Battery cell tab lodging device and welding equipment

Abstract

The invention discloses a battery cell tab lodging device and welding equipment, and relates to the technical field of cylindrical battery production equipment. The battery cell tab lodging device comprises a clamping assembly and a lodging assembly, the clamping assembly comprises a battery cell fixing piece, and the battery cell fixing piece is provided with a containing cavity with an opening in one side; the lodging assembly comprises a tab positioning piece and a lodging piece, the tab positioning piece is connected with the battery cell fixing piece, a positioning hole is formed in the side, close to the battery cell fixing piece, of the tab positioning piece, the positioning hole and an opening of the containing cavity are oppositely formed, a plurality of through holes formed at intervals are further formed in the tab positioning piece, and the lodging piece is connected with the tab positioning piece. The through hole is communicated with the positioning hole, the lodging piece comprises a push rod, and the push rod is arranged in the through hole in a sliding mode. According to the battery cell tab lodging device provided by the invention, the difficulty of mounting and positioning the battery cell can be reduced, and the efficiency of lodging the battery cell tab is improved.

Description

Technical Field

[0001] This application relates to the technical field of cylindrical battery production equipment, and particularly relates to a core ear lodging device and a welding device. Background Art

[0002] Lithium batteries with a full-tab structure have the advantages of low internal resistance and high thermal safety, and are currently widely used in fields such as drones, robots, and electric vehicles.

[0003] During the laser process of the current collector plate of a vertical full-tab structure lithium battery, the laser will weld the current collector plate and the tab along the blank area of the electrode sheet. However, there is a gap between the electrode sheet and the separator, and the light leakage through the gap causes the laser to penetrate and burn the separator, leading to technical problems such as high internal resistance of the wound core and battery short circuit. By lodging the core ear, a surface contact is formed between the current collector plate and the tab, improving the welding effect.

[0004] The operation of the core ear lodging device in the related art is inconvenient, reducing the efficiency of core ear lodging. Summary of the Invention

[0005] In view of this, this application provides a core ear lodging device and a welding device, aiming to solve one of the technical problems in the prior art.

[0006] To achieve the above object, the technical solution adopted in this application is as follows:

[0007] In a first aspect, an embodiment of this application provides a core ear lodging device, including:

[0008] A clamping assembly, including a core fixing member, and the core fixing member has a receiving cavity with an opening on one side;

[0009] A lodging assembly, including an ear positioning member and a lodging member. The ear positioning member is connected to the core fixing member. A positioning hole is provided on the side of the ear positioning member close to the core fixing member, and the positioning hole is disposed opposite to the opening of the receiving cavity. A plurality of through holes are also provided on the ear positioning member at intervals, and the through holes communicate with the positioning hole. The lodging member includes a push rod, and the push rod is slidably disposed in the through hole.

[0010] In one of the embodiments of the first aspect, the lodging member further includes a first connecting portion and a second connecting portion. The lodging member is provided with an overlapping hole passing through the first connecting portion and the second connecting portion. The push rod passes through the overlapping hole and is fixedly connected to the first connecting portion. The push rod includes a rod body exposed outside the overlapping hole.

[0011] In one embodiment of the first aspect, in the longitudinal direction of the push rod, the second connecting portion is movably connected to the push rod, and the second connecting portion moves in a direction close to or away from the first connecting portion to lengthen or shorten the length of the rod body.

[0012] In one embodiment of the first aspect, the axial directions of the through hole and the positioning hole are both parallel to the axial direction of the accommodating cavity. The through hole extends in the radial direction of the opening, and a plurality of the through holes are distributed at intervals in the circumferential direction of the opening.

[0013] In one embodiment of the first aspect, the through hole has a first hole body and a second hole body. The first hole body communicates with the positioning hole. When the rod body is located in the first hole body, at least a part of the rod body is located in the positioning hole.

[0014] In one embodiment of the first aspect, the length of the through hole in the radial direction of the opening is L1, the radius of the opening is L2, and the width of the rod body inserted into the through hole is L3, satisfying: L1 > L2 + L3.

