Manufacturing device and manufacturing method for all-solid-state battery cell, and all-solid-state battery cell

Abstract

The present application discloses a manufacturing device and manufacturing method for an all-solid-state battery cell, and an all-solid-state battery cell. The manufacturing device for the all-solid-state battery cell comprises a stacking table assembly, a hot-press lamination assembly, a rotary adhesive spraying assembly, and a control apparatus. The stacking table assembly is located upstream of the hot-press lamination assembly and the rotary adhesive spraying assembly; the hot-press lamination assembly is located upstream of the rotary adhesive spraying assembly, or the rotary adhesive spraying assembly is located upstream of the hot-press lamination assembly; the stacking table assembly is configured to stack different unit sheets to form an initial cell; the hot-press lamination assembly is configured to perform hot-press lamination; the rotary adhesive spraying assembly is configured to perform adhesive spraying and positioning; and the control apparatus is configured to control the stacking table assembly, the hot-press lamination assembly, and the rotary adhesive spraying assembly. By means of the coordination of the stacking table assembly, the hot-press lamination assembly, and the rotary adhesive spraying assembly, the present invention can stack different unit sheets together, and can also firmly bond different unit sheets into an integrated whole.

Description

Equipment and methods for manufacturing all-solid-state battery cells; all-solid-state battery cells Technical Field

[0001] This disclosure relates to the field of battery technology, and more specifically, to manufacturing equipment and methods for all-solid-state battery cells, and all-solid-state battery cells. Background Technology

[0002] Solid-state batteries are a new type of battery technology that uses solid electrolytes instead of traditional liquid electrolytes. Compared with traditional lithium-ion batteries, solid-state batteries have higher energy density, faster charging speed, higher safety and longer lifespan. However, the manufacturing methods for all-solid-state cells on the market are not yet perfect and lack mature processes.

[0003] Liquid lithium-ion battery cells contain positive electrode plates, negative electrode plates, and separators. Through Z-stacking using a lithium battery stacking machine, the positive and negative electrode plates are isolated and insulated by the separator. At the same time, the separator has a certain degree of adhesion, which can bond the entire cell together. However, all-solid-state battery cells only contain positive and negative electrode plate units and do not contain separators. Therefore, how to ensure the insulation between the positive and negative electrode plate units and how to bond the positive and negative electrode plate units into a whole has become a major problem to be solved in the manufacturing process of all-solid-state battery cells.

[0004] Currently, the cells for all-solid-state batteries on the market are generally manufactured manually or using semi-automatic equipment. This results in low production efficiency and an inability to guarantee production precision and consistency, making it a technical problem that urgently needs to be solved in this field. Summary of the Invention

[0005] This disclosure provides a manufacturing apparatus for an all-solid-state battery cell, which solves the problem in the prior art of how to ensure the insulation between the positive and negative electrode units in all-solid-state battery cells that only contain positive and negative electrode units and do not contain a separator.

[0006] In a first aspect, this application provides a manufacturing apparatus for all-solid-state battery cells, including a stacking stage assembly, a hot-pressing composite assembly, a rotary adhesive spraying assembly, and a control device, wherein the stacking stage assembly is located upstream of the hot-pressing composite assembly and the rotary adhesive spraying assembly; the hot-pressing composite assembly is located upstream of the rotary adhesive spraying assembly, or the rotary adhesive spraying assembly is located upstream of the hot-pressing composite assembly.

[0007] The stacking stage assembly is used to stack different unit wafers to form an initial battery cell, the hot pressing composite assembly is used for hot pressing composite, and the rotary glue spraying assembly is used for glue spraying positioning.

[0008] The control device is used to control the stacking stage assembly, the hot pressing lamination assembly, and the rotary adhesive spraying assembly.

[0009] In some embodiments of the first aspect of this application, the hot-pressed composite assembly includes a hydraulic system and a pressurizing component; the pressurizing component includes an upper pressurizing plate and a lower pressurizing plate disposed opposite to each other, the upper pressurizing plate being connected to the hydraulic system on the side away from the lower pressurizing plate, and heating cores being respectively disposed on the upper pressurizing plate and the lower pressurizing plate, the heating cores being used to generate heat; temperature sensors are evenly distributed on the upper pressurizing plate and the lower pressurizing plate, the temperature sensors being used to detect the temperature at different positions in the upper pressurizing plate and the lower pressurizing plate in real time; the hydraulic system, the heating cores, and the temperature sensors are respectively connected to a control device.

[0010] In some embodiments of the first aspect of this application, the rotary adhesive spraying assembly includes a rotating mechanism, an adhesive spraying mechanism, a first visual inspection mechanism, and an adhesive curing mechanism. The rotating mechanism is located below the adhesive spraying mechanism and the adhesive curing mechanism, and the first visual inspection mechanism is located above the adhesive spraying mechanism and the adhesive curing mechanism. The first visual inspection mechanism is used to take real-time pictures of the initial battery cell, the rotating mechanism is used to rotate the initial battery cell, the adhesive spraying mechanism is used to spray adhesive onto the rotated initial battery cell, and the adhesive curing mechanism is used to position the initial battery cell after adhesive spraying. The rotating mechanism, the adhesive spraying mechanism, the first visual inspection mechanism, and the adhesive curing mechanism are respectively connected to a control device.

[0011] In some embodiments of the first aspect of this application, the stacking stage assembly includes a second vision inspection mechanism, a cell stacking stage, and a cell clamping structure. The cell clamping structure is located above the cell stacking stage, and the second vision inspection mechanism is located on the side of the cell clamping structure away from the cell stacking stage. The second vision inspection mechanism is used to take real-time pictures of the positions of different cell wafers. The cell stacking stage is used to drive the cell clamping structure to move to the positions of different cell wafers along a first direction, a second direction, and a rotation direction. The first direction intersects the second direction, and the rotation direction is to rotate the cell stacking stage clockwise or counterclockwise. The cell clamping structure is used to stack different cell wafers and clamp the stacked cell wafers. The second vision inspection mechanism, the cell stacking stage, and the cell clamping structure are respectively connected to a control device.

[0012] In some embodiments of the first aspect of this application, the manufacturing equipment for all-solid-state battery cells further includes: a positive electrode unit preparation and conveying mechanism, a negative electrode unit preparation and conveying mechanism, a protective sheet preparation and conveying structure, a lower battery cell stacking robot, an upper battery cell buffer robot, and a buffer assembly, wherein the positive electrode unit preparation and conveying mechanism, the negative electrode unit preparation and conveying mechanism, and the protective sheet preparation and conveying structure are arranged in parallel; the lower battery cell stacking robot is located downstream of the stacking assembly and upstream of the upper battery cell buffer robot; the buffer assembly is located downstream of the upper battery cell buffer robot and upstream of the hot-pressing composite assembly, or the buffer assembly is located downstream of the upper battery cell buffer robot and upstream of the rotary adhesive spraying assembly; the positive electrode unit preparation and conveying mechanism, the negative electrode unit preparation and conveying mechanism, and the protective sheet preparation and conveying structure are respectively used to convey different unit sheets to the stacking assembly; the lower battery cell stacking robot is used to grasp the initial battery cell; the upper battery cell buffer robot is used to transfer the initial battery cell grasped by the lower battery cell stacking robot to the buffer assembly.

