Battery cell welding jig and welding machine

Abstract

The utility model belongs to the technical field of battery cell processing, and particularly relates to a battery cell welding jig and a welding machine. A mounting hole and a mounting groove are further formed in the base; the mounting groove is communicated with the placing groove; and a clamping device. The clamping device comprises a pushing component, a traction component and a clamping component; the pushing part is arranged in the mounting hole; one end of the pushing part penetrates through the bottom of the mounting hole and is connected with one end of the traction part; the traction component is arranged at the bottom of the base; the other end of the traction component is connected to the clamping component; the clamping part is arranged in the placing groove; and the clamping part can move towards or away from the placing groove. According to the utility model, the protection effect on the battery cell structure can be realized, and the convenience and efficiency of operation are improved.

Description

Technical Field

[0001] This utility model belongs to the field of battery cell processing technology, and in particular relates to a battery cell welding fixture and welding machine. Background Technology

[0002] New energy, also known as unconventional energy, refers to various energy forms that differ from traditional energy sources such as oil and coal. Specifically, it can include the rapidly developing lithium batteries. Lithium batteries have advantages such as long lifespan and high energy density, and are therefore widely used in portable electronic devices, automobiles, and many other fields. A lithium battery consists of a cell and a casing; during the assembly and production process, the lithium battery cell and external connecting components need to be welded together.

[0003] However, some existing welding fixtures rely on a single-sided spring block combined with a spring and a pin to achieve reciprocating motion; however, they require manual manipulation or direct insertion of the battery cell body by force and then repositioning, which is inconvenient and can easily cause scratches on the outer surface of the battery cell body; thus, the stability and convenience of operation are poor. Utility Model Content

[0004] The purpose of this utility model is to provide a battery cell welding fixture that addresses the shortcomings of existing technologies, thereby solving the technical problems of poor operational stability and convenience.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] A battery cell welding fixture, comprising:

[0007] The base has a placement groove; the base also has mounting holes and mounting slots; the mounting slots communicate with the placement grooves.

[0008] The device includes a clamping mechanism; the clamping mechanism comprises a pushing component, a traction component, and a clamping component; the pushing component is disposed within the mounting hole; one end of the pushing component passes through the bottom of the mounting hole and is connected to one end of the traction component; the traction component is disposed at the bottom of the base; the other end of the traction component is connected to the clamping component; the clamping component is disposed in the placement groove; and the clamping component is capable of moving toward or away from the placement groove.

[0009] Preferably, the bottom of the base is provided with a limiting groove; the limiting groove communicates with the mounting hole; the limiting groove communicates with the mounting groove; and the bottom of the pushing component extends into the limiting groove; the traction component is movably connected to the inside of the limiting groove; and the bottom of the clamping component extends into the limiting groove.

[0010] Preferably, the bottom of the pushing component is provided with a first contact slope; the end of the traction component facing the pushing component is provided with a second contact slope corresponding to the first contact slope; the other end of the traction component is elastically connected to the bottom of the base; and the other end of the clamping component is elastically connected to the mounting groove.

[0011] Preferably, the traction component includes a traction plate and a first elastic element; the second contact slope is disposed at one end of the traction plate facing the pushing component; the other end of the traction plate away from the pushing component is connected to one end of the first elastic element; the other end of the first elastic element is connected to the base; and the bottom of the clamping component is movably connected to the side surface of the traction plate.

[0012] Preferably, the first elastic element includes a first spring and a first connecting rod; one end of the first connecting rod is connected to the traction plate; the other end of the first connecting rod is movably connected to the base; one end of the first spring is connected to the other end of the first connecting rod; the other end of the first spring abuts against the base; and the first spring is sleeved on the first connecting rod.

[0013] Preferably, the clamping component includes an abutment component connecting plate and a clamping body; the top of the clamping body is elastically connected to the mounting groove; the bottom of the clamping body passes through the bottom of the mounting groove and is connected to one end of the connecting plate; the other end of the connecting plate is connected to one end of the abutment component; the other end of the abutment component abuts against the limiting recess of the traction component.

