CN208315617U - A kind of battery cap with protection structure - Google Patents
A kind of battery cap with protection structure Download PDFInfo
- Publication number
- CN208315617U CN208315617U CN201820392895.1U CN201820392895U CN208315617U CN 208315617 U CN208315617 U CN 208315617U CN 201820392895 U CN201820392895 U CN 201820392895U CN 208315617 U CN208315617 U CN 208315617U
- Authority
- CN
- China
- Prior art keywords
- tab
- venthole
- piece
- pole
- protection structure
- 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.)
- Active
Links
Classifications
-
- 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
Landscapes
- Gas Exhaust Devices For Batteries (AREA)
Abstract
The utility model discloses a kind of battery caps with protection structure; it include: cover board, the pole being arranged on the cover board and the tab being arranged in below pole; the first venthole is provided on the pole; multiple second ventholes are provided on the tab; be additionally provided between the pole and the tab overturning chamber and break piece, the piece of breaking carries out the first venthole with second venthole closing is isolated, the piece of breaking is fixedly connected with tab；Fracture belt is provided on the tab.The utility model breaks piece and the first venthole by being arranged on pole; piece is broken to connect with tab; fracture belt is set on tab; when cell internal pressure increases, piece overturning is broken in pressure promotion, is broken from fracture belt after tab stress; to keep inside battery breaking; and by the first venthole pressure release, prevents from increasing pull-off force due to overturning intracavitary pressure and increasing, be effectively protected battery and user of service.
Description
Technical field
The utility model relates to field of battery production more particularly to a kind of battery caps with protection structure.
Background technique
It is increasingly developed with electronic product, battery with more and more extensive because the miniaturization of electronic product with just
Taking needs a kind of stable and convenient power supply.And battery is just simply easy to carry because of its structure, the electrically operated letter of charge and discharge
Just, it is not influenced by outside climatic and temperature, stable and reliable for performance, the various aspects in the social life of modernization play
Very big effect.Battery cap includes cover plate and pole, and the quality of top cover directly affects the performance of battery.
In battery cap, pole plays the role of transmission electric power, does not have protection mechanism, inside battery in existing pole
After fever pressurization, even if having explosion rupture disk explosion pressure release, but the internal electric connection with pole still has, however it remains dangerous hidden
Suffer from.
Utility model content
The purpose of this utility model is in view of the above-mentioned drawbacks of the prior art, providing a kind of electricity with protection structure
Pond top cover.
The technical solution adopted in the utility model is to design a kind of battery cap with protection structure, comprising: cover board,
The pole being arranged on the cover board and the tab being arranged in below pole are provided with the first venthole, institute on the pole
State and be provided with multiple second ventholes on tab, be additionally provided between the pole and the tab overturning chamber and break piece,
The piece of breaking carries out the first venthole with second venthole closing is isolated, and the piece of breaking is fixedly connected with tab；
Fracture belt is provided on the tab.
Preferably, the tab is provided with a connecting hole, and the piece of breaking is provided with a boss extended downwardly, described convex
Platform is fixed at the connection hole.The connecting hole is connect with the periphery of the boss, and when inside battery generates heat, pressure increases
Qiang Shi, described to break piece compression overturning, the boss is moved with the overturning for breaking piece, keeps the fracture belt stress of the tab disconnected
It splits, disconnects the tab and the connection, keep inside battery breaking.
Preferably, the tapered structure of piece of breaking is downwardly projected.Pyramidal structure makes the piece of breaking have overturning surplus,
Piece is broken described in avoiding and generates the continuous phenomenon of drawing because turning height is inadequate, and then cannot achieve the tab and the pole
Be kept completely separate.
Preferably, the fracture belt is arranged in a ring around the connecting hole.It is described be broken take to the connecting hole away from
From identical, uniform force, the synchronism of fracture is higher, also more completely.
