CN219443975U - Welding jig for battery cell electrode lugs - Google Patents

Abstract

The utility model provides a welding jig for battery cell tabs, which comprises the following components: the base is provided with a battery cell placement position; the two battery cell positioning pieces are arranged at two sides of the battery cell placement position at intervals along the first direction, and at least one battery cell positioning piece is movably arranged relative to the base along the first direction; the electrode lug pressing claws are arranged at intervals along a first direction, and extend along a second direction perpendicular to the first direction; the press claw adjusting piece comprises an adjusting rod arranged on the base, the adjusting rod extends along a first direction, the lug press claw is rotatably arranged on the adjusting rod around the axis of the adjusting rod, and the lug press claw can move along the axis of the adjusting rod. Through the technical scheme that this application provided, can solve the less problem of electric core application scope of electric core tab welding jig among the correlation technique.

Description

Welding jig for battery cell electrode lugs

Technical Field

The utility model relates to the technical field of tab welding jigs, in particular to a battery cell tab welding jig.

Background

The welding tool is needed to be used for fixing the welding piece in the using process of the laser welding machine so as to assist the laser welding machine to weld.

In the related art, the reference CN211759470U provides a positioning fixture for welding the battery tab, the two first clamping blocks are pushed to move away from each other by the open-clamp control mechanism to be in an open-clamp state, the battery core is placed in the supporting plate, and the two first clamping blocks move close to each other under the elastic pushing action of the corresponding first springs, so that the two first clamping blocks can clamp and position the battery cores with different sizes.

However, the battery cell tab welding jig in the related art cannot adapt to the battery cells with different tab pitches, so that the battery cell application range of the battery cell tab welding jig in the related art is smaller.

Disclosure of Invention

The utility model provides a battery cell tab welding jig, which is used for solving the problem of smaller battery cell application range of the battery cell tab welding jig in the related technology.

The utility model provides a welding jig for battery cell tabs, which comprises: the base is provided with a battery cell placement position; the two battery cell positioning pieces are arranged at two sides of the battery cell placement position at intervals along the first direction, and at least one battery cell positioning piece is movably arranged relative to the base along the first direction; the electrode lug pressing claws are arranged at intervals along a first direction, and extend along a second direction perpendicular to the first direction; the press claw adjusting piece comprises an adjusting rod arranged on the base, the adjusting rod extends along a first direction, the lug press claw is rotatably arranged on the adjusting rod around the axis of the adjusting rod, and the lug press claw can move along the axis of the adjusting rod.

Further, the pressing claw adjusting piece further comprises an adjusting ring movably sleeved on the adjusting rod, and the two sides of each lug pressing claw are respectively attached to the adjusting ring.

Further, the pressing claw adjusting piece further comprises a limiting screw, and the limiting screw penetrates through the adjusting ring along the radial direction of the adjusting ring and can be abutted with the adjusting rod.

Further, the cell locating piece comprises a locating plate and a guide rod, the locating plate extends along the second direction, the locating plate is provided with a locating surface corresponding to the cell, the guide rod extends along the first direction and is connected with one side, far away from the locating surface, of the locating plate, and the guide rod is in sliding connection with the base.

Further, the battery cell tab welding jig further comprises a guide screw arranged on the base, the guide rod is provided with a strip-shaped hole extending along the first direction, and the guide screw is movably penetrated in the strip-shaped hole along the extending direction of the strip-shaped hole; and/or the cell positioning piece comprises two guide rods, wherein the two guide rods are respectively connected with two ends of the positioning plate and are positioned at one side of the guide rods, which is far away from the positioning surface.

Further, the welding jig for the battery cell electrode lugs further comprises a buffer piece, and the buffer piece is arranged on the positioning surface.

Further, the buffer member includes: a buffer plate; the buffer pin is movably penetrated through the positioning plate along the first direction and is fixedly connected with the buffer plate; and the buffer spring is sleeved on the buffer pin, one end of the buffer spring is abutted against the buffer plate, and the other end of the buffer spring is abutted against the positioning surface.

Further, a guide groove extending along the first direction is formed in the base, and the lower end of the buffer plate is movably arranged in the guide groove along the first direction.

