Battery positive electrode cover group welding device

Abstract

The utility model belongs to the technical field of battery manufacturing, and discloses a battery anode cover group welding device. The welding device comprises a rotary driving part, a bearing part and at least two welding mechanisms, and the bearing part is connected to the output end of the rotary driving part; the at least two welding mechanisms are evenly distributed on the bearing part in the circumferential direction, each welding mechanism comprises a jig assembly and a pressing-down driving assembly, each jig assembly comprises a roll core jig and a cover set jig which are arranged side by side in the first direction, a first containing groove is formed in each roll core jig, and a corresponding second containing groove is formed in each cover set jig; one end, facing the cover group jig, of the first accommodating groove is provided with an opening, the downward pressing driving part is mounted on the bearing part, the downward pressing part is connected to the output end of the downward pressing driving part, a penetrating hole is formed in the downward pressing part, and the downward pressing driving part can drive the downward pressing part to perform downward pressing so that the positive plate and the positive cover group can be pressed tightly. The battery positive electrode cover group welding device can improve the welding efficiency of the positive electrode plate and the positive electrode cover group, and can adapt to roll cores with different lengths without adjusting the position of a jig.

Description

TECHNICAL FIELD

[0001] The utility model relates to battery manufacturing technical field especially relates to a battery positive cover group welding device. BACKGROUND

[0002] The one end of the roll core protrudes the positive sheet, and the positive sheet needs to be welded with the cover group, in the prior art, after welding, it needs to be discharged to carry out subsequent processing, such as the assembly of the battery shell, in the discharging process, the welding device stops working, after discharging, it is carried out again, in this process, the welding efficiency is reduced. At the same time, for the roll core of different lengths, different jigs need to be replaced, or the position of the jig is adjusted to carry out adaptability change, and the operation is more troublesome.

[0003] Therefore, it is urgent to design a battery positive cover group welding device to solve the above problems. UTILITY MODEL CONTENTS

[0004] The utility model discloses a battery positive cover group welding device can improve the welding efficiency of the positive sheet and the positive cover group, and the roll core of different lengths can be adapted without adjusting the position of the jig.

[0005] In order to achieve this purpose, the utility model adopts the following technical scheme:

[0006] The battery positive cover group welding device comprises:

[0007] The rotating driving part can output the rotating motion with the vertical direction as the shaft, and the bearing part is connected to the output end of the rotating driving part;

[0008] At least two welding mechanisms are uniformly distributed on the bearing part with the rotating shaft of the bearing part as the center, the welding mechanism comprises a jig assembly and a pressing driving assembly, the jig assembly comprises a roll core jig and a cover group jig which are installed on the bearing part and arranged side by side along the first direction, a first accommodating groove is formed in the roll core jig, a second accommodating groove corresponding to the first accommodating groove is formed in the cover group jig, the second accommodating groove is used for accommodating the positive cover group, the first accommodating groove is used for accommodating the horizontally placed roll core, so that the positive sheet connected with the roll core is overlapped with the positive cover group, one end of the first accommodating groove is provided with an opening towards the cover group jig, the pressing driving assembly comprises a pressing driving part and a pressing part, the pressing driving part is installed on the bearing part and located on one side of the jig assembly, the pressing part is connected to the output end of the pressing driving part, the pressing part is provided with a through hole, the through hole is arranged above the second accommodating groove and corresponds to the second accommodating groove one by one, and the pressing driving part can drive the pressing part to press down, so that the positive sheet and the positive cover group are pressed tightly; the first direction is towards the rotating shaft of the bearing part and perpendicular to the vertical direction.

[0009] As an optional solution, two welding mechanisms are provided, and the carrier extends along the first direction, and the two welding mechanisms are symmetrically arranged about the center line of the carrier.

[0010] As an optional solution, the position of the winding core jig relative to the carrier is adjustable in the first direction.

