Pressurizing clamp, formation equipment and solid-state battery production line

Abstract

The utility model discloses a pressurizing clamp, formation equipment and a solid-state battery production line, and relates to the technical field of battery manufacturing. The pressurizing clamp is applied to formation equipment and comprises a push plate, a plurality of first guide parts are arranged on the peripheral side of the push plate, and each first guide part extends in the first direction and is movably connected with the push plate; the linear driving part is provided with an execution end capable of linearly moving in the first direction, and the execution end is fixedly connected with the middle position of the push plate; and the lantern ring assembly is arranged at the execution end in a sleeving mode and fixedly connected with the push plate, and the outer diameter of the lantern ring assembly is increased in the direction from the execution end to the push plate. According to the utility model, enough pressure can be provided in the formation process of the solid-state battery cell, so that each position of the solid-state battery cell is uniformly stressed, and the formation effect is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of battery manufacturing, in particular to a pressurizing fixture, formation equipment and a solid-state battery production line. Background Art

[0002] In the process of preparing batteries, it is necessary to use formation equipment to process the battery cells. By charging and discharging the battery cells, it is ensured that the active substances on the surface of the positive and negative electrodes are fully activated. The structure of the formation equipment includes a pressurized formation fixture, and during the formation process, the battery cells are placed on the pressurized formation fixture.

[0003] At present, solid-state battery cells have very high pressure requirements in the formation process. However, in the existing pressurized formation fixture, if the execution end of the driving member is arranged along the periphery of the push plate, the thrust acting on the push plate will be too dispersed; if the execution end of the driving member is arranged corresponding to the middle position of the push plate, the thrust acting on the push plate will be too concentrated. The above two methods will cause uneven force at various positions of the solid-state battery cell, and the pressure of the pressurized formation fixture cannot meet the formation requirements of the solid-state battery cell, which will cause poor formation effect of the solid-state battery cell. Utility Model Content

[0004] The utility model aims to solve at least one of the technical problems existing in the prior art. To this end, the utility model proposes a pressurizing fixture, a formation device and a solid-state battery production line, which can provide sufficient pressure during the formation process of the solid-state battery cell, so that each position of the solid-state battery cell is evenly stressed and the formation effect is improved.

[0005] The first embodiment of the utility model provides a pressurizing fixture, which is applied to a chemical formation device and includes:

[0006] A push plate, a plurality of first guide members are provided on its peripheral side, each of the first guide members extends along a first direction and is movably connected to the push plate;

[0007] A linear drive member having an actuating end capable of linearly moving along a first direction, wherein the actuating end is fixedly connected to a middle position of the push plate;

[0008] The collar assembly is sleeved on the execution end and fixedly connected to the push plate. The outer diameter of the collar assembly increases along the direction from the execution end to the push plate.

[0009] According to the pressurizing clamp of the embodiment of the first aspect of the utility model, at least the following beneficial effects are achieved: the execution end of the linear driving member is connected to the middle position of the push plate, so that the driving force can be concentrated on the middle position of the push plate, thereby solving the problem in the prior art that the thrust acting on the push plate is too dispersed and cannot be concentrated on the position of the solid-state battery cell; moreover, a sleeve assembly is provided at the middle position of the push plate, the sleeve assembly is sleeved on the outer periphery of the execution end, and the outer diameter of the sleeve assembly increases along the direction from the execution end to the push plate, so that the connection effect between the execution end and the push plate can be improved, and the execution end can be prevented from being easily bent and deformed. At the same time, the driving force of the execution end can be diffused toward the periphery along the connection point between the execution end and the push plate, so that the driving force can be concentrated on the position of the solid-state battery cell while being evenly diffused to various positions of the solid-state battery cell, so that the solid-state battery cell is subjected to uniform force during the formation process, and the efficiency of the pressure of the push plate acting on the solid-state battery cell can be improved, thereby improving the formation effect on the solid-state battery cell.

[0010] A plurality of first guide members are arranged on the periphery of the push plate, which can enable the push plate to move smoothly along the extension direction of the first guide members, avoid the push plate from deviating, and improve the accuracy of the pressure of the push plate acting on the solid-state battery cell.

[0011] In some embodiments of the present invention, the collar assembly includes a plurality of coaxially arranged collar bodies, and the outer diameters of the plurality of collar bodies increase along a direction from the linear drive member to the push plate.

[0012] In some embodiments of the present invention, a groove is provided in the middle of the push plate, an opening of the groove is open toward one side of the first direction, and the collar assembly is at least partially located in the groove.

[0013] In some embodiments of the present invention, the collar assemblies are provided in plurality and are arranged in an array about the middle position of the groove, and the linear drive members are arranged in a one-to-one correspondence with the collar assemblies.

