CN112247437A - Clamp for welding battery cell and method for welding battery cell - Google Patents
Clamp for welding battery cell and method for welding battery cell Download PDFInfo
- Publication number
- CN112247437A CN112247437A CN202010067339.9A CN202010067339A CN112247437A CN 112247437 A CN112247437 A CN 112247437A CN 202010067339 A CN202010067339 A CN 202010067339A CN 112247437 A CN112247437 A CN 112247437A
- Authority
- CN
- China
- Prior art keywords
- positioning mechanism
- welding
- battery cell
- limiting
- connection 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.)
- Pending
Links
- 238000003466 welding Methods 0.000 title claims abstract description 46
- 238000000034 method Methods 0.000 title claims abstract description 14
- 239000011521 glass Substances 0.000 claims abstract description 12
- 238000012216 screening Methods 0.000 claims abstract description 12
- 238000003825 pressing Methods 0.000 claims description 15
- 230000001681 protective effect Effects 0.000 claims description 7
- 238000005266 casting Methods 0.000 description 4
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 description 3
- 229910052744 lithium Inorganic materials 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 229920006324 polyoxymethylene Polymers 0.000 description 2
- 229910001220 stainless steel Inorganic materials 0.000 description 2
- 239000010935 stainless steel Substances 0.000 description 2
- 229930040373 Paraformaldehyde Natural products 0.000 description 1
- 238000003475 lamination Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000007769 metal material Substances 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- -1 polyoxymethylene Polymers 0.000 description 1
- 229910000679 solder Inorganic materials 0.000 description 1
Images
Classifications
-
- 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
- B23K37/0435—Clamps
- B23K37/0443—Jigs
-
- 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
- B23K20/00—Non-electric welding by applying impact or other pressure, with or without the application of heat, e.g. cladding or plating
- B23K20/10—Non-electric welding by applying impact or other pressure, with or without the application of heat, e.g. cladding or plating making use of vibrations, e.g. ultrasonic welding
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Connection Of Batteries Or Terminals (AREA)
Abstract
The invention relates to the technical field of new energy automobiles, and discloses a clamp for welding a battery cell and a method for welding the battery cell, wherein the clamp comprises a supporting plate (10), and a battery cell positioning mechanism, a lug connecting sheet positioning mechanism and a protection sheet positioning mechanism which are arranged on the supporting plate (10), wherein the battery cell positioning mechanism can position a battery cell (20) on the supporting plate, and the lug connecting sheet positioning mechanism and the protection sheet positioning mechanism can respectively position a lug connecting sheet and a protection sheet relative to the battery cell. The application provides an anchor clamps can guarantee that the relative position between electric core, utmost point ear connection piece and the screening glass on the layer board is correct to guarantee that subsequent welding can accomplish with high efficiency and high accuracy.
Description
Technical Field
The invention relates to the technical field of new energy automobiles, in particular to a clamp for welding a battery cell and a method for welding the battery cell.
Background
The lithium cell is the key technology point of new energy automobile, and wherein the utmost point ear welding of lithium cell is the main problem that influences the lithium cell application, and the problem that exists in traditional bolted connection or the tradition welding can be broken through to present common ultrasonic wave utmost point ear welding form, realizes direct welding to guarantee solder joint welding quality and flow area.
Particularly, in the manufacturing process of the aluminum-shell battery with the lamination process, the tabs with more layers need to be prewelded by an ultrasonic welding machine, the tab connecting sheet is welded with the prewelded tabs, and then the tab connecting sheet is welded on the cover plate of the aluminum-shell battery to form the pole of the aluminum-shell battery. The butterfly welding mode is generally used for the existing lug connecting sheet and lug welding mode, but because relevant part positioning in the welding process depends on artificial positioning for placing or simple positioning identification for placing, the welding consistency is poor, and the efficiency is low.
Disclosure of Invention
The invention aims to solve the problems of difficult positioning and inaccurate positioning in the process of welding various components of a battery in the prior art, and provides a clamp for welding a battery core.
