A battery cell electrode diaphragm winding device

Abstract

The present invention relates to the technical field of battery cell recycling, and discloses a battery cell electrode piece and diaphragm winding device, in which the electrode piece or diaphragm is sucked by a suction cup assembly, and a first driving member drives a rotating drum to rotate, so as to drive the electrode piece or diaphragm to cover multiple suction cup assemblies, multiple guide rollers and plug-in rollers outside the rotating drum. When the rotating drum drives the plug-in roller to move to the raised portion of the cam, the plug-in roller moves radially outward along the rotating drum and passes through the plug-in groove of the winding drum to insert the electrode piece or diaphragm into the interior of the winding drum, and then the rotating drum continues to rotate, and the plug-in roller is withdrawn from the plug-in groove under the action of an elastic member, and then the third driving member drives the clamping member to press and fix the electrode piece or diaphragm pushed into the winding drum against the inner wall of the winding drum, and then the winding drum is driven to rotate by the second driving member, so that the electrode piece or diaphragm can be wound in the winding drum, and the winding work can be completed without manual fixation of the electrode piece and the diaphragm end, and the practicality is high.

Description

Technical Field

[0001] The present invention relates to the field of battery cell recycling technology, and in particular to a battery cell electrode sheet diaphragm winding device. Background Art

[0002] With the continuous development of new energy vehicles, the market demand for lithium batteries is also increasing. However, the service life of lithium batteries is limited. Therefore, how to achieve the recycling of lithium batteries is also a problem that people need to solve.

[0003] At present, the patent document with the publication number CN219211040U discloses a separator and positive electrode sheet separation and collection device for lithium batteries. The specification discloses that the positive electrode sheet and separator / negative electrode sheet / separator at one end of the bare battery cell close to the winding assembly need to be manually separated, and the separator / negative electrode sheet / separator end is wound on the winding shaft. That is, the above patent document requires manual assistance to fix the free ends of the separator and the electrode sheet to the winding shaft before the winding of the electrode sheet and the separator can be completed. This winding method requires manual participation, which undoubtedly increases labor costs and has a low degree of automation. Summary of the invention

[0004] The purpose of this article is to provide a battery cell electrode diaphragm winding device to automatically fix the free ends of the electrode and diaphragm, so as to eliminate the need for manual intervention, save labor costs, and improve the efficiency of the winding work.

[0005] In order to solve the above technical problems, this article provides the following technical solutions:

[0006] A battery cell pole piece and diaphragm winding device, comprising a separation conveying mechanism for conveying pole pieces and diaphragms and a winding mechanism for winding pole pieces and diaphragms;

[0007] The separation and conveying mechanism comprises a rotating drum, a cam, a guide roller, a suction cup assembly, a splicing roller, an elastic member and a first driving member, wherein the cam is arranged in the rotating drum, the cam has a protrusion, a plurality of the guide rollers and the suction cup assemblies are provided, a plurality of the suction cup assemblies and a plurality of the guide rollers are uniformly distributed on the outer side of the rotating drum along the circumference of the rotating drum, and a suction cup assembly is provided between two adjacent guide rollers, one end of the splicing roller is telescopically arranged in the rotating drum along the radial direction of the rotating drum, and is continuously pressed against the outer side of the cam by the elastic member, the other end of the splicing roller extends outside the rotating drum, and the first driving member is used to drive the rotating drum and make the rotating drum rotate relative to the cam;

[0008] The winding mechanism includes a winding drum, a clamping member, a second driving member and a third driving member. The axis of the winding drum is parallel to the axis of the rotating drum. A plug-in groove is axially opened on the side wall of the winding drum. The plug-in groove is adjacent to the rotating drum. The plug-in groove is used for the plug-in roller to push the pole piece or diaphragm into the winding drum. The clamping member is arranged in the winding drum. The second driving member is used to drive the winding drum to rotate. The third driving member is used to drive the clamping member to press the end of the pole piece or diaphragm entering the winding drum against the inner wall of the winding drum.

[0009] In one embodiment, the clamping member includes a clamping block and a rotating rod both disposed inside the winding drum, one side of the clamping block is fixed to one end of the rotating rod, and the other side is close to the inner wall of the winding drum, the other end of the rotating rod is transmission-connected to the third driving member, and the third driving member drives the rotating rod to rotate.

[0010] In one embodiment, a side of the pressing block away from the rotating rod is a first arc surface.

