Battery cell unloading clamping mechanism

Abstract

An embodiment of the present invention provides a battery cell unloading clamping mechanism, which relates to the field of lithium battery manufacturing equipment. The battery cell unloading clamping mechanism includes an inner clamping plate, an outer clamping plate and a clamping drive mechanism. The inner clamping plate and the outer clamping plate are arranged opposite to each other. The clamping drive mechanism is simultaneously connected to the inner clamping plate and the outer clamping plate in a transmission manner, and is used to drive the inner clamping plate and the outer clamping plate to move closer to or separate from each other. The cross-sections of the inner clamping plate and the outer clamping plate are both rectangular. By adopting inner and outer clamping plates with rectangular and plate-like structures, the space occupied by the clamping plate is smaller, and the probability of the inner side of the battery cell collapsing is reduced. At the same time, the clamping plate is more stable when subjected to stress in the horizontal direction and is not easily deformed, thereby avoiding deformation and wrinkling of the battery cell. In addition, the contact area between the clamping plate and the battery cell is smaller, the clamping force is greater, and the clamping effect is good, which reduces the risk of the inner diaphragm being driven to cause core pulling when the needle is rolled and pulled out.

Description

Technical Field

[0001] The invention relates to the field of lithium battery manufacturing equipment, and in particular to a battery cell blanking and clamping mechanism. Background Art

[0002] At present, the production process of power lithium batteries mainly uses a winding machine to wind positive and negative electrodes and separators to form a battery cell. After the battery cell is wound on the winding needle, it is usually unloaded by a clamping mechanism. The existing unloading clamping mechanism usually clamps the battery cell with inner and outer clamping rollers, and then the winding needle is withdrawn to achieve unloading. And the current battery cell unloading clamping mechanism has the following problems: 1. The clamping roller is cylindrical, which occupies a large circumferential space of the winding needle, and the inner diaphragm electrode is easy to collapse during the battery cell winding and unloading process; 2. The clamping roller is prone to deformation and fracture in the force direction, resulting in one end not being clamped tightly, and the inner side of the battery cell is prone to wrinkling during pre-pressing; 3. The contact area between the clamping roller and the arc surface of the battery cell is large, and the clamping force per unit area is small. When the winding needle is withdrawn, it is easy to drive the inner diaphragm, causing the battery cell to be scrapped. Summary of the invention

[0003] The purpose of the present invention is to provide a battery cell unloading clamping mechanism and a winding device, which adopts a rectangular clamping plate structure, so that the circumferential space occupied is small, the battery cell is not easy to collapse, and is not easy to deform, the surface of the battery cell is not easy to wrinkle, and the clamping force is large, the clamping effect is good, and the risk of core pulling caused by the inner diaphragm being driven when the winding needle is pulled out is reduced.

[0004] The embodiments of the present invention can be implemented as follows:

[0005] In the first aspect, an embodiment of the present invention provides a battery cell unloading clamping mechanism, comprising an inner clamping plate, an outer clamping plate and a clamping drive mechanism, wherein the inner clamping plate and the outer clamping plate are arranged opposite to each other, and the clamping drive mechanism is transmission-connected to the inner clamping plate and the outer clamping plate at the same time, and is used to drive the inner clamping plate and the outer clamping plate to move closer to or separate from each other to clamp or release the battery cell, and the cross-sections of the inner clamping plate and the outer clamping plate are both rectangular.

[0006] In an optional embodiment, an edge of one side of the inner splint close to the outer splint is arc-shaped.

[0007] In an optional embodiment, the battery cell unloading clamping mechanism further includes a first mounting seat, the first mounting seat is transmission-connected to the clamping drive mechanism, and the outer clamping plate is fixedly mounted on the first mounting seat for moving under the drive of the first mounting seat.

[0008] In an optional embodiment, the battery cell unloading clamping mechanism further includes a second mounting seat, the second mounting seat is transmission-connected to the clamping drive mechanism, and the inner clamping plate is fixedly mounted on the second mounting seat for moving driven by the second mounting seat.

[0009] In an optional embodiment, a first limiting groove is formed on the first mounting seat, and the end of the outer clamping plate can be detachably assembled in the first limiting groove; a second limiting groove is formed on the second mounting seat, and the end of the inner clamping plate can be detachably assembled in the second limiting groove.

[0010] In an optional embodiment, the width of the first limit groove matches the end of the outer clamping plate, and the first limit groove is used to limit the end of the outer clamping plate; the width of the second limit groove matches the end of the inner clamping plate, and the second limit groove is used to limit the end of the inner clamping plate.

