Hot-pressing structure of lithium battery equipment

Abstract

The utility model relates to the technical field of lithium battery equipment hot pressing, in particular to a lithium battery equipment hot pressing structure. Comprising a lower pressing plate for placing a workpiece; the clamping mechanism is arranged on the lower pressing plate, and the clamping mechanism comprises a first side plate and a second side plate which can move close to or away from each other; the hot pressing mechanism comprises an upper pressing plate located above the lower pressing plate, and the upper pressing plate can controllably move in the direction towards the lower pressing plate; the pushing mechanism is arranged on the lower pressing plate and comprises a pushing body capable of moving in the length direction of the second side plate. The battery cell is fixed through the clamping mechanism, the distance can be flexibly adjusted according to the size of the battery cell through the first side plate and the second side plate which can move close to each other or away from each other, the battery cell subjected to hot working can be pushed out through the pushing mechanism, manual taking is not needed, labor is saved, safety is achieved, and collection is convenient.

Description

Technical Field

[0001] The utility model relates to the technical field of hot pressing of lithium battery equipment, and particularly relates to a hot pressing structure of lithium battery equipment. Background Art

[0002] In the production process of lithium-ion batteries, after the production of the electrode sheets is completed, the positive and negative electrode sheets and the separator are assembled and manufactured by winding or laminating methods to form a basic battery cell. Subsequently, generally, the battery cell is subjected to hot pressing and shaping. The thickness consistency of the battery cell in a loose state is poor, which will affect the battery cell casing process, increase the difficulty of the casing process, and even cause damage to the battery cell during casing. The lithium battery hot press is a key device used in the battery manufacturing process. It can tightly bond the positive and negative electrode sheets of the lithium battery with the separator layer through hot pressing.

[0003] The existing hot pressing structure of lithium battery equipment has problems such as the battery cell shifting and falling during the hot pressing process, resulting in low hot pressing efficiency, and the battery cell still having residual heat after processing, which is inconvenient for manual handling. Summary of the Utility Model

[0004] The purpose of the utility model is to provide a hot pressing structure of lithium battery equipment to solve the above technical problems;

[0005] The technical problems solved by the utility model can be realized by the following technical solutions:

[0006] A hot pressing structure of lithium battery equipment includes

[0007] A lower pressing plate for placing the workpiece;

[0008] A clamping mechanism is arranged on the lower pressing plate. The clamping mechanism includes a first side plate and a second side plate that can move closer to or away from each other;

[0009] A hot pressing mechanism. The hot pressing mechanism includes an upper pressing plate located above the lower pressing plate, and the upper pressing plate can be controlled to move in the direction towards the lower pressing plate;

[0010] A pushing mechanism is arranged on the lower pressing plate. The pushing mechanism includes a pushing body that can move along the length direction of the second side plate.

[0011] Preferably, it further includes a buffer mechanism, which is telescopically arranged on the side of the first side plate close to the second side plate. A buffer surface for contacting the workpiece is arranged on the side of the buffer mechanism facing the second side plate.

[0012] Preferably, it further includes a conveying mechanism, which is arranged on one side of the lower pressing plate along the movement direction of the pushing body. A conveyor belt for conveying the workpiece is arranged on the conveying mechanism.

[0013] Preferably, the workpiece to be processed is a battery cell that will deform under hot processing.

[0014] Preferably, the clamping mechanism includes

[0015] The first side plate and the second side plate which are symmetrically arranged, and both ends of the first side plate and both ends of the second side plate are arranged in sliding grooves opened on the lower pressing plate along the moving direction of the first side plate and the second side plate;

[0016] A bidirectional screw rod is arranged in the sliding groove corresponding to the first end of the first side plate, and both ends of the bidirectional screw rod are respectively threadedly connected to the first side plate and the second side plate;

[0017] A limiting rod is arranged in the sliding groove corresponding to the second end of the first side plate, and the second end of the first side plate and the second end of the second side plate are slidably connected to the limiting rod;

[0018] A first motor, the output end of the first motor penetrates through the side wall of the lower pressing plate and is connected to one end of the bidirectional screw rod, and based on the driving of the first motor, the bidirectional screw rod rotates to drive the first side plate and the second side plate to move closer to or away from each other.