[0011] In one embodiment, the radius of the first arc surface of the pressing block gradually increases from the front end to the rear end in the rotation direction, and the rear end of the first arc surface is close to the inner wall of the winding drum.

[0012] In one embodiment, the inner wall of the winding drum is a second arc surface, and the radius of the area of ​​the second arc surface close to the plug-in slot is larger than the radius of the remaining area of ​​the second arc surface.

[0013] In one embodiment, the plug-in roller includes a plug-in rod, a plug-in block and an abutment block. The abutment block is fixed to one end of the plug-in rod located in the rotating cylinder. The elastic member is a compression spring. The compression spring is sleeved outside the plug-in rod and is located between the abutment block and the inner wall of the rotating cylinder to push the abutment block to continuously press against the outside of the cam. The plug-in rod is fixed to one end located outside the rotating cylinder with a plug-in block adapted to enter the plug-in groove.

[0014] In one embodiment, the splicing roller further comprises a guide cylinder, the guide cylinder is fixed outside the rotating cylinder, and the splicing rod is inserted into the guide cylinder.

[0015] In one embodiment, a side of the plug-in block away from the plug-in rod is a third arc surface.

[0016] In one embodiment, the guide roller includes a connecting bracket, a connecting roller and a telescopic driving member, the telescopic driving member is fixed to the outside of the rotating drum, the connecting bracket is fixed to the output end of the telescopic driving member, the connecting roller is connected to the connecting bracket, and the axis of the connecting roller is parallel to the axis of the rotating drum, and the telescopic driving member is used to drive the connecting roller to move radially along the rotating drum.

[0017] In one embodiment, the suction cup assembly includes a connecting rod, a suction cup body, and a negative pressure device, one end of the connecting rod is fixed to the outside of the rotating drum, the other end of the connecting rod is fixed to the suction cup body, a negative pressure hole is opened on the side of the suction cup body away from the connecting rod, and the negative pressure device is connected to the suction cup body and communicated with the negative pressure hole on the suction cup body.

[0018] Compared with the prior art, the battery cell electrode sheet diaphragm winding device of the embodiment of this invention has the following beneficial effects:

[0019] In this article, before the electrode piece or diaphragm of the battery cell is wound up, the electrode piece or diaphragm is first moved to the separation conveying mechanism, and then the suction cup assembly can suck the electrode piece or diaphragm, and the first driving member drives the rotating drum to rotate, thereby driving the electrode piece or diaphragm to cover multiple suction cup assemblies, multiple guide rollers and plug-in rollers outside the rotating drum. When the rotating drum drives the plug-in roller to move to the raised portion of the cam, the plug-in roller is guided by the raised portion to move outward along the radial direction of the rotating drum and pass through the plug-in groove of the winding drum to insert the electrode piece or diaphragm covering the outside of the rotating drum into the interior of the winding drum, and then the rotating drum continues to rotate, and the plug-in roller is moved from the plug-in groove under the action of the elastic member. The connecting groove exits, and then the third driving member drives the clamping member to press and fix the electrode piece or diaphragm entering the winding drum against the inner wall of the winding drum, and then the second driving member drives the winding drum to rotate, so that the electrode piece or diaphragm can be wound in the winding drum. Therefore, this article can automatically fix the end of the electrode piece or diaphragm on the winding drum after the electrode piece or diaphragm is transported to the separation transmission mechanism, thereby ensuring that the electrode piece or diaphragm can be smoothly wound on it when the winding drum rotates, without manual work to fix the electrode piece and diaphragm ends, reducing manual participation, so it can not only improve the lithium battery recycling efficiency, but also reduce labor costs, and has high practicality. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic diagram of the overall structure of the embodiment of this article;

[0021] Figure 2 yes Figure 1 Enlarged view of point A in the middle;

[0022] Figure 3 is a stereogram of an embodiment of this invention;

[0023] Figure 4It is a schematic diagram of the end of the pole piece or the diaphragm being fixed to the winding drum in the embodiments of this article.