[0014] In some embodiments of the present utility model, a plurality of first guide sleeves are provided on the peripheral side of the push plate, and a plurality of the first guide members are correspondingly inserted into the plurality of the first guide sleeves;

[0015] And / or, the push plate comprises:

[0016] At least two plates are provided and spaced apart along a first direction;

[0017] A rib plate is vertically connected to all the plate bodies, and a plurality of rib plates are provided and arranged crosswise to form a cavity.

[0018] In some embodiments of the utility model, the pressurizing clamp also includes a fixed seat, two of which are provided and spaced apart along the first direction, the push plate is located between the two fixed seats, and the opposite ends of each of the first guide members are respectively fixedly connected to the two fixed seats.

[0019] In some embodiments of the utility model, the pressure clamp also includes a clamping plate and a second guide member, wherein a plurality of the clamping plates are provided and are spaced apart along the first direction, a plurality of the clamping plates and the groove are arranged opposite to each other along the first direction, a plurality of the second guide members are arranged along the peripheral side of the clamping plate, each of the second guide members extends along the first direction and is passed through the push plate and all the clamping plates, and the opposite ends of each of the second guide members are respectively fixedly connected to the two fixing seats.

[0020] In some embodiments of the present invention, a buffer assembly is provided between any two adjacent clamping plates.

[0021] A second embodiment of the present invention provides a chemical formation device, which includes the pressurizing fixture as described in the first embodiment.

[0022] The formation equipment according to the embodiment of the second aspect of the utility model has at least the following beneficial effects: the pressure clamp of the above structure is used in the formation equipment, which can provide sufficient pressure for the solid-state battery cell during the formation process, so that each position of the solid-state battery cell is subjected to uniform force, thereby improving the formation effect of the solid-state battery cell.

[0023] A third aspect of the present invention provides a solid-state battery production line, which includes the formation equipment as described in the second aspect of the present invention.

[0024] The solid-state battery production line according to the third aspect of the embodiment of the utility model has at least the following beneficial effects: the use of the formation equipment of the above structure in the solid-state battery manufacturing process can improve the formation effect of the solid-state battery cells, thereby ensuring the good manufacturing quality of the solid-state battery.

[0025] Other features and advantages of the utility model will be described in the following description, and partly become apparent from the description, or understood by practicing the utility model. The purpose and other advantages of the utility model can be realized and obtained by the structures specifically pointed out in the description, claims and drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 It is a schematic diagram of the three-dimensional structure of a pressurizing clamp provided according to an embodiment of the first aspect of the utility model;

[0027] Figure 2is a cross-sectional schematic diagram of a pressurizing clamp provided according to an embodiment of the first aspect of the utility model;

[0028] Figure 3 yes Figure 2 A magnified schematic diagram of part A;

[0029] Figure 4 is a schematic diagram of the three-dimensional structure of the pressurizing clamp provided in accordance with the embodiment of the first aspect of the utility model from another perspective;

[0030] Figure 5 yes Figure 4 A magnified schematic diagram of part B;

[0031] Figure 6 It is a schematic diagram of the three-dimensional structure of the push plate in the pressurizing clamp provided in accordance with the embodiment of the first aspect of the utility model.

[0032] Figure numerals: 100, linear drive member; 110, execution end; 210, first fixed seat; 220, second fixed seat; 300, push plate; 301, groove; 310, plate body; 320, rib plate; 410, first guide member; 420, second guide member; 500, ring assembly; 511, first ring body; 512, second ring body; 513, third ring body; 514, fourth ring body; 515, fifth ring body; 600, clamping plate; 700, chain; 800, position sensor; 900, buffer assembly. DETAILED DESCRIPTION

[0033] The embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and cannot be understood as limiting the present invention.

[0034] In the description of the present invention, it is to be understood that a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of the present invention, unless otherwise specified, "plurality" means two or more.

[0035] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "connected" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0036] Solid-state lithium metal battery is a new type of battery that uses a solid electrolyte to replace the separator and liquid electrolyte used in traditional lithium-ion batteries, allowing traditional anodes such as graphite or silicon to be replaced by lithium metal anodes. The energy density of lithium metal anodes is higher than that of traditional anodes, allowing the battery to store more energy in the same volume.

[0037] The battery formation process is an important process step in the manufacturing process of solid-state batteries. Its purpose is to activate the chemical reaction inside the battery through the first charging process, form a stable SEI film (Solid Electrolyte Interphase), remove undesirable substances, and balance the voltage difference inside the battery. The lithium-ion battery is transformed from a "pile of materials" to a stable "electrochemical system", thereby improving the battery's capacity, performance and stability.

