Battery welding device

Abstract

A battery welding device is suitable for welding a battery, the battery comprises a shell and a cover plate, the cover plate is arranged at the end of the shell, the battery welding device comprises a clamp assembly and a welding assembly, the clamp assembly is suitable for clamping the shell and the cover plate and driving the battery to rotate around a first axis, and the extending direction of the first axis is a first direction; the first direction is the length direction of the battery; the welding assembly is suitable for moving in the second direction and / or the third direction and welding the cover plate and the shell, and every two of the first direction, the second direction and the third direction intersect. The battery welding device is short in technological process.

Description

Technical Field

[0001] The utility model relates to the technical field of batteries, and particularly relates to a battery welding device. Background Art

[0002] The housing and cover plate of a battery need to be fixed by welding. Currently, a welding device is usually used for welding the housing and the cover plate. For welding different parts, operations need to be carried out at multiple workstations, and the process flow is long. Summary of the Utility Model

[0003] The purpose of the utility model is to provide a battery welding device to solve the problem of the long process flow of the existing battery welding device.

[0004] To achieve the purpose of the utility model, the following technical solutions are provided:

[0005] The utility model provides a battery welding device suitable for welding a battery. The battery includes a housing and a cover plate, and the cover plate is arranged at the end of the housing. The battery welding device includes:

[0006] A fixture assembly suitable for clamping the housing and the cover plate and driving the battery to rotate around a first axis, and the extending direction of the first axis is a first direction;

[0007] A welding assembly suitable for moving in a second direction and / or a third direction and welding the cover plate and the housing, and the first direction, the second direction and the third direction intersect pairwise.

[0008] In an implementation manner, the first direction is the length direction of the battery. The fixture assembly includes a first fixture and a second fixture oppositely arranged in the first direction. The first fixture is suitable for clamping one end of the battery in the first direction, and the second fixture is suitable for clamping the other end of the battery in the first direction.

[0009] In an implementation manner, the fixture assembly further includes a first driving mechanism suitable for driving the first fixture and / or the second fixture to rotate synchronously around the first direction.

[0010] In an implementation manner, the first fixture and the second fixture are further suitable for moving relatively in the first direction.

[0011] In an implementation manner, the first fixture includes a second driving member and a first clamping member. The first clamping member encloses a receiving groove suitable for receiving the end of the battery, and the second driving member is suitable for driving the first clamping member to move so that the first clamping member clamps the housing and the cover plate.

[0012] In one embodiment, the first clamping member includes a first clamping block and a first positioning block which are oppositely arranged, and the second driving member drives the first clamping block to move relative to the first positioning block so that the first clamping block and the first positioning block clamp the housing and the cover plate.

[0013] In one embodiment, the first clamping member further includes a second clamping block and a second positioning block which are oppositely arranged, and the second driving member drives the second clamping block to move relative to the second positioning block so that the first clamping block, the first positioning block, the second clamping block and the second positioning block enclose to form the receiving groove.

[0014] In one embodiment, the first clamping member further includes a first cover plate positioning block which is disposed between the first clamping block and the first positioning block, and the first cover plate positioning block is adapted to press the cover plate in the first direction.

[0015] In one embodiment, a welding hole is formed in the first clamping member, and the welding assembly welds the cover plate and the housing at the opening through the welding hole.

[0016] In one embodiment, the welding assembly includes a first welding member and a second welding member which are oppositely arranged in the first direction, and the first welding member and the second welding member are adapted to move in the second direction and / or the third direction and weld the cover plate and the housing.

[0017] In one embodiment, the battery welding device further includes a dust suction assembly which is correspondingly arranged with the welding assembly, and the dust suction assembly is adapted to remove the fumes generated during welding.

[0018] By providing a fixture assembly and a welding assembly, the battery welding device of the present utility model can drive the battery to rotate in the first direction, and the welding assembly can move in the second direction, so that the welding assembly can complete the welding of the cover plate and the housing in the second direction. When the welding assembly can move in the third direction, the welding assembly can avoid the height difference generated when the battery rotates, and at the same time, adjust the distance between the welding assembly and the battery in the third direction after the battery rotation is completed, so that the welding assembly can continue to complete the welding of the corresponding side of the battery, without replacing the battery to the next station. Therefore, the battery welding device of the present utility model can complete the welding of the cover plate and the housing of the battery at one station, has a short process flow, and has a good consistency effect of the weld seam after welding. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] To more clearly illustrate the technical solutions in the embodiments of the present utility model or the prior art, the following will briefly introduce the drawings required for the description of the embodiments or the prior art. Obviously, the drawings in the following description are only some embodiments of the present utility model. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0020] Figure 1 is a perspective view of a battery welding device of an embodiment;

[0021] Figure 2 is a partial perspective view of a battery welding device of an embodiment;

[0022] Figure 3 is a partial perspective view of a battery welding device of another embodiment;

[0023] Figure 4 is a perspective view of a first clamping member of an embodiment;

[0024] Figure 5 is a partial perspective view of a battery welding device in a state of an embodiment;

[0025] Figure 6 is a partial perspective view of a battery welding device in another state of an embodiment.

