An electrode assembly for a lithium secondary battery

Abstract

The application discloses a kind of electric core wide winding machine, it is related to electric core winding technical field, including inner rotating tower, including driving element, switching gear ring, limit ring, and three groups of first needle element;Outer rotating tower, including clamping plate, avoiding groove, connecting rod, hinged column, and three groups of second needle element;Multiple needle, including first needle, and second needle.The beneficial effects of the application not only make the equipment flexible to adapt to the production of various specifications of electric core, meet the wide use standard, but also significantly enhance the overall mechanical properties of needle structure by the cross use of first needle and second needle.This cross needle layout effectively disperses the stress during winding process, prevents the bending or deformation that may occur due to single needle bearing excessive pressure, ensures the high standard specification of electric core production and the integrity of electric core structure.In the top block and inclined block, cleverly avoid the collision of needle tool, thereby preventing the damage of needle.

Description

Technical Field

[0001] The present invention relates to the technical field of battery core winding, in particular to a wide-width battery core winding machine. Background Art

[0002] In the current field of battery cell winding technology, the existing winding mechanism can only be applied to battery cells with smaller winding widths. However, increasing the length of the winding needle to accommodate battery cells with larger widths will face a series of technical challenges. The main problem is that as the length of the winding needle increases, its material strength may not be sufficient to support its own weight, causing the winding needle to bend during the winding process, which not only affects the winding quality of the battery cell, but may also cause the final product to not meet quality standards. In addition, the existing mechanism also has the risk of needle collision during the needle removal process, which may not only damage the winding needle, but also pose a threat to the stability and safety of the entire winding process. Therefore, there is an urgent need for a winding mechanism that can adapt to battery cells of different widths and has high stability to improve the efficiency and quality of battery cell production. Summary of the Invention

[0003] In view of the above problems or problems existing in the prior art, the present invention is proposed.

[0004] Therefore, an object of the present invention is to provide a wide-width battery cell winding machine, which can solve the problem that traditional winding mechanisms cannot adapt to the winding of wide-width battery cells.

[0005] To solve the above technical problems, the present invention provides the following technical solutions: a wide-width winding machine for battery cells, comprising an inner turret, a driving member, a switching gear ring provided on one side of the driving member, a limiting ring fixedly engaged with the outer side of the switching gear ring, and three sets of first winding needle members fixedly engaged with the circumference of the limiting ring;

[0006] The outer turret includes a clamping plate, a relief groove provided on the inner side of the clamping plate, a connecting rod provided on one side of the clamping plate, a hinged column provided on one side of the connecting rod, and three sets of second winding needle members arranged in an array around the inner side of the relief groove;

[0007] Multiple groups of winding needles, including a first winding needle arranged on one side of the inner turret and a second winding needle arranged on one side of the outer turret;

[0008] The first winding needle and the second winding needle are positioned opposite to each other and are cross-slidingly connected.

[0009] As a preferred solution of the wide-width winding machine for battery cells described in the present invention, it also includes a connecting unit, including a connecting piece arranged through the inner side of the limiting ring, three groups of first needle outlet assemblies fixedly arranged on the circumference of the connecting piece, three groups of second needle outlet assemblies fixedly arranged on the circumference of the other end of the connecting piece, and a limiting seat arranged on the first needle outlet assembly and the second needle outlet assembly at the same time.

[0010] As a preferred solution of the wide-width battery cell winding machine described in the present invention, the connecting part includes a first main shaft arranged at one end of the inner side of the limiting ring, a support shaft arranged on the outside of the first main shaft, an L-shaped limiting block arranged on the outside of the end of the support shaft, and a second main shaft arranged on the outside of the support shaft.

[0011] As a preferred embodiment of the wide-width winding machine for battery cells of the present invention, the first needle-out assembly includes a fixed seat provided on one side of the first main shaft, a rotating member provided on one side of the fixed seat, a screw provided on one side of the rotating member, and a connecting seat provided on the screw;

[0012] The connecting seat is fixedly connected to the limiting seat and can drive the first needle rolling member and the second needle rolling member.