[0013] In some embodiments of the first aspect of this application, the manufacturing equipment for all-solid-state battery cells further includes: a battery cell transfer robot, a battery cell unloading robot, a battery cell pulling strap, and a battery cell unloading assembly; the battery cell transfer robot is located downstream of the buffer assembly and upstream of the hot-pressing composite assembly; or, the battery cell transfer robot is located downstream of the buffer assembly and upstream of the rotary glue spraying assembly; the battery cell unloading robot is located downstream of the hot-pressing composite assembly and upstream of the battery cell pulling strap and the battery cell unloading assembly; or, the battery cell unloading robot is located downstream of the rotary glue spraying assembly and upstream of the battery cell pulling strap and the battery cell unloading assembly; the battery cell pulling strap and the battery cell unloading assembly are intersecting; when the buffer assembly is upstream of the hot-pressing composite assembly, the battery cell transfer robot is used to transfer the initial battery cell placed in the buffer assembly to the hot-pressing composite station corresponding to the hot-pressing composite assembly; the battery cell unloading robot is used to transfer the initial battery cell after hot-pressing composite to the rotary glue spraying assembly. The system consists of a rotary glue spraying station corresponding to the component; when the buffer component is upstream of the rotary glue spraying component, the cell transfer robot is used to transfer the initial cell placed in the buffer component to the rotary glue spraying station corresponding to the rotary glue spraying component; the cell unloading robot is used to transfer the initial cell after hot pressing and lamination to the hot pressing and lamination station corresponding to the hot pressing and lamination component; when the cell unloading robot is downstream of the hot pressing and lamination component and upstream of the cell pull belt and the cell unloading component, the cell pull belt is used to transfer the unqualified initial cell after hot pressing and lamination to the waste port; the cell unloading component is used to transfer the qualified initial cell after hot pressing and lamination to the picking port; when the cell unloading robot is downstream of the rotary glue spraying component and upstream of the cell pull belt and the cell unloading component, the cell pull belt is used to transfer the unqualified initial cell after glue spraying and positioning to the waste port; the cell unloading component is used to transfer the qualified initial cell after glue spraying and positioning to the picking port.

[0014] In some embodiments of the first aspect of this application, both the positive electrode cell fabrication and conveying mechanism and the negative electrode cell fabrication and conveying mechanism include a first cell loading assembly, a first cell loading robot, a cell defect detection assembly, a cell positioning platform, and a cell transfer robot. The first cell loading robot is located downstream of the first cell loading assembly and upstream of the cell defect detection assembly. The cell positioning platform is located downstream of the cell defect detection assembly and upstream of the cell transfer robot. The cell transfer robot is located upstream of the stacking stage assembly. The first cell loading assembly is used to load cell sheets with different polarities. The first cell loading robot is used to pick up cell sheets with different polarities to a preset station. The cell defect detection assembly is used to detect cell sheets with different polarities. The cell positioning platform is used to position the detected cell sheets with different polarities. The cell transfer robot is used to pick up the positioned cell sheets with different polarities to the cell stacking stage.

[0015] In some embodiments of the first aspect of this application, the unit sheet includes a protective sheet; the protective sheet preparation and conveying structure includes a second unit feeding assembly and a second unit feeding robot, the second unit feeding robot being located downstream of the second unit feeding assembly and upstream of the stacking table assembly; the second unit feeding assembly is used to feed the protective sheet, and the second unit feeding robot is used to transfer the protective sheet to the stacking table assembly.

[0016] Secondly, this application also provides a method for manufacturing an all-solid-state battery cell. The method involves using an all-solid-state battery cell manufacturing equipment, which is the same equipment used in the first aspect of this application, to prepare the all-solid-state battery cell. A stacking assembly stacks different unit wafers in a preset order to form an initial battery cell. A hot-pressing composite assembly is used to composite the initial battery cell to form a composite battery cell. A rotary adhesive spraying assembly is used to spray adhesive onto the periphery of the composite battery cell to position it, thereby forming an all-solid-state battery cell. Alternatively, a rotary adhesive spraying assembly is used to spray adhesive onto the periphery of the initial battery cell to position it. The hot-pressing composite assembly is then used to composite the initial battery cell after adhesive positioning to form an all-solid-state battery cell.

[0017] Thirdly, this application also provides an all-solid-state battery cell, which is manufactured using all-solid-state battery cell manufacturing equipment, the same equipment used for all-solid-state battery cell manufacturing in the first aspect of this application; the all-solid-state battery cell includes a protection sheet, a negative electrode unit, and a positive electrode unit. The protection sheet includes an upper protection sheet and a lower protection sheet. The negative electrode unit includes a first negative electrode unit and a second negative electrode unit. The positive electrode unit is located between the first negative electrode unit and the second negative electrode unit. The lower protection sheet is located on the side of the first negative electrode unit away from the positive electrode unit, and the upper protection sheet is located on the side of the second negative electrode unit away from the positive electrode unit. Along the direction from the first negative electrode unit to the second negative electrode unit, both the first and second negative electrode units include negative electrode material and a first solid electrolyte located on both sides of the negative electrode current collector. Along the direction from the first negative electrode unit to the second negative electrode unit, the positive electrode unit includes positive electrode material and a second solid electrolyte located on both sides of the positive electrode current collector.

[0018] Of course, any product implementing this disclosure does not necessarily need to achieve all of the technical effects described above at the same time.

[0019] Other features and advantages of this disclosure will become clear from the following detailed description of exemplary embodiments with reference to the accompanying drawings. Attached Figure Description

[0020] The accompanying drawings, which are incorporated in and form part of this specification, illustrate embodiments of the invention and, together with their description, serve to explain the principles of the invention.

[0021] Figure 1 is a schematic diagram of the structure of a manufacturing equipment for an all-solid-state battery cell provided in this application;

[0022] Figure 2 is a schematic diagram of a unit sheet structure in one direction provided in this application;

[0023] Figure 3 is a structural schematic diagram of a hot-pressed composite component provided in this application;

[0024] Figure 4 is a logic block diagram of a hot-pressed composite component provided in this application;

[0025] Figure 5 is a structural schematic diagram of the rotating mechanism, the spraying mechanism, and the first vision inspection mechanism in a rotary glue spraying assembly provided in this application;

[0026] Figure 6 is a schematic diagram of the adhesive curing mechanism in a rotary spraying assembly provided in this application;

[0027] Figure 7 is a logic block diagram of a rotary adhesive spraying assembly provided in this application;

[0028] Figure 8 is a structural schematic diagram of a stacking stage assembly provided in this application;

[0029] Figure 9 is a schematic diagram of the structure of a positive electrode unit feeding assembly provided in this application;

[0030] Figure 10 is a structural schematic diagram of a face suction cup structure provided in this application;

[0031] Figure 11 is a schematic diagram of the structure of a positive electrode unit loading robot provided in this application;

[0032] Figure 12 is a schematic diagram of the structure of a unit sheet in another direction provided in this application;

[0033] Figure 13 is a schematic diagram of the structure of a unit sheet in another direction provided in this application. Detailed Implementation

[0034] Various exemplary embodiments of the present disclosure will now be described in detail with reference to the accompanying drawings. It should be noted that, unless otherwise specifically stated, the relative arrangement, numerical expressions, and values ​​of the components and steps set forth in these embodiments do not limit the scope of the invention.

[0035] It should be noted that similar labels and letters in the following figures indicate similar items; therefore, once an item is defined in one figure, it does not need to be discussed further in subsequent figures.

[0036] Referring to Figures 1 and 2, Figure 1 is a structural schematic diagram of a manufacturing equipment for an all-solid-state battery cell provided in this application; Figure 2 is a structural schematic diagram of a unit wafer in one direction provided in this application; this embodiment provides a manufacturing equipment for an all-solid-state battery cell, including a stacking stage assembly 1, a hot-pressing composite assembly 2, a rotary adhesive spraying assembly 3, and a control device 4, wherein the stacking stage assembly 1 is located upstream of the hot-pressing composite assembly 2 and the rotary adhesive spraying assembly 3; the hot-pressing composite assembly 2 is located upstream of the rotary adhesive spraying assembly 3, or the rotary adhesive spraying assembly 3 is located upstream of the hot-pressing composite assembly 2; the stacking stage assembly 1 is used to stack different unit wafers 9 to form an initial battery cell, the hot-pressing composite assembly 2 is used for hot-pressing composite, and the rotary adhesive spraying assembly 3 is used for adhesive spraying and positioning; the control device 4 is used to control the stacking stage assembly 1, the hot-pressing composite assembly 2, and the rotary adhesive spraying assembly 3.

[0037] The aforementioned equipment for manufacturing all-solid-state battery cells is used for manufacturing all-solid-state battery cells, including a stacking stage assembly 1, a hot-pressing composite assembly 2, and a rotary adhesive spraying assembly 3. The positional relationship between the stacking stage assembly 1, the hot-pressing composite assembly 2, and the rotary adhesive spraying assembly 3 is: stacking stage assembly 1 - hot-pressing composite assembly 2 - rotary adhesive spraying assembly 3, or, stacking stage assembly 1 - rotary adhesive spraying assembly 3 - hot-pressing composite assembly 2.