[0019] Preferably, the hot pressing mechanism includes

[0020] A side frame is arranged on one side of the lower pressing plate;

[0021] A first hydraulic cylinder is connected to the top wall of the side frame, and the output end of the first hydraulic cylinder penetrates downward through the top wall of the side frame;

[0022] The upper pressing plate is connected to the output end of the first hydraulic cylinder;

[0023] A heat dissipation fan is arranged inside the side frame, and the air outlet of the heat dissipation fan faces the lower pressing plate.

[0024] Preferably, the pushing mechanism includes

[0025] A second hydraulic cylinder is connected to one end of the second side plate through a fixing block;

[0026] The pushing body is connected to the output end of the second hydraulic cylinder;

[0027] A sliding rod is arranged in a slot opened along the length direction of the second side plate, and the pushing body is slidably connected to the sliding rod.

[0028] Preferably, the buffer mechanism includes

[0029] A telescopic rod, the first end of the telescopic rod is connected to the surface of the first side plate close to the second side plate;

[0030] The limiting plate is connected to the second end of the telescopic rod, and the surface of the limiting plate facing the second side plate is the buffering surface;

[0031] The spring is sleeved outside the telescopic rod, the first end of the spring is connected to the first side plate, and the second end of the spring is connected to the limiting plate.

[0032] Preferably, it further includes

[0033] The base;

[0034] The support frame is arranged on the base, and the lower pressing plate is arranged on the support frame;

[0035] The heating sheet is connected to the bottom of the lower pressing plate;

[0036] The insertion rod is inserted at the center of the first side plate, and the first end of the insertion rod penetrates through the first side plate and is connected to the limiting plate;

[0037] The handle is connected to the second end of the insertion rod.

[0038] Preferably, the conveying mechanism includes

[0039] The support table is arranged on one side of the lower pressing plate along the moving direction of the pushing body;

[0040] The roller is rotatably connected to both ends of the top of the support table;

[0041] The conveyor belt is arranged between the rollers;

[0042] The second motor, the output end of the second motor penetrates through the side wall of the support table and is connected to one end of the roller, and the roller is driven by the second motor to rotate to drive the conveyor belt to operate.

[0043] The beneficial effects of the present utility model: Due to the adoption of the above technical solutions, the present utility model fixes the battery cell through the clamping mechanism, and the first side plate and the second side plate that can move closer to or away from each other can flexibly adjust the distance according to the size of the battery cell. The battery cell after thermal processing can be pushed out through the pushing mechanism, without manual taking, which is labor-saving, safe and convenient for collection. Description of the Drawings

[0044] Figure 1 It is the overall structure schematic diagram of the hot pressing structure of the lithium battery device in the embodiment of the present utility model;

[0045] Figure 2 It is the sectional view of the hot pressing structure of the lithium battery device in the embodiment of the present utility model;

[0046] Figure 3 It is Figure 2 The partial enlarged schematic diagram at A of

[0047] Figure 4 This is a cross-sectional view of the hot pressing structure of the lithium battery device in the embodiment of the present utility model;

[0048] Figure 5 This is an axonometric view of the hot pressing structure of the lithium battery device in the embodiment of the present utility model;

[0049] Figure 6 This is a front view of the hot pressing structure of the lithium battery device in the embodiment of the present utility model;

[0050] Figure 7 This is a side view of the hot pressing structure of the lithium battery device in the embodiment of the present utility model.

[0051] In the attached drawings: 1. Lower pressing plate; 2. Clamping mechanism; 21. First side plate; 22. Second side plate; 23. Bidirectional screw; 24. First motor; 25. Limiting rod; 26. Chute; 3. Hot pressing mechanism; 31. Upper pressing plate; 32. Side frame; 33. First hydraulic cylinder; 34. Heat dissipation fan; 4. Pushing mechanism; 41. Pushing body; 42. Groove; 43. Fixed block; 44. Second hydraulic cylinder; 45. Slide bar; 5. Buffer mechanism; 51. Limiting plate; 52. Telescopic rod; 53. Spring; 54. Insert rod; 55. Handle; 6. Conveying mechanism; 61. Support table; 62. Roller; 63. Conveyor belt; 64. Second motor; 71. Base; 72. Support frame; 73. Heating sheet. Detailed implementation manners

[0052] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without making creative efforts shall fall within the protection scope of the present utility model.

