Clamp

Abstract

The utility model provides a clamp. The clamp comprises a mounting mechanism for mounting a battery cell and a supporting piece, wherein the battery cell comprises a plurality of tabs, the mounting mechanism is rotationally mounted on the supporting piece so as to rotate among a plurality of operation positions relative to the supporting piece, and each tab corresponds to the corresponding operation position. According to the clamp provided by the utility model, after the battery cell is mounted on the mounting mechanism, the battery cell does not need to be repeatedly dismounted and mounted in the tab welding process, and different tabs can be placed in a welding area for welding by a welding device only by rotating the mounting mechanism to different operation positions, so that the welding efficiency of the battery cell tabs is greatly improved.

Description

Technical Field

[0001] The utility model relates to the field of batteries, in particular to a clamp. Background Art

[0002] Currently, common welding fixtures are often only suitable for single-tab or double-tab battery cells, and the welding device is usually fixed to one side of the welding fixture. Therefore, when welding multi-tab battery cells, the battery cell must first be fixed to the welding fixture. After welding a portion of the tabs, the battery cell needs to be removed and reinstalled to place the remaining tabs in the welding position and complete the welding in sequence. When there are many tabs and the tabs are located on different sides of the battery cell, multiple disassembly and installation steps are required. This process is cumbersome and greatly reduces the efficiency of battery tab welding. Utility Model Content

[0003] An embodiment of the present utility model provides a clamp that can solve the problem of low welding efficiency of battery cell tabs in the above-mentioned welding process.

[0004] An embodiment of the present invention provides a clamp, which includes: a mounting mechanism for mounting a battery cell, the battery cell including a plurality of tabs; and a support member; wherein the mounting mechanism is rotatably mounted on the support member to rotate between a plurality of operating positions relative to the support member, and each tab corresponds to a corresponding operating position.

[0005] In one embodiment, the mounting mechanism includes a battery cell mounting plate and a plurality of tab mounting assemblies mounted on the battery cell mounting plate; the battery cell also includes a battery cell body, and a plurality of tabs are connected to the battery cell body; wherein the battery cell mounting plate is used to mount the battery cell body and is rotatably mounted on the support member, and the tab mounting assembly is used to mount the corresponding tabs.

[0006] In one embodiment, the tab mounting assembly includes a tab mounting plate and a tab rotating plate, wherein the tab mounting plate is mounted on the battery cell mounting plate; wherein the tab rotating plate is rotatably connected to the tab mounting plate to press the tab against the tab mounting plate.

[0007] In one embodiment, the tab rotating plate includes a base portion and a pressing portion connected to the base portion, the base portion is rotatably mounted on the tab mounting plate, and the pressing portion includes a pressing surface for pressing the tab; wherein the pressing surface is provided with an extension groove, and the extension groove extends along the extension direction of the rotating shaft of the base portion.

[0008] In one embodiment, the tab mounting plate is provided with a receiving groove, and the mounting mechanism further includes a tab pushing assembly, which is mounted on the tab mounting plate; wherein the tab pushing assembly is used to push the tab so that the tab is accommodated in the receiving groove and abuts against the side wall of the receiving groove.

[0009] In one embodiment, the tab pusher includes a fixed seat, a pusher and a connecting member, the pusher is movably connected to the fixed seat, and the connecting member is movably connected to the fixed seat to have a first state and a second state relative to the fixed seat; wherein, when the connecting member is in the first state, the connecting member is connected to the pusher to prevent the pusher from pushing the tab; when the connecting member is in the second state, the pusher pushes the tab.

[0010] In one embodiment, the tab pusher also includes an elastic member, and the connecting member includes a hooking portion; wherein, when the connecting member is in a first state, the hooking portion hooks the pushing member to prevent the pushing member from pushing the tab, the elastic member is connected between the fixing seat and the pushing member and is in an elastically compressed state, and when the connecting member is in a second state, the hooking portion disengages from the pushing member.

[0011] In one embodiment, a gap is provided between the tab mounting plate and the cell mounting plate, and the gap is connected to the accommodating groove.

[0012] In one embodiment, the battery cell mounting plate is provided with a through hole, and the through hole is used to connect to the vacuum pipe to adsorb the battery cell.

