Horizontal type temperature isostatic pressing device for solid-state battery

Abstract

The utility model relates to the technical field of isostatic pressing equipment, in particular to a horizontal type warm isostatic pressing device for a solid-state battery, which comprises a base and a rack arranged on the base, and further comprises a pressure cylinder structure and a cooling structure arranged on the rack, and a pressurizing structure connected to the base in a sliding manner; the pressure cylinder structure comprises a pressure cylinder assembly and a heating assembly arranged on the pressure cylinder assembly, the pressure cylinder assembly comprises an inner container and a shell arranged on the inner container, a plurality of steel ropes are arranged between the inner container and the shell, the steel ropes are wound around the inner container, and a spiral cooling cavity connected with the cooling structure is formed by the steel ropes; the pressurizing structure comprises a transverse moving seat, a pressurizing assembly arranged on the transverse moving seat and a driving assembly used for driving the pressurizing assembly. The steel ropes can effectively increase the structural strength of the inner container, and meanwhile, a spiral cooling cavity formed by the steel ropes can have a larger heat exchange area to achieve rapid cooling; in addition, materials can be directly put in or taken out from the side face through the transverse moving base, and the production efficiency is improved.

Description

TECHNICAL FIELD

[0001] The application relates to the technical field of isostatic pressing equipment, in particular to a horizontal warm isostatic pressing device for solid-state batteries. BACKGROUND

[0002] In the production process of solid-state batteries, a warm isostatic pressing device can be used for forming treatment of solid-state battery devices to improve the density of materials and battery performance, and plays an important role in the production process of solid-state batteries.

[0003] However, conventional warm isostatic pressing devices are vertical structures, and these devices need to be loaded and unloaded with the help of large hoisting equipment or ladders, and the operation steps are complex, which not only consumes time and effort but also is low in efficiency, and the structural strength of the inner container of the pressure cylinder is limited, and if the loading and unloading operation is not careful, the inner container is prone to deformation or rupture, etc., which restricts the performance improvement and application range of the device. At the same time, in terms of temperature control, these isostatic pressing devices often use straight-line cooling pipelines, and the heat exchange area is limited, and the cooling efficiency is poor, and it is difficult to quickly adjust the temperature in the pressure cylinder to the appropriate range, which affects the treatment effect of the solid-state battery materials. CONTENT OF THE UTILITY MODEL

[0004] The purpose of the present application is to provide a horizontal warm isostatic pressing device for solid-state batteries, which aims to improve the convenient use of the warm isostatic pressing device and the treatment effect of the materials, and to solve the problems of complex loading and unloading operation and poor cooling efficiency in the related art.

[0005] The embodiment of the present application provides a horizontal warm isostatic pressing device for solid-state batteries, which comprises a base and a rack arranged on the base, and further comprises a pressure cylinder structure, a cooling structure arranged on the rack, and a pressing structure slidingly connected to the base; the pressure cylinder structure comprises a pressure cylinder assembly and a heating assembly arranged on the pressure cylinder assembly, the pressure cylinder assembly comprises an inner container and an outer shell arranged on the inner container, a plurality of steel ropes are arranged between the inner container and the outer shell, the plurality of steel ropes are wound around the inner container, and the plurality of steel ropes form a spiral cooling cavity connected with the cooling structure; the pressing structure comprises a transverse seat, a pressing assembly arranged on the transverse seat, and a driving assembly for driving the pressing assembly.

[0006] Further, the pressure cylinder assembly further comprises a heat-conducting layer, and the heat-conducting layer is arranged on the side of the steel rope away from the inner container.

[0007] Further, the heating assembly comprises an electromagnetic coil, and the electromagnetic coil is wound around the heat-conducting layer along the length direction of the inner container.

[0008] Further, the base is provided with a plurality of horizontal moving tracks, and the plurality of horizontal moving tracks are located on one side of the pressure cylinder assembly; the horizontal moving seat is provided with a plurality of horizontal moving sliding grooves matched with the horizontal moving tracks, and the horizontal moving seat is arranged on the horizontal moving tracks through the horizontal moving sliding grooves.

