Isostatic pressing equipment and solid-state battery production line

Abstract

The utility model discloses isostatic pressing equipment and a solid-state battery production line, and belongs to the technical field of isostatic pressing devices.The isostatic pressing equipment comprises a containing assembly, a pressing assembly and a pressing assembly, the containing assembly comprises a shell and a cover, the shell is provided with an isostatic pressing cavity, and the cover is movably connected with the shell so as to be used for opening and closing the isostatic pressing cavity; the restraining device is provided with a restraining cavity, the containing assembly can enter and exit from the restraining cavity, and when the containing assembly is arranged in the restraining cavity, the containing assembly at least abuts against the two opposite inner wall faces of the restraining cavity; and the variable pressure assembly is used for communicating with the isostatic pressing cavity so as to increase and reduce the internal pressure of the isostatic pressing cavity, and the pressurization safety of the isostatic pressing equipment can be improved.

Description

Technical Field

[0001] The utility model relates to the technical field of isostatic pressing devices, in particular to isostatic pressing equipment and a solid-state battery production line. Background Art

[0002] A solid-state battery is a battery that uses a solid electrolyte to replace the separator and liquid electrolyte in a traditional battery. A solid-state lithium battery can use a lithium metal anode to replace the graphite or silicon anode in a traditional lithium-ion battery. The lithium metal anode has a higher energy density than the traditional anode, allowing the battery to store more energy in the same volume. Compared with the liquid electrolyte, the solid electrolyte is difficult to closely adhere to the electrode. Therefore, in some processes, an isostatic pressing device is used to pressurize the formed battery cell to improve the adhesion effect between the solid electrolyte and the electrode.

[0003] In the related art, the current isostatic pressing device has low safety. During the process of pressurizing the battery cell, it is easy to crack and break due to excessive internal pressure. Content of the Utility Model

[0004] The utility model aims to at least solve one of the technical problems existing in the prior art. For this purpose, the utility model provides an isostatic pressing device, which is beneficial to improving the pressing safety of the isostatic pressing device.

[0005] The isostatic pressing device according to the first aspect embodiment of the utility model includes: a containing component, including a shell and a cover body. The shell has an isostatic pressing chamber, and the cover body is movably connected to the shell for opening and closing the isostatic pressing chamber; a restraint, having a restraint chamber, and the containing component can enter and exit the restraint chamber. When the containing component is placed in the restraint chamber, the containing component abuts against at least two inner wall surfaces opposite to the restraint chamber; a pressure-changing component, used to communicate with the isostatic pressing chamber to increase and decrease the internal pressure of the isostatic pressing chamber.

[0006] The isostatic pressing device according to the embodiments of the present utility model has at least the following beneficial effects: The accommodating assembly includes a housing and a cover. The housing has an isostatic pressing chamber, and the cover is movably connected to the housing for opening and closing the isostatic pressing chamber. After the isostatic pressing chamber is opened, the user can place the article to be isostatically pressed into the isostatic pressing chamber. Through the connection between the cover and the housing, the cover closes the isostatic pressing chamber, making the isostatic pressing chamber form a relatively airtight isostatic pressing space. The isostatic pressing device further includes a restraint. The restraint has a restraint chamber, and the accommodating assembly can be placed into the restraint chamber. The pressure-changing assembly is used to communicate with the isostatic pressing chamber. Through the operation of the pressure-changing assembly, the internal pressure of the isostatic pressing chamber can be increased. The accommodating assembly abuts against at least two inner wall surfaces of the restraint chamber opposite to each other. That is, the setting of the restraint can exert a binding force on the accommodating assembly, thereby resisting the outward expansion or dilation of the accommodating assembly, which is beneficial to restricting the deformation of the accommodating assembly and avoiding the problems of cracking and breaking of the accommodating assembly due to excessive internal pressure. That is, through the cooperation of the accommodating assembly and the restraint, the isostatic pressing device is beneficial to improving the pressure application safety of the isostatic pressing device.

[0007] According to some embodiments of the present utility model, the two ends of the accommodating assembly along the axial direction of the isostatic pressing chamber respectively abut against the two inner wall surfaces of the restraint chamber; and / or,

[0008] The two ends of the accommodating assembly along the radial direction of the isostatic pressing chamber respectively abut against the two inner wall surfaces of the restraint chamber.

[0009] Optionally, the two inner wall surfaces of the restraint chamber respectively abut against the two ends of the accommodating assembly along the axial direction of the isostatic pressing chamber. That is, after the accommodating assembly is placed into the restraint chamber, the restraint can exert a binding force on the accommodating assembly to limit the deformation of the accommodating assembly along the axial direction of the isostatic pressing chamber, thereby restricting the deformation of the accommodating assembly along the axial direction of the isostatic pressing chamber and avoiding the problems of cracking and breaking of the accommodating assembly due to excessive internal pressure. That is, through the cooperation of the accommodating assembly and the restraint, the isostatic pressing device is beneficial to improving the pressure application safety of the isostatic pressing device; optionally, the two inner wall surfaces of the restraint chamber respectively abut against the two ends of the accommodating assembly along the radial direction of the isostatic pressing chamber. That is, when the accommodating assembly is placed into the restraint chamber, the restraint can exert a binding force on the accommodating assembly to limit the deformation of the accommodating assembly along the radial direction of the isostatic pressing chamber, thereby restricting the deformation of the accommodating assembly along the radial direction of the isostatic pressing chamber and avoiding the problems of cracking and breaking of the accommodating assembly due to excessive internal pressure. That is, through the cooperation of the accommodating assembly and the restraint, the isostatic pressing device is beneficial to improving the pressure application safety of the isostatic pressing device.

