CN221067173U - Extension device of lithium battery diaphragm - Google Patents

Abstract

The application relates to the technical field of battery production, in particular to an extension device of a lithium battery diaphragm, which comprises a bracket and a winding structure, wherein the bracket is arranged in front of the winding structure, the left side and the right side of the upper surface of the bracket are respectively provided with a rotary structure, an included angle exists between the left rotary structure and the right rotary structure, the distance between the two rotary structures close to one end of the winding structure is larger, the outer side of the rotary structure is connected with a plurality of clamping mechanisms, and a conversion piece for converting the clamping mechanisms is arranged at the position of the rotary structure on the bracket, so that the extension device has the advantage of realizing uniform extension of the diaphragm.

Description

Extension device of lithium battery diaphragm

Technical Field

The application relates to the technical field of battery production, in particular to an extension device of a lithium battery diaphragm.

Background

In the structure of the lithium battery, the diaphragm is one of the key inner layer components, the main function of the lithium battery diaphragm is to separate the positive electrode from the negative electrode of the battery and prevent the two electrodes from contacting to short circuit, and in addition, the lithium battery diaphragm has the function of passing electrolyte ions, and the diaphragm can be stretched and stretched during the production of the diaphragm.

Most of the existing diaphragm stretching technologies are unilateral stretching, the diaphragm is placed on a stretching bracket, two ends of the diaphragm are clamped by clamps, and then the diaphragm is stretched and stretched by moving one side of the clamps.

The existing method adopting unilateral stretching can lead to uneven stress on all parts of the diaphragm, so that the stretching degree of all parts of the diaphragm is different, and the lithium ion passing capacity of the diaphragm is reduced, thereby influencing the normal operation of the lithium battery.

Disclosure of utility model

The application provides an extension device for a lithium battery diaphragm, which aims to realize uniform extension of the diaphragm.

The technical aim of the application is realized by the following technical scheme:

The utility model provides an extension device of lithium cell diaphragm, includes support and winding structure, the support is placed in winding structure the place ahead, and support upper surface left and right sides is provided with a revolution mechanic respectively, and there is the contained angle between the revolution mechanic about, and two revolution mechanic is close to the distance of winding structure one end great, and the revolution mechanic outside is connected with a plurality of fixture, is provided with revolution mechanic department on the support and is provided with the conversion piece that makes fixture transition state.

Through adopting above-mentioned technical scheme, place diaphragm one end between fixture, fixture moves along with revolution mechanic case rolling structure direction, it changes clamping state to press from both sides tight state to reach the department fixture of converting state piece by opening state, thereby press from both sides tight diaphragm and move forward, owing to there is the contained angle between two revolution mechanic, distance between the fixture on support both sides increases gradually, thereby make the diaphragm extend, then fixture shifts out the converting state piece and changes into opening state, loosen the diaphragm, then fixture returns to initial position through the revolution mechanic, twine the diaphragm device that will stretch and finish on the coiling mechanism, thereby accomplish the even extension of diaphragm.

Optionally, the revolution mechanic includes action wheel, follow driving wheel, chain, and action wheel and follow driving wheel level setting have certain distance between action wheel and the follow driving wheel, and the chain meshes with action wheel and follow driving wheel, and fixture sets up in the chain outside.

By adopting the technical scheme, the driving wheel rotates to drive the chain to rotate, the chain drives the driven wheel to rotate, and the clamping mechanism moves along with the chain, so that the clamping mechanism rotates around the chain.

Optionally, fixture includes clamping structure and lower clamping structure, goes up clamping structure and includes flexible subassembly, upper connecting rod and punch holder, goes up flexible subassembly's one end and chain top fixed connection, goes up flexible subassembly's the other end and upper connecting plate fixed connection, and the upper connecting plate is kept away from flexible subassembly's one end and punch holder fixed connection, and lower clamping structure includes flexible subassembly, lower connecting rod and lower splint down, and flexible subassembly's one end and chain below fixed connection down, flexible subassembly's the other end and lower connecting plate fixed connection down, and flexible subassembly's one end and lower splint fixed connection down are kept away from to the lower connecting plate.