[0013] In one embodiment, the fixture further comprises a moving assembly, and the support member is movably mounted on the moving assembly, wherein a moving plane of the support member is parallel to a rotation plane of the mounting mechanism.

[0014] The utility model provides a clamp, which includes a mounting mechanism and a support member for mounting a battery cell. The battery cell includes a plurality of tabs, and the mounting mechanism is rotatably mounted on the support member so as to rotate between a plurality of operating positions relative to the support member, and each tab corresponds to a corresponding operating position. After the battery cell is mounted on the mounting mechanism, the structural design of the clamp enables the mounting mechanism to be rotated and switched between different operating positions so that the plurality of tabs are aligned with the welding area of ​​the welding device in sequence for welding operations. With the clamp provided by the utility model, during the welding process of a plurality of tabs, there is no need to remove the battery cell from the clamp and reinstall it. Instead, the mounting mechanism only needs to be rotated to the corresponding operating position, and the different tabs can be aligned with the welding area, and then welded by the welding device. This design not only simplifies the operating process and significantly improves the welding efficiency of the battery cell tabs, but also reduces the operating time and possible risks caused by frequent disassembly and assembly of the battery cell. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following briefly introduces the drawings required for use in the description of the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative work.

[0016] Figure 1This is a schematic structural diagram of a clamp provided by an embodiment of the present utility model;

[0017] Figure 2 yes Figure 1 Schematic diagram of the structure of the installation mechanism;

[0018] Figure 3 yes Figure 2 Enlarged view of part A;

[0019] Figure 4 From another perspective Figure 1 Schematic diagram of the structure of the mounting mechanism and the support member;

[0020] Figure 5 yes Figure 4 Enlarged view of part B;

[0021] Figure 6 yes Figure 3 Schematic diagram of the structure of the middle tab rotating plate and the tab mounting plate;

[0022] Figure 7 1 is a schematic structural diagram of the clamp 100 from another perspective provided by an embodiment of the present utility model;

[0023] Figure 8 yes Figure 7 Enlarged view of part C;

[0024] Figure 9 yes Figure 1 Schematic diagram of the structure of the battery cell mounting plate;

[0025] Description of reference numerals:

[0026] 100. Clamp; 110. Mounting mechanism; 120. Support member; 130. Moving assembly; 111. Cell mounting plate; 112. Tab mounting assembly; 113. Tab pushing assembly; 121. Tab mounting plate; 122. Tab rotating plate; 201. Base portion; 202. Pressing portion; 204. Abutting wall; 205. Accommodating groove; 206. Gap; 207. Through hole; 301. Fixed seat; 302. Pushing member; 303. Connecting member; 304. Elastic member; 305. Base; 306. Extension portion; 307. Pressing surface; 308. Extension groove. DETAILED DESCRIPTION

[0027] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments in the present invention, all other embodiments obtained by those skilled in the art without making creative work are within the scope of protection of the present invention. In addition, it should be understood that the specific implementation methods described herein are only used to illustrate and explain the present invention, and are not used to limit the present invention. In the present utility model, unless otherwise specified, the directional words used, such as "upper" and "lower", generally refer to the upper and lower parts of the device in actual use or working state, specifically the drawing direction in the accompanying drawings; while "inside" and "outside" refer to the outline of the device.

[0028] In order to solve the problem of low welding efficiency of battery cell tabs in the related art, an embodiment of the present invention provides a clamp 100, please refer to Figure 1 , Figure 1 1 is a schematic structural diagram of a fixture 100 provided in an embodiment of the present invention. The fixture 100 includes a mounting mechanism 110 for mounting a battery cell and a support member 120. The battery cell (not shown) includes multiple tabs, which may be located on different sides of the battery cell. The mounting mechanism 110 is rotatably mounted on the support member 120, enabling the mounting mechanism 110 to rotate relative to the support member 120 between multiple operating positions, with each tab corresponding to a corresponding operating position.

[0029] Specifically, the clamp 100 provided in this embodiment cooperates with the welding device to weld the tab, and the workflow includes the following steps:

[0030] 1. Installing the battery cell: First, the battery cell is installed in the mounting mechanism 110 in the fixture 100. The mounting mechanism 110 is designed to firmly fix the battery cell to ensure that the tabs of the battery cell are not easily displaced during the welding operation.

