Battery cell hot-pressing device and battery production apparatus

Abstract

The present application relates to a battery cell hot-pressing device and a battery production apparatus. The battery cell hot-pressing device comprises a first hot-pressing assembly which comprises a first pressing plate and second pressing plates adjacent to the first pressing plate, wherein the first pressing plate and the second pressing plates are aligned to form a first hot-pressing surface so as to press and cover at least part of a first surface of a battery cell, and the first pressing plate and the second pressing plates can alternately ascend and descend relative to a first direction; and a second hot-pressing assembly, arranged opposite to the first hot-pressing assembly in the first direction and comprising a third pressing plate and fourth pressing plates adjacent to the third pressing plate, wherein the third pressing plate and the fourth pressing plates are aligned to form a second hot-pressing surface so as to press and cover at least part of a second surface of the battery cell, and the third pressing plate can ascend and descend in the first direction relative to the fourth pressing plates. The battery cell hot-pressing device of the present application can effectively improve the efficiency of feeding a battery cell to a hot-pressing station for hot-pressing shaping, thereby improving the production efficiency of battery cells.

Description

Battery cell hot pressing device and battery production equipment

[0001] Cross-reference to related applications

[0002] This application is based on the Chinese Patent Application No. 202421105537.X entitled "Battery cell hot pressing device and battery production equipment" filed on May 21, 2024, which is incorporated by reference in its entirety. TECHNICAL FIELD

[0003] The present application relates to the technical field of battery production, and in particular, to a battery cell hot pressing device and a battery production equipment. BACKGROUND

[0004] In the process of battery production, the positive electrode sheet, the negative electrode sheet and the separator film are processed into a battery cell by winding or stacking, and then the battery cell needs to be hot pressed and shaped to meet the quality requirements.

[0005] In the related art, the hot pressing device has structural defects. During the process of loading the battery cell onto the hot pressing station of the hot pressing device, the battery cell is prone to structural interference with the hot pressing plate of the hot pressing device, causing difficulty in loading the battery cell, and affecting the hot pressing efficiency of the battery cell.

[0006] SUMMARY

[0007] The present application aims to at least solve one of the technical problems existing in some cases. To this end, the present application provides a battery cell hot pressing device and a battery production equipment, which can improve the efficiency of loading the battery cell onto the hot pressing station for hot pressing and shaping, thereby improving the production efficiency of the battery cell.

[0008] In a first aspect, the present application provides a battery cell hot pressing device, comprising:

[0009] A first hot pressing assembly, comprising a first pressing plate and a second pressing plate disposed adjacent to the first pressing plate, the first pressing plate and the second pressing plate being combined to form a first hot pressing surface to hold and cover at least part of a first surface of the battery cell, the first pressing plate and the second pressing plate being capable of being alternately raised and lowered along a first direction;

[0010] A second hot pressing assembly, disposed opposite to the first hot pressing assembly along the first direction, comprising a third pressing plate and a fourth pressing plate disposed adjacent to the third pressing plate, the third pressing plate and the fourth pressing plate being combined to form a second hot pressing surface to hold and cover at least part of a second surface of the battery cell, the third pressing plate being capable of being raised and lowered relative to the fourth pressing plate along the first direction.

[0011] The battery cell hot pressing device according to the first aspect of the present application has at least the following beneficial effects:

[0012] The battery cell hot pressing device of the present application, by setting the first pressing plate and the second pressing plate on the first hot pressing assembly in a split type, and enabling the first pressing plate and the second pressing plate to alternately rise and fall along the first direction, at the same time, by setting the third pressing plate and the fourth pressing plate on the second hot pressing assembly in a split type, and enabling the third pressing plate to rise and fall along the first direction relative to the fourth pressing plate, the corresponding pressing plate can effectively avoid the movement interference with the battery cell carrying member during the battery cell feeding process, so that the battery cell can be smoothly fed to the hot pressing station, effectively improving the efficiency of feeding the battery cell to the hot pressing station for hot pressing and shaping, and further improving the production efficiency of the battery cell.

[0013] In some embodiments, the second pressing plate has two, and the two second pressing plates are respectively arranged on the opposite sides of the first pressing plate, and the first pressing plate and the two second pressing plates are spliced to form a first hot pressing surface covering the first surface of the battery cell.

[0014] In this way, on the one hand, the first pressing plate can smoothly avoid the movement interference with the carrying member on the battery cell when it is pressed to the battery cell alone on the two sides of the second pressing plate, further improving the feeding efficiency of the battery cell. On the other hand, each part on the first surface of the battery cell can be hot pressed and shaped, improving the hot pressing uniformity of the battery cell, and further improving the hot pressing efficiency of the battery cell.

[0015] In some embodiments, the first hot pressing assembly further comprises a first frame body, and all the second pressing plates are connected to the first frame body to be driven to rise and fall along the first direction by the first frame body, and the first pressing plate is also connected to the first frame body in a rising and falling manner.

[0016] In this way, all the second pressing plates can rise and fall synchronously with the first frame body, without configuring a separate driving member for each second pressing plate, saving material cost, and at the same time, the first frame body can also serve as a mounting support structure of the first pressing plate, facilitating the independent rising and falling action of the first pressing plate relative to the second pressing plate.

[0017] In some embodiments, the first hot pressing assembly further comprises a guide rail extending along the first direction, and the first frame body is slidingly installed on the guide rail.

[0018] In this way, the linearity of the first pressing plate and the second pressing plate driven by the first frame body in the rising and falling action along the first direction can be improved.

[0019] In some embodiments, the fourth pressing plate has two, and the two fourth pressing plates are respectively arranged on the opposite sides of the third pressing plate, and the third pressing plate and the two fourth pressing plates are spliced to form a second hot pressing surface covering the second surface of the battery cell.

[0020] In this way, on the one hand, the third pressing plate can smoothly avoid interference with the movement of the carrying member on the battery cell when the third pressing plate is pressed to the battery cell alone from the two sides of the fourth pressing plate, thereby further improving the feeding efficiency of the battery cell. On the other hand, each part on the second surface of the battery cell can be heat-pressed and shaped, thereby improving the heat-pressing uniformity of the battery cell and further improving the heat-pressing efficiency of the battery cell.

[0021] In some embodiments, the second heat-pressing assembly further comprises a second frame body, and all the fourth pressing plates are fixedly arranged on the second frame body, and the third pressing plate is further connected to the second frame body in a liftable manner.

[0022] In this way, the third pressing plate and the fourth pressing plate are conveniently arranged in space, and the second frame body can serve as a bearing support structure for the first heat-pressing assembly and the battery cell, thereby providing bearing for subsequent pressure shaping of the battery cell.