[0013] As a preferred solution of the wide-width winding machine for battery cells described in the present invention, the first winding needle member includes a pull plate arranged on one side of the limit seat, a lever sleeve arranged on one side of the pull plate, a push plate arranged on the inner side of the lever sleeve, a slider arranged on the outer side of the lever sleeve, and a closing needle member arranged on one side of the slider.

[0014] As a preferred solution of the wide-width winding machine for battery cells of the present invention, the needle closing member includes a guide block, a needle end rod provided at the bottom of the guide block, and a deep groove ball bearing provided on the inner side of the needle end rod;

[0015] A slope is provided on one side of the guide block; when the slope cooperates with the deep groove ball bearing, the needle end rod can move vertically.

[0016] As a preferred solution of the wide-width winding machine for battery cells according to the present invention, the first winding needle includes a first inner clamping needle, a first long winding needle arranged at the bottom of the first inner clamping needle, and a first gap between the first inner clamping needle and the first long winding needle.

[0017] As a preferred solution of the wide-width winding machine for battery cells according to the present invention, the second winding needle includes a second inner clamping needle, a second long winding needle arranged at the bottom of the second inner clamping needle, and a second gap between the second inner clamping needle and the second long winding needle.

[0018] As a preferred solution of the wide-width winding machine for battery cells of the present invention, wherein: the first inner clamping needle can be inserted into the second gap;

[0019] And the second inner clamp needle can also be inserted into the first gap.

[0020] As a preferred solution of the wide width winding machine for battery cells of the present invention, wherein: the ends of the first long winding needle and the second long winding needle are both provided with an inclined block;

[0021] The shaft end of the sliding block is also provided with a top block that matches the inclined block.

[0022] Beneficial effects of the present invention: Through the precise overlapping design of the first winding needle and the second winding needle, precise control of the winding needle spacing is achieved during the production process. Not only does it enable the equipment to flexibly adapt to the production of battery cells of various specifications and meet wide-width usage standards, but the cross-use of the first winding needle and the second winding needle significantly enhances the overall mechanical properties of the winding needle structure. This cross-winding needle layout effectively disperses the stress during the winding process, prevents bending or deformation that may occur due to excessive pressure on a single winding needle, and ensures the high standards of battery cell production and the integrity of the battery cell structure. As well as in the top block and the bevel block, collisions of the needles are cleverly avoided, thereby preventing damage to the winding needles. This design not only improves the quality of battery cell winding, but also extends the service life of the equipment and reduces downtime during the production process. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following briefly introduces the drawings required for use in the description of the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0024] Figure 1 It is a schematic diagram of the overall structure of the wide-width winding machine for battery cells of the present invention.

[0025] Figure 2 It is a schematic diagram of the inner turret structure of the present invention.

[0026] Figure 3 It is a schematic diagram of the outer turret structure of the present invention.

[0027] Figure 4 for Figure 3 Schematic diagram of the structure of the first needle outlet assembly.

[0028] Figure 5 It is a schematic diagram of the connection relationship between the first needle coil and the second needle coil of the present invention.

[0029] Figure 6 This is a schematic diagram of the first needle winding structure of the present invention.

[0030] Figure 7 For the present invention Figure 6 Schematic diagram of the needle closing part structure at A in the middle.

[0031] Figure 8 For the present invention Figure 6 Schematic diagram of the structure of the first winding needle end at B in the middle.

[0032] Figure 9 This is a schematic diagram of the use of the first winding needle and the second winding needle of the present invention. DETAILED DESCRIPTION

[0033] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the specific embodiments of the present invention are described in detail below with reference to the accompanying drawings.

[0034] In the following description, many specific details are set forth to facilitate a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Those skilled in the art may make similar generalizations without violating the connotation of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0035] Secondly, the term "one embodiment" or "embodiment" herein refers to a specific feature, structure, or characteristic that may be included in at least one implementation of the present invention. The phrase "in one embodiment" appearing in various places throughout this specification does not necessarily refer to the same embodiment, nor does it constitute a separate or selective embodiment that is mutually exclusive with other embodiments.