[0014] Furthermore, the depth of the middle part of the limiting recess is greater than the depth of the two sides.

[0015] Preferably, the abutting component includes an outer support ring, a rotating ball, and an inner support wheel; the inner support wheel is connected to one end of the connecting plate; the rotating ball is disposed between the outer support ring and the inner support wheel; and the outer support ring is movably connected to the interior of the limiting recess.

[0016] Preferably, a second connecting rod is provided on the side surface of the clamping body away from the placement groove; one end of the second connecting rod passes through the base; and a second spring is sleeved on the outer surface of the second connecting rod; the second spring is disposed between the clamping body and the base.

[0017] Preferably, the cell welding fixture further includes a fixing base; the fixing base is detachably connected to the bottom of the base; and the traction component is disposed between the fixing base and the base.

[0018] This utility model also discloses a welding machine, including the battery cell welding fixture described above.

[0019] The beneficial effects of this utility model are as follows: This technical solution uses a placement groove to initially position and limit the battery cell structure, and the clamping component can move towards or away from the placement groove to achieve the clamping effect on battery cell structures of different specifications, and minimizes or eliminates the clamping gap between the clamping component and the battery cell structure, thereby improving the clamping stability of the battery cell structure; in addition, the traction component is hidden at the bottom of the base and the pushing component is set in the mounting hole of the base as a driving source to avoid scratches on the battery cell during the clamping operation, thereby improving the protection of the battery cell structure and improving the convenience and efficiency of operation. Attached Figure Description

[0020] The following will refer to the appendix. Figures 1-5 This section describes the features, advantages, and technical effects of exemplary embodiments of the present invention.

[0021] Figure 1 This is an exploded view of a battery cell welding fixture according to an embodiment of the present invention;

[0022] Figure 2 This is a schematic diagram of the structure of a battery cell welding fixture according to an embodiment of the present invention;

[0023] Figure 3 This is a bottom view of a portion of the structure of a battery cell welding fixture according to an embodiment of the present invention.

[0024] Figure 4 This is a schematic diagram of the clamping device of a battery cell welding fixture according to an embodiment of the present invention;

[0025] Figure 5 This is a partially enlarged view of the clamping device of a battery cell welding fixture according to an embodiment of the present invention.

[0026] In the diagram: 100-base; 110-limiting block; 101-placement groove; 102-mounting groove; 103-mounting hole; 104-limiting groove; 200-clamping device; 210-pushing component; 211-pressing block; 212-first movable block; 213-first contact slope; 220-traction component; 221-traction plate; 2211-second contact slope; 222-first elastic element; 2221-first spring; 2222-First connecting rod; 223-Limiting recess; 230-Clamping component; 231-Abutting component; 2311-Outer support ring; 2312-Rotating ball; 2313-Inner support wheel; 232-Connecting plate; 233-Clamping body; 2331-Support plate; 2332-Clamping plate; 2333-Second connecting rod; 2334-Second spring; 300-Fixed seat; 301-Fixed hole; 310-Positioning pin. Detailed Implementation

[0027] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application pertains; the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the application; the terms “comprising” and “having”, and any variations thereof, in the specification, claims, and foregoing description of the drawings are intended to cover non-exclusive inclusion.

[0028] In the description of the embodiments of this application, technical terms such as "first" and "second" are used only to distinguish different objects and should not be construed as indicating or implying relative importance or implicitly specifying the number, specific order, or primary and secondary relationship of the indicated technical features. In the description of the embodiments of this application, "multiple" means two or more, unless otherwise explicitly defined.

[0029] In this document, the term "embodiment" means that a particular feature, structure, or characteristic described in connection with an embodiment may be included in at least one embodiment of this application. The appearance of this phrase in various places throughout the specification does not necessarily refer to the same embodiment, nor is it a separate or alternative embodiment mutually exclusive with other embodiments. It will be explicitly and implicitly understood by those skilled in the art that the embodiments described herein can be combined with other embodiments.

[0030] In the description of the embodiments in this application, the term "and / or" is merely a description of the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent: A existing alone, A and B existing simultaneously, or multiple situations existing alone. In addition, the character " / " in this document generally indicates that the related objects before and after are in an "or" relationship.

