Battery cell clamping device

Abstract

The application provides an electric core clamping device, which comprises a rotating disc mechanism, a clamping mechanism and a bearing assembly. A plurality of clamping mechanisms are arranged annularly around the axis of the rotating disc mechanism, and a plurality of bearing assemblies are arranged one by one in correspondence with the plurality of clamping mechanisms, and the bearing assembly is used for bearing the electric core. The rotating disc mechanism can drive the clamping mechanism and the bearing assembly to rotate. The clamping mechanism comprises a lifting assembly and a clamping assembly. The clamping assembly comprises two clamping pieces arranged at intervals, and the two clamping pieces are used for clamping the electric core. The lifting assembly comprises a lifting rod and two connecting pieces. One end of the connecting piece is hinged to the lifting rod, and the other end is hinged to the clamping piece. The lifting rod moves in the vertical direction to drive the two connecting pieces to rotate away from each other or towards each other, and then drive the two clamping pieces to move away from each other or towards each other. The overall structure of the application is compact, and a plurality of electric cores can be clamped. With the rotation of the rotating disc mechanism, the clamping operation and the welding operation of the plurality of electric cores are realized in turn, which is beneficial to improve the working efficiency of the production line.

Description

Technical Field

[0001] This invention relates to the field of battery manufacturing technology, and in particular to a battery cell clamping device. Background Technology

[0002] The battery cell is the most important component of a battery. After undergoing a series of processes including mechanical / ultrasonic flattening, encapsulation, casing, current collector welding, and sealing welding, the battery cell can be assembled into a finished battery. Before welding the current collector to the end of the cell, it must be clamped by a clamping mechanism. The clamping and welding processes have a significant impact on the efficiency of the production line.

[0003] In existing technologies, the cells to be welded are usually placed in a cell carrier, which moves with the conveyor line to the clamping station. The clamping equipment holds the cells, and then the current collector is welded to the end of the cells by the welding equipment. The whole system occupies a lot of space and the number of cells clamped at the same time is limited, resulting in low production line efficiency. Summary of the Invention

[0004] This invention provides a battery cell clamping device to solve the problems of limited clamping capacity and low production line efficiency of existing battery cell clamping equipment.

[0005] This invention provides a battery cell clamping device, comprising: a turntable mechanism, a clamping mechanism, and a support component;

[0006] Multiple clamping mechanisms are arranged circumferentially around the axis of the turntable mechanism, and multiple bearing components are arranged one-to-one with the multiple clamping mechanisms. The bearing components are used to carry battery cells. The turntable mechanism can drive the clamping mechanisms and the bearing components to rotate. The clamping mechanism includes a lifting component and a clamping component.

[0007] The clamping assembly includes two clamping members spaced apart, the two clamping members being used to clamp the battery cell;

[0008] The lifting assembly includes a lifting rod and two connecting members. One end of each connecting member is hinged to the lifting rod, and the other end of each connecting member is hinged to the clamping member. The lifting rod moves vertically to cause the two connecting members to rotate in opposite directions or towards each other, and the two connecting members drive the two clamping members to move in opposite directions or towards each other.

[0009] According to the present invention, a battery cell clamping device is provided, wherein the connecting member includes a connecting rod, a first hinge shaft, and a second hinge shaft;

[0010] The first hinge shaft is vertically disposed at one end of the lifting rod, and the second hinge shaft is disposed at the clamping member. The first hinge shaft and the second hinge shaft are arranged parallel to each other at a distance. One end of the connecting rod is hinged to the first hinge shaft, and the other end of the connecting rod is hinged to the second hinge shaft.

[0011] According to a battery cell clamping device provided by the present invention, the clamping mechanism further includes a slide rail, the slide rail is arranged in a horizontal direction, the clamping member is slidably connected to the slide rail, and the two connecting members drive the two clamping members to move back to back or towards each other along the slide rail.

[0012] According to the present invention, a battery cell clamping device is provided, wherein the clamping member includes a supporting body, a first supporting plate, a second supporting plate, and a clamping plate;

[0013] The first support plate and the second support plate are disposed on one side of the support body. The first support plate and the second support plate are spaced apart. The inner wall surface of the first support plate and the inner wall surface of the second support plate are in sliding contact with the two surfaces opposite to the slide rail, respectively.

[0014] The clamping plate is located on the other side of the support body, and the inner wall surface of the clamping plate is used to abut against the surface of the battery cell.

[0015] According to a battery cell clamping device provided by the present invention, the clamping assembly further includes a first roller;

[0016] The first roller is rotatably mounted on the clamping plate, and at least a portion of the surface of the first roller is suspended above the inner wall of the clamping plate. The first roller is used for rolling contact with the surface of the battery cell.

