CN106207067B - Pole piece connection structure, pole piece connection method, collector and lithium battery - Google Patents
Pole piece connection structure, pole piece connection method, collector and lithium battery Download PDFInfo
- Publication number
- CN106207067B CN106207067B CN201610759833.5A CN201610759833A CN106207067B CN 106207067 B CN106207067 B CN 106207067B CN 201610759833 A CN201610759833 A CN 201610759833A CN 106207067 B CN106207067 B CN 106207067B
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- CN
- China
- Prior art keywords
- tab
- collector
- pole piece
- segment pulse
- interconnecting piece
- 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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Classifications
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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
- 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
- H01M50/54—Connection of several leads or tabs of plate-like electrode stacks, e.g. electrode pole straps or bridges
-
- 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
- H01M4/00—Electrodes
- H01M4/02—Electrodes composed of, or comprising, active material
- H01M4/64—Carriers or collectors
- H01M4/70—Carriers or collectors characterised by shape or form
- H01M4/72—Grids
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
- H01R4/00—Electrically-conductive connections between two or more conductive members in direct contact, i.e. touching one another; Means for effecting or maintaining such contact; Electrically-conductive connections having two or more spaced connecting locations for conductors and using contact members penetrating insulation
- H01R4/10—Electrically-conductive connections between two or more conductive members in direct contact, i.e. touching one another; Means for effecting or maintaining such contact; Electrically-conductive connections having two or more spaced connecting locations for conductors and using contact members penetrating insulation effected solely by twisting, wrapping, bending, crimping, or other permanent deformation
- H01R4/18—Electrically-conductive connections between two or more conductive members in direct contact, i.e. touching one another; Means for effecting or maintaining such contact; Electrically-conductive connections having two or more spaced connecting locations for conductors and using contact members penetrating insulation effected solely by twisting, wrapping, bending, crimping, or other permanent deformation by crimping
- H01R4/182—Electrically-conductive connections between two or more conductive members in direct contact, i.e. touching one another; Means for effecting or maintaining such contact; Electrically-conductive connections having two or more spaced connecting locations for conductors and using contact members penetrating insulation effected solely by twisting, wrapping, bending, crimping, or other permanent deformation by crimping for flat conductive elements, e.g. flat cables
-
- 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
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- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Connection Of Batteries Or Terminals (AREA)
Abstract
The present invention relates to pole piece connection structure, pole piece connection method, collector and the lithium batteries in lithium electro-technical field；The collector is equipped with the clamp structure for being inserted into for tab and forming positioning along the thickness direction of tab insertion portion to the tab of insertion, and the location structure limited with the tab of insertion along tab direction of insertion block, the interconnecting piece with tab close fit is additionally provided on collector, interconnecting piece and the tab being bonded therewith form lamination portion, and lamination portion is equipped with the convex-concave nested structure or perforative fastening connection piece being stamped and formed out；In use, convex-concave nested structure or perforative fastening connection piece that collector and tab are stamped and formed out by lamination portion are connected, compared with the prior art, avoid collector and other elements are damaged with high heat when tab welding；The coupling part quality of collector and tab can be examined by observation simultaneously, improve the total quality of product.
Description
Technical field
The present invention relates to pole piece connection structure, pole piece connection method, collector and the lithium batteries in lithium electro-technical field.
Background technique
Lithium ion battery is due to its superiority, and in electric vehicle, communication power supply, energy storage field, lithium ionic cell module is obtained
It is widely applied；Soft bag lithium ionic cell is since energy density is higher, and application percentage is higher in actual use；It is answered in soft-package battery
With in the process, tab group technology plays the role of vital.
Notification number is CN202503066U, and the applying date is that the Chinese utility model patent of 2012.03.01 discloses a kind of afflux
Body and pole piece connection structure using the collector, the elongated slot of multiple laid out in parallel are opened up on collector, tab is one-to-one
Across elongated slot, by tab towards the junction bending of elongated slot, the dogleg section of tab is bonded with collector, is welded in joint place,
Tab sum aggregate is set to fluidly connect conducting.
