CN108581247B - Battery welding fixture, welding equipment and welding process - Google Patents
Battery welding fixture, welding equipment and welding process Download PDFInfo
- Publication number
- CN108581247B CN108581247B CN201810639070.XA CN201810639070A CN108581247B CN 108581247 B CN108581247 B CN 108581247B CN 201810639070 A CN201810639070 A CN 201810639070A CN 108581247 B CN108581247 B CN 108581247B
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- Prior art keywords
- welding
- positioning
- groove
- battery
- jig
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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
- B23K26/00—Working by laser beam, e.g. welding, cutting or boring
- B23K26/70—Auxiliary operations or equipment
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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
- B23K26/00—Working by laser beam, e.g. welding, cutting or boring
- B23K26/20—Bonding
- B23K26/21—Bonding by welding
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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
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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
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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
- 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
Abstract
The invention belongs to the field of lithium ion batteries, and discloses a battery welding fixture, welding equipment and a welding process. The jig is characterized in that a first positioning groove and a second positioning groove which are used for positioning the battery cell are symmetrically arranged on the jig body, and a limiting groove used for positioning the protection board is arranged between the first positioning groove and the second positioning groove. The problem of utmost point ear can not be fixed a position on the pad accurately is solved, the problem of the rosin joint of easily appearing in having solved laser welding, having exploded the welding has improved the yield of laser welding.
Description
Technical Field
The invention relates to the technical field of lithium ion batteries, in particular to a battery welding clamp, welding equipment and a welding process.
Background
Polymer lithium ion batteries are increasingly used in various electrical products due to their higher mass energy density and higher safety, and users have higher requirements for battery capacity, current and voltage, so that a plurality of batteries need to be connected in series or in parallel to meet the requirement for improving battery capacity or voltage. The existing lithium ion battery generally needs to be welded with a protection plate, and the welding quality of the lithium ion battery has great influence on the performance of the final product.
In the welding process, a clamp is needed to fix the battery core tab and the protection plate, but in the existing welding process of the two batteries with the serial/parallel structure, one battery and the protection plate are welded firstly, then the clamp is rotated, and then the protection plate and the other battery are welded, in the rotating process, the tab may not be accurately positioned in the welding area of the bonding pad on the protection plate, and the risks of insufficient welding and explosion welding are increased.
Therefore, it is necessary to provide a jig for welding the protection plates and the tabs in the two series/parallel structure battery.
Disclosure of Invention
The technical problem to be solved by the invention is as follows: overcome and can not accurate location when solving among the prior art battery and protection shield welding, and the problem of rosin joint, deep-fry welding easily appears, provide the welding jig of two cluster/parallel structure batteries, be equipped with the constant head tank of electric core and protection shield among this welding jig, reduced the risk that rosin joint, deep-fry welding appear, can effectively improve the solder joint density on the protection shield to improve the joint strength between protection shield and the battery, improve the stability in use of these two cluster/parallel structure batteries.
The invention also provides welding equipment and a welding process.
The invention provides a technical scheme for solving the technical problem, which comprises the following steps:
a battery welding fixture comprises a positioning fixture body, wherein a first positioning groove and a second positioning groove for positioning a battery core are arranged on the positioning fixture body, and a limiting groove for positioning a protective plate is arranged between the first positioning groove and the second positioning groove; the positioning jig body is perpendicular to one side wall of the limiting groove is connected with an insulating structure, the insulating structure comprises an insulating baffle capable of winding the jig body to rotate, and the insulating baffle is arranged on the protective plate to prevent short circuit of oppositely arranged lugs during welding.
As an improvement of the above technical solution, the limiting groove includes a limiting hole penetrating through the jig body and an avoiding groove capable of accommodating the lead of the protection plate, and a supporting portion for placing the protection plate is extended from the side wall of the limiting hole to the limiting groove.
As an improvement of the above technical solution, positioning blocks are disposed in the first positioning groove and the second positioning groove, the positioning blocks are abutted to one ends of the battery cell different from the tab, and the positioning blocks are adjustable relative to the jig body.
