Battery welding clamp

Abstract

The utility model relates to a battery welding fixture. The battery welding fixture comprises a base (1); the lower clamping plate (2) is fixed on the base (1); the upper clamping plate (3) is arranged above the lower clamping plate (2) at an interval and is connected to the base (1) in a manner of moving up and down; and the abutting structure (4) comprises an abutting piece (41), and the abutting piece (41) is movably arranged on the base (1) and is arranged to be used for selectively abutting against the outer end face (1011) of a cover plate (101) of the battery (10). The battery welding clamp can tightly press the cover plate, and welding of the cover plate and the shell is facilitated.

Description

Technical Field

[0001] The present disclosure relates to the technical field of clamps, and in particular, to a battery welding clamp. Background Art

[0002] In the related art, a battery generally includes a shell, a cover plate, and a tab, among which the tab is connected to the cover plate. During actual assembly, the cover plate needs to be bent and then welded to the shell. However, after the cover plate is bent, the tab will also bend, and the cover plate will tend to push outward. Therefore, if the cover plate is not pressed tightly, the welding between the cover plate and the shell will be affected. Utility Model Content

[0003] The purpose of the present disclosure is to provide a battery welding fixture, which can press the cover plate to facilitate welding of the cover plate and the shell.

[0004] In order to achieve the above object, the present disclosure provides a battery welding fixture, comprising:

[0005] Base;

[0006] A lower clamping plate fixed to the base;

[0007] An upper clamping plate is disposed above the lower clamping plate at intervals and is connected to the base movably up and down; and

[0008] The pressing structure comprises a pressing piece, which is movably arranged on the base and is configured to selectively press against the outer end surface of the cover plate of the battery.

[0009] Optionally, the lower clamping plate has a receiving groove for accommodating the battery, and the receiving groove also has a transversely arranged opening, and the opening is used for the battery to extend into or exit the receiving groove.

[0010] The pressing member has a first position and a second position which are switchable with each other. In the first position, the pressing member is away from the opening; in the second position, the pressing member is close to the opening so as to press against the outer end surface.

[0011] Optionally, the pressing structure includes a pressing claw, which is rotatably connected to the base around a pivot axis extending in the up-down direction. The pressing member is connected to the pressing claw, and the pressing claw can drive the pressing member to rotate so that the pressing member can switch between the first position and the second position.

[0012] Optionally, a first elastic member is connected between the pressing claw and the base, and in the second position, the first elastic member provides a pre-tightening force for the pressing member to press against the outer end surface.

[0013] Optionally, in the first position, the pressing claw abuts against a limiting surface of the base, the limiting surface restricts the pressing claw from rotating in a direction close to the opening, and the first elastic member is pulled and stores elastic potential energy that switches the pressing member to the second position.

[0014] Optionally, the pressing structure includes two pressing members, which are spaced apart in the longitudinal direction, and each of the pressing members is connected to one of the pressing claws.

[0015] Optionally, the pressing member is configured as a pressing column, and in the second position, the pressing column extends in the transverse direction and is used to fit against the outer end surface.

[0016] Optionally, a second elastic member is connected between the upper clamping plate and the lower clamping plate, the upper clamping plate has a clamping position, at which the upper clamping plate and the lower clamping plate are used to clamp the battery together, and the second elastic member provides a pre-tightening force for the upper clamping plate to press against the battery.

[0017] Optionally, at least one of the two lateral sides of the lower clamping plate is provided with a positioning block, and the positioning block is used to press against the battery.

[0018] Optionally, a third elastic member is provided between the positioning block and the lower clamping plate, and the third elastic member is arranged in the transverse direction.

[0019] Through the above technical scheme, when the battery welding fixture provided by the present invention is used, the upper clamping plate can be moved upward first, and then the battery can be inserted between the upper clamping plate and the lower clamping plate, and then the upper clamping plate can be moved downward so that the upper clamping plate and the lower clamping plate can clamp the battery together, that is, the battery can be clamped. Since the pressing piece is movably arranged on the base, when the cover plate is not bent, the pressing piece can be moved away from the cover plate first, and when the cover plate is bent, the pressing piece can be moved to press against the outer end surface of the cover plate, thereby pressing the cover plate, thereby facilitating the welding of the cover plate and the shell, and preventing the pole ear from pushing the cover plate outward. In addition, when the battery welding fixture is transferred, the pressing piece can also be pressed against the above-mentioned outer end surface, so that it can be ensured that the cover plate is kept in a compressed state when the battery welding fixture is transferred.

