Pole lug welding positioning tool and pole lug welding positioning assembly

Abstract

The utility model relates to a tab welding positioning tool and a tab welding positioning assembly, and relates to the technical field of battery processing equipment. The tab welding positioning tool comprises a first clamping part and a second clamping part. The first clamping part comprises an upper clamping plate and a lower clamping plate, and the upper clamping plate and the lower clamping plate are matched to clamp the battery cell between the upper clamping plate and the lower clamping plate. The second clamping part is arranged at the side part of the first clamping part, the second clamping part can slide relative to the first clamping part along a first direction and can be relatively fixed, and the first direction corresponds to the thickness direction of the battery cell. Wherein a lead-out part extends out of the battery cell, and the lead-out part is partially clamped on the second clamping part and is in sliding connection with the second clamping part. According to the tab welding positioning tool, the relative positions of the tab and the battery cell can be effectively fixed in the welding process of the tab and the battery cell, and the welding strength and the welding quality of the tab are improved.

Description

TECHNICAL FIELD

[0001] The application relates to the technical field of battery processing equipment, in particular to an electrode lug welding positioning tool and an electrode lug welding positioning assembly. BACKGROUND

[0002] In the process of battery assembly, one important process is the connection between the battery cell and the electrode lug, which is usually fixed by ultrasonic welding.

[0003] In the prior art, when welding between the battery cell and the electrode lug, a tool clamp is usually used to clamp and fix the battery cell, mainly to limit the movement of the battery cell in the horizontal direction, and then the battery cell and the electrode lug are welded.

[0004] However, the above scheme can only fix the position of the battery cell in actual use, and the position of the electrode lug cannot be effectively limited, resulting in a large deviation of the relative position of the electrode lug and the battery cell, and a large deviation of the welding position of the electrode lug from the battery cell when the battery cell and the electrode lug are welded, which not only affects the welding quality of the electrode lug, but also affects the subsequent assembly and connection process of the battery.

[0005] Therefore, it is urgent to provide a positioning tool that can effectively fix the relative position of the electrode lug and the battery cell during welding. CONTENT OF THE INVENTION

[0006] The purpose of the application is to provide an electrode lug welding positioning tool and an electrode lug welding positioning assembly, which can effectively fix the relative position of the electrode lug and the battery cell during welding, and improve the welding strength and quality of the electrode lug.

[0007] In order to achieve the above purpose, the first aspect of the application provides an electrode lug welding positioning tool for clamping when welding a battery cell and an electrode lug. The electrode lug welding positioning tool comprises a first clamping part and a second clamping part. The first clamping part comprises an upper clamping plate and a lower clamping plate, which are used to clamp the battery cell therebetween. The second clamping part is arranged on the side of the first clamping part, and can slide relative to the first clamping part in a first direction and be fixed relative to the first clamping part, the first direction corresponding to the thickness direction of the battery cell. The battery cell has a lead-out portion extending therefrom, the lead-out portion being partially clamped in the second clamping part and being in sliding connection with the second clamping part.

[0008] Based on the above-mentioned embodiments of the present application, when the battery cell and the tab are welded, the battery cell is fixed between the upper clamping plate and the lower clamping plate. At the same time, by setting the second clamping part, the lead-out part at the end of the battery cell is clamped between the second clamping part, and when the tab is welded, the tab is welded and fixed with the end of the lead-out part away from the battery cell. With the second clamping part sliding along the first direction, the end of the lead-out part will move with the second clamping part, and the distance between the end of the lead-out part exposed to the second clamping part and the battery cell is adjusted, that is, the distance between the welding position of the lead-out part and the tab and the battery cell is adjusted. At the same time, the second clamping part can be locked relative to the first clamping part after moving along the first direction to the appropriate position. At this time, the position of the second clamping part is fixed, so that when the same batch of batteries are processed, the distance between the battery cell and the tab welding position can be controlled at a stable and appropriate distance. Thus, the welding quality of the tab is improved, and subsequent assembly and connection of the battery are facilitated.

[0009] In some embodiments, the second clamping part includes an upper restraint block and a lower restraint block, the upper restraint block is slidingly arranged on the side of the first clamping part along the first direction, and the lower restraint block is slidingly arranged on the side of the first clamping part along the first direction, and the lead-out part is located between the upper restraint block and the lower restraint block.

[0010] Based on the above-mentioned embodiments of the present application, by setting the second clamping part as a combination of the upper restraint block and the lower restraint block, the separate arrangement can facilitate clamping the lead-out part between the upper restraint block and the lower restraint block, and can also facilitate adjusting the distance between the upper restraint block and the lower restraint block, thereby facilitating adjusting the clamping force of the second clamping part on the lead-out part.