[0011] In an optional embodiment, the end of the outer clamping plate is fixed in the first limiting groove by at least two first screws; the end of the inner clamping plate is fixed in the second limiting groove by at least two second screws.

[0012] In an optional embodiment, the first mounting seat is arranged on the top of the clamping drive mechanism, a bearing plate is movably arranged at the bottom of the clamping drive mechanism, the second mounting seat is arranged on the bearing plate, and the top of the first mounting seat is flush with the top of the second mounting seat.

[0013] In an optional embodiment, a rubber coating layer is provided on an edge of one side of the outer splint close to the inner splint.

[0014] The beneficial effects of the embodiments of the present invention include, for example:

[0015] The battery cell unloading clamping mechanism provided by the present invention adopts inner and outer clamping plates with rectangular and plate-like structures, so that the space occupied by the clamping plates is smaller than that of a cylindrical structure. Therefore, the space reserved for the clamping plates on the winding needle can be smaller, reducing the probability of collapse of the inner side of the battery cell. At the same time, the rectangular structure is adopted, so that the clamping plates are more stable and less likely to deform when subjected to stress in the horizontal direction, thereby avoiding wrinkling on the surface of the battery cell. In addition, the contact area between the clamping plates and the battery cell is smaller, the clamping force is greater, and the clamping effect is good, thereby reducing the risk of core pulling due to the inner diaphragm being driven when the winding needle is pulled out. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required for use in the embodiments are briefly introduced below. It should be understood that the following drawings only show certain embodiments of the present invention and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other related drawings can be obtained based on these drawings without creative work.

[0017] Figure 1A schematic structural diagram of a battery cell blanking and clamping mechanism provided by the first embodiment of the present invention at a first viewing angle;

[0018] Figure 2 A schematic structural diagram of the battery cell blanking and clamping mechanism provided by the first embodiment of the present invention at a second viewing angle;

[0019] Figure 3 A schematic diagram of the assembly structure of the battery cell blanking and clamping mechanism provided in the first embodiment of the present invention;

[0020] Figure 4 A schematic structural diagram of the battery cell blanking and clamping mechanism provided by the first embodiment of the present invention at a third viewing angle;

[0021] Figure 5 for Figure 1 Schematic diagram of the structure of the medial splint;

[0022] Figure 6 for Figure 1 Schematic diagram of the structure of the mediolateral splint;

[0023] Figure 7 A schematic structural diagram of a winding device provided in the second embodiment of the present invention.

[0024] Icons: 100-battery cell unloading clamping mechanism; 110-inner clamping plate; 111-second clamping part; 113-second connecting part; 115-second screw hole; 130-outer clamping plate; 131-first clamping part; 133-first connecting part; 135-first screw hole; 137-rubber coating; 150-clamping drive mechanism; 170-first mounting seat; 171-first limiting groove; 190-second mounting seat; 191-second limiting groove; 193-carrying plate; 200-winding device; 210-winding needle mechanism; 300-battery cell. DETAILED DESCRIPTION

[0025] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Generally, the components of the embodiments of the present invention described and shown in the drawings here can be arranged and designed in various different configurations.

[0026] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the invention claimed for protection, but merely represents selected embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0027] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, further definition and explanation thereof is not required in subsequent drawings.

[0028] In the description of the present invention, it should be noted that if the terms "upper", "lower", "inside", "outside", etc. appear to indicate an orientation or position relationship, they are based on the orientation or position relationship shown in the accompanying drawings, or are the orientation or position relationship in which the product of the invention is usually placed when used. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0029] In addition, the terms “first”, “second”, etc., if used, are merely used to distinguish between the descriptions and should not be understood as indicating or implying relative importance.

[0030] As disclosed in the background technology, the winding needle mechanism of the existing winding machine usually uses a cylindrical clamping roller to clamp the battery cell when the reel is withdrawn. Due to the shape of the cylindrical clamping roller, its ability to withstand horizontal stress is poor, and it is easy to deform when subjected to force, resulting in a situation where the clamping is not tight, which makes it easy for the battery cell to wrinkle on the inside during pre-pressing. In addition, in order to ensure its clamping force, the radius of the cylindrical clamping roller is generally large, and it occupies a large space in the vertical direction. The space reserved for the clamping roller on the winding needle mechanism is also large, which makes the internal cavity larger during winding. The inner diaphragm pole piece is easy to collapse during the winding and unloading process of the battery cell. At the same time, the contact area between the cylindrical clamping roller and the inner diaphragm of the battery cell is large, and the clamping force per unit area is small. When the winding needle is withdrawn, it is easy to drive the inner diaphragm, resulting in failure of core pulling and scrapping of the battery cell.