Further, the battery cell tab welding jig further comprises a jacking plate which is arranged in parallel with the base, and the jacking plate is detachably arranged on the battery cell placing position.

Further, the battery cell tab welding jig further comprises at least two magnetic pieces which are in one-to-one correspondence with the at least two tab pressing claws, the at least two magnetic pieces are arranged on the base at intervals along the first direction, the magnetic pieces are of long strip-shaped structures extending along the first direction, and the tab pressing claws are made of ferromagnetic materials; the battery cell tab welding jig further comprises at least two bearing pieces which are in one-to-one correspondence with the at least two tab pressing claws, the at least two bearing pieces are arranged on the base at intervals along the first direction, the bearing pieces are of long-strip-shaped structures extending along the first direction, and the bearing pieces are provided with tab placing positions.

By applying the technical scheme, the battery cell tab welding jig comprises a base, two battery cell positioning pieces, at least two tab pressing claws and a pressing claw adjusting piece, wherein the battery cell is prevented from being placed on a battery cell placement position, the battery cell adjusting piece is moved relative to the base along the first direction according to the dimension of the battery cell in the first direction, the distance between the two battery cell positioning pieces is changed, the two battery cell positioning pieces can clamp the battery cell on a battery cell placement position in the first direction, a corresponding number of tab pressing claws are selected according to the number of the battery cells, the tab pressing claws are moved relative to the adjustment rod along the axial direction of the adjustment rod according to the tab positions of the battery cell, the distance between adjacent tab pressing claws is changed, each tab of the battery cell is correspondingly provided with one tab pressing claw in the second direction, the tab pressing claws are rotated relative to the adjustment rod around the axis of the adjustment rod, the tab pressing claws are pressed on the base, and the welding positioning of the battery cell is completed. Therefore, through moving the battery cell locating piece and the lug pressing claw, the battery cell lug welding jig can be suitable for battery cells with different lug distances and different sizes, and the application range of the battery cell lug welding jig is enlarged.

Drawings

The accompanying drawings, which are included to provide a further understanding of the utility model and are incorporated in and constitute a part of this specification, illustrate embodiments of the utility model and together with the description serve to explain the utility model. In the drawings:

fig. 1 shows a schematic structural diagram of a welding fixture for a battery cell tab according to an embodiment of the present utility model;

fig. 2 shows an exploded view of the welding jig for the battery cell tab according to the embodiment of the utility model.

Wherein the above figures include the following reference numerals:

10. a base; 11. the battery cell placement position; 12. a guide groove; 13. an adjusting lever mounting groove; 14. a magnetic member mounting groove; 15. a socket mounting groove;

20. a cell positioning piece; 21. a positioning plate; 211. a positioning surface; 22. a guide rod; 221. a bar-shaped hole;

30. a lug pressing claw;

40. a press jaw adjusting member; 41. an adjusting rod; 42. an adjusting ring;

50. a buffer member; 51. a buffer plate; 52. a buffer pin; 53. a buffer spring;

61. a jacking plate; 62. a magnetic member; 63. a receiving member; 64. and adjusting the rod pressing plate.

Detailed Description

The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. The following description of at least one exemplary embodiment is merely exemplary in nature and is in no way intended to limit the utility model, its application, or uses. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

As shown in fig. 1 and 2, an embodiment of the present utility model provides a battery tab welding fixture, which includes a base 10, two battery positioning members 20, at least two tab pressing claws 30, and a pressing claw adjusting member 40, wherein the base 10 has a battery placement position 11, the two battery positioning members 20 are disposed at two sides of the battery placement position 11 at intervals along a first direction, at least one battery positioning member 20 is movably disposed with respect to the base 10 along the first direction, at least two tab pressing claws 30 are disposed at intervals along the first direction, the tab pressing claws 30 extend along a second direction perpendicular to the first direction, the pressing claw adjusting member 40 includes an adjusting lever 41 disposed on the base 10, the adjusting lever 41 extends along the first direction, the tab pressing claws 30 are rotatably disposed on the adjusting lever 41 around an axis of the adjusting lever 41, and the tab pressing claws 30 are capable of moving along the axis of the adjusting lever 41.