[0011] In some embodiments, the upper restraint block is provided with a first waist-shaped hole, the length direction of the first waist-shaped hole is consistent with the first direction, the upper clamping plate is provided with a first screw, the first screw passes through the first waist-shaped hole and can relatively fix the positions of the upper clamping plate and the upper restraint block. The lower restraint block is provided with a second waist-shaped hole, the length direction of the second waist-shaped hole is consistent with the first direction, the lower clamping plate is provided with a second screw, the second screw passes through the second waist-shaped hole and can relatively fix the positions of the lower clamping plate and the lower restraint block.

[0012] Based on the above-mentioned embodiments of the present application, the sliding and relative fixation of the upper restraint block relative to the upper clamping plate are realized by opening the first waist-shaped hole and setting the first screw. Similarly, the sliding and relative fixation of the lower restraint block relative to the lower clamping plate are realized by opening the second waist-shaped hole and setting the second screw.

[0013] In some embodiments, the upper restraint block is provided with at least two first waist-shaped holes arranged in parallel with each other, and the upper clamping plate is correspondingly provided with at least two first screws.

[0014] Based on the above-mentioned embodiments of the present application, by arranging at least two first waist-shaped holes on the upper restraint block and arranging the two first waist-shaped holes in parallel in the length direction, when the upper restraint block slides relative to the upper clamping plate, the two first waist-shaped holes can limit the position of the upper restraint block relative to the upper clamping plate, thereby avoiding the displacement of the upper restraint block to a certain extent. Similarly, by arranging at least two second waist-shaped holes on the lower restraint block, the displacement of the lower restraint block relative to the lower clamping plate can also be avoided to a certain extent.

[0015] In some embodiments, the upper restraint block is provided with an upper pressing piece on the side away from the first clamping part, the lower restraint block is provided with a lower pressing piece on the side away from the first clamping part, and the upper pressing piece and the lower pressing piece are arranged opposite to each other. The upper pressing piece and the lower pressing piece cooperate to clamp the lead-out part.

[0016] Based on the above-mentioned embodiments of the present application, the arrangement of the upper pressing piece and the lower pressing piece can further enhance the clamping effect of the second clamping part on the lead-out part, especially the clamping effect on the end of the lead-out part away from the battery cell, thereby making the end of the lead-out part connected to the tab more stable, and further improving the welding quality. At the same time, the arrangement of the upper pressing piece and the lower pressing piece can separate and protect the welding position, avoiding the short circuit of the battery cell caused by the powder generated during welding.

[0017] In some embodiments, the upper pressing piece is provided with a welding port.

[0018] Based on the above-mentioned embodiments of the present application, by forming the welding port on the upper pressing piece, on the one hand, it is convenient for the welding and fixation of the lead-out part and the tab. On the other hand, by limiting the shape and size of the welding port, the shape and size of the welding mark generated during welding can also be limited, thereby improving the welding quality.

[0019] In some embodiments, the tab welding positioning tool further comprises a third clamping part, and the third clamping part comprises a first positioning plate and a second positioning plate, and the first positioning plate and the second positioning plate are arranged on the two sides of the battery cell along a second direction. The second direction corresponds to the length direction of the battery cell.

[0020] Based on the above-mentioned embodiments of the present application, by arranging the first positioning plate and the second positioning plate, the position of the battery cell is limited in the length direction, thereby further improving the positioning effect of the battery cell in cooperation with the upper clamping plate and the lower clamping plate.

[0021] In some embodiments, the first positioning plate and the second positioning plate are located between the upper clamping plate and the lower clamping plate, and the first positioning plate and the second positioning plate are capable of sliding along the lower clamping plate and are capable of being fixed relative to the lower clamping plate.

[0022] Based on the above-mentioned embodiments of the present application, through the above-mentioned arrangement, the first positioning plate and the second positioning plate are capable of sliding, and thus the position of the battery cell can be conveniently adjusted when the battery cell is positioned, and the battery cell can be fixed after being adjusted to a suitable position.

[0023] In some embodiments, the tab welding positioning tool further comprises a fourth clamping portion, the fourth clamping portion comprising a positioning clamping block, the positioning clamping block being arranged between the upper clamping plate and the lower clamping plate, and the battery cell being located between the positioning clamping block and the second clamping portion. The side of the positioning clamping block away from the second clamping portion is provided with an elastic pushing member, and the elastic pushing member is capable of pushing the positioning clamping block to move towards the side close to the second clamping portion.

