Feeding mechanism and lithium battery cell winding equipment

Abstract

The utility model relates to the technical field of lithium battery cell winding equipment, in particular to a feeding mechanism and lithium battery cell winding equipment. The feeding mechanism comprises a mechanism body and a clamping assembly, the clamping assembly comprises a clamping plate seat and two oppositely arranged clamping plates, and the clamping plates are connected with the mechanism body through the clamping plate seat; the mechanism body is used for conveying pole pieces, and a clamping space is formed between the two clamping plates; the clamping plate is provided with a clamping surface covering a pole piece conveying path, and the clamping plate is connected with the clamping plate seat through a position different from that of the clamping surface. The clamping plate is connected with the clamping plate seat through the area outside the clamping surface on the clamping plate, so that the problem that the pole piece is damaged due to loosening of a screw in the prior art can be solved while the pole piece is clamped and prevented from deflecting, and the quality and the safety of the lithium ion battery can be improved.

Description

Technical Field

[0001] The utility model relates to the technical field of lithium battery core winding equipment, and in particular to a feeding mechanism and a lithium battery core winding equipment. Background Art

[0002] Lithium battery cell winding equipment is a kind of equipment used to produce lithium-ion batteries. Its function is to wind the positive and negative electrode sheets and separators together to form the battery cells of lithium-ion batteries. Among them, lithium battery cell winding equipment generally includes unwinding mechanism, feeding mechanism, winding mechanism and rewinding mechanism. The unwinding mechanism is used to place raw materials (electrode sheets), the feeding mechanism is used to feed the raw materials into the winding mechanism, the winding mechanism is used to wind the positive and negative electrode sheets and separators together to obtain the battery cells of lithium-ion batteries, and the rewinding mechanism is used to collect the wound battery cells.

[0003] The discharge end of the feeding mechanism is generally provided with a clamping plate assembly, which includes a clamping plate seat and two oppositely arranged clamping plates. The clamping plate is installed on the equipment body through the clamping plate seat, and the raw material is located between the two clamping plates. By setting the clamping plate assembly, the raw material can be clamped, thereby preventing the head of the raw material from swaying during the transportation process.

[0004] In the prior art, the clamp and clamp seat are generally separated and connected by screws. During the production process, due to the high frequency of the feeding mechanism, the screws are prone to loosening. When the screws are loose, they will protrude from the surface of the clamp and crush the surface of the raw material. If the subsequent winding mechanism rolls the damaged raw material into a battery cell, it will affect the quality of the subsequent lithium-ion battery and there is a risk of explosion during use. Utility Model Content

[0005] (I) The problem to be solved by the utility model is that the screws of the existing clamping plate assembly are easy to loosen during use, resulting in the surface of the raw material being easily damaged, affecting the safety of the subsequently manufactured lithium-ion battery.

[0006] (II) Technical solution

[0007] In order to solve the above technical problems, the utility model provides a feeding mechanism in one embodiment, the feeding mechanism includes a mechanism body and a clamping assembly, the clamping assembly includes a clamping plate seat and two clamping plates arranged opposite to each other, the clamping plates are connected to the mechanism body through the clamping plate seat;

[0008] The clamping plate has a clamping surface covering the pole piece conveying path, and the clamping plate is connected to the clamping plate seat at a position different from the clamping surface.

[0009] Furthermore, the width dimension of the clamping plate is greater than or equal to the width dimension of the pole piece.

[0010] Furthermore, the clamping plate and the clamping plate seat are integrally formed, the clamping plate seat is a plate-like structure, and at least one clamping plate seat is provided on each clamping plate along the width direction of the clamping plate.

[0011] Furthermore, the material of the clamping plate and the clamping plate seat are both manganese-plated steel fluorocarbon.

[0012] Furthermore, the clamping plate and the clamping plate seat are separately arranged;

[0013] The clamping plate is divided into a spaced clamping area and a connecting area. The surface of the clamping area facing the pole piece is the clamping surface. The connecting piece for connecting the clamping plate and the clamping plate seat is arranged at the connecting area.