Preferably, the fracture belt is arranged between second venthole, connects second venthole.Described second
Venthole connects the fracture belt, reduces the fracture strip length, reduces resistance when fracture, crack velocity is effectively mentioned
The spacing of height, second venthole is related with the size of current of battery.
Preferably, the fracture belt is the groove structure being arranged on the tab.Groove structure make the fracture belt with
The contact surface of the tab is small, effectively accelerates the formation speed of fracture.
Preferably, the section of the groove structure is V-arrangement.Section is V-arrangement, and the fracture belt breaks on a circumference
It splits, fracture is neat, reduces fracture distance.
It preferably, further include the protective cradle being arranged in below the tab.The protective cradle can prevent tab disconnected
The metal for splitting generation, which reams, to be dropped into inside battery, leads to battery catches fire so as to cause inside battery variation.
Preferably, third venthole is provided on the protective cradle.The third venthole is connected to where the tab
Space and inside battery space.
Preferably, the protective cradle is provided with buckling parts, is connect by the buckling parts with the cover board.The protection
Bracket is connect with the cover board, and the protective cradle can be made more stable.
Compared with prior art, the utility model at least has the advantages that the utility model passes through on pole
Piece and the first venthole are broken in setting, are broken piece and are connect with tab, fracture belt is arranged on tab, are increased in cell internal pressure
When, piece overturning is broken in pressure promotion, is broken from fracture belt after tab stress, to keep inside battery breaking, and passes through first
Venthole pressure release prevents from increasing pull-off force due to overturning intracavitary pressure and increasing, is effectively protected battery and user of service.
Detailed description of the invention
Fig. 1 is the general illustration of the utility model embodiment；
Fig. 2 is the diagrammatic cross-section of the utility model embodiment；
Fig. 3 is the pole and tab connection schematic diagram of the utility model embodiment；
Fig. 4 is that the pole of the utility model embodiment connect diagrammatic cross-section with tab；
Fig. 5 be the utility model embodiment tab under regard schematic diagram；
Fig. 6 is partial enlarged view at A in the utility model embodiment Fig. 2.
In figure: 1, cover board；2, tab；21, the second venthole；22, connecting hole；23, fracture belt；3, protective cradle；4, pole
Column providing holes；5, piece is broken；51, boss；6, pole；61, the first venthole；62, cover plate；63, chamber, 7, inner ring body are overturn；71,
Parcel；8, outer ring body；81, annular buckling parts；9, sealing ring.
Specific embodiment
The utility model is described further with reference to the accompanying drawings and examples.
As shown in figures 1 to 6, the utility model proposes a kind of battery caps with protection structure, comprising: cover board 1 is set
The tab 2 setting the pole 6 on the cover board 1 and being arranged in below pole 6 is provided with the first venthole on the pole 6
61, multiple second ventholes 21 are provided on the tab 2, are additionally provided with overturning chamber between the pole 6 and the tab 2
63 and break piece 5, it is described break piece 5 and with second venthole 21 carry out that closing is isolated by the first venthole 61, it is described to break
Piece 5 is fixedly connected with tab 2；Fracture belt 23 is provided on the tab 2.When cell internal pressure increases, pressure, which pushes, is drawn
Part is overturn, and is broken from fracture belt after 2 stress of tab, to keep inside battery breaking, and passes through 61 pressure release of the first venthole,
Prevent from increasing pull-off force because overturning due to pressure increases in chamber 63, make it is described break piece 5 and be not easy to break, be effectively protected battery and
User of service.In the present embodiment, the first venthole 61, the second venthole 21 break 23 shape of fracture belt on piece 5 and tab 2
At the protection structure on battery cap, the safety in utilization of battery is effectively protected.
Further, it is provided with pole providing holes 4 on the cover board, is provided with sealing ring 9 outside the pole providing holes 4,
Inside sealed cell.