[0024] Based on the above-mentioned embodiments of the present application, through the arrangement of the positioning clamping block, on the one hand, the positioning effect on the battery cell can be further improved in cooperation with the second clamping portion. On the other hand, the arrangement of the elastic pushing member can reduce the damage to the battery cell while ensuring the positioning, and reduce the welding position deviation.

[0025] According to a second aspect of the present application, a tab welding positioning assembly is provided, the tab welding positioning assembly comprising a tab, a battery cell and the above-mentioned tab welding positioning tool. The battery cell is provided with a lead-out portion at the end portion, the lead-out portion being partially clamped in the second clamping portion and being in sliding connection with the second clamping portion.

[0026] Based on the above-mentioned embodiments of the present application, the tab welding positioning assembly provided by the present application comprises the above-mentioned tab welding positioning tool. Through the above-mentioned arrangement, when the tab of the battery is welded, the end portion of the lead-out portion is driven to move by the sliding of the second clamping portion, and thus the distance between the welding position of the lead-out portion and the tab and the battery cell is adjusted, and the welding quality is improved.

[0027] Other features and advantages of the present application will be described in detail in the following specific embodiments. BRIEF DESCRIPTION OF DRAWINGS

[0028] The accompanying drawings are included to provide a further understanding of the present application, and constitute a part of the specification, and are used together with the following specific embodiments to explain the present application, but do not constitute a limitation on the present application. In the drawings:

[0029] Figure 1 is a structural schematic diagram of the tab welding positioning tool provided by the embodiments of the present application.

[0030] Figure 2 is another structural schematic diagram of the tab welding positioning tool provided by the embodiments of the present application.

[0031] Figure 3 is a structural schematic view of a second clamping part in the tab welding positioning tool provided by the embodiment of the present application.

[0032] Figure 4 is a structural schematic view of a third clamping part and a fourth clamping part in the tab welding positioning tool provided by the embodiment of the present application.

[0033] Figure 5 is a planar schematic view of the third clamping part and the fourth clamping part in the tab welding positioning tool provided by the embodiment of the present application.

[0034] Legend of reference signs

[0035] 1, first clamping part; 11, upper clamping plate; 12, lower clamping plate; 13, compression elbow clamp; 2, second clamping part; 21, upper restraint block; 22, lower restraint block; 23, first waist-shaped hole; 24, first screw; 25, second waist-shaped hole; 26, second screw; 27, upper pressing piece; 28, lower pressing piece; 29, welding port; 3, battery cell; 4, third clamping part; 41, first positioning plate; 42, second positioning plate; 5, fourth clamping part; 51, positioning clamping block; 52, elastic pushing piece; 6, side fixed plate; 61, side movable plate; 7, adapter plate. DETAILED DESCRIPTION

[0036] In order to make the objectives, technical solutions and advantages of the present application clearer, further detailed description will be made to the present application with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present application and are not used to limit the present application.

[0037] In order to make the objectives, technical solutions and advantages of the present application clearer, further detailed description will be made to the present application with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present application and are not used to limit the present application.

[0038] Therefore, the detailed description of the embodiments of the present application provided in the accompanying drawings below is not intended to limit the scope of the claimed present application, but only represents selected embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without making creative efforts fall within the scope of protection of the present application.

[0039] It should be noted that: similar reference numbers and letters represent similar items in the following drawings, therefore, once an item is defined in one drawing, it does not need to be further defined and explained in the subsequent drawings.

[0040] In this application, unless otherwise stated, directional terms such as "first direction," "second direction," and "third direction" are used based on Figure 1 , Figure 2 and Figure 4 The XYZ coordinate system is defined in the text, specifically, the Z direction refers to the first direction, the X direction refers to the second direction, and the Y direction refers to the third direction.

[0041] In the description of this application, it should be noted that, unless otherwise stated, the terms "inner," "outer," etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the product is in use. They are used only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation on this application. In addition, the terms "first," "second," etc., are used only to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0042] In the description of this application, it should also be noted that, unless otherwise expressly specified and limited, the terms "setup" and "connection" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0043] In the prior art, when welding between the battery cell and the electrode, a tooling fixture is usually used to clamp and fix the battery cell, mainly to restrict the movement of the battery cell in the horizontal direction, and then the battery cell and the electrode can be welded together.

[0044] However, in practical use, the above solution can only fix the position of the battery cell, but cannot effectively restrict the position of the tab. This results in a large deviation between the relative positions of the tab and the battery cell, which in turn leads to a large deviation between the solder mark position and the battery cell when welding the battery cell and the tab. This not only affects the welding quality of the tab, but also affects the subsequent assembly and connection process of the battery.

