Temperature isostatic pressing device for all-solid-state battery

Abstract

The utility model relates to the technical field of solid-state battery production equipment, in particular to a warm isostatic pressing device for an all-solid-state battery, which comprises a supporting structure, a core cylinder structure arranged on the supporting structure, a carrying structure and a pressurizing structure facing the core cylinder structure, the core cylinder structure comprises a core cylinder main body, and the core cylinder main body is coated with a structural layer and a heat preservation sleeve layer; the carrying structure comprises a mechanical arm assembly rotationally connected to the supporting structure and a clamping assembly arranged on the mechanical arm assembly, and the clamping assembly is located on one side of the core cylinder body and is close to or away from the core cylinder body. According to the core cylinder structure, the structural strength of the core cylinder body can be improved through the structural layer, heat exchange between the core cylinder and the outside can be reduced through the heat preservation sleeve layer so that heat preservation of the core cylinder body can be achieved, the clamping assembly clamps or loosens raw materials, the mechanical arm assembly drives the clamping assembly to move so that the raw materials can be put into the core cylinder body, and carrying by operators is not needed; and the operation efficiency and the processing quality of the warm isostatic pressing device are ensured.

Description

Technical Field

[0001] This application relates to the field of solid-state battery production equipment technology, and in particular to a thermostatic pressure device for all-solid-state batteries. Background Technology

[0002] In the manufacturing process of solid-state batteries, the positive electrode, solid electrolyte, and negative electrode need to be stacked together for assembly. In order to form a good solid-solid contact interface between the solid electrolyte and the electrode, reduce contact losses during cycling, and suppress lithium dendrite formation, pressure needs to be applied during the encapsulation and stacking process.

[0003] Thermostatic pressing (HSP) is based on Pascal's principle, using a liquid as the working medium. Through a pressurization system within a sealed container, it applies uniform pressure to the outer surface of the workpiece, improving the contact and density between component interfaces in solid-state cells. This enhances conductivity, increases energy density, and reduces volume changes during operation, making it particularly suitable for the packaging and stacking of all-solid-state batteries. However, conventional HSP equipment requires operators to handle raw materials when placing solid-state battery packs, which is cumbersome and inconvenient, and manual handling increases the risk of dropping and damaging materials. Furthermore, the significant temperature difference between the inside and outside of the core in conventional HSP equipment leads to rapid heat loss from the core, affecting processing quality. Therefore, conventional HSP equipment is poorly suited for solid-state battery production processes. Utility Model Content

[0004] The purpose of this application is to provide a temperature isostatic pressing device for all-solid-state batteries, which aims to improve the adaptability of conventional isostatic pressing equipment to solid-state battery production, improve the problem of heat loss from the core and the cumbersome operation caused by manual handling of raw materials.

[0005] This application provides a thermostatic pressure device for all-solid-state batteries, including a support structure, a core cylinder structure disposed on the support structure, a conveying structure, and a pressurizing structure facing the core cylinder structure; the core cylinder structure includes a core cylinder body, which is covered with a structural layer and an insulation layer; the conveying structure includes a robotic arm assembly rotatably connected to the support structure and a clamping assembly disposed on the robotic arm assembly, the clamping assembly being located on one side of the core cylinder body, and the clamping assembly being close to or away from the core cylinder body.

[0006] Furthermore, the structural layer includes several steel wire layers, which are arranged along the height direction of the core cylinder body.

[0007] Furthermore, the insulation layer includes an aerogel felt layer and a ceramic fiber sleeve. The aerogel felt layer is wrapped around the structural layer, and the ceramic fiber sleeve is fitted and installed on the side of the aerogel felt layer away from the structural layer.

[0008] Furthermore, the core structure also includes a heating assembly, which includes a heating wire installed through the core body and a temperature controller disposed on the support structure.

[0009] Furthermore, the robotic arm assembly includes a rotating shaft rotatably connected to the support structure, a first swing arm hinged to the rotating shaft, and a second swing arm hinged to the first swing arm; the clamping assembly is disposed on the second swing arm.

[0010] Furthermore, the clamping assembly includes a positioning disk having a cavity for receiving raw materials; a plurality of movable rods are installed through the positioning disk, the movable rods being close to or far from each other; and each movable rod is provided with a clamping block.

[0011] Furthermore, a protective pad is provided on the side of the clamping blocks that are close to each other.

