CN219310322U - Pin welding compaction tool - Google Patents

Abstract

The utility model belongs to the technical field of batteries, and discloses a pin welding and compacting tool. The pin welding and compacting tool comprises a bottom plate, a bottom supporting assembly and a compacting assembly, wherein the bottom supporting assembly comprises an elastic piece and a bearing piece, one end of the elastic piece is abutted to the bottom plate, the other end of the elastic piece is connected with the bearing piece, and the bearing piece is used for bearing a battery provided with pins or is used for bearing a jig provided with the battery and the pins; the pressing assembly comprises a driving piece and a pressing piece, the pressing piece is connected with the output end of the driving piece, the driving piece can drive the pressing piece to move along the vertical direction to press or loosen the pins, the pressing piece is provided with a through hole, and laser welding rays can pass through the through hole; the driving force of the driving member is smaller than the elastic force of the elastic member. This participate in welding compresses tightly frock can compress tightly the participate in behind the battery and carry out laser welding to it, and the welding position is accurate, and the battery after the welding is taken off rapidly, improves and gets a efficiency.

Description

Pin welding compaction tool

Technical Field

The utility model relates to the technical field of batteries, in particular to a pin welding and compacting tool.

Background

After the battery is manufactured, pins are welded at positive and negative poles of the battery, the existing pins are welded, the pins and the battery are placed in a special spot welding die by staff, and then the pins and the battery are subjected to spot welding through resistance welding equipment. On the one hand, because of the instability of the resistance welding spot welder equipment, spot welding is unstable, pins fall off, so that the positive production of the battery cannot be influenced, on the other hand, the size of a positive electrode terminal of the battery is smaller, and the electrode terminal with smaller size cannot be welded due to larger welding pin spacing during spot welding. However, the operator is easy to be accidentally injured by the manual operation of laser welding, the pins to be welded of the battery box are fixed by the pressing device, and after the welding is finished, the speed of taking the parts is reduced due to the fact that the withdrawing speed of the fixing device is low.

Therefore, there is a need to design a pin welding and pressing tool to solve the above-mentioned problems.

Disclosure of Invention

The utility model aims to provide a pin welding compaction tool which can be used for carrying out laser welding on a pin after the pin is compacted on a battery, the welding position is accurate, the welded battery is rapidly taken down, and the workpiece taking efficiency is improved.

To achieve the purpose, the utility model adopts the following technical scheme:

the welding of participating in compresses tightly frock for two are assisted to weld the both ends of battery respectively with two participating in, above-mentioned welding of participating in compresses tightly frock and includes:

a bottom plate;

the bottom supporting assembly comprises an elastic piece and a bearing piece, one end of the elastic piece is abutted against the bottom plate, the other end of the elastic piece is connected with the bearing piece, and the bearing piece is used for bearing the battery provided with the pins or a jig provided with the battery and the pins; and

the pressing assembly comprises a driving piece and a pressing piece, the pressing piece is connected with the output end of the driving piece, the driving piece can drive the pressing piece to move along the vertical direction so as to press or loosen the pins, the pressing piece is provided with a through hole, and laser welding rays can pass through the through hole; the driving force of the driving member is smaller than the elastic force of the elastic member.

Optionally, a limiting groove is formed on the upper surface of the bearing member, and the size of the limiting groove in the first direction is adapted to the diameter of the battery.

Optionally, the pins are needle-shaped, and a first avoiding groove is formed in the bottom of the limiting groove.

Optionally, the jig includes:

a bottom support part for carrying the battery, wherein the bottom support part can be arranged on the upper surface of the carrying piece;

a first limiting part connected with the bottom support part and capable of surrounding at least part of the periphery of the battery, wherein one end of the first limiting part, which is away from the bottom support part, is provided with a pin slot, and both pins can be limited by the pin slot; the first limiting part is provided with a second avoidance groove at one end close to the bottom support part, and the two pins can be inserted into the second avoidance groove.

Optionally, the upper surface of the bearing piece is provided with a limiting groove, the groove bottom of the limiting groove is provided with a first avoiding groove, the jig further comprises a limiting block, the limiting block is connected with the lower side of the bottom support part, and the dimension of the limiting block in the first direction is matched with the dimension of the limiting groove or the dimension of the first avoiding groove.