[0010] According to some embodiments of the present utility model, the restraint has a first sliding portion, and the accommodating assembly has a second sliding portion. The first sliding portion is slidably connected to the second sliding portion, enabling the accommodating assembly to enter and exit the restraint chamber.

[0011] Specifically, the restraint device has a first sliding part, and correspondingly, the accommodating component has a second sliding part, and the first sliding part is slidably connected to the second sliding part to achieve the sliding connection between the restraint device and the accommodating component. Through the cooperation of the first sliding part and the second sliding part, the accommodating component can be quickly aligned with the restraint cavity and enter and exit the restraint cavity, which is beneficial to improving the matching degree between the accommodating component and the restraint device and the efficiency of the accommodating component entering and exiting the restraint cavity.

[0012] According to some embodiments of the present invention, the housing includes a container and a sleeve. The isostatic pressing chamber is arranged inside the container, the sleeve is sleeved on the outer periphery of the container, and the cover is movably connected to the container.

[0013] Specifically, the housing includes a container and a sleeve. The container is arranged inside the container, that is, the container serves to accommodate the article to be isostatically pressed. The sleeve is sleeved on the outer periphery of the container. The sleeve can exert a binding force on the container to limit the radial deformation along the isostatic pressing chamber, which is beneficial to restricting the radial deformation of the container due to excessive internal pressure in the isostatic pressing chamber. The cover is movably connected to the container for opening and closing the isostatic pressing chamber. Through the cooperation of the container and the sleeve, the isostatic pressing device is beneficial to restricting the deformation of the container and avoiding the problems of cracking and breaking of the container due to excessive internal pressure, which is beneficial to improving the pressurization safety of the isostatic pressing device.

[0014] According to some embodiments of the present invention, the accommodating component further includes a liquid supply ring. The liquid supply ring is connected to the container. The liquid supply ring is provided with an annular flow channel. A plurality of liquid outlet ports are communicated with the inner periphery of the annular flow channel, and the liquid outlet ports are all communicated with the isostatic pressing chamber. The outer periphery of the annular flow channel is communicated with a liquid inlet port, and the pressure changing component is used to communicate with the liquid inlet port.

[0015] The isostatic pressing device can use oil as the isostatic pressing medium. Specifically, the accommodating component further includes a liquid supply ring. The liquid supply ring is connected to the container. The liquid supply ring is provided with an annular flow channel. A plurality of liquid outlet ports communicating with the isostatic pressing chamber are opened on the inner periphery of the annular flow channel. The liquid inlet port opened on the outer periphery of the annular flow channel is used to communicate with the pressure changing component. Under the pressure changing action of the pressure changing component, the oil is supplied to the annular flow channel. After passing through the annular flow channel, the oil enters the isostatic pressing chamber from the plurality of liquid outlet ports. The setting of the plurality of liquid outlet ports is beneficial to realizing uniform pressurization inside the isostatic pressing chamber, improving the uniformity of isostatic pressing treatment and the isostatic pressing effect on the article, and avoiding the problems of cracking and breaking caused by excessive local pressure in the accommodating component, which is beneficial to improving the pressurization safety of the isostatic pressing device.

[0016] According to some embodiments of the present invention, the sleeve can be in contact with the inner wall surface of the restraint cavity, and the contact surface between the sleeve and the restraint cavity is a plane.

[0017] Specifically, after the accommodating component is placed into the restraint cavity, the outer surface of the sleeve can abut against the inner wall surface of the restraint cavity, and the abutting surface between the sleeve and the restraint cavity is a plane, which helps to avoid the problem that the accommodating component is extruded out of the restraint cavity due to the increase in the internal pressure of the accommodating component. Through the shape setting of the sleeve and the cooperation between the sleeve and the restraint device, the stability of the abutment between the accommodating component and the restraint cavity is enhanced, that is, the binding force exerted by the restraint cavity on the accommodating component is enhanced.

[0018] According to some embodiments of the present invention, the pressure-changing component includes an oil pressure pump, and the oil pressure pump can be communicated with the liquid inlet.

[0019] Considering that the load-bearing capacity of the oil liquid is relatively high, the isostatic pressing device uses the oil liquid as the isostatic pressing medium. The pressure-changing component includes an oil pressure pump, and the oil pressure pump can be communicated with the liquid inlet. Under the pressure-changing action of the oil liquid pump, the oil liquid is conveyed to the liquid inlet to realize the liquid supply to the isostatic pressing chamber. As the oil liquid continuously increases, the pressure in the isostatic pressing chamber gradually increases to realize the isostatic pressing treatment of the articles in the isostatic pressing chamber.