[0023] In some embodiments, the battery cell heat-pressing device further comprises a first flexible film arranged between the first heat-pressing assembly and the battery cell in a second direction intersecting the first direction, and the first pressing plate and the second pressing plate press and cover at least part of the first flexible film on the first surface of the battery cell after descending by a preset distance relative to the first direction.

[0024] In this way, the first pressing plate and the second pressing plate are connected to form a first heat-pressing surface, and the first flexible film is arranged between the first heat-pressing surface and the first surface of the battery cell, thereby effectively reducing the probability of indentation on the first surface of the battery cell, and further reducing the probability of adhesion between the first surface of the battery cell and the first pressing plate and / or the second pressing plate after heat-pressing of the battery cell. In this way, the heat-pressing quality and efficiency of the battery cell are improved.

[0025] In some embodiments, the battery cell heat-pressing device further comprises a first adjusting assembly for guiding the first flexible film to move in a preset direction to adjust the contact position between the first flexible film and the first heat-pressing surface.

[0026] In this way, the first adjusting assembly guides the first flexible film to move in the preset direction, thereby changing the position of the first flexible film corresponding to the first heat-pressing surface, which not only prolongs the service life of the first flexible film, but also effectively protects each battery cell, thereby reducing the probability of indentation on the first surface of the battery cell and the probability of adhesion between the battery cell and the first heat-pressing surface, and improving the consistency of the heat-pressing effect of multiple battery cells.

[0027] In some embodiments, the first adjusting assembly comprises a first unwinding roller, a first tensioning roller and a first winding roller arranged in sequence in the second direction, and the two ends of the first flexible film are connected to the first unwinding roller and the first winding roller, respectively, and the first flexible film is further wound around the first tensioning roller.

[0028] In this way, when the contact position of the first flexible film with the first hot pressing surface needs to be adjusted, the first winding roller can be driven to rotate, so that the first winding roller pulls the first flexible film to wind along the rotation direction of the first winding roller, so as to change the corresponding contact position of the first flexible film with the first hot pressing surface, thereby achieving the effect of adjusting the contact position of the first flexible film with the first hot pressing surface.

[0029] In some embodiments, the battery cell hot pressing device further comprises a second flexible film arranged between the second hot pressing assembly and the battery cell in a second direction intersecting the first direction, and the first pressing plate and the second pressing plate hold the battery cell between the first hot pressing surface and the second hot pressing surface after descending by a preset distance relative to the first direction, so that at least part of the second flexible film is held and covers the second surface of the battery cell.

[0030] In this way, on the one hand, the second hot pressing surface formed by splicing the third pressing plate and the fourth pressing plate does not directly contact the second surface of the battery cell, which can effectively reduce the probability of indentation on the second surface of the battery cell; on the other hand, the structural characteristics of the second flexible film can reduce the probability of adhesion between the second surface of the battery cell and the third pressing plate and / or the fourth pressing plate after the hot pressing of the battery cell is completed. In this way, the hot pressing quality and efficiency of the battery cell are improved.

[0031] In some embodiments, the battery cell hot pressing device further comprises a second adjusting assembly for guiding the second flexible film to move in a preset direction to adjust the contact position of the second flexible film with the second hot pressing surface.

[0032] In this way, by guiding the second flexible film to move in a preset direction through the second hot pressing assembly, the corresponding contact position of the second flexible film with the second hot pressing surface is changed, which not only prolongs the service life of the second flexible film, but also effectively protects each battery cell with the second flexible film, reduces the probability of indentation on the second surface of the battery cell, and reduces the probability of adhesion between the battery cell and the second hot pressing surface, thereby improving the consistency of the hot pressing effect of multiple battery cells.

[0033] In some embodiments, the second adjusting assembly comprises a second unwinding roller, a second tensioning roller and a second winding roller arranged in sequence in the second direction, both ends of the second flexible film are connected with the second unwinding roller and the second winding roller, and the second flexible film is further wound around the second tensioning roller.

[0034] In this way, when the contact position of the second flexible film with the second hot pressing surface needs to be adjusted, the second winding roller can be driven to rotate, so that the second winding roller pulls the second flexible film to wind along the rotation direction of the second winding roller, so as to change the corresponding contact position of the second flexible film with the second hot pressing surface, thereby achieving the effect of adjusting the contact position of the second flexible film with the second hot pressing surface.

[0035] In a second aspect, the embodiments of the present application provide a battery production device, which comprises the battery cell hot-pressing device.

[0036] According to the battery production device of the second aspect of the present application, at least the following beneficial effects are achieved:

[0037] The battery production device of the embodiments of the present application, since being provided with the battery cell hot-pressing device, also has the same technical effects as the battery cell hot-pressing device, i.e., by setting the first pressing plate and the second pressing plate on the first hot-pressing assembly in a split type and enabling the first pressing plate and the second pressing plate to alternately ascend and descend along the first direction, and by setting the third pressing plate and the fourth pressing plate on the second hot-pressing assembly in a split type and enabling the third pressing plate to ascend and descend along the first direction relative to the fourth pressing plate, the corresponding pressing plates can effectively avoid the movement interference with the battery cell carrying member during the battery cell feeding process, so that the battery cell can be smoothly fed to the hot-pressing station, effectively improving the efficiency of feeding the battery cell to the hot-pressing station for hot-pressing and shaping, and further improving the production efficiency of the battery cell and the production efficiency of the battery.

[0038] 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 specific embodiments of the present application can be implemented according to the content of the description, 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 will specifically describe the embodiments of the present application. BRIEF DESCRIPTION OF DRAWINGS

[0039] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the following will briefly introduce the drawings needed to be used in the embodiments of the present application. Obviously, the drawings described below are only some embodiments of the present application, and for those skilled in the art, other drawings can also be obtained without creative labor. In the drawings:

[0040] Fig. 1 is a structural schematic view of the battery cell hot-pressing device of the embodiments of the present application.

[0041] Fig. 2 is a structural schematic view of the battery cell hot-pressing device of the embodiments of the present application from another perspective.

[0042] Fig. 3 is a partial structural schematic view of the battery cell hot-pressing device of the embodiments of the present application.

[0043] Fig. 4 is a structural schematic view of the battery cell hot-pressing device of the embodiments of the present application in an initial state.

[0044] Fig. 5 is a structural schematic view of the battery cell hot-pressing device of the embodiments of the present application cooperating with the battery cell.