[0009] Further, the horizontal moving seat is provided with a support frame, the support frame is provided with a plurality of horizontally arranged sliding rods, and the plurality of sliding rods are directed to the pressure cylinder assembly; the pressing assembly comprises a limiting plate slidingly connected to the sliding rods and a pressure rod arranged on the limiting plate, and the limiting plate is arranged on the driving assembly.

[0010] Further, the cooling structure comprises a cooling box arranged on the rack and a pressure pump arranged on the cooling box; the cooling box is provided with a liquid outlet pipe and a liquid inlet pipe, and the liquid outlet pipe and the liquid inlet pipe are connected to the spiral cooling cavity.

[0011] Further, the pressure cylinder structure further comprises a sensing assembly, and the sensing assembly comprises a temperature sensor arranged on the inner container.

[0012] The beneficial effects of the present application are as follows:

[0013] 1. The horizontal warm isostatic pressing device provided by the present application can effectively increase the structural strength of the inner container by arranging a plurality of steel ropes on the inner container, and the plurality of steel ropes form a spiral cooling cavity connected with the cooling structure, the spiral cooling cavity has a larger heat exchange area than a straight-line cooling pipeline, and the circulating flow of the cooling medium in the cooling cavity can efficiently take away heat to achieve rapid cooling; in addition, the horizontal structure is matched with the horizontal moving seat, and the pressing structure is in contact with or separated from the pressure cylinder structure through horizontal movement, so that the material can be directly put into or taken out of the pressure cylinder from the side without using complex hoisting equipment, the operation is more simple and intuitive, the feeding and discharging time is shortened, and the production efficiency is significantly improved.

[0014] 2. The horizontal warm isostatic pressing device provided by the present application can reduce the pressure fluctuation caused by the vertical gravity by arranging a plurality of horizontally arranged sliding rods on the support frame and sliding the pressing assembly along the sliding rods under the driving of the driving assembly, so that the pressure cover can stably move to the pressure cylinder assembly during movement, which helps to improve the precision of isostatic pressing, makes the density of the solid-state battery more uniform, and ensures the product quality. BRIEF DESCRIPTION OF DRAWINGS

[0015] Figure 1 is a structural schematic view of a horizontal warm isostatic pressing device for solid-state batteries provided by an embodiment of the present application;

[0016] Figure 2 is another structural schematic view of a horizontal warm isostatic pressing device for solid-state batteries provided by an embodiment of the present application.

[0017] Figure 3 is a cross-sectional view of a horizontal warm isostatic pressing device for solid-state batteries provided by an embodiment of the present application;

[0018] Figure 4 is a schematic view of the internal structure of a pressure cylinder structure in the present application;

[0019] Figure 5 is Figure 3 is a partial enlarged view of part A;

[0020] Figure 6 is a schematic view of a pressurizing structure in the present application.

[0021] BRIEF DESCRIPTION OF DRAWINGS

[0022] 1, base; 11, horizontal moving track; 2, frame; 3, internal force cylinder structure; 31, pressure cylinder assembly; 311, inner container; 3111, oil inlet pipe; 3112, oil outlet pipe; 312, steel rope; 3121, spiral cooling cavity; 313, heat conduction layer; 32, heating assembly; 33, sensing assembly; 4, cooling structure; 41, cooling box; 411, liquid inlet pipe; 412, liquid outlet pipe; 42, pressure pump; 5, pressurizing structure; 51, horizontal moving seat; 511, horizontal moving sliding groove; 512, support frame; 513, sliding rod; 52, pressurizing assembly; 521, limiting plate; 522, pressure cover; 53, driving assembly. DETAILED DESCRIPTION

[0023] In order to make the purpose, technical solutions and advantages of the present application more clear, the present application is further described in detail below in combination with the drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present application, and are not used to limit the present application.

[0024] It should be noted that although the functional modules are divided in the device schematic diagram, and the logical order is shown in the flowchart, in some cases, the steps shown or described can be executed 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 and claims and the above drawings are used to distinguish similar objects, and do not necessarily 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 the present application belongs. The terms used herein are only for the purpose of describing the embodiments of the present application, and are not intended to limit the present application.