In order to achieve the above object, in one aspect, the present invention provides a fixture for welding a battery cell, where the fixture includes a supporting plate, and a battery cell positioning mechanism, a tab connecting sheet positioning mechanism, and a protection sheet positioning mechanism, which are disposed on the supporting plate, where the battery cell positioning mechanism is capable of positioning the battery cell on the supporting plate, and the tab connecting sheet positioning mechanism and the protection sheet positioning mechanism are capable of positioning the tab connecting sheet and the protection sheet relative to the battery cell, respectively.
Preferably, the battery cell positioning mechanism comprises a limiting strip arranged on the supporting plate, and the limiting strip can be attached to the side surface of the battery cell to position the battery cell.
Preferably, the battery cell positioning structure comprises an adjusting bolt penetrating through the limiting strip, a first long threaded hole extending along the width direction of the limiting strip is formed in the supporting plate, and the adjusting bolt can move in the first long threaded hole.
Preferably, each limiting strip is provided with a plurality of adjusting bolts.
Preferably, the tab and connection piece positioning mechanism comprises a connection piece limiting part, wherein a connection piece limiting frame used for containing the tab and connection piece is formed on the connection piece limiting part, so that the tab and connection piece can be positioned relative to the battery core.
Preferably, utmost point ear connection piece positioning mechanism is still including setting up the connection piece casting die in the spacing frame top of connection piece, the connection piece casting die includes briquetting and spacing post, spacing post rotationally install in the briquetting is in order to move in vertical direction, so that spacing post can move to support to press the setting in the spacing frame of connection piece utmost point ear connection piece's position.
Preferably, the outer surface of the limiting column is provided with threads, a second long threaded hole extending along the length direction of the pressing block is formed in the pressing block, and the limiting column can move in the second long threaded hole.
Preferably, the connecting piece casting die is fixedly connected with the connecting piece limiting part.
Preferably, the protection sheet positioning mechanism comprises a protection sheet limiting frame, and the protection sheet limiting frame is used for accommodating the protection sheet.
A second aspect of the invention provides a method of welding a cell, the method using a fixture for welding a cell as described above, the method comprising: arranging the battery cell in the supporting plate positioning mechanism; arranging the lug connecting sheet in the lug connecting sheet positioning mechanism; arranging the protection sheet in the protection sheet positioning mechanism; and welding the lug of the battery cell, the lug connecting sheet and the protective sheet together.
Through the technical scheme, electric core positioning mechanism has on the anchor clamps that this application provided, utmost point ear connection piece positioning mechanism and screening glass positioning mechanism, thereby can fix a position utmost point ear connection piece and screening glass for electric core, wherein, the positional relationship between each positioning mechanism can set up according to the positional relationship of reality, guarantee electric core, utmost point ear connection piece and screening glass setting back in corresponding positioning mechanism, electric core on the layer board, the relative position between utmost point ear connection piece and the screening glass is correct, thereby guarantee that subsequent welding can be accomplished with high efficiency and high accuracy.
Drawings
Fig. 1 is a schematic view of a fixture for welding of cells according to a preferred embodiment of the present application;
fig. 2 is a schematic view of the back of the fixture for welding of cells of fig. 1;
fig. 3 is a side view of the fixture for welding of cells of fig. 1.
Description of the reference numerals
10-supporting plate 11-handle 12-lifting plate 13-limit strip 14-protective sheet limit frame 15-adjusting bolt 16-limit column 17-connecting sheet limit frame 18-lifting plate handle 20-battery cell
Detailed Description
The following detailed description of embodiments of the invention refers to the accompanying drawings. It should be understood that the detailed description and specific examples, while indicating the present invention, are given by way of illustration and explanation only, not limitation.