[0011] As an optional solution, two long holes are formed in the winding core jig, the long holes extend along the first direction and are spaced apart along the second direction, the first direction, the second direction, and the first direction are perpendicular to each other, and the locking member is threadedly connected with the carrier through the long holes.

[0012] As an optional solution, the first accommodating groove is provided with at least two, and the second accommodating groove and the through hole are one-to-one corresponding to the first accommodating groove.

[0013] As an optional solution, the winding core jig comprises a first body and a first insert, the first body is connected with the carrier, the first insert is detachably connected with the first body, and the first accommodating groove is formed in the first insert; and / or

[0014] The cover group jig comprises a second body and a second insert, the second body is connected with the carrier, the second insert is detachably connected with the second body, and the second accommodating groove is formed in the second insert.

[0015] As an optional solution, the first body is provided with a first mounting groove, and the first insert is embedded in the first mounting groove; and / or

[0016] The second body is provided with a second mounting groove, and the second insert is embedded in the second mounting groove.

[0017] As an optional solution, the first body is provided with a first ejector pin, the first insert is provided with a first insertion hole, and the free end of the ejector pin extends into the first mounting groove and can be inserted into the first insertion hole; and / or

[0018] The second body is provided with a second ejector pin, the second insert is provided with a second insertion hole, and the free end of the second ejector pin extends into the second mounting groove and can be inserted into the second insertion hole.

[0019] As an optional solution, the pressing member comprises:

[0020] A connecting portion extends along the vertical direction, and the connecting portion is connected with the output end of the pressing driving member;

[0021] The pressing part is perpendicularly connected to the connecting part, and a through hole is provided on the pressing part.

[0022] As an alternative, a base assembly is also included, which includes a base plate and two lifting members mounted on the base plate, with the rotation drive member mounted on top of the two lifting members.

[0023] The beneficial effects of this utility model are as follows:

[0024] This utility model provides a battery positive electrode cover assembly welding device. Before welding, the winding core is placed in the first receiving groove, and the positive electrode cover assembly is placed in the second receiving groove. At this time, the positive electrode sheet overlaps the positive electrode cover assembly. The pressing drive moves downwards to press the positive electrode sheet and the positive electrode cover assembly together. At this time, the through hole is aligned with the position to be welded, and the laser of the welding torch passes through the through hole to press the positive electrode sheet and the positive electrode cover assembly together. During the welding process, simultaneously, another welding mechanism completes welding during the welding time. The loading or unloading of the core and positive electrode cover assembly is achieved by rotating the rotating drive component, which moves the welding mechanism after loading to below the welding gun for continuous welding, thus shortening the welding downtime and improving welding efficiency. The first receiving groove is set to be open at one end, and the core fixture and cover assembly fixture are set at intervals. The gap between the two can serve as an adaptable space for the core length. When the core length changes, the core fixture can still be used for positioning without changing the position of the core fixture to accommodate cores of different lengths. Attached Figure Description

[0025] Figure 1 This is a schematic diagram of the structure of the battery positive electrode cover welding device provided in this embodiment of the utility model;

[0026] Figure 2 This is an exploded view of the battery positive electrode cover welding device provided in this embodiment of the utility model.

[0027] In the picture:

[0028] 10. Rotary drive component; 20. Bearing component;

[0029] 30. Welding mechanism; 31. Fixture assembly; 311. Core rolling fixture; 3111. First receiving groove; 3112. Elongated hole; 3113. Countersink; 312. Cover assembly fixture; 3121. Second receiving groove; 32. Pressing drive assembly; 321. Pressing drive component; 322. Pressing component; 3221. Connecting part; 3222. Pressing part; 32221. Through hole;

[0030] 40. Base assembly; 41. Base plate; 42. Lifting component;

[0031] 210. Core; 220. Positive electrode sheet; 230. Positive electrode cap assembly. DETAILED DESCRIPTION

[0032] The utility model will be described in further detail below in combination with the drawings and embodiments. It can be understood that the specific embodiments described herein are only used to explain the utility model, and not limit the utility model. In addition, it should be noted that, in order to facilitate the description, only the part related to the utility model is shown in the drawings, not all structures.