[0036] Example 1, reference Figures 1 to 9 , which is the first embodiment of the present invention, provides a wide-width battery cell winding machine, which includes an inner turret 100, including a driving member 101, a switching gear ring 102 provided on one side of the driving member 101, a limiting ring 103 fixedly clamped to the outside of the switching gear ring 102, and three sets of first winding needle members 104 fixedly clamped to the circumference of the limiting ring 103;

[0037] The outer turret 200 includes a clamping plate 201, an escape groove 202 provided on the inner side of the clamping plate 201, a connecting rod 203 provided on one side of the clamping plate 201, a hinge column 204 provided on one side of the connecting rod 203, and three sets of second needle winding members 205 arranged around the inner side of the escape groove 202.

[0038] Multiple sets of winding needles 300, including a first winding needle 301 disposed on one side of the inner turret 100, and a second winding needle 302 disposed on one side of the outer turret 200;

[0039] The first winding needle 301 and the second winding needle 302 are positioned opposite to each other and can be cross-slidably connected.

[0040] Furthermore, it also includes a connecting unit 400, including a connecting piece 401 that passes through the inner side of the limiting ring 103, three groups of first needle outlet assemblies 402 fixedly arranged on the peripheral side of the connecting piece 401, three groups of second needle outlet assemblies 403 fixedly arranged on the peripheral side of the other end of the connecting piece 401, and a limiting seat Q that is simultaneously arranged on the first needle outlet assembly 402 and the second needle outlet assembly 403.

[0041] Furthermore, the connecting member 401 includes a first main shaft 401a arranged at one end of the inner side of the limiting ring 103, a support shaft 401b arranged outside the first main shaft 401a, an L-shaped limiting block 401c arranged outside the end of the support shaft 401b, and a second main shaft 401d arranged outside the support shaft 401b.

[0042] Furthermore, the first needle ejection assembly 402 includes a fixed base 402a disposed on one side of the first main shaft 401a, a rotating member 402b disposed on one side of the fixed base 402a, a screw rod 402c disposed on one side of the rotating member 402b, and a connecting base 402d disposed on the screw rod 402c;

[0043] The connecting seat 402d is fixedly connected to the limiting seat Q and can drive the first needle roll 104 and the second needle roll 205.

[0044] Furthermore, the first needle winding member 104 includes a pull plate 104a arranged on one side of the limit seat Q, a lever sleeve 104b arranged on one side of the pull plate 104a, a push plate 104c arranged on the inner side of the lever sleeve 104b, a slider 104d arranged on the outer side of the lever sleeve 104b, and a needle closing member 104e arranged on one side of the slider 104d.

[0045] Furthermore, the first winding needle 301 includes a first inner clamping needle 301a, a first long winding needle 301b arranged at the bottom of the first inner clamping needle 301a, and a first gap 301c between the first inner clamping needle 301a and the first long winding needle 301b.

[0046] Furthermore, the second winding needle 302 includes a second inner clamping needle 302a, a second long winding needle 302b disposed at the bottom of the second inner clamping needle 302a, and a second gap 302c between the second inner clamping needle 302a and the second long winding needle 302b.

[0047] Furthermore, the first inner clamping needle 301a can be inserted into the second gap 302c;

[0048] The second inner clamping needle 302a can also be inserted into the first gap 301c.

[0049] Furthermore, the ends of the first long winding needle 301b and the second long winding needle 302b are both provided with an inclined block N;

[0050] The axial end of the slider 104d is also provided with a top block M that cooperates with the inclined block N.

[0051] It should be noted that if Figure 1 and Figure 2 As shown, the turret comprises an inner turret 100 and an outer turret 200, with the inner turret 100 providing the driving force for the needle winding switching. The drive element 101 is conventional and can be a servo motor that drives a gear. A set of switching gear rings 102 engage on one side of the gear. The switching gears are also conventional and will not be described in detail here. Furthermore, a set of retaining rings 103 axially constrain the outer sides of the switching gear rings 102. The inner sides of the retaining rings 103 are provided with multiple equally spaced mounting holes. Each mounting hole holds a first needle winding element 104, which is axially constrained. Rotation of the switching gear ring 102 drives the multiple sets of first needle winding elements 104 to rotate and switch. A chuck at the front end of the first needle winding element 104 clamps the winding needle 300, which can drive the winding needle 300 to rotate.

