CN203406360U - Cover plate structure for square aluminium-shell lithium ion battery - Google Patents
Cover plate structure for square aluminium-shell lithium ion battery Download PDFInfo
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- CN203406360U CN203406360U CN201320367501.4U CN201320367501U CN203406360U CN 203406360 U CN203406360 U CN 203406360U CN 201320367501 U CN201320367501 U CN 201320367501U CN 203406360 U CN203406360 U CN 203406360U
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- cover plate
- positive
- plate structure
- negative
- lithium ion
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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
Abstract
The utility model provides a cover plate structure for a square aluminium-shell lithium ion battery. The cover plate structure comprises a positive post, a negative post, an aluminium cover plate, rivets, a positive connecting piece, a negative connecting pipe, an insulating layer and an explosion-proof valve, wherein the aluminium cover plate is provided with a liquid filling hole and an air exhausting hole. The cover plate structure provided by the utility model is characterized in that when a pole group of an electric core is connected to the cover plate, a positive lug and a negative lug of the pole group are directly connected onto the positive connecting piece and the negative connecting piece by a connection mode of ultrasonic welding, respectively. The cover plate structure provided by the utility model has the advantages that the design is reasonable, the structure is simple, the performance of a product is guaranteed and the operability of product manufacture is greatly improved. Therefore, the cover plate structure provided by the utility model has very high practical value and market prospect, and especially has wide application space in the fields of aluminium-shell energy storage batteries and power batteries with large capacity.
Description
Technical field
The utility model relates to a kind of covering plate structure for shell with square aluminum lithium ion battery ultrasonic bond technique, for shell with square aluminum power type coiling or lamination and utmost point group's positive and negative lug and battery plus-negative plate all in the making of the lithium ion battery of same one end.
Background technology
At present in lithium ion battery with aluminum shell production field power-type lithium ion battery field particularly, the technology that most of producers all adopt lamination or multi pole ears to reel, at jumbo electrokinetic cell steel aluminum hull or mould shell field particularly, how to adopt simple and reliable lug interconnection technique is an industry difficult problem always, because high capacity cell general thickness is all larger, lug quantity is also many, substantially all there is the problem that in connection procedure, lug stretching is long or the interior utmost point group of battery is outside and interpole ear difference in length is excessive in the current scheme adopting in the industry, these reasons all will cause the formation of inside battery differentiation, thereby cause inconsistent between the inner different pole pieces of battery core, fundamentally affect the consistency in battery volume production process.
Summary of the invention
The purpose of this utility model is to provide a kind of covering plate structure for shell with square aluminum lithium ion battery, to overcome the problem of the battery core internal consistency existing in background technology.For this reason, the utility model is by the following technical solutions:
For a covering plate structure for shell with square aluminum lithium ion battery, comprise positive terminal, negative terminal, Aluminum cover, rivet, positive strap, negative pole brace, insulating barrier, explosion-proof valve, liquid injection hole, steam vent are set on Aluminum cover; It is characterized in that: when the utmost point group of battery core is connected to cover plate, directly by utmost point group's positive and negative lug, the connected mode by ultra-sonic welded is connected to respectively on positive strap and negative pole brace.
Owing to adopting technique scheme, the utility model has been taken into account the required conductive capability of large-sized power battery and the operability of manufacturing process.The utility model is by the design that brace is separated, making the lug of utmost point group in operation process can be divided into equably two falls to being separately fixed on brace, so both can avoid lug in operation process to be stretched by transition, also can reduce the length difference of utmost point group outermost layer lug and intermediate layer lug, thereby reduce battery core internal diversity, promote consistency.On the other hand, electrokinetic cell has the advantages that capacity is large, electric current is large, and in lug junction, easily produce caloric value large, dispel the heat bad, thereby cause safety issue and battery performance variation.And the utility model is by above-mentioned structure cleverly, greatly reduce the difficulty of welding, reduced the performance requirement to ultrasonic welding system, that the reliability that is simultaneously also conducive to improve weld job has is simple to operate, efficiency is high, reliability is high, overcurrent capability is strong and the advantage such as good heat dissipation effect.