[0024] In the figure, 1, separation and transmission mechanism; 11, rotating drum; 12, cam; 121, raised part; 13, guide roller; 131, connecting bracket; 132, connecting roller; 133, telescopic driving member; 14, suction cup assembly; 141, connecting rod; 142, suction cup body; 143, negative pressure hole; 15, plug-in roller; 151, plug-in rod; 152, plug-in block; 1521, third arc surface; 153, abutment block; 154, guide cylinder; 16, elastic member; 2, winding mechanism; 21, winding drum; 211, plug-in groove; 212, second arc surface; 22, pressing member; 221, pressing block; 222, rotating rod; 223, first arc surface. DETAILED DESCRIPTION

[0025] The specific implementation methods of this article are further described in detail below in conjunction with the drawings and examples. The following examples are used to illustrate this article, but are not used to limit the scope of this article.

[0026] like Figures 1 to 4 As shown, this article relates to a battery cell electrode sheet and diaphragm winding device, including a separation conveying mechanism 1 for conveying the electrode sheet and the diaphragm and a winding mechanism 2 for winding the electrode sheet and the diaphragm;

[0027] The separation and conveying mechanism 1 includes a rotating drum 11, a cam 12, a guide roller 13, a suction cup assembly 14, a splicing roller 15, an elastic member 16 and a first driving member, wherein the cam 12 is arranged in the rotating drum 11, and the cam 12 has a protrusion 121, and a plurality of the guide rollers 13 and the suction cup assemblies 14 are provided, and the plurality of suction cup assemblies 14 and the plurality of guide rollers 13 are uniformly distributed on the outside of the rotating drum 11 along the circumference of the rotating drum 11, and the suction cup assembly 14 is provided between two adjacent guide rollers 13, one end of the splicing roller 15 is telescopically arranged in the rotating drum 11 along the radial direction of the rotating drum 11, and is continuously pressed against the outside of the cam 12 by the elastic member 16, and the other end of the splicing roller 15 extends outside the rotating drum 11, and the first driving member is used to drive the rotating drum 11 and make the rotating drum 11 rotate relative to the cam 12;

[0028] The winding mechanism 2 includes a winding drum 21, a clamping member 22, a second driving member and a third driving member. The axis of the winding drum 21 is parallel to the axis of the rotating drum 11. A plug-in groove 211 is axially opened on the side wall of the winding drum 21. The plug-in groove 211 is adjacent to the rotating drum 11. The plug-in groove 211 is used for the plug-in roller 15 to push the pole piece or diaphragm into the winding drum 21. The clamping member 22 is arranged in the winding drum 21. The second driving member is used to drive the winding drum 21 to rotate. The third driving member is used to drive the clamping member 22 to press the end of the pole piece or diaphragm entering the winding drum 21 against the inner wall of the winding drum 21.

[0029] In this article, before winding up the electrode sheet or diaphragm of the battery cell, the electrode sheet or diaphragm is first moved to the separation conveying mechanism 1, and then the suction cup assembly 14 can suck the electrode sheet or diaphragm, and the first driving member drives the rotating drum 11 to rotate, thereby driving the electrode sheet or diaphragm to cover the multiple suction cup assemblies 14, multiple guide rollers 13 and plug-in rollers 15 outside the rotating drum 11. When the rotating drum 11 drives the plug-in rollers 15 to move to the raised portion 121 of the cam 12, under the guidance of the raised portion 121, the plug-in rollers 15 move outward along the radial direction of the rotating drum 11 and pass through the plug-in groove 211 of the winding drum 21 to insert the electrode sheet or diaphragm covering the outside of the rotating drum 11 into the interior of the winding drum 21, and then the rotating drum 11 continues to rotate, and the elastic member 1 6, the plug-in roller 15 withdraws from the plug-in groove 211, and then the third driving member drives the clamping member 22 to fix the electrode piece or diaphragm entering the winding drum 21 against the inner wall of the winding drum 21, and then the second driving member drives the winding drum 21 to rotate, so that the electrode piece or diaphragm can be wound in the winding drum 21. Therefore, after the electrode piece or diaphragm is transported to the separation and conveying mechanism 1, the end of the electrode piece or diaphragm can be automatically fixed on the winding drum 21, thereby ensuring that the electrode piece or diaphragm can be smoothly wound on it when the winding drum 21 rotates, without manual work to fix the end of the electrode piece or diaphragm, reducing manual participation, so it can not only improve the lithium battery recycling efficiency, but also reduce labor costs, and has high practicality.

[0030] In this embodiment, the clamping member 22 includes a clamping block 221 and a rotating rod 222, both of which are arranged in the winding drum 21. One side of the clamping block 221 is fixed to one end of the rotating rod 222, and the other side of the clamping block 221 is close to the inner wall of the winding drum 21. The other end of the rotating rod 222 is transmission-connected to the third driving member, and the third driving member drives the rotating rod 222 to rotate.

