Adapter piece feeding device

Abstract

The invention provides an adapter piece feeding device. The transfer piece feeding device is used for carrying out feeding treatment on a transfer piece combined material, the transfer piece combined material comprises a transfer piece and an insulating spacer, the insulating spacer is provided with an avoiding hole used for avoiding a tab of a battery cell group, the transfer piece feeding device comprises a transplanting clamping jaw assembly, the transplanting clamping jaw assembly comprises a combined material transplanting module and a tab clamping jaw module, and the combined material transplanting module is used for transplanting the combined material to the tab clamping jaw module. The combined material transplanting module is used for clamping the adapter piece combined material, transplanting the adapter piece combined material to a feeding position above a battery cell group and driving the adapter piece combined material to descend to enable the tab to penetrate through the avoiding hole, and the tab clamping jaw module is used for clamping and fixing the tab; and the tab carding assembly is used for carding the tabs into a vertical state. According to the invention, the problem of low manufacturing yield of the secondary battery in the prior art is solved.

Description

Technical Field

[0001] The present invention relates to the technical field of battery manufacturing, and more particularly, to a transfer sheet feeding device. Background Art

[0002] A secondary battery, also known as a rechargeable battery or a storage battery, refers to a battery that can be activated by charging after discharging and can be used continuously. Currently, secondary batteries play an important role in the new energy field.

[0003] A secondary battery is usually assembled from a housing, an electrode core, and a top cover. In the existing manufacturing process, the electrode core lies horizontally in a fixture, and the transfer sheet is placed between a pair of electrode cores. After the tab of the electrode core is connected to the transfer sheet by welding, the pair of electrode cores are brought together by a core combining operation.

[0004] In some new battery manufacturing processes, the electrode core is often placed vertically in a fixture, and the tab of the electrode core needs to pass through an avoidance hole in an insulating gasket located below the transfer sheet to complete the assembly operation with the transfer sheet. However, since the state of the tab of the electrode core cannot be fully guaranteed to be in a vertically erected state, in the case of a poor state of the tab of the electrode core, when placing the transfer sheet, the tab of the electrode core will not be able to smoothly pass through the avoidance hole in the insulating gasket below the transfer sheet, thus affecting the assembly operation of the transfer sheet.

[0005] As can be seen from the above, there is a problem of low manufacturing yield of secondary batteries in the prior art. Summary of the Invention

[0006] The main object of the present invention is to provide a transfer sheet feeding device to solve the problem of low manufacturing yield of secondary batteries in the prior art.

[0007] To achieve the above object, the present invention provides a transfer sheet feeding device for feeding a transfer sheet combination material. The transfer sheet combination material includes a transfer sheet and an insulating gasket, and the insulating gasket is provided with an avoidance hole for avoiding the tab of the electrode core group. The transfer sheet feeding device includes: a transplanting gripper assembly, which includes a combination material transplanting module and a tab gripper module. The combination material transplanting module is used for clamping the transfer sheet combination material and transplanting it to the feeding position above the electrode core group, and driving the transfer sheet combination material to descend so that the tab passes through the avoidance hole. The tab gripper module is used for clamping and fixing the tab; a tab combing assembly, which is used for combing the tab into a vertical state.

[0008] Further, there are two tab combing components, which are respectively located on both sides of the battery cell group and are symmetrically arranged. The tab combing component includes: a tab combing plate, which has a slot corresponding to the tab; a first driving member, one end of which is drivingly connected to the tab combing plate for driving the tab combing plate to horizontally insert into the tab; a lifting mechanism, the other end of the first driving member is drivingly connected to the lifting mechanism to move up and down under the drive of the lifting mechanism.

[0009] Further, a first chamfer is provided at the opening where the slot contacts the tab; and / or a second chamfer is provided at the bottom of the slot.

[0010] Further, the transplanting jaw assembly further includes a driving mechanism and a mounting bracket. The combined material transplanting module and the tab jaw module are respectively connected to the mounting bracket. The driving mechanism is drivingly connected to the mounting bracket for driving the transplanting jaw assembly to move horizontally or vertically.

[0011] Further, the tab jaw module includes: a first connecting plate and a second connecting plate, which are arranged at intervals up and down and are respectively located above and below the mounting bracket; a light axis, which passes through the mounting bracket and is respectively connected to the first connecting plate and the second connecting plate at both ends; a second driving member, which is arranged at the bottom end of the second connecting plate; a tab jaw, the second driving member is drivingly connected to the tab jaw for driving the tab jaw to clamp and fix the tab; a third driving member, which is arranged on the mounting bracket and is drivingly connected to the first connecting plate for driving the tab jaw module to move up and down.

[0012] Further, there are two second driving members, which are respectively located on both sides of the bottom end of the second connecting plate.

[0013] Further, the tab jaws are arranged in pairs and there are two pairs. The two pairs of tab jaws are respectively drivingly connected to the two second driving members.

[0014] Further, the tab jaw has a clamping portion. There are multiple clamping portions. The paired tab jaws are arranged in central symmetry. The multiple clamping portions of the paired tab jaws are arranged at intervals in the thickness direction of the tab and are offset in the width direction of the tab, so that the clamping portions of one tab jaw in the paired tab jaws are correspondingly arranged with the clamping portions of the other tab jaw to clamp and fix the tab.