[0045] Explanation of reference signs: first hot pressing assembly 100; first pressing plate 110; second pressing plate 120; first hot pressing surface 130; first frame body 140; guide rail 150; first driving member 160; second hot pressing assembly 200; third pressing plate 210; fourth pressing plate 220; second hot pressing surface 230; second frame body 240; second driving member 250; first flexible film 300; first adjusting assembly 400; first unwinding roller 410; first tensioning roller 420; first winding roller 430; second flexible film 500; second adjusting assembly 600; second unwinding roller 610; second tensioning roller 620; second winding roller 630; battery cell 700; first surface 710; second surface 720; first direction X; second direction Y. DETAILED DESCRIPTION

[0046] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application.

[0047] In the description of the present application, if these terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential" appear, these terms indicate the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the indicated device or element must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the present application.

[0048] In addition, if these terms "first", "second" appear, these terms are only for the purpose of description, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features limited by "first", "second" can explicitly or implicitly include at least one of the features. In the description of the present application, if the term "multiple" appears, the meaning of "multiple" is at least two, for example, two, three, etc., unless otherwise specifically limited.

[0049] In the present application, unless specifically defined otherwise, if there is a description of "mounting", "connection", "linking", "fixing" and the like, these terms should be interpreted broadly. For example, it can be fixed connection, or detachable connection, or integrated; it can be mechanical connection, or electrical connection; it can be direct connection, or indirect connection through intermediate medium; it can be the internal communication of two elements or the interaction relationship between two elements, unless otherwise specifically defined. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0050] In the present application, unless specifically defined otherwise, if there is a description of "mounting", "connection", "linking", "fixing" and the like, these terms should be interpreted broadly. For example, it can be fixed connection, or detachable connection, or integrated; it can be mechanical connection, or electrical connection; it can be direct connection, or indirect connection through intermediate medium; it can be the internal communication of two elements or the interaction relationship between two elements, unless otherwise specifically defined. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0051] It should be noted that if an element is referred to as "fixed to" or "disposed on" another element, it can be directly on the other element or there can be a middle element. If an element is considered to be "connected" to another element, it can be directly connected to the other element or there can be a middle element. If present, the terms "vertical", "horizontal", "up", "down", "left", "right" and similar expressions used in the present application are for illustrative purposes only and do not represent the only implementation.

[0052] At present, from the development of market situation, the application of battery is more and more widely. The battery is not only applied to the energy storage power supply system of water power, fire power, wind power and solar power station, but also widely applied to electric bicycles, electric motorcycles, electric vehicles and other electric vehicles, military equipment, aerospace and other fields. With the continuous expansion of the application field of battery, the demand of its market is also increasing.

[0053] The battery is composed of one or more battery monomers. For each battery, the plurality of battery monomers constituting it can be connected in series or in parallel or in mixed connection. Among them, mixed connection means that there are series connection and parallel connection in the plurality of battery monomers.

[0054] A battery cell is the smallest unit that constitutes a battery, and in the structure of the battery cell, a casing, an electrolyte, and an electrode assembly are included. The electrode assembly is a component in which an electrochemical reaction occurs in the battery cell, and includes a positive electrode sheet, a negative electrode sheet, and a separator. One or more electrode assemblies can be included in the casing, and the electrode assembly is mainly formed by winding or stacking the positive electrode sheet and the negative electrode sheet, and a separator is generally disposed between the positive electrode sheet and the negative electrode sheet.

[0055] The casing is a structure with one end open and hollow inside, and the electrode assembly is disposed inside the casing. An end cover is disposed at the opening of the casing, and the end cover is closed to the opening to form the internal environment of the battery cell. Of course, the end cover and the casing can also be integrated. Specifically, the end cover and the casing can form a common connecting surface before other components enter the casing. When it is necessary to seal the inside of the casing, the end cover is closed to the casing. The casing can be various shapes and sizes, such as a cuboid, a cylinder, a hexagonal prism, etc. Specifically, the shape of the casing can be determined according to the specific shape and size of the electrode assembly. The material of the casing can be various, such as copper, iron, aluminum, stainless steel, aluminum alloy, plastic, etc. The embodiments of the present application do not make special restrictions on this.

[0056] In the battery production process, the positive electrode sheet, the negative electrode sheet, and the separator film are processed into an electrode assembly in a winding or stacking manner. The electrode assembly can also be referred to as an electric core. Then, the electric core needs to be heat-pressed and shaped to meet the quality requirements.

[0057] When the electric core is heat-pressed and shaped, a carrying member is generally used to carry the electric core to a heat-pressing station. After the heat-pressing plate completely adheres and positions the electric core on the heat-pressing station, the feeding of the electric core is completed.

[0058] In order to reduce the probability that the carrying member directly abuts and places the electric core on the heat-pressing plate, causing the relative slipping and mispositioning of the multiple electrode sheets on the electric core, the carrying member needs to maintain the fixed action on the electric core before the heat-pressing plate is positioned and adhered to the surface of the electric core. However, due to the structural limitations of the existing heat-pressing device, the heat-pressing plate is difficult to be positioned and adhered to the surface of the electric core when the heat-pressing plate is positioned and adhered to the surface of the electric core, which causes the difficulty in feeding the electric core and affects the heat-pressing efficiency of the electric core.

[0059] Therefore, to solve the problem that the heat-pressing plate on the heat-pressing device is prone to interfere with the battery cell, causing difficulty in loading the battery cell and affecting the heat-pressing efficiency of the battery cell, one or more embodiments of the present application provide a battery cell heat-pressing device. The first pressing plate and the second pressing plate on the first heat-pressing assembly are arranged in a split manner, and the first pressing plate and the second pressing plate can be lifted alternately along the first direction. Meanwhile, the third pressing plate and the fourth pressing plate on the second heat-pressing assembly are arranged in a split manner, and the third pressing plate can be lifted along the first direction relative to the fourth pressing plate. In this way, the corresponding pressing plate can effectively avoid the movement interference with the battery cell carrying member during the loading of the battery cell, so that the battery cell can be loaded smoothly to the heat-pressing station, effectively improving the efficiency of loading the battery cell to the heat-pressing station for heat-pressing and shaping, and further improving the production efficiency of the battery cell.

[0060] Referring to FIGS. 1, 2, 3 and 4, FIG. 1 shows a schematic diagram of the overall structure of the battery cell heat-pressing device according to the present application, FIG. 2 shows a schematic diagram of the overall structure of the battery cell heat-pressing device according to the present application from another perspective, FIG. 3 shows a schematic diagram of the cooperation structure between the battery cell heat-pressing device and the battery cell when the battery cell is loaded, and FIG. 4 shows a schematic diagram of the structure of the battery cell heat-pressing device in the initial state. In FIG. 4, the battery cell has not yet entered the battery cell heat-pressing device.