The invention provides a clamp for welding a battery cell, which comprises a supporting plate, and a battery cell positioning mechanism, a lug connecting sheet positioning mechanism and a protection sheet positioning mechanism which are arranged on the supporting plate 10, wherein the battery cell positioning mechanism can position the battery cell on the supporting plate 10, and the lug connecting sheet positioning mechanism and the protection sheet positioning mechanism can respectively position a lug connecting sheet and a protection sheet relative to the battery cell.
The application provides an anchor clamps on have electric core positioning mechanism, utmost point ear connection piece positioning mechanism and screening glass positioning mechanism, thereby can fix a position utmost point ear connection piece and screening glass for electric core, wherein, the positional relationship between each positioning mechanism can set up according to the positional relationship of reality, guarantee electric core, utmost point ear connection piece and screening glass setting back in corresponding positioning mechanism, electric core on layer board 10, the relative position between utmost point ear connection piece and the screening glass is correct, thereby guarantee that subsequent welding can be accomplished by high efficiency and high accuracy.
As shown in fig. 1, the cell positioning mechanism includes a limiting strip 13 disposed on the supporting plate 10, and when the cell 20 is disposed, the cell 20 is attached to the limiting strip 13, so as to position the cell 20. In the embodiment shown in fig. 1, two battery cells 20 are disposed on the support plate 10, one side of each battery cell 20 having a tab is disposed opposite to the other side of the battery cell, and a spacing strip 13 is disposed on each of the other three sides of each battery cell to position the battery cells.
The tab connecting piece positioning mechanism comprises a connecting piece limiting part, and a connecting piece limiting frame 17 used for containing the tab connecting piece is formed on the connecting piece limiting part so that the tab connecting piece can be positioned relative to the battery cell 20. Fig. 2 is a perspective view from the rear side of the carrier plate, showing in perspective a connecting lug retaining frame 17 provided on the front side of the carrier plate 10, in which connecting lug retaining frame 17 a lug connecting lug can be arranged, so that the positioning of the lug connecting lug relative to the cell is completed.
Because the position relation between utmost point ear connection piece and the utmost point ear, the front end of utmost point ear connection piece is pressed by utmost point ear easily to cause the tail end perk of utmost point ear connection piece, be unfavorable for the location between utmost point ear connection piece and the electric core. In the preferred embodiment of the present application, the tab connecting piece positioning mechanism further includes a connecting pressing piece disposed above the connecting piece limiting frame 14, as shown in fig. 1 and 3, the connecting pressing piece includes a pressing piece and a limiting post 16, and the limiting post 16 can move up and down relative to the pressing piece so as to move to a position abutting against the tab connecting piece, specifically, a position abutting against the tail end of the tab connecting piece, thereby preventing the tail end of the tab connecting piece from tilting.
Specifically, the outer surface of the limiting column 16 is threaded so as to be screwed into a threaded hole extending in the vertical direction, and therefore the limiting column 16 can be moved in the vertical direction by screwing the limiting column 16, so that the limiting column can be moved to a position abutting against the tab connecting piece. Still preferably, the screw hole on the briquetting is the second long thread hole that extends along the length direction of utmost point ear connection piece, and spacing post 16 can remove at second long thread hole to remove to the position that is located the tail end of utmost point ear connection piece directly over, can accurately support when being convenient for spacing post 16 pushes down and press at the tail end of utmost point ear connection piece.
Wherein, connection piece casting die fixed connection piece locating part, consequently can once place whole connection piece positioning mechanism between two electric cores 20, specifically can adopt integrated into one piece with briquetting and connection piece spacing frame 17, can adopt plastic material more specifically for black polyformaldehyde for example, and spacing post 16 can adopt metal material, for example stainless steel.
Similarly, as shown in fig. 1, the protection sheet positioning mechanism includes a protection sheet limiting frame 14, and the protection sheet limiting frame 14 is used for accommodating the protection sheet, and in a preferred embodiment, the protection sheet positioning mechanism may be configured as a rectangular casing capable of being accommodated between two battery cells 20, and the rectangular casing is fixedly connected with the protection sheet limiting frame 14, and when the rectangular casing is accurately placed between two battery cells 20, the protection sheet limiting frame 14 can be disposed at a specific position, so that the protection sheet can be positioned by using the protection sheet limiting frame 14. Wherein, the top surface of this rectangle casing has the through-hole that is used for making spacing post 16 pass, and spacing post 16 can move up and down through this through-hole.