[0045] To address the aforementioned problems in the prior art, according to a first aspect of this application, an embodiment of this application provides a tab welding positioning fixture for clamping the battery cell 3 during welding to the tab (not shown). Reference Figure 1 and Figure 2As shown in the figure, the tab welding positioning tool includes a first clamping part 1 and a second clamping part 2. The first clamping part 1 includes an upper clamping plate 11 and a lower clamping plate 12, which are matched to clamp the battery cell 3 therebetween. The second clamping part 2 is arranged at the side of the first clamping part 1, and can slide relative to the first clamping part 1 in a first direction corresponding to the thickness direction of the battery cell 3 and can be relatively fixed. The battery cell 3 has a lead-out part (not shown) extending therefrom, which is partially clamped in the second clamping part 2 and is in sliding connection with the second clamping part 2.

[0046] Based on the above-mentioned embodiments of the present application, when the battery cell 3 and the tab are welded, the battery cell 3 is clamped between the upper clamping plate 11 and the lower clamping plate 12 to be fixed. At the same time, by arranging the second clamping part 2, the lead-out part at the end of the battery cell 3 is clamped between the second clamping part 2, and when the tab is welded, the tab is welded and fixed at the end away from the battery cell 3. With the sliding of the second clamping part 2 in the first direction, the end of the lead-out part will move together with the second clamping part 2, thereby adjusting the distance between the end of the lead-out part exposed from the second clamping part 2 and the battery cell 3, i.e. adjusting the distance between the welding position of the lead-out part and the battery cell 3.

[0047] At the same time, after the second clamping part 2 moves to the appropriate position in the first direction, it can be relatively locked with the first clamping part 1, at which time the position of the second clamping part 2 is fixed, so that when the same batch of batteries are processed, the distance between the battery cell 3 and the tab welding mark can be controlled at a stable and appropriate distance. Thus, the welding quality of the tab is improved, and the subsequent assembly and connection of the battery are facilitated.

[0048] Specifically, when the battery cell 3 and the tab are welded, the lead-out part is first connected from the end of the battery cell 3. The lead-out part can be made of the same material as the tab, such as an aluminum sheet structure or a nickel sheet structure. At this time, the lead-out part and the tab are both made of flexible material, and the end of the lead-out part away from the battery cell 3 is fixed to the tab by ultrasonic welding or the like. However, in actual welding process, the lead-out part usually needs to be provided with a certain allowance to ensure that the lead-out part and the tab are more stable when connected. However, this also causes the specific position of the welding mark when the lead-out part and the tab are welded to be uncontrollable, thereby affecting the distance between the welding mark and the battery cell 3, and affecting the welding quality and the subsequent connection and assembly of the battery.

[0049] And through the above setting of the application, the lead-out portion is led out from the end of the battery cell 3, and then passes through the middle of the second clamping portion 2, and then the part of the lead-out portion protruding from the second clamping portion 2 is welded with the tab, at this time, the part of the lead-out portion protruding from the second clamping portion 2 is the position of the welding mark, which can be named as the welding end of the lead-out portion. At this time, the length of the welding end of the lead-out portion to the battery cell 3 includes the length of the lead-out portion between the second clamping portion 2 and the length of the lead-out portion between the second clamping portion 2 and the battery cell 3. When the second clamping portion 2 is moved, the length of the lead-out portion between the second clamping portion 2 remains unchanged, but the length of the lead-out portion between the second clamping portion 2 and the battery cell 3 will change accordingly, so as to adjust the distance from the welding mark to the battery cell 3. When the distance is adjusted to the appropriate length, the second clamping portion 2 is fixed, at this time, the distance from the welding mark to the battery cell 3 can be controlled at this length in the subsequent production and processing process. Thus, the welding quality of the battery cells 3 of the same batch is ensured.

[0050] In addition, it should be noted that the above-mentioned battery cell 3 in the application can include a winding core structure formed in a winding manner, or can include a battery cell structure formed in a laminated manner. During specific assembly and connection, adaptive adjustment can be made to the lead-out portion and other structures according to different battery cell structures, which is not limited in the application.

[0051] Further, the clamping and fixing of the upper clamping plate 11 and the lower clamping plate 12 to the battery cell 3 can be realized by any suitable structure. Referring to Figure 1 and Figure 2 In an exemplary embodiment provided by the application, a hinge structure can be arranged at one end of the upper clamping plate 11 and the lower clamping plate 12, at this time, the upper clamping plate 11 can be flipped relative to the lower clamping plate 12 with the hinge as the center, so as to facilitate the placement of the battery cell 3 between the upper clamping plate 11 and the lower clamping plate 12. At the same time, the compression elbow clamp 13 is connected to the upper clamping plate 11, so as to be able to clamp and fix the battery cell 3 after being placed.