Optionally, the above-mentioned backing assembly further includes:

the anti-rotation piece is arranged on the bottom plate, the anti-rotation piece is provided with a cavity, and the elastic piece and at least part of the bearing piece are positioned in the cavity;

the bearing piece can slide up and down along the inner wall of the cavity, and each side wall of the bearing piece can be limited by the anti-rotation piece.

Optionally, the carrier includes:

the battery or the jig with the battery can be placed at one end of the body; and

the second limiting part is convexly arranged at the other end of the body along the circumferential direction of the body;

the anti-rotation part is provided with a first cavity and a second cavity which are communicated, the body can slide along the inner wall of the first cavity, the second limiting part can slide along the inner wall of the second cavity, and the second limiting part can be limited by the second cavity in the vertical direction.

Optionally, the compressing assembly further includes a limiting member, the limiting member is vertically installed below the compressing member, and an outer periphery of the battery can be abutted against the limiting member.

Optionally, the limiting member includes:

a fixing part which is arranged below the pressing piece; and

and an adjusting part detachably connected to the fixing part, wherein the functional profile of the adjusting part is adapted to the outer peripheral shape of the battery, and the battery can be abutted against the adjusting part.

Optionally, the pressing assembly further includes:

a mounting plate vertically mounted on the bottom plate, and the driving member is mounted on the mounting plate;

one end of the connecting plate is connected with the output end of the driving piece, and the other end of the connecting plate is connected with the pressing piece; and

one of the guide rail and the sliding block is arranged on the connecting plate, the other one of the guide rail and the sliding block is arranged on the mounting plate, and the guide rail extends along the vertical direction and is connected with the sliding block in a sliding fit manner.

The utility model has the beneficial effects that:

the utility model provides a pin welding and compacting tool, which is characterized in that an elastic piece is arranged below a bearing piece, after a battery or a jig is placed on the bearing piece, a driving piece drives a compacting piece to compact pins on the battery, the elasticity of the elastic piece below is larger than the compacting force, the bearing piece cannot move up and down, then laser welding is carried out, the welding position is accurate, and the welding reliability is high; after the welding is finished, the battery is manually pressed while the driving piece drives the compressing piece to move upwards, the elastic piece is compressed, the bearing piece is sunk, the welded battery is separated from the compressing piece, the piece taking speed is high, and the production efficiency is improved.

Drawings

Fig. 1 is a schematic structural diagram of a pin welding and compacting tool according to an embodiment of the present utility model;

fig. 2 is a schematic structural diagram of a pin welding and compacting tool set provided in a second embodiment of the present utility model;

fig. 3 is a schematic structural diagram of a pin welding and compacting tool according to a second embodiment of the present utility model.

In the figure:

10. a bottom plate; 20. a backing assembly; 21. an elastic member; 22. an anti-rotation member; 221. an anti-rotation part; 2211. a second chamber; 2212. a symmetrical part; 22121. a first direction limiting block; 22122. a second direction limiting plate; 22123. a reinforcing part; 2221. a third chamber;

23. a carrier; 231. a body; 2311. a limit groove; 2312. a first avoidance groove; 232. a second limit part;

30. a compression assembly; 31. a driving member; 32. a pressing member; 321. a via hole; 33. a limiting piece; 34. a mounting plate; 35. a connecting plate; 36. a guide rail; 37. a slide block;

40. a jig; 41. a bottom support part; 42. a first limit part; 421. a pin slot; 422. a second avoidance groove; 43. a limiting block;

200. a battery assembly; 210. a battery; 220. pins.

Detailed Description

The utility model is described in further detail below with reference to the drawings and examples. It is to be understood that the specific embodiments described herein are merely illustrative of the utility model and are not limiting thereof. It should be further noted that, for convenience of description, only some, but not all of the structures related to the present utility model are shown in the drawings.

In the description of the present utility model, unless explicitly stated and limited otherwise, the terms "connected," "connected," and "fixed" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communicated with the inside of two elements or the interaction relationship of the two elements. The specific meaning of the above terms in the present utility model will be understood in specific cases by those of ordinary skill in the art.

In the present utility model, unless expressly stated or limited otherwise, a first feature "above" or "below" a second feature may include both the first and second features being in direct contact, as well as the first and second features not being in direct contact but being in contact with each other through additional features therebetween. Moreover, a first feature being "above," "over" and "on" a second feature includes the first feature being directly above and obliquely above the second feature, or simply indicating that the first feature is higher in level than the second feature. The first feature being "under", "below" and "beneath" the second feature includes the first feature being directly under and obliquely below the second feature, or simply means that the first feature is less level than the second feature.