Above-mentioned existing lithium battery, on the one hand, the quantity of heat production after welding is higher, is easy to damage other elements；On the other hand,
The detection of welding portion is complex, and welding quality is difficult to ensure.
Summary of the invention
The purpose of the present invention is to provide the pole piece companies that a kind of collector and tab are formed using the connection type of non-solder
Binding structure；The present invention, which also resides in, provides a kind of pole piece connection method, collector and lithium battery.
To achieve the above object, the technical solution of pole piece connection structure of the invention is:
A kind of pole piece connection structure, the collector, which is equipped with, to be inserted into and to the tab of insertion for tab along tab insertion section
Point thickness direction form the clamp structure of positioning, and the positioning knot limited with the tab of insertion along tab direction of insertion block
Structure, the interconnecting piece with tab close fit is additionally provided on collector, and interconnecting piece and the tab being bonded therewith form lamination portion, fold
It closes part and is equipped with the convex-concave nested structure or perforative fastening connection piece being stamped and formed out.
The cross sectional shape of the collector is in impulse waveform, collector two sidewalls corresponding with the segment pulse of impulse waveform
The clamp structure is formed, the top along tab direction of insertion of impulse waveform forms the location structure.
One of side wall of the segment pulse is equipped with opening.
One of side wall of the segment pulse is equipped with opening, and the interconnecting piece is by being set to the segment pulse
The flanging in the outside towards segment pulse on another side wall is constituted.
The technical solution of collector of the invention is:
Collector, the collector, which is equipped with, to be inserted into and to the tab of insertion for tab along the thickness side of tab insertion portion
To the clamp structure for forming positioning, and the location structure limited with the tab of insertion along tab direction of insertion block, collector
On be additionally provided with for tab close fit formed lamination portion interconnecting piece.
The cross sectional shape of the collector is in impulse waveform, collector two sidewalls corresponding with the segment pulse of impulse waveform
The clamp structure is formed, the top along tab direction of insertion of impulse waveform forms the location structure.
One of side wall of the segment pulse is equipped with opening.
One of side wall of the segment pulse is equipped with opening, and the interconnecting piece is by being set to the segment pulse
The flanging in the outside towards segment pulse on another side wall is constituted.
The technical solution of pole piece connection method of the invention is:
Pole piece connection method, the pole piece connection method the following steps are included:
A, it by the clamp structure of tab insertion collector, contacts tab with the location structure of collector, realizes tab
Positioning, tab is bonded to form lamination portion with the interconnecting piece of collector；
B, in the lamination portion by way of being stamped and formed out convex-concave nested structure or pass through through both fastening
The mode of connector realizes the connection of collector and tab.
The thickness direction that the collector is equipped with for tab insertion and to the tab of insertion along tab insertion portion is formed
The clamp structure of positioning, and the location structure limited with the tab of insertion along tab direction of insertion block are also set on collector
There is the interconnecting piece with tab close fit, interconnecting piece and the tab being bonded therewith form lamination portion, and lamination portion is equipped with punching
Swaging at convex-concave nested structure or perforative fastening connection piece.
The cross sectional shape of the collector is in impulse waveform, collector two sidewalls corresponding with the segment pulse of impulse waveform
The clamp structure is formed, the top along tab direction of insertion of impulse waveform forms the location structure.
One of side wall of the segment pulse is equipped with opening.
One of side wall of the segment pulse is equipped with opening, and the interconnecting piece is by being set to the segment pulse
The flanging in the outside towards segment pulse on another side wall is constituted.
The technical solution of lithium battery of the invention is:
The coupling part of a kind of lithium battery, including battery core, collector and tab, collector and tab forms pole piece connection knot
Structure, the collector are equipped with the thickness direction being inserted into for tab and to the tab of insertion along tab insertion portion and form positioning
Clamp structure, and the location structure limited with the tab of insertion along tab direction of insertion block, are additionally provided on collector and pole
The interconnecting piece of ear close fit, interconnecting piece and the tab being bonded therewith form lamination portion, and lamination portion is equipped with and is stamped and formed out
Convex-concave nested structure or perforative fastening connection piece.