[0031] The rotating rod 222 is driven to rotate in the winding drum 21 by the third driving member to drive the clamping block 221 to rotate in the circumferential direction. After the pole piece or the diaphragm is pushed into the winding drum 21, the clamping block 221 can drive the pole piece or the diaphragm to stick to the inner wall of the winding drum 21 when rotating, and press the pole piece or the diaphragm against the inner wall of the winding drum 21 after the clamping block 221 stops rotating, so as to fix the end of the pole piece or the diaphragm and ensure that the pole piece or the diaphragm will not separate from the winding drum 21 when the winding drum 21 rotates to wind up the pole piece or the diaphragm.

[0032] In one embodiment, the side of the clamping block 221 away from the rotating rod 222 is a first arc surface 223, so that the first arc surface 223 of the clamping block 221 is close to the inner wall of the winding drum 21, so as to more stably press the pole piece or diaphragm to the inner wall of the winding drum 21.

[0033] In one embodiment, the radius of the first arc surface 223 of the pressing block 221 gradually increases from the front end to the rear end in the rotation direction, and the rear end of the first arc surface 223 is close to the inner wall of the winding drum 21 .

[0034] Therefore, when the clamping block 221 rotates, the pole piece or diaphragm can better enter from the front end of the first arc surface 223 into the space between the first arc surface 223 and the inner wall of the winding drum 21 without causing damage to the pole piece or diaphragm. Then, when the pole piece or diaphragm moves to the rear end of the first arc surface 223, the rear end area of ​​the first arc surface 223 presses the pole piece or diaphragm against the inner wall of the winding drum 21 to fix the pole piece or diaphragm.

[0035] In other embodiments, the inner wall of the winding drum 21 is a second arc surface 212, and the radius of the area of ​​the second arc surface 212 close to the plug-in slot 211 is greater than the radius of the remaining area of ​​the second arc surface 212. That is, when the clamping block 221 rotates in the circumferential direction, the closer the clamping block 221 is to the plug-in slot 211, the closer the clamping block 221 is to the inner wall of the winding drum 21, so that the pole piece or diaphragm passing through the plug-in slot 211 can be pushed and pressed against the inner wall of the winding drum 21.

[0036] In this embodiment, the plug-in roller 15 includes a plug-in rod 151, a plug-in block 152 and a contact block 153. The contact block 153 is fixed to one end of the plug-in rod 151 located inside the rotating drum 11. The elastic member 16 is a compression spring, which is sleeved outside the plug-in rod 151 and located between the contact block 153 and the inner wall of the rotating drum 11 to push the contact block 153 to continuously press against the outside of the cam 12. The plug-in rod 151 is fixed to one end located outside the rotating drum 11 with a plug-in block 152 that is adapted to enter the plug-in groove 211. When the abutment block 153 abuts against the non-raised portion of the outer wall of the rotating drum 11, there is a certain distance between the abutment block 153 and the insertion groove 211; when the abutment block 153 abuts against the top of the raised portion 121, the abutment block 153 passes through the insertion groove 211 and is inserted into the interior of the winding drum 21, and the pole piece or diaphragm is inserted into the winding drum 21, and then the rotating rod 222 rotates, driving the clamping block 221 to rotate, and the pole piece or diaphragm inserted into the winding drum 21 is pressed against the inner wall of the winding drum 21, thereby fixing the end of the pole piece or diaphragm.

[0037] When the rotating drum 11 rotates, the rotating drum 11 drives the connecting rod 151 to rotate, and under the action of the compression spring, the abutment block 153 at one end of the connecting rod 151 can move along the outer periphery of the cam 12. After the abutment block 153 moves to the raised portion 121 of the cam 12, the connecting rod 151 moves radially outward along the rotating drum 11 to drive the connecting block 152 to be inserted into the connecting groove 211 of the winding drum 21. Then the rotating drum 11 continues to rotate. After the abutment block 153 leaves the raised portion 121, under the action of the compression spring, the connecting rod 151 drives the connecting block 152 to extend out of the connecting groove 211, so that the pole piece or diaphragm can be inserted into the winding drum 21.

[0038] In one embodiment, the splicing roller 15 further includes a guide cylinder 154, which is fixed to the outside of the rotating cylinder 11, and the splicing rod 151 is inserted into the guide cylinder 154, thereby guiding the splicing rod 151 to make the movement of the splicing rod 151 more stable.

