CN113828944B - Laser welding jig and welding method thereof - Google Patents
Laser welding jig and welding method thereof Download PDFInfo
- Publication number
- CN113828944B CN113828944B CN202111168187.2A CN202111168187A CN113828944B CN 113828944 B CN113828944 B CN 113828944B CN 202111168187 A CN202111168187 A CN 202111168187A CN 113828944 B CN113828944 B CN 113828944B
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- assembly
- battery cell
- pressing
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- driving
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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
-
- 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
Abstract
The utility model relates to the technical field of welding equipment, in particular to a laser welding jig and a welding method thereof. Through being formed with the accommodation cavity of placing the electric core in the bearing assembly inside, the top cap is placed behind the accommodation cavity bottom in with electric core material loading to the accommodation cavity for the electric core is adorned on the top cap, is provided with the clamping component in the both sides of bearing assembly, presss from both sides the side of clamping in the electric core in the accommodation cavity through the clamping component, compresses tightly the subassembly setting on the clamping component, compresses tightly the face of subassembly and acts on the electric core for the another side of top cap, acts on the clamping component through opening and shutting actuating assembly, makes clamping component and compressing tightly the subassembly compress tightly or loosen electric core and top cap simultaneously, acts on the electric core through pressure, and the welding mode realization of electric core and top cap is avoided compressing tightly the top cap, thereby avoids taking place the invagination at the welding in-process top cap, realizes improving battery assembly quality, eliminates the potential safety hazard, improves the yield, satisfies high-quality production demand.
Description
Technical Field
The utility model relates to the technical field of welding equipment, in particular to a laser welding jig and a welding method thereof.
Background
The lithium battery is widely applied to the electric automobile with the advantages of high energy density, long service life, good safety performance, less pollution and the like, and the battery assembly process comprises a process of welding a top cover and an electric core. The existing welding equipment locates the top cover and the battery cell, and enables the top cover to be attached to the battery cell through clamping action on the top cover during locating, so that welding can be conducted at the joint position of the top cover and the battery cell. However, the welding mode can lead to the top cap to take place the invagination easily when the welding, and the top cap warp and leads to having the quality problem after the battery assembly easily, causes serious quality accident easily, has the potential safety hazard, and finished product bad disability rate is high simultaneously, increases manufacturing cost, is difficult to satisfy current lithium cell high quality's production demand.
Disclosure of Invention
In order to solve the technical problems, the utility model provides a laser welding jig which comprises a bearing component, wherein the bearing component is provided with a containing cavity for placing a battery cell, and a top cover on the battery cell is contacted with a bearing surface of the bearing component; the clamping component is clamped on the side surface of the battery cell in the accommodating cavity and is clamped on the battery cell; the pressing component is used for pressing or loosening the side surface of the battery cell, and the pressing surface of the pressing component acts on the other surface of the battery cell opposite to the top cover, and the opening and closing driving component is used for driving the clamping component to clamp or loosen the side surface of the battery cell and enables the pressing component to press or loosen the battery cell. The electric core is acted on by pressure through the pressing mode, the electric core and the top cover are prevented from being pressed by the inverted welding mode, so that the top cover is prevented from sinking in the welding process, the battery assembly quality is improved, the potential safety hazard is eliminated, the yield is improved, and the high-quality production requirement is met.
Preferably, the clamping assembly comprises a clamping plate extending to the inner side opposite to the accommodating cavity and a locking block pivoted on the clamping plate; an abutting part matched with the bearing component is formed at one end of the locking block relative to the pivot point, and the opening and closing driving component acts on the other end of the locking block relative to the abutting part; and then the locking block is acted on through the jacking of the opening and closing driving assembly, so that the locking block rotates and is matched with the welding base, and the driving clamping plate is clamped on the battery cell.
The pressing assembly comprises a pressing block pivoted to the clamping plate, and the pressing block is connected to the bearing assembly through a first elastic piece; the opening and closing driving assembly drives the clamping plate to loosen the battery cell, and enables the pressing block to tilt around the pivot point. After welding is finished, the locking block enables the clamping plate to loosen the battery cell through pressing down the driving assembly, and then the pressing block is tilted around the pivot point when the clamping plate is opened through the first elastic piece and the rotating shaft, so that friction is not generated between the pressing block and the battery cell during feeding and discharging.