In the description of the present embodiment, the terms "upper", "lower", "left", "right", and the like are orientation or positional relationships based on those shown in the drawings, merely for convenience of description and simplicity of operation, and do not indicate or imply that the apparatus or elements referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as limiting the utility model. Furthermore, the terms "first," "second," and the like, are used merely for distinguishing between descriptions and not for distinguishing between them.

Example 1

The embodiment provides a pin welding compaction tool, which is used for assisting in welding two pins 220 to two ends of a battery 210 respectively to form a battery assembly 200, and the pin welding compaction tool can compress the pins 220 to the battery 210 and then carry out laser welding on the pins, so that the welding position is accurate, the welded battery 210 is taken down rapidly, and the taking efficiency is improved. As shown in fig. 1, the pin welding and compacting tool comprises a bottom plate 10, a bottom supporting assembly 20 and a compacting assembly 30, wherein the bottom supporting assembly 20 comprises an elastic piece 21 and a bearing piece 23, one end of the elastic piece 21 is abutted to the bottom plate 10, the other end of the elastic piece is connected with the bearing piece 23, and the bearing piece 23 is used for bearing a battery 210 provided with pins 220; the pressing assembly 30 comprises a driving piece 31 and a pressing piece 32, the pressing piece 32 is connected with the output end of the driving piece 31, the driving piece 31 can drive the pressing piece 32 to move along the vertical direction so as to press or loosen the pins 220, the pressing piece 32 is provided with a through hole 321, and laser welding rays can pass through the through hole 321; the driving force of the driving member 31 is smaller than the elastic force of the elastic member 21. According to the pin welding and compacting tool, the elastic piece 21 is arranged below the bearing piece 23, after the battery 210 or the jig 40 is placed on the bearing piece 23, the driving piece 31 drives the compacting piece 32 to compact the pin 220 on the battery 210, the elastic force of the elastic piece 21 below is larger than the compacting force, the bearing piece 23 cannot move up and down, laser welding is performed later, the welding position is accurate, and the welding reliability is high; after the welding is completed, as the driving member 31 drives the pressing member 32 to move upwards, the battery 210 is manually pressed, the elastic member 21 is compressed, and the bearing member 23 is sunk, so that the welded battery 210 is separated from the pressing member 32, the workpiece taking speed is high, and the production efficiency is improved.

Preferably, the upper surface of the carrier 23 is provided with a limiting groove 2311, the size of the limiting groove 2311 in the first direction (X direction in the drawing) is adapted to the diameter of the battery 210, and through the above arrangement, after the pins 220 are pre-mounted to one end of the poles of the battery 210, the pins are placed in the limiting groove 2311, so that the battery 210 can be limited in the X direction. Preferably, the limiting groove 2311 is opened at one end in the second direction (Y direction in the drawing), the functional surface of the other end is adapted to the outer peripheral surface of the battery 210, the other end of the limiting groove 2311 can limit the battery 210 below the pressing member 32, and through the above arrangement, the Y direction is also limited when the battery 210 is placed on the carrier 23, so that the complicated step of manual alignment is omitted.

Since the two ends of the battery 210 need to be soldered with the pins 220, the pins 220 of this embodiment are needle-shaped as shown in fig. 1, i.e. after soldering the pins 220 at one end, the soldered pins 220 interfere with the carrier 23 when the pins 220 at the other end are soldered with the battery 210 upside down; and prior to soldering such pins 220 are preloaded onto the ends of the poles of the battery 210, the underlying preloaded pin 220 also interferes with the carrier 23 during soldering of the first end. In order to solve the above-mentioned problem, as shown in fig. 1, the bottom of the limiting groove 2311 is provided with a first avoiding groove 2312, and the needle-shaped pins 220 can be placed in the first avoiding groove 2312, so as to avoid the interference deformation of the needle-shaped pins 220 and the bearing member 23.

Preferably, as shown in fig. 1, the supporting base assembly 20 further includes an anti-rotation member 22, the anti-rotation member 22 is mounted on the bottom plate 10, the anti-rotation member 22 is provided with a cavity (not labeled), and the elastic member 21 and at least part of the bearing member 23 are located inside the cavity; the bearing member 23 can slide up and down along the inner wall of the cavity, and each side wall of the bearing member 23 can be limited by the anti-rotation member 22. With the above arrangement, when the operator takes the parts, the elastic member 21 is compressed, and the carrier 23 is prevented from rotating or shaking.