[0038] Different unit sheets 9 are stacked using a stacking assembly 1 to form an initial battery cell. The different unit sheets 9 may include positive electrode units 93, negative electrode units 92, and protective sheets 91. The number of negative electrode units 92 may be greater than the number of positive electrode units 93. Of course, depending on the actual situation, the number of positive electrode units 93 may be greater than the number of negative electrode units 92. This embodiment only illustrates the example that the number of negative electrode units 92 may be greater than the number of positive electrode units 93. For example, there are two protective sheets 91, two negative electrode units 92, and one positive electrode unit 93. The positive electrode unit 93 is located between the two negative electrode units 92. The protective sheets 91 are respectively laid on the side of the two negative electrode units 92 away from the positive electrode unit 93. The protective sheets 91 protect the negative electrode units 92 on the upper and lower surfaces of the membraneless battery cell.

[0039] As shown in Figures 1 and 2, when the hot-pressing composite assembly 2 is located upstream of the rotating adhesive spraying assembly 3, the hot-pressing composite assembly 2 includes a first working position. In the first working position, by pressurizing and heating the initial cell, the bonding materials on different unit pieces 9 (such as two protective pieces 91, two negative electrode units 92 and one positive electrode unit 93) in the initial cell are bonded together to form a composite cell.

[0040] As shown in Figure 5, the rotating adhesive spraying assembly 3 sprays adhesive on the sides of the qualified composite cell to form an insulating adhesive layer 35, so that the unit pieces 9 of different polarities in the composite cell are insulated from each other. The thickness of the insulating adhesive layer 35 can be 0.01-5mm.

[0041] When the hot-pressed composite component 2 is located upstream of the rotary adhesive spraying component 3, it can not only enhance the contact between different unit sheets 9, but also make them tightly bonded by applying temperature and pressure, reducing interface voids and thus improving ion transport efficiency. It can also ensure that the solid electrolyte is evenly distributed on the electrode surface, forming a uniform and tight interface layer, which helps to further optimize the contact between the electrolyte and the electrode, improve the overall performance of the battery, and ensure the safety and stability of the battery.

[0042] When the rotary adhesive spraying assembly 3 is located upstream of the hot-press composite assembly 2, the rotary adhesive spraying assembly 3 is used to spray adhesive to position the periphery of the initial battery cell to form an insulating adhesive layer 35, so that the unit pieces 9 of different polarities in the initial battery cell after adhesive spraying and positioning are mutually insulated. The thickness range of the insulating adhesive layer 35 can also be 0.01-5mm.

[0043] The hot-pressed composite assembly 2 includes a first working position. In the first working position, the initial cell after being positioned by spraying adhesive is pressurized and heated so that the bonding materials on different unit pieces 9 (such as two protective pieces 91, two negative electrode units 92 and one positive electrode unit 93) in the initial cell are bonded together to form an all-solid-state cell.

[0044] When the rotary adhesive spraying assembly 3 is located upstream of the hot-press composite assembly 2, it can not only achieve insulation, but also enhance the contact between different unit pieces 9, thereby improving the stability of the interface, which helps to improve the performance and life of the battery, while ensuring the stability and safety of the battery structure.

[0045] Control device 4 precisely controls the stacking table assembly 1, the hot pressing laminating assembly 2, and the rotary glue spraying assembly 3. By sending commands and receiving feedback, control device 4 ensures the coordinated operation of these components, achieving an efficient and precise automated production process, as shown in Figures 4 and 7. It should be noted that control device 4 can be a controller, specifically a YH-610 industrial computer.

[0046] Compared with the prior art, the all-solid-state battery cell manufacturing equipment provided in this embodiment achieves at least the following beneficial effects: The all-solid-state battery cell manufacturing equipment provided in this embodiment includes a stacking stage assembly 1, a hot-pressing composite assembly 2, a rotary adhesive spraying assembly 3, and a control device 4, wherein the stacking stage assembly 1 is located upstream of the hot-pressing composite assembly 2 and the rotary adhesive spraying assembly 3; the hot-pressing composite assembly 2 is located upstream of the rotary adhesive spraying assembly 3, or the rotary adhesive spraying assembly 3 is located upstream of the hot-pressing composite assembly 2; the stacking stage assembly 1 is used to stack different unit wafers 9 to form an initial battery cell; the hot-pressing composite assembly... 2 is used for hot-pressing composite, and the rotary adhesive spraying assembly 3 is used for adhesive spraying positioning; the control device 4 is used to control the stacking stage assembly 1, the hot-pressing composite assembly 2 and the rotary adhesive spraying assembly 3; by adopting the above scheme, through the mutual cooperation between the stacking stage assembly 1, the hot-pressing composite assembly 2 and the rotary adhesive spraying assembly 3, not only can different unit sheets 9 be stacked together, but different unit sheets 9 can also be firmly bonded into a whole. At the same time, the insulation between different unit sheets 9 in the composite cell or the initial cell can be improved, preventing short circuits and leakage, and improving the overall production efficiency and production precision of all-solid-state batteries.

[0047] In an optional embodiment, referring to Figures 1, 2, 3, and 4, Figure 3 is a structural schematic diagram of a hot-pressed composite assembly provided in this application; Figure 4 is a logic block diagram of a hot-pressed composite assembly provided in this application; the hot-pressed composite assembly 2 includes a hydraulic system 21 and a pressurizing component 22; the pressurizing component 22 includes an upper pressurizing plate 221 and a lower pressurizing plate 222 disposed opposite to each other, the upper pressurizing plate 221 being connected to the hydraulic system 21 on the side away from the lower pressurizing plate 222; heating cores 2210 are respectively disposed on the upper pressurizing plate 221 and the lower pressurizing plate 222, the heating cores 2210 being used to generate heat; temperature sensors 2211 are evenly distributed on the upper pressurizing plate 221 and the lower pressurizing plate 222, the temperature sensors 2211 being used to detect the temperature at different positions in the upper pressurizing plate 221 and the lower pressurizing plate 222 in real time; the hydraulic system 21, the heating cores 2210, and the temperature sensors 2211 are respectively connected to the control device 4.

[0048] Specifically, as shown in Figures 3 and 4, in the first working position, the hot-pressed composite assembly 2 includes a hydraulic system 21 and a pressurizing component 22. The upper pressurizing plate 221 and the lower pressurizing plate 222 are arranged opposite to each other and are parallel to each other. The initial battery cell is located on the lower pressurizing plate 222. The hydraulic system 21 provides power to the upper pressurizing plate 221, so that the upper pressurizing plate 221 can apply pressure to the lower pressurizing plate 222, so that the initial battery cell is placed between the upper pressurizing plate 221 and the lower pressurizing plate 222 for pressurization. For example, the hydraulic system 21 can provide a pressure of 0T-80T (tons). The pressure of the hydraulic system 21 can be adjusted to meet different process requirements.

[0049] Heating cores 2210 and temperature sensors 2211 are provided inside the upper pressure plate 221 and the lower pressure plate 222. The heating cores 2210 and temperature sensors 2211 are electrically connected. The heating cores 2210 are evenly distributed on the upper pressure plate 221 and the lower pressure plate 222. The heating cores 2210 in the upper pressure plate 221 and the lower pressure plate 222 can be controlled individually. The temperature sensors 2211 are arranged in multiple positions on the upper pressure plate 221 and the lower pressure plate 222. For example, the temperature sensors 2211 are arranged inside the upper pressure plate 221 and the lower pressure plate 222, or the temperature sensors 2211 are arranged on the side of the upper pressure plate 221 near the lower pressure plate 222 and the side of the lower pressure plate 222 near the upper pressure plate 221.

