Battery cell hole ironing mechanism and winding machine

Abstract

The utility model belongs to the technical field of battery processing, and particularly relates to a battery cell hole ironing mechanism and a winding machine. The battery cell hole ironing mechanism comprises a base, a clamping assembly, a hole ironing needle assembly, a transferring assembly and a heating assembly, and the clamping assembly is arranged on the base and used for clamping a battery cell; the hole ironing needle assembly is located on one side of the clamping assembly in the first direction, and the hole ironing needle assembly is used for ironing the battery cell out of a needle hole; the transferring assembly is arranged on the base, the hole ironing needle assembly is arranged on the transferring assembly, and the transferring assembly is used for driving the hole ironing needle assembly to move in the first direction; the heating assembly is arranged on the base, located between the clamping assembly and the hole ironing needle assembly in the first direction and used for heating the hole ironing needle assembly. According to the battery cell hole ironing mechanism, the structure and the action process are more reasonable, the debugging and maintenance difficulty is effectively reduced, and the production efficiency is improved.

Description

Technical Field

[0001] This application belongs to the technical field of battery processing, and more specifically, relates to a core punching mechanism and a winding machine. Background Art

[0002] In the production of cylindrical batteries, when the wound core is welded to the bottom of the battery case, the welding needle needs to pass through the central hole, or a central needle needs to be inserted into the battery central hole as required. Therefore, the wound core needs to be punched through a punching mechanism.

[0003] In the existing punching mechanism, a set of moving components are respectively configured for the punching needle and the core. During the punching process, the moving component corresponding to the core drives the core close to the punching needle, and the moving component corresponding to the punching needle drives the punching needle to pass through the heating unit to complete the heating of the punching needle, and then move close to the core to punch the core. Such a setting makes the overall structure of the punching mechanism complex, difficult to debug and maintain, and the core and the punching needle respectively need to move a certain distance, resulting in a slow movement process and a reduction in production efficiency. Summary of the Utility Model

[0004] The purpose of the embodiments of this application is to provide a core punching mechanism to solve the technical problems of the complex structure and slow action process efficiency of the core punching mechanism in the existing technology.

[0005] To achieve the above purpose, the technical solution adopted in this application is:

[0006] In a first aspect, a core punching mechanism is provided, including:

[0007] A base;

[0008] A clamping assembly, which is arranged on the base and is used for clamping the core;

[0009] A punching needle assembly, which is located on one side of the clamping assembly in a first direction and is used for punching a needle hole in the core;

[0010] A transfer assembly, which is arranged on the base, and the punching needle assembly is arranged on the transfer assembly. The transfer assembly is used for driving the punching needle assembly to move along the first direction;

[0011] A heating assembly, which is arranged on the base and is located between the clamping assembly and the punching needle assembly in the first direction. The heating assembly is used for heating the punching needle assembly.

[0012] In one of the embodiments of the first aspect, the transfer assembly includes:

[0013] A transfer seat, the transfer seat is slidably arranged on the base along the first direction, and the hole punching needle assembly is connected to the transfer seat;

[0014] A transfer driving unit, the transfer driving unit is arranged on the base, and the transfer driving unit is used to drive the transfer seat to move along the first direction.

[0015] In one embodiment of the first aspect, the transfer assembly further includes a guiding unit, one end of the guiding unit is connected to the base, the other end of the guiding unit is connected to the hole punching needle assembly, and the guiding unit is used to provide guiding for the movement of the hole punching needle assembly along the first direction.

[0016] In one embodiment of the first aspect, the guiding unit includes:

[0017] A slide rail, the slide rail is arranged on the base;

[0018] A slide block, the slide block is slidably arranged on the slide rail along the first direction, the slide block is connected to the transfer seat, and the hole punching needle assembly is arranged on the slide block.

[0019] In one embodiment of the first aspect, the hole punching needle assembly includes:

[0020] A hole punching needle, one end of the hole punching needle points to the battery cell along the first direction;

[0021] A rotating unit, the rotating unit is arranged on the transfer assembly, and the rotating unit is used to drive the hole punching needle to rotate around the first direction.

[0022] In one embodiment of the first aspect, the rotating unit includes:

[0023] A substrate, the substrate is arranged on the transfer assembly;

[0024] A driving wheel, the driving wheel is rotatably connected to the substrate;

[0025] A driven wheel, the driven wheel is rotatably connected to the substrate, and the hole punching needle is connected to the driven wheel;

[0026] A conveyor belt, the conveyor belt is connected to the driving wheel and the driven wheel;

[0027] A rotation driving motor, the rotation driving motor is arranged on the substrate, and the rotation driving motor drives the driving wheel to rotate.