[0031] In the description of the embodiments of this application, unless otherwise expressly specified and limited, technical terms such as "installation," "connection," "joining," and "fixing" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. For those skilled in the art, the specific meaning of the above terms in the embodiments of this application can be understood according to the specific circumstances.

[0032] The following is in conjunction with the appendix Figures 1-5 The present invention will be described in further detail, but this is not intended to limit the scope of the present invention.

[0033] like Figure 1 and 2As shown, in one embodiment of this utility model, the battery cell welding fixture includes a base 100 and a clamping device 200. The base 100 is provided with a placement groove 102 for placing the battery cell structure. The base 100 is also provided with a mounting hole 103 and a mounting groove 102. The mounting groove 102 communicates with the placement groove 102. The clamping device 200 includes a pushing component 210, a traction component 220, and a clamping component 230. The pushing component 210 is disposed in the mounting hole 103. One end of the pushing component 210 passes through the bottom of the mounting hole 103 and is pushed and connected to one end of the traction component 220. The traction component 220 is disposed at the bottom of the base 100. The other end of the traction component 220 is connected to the clamping component 230. The clamping component 230 is disposed in the placement groove 102 and is used to clamp the side end face of the battery cell structure. The clamping component 230 can move toward or away from the placement groove 102.

[0034] The technical solution of this utility model uses a placement groove to initially position and limit the battery cell structure. Combined with the clamping component, which can move towards or away from the placement groove, it can achieve the clamping effect on battery cell structures of different specifications and minimize or eliminate the clamping gap between the clamping component and the battery cell structure, thereby improving the clamping stability of the battery cell structure. In addition, a traction component is hidden at the bottom of the base, and a pushing component is set in the mounting hole of the base as a driving source to avoid scratches on the battery cell during the clamping operation, thereby improving the protection of the battery cell structure and improving the convenience and efficiency of operation.

[0035] Specifically, in some implementations, such as Figure 2 and 3 As shown, the bottom of the base 100 is provided with a limiting groove 104; the limiting groove 104 communicates with the mounting hole 103; the limiting groove 104 communicates with the mounting groove 102; and the bottom of the pushing component 210 extends into the limiting groove 104; the traction component 220 is movably connected to the inside of the limiting groove 104; the bottom of the clamping component 230 extends into the limiting groove 104. The limiting groove 104 is an I-shaped groove; the traction component 220 is movably connected to the straight section on one side of the I-shaped groove; the bottom of the clamping component 230 is movably connected to the T-shaped section on the other side of the I-shaped groove. This structure, through the I-shaped groove, ensures that the pushing component 210 pushes along the Z-axis direction (thickness direction), the traction component 220 moves along the Y-axis direction (width direction) of the I-shaped groove, and the clamping component 230 moves along the X-axis direction (length direction) of the I-shaped groove, mutually transmitting power in three spatial directions: pushing component 210 along the Z-axis (thickness direction), traction component 220 along the Y-axis direction (width direction) of the I-shaped groove, and clamping component 230 along the X-axis direction (length direction) of the I-shaped groove; thereby improving the flexibility and convenience of operation and ensuring the stability of movement.

[0036] In some embodiments, the placement groove 102 is a stepped groove. Since the battery cell structure has outwardly protruding tabs, a stepped groove is necessary to improve the adaptability to the battery cell structure and ensure its placement stability. Furthermore, a limiting block 110 is also provided within the base 100; one end of the limiting block 110 extends to the edge of the placement groove 102; and the limiting block 110 is used to abut against the bottom of the battery cell structure.