[0020] According to some embodiments of the present invention, the accommodating component further includes a rotation drive and a connecting seat. The connecting seat is movably connected to the housing and at least partially located in the isostatic pressing chamber. The rotation drive is in transmission connection with the connecting seat to drive the connecting seat to rotate.

[0021] The isostatic pressing device further includes a rotation drive and a connecting seat. The connecting seat is movably connected to the housing and at least partially located in the isostatic pressing chamber. When the cover is opened, the user can place the article into the isostatic pressing chamber and realize the detachable connection between the article and the connecting seat. After the cover closes the isostatic pressing chamber, during the isostatic pressing treatment, the rotation drive can drive the connecting seat to rotate to realize the rotation of the article relative to the isostatic pressing chamber, which is beneficial to improving the uniformity of the isostatic pressing treatment of the article. For the battery core of the solid-state battery, it is beneficial to realize the full contact between the solid electrolyte and the electrode sheet.

[0022] According to some embodiments of the present invention, the present invention further includes a material frame. The material frame has a cavity with a hollowed-out setting, and the cavity is used for accommodating the battery core. When the cover opens the isostatic pressing chamber, the material frame can enter and exit the isostatic pressing chamber.

[0023] The isostatic pressing device further includes a material frame, the material frame has a cavity provided with a hollow-out structure, and the cavity is used for accommodating the battery cell. Before the battery cell is placed into the isostatic pressing chamber, the user needs to put the battery cell into the cavity of the material frame, and then realize the feeding and discharging of the battery cell relative to the isostatic pressing chamber by means of placing or removing the material frame into or out of the isostatic pressing chamber. Since the cavity is provided with a hollow-out structure, when the material frame is located inside the isostatic pressing chamber, the isostatic pressing medium can directly pass through the material frame and act on the battery cell in the cavity. Through the setting of the material frame, the isostatic pressing device is beneficial to avoid the problem that the external mechanical equipment directly contacts the battery cell and causes damage to the battery cell, and the hollow-out cavity can accelerate the cooling of the battery cell after the isostatic pressing is completed. According to the solid-state battery production line of the second aspect embodiment of the present invention, it includes the isostatic pressing device shown in any item of the first aspect.

[0024] According to the solid-state battery production line of the embodiment of the present invention, it has at least the following beneficial effects: The solid-state battery production line includes the isostatic pressing device as described in any item of the first aspect. The accommodating assembly includes a housing and a cover body. The housing has an isostatic pressing chamber, and the cover body is movably connected to the housing for opening and closing the isostatic pressing chamber. After the isostatic pressing chamber is opened, the user can place the item to be isostatically pressed into the isostatic pressing chamber. Through the connection between the cover body and the housing, the cover body closes the isostatic pressing chamber, so that the isostatic pressing chamber forms a relatively airtight isostatic pressing space. The isostatic pressing device further includes a restraint, the restraint has a restraint cavity, the accommodating assembly can be placed into the restraint cavity, and the pressure-changing assembly is used to communicate with the isostatic pressing chamber. Through the operation of the pressure-changing assembly, the internal pressure of the isostatic pressing chamber can be increased. The accommodating assembly abuts against at least two inner wall surfaces opposite to the restraint cavity, that is, the setting of the restraint can exert a binding force on the accommodating assembly, so as to resist the outward expansion or dilation of the accommodating assembly, which is beneficial to restricting the deformation of the accommodating assembly and avoiding the problems of cracking and breaking of the accommodating assembly due to excessive internal pressure. That is, through the cooperation of the accommodating assembly and the restraint, the isostatic pressing device is beneficial to improve the pressure application safety of the isostatic pressing device.

[0025] The additional aspects and advantages of the present invention will be partially given in the following description, partially become obvious from the following description, or be understood through the practice of the present invention. Description of the Drawings

[0026] The following further describes the present invention in conjunction with the drawings and embodiments, where:

[0027] Figure 1 It is a schematic structural diagram of the accommodating assembly of the isostatic pressing device according to an embodiment of the present invention located outside the restraint cavity;

[0028] Figure 2 It is another perspective structural diagram of the accommodating assembly of the isostatic pressing device (omitting the pressure-changing assembly) according to an embodiment of the present invention located outside the restraint cavity;

[0029] Figure 3 Schematic diagram of the structure of the accommodating component of an isostatic pressing device according to an embodiment of the present utility model located inside the restraint cavity;

[0030] Figure 4 Longitudinal sectional view of the accommodating component of an isostatic pressing device according to an embodiment of the present utility model.

[0031] Reference numerals in the drawings:

[0032] 100, accommodating component; 110, housing; 111, container; 112, isostatic pressing chamber; 113, sleeve; 120, cover; 130, liquid supply ring; 131, annular flow channel; 132, liquid outlet; 133, liquid inlet; 140, second sliding part;

[0033] 200, restraint; 210, restraint cavity; 220, first sliding part;

[0034] 300, pressure changing component. Detailed implementation manners

[0035] The embodiments of the present utility model will be described in detail below. The examples of the embodiments are shown in the drawings, in which the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by referring to the drawings are exemplary and are only used to explain the present utility model and should not be construed as a limitation to the present utility model.