[0014] Furthermore, when the clamping plate and the clamping plate seat are separately provided, each clamping plate is correspondingly provided with at least one clamping plate seat;

[0015] The clamping plate seat comprises a first body and a second body, wherein the first body and the second body are connected;

[0016] The first body is used to be connected to the mechanism body;

[0017] A first connection hole is formed at the connection area, and a second connection hole corresponding to the first connection hole is formed on the second body;

[0018] The second body of the clamping plate and the corresponding clamping plate seat is connected with the first connecting hole and the second connecting hole through the connecting member.

[0019] Furthermore, the material of the plywood is glass fiber.

[0020] Furthermore, along the movement direction of the pole piece in the clamping space, a guide portion is provided on the surface of one of the clamping plates facing the other clamping plate.

[0021] Furthermore, the guide portion is arranged at one end of the clamping plate close to the mechanism body, and the guide portion is arranged on an arc surface of the clamping plate.

[0022] Another aspect of the present invention is to provide a lithium battery cell winding device, comprising the feeding mechanism described in any of the above embodiments.

[0023] Beneficial effects of the utility model:

[0024] The utility model provides a feeding mechanism, which includes a mechanism body and a clamping assembly, wherein the clamping assembly includes a clamping plate seat and two clamping plates arranged opposite to each other, wherein the clamping plates are connected to the mechanism body through the clamping plate seat; the mechanism body is used to convey the electrode sheet, and a clamping space for clamping the electrode sheet is formed between the two clamping plates; the clamping plate has a clamping surface covering the electrode sheet transmission path, and the clamping plate is connected to the clamping plate seat through a position different from the clamping surface.

[0025] The clamp is connected to the clamp seat through the area outside the clamping surface of the clamp. In this way, while the clamp can clamp the pole piece to prevent the pole piece from swinging, it can also solve the problem of damage to the pole piece due to loose screws in the prior art, which can improve the quality of the manufactured lithium-ion battery and improve the safety of the lithium-ion battery. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] In order to more clearly illustrate the specific implementation methods of the utility model or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0027] Figure 1 A schematic diagram of the structure of the feeding mechanism when the clamping plate and the clamping plate seat are integrally formed according to the embodiment of the utility model Figure 1 ;

[0028] Figure 2 A schematic diagram of the structure of the feeding mechanism when the clamping plate and the clamping plate seat are integrally formed according to the embodiment of the utility model Figure 2 ;

[0029] Figure 3 A schematic diagram of the structure of a clamping plate and a clamping plate seat provided in an embodiment of the utility model, wherein the clamping plate and the clamping plate seat are integrally formed;

[0030] Figure 4 A schematic diagram of the structure of the feeding mechanism when the clamping plate and the clamping plate seat are separately arranged in the embodiment of the utility model Figure 1 ;

[0031] Figure 5 A schematic diagram of the structure of the feeding mechanism when the clamping plate and the clamping plate seat are separately arranged in the embodiment of the utility model Figure 2 ;

[0032] Figure 6 A schematic diagram of the structure of a clamping plate and a clamping plate seat provided in an embodiment of the utility model, wherein the clamping plate and the clamping plate seat are separately arranged;

[0033] Figure 7for Figure 5 A local enlarged view of point A;

[0034] Figure 8 This is a schematic diagram of the structure of a splint provided in an embodiment of the utility model, wherein the splint is a splint in which the splint and the splint seat are separately arranged.