[0037] Specifically, in some implementations, such as Figure 2 and 3 As shown, the bottom of the pushing component 210 is provided with a first contact slope 213; the end of the traction component 220 facing the pushing component 210 is provided with a second contact slope 213 corresponding to the first contact slope 213; the other end of the traction component 220 is elastically connected to the bottom of the base 100; the other end of the clamping component 230 is elastically connected to the mounting groove 102. Through the elastic assembly of the traction component 220 and the automatic recovery of the elastic assembly of one end of the clamping component 230, the clamping component 230 can automatically reset after the pushing component 210 pushes down to open one end of the clamping component 230, thereby realizing the clamping operation of the battery cell structure, thus solving the problem of appearance scratches caused by the pressure block squeezing the battery cell product by directly pushing the pressure block with the actual product battery cell; and improving the flexibility and convenience of operation.

[0038] Specifically, in some implementations, such as Figure 2 and 3As shown, the traction component 220 includes a traction plate 221 and a first elastic member 222; the traction plate 221 has a second contact slope 213 corresponding to the first contact slope 213 at one end facing the pushing component 210 (bottom); the other end of the traction plate 221 away from the pushing component 210 (bottom) is connected to one end of the first elastic member 222; the other end of the first elastic member 222 is connected to the base 100 (inner wall of the middle limiting groove 104); the bottom of the clamping component 230 is movably connected to the side surface of the traction plate 221; one end of the clamping component 230 is elastically connected to the mounting groove 102. In other words, through the automatic recovery function of the elastic assembly of the first elastic element 222 and one end of the clamping component 230, the clamping component 230 can automatically reset after the pushing component 210 pushes downward to open one end of the clamping component 230, thereby realizing the clamping operation of the battery cell structure. This solves the problem of appearance scratches caused by the pressure block squeezing the battery cell product directly by pushing the pressure block; and improves the flexibility and convenience of operation. In some embodiments, the inclination angle of the first contact slope 213 is the same as that of the second contact slope 213, and both are α; α satisfies: 30°~45°; preferably 40°. The appropriate inclination angle can ensure the opening range of the clamping component 230 and avoid damage from impact with the base 100.

[0039] In some implementation methods, such as Figure 2 and 3 As shown, the pushing component 210 includes a pressing block 211 and a first movable block 212 connected to each other; the pressing block 211 and the first movable block 212 are arranged in a T-shape; one end of the pressing block 211 extends through the top of the mounting hole 103; the other end of the pressing block 211 extends through the bottom of the mounting hole 103; the first movable block 212 is disposed in the base 100 (inside the middle limiting groove 104); and a first contact slope 213 is disposed on the side surface of the first movable block 212 facing the traction plate 221. This structure, by setting the pressing block 211 and the first movable block 212 in a T-shape, can ensure the smoothness of downward pressing and the stability of upward recovery, preventing the pushing component 210 from falling off the base 100.

[0040] In some implementation methods, such as Figure 2 and 3As shown, the first elastic element 222 includes a first spring 2221 and a first connecting rod 2222; one end of the first connecting rod 2222 is connected to the traction plate 221; the other end of the first connecting rod 2222 is movably connected to the base 100 (inside the middle limiting hole, not shown in the figure); one end of the first spring 2221 is connected to the other end of the first connecting rod 2222; the other end of the first spring 2221 abuts against the base 100 (inner wall of the middle limiting groove 104); and the first spring 2221 is sleeved on the first connecting rod 2222. This structure, through the compression and automatic recovery of the first spring 2221, allows the first connecting rod 2222 and the traction plate 221 to move stably along the Y-axis, thereby enabling the clamping component 230 to be passively opened and automatically reset, thus realizing the clamping operation of the battery cell structure, thereby solving the problem of appearance scratches caused by the pressure block squeezing the battery cell product directly by the actual product battery cell pushing the pressure block; and improving the flexibility and convenience of operation.

[0041] Specifically, in some implementations, such as Figure 3 and 4 As shown, the clamping component 230 includes an abutment component 231, a connecting plate 232, and a clamping body 233. The top of the clamping body 233 is elastically connected to the mounting groove 102. The bottom of the clamping body 233 passes through the bottom of the mounting groove 102 and is connected to one end of the connecting plate 232. The other end of the connecting plate 232 is connected to one end of the abutment component 231. The other end of the abutment component 231 abuts against the limiting recess 223 of the traction component 220 (middle traction plate 221). The depth of the middle part of the limiting recess 223 is greater than the depth of the sides. The limiting recess 223 is an arc-shaped recess. This structure allows the abutment component 231 to move along the tangent of the arc-shaped recess, thereby achieving X-axis pushing motion of the connecting plate 232 and the clamping body 233. This solves the problem of surface scratches caused by the pressure block squeezing the battery cell product directly by pushing the pressure block; and improves the flexibility and convenience of operation.