Preferably, the clamping plate is connected to the bearing assembly by a second elastic member. Through the second elastic component, the overvoltage damage to the battery cell when the clamping plate clamps the battery cell is avoided, and meanwhile noise generated during clamping can be reduced.
Preferably, the opening and closing driving assembly comprises a jacking driving assembly for jacking and pressing the locking block and a pressing driving assembly for opening the locking block, and the jacking driving assembly and the pressing driving assembly are sequentially arranged along the moving path of the bearing assembly. The clamping plate and the pressing block are clamped on the battery cell through the jacking driving assembly acting on the locking block, the battery cell and the top cover are welded through the laser equipment, the bearing assembly is conveyed to the pressing driving assembly after welding is completed, the battery cell is loosened through the pressing driving assembly, and the battery cell is taken out from the welding base.
Preferably, the jacking driving assembly comprises a first roller and a first driving piece for driving the first roller to jack and act on the locking block. The pressing driving assembly comprises a second roller and a second driving piece for driving the second roller to press down on the locking block. The horizontal height of the first roller is lower than that of the locking block, so that the locking block is lifted up to realize the clamping action of the clamping plate. The second roller is higher than the locking block in horizontal height, so that the clamping plate can be pressed down on the locking block to release the battery cell.
Preferably, the bearing assembly comprises a welding base formed with the accommodating cavity, a clearance gap for placing the top cover is formed in the bottom of the accommodating cavity in the welding base, and the top cover is stably placed in the welding base through the clearance gap and the positioning hole, so that the purpose of quickly installing the top cover is achieved. And the bottom of the welding base is provided with a clearance groove along two sides of the length direction of the welding base. And then laser welding equipment welds the both sides of electric core and top cap simultaneously through keeping away the empty slot, simultaneously, when electric core material loading to holding cavity in, can avoid the clamping jaw through keeping away the empty slot, make things convenient for the material loading of electric core.
Preferably, the clamping assembly comprises a clamping plate extending to the inner side opposite to the accommodating cavity and a locking block pivoted on the clamping plate, and an abutting part matched with the bearing assembly is formed at one end of the locking block opposite to the pivoting point; the pressing assembly comprises a pressing block fixedly arranged on the clamping plate. The pressing block is fixed on the clamping plate, and then the pressing block translates along with the clamping plate to clamp or loosen the battery cell.
Preferably, the opening and closing driving assembly comprises a driving rod pivoted to the locking block and a third driving piece for driving the driving rod to press or release the locking block. The clamping plates can be driven to press or loosen the battery cells through the arrangement of a group of driving assemblies.
The welding method based on the laser welding jig comprises the following steps of:
s100, feeding the top cover and the battery cell into a containing cavity of the bearing assembly, and moving the bearing assembly to the opening and closing driving assembly;
s200, the opening and closing driving assembly is lifted up, so that the clamping assembly clamps the side face of the battery cell in the accommodating cavity, and the compression face of the compression assembly acts on the other face of the battery cell relative to the top cover;
s300, welding the joint position of the top cover and the battery cell through laser;
s400, the opening and closing driving assembly pushes down to enable the clamping assembly to loosen the battery cell, and the pressing surface of the pressing assembly is enabled to be separated from the battery cell.
Preferably, the laser comprises a first laser and a second laser, and the first laser and the second laser weld the joint positions of the top cover and the two opposite sides of the battery cell at the same time. And the top cover and the two sides of the battery cell are welded simultaneously by the first laser and the second laser, so that the welding efficiency is improved.
Preferably, a blocking block for preventing the first laser and the second laser from being opposite is arranged on the bearing surface of the bearing assembly and positioned on the inner side opposite to the bearing assembly. By arranging the blocking blocks, laser correlation on two sides during corner interpolation welding is avoided, and therefore laser equipment is damaged.
Compared with the prior art, the utility model has the beneficial effects that: according to the utility model, the accommodating cavity for accommodating the battery cell is formed in the bearing component, the top cover is arranged at the bottom of the accommodating cavity, then the battery cell is fed into the accommodating cavity, so that the battery cell is arranged on the top cover, clamping components are arranged at two sides of the bearing component, the clamping components are clamped on the side face of the battery cell in the accommodating cavity, the pressing components are arranged on the clamping components, the pressing face of the pressing components acts on the other face of the battery cell opposite to the top cover, so that the battery cell and the top cover are assembled in a pressing mode so as to facilitate subsequent welding, the opening and closing driving component drives the clamping components to clamp the side face of the battery cell in the accommodating cavity, meanwhile, the pressing components on the clamping components press the battery cell, the pressing mode realizes that the pressure acts on the battery cell, and the inverted welding mode of the battery cell and the top cover avoids pressing the top cover, so that the top cover is prevented from sinking in the welding process, the battery assembling quality is improved, the potential safety hazard is eliminated, the yield is improved, and the production requirement of high quality is met.