[0012] Furthermore, the pressurizing structure includes a hydraulic cylinder disposed on the support structure and a static pressure plate disposed on the hydraulic cylinder, the static pressure plate facing the core cylinder body, the static pressure plate being close to or away from the core cylinder body.

[0013] The beneficial effects of this application are:

[0014] 1. This application discloses a temperature isostatic pressing (TIP) device for all-solid-state batteries. By incorporating a core cylinder structure and a transport structure within a support structure, the core cylinder structure utilizes a structural layer and an insulation layer. The structural layer increases the structural strength of the core cylinder body, while the insulation layer reduces heat exchange between the core cylinder and the external environment, thus achieving heat preservation and minimizing heat loss. The transport structure includes a robotic arm assembly and a clamping assembly. The clamping assembly grips or releases the raw material, while the robotic arm assembly moves the clamping assembly to place the raw material into the core cylinder body. This eliminates the need for manual handling, improving the speed of raw material input and personnel safety, and ensuring the operating efficiency and production quality of the TPI device.

[0015] 2. The isostatic pressing device for all-solid-state batteries of this application, when it is necessary to clamp the raw material, uses the robotic arm assembly to drive the positioning disk to move above the raw material and towards the raw material. After the positioning disk covers the raw material, the cavity of the positioning disk limits and gathers the raw material to concentrate it. Then, the moving rod uses the clamping block to clamp the raw material to be processed and place it into the core cylinder. The clamping assembly can quickly concentrate and position the raw material, and the structure is compact and the operation is efficient, ensuring operating efficiency and service life. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of a thermostatic isobaric device for all-solid-state batteries provided in an embodiment of this application;

[0017] Figure 2This is a schematic diagram of the core cylinder structure in an embodiment of this application;

[0018] Figure 3 This is a schematic diagram of the supporting structure and the pressurizing structure in the embodiments of this application;

[0019] Figure 4 This is a schematic diagram of the transport structure in an embodiment of this application;

[0020] Figure 5 This is another schematic diagram of the transport structure in the embodiments of this application.

[0021] Explanation of reference numerals in the attached figures:

[0022] 1. Support structure; 11. Support platform; 12. Support frame; 13. Mounting base; 2. Core cylinder structure; 21. Core cylinder body; 22. Structural layer; 221. Steel wire layer; 23. Insulation sleeve layer; 231. Aerogel felt layer; 232. Ceramic fiber sleeve; 24. Heating component; 241. Heating wire; 242. Temperature controller; 3. Transport structure; 31. Mechanical arm assembly; 311. Rotating shaft; 312. First swing arm; 313. Second swing arm; 32. Clamping assembly; 321. Positioning plate; 322. Moving rod; 323. Clamping block; 4. Pressurization structure; 41. Hydraulic cylinder; 42. Static pressure plate. Detailed Implementation

[0023] To make the objectives, technical solutions, and advantages of this application clearer, the following detailed description is provided in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and not intended to limit the scope of this application.

[0024] It should be noted that although functional modules are divided in the device schematic diagram and a logical order is shown in the flowchart, in some cases, the steps shown or described may be performed in a different order than the module division in the device or the order in the flowchart. The terms "first," "second," etc., in the specification, claims, and the aforementioned drawings are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence.

[0025] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used herein is for the purpose of describing embodiments of this application only and is not intended to limit this application.

[0026] Reference Figure 1 as well as Figure 2This application provides a temperature isostatic pressing (TIP) device for all-solid-state batteries, including a support structure 1, a core cylinder structure 2 disposed on the support structure 1, a conveying structure 3, and a pressurizing structure 4 facing the core cylinder structure 2. During operation of the TIP device, the conveying structure 3 is used to move raw materials into the core cylinder structure 2, the pressurizing structure 4 is used to seal and pressurize the core cylinder structure 2, and the core cylinder structure 2 is used to contain the raw materials and maintain temperature during pressurization.

[0027] Specifically, the support structure 1 is used to support and install various structures. The support structure 1 includes a support platform 11, on which there is a base for mounting the core cylinder structure 2 and the transport structure 3. A support frame 12 for mounting the pressurizing structure 4 is provided on the base. The core cylinder structure 2 includes a core cylinder body 21. The bottom of the core cylinder body 21 is fixedly mounted on the base. The upper part of the core cylinder body 21 has an opening that connects to the cavity inside the core cylinder body 21. To ensure the structural strength and insulation effect of the core cylinder body 21, the core cylinder body 21 is covered with a structural layer 22 and an insulation sleeve 23. The structural layer 22 is disposed on the outside of the core cylinder body 21, and the insulation sleeve 23 is disposed on the side of the structural layer 22 that is opposite to the core cylinder body 21.

