Isostatic pressing mechanism and battery production device

Abstract

The utility model relates to an isostatic pressing mechanism and a battery production device. The isostatic pressing mechanism is used for carrying out isostatic pressing treatment on materials, and the materials comprise solid-state batteries; the isostatic pressing mechanism comprises a charging barrel, a mounting frame and at least one filling piece. The charging barrel is provided with a containing cavity, the installation frame is arranged in the containing cavity and used for fixing materials, and the at least one filling piece is arranged in the containing cavity and located between the inner wall of the containing cavity and the installation frame. The containing cavity can be communicated with the external environment. Therefore, the volume of the space for accommodating the pressurizing medium in the accommodating cavity can be reduced, so that the injection time of the pressurizing medium can be shortened, and the isostatic pressing treatment efficiency of the isostatic pressing mechanism can be improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of batteries, in particular to an isostatic pressing mechanism and a battery production device. BACKGROUND

[0002] In the related art, the solid-state battery is usually subjected to isostatic pressing treatment. The specific process of isostatic pressing treatment is as follows: the solid-state battery is placed in a sealed container filled with a pressurizing medium, and a pressurizing system is used to apply a certain pressure to the solid-state battery. In this way, the densification of the solid-state battery can be improved.

[0003] However, the isostatic pressing efficiency of the conventional isostatic pressing machine is low. CONTENT OF THE UTILITY MODEL

[0004] Therefore, it is necessary to provide an isostatic pressing mechanism and a battery production device to improve the isostatic pressing efficiency of the isostatic pressing mechanism.

[0005] According to a first aspect of the present application, an isostatic pressing mechanism is provided for isostatic pressing treatment of a material, the material including a solid-state battery. The isostatic pressing mechanism includes a barrel, a mounting frame, and at least one filler. The barrel has a receiving cavity, the mounting frame is arranged in the receiving cavity and used to fix the material, and the at least one filler is arranged in the receiving cavity and located between the inner wall of the receiving cavity and the mounting frame. The receiving cavity is in communication with the external environment.

[0006] In the technical solution of the present application, the receiving cavity is in communication with the external environment. Therefore, when the isostatic pressing mechanism is used, the material can be fixed on the mounting frame, the mounting frame and the material on the mounting frame can be placed in the receiving cavity, and then the pressurizing medium can be introduced into the receiving cavity to perform isostatic pressing treatment on the solid-state battery of the material in the receiving cavity. In combination with the fact that the filler is located between the inner wall of the receiving cavity and the mounting frame, the volume of the space in the receiving cavity for accommodating the pressurizing medium can be reduced, which is conducive to reducing the injection time of the pressurizing medium and improving the isostatic pressing efficiency of the isostatic pressing mechanism.

[0007] In one embodiment, the isostatic pressing mechanism includes a plurality of fillers, and all the fillers are arranged around the mounting frame.

[0008] In this way, the plurality of fillers can be used to better fill the space between the inner wall of the receiving cavity and the mounting frame, which is conducive to improving the isostatic pressing efficiency of the isostatic pressing mechanism.

[0009] In one embodiment, the plurality of fillers includes two first fillers arranged opposite to each other and spaced apart along a first direction, and two second fillers arranged opposite to each other and spaced apart along a second direction. The first direction and the second direction intersect with each other. In one embodiment, the plurality of fillers includes two first fillers arranged opposite to each other and spaced apart along a first direction, and two second fillers arranged opposite to each other and spaced apart along a second direction. The first direction and the second direction intersect with each other.

[0010] Thus, the two first fillers can be positioned on opposite sides of the mounting frame along the first direction, and the two second fillers can be positioned on opposite sides of the mounting frame along the second direction, so that the plurality of fillers can be better filled in the space between the inner wall of the accommodating cavity and the mounting frame, thereby more favorably improving the isostatic pressing efficiency of the isostatic pressing mechanism.

[0011] In one of the embodiments, the filler has a matching surface and a limiting surface oppositely arranged along the target direction, the matching surface is adapted to the inner wall of the accommodating cavity, and the limiting surface is limited to one side of the mounting frame along the target direction. The target direction is perpendicular to the axial direction of the accommodating cavity.

[0012] Since the matching surface is adapted to the inner wall of the accommodating cavity, and the limiting surface is limited to one side of the mounting frame along the target direction, the filler can be more adaptively filled between the inner wall of the accommodating cavity and the mounting frame, thereby favorably reducing the volume of the space in the accommodating cavity for accommodating the pressurized medium, and thereby favorably improving the isostatic pressing efficiency of the isostatic pressing mechanism.

[0013] In one of the embodiments, the inner wall of the accommodating cavity includes a cylindrical surface, and the matching surface is configured as an arc surface adapted to the cylindrical surface.

[0014] Thus, the filler can be more adaptively filled between the inner wall of the accommodating cavity and the mounting frame, thereby favorably reducing the volume of the space in the accommodating cavity for accommodating the pressurized medium, and thereby favorably improving the isostatic pressing efficiency of the isostatic pressing mechanism.

[0015] In one of the embodiments, the filler is longitudinally arranged along the axial direction of the accommodating cavity.

[0016] Thus, the filler can be more filled between the inner wall of the accommodating cavity and the mounting frame, thereby favorably reducing the volume of the space in the accommodating cavity for accommodating the pressurized medium, and thereby favorably improving the isostatic pressing efficiency of the isostatic pressing mechanism.

[0017] In one of the embodiments, the cartridge includes an outer cylinder and an inner cylinder, the outer cylinder has a mounting cavity, and one end of the mounting cavity has a first opening in communication with the external environment. The inner cylinder is arranged in the mounting cavity, and the accommodating cavity is formed in the inner cylinder. The inner cylinder is provided with a first through hole in communication with the accommodating cavity and the mounting cavity, respectively.

