Hot pressing device and lithium battery production system

Abstract

The utility model relates to a hot pressing device and a lithium battery production system.The hot pressing device comprises a base, a rotary table module and a hot pressing module, the rotary table module comprises a rotary table, the rotary table is rotationally arranged at the top of the base, a plurality of workpiece containing grooves are formed in the rotary table, and the workpiece containing grooves are in central symmetry with the rotating center of the rotary table as the center; the hot pressing module is provided with a plurality of liftable hot pressing plates, the number of the workpiece placing grooves is n times that of the hot pressing plates, and n is an integer larger than 1; the rotating disc is provided with a plurality of preset rotating positions, and when the rotating disc is located at any preset rotating position, any hot pressing plate corresponds to one workpiece containing groove. According to the hot pressing device, the multiple workpiece containing grooves are formed in the rotating disc, batch feeding of the multiple workpieces can be achieved, in the hot pressing process, the workpiece containing grooves below the hot pressing plate are switched through rotation of the rotating disc, and therefore continuous hot pressing operation of the multiple workpieces is achieved, the labor intensity of operators can be reduced, and the production efficiency is improved.

Description

Technical Field

[0001] This application relates to the technical field of hot pressing, and particularly relates to a hot pressing device and a lithium battery production system. Background Art

[0002] During the production process of components, it is often necessary to use a hot pressing device to perform hot pressing and shaping on workpieces, so that the workpieces reach the preset density, connection state or shape.

[0003] Taking the production of lithium batteries as an example, lithium battery hot pressing is an essential process in the production and manufacturing of lithium batteries. By hot pressing the lithium battery, materials inside the battery such as diaphragms, positive and negative electrodes, etc. can be better combined together, which is beneficial to improving the safety performance and service life of lithium batteries.

[0004] In the working process of the existing hot pressing device, it is used in cooperation with a lifting mechanism and a hot pressing mechanism. The lithium battery is placed below the hot pressing mechanism, and the lifting mechanism drives the hot pressing mechanism to press on the lithium battery; after the hot pressing is completed, the lifting mechanism drives the hot pressing mechanism to move upward, and the lithium battery is removed manually, and then a new lithium battery is placed, so as to perform hot pressing operations on the lithium battery. During the hot pressing process, it is necessary to frequently pick up and place the lithium battery, which increases the labor intensity of the operator and the feeding and unloading frequency; and during feeding and unloading, the waiting time of the hot pressing mechanism is relatively long, the equipment utilization rate is low, and the production efficiency is low. Summary of the Utility Model

[0005] This application provides a hot pressing device and a lithium battery production system to solve the technical problem that frequent feeding and unloading operations are required during the production process of the existing hot pressing device, and the equipment utilization rate is relatively low.

[0006] In a first aspect, this application provides a hot pressing device, including:

[0007] A base;

[0008] A turntable module, the turntable module includes a turntable, the turntable is rotatably arranged on the top of the base, and there are a plurality of workpiece placement slots on the turntable, and the plurality of workpiece placement slots are arranged in central symmetry with the rotation center of the turntable as the center;

[0009] A hot pressing module, the hot pressing module has a plurality of liftable hot pressing plates, the number of workpiece placement slots is n times the number of hot pressing plates, and n is an integer greater than or equal to 1; the turntable has a plurality of preset rotation positions, and at any one of the preset rotation positions, any one of the hot pressing plates corresponds to a workpiece placement slot.

[0010] Optionally, the base is of a box-type structure, and the turntable module further includes a driving component drivingly connected to the turntable, and the driving component is arranged inside the box-type structure.

[0011] Optionally, the driving component package includes a rotary driving member, a driving shaft, a main gear, a transmission shaft, and a secondary gear. The rotary driving member is connected to the driving shaft, and the driving shaft is coaxially arranged with the main gear. The transmission shaft is coaxially arranged with the turntable and the secondary gear, and the main gear meshes with the secondary gear.

[0012] Optionally, both the upper and lower ends of the transmission shaft are rotatably connected to the base, and bearings for connecting with the transmission shaft are provided on the base.

