CN113118685A - Novel butterfly welding device - Google Patents
Novel butterfly welding device Download PDFInfo
- Publication number
- CN113118685A CN113118685A CN202110244611.0A CN202110244611A CN113118685A CN 113118685 A CN113118685 A CN 113118685A CN 202110244611 A CN202110244611 A CN 202110244611A CN 113118685 A CN113118685 A CN 113118685A
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- Prior art keywords
- limiting
- tightening
- plate
- battery cell
- pressure head
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K37/00—Auxiliary devices or processes, not specially adapted to a procedure covered by only one of the preceding main groups
- B23K37/04—Auxiliary devices or processes, not specially adapted to a procedure covered by only one of the preceding main groups for holding or positioning work
- B23K37/0426—Fixtures for other work
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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
- H01M10/04—Construction or manufacture in general
- H01M10/0404—Machines for assembling batteries
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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
- H01M10/058—Construction or manufacture
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K2101/00—Articles made by soldering, welding or cutting
- B23K2101/36—Electric or electronic devices
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- 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
-
- 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
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
- Y02P70/50—Manufacturing or production processes characterised by the final manufactured product
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- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Mechanical Engineering (AREA)
- Connection Of Batteries Or Terminals (AREA)
- Secondary Cells (AREA)
Abstract
The invention discloses a novel butterfly welding device which comprises a positioning platform, a welding platform and a welding platform, wherein the positioning platform is used for positioning a battery cover plate, a dry battery core and a dry battery core connecting sheet; the battery cell limiting and pre-tightening structure is used for positioning the dry battery cell; the pressure head structure is used for positioning the battery cover plate and the dry electric core connecting sheet; the battery cell limiting and pre-tightening structure comprises a pre-tightening plate, a pre-tightening spring and a guide post, wherein the pre-tightening spring is sleeved on the guide post and used for driving the pre-tightening plate to extrude the dry battery cell, the limiting structure is used for limiting the moving distance of the pre-tightening plate, and the pre-tightening spring is always in a compressed state. Aiming at the technical problem of inaccurate position limitation of a dry battery cell in the prior art, the invention provides a novel butterfly welding device which can play a role of repeatedly limiting the position of the dry battery cell and ensure the consistency of the position of the dry battery cell.
Description
Technical Field
The invention relates to the technical field of lithium batteries, in particular to a novel butterfly welding device.
Background
The main core components of the aluminum-shell battery comprise a battery core, an aluminum shell, a cover plate, electrolyte, a connecting sheet, a PET film, an adhesive tape and the like, the importance of the performance and the safety of the battery core is self-evident, the battery safety, the electrical performance (capacity, energy, internal resistance and the like) and the electrochemical reaction are directly determined by the battery core assembling quality, and the dry battery assembling quality, the ultrasonic welding quality, the laser welding quality and the related raw material quality are mainly and directly influenced by the assembling mode of the battery core.
In addition, with the development of the industry, the requirements of the related national new energy standards are met, the energy density of the battery is required to be higher and higher, lithium battery production enterprises also follow the development of the industry, the larger the energy density of the battery is, the more and more problems are faced under the background that the larger the energy density of the battery is, firstly, the tab welding ultrasonic equipment for welding tabs at home and abroad is basically within 6.5KW at present, the larger the energy density is, the more the number of the battery pole pieces is, so that one battery cell cannot complete tab welding at one time, and therefore butterfly welding is the mainstream of development along. Secondly, the more the energy density is made, the larger the size of the battery is, the higher the space utilization rate of the content of the battery core is, the higher the difficulty of entering the shell is, and the requirement on the consistency of the dry battery core is higher and higher.
Compared with butterfly welding and dry cell assembly quality, the current lithium battery industry basically adopts a dry cell (namely, positive and negative pole pieces and a diaphragm are laminated or coiled into a cell) firstly, a pole lug of the dry cell is welded with a pole lug outside a production cell, the current aluminum shell battery basically adopts a laser welding process, a plurality of dry cells are welded with a connecting sheet by ultrasonic welding preferentially, then the dry cell with the connecting sheet is connected with a cover plate pole, and the connection mode is laser welding basically.
Disclosure of Invention
1. Technical problem to be solved by the invention
Aiming at the technical problem of inaccurate position limitation of a dry battery cell in the prior art, the invention provides a novel butterfly welding device which can play a role of repeatedly limiting the position of the dry battery cell and ensure the consistency of the position of the dry battery cell.