[0018] Thus, the accommodating cavity can be in communication with the first opening through the first through hole, so that the accommodating cavity can be in communication with the external environment, and the pressurized medium can enter the accommodating cavity through the first through hole, thereby allowing the isostatic pressing treatment of the solid-state battery in the accommodating cavity by the pressurized medium.

[0019] In one of the embodiments, the filler is provided with a second through hole in communication with the accommodating cavity.

[0020] In this way, the space between the inner wall of the cavity and the mounting bracket can be filled by the filler, while the pressurized medium in the cavity can pass through the second through hole and fully contact the solid-state battery, thereby improving the isostatic pressure treatment effect of the solid-state battery.

[0021] In one embodiment, the inner cylinder includes a cylindrical body and two end portions. Along the axial direction of the receiving cavity, the two end portions are connected to opposite sides of the cylindrical body, and the cylindrical body and the two end portions enclose the receiving cavity. A first through hole is provided at least on the end portions. The cylindrical body has a second opening that communicates with both the mounting cavity and the receiving cavity.

[0022] In this way, on the one hand, it is convenient to put materials and fillers into the receiving cavity through the second opening, and on the other hand, the pressurized medium in the mounting cavity can also enter the receiving cavity through the second opening, which can improve the isostatic pressure treatment effect of solid-state batteries.

[0023] In one embodiment, a first through hole is provided on the cylindrical body and the end portion, respectively.

[0024] In this way, the pressurized medium in the mounting cavity can enter the receiving cavity through the first through hole on the cylinder and the end, which is beneficial to improving the isostatic pressure treatment effect of solid-state batteries.

[0025] In one embodiment, the filler is detachably attached to the inner cylinder.

[0026] It facilitates the installation of fillers inside the inner cylinder and the removal of fillers from the inner cylinder, thereby facilitating the placement of the assembly consisting of the mounting bracket and materials within the receiving cavity.

[0027] In one embodiment, the isostatic pressing mechanism further includes a limiting member corresponding to the filler. The limiting member is telescopically inserted through the corresponding filler along the axial direction of the receiving cavity, and is positioned on the inner cylinder.

[0028] The limiting member can be retracted into the corresponding filler to allow the filler to be placed into the receiving cavity. Then, the limiting member can be extended out of the corresponding filler and positioned on the inner cylinder. In this way, the filler can be positioned on the inner cylinder.

[0029] In one embodiment, the inner cylinder is provided with a limiting hole communicating with the receiving cavity. Along the axial direction of the receiving cavity, a part of the limiting member is telescopically inserted into the filling member, and another part of the limiting member is inserted into the limiting hole.

[0030] The limiting member can be retracted into the corresponding filling member first, so that the filling member can be placed into the receiving cavity. Then the limiting member can be extended out of the corresponding filling member and inserted into the limiting hole. In this way, the limiting member can be fixed on the inner cylinder, and the filling member can be positioned on the inner cylinder.

[0031] In one embodiment, the isostatic pressing mechanism further includes an elastic element corresponding to the limiting element, the elastic element extending along the axial direction of the receiving cavity. The elastic element is compressed and located between the corresponding limiting element and the corresponding filling element.

[0032] The limiting member can be retracted into the corresponding filling member first, so that the filling member can be placed into the receiving cavity. During this process, the elastic member is compressed. Then, the limiting member can be extended out of the corresponding filling member under the elastic restoring force of the elastic member and fixed on the inner cylinder, thereby positioning the filling member on the inner cylinder.

[0033] In one embodiment, at least one side of the filler is provided with a stepped groove along the axial direction of the receiving cavity. The stepped groove has a stepped surface perpendicular to the axial direction of the receiving cavity. A portion of the limiting member is disposed in the stepped groove and points along the bottom wall of the stepped groove toward the groove opening. The stepped surface is located on one side of the limiting member.

[0034] In this way, the movement of the limiting member can be restricted by the stepped surface, so that a part of the limiting member can be retracted into the stepped groove and confined between the groove opening and the stepped surface, which can improve the reliability of the limiting member.

[0035] In one embodiment, limiting members are provided on opposite sides of the filling member along the axial direction of the receiving cavity.

[0036] First, the limiting members on both sides can be retracted into the corresponding filling members so that the filling members can be placed into the receiving cavity. Then, the limiting members on both sides can be extended out of the corresponding filling members and limited to the inner cylinder. In this way, the filling members can be stably positioned on the inner cylinder.

[0037] In one embodiment, the inner cylinder is provided with observation windows that are respectively connected to the receiving cavity and the first opening.

[0038] The materials and pressurizing medium inside the containment cavity can be observed through the observation window, which makes it easy to understand the isostatic pressing process of the isostatic pressing mechanism on the solid-state battery.

[0039] In one embodiment, one end of the receiving cavity has a third opening that communicates with the external environment.

[0040] In this way, materials and pressurizing medium can be placed into the receiving cavity through the third opening, which facilitates isostatic pressing of the solid-state battery using the pressurizing medium.

[0041] In one embodiment, the filler is disposed against the inner wall of the receiving cavity and is fixed to the inner wall of the receiving cavity.

[0042] Since the filler is fixed to the inner wall of the cavity, the entire assembly consisting of the mounting bracket and the material on the mounting bracket can be placed into the space enclosed by the filler, which facilitates isostatic pressing of the solid-state battery using the isostatic pressing mechanism.

[0043] In one embodiment, the mounting bracket includes at least two clamping members spaced apart along a first direction, and a connector for connecting the at least two clamping members. Along the first direction, all solid-state batteries are confined between the at least two clamping members. At least one filler includes two first fillers spaced apart and opposite to each other along the first direction, with a recessed groove on the side of each first filler facing the other for partially accommodating the connector.