[0013] Optionally, the base has a box door arranged movably; the box-shaped structure has a heat dissipation port, and a dust-proof member is provided at the heat dissipation port.

[0014] Optionally, the hot pressing module further includes a frame and a lifting component. The frame is erected on the top of the base, the lifting component is arranged on the frame, and the lifting component is connected to the hot pressing plate.

[0015] Optionally, the frame has a guiding structure extending in the vertical direction, and the lifting component has a guiding portion arranged to match the guiding structure.

[0016] Optionally, the hot pressing plate has a heating cavity, and a heating plate and a temperature detecting element are provided in the heating cavity.

[0017] Optionally, the hot pressing device further includes a control module and a display module, and both the temperature detecting element and the display module are signal-connected to the control module.

[0018] In a second aspect, the present application provides a lithium battery production system, including the hot pressing device provided in the first aspect of the present application.

[0019] The above technical solutions provided by the embodiments of the present application have the following advantages compared with the prior art:

[0020] The hot pressing device provided by the embodiment of the present application is provided with a plurality of workpiece placement grooves on the turntable, which can realize batch feeding of a plurality of workpieces at one time, reducing the feeding and discharging frequency during the production process; the hot pressing module has a plurality of liftable hot pressing plates to facilitate hot pressing and releasing of the workpieces in the workpiece placement grooves. The number of workpiece placement grooves is n times the number of hot pressing plates, and n is an integer greater than or equal to 1. When the number of hot pressing plates is equal to the number of workpiece placement grooves, synchronous lifting of a plurality of hot pressing plates can realize synchronous hot pressing of a plurality of workpieces on the hot pressing device at one time, which is beneficial to improving production efficiency. When the number of workpiece placement grooves is more than twice the number of hot pressing plates, the turntable has a plurality of preset rotation positions. At any one of the preset rotation positions, any one hot pressing plate corresponds to one workpiece placement groove. The workpiece placement grooves can be divided into multiple groups with the same number of workpiece placement grooves. The multiple workpiece placement grooves in each group of workpiece placement grooves are arranged in one-to-one correspondence with the multiple hot pressing plates. After the hot pressing of the workpieces in one group of workpiece placement grooves is completed, the position of the workpiece placement grooves is adjusted by rotating the turntable, so as to facilitate the hot pressing of the workpieces in the next group of workpiece placement grooves by a plurality of hot pressing plates. While improving the production efficiency of the workpieces, the waiting time of the hot pressing module can be reduced, the equipment utilization rate can be improved, and the production efficiency of the workpieces can be improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] The accompanying drawings herein are incorporated into and constitute a part of this specification, showing embodiments consistent with the present application and, together with the specification, are used to explain the principles of the present application.

[0022] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the accompanying drawings required for use in the description of the embodiments or the prior art. Obviously, for those of ordinary skill in the art, other drawings can also be obtained based on these drawings without creative efforts.

[0023] One or more embodiments are exemplarily illustrated by the pictures in the corresponding accompanying drawings. These exemplary illustrations do not constitute limitations on the embodiments. Elements with the same reference numerals in the drawings are represented as similar elements, unless otherwise stated, and the drawings in the drawings do not constitute a proportional limitation.

[0024] Figure 1 It is a schematic structural diagram of the hot pressing device provided by the embodiment of the present application;

[0025] Figure 2 It is a schematic connection diagram of the base and the turntable module provided by the embodiment of the present application;

[0026] Figure 3 It is a schematic structural diagram of the hot pressing plate provided by the embodiment of the present application;

[0027] Figure 4 It is a top view of the turntable provided by the embodiment of the present application;

[0028] Figure 5 This is a layout schematic diagram of multiple hot plates provided by an embodiment of the present application.