[0053] It should be noted that, without conflict, the embodiments in the present utility model and the features in the embodiments may be combined with each other.

[0054] Next, the present utility model will be further described in conjunction with the accompanying drawings and specific embodiments, but it is not a limitation of the present utility model.

[0055] A hot pressing structure of a lithium battery device, as Figures 1 to 7 shown, includes,

[0056] A lower pressing plate 1 for placing workpieces to be processed;

[0057] A clamping mechanism 2, arranged on the lower pressing plate 1, and the clamping mechanism 2 includes a first side plate 21 and a second side plate 22 that can move closer to or away from each other;

[0058] The hot pressing mechanism 3 includes an upper pressing plate 31 located above the lower pressing plate 1, and the upper pressing plate 31 is controllably moved in the direction towards the lower pressing plate 1.

[0059] The pushing mechanism 4 is arranged on the lower pressing plate 1, and the pushing mechanism 4 includes a pushing body 41 that can move along the length direction of the second side plate 22.

[0060] Specifically, in the present utility model, the first side plate 21 and the second side plate 22 are symmetrically arranged on the front and rear sides of the lower pressing plate 1, and the length directions of the first side plate 21 and the second side plate 22 are arranged along the left and right of the lower pressing plate 1. In the present utility model, the first side plate 21 and the second side plate 22 are symmetrically arranged on the upper side of the lower pressing plate 1 in the front and rear. The present utility model realizes the forward or reverse movement of the first side plate 21 and the second side plate 22 on the front and rear sides of the lower pressing plate 1 through the clamping mechanism 2, and can flexibly adjust the distance according to the size of the workpiece to ensure the natural limit of the workpiece. Subsequently, the upper pressing plate 31 moves downward to hot press the workpiece.

[0061] In a preferred embodiment, a buffer mechanism 5 is further included, which is telescopically arranged on the surface of the first side plate 21 close to the second side plate 22, and a buffer surface for contacting the workpiece is arranged on the side of the buffer mechanism 5 facing the second side plate 22.

[0062] Specifically, the side of the workpiece just contacts the buffer surface and the buffer mechanism 5 is in a natural relaxed state. Subsequently, the upper pressing plate 31 moves downward to hot press the workpiece. The workpiece deforms during the hot pressing process, the buffer surface is squeezed, and the buffer mechanism 5 is compressed accordingly, which can limit and buffer the position of the workpiece, prevent deviation and falling, and improve the hot pressing efficiency.

[0063] In a preferred embodiment, a conveying mechanism 6 is further included, which is arranged on one side of the lower pressing plate 1 along the movement direction of the pushing body 41, and a conveyor belt 63 for conveying the workpiece is arranged on the conveying mechanism 6.

[0064] In a preferred embodiment, the workpiece is an electric core that will deform under hot processing.

[0065] In a preferred embodiment, the clamping mechanism 2 includes

[0066] The symmetrically arranged first side plate 21 and second side plate 22, and both ends of the first side plate 21 and both ends of the second side plate 22 are arranged in a sliding groove 26 opened on the lower pressing plate 1 along the movement direction of the first side plate 21 and the second side plate 22;

[0067] A bidirectional screw 23 is arranged in the sliding groove 26 corresponding to the first end of the first side plate 21, and both ends of the bidirectional screw 23 are respectively threadedly connected to the first side plate 21 and the second side plate 22;

[0068] The limiting rod 25 is arranged in the sliding groove 26 corresponding to the second end of the first side plate 21, and the second ends of the first side plate 21 and the second side plate 22 are slidably connected to the limiting rod 25;

[0069] The first motor 24, the output end of the first motor 24 penetrates through the side wall of the lower pressing plate 1 and is connected to one end of the bidirectional screw rod 23, and based on the driving of the first motor 24, the bidirectional screw rod 23 rotates to drive the first side plate 21 and the second side plate 22 to move closer to or away from each other.

