CN116914276A - Lithium battery inserting device and method - Google Patents

Abstract

The invention discloses a lithium battery inserting sheet device and a method, and belongs to the technical field of lithium battery inserting sheets. Including the support frame, still include: the motor is fixedly connected to the surface of the supporting frame, the output end of the motor is fixedly connected with a second rotating rod, and the free end of the second rotating rod is fixedly connected with a second positioning column; the electric push rod is fixedly connected to the surface of the support frame, the output end of the electric push rod is rotationally connected with a first positioning column, the free ends of the first positioning column and the second positioning column are respectively provided with a first clamping groove, and a winding needle is clamped in the first clamping grooves; the central rod is fixedly connected to the free end of the first positioning column, the free end of the second positioning column is provided with a second clamping groove, the second clamping groove is matched with the central rod, a third clamping groove is formed between the central rod and the winding needle, and a pole piece is clamped in the third clamping groove; the compaction mechanism arranged on the support frame can continuously press the rolled pole piece, so that the compactness of pole piece winding is improved, and the service life of the lithium battery is prolonged.

Description

Lithium battery inserting device and method

Technical Field

The invention relates to the technical field of lithium battery inserting sheets, in particular to a lithium battery inserting sheet device and a lithium battery inserting sheet method.

Background

A wound battery is a battery composed of cells assembled and formed in a winding manner, and is called a wound battery. The coiled battery is also called a battery core, and a lithium battery produced by adopting the coiling process has excellent starting current and shock resistance, excellent high-low temperature performance and long cycle service life; when the lithium battery is wound, the pole piece is wound into a roll core shape wrapped layer by layer through the rotation of the winding needle, in the process, the combination process of the pole piece and the winding needle is called an inserting sheet, as an important ring in the production of the lithium battery, the operation process of the inserting sheet influences the bonding tightness between the pole piece and the winding needle at the later stage and the whole circumference of the lithium battery,

in the prior art, when the lithium battery inserting sheet device is wound by a winding machine, the compactness of winding is difficult to ensure, and if the winding is loose, the service life of the lithium battery is easy to influence, so that improvement is needed.

Disclosure of Invention

The invention aims to solve the problem that the service life of a lithium battery is easily influenced if the winding is loose when the winding compactness of the lithium battery inserting sheet device in the prior art is difficult to ensure when the winding is carried out by a winding machine.

In order to achieve the above purpose, the present invention adopts the following technical scheme:

the utility model provides a lithium cell inserted sheet device, includes the support frame, still includes: the motor is fixedly connected to the surface of the supporting frame, the output end of the motor is fixedly connected with a second rotating rod, and the free end of the second rotating rod is fixedly connected with a second locating column; the electric push rod is fixedly connected to the surface of the support frame, the output end of the electric push rod is rotationally connected with a first positioning column, the free ends of the first positioning column and the second positioning column are respectively provided with a first clamping groove, and a winding needle is clamped in the first clamping grooves; the central rod is fixedly connected to the free end of the first positioning column, the free end of the second positioning column is provided with a second clamping groove, the second clamping groove is matched with the central rod, a third clamping groove is formed between the central rod and the winding needle, and a pole piece is clamped in the third clamping groove; the compaction mechanism is arranged on the supporting frame and is used for fastening the pole piece wound on the winding needle.

In order to facilitate fastening of the pole piece wound on the winding needle, preferably, the tightening mechanism comprises: the rotary drum is rotatably connected to the inner wall of the support frame, a plurality of grooves are formed in the outer wall of the rotary drum, and a support frame is rotatably connected to the grooves; the support frames are rotatably connected with a plurality of support columns, the outer walls of the support columns are fixedly connected with first connecting plates, the first connecting plates are slidably connected in corresponding support frames, the surfaces of the first connecting plates are rotatably connected with fourth rotating rods, and the outer walls of the fourth rotating rods are fixedly connected with compression rods; the adjusting mechanism is arranged on the supporting frame and used for adjusting the position of the pressing rod.