[0038] In the process of preparing the battery, it is necessary to use a formation device to perform a formation treatment on the battery cell. By charging and discharging the battery cell, it is ensured that the active substances on the surface of the positive and negative electrodes are fully activated. The structure of the formation equipment includes a chassis, a pressurized formation fixture and a heating and temperature control device, wherein the heating and temperature control device is used to adjust the temperature of the battery cell during the formation process, and the pressurized formation fixture includes a linear drive, a fixed seat, a push plate and a plurality of clamping plates arranged side by side. During the formation process, the battery cell is placed on the clamping plate and fixed. The push plate moves linearly relative to the fixed seat under the driving action of the linear drive, and a certain thrust is applied to all the clamping plates, so that all the clamping plates move smoothly relative to the fixed seat and move close to each other, thereby completing the pressurized formation of the battery cell.

[0039] At present, solid-state battery cells have very high pressure requirements in the formation process. However, in the existing pressurized formation fixture structure, if the execution end of the driving member is arranged along the periphery of the push plate, the thrust acting on the push plate will be too dispersed; if the execution end of the driving member is arranged corresponding to the middle position of the push plate, the thrust acting on the push plate will be too concentrated. The above two methods will cause uneven force at various positions of the solid-state battery cell, and the pressure of the pressurized formation fixture cannot meet the formation requirements of the solid-state battery cell, which will cause the formation effect of the solid-state battery cell to deteriorate, seriously affecting the quality of the solid-state battery.

[0040] Based on the above problems, the utility model provides a pressurizing clamp, formation equipment and solid-state battery production line, which can provide sufficient pressure during the formation process of solid-state battery cells, so that each position of the solid-state battery cells is subjected to uniform force, thereby improving the formation effect of the solid-state battery cells, which is beneficial to improving the manufacturing quality of solid-state batteries.

[0041] Reference below Figures 1 to 6The present invention describes a pressurized fixture, a formation device, and a solid-state battery production line provided according to an embodiment of the present invention.

[0042] like Figures 1 to 6 As shown, the pressurized clamp according to the embodiment of the first aspect of the utility model can be applied to the formation equipment. The function of the pressurized clamp is to provide fixed support for the solid-state battery cell and provide a certain pressure to the solid-state battery cell during the formation process.

[0043] The pressurizing fixture has a first direction, a second direction and a third direction, wherein the first direction, the second direction and the third direction are perpendicular to each other. In this embodiment, it is assumed that the first direction is the up-down direction, the second direction is the left-right direction, and the third direction is the front-back direction.

[0044] The structure of the pressurizing fixture includes a push plate 300 , a linear drive member 100 , a collar assembly 500 and a clamping plate 600 .

[0045] In some examples, a groove 301 is provided in the middle of the push plate 300, and the opening of the groove 301 is open to one side in the first direction. It is understandable that the shape of the groove 301 is not limited and can be set according to actual conditions. In some examples, if the push plate 300 is a square plate, the groove 301 is square when viewed along the first direction; in other examples, if the push rod is a circular plate, the groove 301 is circular when viewed along the first direction.

[0046] In this embodiment, the lower surface of the push plate 300 is concave to form a groove 301, and the opening of the groove 301 is open downward. When viewed from the up and down direction, the groove 301 is square, and when viewed from the front and back direction, the groove 301 is an isosceles trapezoid.

[0047] In other examples, the groove 301 is not provided in the middle of the push plate 300 , and the middle and peripheral positions of the push plate 300 are flush.

[0048] A plurality of first guide members 410 are disposed around the push plate 300 , each of which extends along a first direction and is movably connected to the push plate 300 . The first guide members 410 can guide the push plate 300 , thereby increasing the movement stability of the push plate 300 .

[0049] It can be understood that, in some examples, each first guide member 410 is an optical axis, and a guide hole is provided on the push plate 300 corresponding to each first guide member 410, so that the outer circumference of the optical axis and the inner circumference of the guide hole are in sliding contact. Of course, multiple first guide sleeves can also be provided on the peripheral side of the push plate 300, and multiple first guide members 410 are correspondingly inserted into the multiple first guide sleeves. Specifically, each first guide sleeve has a guide hole, the axis of the guide hole extends along the first direction, and the inner circumference of the guide hole can be slidably connected with the outer circumference of the first guide member 410.

[0050] In other examples, each first guide member 410 is a guide rail, and a plurality of sliders are disposed on the push plate 300 . The plurality of sliders are disposed in a one-to-one correspondence with the plurality of first guide members 410 , and the sliders are slidably connected to the first guide members 410 .

[0051] If the push plate 300 is a circular plate, the plurality of first guide members 410 are evenly arranged around the circumference of the push plate 300. If the push plate 300 is a square plate, the plurality of first guide members 410 are respectively arranged at the four corners of the push plate 300. Specifically, the plurality of first guide members 410 are arranged in an array.