[0036] In the description of the present utility model, it should be understood that the orientation or positional relationship indicated by terms such as up and down, etc., is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as a limitation to the present utility model.

[0037] In the description of the present utility model, "a plurality of" refers to more than two. If there is a description of the first and the second, it is only for the purpose of distinguishing technical features and should not be construed as indicating or implying relative importance or implicitly indicating the quantity of the indicated technical features or implicitly indicating the sequence of the indicated technical features.

[0038] In the description of the present utility model, unless otherwise clearly defined, terms such as setting, installation, connection, etc. should be understood in a broad sense. Those skilled in the relevant technical field can reasonably determine the specific meanings of the above terms in the present utility model in combination with the specific content of the technical solution.

[0039] Referring to Figures 1 to 4 As shown, an isostatic pressing device according to an embodiment of the present utility model includes: an accommodating component 100, a restraint 200, and a pressure changing component 300.

[0040] Referring to Figure 1 and Figure 4 as shown, the accommodating assembly 100 includes a housing 110 and a cover 120. The housing 110 has an isostatic pressure chamber 112 for accommodating an article to be subjected to isostatic pressure treatment. The isostatic pressure chamber 112 is provided with a first opening. The cover 120 is movably connected to the housing 110 for opening and closing the first opening of the isostatic pressure chamber 112. Specifically, the cover 120 and the housing 110 can be connected by threads, interference fit, etc. to seal the first opening of the isostatic pressure chamber 112 by the cover 120.

[0041] Referring to Figure 2 and Figure 4 as shown, the restraint 200 has a restraint chamber 210. The restraint chamber 210 is provided with a second opening. The accommodating assembly 100 can pass through the second opening and enter and exit the restraint chamber 210. The pressure-changing assembly 300 is used to communicate with the isostatic pressure chamber 112 to increase and decrease the internal pressure of the isostatic pressure chamber 112, so as to perform isostatic pressure treatment on the article in the isostatic pressure chamber 112.

[0042] Referring to Figure 1 , Figure 3 and Figure 4 as shown, when the isostatic pressure chamber 112 is opened, the user can place the article to be subjected to isostatic pressure treatment into the isostatic pressure chamber 112. Through the connection between the cover 120 and the housing 110, the cover 120 can seal the isostatic pressure chamber 112, so that the isostatic pressure chamber 112 forms a relatively airtight isostatic pressure space. The isostatic pressure device further includes a restraint 200. The restraint 200 has a restraint chamber 210. The accommodating assembly 100 can be placed into the restraint chamber 210. The pressure-changing assembly 300 is used to communicate with the isostatic pressure chamber 112. Through the operation of the pressure-changing assembly 300, the internal pressure of the isostatic pressure chamber 112 can be increased. The accommodating assembly 100 abuts against at least two inner wall surfaces opposite to the restraint chamber 210, that is, the setting of the restraint 200 can exert a binding force on the accommodating assembly 100, thereby resisting the outward expansion or dilation of the accommodating assembly 100, which is beneficial to restricting the deformation of the accommodating assembly 100 and avoiding the problems of cracking and breaking of the accommodating assembly 100 due to excessive internal pressure. That is, through the cooperation between the accommodating assembly 100 and the restraint 200, the isostatic pressure device is beneficial to improving the pressurization safety of the isostatic pressure device.

[0043] Referring to Figure 1 , Figure 3 and Figure 4As shown, when the pressure inside the accommodating component 100 remains for a set time, i.e., the isostatic pressing process is completed, the pressure-changing component 300 can communicate with the isostatic pressing chamber 112, thereby reducing the internal pressure of the isostatic pressing chamber 112. After the internal pressure of the isostatic pressing chamber 112 drops to the preset pressure, the user can withdraw the accommodating component 100 from the restraint chamber 210, thereby eliminating the binding force exerted by the restraint device 200 on the accommodating component 100. Then, after opening the cover 120 to open the isostatic pressing chamber 112, the article that has completed the isostatic pressing process can be taken out of the isostatic pressing chamber 112.

[0044] It can be understood that the isostatic pressing device further includes a material frame. The material frame has a cavity provided with a hollow structure, and the cavity is used for accommodating the battery cells. When the cover 120 opens the isostatic pressing chamber 112, the material frame can enter and exit the isostatic pressing chamber 112.

[0045] Before the battery cells are placed into the isostatic pressing chamber 112, the user needs to put the battery cells into the cavity of the material frame, and then realize the loading and unloading of the battery cells relative to the isostatic pressing chamber 112 by means of placing the material frame into or removing it from the isostatic pressing chamber 112. Since the cavity is provided with a hollow structure, when the material frame is inside the isostatic pressing chamber 112, the isostatic pressing medium can directly pass through the material frame and act on the battery cells in the cavity. Through the setting of the material frame, this isostatic pressing device helps to avoid the problem that the external mechanical equipment directly contacts the battery cells and causes damage to the battery cells, and the hollow cavity can accelerate the heat dissipation of the battery cells after the isostatic pressing is completed.

