CN209641727U - The connection structure of pole piece and tab - Google Patents
The connection structure of pole piece and tab Download PDFInfo
- Publication number
- CN209641727U CN209641727U CN201920735643.9U CN201920735643U CN209641727U CN 209641727 U CN209641727 U CN 209641727U CN 201920735643 U CN201920735643 U CN 201920735643U CN 209641727 U CN209641727 U CN 209641727U
- Authority
- CN
- China
- Prior art keywords
- pole piece
- tab
- metalwork
- lithium metal
- connection structure
- 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.)
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- 229910052744 lithium Inorganic materials 0.000 claims abstract description 47
- 238000003466 welding Methods 0.000 claims abstract description 12
- 239000000463 material Substances 0.000 claims abstract description 10
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical group [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 22
- 239000010949 copper Substances 0.000 claims description 21
- 229910052802 copper Inorganic materials 0.000 claims description 21
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 claims description 15
- 229910052759 nickel Inorganic materials 0.000 claims description 7
- 238000003825 pressing Methods 0.000 claims description 6
- 229910052751 metal Inorganic materials 0.000 claims description 2
- 239000002184 metal Substances 0.000 claims description 2
- 229910001416 lithium ion Inorganic materials 0.000 abstract description 10
- HBBGRARXTFLTSG-UHFFFAOYSA-N Lithium ion Chemical compound [Li+] HBBGRARXTFLTSG-UHFFFAOYSA-N 0.000 abstract description 8
- 238000004519 manufacturing process Methods 0.000 abstract description 5
- 238000005476 soldering Methods 0.000 abstract description 4
- 238000010586 diagram Methods 0.000 description 5
- 238000000034 method Methods 0.000 description 5
- 201000009032 substance abuse Diseases 0.000 description 5
- 238000005520 cutting process Methods 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 description 2
- 239000004411 aluminium Substances 0.000 description 2
- 229910052782 aluminium Inorganic materials 0.000 description 2
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 2
- 230000008859 change Effects 0.000 description 2
- 230000005611 electricity Effects 0.000 description 2
- 229910000570 Cupronickel Inorganic materials 0.000 description 1
- 229910018054 Ni-Cu Inorganic materials 0.000 description 1
- 229910018481 Ni—Cu Inorganic materials 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 239000011889 copper foil Substances 0.000 description 1
- YOCUPQPZWBBYIX-UHFFFAOYSA-N copper nickel Chemical compound [Ni].[Cu] YOCUPQPZWBBYIX-UHFFFAOYSA-N 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000004146 energy storage Methods 0.000 description 1
- 238000004880 explosion Methods 0.000 description 1
- 239000011888 foil Substances 0.000 description 1
- 230000008676 import Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000007747 plating Methods 0.000 description 1
- 230000035939 shock Effects 0.000 description 1
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
Landscapes
- Connection Of Batteries Or Terminals (AREA)
Abstract
The utility model discloses the connection structures of a kind of pole piece and tab, including pole piece and tab, the pole piece is connect through a connection piece with tab, the connector includes the first metalwork and the second metalwork, the first area of first metalwork is connect with pole piece, second area is stretched out by one end of pole piece and is connect with tab, and second metalwork is connect with the pole piece, and at least first metalwork first area is locally provided between second metalwork and pole piece；Wherein the pole piece is identical as the material of the second metalwork.The connection structure of pole piece and tab provided by the utility model was solved because of the problems such as lithium metal pole piece deforms, lithium metal pole piece is sticked on soldering tip, tab welding is insecure, to improve battery performance and and provide the processing efficiency of battery production；And during actual welding, the connection structure of the pole piece and tab can protect the weld integrity of lithium metal pole piece and tab, and then the performance of lithium ion battery to be formed can be kept more stable.
Description
Technical field
The utility model relates to a kind of battery pole piece, in particular to the connection structure of a kind of pole piece and tab belongs to battery
Technical field.
Background technique
Commercial li-ion battery have energy and power density height, memory-less effect, have extended cycle life with it is environmental-friendly etc.
Advantage, application are just just being extended to electric car and new energy energy storage field from consumer electronics field rapidly in its application.So
And in recent years, with the large-scale promotion application of lithium ion battery, worldwide, can all occur every year largely and lithium from
Sub- battery abuses the relevant safety accident of thermal runaway, and academia and industrial circle also are paid attention to and reinforce to pacify lithium ion battery continuous
Full property probing into and improving.Causing the abuse conditions of thermal runaway (smolder, is on fire, burning, explosion) mainly has mechanical abuse (as squeezed
Pressure, needle thorn), electricity abuse (such as overcharging, internal short-circuit) and heat abuse (as thermal shock).From lithium ion battery thermal runaway process
Chain reaction qualitative description in as can be seen that lithium ion battery tab welding role during battery thermal runaway it is non-
Chang Guanjian.