The battery cell tab welding jig provided by the embodiment is applied, the battery cell tab welding jig comprises a base 10, two battery cell positioning pieces 20, at least two battery cell pressing claws 30 and a pressing claw adjusting piece 40, a battery cell is prevented from being placed on a battery cell placement position 11, the battery cell adjusting piece is moved relative to the base 10 along a first direction according to the size of the battery cell in the first direction, the distance between the two battery cell positioning pieces 20 is changed, the battery cells on the battery cell placement position 11 can be clamped by the two battery cell positioning pieces 20 along the first direction, a corresponding number of battery cell pressing claws 30 are selected according to the number of battery cells, the battery cell pressing claws 30 are moved relative to the adjusting rod 41 along the axial direction of the adjusting rod 41 according to the position of the battery cell, the distance between the adjacent battery cell pressing claws 30 is changed, each battery cell tab is corresponding to one battery cell pressing claw 30 in the second direction, the battery cell pressing claw 30 is rotated relative to the adjusting rod 41 around the axis of the adjusting rod 41, the battery cell pressing claws 30 are pressed on the corresponding base 10, and the battery cell is positioned and welded. Therefore, by moving the battery cell positioning piece 20 and the tab pressing claw 30, the battery cell tab welding jig can be suitable for battery cells with different tab pitches and different sizes, and the application range of the battery cell tab welding jig is enlarged.

In this embodiment, the base 10 and the cell positioning member 20 are made of insulating materials, and specifically, the base 10 and the cell positioning member 20 are made of bakelite.

In the present embodiment, the first direction is the width direction of the chassis 10, and the second direction is the length direction of the chassis 10.

In this embodiment, the cell placement position 11 refers to a groove-like structure provided on the upper surface of the base 10.

As shown in fig. 1, the pressing claw adjusting member 40 further includes an adjusting ring 42 movably sleeved on the adjusting rod 41, and two sides of each tab pressing claw 30 are attached to the adjusting ring 42. The adjusting ring 42 is provided with an adjusting state movably sleeved on the adjusting rod 41 and a welding state fixedly connected with the adjusting rod 41, the adjusting ring 42 is adjusted to the adjusting state, after the position of the lug pressing claw 30 on the adjusting rod 41 is adjusted according to the lug position of the battery cell, the adjusting ring 42 is adjusted to the adjusting rod 41, the two sides of each lug pressing claw 30 are attached to the adjusting ring 42, the adjusting ring 42 is adjusted to the welding state, at the moment, the adjusting ring 42 is immovable relative to the adjusting rod 41, so that the lug pressing claw 30 is limited by the adjusting ring 42 on the two sides of the lug pressing claw 30 in the axial direction of the adjusting rod 41, the lug pressing claw 30 is prevented from moving relative to the adjusting rod 41 in the axial direction of the adjusting rod 41 in the welding process, the pressing and fixing effect of the lug pressing claw 30 on the lug is improved, and the fixing effect of the battery cell lug welding jig on the battery cell is improved.

As shown in fig. 2, the base 10 is provided with an adjusting rod mounting groove 13 extending along a first direction, the battery cell tab welding jig further comprises an adjusting rod pressing plate 64, the adjusting rod 41 is arranged in the adjusting rod mounting groove 13, the adjusting rod pressing plate 64 covers two ends of the adjusting rod mounting groove 13 and is connected with the adjusting rod 41 and the base 10 through screws, and the adjusting rod 41 is fixedly connected with the base 10 through the adjusting rod pressing plate 64.

In this embodiment, the pressing jaw adjuster 40 further includes a limit screw that penetrates the adjusting ring 42 in a radial direction of the adjusting ring 42 and can abut against the adjusting rod 41. When the limit screw is separated from the outer side wall of the adjusting rod 41, the adjusting ring 42 can move relative to the adjusting rod 41 along the axial direction of the adjusting rod 41, the adjusting ring 42 is in an adjusting state, the positions of the lug pressing claws 30 and the adjusting ring 42 on the adjusting rod 41 are adjusted according to the lug positions of the battery cells, the two sides of each lug pressing claw 30 are attached with the adjusting ring 42, the limit screw is abutted with the outer side wall of the adjusting rod 41, the adjusting ring 42 can be immovable relative to the adjusting rod 41 along the axial direction of the adjusting rod 41, the adjusting ring 42 is in a welding state, the lug pressing claws 30 are fixed relative to the adjusting rod 41 in the axial direction of the adjusting rod 41 in the welding process, the pressing and fixing effects of the lug pressing claws 30 on the lug are improved, and the fixing effect of the battery cell lug welding jig on the battery cells is improved.