[0029] Explanation of reference numerals in the drawings:

[0030] 1. Base; 11. Bearing; 12. Cabinet door; 121. Handle; 13. Heat dissipation port; 14. Anti-slip pad;

[0031] 2. Turntable module; 21. Turntable; 211. Workpiece placement groove; 212. Turntable body; 22. Driving component; 221. Rotary driving part; 222. Driving shaft; 223. Main gear; 224. Transmission shaft; 225. Sub-gear;

[0032] 3. Hot pressing module; 31. Hot plate; 311. Heating plate; 312. Temperature detection element; 313. Hot plate body; 32. Frame; 321. Guide structure; 33. Lifting component; 331. Guide part; 332. Connection plate; 333. Connecting rod;

[0033] 4. Control module;

[0034] 5. Display module;

[0035] 6. Power supply module. Detailed implementation manners

[0036] To make the objectives, technical solutions, and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are some, but not all, of the embodiments of the present application. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present application without creative efforts shall fall within the protection scope of the present application.

[0037] The following disclosure provides many different embodiments or examples for implementing different structures of the present application. To simplify the disclosure of the present application, components and settings of specific examples are described below. Of course, they are only examples and are not intended to limit the present application. In addition, the present application may repeat reference numerals and / or letters in different examples. Such repetition is for the purpose of simplification and clarity, and does not itself indicate the relationship between the various embodiments and / or settings discussed.

[0038] For ease of description, spatial relative relationship terms may be used in the text to describe the relative positional relationship or movement of one element or feature shown in the figure with respect to another element or feature. These relative relationship terms are, for example, "inner", "outer", "inner side", "outer side", "below", "beneath", "above", "over", "front", "rear", etc. Such spatial relative relationship terms are intended to include different orientations of the device during use or operation other than the orientations depicted in the figure. For example, if the device in the figure undergoes a position flip, attitude change, or motion state change, then these directional indications will change accordingly. For example, an element described as "below other elements or features" or "beneath other elements or features" will subsequently be oriented as "above other elements or features" or "over other elements or features". Therefore, the exemplary term "below" can include both upper and lower orientations. The device can be oriented otherwise (rotated 90 degrees or in other directions) and the spatial relative relationship descriptors used in the text are interpreted accordingly.

[0039] In the prior art, since there is usually only one workpiece slot located below the hot pressing mechanism in the hot pressing device, the workpiece to be hot pressed, such as a lithium battery, is placed in the workpiece slot, and then the hot pressing mechanism is driven by the lifting mechanism to press down, so as to realize the hot pressing of the lithium battery. After the hot pressing is completed, the lithium battery needs to be taken out of the workpiece slot and a new lithium battery needs to be placed into the workpiece slot. For each lithium battery hot pressed, it is necessary to stop the machine for loading and unloading operations, resulting in a relatively high labor intensity for the operator, a high loading and unloading frequency, a long waiting time for the equipment, and low equipment utilization rate and production efficiency.

[0040] In order to solve the technical problem that frequent loading and unloading operations are required during the production process of the hot pressing device in the prior art and the equipment utilization rate is low, the present application provides a hot pressing device and a lithium battery production system. A turntable module 2 with a turntable 21 is provided in the hot pressing device. A plurality of workpiece placement slots 211 are provided on the turntable 21, and batch loading of a plurality of workpieces can be realized at one time. During the hot pressing process, the workpiece placement slot 211 below the hot pressing plate 31 can be switched by rotating the turntable 21, so as to realize continuous hot pressing operations on a plurality of workpieces, which can reduce the labor intensity of the operator, improve the equipment utilization rate, and increase the production efficiency. In the following embodiments of the present application, the hot pressing device is used for lithium battery production, and the lithium battery is used as the workpiece to be hot pressed for description.

[0041] Please refer to Figures 1 to 5 , a first aspect of an embodiment of the present application provides a hot pressing device, including a base 1, a turntable module 2, and a hot pressing module 3, as Figure 1 shown. Among them, the base 1 is used to realize the installation of the turntable module 2 and the hot pressing module 3. The turntable module 2 includes a turntable 21, and the turntable 21 is rotatably arranged on the top of the base 1 and can rotate in a horizontal plane relative to the base 1.