Drawings
In order to more clearly illustrate the embodiments of the present utility model or the technical solutions in the prior art, the drawings used in the description of the embodiments of the present utility model or the prior art will be briefly described below. It is obvious that the drawings in the following description are only some embodiments of the present utility model and that other drawings may be obtained from them without inventive faculty for a person skilled in the art.
Fig. 1 is a schematic diagram of a laser welding jig according to embodiment 1 of the present utility model;
fig. 2 is an overall perspective view of the laser welding jig according to embodiment 1 of the present utility model;
fig. 3 is a perspective view of a welding base of the laser welding jig according to embodiment 1 of the present utility model;
fig. 4 is a front view of a welding base of the laser welding jig of embodiment 1 of the present utility model;
FIG. 5 is a side view of a welding base of the laser welding jig according to embodiment 1 of the present utility model;
fig. 6 is a front view of a laser welding jig according to embodiment 2 of the present utility model.
Reference numerals
10. A carrier assembly; 11. a receiving cavity; 12. welding a base; 13. copper blocks; 14. a second elastic member; 15. a clearance gap; 16. an empty-avoiding groove; 17. positioning pin holes; 18. a positioning pin; 19. positioning holes; 20. a clamping assembly; 21. a clamping plate; 211. a step; 22. a locking block; 221. an abutting portion; 23. a first rotating shaft; 222. a fixing member; 30. a compression assembly; 31. briquetting; 32. a first elastic member; 33. a second rotating shaft; 40. an opening and closing driving assembly; 41. a jacking driving assembly; 411. a first roller; 412. a first driving member; 42. pressing down the driving assembly; 421. a second roller; 422. a second driving member; 50. a transport assembly; 43. a driving rod; 44 a third drive member; 51. a conveyor line body; 52. and a driving module.
Detailed Description
Various embodiments of the utility model are disclosed in the following drawings, in which details of the practice are set forth in the following description for the purpose of clarity. However, it should be understood that these practical details are not to be taken as limiting the utility model. That is, in some embodiments of the utility model, these practical details are unnecessary. Moreover, for the purpose of simplifying the drawings, some conventional structures and components are shown in the drawings in a simplified schematic manner.
It should be noted that all directional indications such as up, down, left, right, front, and rear … … in the embodiments of the present utility model are merely used to explain the relative positional relationship, movement, etc. between the components in a particular posture such as that shown in the drawings, and if the particular posture is changed, the directional indication is changed accordingly.
In addition, the descriptions of the "first," "second," and the like, herein are for descriptive purposes only and are not intended to be specifically construed as order or sequence, nor are they intended to limit the utility model solely for distinguishing between components or operations described in the same technical term, but are not to be construed as indicating or implying any relative importance or order of such features. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include at least one such feature. In addition, the technical solutions of the embodiments may be combined with each other, but it is necessary to base that the technical solutions can be realized by those skilled in the art, and when the technical solutions are contradictory or cannot be realized, the combination of the technical solutions should be considered to be absent and not within the scope of protection claimed in the present utility model.
For a further understanding of the utility model, its features and advantages, reference is now made to the following examples, which are illustrated in the accompanying drawings in which:
example 1
In order to solve the above technical problems, this embodiment provides a laser welding jig, as shown in fig. 1-2, including bearing component 10, the top cap that is connecting the electric core is placed on bearing component 10, top cap and bearing surface contact of bearing component 10, be formed with the holding cavity 11 of placing the electric core in bearing component 10 inside, the top cap is placed in holding cavity 11 bottom back in with electric core material loading to holding cavity 11, make the electric core adorn on the top cap, both sides at bearing component 10 are provided with clamping component 20, clamp in the side of electric core in holding cavity 11 through clamping component 20, pressing component 30 sets up on clamping component 20, pressing surface of pressing component 30 acts on the another side of electric core for the top cap, make electric core and top cap pressfitting assemble so that follow-up welding, pin joint latch 31 is located the both sides side of bearing component 10 and be provided with open and shut drive assembly 40, open and shut drive assembly 40 is in holding cavity 11 internal clamp in the side of electric core, simultaneously, pressing component 20 on the clamping component 20 is pressed from both sides, realize the realization of electric core and hold down in the side of electric core, realize the realization of high quality of the top cap, the realization of the improvement of the quality of the demand of the electric core, the realization of the improvement of the quality of the welding, the top cap is realized, the realization of the improvement of the quality of the top cap is well-pressed, and the realization of the quality of the demand of the top cap is avoided.