2. Technical scheme
In order to solve the problems, the technical scheme provided by the invention is as follows:
a novel butterfly welding device comprises a positioning platform, a welding platform and a welding platform, wherein the positioning platform is used for positioning a battery cover plate, a dry battery core and a dry battery core connecting sheet; the battery cell limiting and pre-tightening structure is used for positioning the dry battery cell; the pressure head structure is used for positioning the battery cover plate and the dry electric core connecting sheet; the battery cell limiting and pre-tightening structure comprises a pre-tightening plate, a pre-tightening spring and a guide post, wherein the pre-tightening spring is sleeved on the guide post and used for driving the pre-tightening plate to extrude the dry battery cell, the limiting structure is used for limiting the moving distance of the pre-tightening plate, and the pre-tightening spring is always in a compressed state.
Optionally, limit structure is including the limiting plate that is located the locating platform outside, guide post one end links firmly on the pretension board, and the other end links firmly on the limiting plate, the last guide way that has of locating platform, the last guide bearing who matches with the guide post of installing of locating platform, guide bearing offsets in order to restrict the outside action of pretension spring with pretension spring outer end.
Optionally, the device further comprises a handle for controlling the action of the limiting plate.
Optionally, a limiting strip is arranged on the handle, a limiting groove matched with the limiting strip is formed in the positioning platform, the limiting strip can slide in the limiting groove until the limiting strip abuts against the end of the limiting groove, and the pre-tightening plate is located at the pre-tightening position.
Optionally, the handle and the limiting plate are rotatably connected, and the positioning platform is provided with a through groove which is staggered with the limiting groove at a certain angle.
Optionally, the battery cell limiting and pre-tightening structure is arranged on each of two sides of the positioning platform.
Optionally, the pressure head structure includes the pressure head, be equipped with a plurality of guide bars on the locating platform, be equipped with a plurality of and guide post one-to-one complex guiding hole on the pressure head.
Optionally, the pressure head includes first pressure head and the second pressure head that sets up from top to bottom, but first pressure head and second pressure head relative motion just are equipped with a plurality of expanding spring, the guiding hole is located on the second pressure head.
Optionally, the lower end opening of the guide hole is flared.
Optionally, a plurality of stoppers for limiting the dry battery cell from sliding laterally are arranged on the positioning platform.
3. Advantageous effects
Compared with the prior art, the technical scheme provided by the invention has the following beneficial effects:
(1) this novel butterfly welding device is because limit structure's limiting displacement guarantees that the pretension board stops at fixed position at every turn, and the deformation length at every turn of pretension spring keeps fixed, and the pretightning force release certain degree of pretension spring just can not release again, and the pretightning force that produces when having guaranteed every turn location is unanimous, plays the effect of repeated spacing dry electric core position, guarantees the uniformity of doing electric core position.
(2) This novel butterfly welding device can effectively avoid the dry battery spacing inaccurate dry core to go into the shell and pull and go into the shell difficult, leads to dry core utmost point ear fracture and utmost point ear to bump the wall and lead to phenomenons such as short circuit, also is favorable to producing mass production and reduces risks such as artificial error, has improved the product quality, guarantees electric core inner space uniformity, ensures that electric core inside annotates liquid volume and performance parameter also ensures the battery security.
Drawings
Fig. 1 is a schematic structural diagram of a novel butterfly welding device according to an embodiment of the present invention;
fig. 2 is a schematic top view of a novel butterfly welding device according to an embodiment of the present invention;
FIG. 3 is a schematic cross-sectional view of a novel butterfly welding device according to an embodiment of the invention;
fig. 4 is a schematic structural diagram of a cell limiting and pre-tightening structure in the novel butterfly welding device according to the embodiment of the present invention;
fig. 5 is a schematic cross-sectional view of a ram in a novel butterfly welding apparatus according to an embodiment of the invention.
1. Positioning the platform; 1a, a guide groove; 1b, a limiting groove; 1c, a through groove; 2. a battery cell limiting and pre-tightening structure; 21. pre-tightening the plate; 22. pre-tightening the spring; 23. a guide post; 3. a pressure head; 3a, a guide hole; 31. a first ram; 32. a second ram; 4. a limiting plate; 5. a guide bearing; 6. a handle; 61. a limiting strip; 62. a clamp spring; 7. a guide bar; 8. and a stop block.
