CN201562699U - Cover cap of battery and battery thereof - Google Patents
Cover cap of battery and battery thereof Download PDFInfo
- Publication number
- CN201562699U CN201562699U CN200920205152XU CN200920205152U CN201562699U CN 201562699 U CN201562699 U CN 201562699U CN 200920205152X U CN200920205152X U CN 200920205152XU CN 200920205152 U CN200920205152 U CN 200920205152U CN 201562699 U CN201562699 U CN 201562699U
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- Prior art keywords
- battery
- hole
- cap
- explosion
- film
- 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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- 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
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
- Y02P70/50—Manufacturing or production processes characterised by the final manufactured product
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- Sealing Battery Cases Or Jackets (AREA)
Abstract
The utility model provides a cover cap of a battery and a battery thereof. The cover cap comprises an upper cap, an explosion-proof ball and a bottom cover, wherein a through-hole is formed on the bottom cover, and thin film for closing or opening the through-hole is arranged on one side of the bottom cover, which turns the back to the explosion-proof ball. The battery provided by the utility model comprises the cover cap of the battery, a shell, electrode cores and electrolyte, wherein the cover cap comprises the upper cap, the explosion-proof ball and the bottom cover, the through-hole is formed on the bottom cover, and the thin film for closing or opening the through-hole is arranged on one side of the bottom cover, which turns the back to the explosion-proof ball. Accordingly, by arranging the thin film for closing or opening the through-hole on one side of the bottom cover, which turns the back to the explosion-proof ball, the thin film of the battery provided by the utility model can be burst open by the internal pressure of the battery when the internal pressure of the battery is sharply increased to the fracture limit of the safety explosion-proof film, thus discharging the accumulated gas instantaneously, guaranteeing the safety performance of the battery, preventing the liquid of the battery from leaking and increasing the yield of battery.
Description
Technical field
The utility model belongs to field of batteries, relates in particular to a kind of battery cap and battery thereof.
Background technology
Along with the development of society, people increase day by day to portable lightweight electronic product demand, and alkaline secondary cell has obtained application more and more widely as its main stand-by power supply.
Alkaline secondary cell such as ni-mh, nickel-cadmium cell, generally form vortex-like pole piece through reeling by positive plate, negative plate and the interval barrier film between positive plate and negative plate, in the steel circular cylindrical of packing into or the rectangular cell housing, a certain amount of electrolyte of annotating, the KOH aqueous solution as 30% mass concentration, with of the oral area sealing of positive pole block, make battery with battery container.
At present, existing battery cap complex structure, the structure that many battery caps adopt is to go up cap+explosion-proof ball+bottom assembly, among production process, battery is made flow process: volume battery-put face pad-jet-bedding to put the oil-fluid injection-discharge pond block-spot welding block-by cap-seal etc., the different generations of the explosion-proof ball compression ratio height defective phenomenons of withstand voltages of blocking a shot after the spot welding.Make particularly that charging changes into behind the finished product battery, leakage can appear in partial volume, analyzing reason is that the block withstand voltage causes leakage mostly, seriously also can battery explosion.
Summary of the invention
The common batteries charging changes into the utility model, the leakage technical problem can appear in partial volume, and a kind of new battery cap and battery thereof are provided in order to solve.
A kind of battery cap that the utility model provides, this battery cap comprises cap, explosion-proof ball and bottom, explosion-proof ball is between last cap and bottom in the formed space, last cap is fixedlyed connected with bottom, described bottom is provided with a through hole, and is provided with the film that seals or open described through hole in a side that deviates from described explosion-proof ball of described bottom.
A kind of battery that the utility model provides, this battery comprises battery cap, battery container and is sealed in battery container interior pole piece and electrolyte, described pole piece comprises positive plate, negative plate and the interval barrier film between positive plate and negative plate, wherein, this battery cap comprises cap, explosion-proof ball and bottom, explosion-proof ball is between last cap and bottom in the formed space, last cap is fixedlyed connected with bottom, described bottom is provided with a through hole, and is provided with the film that seals or open described through hole in a side that deviates from described explosion-proof ball of described bottom.