By adopting the technical scheme, when the clamping mechanism is in an open state, the upper telescopic assembly and the lower telescopic assembly are in an extending state, and a gap exists between the upper clamping plate and the lower clamping plate; when the clamping mechanism is in a clamping state, the upper telescopic assembly and the lower telescopic assembly are in a retracted state, and the upper clamping plate and the lower clamping plate are closed to finish clamping.

Optionally, go up flexible subassembly and include extension board, go up flexible interior pole, go up flexible outer tube and last spring, go up flexible outer tube lower extreme side fixed connection and go up the extension board, go up the one end and the chain top fixed connection of flexible outer tube of keeping away from to go up the extension board, go up flexible interior pole and penetrate flexible outer tube, go up flexible interior pole and last connecting rod fixed connection, go up the spring and cover and establish in flexible outer tube outside and the both ends of going up the spring and link to each other with last flexible outer tube and last flexible interior pole, flexible subassembly includes the lower extension board down, flexible interior pole down, flexible outer tube and lower spring down, flexible outer tube lower extreme side fixed connection down extension board down, flexible interior pole penetrates flexible outer tube down, flexible interior pole and lower connecting rod fixed connection down, the lower spring is established in flexible outer tube outside and the both ends of lower spring and flexible interior pole links to each other down with flexible outer tube down with the cover down.

Through adopting above-mentioned technical scheme, when fixture is in the clamping state, go up the spring and be in compression state with lower spring, go up the flexible subassembly and be in compression state with lower flexible subassembly, when fixture leaves the piece department of changing state, go up the spring and kick-back and make the flexible interior pole of going up upward movement to make punch holder upward movement, lower spring kick-back makes the flexible interior pole down movement, thereby makes the lower plate down movement, thereby makes fixture change to open state.

Optionally, an upper rubber pad is arranged on the lower surface of the upper clamping plate, and a lower rubber pad is arranged on the upper surface of the lower clamping plate.

Through adopting above-mentioned technical scheme, when pressing from both sides tight diaphragm, go up rubber pad and lower rubber pad and diaphragm contact, make the frictional force increase of centre gripping diaphragm department, prevent that the diaphragm from droing and leading to tensile failure, and set up rubber pad and lower rubber pad and can reduce the harm that relative movement produced to the diaphragm between fixture and the diaphragm.

Optionally, the conversion piece includes upper guide plate and lower deflector, and upper guide plate and lower deflector all set up in two adjacent one sides of revolution mechanic, when fixture arrived conversion piece department, upper guide plate contacted with the upper connecting rod, and lower guide plate contacted with the lower connecting rod.

Through adopting above-mentioned technical scheme, when fixture arrived the piece department that changes state, go up the connecting rod and slide on the deflector surface to make the connecting rod downwardly moving, thereby make the punch holder downwardly moving, lower connecting rod slides on the deflector surface down, thereby make the connecting rod upwards move, thereby make the lower plate upwards move, thereby make punch holder and lower plate press from both sides tightly, when fixture kept away from the piece that changes state, punch holder and lower plate separate.

Optionally, a motor is arranged below the driving wheel.

Through adopting above-mentioned technical scheme, drive the action wheel through the motor and rotate to make revolution mechanic rotate.

Optionally, the motor is provided with one, and the motor passes through two action wheels of gear connection.

Through adopting above-mentioned technical scheme, drive two action wheels through a motor control and rotate, make two action wheels synchronous motion, make the diaphragm tensile more even.

In summary, the application has the following technical effects:

1. the bidirectional simultaneous stretching is arranged to enable the membrane to be more uniform in expansion;

2. the clamping mechanism can be clamped and opened by arranging the telescopic component;

3. the two driving wheels and the two rotary structures are controlled to synchronously move by one motor.

Drawings

FIG. 1 is a top view of the present application;

FIG. 2 is a partial block diagram of the clamping mechanism of the present application;

FIG. 3 is a partial block diagram of the telescopic assembly of the present application;

FIG. 4 is a partial block diagram of the lower telescoping assembly of the present application;

FIG. 5 is a partial block diagram of the present application at a toggle;

FIG. 6 is a front view of the present application at the transition piece

Fig. 7 is a rear view of the present application.