[0052] Better, such as Figure 1 、 Figure 2 and Figure 3 As shown, the inner turret 100 and the outer turret 200 are connected together by a connecting unit 400. The connecting unit 400 includes a connecting member 401 that is arranged at the axis of the limiting ring 103, and the connecting member 401 is composed of a first main shaft 401a installed on one side of the inner turret 100, a support shaft 401b connected between the inner turret 100 and the outer turret 200, an L-shaped limiting block 401c installed at the rear end of the support shaft 401b, and a second main shaft 401d behind the support shaft 401b. The support shaft 401b is flange-connected to the first main shaft 401a and the second main shaft 401d. A plurality of first needle removal assemblies 402 are threadedly connected to the circumference of the first main shaft 401a, and a second needle removal assembly 403 is also threadedly connected to the circumference of the second main shaft 401d.

[0053] Preferably, Figure 4 As shown, the first needle removal assembly 402 comprises a fixed base 402a threadedly mounted on the periphery of the first main shaft 401a, a rotating member 402b fixedly mounted on the fixed base 402a, a screw 402c at the axis of the rotating member 402b, and a connecting base 402d at the rear end of the screw 402c. The rotating member 402b is conventionally designed and can be driven by a servo motor to rotate the screw 402c regularly, while the connecting base 402d can reciprocate on the screw 402c. One side of the connecting base 402d is fixedly connected to a limit seat Q, which is mounted on one side of both the first needle winding member 104 and the second needle winding member 205.

[0054] In addition, the first needle-exiting assembly 402 and the second needle-exiting assembly 403 have the same structure, and both can drive the limiting seat Q through the screw rod 402c, thereby indirectly driving the first needle winding member 104 and the second needle winding member 205 to reciprocate.

[0055] Better, such as Figure 3 As shown, an L-shaped stopper 401c is provided on the outer side of the end of the support shaft 401b, near the end of the outer turret 200. One side of the L-shaped stopper 401c is fixedly connected to the clamping plate 201 via a connecting rod, and the L-shaped stopper 401c is hinged to the support shaft 401b. A set of clamping plates 201 are clamped to the outer side of the L-shaped stopper 401c. The clamping plates 201 have a circular avoidance groove 202 formed inside. The avoidance groove 202 is to prevent interference with the movement of the second needle assembly 403 on the circumference of the second main shaft 401d.

[0056] Preferably, the number of the second needle outlet assemblies 403 is the same as the number of the first needle outlet assemblies 402. The number of the first needle outlet assemblies 402 is set according to the number of the first needle coiling members 104. In this embodiment, three groups of first needle coiling members 104 are arranged in a circumferential array.

[0057] Better, such as Figure 5 and Figure 6 As shown, the first winding needle member 104 can be used in conjunction with the second winding needle member 205, allowing the winding needle length to be adjusted to produce wider battery cells. The first and second winding needle members 104 and 205 have the same structure, and both are driven by the motor C on the side of the limit seat Q to perform the winding task. The cylinder D pushes the winding needle to close or open the needle.

[0058] Better, such as Figure 5 As shown, the needle winding unit 300 is composed of a first needle winding 301 that is engaged with the first needle winding member 104 and a second needle winding 302 that is engaged with the second needle winding member 205. The first needle winding 301 and the second needle winding 302 have the same structure. Figure 8 As shown, the first winding needle 104 comprises a first long winding needle 301b, which is recessed inwardly in an arc shape, and a first inner clamping needle 301a, which is spaced a distance from the first long winding needle 301. A first gap 301c is formed between the first inner clamping needle 301a and the first long winding needle 301b. The first inner clamping needle 301a has a stepped cross-section, with a larger inner end surface, which increases the contact area with the material and, in turn, the friction between the material and the material, preventing slippage during winding.

