Battery welding jig

Abstract

The utility model relates to the technical field of battery welding, and provides a battery welding jig which comprises a mounting plate, a clamping plate and a clamping device. The first driving part is connected with one side of the mounting plate; the clamping mechanism is connected with the first driving piece, the clamping mechanism is used for clamping the single battery, and the end part of the single battery protrudes out of the clamping mechanism; the welding gun is arranged on one side of the first driving part; wherein the first driving piece can rotate relative to the mounting plate and drive the single batteries to rotate synchronously, and the welding gun is used for conducting full-length welding operation on top covers and shells of protruding parts of the pre-welded single batteries. According to the technical scheme, the rotation of the battery monomers is driven to be matched with the swing track of the welding head on the welding gun to complete welding, speed reduction caused by corner speed reduction can be effectively avoided, and therefore the welding efficiency is improved.

Description

Technical Field

[0001] This application relates to the field of battery welding technology, and more specifically, to a battery welding fixture. Background Technology

[0002] In current welding technology for new energy batteries, especially for welding square batteries, a two-dimensional high-speed linear module is generally used to control the movement path of the laser welding gun. Welding is completed through 2D interpolation of planar graphics, which is suitable for sealing welding of the top cover and the shell of square batteries.

[0003] However, when welding long rectangular batteries, the motion trajectory of the welding head in traditional two-dimensional high-speed linear modules depends on the interpolation motion of the X and Y axes. In corner areas, the welding head needs to decelerate frequently to ensure welding quality and accuracy, making it difficult to increase the overall welding speed. Utility Model Content

[0004] The technical problem to be solved by this application is to provide a battery welding fixture that completes welding by rotating the battery cell itself in conjunction with the oscillating trajectory of the welding head on the welding gun, which can effectively avoid the speed reduction caused by deceleration at corners, thereby improving welding efficiency.

[0005] To solve the above-mentioned technical problems, this application adopts the following technical solution:

[0006] This application provides a battery welding fixture, comprising: a mounting plate; a first driving member connected to one side of the mounting plate; a clamping mechanism connected to the first driving member, the clamping mechanism being used to clamp a battery cell, the end of the battery cell protruding from the clamping mechanism; and a welding torch disposed on one side of the first driving member; wherein the first driving member is rotatable relative to the mounting plate and drives the battery cell to rotate synchronously, and the welding torch is used to perform full welding operation on the top cover and shell of the pre-welded protruding portion of the battery cell.

[0007] In one embodiment, the battery welding fixture further includes a first adapter plate, which is connected to the first driving member. The clamping mechanism is fixed on the first adapter plate, and the first driving member can drive the first adapter plate to rotate.

[0008] In one embodiment, the clamping mechanism includes two first clamping blocks and one second clamping block. The two first clamping blocks are arranged opposite to each other in the width direction of the battery cell and can move relative to or away from each other. The second clamping block is arranged perpendicular to the first clamping blocks. The clamping mechanism also includes a support block, which is fixedly mounted on the first adapter plate and is in the same direction as the second clamping block. The second clamping block is located above the support block and can move toward or away from the support block.

[0009] In one embodiment, a second driving member is provided on the other side of the mounting plate, and the second driving member is coaxially arranged with the first driving member; the mounting plate is provided with a through hole, and both the first driving member and the second driving member are located at the through hole position; the battery welding fixture also includes a positioning mechanism, which is connected to the second driving member and is used for initial positioning of the battery cell, and the battery cell can be moved from one side of the positioning mechanism to one side of the clamping mechanism through the through hole.

[0010] In one embodiment, the battery welding fixture further includes a second adapter plate, which is connected to the second driving member. The positioning mechanism is fixed on the second adapter plate, and the second driving member can drive the second adapter plate to rotate.

[0011] In one embodiment, the positioning mechanism includes two first positioning blocks and one second positioning block. The two first positioning blocks are arranged opposite to each other in the width direction of the battery cell and can move relative to or away from each other. The second positioning block is arranged perpendicular to the first positioning block. The positioning mechanism also includes two spaced-apart support bars. The support bars are fixedly arranged on the second adapter plate and are in the same direction as the second positioning block. The second positioning block is located above the support bars and can move toward or away from the support bars. The support bars are used to support the battery cell.

[0012] In one embodiment, the support strip passes through the through hole and connects with the support block, with the upper end face of the support strip at the same height as the upper end face of the support block.