[0061] The battery cell heat-pressing device according to the present application comprises a first heat-pressing assembly 100 and a second heat-pressing assembly 200.

[0062] The first heat-pressing assembly 100 comprises a first pressing plate 110 and a second pressing plate 120 arranged adjacent to the first pressing plate 110. The first pressing plate 110 and the second pressing plate 120 are combined to form a first heat-pressing surface 130 to press and cover at least part of a first surface 710 of the battery cell 700. The first pressing plate 110 and the second pressing plate 120 can be lifted alternately along a first direction X.

[0063] The second heat-pressing assembly 200 is arranged opposite to the first heat-pressing assembly 100 along the first direction X. The second heat-pressing assembly 200 comprises a third pressing plate 210 and a fourth pressing plate 220 arranged adjacent to the third pressing plate 210. The third pressing plate 210 and the fourth pressing plate 220 are combined to form a second heat-pressing surface 230 to press and cover at least part of a second surface 720 of the battery cell 700. The third pressing plate 210 can be lifted relative to the fourth pressing plate 220 along the first direction X.

[0064] It should be noted that, referring to FIGS. 2, 3 and 4, in the present application, the first direction X can be understood as the up-down direction of the battery cell heat-pressing device, i.e., the height direction thereof. The first surface 710 and the second surface 720 of the battery cell 700 are two opposite large surfaces of the battery cell 700, i.e., the upper surface and the lower surface of the battery cell 700, respectively.

[0065] In the present application, the first pressing plate 110 and the second pressing plate 120 on the first hot pressing assembly 100 can be but are not limited to rectangular plates, circular plates, etc., and the specific shape is not limited, and can be adaptively designed according to the shape of the battery cell 700 to be hot pressed.

[0066] In the first hot pressing assembly 100, the first pressing plate 110 can be connected to the driving end of the first driving member 160, which can be but is not limited to a direct driving structure such as a linear cylinder or a ball screw mechanism. It can be understood that the lifting movement of the first pressing plate 110 in the first direction X is driven by the first driving member 160.

[0067] In addition, the first hot pressing assembly 100 can be integrally connected to the output end of a press (not shown in the figure), or the second pressing plate 120 can be connected to the output end of the press, so that the lifting movement of the first pressing plate 110 in the first direction X and the lifting movement of the second pressing plate 120 in the first direction X can be driven by different driving members, so that the first pressing plate 110 and the second pressing plate 120 can be lifted alternately in the first direction X. Exemplarily, the first hot pressing assembly 100 is integrally connected to the output end of the press, and the press drives the first hot pressing assembly 100 to lift integrally in the first direction X.

[0068] It can be easily understood that, referring to FIG. 4, in the initial state of the battery cell hot pressing device of the present application, the first pressing plate 110 and the second pressing plate 120 on the first hot pressing assembly 100 are kept in the same height and flush, at this time, the first pressing plate 110 and the second pressing plate 120 are integrally spliced to form a first hot pressing surface 130, which can cover part or all of the first surface 710 of the battery cell 700.

[0069] In the second hot pressing assembly 200, the third pressing plate 210 and the fourth pressing plate 220 can be but are not limited to rectangular plates, circular plates, etc., and the specific shape is not limited, and can be adaptively designed according to the shape of the battery cell 700 to be hot pressed.

[0070] In the second hot pressing assembly 200, the third pressing plate 210 can be connected to the output end of the second driving member 250, which can be but is not limited to a linear driving structure such as a linear cylinder or a ball screw mechanism, and the lifting movement of the third pressing plate 210 in the first direction X is driven by the second driving member 250.

[0071] It can be easily understood that, referring to FIG. 4, in the initial state of the battery cell hot pressing device of the present application, the third pressing plate 210 and the fourth pressing plate 220 on the second hot pressing assembly 200 are kept in the same height and flush, at this time, the third pressing plate 210 and the fourth pressing plate 220 are integrally spliced to form a second hot pressing surface 230, which can cover part or all of the second surface 720 of the battery cell 700.

[0072] It can be understood that, referring to FIG. 4, the battery cell hot-pressing device of the embodiment of the application forms a gap space for loading the battery cell 700 between the first hot-pressing assembly 100 and the second hot-pressing assembly 200 in the initial state.

[0073] Referring to FIGS. 3, 4 and 5, when the handling member (not shown in the figure, such as a gripper or a robot hand) carries the battery cell 700 to be hot-pressed into the gap space between the first hot-pressing assembly 100 and the second hot-pressing assembly 200, the first pressing plate 110 is staggered with the contact position of the handling member and the battery cell 700 in the first direction X corresponding to the position of the battery cell 700, and similarly, the third pressing plate 210 is staggered with the contact position of the handling member and the battery cell 700 in the first direction X corresponding to the position of the battery cell 700.

[0074] Then, the first pressing plate 110 is lowered along the first direction X to be attached to part of the surface of the first surface 710 of the battery cell 700, and at the same time, the third pressing plate 210 is raised along the first direction X to be attached to part of the surface of the second surface 720 of the battery cell 700, at this time, the first pressing plate 110 and the third pressing plate 210 clamp and fix the battery cell 700 in the gap space, and the handling member is free to disengage the battery cell 700, so that the battery cell 700 is fixed only under the clamping action of the first pressing plate 110 and the third pressing plate 210.

[0075] Then, the first hot-pressing assembly 100 drives the first pressing plate 110 and the second pressing plate 120 to descend along the first direction X as a whole, in this process, the first pressing plate 110 and the third pressing plate 210 remain in the state of clamping and fixing the battery cell 700, at the same time, the first pressing plate 110 pushes the third pressing plate 210 to descend and reset to the initial position in which the third pressing plate 210 is in the same height as the fourth pressing plate 220, the second hot-pressing surface 230 formed by splicing the third pressing plate 210 and the fourth pressing plate 220 not only positions and attaches the second surface 720 of the battery cell 700, but also can serve as a support surface for the first hot-pressing assembly 100 to continue to press down, so that the first pressing plate 110 and the second pressing plate 120 move to the state of being in the same height, so that the first hot-pressing surface 130 formed by splicing the first pressing plate 110 and the second pressing plate 120 positions and attaches the first surface 710 of the battery cell 700, so that the battery cell 700 is completely clamped and fixed between the first hot-pressing surface 130 and the second hot-pressing surface 230, and the loading of the battery cell 700 is completed, so as to facilitate the subsequent hot-pressing and shaping of the battery cell 700.