[0015] In one embodiment of the first aspect, the rod body penetrates into the through hole from the second hole body of the through hole and moves toward the first hole body of the through hole. The depth of the rod body penetrating into the positioning hole is L4, satisfying: L4 ≥ 0.5 mm.

[0016] In one embodiment of the first aspect, the battery cell fixing member includes a first clamping block and a second clamping block that are detachably connected, and the accommodating cavity is formed at the connection between the first clamping block and the second clamping block.

[0017] In one embodiment of the first aspect, the clamping assembly further includes a fixed substrate, a driving member and a limiting member that are spaced apart on the fixed substrate. The battery cell fixing member is disposed between the driving member and the limiting member. The output end of the driving member extends out to connect the second clamping block to the first clamping block and presses the first clamping block against the limiting member.

[0018] In a second aspect, an embodiment of the present application further provides a battery cell pole ear welding device, including the battery cell pole ear lodging device in any of the above embodiments.

[0019] Compared with the prior art, the beneficial effects of the present application are as follows: The present application provides a cell tab lodging device, which includes a clamping assembly and a lodging assembly. The clamping assembly includes a cell fixing member having a receiving cavity with an opening on one side. The lodging assembly includes a tab positioning member and a lodging member. The tab positioning member is connected to the cell fixing member. A positioning hole is provided on the side of the tab positioning member close to the cell fixing member. The positioning hole is disposed opposite to the opening of the receiving cavity. A plurality of through holes are spaced apart from each other on the tab positioning member, and the through holes communicate with the positioning hole. The lodging member includes a push rod slidably disposed in the through holes. When the push rod slides in the through holes, it can contact the tabs and cause the tabs to lodge. Unlike the prior art, it is not necessary to insert each tab into a corresponding through hole, which greatly reduces the difficulty of cell installation and positioning and also improves the efficiency of cell tab lodging.

[0020] In addition, when the push rod slides in the through holes in a specific direction, the lodging operation of the tabs can be completed, and the operation difficulty is small. By sliding the push rod in a specific direction in a plurality of through holes, each tab of the cell is lodged, and the structure of the lodged tabs meets the design requirements, improving the production efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the following will briefly introduce the drawings required for the embodiments. It should be understood that the following drawings only show some embodiments of the present application and should not be regarded as limiting the scope. For those of ordinary skill in the art, other related drawings can be obtained based on these drawings without creative efforts.

[0022] Figure 1 shows a schematic structural diagram of a cell tab lodging device in some embodiments of the present application;

[0023] Figure 2 shows Figure 1 the exploded structural diagram of the cell tab lodging device in;

[0024] Figure 3 shows a schematic structural diagram of the lodging assembly in some embodiments of the present application;

[0025] Figure 4 shows Figure 3 the exploded structural diagram of the lodging assembly in;

[0026] Figure 5 shows a schematic cross-sectional structural diagram of the lodging assembly and the cell fixing member in some embodiments of the present application.

[0027] MAIN ELEMENT SYMBOL DESCRIPTION: 100 - cell tab lodging device; 200 - cell

[0028] 110 - Clamping assembly; 111 - Battery cell fixing member; 1112 - Opening; 1111 - Accommodating cavity; 1113 - First clamping block; 1114 - Second clamping block; 11131 - Positioning groove; 112 - Fixed substrate; 113 - Driving member; 114 - Limiting member;

[0029] 120 - Toppling component; 121 - Tab positioning member; 1211 - Positioning hole; 1212 - Through hole; 122 - Toppling member; 1221 - First connecting portion; 1222 - Second connecting portion; 1223 - Stacked hole; 1224 - Push rod; 12241 - Rod body; 12121 - First hole body; 12122 - Second hole body; 1225 - Spring. Detailed implementation manners

[0030] The embodiments of the present application will be described in detail below. The examples of the embodiments are shown in the accompanying drawings, where the same or similar reference numerals denote the same or similar elements or elements with the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present application and should not be construed as a limitation to the present application.