[0044] At least two clamping parts can be connected by connectors, thereby improving the stability of the material being positioned on the mounting frame. At the same time, the clearance groove design can be used to facilitate the partial storage of the connectors.

[0045] In one embodiment, the isostatic pressing mechanism further includes a third filler, which is disposed on one side of the solid-state battery and located between two adjacent clamping members.

[0046] In this way, the space between two adjacent clamping components, excluding the solid-state battery, can be fully utilized, and the volume of the space in the receiving cavity used to hold the pressurized medium can be further reduced, which in turn helps to reduce the injection time of the pressurized medium and thus helps to improve the isostatic pressing efficiency of the isostatic pressing mechanism.

[0047] In one embodiment, the volume of the material is V1, the volume of the mounting bracket is V2, the volume of all fillers is V3, and the volume of the receiving cavity is V4; wherein, the volume units of V1, V2, V3 and V4 are the same, and V4﹣V1﹣V2=V5, and the difference between V5 and V3 is less than or equal to a preset value.

[0048] Since the difference between V5 and V3 is less than or equal to the preset value, it can be understood that all fillers almost completely fill the space inside the containment cavity except for the material and the mounting bracket. In this way, the volume of the space inside the containment cavity used to contain the pressurized medium can be reduced, which in turn helps to reduce the injection time of the pressurized medium and thus helps to improve the isostatic pressing efficiency of the isostatic pressing mechanism.

[0049] According to a second aspect of this application, a battery production apparatus is provided, including an isostatic pressing mechanism of any of the above embodiments.

[0050] The above description is only an overview of the technical solution of this application. In order to better understand the technical means of this application and to implement it in accordance with the contents of the specification, and to make the above and other objects, features and advantages of this application more obvious and understandable, the following are specific embodiments of this application. Attached Figure Description

[0051] Various other advantages and benefits will become apparent to those skilled in the art upon reading the detailed description of the preferred embodiments below. The accompanying drawings are for illustrative purposes only and are not intended to limit the scope of this application. Furthermore, the same reference numerals denote the same parts throughout the drawings. In the drawings:

[0052] Figure 1 A schematic diagram of the isostatic pressing mechanism in one embodiment of this application is shown.

[0053] Figure 2 An exploded schematic diagram of an isostatic pressure mechanism according to an embodiment of this application is shown.

[0054] Figure 3 A schematic diagram of the inner cylinder and filler in one embodiment of this application is shown.

[0055] Figure 4 A schematic diagram of the mounting bracket and filler in one embodiment of this application is shown.

[0056] Figure 5 A top view of components such as the inner cylinder, mounting bracket, and filler is shown in one embodiment of this application.

[0057] Figure 6 A cross-sectional schematic diagram of components such as the inner cylinder, mounting bracket, and filler is shown in one embodiment of this application.

[0058] Figure 7 It shows Figure 6 An enlarged schematic diagram of point A.

[0059] Figure 8 A schematic diagram of the isostatic pressing mechanism in another embodiment of this application is shown.

[0060] Figure 9 An exploded schematic diagram of an isostatic pressure mechanism according to another embodiment of this application is shown.

[0061] Figure 10 A schematic diagram of the mounting bracket and materials in one embodiment of this application is shown.

[0062] Reference numerals: 10, isostatic pressing mechanism; 100, barrel; R, receiving cavity; 110, outer cylinder; Q, mounting cavity; K1, first opening; 120, inner cylinder; 121, cylinder body; 122, end; G1, first through hole; K2, second opening; G3, observation window; K3, third opening; 200, mounting bracket; 210, clamping component; 220, connecting component; 221, bolt; 222, nut; 300, filler; 310, first filler; 320, second filler; 301, mating surface; 302, limiting surface; G2, second through hole; C, stepped groove; C1, stepped surface; B, clearance groove; 410, limiting component; 411, first limiting part; 412, second limiting part; 420, elastic component; 20, material; 21, solid-state battery. Detailed Implementation

[0063] To make the above-mentioned objectives, features, and advantages of this application more apparent and understandable, the specific embodiments of this application are described in detail below with reference to the accompanying drawings. Many specific details are set forth in the following description to provide a thorough understanding of this application. However, this application can be implemented in many other ways different from those described herein, and those skilled in the art can make similar modifications without departing from the spirit of this application. Therefore, this application is not limited to the specific embodiments disclosed below.

[0064] In the description of this application, it should be understood that if terms such as "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential" appear, these terms indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application.

[0065] Furthermore, where the terms "first" and "second" appear, these terms are for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined with "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this application, where the term "multiple" appears, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0066] In this application, unless otherwise expressly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise expressly limited. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0067] In this application, unless otherwise expressly specified and limited, the use of descriptions such as "above" or "below" the second feature indicates that the first and second features are in direct contact or indirect contact via an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. Similarly, "below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0068] It should be noted that if an element is referred to as being "fixed to" or "set on" another element, it can be directly on the other element or there may be an intervening element. If an element is considered to be "connected to" another element, it can be directly connected to the other element or there may be an intervening element. If so, the terms "vertical," "horizontal," "upper," "lower," "left," "right," and similar expressions used in this application are for illustrative purposes only and do not represent the only possible implementation.

[0069] In related technologies, solid-state batteries are usually subjected to isostatic pressing. The specific process of isostatic pressing is as follows: the solid-state battery is placed in a sealed container filled with a pressurizing medium, and a certain pressure is applied to the solid-state battery using a pressurization system. This can improve the densification of the solid-state battery.

[0070] Research has revealed that traditional isostatic presses include a material basket. After multiple solid-state batteries are stacked into the basket, a large amount of space inside the basket remains unoccupied. This space also needs to be filled with oil, resulting in a longer oiling time and reduced efficiency.

