CN110620207A - Soft connecting sheet for lithium ion battery and lithium ion battery - Google Patents
Soft connecting sheet for lithium ion battery and lithium ion battery Download PDFInfo
- Publication number
- CN110620207A CN110620207A CN201810631583.6A CN201810631583A CN110620207A CN 110620207 A CN110620207 A CN 110620207A CN 201810631583 A CN201810631583 A CN 201810631583A CN 110620207 A CN110620207 A CN 110620207A
- Authority
- CN
- China
- Prior art keywords
- sheet
- lithium ion
- clamping
- ion battery
- 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 23
- 229910001416 lithium ion Inorganic materials 0.000 title claims abstract description 23
- 238000005253 cladding Methods 0.000 claims abstract description 9
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 8
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 8
- 229910052782 aluminium Inorganic materials 0.000 claims description 8
- 238000003466 welding Methods 0.000 claims description 8
- 229910052802 copper Inorganic materials 0.000 claims description 6
- 239000010949 copper Substances 0.000 claims description 6
- 239000011248 coating agent Substances 0.000 claims description 2
- 238000000576 coating method Methods 0.000 claims description 2
- 239000011889 copper foil Substances 0.000 claims description 2
- 239000011888 foil Substances 0.000 claims 1
- 238000004519 manufacturing process Methods 0.000 description 3
- 230000008878 coupling Effects 0.000 description 2
- 238000010168 coupling process Methods 0.000 description 2
- 238000005859 coupling reaction Methods 0.000 description 2
- 238000005096 rolling process Methods 0.000 description 2
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000007306 turnover Effects 0.000 description 1
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
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
- H01M50/50—Current conducting connections for cells or batteries
- H01M50/531—Electrode connections inside a battery casing
-
- 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
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Materials Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Connection Of Batteries Or Terminals (AREA)
Abstract
The invention discloses a soft connecting sheet for a lithium ion battery, which comprises a fixing sheet, a first clamping sheet and a second clamping sheet, wherein the first clamping sheet and the second clamping sheet are arranged at an angle and are connected with each other; the first clamping piece and the second clamping piece are used for cladding and connecting the tabs; a lithium ion battery is also disclosed. The battery pole piece is connected in a wrapping mode through the first clamping piece and the second clamping piece, so that the battery short circuit caused by the fact that the multi-layer pole piece is folded and contacts with the shell or the pole piece opposite to the shell can be prevented, and the safety performance of the battery is improved.
Description
Technical Field
The invention belongs to the technical field of lithium ion batteries, and particularly relates to a soft connecting sheet for a lithium ion battery and the lithium ion battery.
Background
The flexible connection piece is used for connecting top cap and utmost point ear, has reduced the connecting plate and has connected the space that can not bend and occupy with utmost point ear, has reduced connection utmost point ear resistance, and has improved the performance of battery, but this kind of flexible connection piece exists following not enoughly: the structural design of the soft connecting sheet has defects, only one side can be welded with a plurality of layers of lugs, the lugs are easy to turn over and contact with the shell or the pole piece opposite to the shell to cause short circuit, and the insecurity of the battery is increased; the soft connecting sheet is welded by a plurality of layers of copper or aluminum sheets to have larger internal resistance, so that the performance of the battery is reduced; the spacing between the soft connecting pieces is easy to be overlarge, and the production efficiency is reduced.
Disclosure of Invention
In view of the above, the main objective of the present invention is to provide a flexible connecting sheet for a lithium ion battery and a lithium ion battery thereof.
In order to achieve the purpose, the technical scheme of the invention is realized as follows:
the embodiment of the invention provides a soft connecting sheet for a lithium ion battery, which comprises a fixing sheet, a first clamping sheet and a second clamping sheet, wherein the first clamping sheet and the second clamping sheet are arranged at an angle and are connected with each other; the first clamping piece and the second clamping piece are connected with the pole lug in a coating mode.
In the above scheme, the fixing sheet is provided with a welding area for ultrasonic pre-welding.