In this embodiment, as shown in fig. 1 and 2, the anti-rotation portion 221 includes two symmetrical portions 2212 symmetrical with respect to a vertical plane passing through the Y direction, a cavity is formed between the two symmetrical portions 2212, the symmetrical portions 2212 includes a reinforcing portion 22123, a first direction limiting block 22121 and two second direction limiting plates 22122, the reinforcing portion 22123 is mounted on the bottom plate 10 and extends along the X direction, the first direction limiting block 22121 is vertically mounted on the reinforcing portion 22123 and extends along the Y direction, the two second direction limiting plates 22122 are respectively mounted on two ends of the first direction limiting block 22121 along the Y direction and protrude out of the first direction limiting block 22121 in the X direction towards one side of the cavity, through the above arrangement, the reinforcing portion 22123 improves the anti-tilting capability of the anti-rotation member 22, the first direction limiting block 22121 and the second direction limiting plates 22122 limit the carrier 23 together, so as to prevent the carrier 23 from swinging or tilting towards a certain direction, and to more intuitively see the carrier 23 and the state of the elastic member 21 from the outside, thereby facilitating maintenance and finding problems. In other embodiments, the first direction limiting block 22121 and the second direction limiting block 22122 may be integrally formed as a ring body, and may be disposed around the outer periphery of the carrier 23, so as to achieve the effects of preventing rotation and tilting.

Further, a third cavity 2221 is formed between the two reinforcement portions 22123, and a part of the elastic member 21 is located in the third cavity 2221.

Preferably, the carrier 23 includes a body 231 and a second limiting portion 232, and the battery 210 can be placed at one end of the body 231; a second limiting portion 232 protruding from the other end of the body 231 along the circumferential direction of the body 231; the anti-rotation member 22 is provided with a first cavity (which is coincident with the body 231 and is not marked) and a second cavity 2211 which are communicated, the body 231 can slide along the inner wall of the first cavity, the second limiting part 232 can slide along the inner wall of the second cavity 2211, the second limiting part 232 can be limited by the second cavity 2211 in the vertical direction, through the arrangement, due to the limiting effect of the second cavity 2211, the bearing member 23 has the highest value and the lowest value in the up-and-down moving process, on one hand, excessive pressing force of hands is prevented, the elastic member 21 is prevented from being compressed, the fatigue damage of the elastic member 21 is easily caused for a long time, on the other hand, the elastic member 21 is often required to be replaced, the lengths of different elastic members 21 can be slightly different, even if the replaced elastic member 21 is overlong, the upper limit is set, the proper jacking height of the bearing member 23 can be ensured, and therefore a sufficient space is reserved for placing the battery 210.

Preferably, as shown in fig. 1, the compressing assembly 30 further includes a limiting member 33, the limiting member 33 is vertically installed below the compressing member 32, the periphery of the battery 210 can be abutted against the limiting member 33, through the above arrangement, the limiting member 33 and the tail end of the limiting groove 2311 limit the upper end and the lower end of the battery 210 respectively, and the battery 210 is more stable during welding.

Because the sizes of the batteries 210 are different, after the diameters of the batteries 210 are changed, the limiting grooves 2311 cannot be adapted to the batteries 210 with the changed diameters, and the positioning of the batteries 210 is performed only by the limiting piece 33 for positioning welding, but the limiting surface of the limiting piece 33 is also a fixed molded surface, and cannot be adapted to the batteries 210 with different diameters. In order to solve the above-described problem, the stopper 33 includes a fixing portion and an adjusting portion (not shown in the figure, since the adjusting portion is not shown, the article denoted by 33 in fig. 1 is also a fixing portion), and the fixing portion is installed below the pressing member 32; the adjusting part is detachably connected to the fixing part, the functional profile of the adjusting part is adapted to the peripheral shape of the battery 210, the battery 210 can be abutted against the adjusting part, through the arrangement, the profile diameter of the fixing part is larger in advance, if the battery 210 with smaller diameter is encountered, the size of the limiting profile of the whole limiting part 33 is adjusted by the adjusting part so as to adapt to the limitation of the batteries 210 with different diameters. Alternatively, the adjusting part may be a spacer, and the thickness of the spacer is more and the adjustable range is larger. Alternatively, the spacer may be attached to the fixing portion by means of adhesive.

