Extrusion device, tray and battery production apparatus

Abstract

The application relates to an extrusion device, a tray and a battery production equipment. The extrusion device comprises a first part and a second part connected; the first part comprises a frame and a flexible bladder connected; the flexible bladder and the second part are connected with two opposite sides of the frame respectively and together define a bladder cavity; the frame has a first surface away from the second part; the flexible bladder comprises a bladder body and a protruding part protruding on one side of the bladder body; the bladder body is located on the side of the frame away from the second part and connected with the first surface; the protruding part extends to the inside or the inner side of the frame and is connected with the frame. The extrusion device can reduce the tearing angle between the bladder body and the first surface, thereby reducing the risk of the bladder body peeling off from the first surface, and further reducing the risk of the extrusion device failure.

Description

Technical Field

[0001] This application relates to the field of battery manufacturing technology, and in particular to an extrusion device, a tray, and battery production equipment. Background Technology

[0002] In some battery cell manufacturing processes, pressure needs to be applied to the battery cells. Related technologies offer an airbag structure as a compression device to compress the battery cells. This airbag structure includes a metal frame and flexible sealing films bonded to both sides of the metal frame. During use, as the airbag structure expands, the flexible sealing films are prone to tearing and separating from the metal frame, leading to failure. Utility Model Content

[0003] This application provides an extrusion device, a tray, and battery production equipment to improve the technical problem of extrusion devices being prone to failure.

[0004] To achieve the above objectives, according to a first aspect of this application, a compression device is provided, comprising a first component and a second component connected together; the first component includes a frame and a flexible bladder skin connected together, the flexible bladder skin and the second component being connected to opposite sides of the frame and jointly defining a bladder cavity; the frame has a first surface facing away from the second component; the flexible bladder skin includes a bladder skin body and a protrusion protruding from one side of the bladder skin body, the bladder skin body being located on the side of the frame facing away from the second component and connected to the first surface, the protrusion extending into or inside the frame and connected to the frame.

[0005] Optionally, the frame has a second surface corresponding to the cyst cavity; the protrusion includes a first protrusion that extends into the cyst cavity and connects to the second surface.

[0006] Optionally, the second surface is partially recessed and forms a third receiving groove on the frame, and a portion of the first protrusion is embedded in the third receiving groove.

[0007] Optionally, the first surface is partially recessed to form a second receiving groove on the frame, and the protrusion includes a second protrusion that extends into the second receiving groove and is connected to the frame.

[0008] Optionally, the first component further includes a reinforcing frame located within the cavity, the reinforcing frame having at least two independent connecting ends connected to the frame.

[0009] Optionally, the reinforcing frame includes a crossbeam extending along a first direction, with opposite ends of the crossbeam forming the connecting end and connecting to the second surface; the reinforcing frame also includes a longitudinal beam extending along a second direction, which intersects the first direction, with opposite ends of the longitudinal beam connecting to the crossbeam and the second surface, and one end of the longitudinal beam connecting to the second surface forming the connecting end.

[0010] Optionally, the connecting end is connected to the second surface, and the connecting end is recessed on one side of the skin body and together with the second surface defines a first receiving groove. In the case that the protrusion includes a first protrusion, a portion of the first protrusion extends into the first receiving groove and is connected to the reinforcing frame and the second surface.

[0011] Optionally, the thickness of the capsule body is 1mm to 5mm; and / or, the thickness of the protrusion is 1mm to 3mm; and / or, the frame is a metal structure; and / or, the flexible capsule is an elastic plastic structure; and / or, the capsule body is bonded to the first surface; and / or, the protrusion is bonded to the frame.

[0012] Optionally, the extrusion device further includes an adhesive layer disposed between the second component and the frame and bonding the second component to the frame.

[0013] Optionally, both the flexible skin and the adhesive layer comprise a vulcanized plastic structure.

[0014] Optionally, the second component has the same structure as the first component, and the second component is disposed opposite to the first component; and / or,

[0015] The compression device further includes a valve body disposed outside the bladder cavity. At least one of the first component and the second component has a fluid channel communicating with the bladder cavity. The valve body is connected to at least one of the first component and the second component and communicates with the fluid channel.

[0016] According to a second aspect of this application, a pallet is provided, comprising a pallet body and the above-described extrusion device or an extrusion device prepared by the above-described extrusion device preparation method, wherein the extrusion device is disposed on the pallet body.

[0017] According to a third aspect of this application, a battery production apparatus is provided, including the aforementioned tray.

[0018] The compression device provided in this application embodiment configures the flexible bladder to include a bladder body and a protrusion. The protrusion extends into or inside the frame and connects to the frame. Thus, when the pressure inside the bladder increases and the bladder body is subjected to a thrust in a direction away from the frame, the protrusion applies a pulling force to the bladder body in a direction closer to the frame. This pulling force can offset the thrust to a certain extent, reducing the tear angle between the bladder body and the first surface. This reduces the risk of the bladder body peeling off from the first surface, thereby reducing the risk of compression device failure.

[0019] Other features and advantages of this application will be described in detail in the following detailed description section. Attached Figure Description

[0020] To more clearly illustrate the technical solutions in the embodiments of this application, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0021] To gain a more complete understanding of this application and its beneficial effects, the following description will be provided in conjunction with the accompanying drawings, wherein the same reference numerals in the following description denote the same parts.

[0022] Figure 1 This is a three-dimensional structural schematic diagram of an extrusion device provided in an embodiment of this application;

[0023] Figure 2 This is a schematic front view of an extrusion device provided in an embodiment of this application;

[0024] Figure 3 This is a schematic internal cross-sectional view of an extrusion device provided in an embodiment of this application. Figure 1 ;

[0025] Figure 4 yes Figure 3 A magnified structural diagram of part A in the middle;

[0026] Figure 5 yes Figure 3 Schematic diagram of the cross-sectional structure along the HH direction;

[0027] Figure 6 yes Figure 5 A magnified structural diagram of part B in the middle section;

[0028] Figure 7 This is a side view of an extrusion device provided in an embodiment of this application;

[0029] Figure 8This is a schematic diagram of another side view of an extrusion device provided in an embodiment of this application;

[0030] Figure 9 This is a schematic internal cross-sectional view of an extrusion device provided in an embodiment of this application. Figure 2 ;

[0031] Figure 10 yes Figure 9 A magnified structural diagram of section C;

[0032] Figure 11 This corresponds to another extrusion device provided in the embodiments of this application. Figure 9 A magnified structural diagram of section C;

[0033] Figure 12 This is a three-dimensional structural diagram of the first component in an extrusion device provided in an embodiment of this application;

[0034] Figure 13 This is a schematic diagram of the main structure of the first mold provided in an embodiment of this application;

[0035] Figure 14 yes Figure 13 Schematic diagram of the cross-sectional structure along the GG direction;

[0036] Figure 15 The first component is located at Figure 13 A cross-sectional view of the structure inside the first mold.