[0028] In one embodiment of the first aspect, the heating assembly includes:

[0029] A heating base, the heating base is provided on the base, the heating base is provided with two mutually spaced through slots, both of the two through slots penetrate the heating base along the first direction, and the punching needle movably penetrates through one of the through slots along the first direction;

[0030] A heating rod, the heating rod penetrates through the other through slot.

[0031] In one embodiment of the first aspect, two photoelectric sensors are provided on the base, the two photoelectric sensors are spaced apart, and an induction sheet for respectively cooperating with the two photoelectric sensors to limit the moving stroke of the punching needle assembly is provided on the punching needle assembly, and the induction sheet is located between the two photoelectric sensors.

[0032] In one embodiment of the first aspect, the clamping assembly includes:

[0033] Two clamping jaws, the two clamping jaws are used for clamping the battery cell;

[0034] A clamping jaw driving unit, the clamping jaw driving unit is provided on the base, the two clamping jaws are arranged side by side on the clamping jaw driving unit, and the clamping jaw driving unit is used for driving the two clamping jaws to approach or separate from each other.

[0035] The second aspect provides a winding machine, including:

[0036] A battery cell conveying mechanism, the battery cell conveying mechanism is used for placing the battery cell and conveying the battery cell along the second direction;

[0037] A battery cell punching mechanism, the battery cell punching mechanism is the battery cell punching mechanism as described above, the battery cell punching mechanism is arranged on one side of the battery cell conveying mechanism in the first direction, and the clamping assembly is located above the battery cell conveying mechanism.

[0038] Compared with the prior art, the beneficial effects of the battery cell punching mechanism and the winding machine provided by the present application are as follows:

[0039] The battery cell punching mechanism provided by the present application clamps and fixes the battery cell through the clamping assembly, the transfer assembly drives the punching needle assembly to move towards the battery cell along the first direction, during the moving process, the punching needle assembly passes through the heating assembly, the heating assembly heats the punching needle assembly, and the heated punching needle assembly is inserted into the battery cell, thereby punching a needle hole in the battery cell. During the punching process, the battery cell does not need to move, only the punching needle assembly needs to be moved towards the battery cell along the first direction, eliminating the components for driving the battery cell to move, simplifying the structure, making the structure and operation process of the battery cell punching mechanism more reasonable, effectively reducing the difficulty of debugging and maintenance, and improving production efficiency.

[0040] The winding machine provided by this application can make the process of the hole punching process for the battery cell more reasonable through the cooperation of the battery cell conveying mechanism and the battery cell hole punching assembly, eliminating the components for driving a single battery cell to move individually, improving the production efficiency, and realizing chain production. Description of the Drawings

[0041] In order to more clearly illustrate the technical solutions in the embodiments of this application, the following will briefly introduce the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings in the following description are only some embodiments of this application. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0042] Figure 1 It is a schematic three-dimensional structure diagram of the battery cell hole punching mechanism provided by the embodiment of this application;

[0043] Figure 2 It is a schematic three-dimensional structure diagram of the hole punching needle assembly and the transfer assembly provided by the embodiment of this application;

[0044] Figure 3 It is a schematic three-dimensional structure diagram of the battery cell hole punching mechanism removing the transfer assembly provided by the embodiment of this application;

[0045] Figure 4 It is a schematic cross-sectional structure diagram of the heating assembly provided by the embodiment of this application;

[0046] Figure 5 It is a schematic three-dimensional structure diagram of the winding machine provided by the embodiment of this application.

[0047] Among them, the reference numerals in the drawings are as follows:

[0048] 100 - Battery cell hole punching mechanism; 200 - Battery cell conveying mechanism; 300 - Battery cell;

[0049] 1 - Base; 10 - Photoelectric sensor;

[0050] 2 - Clamping assembly; 20 - Claw; 21 - Claw driving unit;

[0051] 3 - Hole punching needle assembly; 30 - Hole punching needle; 31 - Rotating unit; 310 - Substrate; 311 - Driving wheel; 312 - Driven wheel; 313 - Conveyor belt; 314 - Rotating driving motor; 32 - Inductive sheet;

[0052] 4 - Transfer assembly; 40 - Transfer seat; 41 - Transfer driving unit; 42 - Guiding unit; 420 - Slide rail; 4200 - Limiting member; 421 - Slide seat;

[0053] 5 - Heating assembly; 50 - Heating seat; 51 - Heating rod; 52 - Heat insulation board. Detailed implementation manners

[0054] In order to make the technical problems, technical solutions and beneficial effects to be solved by the present application clearer and more understandable, the present application will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present application and are not used to limit the present application.