Preferably, as shown in fig. 1, the compressing assembly 30 further includes a mounting plate 34, a connecting plate 35, a guide rail 36, and a slider 37, the mounting plate 34 is vertically mounted to the base plate 10, and the driving member 31 is mounted to the mounting plate 34; one end of a connecting plate 35 is connected to the output end of the driving piece 31, and the other end of the connecting plate 35 is connected with the pressing piece 32; guide rail 36 and slider 37, one of them in guide rail 36 and slider 37 is installed in connecting plate 35, and the mounting panel 34 is installed to another of them, and guide rail 36 extends along vertical direction and is connected with slider 37 sliding fit, through above-mentioned setting, with driver 31 integration to bottom plate 10 on, whole frock is convenient to move, and the setting of guide rail 36 and slider 37 for driver 31 is accurate to be driven along vertical direction, and then guarantees the compress tightly accuracy of compressing tightly piece 32.

Example two

As shown in fig. 2 and 3, the difference between the present embodiment and the first embodiment is that the battery 210 and the pins 220 are not preassembled together before welding, that is, the battery assembly 200 cannot be directly and stably placed on the carrier 23, in order to solve the above problem, the pin welding and pressing tool of the present embodiment further includes a jig 40, the pins 220 and a part of the battery 210 are placed in the jig 40, the jig 40 can be placed on the carrier 23, and the battery 210 and the pins 220 are stably placed by the arrangement of the jig 40 and then pressed and welded. It can be appreciated that by the arrangement of the jig 40, the pin welding press fixture can be adapted to the battery assembly 200 in at least the first and second embodiments, and the suitability of the pin welding press fixture is improved.

Preferably, as shown in fig. 2 and 3, the jig 40 includes a bottom support portion 41 and a first limiting portion 42, the bottom support portion 41 is used for carrying the battery 210, and the bottom support portion 41 can be placed on the upper surface of the carrying member 23; the first limiting portion 42 is connected with the bottom support portion 41 and can surround at least part of the periphery of the battery 210, one end, away from the bottom support portion 41, of the first limiting portion 42 is provided with a pin slot 421, and two pins 220 can be limited by the pin slot 421. The second avoidance groove 422 is formed in one end, close to the bottom support portion 41, of the first limiting portion 42, the second avoidance groove 422 can be inserted into the two pins 220, through the arrangement, after the battery 210 is placed on the bottom support portion 41, the battery 210 is pushed into the first limiting portion 42 in a butt mode, the pins 220 needing to be welded are placed in the pin grooves 421, the jig 40 is placed on the bearing piece 23 to be welded, after one pin 220 is welded, the battery 210 is inverted, when the other pin 220 is welded, the previous pin 220 can extend into the second avoidance groove 422, interference with the first limiting portion 42 does not occur, and accordingly the jig 40 can be suitable for placing of the pins 220 at two ends of the battery 210.

In this embodiment, the shapes of the two pins 220 are different, and the pin slot 421 and the second avoiding slot 422 are overlapped shapes of the two pins 220, so that the pin slot 421 and the second avoiding slot 422 can be adapted to the two pins 220.

Preferably, the jig 40 further includes a stopper 43, the stopper 43 is connected to the lower side of the bottom bracket 41, and the dimension of the stopper 43 in the X direction is adapted to the dimension of the stopper slot 2311 or the first avoiding slot 2312. Through the above arrangement, the jig 40 is also limited when placed on the carrier 23, so as to prevent the jig 40 from moving along the X direction.

It should be noted that the jig 40 can also be placed at one end of the body 231 in the first embodiment.

Similarly, in the first embodiment, the arrangement of the pressing assembly 30 and the bottom supporting assembly 20 is also applicable to the jig 40 or the battery 210 in the second embodiment, and will not be described herein.

It is to be understood that the above examples of the present utility model are provided for clarity of illustration only and are not limiting of the embodiments of the present utility model. Various obvious changes, rearrangements and substitutions can be made by those skilled in the art without departing from the scope of the utility model. It is not necessary here nor is it exhaustive of all embodiments. Any modification, equivalent replacement, improvement, etc. which come within the spirit and principles of the utility model are desired to be protected by the following claims.