[0037] Figure 16 This is a top view of the tray structure provided in the embodiments of this application;

[0038] Figure 17 This is a schematic diagram of the battery production equipment provided in the embodiments of this application.

[0039] Explanation of reference numerals in the attached figures:

[0040] 10. Extrusion device;

[0041] 1. First component;

[0042] 11. Frame; 110. Through hole; 111. First surface; 112. Second surface; 113. Second receiving groove; 114. Third surface; 115. Fourth surface; 116. Third receiving groove;

[0043] 12. Flexible capsule skin; 121. Capsule skin body; 122. Protrusion; 1221. First protrusion; 1222. Second protrusion;

[0044] 13. Reinforcing frame; 130. Connecting end; 131. Crossbeam; 132. Longitudinal beam; 133. First receiving slot;

[0045] 2. Second component;

[0046] 3. Cyst cavity;

[0047] 4. Adhesive layer;

[0048] 5. Valve body;

[0049] 6. Fluid channels;

[0050] 100. Pallet; 101. Pallet body;

[0051] 200. First mold; 210. Lower mold; 211. Mold body; 212. Boss; 213. Clearance groove; 220. Upper mold; 230. First cavity;

[0052] 1000. Battery production equipment. Detailed Implementation

[0053] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of them. All other embodiments obtained by those skilled in the art based on the embodiments of this application without creative effort are within the protection scope of this application.

[0054] Firstly, please see Figures 1 to 12 This application provides a compression device 10. The compression device 10 includes a first component 1 and a second component 2 connected together; the first component 1 includes a frame 11 and a flexible bladder 12 connected together, the flexible bladder 12 and the second component 2 are respectively connected to opposite sides of the frame 11 and jointly define a cavity 3; the frame 11 has a first surface 111 facing away from the second component 2; the flexible bladder 12 includes a bladder body 121 and a protrusion 122 protruding from one side of the bladder body 121, the bladder body 121 is located on the side of the frame 11 facing away from the second component 2 and is connected to the first surface 111, the protrusion 122 extends into the frame 11 or into the inner side of the frame 11 and is connected to the frame 11.

[0055] The extrusion device 10 provided in this application embodiment can be used to extrude battery cells. Here, the battery cell can be a lithium-ion battery, sodium-ion battery, sodium-lithium-ion battery, lithium metal battery, sodium metal battery, lithium-sulfur battery, magnesium-ion battery, nickel-metal hydride battery, nickel-cadmium battery, lead-acid battery, etc., and this application embodiment does not limit it.

[0056] Optionally, the extrusion device 10 can be applied to the production process of battery cells. The production process of battery cells generally includes steps such as stirring, coating, rolling, slitting, assembly, electrolyte injection, and formation. The extrusion device 10 can be applied to the formation process of battery cells. The formation of a battery cell refers to the first charge-discharge process of the battery cell after electrolyte injection. For example, in a lithium-ion battery cell, formation can activate the active materials in the cell, activating the lithium-ion battery. Simultaneously, lithium salts react with the electrolyte to form a solid electrolyte interphase (SEI) film at the negative electrode of the battery cell. This film can prevent further side reactions, thereby reducing the loss of active lithium in the battery cell. During the formation process, solvents and some additives in the electrolyte are reduced or decomposed, causing gas to be generated inside the battery cell. If the gas inside the battery cell cannot be expelled, it will trigger lithium plating inside the battery cell, deteriorating the cycle performance of the battery cell. Therefore, in the formation process, the extrusion device 10 is typically used to apply pressure to the battery cell, which can accelerate the expulsion of gas from the battery cell and improve the performance of the battery cell.

[0057] The extrusion device 10 can also be applied to other production processes of battery cells, such as the electrolyte injection process and the testing process. In the electrolyte injection process, the injection equipment injects electrolyte into the battery cell at high pressure and high speed, thereby increasing the internal pressure of the battery cell. The extrusion device 10 can apply pressure to the battery cell from the outside to counteract the internal pressure and reduce deformation. During the production process, battery cells need to be sampled and tested to evaluate their performance, such as testing their capacity or cycle performance. The extrusion device 10 can also be used to pressurize the battery cells during these tests.

[0058] When the extrusion device 10 is applied to the production process of battery cells, the extrusion device 10 can be specifically applied to battery production equipment, such as a formation machine or a capacity meter.

[0059] Of course, the extrusion device 10 provided in this application embodiment can also be used to apply pressure to other components to be pressurized during the battery cell production process. The following description uses the extrusion device 10 for extruding battery cells as an example.

[0060] Specifically, the extrusion device 10 includes a first component 1 and a second component 2. The first component 1 is connected to the second component 2. It can be understood that the first component 1 and the second component 2 are separate components, and then the first component 1 and the second component 2 are connected to assemble the extrusion device 10. This arrangement can reduce the manufacturing difficulty of the extrusion device 10. As an example, the first component 1 and the second component 2 can be bonded, welded, or snap-fitted together, which is not limited here.

[0061] Furthermore, the first component 1 is a component structure, comprising a frame 11 and a flexible skin 12. The frame 11 and the flexible skin 12 are connected; for example, they are bonded or welded together. The frame 11 refers to a structure with a border around its perimeter and a hollowed-out central area. The hollowed-out central area of ​​the frame 11 is a through hole 110. Typically, the frame 11 has a fixed shape. For example, the frame 11 is a rigid structure. The material of the frame 11 can be, but is not limited to, metal, plastic, inorganic non-metal, etc. The flexible skin 12 refers to a structure that makes it difficult for fluid media to pass through and has the ability to deform. That is, the flexible skin 12 can deform. For example, the flexible skin 12 can undergo elastic deformation. The material of the flexible skin 12 can be, but is not limited to, genuine leather, rubber, silicone, etc.

