Solid-state battery clamp, solid-state battery and battery manufacturing equipment

Abstract

The utility model discloses a solid-state battery clamp, a solid-state battery and battery manufacturing equipment, and the solid-state battery clamp is used in the process of carrying out temperature isostatic pressing on the solid-state battery. The solid-state battery clamp comprises a shell and a clamping assembly, the shell is provided with a containing cavity and comprises a bottom wall. The clamping assembly is used for clamping the edge of the solid-state battery, and the clamping assembly is arranged in the containing cavity and slidably connected with the bottom wall. Wherein in the warm isostatic pressing process, when hydraulic oil applies hydrostatic pressure to the packaging film of the solid-state battery and causes the edge of the packaging film to contract towards the center of the solid-state battery, the clamping assembly is configured to be capable of responding to the contraction of the packaging film to slide inwards relative to the bottom wall so as to follow the movement of the edge. According to the technical scheme, dynamic deformation of the clamped workpiece in the machining process can be self-adapted, and the risk that a packaging film of the solid-state battery is damaged is reduced.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of batteries, in particular to a solid-state battery clamp, a solid-state battery and a battery manufacturing device. BACKGROUND

[0002] A solid-state battery refers to a battery that uses a solid-state electrolyte to replace the liquid electrolyte in a lithium-ion battery. The solid-state battery exhibits certain advantages in terms of energy density, safety and cycle life.

[0003] In the production process of a solid-state battery, the packaging film often cracks and deforms, and therefore the above problems need to be improved. CONTENT OF THE UTILITY MODEL

[0004] In view of the above problems, the present application provides a solid-state battery clamp, a solid-state battery and a battery manufacturing device, which can adapt to the dynamic deformation of the clamped workpiece during the machining process.

[0005] In a first aspect, the present application provides a solid-state battery clamp for use in the warm isostatic pressing process of a solid-state battery. The solid-state battery clamp comprises a shell and a clamping assembly. The shell has a receiving cavity, and the shell comprises a bottom wall. The clamping assembly is used to clamp the edge of the solid-state battery, and the clamping assembly is arranged in the receiving cavity and is slidably connected with the bottom wall. During the warm isostatic pressing process, when the hydraulic oil exerts hydrostatic pressure on the packaging film of the solid-state battery and causes the edge of the packaging film to shrink towards the center of the solid-state battery, the clamping assembly is configured to slide inward relative to the bottom wall in response to the shrinkage of the packaging film, so as to follow the movement of the edge.

[0006] In the technical scheme of the present application, the shell is arranged to accommodate the clamping assembly and the solid-state battery during the warm isostatic pressing process of the solid-state battery. The shell comprises a bottom wall for supporting the clamping assembly and the solid-state battery. The clamping assembly is arranged in the receiving cavity and clamps the solid-state battery, so that the solid-state battery can maintain a relatively fixed position when subjected to all-around hydraulic pressure by the hydraulic oil, thereby reducing the risk of damage caused by movement of the solid-state battery. The clamping assembly can slide relative to the bottom wall, and the solid-state battery shrinks under pressure during the warm isostatic pressing process, and the clamping assembly also moves as the solid-state battery shrinks and deforms. The above structure changes the clamping of the solid-state battery from rigid positioning to dynamic cooperation, allowing the workpiece solid-state battery to deform within the expected range during the warm isostatic pressing, thereby reducing damage to the packaging film caused by pulling and reducing the risk of rupture of the tab of the solid-state battery caused by pulling. By ensuring uniform transmission of pressure and integrity of the battery structure during the warm isostatic pressing process, the compaction degree and bonding state of the materials inside the solid-state battery are more ideal, thereby improving the key indicators such as energy density, charge and discharge performance of the battery and improving the overall quality of the product.

[0007] In some embodiments, the clamping assembly includes four clamping units corresponding to four side edges of the solid-state battery, respectively, for clamping the edges of the packaging film of the solid-state battery. At least two of the four clamping units are slidably connected to the bottom wall and can move in a direction towards the center of the solid-state battery in response to the shrinkage of the packaging film. Two of the slidable clamping units correspond to two adjacent edges of the solid-state battery, respectively. In the above structure, the four clamping units are arranged to match the structure and shape of the solid-state battery, which can improve the clamping force and stability of the solid-state battery. The arrangement of multiple clamping units can move simultaneously according to the deformation of the four edges of the solid-state battery, further reducing the risk of damage to the solid-state battery during the isostatic pressing process.

[0008] In some embodiments, the four clamping units are slidably connected to the bottom wall. In the above structure, the four clamping units can slide relative to the bottom wall, which can respond more quickly to the shrinkage of the edges of the solid-state battery packaging film, and improve the flexibility of the stress during the isostatic pressing process of the solid-state battery.

[0009] In some embodiments, the housing further includes a plurality of side walls connected in sequence. The side walls and the bottom wall jointly enclose the accommodating cavity. The solid-state battery clamp further includes an elastic limiting member. One end of the elastic limiting member is connected to the side wall, and the other end is connected to the clamping unit. The elastic limiting member is configured to elastically deform when the shrinkage force of the packaging film edge is greater than the pre-tightening force of the elastic limiting member during the isostatic pressing process, thereby allowing the clamping unit to move in a direction towards the center of the solid-state battery. In the above structure, the side wall and the bottom wall are connected to form a stable box-shaped structure to limit the clamping assembly and the solid-state battery. The elastic limiting member exerts a pulling force on the clamping assembly during the initial isostatic pressing process to limit the movement of the solid-state battery. In the later stage of isostatic pressing, the solid-state battery shrinks and moves, which can break through the shrinkage threshold of the elastic limiting member, so that the clamping unit can move freely, thereby forming a dynamic control to meet the different needs of the solid-state battery at different stages of isostatic pressing, improving the working efficiency of isostatic pressing and the product quality.

[0010] In some embodiments, the bottom wall is provided with a first guide groove extending in a first direction and a second guide groove extending in a second direction. The first direction is perpendicular to the second direction. One of the at least two slidable clamping units is slidably connected to the first guide groove, and the other is slidably connected to the second guide groove. In the above structure, the first guide groove and the second guide groove are arranged to limit the movement direction of the clamping unit, which can limit the shrinkage direction of the solid-state battery to reduce the risk of damage to the packaging film of the solid-state battery.

[0011] In some embodiments, the clamping unit comprises an upper clamping plate, a lower clamping plate, and a fastener. The lower clamping plate is arranged opposite to the upper clamping plate, and the fastener penetrates through the upper clamping plate and the lower clamping plate to adjust the distance between the two. The upper clamping plate and the lower clamping plate form a clamping area for clamping the edge of the solid-state battery packaging film, and a pre-tightening force is applied to the edge of the packaging film by tightening the fastener. In the above structure, the packaging film is clamped by the upper clamping plate and the lower clamping plate, and the contact area between the two can be increased, and the clamping force on the packaging film can be improved by arranging the two clamping plates opposite to each other. The fastener is used to adjust the clamping pre-tightening force of the two clamping plates, which can adapt to packaging films of different thicknesses.