[0026] Referring to Figure 1 , Figure 2 and Figure 3The embodiment of the application provides a horizontal warm isostatic pressing device for solid-state batteries, which comprises a base 1, a rack 2 arranged on the base 1, a pressure cylinder structure arranged on the rack 2, a cooling structure 4, and a pressurizing structure 5 slidably connected to the base 1. When the horizontal warm isostatic pressing device is in operation, the pressurizing structure 5 is separated from the pressure cylinder structure in a sliding manner to facilitate feeding and discharging, and the cooling structure 4 efficiently cools the pressure cylinder structure.

[0027] Specifically, the base 1 is used for supporting various structures, one end of the base 1 in the length direction is provided with the rack 2, the rack 2 is used for matching installation of the pressure cylinder structure and the cooling structure 4, the other end of the base 1 in the length direction is used for matching installation of the pressurizing structure 5, and a control panel is arranged on the rack 2 and electrically connected with the pressure cylinder structure, the cooling structure 4 and the pressurizing structure 5 to realize control.

[0028] Referring to Figure 3 , Figure 4 and Figure 5 , the pressure cylinder structure comprises a pressure cylinder assembly 31 arranged on the rack 2 and a heating assembly 32 arranged on the pressure cylinder assembly 31. The pressure cylinder assembly 31 comprises an inner container 311 and a shell arranged on the inner container 311, the inner container 311 has an opening, the opening of the inner container 311 faces the pressurizing structure 5, and the shell is made of steel. The inner container 311 is connected with an oil inlet pipe 3111 and an oil outlet pipe 3112 in the length direction, and when raw materials are put in, the inner container 311 is filled with pressure oil through the oil inlet pipe 3111 to cooperate with the pressurizing structure 5 to pressurize. The inner container 311 and the shell have a sandwich layer, and in order to ensure the structural strength of the pressure cylinder structure, a plurality of steel ropes 312 are arranged between the inner container 311 and the shell, the plurality of steel ropes 312 are arranged on the inner container 311 in a winding manner along the length direction of the inner container 311, and the plurality of steel ropes 312 form a steel rope 312 layer in a winding manner. At the same time, the plurality of steel ropes 312 are wound in a spiral form to form a spiral cooling cavity 3121 connected with the cooling structure 4.

[0029] In this way, the plurality of steel ropes 312 arranged in a winding manner can effectively increase the structural strength of the inner container 311, and at the same time, the plurality of steel ropes 312 form the spiral cooling cavity 3121 connected with the cooling structure 4, the spiral cooling cavity 3121 has a larger heat exchange area than a straight-line cooling pipeline, and can efficiently take away heat when a cooling medium circulates in the cooling cavity, so that rapid cooling is realized. It can be understood that other materials can also be wound between the inner container 311 and the shell to form the spiral cooling cavity 3121, such as a steel plate layer.

[0030] In order to ensure that the heat can be quickly conducted, the pressure cylinder assembly 31 further comprises a heat conduction layer 313, which is arranged on the side of the steel wire 312 away from the inner container 311. In the embodiment, the heat conduction layer 313 is made of aluminum nitride ceramic material, and the heat conduction layer 313 is laid on the steel wire 312 layer to form an aluminum nitride ceramic layer to ensure the heat conduction speed. The heating assembly 32 comprises an electromagnetic coil, which is arranged on the heat conduction layer 313 along the length direction of the inner container 311. When it is needed to heat the isostatic pressing device, the electromagnetic coil can be started to quickly heat, and the heat can be uniformly and quickly transferred to the inner container 311 along the length direction of the inner container 311 through the heat conduction layer 313.

[0031] In addition, the pressure cylinder structure further comprises a sensing assembly 33, which comprises a temperature sensor arranged at the bottom of the inner container 311. The temperature sensor is located at the bottom of the inner wall of the inner container 311 close to the center to ensure the measurement accuracy. When the inner container 311 is filled with the filler and is pressurized, the temperature sensor can monitor the temperature of the inner container 311 in real time, so as to facilitate the operator to control.