[0070] Specifically, in the present utility model, the first side plate 21 and the second side plate 22 are symmetrically arranged front and back on the upper side of the lower pressing plate 1, sliding grooves 26 are opened at both the left and right ends of the upper side of the lower pressing plate 1, a bidirectional screw rod 23 is rotatably connected in the sliding groove 26 at one end, and both ends of the first side plate 21 and the second side plate 22 are slidably connected to the corresponding ends of the corresponding sliding grooves 26.

[0071] More specifically, both ends of the bidirectional screw rod 23 are threadedly connected to the corresponding ends of the first side plate 21 and the second side plate 22, a first motor 24 is fixedly connected to the position corresponding to the bidirectional screw rod 23 on one side of the lower pressing plate 1, the output end of the first motor 24 penetrates through the side wall of the lower pressing plate 1 and is fixedly connected to one end of the bidirectional screw rod 23, a limiting rod 25 is fixedly connected in the sliding groove 26 at one end, and both ends of the first side plate 21 and the second side plate 22 far from the bidirectional screw rod 23 are slidably connected to the limiting rod 25.

[0072] In the present utility model, by providing the sliding groove 26, the bidirectional screw rod 23, the first side plate 21, the second side plate 22, and the limiting rod 25, when the first motor 24 operates to drive the bidirectional screw rod 23 to rotate, the first side plate 21 and the second side plate 22 at the front and rear ends can be driven to move towards or away from each other, and the distance can be flexibly adjusted according to the size of the battery cell to realize the limitation of the battery cell.

[0073] In a preferred embodiment, the hot pressing mechanism 3 includes,

[0074] The side frame 32 is arranged on one side of the lower pressing plate 1;

[0075] The first hydraulic cylinder 33 is connected to the top wall of the side frame 32, and the output end of the first hydraulic cylinder 33 penetrates downward through the top wall of the side frame 32;

[0076] The upper pressing plate 31 is connected to the output end of the first hydraulic cylinder 33;

[0077] The heat dissipation fan 34 is arranged inside the side frame 32, and the air outlet of the heat dissipation fan 34 faces the lower pressing plate 1.

[0078] Specifically, a side frame 32 is provided at the rear side of the lower pressing plate 1. A first hydraulic cylinder 33 is fixedly connected to the top of the side frame 32. The output end of the first hydraulic cylinder 33 penetrates through the top wall of the side frame 32 and is fixedly connected to an upper pressing plate 31. A heat dissipation fan 34 is fixedly connected to the inner side of the side frame 32, which can dissipate heat to prevent the core from being damaged due to excessive temperature.

[0079] In a preferred embodiment, the pushing mechanism 4 includes

[0080] A second hydraulic cylinder 44, which is connected to one end of the second side plate 22 through a fixing block 43;

[0081] A pushing body 41, which is connected to the output end of the second hydraulic cylinder 44;

[0082] A sliding rod 45, which is arranged in a slot 42 opened along the length direction of the second side plate 22, and the pushing body 41 is slidably connected to the sliding rod 45.

[0083] Specifically, one end of the second side plate 22 is fixedly connected to a fixing block 43. One end of the fixing block 43 is fixedly connected to a second hydraulic cylinder 44. The output end of the second hydraulic cylinder 44 is fixedly connected to the pushing body 41. A sliding rod 45 is fixedly connected in the slot 42. The pushing body 41 is slidably connected to the sliding rod 45. When the second hydraulic cylinder 44 is started, it drives the pushing body 41 to slide along the sliding rod 45, and pushes the processed core onto a conveyor belt 63 on one side, eliminating the need for manual handling and facilitating collection.

[0084] More specifically, a sliding rod 45 is fixedly connected in the slot 42 in parallel with the second hydraulic cylinder 44. A through hole is opened on the pushing body 41, and the sliding rod 45 is slidably connected to the through hole, improving the stability of the pushing body 41 during pushing and avoiding deviation.