[0031] 2. Rotational positioning: After the battery cell is installed, the installation mechanism 110 will rotate relative to the support member 120 to align each tab to be welded on the battery cell with the preset welding area one by one.

[0032] 3. Welding operation: After the tabs of the battery cell are aligned with the preset welding area, the welding device performs welding operations on the tabs.

[0033] 4. Repeat steps 2 and 3 above until all tabs are welded.

[0034] The fixture 100 provided in this embodiment, through an efficient rotation mechanism, does not require frequent adjustment of the position of the battery cell when welding multiple tabs. The rapid switching of multiple tab welding processes can be achieved simply by rotating the mounting mechanism 110. In the related art, it is often necessary to repeatedly adjust the position of the battery cell or welding device to ensure that each tab can be connected to the preset welding area one by one. This method is not only cumbersome to operate, but also easily leads to inaccurate positioning of the tab, thereby affecting the welding quality. The fixture 100 of this embodiment avoids these complicated operating steps through an efficient rotation mechanism, reduces the difficulty of operation, and improves the overall welding efficiency.

[0035] In some embodiments, see Figures 2 to 5 , Figure 2 yes Figure 1 A schematic structural diagram of the mounting mechanism 110 is shown in FIG. Figure 3 yes Figure 2 The enlarged view of part A in the middle Figure 4 From another perspective Figure 1 A schematic diagram of the structure of the mounting mechanism 110 and the support member 120, Figure 5 yes Figure 3 An enlarged view of part B in the figure. The mounting mechanism 110 in the fixture 100 includes a cell mounting plate 111, and also includes a plurality of tab mounting assemblies 112 mounted on the cell mounting plate 111. The cell (not shown in the figure) includes not only a plurality of tabs, but also a cell body connected to the plurality of tabs. The cell mounting plate 111 is used to mount the cell body and is rotatably mounted on the support 120, and the tab mounting assembly 112 is used to mount the corresponding tab. The cell body in this embodiment may include a positive electrode, a negative electrode and a shell, and the shell is used to contain an electrolyte.

[0036] Specifically, in one embodiment, the cell mounting plate 111 is fixedly mounted above the support 120 and rotated by a rotating device, which enables the cell mounting plate 111 to rotate relative to the support 120. The edge of the cell mounting plate 111 is connected to a plurality of extensions 306, which are designed to support and fix a plurality of tab mounting assemblies 112. Each tab mounting assembly 112 is securely mounted on these extensions 306 (see FIG. Figure 9) and rotates with it when the battery cell mounting plate 111 rotates. This rotation mechanism can ensure that the tab mounting assembly 112 always maintains a constant relative position with the battery cell mounting plate 111 during the rotation process, so that the tabs can enter the welding area one by one in a predetermined order for welding. In this way, the rotation of the battery cell mounting plate 111 not only improves the docking accuracy of the tabs and simplifies the operation steps, but also avoids the complex operation of frequently adjusting the position of the battery cell or the welding device in the related art, thereby improving the overall efficiency of the welding process and reducing the risk of errors during operation.

[0037] In some embodiments, see Figure 3 The tab mounting assembly 112 includes a tab mounting plate 121 mounted on the cell mounting plate 111 and a tab rotating plate 122 . The tab rotating plate 122 is rotatably mounted on the tab mounting plate 121 to press the tab against the tab mounting plate 121 .

[0038] Specifically, in one embodiment, the tab rotating plate 122 is designed to be rotatably connected to the tab mounting plate 121 via a rotating shaft. The rotating shaft passes through the through hole provided on the tab rotating plate 122 and is connected to the corresponding joint portion on the tab mounting plate 121, so that the tab rotating plate 122 can rotate relative to the tab mounting plate 121 around the rotating shaft. In actual operation, when the battery cell is installed on the battery cell mounting plate 111, multiple tabs are located above the tab mounting plate 121. These tabs need to be precisely fixed in the appropriate position before welding to ensure accuracy and stability during the welding process. To achieve this purpose, after the battery cell is installed, the tab rotating plate 122 will rotate around its rotating shaft. During the rotation process, the tab rotating plate 122 will gradually rotate until the tab is pressed against the surface of the tab mounting plate 121, thereby fixing the tab position. Through this design, the tab rotating plate 122 can ensure that all tabs are accurately pressed in the preset position before the battery core is welded, thereby effectively preventing the tab from shifting during the welding process, thereby ensuring the welding quality of the tab.