[0031] In view of the above problems, the present invention provides a battery cell unloading clamping mechanism and a winding device, which adopts a rectangular clamping plate structure, so that the clamping effect is good, it is not easy to deform, and it occupies a small space, so that the space reserved on the winding needle mechanism is relatively small, so that the inner diaphragm pole piece is not easy to collapse during the battery cell winding and unloading process, and the contact area between the clamping roller and the arc surface of the battery cell is relatively small, the clamping force per unit area is large, and it is not easy to drive the inner diaphragm when the winding needle is withdrawn, thereby ensuring the needle pulling effect.

[0032] It should be noted that, in the absence of conflict, the features in the embodiments of the present invention may be combined with each other.

[0033] First embodiment

[0034] Combined participation Figures 1 to 6The present embodiment provides a battery cell unloading clamping mechanism 100, which has good clamping effect, is not easy to deform, and occupies a small space, so that the space reserved on the winding needle mechanism 210 is relatively small, so that the inner diaphragm pole piece is not easy to collapse during the winding and unloading process of the battery cell 300, and the contact area between the clamping roller and the arc surface of the battery cell 300 is relatively small, the clamping force per unit area is large, and it is not easy to drive the inner diaphragm when the winding needle is withdrawn, thereby ensuring the needle pulling effect.

[0035] The battery cell unloading clamping mechanism 100 provided by the present invention includes an inner clamping plate 110, an outer clamping plate 130 and a clamping drive mechanism 150. The inner clamping plate 110 and the outer clamping plate 130 are arranged opposite to each other. The clamping drive mechanism 150 is simultaneously connected to the inner clamping plate 110 and the outer clamping plate 130 for driving the inner clamping plate 110 and the outer clamping plate 130 to move closer to or separate from each other to clamp or release the battery cell 300. The cross-sections of the inner clamping plate 110 and the outer clamping plate 130 are both rectangular.

[0036] In this embodiment, the inner clamping plate 110 and the outer clamping plate 130 are both plate-shaped and have a rectangular cross-section, so that compared with a cylindrical structure, the clamping plate occupies less space, so the space reserved for the clamping plate on the winding needle can be smaller, reducing the probability of collapse of the inner side of the battery cell 300. At the same time, the rectangular structure makes the clamping plate more stable and less likely to deform when subjected to horizontal stress, thereby avoiding wrinkling of the surface of the battery cell 300 due to deformation of the clamping plate, and the contact area between the clamping plate and the battery cell 300 is smaller, the clamping force is greater, the clamping effect is good, and the needle pulling action is convenient.

[0037] It should be noted that, in actual use, there are two battery cell unloading clamping mechanisms 100, the two inner clamping plates 110 are respectively abutted against the inner sides of the battery cell 300, and the two outer clamping plates 130 are respectively abutted against the outer sides of the battery cell 300, thereby clamping the battery cell 300 from two locations.

[0038] It should also be noted that in this embodiment, the cross-section of the inner splint 110 and the outer splint 130 is rectangular, which refers to the cross-sectional shape of the inner splint 110 and the outer splint 130 along the direction perpendicular to the long axis, that is, the cross-sectional shape along the needle pulling direction perpendicular to the needle winding mechanism is rectangular.

[0039] In this embodiment, the edge of one side of the inner clamping plate 110 close to the outer clamping plate 130 is arc-shaped. Specifically, the inner clamping plate 110 is made of metal or alloy material, such as aluminum alloy, to improve its rigidity in the force direction, and at the same time, the edge of one side for abutment is rounded to prevent the inner clamping plate 110 from scratching the inner diaphragm of the battery cell 300.

[0040] Furthermore, the battery cell unloading clamping mechanism 100 further includes a first mounting seat 170 and a second mounting seat 190, wherein the first mounting seat 170 is in transmission connection with the clamping drive mechanism 150, and the outer clamping plate 130 is fixedly mounted on the first mounting seat 170, and is used to move under the drive of the first mounting seat 170. The second mounting seat 190 is in transmission connection with the clamping drive mechanism 150, and the inner clamping plate 110 is fixedly mounted on the second mounting seat 190, and is used to move under the drive of the second mounting seat 190.