[0026] Explanation of reference numerals:

[0027] 100 - battery welding device, 10 - battery, 11 - housing, 20 - fixture assembly, 21 - first fixture, 211 - first clamping member, 2111 - first clamping block, 2112 - first positioning block, 2113 - second clamping block, 2114 - second positioning block, 2115 - first cover plate positioning block, 2116 - welding hole, 2117 - groove, 22 - second fixture, 23 - first driving mechanism, 30 - welding assembly, 31 - first welding member, 32 - second welding member, 33 - first moving module, 34 - second moving module, 50 - dust suction assembly, 51 - dust suction hood. Detailed implementation manners

[0028] For the embodiments in the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts fall within the protection scope of the present utility model.

[0029] It should be noted that when a component is referred to as being "fixed to" another component, it can be directly on the other component or there can also be an intermediate component. When a component is considered to be "connected" to another component, it can be directly connected to the other component or there may be an intermediate component at the same time.

[0030] Unless otherwise defined, all technical and scientific terms used in this utility model have the same meaning as commonly understood by those skilled in the technical field to which this utility model belongs. The terms used in this utility model in the specification are only for the purpose of describing specific embodiments and are not intended to limit this utility model. The term "and / or" used in this utility model includes any and all combinations of one or more of the related listed items.

[0031] The following will describe in detail some embodiments of this utility model in conjunction with the accompanying drawings. Without conflict, the following embodiments and the features in the embodiments can be combined with each other.

[0032] Reference can be made to Figure 1 、 Figure 2 and Figure 3 to provide a battery welding device 100 suitable for welding a battery 10. The battery 10 includes a housing 11 and a cover plate. The cover plate is arranged at the end of the housing 11. The battery welding device 100 includes a fixture assembly 20 and a welding assembly 30. The fixture assembly 20 is suitable for clamping the housing 11 and the cover plate and driving the battery 10 to rotate around a first axis, and the extending direction of the first axis is the first direction X. The welding assembly 30 is suitable for moving in the second direction Y and / or the third direction Z and welding the cover plate and the housing 11 at the opening. The first direction, the second direction Y, and the third direction Z intersect pairwise.

[0033] Optionally, the first axis is the axis of the rotational movement of the battery 10, and the first axis can be parallel to the length direction of the battery 10.

[0034] Optionally, the battery 10 further includes an electric core, and the electric core is received in the housing 11. The housing 11 has an opening, and the cover plate is arranged at the opening. The housing 11 can be formed by sequentially connecting a plurality of side plates, or can be formed by enclosing a single side plate. The housing 11 can be an integral structure, that is, the bottom plate and the side plates are an integral structure made by an integral forming process. The integral forming process can specifically be stamping, casting, etc., without limitation. The housing 11 can also be a split structure, and the plurality of side plates can be connected and fixed by welding, bonding, clamping, screwing, etc.

[0035] The housing 11 and the cover plate are made of materials with relatively high structural strength, specifically can be metal materials, high-strength plastics, ceramics, etc. Metal materials such as aluminum, aluminum alloy, magnesium alloy, iron and iron alloy, etc. The wall thickness at each part of the housing 11 can be substantially uniform, and the thickness of the cover plate and the housing 11 can also be substantially the same. The opening is located at both ends of the housing 11 in the first direction X. The cover plate can be two, that is, the first cover plate and the second cover plate, and the first cover plate and the second cover plate are correspondingly arranged at the opening of the battery 10 in the first direction X.

[0036] The battery 10 can be a square battery 10, a blade battery 10, a cylindrical battery 10, an elliptical cylindrical battery 10, etc., without limitation.

[0037] Optionally, the battery welding device 100 further includes a transmission component, which is adapted to convey the battery 10 in the second direction Y to the welding component 30 and convey the battery 10 to the next process after the welding of the battery 10 is completed.