[0076] It is understandable that the battery cell hot pressing device of the embodiment of the application can effectively avoid the movement interference with the battery cell carrying member during the feeding of the battery cell 700 by setting the first pressing plate 110 and the second pressing plate 120 on the first hot pressing assembly 100 in a split type and enabling the first pressing plate 110 and the second pressing plate 120 to be alternately lifted along the first direction X, and by setting the third pressing plate 210 and the fourth pressing plate 220 on the second hot pressing assembly 200 in a split type and enabling the third pressing plate 210 to be lifted along the first direction X relative to the fourth pressing plate 220, so that the corresponding pressing plate can effectively avoid the movement interference with the battery cell carrying member during the feeding of the battery cell 700, and the battery cell 700 can be smoothly fed to the hot pressing station, effectively improving the efficiency of feeding the battery cell 700 to the hot pressing station for hot pressing and shaping, and further improving the production efficiency of the battery cell.

[0077] Of course, when the battery cell 700 that has completed the hot pressing and shaping needs to be unloaded, the actions of the first hot pressing assembly 100 and the second hot pressing assembly 200 can be opposite to the actions implemented during the feeding of the battery cell 700, and the movement interference with the carrying member can also be avoided, facilitating the unloading of the battery cell 700.

[0078] Referring to FIGS. 3, 4 and 5, in some embodiments of the application, the second pressing plate 120 has two, and the two second pressing plates 120 are respectively arranged on opposite sides of the first pressing plate 110, and the first pressing plate 110 and the two second pressing plates 120 form a first hot pressing surface 130 that covers the first surface 710 of the battery cell 700.

[0079] In some examples, the two second pressing plates 120 are respectively arranged on opposite sides of the first pressing plate 110 along the second direction Y, which is the left-right direction of the battery cell hot pressing device, i.e., the length direction thereof.

[0080] Referring to FIG. 4, when the battery cell hot pressing device is in an initial state, the first pressing plate 110 and the two second pressing plates 120 are in the same height and are flush, and the vertical projection of the first hot pressing surface 130 formed by splicing the three plates covers the entire first surface 710 of the battery cell 700 located therebelow.

[0081] In this way, on the one hand, when the carrying member transfers the battery cell 700 to be hot pressed into the gap space between the first hot pressing assembly 100 and the second hot pressing assembly 200, the first pressing plate 110 is at a middle position corresponding to the first surface 710 of the battery cell 700 along the first direction X, and it is mutually staggered with the carrying members on both sides of the battery cell 700, so that when the first pressing plate 110 is individually pressed to the battery cell 700 relative to the second pressing plates 120 on both sides thereof, it can smoothly avoid the movement interference with the carrying members on the battery cell 700, further improving the feeding efficiency of the battery cell 700.

[0082] On the other hand, the first hot pressing surface 130 formed by splicing the first pressing plate 110 and the two second pressing plates 120 can completely cover the first surface 710 of the battery cell 700, so that each part of the first surface 710 of the battery cell 700 can be hot pressed and shaped, the uniformity of hot pressing of the battery cell 700 is improved, and the hot pressing efficiency of the battery cell 700 is further improved.

[0083] Further, referring to FIGS. 1 and 2, the first hot pressing assembly 100 further comprises a first frame body 140, and all the second pressing plates 120 are connected to the first frame body 140 to be driven to ascend and descend along the first direction X by the first frame body 140, and the first pressing plate 110 is also connected to the first frame body 140 in a manner of being able to ascend and descend.

[0084] In some examples, all the second pressing plates 120 are connected to the first frame body 140 through a first bottom plate (not shown in the drawings), the first driving member 160 is installed on the first frame body 140, the output end of the first driving member 160 is connected to the first pressing plate 110, the first bottom plate is provided with a first avoiding opening (not shown in the drawings) for the output end of the first driving member 160 to extend and retract, and the first frame body 140 is connected to the output end of a pressing machine (not shown in the drawings). In this way, the first hot pressing assembly 100 is driven to ascend and descend along the first direction X as a whole by the pressing machine, and the first pressing plate 110 is driven to ascend and descend along the first direction X independently by the first driving member 160.

[0085] It is not difficult to understand that by connecting all the second pressing plates 120 to the first frame body 140, all the second pressing plates 120 can ascend and descend synchronously with the first frame body 140, and it is not necessary to configure a separate driving member for each second pressing plate 120, thereby saving material costs, and at the same time, the first frame body 140 can serve as a mounting support structure of the first pressing plate 110, facilitating the independent ascending and descending movement of the first pressing plate 110 relative to the second pressing plates 120.

[0086] Further, referring again to FIGS. 1 and 2, the first hot pressing assembly 100 further comprises a guide rail 150 extending along the first direction X, and the first frame body 140 is slidingly installed on the guide rail 150.

[0087] In some examples, the guide rail 150 has two guide rails 150, and the two guide rails 150 are respectively arranged on opposite sides of the first frame body 140 along the second direction Y, and the first frame body 140 is slidingly installed on the two guide rails 150 through a sliding block.

[0088] In this way, the linearity of the ascending and descending movement of the first frame body 140, the first pressing plate 110 and the second pressing plates 120 thereon along the first direction X can be improved, so that the first hot pressing surface 130 formed by splicing the first pressing plate 110 and the second pressing plates 120 can be accurately positioned and attached to the first surface 710 of the battery cell 700, and the probability of structural interference between the first pressing plate 110 and / or the second pressing plates 120 and the carrying member is reduced.

[0089] Referring to FIGS. 3 and 4, in some embodiments of the present application, the fourth pressing plate 220 is provided with two fourth pressing plates 220 respectively arranged on opposite sides of the third pressing plate 210, and the third pressing plate 210 and the two fourth pressing plates 220 are spliced to form a second hot pressing surface 230 covering the second surface 720 of the battery cell 700.

[0090] Similarly, the two fourth pressing plates 220 are respectively arranged on opposite sides of the third pressing plate 210 along the second direction Y. When the battery cell hot pressing device is in the initial state, the third pressing plate 210 and the two fourth pressing plates 220 are in the same height, and the vertical projection of the second hot pressing surface 230 formed by splicing the three plates covers the entire second surface 720 of the battery cell 700 located above.