[0042] The turntable 21 is provided with a plurality of workpiece placement grooves 211. When performing the loading and unloading operations of workpieces, batch loading and batch unloading of a plurality of workpieces can be achieved at one time, reducing the loading and unloading frequency during the production process and lowering the labor intensity of the operator. The plurality of workpiece placement grooves 211 are symmetrically arranged about the rotation center of the turntable 21, as Figure 1 and Figure 4 shown, so as to facilitate the rotational positioning of the workpiece placement grooves 211 by presetting the rotation angle of the turntable 21 when the turntable 21 rotates.

[0043] The hot pressing module 3 has a plurality of liftable hot pressing plates 31, which can be lifted and lowered in the vertical direction to facilitate hot pressing and releasing of the workpieces in the workpiece placement grooves 211. The number of the workpiece placement grooves 211 is n times the number of the hot pressing plates 31, and n is an integer greater than or equal to 1; when the number of the hot pressing plates 31 is equal to the number of the workpiece placement grooves 211, synchronous lifting of the plurality of hot pressing plates 31 can achieve synchronous hot pressing of a plurality of workpieces on the hot pressing device at one time, which is beneficial to improving the production efficiency. When the number of the workpiece placement grooves 211 is more than 2 times the number of the hot pressing plates 31, the turntable 21 has a plurality of preset rotation positions. At any one of the preset rotation positions, any one of the hot pressing plates 31 corresponds to one workpiece placement groove 211, so that the hot pressing plate 31 hot presses the workpiece in the workpiece placement groove 211 opposite to it. Specifically, the workpiece placement grooves 211 can be divided into multiple groups of workpiece placement grooves 211 with the same number. The multiple workpiece placement grooves 211 in each group of workpiece placement grooves 211 are arranged in one-to-one correspondence with the multiple hot pressing plates 31. After the hot pressing of the workpieces in one group of workpiece placement grooves 211 is completed, the position of the workpiece placement grooves 211 is adjusted by rotating the turntable 21, so that the hot pressing plate 31 is opposite to the next group of workpiece placement grooves 211, facilitating the hot pressing of the workpieces in the next group of workpiece placement grooves 211. While improving the production efficiency of the workpieces, the waiting time of the hot pressing module 3 can be reduced (because the rotation time of the turntable 21 once is much less than the loading and unloading time once), the downtime of the hot pressing device can be reduced, the equipment utilization rate can be improved, and the production efficiency of the workpieces can be improved.

[0044] It should be noted that, in order to avoid the turntable 21 being too large in size, it is preferred that the number of the workpiece placement grooves 211 is 2 times the number of the hot pressing plates 31.

[0045] In some embodiments of the present application, please refer to Figure 1 and Figure 2, when the number of hot pressing plates 31 is two, the two hot pressing plates 31 can be arranged in a straight line. At this time, it is preferably to set four workpiece placement grooves 211 on the turntable 21. The four workpiece placement grooves 211 are evenly arranged on the turntable body 212 and are distributed in a cross shape (centrally symmetrically arranged with the rotation center of the turntable 21 as the center). Among the four workpiece placement grooves 211, taking two relatively arranged workpiece placement grooves 211 as a group, after the workpiece in one group of workpiece placement grooves 211 is hot pressed, rotate the turntable 21 by 90°, and then the workpiece in the next group of workpiece placement grooves 211 can be hot pressed.

[0046] In some other embodiments of the present application, please refer to Figure 4 and Figure 5 , when the number of hot pressing plates 31 is three, the three hot pressing plates 31 are evenly arranged in a triangular shape. At this time, it is preferably to set six workpiece placement grooves 211 on the turntable 21. The six workpiece placement grooves 211 are evenly arranged on the turntable body 212 and are distributed in a ring shape (centrally symmetrically arranged with the rotation center of the turntable 21 as the center). Among the six workpiece placement grooves 211, taking three workpiece placement grooves 211 that form an equilateral triangle distribution as a group, after the workpiece in one group of workpiece placement grooves 211 is hot pressed, rotate the turntable 21 by 60°, and then the workpiece in the next group of workpiece placement grooves 211 can be hot pressed.