[0015] Further, the tab jaw has a clamping portion. There are multiple clamping portions. The multiple clamping portions of the paired tab jaws are arranged in one-to-one correspondence for clamping and fixing the tab, and an anti-slip layer is provided on the side of the clamping portion close to the tab.

[0016] Further, there are two symmetrically arranged combined material transplanting modules. The tab clamping jaw module is located between the two combined material transplanting modules. The connecting piece includes a positive connecting piece and a negative connecting piece. The two combined material transplanting modules are used to clamp the positive connecting piece and the negative connecting piece respectively.

[0017] Further, a tab post is arranged on the connecting piece. The combined material transplanting module includes: a connecting frame; a first mounting plate, the first mounting plate is arranged on the connecting frame, and a fourth driving member is arranged at the bottom end of the first mounting plate; tab clamping jaws, the tab clamping jaws are arranged in pairs and are drivingly connected with the fourth driving member to clamp the tab post under the driving of the fourth driving member.

[0018] Further, the combined material transplanting module further includes: a second mounting plate, a slide rail is arranged on the connecting frame, the second mounting plate is adjustably connected to the slide rail, and a fifth driving member is arranged at the bottom end of the second mounting plate; a guide rod, the guide rod passes through the second mounting plate; a pressing block, the pressing block is drivingly connected with the fifth driving member and is located between the paired tab clamping jaws, and is used to press the combined tab material and the top surface of the battery cell tightly downward under the driving of the fifth driving member.

[0019] Applying the technical solution of the present invention, the tab feeding device includes a transplanting clamping jaw assembly and an ear combing assembly. The transplanting clamping jaw assembly includes a combined material transplanting module and an ear clamping jaw module. The combined material transplanting module is used to clamp the combined tab material and transplant it to the feeding position above the battery cell group, and drive the combined tab material to descend so that the ears pass through the avoidance holes. The ear clamping jaw module is used to clamp and fix the ears. The ear combing assembly is used to comb the ears into a vertical state. In this way, with the above tab feeding device, the combined material transplanting module can clamp the combined tab material and transplant it to the feeding position above the battery cell group, comb the ears into a vertical state through the ear combing assembly, and then the combined material transplanting module drives the combined tab material to descend so that the ears pass through the avoidance holes. During this process, the ear clamping jaw module can clamp and fix the ears to prevent the ears from shifting in position, thereby completing the feeding of the tab. The feeding device of the present application can pass the pre-welded ears through the avoidance holes of the insulating gasket below the tab. Whether it is a group or multiple groups of ears, they can be welded on one side of the tab without reserving ear allowances, eliminating defects such as ear insertion, redundancy, and sinking, greatly improving the manufacturing yield of battery cells, and solving the problem of low manufacturing yield of secondary batteries in the prior art. Description of the Drawings

[0020] The specification drawings forming a part of the present application are used to provide a further understanding of the present invention. The schematic embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation to the present invention. In the drawings:

[0021] Figure 1 The structural schematic diagram of the tab feeding device in a specific embodiment of the present invention is shown;

[0022] Figure 2 Shows a schematic structural diagram of a transplanting jaw assembly in a specific embodiment of the present invention;

[0023] Figure 3 Shows a schematic structural diagram of a combined material transplanting module in a specific embodiment of the present invention;

[0024] Figure 4 Shows a schematic structural diagram of an ear clip jaw module in a specific embodiment of the present invention;

[0025] Figure 5 Shows a partial structural diagram of the ear clip of the ear clip jaw module in a specific embodiment of the present invention;

[0026] Figure 6 Shows a schematic structural diagram of an ear combing assembly in a specific embodiment of the present invention;

[0027] Figure 7 Shows a schematic structural diagram of an ear combing plate in a specific embodiment of the present invention;

[0028] Figure 8 Shows a schematic structural diagram of a connecting piece combined material in a specific embodiment of the present invention;

[0029] Figure 9 Shows a schematic structural diagram of a battery cell group in a specific embodiment of the present invention;

[0030] Figure 10 Shows a schematic structural diagram of the ear combing assembly combing ears in another specific embodiment of the present invention;

[0031] Figure 11 Shows a schematic structural diagram of a connecting piece feeding device feeding a connecting piece combined material in a specific embodiment of the present invention.

[0032] Among them, the above-mentioned drawings include the following reference numerals:

[0033] 10. Transplanting jaw assembly; 11. Mounting bracket; 12. Composite material transplanting module; 121. Connecting frame; 122. First mounting plate; 123. Second mounting plate; 124. Transfer piece jaw; 125. Guide rod; 126. Pressure block; 13. Tab jaw module; 131. Third driving member; 132. First connecting plate; 133. Second connecting plate; 134. Optical axis; 135. Second driving member; 136. Tab jaw; 1361. First clamping portion; 1362. Second clamping portion; 20. Tab combing assembly; 21. Lifting mechanism; 22. First driving member; 23. Tab combing plate; 231. Slot; 232. First chamfer; 233. Second chamfer; 30. Transfer piece composite material; 31. Positive transfer piece; 32. Negative transfer piece; 33. Insulating gasket; 331. Avoidance hole; 34. Transfer piece pole; 35. Adhesive layer; 40. Battery cell group; 41. Battery cell; 42. Tab. Detailed implementation mode

[0034] It should be noted that, without conflict, the embodiments in the present application and the features in the embodiments may be combined with each other. The present invention will be described in detail below with reference to the drawings and in conjunction with the embodiments.