[0020] Other features and advantages of the present disclosure will be described in detail in the following detailed description. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] The accompanying drawings are used to provide a further understanding of the present disclosure and constitute a part of the specification. Together with the following specific embodiments, they are used to explain the present disclosure but do not constitute a limitation of the present disclosure. In the accompanying drawings:

[0022] Figure 1 is an exploded schematic diagram of a battery welding fixture provided according to an embodiment of the present disclosure;

[0023] Figure 2 is a schematic diagram of the three-dimensional structure of a battery welding fixture provided in accordance with an embodiment of the present disclosure from a first viewing angle;

[0024] Figure 3 is a schematic diagram of the three-dimensional structure of the battery welding fixture provided by an embodiment of the present disclosure under a second viewing angle;

[0025] Figure 4 is a schematic diagram of the cooperation between the battery welding fixture and the battery according to an embodiment of the present disclosure, wherein the cover plate is in an unbent state;

[0026] Figure 5 is a schematic diagram of the cooperation between the battery welding fixture and the battery according to an embodiment of the present disclosure, wherein the cover plate is in a bent state;

[0027] Figure 6 It is a bottom view schematic diagram of a battery welding fixture provided according to an embodiment of the present disclosure.

[0028] Description of Reference Numerals

[0029] 1-base, 11-limiting surface, 12-linear bearing, 13-positioning plate, 131-V-shaped positioning groove, 14-transfer plate, 2-lower clamping plate, 21-accommodating groove, 22-opening, 23-positioning hole, 3-upper clamping plate, 31-open clamping column, 4-pressing structure, 41-pressing member, 42-pressing claw, 43-first elastic member, 5-positioning block, 10-battery, 101-cover plate, 1011-outer end surface, 102-ear, 103-shell. DETAILED DESCRIPTION

[0030] The specific implementation of the present disclosure is described in detail below in conjunction with the accompanying drawings. It should be understood that the specific implementation described herein is only used to illustrate and explain the present disclosure, and is not used to limit the present disclosure.

[0031] In the present disclosure, unless otherwise stated, directional words such as "horizontal, vertical, up and down" are used based on Figure 1 The XYZ coordinate system is defined in the figure. Specifically, the X direction refers to the horizontal direction, the Y direction refers to the longitudinal direction, the Z direction refers to the up and down direction, and the side indicated by the arrow is up, and the opposite is down. In addition, the up and down directions also correspond to the gravity direction of the battery welding fixture. "Inside and outside" refers to the inside and outside of the contours of each component itself. The terms "first" and "second" are used to distinguish one element from another, and do not have order and importance. In addition, when the following description refers to the drawings, the same figure numbers in different drawings represent the same or similar elements, and the present disclosure will not elaborate on this.

[0032] According to an exemplary embodiment of the present disclosure, a battery welding fixture is provided, referring to Figures 1 to 5 As shown in the figure, the battery welding fixture includes: a base 1; a lower clamping plate 2, fixed to the base 1; an upper clamping plate 3, arranged above the lower clamping plate 2 at intervals and connected to the base 1 movably up and down; and a pressing structure 4, including a pressing member 41, which is movably arranged on the base 1 and is configured to selectively press on the outer end surface 1011 of the cover plate 101 of the battery 10.

[0033] Through the above technical solution, when the battery welding fixture provided by the present disclosure is used, the upper clamping plate 3 can be first moved upward, and then the battery 10 can be inserted between the upper clamping plate 3 and the lower clamping plate 2, and then the upper clamping plate 3 can be moved downward, so that the upper clamping plate 3 and the lower clamping plate 2 can clamp the battery 10 together, that is, the battery 10 can be clamped. Since the pressing member 41 is movably arranged on the base 1, when the cover plate 101 is not bent, the pressing member 41 can be first moved away from the cover plate 101, and when the cover plate 101 is bent, the pressing member 41 can be moved to press against the outer end surface 1011 of the cover plate 101, thereby pressing the cover plate 101, thereby facilitating the welding of the cover plate 101 and the shell 103, and preventing the pole ear 102 from pushing the cover plate 101 outward. In addition, when the battery welding fixture is transferred, the pressing member 41 can also be pressed against the outer end surface 1011, so that the cover plate 101 can be kept in a pressed state when the battery welding fixture is transferred.