[0047] In some embodiments of the present application, please refer to Figure 1 and Figure 2 , the base 1 is of a box-type structure. The turntable module 2 further includes a driving component 22 that is drivingly connected to the turntable 21. The driving component 22 drives the turntable 21 to rotate relative to the base 1, so as to realize the alignment of the hot pressing plate 31 with different groups of workpiece placement grooves 211. The driving component 22 is arranged inside the box-type structure, and the driving component 22 can be protected by the base 1 to avoid the driving component 22 being interfered by external factors, and the working stability of the driving component 22 can be improved.

[0048] It should be noted that the driving component 22 of the present application can adopt components such as a hydraulic motor or a driving motor, and all can drive the turntable 21 to rotate. However, when setting a hydraulic motor, complex hydraulic pipelines and control valves need to be set, which easily causes problems such as complex structure and high failure rate of the driving component 22.

[0049] In order to avoid the above problems, in some preferred embodiments of the present application, please refer to Figure 2, The driving assembly 22 includes a rotary driving member 221, a driving shaft 222, a main gear 223, a transmission shaft 224 and a sub-gear 225. The rotary driving member 221 is preferably a servo motor, which has the characteristics of high control accuracy and stable operation, can achieve high-precision control of the rotation angle of the turntable 21, and is convenient for realizing the rotational positioning between the workpiece placement groove 211 and the hot pressing plate 31. The output shaft of the rotary driving member 221 is connected to the driving shaft 222, and the driving shaft 222 is coaxially arranged with the main gear 223 to achieve synchronous rotation; the transmission shaft 224 is coaxially arranged with the turntable 21 and the sub-gear 225, and the main gear 223 meshes with the sub-gear 225, which can achieve speed reduction transmission and control the rotation speed of the turntable 21 within a reasonable range.

[0050] It should be noted that in the present application, the power transmission between the rotary driving member 221 and the turntable 21 is realized through gear transmission, which can make the structure of the driving assembly 22 compact and facilitate the layout of the driving assembly 22 inside the box-shaped structure. At the same time, through the meshing transmission of the main gear 223 and the sub-gear 225, high-precision control of the rotation angle of the turntable 21 can be achieved, which is beneficial to realizing the rotational positioning between the workpiece placement groove 211 and the hot pressing plate 31.

[0051] In some embodiments of the present application, please refer to Figure 2 , both the upper and lower ends of the transmission shaft 224 are rotatably connected to the base 1, and the base 1 is provided with bearings 11 for connecting with the transmission shaft 224, which can be used to ensure the vertical concentricity of the transmission shaft 224, and at the same time ensure the smooth rotation of the transmission shaft 224 and avoid jamming during the rotation of the turntable 21. At the same time, the bearings 11 can also limit the upper and lower ends of the transmission shaft 224 to prevent the transmission shaft 224 from being in a suspended state and then vibrating.

[0052] In some embodiments of the present application, please refer to Figure 1 and Figure 2 , the base 1 has a movable box door 12, which can be used to realize the opening and closing of the internal installation space of the base 1, facilitate the installation and maintenance of the driving assembly 22, and improve the service life of the driving assembly 22 and the hot pressing device. After closing the box door 12, it can prevent external impurities from entering the driving assembly 22 and affecting the meshing transmission between the main gear 223 and the sub-gear 225.

[0053] One side of the box-shaped structure has a heat dissipation port 13, which can be used to dissipate the heat generated during the operation of the driving assembly 22 to the outside of the base 1. There is a dust-proof component at the heat dissipation port 13, which can prevent dust from entering the base 1 through the heat dissipation port 13.

[0054] Specifically, the box door 12 is hinged to the main body of the base 1 through a hinge, and the box door 12 is provided with a handle 121 to facilitate the opening and closing of the box door 12; the dust-proof component can be components such as a dust-proof net and a filter element.