Lithium ion cell polar ear, as its name suggests, battery pole ear are exactly the tab on battery, and specification, electric current are logical
It is all very big to cross value.The tab producer of supply currently on the market is very more, and domestic tab also all uses the pole of South Korea's import mostly
Ear material, but there may be differences in the high-quality grade of material.Tab is divided into three kinds of materials, the anode (aluminium of battery at present
Foil) aluminium (Al) material is used, cathode (copper foil) uses nickel (Ni) material, and cathode also has copper nickel plating (Ni-Cu) material, they are all
It is combined by film and metal tape two parts.But due to lithium metal pole piece oneself factor (it is light-weight, quality is soft, sticky
Greatly, easily-deformable), traditional ear pole material can not be directly welded on pole piece.
Utility model content
The main purpose of the utility model is to provide the connection structures of a kind of pole piece and tab, to overcome the prior art
It is insufficient.
For the aforementioned purpose of utility model of realization, the technical solution adopted in the utility model includes:
The utility model embodiment provides the connection structure of a kind of pole piece and tab, including pole piece and tab, the pole
Piece is connect through a connection piece with tab, and the connector includes the first metalwork and the second metalwork, first metalwork
First area is connect with pole piece, second area by pole piece one end stretch out and connect with tab, second metalwork with it is described
Pole piece connection, and at least first metalwork first area is locally provided between second metalwork and pole piece；Its
Described in pole piece it is identical as the material of the second metalwork.
Further, the first area of first metalwork is completely covered in second metalwork.
Further, the area of second metalwork is slightly larger than the area of the first metalwork first area.
Further, the length of the second area of first metalwork is the 50~80% of the first metalwork total length.
Further, 6~8mm of the length of the second area of first metalwork.
Further, first metalwork and pole piece pressing connect.
Further, second metalwork and the first metalwork, pole piece pressing connect.
Further, the tab and the first metalwork weld.
Further, the pole piece is lithium metal pole piece, and second metalwork is lithium metal piece.
Further, the lithium metal pole piece with a thickness of 100~200 μm, the lithium metal piece with a thickness of 50~
150μm。
Further, first metalwork is copper sheet, and the tab is nickel tab.
Further, the copper sheet with a thickness of 6~8 μm.
Compared with prior art, the connection structure of pole piece and tab provided by the utility model, structure is simple, which solve
Because of the problems such as lithium metal pole piece deforms, lithium metal pole piece is sticked on soldering tip, tab welding is insecure, to improve battery performance
With and provide the processing efficiency of battery production；And during actual welding, the connection knot of the pole piece and tab
Structure can protect the weld integrity of lithium metal pole piece and tab, and then the performance of lithium ion battery to be formed can be made more steady
It is fixed.
Detailed description of the invention
Fig. 1 is the structural schematic diagram that the lithium metal pole piece to be formed is cut in one exemplary embodiments of the utility model；
Fig. 2 is the structural schematic diagram that the copper sheet to be formed is cut in one exemplary embodiments of the utility model；
Fig. 3 is that copper sheet is pressed together on to the structural schematic diagram after lithium metal pole piece in one exemplary embodiments of the utility model；
Fig. 4 is the structural schematic diagram that the lithium metal piece to be formed is cut in one exemplary embodiments of the utility model；
Fig. 5 is that lithium metal piece is pressed together on to the structural representation behind copper sheet surface in one exemplary embodiments of the utility model
Figure；
The structural schematic diagram of the connection structure of a kind of pole piece and tab in one exemplary embodiments of Fig. 6 the utility model；
Fig. 7 is that a kind of partial structurtes of the connection structure of pole piece and tab in one exemplary embodiments of the utility model are illustrated
Figure.
Specific embodiment
In view of deficiency in the prior art, inventor is studied for a long period of time and is largely practiced, and is able to propose that this is practical new
The technical solution of type.The technical solution, its implementation process and principle etc. will be further explained as follows.
Please refer to Fig. 6 and Fig. 7, a kind of connection structure of pole piece and tab, including lithium metal pole piece 1, nickel tab 2, copper sheet 3
And lithium metal piece 4, the first area 31 of copper sheet 3 are pressed together on lithium metal pole piece 1, the second area 32 of copper sheet 3 is by lithium metal
One end of pole piece 1 is stretched out, and the length of the second area 32 of copper sheet 3 is the 60% of 1 length of lithium metal pole piece, the face of lithium metal piece 4
Product is slightly larger than the area of the first area 31 of copper sheet 3, and the first area 31 of copper sheet 3, and lithium metal is completely covered in lithium metal piece 4
Piece 4 and copper sheet 3, the pressing of lithium metal pole piece 1 connect；Nickel tab 2 is welded on the second area 32 of copper sheet 3.