[0046] Refer to Figure 1 、 Figure 3 and Figure 4 As shown in, it can be understood that the housing 110 includes a container 111 and a sleeve 113. The isostatic pressing chamber 112 is arranged inside the container 111, that is, the container 111 serves to accommodate the article to be subjected to isostatic pressing. The sleeve 113 is sleeved on the outer periphery of the container 111, and the sleeve 113 can exert a binding force on the container 111 to limit the deformation along the radial direction of the isostatic pressing chamber 112, which is beneficial to limiting the deformation of the container 111 due to excessive internal pressure in the isostatic pressing chamber 112. Considering the uniform pressure distribution of the container 111, the container 111 can be a cylinder.

[0047] Refer to Figure 1 、 Figure 2 and Figure 4 As shown in, the cover 120 is movably connected to the container 111 for opening and closing the isostatic pressing chamber 112. Through the cooperation of the container 111 and the sleeve 113, this isostatic pressing device is beneficial to limiting the radial deformation of the container 111 and avoiding the problems of cracking and breaking of the container 111 due to excessive internal pressure, that is, through the cooperation of the container 111 and the sleeve 113, this isostatic pressing device is beneficial to improving the pressure application safety of this isostatic pressing device.

[0048] The sleeve 113 can be an integrally formed metal part, which is beneficial to improving the strength and stiffness of the sleeve 113, enhancing the binding force exerted by the sleeve 113 on the container 111. An insertion groove is provided in the sleeve 113, and the container 111 is placed into the insertion groove, so that the outer surface of the container 111 is in close contact with the inner surface of the insertion groove, thereby realizing the sleeving and connection of the sleeve 113 and the container 111.

[0049] It should be understood that in some other embodiments, the sleeve 113 can be formed by winding packaging tapes layer by layer, which is beneficial to improving the fitting and connection effect between the sleeve 113 and the container 111.

[0050] Refer to Figure 2 、 Figure 3 and Figure 4 As shown, it can be understood that in this embodiment, considering that the oil has a high load-bearing capacity and stiffness, the isostatic pressing equipment can use oil as the isostatic pressing medium. Specifically, the accommodating assembly 100 further includes a liquid supply ring 130, and the liquid supply ring 130 is arranged between the cover 120 and the container 111.

[0051] Refer to Figure 2 、 Figure 3 and Figure 4 As shown, the liquid supply ring 130 is connected to the container 111. The liquid supply ring 130 is provided with an annular flow channel 131. A plurality of liquid outlet ports 132 are communicated with the inner circumference of the annular flow channel 131, and the liquid outlet ports 132 are all communicated with the isostatic pressing chamber 112. The outer circumference of the annular flow channel 131 is communicated with a liquid inlet port 133, and the pressure-changing assembly 300 is used to communicate with the liquid inlet port 133.

[0052] Refer to Figure 2 、 Figure 3 and Figure 4 As shown, correspondingly, the pressure-changing assembly 300 includes an oil pressure pump, and the oil pressure pump can be communicated with the liquid inlet port 133. Under the pressure-changing action of the oil pump, the oil is thus transported to the liquid inlet port 133 to realize the liquid supply to the isostatic pressing chamber 112. As the oil continuously increases, the pressure in the isostatic pressing chamber 112 gradually increases, realizing the isostatic pressing treatment of the article.

[0053] Refer to Figure 2 、 Figure 3 and Figure 4 As shown, after passing through the annular flow channel 131, the oil enters the isostatic pressing chamber 112 from a plurality of liquid outlet ports 132. The arrangement of the plurality of liquid outlet ports 132 is beneficial to realizing uniform pressurization inside the isostatic pressing chamber 112, beneficial to improving the uniformity of the isostatic pressing treatment, improving the isostatic pressing effect on the article, and beneficial to avoiding the problem of breakage caused by excessive local pressure in the accommodating assembly 100, beneficial to improving the pressure application safety of the isostatic pressing equipment, so as to realize the isostatic pressing treatment of the article in the isostatic pressing chamber 112.

[0054] Refer to Figure 2 、 Figure 3 and Figure 4 As shown, in order to improve the pressure building efficiency and pressure reducing efficiency of the pressure transformation component 300 for the isostatic pressure chamber 112, the pressure transformation component 300 may include a plurality of oil pumps. By means of the combined operation of the plurality of oil pumps, the isostatic pressure treatment efficiency of the article can be improved. At least one oil pump is used to communicate with the lower region of the isostatic pressure chamber 112 for recovering the oil in the isostatic pressure chamber 112.

[0055] It should be understood that in some other embodiments, the cover 120 is movably connected to the sleeve 113 to open and close the first opening of the isostatic pressure chamber 112.

[0056] It should be understood that in some other embodiments, the pressure transformation component 300 is an air pump. The isostatic pressure device can select gas as the isostatic pressure medium. Through the pressure transformation effect of the air pump, the gas pressure in the isostatic pressure chamber 112 is increased to realize the isostatic pressure treatment of the article in the isostatic pressure chamber 112.

