CN112531294A - Soft package lithium ion battery tab connecting piece and connecting method - Google Patents
Soft package lithium ion battery tab connecting piece and connecting method Download PDFInfo
- Publication number
- CN112531294A CN112531294A CN202011521780.6A CN202011521780A CN112531294A CN 112531294 A CN112531294 A CN 112531294A CN 202011521780 A CN202011521780 A CN 202011521780A CN 112531294 A CN112531294 A CN 112531294A
- Authority
- CN
- China
- Prior art keywords
- piece
- connecting piece
- round hole
- lithium ion
- ion battery
- 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.)
- Pending
Links
- HBBGRARXTFLTSG-UHFFFAOYSA-N Lithium ion Chemical compound [Li+] HBBGRARXTFLTSG-UHFFFAOYSA-N 0.000 title claims abstract description 30
- 229910001416 lithium ion Inorganic materials 0.000 title claims abstract description 30
- 238000000034 method Methods 0.000 title claims abstract description 16
- 230000006835 compression Effects 0.000 claims abstract description 6
- 238000007906 compression Methods 0.000 claims abstract description 6
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 8
- 239000010949 copper Substances 0.000 claims description 8
- 229910052802 copper Inorganic materials 0.000 claims description 8
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 7
- 229910052782 aluminium Inorganic materials 0.000 claims description 7
- 229910000838 Al alloy Inorganic materials 0.000 claims description 6
- JRBRVDCKNXZZGH-UHFFFAOYSA-N alumane;copper Chemical compound [AlH3].[Cu] JRBRVDCKNXZZGH-UHFFFAOYSA-N 0.000 claims description 6
- 230000000149 penetrating effect Effects 0.000 claims description 4
- 238000004519 manufacturing process Methods 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 102100023170 Nuclear receptor subfamily 1 group D member 1 Human genes 0.000 description 2
- 238000002788 crimping Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000003466 welding Methods 0.000 description 2
- NPXOKRUENSOPAO-UHFFFAOYSA-N Raney nickel Chemical compound [Al].[Ni] NPXOKRUENSOPAO-UHFFFAOYSA-N 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- 239000004411 aluminium Substances 0.000 description 1
- 238000005538 encapsulation Methods 0.000 description 1
- 238000004146 energy storage Methods 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 238000012856 packing Methods 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
Images
Classifications
-
- 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
- H01M10/0525—Rocking-chair batteries, i.e. batteries with lithium insertion or intercalation in both electrodes; Lithium-ion batteries
-
- 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 is suitable for the technical field of lithium ion batteries, and provides a soft-package lithium ion battery tab connecting piece and a connecting method. The connecting piece is fixedly connected with the lug in a compression joint mode, the connecting piece has the advantages of small occupied space and light weight, the connecting piece is firmly connected with the lug, the reliability is good, and the connecting piece cannot be loosened in the using process.
Description
Technical Field
The invention belongs to the technical field of lithium ion batteries, and particularly relates to a soft-package lithium ion battery tab connecting piece and a connecting method.
Background
Soft package lithium ion battery obtains a large amount of applications in electric automobile and electric power energy storage field because light in weight, size are easily changed, but because its casing is softer, often need a large amount of auxiliary support materials can guarantee the performance's of its performance when battery packing, encapsulation and assembly. In addition, soft packet of lithium ion battery's utmost point ear connected mode is including adopting the switching aluminium nickel utmost point ear to weld on the copper bar firmly, through the bolt fastening on the copper bar firmly, adopts and moulds the frame structure with utmost point ear welding at moulding the frame top, perhaps, packs into electric core and welds utmost point post again in aluminium hull or the steel casing, but these modes all can bring a lot of troubles, not only production efficiency is low, it is not hard up easily, the reliability is poor, and weight is big moreover, occupation space is many.
Patent "a soft package lithium ion battery module for electric motor car" with application number CN201410386319.2 adopts two at least soft package lithium ion battery unit along vertical direction superpose and pass through fastening bolt fixed mounting between bottom plate and upper cover, constitutes soft package lithium ion battery module, nevertheless can increase the whole weight of module.