[0062] Specifically, the first component 1 and the second component 2 are connected such that the flexible skin 12 and the second component 2 are located on opposite sides of the frame 11, with the flexible skin 12 connected to one side of the frame 11 and the second component 2 connected to the other side of the frame 11. As an example, the frame 11 is obtained by hollowing out the central area of ​​a plate, and the central area of ​​the frame 11 is a through hole 110. In the thickness direction of the frame 11, the frame 11 has two opposite side surfaces, namely a first surface 111 and a third surface 114. The flexible skin 12 is connected to the first surface 111, and the second component 2 is connected to the third surface 114. The frame 11 also has a second surface 112, which corresponds to the through hole 110; that is, the second surface 112 is the wall surface of the through hole 110, and the second surface 112 is also the inner surface of the frame 11.

[0063] The flexible bladder 12, the second component 2, and the frame 11, when connected, collectively define the cavity 3. The cavity 3 is used to contain a fluid medium. Here, the fluid medium includes at least one of a liquid medium and a gaseous medium. As an example, the fluid medium can be a gaseous medium, such as air, and the compression device 10 is specifically an air bladder structure; the fluid medium can also be a liquid medium, such as water or oil, and the compression device 10 is specifically a liquid bladder structure. Since the flexible bladder 12 can deform, the compression device 10 can expand or contract by adjusting the volume of the fluid medium in the cavity 3. As an example, the compression device 10 can expand and increase in volume by filling the cavity 3 with a fluid medium, and shrink and decrease in volume by discharging the fluid medium from the cavity 3; or the compression device 10 can expand and increase in volume by heating the liquid medium in the cavity 3, and shrink and decrease in volume by cooling the gaseous medium in the cavity 3. When the volume of the extrusion device 10 increases, the extrusion device 10 can extrude the battery cell, that is, pressurize the battery cell; when the volume of the extrusion device 10 decreases, the extrusion device 10 can be separated from the battery cell, making it convenient to pick up and put down the battery cell.

[0064] When the extrusion device 10 is used to extrude the battery cell, the extrusion force of the extrusion device 10 on the battery cell can be adjusted by adjusting the volume of the fluid medium in the cavity 3. At the same time, since the flexible shell 12 can deform, when the extrusion device 10 pressurizes the battery cell, the flexible shell 12 can adapt to the size, surface shape, etc. of the battery cell, so that the flexible shell 12 can always keep the battery cell compressed during the pressurization process. In this way, on the one hand, the formation of extrusion dead zone can be reduced, and on the other hand, the application range of the extrusion device 10 can be expanded, so that the extrusion device 10 can be adapted to pressurize a variety of different battery cells.

[0065] As described above, the frame 11 has a first surface 111, which is opposite to the third surface 11, that is, the first surface 111 is also opposite to the second component 2.

[0066] More specifically, the flexible skin 12 includes a skin body 121 and a protrusion 122, wherein the protrusion 122 protrudes from one side of the skin body 121. As an example, the skin body 121 and the protrusion 122 are integrally formed, and the protrusion 122 protrudes from one side surface of the skin body 121. Of course, in other examples, the skin body 121 and the protrusion 122 can also be formed separately, and then the skin body 121 and the protrusion 122 can be bonded together.

[0067] The connection between the frame 11 and the flexible skin 12 is specifically such that the skin body 121 is disposed on the side of the frame 11 away from the second component 2, and the skin body 121 is connected to the first surface 111; the protrusion 122 extends into the frame 11 or the protrusion 122 extends into the inner side of the frame 11, and the protrusion 122 is connected to the frame 11.

[0068] It should be noted that, since the frame 11 has a through hole 110, when the capsule body 121 is disposed on the frame 11, the orthogonal projection area of ​​the capsule body 121 in the thickness direction is larger than the opening area of ​​the through hole 110. The capsule body 121 completely covers the through hole 110 to form the capsule cavity 3, that is, the through hole 110 is formed as part of the capsule cavity 3. In addition, a part of the capsule body 121 extends to the first surface 111 of the frame 11 and is connected to the first surface 111, for example, by bonding them together.

[0069] This refers to the protrusion 122 extending into the interior of the frame 11, which may be all or part of the protrusion 122 extending into the interior of the frame 11. Optionally, in the thickness direction of the frame 11, the orthographic projection of the portion of the protrusion 122 extending into the interior of the frame 11 overlaps with the orthographic projection of the frame 11, but is misaligned with the orthographic projection of the through hole 110 on the frame 11.

[0070] The extension of the protrusion 122 into the frame 11 means that the protrusion 122 extends into the inner side of the frame 11. This extension can be entirely or partially within the frame 11. Here, the inner side of the frame 11 refers to the side of the frame 11 facing the through hole 110; correspondingly, the outer side of the frame 11 refers to the side of the frame 11 away from the through hole 110. Specifically, the protrusion 122 extending into the inner side of the frame 11 means that the protrusion 122 extends into the through hole 110, that is, into the cyst cavity 3. Optionally, in the thickness direction of the frame 11, the orthographic projection of the portion of the protrusion 122 extending into the inner side of the frame 11 is misaligned with the orthographic projection of the frame 11, but overlaps with the orthographic projection of the through hole 110 on the frame 11.

[0071] It can be seen that whether the protrusion 122 extends into the frame 11 or extends towards the inner side of the frame 11, the protrusion 122 is spaced apart from the outer side of the frame 11. As an example, the outer surface of the frame 11 is the fourth surface 115, which is opposite to the second surface 112, and the protrusion 122 is spaced apart from the fourth surface 115.

[0072] During the research and development process, the inventors of this application discovered that when the flexible skin 12 does not include the protrusion 122, the pressure inside the cavity 3 increases, for example, when the battery cell and the squeezing device 10 squeeze each other, which easily leads to an increase in the pressure inside the cavity 3. The skin body 121 is easily peeled off from the first surface 111, that is, the flexible skin 12 and the frame 11 are torn, which leads to leakage of the fluid medium inside the cavity 3 and failure of the squeezing device 10.

[0073] Therefore, the compression device 10 provided in this application embodiment configures the flexible bladder 12 to include a bladder body 121 and a protrusion 122. The protrusion 122 extends into or to the inside of the frame 11 and connects to the frame 11. Thus, when the pressure inside the bladder cavity 3 increases, and the bladder body 121 is subjected to a pushing force in a direction away from the frame 11, the protrusion 122 applies a pulling force to the bladder body 121 in a direction closer to the frame 11. This pulling force can offset the pushing force to a certain extent, reducing the tear angle between the bladder body 121 and the first surface 111, thereby reducing the risk of the bladder body 121 peeling off from the first surface 111, and thus reducing the risk of the compression device 10 failing.

