CN112909389A - Horizontal laminated battery cover plate and lithium battery thereof - Google Patents
Horizontal laminated battery cover plate and lithium battery thereof Download PDFInfo
- Publication number
- CN112909389A CN112909389A CN202110293741.3A CN202110293741A CN112909389A CN 112909389 A CN112909389 A CN 112909389A CN 202110293741 A CN202110293741 A CN 202110293741A CN 112909389 A CN112909389 A CN 112909389A
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- cover plate
- battery
- main body
- safety valve
- plate main
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/05—Accumulators with non-aqueous electrolyte
- H01M10/052—Li-accumulators
-
- 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 invention relates to the field of new energy lithium battery manufacturing, in particular to a horizontal laminated battery cover plate and a lithium battery thereof. The horizontal laminated battery comprises a positive cover plate, an aluminum shell, a battery cell and a negative cover plate. Wherein the aluminum hull is both ends hollow structure, and anodal apron welds at the both ends of aluminum hull with the negative pole apron, and utmost point post increases the phenomenon emergence that the rivet structure can avoid the lithium cell to take place the short circuit when filling soon on the apron on the phenomenon take place. The positive pole and the negative pole are arranged at two ends of the battery, so that the flow area of the battery is increased, and the capacity of the battery is improved. The safety valve adopts sealed nail welding for the steel sheet, and steel sheet preparation technology is simpler, and the apron main part adopts the stair structure, can the full weld side position, effectively improves the security performance of battery, has guaranteed welded efficiency, avoids appearing the rosin joint phenomenon.
Description
Technical Field
The invention relates to the field of new energy lithium battery manufacturing, in particular to a horizontal laminated battery cover plate and a lithium battery thereof.
Background
The power battery is the development direction of new energy automobiles and energy storage power stations, so the safety of the battery is of great importance. The battery cover plate is used as an important component of the power battery and determines the sealing performance and the insulating performance of the power battery. The lithium battery cover plate of present volume production avoids the material extravagant, and the battery cover plate size is the same with the aluminum hull, can cause the welding mouth rosin joint of battery cover plate and aluminum hull to be more when the welding, and also can appear the phenomenon of deep-fry welding. All must set up utmost point post device for the battery apron, among the prior art, because utmost point post, connection piece and apron are connected firmly inadequately, when the battery fills soon or overcharges, very easily appear the battery short circuit, catch fire, the phenomenon of explosion when serious, in the manufacturing and the use of battery, it is not comprehensive enough to the security performance protection of battery. And the positive and negative poles of the lithium battery cover plate are arranged on the same side, so that the capacity is difficult to be fully exerted when the electric core passes through the current, the first effect of the battery is easy to be lower, and the capacity is lower than the set capacity, thereby causing a large amount of defective products.
Disclosure of Invention
In light of the problems noted in the background, the present invention provides a horizontal laminated battery cover plate and associated battery structure, which will be further described below.
Horizontal lamination battery apron, its characterized in that: the rivet fixing device comprises a rivet 1, a pole post 2, an insulating pad 3, a cover plate main body 4, a switching sheet 5 and a rivet fixing block 6, wherein the rivet 1 is connected with the pole post 2, the pole post 2 is connected with the insulating sheet 3, the insulating sheet 3 is connected with the cover plate main body 4, two ends of the cover plate main body 4 are of stepped structures, a safety valve 7 or a liquid injection hole 8 is arranged on the cover plate main body 4, the other surface of the cover plate main body 4 is connected with the switching sheet 5, and the rivet 1, the pole post 2, the insulating pad 3, the cover plate main body 4 and;
the positive cover plate 9 and the negative cover plate 10 are both of the above structure, the safety valve 7 and the liquid injection hole 8 can be optionally arranged on the cover plate main body 4 of the positive cover plate 9 or the negative cover plate 10, and the safety valve 7 and the liquid injection hole 8 are not arranged on the same cover plate main body 4.
Furthermore, two ends of the cover plate main body 4 are of a step structure, and the length of the protruding part 13 is 1-2 mm;
further, the liquid injection hole 8 is internally provided with threads, and is sealed by a screw with threads after liquid injection is finished;
further, the safety valve 9 is made of a steel sheet material, the thickness of the safety valve is 0.3-1mm, and the safety valve is welded by adopting a sealing nail;
the utility model provides a lithium battery, its structure includes anodal apron 9, negative pole apron 10, aluminum hull 11 and electric core 12, and aluminum hull 11 is both ends hollow structure, and anodal apron 9, negative pole apron 10 weld in the both ends of aluminum hull 11, and anodal apron 9, the structure of negative pole apron 10 are the same with above-mentioned apron structure.