[0085] Specifically, a slot 42 is opened at the center of the second side plate 22 located at the rear end of the lower pressing plate 1. One end of the slot 42 is slidably connected to a pushing body 41. The pushing body 41 is in a long strip-shaped plate or rod-shaped structure, ensuring there is enough length to push the core; by setting the sliding rod 45, the pushing body 41, and the fixing block 43, when the second hydraulic cylinder 44 is started, it drives the pushing body 41 to slide along the sliding rod 45, and pushes the processed core onto a conveyor belt 63 on one side, eliminating the need for manual handling, being labor-saving and safe, and facilitating collection.

[0086] In a preferred embodiment, the buffer mechanism 5 includes

[0087] A telescopic rod 52, the first end of the telescopic rod 52 is connected to the side of the first side plate 21 close to the second side plate 22;

[0088] A limiting plate 51, which is connected to the second end of the telescopic rod 52. The surface of the limiting plate 51 facing the second side plate 22 is a buffer surface;

[0089] The spring 53 is sleeved outside the telescopic rod 52. The first end of the spring 53 is connected to the first side plate 21, and the second end of the spring 53 is connected to the limiting plate 51.

[0090] Specifically, inside the first side plate 21 at the front end of the lower pressing plate 1 of the present utility model, a limiting plate 51 is connected. Between the limiting plate 51 and the first side plate 21, telescopic rods 52 are symmetrically and fixedly connected. Springs 53 are sleeved outside the telescopic rods 52. One ends of the springs 53 are fixedly connected to the limiting plate 51, and the other ends of the springs 53 are fixedly connected to the first side plate 21. An insertion rod 54 is inserted and connected at the center of the first side plate 21. The outer end of the insertion rod 54 is fixedly connected with a handle 55. The other end of the insertion rod 54 penetrates through the first side plate 21 and is fixedly connected to the limiting plate 51. During the hot pressing process of the battery cell, the battery cell deforms, the limiting plate 51 is squeezed, the telescopic rods 52 contract, and the springs 53 are compressed, which can limit and buffer the position of the battery cell and prevent deviation.

[0091] More specifically, after the hot pressing is completed, the first motor 24 operates to drive the first side plate 21 and the second side plate 22 to reset. Pull the handle 55 outwards, thereby driving the insertion rod 54 to move outwards and driving the limiting plate 51 away from the battery cell, without affecting the subsequent pusher 41 to push the processed battery cell to one side conveyor belt 63.

[0092] More specifically, the present utility model is provided with a chute 26, a bidirectional screw rod 23, a limiting rod 25, a first side plate 21, a second side plate 22, a limiting plate 51, telescopic rods 52, and springs 53. The first motor 24 operates to drive the bidirectional screw rod 23 to rotate, and then drives the first side plate 21 and the second side plate 22 at the front and rear ends to move towards or away from each other. The distance can be flexibly adjusted according to the size of the battery cell, so that the side of the battery cell just contacts the limiting plate 51 and the spring 53 is in a natural relaxation state. Subsequently, the upper pressing plate 31 moves downwards to hot press the battery cell. During the hot pressing process of the battery cell, the battery cell deforms, the limiting plate 51 is squeezed, the telescopic rods 52 contract, and the springs 53 are compressed, which can limit and buffer the position of the battery cell, prevent deviation and dropping, and can improve the hot pressing efficiency.

[0093] In a preferred embodiment, it further includes

[0094] A base 71;

[0095] A support frame 72, arranged on the base 71, and the lower pressing plate 1 is arranged on the support frame 72;

[0096] A heating sheet 73, connected to the bottom of the lower pressing plate 1;

[0097] An insertion rod 54, inserted at the center of the first side plate 21, and the first end of the insertion rod 54 penetrates through the first side plate 21 to connect to the limiting plate 51;

[0098] The handle 55 is connected to the second end of the insertion rod 54.

[0099] Specifically, a support frame 72 is fixedly connected to the upper side of the base 71, the lower pressing plate 1 is fixedly connected to the support frame 72, and a heating sheet 73 is fixedly connected to the bottom of the lower pressing plate 1. After heating, the positive and negative electrode sheets of the battery cell are more easily adhered to the separator layer.