[0052] In the application, the second clamping portion 2 can be arranged in any suitable structure.

[0053] Referring to Figures 1 to 3 In an exemplary embodiment provided by the application, the second clamping portion 2 can include an upper restraint block 21 and a lower restraint block 22, the upper restraint block 21 is arranged on the side of the first clamping portion 1 in the first direction, the lower restraint block 22 is arranged on the side of the first clamping portion 1 in the first direction, and the lead-out portion is located between the upper restraint block 21 and the lower restraint block 22.

[0054] Based on the above embodiments of the present application, by specifically providing the second clamping part 2 as a combination of the upper restraining block 21 and the lower restraining block 22, the split setting can facilitate clamping the lead-out part between the upper restraining block 21 and the lower restraining block 22, and can also facilitate adjusting the distance between the upper restraining block 21 and the lower restraining block 22, thereby facilitating adjusting the clamping force of the second clamping part 2 on the lead-out part.

[0055] Specifically, through the above setting, the positions of the upper restraining block 21 and the lower restraining block 22 can be adjusted, so that the adjustable range of the second clamping part 2 as a whole is increased, thereby meeting different adjustment requirements. On the other hand, it can better adapt to different tab sizes and battery sizes, and improve the overall versatility of the tab welding positioning tool.

[0056] Alternatively, in some other embodiments of the present application, the second clamping part 2 can be provided as a U-shaped clamping structure with the opening direction horizontally arranged. The lead-out part is clamped between the U-shaped clamping structures. At the same time, in order to improve the clamping effect of the U-shaped clamping part on the lead-out part, elastic pads can be arranged on the wall surface of the U-shaped structure, and the lead-out part is clamped between the elastic pads, and the clamping effect on the lead-out part is ensured by the elastic effect of the elastic pads themselves.

[0057] In the present application, the sliding of the second clamping part 2 relative to the first clamping part 1 in the first direction can be achieved by any suitable setting mode.

[0058] Further referring to Figure 3 In an exemplary embodiment provided by the present application, the second clamping part 2 is provided as an example of the upper restraining block 21 and the lower restraining block 22. The first waist-shaped hole 23 can be arranged on the upper restraining block 21, the length direction of the first waist-shaped hole 23 is consistent with the first direction, the first screw 24 can be arranged on the upper clamping plate 11, the first screw 24 passes through the first waist-shaped hole 23, and can relatively fix the positions of the upper clamping plate 11 and the upper restraining block 21. The second waist-shaped hole 25 can be arranged on the lower restraining block 22, the length direction of the second waist-shaped hole 25 is consistent with the first direction, the second screw 26 can be arranged on the lower clamping plate 12, the second screw 26 passes through the second waist-shaped hole 25, and can relatively fix the positions of the lower clamping plate 12 and the lower restraining block 22.

[0059] Based on the above embodiments of the present application, the sliding and relative fixation of the upper restraining block 21 relative to the upper clamping plate 11 are achieved by opening the first waist-shaped hole 23 and arranging the first screw 24. Similarly, the sliding and relative fixation of the lower restraining block 22 relative to the lower clamping plate 12 are achieved by opening the second waist-shaped hole 25 and arranging the second screw 26.

[0060] Specifically, when the tab welding positioning tool is used, the first screw 24 and the second screw 26 are both loosened at the beginning, and the upper restraint block 21 and the lower restraint block 22 can slide in the first direction, respectively. After the lead-out portion is clamped between the upper restraint block 21 and the lower restraint block 22, the upper restraint block 21 and the lower restraint block 22 are first clamped to clamp the lead-out portion. Then, the upper restraint block 21 and the lower restraint block 22 are moved together according to the adjustment requirement, and in this process, the lead-out portion slides between the upper restraint block 21 and the lower restraint block 22. Then, when the welding end of the lead-out portion is adjusted to the appropriate position, the positions of the upper restraint block 21 and the lower restraint block 22 are fixed by tightening the first screw 24 and the second screw 26.

[0061] Further, in the subsequent tab welding process, only one of the first screw 24 or the second screw 26 can be loosened, and one of the upper restraint block 21 or the lower restraint block 22 can slide freely, so that the lead-out portion can be clamped between the upper restraint block 21 and the lower restraint block 22. After clamping is completed, the upper restraint block 21 or the lower restraint block 22 can also be easily reset to the original position. Thus, accurate control of the welding position can be achieved in batch processing.