[0039] In one embodiment, the side of the plug-in block 152 away from the plug-in rod 151 is a third arc surface 1521, so as to smoothly insert the electrode piece or the diaphragm into the winding drum 21 without causing damage to the electrode piece or the diaphragm.

[0040] In this embodiment, the guide roller 13 includes a connecting bracket 131, a connecting roller 132 and a telescopic driving member 133. The telescopic driving member 133 is fixed to the outside of the rotating drum 11. The connecting bracket 131 is fixed to the output end of the telescopic driving member 133. The connecting roller 132 is connected to the connecting bracket 131, and the axis of the connecting roller 132 is parallel to the axis of the rotating drum 11. The telescopic driving member 133 is used to drive the connecting roller 132 to move radially along the rotating drum 11. The telescopic driving member 133 can specifically be a telescopic cylinder.

[0041] By setting the telescopic cylinder, the connecting bracket 131 and the connecting roller 132 can be driven to move away from the rotating drum 11, so that the pole piece or diaphragm is separated from the suction cup assembly 14, so that the winding drum 21 can better wind up the pole piece or diaphragm.

[0042] In this embodiment, the suction cup assembly 14 includes a connecting rod 141, a suction cup body 142, and a negative pressure device, one end of the connecting rod 141 is fixed to the outside of the rotating drum 11, and the other end of the connecting rod 141 is fixed to the suction cup body 142, and a negative pressure hole 143 is opened on the side of the suction cup body 142 away from the connecting rod 141, and the negative pressure device is connected to the suction cup body 142 and communicated with the negative pressure hole 143 on the suction cup body 142.

[0043] When the negative pressure device is working, the negative pressure hole 143 of the suction cup body 142 can generate negative pressure suction, so that the electrode or diaphragm can be sucked, and as the rotating drum 11 rotates, it gradually covers the multiple suction cup assemblies 14 and the multiple guide rollers 13 and the plug-in rollers 15, so as to realize the automatic fixation of the electrode or diaphragm. It should be noted that when the winding drum 21 rotates to wind up the electrode or diaphragm, the negative pressure device stops working to release the suction on the electrode or diaphragm, so as to facilitate the winding work of the winding drum 21.

[0044] In this embodiment, two winding assemblies can be provided, the two winding assemblies are symmetrically arranged, and the two winding assemblies are adjacent to the rotating drum 11, the rotating drum 11 is correspondingly provided with two plug-in rollers 15, and the outer side of the cam 12 is correspondingly provided with two protrusions 121, so that the battery cell electrode sheet and diaphragm winding device of this article can simultaneously wind up and recycle the electrode sheets or diaphragms of two battery cells, greatly improving the recycling efficiency of lithium batteries.

[0045] In summary, compared with the prior art, the battery cell electrode and diaphragm winding device of this article drives the movement of the electrode and diaphragm through a separate transmission component, and inserts the electrode or diaphragm into the winding drum of the winding assembly, and then cooperates with a clamping piece to fix the end of the electrode or diaphragm, so that the electrode or diaphragm can be smoothly wound on it when the winding drum rotates, thereby facilitating the realization of automated recycling of lithium batteries.

[0046] The above is only an optional implementation of this article. It should be pointed out that for ordinary technicians in this technical field, several improvements and substitutions can be made without departing from the technical principles of this article. These improvements and substitutions should also be regarded as the scope of protection of this article.