[0012] In some embodiments, the bottom of the lower clamping plate is provided with a guide protrusion that is in sliding fit with the first guide groove or the second guide groove. In the above structure, the guide protrusion can improve the strength between the clamping unit and the shell and the convenience of assembly.

[0013] In some embodiments, the surface of the upper clamping plate facing the lower clamping plate is provided with a first buffer pad, and the surface of the lower clamping plate facing the upper clamping plate is provided with a second buffer pad. The first buffer pad and the second buffer pad are arranged opposite to each other and together form a clamping area for directly contacting and clamping the edge of the solid-state battery packaging film. In the above structure, the first buffer pad and the second buffer pad can reduce the risk of rupture of the clamping part of the packaging film caused by the pressure of the upper clamping plate and the lower clamping plate, while ensuring the clamping force.

[0014] In some embodiments, the bottom wall is further provided with a receiving groove, and at least part of the elastic limiting piece is accommodated in the receiving groove. In the above structure, the elastic limiting piece is accommodated in the receiving groove, reducing the interference of the elastic limiting piece with the clamping unit.

[0015] In some embodiments, the extension direction of the receiving groove is the same as the extension direction of the first guide groove, and the receiving groove and the first guide groove are in communication with each other. In the above process, the receiving groove and the first guide groove are in communication, improving the manufacturing efficiency.

[0016] In a second aspect, the present application provides a solid-state battery manufactured using the solid-state battery clamp in the above embodiments.

[0017] In a third aspect, the present application provides a battery manufacturing device comprising the solid-state battery clamp in the above embodiments.

[0018] The above description is only a summary of the technical solutions of the present application. In order to more clearly understand the technical means of the present application, the following specific embodiments of the present application can be implemented according to the content of the specification, and in order to make the above and other purposes, features and advantages of the present application more obvious and easy to understand, the following specific embodiments of the present application are described. BRIEF DESCRIPTION OF DRAWINGS

[0019] The features, advantages, and technical and artistic effects of the exemplary embodiments of the present application will be described below with reference to the accompanying drawings.

[0020] Figure 1 Structure diagram of a solid-state battery according to an embodiment of the present application;

[0021] Figure 2 Structure diagram of a solid-state battery clamp according to some embodiments of the present application;

[0022] Figure 3 Structure diagram of a solid-state battery clamp according to some other embodiments of the present application;

[0023] Figure 4 Structure diagram of a solid-state battery clamp according to some other embodiments of the present application;

[0024] Figure 5 Structure diagram of a solid-state battery clamp according to some other embodiments of the present application.

[0025] Detailed description of the drawings

[0026] 1. A solid-state battery; 101. A packaging film; 102. An electrode assembly; 103. A receiving cavity; 104. An edge of the packaging film; 2. A solid-state battery clamp; 201. A housing; 202. A clamping assembly; 203. A receiving cavity; 204. A bottom wall; 205. A clamping unit; 206. A side wall; 207. An elastic limiting piece; 208. A first guide groove; 209. A second guide groove; 210. An upper clamping plate; 211. A lower clamping plate; 212. A fastener; 213. A guide protrusion; 214. A first buffer pad; 215. A second buffer pad; 216. A receiving groove; X. A first direction; Y. A second direction. DETAILED DESCRIPTION

[0027] The embodiments of the technical solutions of the present application will be described in detail below with reference to the accompanying drawings. The following embodiments are only used to more clearly illustrate the technical solutions of the present application, and therefore only serve as examples, and cannot limit the protection scope of the present application.

[0028] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which the present application belongs; the terms used herein are only for the purpose of describing specific embodiments of the present application, and are not intended to limit the present application; the terms "include" and "have" and any variations thereof in the specification and claims of the present application and the above description of drawings are intended to cover non-exclusive inclusion.

[0029] In the description of the embodiments of the present application, the technical terms "first", "second", etc. are only used to distinguish different objects, and cannot be understood as indicating or implying relative importance or implicitly indicating the number, specific order or primary and secondary relationship of the indicated technical features. In the description of the embodiments of the present application, the meaning of "multiple" is more than two, unless otherwise explicitly specified and limited.

[0030] Reference herein to "embodiments" means that the particular features, structures, or characteristics described in connection with the embodiments can be included in at least one embodiment of the present application. The appearance of this phrase in various places in the specification does not necessarily all refer to the same embodiment, nor is it necessarily a separate or alternative embodiment to other embodiments. It is explicitly and implicitly understood by those skilled in the art that the embodiments described herein can be combined with other embodiments.

[0031] In the description of the embodiments of the present application, the term "and / or" is only a description of the association relationship of the associated objects, which means that there can be three relationships, for example, A and / or B, which can represent the three cases of A alone, A and B together, and B alone. In addition, the character " / " herein generally represents an "or" relationship between the associated objects before and after it.

[0032] In the description of the embodiments of the present application, the term "multiple" refers to more than two (including two), and similarly, "multiple groups" refers to more than two groups (including two groups), and "multiple pieces" refers to more than two pieces (including two pieces).

[0033] In the description of the embodiments of the present application, the technical terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the embodiments of the present application and simplifying the description, and therefore cannot be understood as indicating or implying that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the embodiments of the present application.

[0034] In the description of the embodiments of the present application, unless otherwise explicitly specified and limited, the technical terms "mounting", "connection", "connection", "fixing" and the like should be understood in a broad sense, for example, it can be fixedly connected, or it can be detachably connected, or it can be integrated; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium; it can be the internal communication of two elements or the interaction relationship between two elements. For those skilled in the art, the specific meaning of the above terms in the embodiments of the present application can be understood according to the specific circumstances.

[0035] The solid-state battery cell generally includes a solid-state electrolyte layer and an electrode layer arranged in a stack. The poor solid-solid interface contact between the electrode layer and the solid-state electrolyte in the solid-state battery cell easily leads to an increase in interface impedance. Therefore, the solid-state battery needs to undergo a warm isostatic pressing process to improve the density. During the warm isostatic pressing process, the hydraulic oil exerts hydrostatic pressure on the packaging film of the solid-state battery, causing the edge of the packaging film to shrink towards the center of the solid-state battery.

[0036] In the related art, the clamp fixes and clamps the edge of the packaging film, and the edge of the packaging film will be damaged due to excessive stretching during the shrinking process. In particular, at the edge of the packaging film and the solid-state electrode assembly, when the tensile stress is greater than the damage limit of the packaging film, a rupture will be formed. At the same time, the packaging film will also pull the tab during the shrinking process, causing the tab root to crack, reducing the product yield and production efficiency.