In addition, as shown in fig. 1 and 3, a pulling plate 12 is arranged above the rectangular casing, the pulling plate 12 is arranged across two battery cells 20, the pulling plate 12 is fixedly connected with the protection sheet positioning mechanism of the rectangular casing, for example, in a bolt connection mode, and a pulling plate handle 18 is arranged on the pulling plate 12, so that after welding is completed, the whole protection sheet positioning mechanism, including the protection sheet limiting frame 14, can be easily removed through the pulling plate handle 18, and then the tab connecting sheet positioning mechanism can be removed.
The protective sheet limit frame and the tab limit frame referred to in this embodiment are both frame bodies having a hollow-out portion for accommodating the protective sheet and the tab connection piece, the protective sheet and the tab connection piece are disposed in the hollow-out portion and supported on the support plate, and the protective sheet limit frame and the tab limit frame play a role in limiting the position of the protective sheet and the tab connection piece with respect to the support plate.
In the preferred embodiment of the present application, the material of the supporting plate 10, the position-limiting strip 13, the lifting plate 12, the connecting piece position-limiting frame 17 and the pressing block may be made of black polyoxymethylene, and the handle 11 and the position-limiting post 16 may be made of stainless steel material, such as SUS 304.
The second aspect of the present application provides a method for welding battery cells, the method utilizes the above-mentioned clamp for battery cell welding, firstly, the battery cell 20 is disposed on the supporting plate 10 and the battery cell 20 is positioned by each spacing strip 13, then the tab connecting piece is disposed in the connecting piece spacing frame 17, and the spacing column 16 is adjusted to enable the spacing column 16 to press against the tail end of the tab connecting piece, then the protection sheet is disposed in the protection sheet spacing frame 14, after the relative positions between the battery cell 20, the tab connecting piece and the protection sheet are fixed, the tab of the battery cell can be welded together with the tab connecting piece and the protection sheet by one welding operation.
The preferred embodiments of the present invention have been described in detail above with reference to the accompanying drawings, but the present invention is not limited thereto. Within the scope of the technical idea of the invention, many simple modifications can be made to the technical solution of the invention. Including each of the specific features, are combined in any suitable manner. The invention is not described in detail in order to avoid unnecessary repetition. Such simple modifications and combinations should be considered within the scope of the present disclosure as well.
Claims (10)
1. The utility model provides a welded anchor clamps for electric core, its characterized in that, anchor clamps include layer board (10) and set up electric core positioning mechanism, utmost point ear connection piece positioning mechanism and screening glass positioning mechanism on layer board (10), electric core positioning mechanism can be in electric core (20) location on the layer board, utmost point ear connection piece positioning mechanism screening glass positioning mechanism can respectively with utmost point ear connection piece, screening glass for electric core location.
2. The clamp for welding of the battery cells according to claim 1, wherein the battery cell positioning mechanism comprises a limiting strip (13) arranged on the supporting plate, and the limiting strip (13) can be attached to a side surface of the battery cell (20) to position the battery cell (20).
3. The clamp for welding of battery cells according to claim 2, characterized in that the battery cell positioning structure comprises an adjusting bolt (15) disposed through the limiting strip (13), the support plate (10) is provided with a first long threaded hole extending along the width direction of the limiting strip (13), and the adjusting bolt (15) can move in the first long threaded hole.
4. The clamp for welding of cells according to claim 3, characterized in that a plurality of adjusting bolts (15) are provided on each of the stop strips (13).