Claims

1. A battery cell electrode diaphragm winding device, characterized in that: It comprises a separation conveying mechanism (1) for conveying the pole piece and the diaphragm and a winding mechanism (2) for winding the pole piece and the diaphragm; The separation and conveying mechanism (1) comprises a rotating drum (11), a cam (12), a guide roller (13), a suction cup assembly (14), a plug-in roller (15), an elastic member (16) and a first driving member, wherein the cam (12) is arranged in the rotating drum (11), the cam (12) has a protrusion (121), a plurality of the guide roller (13) and the suction cup assembly (14) are provided, and the plurality of the suction cup assemblies (14) and the plurality of the guide rollers (13) are uniformly distributed on the rotating drum along the circumference of the rotating drum (11). (11) outside, and the suction cup assembly (14) is provided between two adjacent guide rollers (13), one end of the plug-in roller (15) is telescopically arranged in the rotating drum (11) along the radial direction of the rotating drum (11), and is continuously pressed against the outside of the cam (12) through the elastic member (16), and the other end of the plug-in roller (15) extends outside the rotating drum (11), and the first driving member is used to drive the rotating drum (11) and make the rotating drum (11) rotate relative to the cam (12); The winding mechanism (2) comprises a winding drum (21), a clamping member (22), a second driving member and a third driving member. The axis of the winding drum (21) is parallel to the axis of the rotating drum (11). An insertion groove (211) is axially provided on the side wall of the winding drum (21). The insertion groove (211) is adjacent to the rotating drum (11). The insertion groove (211) is used for the insertion roller (15) to push the pole piece or the diaphragm into the winding drum (21). The clamping member (22) is arranged in the winding drum (21). The second driving member is used to drive the winding drum (21) to rotate. The third driving member is used to drive the clamping member (22) to press the end of the pole piece or the diaphragm entering the winding drum (21) against the inner wall of the winding drum (21).

2. The battery cell electrode sheet diaphragm winding device according to claim 1, characterized in that: The clamping member (22) comprises a clamping block (221) and a rotating rod (222) both of which are arranged inside the winding drum (21); one side of the clamping block (221) is fixed to one end of the rotating rod (222), and the other side of the clamping block (221) is close to the inner wall of the winding drum (21); the other end of the rotating rod (222) is transmission-connected to the third driving member, and the third driving member drives the rotating rod (222) to rotate.

3. The battery cell electrode sheet diaphragm winding device according to claim 2, characterized in that: The side of the pressing block (221) away from the rotating rod (222) is a first curved surface (223).

4. The battery cell electrode sheet diaphragm winding device according to claim 3, characterized in that: The radius of the first arc surface (223) of the pressing block (221) gradually increases from the front end to the rear end in the rotation direction, and the rear end of the first arc surface (223) is close to the inner wall of the winding drum (21).

5. The battery cell electrode sheet diaphragm winding device according to claim 2, characterized in that: The inner wall of the winding drum (21) is a second curved surface (212), and the radius of the area of ​​the second curved surface (212) close to the plug-in slot (211) is greater than the radius of the remaining area of ​​the second curved surface (212).

6. The battery cell electrode sheet diaphragm winding device according to claim 1, characterized in that: The plug-in roller (15) comprises a plug-in rod (151), a plug-in block (152) and a contact block (153); the contact block (153) is fixed to one end of the plug-in rod (151) located inside the rotating drum (11); the elastic member (16) is a compression spring, which is sleeved outside the plug-in rod (151) and located between the contact block (153) and the inner wall of the rotating drum (11) so as to push the contact block (153) to continuously press against the outside of the cam (12); the plug-in block (152) adapted to enter the plug-in slot (211) is fixed to one end of the plug-in rod (151) located outside the rotating drum (11).

7. The battery cell electrode sheet diaphragm winding device according to claim 6, characterized in that: The splicing roller (15) further comprises a guide cylinder (154), wherein the guide cylinder (154) is fixed outside the rotating cylinder (11), and the splicing rod (151) is inserted into the guide cylinder (154).

8. The battery cell electrode sheet diaphragm winding device according to claim 6, characterized in that: The side of the plug-in block (152) away from the plug-in rod (151) is a third curved surface (1521).

9. The battery cell electrode sheet diaphragm winding device according to claim 1, characterized in that: The guide roller (13) comprises a connecting bracket (131), a connecting roller (132) and a telescopic driving member (133); the telescopic driving member (133) is fixed to the outside of the rotating drum (11); the connecting bracket (131) is fixed to the output end of the telescopic driving member (133); the connecting roller (132) is connected to the connecting bracket (131); the axis of the connecting roller (132) is parallel to the axis of the rotating drum (11); and the telescopic driving member (133) is used to drive the connecting roller (132) to move radially along the rotating drum (11).

10. The battery cell electrode sheet diaphragm winding device according to claim 1, characterized in that: The suction cup assembly (14) includes a connecting rod (141), a suction cup body (142), and a negative pressure device, one end of the connecting rod (141) is fixed to the outside of the rotating drum (11), and the other end of the connecting rod (141) is fixed to the suction cup body (142), and a negative pressure hole (143) is provided on the side of the suction cup body (142) away from the connecting rod (141), and the negative pressure device is connected to the suction cup body (142) and communicated with the negative pressure hole (143) on the suction cup body (142).

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