[0013] In one embodiment, the clamping mechanism further includes a plurality of first cylinders, which are respectively connected to the first clamping block and the second clamping block; the positioning mechanism further includes a plurality of second cylinders, which are respectively connected to the first positioning block and the second positioning block.

[0014] As one implementation, the clamping mechanism is also provided with a dust cover on its outer periphery.

[0015] In one implementation, both the first adapter plate and the second adapter plate are provided with a drag chain assembly for protecting the line.

[0016] The technical solution of this application has the following beneficial effects:

[0017] The battery welding fixture includes a mounting plate and a first driving member, which is mounted on one side of the mounting plate and can rotate relative to the mounting plate. It also includes a clamping mechanism connected to the first driving member, used to clamp battery cells. The end of the clamped battery cell protrudes from the clamping mechanism, facilitating welding with a welding torch positioned on one side of the first driving member. When the first driving member rotates relative to the mounting plate, it drives the clamping mechanism to rotate synchronously. Simultaneously, the welding torch performs full welding on the top cover and shell of the pre-welded protruding portion of the battery cell. After welding one side, the first driving member rotates 90° accordingly, and the welding torch continues welding the other side. This application achieves welding by using the rotation of the battery cell driven by the first driving member in conjunction with the oscillation trajectory of the welding head on the welding torch. In corner areas, the welding torch does not need to decelerate, effectively avoiding speed reduction caused by corner deceleration, thereby improving welding efficiency. Attached Figure Description

[0018] To more clearly illustrate the technical solutions of the embodiments of this application, the accompanying drawings used in the embodiments of this application will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this application and should not be regarded as a limitation of the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0019] Figure 1 This is a schematic diagram of the structure of the battery welding fixture provided in the embodiments of this application;

[0020] Figure 2 These are schematic diagrams of the battery welding fixture provided in the embodiments of this application from different perspectives.

[0021] Figure 3 This is a schematic diagram of the clamping mechanism and positioning mechanism provided in the embodiments of this application;

[0022] Figure 4 This is a schematic diagram of the clamping mechanism provided in the embodiments of this application;

[0023] Figure 5 A schematic diagram of the positioning mechanism provided in the embodiments of this application;

[0024] Figure 6 These are schematic diagrams of the positioning mechanism provided in the embodiments of this application from different perspectives.

[0025] Figure 7 This is a schematic diagram of the structure of the mounting plate provided in the embodiments of this application;

[0026] Figure 8 This is a schematic diagram of the structure of the cable chain assembly provided in an embodiment of this application.

[0027] Icons: 1-Mounting plate; 2-First drive component; 3-Clamping mechanism; 31-First clamping block; 32-Second clamping block; 33-Support block; 34-First cylinder; 4-First adapter plate; 5-Positioning mechanism; 51-First positioning block; 52-Second positioning block; 53-Support bar; 54-Second cylinder; 6-Second adapter plate; 7-Dust cover; 8-Drag chain assembly. Detailed Implementation

[0028] The technical solutions in the embodiments of this application will now be described with reference to the accompanying drawings.

[0029] It should be noted that similar reference numerals and letters in the following figures indicate similar items; therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures. Furthermore, in the description of this application, terms such as "first," "second," etc., are used only to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0030] like Figure 1 , 2 As shown in Figure 7, this application provides a battery welding fixture, including a mounting plate 1 and a first driving member 2. The first driving member 2 is mounted on one side of the mounting plate 1 and can rotate relative to the mounting plate 1. It also includes a clamping mechanism 3, which is connected to the first driving member 2. The clamping mechanism 3 is used to clamp a battery cell. The end of the clamped battery cell protrudes from the clamping mechanism 3, thereby facilitating welding by a welding torch located on one side of the first driving member 2. When the first driving member 2 rotates relative to the mounting plate 1, it can drive the clamping mechanism 3 to rotate synchronously. At the same time, the welding torch performs full welding on the top cover and shell of the pre-welded protruding part of the battery cell. When the welding torch finishes welding one side, the first driving member 2 rotates 90° accordingly, and the welding torch continues to weld the other side. This application completes the welding by using the rotation of the battery cell driven by the first driving member 2 in conjunction with the swing trajectory of the welding head on the welding torch. In the corner area, the welding torch does not need to decelerate, which can effectively avoid the speed reduction caused by corner deceleration, thereby improving the welding efficiency.

[0031] Optionally, the first driving component 2 is a direct drive motor. Taking advantage of the low speed of the direct drive motor, it can also drive the battery cells to rotate, and cooperate with the welding gun to weld the battery cells.