[0071] To address the issue of low isostatic pressing efficiency in traditional isostatic presses, this application presents an isostatic pressing mechanism that allows the filler to be positioned within the space between the inner wall of the barrel's accommodating cavity and the solid-state battery, thereby reducing the oil injection time and improving both oil injection efficiency and isostatic pressing efficiency.

[0072] The isostatic pressing mechanism and / or battery production apparatus disclosed in the embodiments of this application can be used, but are not limited to, in the production of solid-state batteries.

[0073] Figure 1 A schematic diagram of the isostatic pressing mechanism according to one embodiment of this application is shown. Figure 2 An explosion diagram of an isostatic pressing mechanism according to an embodiment of this application is shown. Figure 3 A schematic diagram of the inner cylinder and filler in one embodiment of this application is shown. Figure 4 A schematic diagram of the mounting bracket and filler in one embodiment of this application is shown.

[0074] Please refer to the following: Figures 1-4 One embodiment of this application provides an isostatic pressing mechanism 10, which is used to perform isostatic pressing on a material 20, the material 20 including a solid-state battery 21.

[0075] Material 20 may include one solid-state battery 21, or it may include multiple solid-state batteries 21, without any specific limitation.

[0076] The isostatic pressing mechanism 10 includes a barrel 100, a mounting frame 200, and at least one filler 300.

[0077] The material cylinder 100 has a receiving cavity R, and a mounting bracket 200 is disposed within the receiving cavity R and is used to fix the material 20. At least one filler 300 is disposed within the receiving cavity R, and the at least one filler 300 is located between the inner wall of the receiving cavity R and the mounting bracket 200. The receiving cavity R is able to communicate with the external environment.

[0078] Cylinder 100 refers to a cylinder used to contain mounting bracket 200, at least one filler 300 and material 20.

[0079] The receiving cavity R refers to the cavity on the barrel 100 used to receive the mounting bracket 200, at least one filler 300, and the material 20.

[0080] Mounting bracket 200 refers to the component on the isostatic pressing mechanism 10 used to fix the solid-state battery 21.

[0081] The filler 300 refers to the component located on the isostatic pressing mechanism 10 between the inner wall of the receiving cavity R and the mounting bracket 200.

[0082] Since the containment cavity R can be connected to the external environment, when the isostatic pressing mechanism 10 is in use, the material 20 can be fixed on the mounting frame 200, and the mounting frame 200 and the material 20 on the mounting frame 200 can be placed into the containment cavity R together. Then, the pressurizing medium (such as heat transfer oil) is introduced into the containment cavity R, and the solid-state battery 21 of the material 20 in the containment cavity R is subjected to isostatic pressing treatment by the pressurizing medium. With the filler 300 located between the inner wall of the containment cavity R and the mounting frame 200, the volume of the space in the containment cavity R used to contain the pressurizing medium can be reduced, which is conducive to reducing the injection time of the pressurizing medium and thus improving the isostatic pressing treatment efficiency of the isostatic pressing mechanism 10.

[0083] In some embodiments, the isostatic pressing mechanism 10 includes a plurality of fillers 300, all of which are arranged around the mounting frame 200.

[0084] In this way, multiple fillers 300 can be used to better fill the space between the inner wall of the receiving cavity R and the mounting bracket 200, which is more conducive to improving the isostatic pressing efficiency of the isostatic pressing mechanism 10.

[0085] In some embodiments, the plurality of fillers 300 includes two first fillers 310 that are opposite to and spaced apart along a first direction F1, and two second fillers 320 that are opposite to and spaced apart along a second direction F2. The first direction F1 and the second direction F2 intersect each other with the axial direction of the receiving cavity R.

[0086] The axial direction of the receiving cavity R can be parallel to the axial direction of the material cylinder 100.

[0087] It can be that the first direction F1 and the second direction F2 are perpendicular to the axis of the receiving cavity R.

[0088] Optionally, along the first direction F1, at least a portion of the second filler 320 is located between the two first fillers 310.

[0089] Thus, the two first filler members 310 can be used to limit the mounting frame 200 on opposite sides along the first direction F1, and the two second filler members 320 can be used to limit the mounting frame 200 on opposite sides along the second direction F2. This allows the multiple filler members 300 to better fill the space between the inner wall of the receiving cavity R and the mounting frame 200, thereby improving the isostatic pressing efficiency of the isostatic pressing mechanism 10. In addition, the two first filler members 310 and the two second filler members 320 can be used to fix the mounting frame 200 in the receiving cavity R, facilitating the isostatic pressing of the solid-state battery 21 on the mounting frame 200.

[0090] In some embodiments, the filler 300 has a mating surface 301 and a limiting surface 302 disposed opposite to each other along a target direction. The mating surface 301 is adapted to the inner wall of the receiving cavity R, and the limiting surface 302 is limited to one side of the mounting bracket 200 along the target direction. The target direction is perpendicular to the axial direction of the receiving cavity R.

[0091] The mating surface 301 refers to the surface on the filler 300 that is adapted to the inner wall of the receiving cavity R.

[0092] The limiting surface 302 refers to the surface on the filler 300 that is opposite to the mating surface 301 and is limited to one side of the mounting bracket 200.

[0093] The target direction can be parallel to the first direction F1. It is understood that the first filling member 310 is provided with a mating surface 301 and a limiting surface 302.

[0094] The target direction can also be parallel to the second direction F2. It is understood that the second filler 320 is provided with a mating surface 301 and a limiting surface 302.

[0095] Since the mating surface 301 is adapted to the inner wall of the receiving cavity R, and the limiting surface 302 is limited to one side of the mounting bracket 200 along the target direction, the filler 300 can be more appropriately filled between the inner wall of the receiving cavity R and the mounting bracket 200, which helps to reduce the volume of the space in the receiving cavity R used to contain the pressurized medium, and thus helps to improve the isostatic pressure processing efficiency of the isostatic pressure mechanism 10.