[0031] In the description of the present application, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as a limitation to the present application.

[0032] In addition, the terms "first" and "second" are only used for descriptive purposes and should not be construed as indicating or implying relative importance or implicitly specifying the number of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include one or more of such features. In the description of the present application, "a plurality" means two or more unless otherwise specifically defined.

[0033] In this application, unless otherwise clearly defined and limited, terms such as "installation", "connection", "linkage", "fixation" shall be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral one; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, and it can be the communication inside two components or the interaction relationship between two components. For those of ordinary skill in the art, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0034] In this application, unless otherwise clearly defined and limited, the first feature being "on" or "under" the second feature can be that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, the first feature being "above", "over" and "on top of" the second feature can be that the first feature is directly above or obliquely above the second feature, or simply means that the first feature has a higher horizontal height than the second feature. The first feature being "under", "beneath" and "underneath" the second feature can be that the first feature is directly below or obliquely below the second feature, or simply means that the first feature has a lower horizontal height than the second feature.

[0035] The tabs of the vertical full-tab structure battery cell are vertically led out from the top or bottom of the battery cell, and laser welding is used to connect the positive and negative materials to the current collector respectively. Usually, the laser will weld the current collector and the tab along the blank area of the electrode tab, but there is a gap between the electrode tab and the separator, and the light leakage of the gap causes the laser to penetrate and burn the separator, resulting in the technical problems of large internal resistance of the wound core and the risk of battery short circuit. By making the tabs of the battery cell fall down, a surface contact is formed between the current collecting plate and the tab, improving the welding effect.

[0036] In the tab falling-down device of the battery cell in the related art, each tab of the battery cell needs to pass through the through hole on the disk for falling down correspondingly, and then each tab is pressed into the groove arranged on the disk one by one, so that the tab falls down in the designed manner. Such tab falling-down operation is complex and not conducive to improving the efficiency of tab falling-down.

[0037] In view of the above problems, as Figure 1 shown, this application provides a tab falling-down device 100 for a battery cell, which is mainly used for falling down the tabs of a vertical full-tab structure battery cell. The tab falling-down device 100 for a battery cell includes a clamping assembly 110 and a falling-down assembly 120.

[0038] Among them, the clamping assembly 110 includes a battery cell fixing member 111, and the battery cell fixing member 111 has a receiving cavity 1111 with an opening 1112 on one side.

[0039] As Figure 1 and Figure 2As shown, the accommodation cavity 1111 is used to place the battery cell 200. The accommodation cavity 1111 is cylindrical. When the battery cell 200 is placed in the accommodation cavity 1111, the tabs of the battery cell 200 protrude from the opening 1112.

[0040] Since the tabs of the vertical full-tab structure battery cell 200 are vertically led out from the top or bottom of the battery cell 200, the top or bottom end of the battery cell 200 is arranged at the opening 1112.

[0041] In some embodiments, the accommodation cavity 1111 has two openings 1112, so that the top and bottom of the battery cell 200 are respectively arranged at different openings 1112, and the number of openings 1112 of the accommodation cavity 1111 can be designed according to actual requirements.

[0042] The lodging assembly 120 includes a tab positioning member 121 and a lodging member 122. The tab positioning member 121 is connected to the battery cell fixing member 111. A positioning hole 1211 is provided on the side of the tab positioning member 121 close to the battery cell fixing member 111, and the positioning hole 1211 is arranged opposite to the opening 1112 of the accommodation cavity 1111.

[0043] In one embodiment, as Figure 1 and Figure 2 shown, a positioning pin is provided on the tab positioning member 121, and a corresponding positioning hole 1211 is provided on the battery cell fixing member 111. Through the pin-hole cooperation, the connection between the tab positioning member 121 and the battery cell fixing member 111 is realized.

[0044] It should be noted that the tab positioning member 121 is in a plate shape, and the positioning hole 1211 is a counterbore provided on the surface of the tab positioning member 121. As Figure 1 and Figure 2 shown, the shape of the positioning hole 1211 is the same as that of the opening 1112, both being circular. The positioning hole 1211 and the opening 1112 are concentrically arranged, and the size of the positioning hole 1211 is larger than that of the opening 1112, which is convenient for adjusting the position of the tab.