Detailed Description
For a further understanding of the present invention, reference is made to the following detailed description taken in conjunction with the accompanying drawings 1-5 and examples.
With reference to fig. 1-5, the novel butterfly welding device of the present embodiment includes a positioning platform 1 for positioning a battery cover plate, a dry battery cell and a dry battery cell connecting sheet; the battery cell limiting and pre-tightening structure 2 is used for positioning the dry battery cell; the pressure head structure is used for positioning the battery cover plate and the dry electric core connecting sheet; the battery cell limiting and pre-tightening structure 2 comprises a pre-tightening plate 21, a pre-tightening spring 22 and a guide post 23, the pre-tightening plate 21 is located on the inner side of the positioning platform 1 and can move towards one side to dry the battery cell in an extrusion mode, the pre-tightening spring 22 is sleeved on the guide post 23, the guide post 23 can move relative to the positioning platform 1 to achieve the purpose of synchronous movement with the pre-tightening plate 21, the pre-tightening spring 22 is used for driving the pre-tightening plate 21 to dry the battery cell in the extrusion mode, the limiting structure is used for limiting the moving distance of the pre-tightening plate 21, and the pre-tightening spring 22 is always.
The butterfly welding device drives the pre-tightening plate 21 to extrude a dry battery cell through the elastic acting force of the pre-tightening spring 22, the pre-tightening plate 21 is always perpendicular to the dry battery cell and extrudes the dry battery cell through the guiding action of the guide post 23, and due to the limiting action of the limiting structure, the pre-tightening plate 21 is guaranteed to stop at a fixed position every time, the deformation length of the pre-tightening spring 22 keeps fixed every time, the pre-tightening force of the pre-tightening spring 22 is released to a certain degree and is not released any more, the pre-tightening force generated in each positioning is guaranteed to be consistent, the effect of repeatedly limiting the position of the dry battery cell is achieved, and the consistency of the position of the; the pressing head structure fully presses the connecting sheet onto the battery cell pole, so that the processing errors of the battery connecting sheet and the pole are avoided; this novel butterfly welding device can effectively avoid the dry battery spacing inaccurate dry core to go into the shell and pull and go into the shell difficult, leads to dry core utmost point ear fracture and utmost point ear to bump the wall and lead to phenomenons such as short circuit, also is favorable to producing mass production and reduces risks such as artificial error, has improved the product quality, guarantees electric core inner space uniformity, ensures that electric core inside annotates liquid volume and performance parameter also ensures the battery security.
As an alternative scheme of the invention, the limiting structure comprises a limiting plate 4 positioned at the outer side of a positioning platform 1, a pretension plate 21 and the limiting plate 4 are respectively positioned at the inner side and the outer side of the same end part of the positioning platform 1, one end of a guide post 23 is fixedly connected to the pretension plate 21, the other end of the guide post is fixedly connected to the limiting plate 4, a guide groove 1a is arranged on the positioning platform 1, the guide post 2 penetrates through the guide groove 1a, a guide bearing 5 matched with the guide post 23 is arranged on the positioning platform 1, the guide bearing 5 is arranged at an opening at the outer end of the guide groove 1a, the guide bearing 5 is abutted against the outer end of a pretension spring 22 to limit the outward movement of the pretension spring 22, when the limiting plate 4 is abutted against the end part of the positioning platform 1, the pretension plate 21 cannot move inwards continuously, because the limiting plate 4 and the pretension plate 21 are, the deformation length of the pre-tightening spring 22 is also unchanged every time, so that the position of the dry battery core is fixed and unchanged every time.
As an alternative of the invention, in order to facilitate pulling the limit plate 4, a handle 6 for controlling the action of the limit plate 4 is also included.
As an alternative of the invention, a limiting strip 61 is arranged on the handle 6, the limiting strip 61 is arranged perpendicular to the movement direction of the handle 6 and is fixedly connected with the handle 6, a limiting groove 1b matched with the limiting strip 61 is arranged on the positioning platform 1, an opening is formed in one side, close to the handle 6, of the limiting groove 1b so as to facilitate the passing in and out of the limiting strip 61, the limiting strip 61 can slide in the limiting groove 1b until the limiting strip abuts against the end part of the limiting groove 1b, at the moment, the pre-tightening plate 21 is located at the pre-tightening position, in the mode, the limiting plate 4 is not contacted with the end part of the positioning platform 1 all the time, and when the limiting strip 61 abuts against the end part of the limiting groove 1b, the position of the limiting plate 4 is fixed, so.