The embodiment of the invention also provides a lithium ion battery, which comprises the soft connecting sheet, the upper cover plate and the battery core lug in any one of the schemes, wherein one side of the soft connecting sheet is fixed on the upper cover plate, and the other side of the soft connecting sheet is connected with the battery core lug in a covering manner.
In the above scheme, the battery core tab comprises a positive electrode tab and a negative electrode tab, the flexible connecting sheet connected with the positive electrode tab is made of an aluminum sheet, and the flexible connecting sheet connected with the negative electrode tab is made of a copper sheet.
In the scheme, the thickness of the aluminum sheet is 5-200 mu m, and the thickness of the copper sheet is 5-200 mu m.
Compared with the prior art, the battery pole lug is connected in a wrapping mode through the first clamping piece and the second clamping piece, the battery can be prevented from being short-circuited due to the fact that the multi-layer pole lug is folded and contacts with the shell or the pole piece opposite to the shell, and the safety performance of the battery is improved.
Drawings
Fig. 1 is a schematic structural diagram of a flexible connecting sheet for a lithium ion battery according to an embodiment of the present invention;
fig. 2 is a front view of a flexible connecting sheet for a lithium ion battery according to an embodiment of the present invention;
fig. 3 is a right side view of a flexible connecting sheet for a lithium ion battery according to an embodiment of the present invention.
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.
The embodiment of the invention provides a soft connecting sheet for a lithium ion battery, which comprises a fixing sheet 1, a first clamping sheet 2 and a second clamping sheet 3, wherein the first clamping sheet 2 and the second clamping sheet 3 are arranged at an angle and are connected, and one side of the fixing sheet 1 is connected with the connecting part of the first clamping sheet 2 and the second clamping sheet 3; first holding piece 2, second holding piece 3 are connected to utmost point ear cladding, like this, through first holding piece 2, second holding piece 3 are connected to utmost point ear cladding, can prevent that the multilayer utmost point ear from rolling over and leading to the battery short circuit with shell or the pole piece contact opposite thereto, have improved the security performance of battery.
First holding piece 2, second holding piece 3 adopt the ultrasonic wave full weld to realize the cladding to utmost point ear, can effectively prevent the too big phenomenon of interval between first holding piece 2, the second holding piece 3, have improved production efficiency.
The fixing sheet 1 is provided with a welding area for ultrasonic pre-welding.
The embodiment of the invention also provides a lithium ion battery, which comprises a soft connecting sheet, an upper cover plate and a battery core lug, wherein one side of the soft connecting sheet is fixed on the upper cover plate, and the other side of the soft connecting sheet is connected with the battery core lug in a covering manner.
The flexible connecting sheet comprises a fixing sheet 1, a first clamping sheet 2 and a second clamping sheet 3, the first clamping sheet 2 and the second clamping sheet 3 are arranged at an angle and connected, and one side of the fixing sheet 1 is connected with the connecting part of the first clamping sheet 2 and the second clamping sheet 3; first holding piece 2, second holding piece 3 are connected to utmost point ear cladding, like this, through first holding piece 2, second holding piece 3 are connected to utmost point ear cladding, can prevent that the multilayer utmost point ear from rolling over and leading to the battery short circuit with shell or the pole piece contact opposite thereto, have improved the security performance of battery.
First holding piece 2, second holding piece 3 adopt the ultrasonic wave full weld to realize the cladding to utmost point ear, can effectively prevent the too big phenomenon of interval between first holding piece 2, the second holding piece 3, have improved production efficiency.
The fixing sheet 1 is provided with a welding area for ultrasonic pre-welding.
The battery cell tab comprises a positive electrode tab and a negative electrode tab, the soft connecting sheet connected with the positive electrode tab is made of an aluminum sheet, and the soft connecting sheet connected with the negative electrode tab is made of a copper sheet; the soft connecting sheet is made of an aluminum sheet or a copper foil sheet, so that the internal resistance of the battery can be reduced, and the performance of the battery can be improved.
The thickness of the aluminum sheet is 5-200 μm, and the thickness of the copper sheet is 5-200 μm.