[0035] It should be pointed out that, unless otherwise specified, all technical and scientific terms used in the present application have the same meaning as commonly understood by those of ordinary skill in the technical field to which the present application belongs.

[0036] In the present invention, unless otherwise stated, the orientation terms such as "upper, lower, top, bottom" are usually in the direction shown in the drawings, or in the vertical, perpendicular or gravitational direction of the component itself; similarly, for the convenience of understanding and description, "inner, outer" refers to the inner and outer relative to the contour of each component itself, but the above orientation terms do not limit the present invention.

[0037] Obviously, the above-described embodiments are only a part of the embodiments of the present invention, rather than all of the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0038] In order to solve the problem of low manufacturing yield of secondary batteries in the prior art, the present invention provides a transfer piece feeding device.

[0039] As Figure 1 shown, the secondary battery includes a top cover, a transfer piece composite material 30, a battery cell group 40 and a housing, and the transfer piece composite material 30 and the battery cell group 40 are located in the accommodation space surrounded by the top cover and the housing. As Figure 8As shown, the adapter sheet assembly 30 includes an adapter sheet and an insulating gasket 33. Among them, the adapter sheet includes a positive adapter sheet 31 and a negative adapter sheet 32. The positive adapter sheet 31 and the negative adapter sheet 32 are respectively connected to the insulating gasket 33. The insulating gasket 33 is provided with an avoidance hole 331 for avoiding the tab 42 of the battery cell group 40. Further, adapter sheet posts 34 are provided on the positive adapter sheet 31 and the negative adapter sheet 32 for clamping and transplanting and welding the battery top cover in the subsequent process. A glue layer 35 is provided on the insulating gasket 33 to bond and fix the positive adapter sheet 31 and the negative adapter sheet 32 to the insulating gasket 33.

[0040] In this embodiment, as Figure 9 shown, the battery cell group 40 includes N battery cells 41 pre-welded with tabs, where N is an even number greater than or equal to 2, that is, 2, 4, 6, etc. The positive tab and the negative tab of the battery cell 41 are located on the same side of the large surface of the battery cell. Among them, the tabs 42 of the two battery cells 41 located at the central position are both located on the side close to each other, that is, arranged back to back. The tabs 42 of the other battery cells 41 located on the outside are located inside the large surface of the battery cell.

[0041] Specifically, the positive adapter sheet 31 and the negative adapter sheet 32 in this embodiment are U-shaped. The battery cell group 40 includes four battery cells 41. Among them, the two battery cells 41 located at the central position are arranged back to back, and the tabs 42 of the two battery cells 41 located on the outside are located inside the large surface of the battery cell. Further, corresponding to the eight tabs of the four battery cells 41, the insulating gasket 33 is provided with eight avoidance holes 331. Among them, two avoidance holes 331 are located in the inner U-shaped gap of the positive adapter sheet 31, two avoidance holes 331 are located in the inner U-shaped gap of the negative adapter sheet 32, and the other four avoidance holes 331 are respectively located outside the two adapter sheets, as Figure 8 shown. It can be understood that in this case, the tabs 42 of the two battery cells 41 located at the central position are inserted into the inside of the positive adapter sheet 31 and the negative adapter sheet 32, and the tabs 42 of the other two battery cells 41 are located outside the positive adapter sheet 31 and the negative adapter sheet 32. Further, when the number of battery cells 41 is 6 or more, the tabs 42 of the two battery cells 41 located on the outermost side are located outside the positive adapter sheet 31 and the negative adapter sheet 32, and the tabs 42 of the other battery cells 41 closer to the inside are inserted into the inside of the positive adapter sheet 31 and the negative adapter sheet 32.

[0042] As Figure 1As shown in the figure, the present invention provides a transfer sheet loading device for loading a transfer sheet combined material 30. The transfer sheet loading device includes a transplanting jaw assembly 10 and an ear combing assembly 20. The transplanting jaw assembly 10 includes a combined material transplanting module 12 and an ear jaw module 13. The combined material transplanting module 12 is used to clamp the transfer sheet combined material 30 and transplant it to the loading position above the battery cell group 40, and drive the transfer sheet combined material 30 to descend so that the ears 42 pass through the avoidance holes 331. The ear jaw module 13 is used to clamp and fix the ears 42. The ear combing assembly 20 is used to comb the ears 42 into a vertical state. Among them, the transplanting jaw assembly 10 is located above the battery cell group 40, and there are two ear combing assemblies 20, and the two ear combing assemblies 20 are respectively located on both sides of the battery cell group 40 and are symmetrically arranged.