[0055] It should be noted that when an element is referred to as being "fixed to" or "disposed on" another element, it can be directly on the other element or indirectly on the other element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or indirectly connected to the other element.

[0056] It should be understood that the orientation or positional relationship indicated by the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the accompanying drawings. It is only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus cannot be understood as a limitation to the present application.

[0057] In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include one or more of such features. In the description of the present application, "a plurality of" means two or more, unless otherwise specifically defined.

[0058] Please refer to Figure 1 , and now the cell punching mechanism provided by the embodiment of the present application will be described. The cell punching mechanism 100 includes a base 1, a clamping assembly 2, a punching needle assembly 3, a transfer assembly 4, and a heating assembly 5. The clamping assembly 2 is disposed on the base 1, and the clamping assembly 2 is used to clamp the cell 300. The punching needle assembly 3 is located on one side of the clamping assembly 2 in the first direction, and the punching needle assembly 3 is used to punch a needle hole in the cell 300. The transfer assembly 4 is disposed on the base 1, and the punching needle assembly 3 is disposed on the transfer assembly 4. The transfer assembly 4 is used to drive the punching needle assembly 3 to move in the first direction. The heating assembly 5 is disposed on the base 1, and the heating assembly 5 is located between the clamping assembly 2 and the punching needle assembly 3 in the first direction. The heating assembly 5 is used to heat the punching needle assembly 3.

[0059] The cell punching mechanism 100 provided by the embodiment of the present application, compared with the prior art, clamps and fixes the cell 300 through the clamping assembly 2. The transfer assembly 4 drives the punching needle assembly 3 to move towards the cell 300 in the first direction. During the movement, the punching needle assembly 3 passes through the heating assembly 5, and the heating assembly 5 heats the punching needle assembly 3. The heated punching needle assembly 3 is inserted into the cell 300, thereby punching a needle hole in the cell 300. During the punching process, the cell 300 does not need to move. Only the punching needle assembly 3 needs to be moved towards the cell 300 in the first direction, eliminating the components for driving the movement of the cell 300, simplifying the structure, making the structure and operation process of the cell punching mechanism 100 more reasonable, effectively reducing the difficulty of debugging and maintenance, and improving production efficiency.

[0060] In another embodiment of the present application, please refer to Figure 2 and Figure 3 , the punching needle assembly 3 includes a punching needle 30 and a rotating unit 31. One end of the punching needle 30 points towards the cell 300 in the first direction, so that the punching needle 30 moves closer to or away from the cell 300 in the first direction under the action of the transfer assembly 4. The rotating unit 31 is arranged on the transfer assembly 4, and the rotating unit 31 is used to drive the punching needle 30 to rotate around the first direction. When the transfer assembly 4 drives the punching needle 30 to move towards the cell 300, at the same time, the rotating unit 31 drives the punching needle 30 to rotate, thereby facilitating the punching needle 30 to punch a circular center hole in the cell 300 and keeping the shape of the hole from rebounding, which is convenient for the subsequent assembly and welding of the cell 300 or installing the center pin.

[0061] In another embodiment of the present application, please continue to refer to Figure 2 and Figure 3 , the rotating unit 31 includes a substrate 310, a driving wheel 311, a driven wheel 312, a conveyor belt 313 and a rotation driving motor 314. The substrate 310 is arranged on the transfer assembly 4. The driving wheel 311 is rotatably connected to the substrate 310, the driven wheel 312 is rotatably connected to the substrate 310, the punching needle 30 is connected to the driven wheel 312, and the conveyor belt 313 is connected to the driving wheel 311 and the driven wheel 312. The rotation driving motor 314 is arranged on the substrate 310, and the rotation driving motor 314 drives the driving wheel 311 to rotate. The driving wheel 311 drives the conveyor belt 313 to drive, thereby driving the driven wheel 312 to rotate, and further driving the punching needle 30 to rotate.