[0017] According to the present invention, a battery cell clamping device is provided, wherein the clamping assembly further includes an elastic element;

[0018] One end of the elastic element is connected to one of the clamping elements, and the other end of the elastic element is connected to another clamping element.

[0019] According to a battery cell clamping device provided by the present invention, the battery cell clamping device further includes a first track, and the lifting assembly further includes a second roller;

[0020] The first track is circumferentially disposed on the turntable mechanism, and the first track is coaxially disposed with the turntable mechanism. The first track is constructed with a first arc-shaped track.

[0021] The second roller is rotatably connected to the other end of the lifting rod, and the second roller can move along the first arc-shaped track so that the lifting rod can move in the vertical direction.

[0022] According to the present invention, a battery cell clamping device further includes a plurality of clamping components;

[0023] The clamping assembly is located on the upper side of the clamping assembly. Multiple clamping assemblies are arranged in a one-to-one correspondence with multiple clamping assemblies. The clamping assembly includes a driving member and a welding head. The welding head is used to clamp one end of the battery cell, and the driving member is used to drive the welding head to rotate.

[0024] According to the present invention, a battery cell clamping device further includes a plurality of lifting components;

[0025] The lifting assembly is located below the supporting assembly. Multiple lifting assemblies are arranged in a one-to-one correspondence with multiple supporting assemblies. The supporting assembly includes a supporting plate with a limiting hole, and the supporting plate is used to support the battery cell. The lifting assembly includes a top rod, which is coaxially arranged with the limiting hole. The top rod can move along the vertical direction and can pass through the limiting hole to lift the battery cell on the supporting plate.

[0026] According to the present invention, a battery cell clamping device further includes a second track, and the lifting assembly further includes a third roller;

[0027] The second track is circumferentially disposed on the turntable mechanism, and the second track is coaxially disposed with the turntable mechanism. The second track is constructed with a second arc-shaped track.

[0028] The third roller is rotatably connected to the other end of the top rod, and the third roller can move along the second arc-shaped track so that the top rod can move in the vertical direction.

[0029] The battery cell clamping device provided by this invention comprises multiple bearing components and multiple clamping mechanisms arranged circumferentially around the axis of a turntable mechanism. The bearing components are used to support the battery cells. The lifting rod rises or falls vertically, causing two connecting parts to rotate in opposite directions or towards each other. The two connecting parts drive two clamping parts to move in opposite directions or towards each other, thereby achieving clamping or separation of the battery cells. The overall structure is compact, occupies little space, and is easy to operate. It can clamp multiple battery cells. As the turntable mechanism rotates, multiple battery cell clamping and welding operations are performed sequentially, which helps to improve the working efficiency of the production line. Attached Figure Description

[0030] To more clearly illustrate the technical solutions in this invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this invention. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0031] Figure 1 This is one of the structural schematic diagrams of the battery cell clamping device provided by the present invention (partially not shown);

[0032] Figure 2 This is the second schematic diagram of the battery cell clamping device provided by the present invention;

[0033] Figure 3 This is a partial structural schematic diagram of the battery cell clamping device provided by the present invention;

[0034] Figure 4 This is a schematic diagram of the clamping mechanism provided by the present invention;

[0035] Figure 5 This is a schematic diagram of the structure of the clamping member provided by the present invention;

[0036] Reference numerals: 1: Turntable mechanism; 11: Rotating shaft; 12: Mounting plate; 2: Clamping mechanism; 21: Slide rail; 22: Clamping assembly; 221: Clamping component; 2211: First support plate; 2212: Second support plate; 2213: Clamping plate; 2214: Support body; 222: First roller; 223: Elastic component; 23: Lifting assembly; 231: Lifting rod; 232: Connecting component; 233: Second roller; 3: Bearing assembly; 31: Bearing plate; 4: Pressing assembly; 41: Welding pressure head; 5: Lifting assembly; 51: Top rod; 52: Third roller; 6: First track; 7: Second track; 8: Battery cell. Detailed Implementation

[0037] To make the objectives, technical solutions, and advantages of this invention clearer, the technical solutions of this invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this invention. All other embodiments obtained by those skilled in the art based on the embodiments of this invention without creative effort are within the scope of protection of this invention.

[0038] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0039] The following is combined Figures 1 to 5 This invention describes a battery cell clamping device according to an embodiment of the present invention.