[0043] With the above transfer sheet loading device, the combined material transplanting module 12 can clamp the transfer sheet combined material 30 and transplant it to the loading position above the battery cell group 40. The ear combing assembly 20 combs the ears 42 into a vertical state, and then the combined material transplanting module 12 drives the transfer sheet combined material 30 to descend so that the ears 42 pass through the avoidance holes 331. During this process, the ear jaw module 13 can clamp and fix the ears 42 to prevent the ears 42 from shifting in position, thereby completing the loading of the transfer sheet. The loading device of the present application can pass the pre-welded ears through the avoidance holes 331 of the insulating gasket 33 below the transfer sheet. Whether it is a group or multiple groups of ears, they can be welded on one side of the transfer sheet without reserving ear allowances, eliminating defects such as ear insertion, redundancy, and sinking, and greatly improving the manufacturing yield of battery cells.

[0044] As Figure 2 shown in the figure, the transplanting jaw assembly 10 includes a driving mechanism (not shown), a mounting bracket 11, a combined material transplanting module 12, and an ear jaw module 13. The combined material transplanting module 12 and the ear jaw module 13 are respectively connected to the mounting bracket 11, and the driving mechanism is drivingly connected to the mounting bracket 11 for driving the transplanting jaw assembly 10 to move horizontally or vertically. In this embodiment, the driving mechanism can be a horizontal and vertical linear movement module or a manipulator, etc., which can be selected according to actual needs.

[0045] In this embodiment, the main steps of feeding the adapter plate assembly 30 by using the adapter plate feeding device of the present application include: providing the pre-assembled adapter plate assembly 30; clamping the adapter plate assembly 30 by the assembly transfer module 12 in the transplanting jaw assembly 10 and transplanting it to the feeding position above the battery cell group 40; combing the ear tabs 42 into a vertical state by the ear tab combing assembly 20; driving the adapter plate assembly 30 to descend by the transplanting jaw assembly 10 so that the ear tabs 42 pass through the avoidance holes 331; clamping and fixing the ear tabs 42 by the ear tab clamping module 13 in the transplanting jaw assembly 10 and withdrawing and resetting the ear tab combing assembly 20 from the ear tabs 42; continuing to drive the adapter plate assembly 30 to descend by the transplanting jaw assembly 10 to a first preset height from the top surface of the battery cell group 40; pressing the adapter plate assembly 30 against the top surface of the battery cell group 40 by the assembly transfer module 12; releasing the assembly transfer module 12 and the ear tab clamping module 13 and raising and resetting the transplanting jaw assembly 10 to complete the feeding of the adapter plate.

[0046] In this embodiment, there are two symmetrically arranged assembly transfer modules 12, and the ear tab clamping module 13 is located between the two assembly transfer modules 12. The two assembly transfer modules 12 are used to clamp the positive adapter plate 31 and the negative adapter plate 32 respectively.

[0047] As Figure 3 shown, the assembly transfer module 12 includes a connecting frame 121, a first mounting plate 122 and adapter plate jaws 124. The first mounting plate 122 is arranged on the connecting frame 121, and a fourth driving member is arranged at the bottom end of the first mounting plate 122. The adapter plate jaws 124 are arranged in pairs and are drivingly connected to the fourth driving member to clamp the adapter plate pole column 34 under the drive of the fourth driving member.

[0048] Further, as Figure 3 shown, the assembly transfer module 12 further includes a second mounting plate 123, a guide rod 125 and a pressing block 126. A slide rail is arranged on the connecting frame 121, and the second mounting plate 123 is connected to the slide rail in a position-adjustable manner. A fifth driving member is arranged at the bottom end of the second mounting plate 123. The guide rod 125 passes through the second mounting plate 123. The pressing block 126 is drivingly connected to the fifth driving member and is located between the paired adapter plate jaws 124, and is used to press the adapter plate assembly 30 against the top surface of the battery cell group 40 downward along the guide rod 125 under the drive of the fifth driving member.

[0049] Specifically, the combined material transplanting module 12 is vertically arranged as a whole. The first mounting plate 122 is arranged on the first side of the connecting frame 121. The top of the connecting frame 121 has a horizontal top plate. The top end of the guide rod 125 is fixedly connected to the horizontal top plate and extends downward at the bottom end. The guide rod 125 and the second mounting plate 123 are arranged on the opposite second side of the connecting frame 121. There are two guide rods 125, and the two guide rods 125 are arranged at intervals and respectively penetrate through both ends of the second mounting plate 123. Further, the bottom of the adapter piece gripper 124 has a clamping portion for approaching and clamping the adapter piece pole column 34 in the horizontal direction. It can be understood that in order to avoid the adapter piece pole column 34, there is a certain height difference between the pressing block 126 and the clamping portion of the adapter piece gripper 124. Among them, the pressing block 126 is generally in an L shape, so as to bend from the second side of the second mounting plate 123 and extend into the paired adapter piece grippers 124, and contact the adapter piece pole column 34 when descending.

[0050] In this embodiment, the combined material transplanting module 12 further includes an elastic member sleeved on the guide rod 125 for providing a pre-pressing elastic force to the adapter piece pole column 34 before the fifth driving member acts. Through the above settings, it is convenient to pick up and place the adapter piece combined material 30. Specifically, the elastic member can be a spring.