[0062] Reference Figure 3 As shown in FIG. 1, in some embodiments of the present application, at least two first waist-shaped holes 23 can be arranged on the upper restraint block 21, and the first waist-shaped holes 23 are arranged in parallel with each other. Correspondingly, at least two first screws 24 are arranged on the upper clamping plate 11. At least two second waist-shaped holes 25 can also be arranged on the lower restraint block 22, and the second waist-shaped holes 25 are arranged in parallel with each other. Correspondingly, at least two second screws 26 are arranged on the lower clamping plate 12.

[0063] Based on the above-mentioned embodiments of the present application, at least two first waist-shaped holes 23 are arranged on the upper restraint block 21, and the two first waist-shaped holes 23 are arranged in parallel in the length direction. When the upper restraint block 21 slides relative to the upper clamping plate 11, the two first waist-shaped holes 23 can limit each other to a certain extent, thereby avoiding the upper restraint block 21 from deviating during sliding to a certain extent. Similarly, by arranging at least two second waist-shaped holes 25 on the lower restraint block 22, the lower restraint block 22 can also avoid deviating to a certain extent when it slides relative to the lower clamping plate 12.

[0064] Reference Figure 4 As shown in FIG. 1, the upper restraint block 21 is provided with an upper pressing piece 27 on the side away from the first clamping portion 1, and the lower restraint block 22 is provided with a lower pressing piece 28 on the side away from the first clamping portion 1. The upper pressing piece 27 and the lower pressing piece 28 are arranged opposite to each other. The upper pressing piece 27 and the lower pressing piece 28 cooperate to clamp the lead-out portion.

[0065] Based on the above embodiments of the present application, the clamping effect of the second clamping part 2 on the lead-out part can be further enhanced by the upper pressing sheet 27 and the lower pressing sheet 28, especially the clamping effect on the end of the lead-out part away from the battery cell 3, so that the end of the lead-out part connected with the tab is more stable, thereby improving the welding quality. At the same time, the upper pressing sheet 27 and the lower pressing sheet 28 can protect the welding position, avoiding the short circuit of the battery cell 3 caused by the powder generated during welding.

[0066] Further, in some embodiments of the present application, the upper pressing sheet 27 is provided with a welding opening 29.

[0067] Based on the above embodiments of the present application, by forming the welding opening 29 on the upper pressing sheet 27, on the one hand, it is convenient for the welding and fixation of the lead-out part and the tab. On the other hand, by limiting the shape and size of the welding opening 29, the shape and size of the welding mark generated during welding can also be limited, thereby improving the welding quality.

[0068] Specifically, when the lead-out part and the tab are welded, the extended upper pressing sheet 27 and lower pressing sheet 28 can better clamp the welding end of the lead-out part and the tab, thereby avoiding the movement of the two during welding to a certain extent, which affects the welding effect. By the provision of the welding opening 29, the welding can be directly performed at the position of the welding opening 29 to form a welding mark during welding. At this time, the shape and specific position of the welding mark can be effectively controlled, thereby further improving the welding quality of the tab.

[0069] Reference Figure 4 As shown in the above embodiments of the present application, in some embodiments of the present application, the tab welding positioning tool can further include a third clamping part 4. The third clamping part 4 can include a first positioning plate 41 and a second positioning plate 42, which are respectively arranged on both sides of the battery cell 3 along the second direction. The second direction corresponds to the length direction of the battery cell 3.

[0070] Based on the above embodiments of the present application, by the provision of the first positioning plate 41 and the second positioning plate 42, the position of the battery cell 3 is limited from the length direction, thereby further improving the positioning effect on the battery cell 3 in cooperation with the upper clamping plate 11 and the lower clamping plate 12.

[0071] Further, in some embodiments of the present application, the first positioning plate 41 and the second positioning plate 42 are located between the upper clamping plate 11 and the lower clamping plate 12, and the first positioning plate 41 and the second positioning plate 42 can slide along the lower clamping plate 12 and can be fixed relative to the lower clamping plate 12.

[0072] Based on the above embodiments of the present application, through the above arrangement, the first positioning plate 41 and the second positioning plate 42 can slide, and then the position of the battery cell 3 can be adjusted conveniently when the battery cell 3 is positioned, and the battery cell 3 can be fixed after being adjusted to the appropriate position.