[0034] It should be noted that the present disclosure does not limit the specific structure and activity mode of the pressing member 41, which will be described in detail in the following embodiments. In addition, the upper clamping plate 3 can be lifted and lowered by an external device. For example, the external device may include a lifting cylinder, which can be connected to the upper clamping plate 3 to drive the upper clamping plate 3 to lift and lower, and the lifting cylinder can also be separated from the upper clamping plate 3 to facilitate the transfer of the battery welding fixture. Here, reference Figures 1 to 5 As shown in , the upper clamping plate 3 may have an opening clamping column 31, and the opening clamping column 31 is used to cooperate with the lifting cylinder of the external device. In addition, when the cover plate 101 is welded to the shell 103, the four sides of the cover plate 101 are respectively welded to the shell 103, wherein the four sides of the cover plate 101 can be understood as the four side surfaces of the cover plate 101.

[0035] In the exemplary embodiment of the present disclosure, referring to Figures 1 to 5 As shown in , a linear bearing 12 is provided on the base 1, and the upper clamping plate 3 can be slidably connected to the linear bearing 12. In this way, the linear bearing 12 can also provide guidance for the lifting of the upper clamping plate 3.

[0036] In the exemplary embodiment of the present disclosure, referring to Figures 1 to 5As shown in , the lower clamping plate 2 has a receiving groove 21 for accommodating the battery 10, and the receiving groove 21 also has a transversely arranged opening 22, and the opening 22 is used for the battery 10 to extend into or exit the receiving groove 21, and the pressing member 41 has a first position and a second position that can be switched with each other. In the first position, the pressing member 41 is away from the opening 22; in the second position, the pressing member 41 is close to the opening 22, so as to press against the outer end surface 1011. In this way, when clamping the battery 10, the pressing member 41 can be placed in the first position to avoid interference with the battery 10 when the pressing member 41 is close to the opening 22. After that, the battery 10 is inserted into the receiving groove 21 through the opening 22, and at this time, the cover plate 101 can be arranged outside the opening 22 so that the cover plate 101 can be bent, and then the cover plate 101 can be bent. After the cover plate 101 is bent, the pressing member 41 can be placed in the second position to press the cover plate 101, and then the welding process of the cover plate 101 and the shell 103 can be carried out. Therefore, the battery welding fixture disclosed in the present invention can be compatible with the bending station of the cover plate 101 of the battery 10 and the welding station of the cover plate 101 and the shell 103, thereby improving its adaptability and reducing the production cost of the battery 10.

[0037] In some embodiments of the present disclosure, reference Figures 1 to 5 As shown in , the pressing structure 4 includes a pressing claw 42, which is rotatably connected to the base 1 around a pivot axis extending in the up-down direction, and a pressing member 41 is connected to the pressing claw 42, and the pressing claw 42 can drive the pressing member 41 to rotate, so that the pressing member 41 can switch between the first position and the second position. In this way, the pressing member 41 can realize the switching between the first position and the second position by rotating, and the structure is simple and easy to operate, and it is easy to realize that the pressing member 41 is close to the opening 22 or away from the opening 22. In addition, the pressing member 41 is driven to rotate by the pressing claw 42, which can ensure the stability of the pressing member 41 when rotating. Of course, in other embodiments, the pressing claw 42 can also be movably arranged on the base 1 in the longitudinal direction, so that the pressing member 41 can switch between the first position and the second position, and the pressing member 41 can realize the switching between the first position and the second position by moving.