As an improvement of the above technical solution, an empty slot is formed at the bottom of the first positioning slot or the second positioning slot, and an inductor for inducing the electric core to be in place is arranged in the empty slot.
As an improvement of the technical scheme, the positioning jig body is perpendicular to one side wall of the limiting groove and is connected with an insulating structure, the insulating structure comprises an insulating baffle capable of rotating around the jig body, and the insulating baffle is arranged on the protective plate during welding to prevent short circuit of oppositely arranged lugs.
As a further improvement of the technical scheme, the insulation structure further comprises a fixing seat and a fixing block rotatably connected with the fixing seat, the insulation baffle is fixed on the fixing block through a locking device, and the insulation baffle is enabled to be separated and oppositely arranged through rotation of the fixing block, so that the tabs are short-circuited.
The welding equipment comprises a laser welding device and the battery welding fixture, wherein the laser welding device is provided with a pressing claw used for pressing a pole lug and a protection plate.
As the improvement of above-mentioned technical scheme, press the claw including pressing claw head and installation department, and connect the connecting portion of pressing claw head, installation department, press the claw head to include two crimping portion, crimping portion will utmost point ear compress tightly in order to supply on the pad laser welding device carries out the welding action.
A welding process utilizes the welding equipment, and comprises the following steps:
s1: placing a protection plate in the limiting groove;
s2: rotating the insulating baffle to be in a state of abutting against the protection plate;
s3: checking the flatness of the part of the lug, which is exposed out of the battery core, and sequentially placing the battery core into the first positioning groove and the second positioning groove, wherein the welding surfaces of the lug are respectively opposite to the welding plate of the protection plate;
s4: the positioning jig rotates to the position below the laser welding device, the pressing claw presses downwards, and the laser welding device emits light to perform welding.
As an improvement of the above technical solution, in the step S3, an empty slot is formed at the bottom of the second positioning slot, and an inductor for inducing the electric core to be in place is arranged in the empty slot.
The beneficial technical effects of the invention are as follows: this a welding jig for two cluster/parallel structure batteries includes the pressure claw on positioning jig and the laser welding device, is equipped with the first constant head tank of restriction electric core, second constant head tank and is used for restricting the spacing groove of protection shield on positioning jig's the tool body, is convenient for fix a position utmost point ear and protection shield in order to carry out laser welding, has solved utmost point ear and can not fix a position the problem on the pad accurately, has effectively reduced the risk that rosin joint, deep-fry welding appear, has improved laser welding's yield.
Drawings
In order to more clearly illustrate the technical solution in the embodiments of the present invention, the drawings used in the description of the embodiments will be briefly described below.
Fig. 1 is a perspective view of a welding jig according to an embodiment of the present invention.
Fig. 2 is a plan view of a welding apparatus according to an embodiment of the present invention with a protective plate placed thereon.
Fig. 3 is a schematic structural view of a pressing claw according to an embodiment of the present invention.
Detailed Description
The conception, the specific structure and the technical effects of the present invention will be clearly and completely described below in conjunction with the embodiments and the accompanying drawings to fully understand the objects, the schemes and the effects of the present invention. It should be noted that the embodiments and features of the embodiments in the present application may be combined with each other without conflict. Furthermore, the descriptions of the upper, lower, left, right, etc. used in the present invention are only relative to the positional relationship of the components of the present invention with respect to each other in the drawings.
FIG. 1 is a perspective view of a welding fixture in accordance with one embodiment of the present invention; FIG. 2 is a top view of a welding apparatus of one embodiment of the present invention with a protective plate placed; fig. 3 is a schematic structural view of a pressing claw according to an embodiment of the present invention.
Referring to fig. 1, a welding fixture for welding a protection plate and a battery cell when the protection plate is placed on a battery with a two-string/parallel structure is shown, the protection plate includes a bottom plate, a pad arranged on the bottom plate, and a wire connected with the bottom plate, and the battery cell includes a tab. The welding fixture is used for positioning the battery cell and the protection plate so as to facilitate laser welding of the tab and the welding plate.