[0051] In this embodiment, the adapter piece gripper 124 and the corresponding adapter piece pole column 34 can be square, or can be bayonet-shaped, spiked-shaped, etc., and can be selected according to actual needs.

[0052] In this embodiment, the fourth driving member and the fifth driving member are air cylinders or servo motors.

[0053] As Figure 4 shown, the tab gripper module 13 includes a third driving member 131, a first connecting plate 132, a second connecting plate 133, a optical axis 134, a second driving member 135 and a tab gripper 136. The first connecting plate 132 and the second connecting plate 133 are arranged at intervals up and down and are respectively located above and below the mounting bracket 11. The optical axis 134 penetrates through the mounting bracket 11 and both ends are respectively connected to the first connecting plate 132 and the second connecting plate 133. The second driving member 135 is arranged at the bottom end of the second connecting plate 133. The second driving member 135 is drivingly connected to the tab gripper 136 for driving the tab gripper 136 to clamp and fix the tab 42. The third driving member 131 is arranged on the mounting bracket 11 and is drivingly connected to the first connecting plate 132 for driving the tab gripper module 13 to move up and down.

[0054] Specifically, the tab gripper module 13 is vertically arranged as a whole. The mounting bracket 11 includes a bottom plate, on which an inverted U-shaped frame is provided, and the third driving member 131 is fixed on the inverted U-shaped frame, thus having a certain mounting height. The first connecting plate 132 and the second connecting plate 133 are respectively located above and below the bottom plate, and the two are connected by a light shaft 134. Further, a linear bearing is embedded in the bottom plate, and the light shaft 134 passes through the linear bearing, so that it can move up and down smoothly. In this embodiment, there are four light shafts 134, and the four light shafts 134 are respectively located at the four corners of the first connecting plate 132 and the second connecting plate 133. The third driving member 131 is drivingly connected to the first connecting plate 132, and thus finally drives the second driving member 135 and the tab gripper 136 to move up and down through the light shaft 134 and the second connecting plate 133.

[0055] In this embodiment, during the above-mentioned feeding process, the step of further driving the adapter plate combined material 30 to descend to a first preset height from the top surface of the battery cell group 40 by the transplanting gripper assembly 10 is specifically as follows: driving the combined material transplanting module 12 to descend to the first preset height from the top surface of the battery cell group 40 at a constant speed through the driving mechanism, and at the same time driving the tab gripper module 13 to rise at the same speed through the third driving member 131, so that the tab 42 remains relatively stationary.

[0056] It can be understood that since the driving mechanism drives the entire transplanting gripper assembly 10 to move downward together, and at this time the tab gripper module 13 has clamped and fixed the tab 42, in order to prevent damage to the tab 42, the tab gripper module 13 needs to move upward relatively, that is, move upward under the drive of the third driving member 131. Maintaining the same speed can ensure that the tab 42 remains relatively stationary, and no tensile force or extrusion force is generated on the tab 42, avoiding damage to the tab 42.

[0057] In this embodiment, the first preset height is 0.5 mm to 2 mm.

[0058] In this embodiment, there are two second driving members 135, and the two second driving members 135 are respectively located on both sides of the bottom end of the second connecting plate 133. Further, the tab grippers 136 are arranged in pairs and there are two pairs, and the two pairs of tab grippers 136 are respectively drivingly connected to the two second driving members 135. Specifically, the two second driving members 135 are respectively used to drive their respective tab grippers 136 to clamp and fix the positive tabs and negative tabs of each battery cell 41.

[0059] In this embodiment, the third driving member 131 and the second driving member 135 are air cylinders or servo motors.

[0060] In this embodiment, the tab gripper 136 has a clamping portion. There are multiple clamping portions, and the multiple clamping portions of the paired tab grippers are arranged in one-to-one correspondence for clamping and fixing the tabs. A non-slip layer is provided on the side close to the tab 42. That is to say, a non-slip layer is provided on the contact surface where the clamping portion of the tab gripper 136 contacts the tab 42. In this way, the clamping portion of the tab gripper 136 can be in flexible contact with the tab 42 and have a large frictional force, ensuring that the tab 42 is clamped without being damaged.

[0061] Specifically, the non-slip layer can be rubber-like materials such as silicone and polyurethane, or engineering plastics such as PI, Teflon, and PEEK, which can be selected according to actual needs.

[0062] In this embodiment, the paired tab grippers 136 are arranged in central symmetry. The multiple clamping portions of the paired tab grippers 136 are spaced along the thickness direction of the tab 42 and are offset along the width direction of the tab 42, so that the clamping portion of one tab gripper 136 in the paired tab grippers 136 is arranged corresponding to the clamping portion of the other tab gripper 136 to clamp and fix the tab 42. It can be understood that, taking Figure 11 as an example, the thickness direction of the tab 42 is the front-back direction in the figure, and the width direction of the tab 42 is the left-right direction. Through the above arrangement, the clamping portion can cross-fix the tab 42, improving the uniformity of the pressing and fastening force on the tab 42 and preventing the tab 42 from being damaged during the feeding process.