The connection structure of pole piece and tab provided by the utility model is solved because of lithium metal pole piece quality dead-soft, variable change
The problem of shape is brought, directly welding nickel tab will lead to the problems such as lithium metal pole piece is sticked on soldering tip, tab welding is insecure, from
And the problem of influencing battery performance and battery production processing efficiency；The connection structure energy of pole piece and tab provided by the utility model
Enough guarantee during actual welding, protection lithium metal pole piece and tab welding integrality finally guarantee performance of lithium ion battery
With production and processing efficiency.
Specifically, a kind of forming process of the connection structure of pole piece and tab includes:
1) as shown in Figure 1, cutting to form lithium metal pole 1, length 79mm, width 53mm, thickness 150 by guillotine
μm (dimensions can be adjusted according to different battery requirements)；
2) as shown in Fig. 2, cutting to form copper sheet 3 by guillotine, length 10mm, width 5mm, 8 μm of thickness (size rule
Lattice can be adjusted according to different lithium metal pole piece demand)；
3) as shown in figure 3, (pressure can be according to different lithium metal pole piece demand tune using the cylinder of 0.3~0.5MPa pressure
It is whole), by the pressing of 2 one end of copper sheet on Fig. 1 lithium metal pole piece 1, one end of copper sheet is protruded by 1 one end of lithium metal pole piece, protrusion length
Degree is 6mm (protrusion length can be adjusted according to different lithium metal pole piece)；
4) as shown in figure 4, cutting to form lithium metal piece 4 by guillotine, length 5mm, width 6mm, 75 μm of (rulers of thickness
Very little specification can be adjusted according to different battery requirements)；
5) as shown in figure 5, (pressure can be according to different lithium metal pole piece demand tune using the cylinder of 0.3~0.5MPa pressure
It is whole), Fig. 4 lithium metal piece 4 is pressed into copper sheet 2 shown in Fig. 3 and is located on the region of lithium metal pole piece, guarantees that lithium metal piece is complete
Copper 2 on lithium metal pole piece 1 are covered, battery capacity is not influenced；
6) ultrasonic bonding is finally used, nickel tab 4 is welded on copper sheet 2, final soldered pole piece and tab
Connection structure it is as shown in Figure 6.
The connection structure of pole piece and tab provided by the utility model, structure is simple, and which solve become because of lithium metal pole piece
Shape, the problems such as lithium metal pole piece is sticked on soldering tip, tab welding is insecure, to improve battery performance and and provide electricity
The processing efficiency of pond production；And during actual welding, the connection structure of the pole piece and tab can protect lithium golden
Belong to the weld integrity of pole piece and tab, and then the performance of lithium ion battery to be formed can be made more stable.
It should be appreciated that above-described embodiment is only to illustrate the technical ideas and features of the present invention, it is ripe its object is to allow
The personage for knowing technique can understand the content of the utility model and implement accordingly, can not limit the utility model with this
Protection scope.All equivalent change or modifications according to made by the spirit of the present invention essence, should all cover in the utility model
Within protection scope.
Claims (10)
1. the connection structure of a kind of pole piece and tab, including pole piece and tab, it is characterised in that: the pole piece through a connection piece with
Tab connection, the connector include the first metalwork and the second metalwork, the first area of first metalwork and pole piece
Connection, second area are stretched out by one end of pole piece and are connect with tab, and second metalwork is connect with the pole piece, and at least
First metalwork first area is locally provided between second metalwork and pole piece；The wherein pole piece and second
The material of metalwork is identical.
2. the connection structure of pole piece according to claim 1 and tab, it is characterised in that: second metalwork covers completely
Cover the first area of first metalwork.
3. the connection structure of pole piece according to claim 1 and tab, it is characterised in that: the second of first metalwork
The length in region is the 50~80% of the first metalwork total length.
4. the connection structure of pole piece according to claim 3 and tab, it is characterised in that: the second of first metalwork
6~8mm of the length in region.
5. the connection structure of pole piece according to claim 1 or 2 and tab, it is characterised in that: first metalwork with
Pole piece pressing connection.
6. the connection structure of pole piece according to claim 1 or 2 and tab, it is characterised in that: second metalwork with
First metalwork, pole piece pressing connection.
7. the connection structure of pole piece according to claim 1 or claim 2 and tab, it is characterised in that: the tab and the first metal
Part welding.
8. the connection structure of pole piece according to claim 1 and tab, it is characterised in that: the pole piece is lithium metal pole
Piece, second metalwork are lithium metal piece.
9. the connection structure of pole piece according to claim 8 and tab, it is characterised in that: the thickness of the lithium metal pole piece
Be 100~200 μm, the lithium metal piece with a thickness of 50~150 μm.