The cross sectional shape of the collector is in impulse waveform, collector two sidewalls corresponding with the segment pulse of impulse waveform
The clamp structure is formed, the top along tab direction of insertion of impulse waveform forms the location structure.
One of side wall of the segment pulse is equipped with opening.
One of side wall of the segment pulse is equipped with opening, and the interconnecting piece is by being set to the segment pulse
The flanging in the outside towards segment pulse on another side wall is constituted.
The beneficial effects of the present invention are: in the clamp structure of tab insertion collector, the location structure of tab and collector
Contact positioning, the convex-concave nested structure or perforative fastening connection piece phase that collector and tab are stamped and formed out by lamination portion
Connection, compared with the prior art, avoids collector and damages with high heat when tab welding to other elements；Afflux simultaneously
The coupling part quality of body and tab can be examined by observation, improve the total quality of product.
Detailed description of the invention
Fig. 1 is a kind of perspective view of the embodiment 1 of lithium battery of the invention；
Fig. 2 is the right view of Fig. 1；
Fig. 3 is the main view of Fig. 1；
Fig. 4 is the top view of Fig. 1；
Fig. 5 is the structural schematic diagram of the collector in a kind of embodiment 1 of lithium battery of the invention；
Fig. 6 is the structural schematic diagram of the crimp connection fixture in a kind of embodiment 1 of lithium battery of the invention；
Fig. 7 is the structural schematic diagram of the collector in a kind of embodiment 2 of lithium battery of the invention；
Fig. 8 is the structural schematic diagram of the tab in a kind of embodiment 2 of lithium battery of the invention；
Fig. 9 is the structural schematic diagram of the collector in a kind of embodiment 3 of lithium battery of the invention；
Figure 10 is a kind of structural schematic diagram of the embodiment 4 of lithium battery of the invention.
Specific embodiment
Embodiments of the present invention are described further with reference to the accompanying drawing.
A kind of embodiment 1 of lithium battery of the invention, as shown in Figures 1 to 6, including anode, cathode, battery core 1, collector
2, tab 3 and battery case；The cross sectional shape of collector 2 is impulse waveform, and the pulse structure of impulse waveform is set correspondingly
There is tab 3, the lower end of tab 3 is connected with battery core 1.
One of side wall of pulse structure on collector 2 is equipped with opening, and the side wall 2-1 of pulse structure is constituted and pole
The interconnecting piece that ear 3 is bonded, side wall 2-2 are equipped with the clamp structure that opening 2-3, side wall 2-2 and side wall 2-1 constitute collector 2, arteries and veins
The top for rushing structure forms the location structure limited with the top block of tab 3.
When assembly, tab 3 is inserted into from the lower section of pulse structure, the top margin of tab 3 contacts fixed with the top of pulse structure
Position, with the punch-pin 4-1 and cavity plate 4-2 of compression tooling 4 from two side compressions of tab 3 and corresponding pulse structure, side wall 2-1 and pole
Corresponding convex-concave structure is formed on ear 3, tab 3 is in the positioning on the in-plane of side wall 2-1, while clamp structure realizes tab
Along compression tooling crimping direction on positioning.
Further, before crimping, contact effect of the collector 2 with tab 3 can be judged by the 2-3 that is open, adjusted
Relative position between the two；After having crimped, the quality of connection of collector 2 and tab 3, can also by opening 2-3 into
Row observation judgement.
In a kind of other embodiments of the embodiment 1 of lithium battery of the invention, tab can also be directly riveted on
On the side wall of pulse structure.
A kind of embodiment 2 of lithium battery of the invention, as shown in Fig. 7 to Fig. 8, the structure and aforementioned present invention of embodiment 2
A kind of lithium battery embodiment 1 structure it is roughly the same, difference is: embodiment 2 by the structure of collector and tab carry out
Adjustment；Collector 5 is pulse structure, and one of side wall of pulse structure is equipped with outer turnover panel 5-1, outer turnover panel 5-1 with it is convex
The side wall for playing structure is perpendicular, and outer turnover panel 5-1 constitutes the interconnecting piece of collector 5, another side wall of pulse structure, which is equipped with, to be opened
Mouth 5-3；Partition seam 7-1 is set on tab 7.