The assembly process of the invention:
weld the stationary blade of flexible coupling piece on the upper cover plate through ultrasonic wave prewelding, again with the open first holding piece 2 of flexible coupling piece, the 3 centre gripping of second holding piece on utmost point ear, later gradually merge first holding piece 2, the 3 centre gripping utmost point ear of second holding piece until complete centre gripping utmost point ear, the realization of rethread ultrasonic wave full weld is to the cladding of utmost point ear.
The above description is only a preferred embodiment of the present invention, and is not intended to limit the scope of the present invention.
Claims (5)
1. A soft connecting sheet for a lithium ion battery is characterized by comprising a fixing sheet, a first clamping sheet and a second clamping sheet, wherein the first clamping sheet and the second clamping sheet are arranged at an angle and are connected with each other, and one side of the fixing sheet is connected with the joint of the first clamping sheet and the second clamping sheet; the first clamping piece and the second clamping piece are connected with the pole lug in a coating mode.
2. The flexible connecting sheet for the lithium ion battery as claimed in claim 1, wherein a welding area for ultrasonic pre-welding is provided on the fixing sheet.
3. A lithium ion battery, characterized in that, it includes the flexible connecting sheet, upper cover plate, battery core ear of any one of claims 1-2, one side of the flexible connecting sheet is fixed on the upper cover plate, the other side is connected with battery core ear cladding.
4. The lithium ion battery of claim 3, wherein the cell tab comprises a positive electrode tab and a negative electrode tab, the flexible connecting sheet connected with the positive electrode tab is made of an aluminum sheet, and the flexible connecting sheet connected with the negative electrode tab is made of a copper sheet.
5. The lithium ion battery according to claim 4, wherein the aluminum foil has a thickness of 5 to 200 μm, and the copper foil has a thickness of 5 to 200 μm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810631583.6A CN110620207A (en) | 2018-06-19 | 2018-06-19 | Soft connecting sheet for lithium ion battery and lithium ion battery |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810631583.6A CN110620207A (en) | 2018-06-19 | 2018-06-19 | Soft connecting sheet for lithium ion battery and lithium ion battery |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110620207A true CN110620207A (en) | 2019-12-27 |
Family
ID=68920521
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810631583.6A Pending CN110620207A (en) | 2018-06-19 | 2018-06-19 | Soft connecting sheet for lithium ion battery and lithium ion battery |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110620207A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115117569A (en) * | 2022-07-25 | 2022-09-27 | 实联长宜淮安科技有限公司 | Square aluminum-shell lithium ion power battery with high energy density |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN205177928U (en) * | 2015-10-23 | 2016-04-20 | 浙江钱江锂电科技有限公司 | Connection structure of soft package lithium -ion battery utmost point ear |
| CN207303404U (en) * | 2017-09-13 | 2018-05-01 | 河北银隆新能源有限公司 | One kind is flexible coupling piece and its square housing battery |
| CN208460862U (en) * | 2018-06-19 | 2019-02-01 | 成都市银隆新能源有限公司 | A kind of be flexible coupling piece and its lithium ion battery for lithium ion battery |
-
2018
- 2018-06-19 CN CN201810631583.6A patent/CN110620207A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN205177928U (en) * | 2015-10-23 | 2016-04-20 | 浙江钱江锂电科技有限公司 | Connection structure of soft package lithium -ion battery utmost point ear |
| CN207303404U (en) * | 2017-09-13 | 2018-05-01 | 河北银隆新能源有限公司 | One kind is flexible coupling piece and its square housing battery |
| CN208460862U (en) * | 2018-06-19 | 2019-02-01 | 成都市银隆新能源有限公司 | A kind of be flexible coupling piece and its lithium ion battery for lithium ion battery |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115117569A (en) * | 2022-07-25 | 2022-09-27 | 实联长宜淮安科技有限公司 | Square aluminum-shell lithium ion power battery with high energy density |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| 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: 20191227 |
|
| RJ01 | Rejection of invention patent application after publication |