It should be noted that, the battery cell according to the present utility model includes a battery cell and a housing, that is, the battery cell is mounted in the housing, the top cover connected with the battery cell and the housing are placed on the welding base 12 together, and then the housing and the top cover are welded together. Specifically, in order to realize the inverted welding mode of electric core and top cap, as shown in fig. 3-4, the bearing assembly 10 includes a welding base 12 formed with a holding cavity 11, a bearing surface for placing the top cap is formed on the bottom surface of the welding base 12, a clearance gap 15 and a positioning hole 19 for placing the top cap are formed in the bearing surface, the top cap is stably placed in the welding base 12 through the clearance gap 15 and the positioning hole 19, the purpose of rapidly installing the top cap is achieved, then the electric core is loaded on the top cap, clearance grooves 16 are formed in two sides of the bottom of the welding base 12 along the length direction, and then the laser welding equipment simultaneously welds two sides of the electric core and the top cap through the clearance grooves 16, and simultaneously, when the electric core is loaded into the holding cavity 11, the clamping jaw can be avoided through the clearance grooves 16, so that the loading of the electric core is facilitated.
Further, when the welding corner is interpolated, the laser welding devices located at the two sides can be correlation-shot to cause damage, and for this reason, the blocking block 13 is installed on the opposite inner side of the bearing surface of the welding base 12, and the blocking block 13 can be a copper block, so that the laser devices are damaged by the correlation of the laser at the two sides when the welding corner is interpolated is avoided by setting the blocking block 13.
In order to realize the movement of the driving bearing assembly 10, the bearing assembly 10 is arranged on the conveying assembly 50, the conveying assembly 50 comprises a conveying line body 51 and a driving module 52 for driving the welding base 12 to move on the conveying line body 51, wherein the conveying line body 51 can be a spliced reflow line, and the purpose of reflow conveying the welding base 12 is realized. The bottom and the side of the welding base 12 are provided with positioning pin holes 17, the welding base 12 is provided with positioning pins 18, and the positioning pins 18 are of a crisscross structure, so that the welding base 12 and the conveying assembly 50 can be positioned and installed conveniently.
In order to stably clamp the battery cell in the bearing assembly 10, the clamping assembly 20 comprises a clamping plate 21 extending to the inner side opposite to the accommodating cavity 11 and a locking block 22 pivoted on the clamping plate 21 through a first rotating shaft 23, the middle part of the locking block 22 is pivoted on the clamping plate 21, one end of the locking block 22 opposite to the pivoting point is provided with an abutting part 221 matched with the bearing assembly 10, the abutting part 221 can abut against the side surface of the welding base 12, the opening and closing driving assembly 40 acts on the other end of the locking block 22 opposite to the abutting part 221, and then the opening and closing driving assembly 40 lifts the locking block 22 to enable the locking block 22 to rotate and be matched with the welding base 12, so that the locking block 22 drives the clamping plate 21 to clamp the battery cell, and a pressing block 31 on the clamping plate 21 presses the battery cell. Further, the locking block 22 is pressed down by the opening and closing driving assembly 40, so that the locking block 22 is cut off the welding base 12, and the clamping plate 21 releases the battery cell.
In order to realize the compaction effect on the battery cell for the another side of top cap, briquetting 31 is connected on welding base 12 through first elastic component 32, be provided with mounting 222 on welding base 12, the one end of first elastic component 32 is connected in the top of briquetting 31, the other end is connected with mounting 222, and then realize the elastic connection of briquetting 31 and welding base 12, move in opposite directions in holding cavity 11 inboard through driving splint 21, and then realize the side of centre gripping holding cavity 11 internal battery cell, simultaneously, push down the briquetting 31 through splint 21 and act on the battery cell top, and then reach the effect that battery cell and top cap closely laminate. The bottom of the clamping plate 21 is provided with a step 211, and the step is designed to avoid the laser welding head in the welding process.