[0033] In the description of the utility model, unless otherwise explicitly specified and limited, the terms "connected", "connected", "fixed" should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or it can be integrated, it can be mechanically connected, or it can be electrically connected, it can be directly connected, or it can be indirectly connected through an intermediate medium, it can be the internal communication of two elements or the interaction relationship of two elements. For ordinary skilled in the art, the specific meaning of the above terms in the utility model can be understood according to the specific circumstances.

[0034] In the utility model, unless otherwise explicitly specified and limited, the first feature "on" or "below" the second feature can include that the first and second features are in direct contact, or the first and second features are not in direct contact but are in contact through another feature between them. Moreover, the first feature "on", "above" and "above" the second feature includes that the first feature is directly above and obliquely above the second feature, or only indicates that the horizontal height of the first feature is higher than that of the second feature. The first feature "below", "below" and "below" the second feature includes that the first feature is directly below and obliquely below the second feature, or only indicates that the horizontal height of the first feature is less than that of the second feature.

[0035] In the description of the embodiment, the terms "up", "down", "left", "right" and other orientation or position relationship are based on the orientation or position relationship shown in the drawings, only for the convenience of description and simplification of operation, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, therefore it cannot be understood as a limitation of the utility model. In addition, the terms "first", "second" are only used to distinguish in description, and have no special meaning.

[0036] The embodiment provides a battery positive cover set welding device, which can improve the welding efficiency of the positive plate 220 and the positive cover set 230, and can adapt to the roll core 210 with different lengths without adjusting the position of the jig. Figure 1 and Figure 2As shown, the battery positive cover group welding device comprises a rotary drive 10, a carrier 20 and at least two welding mechanisms 30, the rotary drive 10 can output rotary motion with the vertical direction (Z direction in the figure) as the axis, the carrier 20 is connected to the output end of the rotary drive 10; at least two welding mechanisms 30 are evenly distributed on the carrier 20 with the rotation axis of the carrier 20 as the center, the welding mechanism 30 comprises a jig assembly 31 and a pressing drive assembly 32, the jig assembly 31 comprises a core jig 311 and a cover group jig 312 which are installed on the carrier 20 and arranged side by side along the first direction (X direction in the figure, the X direction is perpendicular to the Z direction), the core jig 311 is provided with a first accommodating groove 3111, the cover group jig 312 is provided with a second accommodating groove 3121 corresponding to the first accommodating groove 3111, the second accommodating groove 3121 is used for accommodating the positive cover group 230, the first accommodating groove 3111 is used for accommodating the core 210 laid flat, so that the positive sheet 220 connected with the core 210 is overlapped with the positive cover group 230, the first accommodating groove 3111 is provided with an opening at one end towards the cover group jig 312, the pressing drive assembly 32 comprises a pressing drive 321 and a pressing piece 322, the pressing drive 321 is installed on the carrier 20 and located at one side of the jig assembly 31, the pressing piece 322 is connected to the output end of the pressing drive 321, the pressing piece 322 is provided with a through hole 32221, the through hole 32221 is arranged above the second accommodating groove 3121 and corresponds to the second accommodating groove 3121 one by one, the pressing drive 321 can drive the pressing piece 322 to press down, so that the positive sheet 220 and the positive cover group 230 are pressed tightly.