[0040] like Figure 1 , Figure 2 , Figure 3 and Figure 4 As shown, the battery cell clamping device provided in this embodiment of the invention includes: a turntable mechanism 1, a clamping mechanism 2, and a support component 3; multiple clamping mechanisms 2 are arranged circumferentially around the axis of the turntable mechanism 1, and multiple support components 3 are arranged one-to-one with the multiple clamping mechanisms 2, the support component 3 being used to support the battery cell 8; the turntable mechanism 1 can drive the clamping mechanism 2 and the support component 3 to rotate, the clamping mechanism 2 includes a lifting component 23 and a clamping component 22; the clamping component 22 includes two clamping members 221 arranged at intervals, the two clamping members 221 being used to clamp the battery cell 8; the lifting component 23 includes a lifting rod 231 and two connecting members 232, one end of the connecting member 232 is hinged to the lifting rod 231, and the other end of the connecting member 232 is hinged to the clamping member 221; the lifting rod 231 moves in the vertical direction so that the two connecting members 232 rotate in opposite directions or in opposite directions, the two connecting members 232 drive the two clamping members 221 to move in opposite directions or in opposite directions along the slide rail 21.

[0041] Specifically, the turntable mechanism 1 includes a rotating shaft 11, a first support plate, a second support plate, and mounting plates 12. The first and second support plates are sleeved on the rotating shaft 11, spaced apart, with the spacing determined according to requirements. Multiple mounting plates 12 are arranged circumferentially around the axis of the rotating shaft 11. One end of each mounting plate 12 is connected to the first support plate, and the other end is connected to the second support plate. The mounting plates 12 are arranged vertically, and both the bearing assembly 3 and the clamping mechanism 2 can be connected to the mounting plates 12.

[0042] The support assembly 3 includes a support plate 31, which is horizontally placed and can be fixedly connected to the mounting plate 12. The battery cell 8 is placed on the top surface of the support plate 31. It is understood that the battery cell 8 to be welded is placed in a battery cell carrier, and the battery cell carrier and the battery cell 8 are placed together on the support plate 31. Furthermore, the support assembly 3 also includes reinforcing plates, two of which are spaced apart. The reinforcing plates are triangular in shape, with one side connected to the mounting plate 12 and the other side connected to the bottom surface of the support plate 31, ensuring the stability of the support plate 31.

[0043] The supporting component 3 and the clamping mechanism 2 are arranged in a one-to-one correspondence. The clamping mechanism 2 includes a lifting component 23 and a clamping component 22. The clamping component 22 includes two clamping members 221. One end of the clamping member 221 can be movably connected to the mounting plate 12, and the other end of the clamping member 221 is constructed with a clamping part for clamping the battery cell 8. The two clamping members 221 are arranged at intervals in the horizontal direction. It can be understood that the two clamping members 221 are located above the supporting plate 31, and the distance between the bottom surface of the clamping member 221 and the top surface of the supporting plate 31 is set according to requirements. The clamping portions of the two clamping members 221 enclose a clamping area for clamping the battery cell 8. The two clamping members 221 can move back to back or towards each other along the mounting plate 12. When the two clamping members 221 move back to back, the distance between the two clamping portions increases, so as to accept the battery cell 8 to be welded or transfer the battery cell 8 after welding. When the two clamping members 221 move towards each other, the distance between the two clamping portions decreases, so as to clamp the battery cell 8 and perform welding operations.

[0044] The lifting assembly 23 includes a lifting rod 231 and two connecting members 232. The lifting rod 231 is arranged vertically, and the two connecting members 232 are symmetrically arranged about the center plane of the lifting rod 231. One end of the connecting member 232 is hinged to the lifting rod 231, and the other end of the connecting member 232 is hinged to the clamping member 221. The lifting rod 231 can move upward or downward along the vertical direction. When the lifting rod 231 moves upward, it causes the two connecting members 232 to rotate in opposite directions, and the two connecting members 232 cause the two clamping members 221 to move in opposite directions along the mounting plate 12. When the lifting rod 231 moves downward, it causes the two connecting members 232 to rotate in opposite directions, and the two connecting members 232 cause the two clamping members 221 to move in opposite directions along the mounting plate 12.

[0045] Multiple support components 3 and multiple clamping mechanisms 2 are arranged circumferentially around the axis of the turntable mechanism 1, which can clamp multiple battery cells 8 simultaneously. The overall structure of the battery cell clamping device is compact and occupies little space. It is understood that the battery cells 8 can be placed on the support plate 31 manually or by a feeding mechanism. A current collector or cover plate to be welded to the end of the battery cell 8 is placed there. The battery cell clamping device is circumferentially equipped with welding equipment, including a welding laser head located above the clamping mechanism 2. The battery cell 8 rotates with the turntable mechanism 1 to the welding station, and the welding laser head welds the current collector to the end of the battery cell 8 or the cover plate to the end of the battery cell 8 through laser penetration welding.