[0074] It should be noted that the tear angle between the skin body 121 and the first surface 111 refers to the angle between the skin body 121 and the first surface 111 when they separate. The larger the tear angle, the easier it is for the skin body 121 to separate from the first surface 111; the smaller the tear angle, the easier it is for the skin body 121 to remain connected to the first surface 111.

[0075] In this embodiment, the second component 2 can be a single piece or a component. As an example, the second component 2 can be a single piece, such as a metal plate, so that the resulting extrusion device 10 can deform on one side and achieve unilateral extrusion.

[0076] In some implementations, please refer to Figures 1 to 8 The second component 2 has the same structure as the first component 1, and the second component 2 is arranged opposite to the first component 1.

[0077] The second component 2 has the same structure as the first component 1, meaning that the second component 2 also includes a frame 11 and a flexible bladder 12. For ease of distinction, the frame 11 and flexible bladder 12 in the first component 1 are respectively the first frame and the first flexible bladder; the frame 11 and flexible bladder 12 in the second component 2 are respectively the second frame and the second flexible bladder. It should be noted that the fact that the second component 2 has the same structure as the first component 1 does not require that the first and second frames, as well as the first and second flexible bladders, be completely identical in terms of shape, size, material, thickness, or other details. In other words, the second component 2 and the first component 1 can be structurally identical, or there can be slight differences without affecting the overall structure. Optionally, the structure of the second component 2 can be completely identical to that of the first component 1. In this way, the extrusion device 10 is equivalent to two first components 1 assembled together, thus requiring only one set of molds to produce the first component 1, greatly reducing the production cost of the extrusion device 10.

[0078] The second component 2 is arranged opposite to the first component 1, specifically with the first frame and the second frame connected, the first flexible sac skin and the second flexible sac skin spaced apart, and the first frame and the second frame located between the first flexible sac skin and the second flexible sac skin.

[0079] In the above technical solution, the second component 2 is also a component structure, so the resulting extrusion device 10 can deform on both sides and achieve double-sided extrusion. When using the extrusion device 10 to pressurize the battery cell, the battery cell can be placed on both sides of the extrusion device 10, improving efficiency and saving space.

[0080] In some implementations, please refer to Figure 10 The frame 11 has a second surface 112 corresponding to the cyst cavity 3; the protrusion 122 includes a first protrusion 1221, which extends into the cyst cavity 3 and is connected to the second surface 112.

[0081] The protrusion 122 specifically includes a first protrusion 1221. The protrusion 122 extends inward toward the frame 11, specifically by the first protrusion 1221 extending into the cavity 3 inside the frame 11. The connection between the protrusion 122 and the frame 11 can be that the first protrusion 1221 is connected to the second surface 112 of the frame 11. The advantage of this arrangement is that when the pressure inside the cavity 3 increases, and the bladder body 121 is subjected to a thrust in a direction away from the frame 11, the first protrusion 1221 and the portion of the bladder body 121 connected to the first surface 111 can simultaneously apply a tensile force to the bladder body 121 in a direction closer to the frame 11. This effectively reduces the stress on the bladder body 121 as a whole, making the tear angle less than 90°, and the flexible bladder 12 will only tear when the bladder body 121 separates from the first surface 111 and the first protrusion 1221 also separates from the second surface 112.

[0082] Furthermore, the connection between the inner edge of the bladder body 121 and the first surface 111 is usually a weak point in the connection between the bladder body 121 and the first surface 111. This point is more likely to be torn due to repeated pulling of the bladder body 121. The first protrusion 1221 can improve the stability of the connection between the inner edge of the bladder body 121 and the first surface 111, reducing the probability of the connection being torn. On the other hand, the first protrusion 1221 can also cover the connection between the inner edge of the bladder body 121 and the first surface 111, reducing the risk that the fluid medium in the bladder cavity 3 will enter the connection interface between the bladder body 121 and the first surface 111 through this connection, thus reducing the risk of the connection strength between the bladder body 121 and the first surface 111 decreasing.

[0083] When the protrusion 122 includes the first protrusion 1221, the advantage of setting the first component 1 and the second component 2 as separate components is that the extrusion device 10 can be assembled by connecting the first protrusion 1221 to the second surface 112 of the frame 11 and then connecting the frame 11 to the second component 2, which greatly reduces the manufacturing difficulty of the extrusion device 10.

[0084] In some implementations, please refer to Figure 11 The first surface 111 is partially recessed and forms a second receiving groove 113 on the frame 11. The protrusion 122 includes a second protrusion 1222, which extends into the second receiving groove 113 and is connected to the frame 11.

[0085] The protrusion 122 specifically includes a second protrusion 1222. A second receiving groove 113 is formed on the frame 11, specifically formed by a partial recess of the first surface 111 into the interior of the frame 11. The protrusion 122 extends into the interior of the frame 11, specifically by the second protrusion 1222 extending into the second receiving groove 113. The connection between the protrusion 122 and the frame 11 can be that the second protrusion 1222 is connected to the inner wall of the second receiving groove 113 of the frame 11. It can be understood that the depth of the second receiving groove 113 is less than the thickness of the frame 11. The number of second receiving grooves 113 can be one or more, and correspondingly, the number of second protrusions 1222 can also be one or more. Optionally, the second receiving groove 113 is an annular groove surrounding the through hole 110. Optionally, in the depth direction of the second receiving groove 113, the cross-section of the second receiving groove 113 is square, semi-circular, or V-shaped.

[0086] When the pressure inside the bladder cavity 3 increases, the second protrusion 1222 can apply a tensile force to the bladder body 121 in a direction away from the frame 11 when the bladder body 121 is subjected to a pushing force, thereby reducing the risk of the flexible bladder body 12 being torn. Furthermore, since the second protrusion 1222 is connected to the inner wall of the second receiving groove 113, the area of ​​connection between the second protrusion 1222 and the frame 11 is doubled, meaning the strength of the connection between the second protrusion 1222 and the frame 11 is increased, thereby reducing the risk of the protrusion 122 separating from the frame 11, and further reducing the risk of the flexible bladder body 12 being torn.

[0087] In addition, when the protrusion 122 includes the second protrusion 1222, when assembling the extrusion device 10, it is possible to connect the second protrusion 1222 to the frame 11 and then connect the frame 11 to the second component 2, or to connect the frame 11 to the second component 2 first and then connect the second protrusion 1222 to the frame 11, thereby improving the flexibility of the extrusion device 10 assembly.