[0052] The linear drive member 100 has an execution end 110, which is configured to be able to move linearly along a first direction, and the execution end 110 is fixedly connected to the middle position of the push plate 300. In this embodiment, the linear drive member 100 is located on the lower side of the push plate 300, and the execution end 110 is located in the groove 301 of the push plate 300. When the linear drive member 100 is working, the execution end 110 can drive the push plate 300 to move along the up and down directions, so that the push plate 300 can apply pressure to or release pressure on the solid-state battery cell. It can be understood that the linear drive member 100 can be a linear drive device such as an electric cylinder, a pneumatic cylinder, or an oil cylinder, and the movable rod of the linear drive member 100 is the execution end 110, which is connected to the push plate 300 by bolts.

[0053] In the case where the push plate 300 is provided with a groove 301, the collar assembly 500 is at least partially located in the groove 301 of the push plate 300, the collar assembly 500 is sleeved on the execution end 110 of the linear drive member 100, the inner circumference of the collar assembly 500 contacts the outer circumference of the execution end 110, and the end of the collar assembly 500 away from the linear drive member 100 is fixedly connected to the push plate 300 by bolts. In addition, the outer diameter of the collar assembly 500 increases along the direction from the execution end 110 to the push plate 300, that is, the outer diameter of the side of the collar assembly 500 close to the push plate 300 is larger than the side of the collar assembly 500 away from the push plate 300.

[0054] When the push plate 300 does not have the groove 301 , the end surface of the collar assembly 500 close to the push plate 300 is directly connected to the middle surface of the push plate 300 , and the collar assembly 500 is sleeved on the execution end 110 .

[0055] Specifically, the structure of the ring assembly 500 includes a plurality of ring bodies, which are coaxially arranged, and the axis of each ring body extends along a first direction and overlaps with each other, and the outer diameters of the plurality of ring bodies increase along the direction from the linear drive member 100 to the push plate 300.

[0056] It is understandable that the function of the groove 301 provided in the push plate 300 is to accommodate the collar assembly 500, and it can also reduce the weight of the push plate 300. In some examples, the entire collar assembly 500 is disposed in the groove 301. In other examples, the end of the collar assembly 500 away from the push plate 300 is located outside the groove 301. In this embodiment, a plurality of collar bodies are integrally formed, and the overall structure is a circular step. Of course, a plurality of collar bodies can be fixedly connected by bolt connection. The collar body can be made of metal material such as iron. The number of collar bodies is selected according to actual conditions and is not specifically limited here. The collar body can be a stepped cylindrical structure or a circular ring structure.

[0057] In some examples, the plurality of collar bodies may be sequentially arranged along the first direction. In other examples, the plurality of collar bodies may be sequentially arranged along the radial direction of the execution end 110 to form a layered structure.

[0058] In this embodiment, if Figures 1 to 3 As shown, the collar assembly 500 includes an inner collar assembly and an outer collar assembly. The inner collar assembly is sleeved on the execution end 110, and the outer collar assembly is sleeved on the inner collar assembly. The inner circumference of the outer collar assembly contacts the outer circumference of the inner collar assembly.

[0059] The inner ring assembly includes a fourth ring body 514 and a fifth ring body 515 , and the outer ring assembly includes a first ring body 511 , a second ring body 512 and a third ring body 513 .

[0060] The axial cross section of the fourth collar body 514 is T-shaped, and the middle position of the fourth collar body 514 is fixedly connected to the execution end 110. Specifically, the execution end 110 can be connected to the fourth collar body 514 through a threaded structure. The outer diameter of the fifth collar body 515 is greater than the outer diameter of the fourth collar body 514. The fifth collar body 515 is located above the fourth collar body 514 and is connected to the upper end surface of the fourth collar body 514 to form a three-step cylindrical structure. The fifth collar body 515 is connected to the push plate 300 by bolts. Of course, the fourth collar body 514 and the fifth collar body 515 can be integrally formed and coaxially connected to the execution end 110.

[0061] The outer diameter of the second ring body 512 is greater than the outer diameter of the first ring body 511, and smaller than the outer diameter of the third ring body 513. The third ring body 513, the second ring body 512 and the first ring body 511 are arranged in sequence from top to bottom and connected to form a three-step cylindrical structure. The third ring body 513 is fixedly connected to the push plate 300 by bolts. The first ring body 511, the second ring body 512 and the third ring body 513 are integrally formed.

[0062] It can be understood that the outer collar assembly can be divided into two symmetrically arranged half shells so that the outer collar assembly can be installed on the inner collar assembly in a wrapped state.