[0038] The battery welding device 100 of the present utility model is provided with a fixture component 20 and a welding component 30. The fixture component 20 drives the battery 10 to rotate around the first direction X, and the welding component 30 is movable in the second direction Y, so that the welding component 30 can complete the welding of the cover plate and the housing 11 in the second direction Y. When the welding component 30 is movable in the third direction Z, the welding component 30 can avoid the height difference generated when the battery 10 rotates. At the same time, after the rotation of the battery 10 is completed, the distance between the welding component 30 and the battery 10 is adjusted in the third direction Z, so that the welding component 30 can continue to complete the welding of the corresponding side of the battery 10 without replacing the battery 10 to the next working station. Therefore, the battery welding device 100 of the present utility model can complete the welding of the cover plate and the housing 11 of the battery 10 at one working station, with a short process flow and good consistency effect of the weld seams after welding.

[0039] For reference Figure 2 and Figure 3 In one embodiment, the first direction X is the length direction of the battery 10. The fixture component 20 includes a first fixture 21 and a second fixture 22 oppositely arranged in the first direction X. The first fixture 21 is adapted to clamp one end of the battery 10 in the first direction X, and the second fixture 22 is adapted to clamp the other end of the battery 10 in the first direction X.

[0040] The first fixture 21 and the second fixture 22 are provided to realize the limit of the battery 10 in the first direction X. Before rotation, the battery 10 is positioned by the first fixture 21 and the second fixture 22 so that the battery 10 is located at the welding position. At the same time, the first fixture 21 and the second fixture 22 are adapted to drive the battery 10 to move around the first axis to complete the welding of the battery 10 in the circumferential direction of the first axis.

[0041] For reference Figure 2 In one embodiment, the fixture component 20 further includes a first driving mechanism 23, which is adapted to drive the first fixture 21 and / or the second fixture 22 to rotate synchronously around the first direction X.

[0042] The first driving mechanism 23 can be a link driving mechanism, a chain driving mechanism, a gear driving mechanism, etc., without limitation.

[0043] The first driving mechanism 23, as the power source of the first fixture 21 and the second fixture 22, drives the first fixture structure and the second fixture 22 to rotate synchronously, which can ensure the consistency of rotation and avoid inconsistent rotation angles of the first fixture 21 and the second fixture 22 oppositely arranged in the first direction X with respect to the battery 10, resulting in twisting and damage of the battery 10.

[0044] In one embodiment, the first fixture 21 and the second fixture 22 are adapted to move relative to each other in the first direction X.

[0045] Before the welding operation, the first fixture 21 and the second fixture 22 approach the battery 10 in the first direction X to clamp the battery 10, facilitating subsequent rotation and welding operations. After the welding is completed, the first fixture 21 and the second fixture 22 move away from the battery 10 in the second direction Y to release the battery 10, enabling the transfer assembly to convey the battery 10 to the next station.

[0046] For reference Figure 3 In one embodiment, the first fixture 21 includes a second driving member and a first clamping member 211. The first clamping member 211 defines a receiving groove, and the receiving groove is adapted to receive an end portion of the battery 10. The second driving member is adapted to drive the first clamping member 211 to move so as to clamp the housing 11 and the cover plate.

[0047] The inner wall of the receiving groove is in close contact with the outer peripheral surface of the battery 10 to achieve the positioning of the battery 10 and prevent the battery 10 from moving around.

[0048] The second driving member is adapted to drive the first clamping member 211 to approach the battery 10 in the first direction X to clamp the battery 10, and the second driving member is also adapted to drive the first clamping member 211 to position the battery 10 in the circumferential direction of the battery 10.

[0049] For reference Figure 4 In one embodiment, the first clamping member 211 includes a first clamping block 2111 and a first positioning block 2112 which are oppositely arranged. The second driving member drives the first clamping block 2111 to move relative to the first positioning block 2112 so that the first clamping block 2111 and the first positioning block 2112 clamp the housing 11 and the cover plate.

[0050] The first clamping block 2111 and the first positioning block 2112 can be made of metal, high-strength plastic, etc. Specifically, the metal can be aluminum alloy, copper alloy, stainless steel, etc., without limitation.

[0051] The first clamping block 2111 and the first positioning block 2112 can be plate-shaped or composed of a plurality of spaced strip-shaped members, without limitation.

[0052] The first clamping block 2111 and the first positioning block 2112 are oppositely arranged, so that the opposite sides of the battery 10 will not move around during rotation or welding.