[0073] Specifically, after the battery cell 3 is placed on the lower clamping plate 12, by adjusting the positions of the first positioning plate 41 and the second positioning plate 42, on the one hand, the structure of the battery cell 3 of different sizes can be conveniently applied, and on the other hand, the position of the battery cell 3 can be adjusted along the length direction of the battery cell 3, so that the lead-out part and other structures of the battery cell 3 can be better moved to the welding station, thereby further improving the welding quality. At the same time, in the actual production and processing process, the first positioning plate 41 and the second positioning plate 42 can slide relative to the lower clamping plate 12 through any suitable structure, for example, also through the way of setting a waist-shaped hole on the first positioning plate 41 and the second positioning plate 42 and cooperating with a screw, which can be set according to the actual situation, and the present application does not make specific limitation thereto.

[0074] Reference Figure 4 and Figure 5 As shown in the above embodiments of the present application, in some embodiments of the present application, the tab welding positioning tool further comprises a fourth clamping part 5, the fourth clamping part 5 comprises a positioning clamp block 51, the positioning clamp block 51 is arranged between the upper clamping plate 11 and the lower clamping plate 12, and the battery cell 3 is located between the positioning clamp block 51 and the second clamping part 2. The side of the positioning clamp block 51 away from the second clamping part 2 is provided with an elastic pushing piece 52, and the elastic pushing piece 52 can push the positioning clamp block 51 to move towards the side close to the second clamping part 2.

[0075] Based on the above embodiments of the present application, through the arrangement of the positioning clamp block 51, on the one hand, the positioning effect on the battery cell 3 can be further improved in cooperation with the second clamping part 2. On the other hand, the arrangement of the elastic pushing piece 52 can reduce the damage to the battery cell 3 while ensuring the positioning, and reduce the welding position deviation.

[0076] Specifically, in actual application, the direction between the positioning clamp block 51 and the second clamping part 2 is a third direction, which can correspond to the width direction of the battery cell 3. Thus, in cooperation with the above-mentioned first clamping part 1 and third clamping part 4, the battery cell 3 is clamped and fixed from the thickness, length and width directions of the battery cell 3 respectively. The position of the battery cell 3 is more stable during the tab welding, thereby improving the welding quality of the battery cell 3 to a certain extent.

[0077] Further, in the present application, the elastic pushing member 52 can be arranged in any suitable structure. For example, the elastic pushing member 52 can be arranged as a spring, and the positioning clamp block 51 is pushed to move towards the direction of the battery cell 3 by the elastic pushing force or pulling force of the spring. Compared with the pushing mode by screwing or driving by a pneumatic cylinder, the spring pushing mode can play a buffering effect to a certain extent while ensuring stable clamping, so as to avoid damage to the battery cell 3.

[0078] With reference to Figure 1 and Figure 2 In some embodiments of the present application, the tab welding positioning tool can further include a side fixed plate 6 and a side movable plate 61, the side fixed plate 6 is arranged on the lower clamping plate 12, the side movable plate 61 is slidingly connected to the side fixed plate 6 along the first direction, and the upper end of the side movable plate 61 is directly or indirectly connected to the bottom wall of the lower clamping plate 12.

[0079] Based on the above embodiments of the present application, the adjustment of the overall structure of the lower clamping plate 12 and the battery cell 3 in the vertical direction is realized by the arrangement of the side movable plate 61 and the side fixed plate 6, so as to facilitate the use of different working conditions, and further improve the versatility of the overall tab welding positioning tool.

[0080] Further, in some other embodiments of the present application, with reference to Figure 1 In some other embodiments of the present application, the tab welding positioning tool can further include an adapter plate 7, the upper end of the side movable plate 61 is fixedly connected to the adapter plate 7, and the lower clamping plate 12 is slidingly connected to the adapter plate 7, so as to indirectly connect with the side movable plate 61.

[0081] Based on the above embodiments of the present application, by the above arrangement, the adjustable range of the overall structure of the tab welding positioning tool is further expanded, and the versatility is further improved.

[0082] In addition, it should be noted that the tab welding positioning tool in the present application is not limited to the above structure, and other structures can be arranged in actual use to realize the fixation and position adjustment of the battery cell 3 and other structures. The specific arrangement can be made according to the actual working conditions and use requirements, and the present application does not make specific limitation thereto.

[0083] According to the second aspect of the present application, a tab welding positioning assembly is provided, which includes a tab, a battery cell 3 and the above-mentioned tab welding positioning tool. The battery cell 3 is provided with an outgoing portion, the outgoing portion is partially clamped in the second clamping portion 2, and is slidingly connected with the second clamping portion 2.

[0084] Based on the above-mentioned embodiments of the application, the tab welding positioning assembly provided by the application comprises the tab welding positioning tool mentioned above. Through the above-mentioned arrangement, when the tab of the battery is welded, the end of the lead-out part is driven to move through the sliding of the second clamping part 2, and then the distance between the welding mark position of the lead-out part and the tab and the battery cell 3 is adjusted, thereby improving the welding quality.