[0032] Optionally, the welding torch can be any welding torch in the prior art, and this application does not make any specific limitation. The welding torch can also be fixed on the mounting plate 1 or on the frame.

[0033] Optionally, the trajectory of the welding torch and the welding process in conjunction with the first drive unit 2 can be achieved through programming using existing technologies.

[0034] Optionally, the rotation of the first driving component 2 after one side of the battery cell is welded can be pre-programmed, or it can be achieved through sensor sensing or by taking a picture.

[0035] Optionally, the mounting plate 1 can be fixed to the frame, thereby providing a fixed support for the entire battery welding fixture.

[0036] Optionally, the battery cells are preferably square cells.

[0037] Optionally, the top cover and casing of the battery cell are generally welded at three points during pre-welding, and then transported to the clamping mechanism 3 by a robot and conveying equipment. The welding gun performs full welding operation by positioning and clamping the clamping mechanism 3.

[0038] like Figure 1 , 3 As shown in Figure 4, in one embodiment, the battery welding fixture also includes a first adapter plate 4, which is connected to the first driving member 2. The clamping mechanism 3 is fixed on the first adapter plate 4. The first driving member 2 can drive the first adapter plate 4 to rotate. By setting the first adapter plate 4, installation space can be provided for the clamping mechanism 3, so that the first driving member 2 can drive the clamping mechanism 3 to rotate synchronously.

[0039] like Figure 3 and 4 As shown, in one embodiment, the clamping mechanism 3 includes two first clamping blocks 31 and one second clamping block 32. The two first clamping blocks 31 are arranged opposite each other in the width direction of the battery cell and can move relative to or away from each other, thereby clamping or releasing the battery cell in the width direction at one end. The second clamping block 32 is arranged perpendicular to the first clamping block 31. The clamping mechanism 3 also includes a support block 33, which is fixedly mounted on the first adapter plate 4 to support and position the battery cell in the height direction. It is in the same direction as the second clamping block 32, which is located above the support block 33. The second clamping block 32 can move toward or away from the support block 33, so that the second clamping block 32 cooperates with the support block 33 to clamp the battery cell in the height direction, thereby improving the stability of the battery cell and preventing loosening when the first driving member 2 drives the battery cell to rotate. Of course, the second clamping block 32 can also move away from the support block 33 to clamp battery cells of different sizes.

[0040] Optionally, in the initial state, the two first clamping blocks 31 are horizontally arranged. Since the battery cell of this application is preferably a square battery, the length direction of the battery cell is perpendicular to the direction of the mounting plate 1 and is transported to the clamping mechanism 3. Therefore, the two first clamping blocks 31 are arranged opposite to each other in the width direction of the battery. Generally, they move relative to each other along the width direction of the battery cell to clamp it. At the same time, they can also clamp batteries of different sizes and orientations.

[0041] Optionally, the support block 33 can be fixed to the first adapter plate 4 by means of parts such as an adapter bracket.

[0042] Optionally, the height direction of a single battery cell refers to the shortest side of the square battery, while the length direction refers to the longest side of the square battery.

[0043] like Figure 1 and 2 As shown, in one embodiment, a second driving member is also provided on the other side of the mounting plate 1. The second driving member is coaxially arranged with the first driving member 2. The mounting plate 1 has a through hole, and the first driving member 2 and the second driving member are both located on both sides of the through hole. By providing the through hole, the battery cell can pass from one side of the positioning mechanism 5 to the side of the clamping mechanism 3. The battery welding fixture also includes a positioning mechanism 5, which is connected to the second driving member and is used for initial positioning of the battery cell. The battery cell can move from one side of the positioning mechanism 5 to the side of the clamping mechanism 3 through the through hole. Since square batteries are relatively long, such as blade batteries, a positioning mechanism 5 is also provided on the opposite side of the mounting plate 1 to initially position the battery cell. Then, the battery cell is moved to one end of the clamping mechanism 3, so that the end protrudes from the clamping mechanism 3. Then, the clamping mechanism 3 clamps the battery cell, and the welding gun works. The clamping mechanism 3 and the positioning mechanism 5 respectively fix the two ends of the battery cell, which can improve stability when the battery cell rotates.

[0044] Optionally, the second driving element has the same structure as the first driving element 2.

[0045] Optionally, the first drive component 2 and the second drive component can be rotated synchronously by programming.

[0046] Optionally, two through holes can be provided on the mounting plate 1, with a clamping mechanism 3 and a positioning mechanism 5 respectively provided on both sides of each through hole. One set of mechanisms can be used to weld the positive electrode of the battery cell, and the other set of mechanisms can be used to weld the negative electrode, thereby improving efficiency.

