Thermal lamination device of lithium ion battery

Abstract

The utility model discloses a thermal lamination device of a lithium ion battery, which belongs to the technical field of lithium ion battery lamination, and comprises a processing table, a deviation rectifying platform, an adjusting assembly, a pole piece body, a lamination platform and manipulators, and four groups of heating plates are arranged at the bottoms of the two groups of manipulators, the top of the deviation rectifying platform and the top of the lamination platform; two sets of supporting frames are installed on the top of the machining table, and a control assembly is arranged between the two sets of supporting frames. According to the utility model, the processing table, the deviation rectifying platform, the adjusting assembly, the pole piece bodies, the lamination platform, the manipulator, the heating plate, the support frame and the control assembly are matched for use, so that heat can be exchanged by utilizing the contact opportunity of the manipulator and the deviation rectifying platform with each pole piece body, and a core package can reach a process temperature required by hot pressing when a lamination step is finished; the effect of not additionally increasing procedures and machining time is achieved, the duration of the hot pressing procedure can be effectively shortened, and the practicability of the device is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of lithium-ion battery stacking, and specifically relates to a thermal stacking device for lithium-ion batteries. Background Art

[0002] The stacking process is a relatively important step in the assembly process of lithium-ion batteries, that is, the positive and negative electrode sheets and the separator are compounded into a core package according to the specified order and size, so as to obtain the size of the target core package; then the positive and negative electrode sheets and the separator are adhered to each other as a whole through preheating pressing and hot pressing, so that it has good product performance and processability.

[0003] The existing stacking-preheating pressing-hot pressing process mainly has the following problems: 1. The process integration ability is not strong; there is no binding effect between the positive and negative electrode sheets and the separator during the stacking process. When the stacked battery cell is transferred to the hot pressing process, there is a risk of core package misalignment due to vibration; 2. The hot pressing process has a narrow process window suitable for the battery cell; in the hot pressing process, pressure is applied to the core package by two upper and lower hot pressing plates, and at the same time, the high temperature is transferred from the two large sides of the core package to the center by the pressing plates; for a core package with a higher thickness, the temperature transfer time is long, and the hot pressing process duration needs to be increased, which affects the production efficiency; at the same time, the outer electrode sheets are continuously pressed for too long at the target temperature, which will cause the powder of the electrode sheets to adhere to the separator, affecting the performance of the final product.

[0004] In the existing process, through preheating pressing - tunnel furnace, etc., in the state where the core package is shaped, the core package obtains a relatively uniform target temperature in a non-pressurized state through a production line in a high-temperature environment, and then is pressurized for a short time, and an ideal core package state can be obtained. This process requires an additional tunnel furnace device, and the floor area is much larger than that of the stacker and the hot press, and a large investment is required in terms of factory building, equipment budget and energy consumption.

[0005] Chinese Patent No. CN220456473U discloses a lithium-ion battery stacking device, which relates to the technical field of lithium-ion battery stacking. The lithium-ion battery stacking device includes a cross plate and a stacking mechanism. Four groups of support columns are fixedly installed on the top of the cross plate and are distributed in a rectangle. One end of the support column is fixedly installed with a top plate. A material box is fixedly installed on the top of the cross plate. The inside of the material box contains electrode sheets. The stacking mechanism is arranged on the top plate and includes a motor, an installation box, a first threaded rod, a first threaded block, a connecting block, a first connecting plate, an electric push rod, a second connecting plate and a suction cup.

[0006] There are still some obvious deficiencies in the above-mentioned lithium-ion battery stacking device during actual use. The device has the problem of being inconvenient to heat the electrode sheets. Therefore, we need to propose a thermal stacking device for lithium-ion batteries. Content of the Utility Model

[0007] The purpose of the present utility model is to provide a thermal lamination device for lithium-ion batteries, which has a structure convenient for heating the electrode sheet, so as to solve the problems put forward in the above-mentioned background technology.

[0008] To achieve the above purpose, the present utility model provides the following technical solution: A thermal lamination device for lithium-ion batteries, including a processing table, a deviation correction platform is arranged on the top of the processing table, and an adjustment component for adjusting the angle of the deviation correction platform is arranged between the bottom of the deviation correction platform and the top of the processing table. One side of the deviation correction platform and at one end of the top of the processing table is provided with an electrode sheet body, and the other side of the deviation correction platform and at the other end of the top of the processing table is provided with a lamination platform. Above the electrode sheet body and above the lamination platform are provided with two groups of manipulators. At the bottom of the two groups of manipulators, on the top of the deviation correction platform and on the top of the lamination platform are provided with four groups of heating plates. At both ends of the top of the processing table are fixedly installed two groups of support frames, and between one side of the two groups of support frames is provided a control component for controlling the two groups of manipulators.