Patent "soft packet of lithium ion battery module and electric automobile" with application number CN201810142053.5 installs the clamp plate on utmost point ear, and the clamp plate compresses tightly busbar and utmost point ear through the bolt, but bolted connection mode is not hard up because of the vibration easily in long-term use, and then brings the potential safety hazard.
Disclosure of Invention
The invention provides a soft package lithium ion battery tab connecting piece and a connecting method, and aims to solve the technical problem.
The invention is realized in such a way that the soft package lithium ion battery tab connecting piece comprises a connecting band and connecting pieces, wherein a plurality of connecting pieces are connected to the surface of the connecting band along the length direction, the connecting pieces are arranged in pairs, each pair of connecting pieces comprises a sub-connecting piece and a main connecting piece, one side of the sub-connecting piece is connected with one side of the main connecting piece, the side of the sub-connecting piece is connected with the surface of the connecting band, a plurality of bosses are arranged along the other side of the sub-connecting piece, a plurality of first round holes are arranged along the other side of the main connecting piece, and the diameter of each first round hole is slightly smaller than the diameter of.
Further, the connecting band is made of copper, aluminum or copper aluminum alloy.
Furthermore, the connecting sheet is made of copper, aluminum or copper-aluminum alloy.
Furthermore, the connecting belt and the connecting sheet are welded by laser or riveted by machinery.
The invention also provides a soft package lithium ion battery tab connecting method, which uses the tab connecting piece and comprises the following steps:
a plurality of second round holes are formed in the length direction of the lug, and the diameter of each second round hole is slightly smaller than that of the front end of the boss;
penetrating the boss on the sub-connecting piece through the second round hole and performing interference fit with the second round hole;
the front end of the boss penetrating through the second round hole penetrates through the first round hole in the female connecting piece and is in interference fit with the first round hole;
and the boss and the first round hole are fixed in a compression joint mode.
The soft package lithium ion battery tab connecting piece and the connecting method provided by the invention are fixed with the tab in a compression joint mode through the connecting piece, the connecting piece has the advantages of small occupied space and light weight, the connecting piece and the tab are firmly connected, the reliability is good, and the connecting piece cannot be loosened in the using process.
Drawings
Fig. 1 is a schematic structural diagram of a soft package lithium ion battery tab connector provided in an embodiment of the present invention;
fig. 2 is a schematic diagram illustrating connection and crimping of a soft-package lithium ion battery tab connector and a tab provided by an embodiment of the present invention;
fig. 3 is a flowchart of a method for connecting a tab of a soft-package lithium ion battery according to an embodiment of the present invention.
The reference numbers in the figures denote: 1-pole lug, 2-connecting band, 3-sub-connecting band, 4-mother connecting band, 5-lug boss, 6-first round hole, 7-second round hole.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
Referring to fig. 1-2, the embodiment of the invention provides a soft-package lithium ion battery tab connecting piece, which comprises a connecting band 2 and a connecting piece. The connecting band 2 is a strip-shaped rectangular structure, the connecting piece is a sheet-shaped rectangular structure, the material of the connecting band 2 can be copper, aluminum or copper-aluminum alloy, and correspondingly, the material of the connecting piece is copper, aluminum or copper-aluminum alloy.
The surface along the length direction of connecting band 2 is connected with a plurality of connection pieces, and the connection piece sets up in pairs. The connecting position of the connecting sheet on the connecting belt 2 is determined according to the cell thickness of the soft-package lithium ion battery, and the connecting sheet can clamp the tab 1 on two sides of the tab 1.
Each pair of connecting pieces comprises a sub-connecting piece 3 and a main connecting piece 4, one side of the sub-connecting piece 3 and one side of the main connecting piece 4 are connected, and the side is connected with the surface of the connecting belt 2. The connecting process of the connecting band 2 and the connecting piece can adopt laser welding or mechanical riveting.