[0063] Furthermore, in a specific embodiment, the two second driving members 135 are respectively used to drive their respective tab grippers 136 to clamp and fix the positive tabs and negative tabs of the battery cells 41 except for the two outermost battery cells 41, that is, the positive tabs and negative tabs inserted inside the positive adapter plate 31 and the negative adapter plate 32. With the above arrangement, while ensuring the clamping and fixing effect on the battery cell tabs, the number of clamping portions can be reduced, thereby optimizing the structure of the tab gripper 136 and reducing the production cost.

[0064] In a specific embodiment of the present application, as Figure 5 shown, one tab gripper 136 has two clamping portions, namely a first clamping portion 1361 and a second clamping portion 1362. The first clamping portion 1361 and the second clamping portion 1362 are spaced along the thickness direction of the tab 42 and are offset along the width direction of the tab 42, so that the first clamping portion 1361 of one tab gripper 136 in the paired tab grippers 136 is arranged corresponding to the second clamping portion 1362 of the other tab gripper 136 to clamp and fix the tab 42.

[0065] Specifically, in Figure 5Among them, the paired ear grippers 136 corresponding to a third driving member 131 are arranged with a front - rear dislocation, and the first clamping portions 1361 and the second clamping portions 1362 of each ear gripper 136 are arranged with a left - right dislocation. In this way, the first clamping portion 1361 of the front - side ear gripper 136 corresponds to the second clamping portion 1362 of the rear - side ear gripper 136, and the second clamping portion 1362 of the front - side ear gripper 136 corresponds to the first clamping portion 1361 of the rear - side ear gripper 136, so as to move closer to each other and respectively clamp and fix the two positive or negative ears of the two battery cells 41 located at the central position. It can be understood that the number of clamping portions corresponds to the number of battery cells 41. Since the ear gripper 136 needs to clamp and fix the ears 42 inserted inside the positive - pole adapter piece 31 and the negative - pole adapter piece 32, the number of clamping portions in each ear gripper 136 is the number of battery cells 41 minus 2.

[0066] Furthermore, it can be understood that when the ear gripper 136 needs to clamp all the ears 42, the number of clamping portions in each ear gripper 136 needs to be the same as the number of battery cells 41. Corresponding to the above - mentioned specific embodiment, an ear gripper 136 needs to have three clamping portions, and the setting method of the clamping portions is the same as above.

[0067] In this embodiment, during the above - mentioned loading process, the step of clamping and fixing the ear 42 by the ear gripper module 13 in the transplanting gripper assembly 10 is specifically as follows: clamping and fixing the positive ear of the battery cell 41 located inside the positive - pole adapter piece 31 by the first pair of ear grippers 136, and clamping and fixing the negative ear of the battery cell 41 located inside the negative - pole adapter piece 32 by the second pair of ear grippers 136.

[0068] In a specific embodiment of the present application, as Figure 11 shown, clamping and fixing the two positive ears of the two battery cells 41 located at the central position by the first pair of ear grippers 136, and clamping and fixing the two negative ears of the two battery cells 41 located at the central position by the second pair of ear grippers 136.

[0069] As Figure 6 shown, the ear combing assembly 20 includes a lifting mechanism 21, a first driving member 22 and an ear combing plate 23. The ear combing plate 23 has a slot 231 corresponding to the ear 42. One end of the first driving member 22 is drivingly connected to the ear combing plate 23 for driving the ear combing plate 23 to horizontally insert into the ear 42. The other end of the first driving member 22 is drivingly connected to the lifting mechanism 21 to move up and down under the drive of the lifting mechanism 21.

[0070] Specifically, the tab combing plate 23 is horizontally arranged, and the slot 231 extends to one end face close to the battery cell group 40. The width of the slot 231 is adapted to the thickness of the tab 42, that is, slightly larger than the thickness of the tab 42, so that the tab 42 can be inserted and combed. Further, the setting position and quantity of the slot 231 are adapted to the tab 42.

[0071] As Figure 7 shown, a first chamfer 232 is provided at the opening where the slot 231 contacts the tab 42. Through the above setting, it is convenient for the tab 42 to smoothly enter the slot 231, ensuring the normal progress of tab combing.

[0072] Further, a second chamfer 233 is provided at the bottom of the slot 231. Through the above setting, it is prevented that the tab root is scratched when the tab combing plate 23 is inserted.

[0073] In this embodiment, as Figure 10 shown, in the above feeding process, the specific steps of combing the tab 42 into a vertical state by the tab combing assembly 20 are as follows: driving the tab combing plate 23 to descend to a second preset height X from the root of the tab 42 by the lifting mechanism 21; driving the tab combing plate 23 to horizontally insert into the tab 42 by the first driving member 22; driving the tab combing plate 23 to ascend to a third preset height Y from the head of the tab 42 by the lifting mechanism 21 to comb the tab 42 into a vertical state. It can be understood that when the tab combing plate 23 descends to the second preset height X from the root of the tab 42, it is the insertion position of the tab combing plate 23.