[0045] When the tab fixing member is connected to the battery cell fixing member 111, the tab of the battery cell 200 is located in the positioning hole 1211, and the end of the tab just touches the bottom of the positioning hole 1211 or leaves a very short distance, preventing the end of the tab from being squeezed and deformed by the bottom surface of the positioning hole 1211.

[0046] In addition, the tabs of the battery cell 200 are arc-shaped and are circumferentially spaced apart along the battery cell 200. When the battery cell 200 is inserted into the receiving groove, the positions of the tabs of the battery cell 200 intersect with the positions of the through holes 1212, so that when the push rod 1224 slides in the through holes 1212, it can contact the tabs and make the tabs fall down. Unlike the prior art, it is not necessary to insert each tab into the corresponding through hole 1212, which greatly reduces the difficulty of installing and positioning the battery cell 200 and also improves the efficiency of the tabs of the battery cell 200 falling down.

[0047] A plurality of spaced-apart through holes 1212 are further formed in the tab positioning member 121. The through holes 1212 communicate with the positioning holes 1211. The falling-down member 122 includes a push rod 1224 which is slidably disposed in the through holes 1212. When the push rod 1224 slides in the through holes 1212 in a specific direction, the operation of making the tabs fall down can be completed, and the operation difficulty is small. In addition, by making the push rod 1224 slide in a specific direction in a plurality of through holes 1212, each tab of the battery cell 200 is made to fall down, and the structure of the tabs after falling down meets the design requirements, thereby improving the production efficiency.

[0048] In some embodiments, the falling-down member 122 further includes a first connecting portion 1221 and a second connecting portion 1222. The falling-down member 122 is provided with an overlapping hole 1223 passing through the first connecting portion 1221 and the second connecting portion 1222. The push rod 1224 passes through the overlapping hole 1223 and is fixedly connected to the first connecting portion 1221. The push rod 1224 includes a rod body 12241 exposed from the overlapping hole 1223.

[0049] As Figure 3 and Figure 4 shown, the shapes of the first connecting portion 1221 and the second connecting portion 1222 are plate-shaped.

[0050] It should be noted that the shapes of the first connecting portion 1221 and the second connecting portion 1222 are not particularly limited. When manual operation is adopted, the first connecting portion 1221 and the second connecting portion 1222 serve as the parts to be held. Manually move the first connecting portion 1221 and the second connecting portion 1222 to make the push rod 1224 slide in the through holes 1212.

[0051] When mechanical operation is adopted, a connecting hole is formed in the first connecting portion 1221 to connect the first connecting portion 1221 with an external movable device. The external device moves the first connecting portion 1221 and the second connecting portion 1222 to make the push rod 1224 slide in the through holes 1212.

[0052] The cross-sectional shape of the push rod 1224 is the same as the cross-sectional shape of the through hole 1212, which is convenient for inserting the push rod 1224 into the through hole 1212. A part of the push rod 1224 is hidden in the overlapping hole 1223, and the rod body 12241 is partially exposed from the overlapping hole 1223.

[0053] In the ear toppling device of the related art in the prior art, each ear of the battery cell needs to pass through the through holes on the disk for toppling, and then each ear is pressed into the grooves provided on the disk one by one. Such an operation fixes the ear toppling parameters and cannot be adjusted as required.

[0054] In view of the above problems, in some embodiments, in the length direction of the push rod 1224, the second connecting portion 1222 is movably connected to the push rod 1224, and the second connecting portion 1222 moves in a direction close to or away from the first connecting portion 1221 to lengthen or shorten the length of the rod body 12241.

[0055] As Figure 3 and Figure 4 shown, the first connecting portion 1221 and the second connecting portion 1222 are arranged at intervals in the length direction of the push rod 1224.