[0046] The following is a detailed description of the working process of the battery cell clamping device. The clamping mechanism 2 rotates with the turntable mechanism 1 to the clamping position. The lifting rod 231 rises vertically, causing the two connecting parts 232 to rotate in opposite directions. The two connecting parts 232 then cause the two clamping parts 221 to move in opposite directions, placing the battery cell 8 to be welded onto the support plate 31. Then, the lifting rod 231 descends vertically, causing the two connecting parts 232 to rotate towards each other. The two connecting parts 232 then cause the two clamping parts 221 to move towards each other along the slide rail 21, clamping the battery cell 8 to be welded. Afterwards, the clamping mechanism 2 rotates with the turntable mechanism 1 to the welding position. The welding laser head welds the current collector to the end of the battery cell 8. For ease of description, the current collector will be used as an example in the following text. Afterwards, the clamping mechanism 2 rotates with the turntable mechanism 1 to the unloading position, where the welded battery cell 8 can be unloaded manually or by a unloading mechanism.

[0047] In this embodiment of the invention, multiple bearing components 3 and multiple clamping mechanisms 2 are arranged circumferentially around the axis of the turntable mechanism 1. The bearing components 3 are used to carry the battery cells 8. The lifting rod 231 rises or falls vertically, causing two connecting parts 232 to rotate in opposite directions or towards each other. The two connecting parts 232 cause two clamping parts 221 to move in opposite directions or towards each other, so as to achieve clamping or separation of the battery cells 8. The overall structure is compact, occupies little space, and is easy to operate. It can clamp multiple battery cells 8. As the turntable mechanism 1 rotates, the clamping and welding operations of multiple battery cells 8 are realized in sequence, which is conducive to improving the working efficiency of the production line.

[0048] like Figure 4 As shown, in an optional embodiment, the connector 232 includes a connecting rod, a first hinge shaft, and a second hinge shaft; the first hinge shaft is vertically disposed at one end of the lifting rod 231, and the second hinge shaft is disposed on the clamping member 221, with the first hinge shaft and the second hinge shaft being arranged parallel to each other at a distance; one end of the connecting rod is hinged to the first hinge shaft, and the other end of the connecting rod is hinged to the second hinge shaft.

[0049] Specifically, the two connecting parts 232 are symmetrically arranged, with the axes of the first and second hinge shafts parallel. The first hinge shaft is perpendicular to the lifting rod 231, and the second hinge shaft is located at the bottom of the clamping member 221. The connecting rod has a first shaft hole and a second shaft hole at both ends, respectively. The first shaft hole is adapted to the first hinge shaft, and the second shaft hole is adapted to the second hinge shaft. One end of the connecting rod is hinged to the first hinge shaft through the first shaft hole, and the other end of the connecting rod is hinged to the second hinge shaft through the second shaft hole.

[0050] The connecting rod can rotate about the axis of the first hinge axis. One end of the connecting rod rotates about the first hinge axis, causing the other end of the connecting rod to rotate relative to the second hinge axis, so as to apply a pushing or pulling force to the clamping member 221, thereby enabling the clamping member 221 to reciprocate.

[0051] In this embodiment of the invention, the lifting rod 231 rises or falls vertically, and the lifting rod 231 drives the connecting rod to rotate around the first hinge axis. The connecting rod applies a pushing or pulling force to the clamping member 221 through the second hinge axis, so that the clamping member 221 can reciprocate. The structure is simple and the operation is convenient.

[0052] like Figure 3 and Figure 4 As shown, in an optional embodiment, the clamping mechanism 2 further includes a slide rail 21, which is arranged in a horizontal direction. The clamping member 221 is slidably connected to the slide rail 21, and the two connecting members 232 drive the two clamping members 221 to move in opposite directions or towards each other along the slide rail 21.

[0053] Specifically, the slide rail 21 is placed horizontally and fixed to the mounting plate 12. The slide rail 21 is located above the support plate 31. One end of the clamping member 221 is slidably connected to the slide rail 21. The two clamping members 221 are spaced apart along the length of the slide rail 21, and the two clamping members 221 can move in opposite directions or towards each other along the slide rail 21.

[0054] The lifting rod 231 can move vertically upwards or downwards. When the lifting rod 231 moves upwards, it causes the two connecting parts 232 to rotate in opposite directions, which in turn causes the two clamping parts 221 to move in opposite directions along the slide rail 21. When the lifting rod 231 moves downwards, it causes the two connecting parts 232 to rotate in opposite directions, which in turn causes the two clamping parts 221 to move in opposite directions along the slide rail 21. The ability of the two clamping parts 221 to move in opposite directions or in opposite directions along the slide rail 21 contributes to the smoothness of movement.

[0055] like Figure 5As shown, in an optional embodiment, the clamping member 221 includes a support body 2214, a first support plate 2211, a second support plate 2212, and a clamping plate 2213; the first support plate 2211 and the second support plate 2212 are disposed on one side of the support body 2214, the first support plate 2211 and the second support plate 2212 are spaced apart, and the inner wall surface of the first support plate 2211 and the inner wall surface of the second support plate 2212 are respectively in sliding contact with two opposing surfaces of the slide rail 21; the clamping plate 2213 is disposed on the other side of the support body 2214, and the inner wall surface of the clamping plate 2213 is used to abut against the surface of the battery cell 8.