[0063] In some embodiments, the collar assembly 500 and the linear drive member 100 are both provided with one, the axis of the collar assembly 500 coincides with the axis of the execution end 110 , and they extend along the first direction and pass through the center position of the push plate 300 .

[0064] In other embodiments, there are multiple collar assemblies 500 and linear drive members 100, and the linear drive members 100 and collar assemblies 500 are arranged in a one-to-one correspondence in number, and each linear drive member 100 has a collar assembly 500 sleeved on the execution end 110. Moreover, the multiple collar assemblies 500 are arranged in an array at the middle position of the groove 301.

[0065] like Figure 1 , Figure 2 and Figure 4 As shown, in this embodiment, the number of the collar assembly 500 and the number of the linear drive member 100 are both two, and the two collar assemblies 500 are arranged at intervals along the left-right direction and symmetrically arranged about the middle position of the groove 301. Moreover, the two linear drive members 100 are also arranged symmetrically about the middle position of the groove 301.

[0066] A plurality of clamping plates 600 are provided, and the plurality of clamping plates 600 are arranged at a certain interval along the first direction, and the plurality of clamping plates 600 are arranged opposite to the groove 301 along the first direction. Specifically, the linear drive member 100 is located on one side of the push plate 300 in the first direction, and all the clamping plates 600 are located on the other side of the push plate 300 in the first direction. The centers of all the clamping plates 600 and the center of the push plate 300 are located on the same straight line extending along the first direction.

[0067] It is understandable that the clamping plate 600 has a clamp, and the function of the clamp is to fix the solid-state battery cell on the clamping plate 600. When the linear drive member 100 is running, the push plate 300 moves upward under the driving action of the execution end 110, and applies a thrust to all the clamping plates 600, so that all the clamping plates 600 move in the up and down direction, so that the spacing between all the clamping plates 600 is reduced to a certain extent, and at the same time, the solid-state battery cells on the clamping plates 600 are subjected to pressure.

[0068] A groove 301 is provided on the push plate 300, which can reduce the distance between the force application point of the execution end 110 on the push plate 300 and the clamping plate 600. The clamping plate 600 and the groove 301 are arranged relative to each other in the first direction, so that the driving force of the linear drive member 100 can be concentrated on the clamping plate 600, thereby improving the efficiency of the pressure acting on the solid-state battery cell; moreover, the setting of the ring assembly 500 can prevent the middle position of the push plate 300 from being easily deformed, thereby ensuring that the push plate 300 has high rigidity.

[0069] The push plate 300 may be a solid structure or a hollow structure.

[0070] In some examples, the structure of the push plate 300 includes a plate body 310 and a rib plate 320. There are at least two plate bodies 310, and all the plate bodies 310 are arranged at a certain interval along the first direction. There are multiple rib plates 320, and each rib plate 320 is vertically arranged and fixedly connected to all the plate bodies 310. Multiple rib plates 320 are arranged crosswise to form a cavity.

[0071] like Figure 6 As shown, in a specific embodiment, the number of plate bodies 310 is three, and they are arranged at intervals along the first direction (i.e., the up-down direction), and the plurality of ribs 320 are arranged in a criss-cross pattern to form a plurality of cavities of different sizes, and the openings of the cavities can be opened upward. Among them, the ribs 320 extending along the third direction are set as longitudinal plates, and the ribs 320 extending along the second direction are set as transverse plates. The number of transverse plates is three, and the number of longitudinal plates is seven. All transverse plates are symmetrically arranged about the center position of the push plate 300, and all longitudinal plates are symmetrically arranged about the center of the push plate 300. Of course, the angle at which any two ribs 320 are cross-connected is not limited to 90°.

[0072] It is understandable that since the solid-state battery cell has high requirements on the output force of the linear drive component 100 during the formation process, in order to ensure a good formation effect of the solid-state battery cell, in order to prevent the push plate 300 from being deformed due to its small thickness, and at the same time, to avoid the problem of excessive output force loss of the linear drive component 100 caused by the push plate 300 being too thick, the push plate 300 adopts a hollow structure composed of two or more plate bodies 310 and multiple rib plates 320, which can ensure the rigidity of the push plate 300, make the push plate 300 not easily deformed due to force, and can reduce the weight of the push plate 300 and reduce the output force loss of the linear drive component 100.

[0073] In some embodiments, Figure 1 , Figure 2 and Figure 4 As shown, the pressurizing fixture further includes a fixing seat, wherein two fixing seats are provided, the two fixing seats are arranged along the first direction at a certain interval, and the push plate 300 is located between the two fixing seats, and the opposite ends of each first guide member 410 are fixedly connected to the two fixing seats respectively.