In the figure, 1, a bracket; 2. a winding structure; 21. a reel; 22. a shaft bracket; 23. a winding motor; 3. a rotary structure; 31. a driving wheel; 32. driven wheel; 33. a chain; 4. a clamping mechanism; 41. an upper clamping structure; 411. an upper telescoping assembly; 4111. an upper telescoping outer tube; 4112. an upper telescopic inner rod; 4113. a spring is arranged; 4114. an upper extension plate; 412. an upper connecting rod; 413. an upper clamping plate; 4131. a rubber pad is arranged; 42. a lower clamping structure; 421. a lower telescoping assembly; 4211. a lower telescoping outer tube; 4212. a lower telescopic inner rod; 4213. a lower spring; 4214. a lower extension plate; 422. a lower connecting rod; 423. a lower clamping plate; 4231. a lower rubber pad; 5. a commutation member; 51. an upper guide plate; 52. a lower guide plate; 6. a rotary motor; 61. a gear lever; 611. a first bevel gear; 612. a fourth bevel gear; 62. a second bevel gear; 621. a second wheel bar; 63. a third bevel gear; 631. a third wheel lever; 7. a diaphragm.

Detailed Description

The present application will be described in further detail with reference to the accompanying drawings.

Referring to fig. 1, the application provides an extension device of a lithium battery diaphragm, which comprises a support 1, a winding structure 2 and a rotating structure 3, wherein the support 1 is placed on the ground, the winding structure 2 is placed right in front of the support 1, the two rotating structures 3 are respectively arranged on two opposite sides of the upper surface of the support 1, the two rotating structures 3 are placed in a horn shape, the distance between the two rotating structures 3 and one end of the winding structure 2 is large, and a plurality of clamping mechanisms 4 are uniformly arranged on the outer sides of the rotating structures 3. When the diaphragm 7 is stretched, the diaphragm 7 is placed on the clamping mechanism 4 on the side, close to the two rotating structures, of the rotating structures, the rotating structures 3 drive the clamping mechanism 4 to move towards the direction close to the winding structure 2, meanwhile, the clamping mechanism 4 is changed into a clamping shape from an open shape, the distance between the clamping mechanisms 4 at the left end and the right end of the diaphragm 7 is gradually increased, the diaphragm 7 is stretched, when the clamping mechanism 4 reaches one end, close to the winding structure 2, of the rotating structures 3, the clamping mechanism 4 is opened, and then the stretched diaphragm 7 is wound on the winding structure 2 to be wound.

The winding structure 2 comprises a winding shaft 21, a shaft bracket 22 and a winding motor 23, wherein the shaft bracket 22 is placed on the ground, the winding shaft 21 is horizontally arranged on the shaft bracket 22 and is rotationally connected with the shaft bracket 22, the axis of the winding shaft 21 is perpendicular to the winding direction of the diaphragm 7, the winding motor 23 is arranged at one end of the winding shaft 21 and is fixedly connected with the winding shaft 21, and the axis of the winding motor 23 is identical with the axis of the winding shaft 21.

The rotary structure 3 comprises a driving wheel 31, a driven wheel 32 and a chain 33, wherein the axes of the driving wheel 31 and the driven wheel 32 are vertical, the two driving wheels 31 are respectively arranged on the left side and the right side of one end of the support 1 far away from the scroll 21 in a rotating mode, the two driven wheels 32 are respectively arranged on the left side and the right side of one end of the support 1 near the scroll 21 in a rotating mode, the distance between the two driven wheels 32 is larger than that between the two driving wheels 31, one chain 33 is connected with the driven wheel 32 and the driving wheel 31 on the left side of the support 1, the other chain 33 is connected with the driving wheel 31 and the driven wheel 32 on the right side of the support 1, and the clamping mechanism 4 is arranged on the outer side of the chain 33.