The utility model is reasonable in design, simple in structure, when ensureing properties of product, has greatly improved the operability of production.Therefore the utlity model has very high practical value and market prospects, especially in jumbo aluminum hull energy-storage battery, electrokinetic cell field, have a wide range of applications space.
Adopting on the basis of technique scheme, the utility model also can adopt following further technical scheme:
Positive terminal, negative terminal adopt respectively 4 rivets and positive strap and negative pole brace to link together, and guarantee the reliability and the electric conductivity that connect.
Positive strap and negative pole brace be thick brace and the ultra-sonic welded screening glass formation that thickness is 0.05 ~ 0.2mm at 0.4 ~ 2.0mm by a thickness, and such structure both can guarantee that operation and effect that good large electric current is also conducive to ultra-sonic welded by performance guaranteed.
In ultra-sonic welded operation process, the base of ultrasonic bonder stretches between two braces, and utmost point group's lug inserts between thick brace and ultra-sonic welded screening glass and compresses, and the soldering tip of welding machine is pushed down welding protection sheet and carried out ultra-sonic welded operation.
Positive terminal, negative terminal and positive strap and negative pole brace are fixed on Aluminum cover by rivet, between Aluminum cover and positive terminal, negative terminal, positive strap, negative pole brace and rivet, with insulating barrier, separate; Guarantee to insulate between pole and Aluminum cover.
Accompanying drawing explanation
Fig. 1 is structure cutaway view of the present utility model.
Fig. 2 is vertical view of the present utility model.
Fig. 3 is left view of the present utility model.
Embodiment
The utility model relates to a kind of covering plate structure for shell with square aluminum lithium ion battery, for shell with square aluminum power type coiling or lamination and utmost point group's positive and negative lug and battery plus-negative plate all in the making of the lithium ion battery of same one end.
With reference to accompanying drawing.Covering plate structure provided by the utility model, comprises positive terminal 11, negative terminal 12, Aluminum cover 2, rivet 3, positive strap 4, negative pole brace 5, insulating barrier 6, explosion-proof valve 7, and liquid injection hole 8, steam vent 9 are set on Aluminum cover 2; When the utmost point group of battery core is connected to cover plate, directly by utmost point group's positive and negative lug, the connected mode by ultra-sonic welded is connected to respectively on positive strap 4 and negative pole brace 5, fulfils assignment.
In ultra-sonic welded operation process; the base of ultrasonic bonder stretches between two positive straps 4 or between two negative pole braces 5; utmost point group's lug inserts between thick brace 22 and ultra-sonic welded screening glass 21 and compresses, and the soldering tip of welding machine is pushed down welding protection sheet and carried out ultra-sonic welded operation.
Claims (5)
1. the covering plate structure for shell with square aluminum lithium ion battery, comprise positive terminal (11), negative terminal (12), Aluminum cover (2), rivet (3), positive strap (4), negative pole brace (5), insulating barrier (6), explosion-proof valve (7), liquid injection hole (8), steam vent (9) are set on Aluminum cover (2); It is characterized in that: when the utmost point group of battery core is connected to cover plate, directly by utmost point group's positive and negative lug, the connected mode by ultra-sonic welded is connected to respectively on positive strap (4) and negative pole brace (5).
2. a kind of covering plate structure for shell with square aluminum lithium ion battery as claimed in claim 1, is characterized in that positive terminal (11), negative terminal (12) adopt respectively 4 rivets (3) and positive strap (4) and negative pole brace (5) to link together.
3. a kind of covering plate structure for shell with square aluminum lithium ion battery as claimed in claim 1, is characterized in that the ultra-sonic welded screening glass (21) that positive strap (4) and negative pole brace (5) are 0.05 ~ 0.2mm by a thickness at the thick brace (22) of 0.4 ~ 2.0mm and a thickness forms.