[0055] In some embodiments of the present application, please refer to Figure 1 , an anti-slip pad 14 is further provided at the bottom of the base 1, which can prevent the base 1 from shifting during the use of the hot pressing device and causing potential safety hazards. Specifically, the four anti-slip pads 14 are evenly bonded to the four sides of the base 1, so that the bottom of the hot pressing device has an anti-slip function and improves the stability during the use of the hot pressing device.

[0056] In some embodiments of the present application, please refer to Figure 1 , the hot pressing module 3 further includes a frame 32 and a lifting assembly 33. The frame 32 is an arch-shaped frame (or a gantry frame) and is erected on the top of the base 1. The turntable 21 is located below the frame 32. The lifting assembly 33 is arranged on the frame 32, and the lifting assembly 33 is connected to the hot pressing plate 31, and can drive the hot pressing plate 31 to move relative to the frame 32, so that the hot pressing plate 31 descends and presses on the top of the workpiece in the workpiece placement groove 211. After the hot pressing is completed, the lifting assembly 33 drives the hot pressing plate 31 to rise to realize the separation of the hot pressing plate 31 from the workpiece in the workpiece placement groove 211.

[0057] In some embodiments of the present application, the lifting assembly 33 includes a hydraulic cylinder. The cylinder body of the hydraulic cylinder is fixedly arranged on the frame 32, the piston rod of the hydraulic cylinder is connected to the connecting plate 332, and the hot pressing plate 31 is connected to the connecting plate 332 through a connecting rod 333. When the hydraulic cylinder expands and contracts, it can drive the connecting plate 332, the connecting rod 333 and the hot pressing plate 31 to lift synchronously.

[0058] It should be noted that the shape of the connecting plate 332 can be designed according to the layout of the hot pressing plate 31, and can specifically be a rectangular plate body or a circular plate body, as shown in Figure 1 and Figure 5 .

[0059] In some embodiments of the present application, please refer to Figure 1 , the frame 32 is provided with a guiding structure 321. The guiding structure 321 extends in the vertical direction. The lifting assembly 33 has a guiding portion 331 that is arranged to match the guiding structure 321. The guiding portion 331 cooperates with the guiding structure 321, so that the guiding portion 331 can move in the vertical direction, thereby realizing the vertical guiding of the guiding structure 321 to the lifting assembly 33.

[0060] It should be noted that the guiding structure 321 can be components such as guiding holes and guiding grooves arranged in the vertical direction. The guiding portion 331 can be a guiding rod that cooperates with the guiding hole, or a slider that cooperates with the guiding groove, and can all achieve the purpose of the present application.

[0061] As a specific embodiment of the present application, please refer to Figure 1, the guiding structure 321 is a chute provided on both sides of the frame 32, and the guiding portion 331 is a sliding rod fixedly connected to the connecting plate 332. The sliding rod is slidably connected to the inner wall of the chute in the vertical direction, which can realize the vertical guiding of the connecting plate 332 and the hot pressing plate 31.

[0062] In some embodiments of the present application, please refer to Figure 1 and Figure 3 , the hot pressing plate 31 has a heating chamber, in which a heating plate 311 and a temperature detection element 312 are provided. The temperature of the heating chamber is raised by the heating plate 311, so as to raise the temperature of the hot pressing plate main body 313. The temperature of the heating chamber is detected by the temperature detection element 312. When the temperature is too high or too low, the temperature detection information of the heating chamber can be transmitted to the control module 4 in time, so as to control the heating temperature of the heating plate 311.

[0063] It should be noted that the heating plate 311 and the temperature detection element 312 are arranged inside the hot pressing plate main body 313. The hot pressing plate main body 313 has good heat conduction performance, and can transfer the temperature of the heating plate 311 to the workpiece, which is convenient for hot pressing the workpiece. The cable of the temperature detection element 312 extends out of the hot pressing plate main body 313, so as to be signal-connected to other modules.

[0064] In some embodiments of the present application, please refer to Figure 1 , the hot pressing device further includes a control module 4 and a display module 5. The temperature detection element 312 and the display module 5 are both signal-connected to the control module 4. The temperature information of the hot pressing plate 31 can be displayed to the operator through the display module 5, and control information can be input through the control module 4, so as to control the temperature of the hot pressing plate 31, which is beneficial to improving the hot pressing quality of the workpiece.