[0053] For reference Figure 4 In one implementation, the first clamping member 211 further includes a second clamping block 2113 and a second positioning block 2114 which are oppositely arranged. The second driving member drives the second clamping block 2113 to move relative to the second positioning block 2114 so that the first clamping block 2111, the first positioning block 2112, the second clamping block 2113 and the second positioning block 2114 enclose to form a receiving groove.

[0054] The second clamping block 2113 and the second positioning block 2114 can be made of metal, high-strength plastic, etc. Specifically, the metal can be aluminum alloy, copper alloy, stainless steel, etc., without limitation.

[0055] The second clamping block 2113 and the second positioning block 2114 can be plate-shaped or composed of a plurality of spaced strips, without limitation.

[0056] The first positioning block 2112 and the second positioning block 2114 can be connected or spaced apart.

[0057] The first clamping block 2111, the first positioning block 2112, the second clamping block 2113 and the second positioning block 2114 enclose to form a receiving groove. The battery 10 is received in the receiving groove, and the housing 11 of the battery 10 abuts against the first clamping block 2111, the first positioning block 2112, the second clamping block 2113 and the second positioning block 2114 in the circumferential direction, so that the battery 10 will not move during rotation or welding, improving stability and ensuring the welding effect; the cooperation of multiple components of the first clamping member 211 can ensure that the gap between the cover plate and the housing 11 remains unchanged during rotation and the rotation is more stable and reliable.

[0058] Optionally, when the battery 10 is a blade battery 10, the square battery 10 includes a first side, a second side, a third side and a fourth side connected in sequence. The first side, the second side, the third side and the fourth side are all perpendicular to the first direction X. When the lengths of the first side and the third side are not equal, the first clamping member 211 abuts against the first side, the second positioning block 2114 abuts against the third side, the second clamping block 2113 abuts against the second side, and the second positioning block 2114 abuts against the fourth side, realizing the limit of the four sides of the square battery 10, so that after the battery 10 is positioned, rotation will not cause distortion inside the battery 10; when the battery 10 is heavy, it will not move during rotation.

[0059] Optionally, when the battery 10 is a circular battery 10, the bottom wall of the receiving groove formed by enclosing the first clamping block 2111, the first positioning block 2112, the second clamping block 2113 and the second positioning block 2114 can be square or circular; when the bottom wall is square, the projection of the circular battery 10 in the first direction X is the inscribed circle of the square; when the bottom wall is circular, the projection of the circular battery 10 in the first direction X is the same as the shape of the bottom wall.

[0060] Optionally, when the battery 10 is an oval battery 10, the bottom wall of the receiving groove formed by enclosing the first clamping block 2111, the first positioning block 2112, the second clamping block 2113 and the second positioning block 2114 can be rectangular or oval; when the bottom wall is rectangular, the projection of the oval battery 10 in the first direction X is oval, and the two sides of the rectangle correspond to the major axis and minor axis of the oval; when the bottom wall is oval, the projection of the oval battery 10 in the first direction X is consistent with the shape of the bottom wall.

[0061] For reference Figure 4 In an embodiment, the first clamping member 211 further includes a first cover plate positioning block 2115. The first cover plate positioning block 2115 is disposed between the first clamping block 2111 and the first positioning block 2112, and the first cover plate positioning block 2115 is adapted to press the cover plate in the first direction X.

[0062] The first cover plate positioning block 2115 is also disposed between the second clamping block 2113 and the second positioning block 2114. The projection of the first cover plate positioning block 2115 in the first direction X can be circular, rectangular, etc., without limitation. The first cover plate positioning block 2115 can move relative to the battery 10 in the first direction X.

[0063] The first cover plate positioning block 2115 can be made of metal, high-strength plastic, etc. Specifically, the metal can be aluminum alloy, copper alloy, stainless steel, etc., without limitation.

[0064] There can be two first cover plate positioning blocks 2115, which are oppositely arranged, and a groove 2117 is formed on the first cover plate positioning block 2115, which is adapted to avoid the welding position.

[0065] The groove 2117 of the first cover plate positioning block 2115 adapted to avoid the welding position not only ensures positioning by pressing the battery 10 during welding, but also enables the solder joints to be evenly hit into the gap between the cover plate and the housing 11, ensuring the welding quality.

[0066] In an embodiment, the second clamping member is correspondingly arranged with the first clamping member 211, that is, the second clamping member includes a third clamping block and a third positioning block arranged oppositely, a fourth clamping block and a fourth positioning block arranged oppositely, and a second cover plate positioning block. The second clamping member can share the second driving member with the first clamping member 211, or a third driving member can be separately provided. The third clamping block, the third positioning block, the fourth clamping block and the fourth positioning block are adapted to limit the battery 10 at the other end in the first direction X.