Has the advantages that: compared with the prior art, the invention can improve the firmness of the post, the cover plate and the connecting sheet by additionally arranging the rivet on the cover plate post. The positive and negative electrode cover plates are arranged at the two ends of the battery, so that the positive and negative electrode posts can increase the current flowing area at the two ends of the battery, and the capacity exertion of the battery is improved. The apron main part adopts the stair structure, can carry out the full weld side position with the aluminum hull, has guaranteed welded efficiency, has avoided the problem of rosin joint to exist. The steel sheet is selected as the safety valve and welded by the sealing nails, and compared with the existing lithium battery safety valve, the steel sheet is simpler to process, so that the safety performance of the battery can be more effectively protected while the manufacturing process of the battery cover plate is simplified.
Drawings
FIG. 1: the invention discloses a structural schematic diagram of a horizontal laminated battery cover plate;
FIG. 2: the invention discloses a top view of a horizontal laminated battery cover plate;
FIG. 3: the invention discloses a structural schematic diagram of a horizontal laminated battery.
In the figure: rivet 1, utmost point post 2, insulating pad 3, apron main part 4, switching piece 5, rivet fixed block 6, relief valve 7, notes liquid hole 8, anodal apron 9, negative pole apron 10, aluminum hull 11, electric core 12, salient position 13.
Detailed Description
Specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings, and all of the technical features or connections of the present invention that are not described in detail are prior art.
Example 1
Horizontal laminated battery cover plate: the positive cover plate and the negative cover plate have the same structure; the rivet, the polar column, the insulating pad, the cover plate main body, the adapter sheet and the rivet fixing block are sequentially fixed by the rivet fixing block;
the safety valve and the liquid injection hole can be optionally arranged on the cover plate main body of the anode cover plate or the cathode cover plate, and the safety valve and the liquid injection hole are not arranged on the cover plate main body of the same cover plate.
Wherein, the two ends of the cover plate main body are of step structures, and the length of the protruding part is 1 mm;
wherein, the liquid injection hole is internally provided with threads and is locked by a screw after the liquid injection is finished;
wherein the safety valve is made of a steel sheet material, the thickness of the safety valve is 0.3mm, and the safety valve is welded by adopting a sealing nail;
lithium battery: and (3) putting the pole piece (theoretical value is 60Ah) of the laminated lithium battery into an aluminum shell, and respectively welding the positive cover plate and the negative cover plate at two ends of the aluminum shell to obtain the finished lithium battery.
Example 2
Horizontal laminated battery cover plate: in the structure, two ends of the cover plate main body are of step structures, the length of the protruding part is 1.5mm, and the thickness of the safety valve is 0.6 mm;
the other structures are the same as those of embodiment 1, and are not described herein again, so as to obtain a finished lithium battery.
Example 3
Horizontal laminated battery cover plate: in the structure, two ends of the cover plate main body are of step structures, the length of the protruding part is 2mm, and the thickness of the safety valve is 1 mm;
the other structures are the same as those of embodiment 1, and are not described herein again, so as to obtain a finished lithium battery.
Comparative example 1
Horizontal laminated battery cover plate: the structure of the lithium battery cover plate is the same as that of the traditional lithium battery cover plate, namely the lithium battery cover plate comprises the following components; the safety valve comprises a pole column, an insulating pad, a cover plate main body and an adapter sheet, wherein the pole column is connected with an insulating sheet, the insulating sheet is connected with the cover plate main body, the safety valve and a liquid injection hole are arranged on the cover plate main body, the adapter sheet is connected to the other side of the cover plate main body, and the pole column, the insulating pad, the cover plate main body and the adapter sheet are fixed in sequence;
the safety valve is of a traditional aluminum sheet structure, the cover plate main body is the same as the aluminum shell in width, and the aluminum shell is of a structure with one closed end.
Lithium battery: and (3) putting the laminated battery pole piece (theoretical value is 60Ah) into an aluminum shell, and welding a cover plate on the aluminum shell to obtain the finished lithium battery.
Respectively manufacturing 50 lithium batteries by adopting the structures of the embodiments 1-3 and the comparative example according to the same process, injecting, sealing, forming and grading the obtained lithium batteries, and comparing the welding failure number and the first-effect average value of the finished lithium batteries, wherein the results are as follows:
the analysis table shows that the welding failure phenomenon does not occur in the embodiment, and the welding efficiency is ensured and the problem of insufficient solder is avoided due to the full-welding side position in the lithium battery manufacturing process. In the aspect of first effect exertion, compared with a comparative example, the embodiment has better first effect exertion, can obtain the overcurrent area of the positive and negative poles at two ends of the battery, which can increase the current, and improves the capacity exertion of the battery.
The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (5)
1. The utility model provides a horizontal lamination battery apron which characterized in that: the improved structure of the electric connector comprises a rivet (1), a pole (2), an insulating pad (3), a cover plate main body (4), a switching sheet (5) and a rivet fixing block (6), wherein the rivet (1) is connected with the pole (2), the pole (2) is connected with the insulating sheet (3), the insulating sheet (3) is connected with the cover plate main body (4), two ends of the cover plate main body (4) are of a step structure, a safety valve (7) or a liquid injection hole (8) is arranged on the cover plate main body (4), the switching sheet (5) is connected with the other surface of the cover plate main body (4), and the rivet fixing block (6) fixes the rivet (1), the pole (2), the insulating pad (3), the cover plate main body (4) and the switching sheet (5) in sequence;
the positive cover plate (9) and the negative cover plate (10) are both in the structure, the safety valve (7) and the liquid injection hole (8) can be optionally arranged on the cover plate main body (4) of the positive cover plate (9) or the negative cover plate (10), and the safety valve (7) and the liquid injection hole (8) are not arranged on the same cover plate main body (4).