[0074] Specifically, when combing the tab 42, the tab combing plates 23 of the tab combing assemblies 20 on both sides of the battery cell group 40 move horizontally towards each other at a constant speed, and the inclined tab 42 will be brought in from the first chamfer 232 at the end of the tab combing plate 23. After the tab combing plate 23 is completely inserted, the tab combing plate 23 ascends to a position Y mm from the head of the tab 42 and stops moving, and the tab 42 is constrained by the tab combing plate 23 to be in a vertical state.

[0075] In this embodiment, the range of the second preset height X is 1 mm to 15 mm. Preferably, the range of the second preset height X is 5 mm.

[0076] In this embodiment, the range of the third preset height Y is 1 mm to 10 mm. Preferably, the range of the third preset height Y is 3 mm.

[0077] Further, in the above feeding process, the step of driving the adapter sheet combination material 30 to descend by the transfer gripper assembly 10 is specifically as follows: driving the adapter sheet combination material 30 to descend by the transfer gripper assembly 10 until it fits against the ear combing plate 23; the adapter sheet combination material 30 and the ear combing plate 23 jointly descend to a second preset height X from the root of the ear 42.

[0078] Specifically, when the ear 42 is combed, the adapter sheet combination material 30 is driven by the transfer gripper assembly 10 to move downward until it fits against the top surface of the ear combing plate 23. At this time, the ear 42 passes through the avoidance hole 331 of the insulating gasket 33 and exposes a certain height. Among them, the ears 42 of the battery cell 41 at the central position extend from the inner sides of the positive and negative adapter sheets, and the ears 42 of the outermost battery cell 41 extend from the outer sides of the positive and negative adapter sheets. Then, respectively driven by the transfer gripper assembly 10 and the lifting mechanism 21, the adapter sheet combination material 30 and the ear combing plate 23 jointly descend to the insertion position of the ear combing plate 23. At this time, the ear grippers 136 of the ear gripper module 13 clamp and fix the ears 42 on the inner sides of the positive and negative adapter sheets, and the ear combing plate 23 then moves outward and resets.

[0079] Further, the driving mechanism continues to drive the combination material transfer module 12 to descend at a constant speed, and at the same time drives the ear gripper module 13 to rise at the same speed by the third driving member 131 so that the ear 42 remains relatively stationary. When the combination material transfer module 12 descends to a first preset height from the top surface of the battery cell group 40, at this time, the combination material transfer module 12 is only at a small height from the top surface of the battery cell group 40, and the fifth driving member drives the pressing block 126 to move downward to press the adapter sheet combination material 30 against the top surface of the battery cell group 40. Then the ear grippers 136 and the adapter sheet grippers 124 are respectively released, and the transfer gripper assembly 10 rises and resets to complete the feeding of the adapter sheet.

[0080] From the above description, it can be seen that the above embodiments of the present invention achieve the following technical effects: by using the above adapter sheet feeding device, the combination material transfer module 12 can clamp the adapter sheet combination material 30 and transfer it to the feeding position above the battery cell group 40. The ear 42 is combed into a vertical state by the ear combing assembly 20, and then the combination material transfer module 12 drives the adapter sheet combination material 30 to descend so that the ear 42 passes through the avoidance hole 331. During this process, the ear gripper module 13 can clamp and fix the ear 42 to prevent the ear 42 from shifting in position, thereby completing the feeding of the adapter sheet. The feeding device of the present application can pass the pre-welded ear through the avoidance hole 331 of the insulating gasket 33 below the adapter sheet. Whether it is a group or multiple groups of ears, they can be welded on one side of the adapter sheet without reserving ear margins, eliminating defects such as inner insertion, redundancy, and sinking of the ears, and greatly improving the manufacturing yield of the battery cell.

[0081] It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit the exemplary embodiments according to the present application. As used herein, unless the context clearly indicates otherwise, the singular forms are also intended to include the plural forms. In addition, it should also be understood that when the terms "comprising" and / or "including" are used in this specification, they specify the presence of features, steps, operations, devices, components, and / or combinations thereof.

[0082] It should be noted that the terms "first", "second", etc. in the specification, claims and above-mentioned drawings of the present application are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged under appropriate circumstances so that the embodiments of the present application described herein can be implemented in an order different from those illustrated or described herein.

[0083] The above are only the preferred embodiments of the present invention and are not intended to limit the present invention. For those skilled in the art, the present invention can have various changes and modifications. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.

Claims

1. A transfer piece feeding device, characterized in that, For feeding the adapter sheet assembly (30), the adapter sheet assembly (30) includes an adapter sheet and an insulating gasket (33), and the insulating gasket (33) is provided with an avoidance hole (331) for avoiding the tabs (42) of the battery cell group (40). The adapter sheet feeding device includes: A transplanting jaw assembly (10), the transplanting jaw assembly (10) includes a combined material transplanting module (12) and a tab clamping jaw module (13). The combined material transplanting module (12) is used for clamping the adapter sheet assembly (30) and transplanting it to the feeding position above the battery cell group (40), and driving the adapter sheet assembly (30) to descend so that the tabs (42) pass through the avoidance hole (331). The tab clamping jaw module (13) is used for clamping and fixing the tabs (42); A tab combing assembly (20), the tab combing assembly (20) is used for combing the tabs (42) into a vertical state.