As shown in fig. 1, the cell positioning member 20 includes a positioning plate 21 and a guide rod 22, the positioning plate 21 extends along the second direction, the positioning plate 21 has a positioning surface 211 corresponding to the cell, the guide rod 22 extends along the first direction and is connected to a side of the positioning plate 21 away from the positioning surface 211, and the guide rod 22 is slidably connected to the base 10. On the premise that the size of the positioning surface 211 on the positioning plate 21 is unchanged, the guide rod 22 is in sliding connection with the base 10, so that the overall size of the cell positioning piece 20 can be reduced, and the processing consumable amount of the cell positioning piece 20 can be reduced.

As shown in fig. 1, the welding fixture for the battery cell tab further includes a guide screw disposed on the base 10, the guide rod 22 is provided with a bar hole 221 extending along the first direction, and the guide screw is movably inserted into the bar hole 221 along the extending direction of the bar hole 221. By utilizing the movement of the guide screw in the strip-shaped hole 221 along the extending direction of the strip-shaped hole 221, the guide screw is guided by the strip-shaped hole 221, so that the guide rod 22 is guided by the strip-shaped hole 221, and the guide rod 22 drives the positioning plate 21 to move relative to the base 10 along the first direction, thereby guiding the cell positioning piece 20.

As shown in fig. 1, the cell positioning member 20 includes two guide rods 22, and the two guide rods 22 are respectively connected with two ends of the positioning plate 21 and are located at one side of the guide rods 22 away from the positioning surface 211. Adopt foretell two guide bars 22, when locating plate 21 removes for locating plate 21 receives the effort of two guide bars 22 in the second direction, avoids locating plate 21 to take place to rock, makes locating plate 21 be parallel with the second direction all the time in the removal process, improves the stability of locating plate 21's removal, makes electric core setting element 20 apply the clamping force along first direction to the electric core, improves the clamping effect of electric core tab welding jig.

As shown in fig. 1, the welding fixture for the battery cell tab further includes a buffer member 50, where the buffer member 50 is disposed on the positioning surface 211. Because the positioning surface 211 is provided with the buffer piece 50, the cell positioning pieces 20 are contacted with the cells through the buffer piece 50, and the buffer effect of the buffer piece 50 is utilized to avoid the damage of the cell positioning pieces 20 to the cells in the process of clamping the cells by the two cell positioning pieces 20.

As shown in fig. 2, the buffer member 50 includes a buffer plate 51, a buffer pin 52 and a buffer spring 53, the buffer pin 52 is movably disposed through the positioning plate 21 along a first direction, the buffer pin 52 is fixedly connected with the buffer plate 51, the buffer spring 53 is sleeved on the buffer pin 52, one end of the buffer spring 53 abuts against the buffer plate 51, and the other end of the buffer spring 53 abuts against the positioning surface 211. When the buffer plate 51 contacts with the battery cells, and the two battery cell positioning pieces 20 are close to each other, as the two ends of the buffer spring 53 are respectively abutted against the buffer plate 51 and the positioning surface 211, the buffer spring 53 is subjected to compression deformation, the battery cells are prevented from being damaged by clamping by utilizing the deformation of the buffer spring 53, and when the battery cells with the same size are welded in batches, the two battery cell positioning pieces 20 are adjusted to a proper position and fixed according to the shape of the first battery cell, the buffer plate 51 is pulled to compress the buffer spring 53, the welded battery cells are taken out and the battery cells to be welded are placed between the two battery cell positioning pieces 20, the buffer plate 51 is loosened, the buffer plate 51 moves to a position attached to the battery cells to be welded under the compression deformation force of the buffer spring 53, and the convenience of taking the battery cells during batch welding is improved.

In the present embodiment, the buffer pin 52 is made of a metal material, the buffer plate 51 is made of an insulating material, and specifically, the buffer plate 51 is made of bakelite.