[0035] Icons: 11-mechanism body; 111-conveying roller; 112-conveying space;

[0036] 21- clamping plate; 211- guide part; 212- clamping space; 213- clamping area; 214- connection area; 215- first connection hole; 22- clamping plate seat; 221- first body; 222- second body; 223- second connection hole;

[0037] 3-Pole piece. DETAILED DESCRIPTION

[0038] The technical solution of the utility model will be clearly and completely described below in conjunction with the embodiments. Obviously, the described embodiments are part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0039] like Figures 1 to 8 As shown, on one hand, an embodiment of the utility model provides a feeding mechanism, the feeding mechanism includes a mechanism body 11 and a clamping assembly, the clamping assembly includes a clamping plate seat 22 and two oppositely arranged clamping plates 21, the clamping plates 21 are connected to the mechanism body 11 through the clamping plate seat 22; the mechanism body 11 is used to convey the electrode 3, and a clamping space 212 for clamping the electrode 3 is formed between the two clamping plates 21; the clamping plate 21 has a clamping surface covering the transmission path of the electrode 3, and the clamping plate 21 is connected to the clamping plate seat 22 through a position different from the clamping surface.

[0040] In this embodiment, the feeding mechanism is used to drive the pole piece 3 to move along a preset direction so as to transport the pole piece 3 to the winding mechanism of the lithium battery cell winding device. The pole piece 3 can be the pole piece 3 of the positive electrode of the lithium ion battery or the pole piece 3 of the negative electrode of the lithium ion battery.

[0041] The feeding mechanism includes a mechanism body 11 and a clamping assembly. The clamping assembly is mounted on the mechanism body 11. The main body used to drive the pole piece 3 to move along a preset direction is the mechanism body 11. Figure 1 In the embodiment, the mechanism body 11 is used to drive the pole piece 3 to move from top to bottom, so as to transport the pole piece 3 to the subsequent winding mechanism. The clamping assembly is arranged at the discharge end of the mechanism body 11, and the clamping assembly is used to clamp the pole piece 3, so as to prevent the head of the pole piece 3 from swinging.

[0042] Furthermore, the mechanism body 11 includes a frame, a conveying roller 111 and a driving unit for driving the conveying roller 111 to rotate. Two conveying rollers 111 are provided, and both conveying rollers 111 are rotatably mounted on the frame, and the two conveying rollers 111 are spaced apart on the frame. A conveying space 112 is formed between the two conveying rollers 111, and the pole piece 3 is located in the conveying space 112. The driving unit can be an electric motor or a hydraulic motor, etc., and the driving unit is connected to at least one of the two conveying rollers 111 by means of a gear or a sprocket chain transmission. By driving at least one of the two conveying rollers 111 to rotate through the driving unit, it is possible to drive the pole piece 3 located in the conveying space 112 to move in a preset direction.

[0043] A clamping space 212 is formed in the clamping assembly, and one end of the clamping space 212 is connected to the conveying space 112. When in use, after the pole piece 3 leaves the conveying space 112, the pole piece 3 directly enters the clamping space 212. Under the action of the clamping space 212, the head of the pole piece 3 can be prevented from swinging. In addition, in order for the pole piece 3 to pass through the clamping space 212 smoothly, the height dimension of the clamping space 212 needs to be greater than the height dimension of the pole piece 3.

[0044] Specifically, in this embodiment, the clamping assembly includes a clamping plate 21 and a clamping plate seat 22, and the number of the clamping plates 21 is two. The two clamping plates 21 are arranged opposite to each other, so that the clamping space 212 is formed between the two clamping plates 21. The clamping plate 21 is installed on the mechanism body 11 through the clamping plate seat 22 to facilitate the assembly of the clamping plate 21.

[0045] It should be noted that Figure 1 The left and right directions in are the width directions. Figure 1 The direction perpendicular to the paper surface is the height direction.

[0046] Further, in this embodiment, the clamping plate 21 has a clamping surface, wherein the clamping surface on the clamping plate 21 is an area of ​​the two opposing surfaces of the clamping plates 21 used to cover the pole piece 3 during the conveyance of the pole piece 3. For example, the clamping area 213 mentioned below, the surface of the clamping area 213 facing the pole piece 3 is the clamping surface.