[0041] In this embodiment, during actual operation, the clamping drive mechanism 150 synchronously drives the first mounting seat 170 and the second mounting seat 190 to move, and the first mounting seat 170 and the second mounting seat 190 move relatively close to each other under the drive of the clamping drive mechanism 150, thereby respectively driving the inner clamping plate 110 and the outer clamping plate 130 to move relatively close to each other, and respectively abut against the inner and outer sides of the battery cell 300, thereby realizing the clamping action of the battery cell 300.

[0042] In this embodiment, a first limiting groove 171 is formed on the first mounting seat 170, and the end of the outer clamping plate 130 can be detachably assembled in the first limiting groove 171; a second limiting groove 191 is formed on the second mounting seat 190, and the end of the inner clamping plate 110 can be detachably assembled in the second limiting groove 191.

[0043] It should be noted that the width of the first limiting groove 171 matches the end of the outer clamping plate 130, and the first limiting groove 171 is used to limit the end of the outer clamping plate 130; the width of the second limiting groove 191 matches the end of the inner clamping plate 110, and the second limiting groove 191 is used to limit the end of the inner clamping plate 110.

[0044] In this embodiment, the end of the outer clamping plate 130 is fixed in the first limiting groove 171 by at least two first screws; the end of the inner clamping plate 110 is fixed in the second limiting groove 191 by at least two second screws.

[0045] The outer clamping plate 130 includes an integrally formed first clamping portion 131 and a first connecting portion 133, wherein the first clamping portion 131 is used to abut against the outer surface of the battery cell 300, and the first connecting portion 133 is provided with two first screw holes 135 and is fixed in the first limiting groove 171 by two first screws, wherein the connecting direction of the two first screw holes 135 is parallel to the extending direction of the first clamping portion 131, so that the first connection 133 can be fixed in the first limiting groove 171, and after being fixed by the first screw, the first screw can bear force in the horizontal direction, thereby preventing the first clamping portion 131 from loosening in the horizontal direction. Of course, the number of the first screws is not specifically limited here.

[0046] It should be noted that in this embodiment, the outer clamping plate 130 is also made of metal or alloy and has high structural strength. At the same time, the first connecting portion 133 and the first clamping portion 131 are in the shape of a gun stock, so that the first clamping portion 131 is offset inwardly relative to the first connecting portion 133, ensuring that the first clamping portion 131 can be supported on the outer surface of the battery cell 300 and preventing the first connecting portion 133 from interfering with the travel of the first clamping portion 131.

[0047] The inner clamping plate 110 includes an integrally formed second clamping portion 111 and a second connecting portion 113, the second clamping portion 111 is used to extend into the interior of the needle winding mechanism 210 and abut against the inner surface of the battery cell 300, the second connecting portion 113 is provided with at least two second screw holes 115, and is fixed in the second limiting groove 191 by two second screws, wherein the connecting direction of the two second screw holes 115 is parallel to the extending direction of the second clamping portion 111, so that the second connecting portion 113 can be fixed in the second limiting groove 191, and after being fixed by the second screw, the second screw can bear force in the horizontal direction, preventing the second clamping portion 111 from loosening in the horizontal direction. Of course, the number of the second screws is not specifically limited here.

[0048] In this embodiment, the first connection portion 133 and the second connection portion 113 are arranged opposite to each other and a clamping channel is formed therebetween, and the first connection portion 133 and the second connection portion 113 move closer to or away from each other under the driving action of the clamping drive mechanism 150 to clamp or loosen the battery cell 300.

[0049] It should be noted that in this embodiment, the second connecting portion 113 does not need to extend into the interior of the needle winding mechanism 210, so the thickness and width of the second connecting portion 113 are greater than the second clamping portion 111, so that it can be firmly installed in the second limiting groove 191, wherein the width of the second limiting groove 191 matches the width of the second connecting portion 113, so that the second connecting portion 113 can be assembled in the second limiting groove 191, so that the side wall of the second limiting groove 191 further limits the second connecting portion 113 to prevent it from loosening to the left or right.

[0050] In this embodiment, the first mounting seat 170 is arranged at the top of the clamping drive mechanism 150, and a bearing plate 193 is movably arranged at the bottom of the clamping drive mechanism 150. The second mounting seat 190 is arranged on the bearing plate 193, and the top of the first mounting seat 170 is flush with the top of the second mounting seat 190. Specifically, the first mounting seat 170 is slidably arranged at the top of the clamping drive mechanism 150 through a slide rail, and the bearing plate 193 is slidably arranged at the bottom of the clamping drive mechanism 150 through a slide rail. The clamping drive mechanism 150 can simultaneously drive the first mounting seat 170 and the bearing plate 193 to move, so that the first mounting seat 170 and the second mounting seat 190 move toward or away from each other, so that the inner clamping plate 110 and the outer clamping plate 130 clamp or release the battery cell 300.