[0091] In this way, on the one hand, when the carrying member transfers the battery cell 700 to be hot pressed into the gap space between the first hot pressing assembly 100 and the second hot pressing assembly 200, the third pressing plate 210 is corresponding to the middle position of the second surface 720 of the battery cell 700 along the first direction X, and it is staggered with the carrying member on both sides of the battery cell 700, so that the third pressing plate 210 can smoothly avoid the movement interference with the carrying member on the battery cell 700 when the third pressing plate 210 and the fourth pressing plates 220 on both sides of the third pressing plate 210 press the battery cell 700 separately, further improving the feeding efficiency of the battery cell 700.

[0092] On the other hand, the second hot pressing surface 230 formed by splicing the third pressing plate 210 and the two fourth pressing plates 220 can completely cover the second surface 720 of the battery cell 700, so that each part of the second surface 720 of the battery cell 700 can be hot pressed and shaped, improving the hot pressing uniformity of the battery cell 700, and further improving the hot pressing efficiency of the battery cell 700.

[0093] Further, referring to FIGS. 1 and 2, the second hot pressing assembly 200 further comprises a second frame body 240, and all the fourth pressing plates 220 are fixedly arranged on the second frame body 240, and the third pressing plate 210 is further connected to the second frame body 240 in a lifting manner.

[0094] In some examples, all the fourth pressing plates 220 are connected to the second frame body 240 through a second bottom plate (not shown in the figure), the second driving member 250 is installed on the second frame body 240, the output end of the second driving member 250 is connected to the third pressing plate 210, and the second bottom plate is provided with a second avoiding opening (not shown in the figure) for the output end of the second driving member 250 to extend and retract. In this way, the second driving member 250 drives the third pressing plate 210 to rise relative to the fourth pressing plate 220, and at the same time, the third pressing plate 210 and the output end of the second driving member 250 can be reset to the initial position under the pressing force of the first pressing plate 110, so that the second hot pressing surface 230 formed by splicing the third pressing plate 210 and the fourth pressing plate 220 presses and covers the second surface 720 of the battery cell 700.

[0095] It can be understood that the second frame body 240 serves as a mounting support structure of the third pressing plate 210 and all the fourth pressing plates 220, facilitating the spatial layout and installation of the third pressing plate 210 and the fourth pressing plates 220, and the second frame body 240 can serve as a bearing support structure of the first heat pressing assembly 100 as a whole and the battery cell 700, providing bearing for subsequent pressing and shaping of the battery cell 700.

[0096] Referring to FIGS. 3, 4 and 5, in some embodiments of the present application, the battery cell heat pressing device further comprises a first flexible film 300 arranged between the first heat pressing assembly 100 and the battery cell 700 along a second direction Y intersecting the first direction X, and the first pressing plate 110 and the second pressing plate 120 press and cover at least part of the first flexible film 300 on the first surface 710 of the battery cell 700 after descending by a preset distance along the first direction X.

[0097] In some examples, the first flexible film 300 is configured as a Teflon release film, which has good high-temperature resistance and heat conduction performance, and also has a relatively smooth surface.

[0098] It can be understood that when the battery cell 700 is completed, the battery cell 700 is clamped and fixed between the first heat pressing surface 130 and the second heat pressing surface 230, and at the same time, the first flexible film 300 is pressed and covered on the first surface 710 of the battery cell 700 by the first heat pressing surface 130.

[0099] In this way, on the one hand, the first pressing plate 110 and the second pressing plate 120 are connected to form the first heat pressing surface 130, which does not directly contact the first surface 710 of the battery cell 700, thereby effectively reducing the probability of indentation on the first surface 710 of the battery cell 700; on the other hand, the first flexible film 300 has structural characteristics, which can reduce the probability of adhesion between the first surface 710 of the battery cell 700 and the first pressing plate 110 and / or the second pressing plate 120 after heat pressing. In this way, the heat pressing quality and efficiency of the battery cell 700 are improved.

[0100] It should be noted that during the heat pressing process of the battery cell 700, the contact position of the first flexible film 300 with the first heat pressing surface 130 or the first surface 710 of the battery cell 700 is the same part, and after long-term use, the structural strength of the contact position of the first flexible film 300 with the first heat pressing surface 130 will be greatly worn, reducing the protective effect of the first flexible film 300 on the battery cell 700.

[0101] Based on this, in some embodiments, referring to FIG. 3 and FIG. 4, the battery cell hot-pressing device further comprises a first adjusting assembly 400 for guiding the first flexible film 300 to move along a preset direction to adjust the contact position of the first flexible film 300 with the first hot-pressing surface 130.

[0102] In some examples, the preset direction can be a straight line or a meandering curve, which is not particularly limited.

[0103] It is not difficult to understand that when it is necessary to adjust the contact position of the first flexible film 300 with the first hot-pressing surface 130, the adjustment can be made when the battery cell hot-pressing device is in an initial state, at which time the first flexible film 300 is not in contact with the surface of the battery cell 700 and / or the first hot-pressing surface 130.

[0104] By guiding the first flexible film 300 to move along the preset direction through the first adjusting assembly 400, the position of the corresponding contact of the first flexible film 300 with the first hot-pressing surface 130 is changed, which not only prolongs the service life of the first flexible film 300, but also enables each battery cell 700 to be effectively protected by the first flexible film 300, thereby reducing the probability of indentation on the first surface 710 of the battery cell 700 and the probability of adhesion of the battery cell 700 to the first hot-pressing surface, and thus improving the consistency of the hot-pressing effect of the plurality of battery cells 700.

[0105] Further, referring to FIG. 3 and FIG. 4, the first adjusting assembly 400 comprises a first unwinding roller 410, a first tensioning roller 420 and a first winding roller 430 arranged in sequence along a second direction Y, both ends of the first flexible film 300 are connected with the first unwinding roller 410 and the first winding roller 430 respectively, and the first flexible film 300 is further wound around the first tensioning roller 420.

[0106] In some examples, the first tensioning roller 420 has two, which are respectively mounted on opposite sides of the first frame body 140, and the first unwinding roller 410 and the first winding roller 430 are also respectively mounted on opposite sides of the first frame body 140.

[0107] When the first pressing plate 110 independently descends relative to the second pressing plate 120 along the first direction X, the bottom surface of the first pressing plate 110 will first contact the first flexible film 300 and cause the first flexible film 300 to partially deform downward. During the process of the first frame body 140 driving the first pressing plate 110 and the second pressing plate 120 to descend to the position of the fourth pressing plate 220, the first adjusting assembly 400 composed of the first unwinding roller 410, the first tensioning roller 420 and the first winding roller 430 will be synchronously lowered with the first frame body 140, so that the first flexible film 300 is subjected to a smaller tensile external force of the first pressing plate 110, thereby effectively reducing the probability of fracture of the first flexible film 300 due to excessive tensile deformation by the first pressing plate 110.