[0032] The cooling structure 4 comprises a cooling box 41 arranged on the rack 2 and a pressure pump 42 arranged on the cooling box 41. The cooling box 41 is located above the rack 2, and the cooling box 41 is filled with cooling liquid. The cooling box 41 has a liquid outlet pipe 412 and a liquid inlet pipe 411, which are connected to the spiral cooling cavity 3121. The liquid outlet pipe 412 is connected to one end of the spiral cooling cavity 3121 in the length direction, and the liquid inlet pipe 411 is connected to the other end of the spiral cooling cavity 3121 in the length direction. The liquid inlet pipe 411 is provided with a control valve, which can cooperate with the pressure pump 42 to control the flow of the liquid outlet pipe 412 and the liquid inlet pipe 411.

[0033] When the temperature in the pressure cylinder assembly 31 is too high and needs to be cooled, the operator sends an instruction through the control panel to start the pressure pump 42 and the control valve. The pressure pump 42 generates pressure to drive the cooling liquid in the cooling box 41 to flow into the spiral cooling cavity 3121 through the liquid inlet pipe 411, and after absorbing heat, the cooling liquid flows back to the cooling box 41 through the liquid outlet pipe 412 under the negative pressure of the pressure pump 42 to realize circulating cooling.

[0034] Reference Figure 6The pressurizing structure 5 comprises a horizontal moving seat 51, a pressurizing assembly 52 arranged on the horizontal moving seat 51, and a driving assembly 53 for driving the pressurizing assembly 52. In order to match the installation of the pressurizing structure 5, the base 1 is provided with a plurality of horizontal moving tracks 11, the plurality of horizontal moving tracks 11 are parallel to each other, and the plurality of horizontal moving tracks 11 are located on one side of the pressure cylinder assembly 31, and the opening of the inner container 311 faces the horizontal moving tracks 11. Correspondingly, the horizontal moving seat 51 is provided with a plurality of horizontal moving sliding grooves 511 for matching the horizontal moving tracks 11, and the horizontal moving seat 51 is arranged on the horizontal moving tracks 11 through the horizontal moving sliding grooves 511, so that the horizontal moving seat 51 can reciprocally slide along the horizontal moving sliding grooves 511. The horizontal moving seat 51 can be driven by a gas cylinder, a hydraulic cylinder or a screw rod structure.

[0035] The side of the horizontal moving seat 51 away from the rack 2 is provided with a support frame 512, and the support frame 512 is provided with a plurality of horizontally arranged sliding rods 513, and the plurality of sliding rods 513 face the pressure cylinder assembly 31. The pressurizing assembly 52 comprises a limiting plate 521 slidingly connected to the sliding rods 513 and a pressure rod arranged on the limiting plate 521. The limiting plate 521 is arranged on the driving assembly 53, and the driving assembly 53 is a gas cylinder.

[0036] Under the driving of the driving assembly 53, the limiting plate 521 and the pressure cover 522 connected thereto move horizontally towards the inner container 311. The pressure cover 522 is matched in size with the opening of the inner container 311, and the pressure cover 522 is pressed into the inner container 311 to pressurize. The limiting plate 521 slides on the horizontal sliding rod 513, and the sliding rod 513 can play a guiding and stabilizing role, so that the pressure cover 522 moves stably and uniformly applies pressure. When it is necessary to place electrode materials, the horizontal moving seat 51 is driven to move along the horizontal moving tracks 11 on the base 1 by using the horizontal moving sliding grooves 511 at the bottom of the horizontal moving seat 51, so as to drive the entire pressurizing structure 5 to move away from the opening of the inner container 311. After the electrode materials are placed, the horizontal moving seat 51 is pushed to reset, so as to perform subsequent pressurizing operation.

[0037] The working principle of the horizontal warm isostatic pressing device for solid-state batteries is as follows: after the materials are placed, the driving assembly 53 is started to push the limiting plate 521 and the pressure cover 522 connected thereto to move horizontally. The limiting plate 521 slides on the sliding rod 513 to ensure that the pressure cover 522 moves stably. The pressure cover 522 moves into the inner container 311 to close and apply pressure in the cylinder. The electromagnetic coil is electrified to generate electromagnetic effect, and the inner container 311 is electromagnetically heated. The heat-conducting layer 313 efficiently transfers heat to the inside of the inner container 311. The temperature sensor monitors the temperature in the cylinder in real time, so as to accurately control the heating process.