In order to facilitate the compaction mechanism to achieve the compaction effect, further, the grooves, the supporting frames, the first connecting plates and the compaction rods are in one-to-one correspondence, the compaction rods are circumferentially arrayed by taking the axis of the rotary drum as the center, the number of the compaction rods is three, and the rotary drum and the center rod are coaxial.

For the position of conveniently adjusting the clamp bar, further, adjustment mechanism includes fixed connection be in the ring gear of rotary drum outer wall, the surface rotation of support frame is connected with first bull stick, the outer wall fixedly connected with first gear and the second gear of first bull stick, second gear and ring gear intermesh, wherein, the outer wall fixedly connected with third gear of second bull stick, third gear and first gear intermesh.

In order to facilitate the gear ring to rotate slowly, further, the transmission ratio of the first gear to the third gear is 1:15.

For conveniently conveying pole pieces, preferably, the inner wall of the support frame is rotationally connected with a plurality of third rotating rods, the output end of the motor is fixedly connected with one of the third rotating rods, the outer wall of the third rotating rod is fixedly connected with a rotating roller, a conveyor belt is connected between the adjacent rotating rollers in a transmission manner, the pole pieces are positioned on the surface of the conveyor belt, a chain is connected between the adjacent third rotating rods in a transmission manner, and a power mechanism is arranged between the chain and the second rotating rod and is used for driving the second rotating rod to rotate.

In order to conveniently drive the second rotating rod to rotate, further, the power mechanism comprises a second connecting plate fixedly connected to the surface of the chain, a second sliding groove is formed in the surface of the supporting frame, a moving plate is connected to the second sliding groove in a sliding mode, a first sliding groove is formed in the surface of the moving plate, a first sliding block is connected to the first sliding groove in a sliding mode, the first sliding block is connected with the second connecting plate in a rotating mode, a first rack is fixedly connected to the surface of the moving plate, a fourth gear is fixedly connected to the outer wall of the second rotating rod, and the fourth gear is meshed with the first rack.

In order to facilitate cutting and fixing of the pole piece, further, the surface of the movable plate is slidably connected with a sliding bar, the bottom of the sliding bar is fixedly connected with a pressing plate, the pressing plate is propped against the pole piece, a spring is fixedly connected between the sliding bar and the movable plate, the surface of the sliding bar is fixedly connected with a sliding bar, the surface of the supporting frame is symmetrically and fixedly connected with a track plate, the sliding bar is slidably connected with the track plate, and one side, far away from the first positioning column, of the pressing plate is fixedly connected with a cutting knife.

In order to conveniently realize the cutting function and the fixing function of the pole piece, the track plate further comprises a first horizontal part and a second horizontal part, an inclined part is fixedly connected between the first horizontal part and the second horizontal part, and protruding parts are symmetrically and fixedly connected on the surface of the first horizontal part.

A lithium battery inserting method comprises the following operation steps:

step one: cutting a pole piece into a specified length, clamping one end of the pole piece on a winding needle, and fixing the other end of the pole piece;

step two: the pole piece is conveyed towards the winding needle direction, and simultaneously, the winding needle is rotated to wind the pole piece on the winding needle;

step three: and pressurizing and tightening the outer wall of the coiled lithium battery inserting sheet.

Compared with the prior art, the invention provides a lithium battery inserting sheet device, which has the following beneficial effects:

1. this lithium battery inserting piece device, through the first draw-in groove with the one end joint of rolling up the needle on first reference column, start electric putter makes the center pole move towards second reference column direction, until the center pole joint is in the second draw-in groove, at this moment, the other end joint of rolling up the needle is in the first draw-in groove on the second reference column, with the one end joint of pole piece at the third draw-in groove, start motor drive second bull stick rotates, on the one hand, the second bull stick drives the second reference column, the center pole, roll up needle and first reference column and rotate, thereby be convenient for roll up the pole piece on the needle, realize the inserted sheet technology, on the other hand, the second bull stick drives the third gear and rotates, the third gear drives the first gear and rotates, the first gear drives the first rotation of pole, the first gear drives the second gear and rotates, the ring gear drives the ring gear and rotates, thereby make three pole piece that is close to the volume, thereby constantly carry out the pole piece, and the compactness of coiling pole piece has been improved, lithium battery life of exerting pressure has been improved.