[0065] As a specific embodiment of the present application, the display module 5 is fixedly arranged on the connecting plate 332. The temperature detection element 312 is connected to the display module 5 through a wire, and the temperature information detected by the temperature detection element 312 can be displayed through the display module 5. The control module 4 is arranged on one side of the frame 32 and can communicate with the display module 5 by wire or wirelessly, so as to communicate with the display module 5.

[0066] In some embodiments of the present application, please refer to Figure 1 , the hot pressing device further includes a power supply module 6. A storage battery is provided in the power supply module 6, which can be used to supply power to the electrical equipment inside the hot pressing device. Specifically, the power supply module 6 is arranged on the frame 32 and is connected to the electrical equipment through a conductive cable to realize power transmission.

[0067] In the second aspect of the embodiments of the present application, a lithium battery production system is provided, including the hot pressing device in the above embodiments. During the hot pressing process of the lithium battery, the lifting assembly 33 drives the hot pressing plate 31 to lift and lower, and the driving assembly 22 drives the turntable 21 to rotate. Through the cooperation of the hot pressing module 3 and the turntable module 2, continuous hot pressing production of multiple lithium batteries can be achieved at one time, improving the production efficiency of lithium batteries.

[0068] At the same time, the temperature of the heating chamber of the hot pressing plate 31 is detected by the temperature detection element 312, and the detected data is transmitted to the display module 5 and the control module 4 through wires. The temperature is displayed by the display module 5 for easy viewing by the operator. When the temperature is too high or too low, it can be adjusted in time through the control module 4 to achieve the purpose of temperature control, further improving the quality of the lithium battery after hot pressing.

[0069] Please refer to Figures 1 to 5 , in some embodiments of the present application, the usage method of the above hot pressing device is as follows:

[0070] Step 1: The hot pressing plate 31 is lifted to the initial height through the lifting assembly 33, and the operator loads multiple lithium batteries in batches on the turntable 21, so that each workpiece placement slot 211 is provided with a lithium battery to be hot pressed;

[0071] Step 2: The heating plate 311 heats up to increase the temperature of the hot pressing plate 31. The lifting assembly 33 drives the hot pressing plate 31 to descend, so that the hot pressing plate 31 is pressed against the lithium battery in the workpiece placement slot 211. During the hot pressing process, the temperature of the hot pressing plate 31 is observed through the display module 5, and the temperature of the hot pressing plate 31 is regulated through the control module 4;

[0072] Step 3: After the hot pressing of the lithium batteries in the previous group of workpiece placement slots 211 is completed, the lifting assembly 33 drives the hot pressing plate 31 to rise to a height that does not interfere with the turntable 21, and the driving assembly 22 drives the turntable 21 to rotate to the next preset rotation position, so that the next group of workpiece placement slots 211 is aligned with the multiple hot pressing plates 31;

[0073] Step 4: The lifting assembly 33 drives the hot pressing plate 31 to press down again to perform hot pressing on the lithium batteries in the next group of workpiece placement slots 211;

[0074] Step 5: Repeat Steps 3 and 4 until the hot pressing of all the lithium batteries in all the workpiece placement slots 211 on the turntable 21 is completed;

[0075] Step 6: The lifting assembly 33 drives the hot pressing plate 31 to rise to the initial height, and the operator unloads the hot pressed lithium batteries in batches.

[0076] It should be understood that the terms used herein are for the purpose of describing particular example embodiments only and are not intended to be limiting. Unless the context clearly dictates otherwise, the singular forms "a", "an" and "the" as used herein may also include the plural. The terms "comprising", "including", "containing" and "having" are inclusive and thus specify the presence of stated features, steps, operations, elements and / or components, but do not preclude the presence or addition of one or more other features, steps, operations, elements, components, and / or combinations thereof. The method steps, processes, and operations described herein are not to be construed as necessarily requiring them to be performed in the particular order described or illustrated, unless the order of performance is expressly stated. It should also be understood that additional or alternative steps may be used.