[0057] Refer to Figure 1 、 Figure 2 and Figure 4 As shown, it can be understood that in this embodiment, the restraint 200 includes a frame body, and the restraint cavity 210 is arranged at the frame body. The following takes the direction in which the accommodating component 100 enters and exits the restraint cavity 210 as the left - right direction, and the direction in which the accommodating component 100 is along the axis of the isostatic pressure chamber 112 as the up - down direction as an example for description.

[0058] Refer to Figure 1 、 Figure 2 and Figure 4 As shown, the restraint cavity 210 is arranged to penetrate through in the left - right direction. The sleeve 113 includes an upper end plate and a lower end plate. The upper end plate and the lower end plate are respectively arranged at the upper end and the lower end of the container 111, and the upper end plate and the lower end plate are arranged in parallel. The inner wall surface of the restraint cavity 210 is a regular plane.

[0059] Refer to Figure 1 、 Figure 2 and Figure 4As shown, after the accommodating component 100 is placed into the restraining cavity 210, under the pressure increasing effect of the pressure-transforming component 300, the two inner wall surfaces of the restraining cavity 210 respectively abut against the two ends of the accommodating component 100 along the axis of the isostatic pressure chamber 112. That is, the upper wall surface of the restraining cavity 210 abuts against the upper end plate, and the lower wall surface of the restraining cavity 210 abuts against the lower end plate. The restraint device 200 can apply a binding force to the accommodating component 100 to limit the deformation of the accommodating component 100 along the axis of the isostatic pressure chamber 112, thereby restricting the deformation of the accommodating component 100 along the axis of the isostatic pressure chamber 112 and avoiding the problems of cracking and breaking of the accommodating component 100 due to excessive internal pressure. That is, through the cooperation of the accommodating component 100 and the restraint device 200, this isostatic pressure device is beneficial to improving the pressurization safety of this isostatic pressure device.

[0060] Referring to Figure 1 、 Figure 3 and Figure 4 As shown, when the accommodating component 100 is placed into the restraining cavity 210, the outer surface of the sleeve 113 can abut against the inner wall surface of the restraining cavity 210, and the abutting surface between the sleeve 113 and the restraining cavity 210 is a plane, which is beneficial to avoiding the problem that the accommodating component 100 is extruded out of the restraining cavity 210 due to the increase of the internal pressure of the accommodating component 100. Through the shape setting of the sleeve 113 and the cooperation between the sleeve 113 and the restraint device 200, this isostatic pressure device is beneficial to enhancing the stability of the abutment between the accommodating component 100 and the restraining cavity 210.

[0061] Referring to Figure 1 、 Figure 3 and Figure 4 As shown, it should be understood that in some other embodiments, the front end surfaces of the upper end plate and the lower end plate are flush with each other, and the rear end surfaces of the upper end plate and the lower end plate are flush with each other.

[0062] After the accommodating component 100 is placed into the restraining cavity 210, under the pressure increasing effect of the pressure-transforming component 300, the two inner wall surfaces of the restraining cavity 210 respectively abut against the two ends of the accommodating component 100 along the radius of the isostatic pressure chamber 112. That is, the front wall surface of the restraining cavity 210 abuts against the front end surfaces of the upper end plate and the lower end plate, and the rear wall surface of the restraining cavity 210 abuts against the rear end surfaces of the upper end plate and the lower end plate. The restraint device 200 can apply a binding force to the accommodating component 100 to limit the deformation of the accommodating component 100 along the radius of the isostatic pressure chamber 112, thereby restricting the deformation of the accommodating component 100 along the radius of the isostatic pressure chamber 112 and avoiding the problems of cracking and breaking of the accommodating component 100 due to excessive internal pressure. That is, through the cooperation of the accommodating component 100 and the restraint device 200, this isostatic pressure device is beneficial to improving the pressurization safety of this isostatic pressure device.

[0063] Referring to Figure 1 、 Figure 3 andFigure 4 As shown, it can be understood that in the present embodiment, the restraint 200 has a first sliding portion 220, and the accommodating component 100 has a second sliding portion 140. The first sliding portion 220 is slidably connected to the second sliding portion 140, so that the accommodating component 100 can enter and exit the restraint cavity 210. Through the cooperation of the first sliding portion 220 and the second sliding portion 140, the accommodating component 100 can be quickly aligned with the restraint cavity 210 and enter and exit the restraint cavity 210, which is beneficial to improve the degree of cooperation between the accommodating component 100 and the restraint 200, and improve the efficiency of the accommodating component 100 entering and exiting the restraint cavity 210.

[0064] Reference Figure 1 , Figure 3 and Figure 4 As shown, specifically, the first sliding portion 220 is a slide rail, which is arranged at the lower wall surface of the restraint chamber 210, and the two ends of the slide rail are extended left and right, and the second sliding portion 140 is a slide groove arranged at the lower end of the sleeve 113 of the accommodating component 100, and the slide groove is engaged with the slide rail and slidably connected, so that the accommodating component 100 can be quickly aligned with the restraint chamber 210 and enter and exit the restraint chamber 210, which is beneficial to improve the fit between the accommodating component 100 and the restraint 200, and improve the efficiency of the accommodating component 100 entering and exiting the restraint chamber 210.