[0047] Preferably, in this embodiment, in order to avoid the phenomenon of the pole piece 3 being crushed due to the loosening of the screw, the clamping plate 21 is connected to the clamping plate seat 22 through a position on the clamping plate 21 different from the clamping surface, that is, the clamping plate 21 is connected to the clamping plate seat 22 through an area other than the clamping surface on the clamping plate 21. For example, the clamping plate 21 is connected to the clamping plate seat 22 through the surface opposite to the clamping surface.

[0048] The feeding mechanism provided in this embodiment has the clamping plate 21 connected to the clamping plate seat 22 through the area outside the clamping surface of the clamping plate 21. In this way, the clamping plate 21 can clamp the pole piece 3 to prevent the pole piece 3 from swinging, and can also solve the problem of damaging the pole piece 3 due to loose screws in the prior art, thereby improving the quality of the manufactured lithium-ion battery and improving the safety of the lithium-ion battery. Figure 1 and Figure 4 As shown, the width of the clamping plate 21 is greater than or equal to the width of the pole piece 3 .

[0049] In this embodiment, the width dimension of the clamping plate 21 can be equal to the width dimension of the pole piece 3. In this case, the entire surfaces of the two clamping plates 21 facing each other are the clamping surfaces mentioned above, and the clamping plates 21 can be connected to the clamping plate seat 22 through the surface opposite to the clamping surface. Alternatively, the width dimension of the clamping plate 21 can also be greater than the width dimension of the pole piece 3. In this case, an installation position can be provided for a connector for connecting the clamping plate 21 and the clamping plate seat 22.

[0050] Preferably, in the present embodiment, the width of the clamping plate 21 is larger than the width of the pole piece 3 , so that the feeding mechanism can adapt to pole pieces 3 of different widths, thereby improving the applicability of the feeding mechanism.

[0051] Optionally, the feeding mechanism provided in the embodiment of the utility model is as follows: Figures 1 to 3 As shown, the clamping plate 21 and the clamping plate seat 22 are integrally formed, the clamping plate seat 22 is a plate-shaped structure, and at least one clamping plate seat 22 is provided on each clamping plate 21 along the width direction of the clamping plate 21 .

[0052] In this embodiment, the clamping plate 21 and the clamping plate seat 22 are integrally formed, so that there is no need to set a connecting structure on the clamping plate 21 for connecting with the clamping plate seat 22, thereby solving the problem of loose screws and damaging the pole piece 3 in the prior art.

[0053] Preferably, in this embodiment, when the clamping plate 21 and the clamping plate seat 22 are integrally formed, the clamping plate seat 22 is disposed on the surface opposite to the clamping surface to facilitate assembly of the clamping plate 21 .

[0054] When the splint 21 and the splint seat 22 are formed in an integral manner, the splint seat 22 is a plate-like structure. For example, the splint seat 22 can be a rectangular plate, or the splint seat 22 is an L-shaped plate, etc. In the present embodiment, the splint seat 22 is a rectangular plate, so that the splint seat 22 can be more firmly and reliably connected to the mechanism body 11. The number of splint seats 22 provided on each splint 21 is at least one. Preferably, in order to further improve the firmness of the splint 21 on the mechanism body 11, a plurality of splint seats 22 are provided on each splint 21, and the splint seats 22 on the splint 21 are spaced apart along the width direction of the splint 21 so that the splint 21 is evenly stressed.

[0055] Furthermore, in this embodiment, each clamping plate seat 22 is provided with a plurality of through holes, and the mechanism body 11 is provided with a plurality of screw holes corresponding to the through holes on the clamping plate seat 22. During assembly, the clamping plate seat 22 is attached to the mechanism body 11, at which time, the through holes on the clamping plate seat 22 are connected with the corresponding screw holes on the mechanism body 11, and then one end of the screw is passed through the through hole on the clamping plate seat 22 and screwed into the screw hole on the mechanism body 11, so that the clamping plate seat 22 can be fixed to the mechanism body 11.

[0056] It is understandable that, in this embodiment, the clamping plate seat 22 can also be a frame-type structure, which surrounds the circumference of the two clamping plates 21, and can also achieve the purpose of fixing the clamping plates 21 on the mechanism body 11 in this embodiment.

