CN203589091U - Positive cap and battery - Google Patents
Positive cap and battery Download PDFInfo
- Publication number
- CN203589091U CN203589091U CN201320654016.5U CN201320654016U CN203589091U CN 203589091 U CN203589091 U CN 203589091U CN 201320654016 U CN201320654016 U CN 201320654016U CN 203589091 U CN203589091 U CN 203589091U
- Authority
- CN
- China
- Prior art keywords
- cover
- battery
- solder joint
- positive electrode
- electrode cap
- 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 - Lifetime
Links
- 229910000679 solder Inorganic materials 0.000 claims description 43
- 239000003792 electrolyte Substances 0.000 claims description 5
- 238000003466 welding Methods 0.000 abstract description 17
- 239000011248 coating agent Substances 0.000 abstract description 8
- 238000000576 coating method Methods 0.000 abstract description 8
- 230000007613 environmental effect Effects 0.000 abstract description 4
- 238000003860 storage Methods 0.000 abstract description 2
- 238000004880 explosion Methods 0.000 abstract 2
- 239000000463 material Substances 0.000 description 5
- 238000000034 method Methods 0.000 description 5
- 239000011257 shell material Substances 0.000 description 3
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 2
- 229910000881 Cu alloy Inorganic materials 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 2
- 229910052802 copper Inorganic materials 0.000 description 2
- 239000010949 copper Substances 0.000 description 2
- 230000000284 resting effect Effects 0.000 description 2
- 229910013063 LiBF 4 Inorganic materials 0.000 description 1
- 229910013870 LiPF 6 Inorganic materials 0.000 description 1
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 description 1
- 229910018095 Ni-MH Inorganic materials 0.000 description 1
- 229910018477 Ni—MH Inorganic materials 0.000 description 1
- 239000006183 anode active material Substances 0.000 description 1
- OJIJEKBXJYRIBZ-UHFFFAOYSA-N cadmium nickel Chemical compound [Ni].[Cd] OJIJEKBXJYRIBZ-UHFFFAOYSA-N 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 239000011258 core-shell material Substances 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 229910052744 lithium Inorganic materials 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000012528 membrane Substances 0.000 description 1
- 238000003672 processing method Methods 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
Images
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
Abstract
The utility model discloses a positive cap. The positive cap comprises a bottom cover, a surface cover and an anti-explosion ball, wherein the surface cover is connected to the bottom cover, the anti-explosion ball is located between the bottom cover and the surface cover, the bottom cover is provided with a first surface close to the surface cover and a second surface far away from the surface cover, and the bottom cover is fixed on the surface cover through welding spots which are located on the second surface of the bottom cover. The positive cap has the advantages that the welding spots formed when the bottom cover and the surface cover are welded are located in a battery case after a battery is packaged; therefore, a coating damaged during welding is located in the battery case and is hardly affected by environmental factors, and the welding spots are prevented from rusting. The utility model also discloses the battery using the positive cap; and the coating outside the battery is in good condition, so that the storage time of the battery is long.
Description
Technical field
The utility model relates to field of batteries, particularly relates to positive electrode cap and battery.
Background technology
Cylindrical battery positive electrode cap generally adopts upper cover and lower cover to add explosion-proof ball hermetically-sealed construction, because it is simple in structure, produces easily processing, more and more field of batteries that are applied to.
The processing method of battery positive cap is generally to adopt after upper and lower covers punch forming, electroplates, and then carries out upper and lower covers welding.Usually, what produce more employing is the mode that upper cover is welded on lower cover, and solder joint is stayed and covered.Because upper cover is first to electroplate when producing, when spot welding, coating can be destroyed, in the long storage time process in later stage, can, because the factor of environment causes the normal phenomenon of getting rusty in solder joint place, cause outside batteries to be subject to serious impact.
Utility model content
Based on this, be necessary to provide a kind of positive electrode cap that is difficult for getting rusty and battery.
A kind of positive electrode cap, described in the cover that comprises bottom, be connected with described bottom and the explosion-proof ball between described bottom and described cover, bottom has the first surface of close described cover and the second surface away from described cover, described bottom is fixed on described cover by solder joint, and described solder joint is positioned at the second surface of described bottom.