[0074] In this embodiment, the two fixed seats are respectively set as the first fixed seat 210 and the second fixed seat 220, the first fixed seat 210 is located on the lower side of the push plate 300, the second fixed seat 220 is located on the upper side of the push plate 300, all the clamping plates 600 are located between the push plate 300 and the second fixed seat 220, and the linear drive member 100 is installed on the first fixed seat 210 by bolts.

[0075] It is understandable that the first fixing seat 210 and the second fixing seat 220 are used to provide installation and fixing for the linear drive member 100 and the first guide member 410, so as to facilitate the disassembly and assembly of the pressurizing fixture as a whole in the chassis of the formation equipment. The shapes of the first fixing seat 210 and the second fixing seat 220 are not limited. Of course, it is not excluded that in other embodiments, the linear drive member 100 and the first guide member 410 are directly installed in the chassis.

[0076] Further, such as Figure 1 , Figure 2 , Figure 4 and Figure 5 As shown, the pressurizing fixture further includes a second guide member 420. Among them, a plurality of second guide members 420 are arranged along the peripheral side of the clamping plate 600, each second guide member 420 extends along the first direction, and each second guide member 420 penetrates the push plate 300 and all the clamping plates 600, and the opposite ends of each second guide member 420 are fixedly connected to two fixing seats respectively.

[0077] Specifically, if the clamping plate 600 is a square plate, four second guide members 420 may be provided, and they are respectively arranged at the four corners of the clamping plate 600. If the clamping plate 600 is a circular plate, three or more second guide members 420 may be provided, and they are evenly arranged around the circumference of the clamping plate 600. The second guide member 420 may be an optical axis, and the clamping plate 600 may be provided with a guide hole or a sleeve with a guide hole. One end of the second guide member 420 is fixedly connected to the first fixed seat 210, and the other end of the second guide member 420 passes through the through hole provided at the groove 301 of the push plate 300, and is fixedly connected to the second fixed seat 220. All the clamping plates 600 are installed on the second guide member 420 in a stacked manner, and all the clamping plates 600 can move linearly relative to the second guide member 420.

[0078] It is understandable that the second guide 420 is provided so that all the clamping plates 600 can move smoothly along the extension direction of the second guide 420, thereby preventing the clamping plates 600 from being offset. In the case where the second guide 420 is provided, the size of the clamping plates 600 can be set smaller than that of the push plate 300, and the area of ​​the clamping plates 600 can be less than or equal to the area of ​​the corresponding groove 301 of the push plate 300. Of course, it is not excluded that in other embodiments, all the clamping plates 600 and the push plate 300 are slidably connected to the first guide 410.

[0079] In addition, a connecting piece is provided between the push plate 300 and all the clamping plates 600, and the connecting piece may be a belt, a chain 700, a connecting rod, etc. It is understandable that the function of the connecting piece is to establish a connection relationship between any two clamping plates 600, and the push plate 300 establishes a connection relationship with all the clamping plates 600. Then, in the process of the push plate 300 moving downward and approaching the first fixing seat 210, due to the tension of the connecting piece, all the clamping plates 600 can be prompted to move, and the distance between any two adjacent clamping plates 600 becomes larger, which is convenient for taking and placing the solid-state battery cells on the clamping plates 600.

[0080] In this embodiment, if Figure 1 , Figure 2 , Figure 4 and Figure 5 As shown, the connecting member is a chain 700, which extends in a first direction, one end of the chain 700 is fixedly connected to the push plate 300, and the other end of the chain 700 is fixedly connected to the uppermost clamping plate 600, and the remaining clamping plates 600 between the uppermost clamping plate 600 and the push plate 300 are also fixedly connected to the chain 700. In order to ensure that all the clamping plates 600 are evenly stressed during the pulling process, four chains 700 can be provided, and they are respectively provided for the four corners of the clamping plate 600.

[0081] It is understandable that the use of the chain 700 as a connector can ensure that the spacing between each clamping plate 600 is consistent, and avoid the situation where the spacing between some clamping plates 600 is too small to facilitate the removal of solid-state battery cells. Under the thrust of the push plate 300, all the clamping plates 600 will move closer to each other, making the spacing between any two adjacent clamping plates 600 smaller. At this time, the chain 700 folds due to its flexible characteristics, allowing the push plate 300 and all the clamping plates 600 to move closer to each other. Under the pulling force of the push plate 300 and the chain 700, all the clamping plates 600 will move away from each other, making the spacing between any two adjacent clamping plates 600 larger. At this time, the chain 700 will be straightened.

[0082] In some embodiments, Figure 4 and Figure 5 As shown, a buffer assembly 900 is provided between any two adjacent clamping plates 600. The function of the buffer assembly 900 is to provide buffering for the two clamping plates 600 approaching each other. The buffer assembly 900 can be a spring, and the opposite ends of the spring are respectively connected to the two adjacent clamping plates 600. Of course, it is not excluded that the buffer assembly 900 is a buffer rubber block.