2. The horizontal laminated battery cover plate of claim 1, wherein: the two ends of the cover plate main body (4) are of step structures, and the length of a protruding part (13) of the cover plate main body is 1-2 mm.
3. The horizontal laminated battery cover plate of claim 1, wherein: and threads are arranged in the liquid injection hole (8), and the liquid injection hole is sealed by a threaded screw after liquid injection is finished.
4. The horizontal laminated battery cover plate of claim 1, wherein: the safety valve (9) is made of a steel sheet material, the thickness of the safety valve is 0.3-1mm, and the safety valve is welded by adopting a sealing nail.
5. A lithium battery, characterized in that: the structure of the battery comprises the positive cover plate (9), the negative cover plate (10), an aluminum shell (11) and a battery cell (12), wherein the aluminum shell (11) is of a hollow structure with two ends, the positive cover plate (9) and the negative cover plate (10) are welded at two ends of the aluminum shell (11), and the positive cover plate (9) and the negative cover plate (10) adopt any cover plate structure in claims 1-4.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110293741.3A CN112909389A (en) | 2021-03-19 | 2021-03-19 | Horizontal laminated battery cover plate and lithium battery thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110293741.3A CN112909389A (en) | 2021-03-19 | 2021-03-19 | Horizontal laminated battery cover plate and lithium battery thereof |
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| Publication Number | Publication Date |
|---|---|
| CN112909389A true CN112909389A (en) | 2021-06-04 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110293741.3A Pending CN112909389A (en) | 2021-03-19 | 2021-03-19 | Horizontal laminated battery cover plate and lithium battery thereof |
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| CN (1) | CN112909389A (en) |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101345293A (en) * | 2008-08-20 | 2009-01-14 | 苏州星恒电源有限公司 | Lithium ion battery with aluminum case |
| CN201338174Y (en) * | 2008-12-12 | 2009-11-04 | 天津力神电池股份有限公司 | Large capacity battery safety valve welding positioning technical equipment |
| CN202120990U (en) * | 2011-06-29 | 2012-01-18 | 上海航天电源技术有限责任公司 | Safety corrosion-resistant aluminum shell |
| WO2014015451A1 (en) * | 2012-07-24 | 2014-01-30 | 上海航天电源技术有限责任公司 | Fully-sealed corrosion-resistant integrally welded lithium ion battery |
| CN204632872U (en) * | 2015-06-12 | 2015-09-09 | 浙江中泽电气有限公司 | A kind of large multiplying power lithium battery structure |
| CN205666257U (en) * | 2016-05-27 | 2016-10-26 | 杜福宙 | Utmost point post riveting flexible connecting piece's lithium ion battery cover plate |
| CN210167391U (en) * | 2019-03-11 | 2020-03-20 | 合肥国轩高科动力能源有限公司 | Sealing washer and electricity core top cap |
| CN215644689U (en) * | 2021-03-19 | 2022-01-25 | 江西安驰新能源科技有限公司 | Horizontal laminated battery cover plate and lithium battery thereof |
-
2021
- 2021-03-19 CN CN202110293741.3A patent/CN112909389A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101345293A (en) * | 2008-08-20 | 2009-01-14 | 苏州星恒电源有限公司 | Lithium ion battery with aluminum case |
| CN201338174Y (en) * | 2008-12-12 | 2009-11-04 | 天津力神电池股份有限公司 | Large capacity battery safety valve welding positioning technical equipment |
| CN202120990U (en) * | 2011-06-29 | 2012-01-18 | 上海航天电源技术有限责任公司 | Safety corrosion-resistant aluminum shell |
| WO2014015451A1 (en) * | 2012-07-24 | 2014-01-30 | 上海航天电源技术有限责任公司 | Fully-sealed corrosion-resistant integrally welded lithium ion battery |
| CN204632872U (en) * | 2015-06-12 | 2015-09-09 | 浙江中泽电气有限公司 | A kind of large multiplying power lithium battery structure |
| CN205666257U (en) * | 2016-05-27 | 2016-10-26 | 杜福宙 | Utmost point post riveting flexible connecting piece's lithium ion battery cover plate |
| CN210167391U (en) * | 2019-03-11 | 2020-03-20 | 合肥国轩高科动力能源有限公司 | Sealing washer and electricity core top cap |
| CN215644689U (en) * | 2021-03-19 | 2022-01-25 | 江西安驰新能源科技有限公司 | Horizontal laminated battery cover plate and lithium battery thereof |
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