[0037] Based on the above problems, embodiments of the present application provide a solid-state battery clamp, which includes a housing and a clamping assembly. By providing the housing, the clamping assembly and the solid-state battery are accommodated in the warm isostatic pressing process of the solid-state battery. The housing includes a bottom wall for supporting the clamping assembly and the solid-state battery. The clamping assembly is arranged in the accommodation cavity and clamps the solid-state battery, so that the solid-state battery can maintain a relatively fixed position when subjected to all-around hydraulic pressure by the hydraulic oil, reducing the risk of damage caused by movement of the solid-state battery. The clamping assembly can slide relative to the bottom wall, and the solid-state battery shrinks under pressure during the warm isostatic pressing process, and the clamping assembly also moves as the solid-state battery shrinks and deforms.

[0038] The above structure changes the clamping of the solid-state battery from rigid positioning to dynamic cooperation, allowing the solid-state battery to deform during warm isostatic pressing, thereby reducing damage to the packaging film caused by pulling and reducing the risk of rupture of the tab of the solid-state battery caused by pulling. By ensuring uniform transmission of pressure and integrity of the battery structure during the warm isostatic pressing process, the compaction degree and bonding state of the materials inside the solid-state battery are more ideal, thereby improving the energy density, charge and discharge performance and other key indicators of the battery, and improving the overall quality of the product.

[0039] Please refer to Figures 1 to 3 , Figure 1 a structural schematic diagram of a solid-state battery according to an embodiment of the present application, Figure 2 a structural schematic diagram of a solid-state battery clamp according to some embodiments of the present application, Figure 3 a structural schematic diagram of a solid-state battery clamp according to some embodiments of the present application.

[0040] As shown in the figure, the embodiment of the present application provides a solid-state battery clamp 2 for use in the warm isostatic pressing process of a solid-state battery 1. The solid-state battery clamp 2 includes a shell 201 and a clamping assembly 202. The shell 201 has a containing cavity 203, and the shell 201 includes a bottom wall 204. The clamping assembly 202 is used to clamp the edge of the packaging film 101 of the solid-state battery 1, and the clamping assembly 202 is arranged in the containing cavity 203 and is slidably connected with the bottom wall 204. In the warm isostatic pressing process, when the hydraulic oil applies hydrostatic pressure to the packaging film 101 of the solid-state battery 1 and causes the edge of the packaging film 101 to shrink towards the center of the solid-state battery 1, the clamping assembly 202 is configured to slide inward relative to the bottom wall 204 in response to the shrinkage of the packaging film 101, so as to follow the movement of the edge.

[0041] The solid-state battery 1 includes a packaging film 101 and an electrode assembly 102, and the electrode assembly 102 is encapsulated in the packaging film 101. The packaging film 101 includes a double-layered aluminum plastic film, for example, and the periphery of the aluminum plastic film is sealed by a hot melt process to form an internally fully sealed cavity, which effectively prevents water and oxygen from entering. The electrode assembly 102 is arranged in the sealed cavity, and the electrode assembly 102 includes a positive electrode current collector / active material layer, a solid-state electrolyte layer, and a negative electrode current collector / active material layer stacked in sequence. The solid-state battery clamp 2 is fixedly connected (such as mechanically buckled or vacuum adsorbed) with the outer edge of the packaging film 101 to avoid direct contact with the surface of the electrode assembly 102. The external force applied by the clamp is flexibly transmitted to the edge area of the electrode assembly 102 through the packaging film 101, thereby reducing the risk of deformation of the electrode sheet or peeling of the solid-state electrolyte interface.

[0042] The shell 201 is the basic structure of the solid-state battery clamp 2, and its core function is to provide a stable containing space to ensure that the solid-state battery 1 and the clamping assembly 202 are in a controlled environment during the warm isostatic pressing process. The shell 201 is internally provided with a containing cavity 203 for placing the solid-state battery 1. The bottom wall 204 serves as the sliding reference surface of the clamping assembly 202 and needs to have high flatness and wear resistance to ensure the smoothness of the sliding process. High-strength alloy steel or stainless steel is usually used for manufacturing to withstand the high-pressure and high-temperature environment in the warm isostatic pressing process.

[0043] The clamping assembly 202 is a key component that directly acts on the edge of the solid-state battery 1, and its core function is to realize synchronous movement with the shrinkage of the packaging film 101 through slidable connection. The clamping assembly 202 is connected with the bottom wall 204 of the shell 201 through a sliding guide rail to allow free movement in the horizontal direction. The warm isostatic pressing requires that the pressure uniformly acts on the surface of the battery to achieve good pressing effect. The sliding design of the clamping assembly 202 allows the packaging film 101 to remain flat during the shrinkage process, so that the hydrostatic pressure applied by the hydraulic oil can be uniformly transmitted to the inside of the battery through the packaging film 101.

[0044] In the technical solution of the embodiment of the application, the shell 201 is arranged to accommodate the clamping assembly 202 and the solid-state battery 1 during the warm isostatic pressing of the solid-state battery 1. The shell 201 includes a bottom wall 204 for supporting the clamping assembly 202 and the solid-state battery 1. The clamping assembly 202 is arranged in the accommodation cavity 203 and clamps the solid-state battery 1, so that the solid-state battery 1 can maintain a relatively fixed position when subjected to all-around hydraulic pressure by the hydraulic oil, thereby reducing the risk of damage caused by movement of the solid-state battery 1. The clamping assembly 202 can slide relative to the bottom wall 204, and the solid-state battery 1 shrinks under pressure during the warm isostatic pressing, and the clamping assembly 202 also moves as the solid-state battery 1 shrinks and deforms. The above structure changes the clamping of the solid-state battery 1 from rigid positioning to dynamic cooperation, allowing the workpiece solid-state battery 1 to deform within the expected range during the warm isostatic pressing, thereby reducing damage to the packaging film 101 caused by pulling and reducing the risk of rupture of the tab of the solid-state battery 1 caused by pulling. By ensuring uniform transmission of pressure during the warm isostatic pressing process and the integrity of the battery structure, the compaction degree and bonding state of the materials inside the solid-state battery 1 are more ideal, thereby improving the energy density, charge and discharge performance and other key indicators of the battery and improving the overall quality of the product.

[0045] As shown in Figure 3 In some embodiments of the application, the clamping assembly 202 includes four clamping units 205, which are arranged corresponding to the four side edges of the solid-state battery 1, for clamping the edges of the packaging film 101 of the solid-state battery 1. At least two of the four clamping units 205 are slidably connected with the bottom wall 204 and can move in the direction towards the center of the solid-state battery 1 in response to the shrinkage of the packaging film 101. The two slidable clamping units 205 are arranged corresponding to the adjacent two edges of the solid-state battery 1, respectively.