Further, in order to prevent the clamping plate 21 from crushing the battery cell due to overlarge pressure, the clamping plates 21 located at two inner sides of the accommodating cavity 11 are connected to the welding base 12 through the second elastic piece 14, and the situation that the battery cell is damaged due to overvoltage when the clamping plates 21 clamp the battery cell is avoided through the second elastic piece 14, and meanwhile noise generated during clamping can be reduced.
Further, the opening and closing driving assembly 40 includes a jacking driving assembly 41 for jacking up the locking block 22, and a pressing driving assembly 42 for opening the locking block 22, and the jacking driving assembly 41 and the pressing driving assembly 42 are sequentially disposed along the moving path of the bearing assembly 10. After the top cover and the battery cell are fed to the bearing assembly 10, the conveying assembly 50 firstly conveys the bearing assembly 10 to the jacking driving assembly 41, the clamping plate 21 is clamped to the battery cell by acting on the locking block 22 through the jacking driving assembly 41, the pressing block 31 is tightly pressed on the battery cell, the battery cell and the top cover are welded through laser equipment, the bearing assembly 10 is conveyed to the pressing driving assembly 42 after the welding is finished, the clamping plate 21 and the pressing block 31 are loosened through the pressing driving assembly 42, and the battery cell is taken out from the welding base 12.
Specifically, the jacking driving assembly 41 includes a first roller 411, and a first driving member 412 for driving the first roller 411 to jack and act on the locking block 22. The pressing driving assembly 42 includes a second roller 421 and a second driving member 422 for driving the second roller 421 to press down on the locking block 22. The first driving piece 412 and the second driving piece 422 are both air cylinders, the horizontal height of the first roller 411 is lower than that of the locking piece 22, so that the locking piece 22 is lifted up to realize the clamping action of the clamping plate 21, and the horizontal height of the second roller 421 is higher than that of the locking piece 22, so that the clamping plate 21 is pressed down on the locking piece 22 to release the battery cell.
Since the pressing block 31 acts on the top of the cell, when the clamping plates 21 move toward each other to clamp the sides of the cell, the pressing block 31 moves to the top of the cell to compress the cell. However, when the space of the accommodating cavity 11 of the welding base 12 is not large enough relative to the battery core, after the battery core is released from the accommodating cavity 11, the end face of the pressing block 31 on the clamping plate 21 prevents the battery core from being taken out of the welding base 12, for this purpose, for the situation, the bottom of the pressing block 31 of the embodiment is pivoted to the clamping plate 21 through the second rotating shaft 33, and the pressing block 31 is connected to the fixing piece 222 on the welding base 12 through the first elastic member 32, after the welding is completed, the locking block 22 makes the clamping plate 21 release the battery core through pressing down the driving assembly 42, and then the pressing block 31 swings around the pivot point through the first elastic member 32 and the second rotating shaft 33, so that the pressing block 31 is opened at an angle, as shown in fig. 5, the clamping plate 21 and the pressing block 31 on the left side are in an opened state, and the clamping plate 21 and the pressing block 31 on the left side are in a pressed-down state, so that friction is not generated with the pressing block 31 when the battery core is fed and discharged in the welding base 12.
In order to achieve efficient welding, this embodiment also provides a welding method, based on the above laser welding jig, including the following steps:
s100, feeding the top cover and the battery cell into a containing cavity 11 of a bearing assembly 10, and moving the bearing assembly 10 to an opening and closing driving assembly 40;
after the top cover and the battery cell are loaded into the accommodating cavity 11 of the bearing assembly 10, the bearing assembly 10 is conveyed to the jacking driving assembly 41 of the opening and closing driving assembly 40 through the conveying assembly 50,
s200, the opening and closing driving assembly 40 is lifted up to enable the clamping assembly 20 to clamp the side face of the battery cell in the accommodating cavity 11, and enable the pressing face of the pressing assembly 30 to act on the other face of the battery cell relative to the top cover;
the first roller 411 of the jacking driving assembly 41 acts on the locking block 22, so that the clamping plate 21 is clamped on the battery cell, meanwhile, the pressing block 31 is clamped on the other surface of the battery cell opposite to the top cover, the battery cell and the top cover are tightly pressed, and the subsequent welding quality is ensured.