Be provided with a plurality of bosss 5 along the another side of sub-connection piece 3, be provided with a plurality of first round holes 6 along the another side of female connection piece 4, the diameter of first round hole 6 slightly is less than the front end diameter of boss 5. Boss 5 at the front end of sub-connecting piece 3 and first round hole 6 interference fit at the front end of main connecting piece 4, boss 5 passes first round hole 6, can realize stable connection, and follow-up mode of reusing crimping to fix is pressed from both sides utmost point ear 1 tight fixedly.
Referring to fig. 3, an embodiment of the present invention provides a method for connecting a tab of a soft-package lithium ion battery, where the method for connecting the tab of the soft-package lithium ion battery includes:
s1: a plurality of second round holes 7 are formed along the length direction of the lug 1, and the diameter of each second round hole 7 is slightly smaller than the diameter of the front end of the boss 5.
The round hole is also opened to utmost point ear 1, and the diameter of second round hole 7 slightly is less than the front end diameter of boss 1, and the boss 1 of being convenient for passes second round hole 7 and with second round hole 7 interference fit.
S2: and the boss 5 on the sub-connecting piece 3 passes through the second round hole 7 and is in interference fit with the second round hole 7.
S3: the front end of the boss 5 passing through the second round hole 7 passes through the first round hole 6 on the female connecting piece 4 and is in interference fit with the first round hole 6.
S4: the fixed boss 5 and the first round hole 6 are pressed and connected.
After the lug boss 5 passes through the second round hole 7 on the lug 1 and the first round hole 6 on the female connecting piece 4, the male connecting piece 3, the lug 1 and the female connecting piece 4 are fixedly connected in a compression joint mode.
In conclusion, the soft-package lithium ion battery tab connecting piece and the connecting method provided by the invention are fixed with the tab in a compression joint mode through the connecting piece, the connecting piece has the advantages of small occupied space and light weight, the connecting piece and the tab are firmly connected, the reliability is good, the connecting piece cannot loosen in the using process, each single battery cell does not need to be fixed by an outer frame when the connecting piece is used for manufacturing a soft-package lithium ion battery module, only the whole module needs to be fixed, and the production efficiency can be effectively improved.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents and improvements made within the spirit and principle of the present invention are intended to be included within the scope of the present invention.
Claims (5)
1. The utility model provides a soft packet of lithium ion battery utmost point ear connecting piece, its characterized in that includes connecting band and connection piece, follows the length direction's of connecting band surface is connected with a plurality of connection pieces, the connection piece sets up in pairs, and every includes a subconnector piece and a female connection piece to the connection piece, one side of subconnector piece and female connection piece is connected and this limit with the surface connection of connecting band follows the another side of subconnector piece is provided with a plurality of bosss, follows the another side of female connection piece is provided with a plurality of first round holes, the diameter of first round hole slightly is less than the front end diameter of boss.
2. The soft-package lithium ion battery tab connector as claimed in claim 1, wherein the connecting band is made of copper, aluminum or copper aluminum alloy.
3. The soft-package lithium ion battery tab connector as claimed in claim 2, wherein the connecting sheet is made of copper, aluminum or copper aluminum alloy.
4. The soft-package lithium ion battery tab connecting piece according to claim 1, wherein the connecting band and the connecting piece are welded by laser or riveted by machinery.