[0062] In another embodiment of the present application, please refer to Figure 1 and Figure 2 , the transfer assembly 4 includes a transfer seat 40 and a transfer driving unit 41. The transfer seat 40 is slidably arranged on the base 1 in the first direction. The punching needle assembly 3 is connected to the transfer seat 40, specifically, the substrate 310 is connected to the transfer seat 40. The transfer driving unit 41 is arranged on the base 1, and the transfer driving unit 41 is used to drive the transfer seat 40 to move in the first direction.

[0063] Under the action of the moving drive unit, the transfer seat 40 drives the hole-punching needle assembly 3 to move in the first direction, so that the hole-punching needle assembly 3 can insert into or withdraw from the battery cell 300 clamped by the clamping assembly 2 in the first direction.

[0064] In another embodiment of the present application, the transfer drive unit 41 can be a cylinder, an electric cylinder, an oil cylinder, a screw drive mechanism, a linear motor on a slide table, etc., and is not limited thereto.

[0065] In another embodiment of the present application, please refer to Figure 2 , two photoelectric sensors 10 are provided on the base 1, and the two photoelectric sensors 10 are arranged at intervals. An induction sheet 32 for respectively cooperating with the two photoelectric sensors 10 to limit the moving stroke of the hole-punching needle assembly 3 is provided on the hole-punching needle assembly 3, and the induction sheet 32 is located between the two photoelectric sensors 10. When the induction sheet 32 cooperates with one of the photoelectric sensors 10 for induction, the transfer drive unit 41 stops driving the screw to rotate. At this time, the distance between the clamping assembly 2 and the hole-punching needle assembly 3 is the largest, which is convenient for the clamping assembly 2 to clamp the battery cell 300. When the induction sheet 32 cooperates with the other photoelectric sensor 10 for induction, the transfer drive unit 41 stops driving the screw to rotate. At this time, the distance between the clamping assembly 2 and the hole-punching needle assembly 3 is the smallest, and the hole-punching needle assembly 3 works to perform hole-punching treatment on the battery cell 300. Through the cooperation of the induction sheet 32 and the two photoelectric sensors 10, the stroke of the hole-punching needle assembly 3 can be limited, thereby improving the reliability of the hole-punching treatment and the product yield.

[0066] In another embodiment of the present application, please continue to refer to Figure 2 , the transfer assembly 4 further includes a guiding unit 42. One end of the guiding unit 42 is connected to the base 1, and the other end of the guiding unit 42 is connected to the hole-punching needle assembly 3. The guiding unit 42 is used to provide a guiding effect for the movement of the hole-punching needle assembly 3 in the first direction to improve the movement reliability of the battery cell 300 hole-punching mechanism 100.

[0067] In another embodiment of the present application, please continue to refer to Figure 2 , the guiding unit 42 includes a slide rail 420 and a slide seat 421. The slide rail 420 is provided on the base 1. The slide seat 421 is slidably arranged on the slide rail 420 in the first direction. The slide seat 421 is connected to the transfer seat 40, and the hole-punching needle assembly 3 is provided on the slide seat 421.

[0068] When the transfer seat 40 moves under the action of the transfer drive motor, it drives the slide seat 421 to move on the slide rail 420, thereby driving the hole-punching needle assembly 3 to move. The cooperation of the slide seat 421 and the slide rail 420 can limit the movement of the hole-punching needle assembly 3 only in the first direction, that is, the transfer seat 40 is slidably arranged on the base 1 only in the first direction.

[0069] In another embodiment of the present application, please continue to refer to Figure 2 , limiting members 4200 are provided at both ends of the slide rail 420, and the limiting members 4200 are used to limit the movement of the sliding seat 421 away from the slide rail 420. When the sliding seat 421 moves to the end of the slide rail 420, the sliding seat 421 abuts against the limiting member 4200, thereby restricting the further movement of the sliding seat 421.

[0070] In another embodiment of the present application, please refer to Figure 3 and Figure 4 , the heating assembly 5 includes a heating base 50 and a heating rod 51. The heating base 50 is provided on the base 1. The heating base 50 is provided with two spaced-apart through grooves. Both through grooves penetrate the heating base 50 along the first direction. The punching needle 30 movably penetrates through one of the through grooves along the first direction. The punching needle 30 can be heated after passing through the heating base 50 under the action of the transfer assembly 4 and then punches holes in the battery cell 300. The heating rod 51 penetrates through the other through groove, so that the heating rod 51 uniformly heats the punching needle 30 by means of heat transfer.