[0096] In some embodiments, the inner wall of the receiving cavity R includes a cylindrical surface, and the mating surface 301 is configured as an arc surface adapted to the cylindrical surface.

[0097] In this way, the filler 300 can be more appropriately filled between the inner wall of the receiving cavity R and the mounting bracket 200, which helps to reduce the volume of the space in the receiving cavity R used to contain the pressurized medium, and thus helps to improve the isostatic pressure processing efficiency of the isostatic pressure mechanism 10.

[0098] In some embodiments, the filler 300 extends longitudinally along the axial direction of the receiving cavity R.

[0099] In this way, the filler 300 can fill more of the space between the inner wall of the receiving cavity R and the mounting bracket 200, which helps to reduce the volume of the space in the receiving cavity R used to contain the pressurized medium, and thus helps to improve the isostatic pressure processing efficiency of the isostatic pressure mechanism 10.

[0100] In some embodiments, the material cylinder 100 includes an outer cylinder 110 and an inner cylinder 120. The outer cylinder 110 has a mounting cavity Q, one end of which has a first opening K1 communicating with the external environment. The inner cylinder 120 is disposed within the mounting cavity Q, and a receiving cavity R is formed within the inner cylinder 120. The inner cylinder 120 is provided with a first through hole G1 that communicates with both the receiving cavity R and the mounting cavity Q.

[0101] The outer cylinder 110 refers to the cylinder on the material cylinder 100 used to house the inner cylinder 120, and the inner cylinder 120 refers to the cylinder on the material cylinder 100 located inside the outer cylinder 110. The mounting cavity Q refers to the cavity on the outer cylinder 110 used to house the inner cylinder 120.

[0102] The first opening K1 refers to the opening located at one end of the mounting cavity Q.

[0103] The first through hole G1 refers to a hole on the inner cylinder 120 that is connected to the receiving cavity R and the mounting cavity Q respectively, and the first through hole G1 allows the pressurized medium to pass through.

[0104] Thus, the cavity R can be connected to the first opening K1 through the first through hole G1, thereby connecting the cavity R to the external environment. The pressurizing medium can enter the cavity R through the first through hole G1, and the pressurizing medium can be used to perform isostatic pressure treatment on the solid battery 21 in the cavity R.

[0105] In some embodiments, please refer to Figures 4-6 The filler 300 is provided with a second through hole G2 that communicates with the receiving cavity R.

[0106] In this way, the space between the inner wall of the cavity R and the mounting bracket 200 can be filled by the filler 300, while also facilitating the passage of the pressurized medium in the cavity R through the second through hole G2 and making full contact with the solid-state battery 21, thereby improving the isostatic pressure treatment effect of the solid-state battery 21.

[0107] In some embodiments, the inner cylinder 120 includes a cylindrical portion 121 and two end portions 122. Along the axial direction of the receiving cavity R, the two end portions 122 are connected to opposite sides of the cylindrical portion 121. The cylindrical portion 121 and the two end portions 122 enclose the receiving cavity R. A first through hole G1 is provided at least on the end portions 122, and the cylindrical portion 121 is provided with a second opening K2 that communicates with the mounting cavity Q and the receiving cavity R respectively.

[0108] The cylindrical part 121 refers to a generally cylindrical component located on the inner cylinder 120.

[0109] End portion 122 refers to a component located on the inner cylinder 120 at one end of the cylinder portion 121 along the axial direction of the receiving cavity R. End portion 122 may be generally plate-shaped.

[0110] The second opening K2 refers to the opening provided on the cylindrical part 121 and connected to the mounting cavity Q and the receiving cavity R respectively.

[0111] In this way, on the one hand, it is convenient to put the material 20 and the filler 300 into the receiving cavity R through the second opening K2, and on the other hand, the pressurized medium in the mounting cavity Q can also enter the receiving cavity R through the second opening K2, which can improve the isostatic pressure treatment effect of the solid-state battery 21.

[0112] In some embodiments, the second filler 320 closer to the second opening K2 is at least partially exposed through the second opening K2, and the second through hole G2 on the second filler 320 is connected to the mounting cavity Q.

[0113] In this way, the pressurized medium in the installation cavity Q can enter the receiving cavity R through the second opening K2, and this part of the pressurized medium can pass through the second through hole G2 on the second filler 320 and come into contact with the solid-state battery 21, which can improve the isostatic pressure treatment effect of the solid-state battery 21.

[0114] In some embodiments, the cylindrical portion 121 and the end portion 122 are respectively provided with a first through hole G1.

[0115] In this way, the pressurized medium in the mounting cavity Q can enter the receiving cavity R through the first through hole G1 on the cylinder part 121 and the end part 122, which is beneficial to improving the isostatic pressure treatment effect of the solid-state battery 21.

[0116] In some embodiments, in the two second fillers 320, the second through hole G2 on the second filler 320 located further away from the second opening K2 is connected to the first through hole G1 on the cylinder portion 121.

[0117] In this way, the pressurized medium in the mounting cavity Q can pass through the first through hole G1 on the cylinder part 121 and the second through hole G2 on the second filler 320 in sequence, and then come into contact with the solid battery 21 in the receiving cavity R, which is beneficial to improving the isostatic pressure treatment effect of the solid battery 21.

[0118] In some embodiments, the filler 300 is detachably connected to the inner cylinder 120.

[0119] It facilitates the installation of the filler 300 inside the inner cylinder 120 and the removal of the filler 300 from the inner cylinder 120, thereby facilitating the placement of the assembly consisting of the mounting bracket 200 and the material 20 inside the receiving cavity R.

[0120] In some embodiments, the isostatic pressing mechanism 10 further includes a limiting member 410 corresponding to the filler 300. The limiting member 410 is telescopically inserted into the corresponding filler 300 along the axial direction of the receiving cavity R, and the limiting member 410 is limited to the inner cylinder 120.