[0088] In some embodiments, the protrusion 122 may be configured to include only the first protrusion 1221, or only the second protrusion 1222, or both the first and second protrusions 1222. When the protrusion 122 includes both the first and second protrusions 1221, double protection is formed, further increasing the difficulty of peeling the skin body 121 from the first surface 111. Typically, after the first protrusion 1221 separates from the frame 11, the second protrusion 1222 can continue to provide tension to the skin body 121. Optionally, the first and second protrusions 1221 are spaced apart on one side surface of the skin body 121.

[0089] In some implementations, please refer to Figure 11 The second surface 112 is partially recessed and forms a third receiving groove 116 on the frame 11, and part of the first protrusion 1221 is embedded in the third receiving groove 116.

[0090] A third receiving groove 116 is formed on the frame 11, specifically formed by a partial recess of the second surface 112 into the frame 11. A portion of the first protrusion 1221 is embedded in the third receiving groove 116, thereby providing an anchoring effect and reducing the risk of separation between the first protrusion 1221 and the second surface 112. The number of third receiving grooves 116 can be one or more. Optionally, in the depth direction of the third receiving groove 116, the cross-section of the third receiving groove 116 is square, semi-circular, or V-shaped.

[0091] In some implementations, please refer to Figure 5 and Figure 12 The first component 1 also includes a reinforcing frame 13, which is located inside the cavity 3. The reinforcing frame 13 has at least two independent connecting ends 130, which are connected to the frame 11.

[0092] The first component 1 further includes a reinforcing frame 13, which is connected to the frame 11. As an example, the reinforcing frame 13 is welded to or integrally formed with the frame 11. Specifically, the reinforcing frame 13 has at least two connecting ends 130, such as three, six, ten, or more. The reinforcing frame 13 is connected to the frame 11 via the connecting ends 130. The different connecting ends 130 are independent of each other, so that each connecting end 130 is connected to a different part of the frame 11.

[0093] During the expansion process of the extrusion device 10, the frame 11 is prone to deformation, specifically, the frame 11 expands outward. This deformation affects the stability of the connection between the flexible bladder 12 and the frame 11, increasing the risk of separation and potentially causing the extrusion device 10 to fail. The reinforcing frame 13, however, enhances the frame 11's resistance to deformation. This is because different connection ends 130 of the reinforcing frame 13 connect to different parts of the frame 11. Thus, when the frame 11 expands outward under stress, the reinforcing frame 13 pulls the frame 11 inward. In other words, the presence of the reinforcing frame 13 limits the outward expansion of the frame 11, reducing the risk of deformation and consequently lowering the risk of extrusion device 10 failure.

[0094] The reinforcing frame 13 is located within the cavity 3. The support structure of the reinforcing frame 13 reduces the impact on the flow of fluid within the cavity 3, and when the compression device 10 expands, the reinforcing frame 13 can better avoid compressing the battery cells. As examples, the reinforcing frame 13 can be in the shape of a straight line, a cross, a star, or a pyramid. Optionally, the flexible outer shell 12 and the reinforcing frame 13 are not connected. This arrangement facilitates the deformation of the flexible outer shell 12 and improves the buffering effect when the compression device 10 compresses the battery cells. Of course, in some embodiments, the flexible outer shell 12 and the reinforcing frame 13 can also be connected.

[0095] The reinforcing frame 13 can be made of, but is not limited to, metal, plastic, inorganic non-metal, etc. The material of the reinforcing frame 13 can be the same as or different from the material of the frame 1. Optionally, the material of the reinforcing frame 13 can be the same as the material of the frame 1 for ease of fabrication.

[0096] In some implementations, please refer to Figure 3 and Figure 12 The reinforcing frame 13 includes a crossbeam 131 extending along a first direction, with its opposite ends forming connecting ends 130 and connecting to a second surface 112. With this configuration, the crossbeam 131 can restrict the outward deformation of the frame 11 in the first direction. As an example, the frame 11 is rectangular, and the first direction is the length direction of the frame 11. The number of crossbeams 131 can be one or more.

[0097] In some implementations, please refer to Figure 3 and Figure 12 The reinforcing frame 13 also includes a longitudinal beam 132 extending along a second direction, which intersects with the first direction. The opposite ends of the longitudinal beam 132 are connected to the crossbeam 131 and the second surface 112, respectively. The end of the longitudinal beam 132 connected to the second surface 112 forms a connecting end 130. In other words, the reinforcing frame 13 also includes a longitudinal beam 132, which intersects with and connects to the crossbeam 131. Specifically, the longitudinal beam 132 has opposite ends; one end of the longitudinal beam 132 is connected to the crossbeam 131, and the other end of the crossbeam 131 is connected to the second surface 112. In this case, the other end of the crossbeam 131 is the connecting end 130. It can be seen that the longitudinal beam 132 can restrict the outward deformation of the frame 11 in the second direction. Since the second direction intersects with the first direction, the reinforcing frame 13 can thus restrict the outward deformation of the frame 11 in multiple different directions, further reducing the risk of failure of the compression device 10. Optionally, the second direction is perpendicular to the first direction. The number of longitudinal beams 132 can be one or more. When there are multiple longitudinal beams 132, they are spaced apart from each other.

[0098] In some implementations, please refer to Figure 6The connecting end 130 is connected to the second surface 112. The side surface of the connecting end 130 facing the bladder body 121 is recessed and together with the second surface 112 defines the first receiving groove 133. When the protrusion 122 includes the first protrusion 1221, a portion of the first protrusion 1221 extends into the first receiving groove 133 and is connected to the reinforcing frame 13 and the second surface 112.

[0099] The connection between the reinforcing frame 13 and the frame 11 is specifically that the connecting end 130 is connected to the second surface 112. The reinforcing frame 13 and the frame 11 together define the first receiving groove 133. More specifically, the connecting end 130 is recessed on one side surface facing the skin body 121, and together with the second surface 112, defines the first receiving groove 133. It can be understood that the bottom wall of the first receiving groove 133 is the connecting end 130, and one side wall surface of the first receiving groove 133 is the second surface 112. A portion of the first protrusion 1221 extends into the first receiving groove 133 and is connected to the reinforcing frame 13 and the frame 11. Optionally, in the depth direction of the first receiving groove 133, the cross-section of the first receiving groove 133 is square, semi-circular, or V-shaped.

[0100] By using the above technical solution, the first protrusion 1221 is accommodated by the groove of the reinforcing frame 13, and the first protrusion 1221 is rooted on the reinforcing frame 13, which can reduce the tear angle at the connection between the flexible skin 12 and the reinforcing frame 13 and improve the connection strength between the flexible skin 12 and the reinforcing frame 13.