[0083] In this embodiment, if Figure 5 As shown, the buffer assembly 900 includes a spring and a positioning rod. For two adjacent clamping plates 600, one of the clamping plates 600 is fixedly connected to a positioning rod, the spring is sleeved on the positioning rod, and the other clamping plate 600 is provided with a positioning hole. When the two clamping plates 600 are approaching each other, the positioning rod moves along the positioning hole, and the opposite ends of the spring respectively abut against the surfaces of the two clamping plates 600, so that the spring is compressed by force, which plays a buffering role on the clamping plates 600, and prevents the clamping plates 600 from having a strong collision under the action of thrust.

[0084] It is understandable that after the two clamping plates 600 are fully pulled apart, the positioning rod can be disengaged from the positioning hole or can remain inserted into the positioning hole. Each clamping plate 600 is provided with a buffer assembly 900 on both sides in the second direction. When viewed along the first direction, any two adjacent buffer assemblies 900 are arranged at intervals along the third direction, so that all buffer assemblies 900 on the pressurizing fixture are arranged in a staggered manner.

[0085] In addition, if Figure 2 and Figure 4As shown, the pressurizing fixture also includes a position sensor 800. The number of the position sensors 800 is at least two, and the function of the position sensor 800 is to detect the movement position of the push plate 300 during the formation work. Specifically, a support rod is provided between the first fixed seat 210 and the second fixed seat 220, and the position sensor 800 is installed on the support rod. The position sensor 800 can be a photoelectric position sensor, preferably, a slot-type photoelectric switch is selected, and a sensor sheet is correspondingly provided on the push plate 300, and the sensor sheet can be an iron sheet.

[0086] It is understandable that when the push plate 300 is in linear motion, if the sensing sheet triggers one of the position sensors 800, the linear drive member 100 needs to stop working so that the push plate 300 stays at the set position. Figure 2 and Figure 4 As shown, four position sensors 800 are arranged on the support rod, which can detect whether the push plate 300 reaches one of the four set positions, so that the movement position of the push plate 300 can be accurately controlled.

[0087] In the pressurizing clamp provided in the embodiment of the first aspect of the utility model, since the execution end 110 of the linear drive member 100 is connected to the groove 301 of the push plate 300, the pushing force of the linear drive member 100 can be concentrated on the middle position of the push plate 300, which effectively solves the problem that the execution end 110 of the linear drive member 100 is distributed on the periphery of the push plate 300 in the prior art, resulting in the thrust acting on the push plate 300 being too dispersed and unable to be concentrated on the position of the solid-state battery cell.

[0088] On the basis of the above, a collar assembly 500 is further provided at the groove 301 of the push plate 300. The collar assembly 500 is sleeved on the outer periphery of the execution end 110. The outer diameter of the collar assembly 500 increases along the direction from the execution end 110 to the push plate 300. Therefore, the connection effect between the execution end 110 of the linear drive member 100 and the push plate 300 can be improved, and the middle position of the execution end 110 and the push plate 300 can be prevented from being easily bent and deformed. In addition, the driving force of the execution end 110 can be diffused toward the periphery along the connection point between the execution end 110 and the push plate 300, so that the linear drive member 100 can be easily bent and deformed. The driving force applied by 00 can be concentrated on the position of the solid-state battery cell, and at the same time, can be evenly diffused to various positions of the solid-state battery cell, so that the solid-state battery cell is evenly stressed during the formation process, and can improve the efficiency of the pressure of the push plate 300 acting on the solid-state battery cell, thereby improving the formation effect on the solid-state battery cell, and effectively solves the problem of the prior art that the execution end 110 of the linear drive member 100 is distributed at the center position of the push plate 300, resulting in excessive concentration of thrust on the push plate 300, causing uneven stress on other positions of the solid-state battery cell.

[0089] In addition, a plurality of first guide members 410 are provided on the periphery of the push plate 300, which can enable the push plate 300 to move smoothly along the extension direction of the first guide members 410, avoid the push plate 300 from being offset, and improve the accuracy of the pressure of the push plate 300 acting on the solid-state battery cell.

[0090] like Figures 1 to 6 As shown, the formation equipment according to the second embodiment of the utility model includes a chassis, a heating and temperature control device, and a pressurizing fixture as in the first embodiment. The pressurizing fixture is arranged in the chassis to fix and support the solid-state battery cell. The heating and temperature control device can provide a heating function and can adjust the temperature in the chassis so that the solid-state battery cell can be formed in an appropriate temperature environment.