[0121] The limiting component 410 refers to the component on the isostatic pressing mechanism 10 that can be limited and fixed on the inner cylinder 120 and can be extended and retracted relative to the corresponding filling component 300.

[0122] The limiting member 410 can be retracted into the corresponding filling member 300 so that the filling member 300 can be placed into the receiving cavity R. Then the limiting member 410 can be extended out of the corresponding filling member 300 and limited on the inner cylinder 120. In this way, the filling member 300 can be positioned on the inner cylinder 120.

[0123] In some embodiments, the inner cylinder 120 is provided with a limiting hole X communicating with the receiving cavity R. Along the axial direction of the receiving cavity R, a part of the limiting member 410 is telescopically inserted through the filling member 300, and another part of the limiting member 410 is inserted through the limiting hole X.

[0124] The limiting hole X refers to the hole on the inner cylinder 120 that is connected to the receiving cavity R and is used for the limiting member 410 to pass through.

[0125] It is possible that another part of the limiting member 410 is located inside the limiting hole X, or it is possible that another part of the limiting member 410 passes through the limiting hole X. No specific restrictions are made here.

[0126] Alternatively, each end 122 may be provided with a plurality of limiting holes X corresponding to a plurality of fillers 300.

[0127] The limiting member 410 can be retracted into the corresponding filling member 300 so that the filling member 300 can be placed into the receiving cavity R. Then the limiting member 410 can be extended out of the corresponding filling member 300 and pass through the limiting hole X. In this way, the limiting member 410 can be limited and fixed on the inner cylinder 120, and the filling member 300 can be positioned on the inner cylinder 120.

[0128] In some embodiments, the isostatic pressing mechanism 10 further includes an elastic member 420 corresponding to the limiting member 410. The elastic member 420 extends along the axial direction of the receiving cavity R, is compressed, and is located between the corresponding limiting member 410 and the corresponding filling member 300.

[0129] Alternatively, the limiting member 410 can be connected to the corresponding filling member 300 via the corresponding elastic member 420.

[0130] The elastic element 420 can be a spring.

[0131] The limiting member 410 can be retracted into the corresponding filling member 300 so that the filling member 300 can be placed into the receiving cavity R. During this process, the elastic member 420 is compressed. Then, the limiting member 410 can be extended out of the corresponding filling member 300 under the action of the elastic restoring force of the elastic member 420 and pass through the limiting hole X. In this way, the limiting member 410 can be limited and fixed on the inner cylinder 120, and the filling member 300 can be positioned on the inner cylinder 120.

[0132] Of course, this application is not limited to this. The limiting member 410 can also be positioned between the inner wall of the inner cylinder 120 and the corresponding filling member 300, and the filling member 300 can also be positioned on the inner cylinder 120.

[0133] In some embodiments, a stepped groove C is provided on at least one side of the filling member 300 along the axial direction of the receiving cavity R. The stepped groove C has a stepped surface C1 perpendicular to the axial direction of the receiving cavity R. A portion of the limiting member 410 is disposed in the stepped groove C and is located along the bottom wall of the stepped groove C toward the opening of the stepped groove C. The stepped surface C1 is located on one side of the limiting member 410.

[0134] In this way, the movement of the limiting member 410 can be restricted by the step surface C1, so that a part of the limiting member 410 can be retracted into the step groove C and limited between the groove opening of the step groove C and the step surface C1, thereby improving the reliability of the limiting member 410.

[0135] In some embodiments, such as Figure 7 As shown, the limiting member 410 includes a first limiting part 411 and a second limiting part 412 connected together. A portion of the first limiting part 411 is located within the stepped groove C, and another portion of the first limiting part 411 passes through the limiting hole X. The second limiting part 412 is disposed through the bottom wall of the stepped groove C. An elastic member 420 is sleeved on the second limiting part 412 and is located between the first limiting part 411 and the corresponding filler 300. Along the radial direction of the groove opening of the stepped groove C, the size of the first limiting part 411 is larger than the size of the second limiting part 412.

[0136] In this way, the elastic member 420 can be limited between the first limiting part 411 and the corresponding filling member 300, which makes it easier for the limiting member 410 to move better relative to the corresponding filling member 300 along the axial direction of the receiving cavity R. Since a part of the first limiting part 411 is located in the stepped groove C, and another part of the first limiting part 411 passes through the limiting hole X, the filling member 300 can be positioned on the inner cylinder 120.

[0137] In some embodiments, limiting members 410 are provided on opposite sides of the filling member 300 along the axial direction of the receiving cavity R.

[0138] First, the limiting members 410 on both sides can be retracted into the corresponding filling members 300 so that the filling members 300 can be placed into the receiving cavity R. Then, the limiting members 410 on both sides can be extended out of the corresponding filling members 300 and limited on the inner cylinder 120. In this way, the filling members 300 can be stably positioned on the inner cylinder 120.

[0139] In some embodiments, the isostatic pressing mechanism 10 includes a plurality of fillers 300, a plurality of limiting members 410 corresponding to the plurality of fillers 300, and a plurality of elastic members 420 corresponding to the plurality of limiting members 410.

[0140] Specifically, each filler 300 has a limiting member 410 and an elastic member 420 on its opposite sides.

[0141] This improves the positioning reliability of the filler 300.

[0142] In some embodiments, the inner cylinder 120 is provided with an observation window G3 that is connected to the receiving cavity R and the first opening K1 respectively.

[0143] The material 20 and pressurizing medium in the containment cavity R can be observed through the observation window G3, which makes it easier to understand the process of isostatic pressing mechanism 10 performing isostatic pressing on solid battery 21.

[0144] In other embodiments, such as Figure 8 and Figure 9 As shown, one end of the cavity R has a third opening K3 that communicates with the external environment.