A kind of battery that the utility model provides is provided with sealing by the side that deviates from described explosion-proof ball at described bottom or opens the film of described through hole, when inner pressure of battery sharply increases, when reaching the compressive yield strength of safety anti-explosive film, film is broken through by inner pressure of battery, moment is discharged the gas that gathers, guarantee the security performance of battery, and the setting of film makes it can not cause battery leakage, improved the fraction defective of battery.
Description of drawings
Fig. 1 be the battery cap that provides of prior art partly cut open structural representation;
Fig. 2 be a kind of battery cap of providing of the utility model partly cut open structural representation;
Fig. 3 is the perspective view of the battery bottom that provides of the utility model;
Fig. 4 is the cut-away view of the battery bottom that provides of the utility model;
Fig. 5 is the partial structurtes enlarged diagram of Fig. 4;
Fig. 6 be a kind of battery of providing of the utility model partly cut open structural representation;
Fig. 7 is embodiment and the Comparative Examples product fraction defective comparison diagram that the utility model provides.
In the accompanying drawing: the last cap of 1-, 2-explosion-proof ball, 3-bottom, 4-film, 5-through hole, 6-battery container, 7-fixed part.
Embodiment
Clearer for technical problem, technical scheme and beneficial effect that the utility model is solved, below in conjunction with drawings and Examples, the utility model is further elaborated.Should be appreciated that specific embodiment described herein only in order to explanation the utility model, and be not used in qualification the utility model.
A kind of battery cap that the utility model provides, shown in Figure 2, this battery cap comprises cap 1, explosion-proof ball 2 and bottom 3, explosion-proof ball 2 is between last cap 1 and bottom 3 in the formed space, last cap 1 is fixedlyed connected with bottom 3, described bottom 3 is provided with a through hole 5, and is provided with the film 4 that seals or open described through hole 5 in a side of described explosion-proof ball 2 of deviating from of described bottom 3.
As shown in Figure 4, the part of the edge part of described film 4 is fixed on described through hole 5 peripheries, forms a fixed part 7, and described film 4 covers described through hole 5.And described film 4 except that with the fixing part of bottom 3 part fixing with bottom 3, can fit tightly with described through hole 5 peripheries, can be used for sealing or opening described through hole 5.Above-mentioned fixed form can be by being provided with a card platform (not shown) on bottom 3, on film 4, be provided with one with the above-mentioned Ka Tai hole clipping (not shown) of clamping cooperation mutually; Can also adopt in the method for paste, the alite paste in this bonding method gets final product for the material that does not react with battery electrolyte, as carboxymethyl cellulose gum, and polyvinyl alcohol glue, polyurethane adhesive, polytetrafluoroethylene or the like.
The material of film 4 gets final product for the material that does not react with battery electrolyte, as hard polypropylene synthetic.
A side that deviates from described explosion-proof ball 2 of described bottom 3 is provided with sealing or opens the film 4 of described through hole 5; When making battery, after adopting the spot welding battery cap during fluid injection, deviating from of bottom 3 is provided with the film 4 that covers through hole 5, so alkali lye can flow in the battery along film 4, owing to be arranged on the one side that deviates from bottom, change in battery charge, during partial volume, battery container 5 is inner itself to exist certain outside pressure, this pressure makes the described through hole 5 of described film 4 sealings realize sealing function, so that the phenomenon of leakage can not occur; During the spot welding battery cap, alkali lye equally can leakage yet after adopting fluid injection.
Because film 4 areas do not reach the effect of requirement too greatly, also can influence properties of product too for a short time, the area of film 4 is slightly larger than the hole area of described through hole 5, thus the area of described film 4 be bottom 3 through holes 5 hole area 105%～120%, preferred 110%.
As shown in Figure 2, the described explosion-proof ball 2 general highly elastic materials such as Ethylene Propylene Terpolymer or acrylonitrile-butadiene rubber that adopt, explosion-proof ball 2 can be spherical, cylindrical or square column type, when described explosion-proof ball 2 is a catercorner length with the interior circular diameter of anodal block equates square column type, on each side of square column type explosion-proof ball 2, all has the open slot (not shown).