[0009] Preferably, the lamination platform includes a fixing plate and limiting blocks. There are four groups of limiting blocks, and the bottoms of the four groups of limiting blocks are respectively fixedly installed at the four corners of the top of the fixing plate. The top of the fixing plate and between the four groups of limiting blocks is connected to the heating plate.

[0010] Preferably, the manipulator includes a lifting rod and an electric suction cup. The top of the electric suction cup is fixedly installed at the lifting end of the lifting rod, and the bottom of the electric suction cup is connected to the heating plate.

[0011] Preferably, the adjustment component includes a rotating disk fixedly installed at the bottom of the deviation correction platform and a rotating groove opened on the top of the processing table. The rotating disk and the inside of the rotating groove are in a matching setting, and the rotating disk is rotatably connected to the inner cavity of the rotating groove.

[0012] Preferably, a rotating rod is fixedly installed at the bottom of the rotating disk. One end of the rotating rod penetrates through the rotating groove and extends to the bottom of the processing table and is fixedly connected to a first bevel gear.

[0013] Preferably, the adjustment component further includes a first motor fixedly installed at the bottom of the processing table. The output end of the first motor is fixedly installed with a second bevel gear. The surface of the second bevel gear and the surface of the first bevel gear are in a matching setting, and the first bevel gear and the second bevel gear are meshed and connected together.

[0014] Preferably, the control component includes a guide rail base fixedly installed between the two sets of support frames. A guide rail groove is formed at the bottom of the guide rail base. A lead screw is rotatably connected inside the guide rail groove. One end of the lead screw penetrates through one end of the guide rail groove and extends to one side of the support frame to be connected with a second motor.

[0015] Preferably, two sliding blocks are adaptively arranged inside the guide rail groove. The inside of the two sliding blocks is threadedly connected to the surface of the lead screw. And the two sliding blocks are respectively slidably connected to both ends inside the guide rail groove through the lead screw. The bottoms of the two sliding blocks are respectively connected to the two manipulators.

[0016] Compared with the prior art, the beneficial effects of the present utility model are as follows:

[0017] Through the combined use of the processing table, the deviation rectifying platform, the adjusting component, the pole piece body, the stacking platform, the manipulator, the heating plate, the support frame and the control component, the present utility model can utilize the opportunity of the manipulator and the deviation rectifying platform to contact each pole piece body to exchange heat, so that the core package reaches the process temperature required for hot pressing when the stacking step is completed, achieving the effect of not additionally increasing the process and processing time, effectively shortening the duration of the hot pressing process, and increasing the practicability of the device.

[0018] Other features and advantages of the present utility model will be described in the subsequent specification. And, partly, they will be obvious from the specification, or can be understood by implementing the present utility model. The objectives and other advantages of the present utility model can be realized and obtained through the structures pointed out in the specification and the drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 is a structural schematic diagram of the present utility model;

[0020] Figure 2 is a front structural schematic diagram of the present utility model;

[0021] Figure 3 is a structural schematic diagram of the control component of the present utility model;

[0022] Figure 4 is a structural schematic diagram of the adjusting component of the present utility model.

[0023] In the figure: 1, processing table; 2, deviation rectifying platform; 3, pole piece body; 4, stacking platform; 401, fixed plate; 402, limiting block; 5, manipulator; 501, lifting rod; 502, electric suction cup; 6, heating plate; 7, support frame; 8, rotating disk; 9, rotating groove; 10, rotating rod; 11, first bevel gear; 12, first motor; 13, second bevel gear; 14, guide rail base; 15, guide rail groove; 16, lead screw; 17, second motor; 18, sliding block. Detailed implementation mode

[0024] Next, in combination with the drawings in the embodiments of the present utility model, the technical solutions in the embodiments of the present utility model will be clearly and completely described. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without making creative efforts shall fall within the protection scope of the present utility model.

[0025] Please refer to Figures 1-4 , the present utility model provides a technical solution: a thermal lamination device for a lithium-ion battery, including a processing table 1, a rectifying platform 2, an adjusting component, a pole piece body 3, a lamination platform 4, a manipulator 5, a heating plate 6, a support frame 7, and a control component.

[0026] Preferably, a rectifying platform 2 is arranged on the top of the processing table 1. An adjusting component for adjusting the angle of the rectifying platform 2 is arranged between the bottom of the rectifying platform 2 and the top of the processing table 1. A pole piece body 3 is arranged on one side of the rectifying platform 2 and at one end of the top of the processing table 1. A lamination platform 4 is arranged on the other side of the rectifying platform 2 and at the other end of the top of the processing table 1. Two groups of manipulators 5 are arranged above the pole piece body 3 and above the lamination platform 4. Four groups of heating plates 6 are arranged at the bottoms of the two groups of manipulators 5, on the top of the rectifying platform 2, and on the top of the lamination platform 4. Two groups of support frames 7 are fixedly installed at both ends of the top of the processing table 1. A control component for controlling the two groups of manipulators 5 is arranged between one sides of the two groups of support frames 7.