[0085] The preferred embodiments of the application are described in detail above in combination with the drawings, but the application is not limited to the specific details in the above-mentioned embodiments. Within the technical concept range of the application, various simple modifications can be made to the technical solutions of the application, and these simple modifications all belong to the protection range of the application.

[0086] In addition, it should be noted that each specific technical feature described in the above-mentioned specific embodiments can be combined in any appropriate manner without contradiction. In order to avoid unnecessary repetition, various possible combinations are not described again in the application.

[0087] In addition, various different embodiments of the application can also be combined in any manner, as long as it does not deviate from the idea of the application, and it should also be considered as disclosed in the application.

Claims

1. A tab welding positioning tool for clamping when an electrode and a tab are welded, characterized by, The tab welding positioning tool comprises: A first clamping part comprising an upper clamping plate and a lower clamping plate, the upper clamping plate and the lower clamping plate being matched to clamp the battery cell therebetween; A second clamping part arranged at the side of the first clamping part, the second clamping part being capable of sliding relative to the first clamping part along a first direction corresponding to the thickness direction of the battery cell and being capable of relative fixation; The battery cell has a lead-out part protruding therefrom, the lead-out part being partially clamped in the second clamping part and being in sliding connection with the second clamping part.

2. The tab welding positioning tool according to claim 1, characterized by, The second clamping part comprises an upper restraining block and a lower restraining block, the upper restraining block being arranged at the side of the first clamping part in sliding manner along the first direction, the lower restraining block being arranged at the side of the first clamping part in sliding manner along the first direction, the lead-out part being located between the upper restraining block and the lower restraining block.

3. The tab welding positioning tool of claim 2, wherein The upper restraining block is provided with a first waist-shaped hole, the length direction of the first waist-shaped hole being consistent with the first direction, the upper clamping plate being provided with a first screw, the first screw passing through the first waist-shaped hole and being capable of relatively fixing the positions of the upper clamping plate and the upper restraining block; The lower restraining block is provided with a second waist-shaped hole, the length direction of the second waist-shaped hole being consistent with the first direction, the lower clamping plate being provided with a second screw, the second screw passing through the second waist-shaped hole and being capable of relatively fixing the positions of the lower clamping plate and the lower restraining block.

4. The tab welding positioning tool of claim 3, wherein The upper restraining block is provided with at least two first waist-shaped holes, the first waist-shaped holes being arranged in parallel with each other, the upper clamping plate being correspondingly provided with at least two first screws; The lower restraining block is provided with at least two second waist-shaped holes, the second waist-shaped holes being arranged in parallel with each other, the lower clamping plate being correspondingly provided with at least two second screws.

5. The tab welding positioning tool of claim 2, wherein The upper restraining block is provided with an upper pressing piece on the side thereof away from the first clamping part, the lower restraining block is provided with a lower pressing piece on the side thereof away from the first clamping part, the upper pressing piece and the lower pressing piece being arranged opposite to each other; The upper pressing piece and the lower pressing piece are matched to clamp the lead-out part.

6. The tab welding positioning tool of claim 5, wherein The upper pressing piece is provided with a welding port.

7. The tab welding positioning tool of claim 1, wherein The tab welding positioning tool further comprises a third clamping part, the third clamping part comprising a first positioning plate and a second positioning plate, the first positioning plate and the second positioning plate being arranged at the two sides of the battery cell along a second direction respectively; The second direction corresponds to the length direction of the battery cell.

8. The tab welding positioning tool of claim 7, wherein, The first positioning plate and the second positioning plate are located between the upper clamping plate and the lower clamping plate, and the first positioning plate and the second positioning plate are capable of sliding along the lower clamping plate and are capable of being relatively fixed with the lower clamping plate.

9. The tab welding positioning tool of claim 1, wherein, The tab welding positioning tool further comprises a fourth clamping part, the fourth clamping part comprising a positioning clamping block, the positioning clamping block being arranged between the upper clamping plate and the lower clamping plate, the battery cell being located between the positioning clamping block and the second clamping part; The positioning clamping block is provided with an elastic pushing piece on the side thereof away from the second clamping part, the elastic pushing piece being capable of pushing the positioning clamping block to move towards the side close to the second clamping part.

10. A tab welding positioning assembly, comprising: The tab welding positioning assembly comprises: a tab; a battery cell provided with a lead-out portion at an end thereof; and The tab welding positioning tool according to any one of claims 1-9, wherein the lead-out portion is partially clamped in the second clamping portion and is in sliding connection with the second clamping portion.

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