[0056] In one embodiment, by arranging a spring 1225 between the first connecting portion 1221 and the second connecting portion 1222, the second connecting portion 1222 moves in a direction close to or away from the first connecting portion 1221 to lengthen or shorten the length of the rod body 12241.

[0057] When the rod body 12241 is inserted into the through hole 1212, the rod body 12241 completely enters the through hole 1212, so that the second movable portion contacts the surface of the ear positioning member 121. The second sliding portion slides on the surface of the ear positioning member 121 to make the toppling parameters of each ear uniform.

[0058] When it is necessary to adjust the toppling parameters of the ears (such as the toppling length), by compressing or loosening the spring 1225, the length of the rod body 12241 is adjusted, and the purpose of adjusting the toppling length of the ears can be achieved according to the requirements.

[0059] In some embodiments, the axial direction of the through hole 1212 and the axial direction of the positioning hole 1211 are both parallel to the axial direction of the accommodation cavity 1111, the through hole 1212 extends along the radial direction of the opening 1112, and a plurality of through holes 1212 are distributed at intervals in the circumferential direction of the opening 1112.

[0060] As Figure 3 shown, the axial direction of the through hole 1212 and the axial direction of the positioning hole 1211 are both parallel to the axial direction of the accommodation cavity 1111, so that the rod body 12241 is parallel to the direction of the ears, increasing the contact area between the ears and the rod body 12241, and enabling the ears to be toppled repeatedly under the thrust of the push rod 1224.

[0061] It should be noted that the surface of the rod body 12241 is an arc surface to prevent the rod body 12241 from damaging the ear structure and reducing the quality of the battery cell 200.

[0062] The extended shape of the through hole 1212 is defined to coincide with the sliding trajectory of the rod body 12241.

[0063] The arrangement, quantity, and spacing of the multiple through holes 1212 are adapted to the distribution of the positive and negative tabs of the battery cell 200. Additionally, for battery cells 200 of different models, the tab positioning member 121 with different arrangements of the through holes 1212 is manufactured. In this way, when bending the tabs of battery cells 200 of different models, only the tab positioning member 121 needs to be replaced, without replacing other parts of the tab bending device, reducing costs.

[0064] As Figure 2 and Figure 3 shown, the centers of the multiple through holes 1212 are located on the axis of the positioning hole 1211, and the ends of each through hole 1212 are arranged close to the axis of the positioning hole 1211. In this way, each tab located at the top or bottom of the battery cell 200 can contact the rod body 12241 for bending.

[0065] In some embodiments, the through hole 1212 has a first hole body 12121 and a second hole body 12122. The first hole body 12121 communicates with the positioning hole 1211. When the rod body 12241 is located in the first hole body 12121, at least part of the rod body 12241 is located within the positioning hole 1211. The rod body 12241 penetrates into the through hole 1212 from the second hole body 12122 of the through hole 1212 and moves towards the first hole body 12121.

[0066] The rod body 12241 penetrates into the through hole 1212 from the second hole body 12122 of the through hole 1212, so that the insertion position of the rod body 12241 is located outside the battery cell 200, avoiding random insertion and damaging the tabs. The push rod 1224 slides in each through hole 1212 from the second hole body 12122 towards the first hole body 12121, making the bending direction of each tab consistent. After the bending operation is completed, the tabs are welded to the current collector plate.

[0067] In some embodiments, referring to Figure 3 and Figure 5 , the length of the through hole 1212 along the radial direction of the opening 1112 is L1, the radius of the opening 1112 is L2, and the width of the rod body 12241 inserted into the through hole 1212 is L3, satisfying: L1 > L2 + L3. In this way, the initial insertion position of the rod body 12241 can be located outside the battery cell 200, avoiding random insertion and damaging the tabs.

[0068] In some embodiments, referring to Figure 3 and Figure 5, when the rod body 12241 is located in the first hole body 12121, the penetration depth of the rod body 12241 into the positioning hole 1211 is L4, satisfying: L4 ≥ 0.5 mm. In this way, the rod body 12241 can contact the tab to a certain depth, enabling the push rod 1224 to complete the tab toppling operation.