[0050] The temperature sensors 2211 in the upper pressure plate 221 and the lower pressure plate 222 detect the temperature at various points in the upper pressure plate 221 and the lower pressure plate 222 in real time and feed it back to the control device 4. The control device 4 can dynamically adjust the heat generation of the heating core 2210 in the upper pressure plate 221 and the heating core 2210 in the lower pressure plate 222 to form a closed-loop control, ensuring the uniformity of the temperature at various points in the upper pressure plate 221 and the lower pressure plate 222. The heating temperature range of the heating core 2210 is room temperature to 200℃, and the temperature control accuracy is ±1℃. The room temperature is a variable.

[0051] The aforementioned control device 4 controls the hydraulic system 21 to provide power, driving the upper pressure plate 221 to apply pressure to the lower pressure plate 222, placing the initial battery cell between the upper and lower pressure plates 221 and 222. Heating elements 2210 in both the upper and lower pressure plates 221 and 222 heat the initial battery cell, causing it to undergo hot pressing. During the hot pressing process, temperature sensors 2211 in both the upper and lower pressure plates 221 and 222 continuously monitor their temperatures to ensure precise temperature control. The control device 4, in coordination with the hydraulic system 21, heating elements 2210, and temperature sensors 2211, ensures the smooth operation of the hot pressing process. By employing this scheme, through precise temperature control and pressure application, efficient and high-quality hot pressing of the initial battery cell is achieved, improving the battery cell production efficiency.

[0052] In an optional embodiment, referring to Figures 1, 5, 6, and 7, Figure 5 is a structural schematic diagram of the rotating mechanism, the spraying mechanism, and the first visual inspection mechanism in a rotating adhesive spraying assembly provided in this application; Figure 6 is a structural schematic diagram of the adhesive curing mechanism in a rotating adhesive spraying assembly provided in this application; Figure 7 is a logic block diagram of a rotating adhesive spraying assembly provided in this application; in this embodiment, the rotating adhesive spraying assembly 3 includes a rotating mechanism 31, a spraying mechanism 32, a first visual inspection mechanism 33, and an adhesive curing mechanism 34. The rotating mechanism 31 is located below the spraying mechanism 32 and the adhesive curing mechanism 34, and the first visual inspection mechanism 33 is located above the spraying mechanism 32 and the adhesive curing mechanism 34; the first visual inspection mechanism 33 is used to take real-time pictures of the initial battery cell, the rotating mechanism 31 is used to rotate the initial battery cell, the spraying mechanism 32 is used to spray adhesive onto the rotated initial battery cell, and the adhesive curing mechanism 34 is used to position the sprayed initial battery cell; the rotating mechanism 31, the spraying mechanism 32, the first visual inspection mechanism 33, and the adhesive curing mechanism 34 are respectively connected to the control device 4.

[0053] Specifically, the control device 4 is configured to perform the following steps: rotate the initial battery cell using the rotating mechanism 31; receive the glue spraying information of the initial battery cell fed back by the first visual inspection mechanism 33; spray glue onto the initial battery cell using the glue spraying mechanism 32 according to the glue spraying information of the initial battery cell; and cure the initial battery cell after glue spraying using the glue curing mechanism 34 to form a fully solid battery cell.

[0054] The rotating mechanism 31 can be a rectangular structure that matches the initial battery cell. This rotating mechanism 31 can rotate the initial battery cell to ensure that insulating adhesive is sprayed onto all four sides of the initial battery cell, or to ensure that insulating adhesive is sprayed onto all four sides of the initial battery cell after adhesive application. The first visual inspection mechanism 33 can not only take real-time photos of the initial battery cell, but also detect the dimensions of the areas on each side of the initial battery cell that require adhesive application. These dimensions can be width and length. The real-time photo information and the dimensions of the adhesive application areas are fed back to the control device 4. The control device 4 controls the adhesive application position and amount of the adhesive application mechanism 32 to ensure the accuracy of the adhesive application. The first visual inspection mechanism 33 can also detect the state of the insulating adhesive coating on the four sides of the initial battery cell, preventing abnormal states such as missed coating, insufficient coating, or excessive adhesive overflow. Defective products are marked and moved to the waste area for further processing (such as waste discharge at point 0 of the battery cell pull strap). Based on the initial glue spraying information of the battery cell fed back by the first vision inspection agency 33, the control device 4 controls the glue spraying structure, dynamically adjusts the glue spraying trajectory and spraying amount in real time, and forms a high-precision closed-loop control to ensure the position accuracy and thickness consistency of the insulating glue layer 35 on the four sides of the initial battery cell.

[0055] The control device 4 controls the adhesive curing mechanism 34 to cure the sprayed battery cell into a fully solid battery cell. The adhesive can be UV-curable adhesive, hot melt adhesive, or resin adhesive, etc. Different curing methods can be used depending on the type and characteristics of the adhesive. In this embodiment, UV-curable adhesive or hot melt adhesive can be used to cure the initial battery cell after spraying. When UV-curable adhesive is used, a UV lamp is used to light-cur the initial battery cell after spraying; when hot melt adhesive is used, a cold air is used to accelerate the curing of the sprayed battery cell.

[0056] In an optional embodiment, continuing to refer to FIG5, the glue spraying mechanism 32 includes a glue cartridge 321 and a glue nozzle 322. A valve assembly 323 is connected between the glue cartridge 321 and the glue nozzle 322. The glue nozzle 322 is located on the side of the valve assembly 323 away from the glue cartridge 321. The glue nozzle 322 is used to spray glue onto the composite battery cell or the initial battery cell after glue spraying. The glue cartridge 321 is used to store insulating glue, and the glue nozzle 322 is used to spray the insulating glue to achieve insulation between the unit pieces 9 of different polarities in the composite battery cell or the initial battery cell after glue spraying. The valve assembly 323 plays a key control role in the glue spraying process, and can adjust the flow rate, pressure and spraying speed of the insulating glue. The valve assembly 323 can be a piezoelectric valve or a screw valve. The piezoelectric valve uses the piezoelectric effect to control the spraying of the insulating glue, which has the purpose of high precision and fast response. The screw valve pushes the glue by rotating the screw, which is suitable for occasions that require larger thrust and flow rate. The above-mentioned valve assembly 323 can be connected to the control device 4 to achieve precise glue spraying control. By adopting the above scheme, the precise spraying of insulating adhesive is achieved through the coordinated interaction between the glue cartridge 321, the valve assembly 323, and the glue nozzle 322.

[0057] In an optional embodiment, referring to Figures 1 and 8, Figure 8 is a structural schematic diagram of a stacking stage assembly provided by the present invention; the stacking stage assembly 1 includes a second visual inspection mechanism 11, a cell stacking stage 12 and a cell pressing structure 13, the cell pressing structure 13 is located above the cell stacking stage 12, and the second visual inspection mechanism 11 is located on the side of the cell pressing structure 13 away from the cell stacking stage 12.

[0058] The second visual inspection mechanism 11 is used to take real-time pictures of the positions of different unit pieces 9. The cell stacking platform 12 is used to drive the cell pressing structure 13 to move along a first direction (not shown in the figure), a second direction (not shown in the figure), and a rotation direction (not shown in the figure) to the positions of different unit pieces 9. The first direction and the second direction intersect, and the rotation direction is to rotate the cell stacking platform 12 clockwise or counterclockwise. The cell pressing structure 13 is used to stack different unit pieces 9 and press the stacked different unit pieces 9 together. The second visual inspection mechanism 11, the cell stacking platform 12, and the cell pressing structure 13 are respectively connected to... The control device 4 is connected and configured to perform the following steps: receiving position information of different unit pieces 9 fed back by the second vision inspection mechanism 11; according to the position information of different unit pieces 9, using the cell stacking platform 12 to drive the cell pressing structure 13 to move along the first direction, the second direction and the rotation direction to the position of different unit pieces 9, such as using the cell stacking platform 12 to drive the cell pressing structure 13 to move along the XYR direction to the position of different unit pieces 9; controlling the opening and closing of the cell pressing structure 13 according to the position of different unit pieces 9, and pressing the stacked unit pieces 9 until the initial cell is formed.

[0059] The cell stacking stage 12 can be an XYR three-axis displacement stacking stage, which can adopt the Zhongbang Precision LS125-LM three-axis platform. The equipment has high precision and stability and can meet the requirements for precise position control during the cell stacking process. The aforementioned cell clamping structure 13 is located above the cell stacking stage 12, and the second vision inspection mechanism 11 is used to take real-time pictures of the positions of different unit wafers 9.