Claims (10)

1. Pin welding compaction tooling for assisting in welding two pins (220) to two ends of a battery (210) respectively, the pin welding compaction tooling comprising:

a bottom plate (10);

the support bottom assembly (20) comprises an elastic piece (21) and a bearing piece (23), one end of the elastic piece (21) is abutted to the bottom plate (10), the other end of the elastic piece is connected with the bearing piece (23), and the bearing piece (23) is used for bearing a battery (210) provided with the pins (220) or the bearing piece (23) is used for bearing a jig (40) provided with the battery (210) and the pins (220); and

the compressing assembly (30) comprises a driving piece (31) and a compressing piece (32), the compressing piece (32) is connected with the output end of the driving piece (31), the driving piece (31) can drive the compressing piece (32) to move along the vertical direction so as to compress or loosen the pins (220), the compressing piece (32) is provided with a through hole (321), and laser welding rays can pass through the through hole (321); the driving force of the driving member (31) is smaller than the elastic force of the elastic member (21).

2. Pin welding compaction tool according to claim 1, wherein the upper surface of the carrier (23) is provided with a limit groove (2311), the size of the limit groove (2311) in the first direction being adapted to the diameter of the battery (210).

3. The pin welding and pressing tool according to claim 2, wherein the pin (220) is needle-shaped, and the groove bottom of the limit groove (2311) is provided with a first avoiding groove (2312).

4. Pin welding compaction fixture according to claim 1, wherein the fixture (40) comprises:

a shoe portion (41) for carrying the battery (210), the shoe portion (41) being capable of being placed on an upper surface of the carrier (23);

the first limiting part (42) is connected with the bottom support part (41) and can surround at least part of the periphery of the battery (210), one end of the first limiting part (42) away from the bottom support part (41) is provided with a pin slot (421), and two pins (220) can be limited by the pin slot (421); the first limiting part (42) is close to one end of the bottom support part (41) and is provided with a second avoiding groove (422), and the two pins (220) can be inserted into the second avoiding groove (422).

5. The pin welding compaction tool according to claim 4, wherein a limit groove (2311) is formed in the upper surface of the carrier (23), a first avoiding groove (2312) is formed in the groove bottom of the limit groove (2311), the tool (40) further comprises a limit block (43), the limit block (43) is connected with the lower side of the bottom support portion (41), and the size of the limit block (43) in the first direction is matched with the size of the limit groove (2311) or the size of the first avoiding groove (2312).

6. The pin welding compaction fixture according to any one of claims 1-5, wherein the backing assembly (20) further comprises:

the anti-rotation piece (22) is arranged on the bottom plate (10), the anti-rotation piece (22) is provided with a cavity, and the elastic piece (21) and at least part of the bearing piece (23) are positioned in the cavity;

the bearing piece (23) can slide up and down along the inner wall of the cavity, and each side wall of the bearing piece (23) can be limited by the anti-rotation piece (22).

7. Pin welding compaction fixture according to claim 6, wherein the carrier (23) comprises:

a body (231), wherein the battery (210) or the jig (40) with the battery (210) can be placed at one end of the body (231); and

a second limit part (232) protruding from the other end of the body (231) along the circumferential direction of the body (231);

the anti-rotation piece (22) is provided with a first cavity and a second cavity (2211) which are communicated, the body (231) can slide along the inner wall of the first cavity, the second limiting part (232) can slide along the inner wall of the second cavity (2211), and the second limiting part (232) can be limited by the second cavity (2211) in the vertical direction.

8. Pin welding compaction tool according to any one of claims 1-5, wherein the compaction assembly (30) further comprises a limiting element (33), the limiting element (33) is vertically mounted below the compaction element (32), and the outer periphery of the battery (210) can abut against the limiting element (33).

9. Pin welding compaction fixture according to claim 8, wherein the limit piece (33) comprises:

a fixing part which is arranged below the pressing piece (32); and

and an adjustment part detachably connected to the fixing part, wherein the functional profile of the adjustment part is adapted to the outer peripheral shape of the battery (210), and the battery (210) can be abutted against the adjustment part.

10. Pin welding compaction fixture according to any one of claims 1-5, wherein the compaction assembly (30) further comprises:

a mounting plate (34) vertically mounted to the base plate (10), the driving member (31) being mounted to the mounting plate (34);

one end of the connecting plate (35) is connected with the output end of the driving piece (31), and the other end of the connecting plate (35) is connected with the pressing piece (32); and

one of the guide rail (36) and the sliding block (37) is installed on the connecting plate (35), the other one of the guide rail (36) and the sliding block (37) is installed on the mounting plate (34), and the guide rail (36) extends along the vertical direction and is connected with the sliding block (37) in a sliding fit mode.

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