[0057] Preferably, in this embodiment, when the clamping plate 21 and the clamping plate seat 22 are formed in an integral manner, the materials of the clamping plate 21 and the clamping plate seat 22 are both manganese-plated steel fluorine. Among them, manganese-plated steel fluorine is a special material with excellent corrosion resistance and mechanical properties, excellent chemical corrosion resistance and hydrolysis resistance, outstanding UV resistance and weather resistance, and good sliding and wear resistance.

[0058] Optionally, the feeding mechanism provided in the embodiment of the utility model is as follows: Figures 4 to 8 As shown, the clamping plate 21 and the clamping plate seat 22 are separately arranged. The clamping plate 21 is divided into a clamping area 213 and a connecting area 214 . The surface of the clamping area 213 facing the pole piece 3 is a clamping surface. The connector for connecting the clamping plate 21 and the clamping plate seat 22 is arranged at the connecting area 214 .

[0059] In this embodiment, the splint 21 and the splint seat 22 can also be set in a separate manner to provide users with a variety of options. When the splint 21 and the splint seat 22 are set in a separate manner, the splint 21 is divided into a spaced clamping area 213 and a connecting area 214. Among them, the clamping area 213 is an area for clamping the pole piece 3, the space between the two clamping areas 213 is the above-mentioned clamping space 212, and the side of the clamping area 213 facing the pole piece 3 is the above-mentioned clamping surface. The connecting area 214 is spaced apart from the clamping area 213, so that when the feeding mechanism is in use, there is no interference between the connecting area 214 and the clamping area 213. When the connector for connecting the splint 21 and the splint seat 22 is set at the clamping area 213, the problem of the pole piece 3 being crushed due to loose screws in the prior art can be solved.

[0060] The feeding mechanism provided by the embodiment of the utility model is as follows: Figures 4 to 8 As shown, when the splint 21 and the splint seat 22 are separately arranged, each splint 21 is correspondingly provided with at least one splint seat 22; the splint seat 22 includes a first body 221 and a second body 222, and the first body 221 and the second body 222 are connected; the first body 221 is used to be connected to the mechanism body 11; a first connecting hole 215 is opened in the connecting area 214, and a second connecting hole 223 corresponding to the first connecting hole 215 is opened on the second body 222; the second body 222 of the splint 21 and the corresponding splint seat 22 is connected with the first connecting hole 215 and the second connecting hole 223 through a connecting piece.

[0061] Furthermore, in this embodiment, when the clamping plate 21 and the clamping plate seat 22 are separately arranged, the clamping plate seat 22 includes a first body 221 and a second body 222. The first body 221 is used to connect with the mechanism body 11, and the second body 222 is used to connect with the clamping plate 21. The first body 221 and the second body 222 are both plate-like structures, and at this time, the cross-section of the clamping plate seat 22 is L-shaped.

[0062] Furthermore, in this embodiment, a plurality of through holes are formed on the first body 221, and a plurality of screw holes corresponding to the through holes on the first body 221 are formed on the mechanism body 11. During assembly, the first body 221 is attached to the mechanism body 11, and at this time, the through holes on the first body 221 are connected to the corresponding screw holes on the mechanism body 11. After that, one end of the screw is passed through the through hole on the first body 221 and screwed into the screw hole on the mechanism body 11, so that the clamping plate seat 22 can be fixed to the mechanism body 11.

[0063] Preferably, in this embodiment, the above-mentioned connecting member is a screw, which has a simple structure, is easy to fix, and has a low cost. Correspondingly, the second body 222 is also provided with a plurality of through holes, and the connection area 214 is provided with a plurality of screw holes corresponding to the through holes on the second body 222. During assembly, the clamping plate 21 is attached to the second body 222. At this time, the through holes on the second body 222 are connected to the corresponding screw holes in the connection area 214. Afterwards, one end of the screw is passed through the through hole on the second body 222 and screwed into the screw hole in the connection area 214, so that the clamping plate 21 can be fixed to the second body 222.