As shown in fig. 2, the base 10 is provided with a guide groove 12 extending in a first direction, and a lower end of the buffer plate 51 is movably disposed in the guide groove 12 in the first direction. Utilize guide slot 12 to the guide effect of buffer board 51 for buffer board 51 removes along first direction in the buffering process, makes buffer spring 53 take place elastic deformation in first direction, and buffer spring 53 plays the cushioning effect along first direction, guarantees the tight effect of clamp of electric core tab welding jig.

As shown in fig. 1, the welding fixture for the battery cell tab further includes a lifting plate 61 disposed parallel to the base 10, where the lifting plate 61 is detachably disposed on the battery cell placement position 11. Because the tab of the battery cell is located on one side close to the front side of the battery cell in the thickness direction of the battery cell, namely, the distance between the tab and the front side of the battery cell is smaller than the distance between the tab and the back side of the battery cell, when the front side of the battery cell is welded (the back side of the battery cell faces the base 10), the jacking plate 61 is detached from the battery cell placement position 11, so that the back side of the battery cell is contacted with the base 10, when the back side of the battery cell is welded (the front side of the battery cell faces the base 10), the front side of the battery cell is contacted with the jacking plate 61, so that the distance between the tab of the battery cell welded on the front side and the upper surface of the base 10 is the same as the distance between the tab of the battery cell welded on the back side and the upper surface of the base 10, and the battery cell tab welded on the front side can be matched with the battery cell welded on the back side, and the application range of the battery cell tab welding jig is enlarged.

In the present embodiment, the jacking plate 61 is detachably connected to the base 10 by screw connection, and the jacking plate 61 is made of an insulating material, specifically, the jacking plate 61 is made of bakelite.

As shown in fig. 1, the battery tab welding fixture further includes at least two magnetic members 62 corresponding to the at least two tab pressing claws 30 one to one, the at least two magnetic members 62 are disposed on the base 10 at intervals along the first direction, the magnetic members 62 are of a strip-shaped structure extending along the first direction, and the tab pressing claws 30 are made of ferromagnetic materials. When the tab pressing claw 30 presses the tab on the base 10, the magnetic piece 62 applies downward magnetic attraction force to the tab pressing claw 30, so that the pressing force of the tab pressing claw 30 on the tab is increased, the tab is prevented from moving in the welding process, and the fixing effect of the battery core tab welding jig on the battery core is improved.

In this embodiment, the tab presser 30 is made of iron chrome plating.

Specifically, the magnetic member 62 may be an integrally formed elongated structure, and the magnetic member 62 may also be a multi-segment spliced elongated structure. The magnetic member 62 having a long strip-shaped structure can be applied to the battery cells having different lug pitches.

As shown in fig. 2, the base 10 is provided with at least two magnetic element mounting grooves 14 corresponding to at least two magnetic elements 62 one by one, the at least two magnetic element mounting grooves 14 are arranged on the base 10 at intervals along a first direction, the magnetic element mounting grooves 14 extend along the first direction, and the magnetic elements 62 are arranged in the corresponding magnetic element mounting grooves 14. When installed, the magnetic members 62 are tightly fitted into the corresponding magnetic member mounting grooves 14 and fixed by glue bonding.

In this embodiment, the adjusting rods 41 are made of stainless steel, the adjusting rings 42 are made of stainless steel, the adjusting rods 41 are at least two corresponding to the at least two lug pressing claws 30 one by one, the at least two adjusting rods 41 are arranged at intervals along the first direction, and each adjusting rod 41 is sleeved with two adjusting rings 42. The use of stainless steel can promote the service life of the adjustment lever 41 and the adjustment ring 42.

As shown in fig. 1, the battery tab welding fixture further includes at least two receiving members 63 corresponding to the at least two tab pressing claws 30 one to one, the at least two receiving members 63 are disposed on the base 10 at intervals along the first direction, the receiving members 63 are of a strip-shaped structure extending along the first direction, and the receiving members 63 have tab placement positions. The receiving piece 63 is made of high-melting-point metal, can not be melted in the welding process, and has the advantage of good heat dissipation.

In this embodiment, when the two cell positioning members 20 clamp the cell, the tab of the cell can be set up in the tab placement position, and it should be noted that the tab placement position refers to the upper surface of the receiving member 63.