[0046] The four clamping units 205 are arranged corresponding to the four side edges of the solid-state battery 1, respectively, to form all-around clamping of the edges of the battery. This layout can uniformly distribute the clamping force and reduce damage to the solid-state battery 1 caused by excessive or insufficient local clamping force. Each clamping unit 205 is responsible for clamping one edge of the packaging film 101 of the solid-state battery 1, ensuring that the packaging film 101 cannot move or deform due to the action of pressure during the warm isostatic pressing, thereby maintaining the shape and internal structure of the battery stable.

[0047] At least two of the four clamping units 205 are slidably connected with the bottom wall 204. This slidable connection is usually achieved by providing sliding blocks or rollers at the bottom of the clamping units 205, which cooperate with sliding rails or guide grooves on the bottom wall 204. The slidable clamping units 205 can move in the direction towards the center of the solid-state battery 1 in response to the shrinkage of the packaging film 101. When the hydraulic oil exerts hydrostatic pressure on the packaging film 101, causing the edges of the packaging film 101 to shrink towards the center, the slidable clamping units 205 move accordingly, always maintaining effective clamping of the edges of the packaging film 101.

[0048] For example, the solid-state battery 1 has a rectangular structure, and the four clamping units 205 are respectively arranged corresponding to the four edges of the rectangular structure. The four clamping units 205 include: a first unit and a second unit arranged opposite along a first direction X, and a third unit and a fourth unit arranged opposite along a second direction Y. Among them, the first unit and the second unit extend along the second direction Y, and the third unit and the fourth unit extend along the first direction X. The first unit, the third unit, the second unit and the fourth unit are sequentially arranged along the circumference of the solid-state battery 1. The first unit and the third unit are slidably connected with the bottom wall 204 through a pulley, and the second unit and the fourth unit are fixedly connected with the shell 201.

[0049] The two slidable clamping units 205 correspond to adjacent edges respectively, which can more accurately follow the complex deformation of the packaging film 101 during the shrinkage process. The first unit can adapt to the shrinkage of the packaging film 101 along the first direction X, and the third unit can adapt to the shrinkage of the packaging film 101 along the second direction Y. Since the clamping units 205 can automatically move in response to the shrinkage of the packaging film 101, there is no need for frequent manual adjustment of the clamps, reducing the manual operation links in the production process. This not only improves production efficiency, but also reduces quality problems caused by human operation errors, such as improper clamping force adjustment, clamping position deviation, etc. By better protecting the battery structure and improving the process quality, the design of the slidable clamping unit 205 effectively reduces the scrap rate of the solid-state battery 1 during the warm isostatic pressing process. Reducing the waste caused by damage to the packaging film 101, damage to the internal structure of the battery or failure to meet performance standards, improving the utilization rate of raw materials and the overall qualification rate of products, thereby reducing production costs.

[0050] In the above structure, the four clamping units 205 are arranged to match the structure and shape of the solid-state battery 1, which can improve the clamping force and stability of the solid-state battery 1. The arrangement of multiple clamping units 205 can simultaneously move according to the deformation of the four edges of the solid-state battery 1, further reducing the risk of damage to the solid-state battery 1 during the warm isostatic pressing process.

[0051] In some embodiments of the present application, the four clamping units 205 are respectively slidably connected with the bottom wall 204.

[0052] Exemplarily, the solid-state battery 1 is of a rectangular structure, and the four clamping units 205 are respectively arranged corresponding to the four edges of the rectangular structure. The four clamping units 205 include: a first unit and a second unit arranged opposite along a first direction X, and a third unit and a fourth unit arranged opposite along a second direction Y. Among them, the first unit and the second unit extend along the second direction Y, and the third unit and the fourth unit extend along the first direction X. The first unit, the third unit, the second unit and the fourth unit are sequentially arranged along the circumferential direction of the solid-state battery 1. The first unit, the second unit, the third unit and the fourth unit are slidably connected to the bottom wall 204 through pulleys.

[0053] The four clamping units 205 are all slidable, so that during the warm isostatic pressing process, no matter which direction the packaging film 101 shrinks in, the corresponding clamping unit 205 can timely follow the movement. This all-around dynamic clamping can ensure that the packaging film 101 is always subjected to uniform clamping force throughout the shrinking process, avoiding damage to the packaging film 101 or stress concentration inside the battery due to local clamping force changes. For example, when the packaging film 101 shrinks faster on one side, the clamping unit 205 on that side will quickly slide towards the center to maintain close contact with the packaging film 101, preventing the occurrence of clamping gaps.

[0054] Stable all-around clamping and slidable design help maintain the flatness and integrity of the packaging film 101. When the hydraulic oil applies hydrostatic pressure, a uniform packaging film 101 state can make the pressure more uniformly transmitted through the packaging film 101 to the inside of the solid-state battery 1. This helps to uniformly compact the materials inside the battery, improves the energy density of the battery, and prolongs the charge and discharge cycle life.

[0055] In the above structure, the four clamping units 205 are all slidable relative to the bottom wall 204, which can more quickly respond to the shrinkage of the packaging film 101 edge of the solid-state battery 1, and improve the flexibility of the stress in the warm isostatic pressing process of the solid-state battery 1.

[0056] As shown in FIGS. 1, 2 and 3, the solid-state battery clamp 2 further includes a plurality of clamping units 205 arranged around the bottom wall 204. The clamping units 205 are configured to clamp the packaging film 101 of the solid-state battery 1. Figure 3 As shown in FIGS. 1, 2 and 3, the solid-state battery clamp 2 further includes a plurality of clamping units 205 arranged around the bottom wall 204. The clamping units 205 are configured to clamp the packaging film 101 of the solid-state battery 1. Figure 4 As shown in FIGS. 1, 2 and 3, the solid-state battery clamp 2 further includes a plurality of clamping units 205 arranged around the bottom wall 204. The clamping units 205 are configured to clamp the packaging film 101 of the solid-state battery 1.

[0057] Exemplarily, the shell 201 is formed by a plurality of side walls 206 connected in sequence and a bottom wall 204, which together enclose a containing cavity 203. The side walls 206 and the bottom wall 204 are generally made of high-strength, corrosion-resistant metal materials, such as stainless steel, aluminum alloy, etc., to ensure that they can withstand a large pressure without deformation during the warm isostatic pressing process. The plurality of side walls 206 are connected end to end to form a closed frame structure, which together with the bottom wall 204 forms a stable containing space for placing the solid-state battery 1.