[0101] In some embodiments, the thickness of the bladder body 121 is 1mm to 5mm, for example, it can be 1mm, 1.5mm, 2mm, 2.5mm, 3mm, 3.5mm, 4mm, 4.5mm, or 5mm. This configuration allows the bladder body 121 to have good mechanical strength and is less prone to tearing under stress.

[0102] In some embodiments, the thickness of the protrusion 122 is 1mm to 3mm, for example, it can be 1mm, 1.5mm, 2mm, 2.5mm or 3mm. It should be noted that when the protrusion 122 includes a first protrusion 1221, the thickness of the first protrusion 1221 is 1mm to 3mm; when the protrusion 122 includes a second protrusion 1222, the thickness of the second protrusion 1222 is 1mm to 3mm; when the protrusion 122 includes a first protrusion 1221 and a second protrusion 1222, the thickness of the first protrusion 1221 and the thickness of the second protrusion 1222 are each independently 1mm to 3mm.

[0103] In some embodiments, the frame 11 is a metal structure. This configuration can increase the mechanical strength of the frame 11 and reduce the risk of deformation. As an example, the frame 11 is a steel or aluminum structure.

[0104] In some embodiments, the flexible casing 12 is an elastic plastic structure. A plastic structure refers to a structural component made of a polymeric plastic material (such as rubber, silicone, etc.). An elastic plastic structure refers to a plastic structure with elastic deformation capability. The elastic deformation capability of the elastic plastic structure can further enhance the expansion effect of the extrusion device 10 and also reduce the risk of tearing. As an example, the elastic plastic structure is a rubber structure or a silicone structure. Optionally, the rubber structure includes at least one of EPDM rubber, fluororubber, and thermoplastic polyurethane rubber (TPU). As an example, the rubber structure includes fluororubber, which has good resistance to electrolyte corrosion, thus reducing the risk of corrosion of the flexible casing 12 on the extrusion device 10 in the event of electrolyte leakage from the battery cell. Optionally, the rubber structure includes thermoplastic polyurethane rubber, and the flexible casing 12 can be welded to the frame 11 by ultrasonic welding.

[0105] In some embodiments, the connection between the shell body 121 and the first surface 111 is specifically adhesive. The shell body 121 may be directly adhesive to the first surface 111; for example, the shell body 121 may include a vulcanized plastic structure, and the shell body 121 may be adhesive to the first surface 111 of the frame 11 during the vulcanization process of forming the vulcanized plastic structure. Alternatively, the shell body 121 may be adhesive to the first surface 111 of the frame 11 using an adhesive (e.g., glue).

[0106] In some embodiments, the protrusion 122 is bonded to the frame 11. The protrusion 122 may be directly bonded to the frame 11; for example, the protrusion 122 may include a vulcanized plastic structure, and the protrusion 122 may be bonded to the frame 11 during the vulcanization process of the vulcanized plastic structure. Alternatively, the protrusion 122 may be bonded to the frame 11 using an adhesive. The protrusion 122 includes a first protrusion 1221, which is bonded to the frame 11, and more specifically, the first protrusion 1221 is bonded to the second surface 112. The protrusion 122 also includes a second protrusion 1222, which is bonded to the frame 11, and more specifically, the second protrusion 1222 is connected to the inner surface of the groove wall of the second receiving groove 113.

[0107] In some implementations, please refer to Figure 10 and Figure 11 The extrusion device 10 also includes an adhesive layer 4, which is disposed between the second component 2 and the frame 11 and bonds the second component 2 and the frame 11 together. That is, the second component 2 and the first component 1 are bonded together by the adhesive layer 4, which is a simple and reliable arrangement.

[0108] In some embodiments, both the flexible skin 12 and the adhesive layer 4 include a vulcanized plastic structure. The flexible skin 12 may be wholly or partially a vulcanized plastic structure. The adhesive layer 4 may be wholly or partially a vulcanized plastic structure. The vulcanized plastic structure has the characteristic of high adhesive strength, thereby improving the connection strength between the flexible skin 12 and the frame 11, as well as the connection strength between the second component 2 and the first component 1, reducing the risk of failure of the extrusion device 10. Optionally, the flexible skin 12 is a vulcanized plastic structure obtained by vulcanizing raw rubber material. Compared with a vulcanized plastic structure obtained by vulcanizing semi-cured rubber material, this vulcanized plastic structure obtained by vulcanizing raw rubber material has better adhesive performance, thus reducing the risk of the flexible skin 12 being torn. Optionally, the adhesive layer 4 is a vulcanized plastic structure obtained by vulcanizing raw rubber material.

[0109] In some implementations, please refer to Figure 3 and Figure 8 The squeezing device 10 also includes a valve body 5 disposed outside the bladder cavity 3. At least one of the first component 1 and the second component 2 has a fluid channel 6 communicating with the bladder cavity 3. The valve body 5 is connected to at least one of the first component 1 and the second component 2 and communicates with the fluid channel 6. Optionally, the valve body 5 is a switch with two states: closed and open. When it is necessary to introduce fluid medium into the bladder cavity 3, the valve body 5 is opened, and the fluid medium flows into the bladder cavity 3 sequentially through the valve body 5 and the fluid channel 6, thereby causing the squeezing device 10 to expand in volume. After completion, the valve body 5 is closed. When it is necessary to discharge the fluid medium from the bladder cavity 3, the valve body 5 is opened, and the fluid medium in the bladder cavity 3 flows out of the bladder cavity 3 sequentially through the fluid channel 6 and the valve body 5, and the squeezing device 10 shrinks in volume. Optionally, the valve body 5 is a one-way valve, that is, the valve body 5 is one-way, and the fluid medium can only flow into the bladder cavity 3 through the valve body 5 and the fluid channel 6, but the fluid medium cannot flow out of the bladder cavity 3 through the valve body 5.

[0110] As an example, the fluid channel 6 is a first through hole opened on the first component 1, and the valve body 5 is also provided on the first component 1. The first through hole connects the valve body 5 and the bladder 3.

[0111] As an example, the fluid channel 6 is a second through hole opened on the second component 2, and the valve body 5 is also provided on the second component 2. The second through hole connects the valve body 5 and the bladder 3.

[0112] As an example, the fluid channel 6 is a third through hole that simultaneously penetrates the first component 1 and the second component 2. The third through hole is formed by combining the semi-circular groove on the first component 1 and the semi-circular groove on the second component 2. The valve body 5 is also connected to the first component 1 and the second component 2 at the same time. The third through hole connects the valve body 5 and the bladder 3.

