CN203774388U - Cylindrical lithium battery explosion-proof cap - Google Patents
Cylindrical lithium battery explosion-proof cap Download PDFInfo
- Publication number
- CN203774388U CN203774388U CN201420200706.8U CN201420200706U CN203774388U CN 203774388 U CN203774388 U CN 203774388U CN 201420200706 U CN201420200706 U CN 201420200706U CN 203774388 U CN203774388 U CN 203774388U
- Authority
- CN
- China
- Prior art keywords
- explosion
- boss
- cone
- lithium 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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Classifications
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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
Landscapes
- Gas Exhaust Devices For Batteries (AREA)
Abstract
The utility model discloses a cylindrical lithium battery explosion-proof cap. The cylindrical lithium battery explosion-proof cap is characterized by comprising an upper cap, an explosion-proof plate and a boss porous plate, wherein the upper cap, the explosion-proof plate and the boss porous plate are formed by stamping a metal material, the upper cap consists of a ring and a boss with a trapezoid cross section, the oblique surface of the boss is provided with one or more through holes which are uniformly distributed, the surface of the explosion-proof plate is provided with a mark groove, the boss porous plate consists of an annular edge and an inner hollow cone, the upper end surface of the cone is provided with a plurality of ventilation holes, the annular edge is fixedly arranged on the bottom end of the cone, the annular edge and the cone are integrally formed, the explosion-proof plate is fixedly welded on the lower end of the annular edge, the upper cap is sleeved on the cone and fixed by virtue of a spot welding manner, the outer ends of the ring, the annular edge and the explosion-proof plate are respectively wrapped by a seal ring. By adopting the cylindrical lithium battery explosion-proof cap, when the air pressure inside the battery is greater than a set value, the air pressure can enter through the ventilation holes of the boss porous plate and discharged through the through holes of the upper cap when the explosion-proof plate is expanded outwards under the pressure to be fractured, and an effect for releasing the pressure and preventing the explosion can be realized.
Description
Technical field
The utility model relates to a kind of lithium battery, particularly a kind of cylindrical lithium battery explosion-proof cap.
Background technology
Battery is article common also conventional in daily life, uses the accident that has also occurred a lot of danger, and as lithium battery, it need to carry out some safety measure protections, in case at high temperature or excessively discharge and recharge and please the accidents such as quick-fried potential safety hazard occur situation.
Summary of the invention
The purpose of this utility model is a kind of cylindrical lithium battery explosion-proof cap that a kind of stable internal resistance is provided in order to solve above-mentioned the deficiencies in the prior art, ensures cylindrical lithium battery use safety.
To achieve these goals, a kind of cylindrical lithium battery explosion-proof cap that the utility model is designed, it is characterized in that: comprise upper cap, burst disk and boss orifice plate, described upper cap, burst disk and boss orifice plate are by metal material punch forming, upper cap is that trapezoidal boss forms by annulus and cross section, the inclined-plane of described boss is provided with one or more through holes being evenly distributed, on the surface of described burst disk, be carved with the mark groove of scoring ring shape, described boss orifice plate is made up of the frustum of a cone that encircles limit and interior hollow, frustum of a cone upper surface is provided with several air vent holes, described ring limit is fixed on frustum of a cone bottom, both also process one-body molded, described burst disk is welded on ring lower end, limit and fixes, described upper cap is enclosed within on the frustum of a cone, and fix by spot welding, described annulus, ring limit, burst disk outer end is also enclosed with sealing ring, described sealing ring is formed by PP plastic-injection.
Preferably, the quantity of described through hole is provided with five.
Preferably, the quantity of described air vent hole is provided with two.
Preferably, described ring limit is provided with venthole.
A kind of cylindrical lithium battery explosion-proof cap that the utility model obtains, in the time that inside battery air pressure is greater than set point, air pressure can enter from the air vent hole of boss orifice plate, at this moment burst disk can be stressed after outside expansion is split and be discharged by the through hole of upper cap, reach the effect of pressure-relief explosion-proof, burst disk and the welding of boss orifice plate, upper cap and the spot welding of boss orifice plate simultaneously, this form is connected with to be beneficial to and ensures that lithium battery internal resistance is stable, has also promoted the serviceability of lithium battery.
Brief description of the drawings
Fig. 1 is overall structure schematic diagram of the present utility model;
Fig. 2 is the structural representation of boss orifice plate in Fig. 1;
Fig. 3 is the structural representation of upper cap in Fig. 1;
Fig. 4 is the structural representation that Fig. 3 upper cap is provided with venthole.
In figure: upper cap 1, boss orifice plate 2, sealing ring 3, burst disk 4, through hole 10, boss 11, ring limit 12, venthole 13, air vent hole 21, ring limit 22, the frustum of a cone 23.
Embodiment
Below in conjunction with drawings and Examples, the utility model is further illustrated.