[0037] The above-mentioned battery positive cover group welding device, before welding, the core 210 is placed into the first accommodating groove 3111, and the positive cover group 230 is placed into the second accommodating groove 3121, at this time, the positive sheet 220 is overlapped on the positive cover group 230, the pressing drive 321 drives the pressing piece 322 to press down, so that the positive sheet 220 and the positive cover group 230 are pressed tightly, at this time, the through hole 32221 is opposite to the position to be welded, the laser of the welding gun (not shown in the figure) passes through the through hole 32221, so that the positive sheet 220 and the positive cover group 230 are pressed tightly; during the welding process, at the same time, the other welding mechanism 30 completes the feeding or feeding of the core 210 and the positive cover group 230 by using the welding time, through the rotation of the rotary drive 10, the welding mechanism 30 which has completed the feeding is continuously rotated under the welding gun to carry out continuous welding, so as to shorten the stop time of welding and improve the welding efficiency; wherein the first accommodating groove 3111 is provided with an opening at one end, the core jig 311 and the cover group jig 312 are arranged at intervals, and the gap between the two can be used as an adaptive space for the length of the core 210, when the length of the core 210 changes, the core jig 311 can still be used for positioning without changing the position of the core jig 311 to adapt to the core 210 of different lengths.

[0038] It should be noted that in the embodiment, the welding mechanism 30 is provided with two, the carrier 20 extends along the first direction, and the two welding mechanisms 30 are symmetrically arranged with the center line of the carrier 20. That is, the angle of the rotation driving member 10 is 180° each time, welding is performed at one of the workstations, and feeding is completed first and then feeding is performed at the other workstation; in other embodiments, three welding mechanisms 30 can also be provided, the rotation driving member 10 rotates by 120° each time, feeding is performed at the second workstation, and feeding is performed at the third workstation, which is not limited here. When the welding mechanism 30 is three or more, the first direction is the direction from each welding mechanism 30 to the rotation axis of the carrier 20, that is, the radius direction of the concentric circle formed with the rotation shaft of the carrier 20 as the center.

[0039] Optionally, as shown in Figure 1 and Figure 2 , the position of the roll core jig 311 relative to the carrier 20 in the first direction is adjustable. It can be understood that the length of the first accommodating groove 3111 is limited to the adaptive length of the length of the roll core 210, and when the length change range of the roll core 210 is too large, the position of the roll core jig 311 can be adjusted for adaptive adjustment.

[0040] Optionally, as shown in Figure 2 , two long holes 3112 are formed on the roll core jig 311, the long holes 3112 extend along the first direction and are arranged at intervals along the second direction (the Y direction in the figure, the X direction, the Y direction, and the Z direction are perpendicular to each other), and the locking member is threadedly connected with the carrier 20 through the long holes 3112. Through the above arrangement, when the locking member is tightened with the carrier 20, the position of the roll core jig 311 is fixed, when it is loosened, the position of the roll core jig 311 can be adjusted along the second direction, and the two long holes 3112 are formed to ensure the force balance of both ends of the roll core jig 311.

[0041] Further, the roll core jig 311 is provided with a sink 3113 above the long hole 3112, so that when the locking member is installed, the head of the locking member is hidden in the roll core jig 311, preventing the head of the locking member from protruding and causing scratching.

[0042] In another optional embodiment, the roll core jig 311 can also be slidably connected with the carrier 20 in the first direction through the structure of the slide rail and the sliding block, and the sliding block can be clamped at any position of the slide rail to realize the adjustment of the position of the roll core jig 311, which is not limited here.

[0043] Optionally, as shown in Figure 2As shown, the first accommodating groove 3111 is provided with at least two, and the second accommodating groove 3121 and the through hole 32221 are provided one by one with the first accommodating groove 3111. Through the above setting, at least two positive pole pieces 220 and positive cover groups 230 can be welded at the same time in one station, and the welding efficiency is provided. In the embodiment, the first accommodating groove 3111 is provided with three, and in other embodiments, the number of the first accommodating groove 3111 can also be two, four or more, which is not limited here.

[0044] In another optional embodiment, the roll core jig 311 includes a first body and a first insert (both not shown), the first body is connected with the carrier 20, the first insert is detachably connected with the first body, and the first accommodating groove 3111 is formed on the first insert; the cover group jig 312 includes a second body and a second insert, the second body is connected with the carrier 20, the second insert is detachably connected with the second body, and the second accommodating groove 3121 is formed on the second insert. Through the above setting, when the diameter of the roll core 210 or the diameter of the positive cover group 230 changes, the first insert or the second insert can be removed, and the first insert with the first accommodating groove 3111 adapted to the diameter of the roll core 210 or the second insert with the second accommodating groove 3121 adapted to the diameter of the positive cover group 230 can be installed on the first body, further increasing the adaptability of the device to the size change of the roll core 210.