2. This lithium cell inserted sheet device rotates through the third bull stick of starter motor drive, on the one hand, under the transmission effect of chain, the third bull stick drives each roller and rotates, the roller drives the conveyer belt and removes, thereby be convenient for to third draw-in groove direction conveying pole piece, on the other hand, the chain drives the second link plate and removes, because first slider slides in first spout, the second link plate drives the movable plate and slides in the second spout, the movable plate drives first rack and removes, first rack drives the fourth gear and rotates, the fourth gear drives the second bull stick and rotates, thereby make center pole and reel needle rotate.

3. This lithium cell inserted sheet device drives the slide bar through the movable plate and removes, because slide bar sliding connection is on the surface of track board, consequently, under the effect of spring, can make the pressing plate remove on vertical direction, when slide bar sliding connection is on the second horizontal part, cut the sword and press the board and be in the lowest position, at this moment, can cut unnecessary pole piece, when slide bar sliding connection is on first horizontal part, press the board and offset with the pole piece, when slide bar sliding connection is on the bellying, press the board and rise earlier then descend, keep away from the bellying of center pole and be favorable to placing the pole piece between conveyer belt and pressing the board, the bellying that is close to the center pole is favorable to pole piece and conveyer belt to break away from, the rolling is on the winding needle entirely.

Drawings

Fig. 1 is a schematic structural diagram of a lithium battery tab device according to the present invention;

fig. 2 is a schematic structural diagram of a compacting mechanism in a lithium battery tab device according to the present invention;

fig. 3 is a schematic diagram of a portion of a lithium battery tab device according to the present invention;

fig. 4 is a schematic diagram of a portion of a lithium battery inserting device according to the second embodiment of the present invention;

fig. 5 is an enlarged schematic view of a structure a in fig. 4 of a lithium battery tab device according to the present invention;

fig. 6 is an enlarged schematic view of the structure at B in fig. 4 of a lithium battery tab device according to the present invention.

In the figure: 1. a support frame; 101. an electric push rod; 102. a first positioning column; 103. a first clamping groove; 104. a second positioning column; 105. a central rod; 106. a second clamping groove; 107. a winding needle; 108. a pole piece; 109. a third clamping groove; 2. a first gear; 201. a rotating drum; 202. a groove; 203. a support frame; 204. a first connector plate; 205. a pressing rod; 206. a support column; 207. a second gear; 208. a first rotating lever; 209. a toothed ring; 3. a motor; 301. a second rotating rod; 302. a third gear; 303. a second connector plate; 304. a third rotating rod; 305. a conveyor belt; 306. a chain; 307. a fourth rotating lever; 4. a moving plate; 401. a first chute; 402. a first slider; 403. a first rack; 404. a second chute; 405. a fourth gear; 406. a rotating roller; 5. pressing the plate; 501. a slide bar; 502. a spring; 503. a track pad; 504. a slide bar; 505. a cutting knife; 506. a first horizontal portion; 507. a second horizontal portion; 508. a boss; 509. an inclined portion.

Detailed Description

The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments.

In the description of the present invention, it should be understood that the terms "upper," "lower," "front," "rear," "left," "right," "top," "bottom," "inner," "outer," and the like indicate or are based on the orientation or positional relationship shown in the drawings, merely to facilitate description of the present invention and to simplify the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present invention.