Embodiment:
As shown in Figures 1 to 4, a kind of cylindrical lithium battery explosion-proof cap that the utility model provides, comprise upper cap 1, burst disk 4 and boss orifice plate 2, described upper cap 1, burst disk 4 and boss orifice plate 2 are by metal material punch forming, upper cap 1 is that trapezoidal boss 11 forms by annulus 12 and cross section, the inclined-plane of described boss 11 is provided with one or more through holes 10 being evenly distributed, and the quantity of described through hole 10 is provided with five; On the surface of described burst disk 4, be carved with the mark groove of scoring ring shape, acting as in the time that inside battery air pressure reaches set point of this mark groove opened, and better allow burst disk and boss orifice plate 2 better fit, described boss orifice plate 2 is made up of the frustum of a cone 23 of ring limit 22 and interior hollow, frustum of a cone upper surface is provided with several air vent holes 21, and the quantity of described air vent hole 21 is provided with two; Described ring limit 22 is fixed on the frustum of a cone 23 bottoms, both also process one-body molded, described burst disk 4 be welded on ring 22 lower ends, limit fix, described ring limit 12 is provided with venthole 13; Described upper cap 1 is enclosed within on the frustum of a cone 23 and by spot welding fixes, and described annulus 10, ring limit 22, burst disk 4 outer ends are also enclosed with sealing ring 3, and described sealing ring 3 is formed by PP plastic-injection.
Above-mentioned boss orifice plate plays the gas channel and the effect that is connected anode that discharge inside battery air pressure; Sealing ring forms its both positive and negative polarity, acid and alkali-resistance that plays isolated insulation differentiation electric current by PP plastic-injection and prevents that battery leakage upper cap is for discharging inside battery air pressure and contacting electrical appliance.
A kind of cylindrical lithium battery explosion-proof cap obtained above, when its inside battery air pressure is greater than set point, air pressure can enter from the air vent hole of boss orifice plate 21, after burst disk outwards being expanded split, is discharged by the through hole 10 of upper cap, reaches explosion-proof effect.
Above content is in conjunction with concrete preferred implementation further detailed description of the utility model, can not assert that concrete enforcement of the present utility model is confined to these explanations.For general technical staff of the technical field of the invention; without departing from the concept of the premise utility; its framework form can be flexible and changeable; just make some simple deduction or replace, all should be considered as belonging to the utility model by the definite scope of patent protection of submitted to claims.
Claims (4)
1. a cylindrical lithium battery explosion-proof cap, it is characterized in that: comprise upper cap, burst disk and boss orifice plate, described upper cap, burst disk and boss orifice plate are by metal material punch forming, upper cap is that trapezoidal boss forms by annulus and cross section, the inclined-plane of described boss is provided with one or more through holes being evenly distributed, on the surface of described burst disk, be carved with the mark groove of scoring ring shape, described boss orifice plate is made up of the frustum of a cone that encircles limit and interior hollow, the end place, limit of frustum of a cone upper surface is provided with several air vent holes, described ring limit is fixed on frustum of a cone bottom, both also process one-body molded, described burst disk is welded on ring lower end, limit and fixes, described upper cap is enclosed within on the frustum of a cone, and fix by spot welding, described annulus, ring limit, burst disk outer end is also enclosed with sealing ring, described sealing ring is formed by PP plastic-injection.
2. a kind of cylindrical lithium battery explosion-proof cap according to claim 1, is characterized in that: the quantity of described through hole is provided with five.
3. a kind of cylindrical lithium battery explosion-proof cap according to claim 2, is characterized in that: the quantity of described air vent hole is provided with two.
4. a kind of cylindrical lithium battery explosion-proof cap according to claim 1, is characterized in that: described ring limit is provided with venthole.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420200706.8U CN203774388U (en) | 2014-04-23 | 2014-04-23 | Cylindrical lithium battery explosion-proof cap |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420200706.8U CN203774388U (en) | 2014-04-23 | 2014-04-23 | Cylindrical lithium battery explosion-proof cap |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203774388U true CN203774388U (en) | 2014-08-13 |
Family
ID=51291542
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420200706.8U Expired - Fee Related CN203774388U (en) | 2014-04-23 | 2014-04-23 | Cylindrical lithium battery explosion-proof cap |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203774388U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109256513A (en) * | 2018-10-17 | 2019-01-22 | 江苏镭腾能源科技有限公司 | A kind of half-headed extremely thin type cylindrical lithium battery nut cap |
| CN112086603A (en) * | 2020-09-01 | 2020-12-15 | 湖南安德丰新能源科技有限公司 | Explosion-proof cover plate of lithium ion battery |
-
2014
- 2014-04-23 CN CN201420200706.8U patent/CN203774388U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109256513A (en) * | 2018-10-17 | 2019-01-22 | 江苏镭腾能源科技有限公司 | A kind of half-headed extremely thin type cylindrical lithium battery nut cap |
| CN112086603A (en) * | 2020-09-01 | 2020-12-15 | 湖南安德丰新能源科技有限公司 | Explosion-proof cover plate of lithium ion battery |
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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: 20140813 Termination date: 20150423 |
|
| EXPY | Termination of patent right or utility model |