Referring to fig. 1 and 2, the clamping mechanism 4 includes an upper clamping structure 41 and a lower clamping structure 42, the upper clamping structure 41 is fixedly connected with the upper portion of the chain 33, the lower clamping structure 42 is fixedly connected with the lower portion of the chain 33, the upper clamping structure 41 includes an upper telescopic component 411, an upper connecting rod 412 and an upper clamping plate 413, the lower end of the upper telescopic component 411 is connected with the upper end of the chain 33, the upper end of the upper telescopic component 411 is fixedly connected with one end of the upper connecting rod 412, the upper connecting rod 412 is horizontally arranged, the other end of the upper connecting rod 412 is connected with the upper surface of the upper clamping plate 413, one end of the upper connecting rod 412 connected with the upper clamping plate 413 points to a direction deviating from the chain 33, and the lower surface of the upper clamping plate 413 is provided with an upper rubber pad 4131.

The lower clamping structure 42 includes lower telescopic assembly 421, lower connecting rod 422 and lower plate 423, and the lower extreme of lower telescopic assembly 421 is connected with the upper end of chain 33, and the upper end of lower telescopic assembly 421 and the one end fixed connection of lower connecting rod 422, lower connecting rod 422 level setting, the lower surface of lower plate 423 is connected to the lower connecting rod 422 other end, and the one end that lower connecting rod 422 is connected with lower plate 423 points to the direction that deviates from chain 33, and the upper surface of lower plate 423 is provided with lower rubber pad 4231.

Referring to fig. 2 and 3, the upper telescopic assembly 411 includes an upper telescopic outer tube 4111, an upper telescopic inner rod 4112, an upper spring 4113 and an upper extension plate 4114, wherein the upper telescopic outer tube 4111 is vertically arranged, the upper extension plate 4114 is fixedly connected with the lower end of the upper telescopic outer tube 4111, one end of the upper extension plate 4114, which is far away from the upper telescopic outer tube 4111, is fixedly connected on the chain 33, the upper telescopic inner rod 4112 penetrates into the upper telescopic outer tube 4111, and the upper telescopic inner rod 4112 is fixedly connected with the upper connecting rod 412 at the upper end. The upper spring 4113 is sleeved outside the upper telescopic inner rod 4112 and fixedly connected with the upper end of the upper telescopic outer tube 4111, and the upper end of the upper spring 4113 is fixedly connected with the upper end of the upper telescopic inner rod 4112. The upper spring 4113 compresses and the upper retraction assembly 411 is in a retracted state, the upper spring 4113 rebounds and the upper retraction assembly 411 is in an extended state.

Referring to fig. 2 and 4, the lower telescopic assembly 421 includes a lower telescopic outer tube 4211, a lower telescopic inner rod 4212, a lower spring 4213 and a lower extension plate 4214, the lower telescopic outer tube 4211 is vertically arranged, the lower extension plate 4214 is fixedly connected with the upper end of the lower telescopic outer tube 4211, one end of the lower extension plate 4214, which is far away from the lower telescopic outer tube 4211, is fixedly connected under the chain 33, the lower telescopic inner rod 4212 penetrates into the lower telescopic outer tube 4211, and the lower telescopic inner rod 4212 is fixedly connected with the lower connecting rod 422 at the lower end. The lower spring 4213 is sleeved outside the lower telescopic inner rod 4212 and fixedly connected with the lower end of the lower telescopic outer tube 4211, and the lower end of the lower spring 4213 is fixedly connected with the lower end of the lower telescopic inner rod 4212. The lower spring 4213 compresses, the lower retraction assembly 421 is in a retracted state, the lower spring 4213 rebounds, and the lower retraction assembly 421 is in an extended state.