[0071] In another embodiment of the present application, please refer to Figure 3 , the heating assembly 5 further includes a heat insulation plate 52. The heat insulation plate 52 is provided between the heating base 50 and the base 1. On the one hand, it reduces the heat loss of the heating base 50, and on the other hand, it avoids damaging the base 1.

[0072] In another embodiment of the present application, please refer to Figure 3 , the clamping assembly 2 includes two clamping jaws 20 and a clamping jaw driving unit 21. The two clamping jaws 20 are used to clamp the battery cell 300. The clamping jaw driving unit 21 is provided on the base 1. The two clamping jaws 20 are arranged in parallel on the clamping jaw driving unit 21. The clamping jaw driving unit 21 is used to drive the two clamping jaws 20 to approach or separate from each other. When the clamping jaw driving unit 21 drives the two clamping jaws 20 to approach each other, the two clamping jaws 20 can cooperate to clamp and fix the battery cell 300; when the clamping jaw driving unit 21 drives the two clamping jaws 20 to separate from each other, the two clamping jaws 20 can release the clamping and fixing of the battery cell 300.

[0073] In another embodiment of the present application, the clamping jaw driving unit 21 can be a cylinder, an electric cylinder, an oil cylinder, etc., and is not limited uniquely here.

[0074] In another embodiment of the present application, please refer to Figure 3 , when the clamping assembly 2 clamps and fixes the battery cell 300, the central axis of the battery cell 300 can be collinear with the central axis of the punching needle 30, ensuring the position requirements during the punching of the battery cell 300 to punch a circular central hole in the battery cell 300, and preventing damage to the battery cell 300 caused by the non-collinearity of the central axes of the punching needle 30 and the battery cell 300, improving the quality of the punching process.

[0075] Please refer toFigure 1 and Figure 5 , the present application also provides a winding machine, which includes a battery cell conveying mechanism 200 and a battery cell punching mechanism 100. The battery cell conveying mechanism 200 is used for placing the battery cell 300 and conveying the battery cell 300 along the second direction. A plurality of placing stations are provided on the battery cell conveying mechanism 200, and a plurality of battery cells 300 can be placed. The battery cell punching mechanism 100 is the battery cell punching mechanism 100 provided in this embodiment. The battery cell punching mechanism 100 is arranged on one side of the battery cell conveying mechanism 200 in the first direction, and the clamping assembly 2 is located above the battery cell conveying mechanism 200.

[0076] By placing the battery cell 300 on the battery cell conveying mechanism 200, feeding and discharging can be realized for the battery cell punching mechanism 100, and the battery cell conveying mechanism 200 can be shared with other processes to realize loading and unloading. That is, after the battery cell 300 reaches the corresponding station of the battery cell punching mechanism 100 under the conveyance of the battery cell conveying mechanism 200 from the previous process, the clamping assembly 2 of the battery cell punching mechanism 100 clamps the battery cell 300 for punching treatment. After the punching treatment is completed, the clamping assembly 2 releases the battery cell 300, and the battery cell 300 continues to enter the next process or is produced under the conveyance of the battery cell conveying mechanism 200.

[0077] For the winding machine provided by the present application, through the cooperation of the battery cell conveying mechanism 200 and the battery cell punching mechanism 100, the punching treatment process of the battery cell 300 can be made more reasonable, the components for driving a single battery cell 300 to move alone are omitted, the production efficiency is improved, and chain production is realized.

[0078] In addition, since the battery cell 300 in the embodiment of the present application is placed on the battery cell conveying mechanism 200, by adjusting the position of the battery cell punching mechanism 100, punching treatment can be adapted to battery cells 300 of different lengths, which increases the practicability and effectively reduces the difficulty of equipment debugging and maintenance.

[0079] The above are only the preferred embodiments of the present application and are not intended to limit the present application. Any modifications, equivalent replacements, and improvements made within the spirit and principle of the present application shall be included within the protection scope of the present application.

Claims

1. A battery core hot hole mechanism, characterized in that: include: Base (1); A clamping assembly (2), the clamping assembly (2) being arranged on the base (1), and the clamping assembly (2) being used to clamp the battery cell (300); A perforating needle assembly (3), the perforating needle assembly (3) being located on one side of the clamping assembly (2) in a first direction, and the perforating needle assembly (3) being used to perforate a pinhole in the battery cell (300); A transfer assembly (4), wherein the transfer assembly (4) is arranged on the base (1), the perforating needle assembly (3) is arranged on the transfer assembly (4), and the transfer assembly (4) is used to drive the perforating needle assembly (3) to move along the first direction; A heating component (5), the heating component (5) is arranged on the base (1), and the heating component (5) is located between the clamping component (2) and the perforating needle component (3) in the first direction, and the heating component (5) is used to heat the perforating needle component (3).