[0047] Optionally, a push rod mechanism can be installed in front of the positioning mechanism 5 to push the battery cell from the positioning mechanism 5 side to the clamping mechanism 3 side. Of course, it can also be achieved through other mechanisms, and those skilled in the art can choose according to actual needs.

[0048] Optionally, individual battery cells can be transported to the positioning mechanism 5 via a mechanical gripper and conveying equipment.

[0049] like Figure 3 , 5 As shown in Figure 6, in one embodiment, the battery welding fixture also includes a second adapter plate 6, which is connected to the second drive member. The positioning mechanism 5 is fixed on the second adapter plate 6, and the second drive member can drive the second adapter plate 6 to rotate. By setting the second adapter plate 6, an installation space can be provided for the holding mechanism, so that the second drive member can drive the positioning mechanism 5 to rotate synchronously.

[0050] Optionally, both the first adapter plate 4 and the second adapter plate 6 are annular structures that allow battery cells to pass through, corresponding to the through holes on the mounting plate 1.

[0051] like Figure 5 and 6 As shown, in one embodiment, the positioning mechanism 5 includes two first positioning blocks 51 and one second positioning block 52. The two first positioning blocks 51 are arranged opposite each other in the width direction of the battery cell and can move toward or away from each other, thereby enabling initial positioning and clamping of one end of the battery cell in the width direction, and also enabling positioning and clamping of battery cells of different sizes. The second positioning block 52 is arranged perpendicularly to the first positioning block 51. The positioning mechanism 5 also includes two spaced support bars 53, which are fixedly mounted on the second adapter plate 6 and are in the same direction as the second positioning block 52. The second positioning block 52 is located above the support bar 53. The second positioning block 52 can move toward or away from the support bar 53. The support bar 53 is used to support the battery cell, so that the second positioning block 52 cooperates with the support bar 53 to clamp one end of the battery cell that has not been fully welded in the height direction. The two first positioning blocks 51 clamp the width direction, thereby improving the stability of the battery cell and preventing the second driving component from loosening when driving the battery cell to rotate. Of course, the second positioning block 52 can also move away from the support bar 53 to clamp battery cells of different sizes.

[0052] Optionally, the distance between the two support bars 53 should be less than the width of the battery cell, so as to prevent the battery cell from falling into the gap between the two support bars 53.

[0053] Optionally, the positioning mechanism 5 does not need to clamp the battery cell too tightly during the initial clamping and positioning, as this would affect the push rod mechanism from pushing the battery cell to one side of the clamping mechanism 3.

[0054] In one implementation, the support bar 53 passes through the through hole and connects with the support block 33. The upper end face of the support bar 53 and the upper end face of the support block 33 are at the same height. In this way, when the battery cell is placed on the upper end face of the support bar 53, the end of the battery cell to be welded can be pushed smoothly to one end of the clamping mechanism 3.

[0055] The battery cell is first positioned and clamped by two first positioning blocks 51 and one second positioning block 52 in cooperation with the support bar 53. The end to be welded faces the clamping mechanism 3. Then, the battery cell is pushed by the push rod mechanism, and the end to be welded protrudes out of the clamping mechanism 3. Then, the clamping mechanism 3 and the positioning mechanism 5 clamp the battery cell and fix both ends of the battery cell. The welding gun is ready to start welding.

[0056] like Figure 4 and 5 As shown, in one embodiment, the clamping mechanism 3 further includes a plurality of first cylinders 34, which are respectively connected to the first clamping block 31 and the second clamping block 32, thereby controlling the movement of the first clamping block 31 and the second clamping block 32; the positioning mechanism 5 further includes a plurality of second cylinders 54, which are respectively connected to the first positioning block 51 and the second positioning block 52, thereby controlling the movement of the first positioning block 51 and the second positioning block 52.

[0057] Optionally, each of the first cylinder 34 and the second cylinder 54 is provided with a regulating valve, which is mainly used to control parameters such as the cylinder's movement speed, airflow direction, and pressure.

[0058] like Figure 1 As shown, in one embodiment, a dust cover 7 is also provided on the outer periphery of the clamping mechanism 3. By providing the dust cover 7, the amount of welding slag entering the clamping mechanism 3 is reduced, thereby improving the service life of the equipment.