[0027] Specifically, through the coordinated use of the processing table 1, the rectifying platform 2, the adjusting component, the pole piece body 3, the lamination platform 4, the manipulator 5, the heating plate 6, the support frame 7, and the control component, the first group of manipulators 5 is used to grab the pole piece body 3 and move it to the top of the rectifying platform 2. Then, the adjusting component is used to control the rotation of the rectifying platform 2 to adjust the pole piece body 3 to an appropriate position. Then, the other group of manipulators 5 is used to grab the pole piece body 3 on the top of the rectifying platform 2 and move it to the top of the lamination platform 4. At the same time, through the heating plates 6 arranged at the bottoms of the two groups of manipulators 5, on the top of the rectifying platform 2, and on the top of the lamination platform 4, the heating plates 6 at the bottoms of the two groups of manipulators 5 are in a high-temperature state, and the heating plates 6 on the tops of the rectifying platform 2 and the lamination platform 4 are in a medium-temperature state. Thus, the opportunity for the manipulator 5 and the rectifying platform 2 to contact each pole piece body 3 can be utilized to allow heat exchange, so that the core package reaches the process temperature required for hot pressing when the lamination step is completed, achieving the effect of not additionally increasing the process and processing time, effectively shortening the duration of the hot pressing process, and increasing the practicability of the device.

[0028] Furthermore, through reasonable settings, the present utility model enables the thermal lamination process of the production of the electrode sheet body 3 without the need for additional equipment sites and high equipment funds; the electrode sheet body 3 is heated in a heat exchange manner piece by piece and in a stepped manner, without the need for an additional preheating step, and it can ensure that the core package has the process temperature required for hot pressing before reaching the hot pressing station; compared with the above other solutions, there are obvious advantages in equipment site investment, material scrap rate, and time cost.

[0029] Preferably, the lamination platform 4 includes: a fixing plate 401 and a limiting block 402. There are four groups of limiting blocks 402, and the bottoms of the four groups of limiting blocks 402 are respectively fixedly installed at the four corners of the top of the fixing plate 401. The top of the fixing plate 401 and between the four groups of limiting blocks 402 is connected to the heating plate 6, which can facilitate the lamination of the electrode sheet body 3 and also maintain the temperature of the electrode sheet body 3.

[0030] Preferably, the manipulator 5 includes: a lifting rod 501 and an electric suction cup 502. The top of the electric suction cup 502 is fixedly installed at the lifting end of the lifting rod 501, and the bottom of the electric suction cup 502 is connected to the heating plate 6, which can facilitate the grasping of the electrode sheet body 3 on the processing table 1, and at the same time, facilitate the high-temperature heating of the electrode sheet body 3.

[0031] Preferably, the adjusting assembly includes: a rotating disk 8, a rotating groove 9, a rotating rod 10, a first bevel gear 11, a first motor 12, and a second bevel gear 13. The rotating disk 8 is fixedly installed at the bottom of the alignment platform 2, the rotating groove 9 is opened at the top of the processing table 1, the rotating disk 8 and the inside of the rotating groove 9 are adapted to each other, and the rotating disk 8 is rotatably connected to the inner cavity of the rotating groove 9. A rotating rod 10 is fixedly installed at the bottom of the rotating disk 8, one end of the rotating rod 10 penetrates through the rotating groove 9 and extends to the bottom of the processing table 1 and is fixedly connected to a first bevel gear 11. The first motor 12 is fixedly installed at the bottom of the processing table 1, the output end of the first motor 12 is fixedly installed with a second bevel gear 13, the surface of the second bevel gear 13 and the surface of the first bevel gear 11 are adapted to each other, and the first bevel gear 11 and the second bevel gear 13 are meshed and connected together.

[0032] Specifically, through the coordinated use of the rotating disk 8, the rotating groove 9, the rotating rod 10, the first bevel gear 11, the first motor 12, and the second bevel gear 13, it can facilitate the control of the alignment platform 2 to rotate at an angle on the top of the processing table 1, conveniently adjust the electrode sheet body 3 placed on the top of the alignment platform 2 to an appropriate position, and facilitate the manipulator 5 to move the electrode sheet body 3 placed on the top of the alignment platform 2 to the top of the lamination platform 4.

[0033] Preferably, the control component includes a guide rail base 14, a guide rail groove 15, a lead screw 16, a second motor 17 and a sliding block 18. The guide rail base 14 is fixedly installed between two sets of support frames 7. A guide rail groove 15 is formed at the bottom of the guide rail base 14. A lead screw 16 is rotatably connected inside the guide rail groove 15. One end of the lead screw 16 penetrates through one end of the guide rail groove 15 and extends to one side of the support frame 7 and is connected to the second motor 17. Two sets of sliding blocks 18 are adaptively arranged inside the guide rail groove 15. The inside of the two sets of sliding blocks 18 is threadedly connected to the surface of the lead screw 16. And the two sets of sliding blocks 18 are respectively slidably connected to both ends inside the guide rail groove 15 through the lead screw 16. The bottoms of the two sets of sliding blocks 18 are respectively connected to the two sets of manipulators 5.