[0039] In some embodiments, see Figure 6 , Figure 6 yes Figure 3 Schematic diagram of the structure of the tab rotating plate 122 and the tab mounting plate 121. The tab rotating plate 122 includes a base portion 201 and a pressing portion 202 connected to the base portion 201. The base portion 201 is rotatably mounted on the tab mounting plate 121. The pressing portion 202 includes a pressing surface 307 for pressing the tab. The pressing surface 307 is provided with an extension groove 308, which extends along the extension direction of the rotation axis of the base portion 201.

[0040] Specifically, in one embodiment, the base portion 201 is provided with a through hole extending along the length direction of the base portion 201, and the through hole is used for a rotating shaft to pass through, so that the base portion 201 can rotate around the rotating shaft relative to the tab mounting plate 121. The pressing surface 307 of the pressing portion 202 is designed with an extension groove 308 extending along the extension direction of the rotating shaft. The presence of the extension groove 308 can significantly increase the friction between the pressing surface 307 and the tab when the pressing surface 307 contacts the tab, thereby making it less likely for the tab to shift after being pressed against the tab mounting plate 121 by the tab rotating plate 122. The position of the tab can be effectively stabilized, so that the welding device can perform welding operations more accurately and stably, thereby ensuring the welding quality of the tab.

[0041] In some embodiments, see Figure 7 、 Figure 8 , Figure 7 This is a structural diagram of the clamp 100 from another perspective provided by an embodiment of the present invention. Figure 8 yes Figure 7 In the enlarged view of part C, the mounting mechanism 110 further includes a tab pushing assembly 113 mounted on the tab mounting plate 121 . The tab mounting plate 121 has an abutting wall 204 . The tab pushing assembly 113 is used to push the tab so that the tab abuts against the abutting wall 204 .

[0042] Specifically, the tab pushing assembly 113 is used to push the tab to move, and in the moving direction, the tab mounting plate 121 has an abutment wall 204 at a position opposite to the tab pushing assembly 113, so that the tab pushing assembly 113 pushes the tab until the tab abuts against the abutment wall 204. When the tab is pushed to contact the abutment wall 204, the abutment wall 204 will play a positioning and supporting role, so that the tab is firmly fixed in a certain position, so that the tab is not easily displaced during the welding process, thereby ensuring the welding quality of the tab.

[0043] In some embodiments, see Figure 8 The tab pusher 302 includes a fixed base 301, a pusher 302, and a connecting member 303. The pusher 302 is movably connected to the fixed base 301, allowing the pusher 302 to move relative to the fixed base 301. The connecting member 303 is movably connected to the fixed base 301 to have a first state and a second state relative to the fixed base 301. When the connecting member 303 is in the first state, the connecting member 303 is connected to the pusher 302 to prevent the pusher 302 from pushing the tab; when the connecting member 303 is in the second state, the pusher 302 pushes the tab. In this embodiment, by controlling the connecting member 303 to switch between the first state and the second state, it is possible to conveniently control whether the pusher 302 pushes the tab, thereby improving the efficiency of tab welding.

[0044] In some embodiments, see Figure 8 The tab pusher 302 also includes an elastic member 304, and the connecting member 303 includes a hooking portion; wherein, when the connecting member 303 is in the first state, the hooking portion hooks the pushing member 302 to prevent the pushing member 302 from pushing the tab, and the elastic member 304 is connected between the buckle and the pushing member 302 and is in an elastically compressed state. When the buckle is in the second state, the hooking portion is separated from the pushing member 302.

[0045] Specifically, the elastic member 304 is located between the clip and the pusher 302. When the connecting member 303 is in the first state, the hook portion hooks the pusher 302, so that the pusher 302 is away from the tab. At this time, the elastic member 304 is in an elastically compressed state. When the connecting member 303 is in the first state, the hook portion is disengaged from the pusher 302. The elastic member 304 returns to its initial state and pushes the pusher 302, so that the pusher 302 pushes the tab.