[0067] For reference Figure 4 In an embodiment, a welding hole 2116 is formed on the first clamping member 211, and the welding assembly 30 welds the cover plate and the housing 11 through the welding hole 2116 at the opening.

[0068] There can be multiple welding holes 2116. Welding holes 2116 are provided on the first clamping block 2111, the first positioning block 2112, the second clamping block 2113, and the second positioning block 2114. Optionally, there can be multiple welding holes 2116 on the first clamping block 2111, and the multiple welding holes 2116 are evenly spaced, so that the welds after welding are uniform.

[0069] The welding hole 2116 is also suitable for accommodating solder. The solder can be copper, aluminum, stainless steel, graphite, silicon carbide, zirconia, etc., without limitation.

[0070] The welding assembly 30 realizes spot welding through the welding hole 2116. Adjusting the number and spacing of the welding holes 2116 can correspondingly adjust the welding effect and strength, which is beneficial to ensuring the beauty of the weld and the welding strength.

[0071] For reference Figure 1 In one embodiment, the welding assembly 30 includes a first welding member 31 and a second welding member 32 that are oppositely arranged in the first direction X. The first welding member 31 and the second welding member 32 are adapted to move in the second direction Y and / or the third direction Z to weld the cover plate and the housing 11.

[0072] The welding assembly 30 further includes a first moving module 33 and a second moving module 34. The first moving module 33 is adapted to drive the first welding member 31 to move in the second direction Y and / or the third direction Z, and the second moving module 34 is adapted to drive the second welding member 32 to move in the second direction Y and / or the third direction Z.

[0073] The first welding member 31 and the second welding member 32 can be motor - cam type, pneumatic type, hydraulic type, and composite (pneumatic - hydraulic combined type) spot welders, etc., without limitation. Optionally, the first welding member 31 and the second welding member 32 are laser welding.

[0074] Specifically, when the projection of the battery 10 in the first direction X is square or circular, the first welding member 31 and the second welding member 32 only move in the second direction Y. When the projection of the battery 10 in the first direction X is rectangular or elliptical, the first welding member 31 and the second welding member 32 need to move in the second direction Y and the third direction Z.

[0075] The first welding member 31 and the second welding member 32 move in the second direction Y to complete the welding of the housing 11 and the cover plate. The first welding member 31 and the second welding member 32 move in the third direction Z to avoid the height difference caused by the rotation of the battery 10 along the first axis. At the same time, after the battery 10 rotates, the distance between the first welding member 31 and the second welding member 32 and the battery 10 is adjusted in the third direction Z to perform the welding operation again.

[0076] For reference Figure 3, In one embodiment, the battery welding device 100 further includes a dust suction assembly 50. The dust suction assembly 50 is correspondingly arranged with the welding assembly 30, and the dust suction assembly 50 is adapted to remove the fumes generated during welding.

[0077] The dust suction assembly 50 includes a dust suction hood 51 and a dust collector. The dust collector is connected to the dust suction hood 51. There may be two dust suction hoods 51, which are correspondingly arranged with the first welding part 31 and the second welding part 32 in the third direction Z. There may be one dust collector, and one dust collector is connected to the two dust suction hoods 51. During the operation of the welding assembly 30, the dust collector operates to generate an air flow in the dust collection hood to carry away the fumes generated during the welding operation, so that the smoke, welding slag and fumes can be completely discharged into the dust collector, which is beneficial to improving the welding effect of the housing 11 and the cover plate.