10. the connection structure of pole piece according to claim 1 and tab, it is characterised in that: first metalwork is copper
Piece, the tab are nickel tab；And/or the copper sheet with a thickness of 6~8 μm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920735643.9U CN209641727U (en) | 2019-05-21 | 2019-05-21 | The connection structure of pole piece and tab |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920735643.9U CN209641727U (en) | 2019-05-21 | 2019-05-21 | The connection structure of pole piece and tab |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209641727U true CN209641727U (en) | 2019-11-15 |
Family
ID=68498589
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920735643.9U Active CN209641727U (en) | 2019-05-21 | 2019-05-21 | The connection structure of pole piece and tab |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209641727U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115954432A (en) * | 2022-12-27 | 2023-04-11 | 天津蓝天特种电源科技股份公司 | A preparation method of a lithium primary battery multi-layer laminated structure negative electrode |
| CN116683126A (en) * | 2023-07-10 | 2023-09-01 | 中创新航科技集团股份有限公司 | Battery cell |
-
2019
- 2019-05-21 CN CN201920735643.9U patent/CN209641727U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115954432A (en) * | 2022-12-27 | 2023-04-11 | 天津蓝天特种电源科技股份公司 | A preparation method of a lithium primary battery multi-layer laminated structure negative electrode |
| CN116683126A (en) * | 2023-07-10 | 2023-09-01 | 中创新航科技集团股份有限公司 | Battery cell |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| EE01 | Entry into force of recordation of patent licensing contract |
Assignee: Anhui Xingtai Financial Leasing Co.,Ltd. Assignor: ANHUI MENGWEI NEW ENERGY TECHNOLOGY Co.,Ltd. Contract record no.: X2021340000016 Denomination of utility model: The connecting structure of pole piece and pole ear Granted publication date: 20191115 License type: Exclusive License Record date: 20210625 |
|
| EE01 | Entry into force of recordation of patent licensing contract | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of utility model: The connecting structure of pole piece and pole ear Effective date of registration: 20210625 Granted publication date: 20191115 Pledgee: Anhui Xingtai Financial Leasing Co.,Ltd. Pledgor: ANHUI MENGWEI NEW ENERGY TECHNOLOGY Co.,Ltd. Registration number: Y2021980005369 |
|
| EC01 | Cancellation of recordation of patent licensing contract |
Assignee: Anhui Xingtai Financial Leasing Co.,Ltd. Assignor: ANHUI MENGWEI NEW ENERGY TECHNOLOGY Co.,Ltd. Contract record no.: X2021340000016 Date of cancellation: 20220802 |
|
| EC01 | Cancellation of recordation of patent licensing contract | ||
| PC01 | Cancellation of the registration of the contract for pledge of patent right |
Date of cancellation: 20220801 Granted publication date: 20191115 Pledgee: Anhui Xingtai Financial Leasing Co.,Ltd. Pledgor: ANHUI MENGWEI NEW ENERGY TECHNOLOGY Co.,Ltd. Registration number: Y2021980005369 |
|
| PC01 | Cancellation of the registration of the contract for pledge of patent right | ||
| EE01 | Entry into force of recordation of patent licensing contract | ||
| EE01 | Entry into force of recordation of patent licensing contract |
Assignee: Anhui Xingtai Financial Leasing Co.,Ltd. Assignor: ANHUI MENGWEI NEW ENERGY TECHNOLOGY Co.,Ltd. Contract record no.: X2023980035376 Denomination of utility model: Connection structure between pole piece and pole ear Granted publication date: 20191115 License type: Exclusive License Record date: 20230512 |
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| PE01 | Entry into force of the registration of the contract for pledge of patent right | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of utility model: Connection structure between pole piece and pole ear Effective date of registration: 20230516 Granted publication date: 20191115 Pledgee: Anhui Xingtai Financial Leasing Co.,Ltd. Pledgor: ANHUI MENGWEI NEW ENERGY TECHNOLOGY Co.,Ltd. Registration number: Y2023980040670 |
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| PC01 | Cancellation of the registration of the contract for pledge of patent right | ||
| PC01 | Cancellation of the registration of the contract for pledge of patent right |
Granted publication date: 20191115 Pledgee: Anhui Xingtai Financial Leasing Co.,Ltd. Pledgor: ANHUI MENGWEI NEW ENERGY TECHNOLOGY Co.,Ltd. Registration number: Y2023980040670 |
|
| EC01 | Cancellation of recordation of patent licensing contract |
Assignee: Anhui Xingtai Financial Leasing Co.,Ltd. Assignor: ANHUI MENGWEI NEW ENERGY TECHNOLOGY Co.,Ltd. Contract record no.: X2023980035376 Date of cancellation: 20240617 |
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| EC01 | Cancellation of recordation of patent licensing contract |