When assembly, first one end equipped with partition seam 7-1 of tab 7 is inserted into pulse structure, then by two partition seam 7-1
Middle section fold, be bonded it with the top surface of outer turnover panel 5-1, with compression tooling along the vertical direction tab 7 and crimp plate
Crimping forms corresponding convex-concave structure on 5-1.
In a kind of other embodiments of the embodiment 2 of lithium battery of the invention, crimping plate 5-1 can also be with bulge-structure
Side plate in angle of 45 degrees.
In a kind of embodiment 3 of lithium battery of the invention, as shown in figure 9, a kind of lithium of embodiment 3 and aforementioned present invention electricity
The structure of the embodiment 1 in pond is roughly the same, and embodiment 3 is changed the structure of collector；Collector plate 6 includes plate 6-1,
Three groups of crimping structures are arranged at intervals with below plate 6-1, the crimping structure includes crimping plate 6-2 and positioning plate 6-3；Assembly
When, tab is mounted between crimping plate 6-2 and positioning plate 6-3, by tab and crimps plate 6-2 and positioning plate 6-3 with crimp connection fixture
It crimps simultaneously.
In a kind of embodiment 4 of lithium battery of the invention, as shown in Figure 10, including collector 8, the segment pulse of collector
Equipped with the interconnecting piece 8-1 extended downwardly, in use, tab 9 is inserted into the segment pulse from the lower section of pulse structure, connecting
The setting of the lamination portion of portion 8-1 and tab 9 realizes the connection of collector 8 and tab 9 through the rivet 10 of the two.
A kind of specific embodiment of pole piece connection structure of the invention, the structure of the specific embodiment of pole piece connection structure
It is identical as the connection structure of collector and tab in a kind of any embodiment of lithium battery of aforementioned present invention, it is not repeated
It is bright.
A kind of lithium battery of the specific embodiment of pole piece connection method of the invention, pole piece connection method and aforementioned present invention
Any embodiment in collector it is identical with the connection method of tab, be not repeated to illustrate.
A kind of specific embodiment of collector of the invention, the structure and aforementioned present invention of the specific embodiment of collector
A kind of lithium battery any embodiment in collector structure it is identical, be not repeated to illustrate.
Claims (3)
1. a kind of pole piece connection structure, it is characterised in that: collector, which is equipped with, to be inserted into and to the tab of insertion for tab along tab
The thickness direction of insertion portion forms the clamp structure of positioning, and the tab of insertion is limited along tab direction of insertion block
Location structure, the interconnecting piece with tab close fit is additionally provided on collector, and interconnecting piece and the tab being bonded therewith form overlapping
Part, lamination portion are equipped with the convex-concave nested structure or perforative fastening connection piece being stamped and formed out, and the collector is cut
Face shape is in impulse waveform, and the two sidewalls of the segment pulse of impulse waveform form the clamp structure, impulse waveform along tab
The top of direction of insertion forms the location structure, and one of side wall of the segment pulse is equipped with opening, the connection
Portion is made of the flanging in the outside towards segment pulse on another side wall for being set to the segment pulse, is set on tab
It is equipped with partition seam, tab is equipped in one end insertion segment pulse of partition seam, then turns down the middle section of two partition seams, make
It is bonded with the top surface of interconnecting piece.
2. collector, it is characterised in that: the collector, which is equipped with, to be inserted into and to the tab of insertion for tab along tab insertion section
The thickness direction divided forms the clamp structure of positioning, and to the positioning knot that the tab of insertion is limited along tab direction of insertion block
Structure is additionally provided with the interconnecting piece for forming lamination portion with tab close fit, the cross sectional shape of the collector on collector
In impulse waveform, the two sidewalls of the segment pulse of impulse waveform form the clamp structure, impulse waveform along tab insertion side
To top form the location structure, one of side wall of the segment pulse is equipped with opening, and the interconnecting piece is by setting
The flanging for being placed in the outside towards segment pulse on another side wall of the segment pulse is constituted.