[0108] It should be noted that when it is necessary to adjust the contact position of the first flexible film 300 and the first hot pressing surface 130, the first winding roller 430 can be driven to rotate, so that the first winding roller 430 pulls the first flexible film 300 to be wound along the rotation direction of the first winding roller 430, so as to change the position of the corresponding contact of the first flexible film 300 and the first hot pressing surface 130, thereby achieving the effect of adjusting the contact position of the first flexible film 300 and the first hot pressing surface 130.

[0109] In addition, a damper can be arranged on the first winding roller 410 to be able to lock or unlock the first flexible film 300, which is beneficial to accurately adjust the contact position of the first flexible film 300 and the first hot pressing surface 130, and realizes the maximum degree of use of the first flexible film 300.

[0110] Referring to FIGS. 3, 4 and 5, in some embodiments of the present application, the battery cell hot pressing device further comprises a second flexible film 500 arranged between the second hot pressing assembly 200 and the battery cell 700 along a second direction Y intersecting the first direction X, and the first pressing plate 110 and the second pressing plate 120 press and hold the battery cell 700 between the first hot pressing surface 130 and the second hot pressing surface 230 after descending by a preset distance along the first direction X, so that at least part of the second flexible film 500 is pressed and held and covers the second surface 720 of the battery cell 700.

[0111] Similarly, the second flexible film 500 is configured as a Teflon release film, which has good high-temperature resistance and heat conduction performance, and also has a relatively smooth surface.

[0112] It can be understood that when the battery cell 700 is completed, the battery cell 700 is clamped and fixed between the first hot pressing surface 130 and the second hot pressing surface 230, and at the same time, the second flexible film 500 is pressed and held and covers the second surface 720 of the battery cell 700 by the second hot pressing surface 230.

[0113] In this way, on the one hand, by virtue of the protection of the smooth second flexible film 500 to the second surface 720 of the battery cell 700, the second hot pressing surface 230 formed by splicing the third pressing plate 210 and the fourth pressing plate 220 does not directly contact the second surface 720 of the battery cell 700, which can effectively reduce the probability of indentation of the second surface 720 of the battery cell 700; on the other hand, by virtue of the structural characteristics of the second flexible film 500, the probability of adhesion of the second surface 720 of the battery cell 700 to the third pressing plate 210 and / or the fourth pressing plate 220 after hot pressing of the battery cell 700 can be reduced. In this way, the hot pressing quality and efficiency of the battery cell 700 are improved.

[0114] Further, referring to FIGS. 4 and 5, the battery cell hot-pressing device further comprises a second adjusting assembly 600 configured to guide the second flexible film 500 to move along a preset direction to adjust the contact position of the second flexible film 500 with the second hot-pressing surface 230.

[0115] In some examples, the preset direction can be a straight line or a meandering curve, without limitation.

[0116] It is understood that when the contact position of the second flexible film 500 with the second hot-pressing surface 230 needs to be adjusted, the adjustment can be performed when the battery cell hot-pressing device is in the initial state, in which the second flexible film 500 is not in contact with the surface of the battery cell 700 and / or the second hot-pressing surface 230.

[0117] By guiding the second flexible film 500 to move along the preset direction through the second hot-pressing assembly 200, the position of the corresponding contact of the second flexible film 500 with the second hot-pressing surface 230 is changed, which not only prolongs the service life of the second flexible film 500, but also enables each battery cell 700 to be effectively protected by the second flexible film 500, reduces the probability of indentation on the second surface 720 of the battery cell 700, and reduces the probability of adhesion between the battery cell 700 and the second hot-pressing surface 230, thereby improving the consistency of the hot-pressing effect of the plurality of battery cells 700.

[0118] Further, referring to FIGS. 4 and 5, the second adjusting assembly 600 comprises a second unwinding roller 610, a second tensioning roller 620 and a second winding roller 630 arranged in sequence along the second direction Y, both ends of the second flexible film 500 are connected with the second unwinding roller 610 and the second winding roller 630, and the second flexible film 500 is further wound around the second tensioning roller 620.

[0119] In some examples, the second tensioning roller 620 has two, which are respectively installed on opposite sides of the second frame body 240, and the second unwinding roller 610 and the second winding roller 630 are also respectively installed on opposite sides of the second frame body 240.

[0120] When the third pressing plate 210 is independently raised relative to the fourth pressing plate 220 along the first direction X, the top surface of the third pressing plate 210 will first contact the second flexible film 500 and cause the second flexible film 500 to partially deform upward. When the first pressing plate 110 and the second pressing plate 120 are lowered to a position where they are flush with the fourth pressing plate 220, the second flexible film 500 is simultaneously moved to the initial position and recovers the deformation.

[0121] It is understandable that when the contact position of the second flexible film 500 with the second hot pressing surface 230 needs to be adjusted, the second winding roller 630 can be driven to rotate, so that the second winding roller 630 pulls the second flexible film 500 to be wound in the rotation direction of the second winding roller 630, so as to change the corresponding contact position of the second flexible film 500 with the second hot pressing surface 230, thereby achieving the effect of adjusting the contact position of the second flexible film 500 with the second hot pressing surface 230.

[0122] In addition, a damper can be arranged on the second unwinding roller 610 to be able to lock or unlock the second flexible film 500, which is beneficial to accurately adjust the corresponding contact position of the second flexible film 500 with the second hot pressing surface 230, and realize the maximum degree of use of the second flexible film 500.

[0123] In addition, the application also provides a battery production equipment, which comprises the cell hot pressing device of any one of the above-mentioned embodiments.

[0124] The battery production equipment of the application has the same technical effects as the cell hot pressing device, that is, by arranging the first pressing plate and the second pressing plate of the first hot pressing assembly in a split type and enabling the first pressing plate and the second pressing plate to alternately ascend and descend along the first direction, and by arranging the third pressing plate and the fourth pressing plate of the second hot pressing assembly in a split type and enabling the third pressing plate to ascend and descend along the first direction relative to the fourth pressing plate, the corresponding pressing plates can effectively avoid the motion interference with the cell carrying member during the cell feeding process, so that the cell can be smoothly fed to the hot pressing station, effectively improving the efficiency of feeding the cell to the hot pressing station for hot pressing and shaping, thereby improving the production efficiency of the cell and the production efficiency of the battery.