[0065] It should be understood that in some other embodiments, the first sliding portion 220 is provided in a slide groove at the lower end surface of the restraint chamber 210, and the opening of the slide groove is open upward, and the two ends of the slide groove are extended left and right. The second sliding portion 140 is a slide rail provided at the lower end of the sleeve 113 of the accommodating component 100, and the slide rail is engaged with the slide groove and slidably connected, so that the accommodating component 100 can be quickly aligned with the restraint chamber 210 and enter and exit the restraint chamber 210, which is beneficial to improve the fit between the accommodating component 100 and the restraint 200, and improve the efficiency of the accommodating component 100 entering and exiting the restraint chamber 210.

[0066] It should be understood that in some other embodiments, the isostatic pressing device further includes a linear drive assembly, which is in transmission connection with the accommodating assembly 100 to drive the accommodating assembly 100 along the first sliding portion 220 and the second sliding portion 140 to enter and exit the restraining chamber 210, which is conducive to improving the efficiency of the accommodating assembly 100 entering and exiting the restraining chamber 210. The linear drive assembly can be a driving device such as a linear motor, an oil cylinder, or an air cylinder. The isostatic pressing device drives the accommodating assembly 100 to and from the restraining chamber 210 through the linear drive assembly, which is conducive to solving the problem that the accommodating assembly 100 and the restraining chamber 210 are too closely attached, making it difficult to separate the two by manpower.

[0067] It is understandable that in this embodiment, the accommodating component 100 further includes a rotation drive and a connecting seat. The connecting seat is movably connected to the housing 110 and at least partially located in the isostatic pressing chamber 112. The connecting seat is arranged in the lower region of the isostatic pressing chamber 112, and the rotation drive is in transmission connection with the connecting seat to drive the connecting seat to rotate.

[0068] When the cover 120 is opened, the user places the article into the isostatic pressing chamber 112 and realizes the detachable connection between the article and the connecting seat. After the cover 120 closes the isostatic pressing chamber 112, during the isostatic pressing process, the rotation drive can drive the connecting seat to rotate, so that the article rotates relative to the isostatic pressing chamber 112, which is beneficial to improving the uniformity of the isostatic pressing treatment of the article. For the core of a solid-state battery, it is beneficial to achieve the full contact between the solid electrolyte and the electrode sheet.

[0069] Specifically, the rotation drive can be a drive motor, and the output shaft of the drive motor is connected to the connecting seat to realize the rotation of the connecting seat around the axis of the isostatic pressing chamber 112.

[0070] It should be understood that a buckle is provided on the connecting seat, and the article to be isostatically pressed is connected through the buckle to improve the connection stability between the article and the connecting seat, so as to realize the function of driving the article to rotate during the isostatic pressing process.

[0071] It should be understood that an electromagnet can be arranged on the connecting seat, and the connection stability between the article and the connecting seat is improved by the adsorption of the electromagnet on the metal article, so as to realize the function of driving the article to rotate during the isostatic pressing process.

[0072] It is understandable that in this embodiment, the isostatic pressing chamber 112 of the isostatic pressing device includes a plurality of isostatic pressing regions distributed circumferentially. Through the setting of the plurality of isostatic pressing regions, the isostatic pressing device further includes a plurality of pressure sensors connected to the accommodating component 100. The pressure sensors correspond to the isostatic pressing regions one by one to realize the pressure monitoring of the article in different isostatic pressing regions.

[0073] The isostatic pressing device realizes the separate detection of the plurality of isostatic pressing regions through the plurality of pressure sensors. By obtaining the pressure values of the plurality of isostatic pressing regions, it is beneficial to assist in judging the isostatic pressing effect of the article in each isostatic pressing region, and performing post-treatment on the article whose isostatic pressing treatment does not meet the expectation to ensure the isostatic pressing effect of the article leaving the factory.

[0074] It should be noted that the inspection principle and structure of the pressure sensor belong to the prior art and will not be elaborated here.

[0075] It should be understood that in some other embodiments, the isostatic pressing chamber 112 of the isostatic pressing device includes a plurality of isostatic pressing regions distributed axially. By setting the plurality of isostatic pressing regions, isostatic pressing treatment of a plurality of articles can be achieved at one time. The isostatic pressing device further includes a plurality of pressure sensors connected to the accommodating assembly 100, and the pressure sensors correspond to the isostatic pressing regions one by one to monitor the pressure of the articles in different isostatic pressing regions.

[0076] The isostatic pressing device realizes separate detection of a plurality of isostatic pressing regions through a plurality of pressure sensors. By obtaining the pressure values of the plurality of isostatic pressing regions, it is beneficial to assist in judging the isostatic pressing effect of the articles in each isostatic pressing region, and perform post-treatment on the articles whose isostatic pressing treatment does not meet the expectations to ensure the isostatic pressing effect of the articles leaving the factory.