[0042] Specifically, in some implementations, such as Figure 3 and 4 As shown in Figure 5, the abutting component 231 includes an outer support ring 2311, a rotating ball 2312, and an inner support wheel 2313; the inner support wheel 2313 is connected to one end of the connecting plate 232; the number of rotating balls 2312 is at least three, and they are disposed between the outer support ring 2311 and the inner support wheel 2313; and the outer support ring 2311 is movably connected to the interior of the limiting recess 223. This structure, through the movement of the groove and the cam, can reduce the friction between the abutting component 231 and the limiting recess 223, and increase the movement speed, thereby ensuring orderly movement and extending its service life.

[0043] Specifically, in some implementations, such as Figure 2 and 4 As shown, the clamping body 233 includes a support plate 2331 and at least one clamping plate 2332 connected to one side surface of the support plate 2331; the support plate 2331 is connected to the connecting plate 232; one end of the clamping plate 2332 extends into the mounting groove 102; and the clamping plate 2332 is elastically connected to the mounting groove 102. Wherein, as... Figure 4 As shown, there are two clamping plates 2332, which are symmetrically arranged on the support plate 2331 to form a U-shaped clamping body 233. This enables clamping and positioning operations at two locations on the side surface of the battery cell structure, thereby improving the stability of the clamping.

[0044] Specifically, in some implementations, such as Figure 1 , 2 As shown in Figure 4, a second connecting rod 2333 is provided on the side surface of the clamping body 233 (middle clamping plate 2332) away from the placement groove 101; one end of the second connecting rod 2333 passes through the base 100; and a second spring 2334 is sleeved on the outer surface of the second connecting rod 2333; the second spring 2334 is disposed between the clamping body 233 (middle clamping plate 2332) and the base 100. This structure, through the guiding effect of the second connecting rod 2333 and the limiting and automatic recovery effect of the second spring 2334, can achieve smooth and stable movement of the clamping body 233.

[0045] Specifically, in some implementations, such as Figure 1 As shown, the battery cell welding fixture also includes a fixing base 300; the fixing base 300 is detachably connected to the bottom of the base 100; and the traction component 220 is disposed between the fixing base 300 and the base 100. This structure, through the clamping and positioning action between the fixing base 300 and the base 100, ensures the installation stability of the traction component 220 and the stability and flexibility of the clamping adjustment. For example, Figure 1 As shown, the fixing base 300 is provided with at least one fixing hole 301; a positioning pin 310 is connected inside the fixing hole 301; one end of the positioning pin 310 is detachably connected to the bottom of the base 100 (by thread). Further, the bottom of the fixing base 300 is provided with at least one track groove; the track groove is used to assemble the track on the welding machine.

[0046] Working principle: When it is necessary to clamp the battery cell structure, push the pressing block 211 downward so that the first contact slope 213 of the first movable block 212 moves downward along the second contact slope 2211 of the traction plate 221, thereby causing the first elastic element 222 on the other end of the traction plate 221 to press and move towards the inner wall of the limiting groove 104; at the same time, it causes the position of the limiting recess 223 on the traction plate 221 to move; as the position of the limiting recess 223 moves, the connecting plate 232 moves towards the bottom of the mounting groove 102; therefore, the traction clamping body 233 moves away from the placement groove 102; then the battery cell structure is placed inside the placement groove 101; finally, release the pressing block 211, and the elastic recovery performance of the second spring 2334 and the first elastic element 222 is used to realize the restoration of the pushing component 210 and the traction component 220 to their original state; at the same time, the clamping body 233 abuts against and clamps the side end face of the battery cell structure.

