rupture disk as a kind of preferred embodiment of the utility model, on the inner wall of the sealing ring and is provided with
One circle fin.
The beneficial effects of the utility model are, a kind of explosion rupture disk of battery cap uses step-like structure, compared to
The explosion rupture disk of traditional bowl shaped structure, can greatly reduce the thickness of battery cap, and thickness is reduced to by original 3.85mm
3.45mm, and then can save the space of battery case improves battery capacity, secondly, passing through the first explosion-proof indentation of setting, second explosion-proof
Indentation, and then when inner pressure of battery increases, it can timely respond to, play explosion-proof, so that safety is substantially increased, in addition,
Top cover is welded to connect by multiple tracks arc bonding wire and explosion rupture disk, and weld part passes through round bonding wire and interconnecting piece is welded to connect, thus
The intensity of entire battery cap is substantially increased, structure is simple, is easily achieved.
Detailed description of the invention
Fig. 1 is a kind of elevational cross-sectional view of battery cap；
Fig. 2 is a kind of enlarged drawing of the battery cap shown in FIG. 1 at A；
Fig. 3 is a kind of top view of battery cap；
Fig. 4 is a kind of bottom view of battery cap.
Specific embodiment
Further illustrate the technical solution of the utility model below with reference to the accompanying drawings and specific embodiments.It can manage
Solution, embodiment described herein are used only for explaining the utility model, rather than the restriction to the utility model.
Please refer to figs. 1 to 4, Fig. 1 is a kind of structural schematic diagram of battery cap；Fig. 2 is a kind of electricity shown in FIG. 1
Enlarged drawing of the pond nut cap at A；Fig. 3 is a kind of top view of battery cap；Fig. 4 is a kind of bottom view of battery cap.
In this present embodiment, a kind of battery cap, including sealing ring 1 are successively packaged with top cover 2, anti-in the sealing ring 1
Quick-fried 3 and orifice plate 4, the top that explosion rupture disk 3 is located on the inner wall of the sealing ring 1 are provided with a circle fin 11, the top cover 2
Middle is provided with male part 21 protruding upward, and the edge on top cover 2 positioned at male part 21 is provided with 3 stomatas 22, described
Explosion rupture disk 3 is welded to connect by 3 arc bonding wires 23 with top cover 2, and the 3 arc bonding wires 23 are along the circumferential direction uniformly distributed, arc
The radian of shape bonding wire 23 is 40 °, and 5 air holes 41 are provided on the orifice plate 4, and the explosion rupture disk 3 is step-like structure comprising
Flange 33, base portion 31, interior protuberance 32 and the interconnecting piece 35 being sequentially connected, the flange 33, base portion 31, interior protuberance 32, interconnecting piece
35 are structure as a whole, and the flange 33 is set to the edge of base portion 31, and coats top cover 2, and the interior protuberance 32 is convex to downside
Out, and 31 surface of base portion is protruded from, and is provided with the first explosion-proof indentation 34 in interior protuberance 32, the interconnecting piece 35 is convex to downside
Out, and the surface of interior protuberance 32 is protruded from, has been provided with the effect of being dielectrically separated between the edge and explosion rupture disk 3 of the orifice plate 4
Washer 5, and the position of the middle corresponding connection parts 35 of orifice plate 4 is provided with weld part 42, the weld part 42 is one with orifice plate 4
Body structure, the weld part 42 pass through round bonding wire 44 and are welded to connect with interconnecting piece 35, and weld part 42 is located on the orifice plate 4
Edge is provided with the second explosion-proof indentation 43.
A kind of explosion rupture disk of above-mentioned battery cap uses step-like structure, compared to the explosion rupture disk of traditional bowl shaped structure,
The thickness of battery cap can be greatly reduced, thickness is reduced to 3.45mm by original 3.85mm, and then can save battery case
Battery capacity is improved in space, secondly, by setting the first explosion-proof indentation 34, the second explosion-proof indentation 43, and then in inner pressure of battery liter
Gao Shi can timely respond to, play explosion-proof, so that safety is substantially increased, in addition, top cover 2 passes through 3 arc bonding wires 23
It is welded to connect with explosion rupture disk 3, weld part 42 passes through round bonding wire 44 and is welded to connect with interconnecting piece 35, to substantially increase entire
The intensity of battery cap.A kind of above-mentioned battery cap has the characteristics that small in size, intensity is big, highly-safe.