[0145] Thus, material 20 and pressurizing medium can be placed into the receiving cavity R through the third opening K3, which facilitates isostatic pressing of the solid-state battery 21 using the pressurizing medium.

[0146] In other embodiments, the filler 300 is disposed against the inner wall of the receiving cavity R, and the filler 300 is fixed to the inner wall of the receiving cavity R.

[0147] The filler 300 can be fixed on the inner wall of the receiving cavity R. Since the filler 300 is set against the inner wall of the receiving cavity R, the volume of the space in the receiving cavity R used to contain the pressurized medium can be reduced, which helps to reduce the injection time of the pressurized medium and thus helps to improve the isostatic pressure processing efficiency of the isostatic pressure mechanism 10.

[0148] Since the filler 300 is fixed to the inner wall of the receiving cavity R, the entire assembly consisting of the mounting bracket 200 and the material 20 on the mounting bracket 200 can be placed into the space enclosed by the filler 300, which facilitates isostatic pressing of the solid-state battery 21 using the isostatic pressing mechanism 10.

[0149] In some embodiments, such as Figure 10As shown, the mounting bracket 200 includes at least two clamping members 210 spaced apart along a first direction F1, and a connector 220 for connecting the at least two clamping members 210. Along the first direction F1, all solid-state batteries 21 are confined between the at least two clamping members 210. At least one filler 300 includes two first filler members 310 that are opposite to and spaced apart along the first direction F1. A recessed groove B for partially accommodating the connector 220 is provided on the side of the first filler member 310 facing the other first filler member 310.

[0150] Clamping component 210 refers to the component on mounting bracket 200 used to clamp the solid-state battery 21.

[0151] Connector 220 refers to the component on mounting bracket 200 used to connect at least two clamps 210.

[0152] The connector 220 may include a bolt 221 and a nut 222, with the bolt 221 passing through all the clamps 210 and the nut 222 fastened to the end of the bolt 221 that extends out of all the clamps 210. The end of the nut 222 or the bolt 221 is located in the corresponding recessed groove B.

[0153] Material 20 may include a plurality of solid-state batteries 21, with a solid-state battery 21 disposed between two adjacent clamping members 210.

[0154] In this way, the mounting bracket 200 can be used to fix the material 20 well, which makes it easy for the whole formed by the mounting bracket 200 and the material 20 to be placed into the receiving cavity R. In addition, the first filling member 310 has a recessed groove B on the side facing the other first filling member 310 for partially accommodating the connector 220. The connector 220 can be used to connect at least two clamping members 210, thereby improving the stability of the material 20 in the mounting bracket 200. At the same time, the recessed groove B can be used to facilitate the partial storage of the connector 220.

[0155] In some embodiments, the isostatic pressing mechanism 10 further includes a third filler (not shown in the figure), which is disposed on one side of the solid-state battery 21 and located between two adjacent clamping members 210.

[0156] In this way, the space between two adjacent clamping members 210, excluding the solid-state battery 21, can be fully utilized, and the volume of the space in the receiving cavity R used to receive the pressurized medium can be further reduced, which is conducive to reducing the injection time of the pressurized medium and thus improving the isostatic pressure processing efficiency of the isostatic pressure mechanism 10.

[0157] In some embodiments, the volume of material 20 is V1, the volume of mounting bracket 200 is V2, the volume of all fillers 300 is V3, and the volume of receiving cavity R is V4. The volume units of V1, V2, V3 and V4 are the same, and V4﹣V1﹣V2=V5. The difference between V5 and V3 is less than or equal to a preset value.

[0158] Since the difference between V5 and V3 is less than or equal to the preset value, it can be understood that all fillers 300 almost completely fill the space in the receiving cavity R except for the material 20 and the mounting bracket 200. In this way, the volume of the space in the receiving cavity R used to contain the pressurized medium can be reduced, which is conducive to reducing the injection time of the pressurized medium and thus improving the isostatic pressure processing efficiency of the isostatic pressure mechanism 10.

[0159] In some embodiments, the isostatic pressing mechanism 10 includes a plurality of fillers 300, all of which are arranged around the mounting frame 200.

[0160] In this way, multiple fillers 300 can be used to better fill the space between the inner wall of the receiving cavity R and the mounting bracket 200, which is more conducive to improving the isostatic pressing efficiency of the isostatic pressing mechanism 10.

[0161] This application provides a battery production apparatus, including the isostatic pressing mechanism 10 of any of the above embodiments.

[0162] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0163] The embodiments described above are merely illustrative of several implementation methods of this application, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the patent application. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this application, and these all fall within the protection scope of this application. Therefore, the protection scope of this patent application should be determined by the appended claims.

Claims

1. An isostatic pressing mechanism (10), characterized in that, The isostatic pressing mechanism (10) is used to perform isostatic pressing on the material (20), the material (20) including a solid-state battery (21); the isostatic pressing mechanism (10) includes: The barrel (100) has a receiving cavity (R); A mounting bracket (200) is disposed within the receiving cavity (R) and is used to fix the material (20); and At least one filler (300) is disposed within the receiving cavity (R) and located between the inner wall of the receiving cavity (R) and the mounting bracket (200); wherein the receiving cavity (R) is in communication with the external environment.

2. The isostatic pressing mechanism (10) according to claim 1, characterized in that, The isostatic pressing mechanism (10) includes a plurality of fillers (300), all of which are arranged around the mounting frame (200).

3. The isostatic pressing mechanism (10) according to claim 2, characterized in that, The plurality of fillers (300) include two first fillers (310) that are opposite to each other and spaced apart along a first direction, and two second fillers (320) that are opposite to each other and spaced apart along a second direction; The first direction and the second direction intersect each other with the axial direction of the receiving cavity (R).