[0060] As shown in Figures 1 and 2, the unit cell 9 includes a positive electrode unit 93, a negative electrode unit 92, and a protective sheet 91. The protective sheet 91 has an upper protective sheet 910 and a lower protective sheet 911. The positive electrode unit 93 is located between two negative electrode units 92. The protective sheets 91 are laid on the side of the negative electrode unit 92 away from the positive electrode unit 93, that is, there are two protective sheets 91, which are the bottom lower protective sheet 911 and the top upper protective sheet 910, respectively. When the manufacturing equipment for the all-solid-state battery cell also includes a second unit loading robot 72, a negative electrode unit transfer robot 552, and a positive electrode unit transfer robot 551, the second unit loading robot 72 is used to place the protective sheet 91 in the stacking position, the negative electrode unit transfer robot 552 is used to place the negative electrode unit 92 in the stacking position, and the positive electrode unit transfer robot 551 is used to place the positive electrode unit 93 in the stacking position.

[0061] The cell stacking platform 12 first moves to the stacking position of the protective sheet 91, the cell clamping structure 13 opens, and the second unit loading robot 72 places the bottom protective sheet 911 on the bottom layer of the cell stacking platform 12. The cell clamping structure 13 closes, the cell stacking platform 12 moves to the stacking position of the negative electrode unit 92, the cell clamping structure 13 opens, and the negative electrode unit transfer robot 552 places the negative electrode unit 92 on top of the lower protective sheet 911. The cell clamping structure 13 closes, clamping the negative electrode unit 92 and the lower protective sheet 911. The cell stacking platform 12 moves to the stacking position of the positive electrode unit 93, the second vision inspection mechanism 11 takes pictures to inspect the position of the negative electrode unit 92, the cell stacking platform 12 fine-tunes the position of the negative electrode unit 92, and the cell clamping structure 13 opens. The positive electrode unit transfer robot 551 places the positive electrode unit 93 on top of the negative electrode unit 92. The cell pressing structure 13 closes, pressing the positive electrode unit 93, the negative electrode unit 92, and the lower protective sheet 911. The cell stacking platform 12 returns to the stacking position of the negative electrode unit 9. The second vision inspection mechanism 11 takes a picture to detect the position of the negative electrode unit 92. The cell stacking platform 12 fine-tunes the position between the positive electrode unit 93, the negative electrode unit 92, and the lower protective sheet 911. Then the cell pressing structure 13 opens to stack the negative electrode... The positive electrode unit 93 and the negative electrode unit 91 are stacked in a cycle until the number of initial cells is required. Then they move to the stacking position of the protective sheet 91 and stack the topmost upper protective sheet 910. Finally, the cell stacking platform 12 moves the initial cells to the cell unloading position.

[0062] By utilizing the cooperation between the second vision inspection mechanism 11, the cell stacking platform 12, and the cell pressing structure 13, it is ensured that the bottom layer lower protection sheet 911, several positive electrode units 93, several negative electrode units 92, and the top layer upper protection sheet 910 are completely symmetrical or coincident in the vertical direction.

[0063] In an optional embodiment, continuing to refer to Figure 1, the manufacturing equipment for the all-solid-state battery cell in this embodiment further includes: a positive electrode unit preparation and conveying mechanism 5, a negative electrode unit preparation and conveying mechanism 6 (the structure of which is referenced from the positive electrode unit preparation and conveying mechanism 5 in Figure 1), a protective sheet preparation and conveying structure 7, a lower battery cell stacking robot a, an upper battery cell buffer robot b, and a buffer assembly 8, wherein...

[0064] The positive electrode unit preparation and conveying mechanism 5, the negative electrode unit preparation and conveying mechanism 6, and the protective sheet preparation and conveying structure 7 are arranged in parallel; the lower stacking robot a is located downstream of the stacking stage assembly 1 and upstream of the upper buffer robot b.

[0065] The buffer component 8 is located downstream of the buffer robot b on the battery cell and upstream of the hot-pressing composite component 2; or, the buffer component 8 is located downstream of the buffer robot b on the battery cell and upstream of the rotary adhesive spraying component 3.

[0066] The positive electrode cell preparation and conveying mechanism 5, the negative electrode cell preparation and conveying mechanism 6, and the protective sheet preparation and conveying structure 7 are used to convey different cell sheets 9 to the stacking stage assembly 1, respectively; the lower stacking stage robot a is used to grab the initial cell; the upper buffer robot b is used to transfer the initial cell grabbed by the lower stacking stage robot to the buffer assembly 8.

[0067] Specifically, this embodiment also takes the unit sheet 9, which includes a positive electrode unit 93, a negative electrode unit 92, and a protective sheet 91, as an example. The positive electrode unit preparation and conveying mechanism 5 conveys the positive electrode unit 93 to the stacking stage assembly 1, the negative electrode unit preparation and conveying mechanism 6 conveys the negative electrode unit 92 to the stacking stage assembly 1, and the protective sheet preparation and conveying structure 7 conveys the protective sheet 91 to the stacking stage assembly 1.

[0068] It should be noted that the positive electrode unit preparation and conveying mechanism 5, the negative electrode unit preparation and conveying mechanism 6, and the protective sheet preparation and conveying structure 7 are placed according to the initial cell stacking order. Among them, the negative electrode unit 92 and the positive electrode unit 93 are placed alternately, and the upper protective sheet 910 and the lower protective sheet 911 are placed on the top and bottom layers of the initial cell, respectively.

[0069] During the initial cell fabrication process, the positive electrode unit fabrication and conveying mechanism 5, the negative electrode unit fabrication and conveying mechanism 6, and the protective sheet fabrication and conveying structure 7 must be arranged according to the stacking order of the initial cell. Specifically, the aforementioned positive electrode unit fabrication and conveying mechanism 5, negative electrode unit fabrication and conveying mechanism 6, and protective sheet fabrication and conveying structure 7 should follow the actual stacking order of the initial cell. That is, first, the lower protective sheet 911 is conveyed using the protective sheet fabrication and conveying structure 7, then the negative electrode unit 92 is conveyed using the negative electrode unit fabrication and conveying mechanism 6, then the positive electrode unit 93 is conveyed using the positive electrode unit fabrication and conveying mechanism 5, then the negative electrode unit 92 is conveyed using the negative electrode unit fabrication and conveying mechanism 6, and finally, the upper protective sheet 910 is conveyed using the protective sheet fabrication and conveying structure 7 to avoid damage to the negative electrode unit 92. This conveying sequence ensures that each unit in the initial cell can be precisely assembled in a predetermined order and position, thereby guaranteeing the quality and performance of the cell. Of course, the conveying sequence of the positive electrode unit preparation and conveying mechanism 5 and the negative electrode unit preparation and conveying mechanism 6 can be adjusted according to the actual situation. This embodiment does not make specific limitations.

[0070] The initial battery cell is moved to the battery cell unloading position by the battery cell lower stacking robot a. The part of the battery cell lower stacking robot a that contacts the initial battery cell is treated with polyurethane material or rubber coating to prevent damage to the surface of different unit cells 9 in the initial battery cell.

[0071] The initial battery cell is picked up from the lower stacking robot a using the battery cell buffer robot b and placed into the buffer assembly 8. The part of the battery cell buffer robot b that contacts the initial battery cell is made of polyurethane material or coated with rubber to prevent damage to the outer surface of different unit sheets 9 in the initial battery cell. The buffer assembly 8 is used to buffer the initial battery cell. In order to avoid the complicated and time-consuming processes of the hot pressing composite assembly 2 and the rotary spraying assembly 3, the initial battery cell is temporarily stored by adding the buffer assembly 8.

[0072] By adopting the above scheme, the production efficiency of the initial battery cell can be improved through the cooperation of the positive electrode unit preparation and conveying mechanism 5, the negative electrode unit preparation and conveying mechanism 6, the protection sheet preparation and conveying structure 7, the lower stacking robot a, the upper buffer robot b, and the buffer component 8. This improves the production efficiency, production accuracy, and product consistency of the all-solid-state battery cell, making it suitable for the mass production of the initial battery cell.