4. a kind of covering plate structure for shell with square aluminum lithium ion battery as claimed in claim 3, is characterized in that utmost point group's lug inserts between thick brace (22) and ultra-sonic welded screening glass (21) and compresses.
5. a kind of covering plate structure for shell with square aluminum lithium ion battery as described in right 1,2,3 or 4, it is characterized in that positive terminal (11), negative terminal (12) are fixed on Aluminum cover (2) above with positive strap (4) and negative pole brace (5) by rivet (3), separate with insulating barrier (6) between Aluminum cover (2) and positive terminal (11), negative terminal (12), positive strap (4), negative pole brace (5) and rivet (3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320367501.4U CN203406360U (en) | 2013-06-24 | 2013-06-24 | Cover plate structure for square aluminium-shell lithium ion battery |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320367501.4U CN203406360U (en) | 2013-06-24 | 2013-06-24 | Cover plate structure for square aluminium-shell lithium ion battery |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203406360U true CN203406360U (en) | 2014-01-22 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320367501.4U Expired - Lifetime CN203406360U (en) | 2013-06-24 | 2013-06-24 | Cover plate structure for square aluminium-shell lithium ion battery |
Country Status (1)
| Country | Link |
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| CN (1) | CN203406360U (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105870364A (en) * | 2016-04-28 | 2016-08-17 | 常熟高嘉能源科技有限公司 | Negative electrode lithium battery cover plate |
| CN106025342A (en) * | 2016-06-30 | 2016-10-12 | 中天储能科技有限公司 | Low-cost aluminum-structured lithium ion battery |
| CN106025112A (en) * | 2016-04-28 | 2016-10-12 | 常熟高嘉能源科技有限公司 | Positive electrode lithium battery cover plate |
| CN107204407A (en) * | 2017-06-05 | 2017-09-26 | 山东衡远新能源科技有限公司 | A kind of lithium-ion battery shell |
| CN107342440A (en) * | 2017-06-26 | 2017-11-10 | 合肥国轩高科动力能源有限公司 | A kind of high-power lithium ion battery core and preparation method thereof |
| CN109148806A (en) * | 2018-07-18 | 2019-01-04 | 湖北锂诺新能源科技有限公司 | The cell polar ear and top cover connection method and connection structure of power battery |
| US11757123B2 (en) | 2017-08-30 | 2023-09-12 | Contemporary Amperex Technology Co., Limited | Cap assembly for a secondary battery and secondary battery |
-
2013
- 2013-06-24 CN CN201320367501.4U patent/CN203406360U/en not_active Expired - Lifetime
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105870364A (en) * | 2016-04-28 | 2016-08-17 | 常熟高嘉能源科技有限公司 | Negative electrode lithium battery cover plate |
| CN106025112A (en) * | 2016-04-28 | 2016-10-12 | 常熟高嘉能源科技有限公司 | Positive electrode lithium battery cover plate |
| CN106025342A (en) * | 2016-06-30 | 2016-10-12 | 中天储能科技有限公司 | Low-cost aluminum-structured lithium ion battery |
| CN107204407A (en) * | 2017-06-05 | 2017-09-26 | 山东衡远新能源科技有限公司 | A kind of lithium-ion battery shell |
| CN107342440A (en) * | 2017-06-26 | 2017-11-10 | 合肥国轩高科动力能源有限公司 | A kind of high-power lithium ion battery core and preparation method thereof |
| US11757123B2 (en) | 2017-08-30 | 2023-09-12 | Contemporary Amperex Technology Co., Limited | Cap assembly for a secondary battery and secondary battery |
| CN109148806A (en) * | 2018-07-18 | 2019-01-04 | 湖北锂诺新能源科技有限公司 | The cell polar ear and top cover connection method and connection structure of power battery |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20140122 |
|
| CX01 | Expiry of patent term |