2. The battery core perforation mechanism according to claim 1, characterized in that: The transfer assembly (4) comprises: A transfer seat (40), the transfer seat (40) being slidably disposed on the base (1) along the first direction, and the perforating needle assembly (3) being connected to the transfer seat (40); A transfer drive unit (41), wherein the transfer drive unit (41) is arranged on the base (1), and the transfer drive unit (41) is used to drive the transfer seat (40) to move along the first direction.

3. The battery core perforation mechanism according to claim 2, characterized in that: The transfer assembly (4) further comprises a guide unit (42), one end of the guide unit (42) being connected to the base (1), and the other end of the guide unit (42) being connected to the perforation needle assembly (3), and the guide unit (42) being used to provide a guide for the perforation needle assembly (3) to move along the first direction.

4. The battery core perforation mechanism according to claim 3, characterized in that: The guide unit (42) comprises: A slide rail (420), wherein the slide rail (420) is arranged on the base (1); A slide seat (421), the slide seat (421) is slidably arranged on the slide rail (420) along the first direction, the slide seat (421) is connected to the transfer seat (40), and the perforating needle assembly (3) is arranged on the slide seat (421).

5. The battery core perforation mechanism according to claim 1, characterized in that: The perforating needle assembly (3) comprises: A perforating needle (30), one end of the perforating needle (30) pointing toward the battery core (300) along the first direction; A rotating unit (31), wherein the rotating unit (31) is arranged on the transfer assembly (4), and the rotating unit (31) is used to drive the perforating needle (30) to rotate around the first direction.

6. The battery core perforation mechanism according to claim 5, characterized in that: The rotating unit (31) comprises: A substrate (310), wherein the substrate (310) is disposed on the transfer assembly (4); A driving wheel (311), the driving wheel (311) being rotatably connected to the base plate (310); A driven wheel (312), the driven wheel (312) being rotatably connected to the base plate (310), and the perforating needle (30) being connected to the driven wheel (312); A conveyor belt (313), wherein the conveyor belt (313) is connected to the driving wheel (311) and the driven wheel (312); A rotation drive motor (314), wherein the rotation drive motor (314) is disposed on the substrate (310), and the rotation drive motor (314) drives the driving wheel (311) to rotate.

7. The battery core perforation mechanism according to claim 5, characterized in that: The heating component (5) comprises: A heating seat (50), the heating seat (50) being arranged on the base (1), the heating seat (50) being provided with two through slots spaced apart from each other, the two through slots both passing through the heating seat (50) along the first direction, the perforating needle (30) being movable along the first direction passing through one of the through slots; A heating rod (51), wherein the heating rod (51) passes through another through groove.

8. The battery core perforation mechanism according to claim 1, characterized in that: The base (1) is provided with two photoelectric sensors (10), the two photoelectric sensors (10) are arranged at an interval, the perforating needle assembly (3) is provided with a sensing sheet (32) for respectively cooperating with the two photoelectric sensors (10) to limit the moving stroke of the perforating needle assembly (3), and the sensing sheet (32) is located between the two photoelectric sensors (10).

9. The battery core perforation mechanism according to any one of claims 1 to 8, characterized in that: The clamping assembly (2) comprises: Two clamping jaws (20), the two clamping jaws (20) being used to clamp the battery core (300); A clamping jaw driving unit (21), wherein the clamping jaw driving unit (21) is arranged on the base (1), and the two clamping jaws (20) are arranged in parallel on the clamping jaw driving unit (21), and the clamping jaw driving unit (21) is used to drive the two clamping jaws (20) to move closer or farther away.

10. A winding machine, characterized in that: include: A battery cell conveying mechanism (200), the battery cell conveying mechanism (200) being used for placing the battery cell (300) and conveying the battery cell (300) along a second direction; A battery cell punching mechanism (100), wherein the battery cell punching mechanism (100) is the battery cell punching mechanism (100) according to any one of claims 1 to 9, wherein the battery cell punching mechanism (100) is arranged on one side of the battery cell conveying mechanism (200) in the first direction, and the clamping assembly (2) is located above the battery cell conveying mechanism (200).

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