[0051] The clamping drive mechanism 150 is driven by a cylinder, and includes a cylinder body and a piston rod, wherein the cylinder body bearing plate 193 is fixedly connected, and the end of the piston rod is fixedly connected to the first mounting seat 170, so that the relative movement between the first mounting seat 170 and the second mounting seat 190 is achieved through the relative movement between the cylinder body and the piston rod. The structure and driving principle of the clamping drive mechanism 150 here are consistent with those of the existing clamping roller drive mechanism, and will not be described in detail here. Of course, the clamping drive mechanism 150 here can also be driven by other driving parts such as a hydraulic cylinder or an electric push rod, and this is not specifically limited.

[0052] In this embodiment, a rubber coating layer 137 is provided on one side edge of the outer clamping plate 130 close to the inner clamping plate 110. Specifically, the rubber coating layer 137 is provided on one side edge of the first connecting portion 133 close to the second connecting portion 113, and the contact surface between the rubber coating layer 137 and the battery cell 300 is a cut-angle structure. By providing the rubber coating layer 137, it is possible to prevent the metal edge of the first connecting portion 133 from scratching the outer surface of the battery cell 300.

[0053] In this embodiment, a receiving groove is provided at the edge of the first connection portion 133, and the receiving groove passes through the first connection portion 133 along its extension direction, and the rubber layer 137 is partially embedded in the receiving groove to ensure the stability of its structure. At the same time, when the rubber layer 137 is worn after long-term use, the rubber layer 137 can be directly torn off and a new rubber layer 137 can be reapplied, which is very convenient.

[0054] The present embodiment provides a battery cell unloading clamping mechanism 100, and its working principle is as follows: after the core is rolled, the two inner clamping plates 110 extend into the make way holes on both sides of the inner part of the core rolling mechanism, and at the same time, the two outer clamping plates 130 are arranged close to each other on both sides of the outer part of the battery cell 300. Under the synchronous action of the two clamping drive mechanisms 150, the inner clamping plates 110 and the corresponding outer clamping plates 130 move close to each other, thereby respectively abutting against the inner and outer sides of the battery cell 300, thereby realizing the clamping action of the battery cell 300, and then the needle pulling action is performed to complete the unloading of the battery cell 300. Since both the outer clamping plate 130 and the inner clamping plate 110 adopt a rectangular plate structure, they occupy less space, resulting in a smaller space for clearance on the winding core mechanism. When the winding core is in action, the cavity inside the battery cell 300 is smaller and less likely to collapse. At the same time, the rectangular structure makes the clamping plate more stable and less likely to deform when subjected to horizontal stress, thereby avoiding wrinkling of the surface of the battery cell 300 due to deformation of the clamping plate. In addition, the contact area between the clamping plate and the battery cell 300 is smaller, the clamping force is greater, the clamping effect is good, and the needle removal action is convenient.

[0055] Second embodiment

[0056] See also Figure 7 The present embodiment provides a winding device 200, including a winding needle mechanism 210 and a battery cell unloading and clamping mechanism 100, wherein the battery cell unloading and clamping mechanism 100, wherein the basic structure and principle and the technical effect produced by the battery cell unloading and clamping mechanism 100 are the same as those of the first embodiment. For the sake of brief description, for parts not mentioned in this embodiment, reference may be made to the corresponding contents in the first embodiment.

[0057] In this embodiment, the battery cell unloading clamping mechanism 100 includes an inner clamping plate 110, an outer clamping plate 130 and a clamping drive mechanism 150. The inner clamping plate 110 and the outer clamping plate 130 are arranged opposite to each other. The clamping drive mechanism 150 is connected to the inner clamping plate 110 and the outer clamping plate 130 at the same time, and is used to drive the inner clamping plate 110 and the outer clamping plate 130 to move closer to or separate from each other to clamp or release the battery cell 300. The cross-sections of the inner clamping plate 110 and the outer clamping plate 130 are both rectangular. The winding needle mechanism 210 is used to wind the battery cell 300, and the inner clamping plate 110 is used to extend between the winding needle mechanism 210 and the battery cell 300.