[0113] Secondly, embodiments of this application provide a method for preparing an extrusion device 10, comprising:

[0114] S1. Provide a frame 11, wherein one surface of the frame 11 in the thickness direction is a first surface 111;

[0115] S2. A flexible skin 12 is prepared on one side of the frame 11 to obtain the first component 1; wherein, the flexible skin 12 includes a skin body 121 and a protrusion 122 protruding on one side of the skin body 121. The skin body 121 is located on one side of the frame 11 and connected to the first surface 111. The protrusion 122 extends into the frame 11 or into the inner side of the frame 11 and is connected to the frame 11.

[0116] S3. Provide a second component 2, which is disposed on the side of the frame 11 away from the flexible bladder skin 12 and connected to the frame 11. The second component 2, together with the frame 11 and the flexible bladder skin 12, defines the bladder cavity 3, thereby obtaining the compression device 10.

[0117] It should be noted that in step S2, the flexible capsule 12 can be prepared first, and then the flexible capsule 12 can be set together with the frame 11, or the flexible capsule 12 can be formed directly on the frame 11.

[0118] The compression device 10 prepared by the method provided in this application increases the pressure in the cavity 3. When the bladder body 121 is subjected to a pushing force in the direction away from the frame 11, the protrusion 122 will apply a pulling force to the bladder body 121 in the direction closer to the frame 11. This pulling force can offset the pushing force to a certain extent, reduce the tearing angle between the bladder body 121 and the first surface 111, thereby reducing the risk of the bladder body 121 peeling off from the first surface 111, and thus reducing the risk of the compression device 10 failing.

[0119] In some embodiments, in step S2, the preparation process of the first component 1 includes: placing a first raw rubber part on the frame 11, performing vulcanization on the first raw rubber part to obtain a flexible skin 12, and bonding the flexible skin 12 to the frame 11 to obtain the first component 1. That is, the flexible skin 12 is obtained by vulcanizing the first raw rubber part on the frame 11. The first raw rubber part contains raw rubber. Raw rubber refers to sulfur-free plastic, which, after vulcanization, forms cured plastic, i.e., vulcanized plastic. The flexible skin 12 contains vulcanized plastic, which has good adhesive properties, thus effectively bonding it to the frame 11 during the molding process of the flexible skin 12.

[0120] In some implementations, please refer to Figures 12 to 14 The process of obtaining the flexible skin 12 after the first raw rubber component is vulcanized on the frame 11 includes:

[0121] A first mold 200 is provided, which includes a lower mold 210 and an upper mold 220. The lower mold 210 includes a mold body 211 and a boss 212. The boss 212 protrudes from one side surface of the mold body 211. The upper mold 220 is upside down disposed on the mold body 211. The upper mold 220 and the mold body 211 define a first cavity 230. The boss 212 extends into the first cavity 230.

[0122] A vulcanizing agent is coated on the first surface 111 and the second surface 112 of the frame 11, wherein the second surface 112 is the inner surface of the frame 11;

[0123] The frame 11 is placed in the first cavity 230 of the first mold 200 and the boss 202 extends into the inner side of the frame 11. The boss 202 is spaced apart from the second surface 112 of the frame 11 and forms a gap between them.

[0124] A first raw rubber component is provided and laid on the top surface of the first surface 111 and the boss 202;

[0125] The first raw rubber part is heated and pressurized using the lower mold 210 and the upper mold 220, causing at least a portion of the first raw rubber part to melt and penetrate into the gap. The first raw rubber part undergoes a vulcanization reaction with the vulcanizing agent to form vulcanized plastic, resulting in a flexible bladder 12. The flexible bladder 12 is bonded to the frame 11 to obtain the first component 1.

[0126] As an example, a vulcanizing agent is at least one of sulfur and organic sulfides.

[0127] The heating and pressurizing process of the first raw rubber part using the lower mold 210 and the upper mold 220 specifically involves heating and extruding the first raw rubber part using the lower mold 210 and the upper mold 220.

[0128] Optionally, the frame 11 is further provided with a reinforcing frame 13, and the boss 212 is further recessed with a relief groove 213 for accommodating the reinforcing frame 13. During the vulcanization process, the reinforcing frame 13 is accommodated in the relief groove 213.

[0129] In some embodiments, before preparing the flexible skin 12 on the frame 11, the surface of the frame 11 is sandblasted, especially the first surface 111 and the second surface 112, to improve the bonding effect between the flexible skin 12 and the frame 11, especially when the flexible skin 12 is obtained by vulcanizing the first raw rubber part on the frame 11.

[0130] In some embodiments, the second component 2 and the first component 1 are connected by an adhesive layer 4, meaning the resulting extrusion device 10 also includes an adhesive layer 4. As an example, the adhesive layer 4 may be a glue-cured adhesive, etc.

[0131] In some embodiments, placing the second component 2 on the side of the frame 11 opposite to the flexible skin 12 and connecting it to the frame 11 includes: placing a second raw rubber component between the second component 2 and the frame 11, and vulcanizing the second raw rubber component to obtain an adhesive layer 4, which bonds the second component 2 to the frame 11. That is, the adhesive layer 4 is obtained by vulcanizing the second raw rubber component. The second raw rubber component contains raw rubber. The adhesive layer 4 contains vulcanized plastic, which has good adhesive properties, thus effectively bonding the second component 2 and the first component 1 together during the molding process of the adhesive layer 4.

[0132] In some embodiments, the process of vulcanizing the second raw rubber part to obtain the adhesive layer 4 includes:

[0133] A second mold (not shown) is provided, the second mold including a front mold and a rear mold, the front mold and the rear mold being snapped together and defining a second cavity;

[0134] A vulcanizing agent is applied to both the bonding surfaces of the first component 1 and the second component 2.

[0135] The first component 1, the second raw rubber component, and the second component 2 are stacked together and placed into the second cavity of the second mold.

[0136] The second raw rubber part is heated and pressurized using a front mold and a rear mold, causing at least a portion of the second raw rubber part to undergo a vulcanization reaction with the vulcanizing agent and form vulcanized plastic, resulting in an adhesive layer 4. The adhesive layer 4 bonds the first component 1 and the second component 2 together, thereby obtaining the extrusion device 10.

[0137] In some embodiments, before applying a vulcanizing agent to the bonding surfaces of the first component 1 and the second component 2, the bonding surfaces of the first component 1 and the second component 2 are first sandblasted to improve the bonding effect between the first component 1 and the second component 2 and the adhesive layer 44.