3. the coupling part of a kind of lithium battery, including battery core, collector and tab, collector and tab forms pole piece connection knot
Structure, it is characterised in that: the pole piece connection structure is pole piece connection structure described in the claims 1.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610759833.5A CN106207067B (en) | 2016-08-30 | 2016-08-30 | Pole piece connection structure, pole piece connection method, collector and lithium battery |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610759833.5A CN106207067B (en) | 2016-08-30 | 2016-08-30 | Pole piece connection structure, pole piece connection method, collector and lithium battery |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106207067A CN106207067A (en) | 2016-12-07 |
| CN106207067B true CN106207067B (en) | 2018-12-07 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610759833.5A Active CN106207067B (en) | 2016-08-30 | 2016-08-30 | Pole piece connection structure, pole piece connection method, collector and lithium battery |
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| CN (1) | CN106207067B (en) |
Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP6928739B2 (en) * | 2017-03-07 | 2021-09-01 | 株式会社エンビジョンＡｅｓｃジャパン | Battery pack and battery pack manufacturing method |
| CN115692957A (en) * | 2017-03-07 | 2023-02-03 | 远景Aesc日本有限公司 | Connection auxiliary member, battery pack, and method for manufacturing battery pack |
| KR102157377B1 (en) | 2017-05-25 | 2020-09-17 | 주식회사 엘지화학 | Battery module and battery pack including the same and manufacturing method for battery module |
| KR102172519B1 (en) * | 2017-10-11 | 2020-10-30 | 주식회사 엘지화학 | Bus bar assembly for connecting electrode lead and Battery module including the same |
| CN111180649B (en) * | 2019-12-30 | 2021-06-11 | 合肥国轩高科动力能源有限公司 | Integrated high-temperature decomposition connector and lithium ion battery comprising same |
| CN211428258U (en) * | 2019-12-30 | 2020-09-04 | 合肥国轩高科动力能源有限公司 | External short circuit protection device of lithium ion battery |
| CN111180651B (en) * | 2019-12-30 | 2021-06-11 | 合肥国轩高科动力能源有限公司 | Solderless connector with electrically connected battery cores and lithium ion battery comprising connector |
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|---|---|---|---|---|
| EP0199476A2 (en) * | 1985-04-20 | 1986-10-29 | LUCAS INDUSTRIES public limited company | Alkaline electric storage cells |
| CN101901987A (en) * | 2009-05-26 | 2010-12-01 | 日本压着端子制造株式会社 | Battery connector |
| CN202282409U (en) * | 2011-09-29 | 2012-06-20 | 北京神州远望科技有限公司 | Novel modular structure of power lithium battery unit |
| CN104471745A (en) * | 2012-07-17 | 2015-03-25 | 新神户电机株式会社 | Secondary battery terminal structure and secondary battery |
| CN204558578U (en) * | 2015-05-07 | 2015-08-12 | 中航锂电（洛阳）有限公司 | A kind of flexible-packed battery group and syndeton thereof |
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2016
- 2016-08-30 CN CN201610759833.5A patent/CN106207067B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0199476A2 (en) * | 1985-04-20 | 1986-10-29 | LUCAS INDUSTRIES public limited company | Alkaline electric storage cells |
| CN101901987A (en) * | 2009-05-26 | 2010-12-01 | 日本压着端子制造株式会社 | Battery connector |
| CN202282409U (en) * | 2011-09-29 | 2012-06-20 | 北京神州远望科技有限公司 | Novel modular structure of power lithium battery unit |
| CN104471745A (en) * | 2012-07-17 | 2015-03-25 | 新神户电机株式会社 | Secondary battery terminal structure and secondary battery |
| CN204558578U (en) * | 2015-05-07 | 2015-08-12 | 中航锂电（洛阳）有限公司 | A kind of flexible-packed battery group and syndeton thereof |
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| Publication number | Publication date |
|---|---|
| CN106207067A (en) | 2016-12-07 |
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