2. The adapter sheet loading device according to claim 1, wherein There are two tab combing assemblies (20), and the two tab combing assemblies (20) are respectively located on both sides of the battery cell group (40) and are symmetrically arranged. The tab combing assembly (20) includes: A tab combing plate (23), the tab combing plate (23) has a slot (231) corresponding to the tab (42); A first driving member (22), one end of the first driving member (22) is drivingly connected to the tab combing plate (23) for driving the tab combing plate (23) to horizontally insert into the tab (42); A lifting mechanism (21), the other end of the first driving member (22) is drivingly connected to the lifting mechanism (21) to move up and down under the drive of the lifting mechanism (21).

3. The adapter sheet feeding device according to claim 2, wherein A first chamfer (232) is provided at the opening where the slot (231) contacts the tab (42); and / or A second chamfer (233) is provided at the bottom of the slot (231).

4. The adapter sheet feeding device according to claim 1, wherein, The transplanting jaw assembly (10) further includes a driving mechanism and a mounting bracket (11). The combined material transplanting module (12) and the tab clamping jaw module (13) are respectively connected to the mounting bracket (11), and the driving mechanism is drivingly connected to the mounting bracket (11) for driving the transplanting jaw assembly (10) to move horizontally or vertically.

5. The adapter sheet feeding device according to claim 4, wherein, The tab clamping jaw module (13) includes: A first connecting plate (132) and a second connecting plate (133), the first connecting plate (132) and the second connecting plate (133) are arranged at intervals up and down and are respectively located above and below the mounting bracket (11); A optical axis (134), the optical axis (134) passes through the mounting bracket (11) and is respectively connected to the first connecting plate (132) and the second connecting plate (133) at both ends; A second driving member (135), the second driving member (135) is arranged at the bottom end of the second connecting plate (133); The tab gripper (136), the second driving member (135) is drivingly connected to the tab gripper (136) and is used to drive the tab gripper (136) to clamp and fix the tab (42); The third driving member (131), the third driving member (131) is disposed on the mounting bracket (11) and is drivingly connected to the first connecting plate (132), and is used to drive the tab gripper module (13) to move up and down.

6. The adapter sheet loading device according to claim 5, wherein, There are two second driving members (135), and the two second driving members (135) are respectively located on both sides of the bottom end of the second connecting plate (133).

7. The adapter sheet feeding device according to claim 6, wherein, The tab grippers (136) are arranged in pairs and there are two pairs, and the two pairs of tab grippers (136) are respectively drivingly connected to the two second driving members (135).

8. The adapter sheet loading device according to claim 7, wherein, The tab gripper (136) has clamping portions, and there are multiple clamping portions. The paired tab grippers (136) are arranged in central symmetry. The multiple clamping portions of the paired tab grippers (136) are arranged at intervals in the thickness direction of the tab (42), and are arranged in a staggered manner in the width direction of the tab (42), so that the clamping portions of one tab gripper (136) in the paired tab grippers (136) are correspondingly arranged with the clamping portions of the other tab gripper (136) to clamp and fix the tab (42).

9. The adapter sheet feeding device according to claim 7, characterized in that The tab gripper (136) has clamping portions, and there are multiple clamping portions. The multiple clamping portions of the paired tab grippers (136) are arranged in one-to-one correspondence to clamp and fix the tab (42), and an anti-slip layer is provided on the side of the clamping portion close to the tab (42).

10. The transfer sheet feeding device according to any one of claims 1 to 9, characterized in that, There are two symmetrically arranged combined material transfer modules (12), the tab gripper module (13) is located between the two combined material transfer modules (12), the transfer sheet includes a positive transfer sheet (31) and a negative transfer sheet (32), and the two combined material transfer modules (12) are used to respectively clamp the positive transfer sheet (31) and the negative transfer sheet (32).

11. The transfer piece loading device according to any one of claims 1 to 9, characterized in that, A transfer sheet tab (34) is provided on the transfer sheet, and the combined material transfer module (12) includes: A connecting frame (121); A first mounting plate (122), the first mounting plate (122) is disposed on the connecting frame (121), and a fourth driving member is provided at the bottom end of the first mounting plate (122); Transfer sheet grippers (124), the transfer sheet grippers (124) are arranged in pairs and are drivingly connected to the fourth driving member to clamp the transfer sheet tab (34) under the drive of the fourth driving member.

12. The adapter sheet feeding device according to claim 11, wherein, The combined material transfer module (12) further includes: A second mounting plate (123), a slide rail is provided on the connecting frame (121), the second mounting plate (123) is connected to the slide rail in a position-adjustable manner, and a fifth driving member is provided at the bottom end of the second mounting plate (123); A guide rod (125), the guide rod (125) passes through the second mounting plate (123); A briquette (126), the briquette (126) is drivingly connected to the fifth driving member and is located between the paired adapter piece grippers (124), and is used to press the adapter piece combination material (30) and the top surface of the battery cell group (40) downward under the drive of the fifth driving member.

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