[0077] Although the terms first, second, third, etc. may be used herein to describe multiple elements, components, regions, layers, and / or sections, these elements, components, regions, layers, and / or sections should not be limited by these terms. These terms may be used only to distinguish one element, component, region, layer, or section from another. Unless the context clearly indicates otherwise, terms such as "first", "second", and other numerical terms as used herein do not imply an order or sequence. Thus, the first element, component, region, layer, or section discussed below may be referred to as the second element, component, region, layer, or section without departing from the teachings of the example embodiments.

[0078] The foregoing are only specific embodiments of the present application, enabling those skilled in the art to understand or implement the present application. Various modifications to these embodiments will be obvious to those skilled in the art, and the general principles defined herein can be implemented in other embodiments without departing from the spirit or scope of the present application. Therefore, the present application will not be limited to the embodiments shown herein, but rather will be accorded the widest scope consistent with the principles and novel features claimed herein.

Claims

1. A hot pressing device, characterized in that: include: Base (1); A turntable module (2), the turntable module (2) comprising a turntable (21), the turntable (21) being rotatably disposed on the top of the base (1), the turntable (21) having a plurality of workpiece placement slots (211), the plurality of workpiece placement slots (211) being centrally symmetrically disposed with the rotation center of the turntable (21) as the center; A hot pressing module (3), wherein the hot pressing module (3) has a plurality of liftable hot pressing plates (31), the number of the workpiece placement slots (211) is n times the number of the hot pressing plates (31), and n is an integer greater than 1; the turntable (21) has a plurality of preset rotation positions, and at any of the preset rotation positions, any of the hot pressing plates (31) corresponds to a workpiece placement slot (211).

2. The hot pressing device according to claim 1, characterized in that: The base (1) is a box-shaped structure, and the turntable module (2) further comprises a driving component (22) drivingly connected to the turntable (21), wherein the driving component (22) is arranged inside the box-shaped structure.

3. The hot pressing device according to claim 2, characterized in that: The driving assembly (22) comprises a rotating driving member (221), a driving shaft (222), a main gear (223), a transmission shaft (224) and a secondary gear (225); the rotating driving member (221) is connected to the driving shaft (222); the driving shaft (222) and the main gear (223) are coaxially arranged; the transmission shaft (224) and the rotating disk (21) and the secondary gear (225) are coaxially arranged; the main gear (223) and the secondary gear (225) are meshed.

4. The hot pressing device according to claim 3, characterized in that: The upper and lower ends of the transmission shaft (224) are both rotatably connected to the base (1), and the base (1) is provided with a bearing (11) for connecting to the transmission shaft (224).

5. The hot pressing device according to any one of claims 2 to 4, characterized in that: The base (1) has a movably arranged box door (12); the box-shaped structure has a heat dissipation port (13), and a dustproof part is provided at the heat dissipation port (13).

6. The hot pressing device according to any one of claims 1 to 4, characterized in that: The hot pressing module (3) further comprises a frame (32) and a lifting assembly (33), wherein the frame (32) is mounted on the top of the base (1), the lifting assembly (33) is arranged on the frame (32), and the lifting assembly (33) is connected to the hot pressing plate (31).

7. The hot pressing device according to claim 6, characterized in that: The frame (32) is provided with a guide structure (321), the guide structure (321) extends in a vertical direction, and the lifting assembly (33) has a guide portion (331) matched with the guide structure (321).

8. The hot pressing device according to any one of claims 1 to 4, characterized in that: The hot pressing plate (31) has a heating cavity, in which a heating plate (311) and a temperature detection element (312) are arranged.

9. The hot pressing device according to claim 8, characterized in that: The hot pressing device further comprises a control module (4) and a display module (5), and the temperature detection element (312) and the display module (5) are both connected to the control module (4) by signals.

10. A lithium battery production system, characterized in that: It comprises a hot pressing device as claimed in any one of claims 1 to 9.

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