Above embodiments only elaborate the basic principles and features of the present invention, and the utility model is not by above-mentioned implementation
Example limitation, on the premise of not departing from the spirit and scope of the utility model, the present invention has various changes and changes, these
Changes and modifications are fallen within the scope of the claimed invention.The utility model requires protection scope is by appended right
Claim defines.
Claims (9)
1. a kind of battery cap, including sealing ring, top cover, explosion rupture disk and orifice plate, the top are successively packaged in the sealing ring
The middle of lid be provided with to far from explosion rupture disk side protrude male part, and on top cover positioned at male part edge be provided with it is more
A stomata, the explosion rupture disk and top cover are welded to connect, and are provided with air hole on the orifice plate, it is characterised in that: the explosion rupture disk is
Step-like structure comprising base portion, interior protuberance and the interconnecting piece being sequentially connected, the interior protuberance are convex to the side far from top cover
Out, and base surface is protruded from, and is provided with the first explosion-proof indentation in interior protuberance, the interconnecting piece is convex to the side far from top cover
Out, and the surface of interior protuberance is protruded from, the washer for the effect of being dielectrically separated from has been provided between the edge and explosion rupture disk of the orifice plate,
And the position of the middle corresponding connection parts of orifice plate is provided with weld part, the weld part and interconnecting piece are welded to connect, the hole
Edge on plate positioned at weld part is provided with the second explosion-proof indentation.
2. a kind of battery cap according to claim 1, it is characterised in that: the explosion rupture disk further includes having flange, described
Flange is set to the edge of base portion, and coats top cover.
3. a kind of battery cap according to claim 2, it is characterised in that: the flange, base portion, interior protuberance, interconnecting piece
It is structure as a whole.
4. a kind of battery cap according to claim 1, it is characterised in that: the top cover is by multiple tracks arc bonding wire and prevents
Quick-fried welded connecting.
5. a kind of battery cap according to claim 4, it is characterised in that: the arc bonding wire is 3, circumferentially side
To uniformly.
6. a kind of battery cap according to claim 5, it is characterised in that: the radian of the arc bonding wire is 40 °.
7. a kind of battery cap according to claim 1, it is characterised in that: the weld part pass through round bonding wire with connect
Portion is welded to connect.
8. a kind of battery cap according to claim 7, it is characterised in that: the weld part is structure as a whole with orifice plate.
9. a kind of battery cap according to claim 1, it is characterised in that: be located at explosion rupture disk on the inner wall of the sealing ring
Top be provided with a circle fin.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821031279.XU CN208655711U (en) | 2018-06-29 | 2018-06-29 | A kind of battery cap |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821031279.XU CN208655711U (en) | 2018-06-29 | 2018-06-29 | A kind of battery cap |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208655711U true CN208655711U (en) | 2019-03-26 |
Family
ID=65782353
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821031279.XU Active CN208655711U (en) | 2018-06-29 | 2018-06-29 | A kind of battery cap |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208655711U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108598300A (en) * | 2018-06-29 | 2018-09-28 | 无锡金杨丸伊电子有限公司 | a kind of battery cap |
| CN114024087A (en) * | 2021-09-26 | 2022-02-08 | 常州瑞德丰精密技术有限公司 | Rupture disk for double-open type blasting |
-
2018
- 2018-06-29 CN CN201821031279.XU patent/CN208655711U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108598300A (en) * | 2018-06-29 | 2018-09-28 | 无锡金杨丸伊电子有限公司 | a kind of battery cap |
| CN114024087A (en) * | 2021-09-26 | 2022-02-08 | 常州瑞德丰精密技术有限公司 | Rupture disk for double-open type blasting |
| CN114024087B (en) * | 2021-09-26 | 2022-10-18 | 常州瑞德丰精密技术有限公司 | Rupture disk for double-open type blasting |
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| GR01 | Patent grant |