A kind of battery that the utility model provides, as shown in Figure 5, this battery comprises battery cap, battery container 6 and be sealed in pole piece and electrolyte (not shown) in the battery container, described pole piece comprises the positive plate (not shown), negative plate (not shown) and the interval barrier film (not shown) between positive plate and negative plate, wherein, this battery cap comprises cap 1, explosion-proof ball 2 and bottom 3, explosion-proof ball 2 is between last cap 1 and bottom 3 in the formed space, last cap 1 is fixedlyed connected with bottom 3, described bottom 3 is provided with a through hole 5, and is provided with the film 4 that seals or open described through hole 5 in a side of described explosion-proof ball 2 of deviating from of described bottom 3.
The battery that the utility model provides comprises battery cap, battery container 5 and is sealed in pole piece and electrolyte (not shown) in the battery container 6 by battery cap, wherein, and the battery cap that described battery cap provides for the utility model.
Battery of the present utility model is because explosion-proof ball 2 sides in the battery cap are provided with the open slot (not shown), increased inner headspace than original battery cap, solve the problem that gas that battery produces and puff can not be discharged fast effectively when short circuit, improved the fail safe of battery, and it is simple in structure, easily manufactured.
First kind of cell manufacturing method of the present utility model: the utility model is an example with ni-mh/nickel-cadmium cell;
Battery cap is made: can adopt various material well known in the art to make, as the steel material; Can determine according to battery size; Battery cap described in the utility model can wholely be made, and it is one-body molded to be used for punching press, and through hole 5 is set on bottom 3 simultaneously, and in a side of described explosion-proof ball 2 of deviating from of bottom 3 film 4 that covers through hole 5 is set.
Battery is made:
Make pole piece: produce nickel positive pole, cadmium cathode with general method;
Reel: will produce nickel positive pole, cadmium cathode and barrier film combine, and reel with half-automatic winder and to make pole piece;
Dress shell: in coiling is packed cylinder type nickel plating box hat into;
Put the oil: put the oil with nickel plating box hat jet-bedding and with inwall on the box hat, can make the better tightness of battery like this, and can prevent battery leakage;
Discharge pond sealing ring: sealing ring is placed in the battery case;
By blocking a shot: battery cap of the present utility model is pressed in the respective battery;
Annotate alkali lye: will inject alkali lye in the semi-finished product under the above-mentioned operation;
Seal: battery is sealed with automatic sealing;
Subsequent handling: comprise the charging of battery, detect that packing etc. is finished battery and made.
Second kind of cell manufacturing method of the present utility model: the utility model is an example with ni-mh/nickel-cadmium cell;
Battery cap is made: can adopt various material well known in the art to make, as the steel material; Can determine according to battery size; Battery cap described in the utility model can wholely be made, and it is one-body molded to be used for punching press, and through hole 5 is set on bottom 3 simultaneously, and in a side of described explosion-proof ball 2 of deviating from of bottom 3 film 4 that covers through hole 5 is set.
Battery is made:
Make pole piece: produce nickel positive pole, cadmium cathode with general method;
Reel: will produce nickel positive pole, cadmium cathode and barrier film combine, and reel with half-automatic winder and to make pole piece;
Dress shell: in coiling is packed cylinder type nickel plating box hat into;
Put the oil: put the oil with nickel plating box hat jet-bedding and with inwall on the box hat, can make the better tightness of battery like this, and can prevent battery leakage;
Annotate alkali lye: will inject alkali lye in the semi-finished product under the above-mentioned operation;
Discharge pond sealing ring: sealing ring is placed in the battery case;
By blocking a shot: block of the present utility model is pressed in the respective battery;
Seal: battery is sealed with automatic sealing;
Subsequent handling: comprise the charging of battery, detect that packing etc. is finished battery and made.