S300, welding the joint position of the top cover and the battery cell through laser;
in the step, the laser comprises first laser and second laser, the first laser and the second laser are respectively arranged on the two opposite sides of the top cover and the battery cell, and the joint positions of the two opposite sides of the top cover and the battery cell are welded through the first laser and the second laser at the same time, so that the welding efficiency is improved.
S400, the opening and closing driving assembly 40 pushes down to enable the clamping assembly 20 to loosen the battery cell, and enable the pressing surface of the pressing assembly 30 to leave the battery cell.
And then welds electric core and top cap through laser equipment, after the welding is accomplished with carrying the drive assembly 42 that pushes down of drive assembly 40 that opens and shuts to carry the subassembly 10, pushes down through the drive assembly 42 that pushes down and acts on locking piece 22 for locking piece 22 opens splint 21 and makes briquetting 31 perk, and then splint 21 and briquetting 31 loosen the electric core, so that follow-up take out the electric core from welding base 12.
Example 2
In order to solve the above technical problems, this embodiment provides a laser welding fixture, as shown in fig. 6, which also includes a bearing component 10, a containing cavity 11 for placing a battery cell is formed in the bearing component 10, a top cover is placed at the bottom of the containing cavity 11 and then the battery cell is loaded into the containing cavity 11, so that the battery cell is mounted on the top cover, the battery cell is clamped in the containing cavity 11 by a clamping component 20, a pressing component 30 is arranged on the clamping component 20, a pressing surface of the pressing component 30 acts on the other surface of the battery cell opposite to the top cover, so that the battery cell and the top cover are assembled in a pressing manner to be welded later, the clamping component 20 is driven to clamp the side surface of the battery cell by an opening and closing driving component 40, and meanwhile, the pressing component 30 on the clamping component 20 presses the battery cell, so as to achieve the purpose of fixing the battery cell and the top cover.
In contrast to embodiment 1, in which the clamping assembly 20 includes the clamping plate 21 extending to the opposite inner side of the accommodating cavity 11 and the locking block 22 pivotally connected to the clamping plate 21, the end face of the pressing block 31 on the clamping plate 22 forms an abutting portion 32221 for cooperating with the bearing assembly 10 with respect to one end of the pivot point when the end face of the pressing block 31 on the clamping plate 21 does not interfere with the removal of the battery cell from the welding base 12 after the accommodating cavity 11 is loosened by the clamping plate 21 when the accommodating cavity 11 is sufficiently large with respect to the battery cell, and the pressing block 31 does not need to be tilted to avoid the battery cell; the pressing assembly 30 comprises a pressing block 31 fixedly arranged on the clamping plate 21, wherein the pressing block 31 is fixed on the clamping plate 21 and further moves horizontally along with the clamping plate 21. The opening and closing driving assembly 40 includes a driving rod 43 pivoted to the locking block 22, and a third driving member 44 driving the driving rod 43 to press or release the locking block 22. The third driving piece 44 drives the driving rod 43 to move up and down, so that the driving rod 43 is driven to press or open the locking block 22, and further the driving clamping plate 21 and the pressing block 31 are driven to translate and press or loosen the battery cell. In contrast to embodiment 1, the carrier assembly 10 does not need to be moved, and for this purpose, no transport assembly is required, and the fixing or releasing of the cells by the drive clamp plate 21 and the press block 31 can be accomplished by providing a set of drive assemblies.
In summary, in one or more embodiments of the present utility model, a receiving cavity in which a battery core is placed is formed inside a bearing component, a top cover is placed at the bottom of the receiving cavity, then the battery core is fed into the receiving cavity, so that the battery core is mounted on a top cover, clamping components are disposed at two sides of the bearing component, the clamping components are clamped on the side surface of the battery core in the receiving cavity, the pressing components are disposed on the clamping components, a pressing surface of the pressing components acts on the other surface of the battery core relative to the top cover, so that the battery core and the top cover are pressed and assembled for subsequent welding, and an opening and closing driving component drives the clamping components to clamp the side surface of the battery core in the receiving cavity.
The above-described embodiments do not limit the scope of the present utility model. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the above embodiments should be included in the scope of the present utility model.