[0045] Optionally, the first body is provided with a first mounting groove, and the first insert is embedded in the first mounting groove. The above setting ensures that the plane of the first insert is lower than the height of the first body, preventing the first insert from being easily damaged by knocking. The second body is provided with a second mounting groove, and the second insert is embedded in the second mounting groove. The plane of the second insert is lower than the height of the second body, preventing the second insert from being easily damaged by knocking.

[0046] Of course, in the case of space, the first insert can be directly installed on the upper surface of the first body, and the second insert can be directly installed on the upper surface of the second body.

[0047] Further, the first body is provided with a first ejector pin, the first insert is provided with a first insertion hole, and the free end of the first ejector pin extends into the first mounting groove and can be inserted into the first insertion hole. By inserting the first ejector pin, the first insert is fixed in the first mounting groove. By pulling out the first ejector pin, the first insert can be removed.

[0048] Similarly, the second body is provided with a second ejector pin, the second insert is provided with a second insertion hole, and the free end of the second ejector pin extends into the second mounting groove and can be inserted into the second insertion hole. By inserting the second ejector pin, the second insert is fixed in the second mounting groove. By pulling out the second ejector pin, the second insert can be removed.

[0049] In another optional embodiment, the ejector pin can also be replaced by a wave bead screw, and correspondingly, grooves matching the wave beads on the wave bead screw are formed on the first and second inserts.

[0050] Optionally, as shown in Figure 1 The lower pressing member 322 includes a connecting portion 3221 and a lower pressing portion 3222. The connecting portion 3221 extends in the vertical direction and is connected to the output end of the lower pressing driving member 321. The lower pressing portion 3222 is connected to the connecting portion 3221 perpendicularly, and a through hole 32221 is formed on the lower pressing portion 3222. Through the above arrangement, the lower pressing member 322 is L-shaped, and the lower pressing driving member 321 can be directly installed on the bearing member 20, with the output end at the top, so that the installation mode of the lower pressing driving member 321 can be simplified.

[0051] Optionally, as shown in Figure 1 The battery positive cover assembly welding device further includes a base assembly 40, which includes a bottom plate 41 and two raised members 42 installed on the bottom plate 41, and the rotary driving member 10 is installed on the top of the two raised members 42. Through the arrangement of the two raised members 42, the overall device can be raised to a suitable operating height.

[0052] Optionally, the rotary driving member 10 is a rotary cylinder, and can also be a servo motor or other structure, which is not limited here.

[0053] Optionally, the lower pressing driving member 321 is a cylinder, and can also be a linear motor or a linear module structure, which is not limited here.

[0054] Obviously, the above embodiments of the present application are only examples for clearly illustrating the present application, and are not a limitation on the embodiments of the present application. For those skilled in the art, various obvious changes, re-adjustments and substitutions can be made without departing from the protection scope of the present application. Here, it is not necessary and impossible to exhaust all the embodiments. Any modification, equivalent substitution and improvement within the spirit and principle of the present application shall be included in the protection scope of the claims of the present application.