In an embodiment, the second surface of described bottom is provided with shrinkage pool therein, and the first surface of described bottom is provided with projection, and described shrinkage pool and described projection are oppositely arranged, and described solder joint is positioned at described shrinkage pool.
In an embodiment, the number of described solder joint is two or more therein, and described solder joint is uniformly distributed in the second surface of described bottom.
A kind of battery, comprise battery case, encapsulate described battery case positive electrode cap, be packaged in battery core and the electrolyte of described battery case inside, described bottom has the first surface of close described cover and the second surface away from described cover, described bottom is fixed on described cover by solder joint, and described solder joint is positioned at the second surface of described bottom.
In an embodiment, the second surface of described bottom is provided with shrinkage pool therein, and the first surface of described bottom is provided with projection, and described shrinkage pool and described projection are oppositely arranged, and described solder joint is positioned at described shrinkage pool.
In an embodiment, the number of described solder joint is two or more therein, and described solder joint is uniformly distributed in the second surface of described bottom.
Above-mentioned positive electrode cap, the solder joint forming during the welding of bottom and cover is positioned at battery case being packaged into after battery, and therefore, coating destroyed during welding is positioned at battery container, is subject to the impact of environmental factor less, has avoided the get rusty generation of phenomenon of solder joint place.Use the battery of above-mentioned positive electrode cap, outside coating is intact, and the resting period is long.
Accompanying drawing explanation
Fig. 1 is the second surface structural representation of the bottom of an execution mode positive electrode cap;
Fig. 2 is the structural representation of the cover of an execution mode positive electrode cap.
Embodiment
Below in conjunction with embodiment, the utility model is further elaborated.
As depicted in figs. 1 and 2, the positive electrode cap of an execution mode, the cover 20 and the explosion-proof ball between bottom 10 and cover 20 that comprise bottom 10, are connected with bottom 10.
Above-mentioned positive electrode cap, the solder joint 102 that bottom 10 forms while welding with cover 20 is positioned at battery case being packaged into after battery, and therefore, coating destroyed during welding is positioned at battery container, be subject to the impact of environmental factor less, avoided the get rusty generation of phenomenon of solder joint 102 places.
In one embodiment, the second surface of bottom is provided with shrinkage pool, bottom is when making, by punch forming, at second surface, form shrinkage pool, shrinkage pool in the corresponding formation projection of first surface of bottom, when bottom is welded on cover, applies electric current in projection in the process forming, by bottom and cover welding, the solder joint of formation is positioned at shrinkage pool.Because the contact area of high spot and cover is little, the position of solder joint is chosen in shrinkage pool, the welding current in the time of can reducing spot welding, saves welding cost.
In one embodiment, the number of solder joint 102 is two or more, and solder joint 102 is uniformly distributed in the second surface of bottom 10.The number of solder joint 102 can be selected according to bottom 10 and the volume of cover 20 and the technique of making, in the present embodiment, the number of solder joint 102 is three, and three solder joints 102 are uniformly distributed in the second surface of bottom 10, solder joint 102 is uniformly distributed, can make the adhesion of welding between cover 20 and the bottom 10 forming be evenly distributed, improve the combination stability between bottom 10 and cover 20.
This positive electrode cap is applicable to all batteries that need to sealing type, can be applied to the battery of various structures, as secondary batteries such as the disposable batteries such as alkaline Mn cell or Ni-MH battery, nickel-cadmium cell and lithium batteries, introduces below with a concrete example.
A kind of cylindrical battery, adopts above-mentioned positive electrode cap packaged battery shell, and battery core and electrolyte are packaged in battery case.
The manufacture method of above-mentioned battery is:
Positive plate, negative plate and membrane coil are coiled into battery core, battery core is encased in cylindrical cell external case, for example box hat, then adds electrolyte, finally adopts above-mentioned positive electrode cap packaged battery shell, obtains cylindrical battery.
Positive plate comprises positive pole piece and is coated in the anode active material layer on positive pole piece, and the material of positive pole piece is to be applicable to the material of reeling, as copper or copper alloy.
Negative plate comprises negative pole core and is coated in the negative active core-shell material on negative pole core, and the material of negative pole core is to be applicable to the material of reeling, as copper or copper alloy.