Example 1:

referring to fig. 1-2, a lithium battery tab device includes a support frame 1, and further includes: the motor 3 is fixedly connected to the surface of the support frame 1, the output end of the motor 3 is fixedly connected with a second rotating rod 301, and the free end of the second rotating rod 301 is fixedly connected with a second positioning column 104; the electric push rod 101 is fixedly connected to the surface of the support frame 1, the output end of the electric push rod 101 is rotationally connected with the first positioning column 102, the free ends of the first positioning column 102 and the second positioning column 104 are respectively provided with a first clamping groove 103, and a winding needle 107 is clamped in the first clamping grooves 103; the central rod 105 is fixedly connected to the free end of the first positioning column 102, the free end of the second positioning column 104 is provided with a second clamping groove 106, the second clamping groove 106 is matched with the central rod 105, a third clamping groove 109 is formed between the central rod 105 and the winding needle 107, and a pole piece 108 is clamped in the third clamping groove 109; the tightening mechanism is arranged on the support frame 1 and is used for tightening the pole piece 108 wound on the winding needle 107.

Referring to fig. 2, the compaction mechanism includes: a rotary drum 201 rotatably connected to the inner wall of the support frame 1, a plurality of grooves 202 are formed in the outer wall of the rotary drum 201, and a support frame 203 is rotatably connected to the grooves 202; a plurality of support columns 206 rotatably connected to the inner wall of the support frame 1, wherein the outer walls of the support columns 206 are fixedly connected with first connecting plates 204, the first connecting plates 204 are slidably connected in corresponding support frames 203, the surfaces of the first connecting plates 204 are rotatably connected with fourth rotating rods 307, and the outer walls of the fourth rotating rods 307 are fixedly connected with compression rods 205; the adjusting mechanism is arranged on the support frame 1 and is used for adjusting the position of the pressing rod 205.

The grooves 202, the support frame 203, the first joint plates 204 and the pressing rods 205 are in one-to-one correspondence, the pressing rods 205 are circumferentially arrayed with the axis of the drum 201 as the center, the number of the pressing rods 205 is three, and the drum 201 is coaxial with the center rod 105.

Referring to fig. 1-2, the adjusting mechanism comprises a toothed ring 209 fixedly connected to the outer wall of a rotary drum 201, a first rotary rod 208 is rotatably connected to the surface of the supporting frame 1, a first gear 2 and a second gear 207 are fixedly connected to the outer wall of the first rotary rod 208, the second gear 207 is meshed with the toothed ring 209, a third gear 302 is fixedly connected to the outer wall of the second rotary rod 301, and the third gear 302 is meshed with the first gear 2.

To facilitate slow rotation of the toothed ring 209, the ratio of the first gear 2 to the third gear 302 is 1:15.

One end of the winding needle 107 is clamped in the first clamping groove 103 on the first positioning column 102, the electric push rod 101 is started to enable the center rod 105 to move towards the second positioning column 104 until the center rod 105 is clamped in the second clamping groove 106, at the moment, the other end of the winding needle 107 is clamped in the first clamping groove 103 on the second positioning column 104, one end of the pole piece 108 is clamped in the third clamping groove 109, the starting motor 3 drives the second rotating rod 301 to rotate, on one hand, the second rotating rod 301 drives the second positioning column 104, the center rod 105, the winding needle 107 and the first positioning column 102 to rotate, so that the pole piece 108 is wound on the winding needle 107, the inserting sheet process is realized, on the other hand, the second rotating rod 301 drives the third gear 302 to rotate, the third gear 302 drives the first gear 2 to rotate, the first gear 2 drives the first rotating rod 208 to rotate, the first rotating rod 208 drives the second gear 207 to rotate, the second gear 207 drives the toothed ring 209 to rotate, the toothed ring 209 drives the rotating drum 201 to rotate, and therefore the three pressing rods 205 are enabled to press the pole pieces 108 to be wound tightly against the pole pieces 108, and the service life of the lithium battery is further improved.