5. A method for connecting a soft package lithium ion battery tab is characterized in that the tab connecting piece of any one of claims 1-4 is used, and comprises the following steps:
a plurality of second round holes are formed in the length direction of the lug, and the diameter of each second round hole is slightly smaller than that of the front end of the boss;
penetrating the boss on the sub-connecting piece through the second round hole and performing interference fit with the second round hole;
the front end of the boss penetrating through the second round hole penetrates through the first round hole in the female connecting piece and is in interference fit with the first round hole;
and the boss and the first round hole are fixed in a compression joint mode.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011521780.6A CN112531294A (en) | 2020-12-21 | 2020-12-21 | Soft package lithium ion battery tab connecting piece and connecting method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011521780.6A CN112531294A (en) | 2020-12-21 | 2020-12-21 | Soft package lithium ion battery tab connecting piece and connecting method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN112531294A true CN112531294A (en) | 2021-03-19 |
Family
ID=75002213
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011521780.6A Pending CN112531294A (en) | 2020-12-21 | 2020-12-21 | Soft package lithium ion battery tab connecting piece and connecting method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112531294A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113571846A (en) * | 2021-07-02 | 2021-10-29 | 厦门海辰新能源科技有限公司 | Current collector assembly, battery monomer, battery pack and manufacturing method of current collector assembly |
Citations (8)
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|---|---|---|---|---|
| CN101079501A (en) * | 2006-05-26 | 2007-11-28 | 重庆戴徕密客电源有限公司 | A secondary liquid lithium ion cell structure |
| CN101887956A (en) * | 2010-06-24 | 2010-11-17 | 朝阳立塬新能源有限公司 | Splitting riveting type energy storage device with low internal resistance |
| CN102263284A (en) * | 2011-06-30 | 2011-11-30 | 奇瑞汽车股份有限公司 | Cell structure |
| US20150188244A1 (en) * | 2012-09-19 | 2015-07-02 | Yazaki Corporation | Connecting structure for bus bar and electrical wire |
| US20170062789A1 (en) * | 2015-08-27 | 2017-03-02 | Samsung Sdi Co., Ltd. | Battery pack |
| CN206332095U (en) * | 2017-01-03 | 2017-07-14 | 潍坊天泽新能源有限公司 | A kind of column lithium ion battery group assembly and connection structure |
| CN108695480A (en) * | 2017-03-30 | 2018-10-23 | 福特全球技术公司 | Electrical interconnections for battery unit |
| US20190067650A1 (en) * | 2017-08-30 | 2019-02-28 | Contemporary Amperex Technology Co., Limited | Cap assembly for secondary battery, secondary battery and battery module |
-
2020
- 2020-12-21 CN CN202011521780.6A patent/CN112531294A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101079501A (en) * | 2006-05-26 | 2007-11-28 | 重庆戴徕密客电源有限公司 | A secondary liquid lithium ion cell structure |
| CN101887956A (en) * | 2010-06-24 | 2010-11-17 | 朝阳立塬新能源有限公司 | Splitting riveting type energy storage device with low internal resistance |
| CN102263284A (en) * | 2011-06-30 | 2011-11-30 | 奇瑞汽车股份有限公司 | Cell structure |
| US20150188244A1 (en) * | 2012-09-19 | 2015-07-02 | Yazaki Corporation | Connecting structure for bus bar and electrical wire |
| US20170062789A1 (en) * | 2015-08-27 | 2017-03-02 | Samsung Sdi Co., Ltd. | Battery pack |
| CN206332095U (en) * | 2017-01-03 | 2017-07-14 | 潍坊天泽新能源有限公司 | A kind of column lithium ion battery group assembly and connection structure |
| CN108695480A (en) * | 2017-03-30 | 2018-10-23 | 福特全球技术公司 | Electrical interconnections for battery unit |
| US20190067650A1 (en) * | 2017-08-30 | 2019-02-28 | Contemporary Amperex Technology Co., Limited | Cap assembly for secondary battery, secondary battery and battery module |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113571846A (en) * | 2021-07-02 | 2021-10-29 | 厦门海辰新能源科技有限公司 | Current collector assembly, battery monomer, battery pack and manufacturing method of current collector assembly |
| CN113571846B (en) * | 2021-07-02 | 2022-12-27 | 厦门海辰储能科技股份有限公司 | Current collector assembly, battery monomer, battery pack and manufacturing method of current collector assembly |
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| Date | Code | Title | Description |
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| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20210319 |
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| RJ01 | Rejection of invention patent application after publication |