Electrolyte can be selected LiPF
6or LiBF
4.
Above-mentioned battery, when after positive electrode cap packaged battery shell, the solder joint of positive electrode cap second surface is just sealed in battery case, the destroyed coating in institute solder joint is also positioned at battery container, be subject to the impact of environmental factor less, avoided the get rusty generation of phenomenon of solder joint place, so above-mentioned outside batteries coating is intact, the resting period is long.
The above embodiment has only expressed several execution mode of the present utility model, and it describes comparatively concrete and detailed, but can not therefore be interpreted as the restriction to the utility model the scope of the claims.It should be pointed out that for the person of ordinary skill of the art, without departing from the concept of the premise utility, can also make some distortion and improvement, these all belong to protection range of the present utility model.Therefore, the protection range of the utility model patent should be as the criterion with claims.
Claims (6)
1. a positive electrode cap, it is characterized in that, the cover that comprises bottom, be connected with described bottom and the explosion-proof ball between described bottom and described cover, described bottom has the first surface of close described cover and the second surface away from described cover, described bottom is fixed on described cover by solder joint, and described solder joint is positioned at the second surface of described bottom.
2. positive electrode cap according to claim 1, is characterized in that, the second surface of described bottom is provided with shrinkage pool, and the first surface of described bottom is provided with projection, and described shrinkage pool and described projection are oppositely arranged, and described solder joint is positioned at described shrinkage pool.
3. positive electrode cap according to claim 1, is characterized in that, the number of described solder joint is two or more, and described solder joint is uniformly distributed in the second surface of described bottom.
4. a battery, it is characterized in that, comprise battery case, encapsulate described battery case positive electrode cap, be packaged in battery core and the electrolyte of described battery case inside, cover and the explosion-proof ball between described bottom and described cover that positive electrode cap comprises bottom, is connected with described bottom, described bottom has the first surface of close described cover and the second surface away from described cover, described bottom is fixed on described cover by solder joint, and described solder joint is positioned at the second surface of described bottom.
5. battery according to claim 4, is characterized in that, the second surface of described bottom is provided with shrinkage pool, and the first surface of described bottom is provided with projection, and described shrinkage pool and described projection are oppositely arranged, and described solder joint is positioned at described shrinkage pool.
6. battery according to claim 4, is characterized in that, the number of described solder joint is two or more, and described solder joint is uniformly distributed in the second surface of described bottom.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320654016.5U CN203589091U (en) | 2013-10-22 | 2013-10-22 | Positive cap and battery |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320654016.5U CN203589091U (en) | 2013-10-22 | 2013-10-22 | Positive cap and battery |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203589091U true CN203589091U (en) | 2014-05-07 |
Family
ID=50586955
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320654016.5U Expired - Lifetime CN203589091U (en) | 2013-10-22 | 2013-10-22 | Positive cap and battery |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203589091U (en) |
-
2013
- 2013-10-22 CN CN201320654016.5U patent/CN203589091U/en not_active Expired - Lifetime
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CP03 | Change of name, title or address | ||
| CP03 | Change of name, title or address |
Address after: 518111 Building 1, 68 Xinxia Avenue, Pinghu street, Longgang District, Shenzhen City, Guangdong Province Patentee after: Shenzhen haopeng Technology Co.,Ltd. Patentee after: SPRINGPOWER TECHNOLOGY (SHENZHEN) Co.,Ltd. Patentee after: Icon Energy System(ShenZhen)Co.,Ltd Patentee after: HIGHPOWER TECHNOLOGY (HUIZHOU) Co.,Ltd. Address before: 518000 Building 1, No. 68, Xinxia Avenue, Pinghu street, Longgang District, Shenzhen City, Guangdong Province Patentee before: SHENZHEN HIGHPOWER TECHNOLOGY Co.,Ltd. Patentee before: SPRINGPOWER TECHNOLOGY (SHENZHEN) Co.,Ltd. Patentee before: Icon Energy System(ShenZhen)Co.,Ltd Patentee before: HIGHPOWER TECHNOLOGY (HUIZHOU) Co.,Ltd. |
|
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20140507 |