In this embodiment, the socket 63 is made of metallic copper.

Specifically, the supporting member 63 may be an integrally formed elongated structure, and the supporting member 63 may also be a multi-segment spliced elongated structure. The receiving piece 63 with the strip-shaped structure can be suitable for the battery cores with different lug pitches.

As shown in fig. 2, the base 10 is provided with at least two bearing mounting grooves 15 corresponding to at least two bearing 63 one by one, the at least two bearing mounting grooves 15 are arranged on the base 10 at intervals along a first direction, the bearing mounting grooves 15 extend along the first direction, and the bearing 63 is arranged in the corresponding bearing mounting groove 15.

The technical scheme provided by the embodiment has the following beneficial effects:

(1) Through moving the battery cell positioning piece 20 and the tab pressing claw 30, the battery cell tab welding jig can be suitable for battery cells with different tab distances and different sizes, the application range of the battery cell tab welding jig is enlarged, the variety and the number of the battery cell tab welding jig are reduced, and meanwhile, the processing cost and the maintenance cost of enterprises on the battery cell tab welding jig are reduced;

(2) In the process of clamping the battery cells by the two battery cell positioning pieces 20, the buffer effect of the buffer piece 50 is utilized to avoid the damage of the battery cell positioning pieces 20 to the battery cells;

(3) The detachable jacking plate 61 is utilized, so that the distance between the lug of the battery cell welded on the front side and the upper surface of the base 10 is the same as the distance between the lug of the battery cell welded on the back side and the upper surface of the base 10, the battery cell lug welding jig can be matched with the battery cell welded on the front side and the battery cell welded on the back side, and the application range of the battery cell lug welding jig is enlarged.

It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of example embodiments in accordance with the present application. As used herein, the singular is also intended to include the plural unless the context clearly indicates otherwise, and furthermore, it is to be understood that the terms "comprises" and/or "comprising" when used in this specification are taken to specify the presence of stated features, steps, operations, devices, components, and/or combinations thereof.

The relative arrangement of the components and steps, numerical expressions and numerical values set forth in these embodiments do not limit the scope of the present utility model unless it is specifically stated otherwise. Meanwhile, it should be understood that the sizes of the respective parts shown in the drawings are not drawn in actual scale for convenience of description. Techniques, methods, and apparatus known to one of ordinary skill in the relevant art may not be discussed in detail, but are intended to be part of the specification where appropriate. In all examples shown and discussed herein, any specific values should be construed as merely illustrative, and not a limitation. Thus, other examples of the exemplary embodiments may have different values. It should be noted that: like reference numerals and letters denote like items in the following figures, and thus once an item is defined in one figure, no further discussion thereof is necessary in subsequent figures.

In the description of the present utility model, it should be understood that the azimuth or positional relationships indicated by the azimuth terms such as "front, rear, upper, lower, left, right", "lateral, vertical, horizontal", and "top, bottom", etc., are generally based on the azimuth or positional relationships shown in the drawings, merely to facilitate description of the present utility model and simplify the description, and these azimuth terms do not indicate and imply that the apparatus or elements referred to must have a specific azimuth or be constructed and operated in a specific azimuth, and thus should not be construed as limiting the scope of protection of the present utility model; the orientation word "inner and outer" refers to inner and outer relative to the contour of the respective component itself.

Spatially relative terms, such as "above … …," "above … …," "upper surface at … …," "above," and the like, may be used herein for ease of description to describe one device or feature's spatial location relative to another device or feature as illustrated in the figures. It will be understood that the spatially relative terms are intended to encompass different orientations in use or operation in addition to the orientation depicted in the figures. For example, if the device in the figures is turned over, elements described as "above" or "over" other devices or structures would then be oriented "below" or "beneath" the other devices or structures. Thus, the exemplary term "above … …" may include both orientations of "above … …" and "below … …". The device may also be positioned in other different ways (rotated 90 degrees or at other orientations) and the spatially relative descriptors used herein interpreted accordingly.

In addition, the terms "first", "second", etc. are used to define the components, and are only for convenience of distinguishing the corresponding components, and the terms have no special meaning unless otherwise stated, and therefore should not be construed as limiting the scope of the present utility model.