4. The isostatic pressing mechanism (10) according to claim 1, characterized in that, The filler (300) has a mating surface (301) and a limiting surface (302) that are disposed opposite to each other along the target direction; The mating surface (301) is adapted to the inner wall of the receiving cavity (R); The limiting surface (302) is positioned on one side of the mounting bracket (200) along the target direction; The target direction is perpendicular to the axial direction of the receiving cavity (R).

5. The isostatic pressing mechanism (10) according to claim 4, characterized in that, The inner wall of the receiving cavity (R) includes a cylindrical surface, and the mating surface (301) is constructed as an arc surface adapted to the cylindrical surface.

6. The isostatic pressing mechanism (10) according to claim 1, characterized in that, The filler (300) extends longitudinally along the axial direction of the receiving cavity (R).

7. The isostatic pressing mechanism (10) according to any one of claims 1-6, characterized in that, The barrel (100) includes: The outer cylinder (110) has a mounting cavity (Q), one end of which has a first opening (K1) communicating with the external environment; and An inner cylinder (120) is disposed within the mounting cavity (Q), and a receiving cavity (R) is formed within the inner cylinder (120); The inner cylinder (120) is provided with a first through hole (G1) that is connected to the receiving cavity (R) and the mounting cavity (Q) respectively.

8. The isostatic pressing mechanism (10) according to claim 7, characterized in that, The filler (300) is provided with a second through hole (G2) that communicates with the receiving cavity (R).

9. The isostatic pressing mechanism (10) according to claim 7, characterized in that, The inner cylinder (120) includes a cylindrical body (121) and two end portions (122). Along the axial direction of the receiving cavity (R), the two end portions (122) are connected to opposite sides of the cylindrical body (121). The cylindrical portion (121) and the two ends (122) enclose the receiving cavity (R); The first through hole (G1) is provided at least on the end (122); The cylindrical part (121) is provided with a second opening (K2) that communicates with the mounting cavity (Q) and the receiving cavity (R) respectively.

10. The isostatic pressing mechanism (10) according to claim 9, characterized in that, The first through hole (G1) is provided on the cylindrical part (121) and the end part (122).

11. The isostatic pressing mechanism (10) according to claim 7, characterized in that, The filler (300) is detachably connected to the inner cylinder (120).

12. The isostatic pressing mechanism (10) according to claim 11, characterized in that, The isostatic pressing mechanism (10) also includes a limiting member (410) corresponding to the filling member (300). Along the axial direction of the receiving cavity (R), the limiting member (410) is telescopically inserted into the corresponding filling member (300), and the limiting member (410) is positioned on the inner cylinder (120).

13. The isostatic pressing mechanism (10) according to claim 12, characterized in that, The inner cylinder (120) is provided with a limiting hole (X) that communicates with the receiving cavity (R); Along the axial direction of the receiving cavity (R), a portion of the limiting member (410) is telescopically inserted through the filler (300), and another portion of the limiting member (410) is inserted through the limiting hole (X).

14. The isostatic pressing mechanism (10) according to claim 12, characterized in that, The isostatic pressing mechanism (10) also includes an elastic element (420) corresponding to the limiting element (410). The elastic element (420) extends along the axial direction of the receiving cavity (R); The elastic element (420) is compressed and located between the corresponding limiting element (410) and the corresponding filling element (300).

15. The isostatic pressing mechanism (10) according to claim 12, characterized in that, Along the axial direction of the receiving cavity (R), at least one side of the filler (300) is provided with a stepped groove (C), the stepped groove (C) having a stepped surface (C1) perpendicular to the axial direction of the receiving cavity (R). A portion of the limiting member (410) is disposed within the stepped groove (C) and points along the bottom wall of the stepped groove (C) toward the opening of the stepped groove (C), and the stepped surface (C1) is limited to one side of the limiting member (410).

16. The isostatic pressing mechanism (10) according to claim 12, characterized in that, Along the axial direction of the receiving cavity (R), the limiting member (410) is provided on opposite sides of the filling member (300).

17. The isostatic pressing mechanism (10) according to claim 7, characterized in that, The inner cylinder (120) is provided with observation windows (G3) that are respectively connected to the receiving cavity (R) and the first opening (K1).

18. The isostatic pressing mechanism (10) according to any one of claims 1-6, characterized in that, One end of the receiving cavity (R) has a third opening (K3) that communicates with the external environment.

19. The isostatic pressing mechanism (10) according to claim 18, characterized in that, The filler (300) is disposed against the inner wall of the receiving cavity (R), and the filler (300) is fixed to the inner wall of the receiving cavity (R).

20. The isostatic pressing mechanism (10) according to any one of claims 1-6, characterized in that, The mounting bracket (200) includes at least two clamping members (210) spaced apart along a first direction, and a connector (220) for connecting at least two of the clamping members (210). Along the first direction, all of the solid-state batteries (21) are confined between the at least two of the clamps (210); The at least one filler (300) includes two first fillers (310) that are opposite to each other and spaced apart along the first direction; The first filler (310) has a recess (B) on the side facing the other first filler (310) for partially accommodating the connector (220).

21. The isostatic pressing mechanism (10) according to claim 20, characterized in that, The isostatic pressing mechanism (10) further includes a third filler, which is disposed on one side of the solid-state battery (21) and located between two adjacent clamping members (210).

22. The isostatic pressing mechanism (10) according to any one of claims 1-6, characterized in that, The volume of the material (20) is V1; The volume of the mounting bracket (200) is V2; The volume of all the fillers (300) is V3; The volume of the receiving cavity (R) is V4; wherein, V1, V2, V3 and V4 have the same volume unit, and V4﹣V1﹣V2=V5, and the difference between V5 and V3 is less than or equal to a preset value.

23. A battery production apparatus, characterized in that, Includes the isostatic pressing mechanism (10) as described in any one of claims 1-22.

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