[0059] like Figure 8 As shown, in one embodiment, both the first adapter plate 4 and the second adapter plate 6 are equipped with cable chain assemblies 8 for protecting the lines. By providing the cable chain assembly 8, devices for protecting and managing lines such as wires and cables can be implemented. At the same time, the cable chain assembly 8 can extend, retract, and bend as the equipment moves, thereby protecting the lines from damage.

[0060] Optionally, the cable chain assembly 8 includes a cable chain, a fixing part, and a follower part. The fixing part is fixed on the mounting plate 1, and the follower part is connected to the fixing part. It can follow the first drive member 2 and the second drive member, thereby protecting the circuit.

[0061] Optionally, the cable chain assembly 8 used in this application is a readily available and relatively mature product. Those skilled in the art can select a suitable cable chain assembly 8 according to actual needs and install it on the mounting plate 1 to protect the circuit. This application will not go into further detail here. Of course, this application can also use other structural forms of the cable chain assembly 8 to achieve the purpose of protecting the circuit.

[0062] The above description is merely an embodiment of this application and is not intended to limit the scope of protection of this application. Various modifications and variations can be made to this application by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the scope of protection of this application.

[0063] The above description is merely a specific embodiment of this application, but the scope of protection of this application is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the scope of the technology disclosed in this application should be included within the scope of protection of this application. Therefore, the scope of protection of this application should be determined by the scope of the claims.

[0064] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

Claims

1. A battery welding fixture, comprising: The battery welding jig comprises: a mounting plate; a first driving member connected to one side of the mounting plate; a clamping mechanism connected to the first driving member, the clamping mechanism being used for clamping a battery monomer, an end of the battery monomer protruding from the clamping mechanism; a welding gun arranged on one side of the first driving member; wherein the first driving member is rotatable relative to the mounting plate and drives the battery monomer to rotate synchronously, and the welding gun is used for full welding operation on the top cover and the shell of the protruding part of the battery monomer which has been pre-welded.

2. The battery welding fixture of claim 1, wherein, The battery welding jig further comprises a first adapter plate connected to the first driving member, and the clamping mechanism is fixed on the first adapter plate, and the first driving member can drive the first adapter plate to rotate.

3. The battery welding fixture of claim 2, wherein, The clamping mechanism comprises two first clamping blocks and one second clamping block, the two first clamping blocks are oppositely arranged in the width direction of the battery monomer and are movable relative to or away from each other; the second clamping block is arranged perpendicularly to the first clamping blocks; the clamping mechanism further comprises a support block fixedly arranged on the first adapter plate and located in the same direction as the second clamping block, the second clamping block is located above the support block, and the second clamping block is movable towards or away from the support block.

4. The battery welding fixture of claim 3, wherein, The other side of the mounting plate is further provided with a second driving member coaxially arranged with the first driving member; the mounting plate is provided with a through hole, and the first driving member and the second driving member are arranged at the position of the through hole; the battery welding jig further comprises a positioning mechanism connected to the second driving member, which is used for initial positioning of the battery monomer, and the battery monomer can be moved from one side of the positioning mechanism to one side of the clamping mechanism through the through hole.

5. The battery welding fixture of claim 4, wherein, The battery welding jig further comprises a second adapter plate connected to the second driving member, and the positioning mechanism is fixed on the second adapter plate, and the second driving member can drive the second adapter plate to rotate.

6. The battery welding fixture of claim 5, wherein, The positioning mechanism comprises two first positioning blocks and one second positioning block, the two first positioning blocks are oppositely arranged in the width direction of the battery monomer and are movable relative to or away from each other; the second positioning block is arranged perpendicularly to the first positioning blocks; the positioning mechanism further comprises two spaced support bars fixedly arranged on the second adapter plate and located in the same direction as the second positioning block, the second positioning block is located above the support bars, and the second positioning block is movable towards or away from the support bars, and the support bars are used for supporting the battery monomer.

7. The battery welding fixture of claim 6, wherein, The support bars are connected to the support blocks through the through hole, and the upper end surfaces of the support bars and the support blocks are at the same height.

8. The battery welding fixture of claim 6 or 7, wherein, The clamping mechanism further comprises a plurality of first air cylinders respectively connected to the first clamping blocks and the second clamping block; the positioning mechanism further comprises a plurality of second air cylinders respectively connected to the first positioning blocks and the second positioning block.

9. The battery welding fixture of claim 4 or 5, wherein, The outer periphery of the clamping mechanism is further provided with a dust cover.

10. The battery welding fixture of claim 5, wherein, The first adapter plate and the second adapter plate are each provided with a drag chain assembly for protecting the lines.

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