[0028] In this embodiment, the structural layer 22 includes several steel wire layers 221, which are wound around the core cylinder body 21 and are evenly arranged along the height direction of the core cylinder body 21. The presence of wound steel wire layers 221 around the core cylinder body can evenly distribute the stress on the core cylinder body 21, improving its strength and extending its service life. The insulation layer 23 includes an aerogel felt layer 231 and a ceramic fiber sleeve 232. The aerogel felt layer 231 is wrapped around the structural layer 22, and the ceramic fiber sleeve 232 is fitted onto the side of the aerogel felt layer 231 away from the structural layer 22. The aerogel felt and ceramic fiber sleeve 232 insulate the core cylinder body 21, reducing heat exchange between the core cylinder body 21 and the outside environment, thereby reducing heat loss, maintaining temperature stability during static pressing, reducing energy consumption, and improving processing quality. It should be noted that the structural layer 22 and the insulation layer 23 can also be composed of other materials or structures. For example, the structural layer 22 can be a steel plate with a certain thickness, and the insulation layer 23 can be a rock wool layer, glass wool layer, or calcium silicate layer, etc.

[0029] The core cylinder structure 2 also includes a heating assembly 24, which includes several heating wires 241 threaded and installed in the core cylinder body 21 and a temperature controller 242 disposed in the support structure 1. The heating wires 241 are electric heating wires and are electrically connected to the temperature controller 242. In this embodiment, the core cylinder body 21 is divided into four uniform cavities along the circumferential direction. The four cavities correspond to four sets of raw materials for processing. The heating wires 241 are arranged along the circumferential direction of the core cylinder body 21 and are arranged one-to-one in the cavities, so that each cavity has its own corresponding heating wire 241 for heating.

[0030] Reference Figure 3 , Figure 4 as well as Figure 5 The transport structure 3 includes a robotic arm assembly 31 rotatably connected to the support structure 1 and a clamping assembly 32 disposed on the robotic arm assembly 31. The clamping assembly 32 is located on one side of the core cylinder body 21, and the clamping assembly 32 is close to or away from the core cylinder body 21. Specifically, the robotic arm assembly 31 includes a rotating shaft 311 rotatably connected to the support structure 1, a first swing arm 312 hinged to the rotating shaft 311, and a second swing arm 313 hinged to the first swing arm 312. One side of the base has a mounting seat 13 for mounting the transport structure 3. The rotating shaft 311 is rotatably connected to the mounting seat 13. The first swing arm 312 is hinged to the end of the rotating shaft 311 away from the mounting seat 13, and the second swing arm 313 is hinged to the end of the first swing arm 312 away from the rotating shaft 311. The clamping assembly 32 is disposed on the second swing arm 313.

[0031] The clamping assembly 32 includes a positioning disk 321, which has a cavity for receiving raw materials. A plurality of movable rods 322 are installed through the positioning disk 321, with the movable rods 322 moving close to or away from each other. Each movable rod 322 is equipped with a clamping block 323. A protective pad is provided on the side of the clamping blocks 323 that is close to each other. The protective pad is used to protect the raw materials from scratching or damage. The protective pad can be made of rubber or sponge. The movable rods 322 are arranged along the circumferential direction of the positioning disk 321 to form a clamping area. In this embodiment, the movable rods 322 are electric push rods, and there are two movable rods 322, located on opposite sides of the diameter of the positioning disk 321. The clamping blocks 323 have a certain length and curvature. The two clamping blocks 323 surround each other to form a cavity for restricting and clamping the raw materials. It is understood that the number and position of the movable rods 322 and the corresponding clamping blocks 323 can be adjusted according to actual needs.

[0032] When it is necessary to move the raw material, the positioning disk 321 moves above the raw material and engages with the raw material under the drive of the robotic arm assembly 31. The positioning disk 321 positions and concentrates the raw material. Then the moving rod 322 drives the clamping blocks 323 to move closer to each other to clamp and hold the raw material. After the raw material is moved to the opening above the core cylinder body 21, the moving rod 322 drives the clamping blocks 323 to release, and the raw material falls into the core cylinder body 21.