[0056] Specifically, one side of the support body 2214 is constructed with a first support plate 2211 and a second support plate 2212 for sliding contact with the slide rail 21, and the other side of the support body 2214 is constructed with a clamping plate 2213. The inner wall surface of the clamping plate 2213 is the clamping surface, and the inner wall surface may have a certain curvature to facilitate clamping the battery cell 8. The inner wall surface of the clamping plate 2213 abuts against the surface of the battery cell 8.

[0057] The first support plate 2211 and the second support plate 2212 are spaced apart along the height direction of the support body 2214. The top surface of the first support plate 2211 is defined as the inner wall surface of the first support plate 2211, and the bottom surface of the second support plate 2212 is defined as the inner wall surface of the second support plate 2212. The distance between the inner wall surfaces of the first support plate 2211 and the second support plate 2212 is adapted to the thickness of the slide rail 21. The inner wall surface of the first support plate 2211 slides in contact with the bottom surface of the slide rail 21, and the inner wall surface of the second support plate 2212 slides in contact with the top surface of the slide rail 21. The uniform sliding contact between the first support plate 2211 and the second support plate 2212 with the slide rail 21 is beneficial to the stability of the movement of the clamping member 221.

[0058] The second hinge shaft can be installed on the first support plate 2211. For example, the first support plate 2211 has a through groove penetrating its top and bottom surfaces. The through groove has two opposing side groove walls and a bottom surface. The size of the through groove is adapted to the second hinge shaft, and both ends of the second hinge shaft are connected to the two side groove walls respectively. It is understood that the second hinge shaft is not higher than the top surface of the first support plate 2211 to avoid interference with the slide rail 21.

[0059] In this embodiment of the invention, the inner wall surface of the first support plate 2211 and the inner wall surface of the second support plate 2212 slide in contact with the bottom and top surfaces of the slide rail 21, respectively, which is beneficial to the smoothness of the movement of the clamping member 221. The clamping plate 2213 has an inner wall surface that is adapted to the surface of the battery cell 8, which ensures the stability of clamping the battery cell 8.

[0060] like Figure 4 and Figure 5As shown, in an optional embodiment, the clamping assembly 22 further includes a first roller 222; the first roller 222 is rotatably disposed on the clamping plate 2213, at least a portion of the surface of the first roller 222 is suspended above the inner wall surface of the clamping plate 2213, and the first roller 222 is used to make rolling contact with the surface of the battery cell 8.

[0061] Specifically, the axis of the first roller 222 is aligned with the vertical direction, and the first roller 222 is rotatably connected to the clamping plate 2213. For example, the clamping plate 2213 has a through groove or recess. Taking a through groove as an example, the through groove penetrates both the inner and outer walls of the clamping plate 2213. The first roller 222 can be installed in the through groove and can rotate around its axis. Part of the surface of the first roller 222 is suspended above the inner wall of the clamping plate 2213. The first roller 222 is made of flexible materials such as polyurethane or silicone.

[0062] The battery cell 8 is located within the clamping area formed by the two clamping members 221. The surface of the battery cell 8 is in flexible contact with the surface of the first roller 222, which can prevent damage to the battery cell 8. When the welding laser head is relatively stationary and the battery cell 8 needs to be rotated to weld the current collector to the end of the battery cell 8, the battery cell 8 and the first roller 222 are in rolling contact, ensuring the smooth rotation of the battery cell 8 and thus helping to ensure the welding quality. Alternatively, the battery cell 8 can be relatively stationary, and the current collector can be welded to the end of the battery cell 8 by rotating the welding laser head.

[0063] In this embodiment of the invention, the first roller 222 is rotatably connected to the clamping plate 2213, and the surface of the first roller 222 makes rolling contact with the surface of the battery cell 8. This can not only avoid damaging the battery cell 8, but also improve the stability of the rotation of the battery cell 8 and ensure the welding quality.

[0064] like Figure 4 and Figure 5 As shown, in an optional embodiment, there are multiple first rollers 222, which are spaced apart on the clamping plate 2213.

[0065] Specifically, the number of first rollers 222 is set according to actual needs. For example, two first rollers 222 are spaced apart along the height direction of the clamping plate 2213. The number of first rollers 222 installed on the two clamping plates 2213 can be different. For example, two first rollers 222 are installed on one clamping plate 221, and the two first rollers 222 are arranged sequentially along the height direction; four first rollers 222 are installed on the other clamping plate 2213, and the four first rollers 222 are arranged in two rows. The surface of the battery cell 8 rolls in contact with multiple first rollers 222, which helps to further improve the stability of the rotation of the battery cell 8.

[0066] like Figure 4As shown, in an optional embodiment, the clamping assembly 22 further includes an elastic element 223; one end of the elastic element 223 is connected to a clamping element 221, and the other end of the elastic element 223 is connected to another clamping element 221.