[0038] It should be noted that the pressing claw 42 of the present disclosure can realize its own rotation through an external device. For example, the external device may include a telescopic cylinder. After the fixture moves to the bending station of the cover plate 101, after the bending of the cover plate 101 is completed, the telescopic cylinder can push the pressing claw 42 to rotate, so that the pressing member 41 approaches and presses the cover plate 101, even if the pressing member 41 is switched to the second position. Correspondingly, after the welding of the cover plate 101 and the shell 103 is completed, the telescopic cylinder can pull the pressing claw 42 to rotate, so that the pressing member 41 is away from the cover plate 101, even if the pressing member 41 is switched to the first position. Here, the pressing claw 42 can be constructed as a cam follower, which is not limited by the present disclosure. Of course, in other embodiments, the battery welding fixture may also include a motor, which is connected to the pressing claw 42 to drive the pressing claw 42 to rotate, thereby, the switching of the pressing member 41 between the first position and the second position can also be realized.

[0039] In some embodiments of the present disclosure, reference Figures 1 to 5 As shown in , a first elastic member 43 may be connected between the pressing claw 42 and the base 1. In the second position, the first elastic member 43 provides a pre-tightening force for the pressing member 41 to press against the outer end surface 1011. Figure 4 and Figure 5 As shown in , after the bending of the cover plate 101 is completed, the telescopic cylinder of the external device can push the pressing claw 42 to rotate, so that the pressing member 41 switches to the second position. At this time, the first elastic member 43 also stores elastic potential energy. Using this elastic potential energy, the first elastic member 43 can pull the pressing member 41 toward the cover plate 101, that is, provide the pressing member 41 with a pre-tightening force against the outer end surface 1011, so that the pressing member 41 presses the cover plate 101. Thus, with the help of the first elastic member 43, when the battery welding fixture is transferred, the pressing of the cover plate 101 can be achieved without the help of external force. When the welding of the cover plate 101 and the shell 103 is completed, the telescopic cylinder of the external device can pull the pressing claw 42 to rotate, so that the pressing member 41 switches to the first position. At this time, the first elastic member 43 is stretched. Here, according to some embodiments, the first elastic member 43 can be constructed as a tension spring, which is not limited by the present disclosure.

[0040] Optionally, refer to Figure 4 and Figure 5As shown in , in the first position, the pressing claw 42 abuts against the limiting surface 11 of the base 1, and the limiting surface 11 limits the pressing claw 42 from rotating in the direction close to the opening 22, and the first elastic member 43 is pulled and stores the elastic potential energy that switches the pressing member 41 to the second position. In this way, the limiting surface 11 can be used to ensure that the pressing member 41 is kept in the first position when the first elastic member 43 is pulled. And the elastic potential energy stored in the first elastic member 43 can also facilitate the switching of the pressing member 41 to the second position. Specifically, when the pressing member 41 needs to be switched to the second position, the telescopic cylinder of the external device only needs to slightly push the pressing claw 42 so that the pressing claw 42 passes over the limiting surface 11. In this way, the elastic potential energy stored in the first elastic member 43 can be used to pull the pressing member 41 to switch to the first position.

[0041] In some embodiments of the present disclosure, reference Figures 1 to 5 As shown in , the pressing structure 4 may include two pressing members 41, which are spaced apart in the longitudinal direction, and each pressing member 41 is connected to a pressing claw 42. In this way, the pressing effect of the cover plate 101 can be improved by using the two pressing members 41. Accordingly, a first elastic member 43 is connected between each pressing claw 42 and the base 1.

[0042] In some embodiments of the present disclosure, reference Figures 1 to 5 As shown in , the pressing member 41 can be configured as a pressing column. In the second position, the pressing column extends in the transverse direction and is used to fit on the outer end surface 1011. In this way, by fitting the pressing column with the outer end surface 1011, the contact area between the pressing column and the cover plate 101 can be increased, and the stability of the cover plate 101 when being pressed can be improved.

[0043] In the exemplary embodiment of the present disclosure, referring to Figures 1 to 5 As shown in the figure, a second elastic member (not shown in the figure) is connected between the upper clamping plate 3 and the lower clamping plate 2, and the upper clamping plate 3 has a clamping position. In the clamping position, the upper clamping plate 3 and the lower clamping plate 2 are used to clamp the battery 10 together, and the second elastic member provides the upper clamping plate 3 with a pre-tightening force to press against the battery 10. In this way, the upper clamping plate 3 and the lower clamping plate 2 can be used to elastically clamp the battery 10. Here, the second elastic member can be configured as a compression spring, which is not limited in the present disclosure.