This welding jig includes positioning jig body 100, is equipped with first constant head tank 110 and the second constant head tank 120 that is used for fixing a position electric core on the positioning jig body 100, still is equipped with the spacing groove that is used for the location protection shield, and the spacing groove is located between first constant head tank 110, the second constant head tank 120.
The first positioning groove 110 and the second positioning groove 120 are provided with positioning blocks 111(121), the positioning blocks 111(121) are abutted against the ends of the battery cells different from the tabs, and the positioning blocks 111(121) are adjustable relative to the jig body 100 to adapt to the battery cells with different lengths. And the two sides of the first positioning groove 110 and the second positioning groove 120 are provided with a handle groove 112(122) for taking out the cell conveniently. An empty slot (not shown in the figure) is formed at the bottom of the first positioning slot 110 or the second positioning slot 120, and an inductor for inducing the electric core to be in place is arranged in the empty slot. In this embodiment, the dead slot is seted up on the second constant head tank, correspondingly, and first constant head tank and second constant head tank are put into in proper order to the manual work with electric core, loosen the hand after, the inductor triggers laser welding device, and laser welding device carries out the welding action according to the feedback of inductor.
In this embodiment, four square pads are fixedly disposed on the strip-shaped bottom plate, the wire is disposed at one end of the bottom plate along the length direction, and the functional component is fixedly disposed on the surface of the bottom plate, which is different from the pads. The limiting groove comprises a limiting hole 131 penetrating through the jig body 100 and an avoiding groove 132 capable of containing a lead, and a supporting portion 1311 for placing a protective plate extends from the side wall of the limiting hole 131 to the limiting groove. The functional elements on the bottom plate are accommodated in the limiting holes 131, and the wires are regularly arranged in the avoiding grooves 132.
The positioning seat 140 for limiting the insulating baffle is further embedded in the limiting groove, and a clamping groove 141 for clamping the insulating baffle 210 is formed in the positioning seat 140. Specifically, the positioning seat 140 includes a bracket, and a mounting hole for the bracket to be embedded is formed in the limiting groove, and preferably, the mounting hole is formed in the avoiding groove 132, and the lead passes through a gap between the brackets and is fixed in the avoiding groove.
Fig. 2 is a plan view of a welding apparatus according to an embodiment of the present invention, including a laser welding device provided with pressing claws 300 for pressing a tab and a protection plate. The positioning fixture body 100 is provided with a first positioning groove 110 and a second positioning groove 120, and the insulating structure 200 is fixed on the sidewall of the positioning fixture body 100.
Fig. 3 shows a schematic structural diagram of a clamping jaw according to an embodiment of the present invention, and referring to fig. 3, a clamping jaw 300 includes a clamping jaw head 310, a mounting portion 330, and a connecting portion 320 connecting the clamping jaw head 310 and the mounting portion 330, in this embodiment, each clamping jaw head 310 includes two crimping portions 311, each clamping jaw head 310 corresponds to one pad, and the two crimping portions 311 respectively contact with two ends of a tab so that a contact surface of the tab is in full contact with the pad. The mounting portion 330 has a mounting hole 331 formed therethrough, and the pressing claw 300 is adjustably fixed to the laser welding apparatus through the mounting hole 331. In this embodiment, the shape of the connecting portion 320 can be adjusted according to the welding requirement, and preferably, four pressing claws are fixed on the same side of the laser welding device.
The laser welding device further comprises a rotary table (not shown in the figure), the welding fixtures are evenly distributed along the circumferential direction of the rotary table, and when the rotary table drives the welding fixtures to be welded to rotate to a welding position, laser welding is carried out to weld the lug and the protective plate.