[0038] When the inner container 311 needs to be cooled, the control panel starts the pressure pump 42 and the control valve. Under the action of the pressure pump 42, the cooling liquid in the cooling tank 41 flows into the spiral cooling cavity 3121 formed by the steel ropes 312 through the liquid inlet pipe 411, absorbs the heat in the inner container 311, and then flows back to the cooling tank 41 through the liquid outlet pipe 412 under the negative pressure of the pressure pump 42, realizing the circulation cooling of the cooling liquid. The spiral cooling cavity 3121 is formed by the regular gap between the steel ropes 312, and the steel ropes 312 are wound on the outer wall of the inner container 311, effectively enhancing the structural strength of the inner container 311, so that it can withstand higher pressure and ensure the stable operation of the device in a high-pressure environment.

[0039] When feeding and discharging are needed, the horizontal moving seat 51 is driven to move back and forth on the base 1 to realize the opening and closing of the pressure cylinder structure. After the pressure cylinder structure is opened, the electrode material with static pressure can be placed or the finished product can be taken out.

[0040] The exemplary embodiments of the present disclosure are specifically shown and described above. It should be understood that the present disclosure is not limited to the detailed structure, arrangement or implementation method described herein; on the contrary, the present disclosure is intended to cover various modifications and equivalent arrangements within the spirit and scope of the appended claims.

Claims

1. A horizontal isostatic pressing device for solid-state batteries, comprising a base (1) and a frame (2) disposed on the base (1), characterized in that, It also includes a pressure cylinder structure, a cooling structure (4) disposed on the frame (2) and a pressurizing structure (5) slidably connected to the base (1); the pressure cylinder structure includes a pressure cylinder assembly (31) and a heating assembly (32) disposed on the pressure cylinder assembly (31), the pressure cylinder assembly (31) includes an inner liner (311) and an outer shell disposed on the inner liner (311), a plurality of steel ropes (312) are disposed between the inner liner (311) and the outer shell, the plurality of steel ropes (312) are wound around the inner liner (311), and the plurality of steel ropes (312) form a spiral cooling cavity (3121) connected to the cooling structure (4); the pressurizing structure (5) includes a transverse seat (51), a pressurizing assembly (52) disposed on the transverse seat (51) and a driving assembly (53) for driving the pressurizing assembly (52).

2. The horizontal isostatic pressing device for solid-state batteries according to claim 1, characterized in that, The pressure cylinder assembly (31) further includes a heat-conducting layer (313), which is disposed on the side of the steel rope (312) away from the inner liner (311).

3. The horizontal isostatic pressing device for solid-state batteries according to claim 2, characterized in that, The heating assembly (32) includes an electromagnetic coil, which is wound around the heat-conducting layer (313) along the length of the inner liner (311).

4. The horizontal isostatic pressing device for solid-state batteries according to claim 1, characterized in that, The base (1) is provided with a plurality of transverse tracks (11), and the plurality of transverse tracks (11) are located on one side of the pressure cylinder assembly (31); the transverse seat (51) has a plurality of transverse grooves (511) for cooperating with the transverse tracks (11), and the transverse seat (51) is disposed on the transverse tracks (11) through the transverse grooves (511).

5. A horizontal isostatic pressing device for solid-state batteries according to claim 4, characterized in that, The transverse seat (51) has a support frame (512), the support frame (512) is provided with a plurality of horizontally arranged slide rods (513), the plurality of slide rods (513) facing the pressure cylinder assembly (31); the pressurizing assembly (52) includes a limiting plate (521) slidably connected to the slide rods (513) and a pressure rod provided on the limiting plate (521), the limiting plate (521) being provided on the drive assembly (53).

6. A horizontal isostatic pressing device for solid-state batteries according to any one of claims 1-5, characterized in that, The cooling structure (4) includes a cooling box (41) disposed on the frame (2) and a pressure pump (42) disposed on the cooling box (41); the cooling box (41) has an outlet pipe (412) and an inlet pipe (411), the outlet pipe (412) and the inlet pipe (411) being connected to the spiral cooling chamber (3121).

7. A horizontal isostatic pressing device for solid-state batteries according to any one of claims 1-5, characterized in that, The pressure cylinder structure also includes a sensing component (33), which includes a temperature sensor disposed in the inner liner (311).

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