[0044] In the exemplary embodiment of the present disclosure, referring to Figure 1 As shown in FIG, at least one of the two lateral sides of the lower clamping plate 2 may be provided with a positioning block 5, and the positioning block 5 is used to press against the battery 10. In this way, the positioning block 5 can be used to provide lateral positioning for the battery 10.

[0045] In some embodiments of the present disclosure, a third elastic member may be provided between the positioning block 5 and the lower clamping plate 2, and the third elastic member is arranged in the transverse direction. Here, a positioning block 5 may be provided on one of the two transverse sides of the lower clamping plate 2, and when the battery 10 is placed on the lower clamping plate 2, the positioning block 5 may be pressed against the battery 10 by the third elastic member, and the battery 10 may be pushed to the other transverse side of the lower clamping plate 2, thereby achieving transverse positioning of the battery 10. Here, the third elastic member may be configured as a compression spring, which is not limited by the present disclosure.

[0046] In the exemplary embodiment of the present disclosure, referring to Figure 6 As shown in , a positioning hole 23 may be opened on the lower clamping plate 2, and the positioning hole 23 is used to cooperate with a positioning column of an external device to facilitate the positioning of the battery welding fixture itself.

[0047] In the exemplary embodiment of the present disclosure, referring to Figures 1 to 5 As shown in , at least one of the two lateral sides of the base 1 is provided with a positioning plate 13, and the positioning plate 13 has a V-shaped positioning groove 131, and the notch of the V-shaped positioning groove 131 is arranged in the lateral direction. Here, the V-shaped positioning groove 131 cooperates with the positioning structure of the external device to achieve the lateral positioning of the battery welding fixture.

[0048] In the exemplary embodiment of the present disclosure, referring to Figures 1 to 5 As shown in FIG, transfer plates 14 are provided on both lateral sides of the base 1. The transfer plates 14 are constructed as wedge-shaped structures to facilitate clamping by a transport mechanism of an external device, thereby facilitating the transfer of the battery welding fixture.

[0049] Next, the present disclosure will provide a detailed introduction to the specific use process of the battery welding fixture in combination with the above specific implementation methods. Figures 2 to 5As shown in, first, at the loading and positioning station, the pressing member 41 is in the first position, and the pressing claw 42 cooperates with the limiting surface 11. Then, the battery welding fixture is transferred to the bending station of the cover plate 101 through the conveying mechanism, and the lifting cylinder lifts the clamping column 31 to drive the upper clamping plate 3 to rise, and the battery welding fixture is opened. After the battery 10 is pushed into the receiving groove 21 of the lower clamping plate 2, the positioning block 5 pushes the battery 10 to the other side of the lower clamping plate 2 for positioning. Then, the lifting cylinder descends, and the upper clamping plate 3 is moved under the action of the second elastic member. The battery 10 is pressed down; then, the cover plate 101 is bent at the bending station of the cover plate 101. After the bending of the cover plate 101 is completed, the pressing claw 42 is pushed to rotate by the telescopic cylinder so that the pressing claw 42 passes over the limiting surface 11. Then, the pressing claw 42 automatically rotates in the direction close to the battery 10 under the action of the first elastic member 43 until the pressing member 41 presses against the outer end surface 1011 of the cover plate 101, that is, it switches to the second position to press the cover plate 101 to ensure that the cover plate 101 will not rebound after being buckled into the shell 103. After that, the battery welding fixture is transferred to the welding station of the cover plate 101 and the shell 103 by the conveying mechanism, and the V-shaped positioning groove 131 of the positioning plate 13 is matched with the positioning structure of the external device to complete the positioning of the battery welding fixture. Then, the pressing block of the external device is used to replace the pressing member 41 to press the cover plate 101, and the pressing claw 42 is pulled by the telescopic cylinder to switch the pressing member 41 to the first position. Subsequently, the battery welding fixture is rotated in cooperation with the rotating mechanism to complete the one-time welding of the four sides of the cover plate 101. Afterwards, the battery welding fixture is transferred to the short-circuit test station by the conveying mechanism to complete the short-circuit test of the battery 10. Finally, the battery welding fixture is transferred back to the loading and positioning station by the conveying mechanism. As a result, the battery welding fixture disclosed in the present invention can be compatible with the loading and positioning station, the bending station of the cover plate 101, the welding station of the cover plate 101 and the shell 103, and the short-circuit test station, thereby effectively reducing the production cost of the battery 10. In addition, by rotating the battery welding fixture through the rotating mechanism, the present invention can realize the welding of the four sides of the cover plate 101 when the battery 10 is clamped once, that is, there is no need to clamp the battery 10 four times, which effectively improves the production efficiency of the battery 10.