[0058] The elastic limiting member 207 is generally made of elastic materials, such as springs, rubbers, etc. It has a structure with one end connected to the side wall 206 and the other end connected to the clamping unit 205. Taking a spring as an example, it is generally a cylindrical coil spring with a clear elastic coefficient and pre-tightening force. The two ends of the spring are respectively provided with connecting structures, such as hooks, screw holes, etc., to facilitate reliable connection with the side wall 206 and the clamping unit 205.

[0059] During the warm isostatic pressing process, when the shrinkage force of the edge of the packaging film 101 is less than the pre-tightening force of the elastic limiting member 207, the elastic limiting member 207 remains unchanged, limiting the movement of the clamping unit 205, so that the clamping unit 205 stably clamps the edge of the packaging film 101. When the shrinkage force of the edge of the packaging film 101 is greater than the pre-tightening force of the elastic limiting member 207, the elastic limiting member 207 deforms elastically, allowing the clamping unit 205 to move towards the center of the solid-state battery 1, thereby adapting to the shrinkage of the packaging film 101.

[0060] The clamping unit 205 is used to directly clamp the edge of the packaging film 101 of the solid-state battery 1. Optionally, the surface of the clamping block is designed with appropriate texture or cushioning material to increase the friction with the packaging film 101 while preventing damage to the packaging film 101. The main function of the clamping unit 205 is to stably clamp the edge of the packaging film 101 during the warm isostatic pressing process, ensuring the position of the battery fixed. At the same time, under the action of the elastic limiting member 207, it can move appropriately according to the shrinkage of the packaging film 101, ensuring the clamping effect while adapting to the changes of the packaging film 101.

[0061] In the above structure, the design of the elastic limiting piece 207 enables the clamping unit 205 to automatically adjust the position according to the shrinkage force of the packaging film 101. In the initial stage of warm isostatic pressing, when the shrinkage force of the packaging film 101 is small, the pre-tightening force of the elastic limiting piece 207 can limit the movement of the clamping unit 205, ensuring that the packaging film 101 is stably clamped and preventing the battery position from shifting. As the pressure increases, the shrinkage force of the packaging film 101 gradually increases, and when it exceeds the pre-tightening force of the elastic limiting piece 207, the elastic limiting piece 207 deforms elastically, allowing the clamping unit 205 to move towards the center of the battery, thereby always maintaining effective clamping of the packaging film 101. This dynamic adaptation mechanism can better cope with the shrinkage of the packaging film 101 at different stages, improving the stability and reliability of clamping. By reasonably setting the pre-tightening force and elastic coefficient of the elastic limiting piece 207, the movement range and intensity of the clamping unit 205 can be accurately controlled. This avoids excessive clamping due to the fixed clamping unit 205, preventing the packaging film 101 from being damaged or the battery from being subjected to excessive pressure; at the same time, it also avoids the case of insufficient clamping, ensuring that the packaging film 101 is always tightly clamped during the entire warm isostatic pressing process, maintaining the structural integrity of the battery. Moreover, since the elastic limiting piece 207 can improve the stability of clamping and process quality, it effectively reduces the waste rate of the solid-state battery 1 during the warm isostatic pressing process. This reduces waste due to damage to the packaging film 101, damage to the internal structure of the battery, or failure to meet performance standards, improving the utilization rate of raw materials.

[0062] In some embodiments of the present application, the bottom wall 204 is provided with a first guide groove 208 extending in the first direction X and a second guide groove 209 extending in the second direction Y, the first direction X and the second direction Y being perpendicular to each other, and among the at least two slidable clamping units 205, one clamping unit 205 is in sliding fit with the first guide groove 208, and the other clamping unit 205 is in sliding fit with the second guide groove 209.

[0063] Optionally, the first guide groove 208 and the second guide groove 209 are special-shaped grooves opened on the bottom wall 204, and their cross-sectional shapes are usually rectangular or trapezoidal to achieve good sliding fit with the clamping unit 205. The depth and width of the guide groove need to be accurately designed according to the size and sliding requirements of the clamping unit 205, to ensure that the clamping unit 205 can smoothly slide in the groove, while ensuring a certain fit accuracy to prevent the clamping unit 205 from shaking or falling out during sliding.

[0064] Two mutually perpendicular guide grooves provide precise sliding guidance for the clamping unit 205. The first guide groove 208 restricts the movement freedom of the clamping unit 205 that cooperates with it in the first direction X, so that it can only slide in the first direction X; the second guide groove 209 restricts the movement freedom of the other clamping unit 205 in the second direction Y, so that it can only slide in the second direction Y. Through this design, precise movement of the clamping unit 205 in a two-dimensional plane is achieved.

[0065] For example, the first direction X is the length direction of the square solid-state battery 1, and the second direction Y is the width direction of the square solid-state battery 1.

[0066] The design of the first guide groove 208 and the second guide groove 209 being perpendicular to each other enables the clamping unit 205 to be accurately positioned in a two-dimensional plane. When clamping the solid-state battery 1, the positions of the clamping units 205 sliding in the first direction X and the second direction Y can be adjusted according to the size and shape of the battery, to ensure that the battery is accurately clamped at the center position of the clamp. This precise positioning ensures the consistency of the battery position each time it is clamped, thereby improving the repeatability of the warm isostatic pressing process and the consistency of the product. By adjusting the position of the clamping unit 205 in the guide groove, the clamp can adapt to solid-state batteries 1 of different sizes and shapes. For square batteries of different side lengths or cylindrical batteries of different diameters (with appropriate modification of the clamping unit 205), simply sliding the clamping unit 205 to the appropriate position can achieve effective clamping of the battery. This adaptability enables the clamp to have a wider range of applications, reducing the time and cost waste caused by replacing the clamp.

[0067] Optionally, the stable clamping of the clamping unit 205 in the length and width directions of the solid-state battery 1 ensures that the battery is stably supported and positioned in both main directions, so that the pressure does not concentrate or disperse locally due to uneven stress on the solid-state battery 1. For example, during the compaction of the electrode material of the battery, uniform pressure transmission ensures that the compaction density of each part of the electrode material is consistent, avoiding differences in electrode performance caused by uneven pressure, thereby improving the overall performance and stability of the battery.

[0068] The clamping unit 205 is a component that directly clamps the edge of the packaging film 101 of the solid-state battery 1. The main function of the clamping unit 205 is to stably clamp the edge of the packaging film 101 during the warm isostatic pressing process, ensuring that the position of the battery is fixed. Through cooperation with the guide groove, the clamping unit 205 can accurately adjust its position according to the size and shape of the battery to adapt to solid-state batteries 1 of different specifications.

[0069] In the above structure, by setting the first guide groove 208 and the second guide groove 209 to limit the moving direction of the clamping unit 205, the shrinkage direction of the solid-state battery 1 can be limited to reduce the risk of damage to the packaging film 101 of the solid-state battery 1.