Further, pole 6 is positioned by an inner ring body 7 and an outer ring body 8, and 7 inner circumferential of inner ring body is provided with
Annular positioning groove, 6 periphery of pole are provided with positioning ring body, and the positioning ring body is arranged in the annular positioning groove with solid
The fixed pole 6, the outer ring body 8 are provided with annular buckling parts 81, and 7 periphery of inner ring body is provided with annular buckling groove, institute
It states annular buckling parts to be fastened in the annular buckling groove, the inner ring body 7 is fixed, and the inner ring body is additionally provided with a package
Portion 71 wraps up the annular buckling parts 81 on the outer ring body, protects the annular buckling parts 81, is unlikely to deform
And fold.
Piece 5 and first venthole 61 are broken on the pole 6 described in setting, it is described to break piece 5 and the tab 2 company
It connects, the fracture belt 23 is set on the tab 2, when cell internal pressure increases, break piece 5 described in pressure promotion and turned over
Turn, be broken from the fracture belt 23 after 2 stress of tab, to keep inside battery breaking, and ventilate by described first
61 pressure release of hole, avoid it is described break piece 5 and increase pull-off force because the overturning cavity pressure increases, be effectively protected battery
And user of service.
Further, a cover plate 62 is set on first venthole 61, and the cover plate 62 can be rushed to open.
Further, the quantity of second venthole 21 is three, around the company for breaking piece 5 Yu the tab 2
Connect place's setting.
In the utility model embodiment, the tab 2 is provided with a connecting hole 22, it is described break piece 5 be provided with one to
The boss 51 of lower extension, the boss 51 are fixed at the connecting hole 22.The connecting hole 22 and the boss 51
Periphery connection, when inside battery generates heat, and pressure enhances, the piece 5 of breaking is pressurized overturning, and the boss 51 is with breaking piece 5
It overturns and moves, make 23 forced breakage of fracture belt of the tab 2, disconnect the tab 2 and the connection, make inside battery
Open circuit.
Further, the boss 51 is cylindrical structure, and the connecting hole 22 is adapted with the boss 51, for circle
Shape, is easily installed welding, described when breaking piece 5 and overturning, 2 uniform force of tab.
Further, it is provided with a concave inward structure on the boss 51, makes described to break 5 lightweight of piece.
Certainly, the boss 51 is also possible to other shapes structure, and the connecting hole 22 also accordingly changes into commensurate structure.
In the utility model embodiment, the tapered structure of piece 5 of breaking is downwardly projected.Pyramidal structure makes described break
Piece 5 has overturning surplus, avoid it is described break piece 5 because turning height not enough due to generates the continuous phenomenon of drawing, and then cannot achieve
The tab 2 is kept completely separate with the pole 6, and then inside battery is caused to be not effectively form open circuit.
Specifically, the piece 5 of breaking is under the promotion of cell internal pressure, to described when cell internal pressure increases
Overturning in chamber 63 is overturn, a pyramidal structure projected upwards is formed, in this process, the tab 2, which is broken apart, to be come, fracture
Portion is connect with the piece 5 of breaking, and the pole 6 forms open circuit with the tab 2.
In the utility model embodiment, the fracture belt 23 is arranged in a ring around the connecting hole 22.The fracture
Distance with 23 to the connecting hole 22 is identical, and the synchronism of uniform force, fracture is higher, also more completely.
Certainly, the fracture belt 23 is also possible to arrange in other forms, such as rectangular.
In the utility model embodiment, the fracture belt 23 is arranged between second venthole 21, described in connection
Second venthole 21.Second venthole 21 connects the fracture belt 23, reduces 23 length of fracture belt, reduces fracture
When resistance, crack velocity effectively improves.
Further, the length of the fracture belt 23 is designed according to size of current, i.e., described second venthole 21
Spacing is designed according to the demand of the size of current of battery.
Further, the third venthole is arc-shaped structure, facilitates setting fracture belt 23.