Claims

1. A battery positive cap assembly welding device, characterized by, The application relates to a welding device for welding positive plate and positive cover group, which comprises a rotary driving part (10) and a bearing part (20), the rotary driving part (10) can output rotary motion with a vertical direction as an axis, the bearing part (20) is connected to the output end of the rotary driving part (10); at least two welding mechanisms (30) are uniformly distributed on the bearing part (20) with the rotary shaft of the bearing part (20) as the center, the welding mechanism (30) comprises a jig assembly (31) and a pressing driving assembly (32), the jig assembly (31) comprises a roll core jig (311) and a cover group jig (312) which are installed on the bearing part (20) and arranged side by side along a first direction, the roll core jig (311) is provided with a first accommodating groove (3111), the cover group jig (312) is provided with a second accommodating groove (3121) corresponding to the first accommodating groove (3111), the second accommodating groove (3121) is used for accommodating a positive cover group (230), the first accommodating groove (3111) is used for accommodating a flat-lying roll core (210), so that a positive plate (220) connected to the roll core (210) is overlapped with the positive cover group (230), the first accommodating groove (3111) is provided with an opening at one end of the cover group jig (312), the pressing driving assembly (32) comprises a pressing driving part (321) and a pressing part (322), the pressing driving part (321) is installed on the bearing part (20) and located at one side of the jig assembly (31), the pressing part (322) is connected to the output end of the pressing driving part (321), the pressing part (322) is provided with a through hole (32221), the through hole (32221) is arranged above the second accommodating groove (3121) and corresponds to the second accommodating groove (3121), the pressing driving part (321) can drive the pressing part (322) to press, so that the positive plate (220) and the positive cover group (230) are pressed tightly; the first direction is towards the rotary shaft of the bearing part (20) and perpendicular to the vertical direction. The welding mechanism (30) is provided with two, the bearing part (20) extends along the first direction, and the two welding mechanisms (30) are arranged symmetrically with the center line of the bearing part (20). In the first direction, the position of the roll core jig (311) relative to the bearing part (20) is adjustable.

2. The battery positive cap set welding device according to claim 1, wherein The roll core jig (311) is provided with two long strip holes (3112), the long strip holes (3112) extend along the first direction and are arranged at intervals along a second direction, the first direction, the second direction and the vertical direction are perpendicular to each other, a locking part is threadedly connected with the bearing part (20) through the long strip holes (3112).

3. The battery positive cap set welding device according to claim 1, wherein The first accommodating groove (3111) is provided with at least two, and the second accommodating groove (3121) and the through hole (32221) are arranged one by one corresponding to the first accommodating groove (3111).

4. The battery positive cap set welding device according to claim 3, wherein ​ 5. The battery positive cap set welding apparatus according to any one of claims 1 to 4, characterized by, ​ 6. The battery positive cover set welding device according to any one of claims 1-4, characterized in that, The winding core jig (311) comprises a first body connected with the carrier (20), a first insert detachably connected with the first body, and a first accommodating groove (3111) formed in the first insert; and / or The cover group jig (312) comprises a second body connected with the carrier (20), a second insert detachably connected with the second body, and a second accommodating groove (3121) formed in the second insert.

7. The battery positive cap set welding apparatus according to claim 6, wherein The first body is provided with a first mounting groove, and the first insert is embedded in the first mounting groove; and / or The second body is provided with a second mounting groove, and the second insert is embedded in the second mounting groove.

8. The battery positive cap set welding apparatus according to claim 7, wherein The first body is provided with a first ejector pin, the first insert is provided with a first insertion hole, and a free end of the ejector pin extends into the first mounting groove and can be inserted into the first insertion hole; and / or The second body is provided with a second ejector pin, the second insert is provided with a second insertion hole, and a free end of the ejector pin extends into the second mounting groove and can be inserted into the second insertion hole.

9. The battery positive cover set welding device according to any one of claims 1-4, characterized in that, The lower pressing piece (322) comprises: a connecting portion (3221) extending along the vertical direction, the connecting portion (3221) being connected with an output end of the lower pressing driving piece (321); a lower pressing portion (3222) connected perpendicularly with the connecting portion (3221), and a through hole (32221) being formed in the lower pressing portion (3222).

10. The battery positive cap set welding apparatus according to any one of claims 1 to 4, characterized by, The base assembly (40) comprises a bottom plate (41) and two lifting pieces (42) mounted on the bottom plate (41), and the rotating driving piece (10) is mounted on top of the two lifting pieces (42).

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