The invention also provides a welding process for the two serial/parallel structure batteries, which specifically comprises the following steps:
s1: placing the protection plate in the limiting groove;
s2: rotating the insulating baffle to be in a state of abutting against the protection plate;
s3: checking the flatness of the part of the lug, which is exposed out of the battery core, sequentially placing the battery core into the first positioning groove and the second positioning groove, wherein the welding surfaces of the lug are respectively opposite to the welding pads;
s4: and the positioning jig is rotated to the lower part of the laser welding device, the pressing claw is pressed downwards, and the laser welding head emits light for welding.
Specifically, the protection plate is placed in the limiting groove, and the insulating baffle is rotated to be in a state of abutting against the protection plate; the battery cell with the electrode lugs free of wrinkles and overlapping and exposed in size meeting the requirements is sequentially placed into a first positioning groove and a second positioning groove, an inductor is arranged in the second positioning groove, after hands are loosened, the inductor triggers a laser welding device, a turntable rotates and drives a positioning jig to rotate to a welding position, and the positioning jig rotates to the position below a laser welding head; the pressing claw presses downwards, and the laser welding head emits light to weld the lug on the protective plate.
According to the welding fixture for the two series/parallel structure batteries, the first positioning groove and the second positioning groove for limiting the battery core and the limiting groove for limiting the protection plate are arranged on the positioning fixture body, the insulating structure for blocking the short circuit of the two opposite tabs is further arranged, the tabs and the protection plate are conveniently welded by laser, the problem that electrode bars need to be replaced due to the use of traditional spot welding is solved, the tabs can be accurately positioned on the welding pad, the risks of insufficient welding and explosion welding are effectively reduced, and the yield of laser welding is improved.
While the invention has been particularly shown and described with reference to a preferred embodiment, it will be understood by those skilled in the art that various changes in form and detail may be made therein without departing from the spirit and scope of the invention as defined by the appended claims.
Claims (9)
1. A battery welding fixture is characterized by comprising a positioning fixture body, wherein a first positioning groove and a second positioning groove for positioning a battery core are arranged on the positioning fixture body, and a limiting groove for positioning a protective plate is arranged between the first positioning groove and the second positioning groove; the positioning jig body is perpendicular to one side wall of the limiting groove is connected with an insulating structure, the insulating structure comprises an insulating baffle capable of winding the jig body, the battery core comprises a tab, and during welding, the insulating baffle is arranged on the protective plate to prevent relative setting of the tab short circuit.
2. The battery welding jig of claim 1, wherein the limiting groove comprises a limiting hole penetrating through the jig body and an avoiding groove capable of accommodating the lead of the protection plate, and a supporting portion for placing the protection plate extends from a side wall of the limiting hole to the limiting groove.
3. The battery welding jig of claim 1, wherein positioning blocks are disposed in the first positioning groove and the second positioning groove, the positioning blocks abut against ends of the battery core, which are different from the tabs, and the positioning blocks are adjustable relative to the jig body.
4. The battery welding fixture according to claim 1, wherein a hollow groove is formed at the bottom of the first positioning groove or the second positioning groove, and an inductor for inducing the battery core to be in place is arranged in the hollow groove.
5. The battery welding jig of claim 1, wherein the insulation structure further comprises a fixing seat and a fixing block rotatably connected with the fixing seat, the insulation baffle is fixed on the fixing block through a locking device, and the fixing block is rotated to enable the tabs oppositely arranged in the insulation baffle to be short-circuited.
6. A welding apparatus comprising a laser welding device, characterized by further comprising the battery welding jig of any one of claims 1 to 5, the laser welding device being provided with a pressing claw for pressing a tab and a protection plate.
7. The welding apparatus according to claim 6, wherein the clamping jaw comprises a clamping jaw head and an installation part, and a connection part connecting the clamping jaw head and the installation part, the clamping jaw head comprises two crimping parts, the protection plate comprises a pad, and the crimping parts press the tab onto the pad for the welding action of the laser welding device.