5. The clamp for welding of the battery cell according to claim 1, wherein the tab and connection piece positioning mechanism comprises a connection piece limiting part, and a connection piece limiting frame (17) for accommodating the tab and connection piece is formed on the connection piece limiting part, so that the tab and connection piece can be positioned relative to the battery cell (20).
6. The clamp for welding of cells according to claim 5, wherein the tab connecting plate positioning mechanism further comprises a connecting plate pressing member disposed above the connecting plate limiting frame, the connecting plate pressing member comprising a pressing block and a limiting post (16), the limiting post (16) being rotatably mounted to the pressing block to move in a vertical direction, so that the limiting post (16) can move to a position pressing against the tab connecting plate disposed in the connecting plate limiting frame (17).
7. The clamp for welding of battery cells according to claim 6, characterized in that the outer surface of the limiting column (16) is threaded, the pressing block is provided with a second long threaded hole extending along the length direction of the pressing block, and the limiting column (16) can move in the second long threaded hole.
8. The clamp for welding of cells according to claim 6, characterized in that the connection tab pressing part is fixedly connected with the connection tab limiting part.
9. The jig for welding of battery cells according to claim 1, characterized in that the protection sheet positioning mechanism comprises a protection sheet limiting frame (14), the protection sheet limiting frame (14) being used for accommodating the protection sheet.
10. A method of welding cells, characterized in that it makes use of a clamp for welding cells according to any one of claims 1 to 9, the method comprising:
arranging the battery cell in the supporting plate positioning mechanism;
arranging the lug connecting sheet in the lug connecting sheet positioning mechanism;
arranging the protection sheet in the protection sheet positioning mechanism;
and welding the lug of the battery cell, the lug connecting sheet and the protective sheet together.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010067339.9A CN112247437A (en) | 2020-01-20 | 2020-01-20 | Clamp for welding battery cell and method for welding battery cell |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010067339.9A CN112247437A (en) | 2020-01-20 | 2020-01-20 | Clamp for welding battery cell and method for welding battery cell |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN112247437A true CN112247437A (en) | 2021-01-22 |
Family
ID=74224769
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010067339.9A Pending CN112247437A (en) | 2020-01-20 | 2020-01-20 | Clamp for welding battery cell and method for welding battery cell |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112247437A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115041802A (en) * | 2022-05-26 | 2022-09-13 | 中航锂电（洛阳）有限公司 | Pressing module, pressing device and welding equipment |
| CN115425271A (en) * | 2022-09-15 | 2022-12-02 | 武汉逸飞激光股份有限公司 | Square battery cell protection frame assembling device and assembling method |
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| CN109719385A (en) * | 2019-02-27 | 2019-05-07 | 合肥国轩高科动力能源有限公司 | A kind of circulation transferring jig for battery core ultrasonic bonding |
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| CN203481288U (en) * | 2013-08-23 | 2014-03-12 | 深圳市比亚迪锂电池有限公司 | Lithium ion battery and cover plate module thereof |
| KR20160093447A (en) * | 2015-01-29 | 2016-08-08 | 삼성에스디아이 주식회사 | Method for Manufacturing Secondary Battery |
| CN107848071A (en) * | 2016-05-18 | 2018-03-27 | 株式会社Lg化学 | Lead welding equipment, the battery module manufactured by the lead welding equipment and the battery pack including the battery module |
| CN205989145U (en) * | 2016-07-27 | 2017-03-01 | 中航锂电（洛阳）有限公司 | A kind of lithium battery supersonic welding welding fixture |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN115041802A (en) * | 2022-05-26 | 2022-09-13 | 中航锂电（洛阳）有限公司 | Pressing module, pressing device and welding equipment |
| CN115425271A (en) * | 2022-09-15 | 2022-12-02 | 武汉逸飞激光股份有限公司 | Square battery cell protection frame assembling device and assembling method |
| CN115425271B (en) * | 2022-09-15 | 2024-02-02 | 武汉逸飞激光股份有限公司 | Square cell protection frame assembly device and assembly method |
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Application publication date: 20210122 |