[0073] In an optional embodiment, continuing to refer to FIG1, the manufacturing equipment for all-solid-state battery cells in this embodiment further includes: a battery cell transfer robot c, a battery cell unloading robot d, a battery cell pulling belt 0, and a battery cell unloading assembly e;

[0074] The cell transfer robot c is located downstream of the buffer assembly 8 and upstream of the hot-pressing composite assembly 2; or, the cell transfer robot c is located downstream of the buffer assembly 8 and upstream of the rotary glue spraying assembly 3.

[0075] The cell unloading robot d is located downstream of the hot-pressing composite component 2 and upstream of the cell pulling belt 0 and the cell unloading component e; or, the cell unloading robot d is located downstream of the rotary glue spraying component 3 and upstream of the cell pulling belt 0 and the cell unloading component e.

[0076] The cell pull strip 0 and the cell unloading assembly e are intersecting;

[0077] When the buffer component 8 is located upstream of the hot-pressing composite component 2, the cell transfer robot c is used to transfer the initial cell placed in the buffer component 8 to the hot-pressing composite station corresponding to the hot-pressing composite component 2; the cell unloading robot d is used to transfer the initial cell after hot-pressing composite to the rotary glue spraying station corresponding to the rotary glue spraying component 3.

[0078] When the buffer assembly 8 is located upstream of the rotary glue spraying assembly 3, the battery cell transfer robot c is used to transfer the initial battery cell placed in the buffer assembly 8 to the rotary glue spraying station corresponding to the rotary glue spraying assembly 3; the battery cell unloading robot d is used to transfer the initial battery cell after hot pressing and lamination to the hot pressing and lamination station corresponding to the hot pressing and lamination assembly 2.

[0079] When the battery cell unloading robot d is located downstream of the hot-pressing composite assembly 2 and upstream of the battery cell pull belt 0 and the battery cell unloading assembly e, the battery cell pull belt 0 is used to transfer the unqualified initial battery cells after hot-pressing composite to the waste port; the battery cell unloading assembly e is used to transfer the qualified initial battery cells after hot-pressing composite to the material receiving port.

[0080] When the battery cell unloading robot d is located downstream of the rotary glue spraying assembly 3 and upstream of the battery cell pull belt 0 and the battery cell unloading assembly e, the battery cell pull belt 0 is used to transfer the unqualified initial battery cells after glue spraying and positioning to the waste port; the battery cell unloading assembly e is used to transfer the qualified initial battery cells after glue spraying and positioning to the pick-up port.

[0081] Specifically, when the buffer component 8 is upstream of the hot-pressing composite component 2, the cell transfer robot c picks up the initial cell from the buffer component 8 and places it into the hot-pressing composite station corresponding to the hot-pressing composite component. The hot-pressing composite component performs hot-pressing composite on the initial cell. The cell transfer robot c then picks up the hot-pressed composite initial cell and places it into the rotary glue spraying station corresponding to the rotary glue spraying component 3 to form an all-solid-state cell. The cell unloading robot d then moves the qualified all-solid-state cells after rotary glue spraying. The cells are transported to the pallet (a container or platform for storing and transporting qualified solid-state cells) of the cell unloading assembly e, and then transferred to the picking port. Unqualified solid-state cells are then moved to the cell pull belt 0. The cell pull belt 0 can be a cell NG pull belt, which can be divided into two parallel structures or an upper and lower layer structure. For example, one cell NG pull belt holds unqualified composite cells that have been heat-pressed and laminated, and the other cell NG pull belt holds unqualified solid-state cells that have been rotary glued. The cells are then transferred to the waste port, where waste cells are periodically removed manually.

[0082] When the rotary glue spraying assembly 3 is upstream of the hot-pressing composite assembly 2, the cell transfer robot c picks up the initial cell from the buffer assembly 8 and places it into the rotary glue spraying station corresponding to the rotary glue spraying assembly 3. The rotary glue spraying assembly 3 performs glue spraying and positioning on the initial cell. The cell transfer robot c then picks up the glue-positioned initial cell and places it into the hot-pressing composite station corresponding to the hot-pressing composite component. After the hot-pressing composite component completes the hot-pressing composite of the glue-positioned initial cell, a fully solid-state cell is formed. The fully solid-state cell is then short-circuited. After inspection and thickness testing, the qualified solid-state battery cells are transported to the tray of the battery cell unloading component e (a container or platform for storing and transporting qualified solid-state battery cells) using the battery cell unloading robot d. The unqualified solid-state battery cells are transported to the battery cell pull belt 0. The battery cell pull belt 0 can be a battery cell NG pull belt, which can be divided into two parallel structures or an upper and lower layer structure. For example, one battery cell NG pull belt is used to place unqualified battery cells that are rotated and glued, and another battery cell NG pull belt is used to place unqualified battery cells that are hot-pressed and laminated. They are then transferred to the waste port, where the waste battery cells are periodically removed by humans.

[0083] It should be noted that the parts of the battery cell transfer robot c that come into contact with the initial battery cell and the parts of the battery cell transfer robot c that come into contact with the composite battery cell are all treated with polyurethane material or encapsulation to prevent damage to the surfaces of different unit sheets 9 in the initial battery cell and the composite battery cell.

[0084] By adopting the above solution, through the coordinated operation of the buffer component 8, the hot-pressing composite component 2, the rotary glue spraying component 3, the cell transfer robot c, the cell unloading robot d, the cell pulling belt 0, and the cell unloading component e, qualified all-solid-state cells can be promptly transported to the tray of the cell unloading component e, while unqualified all-solid-state cells can be transported to the cell pulling belt 0. This improves the production efficiency, production accuracy, and product consistency of all-solid-state cells, making it suitable for the mass production of initial cells.

[0085] It should be noted that, continuing to refer to Figure 1, the above-mentioned positive electrode unit preparation and conveying mechanism 5, negative electrode unit preparation and conveying mechanism 6, protective sheet preparation and conveying structure 7, cell lower stacking robot a, cell upper buffer robot b, buffer assembly 8, cell transfer robot c, cell unloading robot d, and cell pulling belt 0 are respectively mounted on the frame f. To facilitate subsequent maintenance of these components, a maintenance channel h can be opened on the frame f. When the hot-pressing composite assembly 2 is located upstream of the rotating adhesive spraying assembly 3, this maintenance channel h can... The maintenance channel h is located between the hot-pressing composite component 2 and the battery cell buffer robot b. When the rotating glue spraying component 3 is located upstream of the hot-pressing composite component 2, the maintenance channel h can be located between the rotating glue spraying component 3 and the battery cell buffer robot b. The maintenance channel h facilitates the maintenance and repair of the above-mentioned positive electrode unit preparation and conveying mechanism 5, negative electrode unit preparation and conveying mechanism 6, protective sheet preparation and conveying structure 7, battery cell lower stacking robot a, battery cell transfer robot c, battery cell unloading robot d, battery cell pulling belt 0, and battery cell unloading component e.

[0086] In an optional embodiment, referring to Figures 1, 2, and 9-11, Figure 9 is a structural schematic diagram of a positive electrode unit loading assembly provided in this application; Figure 10 is a structural schematic diagram of a surface suction cup structure provided in this application; Figure 11 is a structural schematic diagram of a positive electrode unit loading robot provided in this application; in this embodiment, both the positive electrode unit preparation and conveying mechanism 5 and the negative electrode unit preparation and conveying mechanism 6 include a first unit loading assembly 51, a first unit loading robot 52, a unit defect detection assembly 53, a unit positioning platform 54, and a unit transfer robot 55;

[0087] The first unit loading robot 52 is located downstream of the first unit loading assembly 51 and upstream of the unit defect detection assembly 53; the unit positioning platform 54 is located downstream of the unit defect detection assembly 53 and upstream of the unit transfer robot 55; the unit transfer robot 55 is located upstream of the stacking table assembly 1.