[0059] During use, when the winding needle is taken out and put away, the first needle out assembly 402 on the inner turret 100 side and the second needle out assembly 403 on the outer turret 200 side are fixedly connected to the first main shaft 401a and the second main shaft 401 respectively through the fixed seat 402a, and the first needle out assembly 402 and the second needle out assembly 403 are connected to the winding needle 300 respectively through the connecting seat 402d. After the rotating part 402b is started, under the action of the screw rod 402c, the connecting seat 402d drives the winding needle 300 to move along the support shaft 401b to achieve needle taking out and putting away.

[0060] During this process, the first winding needle 301 of the inner turret 100 and the second winding needle 302 of the outer turret 200 are positioned opposite each other, and the first winding needle 301 and the second winding needle 302 are simultaneously withdrawn or retracted;

[0061] When the needle is withdrawn, the first winding needle 301 and the second winding needle 302 move toward each other. The first winding needle 301 extends from the inner turret 100, and the first inner clamping needle 301a is inserted into the second gap 302c; in contrast, the second winding needle 302 extends from the outer turret 200, and the second inner clamping needle 302a is inserted into the first gap 301c.

[0062] During the needle retraction process, the first winding needle 301 and the second winding needle 302 move in opposite directions. The first inner clamping needle 301a is withdrawn from the second gap 302c, and the first winding needle 301 is retracted into the inner turret 100. Conversely, the second inner clamping needle 302a is withdrawn from the first gap 301c, and the second winding needle 302 is retracted into the outer turret 200.

[0063] Preferably, the first winding needle 301 and the second winding needle 302 precisely overlap during winding, allowing the distance between them to be flexibly adjusted based on wide-width usage standards, thereby adapting to the production requirements of different battery cell specifications. Furthermore, the interlaced use of the first and second winding needles 301, 302 further optimizes the mechanical properties of the winding needles, effectively enhancing their strength and stability during the winding process. This interlaced winding needle design distributes stress, preventing bending or deformation caused by excessive force on a single winding needle, thereby ensuring standardized battery cell production and the integrity of the cell structure, thereby improving the winding quality of the battery cells.

[0064] Furthermore, a bevel block N is installed at the end of each of the first and second long winding needles 301b, 302b, while a push block M is also installed on the first and second winding needles 104, 302. The push block M has a beveled surface on the side corresponding to the bevel block N. After the first and second long winding needles 301b, 302b, emerge and overlap simultaneously, the bevel block N acts as a pathfinder. When the bevel block N at the front end of the first long winding needle 301b contacts the push block M at the front end of the second winding needle 205, the push block M lifts the bevel block N away, preventing the needles from colliding and damaging the winding needles.

[0065] In summary, the battery cell winding device of the present invention realizes precise control of the winding needle spacing during the production process through the precise overlapping design of the first winding needle 301 and the second winding needle 302. Not only does it enable the equipment to flexibly adapt to the production of battery cells of various specifications and meet the wide-width usage standards, but also the overall mechanical properties of the winding needle structure are significantly enhanced through the cross-use of the first winding needle 301 and the second winding needle 302. This cross-winding needle layout effectively disperses the stress during the winding process, prevents bending or deformation that may occur due to excessive pressure on a single winding needle, and ensures the high standard of battery cell production and the integrity of the battery cell structure. As well as in the top block M and the bevel block N, the collision of the needles is cleverly avoided, thereby preventing damage to the winding needles. This design not only improves the quality of battery cell winding, but also extends the service life of the equipment and reduces downtime during the production process.

[0066] Example 2, reference Figures 1 to 9 , which is the second embodiment of the present invention, and is different from the first embodiment in that it also includes a first needle winding member 104 including a pull plate 104a arranged on one side of the limit seat Q, a lever sleeve 104b arranged on one side of the pull plate 104a, a push plate 104c arranged on the inner side of the lever sleeve 104b, a slider 104d arranged on the outer side of the lever sleeve 104b, and a needle closing member 104e arranged on one side of the slider 104d.