[0070] As shown in Figure 4 and Figure 5 In some embodiments of the present application, the clamping unit 205 includes an upper clamping plate 210, a lower clamping plate 211, and a fastener 212. The lower clamping plate 211 is arranged opposite to the upper clamping plate 210, and the fastener 212 penetrates the upper clamping plate 210 and the lower clamping plate 211 to adjust the distance between them. The upper clamping plate 210 and the lower clamping plate 211 form a clamping area for clamping the edge of the packaging film 101 of the solid-state battery 1, and the fastener 212 is tightened to apply a pre-tightening force to the edge of the packaging film 101.

[0071] The upper clamping plate 210 is generally flat, and its shape and size are designed according to the shape and size of the edge of the packaging film 101 of the solid-state battery 1. The upper clamping plate 210 is an important component of the clamping unit 205, which is arranged opposite to the lower clamping plate 211 to form a clamping area. Under the action of the fastener 212, the upper clamping plate 210 moves downward and applies pressure to the edge of the packaging film 101 of the solid-state battery 1 placed in the clamping area, achieving the clamping function.

[0072] The lower clamping plate 211 is also flat and corresponds to the upper clamping plate 210. Its surface flatness is required to be high to ensure good contact with the edge of the packaging film 101. The lower clamping plate 211 provides support for the edge of the packaging film 101 of the solid-state battery 1 and cooperates with the upper clamping plate 210 to form a stable clamping space. Under the action of the fastener 212, the lower clamping plate 211 bears the pressure applied by the upper clamping plate 210 and firmly clamps the edge of the packaging film 101 together.

[0073] The fastener 212 is generally in the form of a bolt and nut combination. The bolt passes through the through holes in the upper clamp plate 210 and the lower clamp plate 211, and the nut is screwed onto the end of the bolt. By rotating the nut, the extension length of the bolt can be adjusted, thereby changing the distance between the upper clamp plate 210 and the lower clamp plate 211. The material of the fastener 212 is usually high-strength alloy steel to ensure that it can withstand a large pre-tightening force without deformation or damage. The fastener 212 is a key component for adjusting the distance between the upper clamp plate 210 and the lower clamp plate 211. By tightening or loosening the nut, the pre-tightening force exerted by the upper clamp plate 210 on the edge of the packaging film 101 can be accurately controlled. A suitable pre-tightening force can ensure that the edge of the packaging film 101 is firmly clamped, while not damaging the packaging film 101 due to excessive pressure. By tightening the fastener 212, the upper clamp plate 210 can uniformly exert a pre-tightening force on the edge of the packaging film 101 of the solid-state battery 1. This uniform clamping force can ensure that the edge of the packaging film 101 is subjected to the same pressure throughout the clamping area, avoiding local loosening or deformation of the packaging film 101 due to uneven clamping force. For example, during the warm isostatic pressing process, the uniform clamping force can ensure that the pressure exerted by the hydraulic oil is uniformly transmitted through the packaging film 101 to the inside of the battery, so that the materials inside the battery are uniformly compacted, improving the stability of the process and the consistency of the product quality.

[0074] For example, the number of fasteners 212 is two, and the two fasteners 212 are respectively arranged at the two ends of the upper clamp plate 210 in the length direction, thereby improving the balance of the pre-tightening force on the packaging film 101.

[0075] By accurately adjusting the tightening degree of the fastener 212, the pre-tightening force exerted by the upper clamp plate 210 on the edge of the packaging film 101 can be accurately controlled. Different solid-state batteries 1 and packaging film 101 materials may require different pre-tightening forces to achieve the best clamping effect. For example, for some packaging films 101 with brittle material, a smaller pre-tightening force is needed to avoid damage; while for some packaging films 101 with high strength, the pre-tightening force can be appropriately increased to ensure the firmness of clamping. Accurate pre-tightening force control can improve the quality and reliability of clamping, reducing process problems caused by improper pre-tightening force. Uniform clamping force and accurate pre-tightening force control can ensure that the solid-state battery 1 is subjected to uniform pressure during the warm isostatic pressing process, improving the uniformity and consistency of the compaction of the materials inside the battery, thereby improving the performance and quality of the battery.

[0076] In some embodiments of the present application, the bottom of the lower clamp plate 211 is provided with a guide protrusion 213 that slidably fits with the first guide groove 208 or the second guide groove 209.

[0077] The lower clamping plate 211 is an important component in the clamping unit 205 for supporting the edge of the solid-state battery 1 packaging film 101, usually in a flat plate structure. Its material is generally selected from high-strength and corrosion-resistant materials such as stainless steel, aluminum alloy, etc. to ensure stable performance under complex working conditions such as warm isostatic pressing. The lower clamping plate 211 not only bears the clamping force applied by the fastener 212 through the upper clamping plate 210, but also cooperates with the guide protrusion 213 to achieve stable sliding in a specific direction. The guide protrusion 213 is provided at the bottom of the lower clamping plate 211 and is a key structure for sliding cooperation with the first guide groove 208 or the second guide groove 209. Its shape and size need to be accurately matched according to the design of the guide groove, and common shapes include rectangular, dovetail, etc. The material of the guide protrusion 213 should have high hardness and wear resistance, for example, alloy steel with surface hardening treatment, to ensure that it is not easily worn during long-term sliding, ensuring smoothness and precision of sliding. Exemplarily, the surface of the plate structure of the lower clamping plate 211 protrudes to form the guide protrusion 213, and the guide protrusion 213 is an integral structure with the lower clamping plate 211.

[0078] Optionally, the number of first guide grooves 208 is two, and the number of second guide grooves 209 is also two. The first unit and the third unit are respectively matched with the two first guide grooves 208, and the second unit and the fourth unit are respectively matched with the two second guide grooves 209. The guide protrusion 213 of the first unit is located in the first guide groove 208, the guide protrusion 213 of the second unit is located in the second guide groove 209, the guide protrusion 213 of the third unit is located in the first guide groove 208, and the guide protrusion 213 of the fourth unit is located in the second guide groove 209.

[0079] The sliding cooperation of the guide protrusion 213 with the first guide groove 208 or the second guide groove 209 can limit the movement direction of the lower clamping plate 211, so that it can only slide in the first direction X (length direction) or the second direction Y (width direction) as preset. This guide avoids the deviation or shaking of the lower clamping plate 211 during sliding, thereby ensuring the positional accuracy of the clamping unit 205 when clamping the edge of the solid-state battery 1 packaging film 101.