[0138] In some embodiments, the above-described method for preparing the extrusion device 10 is used to prepare the extrusion device 10 provided in the first aspect of the present application.

[0139] Thirdly, please see Figure 16 This application provides a tray 100, which includes a tray body 101 and the above-mentioned extrusion device 10 or an extrusion device 10 prepared by the above-mentioned extrusion device 10 preparation method, and the extrusion device 10 is disposed on the tray body 101.

[0140] The tray 100 includes the aforementioned extrusion device 10, and therefore the tray 100 has all the beneficial effects of the aforementioned extrusion device 10, which will not be repeated here in the embodiments of this application.

[0141] The tray 100 is used to load individual battery cells. Specifically, the individual battery cells and the compression device 10 are supported together on the tray body 101, and the compression device 10 is used to compress the individual battery cells. Optionally, there are multiple compression devices 10 and multiple individual battery cells. The individual battery cells and the compression devices 10 are alternately arranged on the tray body 101, and a single individual battery cell is kept between two compression devices 10. The compression device 10 can compress the individual battery cells, that is, apply pressure.

[0142] Fourthly, please refer to Figure 17 This application provides a battery production equipment 1000, which includes the aforementioned tray 100.

[0143] The battery production equipment includes the aforementioned tray 100, and therefore the battery production equipment 1000 has all the beneficial effects of the aforementioned tray 100, which will not be repeated here in the embodiments of this application.

[0144] In some embodiments, the battery production equipment 1000 is an arrangement for producing battery cells. As an example, the battery production equipment 1000 includes at least one of a liquid injection machine, a formation machine, and a capacity testing machine.

[0145] In the description of this application, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include one or more features. In the description of this application, "multiple" means two or more, unless otherwise explicitly specified.

[0146] In the above embodiments, the descriptions of each embodiment have different focuses. For parts not described in detail in a certain embodiment, please refer to the relevant descriptions in other embodiments.

[0147] The embodiments, implementation methods, and related technical features of this application can be combined and substituted for each other without conflict.

[0148] The above are merely preferred embodiments of this application and are not intended to limit this application in any way. Any simple modifications, equivalent changes, and alterations made to the above embodiments based on the technical essence of this application without departing from the scope of the technical solution of this application shall still fall within the scope of the technical solution of this application.

Claims

1. An extrusion device (10), characterized in that, The device includes a first component (1) and a second component (2) that are connected together. The first component (1) includes a frame (11) and a flexible sac (12) that are connected together. The flexible sac (12) and the second component (2) are respectively connected to opposite sides of the frame (11) and together define a cavity (3). The frame (11) has a first surface (111) that is away from the second component (2). The flexible sac (12) includes a sac body (121) and a protrusion (122) that protrudes from one side of the sac body (121). The sac body (121) is located on the side of the frame (11) away from the second component (2) and is connected to the first surface (111). The protrusion (122) extends into the frame (11) or into the inner side of the frame (11) and is connected to the frame (11).

2. The extrusion device (10) according to claim 1, characterized in that, The frame (11) has a second surface (112) corresponding to the cyst cavity (3); the protrusion (122) includes a first protrusion (1221) which extends into the cyst cavity (3) and is connected to the second surface (112).

3. The extrusion device (10) according to claim 2, characterized in that, The second surface (112) is partially recessed and forms a third receiving groove (116) on the frame (11), and a portion of the first protrusion (1221) is embedded in the third receiving groove (116).

4. The extrusion device (10) according to any one of claims 1 to 3, characterized in that, The first surface (111) is partially recessed and forms a second receiving groove (113) on the frame (11). The protrusion (122) includes a second protrusion (1222), which extends into the second receiving groove (113) and is connected to the frame (11).

5. The extrusion device (10) according to any one of claims 2 to 3, characterized in that, The first component (1) further includes a reinforcing frame (13) located inside the cavity (3), the reinforcing frame (13) having at least two independent connecting ends (130) connected to the frame (11).

6. The extrusion device (10) according to claim 5, characterized in that, The reinforcing frame (13) includes a crossbeam (131) extending along a first direction, with the opposite ends of the crossbeam (131) forming the connecting end (130) and connecting to the second surface (112); the reinforcing frame (13) also includes a longitudinal beam (132) extending along a second direction, which intersects with the first direction, with the opposite ends of the longitudinal beam (132) connecting to the crossbeam (131) and the second surface (112) respectively, and the end of the longitudinal beam (132) connected to the second surface (112) forming the connecting end (130).

7. The extrusion device (10) according to claim 5, characterized in that, The connecting end (130) is connected to the second surface (112). The connecting end (130) is recessed on one side of the skin body (121) and together with the second surface (112) defines a first receiving groove (133). When the protrusion (122) includes a first protrusion (1221), a portion of the first protrusion (1221) extends into the first receiving groove (133) and is connected to the reinforcing frame (13) and the second surface (112).

8. The extrusion device (10) according to any one of claims 1 to 3, characterized in that, The thickness of the capsule body (121) is 1mm to 5mm; and / or the thickness of the protrusion (122) is 1mm to 3mm; and / or the frame (11) is a metal structure; and / or the flexible capsule (12) is an elastic plastic structure; and / or the capsule body (121) is bonded to the first surface (111); and / or the protrusion (122) is bonded to the frame (11).

9. The extrusion device (10) according to any one of claims 1 to 3, characterized in that, The extrusion device (10) further includes an adhesive layer (4), which is disposed between the second component (2) and the frame (11) and bonds the second component (2) and the frame (11) together.

10. The extrusion device (10) according to claim 9, characterized in that, Both the flexible skin (12) and the adhesive layer (4) include a vulcanized plastic structure.

11. The extrusion device (10) according to any one of claims 1 to 3, characterized in that, The second component (2) has the same construction as the first component (1), and the second component (2) is disposed opposite to the first component (1); and / or, The squeezing device (10) further includes a valve body (5) disposed outside the bladder cavity (3). At least one of the first component (1) and the second component (2) has a fluid channel (6) communicating with the bladder cavity (3). The valve body (5) is connected to at least one of the first component (1) and the second component (2) and communicates with the fluid channel (6).

12. A tray (100), characterized in that, It includes a tray body (101) and a pressing device (10) as described in any one of claims 1 to 11, the pressing device (10) being disposed on the tray body (101).

13. A battery manufacturing apparatus (1000), characterized in that, Includes the tray (100) as described in claim 12.

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