[0088] The first unit loading component 51 is used to load unit wafers 9 with different polarities; the first unit loading robot 52 is used to pick up the unit wafers 9 with different polarities and place them at a preset station; the unit defect detection component 53 is used to detect the unit wafers 9 with different polarities; the unit positioning platform 54 is used to position the unit wafers 9 with different polarities after detection; and the unit transfer robot 55 is used to pick up the positioned unit wafers 9 with different polarities and place them at the cell stacking platform 12.

[0089] Specifically, continuing to refer to FIG1, the first unit feeding assembly 51 includes a positive electrode unit feeding assembly 510 and a negative electrode unit feeding assembly 511. The positive electrode unit feeding assembly 510 is used to feed the positive electrode unit 93, and the negative electrode unit feeding assembly 511 is used to feed the negative electrode unit 92, in preparation for stacking into an initial cell.

[0090] Referring to Figure 9, both the positive electrode unit loading assembly 510 and the negative electrode unit loading assembly 511 include a first upper tray position 5101, a conveying track 5102 and a first lower tray position 5103. The first upper tray position 5101 is the docking position between the manufacturing equipment and the outside world for loading and unloading, and the first lower tray position 5103 is the loading and unloading position inside the manufacturing equipment.

[0091] The aforementioned preset workstations include a defect detection workstation and a positioning platform workstation.

[0092] The aforementioned first unit loading robot 52 includes a positive electrode unit loading robot 521 and a negative electrode unit loading robot 522. The positive electrode unit loading robot 521 can not only pick up the positive electrode unit 93 from the first lower tray position 5103 to the positive electrode unit 93 defect detection station, but also pick up the positive electrode unit 93 from the positive electrode unit 93 defect detection station to the positioning platform station; the negative electrode unit loading robot 522 can not only pick up the negative electrode unit 92 from the first lower tray position 5103 to the negative electrode unit 92 defect detection station, but also pick up the negative electrode unit 92 from the negative electrode unit 92 defect detection station to the positioning platform station.

[0093] The positive electrode unit loading assembly 510 and the negative electrode unit loading assembly 511 have the same structure, and the positive electrode unit loading robot 521 and the negative electrode unit loading robot 522 have the same structure. The following is an example using the positive electrode unit loading assembly 510 and the positive electrode unit loading robot 521:

[0094] Referring to Figure 9, the tray containing the positive electrode unit 93 is manually or mechanically moved to the first upper tray position 5101. The tray containing the positive electrode unit 93 is then transported to the first lower tray position 5103 via the conveyor rail 5102. After the positive electrode unit 93 is used up, the tray containing the positive electrode unit 93 is returned from the first lower tray position 5103 to the first upper tray position 5101 along the conveyor rail 5102. The empty tray leaves the preparation equipment, and a new tray fully loaded with materials (such as the positive electrode unit 93) is placed in the first upper tray position 5101. The process is repeated.

[0095] The aforementioned conveying track 5102 can be a linear guide, an electric cylinder, or a pneumatic cylinder. The linear guide is used to provide linear motion and precisely control the position and movement trajectory of the tray of the positive electrode unit 93. The electric cylinder, through a linear actuator driven by a motor, can precisely control the stroke and speed. The pneumatic cylinder generates linear motion through pneumatic drive, pushing the object to move in a straight line.

[0096] Each part of the first upper tray position 5101, the conveying track 5102, and the first lower tray position 5103 also includes a detection structure (not shown in the figure), such as a position detection sensor. The position detection sensor can be a PM-T65 series photoelectric sensor. For example, the first upper tray position 5101 needs to detect whether there is a positive electrode unit 93 in the tray of the positive electrode unit 93; the conveying track 5102 needs to detect whether there is a tray of the positive electrode unit 93 and whether the tray of the positive electrode unit 93 is in place; and the first lower tray position 5103 needs to detect whether the tray of the positive electrode unit 93 is in place.

[0097] To detect whether there is a positive electrode unit 93 in the tray of the positive electrode unit 93, a color sensor can also be used. For example, a color sensor can be used to detect the copper and aluminum tabs in the positive electrode unit 93. Copper is yellow and aluminum is white. The color sensor can be a Keyence RGB digital fiber optic sensor, model CZ-V20 series. This Keyence RGB digital fiber optic sensor has high-precision color recognition and multi-color discrimination.

[0098] It should be noted that a cell unloading component e is also installed downstream of the cell unloading robot d. The cell unloading component e has the same structure as the positive electrode unit loading component 510. The cell unloading robot d will place the qualified cells on the second upper tray position (not marked in the figure). After the tray is full, it will move to the second lower tray position, and the full tray will be removed manually or mechanically, and then an empty tray will be placed on it.

[0099] Referring again to Figure 11, both the positive electrode unit loading robot 521 and the negative electrode unit loading robot 522 include a square tube frame 5210, a servo cylinder 5211, and a sub-loading robot 5212. The square tube frame 5210 is equipped with horizontal and vertical servo cylinders 5211. The sub-loading robot 5212 is mounted on the servo cylinders 5211. The servo cylinders 5211 drive the first robot to move left and right and up and down. The sub-loading robot 5212 mainly includes a surface suction cup structure 52120 and a vacuum generator.

[0100] The vacuum generator model can be FESTO OVEM-10-HB-QO-CE-N-2P.

[0101] Referring again to Figure 10, the aforementioned suction cup structure 52120 is used to grip and place the positive electrode unit 93. It includes an air inlet 52120a, a suction cup base plate 52120b, and a suction cup flexible layer 52120c. The suction cup base plate 52120b and the suction cup flexible layer 52120c are parallel to each other. The suction cup base plate 52120b is a hollow cuboid and has a cavity (not shown in the figure). The bottom surface of the suction cup base plate 52120b is open. An opening is provided, and the suction cup flexible layer 52120c covers the suction cup base plate 52120b corresponding to the opening. The side of the suction cup base plate 52120b has an air inlet 52120a that communicates with the cavity. The suction cup flexible layer 52120c has several air holes 52120d. The air holes 52120d penetrate the suction cup flexible layer 52120c in the direction from the suction cup flexible layer 52120c to the suction cup base plate 52120b. The air holes 52120d are arranged in a matrix.

[0102] The aforementioned gas interface 52120a can be connected to a compressed gas circuit and a vacuum generator (not shown in the figure).

[0103] The suction cup base plate 52120b has a cavity in the middle (not shown in the figure), an air inlet 52120a on the side, and an air hole 52120d on the bottom. The suction cup base plate 52120b can be made of aluminum, iron, stainless steel or plastic. This embodiment does not make specific limitations on this.

[0104] The aforementioned suction cup flexible layer 52120c has a relatively brittle solid electrolyte layer on the surface of the positive electrode unit 93, which is easily broken. When the first robotic arm picks up and places the positive electrode unit 93, it must ensure flexible contact with the positive electrode unit 93. The positive electrode unit 93 moves smoothly without bending or flipping. The suction cup flexible layer 52120c can be made of non-metallic materials, such as polyurethane or sponge. Of course, other elastic non-metallic materials can also be used depending on the actual situation. This embodiment does not make specific limitations on this. The suction cup flexible layer 52120c is pasted on the suction cup base plate 52120b.

[0105] When the positive electrode unit 93 is grasped by the aforementioned air hole 52120d, the vacuum generator works, creating a negative pressure in the cavity of the suction cup base plate 52120b. The positive electrode unit 93 is adsorbed through the air hole 52120d. When the positive electrode unit 93 is placed, the compressed gas path blows positive pressure gas into the cavity of the suction cup base plate 52120b, blowing the positive electrode unit 93 off through the air hole 52120d.

[0106] The unit defect detection component 53 includes a positive electrode unit defect detection component 531 and a negative electrode unit defect detection component 532. The positive electrode unit loading robot 521 picks up the positive electrode unit 93 and places it at the defect detection station corresponding to the positive electrode unit defect detection component 531. The defect detection station has a third-vision inspection mechanism (not shown in the figure) that inspects the surface of the positive electrode unit 93 to detect defects such as bumps, dents, missing foil, and scratches. First, the front side of the positive electrode unit 93 is inspected. After inspection, a structure that can flip the positive electrode unit 93 is used, such as an inverted vacuum belt or a rotary cylinder, to rotate the positive electrode unit 93 180°. Then, the back side of the positive electrode unit 93 is inspected. Defective products are marked, and the inspection data is uploaded to the system for storage and recording, facilitating traceability. A waste bin is placed next to the defect detection station. Defective products are placed in the waste bin by the positive electrode unit loading robot 521 during unloading.