[0046] In some embodiments, see Figure 8 The tab mounting plate 121 is provided with a receiving groove 205 for receiving the tab, and the side wall of the receiving groove 205 is the abutting wall 204 in the above embodiment.

[0047] Specifically, the length direction of the receiving groove 205 is consistent with the movement direction of the tab pushing assembly 113. After the battery cell is installed on the battery cell mounting plate 111, the multiple tabs of the battery cell are respectively located above the corresponding receiving groove 205. The multiple tab pushing assemblies 113 respectively push the corresponding tabs until the corresponding tabs abut against the side walls of the receiving groove 205, so that the tabs are not easily displaced in the movement direction of the tab pushing assembly 113. Then, the tab rotating plate 122 is rotated until the tab rotating plate 122 presses the tabs against the bottom wall of the receiving groove 205, so that the tabs are not easily displaced in the direction perpendicular to the movement direction of the tab pushing assembly 113.

[0048] In some embodiments, see Figure 3 、 Figure 9 , Figure 9 yes Figure 1 A schematic structural diagram of the cell mounting plate 111 is shown. A gap 206 is provided between the tab mounting plate 121 and the cell mounting plate 111 , and the gap 206 is connected to the receiving groove 205 .

[0049] Specifically, the battery cell mounting plate 111 includes a base 305 for mounting the battery cell, and also includes an extension portion 306 connected to the edge of the base 305 for supporting and fixing multiple tab mounting assemblies 112, so that there is a gap 206 between the multiple tab mounting plates 121 and the base 305. When the multiple tabs of the battery cell are fixed to the tab mounting plate 121, a part of the tab abuts against the tab mounting plate 121, and the other part connected to the part is opposite to the gap 206, so that the welding device can perform welding operations on the other part of the tab through the gap 206.

[0050] In some embodiments, please refer to Figure 9 The battery cell mounting plate 111 is provided with a through hole 207, and the through hole 207 is used to connect to the vacuum pipe to adsorb the battery cell.

[0051] Specifically, when the battery cell is installed on the battery cell mounting plate 111, the interval between the battery cell and the battery cell mounting plate 111 is small. In order to further fix the battery cell, a plurality of through holes 207 are designed on the battery cell mounting plate 111. The through holes 207 are connected to a vacuum pipe (not shown in the figure). The vacuum pipe can extract the air in the through holes 207 to form a vacuum environment. The existence of this vacuum environment will make the pressure in the through holes 207 smaller, and the battery cell will be adsorbed onto the battery cell mounting plate 111. This adsorption force ensures that the battery cell is tightly attached to the battery cell mounting plate 111 through the action of negative pressure, making it less likely that the battery cell will shift, thereby improving the accuracy of the overall assembly and facilitating the welding operation of the battery cell's pole ears by the welding device.

[0052] In some embodiments, please refer to Figure 1 The fixture 100 further includes a moving assembly 130 , and the support member 120 is movably mounted on the moving assembly 130 . The moving plane of the support member 120 is parallel to the rotation plane of the mounting mechanism 110 .

[0053] Specifically, before the battery cell is installed on the mounting mechanism 110, the support member 120 is located in the first position. In the first position, the support member 120 is far away from the welding device, ensuring that it will not be restricted by the welding device during the battery cell installation stage. The battery cell is installed on the mounting mechanism 110 at the first position, and the operations such as the tab fixation described above are performed. After the above series of operations are completed, the support member 120 is controlled to move to the second position along the length direction of the movable assembly 130. When the support member 120 moves to the second position, the welding device will perform welding operations on the multiple tabs of the battery cell one by one according to predetermined steps. After all the tabs that need to be welded are welded, the support member 120 will move back to the first position along the length direction of the movable assembly 130, and then the battery cell will be detached from the mounting mechanism 110 to make room for the assembly and welding operations of the next batch of battery cells.