[0125] Referring to FIGS. 1-5, in some embodiments of the application, a cell hot pressing device and a battery production equipment are provided. The cell hot pressing device comprises a first hot pressing assembly 100 and a second hot pressing assembly 200. The first hot pressing assembly 100 comprises a first pressing plate 110 and a second pressing plate 120 arranged adjacent to the first pressing plate 110, the first pressing plate 110 and the second pressing plate 120 are spliced to form a first hot pressing surface 130 to press and cover at least part of a first surface 710 of a cell 700, and the first pressing plate 110 and the second pressing plate 120 can alternately ascend and descend along a first direction X. The second hot pressing assembly 200 is arranged opposite to the first hot pressing assembly 100 along the first direction X, and the second hot pressing assembly 200 comprises a third pressing plate 210 and a fourth pressing plate 220 arranged adjacent to the third pressing plate 210, the third pressing plate 210 and the fourth pressing plate 220 are spliced to form a second hot pressing surface 230 to press and cover at least part of a second surface 720 of the cell 700, and the third pressing plate 210 can ascend and descend relative to the fourth pressing plate 220 along the first direction X.

[0126] The battery production equipment comprises the battery cell hot-pressing device.

[0127] The battery cell hot-pressing device and the battery production equipment have the following advantages. The first pressing plate 110 and the second pressing plate 120 on the first hot-pressing assembly 100 are separately arranged, and the first pressing plate 110 and the second pressing plate 120 can be alternately lifted along the first direction X. Meanwhile, the third pressing plate 210 and the fourth pressing plate 220 on the second hot-pressing assembly 200 are separately arranged, and the third pressing plate 210 can be lifted along the first direction X relative to the fourth pressing plate 220. In this way, the corresponding pressing plates can effectively avoid the motion interference with the battery cell carrying member during the feeding of the battery cell 700, so that the battery cell 700 can be smoothly fed to the hot-pressing station, and the efficiency of feeding the battery cell 700 to the hot-pressing station for hot-pressing and shaping is effectively improved, thereby improving the production efficiency of the battery cell and the corresponding battery.

[0128] Any combination of the technical features in the above-described embodiments can be combined. To make the description simple, all possible combinations of the technical features in the above-described embodiments are not described, however, as long as the combination of the technical features does not exist, it should be considered as the scope of the present disclosure.

[0129] The above-described embodiments only express several implementation manners of the present application, and the description is relatively specific and detailed, but it should not be understood as a limitation on the patent scope of the present application. It should be noted that, for ordinary skilled persons in the art, several modifications and improvements can be made without departing from the concept of the present application, and these all belong to the protection scope of the present application. Therefore, the patent protection scope of the present application should be subject to the appended claims.

Claims

1. A cell hot-pressing device, comprising: a first hot-pressing assembly including a first pressing plate and a second pressing plate disposed adjacent to the first pressing plate, the first pressing plate and the second pressing plate being combined to form a first hot-pressing surface to hold and cover at least part of a first surface of a cell, the first pressing plate and the second pressing plate being capable of being alternately raised and lowered along a first direction; a second hot-pressing assembly disposed opposite to the first hot-pressing assembly along the first direction, including a third pressing plate and a fourth pressing plate disposed adjacent to the third pressing plate, the third pressing plate and the fourth pressing plate being combined to form a second hot-pressing surface to hold and cover at least part of a second surface of the cell, the third pressing plate being capable of being raised and lowered relative to the fourth pressing plate along the first direction.

2. The cell heat press apparatus of claim 1, wherein, The second pressing plate has two, and the two second pressing plates are respectively arranged on opposite sides of the first pressing plate, and the first hot-pressing surface formed by the first pressing plate and the two second pressing plates covers the first surface of the cell.

3. The cell heat press apparatus of claim 2, wherein, The first hot-pressing assembly further includes a first frame body, and all the second pressing plates are connected to the first frame body to be driven to be raised and lowered along the first direction by the first frame body.

4. The cell heat press apparatus of claim 3, wherein, The first pressing plate is also connected to the first frame body to be raised and lowered.

5. The cell heat press apparatus of claim 3 or 4, wherein, The first hot-pressing assembly further includes a guide rail extending along the first direction, and the first frame body is slidingly installed on the guide rail.

6. The cell hot press apparatus of any one of claims 1 to 5, wherein, The fourth pressing plate has two, and the two fourth pressing plates are respectively arranged on opposite sides of the third pressing plate, and the second hot-pressing surface formed by the third pressing plate and the two fourth pressing plates covers the second surface of the cell.

7. The cell heat press apparatus of claim 6, wherein, The second hot-pressing assembly further includes a second frame body, and all the fourth pressing plates are fixedly arranged on the second frame body.

8. The cell heat press apparatus of claim 7, wherein, The third pressing plate is also connected to the second frame body to be raised and lowered.

9. The cell hot press apparatus of any one of claims 1 to 8, wherein, The cell hot-pressing device further includes a first flexible film arranged between the first hot-pressing assembly and the cell along a second direction intersecting the first direction, and at least part of the first flexible film is held and covered on the first surface of the cell after the first pressing plate and the second pressing plate are lowered by a preset distance relative to the first direction.

10. The cell heat press apparatus of claim 9, wherein, The cell hot-pressing device further includes a first adjusting assembly for guiding the first flexible film to move along a preset direction to adjust a contact position of the first flexible film with the first hot-pressing surface.

11. The cell heat press apparatus of claim 10, wherein, The first adjusting assembly includes a first unwinding roller, a first tensioning roller and a first winding roller arranged in sequence along the second direction, two ends of the first flexible film are respectively connected to the first unwinding roller and the first winding roller, and the first flexible film is further arranged around the first tensioning roller.

12. The cell hot press apparatus of any one of claims 1 to 11, wherein, The cell hot-pressing device further includes a second flexible film arranged between the second hot-pressing assembly and the cell along a second direction intersecting the first direction, and the cell is held between the first hot-pressing surface and the second hot-pressing surface after the first pressing plate and the second pressing plate are lowered by a preset distance relative to the first direction, so that at least part of the second flexible film is held and covered on the second surface of the cell.

13. The cell heat press apparatus of claim 12, wherein, The cell hot-pressing device further comprises a second adjusting assembly for guiding the second flexible film to move along a preset direction to adjust a contact position of the second flexible film with the second hot-pressing surface.

14. The cell heat press apparatus of claim 13, wherein, The second adjusting assembly comprises a second unwinding roller, a second tensioning roller and a second winding roller arranged in sequence along the second direction, two ends of the second flexible film are connected with the second unwinding roller and the second winding roller respectively, and the second flexible film further winds around the second tensioning roller. 15.A battery production equipment comprising the cell hot-pressing device according to any one of claims 1 to 14.

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