Example 2:

referring to fig. 1 and 3-6, substantially the same as example 1, further embodiments are added to facilitate transport of pole piece 108.

Referring to fig. 1 and fig. 3-6, the inner wall of the supporting frame 1 is rotatably connected with a plurality of third rotating rods 304, the output end of the motor 3 is fixedly connected with one of the third rotating rods 304, the outer wall of the third rotating rod 304 is fixedly connected with rotating rollers 406, a conveyor belt 305 is connected between adjacent rotating rollers 406 in a transmission manner, the pole piece 108 is positioned on the surface of the conveyor belt 305, a chain 306 is connected between adjacent third rotating rods 304 in a transmission manner, a power mechanism is arranged between the chain 306 and the second rotating rod 301, and the power mechanism is used for driving the second rotating rod 301 to rotate.

Referring to fig. 3 to 6, the power mechanism includes a second connecting plate 303 fixedly connected to the surface of the chain 306, a second sliding groove 404 is formed on the surface of the supporting frame 1, a moving plate 4 is slidably connected to the second sliding groove 404, a first sliding groove 401 is formed on the surface of the moving plate 4, a first sliding block 402 is slidably connected to the first sliding groove 401, the first sliding block 402 is rotatably connected to the second connecting plate 303, a first rack 403 is fixedly connected to the surface of the moving plate 4, a fourth gear 405 is fixedly connected to the outer wall of the second rotating rod 301, and the fourth gear 405 is meshed with the first rack 403.

In this embodiment, the starting motor 3 drives the third rotating rod 304 to rotate, on one hand, under the transmission action of the chain 306, the third rotating rod 304 drives each rotating roller 406 to rotate, and the rotating rollers 406 drive the conveying belt 305 to move, so that the pole piece 108 is conveniently conveyed towards the third clamping groove 109, on the other hand, the chain 306 drives the second connecting plate 303 to move, and since the first sliding block 402 slides in the first sliding groove 401, the second connecting plate 303 drives the moving plate 4 to slide in the second sliding groove 404, the moving plate 4 drives the first rack 403 to move, the first rack 403 drives the fourth gear 405 to rotate, and the fourth gear 405 drives the second rotating rod 301 to rotate, so that the center rod 105 and the winding needle 107 rotate.

Example 3:

referring to fig. 1 and 3-6, substantially the same as example 2, further embodiments are added to facilitate cutting and fixing of pole piece 108.

Referring to fig. 1 and fig. 3-6, a sliding bar 501 is slidably connected to the surface of the moving plate 4, a pressing plate 5 is fixedly connected to the bottom of the sliding bar 501, the pressing plate 5 is propped against the pole piece 108, a spring 502 is fixedly connected between the sliding bar 501 and the moving plate 4, a sliding rod 504 is fixedly connected to the surface of the sliding bar 501, a track plate 503 is symmetrically and fixedly connected to the surface of the supporting frame 1, a cutting knife 505 is fixedly connected to one side, far from the first positioning column 102, of the pressing plate 5, and the sliding bar 504 is slidably connected to the track plate 503.

It should be noted that, the track pad 503 includes a first horizontal portion 506 and a second horizontal portion 507, an inclined portion 509 is fixedly connected between the first horizontal portion 506 and the second horizontal portion 507, and a protruding portion 508 is symmetrically and fixedly connected to a surface of the first horizontal portion 506.

The moving plate 4 drives the sliding rod 504 to move, because the sliding rod 504 is slidably connected to the surface of the track plate 503, the pressing plate 5 can move in the vertical direction under the action of the spring 502, when the sliding rod 504 is slidably connected to the second horizontal portion 507, the cutting knife 505 and the pressing plate 5 are at the lowest position, at this time, redundant pole pieces 108 can be cut, when the sliding rod 504 is slidably connected to the first horizontal portion 506, the pressing plate 5 abuts against the pole pieces 108, when the sliding rod 504 is slidably connected to the protruding portion 508, the pressing plate 5 is lifted and then lowered, the protruding portion 508 far away from the center rod 105 is beneficial to placing the pole pieces 108 between the conveyor belt 305 and the pressing plate 5, and the protruding portion 508 close to the center rod 105 is beneficial to separating the pole pieces 108 from the conveyor belt 305 and is completely wound on the winding needle 107.