[0064] It is understandable that, in the present embodiment, the connecting member may also be a U-shaped clip or other structure, which can also achieve the purpose of connecting the clamping plate 21 with the clamping plate seat 22 .

[0065] It is understandable that, in this embodiment, the clamping plate seat 22 can also be a frame-type structure, which surrounds the circumference of the two clamping plates 21, and can also achieve the purpose of fixing the clamping plates 21 on the mechanism body 11 in this embodiment.

[0066] Preferably, in this embodiment, two connection areas 214 are provided, and the two connection areas 214 are distributed on both sides of the clamping area 213 to improve the stability of the installation of the clamping plate 21. One clamping plate seat 22 can be provided. When one clamping plate seat 22 is provided, the clamping plate seat 22 spans the clamping area 213, and both ends are located in the connection area 214 to connect with the connecting piece provided at the connection area. Two clamping plate seats 22 can also be provided. When two clamping plate seats 22 are provided, the two clamping plate seats 22 are provided corresponding to the two clamping areas 213. When assembled, the clamping plate seats 22 are connected to the connecting piece at the corresponding connection area 214.

[0067] Preferably, in this embodiment, when the clamping plate 21 and the clamping plate seat 22 are separately provided, the clamping plate seat 22 can be made of metal, and the clamping plate 21 can be made of glass fiber. Among them, glass fiber is an inorganic non-metallic material, which is made of natural ore, quartz sand, limestone, etc. as the main raw materials, and is processed by high-temperature melting, wire drawing, weaving and post-processing. It has the advantages of light weight, high strength, good insulation, corrosion resistance and good heat insulation.

[0068] The feeding mechanism provided by the embodiment of the utility model is as follows: Figure 7 and Figure 8 As shown, along the movement direction of the pole piece 3 in the clamping space 212 , a guide portion 211 is provided on the surface of one clamping plate 21 opposite to the other clamping plate 21 .

[0069] In this embodiment, a guide portion 211 is further provided on the clamping plate 21, and the guide portion 211 on the clamping plate 21 can provide a buffering effect and a guiding effect, thereby preventing the clamping plate 21 from rigidly contacting the pole piece 3 during the movement of the pole piece 3, thereby preventing the pole piece 3 from being damaged.

[0070] Preferably, in this embodiment, the two clamping plates 21 are both provided with the above-mentioned guide portions 211 , and the guide portions 211 on the two clamping plates 21 are correspondingly arranged.

[0071] In this embodiment, multiple guide portions 211 can be provided along the movement direction of the pole piece 3, or, in order to save costs, the guide portion 211 is provided only at one end where the clamping space 212 is connected to the conveying space 112, thereby avoiding the phenomenon that the pole piece 3 is damaged due to rigid contact with the clamping plate 21 when the pole piece 3 enters the clamping space 212 from the conveying space 112.

[0072] Specifically, in this embodiment, if Figure 7 and Figure 8 As shown, the guide portion 211 is disposed at one end of the clamping plate 21 close to the mechanism body 11 .

[0073] In this embodiment, the pole piece 3 rarely has a rigid contact with the clamping plate 21 when it moves in the clamping space 212. To this end, the guide portion 211 is provided at one end of the clamping plate 21 close to the mechanism body 11, so that when the pole piece 3 leaves the conveying space 112 of the mechanism body 11 and enters the clamping space 212, the pole piece 3 can smoothly enter the clamping space 212 under the buffering and guidance of the guide portion 211 and will not have a rigid contact with the clamping plate 21, thereby effectively preventing the clamping plate 21 from being damaged during the conveying process.

[0074] The feeding mechanism provided by the embodiment of the utility model is as follows: Figure 7 and Figure 8 As shown, the guide portion 211 is an arc-shaped surface provided on the surface of the clamping plate 21 .

[0075] Preferably, in this embodiment, the guide portion 211 is an arc-shaped surface provided on the clamping plate 21 , which has a smooth transition and an excellent guiding effect.