Claims (12)
1. A laser welding jig which is characterized in that: comprising a bearing assembly (10),
the bearing assembly (10) is arranged, a containing cavity (11) for placing a battery cell is formed in the bearing assembly, and a top cover on the battery cell is contacted with a bearing surface of the bearing assembly (10);
the clamping assembly (20) is clamped on the side surface of the battery cell in the accommodating cavity (11) and is clamped on the battery cell;
the pressing surface of the pressing component (30) acts on the other surface of the battery cell relative to the top cover;
the opening and closing driving assembly (40) is used for driving the clamping assembly (20) to clamp or loosen the side surface of the battery cell and enabling the pressing assembly (30) to press or loosen the battery cell;
the clamping assembly (20) comprises clamping plates (21) extending to the inner sides opposite to the accommodating cavity (11), and locking blocks (22) pivoted on the clamping plates (21); an abutting portion (221) matched with the bearing assembly (10) is formed at one end of the locking block (22) opposite to the pivot point, and the opening and closing driving assembly (40) acts on the other end of the locking block (22) opposite to the abutting portion (221).
2. The laser welding jig according to claim 1, wherein: the pressing assembly (30) comprises a pressing block (31) pivoted to the clamping plate (21), and the pressing block (31) is connected to the bearing assembly (10) through a first elastic piece (32); the opening and closing driving assembly (40) drives the clamping plate (21) to loosen the battery core, and enables the pressing block (31) to tilt around the pivot point.
3. The laser welding jig according to claim 1, wherein: the clamping plate (21) is connected to the bearing assembly (10) through a second elastic member (14).
4. The laser welding jig according to claim 1, wherein: the opening and closing driving assembly (40) comprises a jacking driving assembly (41) for jacking and pressing the locking block (22) and a pressing driving assembly (42) for opening the locking block (22), and the jacking driving assembly (41) and the pressing driving assembly (42) are sequentially arranged along the moving path of the bearing assembly (10).
5. The laser welding jig of claim 4, wherein: the jacking driving assembly (41) comprises a first roller (411) and a first driving piece (412) for driving the first roller (411) to jack and act on the locking block (22); the pressing driving assembly (42) comprises a second roller (421) and a second driving piece (422) for driving the second roller (421) to press down on the locking block (22).
6. The laser welding jig according to claim 2, wherein: the bearing assembly (10) comprises a welding base (12) formed with the accommodating cavity (11), a clearance gap (15) for accommodating a top cover is formed in the bottom of the accommodating cavity (11) in the welding base (12), and clearance grooves (16) are formed in the bottom of the welding base (12) along the two sides of the length direction of the bottom.
7. The laser welding jig of claim 6, wherein: the pressing block (31) is pivoted to the clamping plate (21) through a second rotating shaft (33), a fixing piece (222) is arranged on the welding base (12), one end of the first elastic piece (32) is connected to the top of the pressing block (31), and the other end of the first elastic piece is connected to the fixing piece (222).
8. The laser welding jig according to claim 1, wherein: the compression assembly (30) comprises a pressing block (31) fixedly arranged on the clamping plate (21).
9. The laser welding jig of claim 8, wherein: the opening and closing driving assembly (40) comprises a driving rod (43) pivoted to the locking block (22) and a third driving piece (44) for driving the driving rod (43) to press or release the locking block (22).
10. A method of welding, characterized by: the laser welding jig according to any one of claims 1-9, comprising the steps of:
s100, feeding the top cover and the battery cell into a containing cavity (11) of the bearing assembly (10), and moving the bearing assembly (10) to the opening and closing driving assembly (40);
s200, the opening and closing driving assembly (40) is lifted up, so that the clamping assembly (20) clamps the side face of the battery cell in the accommodating cavity (11), and the pressing face of the pressing assembly (30) acts on the other face of the battery cell opposite to the top cover;
s300, welding the joint position of the top cover and the battery cell through laser;
s400, the opening and closing driving assembly (40) is pressed down to enable the clamping assembly (20) to loosen the battery cell, and the pressing surface of the pressing assembly (30) is separated from the battery cell.
11. The welding method according to claim 10, wherein: the laser comprises a first laser and a second laser, and the first laser and the second laser weld the joint positions of the two opposite sides of the top cover and the battery cell at the same time.
12. The welding method according to claim 11, wherein: and a blocking block (13) for preventing the first laser and the second laser from being opposite is arranged on the bearing surface of the bearing assembly (10) and positioned on the inner side opposite to the bearing assembly (10).
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