[0069] In some embodiments, the battery cell fixing member 111 includes a first clamping block 1113 and a second clamping block 1114 that are detachably connected, and a receiving cavity 1111 is formed at the connection between the first clamping block 1113 and the second clamping block 1114.

[0070] As Figure 1 and Figure 2 shown, in one embodiment, both the first clamping block 1113 and the second clamping block 1114 are in the shape of a cuboid, and semi-cylindrical grooves are formed at the connections of the first clamping block 1113 and the second clamping block 1114. Such a splicing structure enables the battery cell fixing member 111 to be applicable to fixing more models of battery cells 200, making the battery cell fixing member 111 more practical.

[0071] In one embodiment, as Figure 2 shown, the first clamping block 1113 and the second clamping block 1114 are positioned and connected by a pin hole fit connection method through a through hole 1212, and the pin holes are respectively arranged on the mutually connected surfaces of the first clamping block 1113 and the second clamping block 1114.

[0072] In one embodiment, the receiving cavity 1111 can also be formed by directly opening a cylindrical groove on the cuboid, which is convenient for processing.

[0073] In some embodiments, the clamping assembly 110 further includes a fixed substrate 112, and a driving member 113 and a limiting member 114 that are spaced apart on the fixed substrate 112. The battery cell fixing member 111 is arranged between the driving member 113 and the limiting member 114. The output end of the driving member 113 extends out to connect the second clamping block 1114 to the first clamping block 1113 and presses the first clamping block 1113 against the limiting member 114.

[0074] In one embodiment, as Figure 1 and Figure 2 shown, a positioning groove 11131 is formed on one side of the first clamping block 1113 away from the semi-cylindrical groove. The limiting member 114 is in the shape of a plate, and the positioning member is embedded in the positioning groove 11131 to achieve the positioning and fixing of the battery cell fixing member 111. The limiting member 114 cooperates with the driving member 113 to fix the battery cell fixing member 111.

[0075] In other embodiments, two driving members 113 may be provided. The output ends of the two driving members 113 are arranged oppositely. One driving member 113 is used to limit the first clamping block 1113, and the other driving member 113 is used to limit the second clamping block 1114, so as to close and fix the first clamping block 1113 and the second clamping block 1114 to fix the battery cell 200.

[0076] In one embodiment, the driving member 113 adopts a manual push rod 1224. A rubber block is provided at the output end of the manual push rod 1224 and abuts against the surface of the second clamping block 1114.

[0077] It should be noted that the fixed substrate 112 can be fixed on an external device along the horizontal, vertical or other directions. The driving member 113 can also adopt a pneumatic push rod 1224, an electric push rod 1224 or a hydraulic push rod 1224.

[0078] The operation process of the battery cell tab falling device 100 is as follows:

[0079] Put the wound battery cell 200 on the semi-cylindrical groove of the first clamping block 1113, connect the tab positioning member 121 with the first clamping block 1113, make the tabs of the battery cell 200 exposed, and the end of the tab contacts the bottom surface of the positioning hole 1211. Then assemble the second clamping block 1114 on the first clamping block 1113.

[0080] Operate the manual push rod 1224 to make the limiting member 114 embed into the positioning groove 11131, so that the battery cell fixing member 111 is fixed;

[0081] Flip the battery cell fixing member 111 to make the tab positioning member 121 face upward. Then, insert the push rod 1224 of the falling component 120 into the through hole 1212. The push rod 1224 inserts from the second hole body 12122 of each through hole 1212, that is, the initial insertion position of the push rod 1224 is outside the battery cell 200;

[0082] Slide the push rod 1224 from the second hole body 12122 of the through hole 1212 to the first hole body 12121. The sliding directions of the push rod 1224 in each through hole 1212 are the same, so that the falling directions of each tab are the same, and the tabs at the top or bottom of the battery cell 200 are fallen;

[0083] Flip the battery cell 200, repeat the previous falling steps, complete the falling of the tabs at the bottom or top of the battery cell 200, and then weld the tabs to the current collector plate. The falling and welding of a single battery cell 200 are completed.