[0033] The pressurizing structure 4 includes a hydraulic cylinder 41 disposed on the support structure 1 and a static pressure plate 42 disposed on the hydraulic cylinder 41. The hydraulic cylinder 41 is disposed on the support frame 12, and the static pressure plate 42 is disposed on the output shaft of the hydraulic cylinder 41 and faces the core body 21. Under the drive of the hydraulic cylinder 41, the static pressure plate 42 moves closer to or further away from the core body 21 for processing.

[0034] The working principle of the isostatic pressing device for all-solid-state batteries disclosed in this application is as follows: The robotic arm assembly 31 moves the clamping assembly 32 to the raw material location. The clamping assembly 32 opens, causing the clamping block 323 to clamp the raw material. The raw material is then placed into the core body 21 by the robotic arm assembly 31. The steel wire wound around the core body 21 can evenly distribute the stress in the core body to ensure structural strength. An external power supply is connected, and the heating wire 241 heats the inside of the core body 21. The temperature controller 242 controls the temperature of the heating wire 241. The aerogel felt and ceramic fiber sleeve 232 insulate the core body 21, reducing heat exchange between the core body 21 and the outside environment, thereby reducing heat loss and maintaining temperature stability. Finally, the hydraulic cylinder 41 is opened, causing the static pressure plate 42 to press down and compact the raw material inside the core body 21.

[0035] Exemplary embodiments of this disclosure have been specifically shown and described above. It should be understood that this disclosure is not limited to the detailed structures, arrangements, or implementations described herein; rather, this disclosure is intended to cover various modifications and equivalent arrangements contained within the spirit and scope of the appended claims.

Claims

1. A thermostatic pressure device for all-solid-state batteries, comprising a support structure (1), characterized in that, It also includes a core cylinder structure (2), a conveying structure (3), and a pressurizing structure (4) disposed on the support structure (1); the core cylinder structure (2) includes a core cylinder body (21), which is covered with a structural layer (22) and a heat insulation layer (23); the conveying structure (3) includes a robotic arm assembly (31) rotatably connected to the support structure (1) and a clamping assembly (32) disposed on the robotic arm assembly (31), the clamping assembly (32) being located on one side of the core cylinder body (21), the clamping assembly (32) being close to or away from the core cylinder body (21).

2. The isostatic pressing device for all-solid-state batteries according to claim 1, characterized in that, The structural layer (22) includes a plurality of steel wire layers (221), which are arranged along the height direction of the core cylinder body (21).

3. The isostatic pressing device for all-solid-state batteries according to claim 2, characterized in that, The thermal insulation layer (23) includes an aerogel felt layer (231) and a ceramic fiber sleeve (232). The aerogel felt layer (231) is covered and disposed on the structural layer (22), and the ceramic fiber sleeve (232) is sleeved and installed on the side of the aerogel felt layer (231) away from the structural layer (22).

4. The isostatic pressing device for all-solid-state batteries according to claim 1, characterized in that, The core cylinder structure (2) further includes a heating assembly (24), which includes a heating wire (241) that passes through and is installed in the core cylinder body (21) and a temperature controller (242) that is disposed in the support structure (1).

5. A thermostatic isobaric apparatus for all-solid-state batteries according to any one of claims 1-4, characterized in that, The robotic arm assembly (31) includes a rotating shaft (311) rotatably connected to the support structure (1), a first swing arm (312) hinged to the rotating shaft (311), and a second swing arm (313) hinged to the first swing arm (312); the clamping assembly (32) is disposed on the second swing arm (313).

6. The isostatic pressing device for all-solid-state batteries according to claim 5, characterized in that, The clamping assembly (32) includes a positioning disk (321) having a cavity for receiving raw materials; a plurality of moving rods (322) are installed through the positioning disk (321), the plurality of moving rods (322) being close to or far from each other; the moving rods (322) are provided with clamping blocks (323).

7. The isostatic pressing device for all-solid-state batteries according to claim 6, characterized in that, The clamping blocks (323) are provided with protective pads on the sides that are close to each other.

8. The isostatic pressing device for all-solid-state batteries according to claim 1, characterized in that, The pressurizing structure (4) includes a hydraulic cylinder (41) disposed on the support structure (1) and a static pressure plate (42) disposed on the hydraulic cylinder (41). The static pressure plate (42) faces the core cylinder body (21) and is close to or away from the core cylinder body (21).

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