[0080] In some embodiments of the present application, the surface of the upper clamping plate 210 facing the lower clamping plate 211 is provided with a first buffer pad 214, and the surface of the lower clamping plate 211 facing the upper clamping plate 210 is provided with a second buffer pad 215. The first buffer pad 214 and the second buffer pad 215 are oppositely arranged and jointly constitute a clamping area for directly contacting and clamping the edge of the solid-state battery 1 packaging film 101.

[0081] The first cushion 214 is usually made of materials with good elasticity and cushioning performance, such as silicone rubber, polyurethane foam, etc. Silicone rubber has excellent high-temperature resistance and chemical corrosion resistance, and can maintain stable performance in a high-temperature environment with isostatic pressure; polyurethane foam has good softness and resilience, and can effectively absorb pressure. The shape matches the surface shape of the upper clamping plate 210 facing the lower clamping plate 211, and is generally rectangular or irregular shaped to match the edge shape of the packaging film 101. The size is designed according to the width and thickness of the edge of the packaging film 101. The first cushion 214 can be firmly adhered to the surface of the upper clamping plate 210 facing the lower clamping plate 211 by an adhesive to ensure that it does not shift during clamping. Similar to the first cushion 214, the second cushion 215 is also made of materials with good elasticity and cushioning performance to ensure that it can uniformly clamp the edge of the packaging film 101 when acting together with the first cushion 214.

[0082] The first cushion 214 and the second cushion 215 are oppositely arranged, and when clamping the edge of the packaging film 101 of the solid-state battery 1, they can uniformly disperse the concentrated pressure applied by the upper clamping plate 210 to the entire contact surface of the packaging film 101. For example, when the upper clamping plate 210 applies pressure downward through the fastener 212, the cushion will elastically deform, allowing the pressure to be transmitted to the packaging film 101 in a more uniform manner, avoiding problems such as damage or scratches to the packaging film 101 caused by excessive local pressure. This is particularly important for packaging films 101 that are thin and brittle, as it can effectively improve product yield. During installation, adjustment, or isostatic pressing of the clamp, some impact force may be generated. The elasticity of the cushion can absorb these impact forces, reducing the instantaneous impact on the packaging film 101 and further protecting the packaging film 101 from damage. For example, when placing the battery into the clamp, if the operation is not careful and a collision occurs, the cushion can act as a buffer to prevent the packaging film 101 from breaking due to the collision.

[0083] The surface of the cushion usually has a certain roughness, which can increase the friction between the edge of the packaging film 101. This increased friction can prevent the packaging film 101 from slipping during clamping, ensuring the stability of the clamping. During isostatic pressing, high-pressure hydraulic oil can generate a lot of pressure on the battery, and if the packaging film 101 slips, it can cause uneven pressure transmission, affecting the compaction effect of the materials inside the battery. The friction provided by the cushion can effectively prevent this from happening, ensuring the stability of the process quality. Since the cushion has a certain elasticity, it can adapt to packaging films 101 of different thicknesses of the solid-state battery 1. When the thickness of the packaging film 101 changes slightly, the cushion can adjust the clamping gap through its elastic deformation to always maintain stable clamping of the edge of the packaging film 101.

[0084] In some embodiments of the present application, the bottom wall 204 is further provided with a receiving groove 216, and at least part of the elastic limiting member 207 is accommodated in the receiving groove 216. Optionally, the elastic limiting member 207 is completely located in the receiving groove 216.

[0085] The receiving groove 216 is a groove of a specific shape opened in the bottom wall 204, which provides a mounting space for the elastic limiting member 207 and positions and restricts the elastic limiting member 207. The shape and size of the receiving groove 216 match the shape of the elastic limiting member 207, and common shapes include rectangular, circular, trapezoidal, etc. The depth and width of the groove need to be accurately designed according to the size of the elastic limiting member 207 and the installation requirements, so as to ensure that the elastic limiting member 207 can be stably accommodated in the groove, while being able to elastically deform when needed. The surface of the receiving groove 216 is usually finely processed to ensure good contact with the elastic limiting member 207 and reduce friction and wear.

[0086] The elastic limiting member 207 is a component with elasticity, usually made of elastic materials such as rubber, spring steel, polyurethane, etc. Its main function is to provide elastic limitation in the device. When other components move to a certain position, the elastic limiting member 207 absorbs energy by its elastic deformation to prevent further movement of the components, thereby playing a limiting and protecting role. The elastic limiting member 207 can have various forms, such as springs, rubber blocks, elastic pins, etc.

[0087] The receiving groove 216 provides an accurate mounting position for the elastic limiting member 207, so that the elastic limiting member 207 can be accurately positioned at the desired position. When the solid-state battery 1 or the clamping unit 205 moves into contact with the elastic limiting member 207, the elastic limiting member 207 can play a limiting role according to the predetermined position and manner, ensuring that the movement range of the components is within the allowed accuracy range.

[0088] By stably accommodating the elastic limiting member 207 in the receiving groove 216, the elastic limiting member 207 can play a limiting role at the same position every time the device operates, achieving high-precision repeated positioning.

[0089] In some embodiments of the present application, the extension direction of the accommodating groove 216 is the same as that of the first guide groove 208, and the accommodating groove 216 and the first guide groove 208 are in communication with each other. In the above technical solution, the accommodating groove 216 and the first guide groove 208 are in communication with each other and have the same spatial trend. For example, if the first guide groove 208 extends along the first direction X, the accommodating groove 216 also extends along the first direction X. The accommodating groove 216 and the first guide groove 208 are in communication with each other to form a continuous spatial structure. Such communication enables the elastic limiting piece 207 to effectively interact with the component moving in the first guide groove 208 when the elastic limiting piece 207 is in action.