[0034] Specifically, through the combined use of the guide rail base 14, the guide rail groove 15, the lead screw 16, the second motor 17 and the sliding block 18, it is convenient to control the movement of the two sets of manipulators 5 on the top of the processing table 1, and it is convenient to control the manipulators 5 to move the pole piece body 3.

[0035] Although the embodiments of the present invention have been shown and described, for those of ordinary skill in the art, it can be understood that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principle and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A thermal lamination device for a lithium-ion battery, characterized in that: Comprising: Processing table (1); A deviation rectifying platform (2) is arranged at the top of the processing table (1), and a pole piece body (3) is arranged at one side of the deviation rectifying platform (2) and at one end of the top of the processing table (1); A lamination platform (4) is arranged at the other side of the deviation rectifying platform (2) and at the other end of the top of the processing table (1), and two groups of manipulators (5) are arranged above the pole piece body (3) and above the lamination platform (4); Wherein, heating plates (6) are arranged at the bottoms of the two groups of manipulators (5), at the top of the deviation rectifying platform (2), and at the top of the lamination platform (4).

2. The thermal lamination device for a lithium-ion battery according to claim 1, characterized in that: The lamination platform (4) comprises a fixing plate (401) and a limiting block (402); Four groups of limiting blocks (402) are arranged, and the bottoms of the four groups of limiting blocks (402) are respectively and fixedly installed at the four corners of the top of the fixing plate (401), and the heating plate (6) is connected between the four groups of limiting blocks (402) at the top of the fixing plate (401).

3. The thermal lamination device for a lithium-ion battery according to claim 1, wherein: The manipulator (5) comprises a lifting rod (501) and an electric suction cup (502); The top of the electric suction cup (502) is fixedly installed at the lifting end of the lifting rod (501), and the bottom of the electric suction cup (502) is connected with the heating plate (6).

4. The thermal lamination device for a lithium-ion battery according to claim 1, wherein: A regulating component for adjusting the angle of the deviation rectifying platform (2) is arranged between the bottom of the deviation rectifying platform (2) and the top of the processing table (1).

5. The thermal lamination device for a lithium-ion battery according to claim 4, wherein: The regulating component comprises a rotating disc (8) fixedly installed at the bottom of the deviation rectifying platform (2) and a rotating groove (9) opened at the top of the processing table (1); The rotating disc (8) is adaptively arranged with the inside of the rotating groove (9), and the rotating disc (8) is rotatably connected to the inner cavity of the rotating groove (9).

6. The thermal lamination device for a lithium-ion battery according to claim 5, wherein: A rotating rod (10) is fixedly installed at the bottom of the rotating disc (8), and one end of the rotating rod (10) penetrates through the rotating groove (9) and extends to the bottom of the processing table (1) and is fixedly connected with a first bevel gear (11).

7. The thermal lamination device for a lithium-ion battery according to claim 6, characterized in that: The regulating component further comprises a first motor (12) fixedly installed at the bottom of the processing table (1); A second bevel gear (13) is fixedly installed at the output end of the first motor (12), the surface of the second bevel gear (13) is adaptively arranged with the surface of the first bevel gear (11), and the first bevel gear (11) is meshed and connected with the second bevel gear (13).

8. The thermal lamination device for a lithium-ion battery according to claim 1, characterized in that: Two groups of support frames (7) are fixedly installed at both ends of the top of the processing table (1), and a control component for controlling the two groups of manipulators (5) is arranged between one sides of the two groups of support frames (7).

9. The thermal lamination device for a lithium-ion battery according to claim 8, wherein: The control component comprises a guide rail seat (14) fixedly installed between the two groups of support frames (7), a guide rail groove (15) is opened at the bottom of the guide rail seat (14), a lead screw (16) is rotatably connected to the inside of the guide rail groove (15), and one end of the lead screw (16) penetrates through one end of the guide rail groove (15) and extends to one side of the support frame (7) and is connected with a second motor (17).

10. The thermal lamination device for a lithium-ion battery according to claim 9, characterized in that: Two sets of sliding blocks (18) are adaptively arranged inside the guide rail groove (15). The insides of the two sets of sliding blocks (18) are threadedly connected to the surface of the lead screw (16). And the two sets of sliding blocks (18) are respectively slidably connected to both ends inside the guide rail groove (15) through the lead screw (16). The bottoms of the two sets of sliding blocks (18) are respectively connected to the two sets of manipulators (5).

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