[0076] It is understandable that, in this embodiment, the guide portion 211 may also be an inclined surface provided on the clamping plate 21 , which can also serve the purpose of guiding the pole piece 3 to smoothly enter the clamping space 212 .

[0077] Another aspect of the present invention is to provide a lithium battery cell winding device, comprising the feeding mechanism described in any of the above embodiments.

[0078] It should be noted that the lithium battery cell winding device in this embodiment includes all the advantages of the above-mentioned feeding mechanism, which will not be repeated here.

[0079] In the description of the present invention, it should be noted that the terms "upper" and "lower" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the drawings, and 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 position, be constructed and operated in a specific position, and therefore cannot be understood as limiting the present invention. In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance.

[0080] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be an indirect connection through an intermediate medium, or it can be a connection between the insides of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances. In addition, in the description of the present invention, unless otherwise specified, "plurality" means two or more.

[0081] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A feeding mechanism, comprising a mechanism body (11) and a clamping assembly, wherein the clamping assembly comprises a clamping plate seat (22) and two clamping plates (21) arranged opposite to each other, wherein the clamping plates (21) are connected to the mechanism body (11) via the clamping plate seat (22); The mechanism body (11) is used to transport the pole piece (3), and a clamping space (212) for clamping the pole piece (3) is formed between the two clamping plates (21); It is characterized in that The clamping plate (21) has a clamping surface covering the transmission path of the pole piece (3), and the clamping plate (21) is connected to the clamping plate seat (22) at a position different from the clamping surface.

2. The feeding mechanism according to claim 1, characterized in that: The width dimension of the clamping plate (21) is greater than or equal to the width dimension of the pole piece (3).

3. The feeding mechanism according to claim 1, characterized in that: The clamping plate (21) and the clamping plate seat (22) are integrally formed; the clamping plate seat (22) is a plate-shaped structure; and, along the width direction of the clamping plate (21), at least one clamping plate seat (22) is provided on each clamping plate (21).

4. The feeding mechanism according to claim 3, characterized in that: The material of the clamping plate (21) and the clamping plate seat (22) is manganese-plated steel fluorocarbon.

5. The feeding mechanism according to claim 1, characterized in that: The clamping plate (21) and the clamping plate seat (22) are separately arranged; The clamping plate (21) is divided into a spaced clamping area (213) and a connecting area (214); the surface of the clamping area (213) facing the pole piece (3) is the clamping surface; and a connecting piece for connecting the clamping plate (21) and the clamping plate seat (22) is arranged at the connecting area (214).

6. The feeding mechanism according to claim 5, characterized in that: When the clamping plate (21) and the clamping plate seat (22) are separately provided, each clamping plate (21) is correspondingly provided with at least one clamping plate seat (22); The clamping plate seat (22) comprises a first body (221) and a second body (222), wherein the first body (221) and the second body (222) are connected; The first body (221) is used to be connected to the mechanism body (11); The connection area (214) is provided with a first connection hole (215), and the second body (222) is provided with a second connection hole (223) corresponding to the first connection hole (215); The second body (222) of the clamping plate (21) and the corresponding clamping plate seat (22) is connected to the first connecting hole (215) and the second connecting hole (223) through the connecting member.

7. The feeding mechanism according to claim 6, characterized in that: The material of the clamping plate (21) is glass fiber.

8. The feeding mechanism according to any one of claims 1 to 7, characterized in that: Along the movement direction of the pole piece (3) in the clamping space (212), a guide portion (211) is provided on the surface of one of the clamping plates (21) facing the other clamping plate (21).

9. The feeding mechanism according to claim 8, characterized in that: The guide portion (211) is arranged at one end of the clamping plate (21) close to the mechanism body (11), and the guide portion (211) is an arc-shaped surface arranged on the surface of the clamping plate (21).

10. A lithium battery cell winding device, characterized in that: Comprising the feeding mechanism according to any one of claims 1 to 9.

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