[0100] More specifically, the side frame 32 is fixed to the rear side of the base 71.

[0101] In a preferred embodiment, the conveying mechanism 6 includes

[0102] A support table 61 is provided on one side of the lower pressing plate 1 along the moving direction of the pushing body 41;

[0103] Rollers 62 are rotatably connected to both ends of the top of the support table 61;

[0104] A conveyor belt 63 is provided between the rollers 62;

[0105] A second motor 64, the output end of the second motor 64 penetrates through the side wall of the support table 61 and is connected to one end of the roller 62. The roller 62 is driven to rotate by the second motor 64 to drive the conveyor belt 63 to operate.

[0106] Specifically, a support table 61 is fixedly connected to one side of the lower pressing plate 1. Both ends of the top of the support table 61 are rotatably connected with rollers 62. A conveyor belt 63 is arranged between the rollers 62. One side of the upper end of the support table 61 is fixedly connected with a second motor 64. The output end of the second motor 64 penetrates through the side wall of the support table 61 and is fixedly connected to one end of the corresponding roller 62. When the second motor 64 operates, the corresponding roller 62 is driven to rotate, and thus the conveyor belt 63 between the two rollers 62 operates accordingly to convey the processed battery cell to the next process.

[0107] The complete working principle of the present utility model is as follows: When in use, the lithium battery cell to be hot-pressed is placed on the lower pressing plate 1, and the first motor 24 is started, thereby driving the bidirectional screw rod 23 to rotate, and then driving the first side plate 21 and the second side plate 22 at the front and rear ends to move towards each other. The distance can be adjusted according to the size of the battery cell so that the side of the battery cell just contacts the limiting plate 51 and the spring 53 is in a natural relaxed state;

[0108] Subsequently, the first hydraulic cylinder 33 and the heating sheet 73 are started, thereby driving the upper pressing plate 31 to move downward to hot-press the battery cell. The battery cell deforms during the hot-pressing process. The limiting plate 51 is squeezed, the telescopic rod 52 contracts, and the spring 53 is compressed, which can limit and buffer the position of the battery cell to prevent deviation. During this process, the heat dissipation fan 34 operates for heat dissipation to prevent the battery cell from being damaged due to excessive temperature;

[0109] After the hot pressing is completed, the first motor 24 operates, driving the bidirectional screw 23 to rotate, and then driving the first side plates 21 and the second side plates 22 at both front and rear ends to move in opposite directions. The first side plates 21 and the second side plates 22 are reset to the initial positions, and the handle 55 is pulled outwards, thereby driving the limiting plate 51 away from the battery cell;

[0110] The second hydraulic cylinder 44 is started, driving the pushing body 41 to slide along the slide rod 45, and pushing the processed battery cell onto the conveyor belt 63 on one side. There is no need for manual handling, which is convenient for collection.

[0111] The above are only the preferred embodiments of the present invention, and do not limit the implementation manners and protection scope of the present invention. For those skilled in the art, it should be realized that all equivalent replacements and obvious changes made by using the description and illustrations of the present invention should be included in the protection scope of the present invention.

Claims

1. A hot pressing structure for a lithium battery device, characterized in that, including, a lower pressing plate (1) for placing a workpiece to be processed; a clamping mechanism (2) arranged on the lower pressing plate (1), the clamping mechanism (2) including a first side plate (21) and a second side plate (22) that can move closer to or away from each other; a hot pressing mechanism (3), the hot pressing mechanism (3) including an upper pressing plate (31) located above the lower pressing plate (1), and the upper pressing plate (31) can be controllably moved in a direction towards the lower pressing plate (1); a pushing mechanism (4) arranged on the lower pressing plate (1), the pushing mechanism (4) including a pushing body (41) that can move along the length direction of the second side plate (22).

2. The hot pressing structure of the lithium battery device according to claim 1, wherein, It further includes a buffer mechanism (5) that is telescopically arranged on a surface of the first side plate (21) close to the second side plate (22), and a buffer surface for contacting the workpiece is arranged on a side of the buffer mechanism (5) facing the second side plate (22).