Referring to fig. 5 and 6, two converting members 5 are disposed on the upper surface of the bracket 1 and are disposed at the position where the rotating structure 3 is disposed on the bracket 1, the converting members 5 include an upper guide plate 51 and a lower guide plate 52, the lower guide plate 52 is disposed on a side close to the two chains 33, the lower guide plate 52 is disposed vertically, the upper side of the lower guide plate 52 is in a slope shape, when the clamping mechanism 4 passes over the lower guide plate 52, the lower connecting rod 422 slides over the lower guide plate 52, and when the lower connecting rod 422 is at the slope bottom of the lower guide plate 52, the lower telescopic assembly 421 is in an extended state; the lower connecting rod 422 slides on the lower guide plate 52 ramp, and the lower telescoping assembly 421 is in a compressed state. The upper guide plate 51 is fixedly arranged on the inner side part of the bracket 1, provided with the chain 33, the upper guide plate 51 bypasses the chain 33 above the chain 33 and reaches right above the lower guide plate 52, the lower end of the upper guide plate 51 right above the lower guide plate 52 is sloping, when the clamping mechanism 4 passes below the upper guide plate 51, the upper connecting rod 412 slides below the upper guide plate 51, and when the upper connecting rod 412 is at the slope bottom of the upper guide plate 51, the upper telescopic component 411 is in a stretching state; the lower telescoping assembly 421 is in a compressed state as the upper connecting rod 412 slides on the upper guide plate 51 ramp. The clamping mechanism 4 is changed from the open state to the clamped state when the clamping mechanism 4 passes the state change member 5, and the clamping mechanism 4 is changed from the clamped state to the open state when the clamping mechanism 4 is away from the state change member 5.

Referring to fig. 7, a rotary motor 6 is disposed below the support 1, an output shaft of the rotary motor 6 is parallel to an output shaft of the winding motor 23, a gear rod 61 is fixedly connected to the output shaft of the rotary motor 6, one end of the gear rod 61 is fixedly connected to the output shaft of the rotary motor 6, a first bevel gear 611 and a fourth bevel gear 612 are disposed near two ends of the gear rod 61, two driving wheels 31 are respectively provided with a second wheel rod 621 and a third wheel rod 631, the second wheel rod 621 and the third wheel rod 631 are fixedly connected to the driving wheels 31, the second wheel rod 621 penetrates the support 1 and is rotatably connected to the support 1, a second bevel gear 62 is fixedly disposed at the lower end of the second wheel rod 621, the second bevel gear 62 is meshed with the first bevel gear 611, the third wheel rod 631 penetrates the support 1 and is rotatably connected to the support 1, a third bevel gear 63 is fixedly disposed at the lower end of the third wheel rod 631, the third bevel gear 63 is meshed with the fourth bevel gear 612, and the rotary motor 6 is rotatably driven to rotate the two driving wheels 31.

The specific implementation principle of the application is as follows: when the diaphragm 7 is stretched, the left side of the diaphragm 7 is placed between an upper clamping plate 413 and a lower clamping plate 423 at one end of the left side rotating structure 3 far away from the scroll 21, the right side of the diaphragm 7 is placed between the upper clamping plate 413 and the lower clamping plate 423 at one end of the right side rotating structure 3 far away from the scroll 21, the rotating motor 6 rotates to drive the gears to rotate, when the clamping mechanism 4 clamping the diaphragm 7 reaches the distance reduction part between the upper guide plate 51 and the lower guide plate 52, the upper connecting rod 412 slides along the edge of the upper guide plate 51 to compress an upper spring 4113, the upper clamping plate 413 moves downwards, the lower connecting rod 422 slides along the edge of the lower guide plate 52 to compress a lower spring 4213, the lower clamping plate 423 moves downwards, the upper clamping plate 413 and the lower clamping plate 423 clamp the diaphragm 7 in the middle, so that the clamping mechanism 4 drives the diaphragm 7 to move towards the scroll 21, the distance between the clamping mechanism 4 at the left side and the right side of the diaphragm 7 gradually increases, the distance between the clamping mechanism 4 pulls the left side and the right side of the diaphragm 7 increases, the purpose of the diaphragm 7 extends, when the clamping mechanism 4 reaches the upper guide plate 51 and the lower guide plate 51 moves to the distance to the upper guide plate 51 and the lower side, the upper clamping plate 3 is stretched, the lower clamping plate 3 is stretched, the diaphragm 4 is stretched, the upper clamping plate 21 is stretched, and the diaphragm 21 is stretched, and the upper clamping plate 21 is stretched, and the diaphragm 4 is stretched, and the upper clamping plate 21 is stretched, and the upper is stretched. Compared with the existing extension device, the extension device enables the stress of the diaphragm 7 during extension to be more uniform.