[0067] Furthermore, the needle closing member 104e includes a guide block 104e-1, a needle end rod 104e-2 disposed at the bottom of the guide block 104e-1, and a deep groove ball bearing 104e-3 disposed on the inner side of the needle end rod 104e-2;

[0068] A slope 104e-11 is provided on one side of the guide block 104e-1; when the slope 104e-11 cooperates with the deep groove ball bearing 104e-3, the needle end rod 104e-2 can move vertically.

[0069] It should be noted that if Figure 5 and Figure 6 As shown, the first needle winding member 104 and the second needle winding member 205 have the same structure and are both driven by the motor C on one side of the limit seat Q to perform the winding task. The cylinder D pushes the winding needle 300 to close or open the needle.

[0070] A lever sleeve 104b is fixedly connected to the push rod at the front end of cylinder D. The lever sleeve 104b is composed of a cylinder with larger diameters at both ends and a smaller diameter in the middle. Inside the smaller diameter cylinder, a push plate 104c is clamped. The push plate 104c is oval in shape, with both ends clamped to the inside of the lever sleeves 104b on both sides. When the cylinders D on both sides are activated, the lever sleeves 104b drive the inner push plates 104c backward. During this backward movement, the push plates 104c drive the needle closing member 104e to close or open the winding needle 300. The front end of the push plates 104c is fixedly connected to a set of guide blocks 104e-1, the bottom of which is the needle end rod 104e-2. There is a gap with a certain angle between the guide block 104e-1 and the needle end rod 104e-2. A groove is provided on the rod body of the needle end rod 104e-2, and a deep groove ball bearing 104e-3 is arranged in the groove. A slope 104e-11 with a certain angle is provided on the guide block 104e-1 above the deep groove ball bearing 104e-3.

[0071] Usage process: Cylinder D pushes the lever sleeve 104b to move horizontally backward, thereby driving the push plate 104c, thereby driving the guide block 104e-1 to move horizontally backward, and the guide block 104e-1 faces the inclined surface 104e-11 on one side of the needle end rod 104e-2 at the bottom of the winding needle 300, and the deep groove ball bearing 104e-3 on the inner side of the needle end rod 104e-2. With the cooperation of the inclined surface 104e-11 and the deep groove ball bearing 104e-3, the needle end rod 104e-2 moves vertically, and the needle end rod 104e-2 simultaneously drives the first long winding needle 301b / the second long winding needle 302b, and the first inner clamping needle 301a / the second inner clamping needle 302a to move radially.

[0072] When the winding needle 300 is closed, the first winding needle 301 and the second winding needle 302 are axially opposed, but the first inner clamping needle 301a / second inner clamping needle 302a and the first long winding needle 301b / second long winding needle 302b are radially opposite. Therefore, when the winding needle 300 moves backward under the drive of the cylinder D to close, the first inner clamping needle 301a and the second inner clamping needle 302a move radially toward each other, retracting inward until the material is clamped. The first inner clamping needle 301a and the second inner clamping needle 302a then move away from each other, expanding outward.

[0073] When the winding needle 300 is opened, the first inner clamping needle 301a and the second inner clamping needle 302a move radially away from each other, loosening the material. The first long winding needle 301 and the second long winding needle 302 move toward each other, that is, the first long winding needle 301b and the second long winding needle 301b retract inward. When the pressure between the first long winding needle 301b and the second long winding needle 301b and the material is lost, the friction also disappears, making it easier to remove the wound battery cell from the winding needle.

[0074] In summary, the device, through the provision of the needle closing member 104e, achieves rapid closing and opening of the winding needles on both sides, thereby efficiently clamping and releasing the material. This design significantly improves the winding needles' ability to grip the material, effectively avoiding the risk of needle collision during material loading, ensuring the stability and safety of the battery cell winding process, improving the quality and consistency of the battery cell winding, and reducing the production of defective products, thereby improving overall production efficiency and product quality.

[0075] It is important to note that the above embodiments are only used to illustrate the technical solutions of the present invention and are not intended to limit the present invention. Although the present invention has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solutions of the present invention may be modified or replaced by equivalents without departing from the spirit and scope of the technical solutions of the present invention, which should all be included in the scope of the claims of the present invention.