[0084] In this application, a battery cell tab welding device is further provided, which includes the battery cell tab falling device 100 in any of the above embodiments. Therefore, it has all the beneficial effects of the battery cell tab falling device 100 in any of the above embodiments, and will not be elaborated here one by one.

[0085] In the description of this specification, the descriptions referring to terms such as "one embodiment", "some embodiments", "examples", "specific examples", or "some examples", etc., mean that the specific features, structures, materials, or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of this application. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described can be combined in a suitable manner in any one or more embodiments or examples. In addition, without contradiction, those skilled in the art can combine and combine the different embodiments or examples described in this specification and the features of different embodiments or examples.

[0086] Although the embodiments of this application have been shown and described above, it can be understood that the above embodiments are exemplary and should not be construed as limiting this application. Those of ordinary skill in the art can make changes, modifications, substitutions, and variations to the above embodiments within the scope of this application.

Claims

1. A battery cell tab lodging device, characterized in that: include: The clamping assembly comprises a battery cell fixing member, wherein the battery cell fixing member has a receiving cavity with an opening on one side; A lodging component includes a pole lug positioning member and a lodging member, wherein the pole lug positioning member is connected to the battery cell fixing member, a positioning hole is provided on the side of the pole lug positioning member close to the battery cell fixing member, the positioning hole is arranged opposite to the opening of the accommodating cavity, a plurality of through holes arranged at intervals are also provided on the pole lug positioning member, the through holes are connected to the positioning holes, and the lodging member includes a push rod, which is slidably arranged in the through hole.

2. The battery cell tab lodging device according to claim 1, characterized in that: The falling member also includes a first connecting portion and a second connecting portion. The falling member is provided with overlapping holes penetrating the first connecting portion and the second connecting portion. The push rod is penetrated through the overlapping holes and fixedly connected to the first connecting portion. The push rod includes a rod body exposed in the overlapping holes.

3. The battery cell tab lodging device according to claim 2, characterized in that: The second connection portion is movably connected to the push rod in the length direction of the push rod, and the second connection portion moves in a direction approaching or away from the first connection portion to lengthen or shorten the length of the rod body.

4. The battery cell tab lodging device according to claim 2, characterized in that: The axial direction of the through hole and the axial direction of the positioning hole are both parallel to the axial direction of the accommodating cavity, the through hole extends in the radial direction of the opening, and a plurality of the through holes are distributed at intervals along the circumferential direction of the opening.

5. The battery cell tab lodging device according to claim 2, characterized in that: The through hole has a first hole body and a second hole body, the first hole body is communicated with the positioning hole, and when the rod body is located in the first hole body, the rod body is at least partially located in the positioning hole.

6. The battery cell tab lodging device according to claim 5, characterized in that: The length of the through hole along the radial direction of the opening is L1, the radius of the opening is L2, and the width of the rod body inserted into the through hole is L3, satisfying: L1>L2+L3.

7. The battery cell tab lodging device according to claim 6, characterized in that: The rod body penetrates into the through hole from the second hole body of the through hole and moves toward the first hole body of the through hole. The depth of the rod body penetrating into the positioning hole is L4, which satisfies: L4≥0.5mm.

8. The battery cell tab lodging device according to any one of claims 1 to 7, characterized in that: The battery cell fixing member comprises a first clamping block and a second clamping block which are detachably connected, and the connection between the first clamping block and the second clamping block forms the accommodating cavity.

9. The battery cell tab lodging device according to claim 8, characterized in that: The clamping assembly also includes a fixed base plate, and a driving member and a limiting member spaced apart from the fixed base plate, the battery cell fixing member is arranged between the driving member and the limiting member, and the output end of the driving member extends to connect the second clamping block to the first clamping block, and the first clamping block is pressed against the limiting member.

10. A battery cell tab welding device, characterized in that: A battery cell tab protrusion device comprising the battery cell tab protrusion device according to any one of claims 1 to 9.

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