3. The hot pressing structure of the lithium battery device according to claim 1, characterized in that, It further includes a conveying mechanism (6) arranged on one side of the lower pressing plate (1) along the moving direction of the pushing body (41), and a conveyor belt (63) for conveying the workpiece is arranged on the conveying mechanism (6).

4. The hot pressing structure of the lithium battery device according to claim 2, characterized in that, The workpiece to be processed is a battery cell that will deform under hot processing.

5. The hot pressing structure of the lithium battery device according to claim 1, wherein, The clamping mechanism (2) includes, the symmetrically arranged first side plate (21) and the second side plate (22), and both ends of the first side plate (21) and both ends of the second side plate (22) are arranged in sliding grooves (26) opened on the lower pressing plate (1) along the moving direction of the first side plate (21) and the second side plate (22); a bidirectional screw rod (23) arranged in the sliding groove (26) corresponding to the first end of the first side plate (21), and both ends of the bidirectional screw rod (23) are respectively threadedly connected to the first side plate (21) and the second side plate (22); a limiting rod (25) arranged in the sliding groove (26) corresponding to the second end of the first side plate (21), and the second end of the first side plate (21) and the second end of the second side plate (22) are slidably connected to the limiting rod (25); a first motor (24), the output end of the first motor (24) penetrates through the side wall of the lower pressing plate (1) and is connected to one end of the bidirectional screw rod (23), and based on the driving of the first motor (24), the bidirectional screw rod (23) rotates to drive the first side plate (21) and the second side plate (22) to move closer to or away from each other.

6. The hot pressing structure of the lithium battery device according to claim 1, characterized in that, The hot pressing mechanism (3) includes, a side frame (32) arranged on one side of the lower pressing plate (1); a first hydraulic cylinder (33) connected to the top wall of the side frame (32), and the output end of the first hydraulic cylinder (33) penetrates downward through the top wall of the side frame (32); the upper pressing plate (31) connected to the output end of the first hydraulic cylinder (33); a heat dissipation fan (34) arranged inside the side frame (32), and the air outlet of the heat dissipation fan (34) faces the lower pressing plate (1).

7. The hot pressing structure of the lithium battery device according to claim 1, characterized in that The pushing mechanism (4) includes, a second hydraulic cylinder (44) connected to one end of the second side plate (22) through a fixing block (43); The pusher body (41) is connected to the output end of the second hydraulic cylinder (44). A slide bar (45) is arranged in a slot (42) formed in the second side plate (22) along the length direction, and the pusher body (41) is slidably connected to the slide bar (45).

8. The hot pressing structure of the lithium battery device according to claim 2, characterized in that The buffer mechanism (5) includes a telescopic rod (52), the first end of the telescopic rod (52) is connected to one side of the first side plate (21) close to the second side plate (22); a limiting plate (51), connected to the second end of the telescopic rod (52), and the surface of the limiting plate (51) facing the second side plate (22) is the buffer surface; a spring (53), sleeved outside the telescopic rod (52), the first end of the spring (53) is connected to the first side plate (21), and the second end of the spring (53) is connected to the limiting plate (51).

9. The hot pressing structure of the lithium battery device according to claim 8, characterized in that, It further includes a base (71); a support frame (72), arranged on the base (71), and the lower pressing plate (1) is arranged on the support frame (72); a heating sheet (73), connected to the bottom of the lower pressing plate (1); a plug rod (54), inserted in the center of the first side plate (21), and the first end of the plug rod (54) penetrates through the first side plate (21) and is connected to the limiting plate (51); a handle (55), connected to the second end of the plug rod (54).

10. The hot pressing structure of the lithium battery device according to claim 3, characterized in that, The conveying mechanism (6) includes a support table (61), arranged on one side of the lower pressing plate (1) along the moving direction of the pusher body (41); rollers (62), rotatably connected to both ends of the top of the support table (61); a conveyor belt (63), arranged between the rollers (62); a second motor (64), the output end of the second motor (64) penetrates through the side wall of the support table (61) and is connected to one end of the roller (62), and the roller (62) is driven to rotate by the second motor (64) to drive the conveyor belt (63) to operate.

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