[0078] Reference can be made to Figure 5 and Figure 6 , Figure 5 and Figure 6 show the changes in the positions of the first positioning block 2112 and the second clamping block 2113 during the rotation of the battery 10. Specifically, when the battery 10 is a blade battery 10, the battery 10 includes a first side, a second side, a third side and a fourth side connected in sequence. The working process of the battery welding device 100 in one embodiment of the present invention is as follows: The transmission assembly transports the battery 10 to the welding position; the first clamping member 211 and the second clamping member clamp the housing 11; the first welding part 31 and the second welding part 32 move along the second direction Y to complete the welding of the first side; the first welding part 31 and the second welding part 32 move away from the battery 10 along the third direction Z, and the first clamping member 211 and the second clamping member drive the battery 10 to rotate counterclockwise by 90°; the first welding part 31 and the second welding part 32 move close to the battery 10 along the third direction Z to the welding position, and the first welding part 31 and the second welding part 32 move along the second direction Y to complete the welding of the second side; the first welding part 31 and the second welding part 32 move away from the battery 10 along the third direction Z, and the first clamping member 211 and the second clamping member drive the battery 10 to rotate counterclockwise by 90°; the first welding part 31 and the second welding part 32 move close to the battery 10 along the third direction Z to the welding position, and the first welding part 31 and the second welding part 32 move along the second direction Y to complete the welding of the third side; the first welding part 31 and the second welding part 32 move away from the battery 10 along the third direction Z, and the first clamping member 211 and the second clamping member drive the battery 10 to rotate counterclockwise by 90°; the first welding part 31 and the second welding part 32 move close to the battery 10 along the third direction Z to the welding position, and the first welding part 31 and the second welding part 32 move along the second direction Y to complete the welding of the fourth side; the first clamping member 211 and the second clamping member move away from the battery 10 along the first direction X, so that the battery 10 returns to the transmission assembly and is transported to the next station; the first clamping member 211 and the second clamping member rotate clockwise by 360° and return to the initial position.

[0079] In the description of the embodiments of the present utility model, it should be noted that the orientation or positional relationship indicated by terms such as "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it should not be construed as a limitation to the present utility model.

[0080] The above-disclosed is only one preferred embodiment of the present utility model. Of course, it cannot be used to limit the scope of the rights of the present utility model. Those of ordinary skill in the art can understand all or part of the processes of implementing the above embodiments, and the equivalent changes made according to the claims of the present utility model still fall within the scope covered by the present utility model.

Claims

1. A battery welding device, characterized in that: Suitable for welding batteries, the battery comprising a shell and a cover plate, the cover plate being arranged at the end of the shell, the battery welding device comprising: A clamp assembly, adapted to clamp the housing and the cover and drive the battery to rotate around a first axis, wherein the extending direction of the first axis is a first direction; The welding assembly is suitable for moving in a second direction and / or a third direction and welding the cover plate and the shell, wherein the first direction, the second direction and the third direction intersect each other.

2. The battery welding device according to claim 1, characterized in that: The first direction is the length direction of the battery, and the clamp assembly includes a first clamp and a second clamp arranged relatively in the first direction, the first clamp is suitable for clamping one end of the battery in the first direction, and the second clamp is suitable for clamping the other end of the battery in the first direction.

3. The battery welding device according to claim 2, characterized in that: The clamp assembly further includes a first driving mechanism, which is suitable for driving the first clamp and / or the second clamp to rotate synchronously around the first direction.

4. The battery welding device according to claim 2, characterized in that: The first clamp and the second clamp are further adapted to move relative to each other in the first direction.

5. The battery welding device according to claim 2, characterized in that: The first clamp includes a second driving member and a first clamping member, the first clamping member encloses a receiving groove, the receiving groove is suitable for receiving the end of the battery, and the second driving member is suitable for driving the first clamping member to move so that the first clamping member clamps the shell and the cover.

6. The battery welding device according to claim 5, characterized in that: The first clamping member includes a first clamping block and a first positioning block which are arranged opposite to each other, and the second driving member drives the first clamping block to move relative to the first positioning block so that the first clamping block and the first positioning block clamp the housing and the cover plate.

7. The battery welding device according to claim 6, characterized in that: The first clamping member also includes a second clamping block and a second positioning block arranged opposite to each other, and the second driving member drives the second clamping block to move relative to the second positioning block so that the first clamping block, the first positioning block, the second clamping block and the second positioning block enclose the receiving groove.

8. The battery welding device according to claim 6, characterized in that: The first clamping member further includes a first cover plate positioning block, which is disposed between the first clamping block and the first positioning block, and the first cover plate positioning block is suitable for pressing the cover plate in the first direction.

9. The battery welding device according to any one of claims 5 to 8, characterized in that: The shell has an opening, the cover plate is arranged at the opening, the first clamping member is provided with a welding hole, and the welding assembly welds the cover plate and the shell at the opening through the welding hole.

10. The battery welding device according to any one of claims 2 to 8, characterized in that: The welding assembly includes a first welding piece and a second welding piece that are arranged opposite to each other in the first direction, and the first welding piece and the second welding piece are suitable for moving in the second direction and / or the third direction and welding the cover plate and the shell.

11. The battery welding device according to claim 1, characterized in that: The battery welding device also includes a dust suction component, which is arranged corresponding to the welding component and is suitable for removing smoke generated by welding.

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