A lithium battery inserting method comprises the following operation steps:

step one: cutting the pole piece 108 into a specified length, then clamping one end of the pole piece 108 in a third clamping groove 109, and fixing the other end of the pole piece 108 by using the pressing plate 5;

step two: the third rotating rod 304 is driven by the starting motor 3 to rotate, under the transmission action of the chain 306, each rotating roller 406 is driven by the third rotating rod 304 to rotate, the conveyor belt 305 is driven by the rotating rollers 406 to move, so that the pole piece 108 is conveyed towards the winding needle 107, meanwhile, the second connecting plate 303 is driven by the chain 306 to move, the fourth gear 405 is driven by the second connecting plate 303 to rotate, the second rotating rod 301 is driven by the fourth gear 405 to rotate, and therefore the center rod 105 and the winding needle 107 rotate, and the pole piece 108 is wound on the winding needle 107;

step three: the starting motor 3 drives the second gear 207 to rotate, the second gear 207 drives the toothed ring 209 to rotate, and the toothed ring 209 drives the rotary drum 201 to rotate, so that the three pressing rods 205 are close to the coiled pole piece 108, and the outer wall of the coiled lithium battery inserting piece is continuously pressurized and tightened.

The foregoing is only a preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art who is skilled in the art to which the present invention pertains should make equivalent substitutions or modifications according to the technical scheme and the inventive concept disclosed herein, and should be covered by the scope of the present invention.

Claims (10)

1. The utility model provides a lithium cell inserted sheet device, includes support frame (1), its characterized in that still includes:

the motor (3) is fixedly connected to the surface of the supporting frame (1), the output end of the motor (3) is fixedly connected with a second rotating rod (301), and the free end of the second rotating rod (301) is fixedly connected with a second positioning column (104);

the electric push rod (101) is fixedly connected to the surface of the support frame (1), a first positioning column (102) is rotatably connected to the output end of the electric push rod (101), first clamping grooves (103) are formed in the free ends of the first positioning column (102) and the second positioning column (104), and winding needles (107) are clamped in the first clamping grooves (103);

the central rod (105) is fixedly connected to the free end of the first positioning column (102), a second clamping groove (106) is formed in the free end of the second positioning column (104), the second clamping groove (106) is matched with the central rod (105), a third clamping groove (109) is formed between the central rod (105) and the winding needle (107), and a pole piece (108) is clamped in the third clamping groove (109);

the tightening mechanism is arranged on the supporting frame (1) and used for tightening the pole piece (108) wound on the winding needle (107).

2. The lithium battery tab device of claim 1, wherein the compaction mechanism comprises:

a rotary drum (201) rotatably connected to the inner wall of the supporting frame (1), a plurality of grooves (202) are formed in the outer wall of the rotary drum (201), and a supporting frame (203) is rotatably connected to the grooves (202);

a plurality of support columns (206) which are rotatably connected to the inner wall of the support frame (1), wherein a first connecting plate (204) is fixedly connected to the outer wall of the support column (206), the first connecting plate (204) is slidably connected to the corresponding support frame (203), a fourth rotating rod (307) is rotatably connected to the surface of the first connecting plate (204), and a pressing rod (205) is fixedly connected to the outer wall of the fourth rotating rod (307);

the adjusting mechanism is arranged on the supporting frame (1) and is used for adjusting the position of the pressing rod (205).