[0067] Specifically, the elastic element 223 can be a tension spring, with a hook at the end of the tension spring. The clamping element 221 has a connecting post at the top or bottom, and the size of the connecting post is adapted to the hook. The hook at one end of the tension spring is hooked to the connecting post of one clamping element 221, and the hook at the other end of the tension spring is hooked to the connecting post of another clamping element 221, thereby realizing the connection between the tension spring and the two clamping elements 221.

[0068] Two connecting rods drive two clamping components 221 to move in opposite directions along the slide rail 21. The tension of the spring prevents the clamping components 221 from moving excessively and effectively prevents them from slipping off the slide rail 21 accidentally, ensuring safety during use. Two connecting rods also drive two clamping components 221 to move towards each other along the slide rail 21. The rebound force of the spring helps the two clamping components 221 firmly hold the battery cell 8.

[0069] The number of elastic elements 223 is set according to actual needs. For example, there may be one elastic element 223, which is connected to the connecting post at the top of the two clamping elements 221, or the elastic element 223 is connected to the connecting post at the bottom of the two clamping elements 221. Alternatively, there may be two elastic elements 223, one of which is connected to the connecting post at the top of the two clamping elements 221, and the other elastic element 223 is connected to the connecting post at the bottom of the two clamping elements 221.

[0070] In this embodiment of the invention, one end of the elastic member 223 is connected to a clamping member 221, and the other end of the elastic member 223 is connected to another clamping member 221. The elastic member 223 can prevent the clamping member 221 from moving excessively, ensuring the reliability and safety of use. At the same time, the rebound force of the elastic member 223 helps the two clamping members 221 to firmly clamp the battery cell 8.

[0071] like Figure 1 and Figure 3 As shown, in an optional embodiment, the battery cell clamping device further includes a first track 6, and the lifting assembly 23 further includes a second roller 233; the first track 6 is circumferentially arranged in the circumferential direction of the turntable mechanism 1, the first track 6 is coaxially arranged with the turntable mechanism 1, and the first track 6 is constructed with a first arc-shaped track; the second roller 233 is rotatably connected to the other end of the lifting rod 231, and the second roller 233 can move along the first arc-shaped track so that the lifting rod 231 can move in the vertical direction.

[0072] Specifically, the first track 6 is located at the bottom of the turntable mechanism 1. The first track 6 is coaxially arranged with the turntable mechanism 1. The first track 6 is composed of a first arc-shaped track and a straight track connected end to end. The first arc-shaped track corresponds to the clamping station. The first arc-shaped track is composed of a first ascending arc segment and a first descending arc segment.

[0073] The second roller 233 is rotatably connected to the side of the lifting rod 231 away from the connecting rod. The second roller 233 rolls in contact with the first track 6 and can roll along the trajectory line of the first track 6. The turntable mechanism 1 drives the clamping mechanism 2 to rotate to the first arc-shaped track. Driven by the turntable mechanism 1, the second roller 233 first rolls along the first rising arc segment, so that the lifting rod 231 moves upward in the vertical direction until the second roller 233 rolls to the highest point of the first rising arc segment. At this time, the distance between the two clamping members 221 is the largest, and the battery cell 8 to be welded is placed on the support plate 31. Driven by the turntable mechanism 1, the second roller 233 continues to roll along the first falling arc segment, so that the lifting rod 231 moves downward in the vertical direction. The two clamping members 221 move towards each other until the second roller 233 rolls to the lowest point of the first falling arc segment, and the two clamping members 221 clamp the battery cell 8. The turntable mechanism 1 further drives the second roller 233 to move along the straight section of the track to the welding station to perform welding operations on the battery cell 8.

[0074] In this embodiment of the invention, the second roller 233 is rotatably connected to the lifting rod 231. The turntable mechanism 1 drives the second roller 233 to roll along the first arc-shaped track. The second roller 233 drives the lifting rod 231 to move upward or downward in the vertical direction. No driving source is required, the structure is simple, and the operation is reliable.

[0075] like Figure 1 , Figure 2 and Figure 3 As shown, in an optional embodiment, the battery cell clamping device further includes a plurality of clamping components 4; the clamping components 4 are disposed on the upper side of the clamping components 22, and the plurality of clamping components 4 are arranged in a one-to-one correspondence with the plurality of clamping components 22. The clamping components 4 include a driving member and a welding pressure head 41. The welding pressure head 41 is used to clamp one end of the battery cell 8, and the driving member is used to drive the welding pressure head 41 to rotate.

[0076] Specifically, the clamping assembly 4 is located above the clamping assembly 22 and is mounted on the mounting plate 12. The clamping assembly 4 includes a driving component and a welding head 41. The driving component can be a motor, which can drive the welding head 41 to rotate. The clamping assembly 4 is slidably mounted on the mounting plate 12. The welding head 41 can move vertically and downwards to press the current collector against the end of the battery cell 8.