As an alternative of the invention, the handle 6 is rotatably connected with the limit plate 4, the two sides of the limit plate 4 on the handle 6 are respectively sleeved with the clamp springs 62, the clamp springs 62 on the two sides simultaneously abut against the limit plate 4 so that the handle 6 can drive the limit plate 4 to synchronously move, and simultaneously, the handle 6 can also rotate relative to the limit plate 4, the positioning platform 1 is provided with a through groove 1c which is staggered with a certain angle with the limit groove 1b, the through groove 1c penetrates through the end part of the positioning platform 1, compared with the case that the pre-tightening position of the pre-tightening plate 21 is controlled by abutting the limit plate 4 against the positioning platform 1, when the handle 6 is not used, the handle 6 can be pulled outwards to draw out the limit strip 61 from the limit groove 1b and rotate for a certain angle so that the limit strip is aligned with the through groove 1c, at this time, the handle 6 is loosened, the limit strip 61 can enter the through groove 1c, and the pre-tightening spring 22, the initial state of the preload spring 22 when not in use helps to ensure preload due to compression during subsequent use.
As an alternative of the present invention, in order to simultaneously realize the positioning of two dry battery cells, the battery cell limiting and pre-tightening structures 2 are respectively provided with one on both sides of the positioning platform 1.
As an alternative of the invention, the pressure head structure comprises a pressure head 3, a plurality of guide rods 7 are arranged on the positioning platform 1, a plurality of guide holes 3a matched with the guide posts 7 one by one are arranged on the pressure head 3, the guide rods 7 are matched with the guide holes 3a to limit the movement direction of the pressure head 3, the pressure head 3 descends under the extrusion of an external cylinder to extrude the battery cover plate and the dry electric core connecting sheet to realize positioning, and the dry electric core connecting sheet is placed right above the battery cover plate.
As an alternative of the present invention, the pressing head 3 includes a first pressing head 31 and a second pressing head 32 which are arranged up and down, the first pressing head 31 and the second pressing head 32 are movably connected, that is, the first pressing head 31 and the second pressing head 32 can move relatively, the first pressing head 31 and the second pressing head 32 are provided with a plurality of extension springs, the guide hole 3a is arranged on the second pressing head 32, the pressing head 3 descends under the extrusion of the cylinder until the guide rod 7 passes through the second pressing head 32 to abut against the first pressing head 31, at this time, the first pressing head 31 cannot descend continuously, and the second pressing head 32 fully compresses the battery cover plate and the dry electric core connecting sheet which are arranged below under the elastic force of the extension springs, so as to ensure that the welding object is fully contacted with the welding object, and avoid the phenomena of insufficient welding, explosion and the like.
As an alternative of the present invention, in order to facilitate the guide rod 7 to enter the guide hole 3a, the opening at the lower end of the guide hole 3a is flared, and the flared guide hole 3a has a certain deviation rectifying capability, so that the guide rod 7 and the pressure head 3 can be effectively prevented from colliding with each other.
As an alternative of the present invention, a plurality of stoppers 8 for limiting the lateral sliding of the dry battery cell are disposed on the positioning platform 1, and a positioning groove for the dry battery cell is formed between the plurality of stoppers 8.
The present invention and its embodiments have been described above schematically, without limitation, and what is shown in the drawings is only one of the embodiments of the present invention, and the actual structure is not limited thereto. Therefore, if the person skilled in the art receives the teaching, without departing from the spirit of the invention, the person skilled in the art shall not inventively design the similar structural modes and embodiments to the technical solution, but shall fall within the scope of the invention.
Claims (10)
1. The utility model provides a novel butterfly welds device which characterized in that: comprises that
The positioning platform is used for positioning the battery cover plate, the dry battery core and the dry battery core connecting sheet;
the battery cell limiting and pre-tightening structure is used for positioning the dry battery cell;
the pressure head structure is used for positioning the battery cover plate and the dry electric core connecting sheet;
the battery cell limiting and pre-tightening structure comprises a pre-tightening plate, a pre-tightening spring and a guide post, wherein the pre-tightening spring is sleeved on the guide post and used for driving the pre-tightening plate to extrude the dry battery cell, the limiting structure is used for limiting the moving distance of the pre-tightening plate, and the pre-tightening spring is always in a compressed state.