Claims (8)

1. An extension device of lithium cell diaphragm, its characterized in that: including support (1) and winding structure (2), support (1) are placed in winding structure (2) the place ahead, and support (1) upper surface left and right sides is provided with a revolution mechanic (3) respectively, and there is the contained angle between revolution mechanic (3) about, and the distance that two revolution mechanic (3) are close to winding structure (2) one end is great, and revolution mechanic (3) outside is connected with a plurality of fixture (4), is provided with revolution mechanic (3) department on support (1) and is provided with conversion piece (5) that make fixture (4) transition state.

2. The extension device of a lithium battery separator according to claim 1, wherein: the rotary structure (3) comprises a driving wheel (31), a driven wheel (32) and a chain (33), wherein the driving wheel (31) and the driven wheel (32) are horizontally arranged, a certain distance exists between the driving wheel (31) and the driven wheel (32), the driving wheel (31) and the driven wheel (32) are connected through the chain (33), and the clamping mechanism (4) is arranged outside the chain (33).

3. The extension device of a lithium battery separator according to claim 2, wherein: clamping mechanism (4) are including last clamping structure (41) and lower clamping structure (42), go up clamping structure (41) including last telescopic subassembly (411), go up connecting rod (412) and punch holder (413), go up the one end and chain (33) top fixed connection of telescopic subassembly (411), go up the other end and last connecting rod (412) fixed connection of telescopic subassembly (411), go up the one end and punch holder (413) fixed connection of telescopic subassembly (411) are kept away from to connecting rod (412), lower clamping structure (42) include lower telescopic subassembly (421), lower connecting rod (422) and punch holder (423), the one end and chain (33) below fixed connection of lower telescopic subassembly (421), the other end and lower connecting rod (422) fixed connection of lower telescopic subassembly (421) are kept away from to lower connecting rod (422) one end and punch holder (423) fixed connection of lower telescopic subassembly (421).

4. A lithium battery separator extension device according to claim 3, wherein: the upper telescopic assembly (411) comprises an upper extension plate (4114), an upper telescopic inner rod (4112), an upper telescopic outer tube (4111) and an upper spring (4113), wherein the side surface of the lower end of the upper telescopic outer tube (4111) is fixedly connected with the upper extension plate (4114), one end of the upper telescopic outer tube (4111) is far away from the upper extension plate (4114) and is fixedly connected with the upper telescopic inner rod (4112), the upper telescopic inner rod (4112) penetrates into the upper telescopic outer tube (4111), the upper spring (4113) is fixedly connected with the upper connecting rod (412), the two ends of the upper spring (4113) are connected with the upper telescopic outer tube (4111) and the upper telescopic inner rod (4112), the lower telescopic outer tube (4211) and the lower spring (4213) respectively, the lower telescopic outer tube (4211) is fixedly connected with the lower end of the lower telescopic outer tube (4211), one end of the lower telescopic outer tube (4211) is far away from the lower telescopic outer tube (4211) and is fixedly connected with the lower end of the lower telescopic outer tube (33), and the lower telescopic inner rod (4212) penetrates into the lower telescopic inner rod (4212) and the lower telescopic inner rod (4212) respectively.

5. The extension device for a lithium battery separator according to claim 4, wherein: an upper rubber pad (4131) is arranged on the lower surface of the upper clamping plate (413), and a lower rubber pad (4231) is arranged on the upper surface of the lower clamping plate (423).

6. The extension device for a lithium battery separator according to claim 4, wherein: the transition piece (5) comprises an upper guide plate (51) and a lower guide plate (52), the upper guide plate (51) and the lower guide plate (52) are arranged on one sides of the two rotary structures (3) adjacent to each other, and when the clamping mechanism (4) reaches the transition piece (5), the upper guide plate (51) is in contact with the upper connecting rod (412), and the lower guide plate (52) is in contact with the lower connecting rod (422).

7. An extension device for a lithium battery separator according to any one of claims 2-6, wherein: a rotary motor (6) is arranged below the driving wheel (31).

8. The extension device for a lithium battery separator according to claim 7, wherein: the rotary motor (6) is provided with one, and the rotary motor (6) is connected with two driving wheels (31) through gears.