[0058] The winding needle mechanism 210 includes two winding needles, which are respectively in an arc shape and can approach or move away from each other. When the two winding needles move away from each other, their outer circumferences are circular surfaces, which facilitate winding to form the battery cell 300. After winding, the two winding needles approach each other, so that the winding needles and the battery cell 300 are separated, which facilitates needle pulling. After the winding needles approach each other, the inner clamping plate 110 and the outer clamping plate 130 are moved to the inner side and the outer side of the battery cell 300 respectively, wherein the inner clamping plate 110 extends into the reserved clearance hole on the winding needle. After the battery cell 300 is clamped by the inner clamping plate 110 and the outer clamping plate 130, the two winding needles are pulled backwards to complete the needle pulling action and realize the unloading of the battery cell 300. The specific process and principle can refer to the existing unloading process.

[0059] The winding device 200 provided in this embodiment, by configuring the inner clamping plate 110 and the outer clamping plate 130 to be rectangular, occupies less space, so that the clearance hole on the winding needle can be made smaller, and the battery cell 300 is less likely to collapse during winding. At the same time, the rectangular structure is adopted, so that the clamping plate is more stable and less likely to deform when subjected to horizontal stress, thereby avoiding wrinkling of the surface of the battery cell 300 due to deformation of the clamping plate, and the contact area between the clamping plate and the battery cell 300 is smaller, the clamping force is greater, the clamping effect is good, and the needle pulling action is convenient.

[0060] The above is only a specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any changes or substitutions that can be easily thought of by a person skilled in the art within the technical scope disclosed by the present invention should be included in the protection scope of the present invention. Therefore, the protection scope of the present invention should be based on the protection scope of the claims.

Claims

1. A battery cell blanking and clamping mechanism, characterized in that: It includes an inner clamping plate, an outer clamping plate and a clamping drive mechanism, wherein the inner clamping plate and the outer clamping plate are arranged opposite to each other, and the clamping drive mechanism is connected to the inner clamping plate and the outer clamping plate at the same time, and is used to drive the inner clamping plate and the outer clamping plate to move closer to or separate from each other to clamp or release the battery cell, and the cross-sections of the inner clamping plate and the outer clamping plate are both rectangular; The battery cell unloading clamping mechanism further includes a first mounting seat, the first mounting seat is transmission-connected to the clamping drive mechanism, and the outer clamping plate is fixedly mounted on the first mounting seat and is used to move under the drive of the first mounting seat; Among them, the outer clamping plate includes an integrally formed first clamping portion and a first connecting portion, the first clamping portion is used to abut against the outer surface of the battery core, the first connecting portion is arranged on the first mounting seat, and the first connecting portion and the first clamping portion are in the shape of a buttstock, so that the first clamping portion is offset inwardly relative to the first connecting portion.

2. The battery core blanking and clamping mechanism according to claim 1, characterized in that: An edge of one side of the inner clamping plate close to the outer clamping plate is arc-shaped.

3. The battery core blanking and clamping mechanism according to claim 1, characterized in that: The battery cell unloading clamping mechanism also includes a second mounting seat, which is transmission-connected to the clamping drive mechanism, and the inner clamping plate is fixedly mounted on the second mounting seat for moving under the drive of the second mounting seat.

4. The battery core blanking and clamping mechanism according to claim 3, characterized in that: The first mounting seat is provided with a first limiting groove, in which the end of the outer clamping plate can be detachably assembled; the second mounting seat is provided with a second limiting groove, in which the end of the inner clamping plate can be detachably assembled.

5. The battery cell blanking and clamping mechanism according to claim 4, characterized in that: The width of the first limiting groove matches the end of the outer clamping plate, and the first limiting groove is used to limit the end of the outer clamping plate; the width of the second limiting groove matches the end of the inner clamping plate, and the second limiting groove is used to limit the end of the inner clamping plate.

6. The battery core blanking and clamping mechanism according to claim 4, characterized in that: The end of the outer clamping plate is fixed in the first limiting groove by at least two first screws; the end of the inner clamping plate is fixed in the second limiting groove by at least two second screws.

7. The battery core blanking and clamping mechanism according to claim 3, characterized in that: The first mounting seat is arranged on the top of the clamping drive mechanism, a bearing plate is movably arranged on the bottom of the clamping drive mechanism, the second mounting seat is arranged on the bearing plate, and the top of the first mounting seat is flush with the top of the second mounting seat.

8. The battery core blanking and clamping mechanism according to claim 1, characterized in that: A rubber coating layer is provided on one side edge of the outer splint close to the inner splint.

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