[0077] An embodiment of the solid-state battery production line of the present utility model includes: a loading assembly, a conveying assembly, and the isostatic pressing device shown in any one of the above embodiments.

[0078] The conveying assembly is used to convey the preliminarily laminated battery cells to the loading assembly. The loading assembly can convey the battery cells between the loading assembly and the isostatic pressing device.

[0079] The accommodating assembly 100 includes a housing 110 and a cover 120. The housing 110 has an isostatic pressing chamber 112. The cover 120 is movably connected to the housing 110 to open and close the isostatic pressing chamber 112. When the isostatic pressing chamber 112 is opened, the user can place the articles to be isostatically pressed into the isostatic pressing chamber 112. Through the connection between the cover 120 and the housing 110, the cover 120 can seal the isostatic pressing chamber 112, so that the isostatic pressing chamber 112 forms a relatively airtight isostatic pressing space. The isostatic pressing device further includes a restraint 200. The restraint 200 has a restraint chamber 210. The accommodating assembly 100 can be placed into the restraint chamber 210. The pressure-changing assembly 300 is used to communicate with the isostatic pressing chamber 112. Through the operation of the pressure-changing assembly 300, the internal pressure of the isostatic pressing chamber 112 can be increased. The accommodating assembly 100 abuts against at least two inner wall surfaces opposite to the restraint chamber 210. That is, the setting of the restraint 200 can exert a binding force on the accommodating assembly 100, thereby resisting the outward expansion or dilation of the accommodating assembly 100, which is beneficial to restricting the deformation of the accommodating assembly 100 and avoiding problems such as cracking and breaking of the accommodating assembly 100 due to excessive internal pressure. That is, through the cooperation of the accommodating assembly 100 and the restraint 200, the isostatic pressing device is beneficial to improving the pressurization safety of the isostatic pressing device.

[0080] It should be noted that the loading assembly can be a multi-axis manipulator, and the conveying assembly can be a conveyor belt.

[0081] The embodiments of the present utility model have been described in detail above in conjunction with the accompanying drawings. However, the present utility model is not limited to the above embodiments, and various changes can be made without departing from the spirit of the present utility model within the scope of knowledge possessed by those of ordinary skill in the relevant art.

Claims

1. Isostatic pressing equipment, characterized in that: include: The accommodating assembly comprises a shell and a cover, wherein the shell has an isostatic chamber, and the cover is movably connected to the shell to open and close the isostatic chamber; The restrainer has a restraint cavity, the accommodating component can enter and exit the restraint cavity, and when the accommodating component is placed in the restraint cavity, the accommodating component abuts against at least two opposite inner wall surfaces of the restraint cavity; The pressure changing assembly is used to communicate with the isostatic chamber to increase and decrease the internal pressure of the isostatic chamber.

2. The isostatic pressing device according to claim 1, characterized in that: The two ends of the accommodating component along the axial direction of the isostatic chamber are respectively in contact with the two inner wall surfaces of the restraint chamber; and / or, The two ends of the accommodating component along the radial direction of the isostatic chamber are respectively in contact with the two inner wall surfaces of the restraint chamber.

3. The isostatic pressing device according to claim 1, characterized in that: The restraint device has a first sliding portion, and the accommodating component has a second sliding portion. The first sliding portion is slidably connected to the second sliding portion, so that the accommodating component can enter and exit the restraint cavity.

4. The isostatic pressing device according to claim 1, characterized in that: The shell comprises a container and a sleeve, the isostatic pressure chamber is arranged in the container, the sleeve is sleeved on the outer circumference of the container, and the cover is movably connected to the container.

5. The isostatic pressing device according to claim 4, characterized in that: The accommodating component also includes a liquid supply ring, which is connected to the container and is provided with an annular flow channel. The inner circumference of the annular flow channel is connected to multiple liquid outlets, and the liquid outlets are all connected to the isostatic pressure chamber. The outer circumference of the annular flow channel is connected to a liquid inlet, and the voltage transformer component is used to communicate with the liquid inlet.

6. The isostatic pressing device according to claim 4, characterized in that: The sleeve can abut against the inner wall surface of the restraint chamber, and the abutment surface between the sleeve and the restraint chamber is a plane.

7. The isostatic pressing device according to claim 5, characterized in that: The pressure changing assembly comprises an oil pressure pump, and the oil pressure pump can be communicated with the liquid inlet.

8. The isostatic pressing device according to claim 1, characterized in that: The accommodating component also includes a rotary drive and a connecting seat, wherein the connecting seat is movably connected to the shell and is at least partially located in the isostatic pressure chamber, and the rotary drive is transmission-connected to the connecting seat to drive the connecting seat to rotate.

9. The isostatic pressing device according to claim 1, characterized in that: It also includes a material frame, which has a hollow cavity for accommodating the power core. When the cover opens the isostatic chamber, the material frame can enter and exit the isostatic chamber.

10. Solid-state battery production line, characterized by: Comprising the isostatic pressing equipment according to any one of claims 1 to 9.

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