Further, the fracture belt 23 is three fracture belts 23 being arranged between second venthole 21.
In the utility model embodiment, the fracture belt 23 is the groove structure being arranged on the tab 2.Groove knot
Structure keeps the contact surface of the fracture belt 23 and the tab 2 small, effectively accelerates the crack velocity of the fracture belt 23.
Further, the lower surface of the tab 2 is arranged in the groove structure, facilitates fracture.
As one embodiment, the upper surface of the tab 2 is arranged in the groove structure.
As one embodiment, the upper and lower surfaces of the tab 2 are arranged in the groove structure.
In the utility model embodiment, the section of the groove structure is V-arrangement.Section is V-arrangement, and the fracture belt 23 exists
It is broken on one circumference, fracture is neat, reduces fracture distance.
Certainly, the section of the groove structure is also possible to other shapes for being convenient for fracture, for example upper and lower surfaces are all arranged
The X-shaped of groove structure.
It further include the protective cradle 3 being arranged in below the tab 2 in the utility model embodiment.The protection branch
The metal that frame 3 can prevent the fracture of tab 2 from generating, which reams, to be dropped into inside battery, leads to battery so as to cause inside battery variation
The problems such as on fire.
Further, the protective cradle 3 is plastic stent, will not generate electrical function with inside battery.
In the utility model embodiment, third venthole is provided on the protective cradle 3.The third venthole connects
Lead to the space at 2 place of tab and the space of inside battery.
Specifically, the third venthole by cell internal pressure be oriented to described in break the boss 51 of piece 5, make the boss
51 stress are concentrated.Further, the diameter of the third venthole is less than the diameter in connection fracture hole, to prevent fracture belt
Metal, which is cut, after 23 fractures falls from the third venthole into inside battery.
In the utility model embodiment, the protective cradle 3 is provided with buckling parts, passes through the buckling parts and the lid
Plate 1 connects.The protective cradle 3 is connect with the cover board 1, and the protective cradle 3 can be made more stable.
As one embodiment, the protective cradle 3 is provided with buckling parts, is connected by the buckling parts and the tab 2
It connecing, the protective cradle 3 is connect with the tab 2, the position of third venthole and the fracture belt 23 described in energy effective position,
Metal is cut and is fallen from the third venthole into inside battery after being effectively prevented from fracture.
Above-described embodiment is merely to illustrate specific embodiment of the present utility model.It should be pointed out that for this field
Those of ordinary skill for, without departing from the concept of the premise utility, several deformations and variation can also be made, this
A little deformations and variation all should belong to the protection scope of the utility model.
Claims (10)
1. it is a kind of with protection structure battery cap characterized by comprising cover board, the pole being arranged on the cover board,
And the tab below pole is set, it is provided with the first venthole on the pole, multiple second are provided on the tab
Venthole is additionally provided with overturning chamber between the pole and the tab and breaks piece, the piece of breaking for the first venthole
It carries out that closing is isolated with second venthole, the piece of breaking is fixedly connected with tab；Fracture belt is provided on the tab.
2. the battery cap with protection structure as described in claim 1, which is characterized in that the tab is provided with a connection
Hole, the piece of breaking are provided with a boss extended downwardly, and the boss is fixed at the connection hole.
3. the battery cap with protection structure as claimed in claim 2, which is characterized in that described to break the tapered structure of piece
It is downwardly projected.
4. the battery cap with protection structure as claimed in claim 2, which is characterized in that the fracture belt surrounds the company
Hole is connect to arrange in a ring.
5. the battery cap with protection structure as claimed in claim 4, which is characterized in that the fracture belt is arranged described
Between second venthole, second venthole is connected.
6. the battery cap with protection structure as claimed in claim 5, which is characterized in that the fracture belt is setting in institute
State the groove structure on tab.
7. the battery cap with protection structure as claimed in claim 6, which is characterized in that the section of the groove structure is
V-arrangement.