8. A welding process, wherein the welding device of any one of claims 6 or 7 is used, comprising the steps of:
s1: placing a protection plate in the limiting groove;
s2: rotating the insulating baffle to be in a state of abutting against the protection plate;
s3: checking the flatness of the part of the lug, which is exposed out of the battery core, and sequentially placing the battery core into the first positioning groove and the second positioning groove, wherein the welding surfaces of the lug are respectively opposite to the welding plate of the protection plate;
s4: the positioning jig rotates to the position below the laser welding device, the pressing claw presses downwards, and the laser welding device emits light to perform welding.
9. The welding process of claim 8, wherein in step S3, a hollow groove is formed at the bottom of the second positioning groove, and an inductor for inducing the positioning of the battery cell is disposed in the hollow groove.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810639070.XA CN108581247B (en) | 2018-06-20 | 2018-06-20 | Battery welding fixture, welding equipment and welding process |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810639070.XA CN108581247B (en) | 2018-06-20 | 2018-06-20 | Battery welding fixture, welding equipment and welding process |
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| Publication Number | Publication Date |
|---|---|
| CN108581247A CN108581247A (en) | 2018-09-28 |
| CN108581247B true CN108581247B (en) | 2020-07-07 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201810639070.XA Active CN108581247B (en) | 2018-06-20 | 2018-06-20 | Battery welding fixture, welding equipment and welding process |
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| CN (1) | CN108581247B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR3130175A1 (en) * | 2021-12-14 | 2023-06-16 | Jung S.A.S | Device for welding elements of a power supply battery of a portable electronic device and use of such a welding device for implementing a welding method |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110103164B (en) * | 2019-05-31 | 2024-02-23 | 广东利元亨智能装备股份有限公司 | Positioning device |
| CN116532874B (en) * | 2023-05-17 | 2024-02-06 | 海目星（江门）激光智能装备有限公司 | Circulating line cell welding tool |
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| CN201151024Y (en) * | 2007-12-25 | 2008-11-19 | 惠州市德赛电池有限公司 | Spot welding device for packaging batteries |
| CN202633425U (en) * | 2012-05-18 | 2012-12-26 | 万向电动汽车有限公司 | Compression structure for tab connection |
| CN203526846U (en) * | 2013-09-22 | 2014-04-09 | 深圳市倍特力电池有限公司 | Battery cell welding jig |
| CN204053252U (en) * | 2014-07-04 | 2014-12-31 | 东莞纳普能源科技有限公司 | A kind of lithium ion battery assembling fixture for laser welding |
| CN104439727B (en) * | 2014-11-20 | 2016-08-17 | 刘厚德 | Fixture for battery laser welding |
| CN204747844U (en) * | 2015-01-30 | 2015-11-11 | 深圳市电科电源股份有限公司 | Weld protection shield in instrument of electric core |
| CN204893282U (en) * | 2015-07-28 | 2015-12-23 | 惠州市德瑞达科技股份有限公司 | Laser welding anchor clamps of electricity core and protection shield |
| CN204913158U (en) * | 2015-09-01 | 2015-12-30 | 深圳市时瑞电池有限公司 | Electricity core and protection shield spot welding universal fixturing |
| CN205520260U (en) * | 2016-04-21 | 2016-08-31 | 东莞市时瑞电池有限公司 | Spot welding electricity core positioning fixture |
| 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 |
| CN206153782U (en) * | 2016-10-28 | 2017-05-10 | 深圳市锐博精创科技有限公司 | Battery welding equipment |
| CN206351309U (en) * | 2017-01-05 | 2017-07-25 | 珠海市梅木自动化科技有限公司 | A kind of new polymers welding equipment |
| CN206561194U (en) * | 2017-03-09 | 2017-10-17 | 吉安市优特利科技有限公司 | Polymer battery core spot welding tool |
| CN207272565U (en) * | 2017-09-28 | 2018-04-27 | 广东国光电子有限公司 | A kind of welding fixture |
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- 2018-06-20 CN CN201810639070.XA patent/CN108581247B/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR3130175A1 (en) * | 2021-12-14 | 2023-06-16 | Jung S.A.S | Device for welding elements of a power supply battery of a portable electronic device and use of such a welding device for implementing a welding method |
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| CN108581247A (en) | 2018-09-28 |
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