Claims

1. A wide width winding machine for battery cells, characterized by: include, An inner turret (100) comprises a driving member (101), a switching gear ring (102) arranged on one side of the driving member (101), a limiting ring (103) fixedly engaged with the outside of the switching gear ring (102), and three sets of first winding needle members (104) fixedly engaged with the circumference of the limiting ring (103); The outer turret (200) comprises a clamping plate (201), an avoidance groove (202) provided on the inner side of the clamping plate (201), a connecting rod (203) provided on one side of the clamping plate (201), a hinged column (204) provided on one side of the connecting rod (203), and three groups of second needle winding members (205) arranged in an array around the inner side of the avoidance groove (202); A plurality of winding needles (300), comprising a first winding needle (301) disposed on one side of the inner turret (100), and a second winding needle (302) disposed on one side of the outer turret (200); The first winding needle (301) and the second winding needle (302) are positioned opposite to each other and can be cross-slidably connected; The first winding needle (301) comprises a first inner clamping needle (301a), a first long winding needle (301b) arranged at the bottom of the first inner clamping needle (301a), and a first gap (301c) between the first inner clamping needle (301a) and the first long winding needle (301b); The second winding needle (302) includes a second inner clamping needle (302a), a second long winding needle (302b) arranged at the bottom of the second inner clamping needle (302a), and a second gap (302c) between the second inner clamping needle (302a) and the second long winding needle (302b); The first inner clamping needle (301a) can be inserted into the second gap (302c); Furthermore, the second inner clamping needle (302a) can also be inserted into the first gap (301c); The ends of the first long winding needle (301b) and the second long winding needle (302b) are both provided with an inclined block (N); The first needle winding member (104) comprises a slider (104d) arranged on the outside thereof; Furthermore, the axial end of the sliding block (104d) is also provided with a top block (M) that matches the inclined block (N).

2. The wide-width battery cell winding machine according to claim 1, characterized in that: It also includes a connecting unit (400), including a connecting piece (401) penetrating the inner side of the limiting ring (103), three groups of first needle-outlet assemblies (402) fixedly arranged on the peripheral side of the connecting piece (401), three groups of second needle-outlet assemblies (403) fixedly arranged on the peripheral side of the other end of the connecting piece (401), and a limiting seat (Q) simultaneously arranged on the first needle-outlet assembly (402) and the second needle-outlet assembly (403).

3. The wide-width battery core winding machine according to claim 2, characterized in that: The connecting member (401) comprises a first main shaft (401a) arranged at one end inside the limiting ring (103), a support shaft (401b) arranged outside the first main shaft (401a), an L-shaped limiting block (401c) arranged outside the end of the support shaft (401b), and a second main shaft (401d) arranged outside the support shaft (401b).

4. The wide-width battery cell winding machine according to claim 3, characterized in that: The first needle-extraction assembly (402) comprises a fixed seat (402a) arranged on one side of the first main shaft (401a), a rotating member (402b) arranged on one side of the fixed seat (402a), a screw rod (402c) arranged on one side of the rotating member (402b), and a connecting seat (402d) arranged on the screw rod (402c); The connecting seat (402d) is fixedly connected to the limiting seat (Q) and can drive the first needle winding member (104) and the second needle winding member (205).

5. The wide-width battery cell winding machine according to claim 4, characterized in that: The first needle winding member (104) comprises a pull plate (104a) arranged on one side of the limit seat (Q), a lever sleeve (104b) arranged on one side of the pull plate (104a), a push plate (104c) arranged on the inner side of the lever sleeve (104b), the slider (104d) arranged on the outer side of the lever sleeve (104b), and a needle closing member (104e) arranged on one side of the slider (104d).

6. The wide-width battery cell winding machine according to claim 5, characterized in that: The needle closing member (104e) comprises a guide block (104e-1), a needle end rod (104e-2) arranged at the bottom of the guide block (104e-1), and a deep groove ball bearing (104e-3) arranged on the inner side of the needle end rod (104e-2); A slope (104e-11) is provided on one side of the guide block (104e-1); when the slope (104e-11) cooperates with the deep groove ball bearing (104e-3), the needle end rod (104e-2) can move vertically.

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