[0054] The present invention provides a fixture 100 comprising a mounting mechanism 110 and a support member 120 for mounting a battery cell. The battery cell comprises a plurality of tabs, and the mounting mechanism 110 is rotatably mounted on the support member 120 so as to rotate relative to the support member 120 between a plurality of operating positions, with each tab corresponding to a corresponding operating position. Once the battery cell is mounted on the mounting mechanism 110, the structural design of the fixture 100 enables the mounting mechanism 110 to be rotated and switched between different operating positions, so that the plurality of tabs are sequentially aligned with the welding area of ​​a welding device for welding. With the fixture 100 provided by the present invention, during the welding process of the plurality of tabs, there is no need to remove the battery cell from the fixture 100 and reinstall it. Instead, the mounting mechanism 110 need only be rotated to the corresponding operating position, and the various tabs can be aligned with the welding area before welding using the welding device. This design not only simplifies the operating process and significantly improves the efficiency of welding the battery cell tabs, but also reduces the operating time and potential risks associated with frequent disassembly and assembly of the battery cell.

[0055] The above is a detailed introduction to the embodiments of the present invention. Specific examples are used in this article to illustrate the principles and implementation methods of the present invention. The description of the above embodiments is only used to help understand the method and core idea of ​​the present invention. At the same time, for those skilled in the art, based on the idea of ​​the present invention, there will be changes in the specific implementation methods and application scope. In summary, the contents of this specification should not be understood as limiting the present invention.

Claims

1. A clamp, characterized in that: include: An installation mechanism, used for installing a battery cell, wherein the battery cell includes a plurality of tabs; and Support members; The mounting mechanism is rotatably mounted on the support member so as to rotate between a plurality of operating positions relative to the support member, and each of the tabs corresponds to a corresponding operating position.

2. The clamp according to claim 1, characterized in that The mounting mechanism includes a battery cell mounting plate and a plurality of tab mounting assemblies mounted on the battery cell mounting plate; the battery cell also includes a battery cell body, and a plurality of tabs are connected to the battery cell body; wherein, the battery cell mounting plate is used to mount the battery cell body and is rotatably mounted on the support member, and the tab mounting assembly is used to mount the corresponding tabs.

3. The clamp according to claim 2, characterized in that The tab mounting assembly includes a tab mounting plate and a tab rotating plate, wherein the tab mounting plate is mounted on the battery cell mounting plate; wherein the tab rotating plate is rotatably connected to the tab mounting plate to press the tab against the tab mounting plate.

4. The clamp according to claim 3, characterized in that The tab rotating plate includes a base portion and a pressing portion connected to the base portion, the base portion is rotatably mounted on the tab mounting plate, and the pressing portion includes a pressing surface for pressing the tab; wherein the pressing surface is provided with an extension groove, and the extension groove extends along the extension direction of the rotating shaft of the base portion.

5. The clamp according to claim 3, characterized in that The tab mounting plate is provided with a receiving groove, and the mounting mechanism further includes a tab pushing assembly, which is mounted on the tab mounting plate; wherein the tab pushing assembly is used to push the tab so that the tab is accommodated in the receiving groove and abuts against the side wall of the receiving groove.

6. The clamp according to claim 5, characterized in that The tab pusher includes a fixing seat, a pushing member and a connecting member, wherein the pushing member is movably connected to the fixing seat, and the connecting member is movably connected to the fixing seat to have a first state and a second state relative to the fixing seat; wherein, when the connecting member is in the first state, the connecting member is connected to the pushing member to prevent the pushing member from pushing the tab; when the connecting member is in the second state, the pushing member pushes the tab.

7. The clamp according to claim 6, characterized in that The tab pusher also includes an elastic member, and the connecting member includes a hooking portion; wherein, when the connecting member is in a first state, the hooking portion hooks the pushing member to prevent the pushing member from pushing the tab, and the elastic member is connected between the fixing seat and the pushing member and is in an elastically compressed state. When the connecting member is in a second state, the hooking portion is disengaged from the pushing member.

8. The clamp according to claim 7, characterized in that A gap is provided between the tab mounting plate and the cell mounting plate, and the gap is connected to the accommodating groove.

9. The clamp according to claim 2, characterized in that The battery core mounting plate is provided with a through hole, and the through hole is used to connect to a vacuum pipe to adsorb the battery core.

10. The clamp according to any one of claims 1 to 9, characterized in that: It also includes a moving assembly, and the support member is movably mounted on the moving assembly, wherein the moving plane of the support member is parallel to the rotation plane of the mounting mechanism.

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