8. the battery cap with protection structure as described in claim 1, which is characterized in that further include being arranged in the tab
The protective cradle of lower section.
9. the battery cap with protection structure as claimed in claim 8, which is characterized in that be provided on the protective cradle
Third venthole.
10. the battery cap with protection structure as claimed in claim 9, which is characterized in that the protective cradle is provided with
Buckling parts, the protective cradle are connect by the buckling parts with the cover board.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820392895.1U CN208315617U (en) | 2018-03-21 | 2018-03-21 | A kind of battery cap with protection structure |
| PCT/CN2018/082344 WO2019178900A1 (en) | 2018-03-21 | 2018-04-09 | Battery top cover having protective structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820392895.1U CN208315617U (en) | 2018-03-21 | 2018-03-21 | A kind of battery cap with protection structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208315617U true CN208315617U (en) | 2019-01-01 |
Family
ID=64720647
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820392895.1U Active CN208315617U (en) | 2018-03-21 | 2018-03-21 | A kind of battery cap with protection structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208315617U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2023206981A1 (en) * | 2022-04-29 | 2023-11-02 | 湖北亿纬动力有限公司 | Battery and battery module |
-
2018
- 2018-03-21 CN CN201820392895.1U patent/CN208315617U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2023206981A1 (en) * | 2022-04-29 | 2023-11-02 | 湖北亿纬动力有限公司 | Battery and battery module |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN101170167B (en) | Explosion-proof covering board component | |
| CN2831449Y (en) | Safety explosion-proof device for lithium ion cell | |
| CN101170168A (en) | Covering board component with explosion-proof function | |
| CN204946959U (en) | A kind of battery modules | |
| CN208315617U (en) | A kind of battery cap with protection structure | |
| CN208315619U (en) | A kind of riveting battery cap of Anti-fall | |
| CN206742294U (en) | Battery cap and battery | |
| CN101170169B (en) | Covering board component | |
| CN206685462U (en) | A kind of cell electrode assemblies, cover plate assembly and battery | |
| CN208673911U (en) | A kind of noinductive capacitor | |
| CN105140437A (en) | Battery module | |
| CN103035863B (en) | Battery current collector | |
| CN201918444U (en) | Explosion-proof cap of power-type lithium ion battery | |
| CN103700495B (en) | A kind of anti-explosion short-circuit-prevention capacitor | |
| CN101853930A (en) | Power-type lithium ion battery explosion-proof cap and manufacturing method thereof | |
| CN206022490U (en) | The controllable rupture disk of blow-up point and battery | |
| CN204991882U (en) | Explosion -proof early warning lithium cell | |
| CN201051449Y (en) | A device for preventing common capacitor from explosion | |
| CN207980218U (en) | A kind of insurance of Portable extinguisher and electrostatic prevention structure | |
| CN208538990U (en) | A kind of cylindrical lithium ion battery new type explosion proof cap | |
| CN207818639U (en) | Lithium battery top cap plate, lithium battery multistage explosion-protection equipment and anti-explosion safety lithium battery | |
| CN209104245U (en) | A kind of explosion-proof mercury-free battery of iron-clad | |
| CN207489979U (en) | A kind of explosion-protection equipment of lithium battery | |
| CN202977598U (en) | Battery current collector | |
| CN202363526U (en) | Early warning type anti-explosion plug for lithium battery |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CP03 | Change of name, title or address | ||
| CP03 | Change of name, title or address |
Address after: 213200 Minghu Road, Jintan District, Changzhou City, Jiangsu Province, 399 Patentee after: Changzhou Redford Precision Technology Co.,Ltd. Address before: Guangming Martin street Shenzhen city Guangdong province 518000 water Sixth Industrial Zone xufa Science Park 6, building 7, building 3 floor 3A Patentee before: SHENZHEN RED FAIRY PRECISION TECHNOLOGY CO., LTD. |