According to battery provided by the utility model, also comprise other necessary assembly that battery pack is required, and the assembly method of battery pack is conventionally known to one of skill in the art, do not repeat them here.
Embodiment:
The making of battery cap, described battery cap is provided with through hole 5 simultaneously, and in a side of described explosion-proof ball 2 of deviating from of bottom 3 film 4 that covers through hole 5 is set with the integrated method preparation of punching press on bottom 3;
Battery is made: combine with general nickel positive pole, cadmium cathode and barrier film, in coiling was packed cylinder type nickel plating box hat into, the positive pole ear of battery was connected with battery cap, and negative lug is connected with battery container, injected alkali lye, follow-up operations such as charging; Adopt above-mentioned battery cap, and the capacity of producing is certain Sc type battery, this battery is designated as A1; Finishing battery makes.
Comparative example:
According to prior art, comparative example adopts general battery cap.
Battery is made: combine with general nickel positive pole, cadmium cathode and barrier film, in coiling is packed cylinder type nickel plating box hat into, inject alkali lye, adopt general battery cap, and the capacity of producing is certain Sc type battery that this battery is remembered A2.
As seen from Figure 6, make 400 batteries according to same material and method, adopt the finished product fraction defective of the battery A1 of battery cap structure of the present utility model obviously to reduce, because the variation of battery cap structure of the present utility model, the design of this cap diapire thinner wall section is provided with like this and has improved battery safety.
The above only is preferred embodiment of the present utility model; not in order to restriction the utility model; all any modifications of within spirit of the present utility model and principle, being done, be equal to and replace and improvement etc., all should be included within the protection range of the present utility model.
Claims (5)
1. battery cap, this battery cap comprises cap, explosion-proof ball and bottom, explosion-proof ball is between last cap and bottom in the formed space, last cap is fixedlyed connected with bottom, it is characterized in that, described bottom is provided with a through hole, and is provided with the film that seals or open described through hole in a side that deviates from described explosion-proof ball of described bottom.
2. battery cap according to claim 1 is characterized in that, the part of described film is fixed on described through hole periphery, and described film covers described through hole.
3. battery cap according to claim 1 is characterized in that, the area of described film is slightly larger than the hole area of described through hole.
4. battery cap according to claim 3 is characterized in that, the area of described film be through hole hole area 105%～120%.
5. battery, this battery comprises battery cap, battery container and is sealed in battery container interior pole piece and electrolyte, described pole piece comprises positive plate, negative plate and the interval barrier film between positive plate and negative plate, it is characterized in that described battery cap is any described battery cap among the claim 1-4.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200920205152XU CN201562699U (en) | 2009-09-16 | 2009-09-16 | Cover cap of battery and battery thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200920205152XU CN201562699U (en) | 2009-09-16 | 2009-09-16 | Cover cap of battery and battery thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201562699U true CN201562699U (en) | 2010-08-25 |
Family
ID=42627852
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN200920205152XU Expired - Fee Related CN201562699U (en) | 2009-09-16 | 2009-09-16 | Cover cap of battery and battery thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201562699U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102064292A (en) * | 2010-12-22 | 2011-05-18 | 深圳市量能科技有限公司 | Method for assembling rechargeable battery |
| WO2018019212A1 (en) * | 2016-07-29 | 2018-02-01 | 比亚迪股份有限公司 | Composite explosion-proof valve, cover plate assembly, and battery |
-
2009
- 2009-09-16 CN CN200920205152XU patent/CN201562699U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102064292A (en) * | 2010-12-22 | 2011-05-18 | 深圳市量能科技有限公司 | Method for assembling rechargeable battery |
| CN102064292B (en) * | 2010-12-22 | 2013-08-14 | 深圳市量能科技有限公司 | Method for assembling rechargeable battery |
| WO2018019212A1 (en) * | 2016-07-29 | 2018-02-01 | 比亚迪股份有限公司 | Composite explosion-proof valve, cover plate assembly, and 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: 20100825 Termination date: 20150916 |
|
| EXPY | Termination of patent right or utility model |