[0050] The preferred embodiments of the present disclosure are described in detail above in conjunction with the accompanying drawings; however, the present disclosure is not limited to the specific details in the above embodiments. Within the technical concept of the present disclosure, a variety of simple modifications can be made to the technical solution of the present disclosure, and these simple modifications all fall within the protection scope of the present disclosure.

[0051] It should also be noted that the various specific technical features described in the above specific embodiments can be combined in any suitable manner without contradiction. In order to avoid unnecessary repetition, the present disclosure will not further describe various possible combinations.

[0052] In addition, various embodiments of the present disclosure may be arbitrarily combined, and as long as they do not violate the concept of the present disclosure, they should also be regarded as the contents disclosed by the present disclosure.

Claims

1. A battery welding fixture, characterized in that: include: Base; A lower clamping plate fixed to the base; An upper clamping plate is arranged above the lower clamping plate at intervals and connected to the base so as to be movable up and down; as well as The pressing structure comprises a pressing piece, which is movably arranged on the base and is configured to selectively press against the outer end surface of the cover plate of the battery.

2. The battery welding fixture according to claim 1, characterized in that: The lower clamping plate has a receiving groove for accommodating the battery, and the receiving groove also has a transversely arranged opening, and the opening is used for the battery to extend into or exit the receiving groove. The pressing member has a first position and a second position which are switchable with each other. In the first position, the pressing member is away from the opening; in the second position, the pressing member is close to the opening so as to press against the outer end surface.

3. The battery welding fixture according to claim 2, characterized in that: The pressing structure includes a pressing claw, which is rotatably connected to the base around a pivot axis extending in the up-down direction. The pressing member is connected to the pressing claw, and the pressing claw can drive the pressing member to rotate so that the pressing member can switch between the first position and the second position.

4. The battery welding fixture according to claim 3, characterized in that: A first elastic member is connected between the pressing claw and the base. In the second position, the first elastic member provides a pre-tightening force for the pressing member to press against the outer end surface.

5. The battery welding fixture according to claim 4, characterized in that: In the first position, the pressing claw abuts against the limiting surface of the base, and the limiting surface restricts the pressing claw from rotating in the direction close to the opening. The first elastic member is pulled and stores elastic potential energy that switches the pressing member to the second position.

6. The battery welding fixture according to claim 4, characterized in that: The pressing structure comprises two pressing pieces, which are arranged at intervals in the longitudinal direction, and each of the pressing pieces is connected to one of the pressing claws.

7. The battery welding fixture according to claim 2, characterized in that: The pressing member is configured as a pressing column. In the second position, the pressing column extends in a transverse direction and is used to fit against the outer end surface.

8. The battery welding fixture according to claim 1, characterized in that: A second elastic member is connected between the upper clamping plate and the lower clamping plate. The upper clamping plate has a clamping position. At the clamping position, the upper clamping plate and the lower clamping plate are used to clamp the battery together. The second elastic member provides a pre-tightening force for the upper clamping plate to press against the battery.

9. The battery welding fixture according to claim 1, characterized in that: At least one of the two lateral sides of the lower clamping plate is provided with a positioning block, and the positioning block is used to press against the battery.

10. The battery welding fixture according to claim 9, characterized in that: A third elastic member is provided between the positioning block and the lower clamping plate, and the third elastic member is arranged in a transverse direction.

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