2. The novel butterfly welding device of claim 1, characterized in that: the limiting structure comprises a limiting plate located outside the positioning platform, one end of the guide post is fixedly connected to the pre-tightening plate, the other end of the guide post is fixedly connected to the limiting plate, the positioning platform is provided with a guide groove, the positioning platform is provided with a guide bearing matched with the guide post, and the guide bearing is abutted to the outer end of the pre-tightening spring to limit the outward movement of the pre-tightening spring.
3. The novel butterfly welding device of claim 2, characterized in that: the handle is used for controlling the limiting plate to act.
4. The novel butterfly welding device of claim 3, characterized in that: the handle is provided with a limiting strip, the positioning platform is provided with a limiting groove matched with the limiting strip, the limiting strip can slide in the limiting groove until the limiting strip abuts against the end part of the limiting groove, and the pre-tightening plate is located at a pre-tightening position at the moment.
5. The novel butterfly welding device of claim 4, characterized in that: the handle is rotatably connected with the limiting plate, and the positioning platform is provided with a through groove which is staggered with the limiting groove at a certain angle.
6. The novel butterfly welding device of claim 1, characterized in that: the battery cell limiting and pre-tightening structure is arranged on each of two sides of the positioning platform.
7. The novel butterfly welding device according to any one of claims 1 to 6, characterized in that: the pressure head structure includes the pressure head, be equipped with a plurality of guide bars on the locating platform, be equipped with a plurality of and guide post one-to-one complex guiding hole on the pressure head.
8. The novel butterfly welding device of claim 7, characterized in that: the pressure head includes first pressure head and the second pressure head that sets up from top to bottom, but first pressure head and second pressure head relative motion just are equipped with a plurality of expanding spring, the guiding hole is located on the second pressure head.
9. The novel butterfly welding device of claim 7, characterized in that: the opening at the lower end of the guide hole is in a flaring shape.
10. The novel butterfly welding device of claim 1, characterized in that: and a plurality of stop blocks for limiting the lateral sliding of the dry battery cell are arranged on the positioning platform.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110244611.0A CN113118685B (en) | 2021-03-05 | 2021-03-05 | Novel butterfly welds device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110244611.0A CN113118685B (en) | 2021-03-05 | 2021-03-05 | Novel butterfly welds device |
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| Publication Number | Publication Date |
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| CN113118685A true CN113118685A (en) | 2021-07-16 |
| CN113118685B CN113118685B (en) | 2023-06-02 |
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| CN202110244611.0A Active CN113118685B (en) | 2021-03-05 | 2021-03-05 | Novel butterfly welds device |
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| CN211840590U (en) * | 2020-03-13 | 2020-11-03 | 中瑞联科(天津)新能源技术有限公司 | Laser welding pressing plate for modular battery module |
| CN111900299A (en) * | 2020-08-12 | 2020-11-06 | 浙江南都电源动力股份有限公司 | Aluminum-shell battery module frame and welding tool thereof |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202550005U (en) * | 2012-04-23 | 2012-11-21 | 中航锂电（洛阳）有限公司 | Battery cell retaining clamp |
| CN204075519U (en) * | 2014-09-01 | 2015-01-07 | 惠州Tcl金能电池有限公司 | Battery pole ear auxiliary device for laser welding |
| CN206717300U (en) * | 2017-05-16 | 2017-12-08 | 宁德时代新能源科技股份有限公司 | Battery core welding tooling |
| CN206898683U (en) * | 2017-07-12 | 2018-01-19 | 鹤壁市诺信电子有限公司 | A kind of lithium battery group welding clamp |
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| CN209272804U (en) * | 2018-11-07 | 2019-08-20 | 力信（江苏）能源科技有限责任公司 | Lithium ion battery butterfly welds positioning tool |
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| CN211840590U (en) * | 2020-03-13 | 2020-11-03 | 中瑞联科(天津)新能源技术有限公司 | Laser welding pressing plate for modular battery module |
| CN111900299A (en) * | 2020-08-12 | 2020-11-06 | 浙江南都电源动力股份有限公司 | Aluminum-shell battery module frame and welding tool thereof |
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| Publication number | Publication date |
|---|---|
| CN113118685B (en) | 2023-06-02 |
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