[0047] This utility model also proposes a welding machine, which includes a battery cell welding fixture. The specific structure of the battery cell welding fixture is as described in the above embodiments. Since this welding machine adopts all the technical solutions of all the above embodiments, it has at least all the beneficial effects brought about by the technical solutions of the above embodiments, which will not be described in detail here.

[0048] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style of the specification is merely for clarity. Those skilled in the art should regard the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

[0049] Based on the disclosure and teachings of the above specification, those skilled in the art can make changes and modifications to the above embodiments. Therefore, this utility model is not limited to the specific embodiments described above, and any obvious improvements, substitutions, or modifications made by those skilled in the art based on this utility model are within the protection scope of this utility model. Furthermore, although some specific terms are used in this specification, these terms are only for convenience of explanation and do not constitute any limitation on this utility model.

Claims

1. A battery cell welding fixture, characterized in that: include: The base has a placement groove; the base also has mounting holes and mounting slots; the mounting slots communicate with the placement grooves. The device includes a clamping mechanism; the clamping mechanism comprises a pushing component, a traction component, and a clamping component; the pushing component is disposed within the mounting hole; one end of the pushing component passes through the bottom of the mounting hole and is connected to one end of the traction component; the traction component is disposed at the bottom of the base; the other end of the traction component is connected to the clamping component; the clamping component is disposed in the placement groove; and the clamping component is capable of moving toward or away from the placement groove.

2. The cell welding fixture according to claim 1, characterized in that: The base has a limiting groove at its bottom; the limiting groove communicates with the mounting hole; the limiting groove communicates with the mounting groove; and the bottom of the pushing component extends into the limiting groove; the traction component is movably connected to the inside of the limiting groove; the bottom of the clamping component extends into the limiting groove.

3. The cell welding fixture according to claim 1 or 2, characterized in that: The bottom of the pushing component is provided with a first contact slope; the end of the traction component facing the pushing component is provided with a second contact slope corresponding to the first contact slope; the other end of the traction component is elastically connected to the bottom of the base; the other end of the clamping component is elastically connected to the mounting groove.

4. The cell welding fixture according to claim 3, characterized in that: The traction component includes a traction plate and a first elastic element; the second contact slope is disposed at one end of the traction plate facing the pushing component; the other end of the traction plate away from the pushing component is connected to one end of the first elastic element; the other end of the first elastic element is connected to the base; the bottom of the clamping component is movably connected to the side surface of the traction plate.

5. The cell welding fixture according to claim 4, characterized in that: The first elastic element includes a first spring and a first connecting rod; one end of the first connecting rod is connected to the traction plate; the other end of the first connecting rod is movably connected to the base; one end of the first spring is connected to the other end of the first connecting rod. The other end of the first spring abuts against the base; and the first spring is sleeved on the first connecting rod.

6. The cell welding fixture according to claim 3, characterized in that: The clamping component includes an abutment component connecting plate and a clamping body; the top of the clamping body is elastically connected to the mounting groove; the bottom of the clamping body passes through the bottom of the mounting groove and is connected to one end of the connecting plate; the other end of the connecting plate is connected to one end of the abutment component; the other end of the abutment component abuts against the limiting recess of the traction component. Furthermore, the depth of the middle part of the limiting recess is greater than the depth of the two sides.

7. The cell welding fixture according to claim 6, characterized in that: The abutting component includes an outer support ring, a rotating ball, and an inner support wheel; the inner support wheel is connected to one end of the connecting plate; the rotating ball is disposed between the outer support ring and the inner support wheel; and the outer support ring is movably connected to the interior of the limiting recess.

8. The cell welding fixture according to claim 6, characterized in that: A second connecting rod is provided on the side surface of the clamping body away from the placement groove; one end of the second connecting rod passes through the base; and a second spring is sleeved on the outer surface of the second connecting rod; the second spring is disposed between the clamping body and the base.

9. The cell welding fixture according to claim 1, characterized in that: The cell welding fixture also includes a fixing base; the fixing base is detachably connected to the bottom of the base; and the traction component is disposed between the fixing base and the base.

10. A welding machine, characterized in that: Includes the cell welding fixture described in any one of claims 1 to 9.

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