[0077] After the welding head 41 presses the collector plate, the driving component drives the welding head 41 to rotate, and the welding head 41 drives the battery cell 8 to rotate, thus realizing the welding operation of the battery cell 8.

[0078] In this embodiment of the invention, the clamping component 4 is also integrated on the turntable mechanism 1. The welding head 41 clamps the collector plate, and the driving component drives the welding head 41 to rotate. The rotation of the welding head 41 drives the battery cell 8 to rotate. The welding operation is convenient, and it is also conducive to the compactness of the overall structure of the battery cell clamping device, reducing the transfer process and improving the working efficiency of the production line.

[0079] like Figure 1 , Figure 2 and Figure 3 As shown, in an optional embodiment, the battery cell clamping device further includes multiple lifting components 5; the lifting components 5 are disposed on the lower side of the bearing component 3, and the multiple lifting components 5 are arranged one-to-one with the multiple bearing components 3. The bearing component 3 includes a bearing plate 31, which is provided with a limiting hole and is used to support the battery cell 8; the lifting component 5 includes a push rod 51, which is coaxially arranged with the limiting hole and can move in the vertical direction. The push rod 51 can pass through the limiting hole to lift the battery cell 8 on the bearing plate 31.

[0080] Specifically, the lifting assembly 5 includes a lifting rod 51, which is arranged vertically. One end of the lifting rod 51 is provided with a fourth roller, which can rotate around its axis. The support plate 31 is provided with a limiting hole, and the bottom of the battery cell carrier is provided with a lifting hole. The inner diameter of both the limiting hole and the lifting hole matches the outer diameter of the fourth roller. The end face of the fourth roller is used to abut against the end face of the battery cell 8.

[0081] The clamping mechanism 2 rotates with the turntable mechanism 1 to the clamping position. The push rod 51 moves vertically upward, driving the fourth roller to pass through the limiting hole and the lifting hole in sequence until the end face of the fourth roller abuts against the bottom surface of the battery cell 8. The welding head 41 presses against the current collector on the top of the battery cell 8, and the welding head 41 and the fourth roller press against the opposite ends of the battery cell 8. Then the driving component drives the welding head 41 to rotate, which drives the battery cell 8 to rotate. The fourth roller rotates synchronously with the battery cell 8, which is beneficial to the smoothness of the rotation of the battery cell 8.

[0082] like Figure 1 and Figure 3 As shown, in an optional embodiment, the battery cell clamping device further includes a second track 7, and the lifting assembly 5 further includes a third roller 52; the second track 7 is circumferentially arranged in the circumferential direction of the turntable mechanism 1, the second track 7 is coaxially arranged with the turntable mechanism 1, and the second track 7 is constructed with a second arc-shaped track; the third roller 52 is rotatably connected to the other end of the top rod 51, and the third roller 52 can move along the second arc-shaped track so that the top rod 51 can move in the vertical direction.

[0083] Specifically, the second track 7 is located at the bottom of the turntable mechanism 1. The second track 7 is located outside the first track 6. The second track 7 is coaxial with the first track 6. The second track 7 is composed of a second arc-shaped track and a straight track connected end to end. The second arc-shaped track corresponds to the clamping station. The second arc-shaped track is composed of a second rising arc segment and a second falling arc segment.

[0084] The third roller 52 is rotatably connected to the end of the top rod 51 away from the fourth roller. The third roller 52 rolls in contact with the second track 7 and can roll along the trajectory line of the second track 7. The turntable mechanism 1 drives the clamping mechanism 2 to rotate to the second arc-shaped track. Under the drive of the turntable mechanism 1, the third roller 52 first rolls along the second rising arc segment, so that the top rod 51 moves upward in the vertical direction until the second roller 233 rolls to the highest point of the second rising arc segment. At this time, the top surface of the fourth roller abuts against the bottom surface of the battery cell 8. At the same time, the welding head 41 abuts against the current collector on the top of the battery cell 8. The welding head 41 and the fourth roller press against the opposite ends of the battery cell 8, and the two clamping parts 221 clamp the battery cell 8.

[0085] Then, the drive unit drives the welding head 41 to rotate, and the welding head 41 drives the battery cell 8 to rotate around its own axis. The fourth roller rotates synchronously with the battery cell 8, and the welding laser head performs the welding operation on the battery cell 8. After the welding operation is completed, under the drive of the turntable mechanism 1, the third roller 52 continues to roll along the second descending arc segment, so that the push rod 51 moves downward in the vertical direction until the third roller 52 rolls to the lowest point of the second descending arc segment. The fourth roller separates from the battery cell 8, making it easy to remove the welded battery cell 8 from the clamping area.