[0090] In some optional embodiments, the solid-state battery clamp 2 is used in the warm isostatic pressing process of the solid-state battery 1. The solid-state battery clamp 2 comprises a shell 201 and a clamping assembly 202. The shell 201 has a receiving cavity 203, and the shell 201 comprises a bottom wall 204. The clamping assembly 202 is used to clamp the edge of the solid-state battery 1, and the clamping assembly 202 is arranged in the receiving cavity 203 and is slidably connected with the bottom wall 204. In the warm isostatic pressing process, when the hydraulic oil exerts hydrostatic pressure on the packaging film 101 of the solid-state battery 1 and causes the edge of the packaging film 101 to shrink towards the center of the solid-state battery 1, the clamping assembly 202 is configured to slide inward relative to the bottom wall 204 in response to the shrinkage of the packaging film 101, so as to follow the movement of the edge. The clamping assembly 202 comprises four clamping units 205, which are respectively arranged corresponding to the four side edges of the solid-state battery 1, and are used to clamp the edge of the packaging film 101 of the solid-state battery 1. The four clamping units 205 are respectively slidably connected with the bottom wall 204 and can move in the direction towards the center of the solid-state battery 1 in response to the shrinkage of the packaging film 101. The shell 201 further comprises a plurality of side walls 206 connected in sequence, and the side walls 206 and the bottom wall 204 jointly enclose the receiving cavity 203. The solid-state battery clamp 2 further comprises an elastic limiting piece 207, one end of the elastic limiting piece 207 is connected to the side wall 206, and the other end is connected to the clamping unit 205. The elastic limiting piece 207 is configured to elastically deform when the shrinkage force of the edge of the packaging film 101 is greater than the pre-tightening force of the elastic limiting piece 207 in the warm isostatic pressing process, thereby allowing the clamping unit 205 to move in the direction towards the center of the solid-state battery 1. The bottom wall 204 is provided with a first guide groove 208 extending along a first direction X and a second guide groove 209 extending along a second direction Y, the first direction X and the second direction Y are perpendicular to each other, and among the at least two slidably clamping units 205, one clamping unit 205 is slidably connected with the first guide groove 208, and the other clamping unit 205 is slidably connected with the second guide groove 209. The clamping unit 205 comprises an upper clamping plate 210, a lower clamping plate 211 and a fastener 212. The lower clamping plate 211 is arranged opposite to the upper clamping plate 210, and the fastener 212 penetrates through the upper clamping plate 210 and the lower clamping plate 211, and is used to adjust the distance between the upper clamping plate 210 and the lower clamping plate 211. The upper clamping plate 210 and the lower clamping plate 211 form a clamping area for clamping the edge of the packaging film 101 of the solid-state battery 1, and the pre-tightening force is applied to the edge of the packaging film 101 by tightening the fastener 212. The bottom of the lower clamping plate 211 is provided with a guide protrusion 213, and the guide protrusion 213 is slidably connected with the first guide groove 208 or the second guide groove 209. The surface of the upper clamping plate 210 towards the lower clamping plate 211 is provided with a first buffer pad 214, and the surface of the lower clamping plate 211 towards the upper clamping plate 210 is provided with a second buffer pad 215, the first buffer pad 214 and the second buffer pad 215 are arranged opposite to each other and jointly form a clamping area for directly contacting and clamping the edge of the packaging film 101 of the solid-state battery 1.

[0091] The embodiments of the present application provide a solid-state battery 1 manufactured using the solid-state battery clamp 2 in the above embodiments. The embodiments of the present application also provide a battery manufacturing device comprising the solid-state battery clamp 2 in the above embodiments. Therefore, in the embodiments of the present application, the compaction degree and bonding state of the internal materials of the solid-state battery 1 are more ideal, thereby improving the key indicators such as the energy density, charge-discharge performance, and the like of the battery, and improving the overall quality of the product.

[0092] Although the present application has been described with reference to the preferred embodiments, various modifications can be made to it without departing from the scope of the present application, and components thereof can be replaced with equivalents, and in particular, the technical features mentioned in each of the embodiments can be combined in any manner as long as there is no structural conflict. The present application is not limited to the specific embodiments disclosed herein, but includes all technical solutions falling within the scope of the claims.

Claims

1. A solid state battery clamp, characterized by, A solid-state battery clamp for use in a warm isostatic pressing process of a solid-state battery, the solid-state battery clamp comprising: a housing having a receiving cavity, the housing comprising a bottom wall; a clamping assembly for clamping an edge of a solid-state battery, the clamping assembly being disposed in the receiving cavity and being slidably connected to the bottom wall, wherein, during the warm isostatic pressing process, when a hydraulic oil exerts a hydrostatic pressure on a packaging film of the solid-state battery and causes the edge of the packaging film to shrink towards a center of the solid-state battery, the clamping assembly is configured to slide inwardly relative to the bottom wall in response to the shrinkage of the packaging film to follow the movement of the edge.

2. The solid state battery gripper of claim 1, wherein, The clamping assembly comprises four clamping units respectively corresponding to four side edges of the solid-state battery, for clamping the edge of the packaging film of the solid-state battery, at least two of the four clamping units being slidably connected to the bottom wall and being movable in a direction towards the center of the solid-state battery in response to the shrinkage of the packaging film, the two slidable clamping units respectively corresponding to two adjacent edges of the solid-state battery.

3. The solid state battery gripper of claim 2, wherein, The four clamping units are respectively slidably connected to the bottom wall.

4. The solid state battery gripper of claim 2 or 3, wherein, The housing further comprises a plurality of side walls connected in sequence, the side walls and the bottom wall jointly enclosing the receiving cavity, The solid-state battery clamp further comprises a resilient limiting member, one end of the resilient limiting member being connected to the side wall and the other end being connected to the clamping unit, the resilient limiting member being configured to elastically deform when the shrinkage force of the edge of the packaging film is greater than a pre-tightening force of the resilient limiting member during the warm isostatic pressing process, thereby allowing the clamping unit to move in a direction towards the center of the solid-state battery.

5. The solid state battery gripper of claim 4, wherein, The bottom wall is provided with a first guide groove extending in a first direction and a second guide groove extending in a second direction, the first direction being perpendicular to the second direction, one of the at least two slidable clamping units being slidably fitted with the first guide groove and the other being slidably fitted with the second guide groove.

6. The solid state battery gripper of claim 5, wherein, The clamping unit comprises: an upper clamping plate; a lower clamping plate disposed opposite to the upper clamping plate; a fastener penetrating through the upper clamping plate and the lower clamping plate for adjusting the distance between the two, wherein, a clamping region for clamping the edge of the packaging film of the solid-state battery is formed between the upper clamping plate and the lower clamping plate, and a pre-tightening force is applied to the edge of the packaging film by tightening the fastener.

7. The solid state battery gripper of claim 6, wherein, The bottom of the lower clamping plate is provided with a guide protrusion, the guide protrusion being slidably fitted with the first guide groove or the second guide groove.

8. The solid state battery gripper of claim 7, wherein, The surface of the upper clamping plate facing the lower clamping plate is provided with a first cushion pad, and the surface of the lower clamping plate facing the upper clamping plate is provided with a second cushion pad, the first cushion pad and the second cushion pad being oppositely disposed and jointly forming the clamping region for directly contacting and clamping the edge of the packaging film of the solid-state battery.

9. The solid state battery gripper of claim 8, wherein, The bottom wall is further provided with a receiving groove, at least part of the resilient limiting member being accommodated in the receiving groove.

10. The solid state battery gripper of claim 9, wherein, The extension direction of the receiving groove is the same as that of the first guide groove, and the receiving groove and the first guide groove are in communication with each other.

11. A solid state battery, characterized by The solid-state battery clamp is manufactured according to any one of claims 1-9.

12. A battery manufacturing apparatus, characterized by comprising: A solid state battery clamp comprising the solid state battery clamp of any one of claims 1-9.

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