[0091] It is understandable that the present embodiment mainly makes structural improvements to the pressurizing fixture in the formation equipment, and no improvements are proposed for other components of the formation equipment. Therefore, those skilled in the art should understand other structures and working principles of the formation equipment, which will not be specifically described here. Relative to the prior art, the present embodiment adopts the pressurizing fixture of the first aspect embodiment in the structure of the formation equipment, which can provide enough pressure for the solid-state battery cell during the formation process, so that each position of the solid-state battery cell is evenly stressed, thereby improving the formation effect of the solid-state battery cell, which is conducive to reducing the defective rate of the solid-state battery cell.

[0092] like Figures 1 to 6 As shown, the solid-state battery production line according to the third aspect embodiment of the utility model includes a formation equipment as in the second aspect embodiment.

[0093] It is understandable that in the solid-state battery manufacturing process, multiple processing steps are included, such as a rolling process, a formation process, a quality inspection process, etc., and each processing step corresponds to a corresponding device. This embodiment only optimizes the structure of the formation equipment in the solid-state battery production line, especially the pressurized clamp in the formation equipment, and does not propose improvement requirements for other equipment in the solid-state battery production line. Therefore, those skilled in the art should understand the remaining equipment structure and working principle of the solid-state battery production line, which will not be described here. This embodiment uses a formation equipment with the above-mentioned pressurized clamp structure in the solid-state battery manufacturing process, which can improve the formation effect of the solid-state battery cell, thereby ensuring the good manufacturing quality of the solid-state battery.

[0094] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "illustrative embodiments", "examples", "specific examples", or "some examples" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the utility model. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0095] Although the embodiments of the present invention have been shown and described, those skilled in the art will appreciate that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the claims and their equivalents.

Claims

1. Pressurized fixture, used in chemical forming equipment, characterized in that: include: A push plate (300) having a plurality of first guide members (410) disposed on its circumferential side, each of the first guide members (410) extending along a first direction and movably connected to the push plate (300); A linear drive member (100) having an actuating end (110) capable of linear movement along a first direction, the actuating end (110) being fixedly connected to a middle portion of the push plate (300); A collar assembly (500) is sleeved on the execution end (110) and fixedly connected to the push plate (300); the outer diameter of the collar assembly (500) increases in a direction from the execution end (110) toward the push plate (300).

2. The pressurizing fixture according to claim 1, characterized in that: The collar assembly (500) comprises a plurality of coaxially arranged collar bodies, and the outer diameters of the plurality of collar bodies increase along a direction from the linear drive member (100) to the push plate (300).

3. The pressurizing fixture according to claim 1 or 2, characterized in that: A groove (301) is provided in the middle of the push plate (300), the opening of the groove (301) is open to one side in the first direction, and the collar assembly (500) is at least partially located in the groove (301).

4. The pressurizing fixture according to claim 3, characterized in that: The collar assemblies (500) are provided in plurality and are arranged in an array about the middle position of the groove (301), and the linear drive members (100) are arranged in a one-to-one correspondence with the collar assemblies (500).

5. The pressurizing fixture according to claim 1, characterized in that: A plurality of first guide sleeves are provided on the peripheral side of the push plate (300), and a plurality of the first guide members (410) are passed through the plurality of the first guide sleeves in a one-to-one correspondence; And / or, the push plate (300) comprises: At least two plates (310) are provided and are spaced apart along a first direction; A rib plate (320) is vertically connected to all the plate bodies (310); a plurality of rib plates (320) are provided and are arranged in a cross-like manner to form a cavity.

6. The pressurizing fixture according to claim 3, characterized in that: It also includes a fixing seat, two of which are provided and spaced apart along the first direction, the push plate (300) is located between the two fixing seats, and the opposite ends of each first guide member (410) are respectively fixedly connected to the two fixing seats.

7. The pressurizing fixture according to claim 6, characterized in that: It also includes a clamping plate (600) and a second guide member (420), wherein a plurality of the clamping plates (600) are provided and are spaced apart along the first direction, and the plurality of the clamping plates (600) are arranged opposite to the groove (301) along the first direction, and a plurality of the second guide members (420) are arranged along the circumference of the clamping plate (600), and each of the second guide members (420) extends along the first direction and passes through the push plate (300) and all of the clamping plates (600), and the opposite ends of each of the second guide members (420) are fixedly connected to the two fixing seats respectively.

8. The pressurizing fixture according to claim 7, characterized in that: A buffer assembly (900) is provided between any two adjacent clamping plates (600).

9. A formation device, characterized in that: It comprises a pressurizing fixture as described in any one of claims 1 to 8.

10. Solid-state battery production line, characterized in that: Comprising the formation equipment as claimed in claim 9.

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