3. The lithium battery inserting sheet device according to claim 2, wherein the grooves (202), the supporting frame (203), the first connecting plate (204) and the pressing rods (205) are in one-to-one correspondence, the pressing rods (205) are circumferentially arrayed with the axis of the rotary drum (201) as the center, the number of the pressing rods (205) is three, and the rotary drum (201) is coaxial with the center rod (105).

4. The lithium battery inserting sheet device according to claim 2, wherein the adjusting mechanism comprises a toothed ring (209) fixedly connected to the outer wall of the rotary drum (201), a first rotating rod (208) is rotatably connected to the surface of the supporting frame (1), a first gear (2) and a second gear (207) are fixedly connected to the outer wall of the first rotating rod (208), the second gear (207) is meshed with the toothed ring (209),

the outer wall of the second rotating rod (301) is fixedly connected with a third gear (302), and the third gear (302) is meshed with the first gear (2).

5. The lithium battery tab arrangement according to claim 4, characterized in that the transmission ratio of the first gear (2) to the third gear (302) is 1:15.

6. The lithium battery inserting sheet device according to claim 1, wherein the inner wall of the supporting frame (1) is rotatably connected with a plurality of third rotating rods (304), the output end of the motor (3) is fixedly connected with one of the third rotating rods (304), the outer wall of the third rotating rod (304) is fixedly connected with a rotating roller (406), a conveyor belt (305) is connected between adjacent rotating rollers (406) in a transmission manner, the pole piece (108) is positioned on the surface of the conveyor belt (305), a chain (306) is connected between adjacent third rotating rods (304) in a transmission manner,

a power mechanism is arranged between the chain (306) and the second rotating rod (301), and the power mechanism is used for driving the second rotating rod (301) to rotate.

7. The lithium battery inserting sheet device according to claim 6, wherein the power mechanism comprises a second connecting plate (303) fixedly connected to the surface of the chain (306), a second sliding groove (404) is formed in the surface of the supporting frame (1), a moving plate (4) is slidably connected to the second sliding groove (404), a first sliding groove (401) is formed in the surface of the moving plate (4), a first sliding block (402) is slidably connected to the first sliding groove (401), the first sliding block (402) is rotatably connected with the second connecting plate (303),

the surface of the moving plate (4) is fixedly connected with a first rack (403), the outer wall of the second rotating rod (301) is fixedly connected with a fourth gear (405), and the fourth gear (405) is meshed with the first rack (403).

8. The lithium battery inserting sheet device according to claim 7, wherein the surface of the moving plate (4) is slidably connected with a sliding bar (501), the bottom of the sliding bar (501) is fixedly connected with a pressing plate (5), the pressing plate (5) is propped against the pole piece (108), a spring (502) is fixedly connected between the sliding bar (501) and the moving plate (4), a sliding bar (504) is fixedly connected with the surface of the sliding bar (501), a track plate (503) is symmetrically and fixedly connected with the surface of the supporting frame (1), the sliding bar (504) is slidably connected with the track plate (503), and a cutting knife (505) is fixedly connected with one side, far away from the first positioning column (102), of the pressing plate (5).

9. The lithium battery inserting sheet device according to claim 8, wherein the track board (503) comprises a first horizontal portion (506) and a second horizontal portion (507), an inclined portion (509) is fixedly connected between the first horizontal portion (506) and the second horizontal portion (507), and protruding portions (508) are symmetrically and fixedly connected to the surface of the first horizontal portion (506).

10. A lithium battery inserting method, adopting the lithium battery inserting device as claimed in any one of claims 1-9, characterized by comprising the following operation steps:

step one: cutting the pole piece (108) into a specified length, then clamping one end of the pole piece (108) on a winding needle (107), and fixing the other end of the pole piece (108);

step two: the pole piece (108) is conveyed towards the winding needle (107), and simultaneously, the winding needle (107) is rotated to wind the pole piece (108) on the winding needle (107);

step three: and pressurizing and tightening the outer wall of the coiled lithium battery inserting sheet.