[0086] In this embodiment of the invention, the third roller 52 is rotatably connected to the top rod 51. The turntable mechanism 1 drives the third roller 52 to roll along the second arc-shaped track. The third roller 52 drives the top rod 51 to move upward or downward in the vertical direction. No driving source is required, the structure is simple, the operation is convenient, and the operation is reliable.

[0087] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, and not to limit them; although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features; and these modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A battery cell clamping device, characterized in that, The application relates to an electric core clamping device. The device comprises a rotating disc mechanism, a clamping mechanism and a bearing assembly. A plurality of clamping mechanisms are arranged around the axis of the rotating disc mechanism, and a plurality of bearing assemblies are arranged one by one corresponding to the plurality of clamping mechanisms, and the bearing assembly is used for bearing the electric core. The rotating disc mechanism can drive the clamping mechanism and the bearing assembly to rotate. The clamping mechanism comprises a lifting assembly and a clamping assembly. The clamping assembly comprises two clamping pieces arranged at intervals, and the two clamping pieces are used for clamping the electric core. The lifting assembly comprises a lifting rod and two connecting pieces. One end of the connecting piece is hinged to the lifting rod, and the other end of the connecting piece is hinged to the clamping piece. The lifting rod moves in the vertical direction to drive the two connecting pieces to rotate away from each other or rotate towards each other, and the two connecting pieces drive the two clamping pieces to move away from each other or move towards each other. The electric core clamping device further comprises a plurality of jacking assemblies.

2. The cell gripping device of claim 1, wherein The jacking assembly is arranged on the lower side of the bearing assembly. The bearing assembly comprises a bearing plate provided with a limiting hole.

3. The cell gripping device of claim 1, wherein The bearing plate is used for bearing the electric core.

4. The cell gripping device of claim 3, wherein The jacking assembly comprises a jacking rod coaxially arranged with the limiting hole. The jacking rod can move in the vertical direction. The jacking rod can pass through the limiting hole to jack up the electric core on the bearing plate.

5. The cell gripping device of claim 4, wherein, The electric core clamping device further comprises a second track. The jacking assembly further comprises a third roller. The second track is arranged around the circumference of the rotating disc mechanism. The second track is coaxially arranged with the rotating disc mechanism. The second track is configured with a second arc-shaped track. The third roller is rotatably connected to the other end of the jacking rod. The third roller can move along the second arc-shaped track to drive the jacking rod to move in the vertical direction. The connecting piece comprises a connecting rod, a first hinge shaft and a second hinge shaft. The first hinge shaft is vertically arranged on one end of the lifting rod. The second hinge shaft is arranged on the clamping piece. The first hinge shaft and the second hinge shaft are arranged in parallel at intervals. One end of the connecting rod is hinged to the first hinge shaft. The other end of the connecting rod is hinged to the second hinge shaft. The clamping mechanism further comprises a sliding rail arranged in the horizontal direction. The clamping piece is slidingly connected to the sliding rail. The two connecting pieces drive the two clamping pieces to move away from each other or move towards each other along the sliding rail. The clamping piece comprises a support body, a first support plate, a second support plate and a clamping plate. The first support plate and the second support plate are arranged on one side of the support body. The first support plate and the second support plate are arranged at intervals. The inner wall surface of the first support plate and the inner wall surface of the second support plate are slidingly in contact with the two opposite surfaces of the sliding rail. The clamping plate is arranged on the other side of the support body. The inner wall surface of the clamping plate is used for abutting against the surface of the electric core. The clamping assembly further comprises a first roller. The first roller is rotatably arranged on the clamping plate. At least part of the surface of the first roller protrudes from the inner wall surface of the clamping plate. The first roller is used for rolling contact with the surface of the electric core.

6. The cell gripping device of claim 1, wherein The clamping assembly further comprises an elastic member; One end of the elastic member is connected with one of the clamping members, and the other end of the elastic member is connected with the other clamping member.

7. The cell gripping device of claim 1, wherein The battery cell clamping device further comprises a first track, and the lifting assembly further comprises a second roller; The first track is arranged in the circumferential direction of the rotating disc mechanism, and the first track is coaxially arranged with the rotating disc mechanism, and the first track is configured as a first arc-shaped track; The second roller is rotatably connected with the other end of the lifting rod, and the second roller can move along the first arc-shaped track, so that the lifting rod can move in the vertical direction.

8. The cell gripping device of claim 1, wherein, The battery cell clamping device further comprises a plurality of pressing assemblies; The pressing assembly is arranged on the upper side of the clamping assembly, and a plurality of pressing assemblies are arranged in one-to-one correspondence with a plurality of clamping assemblies, the pressing assembly comprises a driving member and a welding pressure head, the welding pressure head is used for pressing one end of the battery cell, and the driving member is used for driving the welding pressure head to rotate.

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