The above description is only of the preferred embodiments of the present utility model and is not intended to limit the present utility model, but various modifications and variations can be made to the present utility model by those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present utility model should be included in the protection scope of the present utility model.

Claims (10)

1. The utility model provides a battery cell utmost point ear welding jig which characterized in that, battery cell utmost point ear welding jig includes:

a base (10) provided with a cell placement position (11);

the two battery cell positioning pieces (20) are arranged on two sides of the battery cell placement position (11) at intervals along a first direction, and at least one battery cell positioning piece (20) is movably arranged relative to the base (10) along the first direction;

the electrode lug pressing claws (30) are arranged at intervals along the first direction, and the electrode lug pressing claws (30) extend along a second direction perpendicular to the first direction;

the lug pressing claw (30) is rotatably arranged on the adjusting rod (41) around the axis of the adjusting rod (41), and the lug pressing claw (30) can move along the axis of the adjusting rod (41).

2. The welding jig for the battery cell tabs according to claim 1, wherein the pressing claw adjusting member (40) further comprises an adjusting ring (42) movably sleeved on the adjusting rod (41), and the adjusting ring (42) is attached to two sides of each tab pressing claw (30).

3. The welding jig for the battery cell tab according to claim 2, wherein the pressing claw adjusting member (40) further includes a limit screw penetrating the adjusting ring (42) in a radial direction of the adjusting ring (42) and capable of abutting against the adjusting rod (41).

4. The battery cell tab welding jig according to claim 1, wherein the battery cell positioning member (20) comprises a positioning plate (21) and a guide rod (22), the positioning plate (21) extends along the second direction, the positioning plate (21) has a positioning surface (211) corresponding to the battery cell, the guide rod (22) extends along the first direction and is connected with one side, away from the positioning surface (211), of the positioning plate (21), and the guide rod (22) is slidably connected with the base (10).

5. The welding jig for battery cell tabs according to claim 4, wherein,

the battery cell tab welding jig further comprises a guide screw arranged on the base (10), the guide rod (22) is provided with a strip-shaped hole (221) extending along the first direction, and the guide screw is movably penetrated in the strip-shaped hole (221) along the extending direction of the strip-shaped hole (221); and/or the number of the groups of groups,

the cell positioning piece (20) comprises two guide rods (22), wherein the two guide rods (22) are respectively connected with two ends of the positioning plate (21) and are positioned on one side, far away from the positioning surface (211), of the guide rods (22).

6. The battery cell tab welding jig according to claim 4, further comprising a buffer member (50), wherein the buffer member (50) is disposed on the positioning surface (211).

7. The battery cell tab welding jig according to claim 6, wherein the buffer member (50) includes:

a buffer plate (51);

the buffer pin (52) is movably arranged on the positioning plate (21) in a penetrating manner along the first direction, and the buffer pin (52) is fixedly connected with the buffer plate (51);

and a buffer spring (53) sleeved on the buffer pin (52), wherein one end of the buffer spring (53) is abutted against the buffer plate (51), and the other end of the buffer spring (53) is abutted against the positioning surface (211).

8. The battery cell tab welding jig according to claim 7, wherein the base (10) is provided with a guide groove (12) extending in the first direction, and the lower end of the buffer plate (51) is movably disposed in the guide groove (12) in the first direction.

9. The battery cell tab welding jig according to any one of claims 1 to 8, further comprising a lifting plate (61) disposed parallel to the base (10), the lifting plate (61) being detachably disposed on the battery cell placement site (11).

10. The welding jig for battery cell tabs according to any one of claims 1 to 8,

the battery cell tab welding jig further comprises at least two magnetic pieces (62) which are in one-to-one correspondence with at least two tab pressing claws (30), wherein the at least two magnetic pieces (62) are arranged on the base (10) at intervals along the first direction, the magnetic pieces (62) are of long strip-shaped structures extending along the first direction, and the tab pressing claws (30) are made of ferromagnetic materials;

the battery cell tab welding jig further comprises at least two bearing pieces (63) corresponding to the tab pressing claws (30) one by one, the at least two bearing pieces (63) are arranged on the base (10) at intervals along the first direction, the bearing pieces (63) are of long-strip-shaped structures extending along the first direction, and the bearing pieces (63) are provided with tab placing positions.