[0107] The negative electrode unit loading robot 522 picks up the negative electrode unit 92 and places it at the defect detection station corresponding to the negative electrode unit defect detection component 532. The defect detection station has a third-vision inspection mechanism that inspects the surface of the negative electrode unit 92 for defects such as bumps, dents, missing foil, and scratches. First, the front of the negative electrode unit 92 is inspected. After inspection, a structure that can flip the negative electrode unit 92 is used, such as an inverted vacuum belt or a rotary cylinder, to rotate it 180°. Then, the back of the negative electrode unit 92 is inspected. Defective products are marked, and the inspection data is uploaded to the system for storage and recording, facilitating traceability. A waste bin is placed next to the defect detection station; defective products are placed in the waste bin by the negative electrode unit loading robot 522 during unloading.

[0108] The unit positioning platform 54 includes a positive electrode unit positioning platform 541 and a negative electrode unit positioning platform 542, wherein,

[0109] The positive electrode unit loading robot 521 picks up the positive electrode unit 93 from the defect detection station and places it onto the positive electrode unit positioning platform 541. The positive electrode unit positioning platform 541 is an automated XYR three-axis displacement platform that can adjust the position of the positive electrode unit 93 along the X, Y, and R (rotation) directions. Above the station is a fourth vision inspection structure (such as an industrial camera, which can be a CCD camera, not shown in the figure). The fourth vision inspection mechanism takes pictures to detect the position information of the positive electrode unit 93 and transmits it to the control device 4. The position is compared with that of the standard positive electrode unit 93. Then, the control device 4 controls the movement of the XYR three-axis displacement platform to adjust the position of the positive electrode unit 93 along the X, Y, and R axes to ensure the accurate position of the positive electrode unit 93 and improve the subsequent stacking accuracy.

[0110] The negative electrode unit loading robot 522 picks up the negative electrode unit 92 from the defect detection station and places it onto the negative electrode unit positioning platform 542. The negative electrode unit positioning platform 542 is an automated XYR three-axis displacement platform that can adjust the position of the negative electrode unit 92 along the X, Y, and R (rotation) directions. Above the station is a fourth vision inspection structure (such as an industrial camera) that takes pictures to detect the position information of the negative electrode unit 92 and transmits it to the control device 4. The position is compared with that of the standard negative electrode unit 92. Then, the control device 4 controls the movement of the XYR three-axis displacement platform to adjust the position of the negative electrode unit 92 along the X, Y, and R axes to ensure the accurate position of the negative electrode unit 92 and improve the subsequent stacking accuracy.

[0111] The XYR three-axis displacement platform mentioned above can be model LS125-LM. Of course, other models can also be used depending on the actual situation. This embodiment does not make specific limitations on this.

[0112] It should be noted that: in this embodiment, the first visual inspection mechanism 33, the second visual inspection mechanism 11, the third visual inspection mechanism and the fourth visual inspection mechanism can all be industrial cameras, the model of which is MV-13MG. The above-mentioned industrial cameras can be CCD cameras.

[0113] The unit transfer robot 55 includes a positive electrode unit transfer robot 551 and a negative electrode unit transfer robot 552. The positive electrode unit transfer robot 551 is used to pick up the positive electrode unit 93 from the positive electrode unit positioning platform 541 and place it onto the cell stacking platform 12 in the stacking assembly 1. The positive electrode unit transfer robot 551 has the same structure as the positive electrode unit loading robot 521. The negative electrode unit transfer robot 552 is used to pick up the negative electrode unit 92 from the negative electrode unit positioning platform 542 and place it onto the cell stacking platform 12 in the stacking assembly 1. The negative electrode unit transfer robot 552 has the same structure as the negative electrode unit loading robot 522.

[0114] By coordinating the positive electrode unit loading assembly 510, the positive electrode unit loading robot 521, the positive electrode unit defect detection assembly 531, the positive electrode unit positioning platform 541, and the positive electrode unit transfer robot 551, the efficiency and accuracy of the positive electrode unit 93 processing can be ensured, improving the production efficiency and product quality of all-solid-state cells. This can be understood as: not only ensuring the positional accuracy of the positive electrode during the stacking process, thereby improving the quality and performance of the initial cells, but also accurately completing the conveying and stacking of the positive electrode unit 93, reducing the time required for manual operation, thereby reducing labor intensity, and avoiding errors and damage caused by human factors.

[0115] By coordinating the negative electrode unit loading assembly 511, the negative electrode unit loading robot 522, the negative electrode unit defect detection assembly 532, the negative electrode unit positioning platform 542, and the negative electrode unit transfer robot 552, the efficiency and accuracy of the negative electrode unit 92 processing can be ensured, improving the production efficiency and product quality of all-solid-state cells. This can be understood as: not only ensuring the positional accuracy of the negative electrode during the stacking process, thereby improving the quality and performance of the initial cells, but also accurately completing the conveying and stacking of the negative electrode unit 92, reducing the time required for manual operation, thereby reducing labor intensity, and avoiding errors and damage caused by human factors.

[0116] In one alternative embodiment, unit piece 9 includes a protective piece 91;

[0117] The protective sheet preparation and conveying structure 7 includes a second unit feeding component 71 and a second unit feeding robot 72. The second unit feeding robot 72 is located downstream of the second unit feeding component 71 and upstream of the stacking table component 1. The second unit feeding component 71 is used to feed the protective sheet 91, and the second unit feeding robot 72 is used to transfer the protective sheet 91 to the stacking table component 1.

[0118] The aforementioned second unit feeding assembly 71 can be a protective sheet 91 feeding assembly. The structure of the protective sheet 91 feeding assembly is the same as that of the positive electrode unit feeding assembly 510, and will not be described again here. The aforementioned second unit feeding robot 72 can be a second unit feeding robot 72. The structure of the second unit feeding robot 72 is the same as that of the positive electrode unit feeding robot 521, and will not be described again here.

[0119] By adopting the above scheme, through the cooperation between the second unit feeding component 71 and the second unit feeding robot 72, the second unit feeding robot 72 can accurately place the protective sheet 91 in the designated position, ensuring the smooth progress of subsequent processes, reducing quality problems caused by position deviation, and realizing fast and accurate feeding operations, shortening the cycle time of each process, thereby improving the overall production line output rate.

[0120] Example 2, continuing to refer to Figures 1 and 2, this example provides a method for manufacturing an all-solid-state battery cell. The all-solid-state battery cell is prepared using an all-solid-state battery cell manufacturing equipment, which is the same as described above. A stacking assembly 1 stacks different unit wafers 9 according to a preset order to form an initial battery cell. A hot-pressing composite assembly 2 is used to composite the initial battery cell to form a composite battery cell. A rotary adhesive spraying assembly 3 is used to spray adhesive onto the periphery of the composite battery cell to position it, thereby forming an all-solid-state battery cell. Alternatively, the rotary adhesive spraying assembly 3 can be used to spray adhesive onto the periphery of the initial battery cell to position it. The hot-pressing composite assembly 2 is then used to composite the initial battery cell after adhesive positioning to form an all-solid-state battery cell.

[0121] Specifically, as shown in Figures 1 and 2, when the hot-pressing composite assembly 2 is located upstream of the rotating adhesive spraying assembly 3, the hot-pressing composite assembly 2 includes a first working position. In the first working position, by pressurizing and heating the initial cell, the bonding materials on different unit pieces 9 (such as two protective pieces 91, two negative electrode units 92 and one positive electrode unit 93) in the initial cell are bonded together to form a composite cell.

[0122] In some embodiments of this application, the hot-pressed composite assembly 2 further includes a second working position. After the initial battery cell is pressurized and heated, it is transferred to the second working position. In the second working position, the composite battery cell is subjected to short-circuit detection and thickness detection. Unqualified composite battery cells are marked and moved to the waste area for further processing. Specifically, in the second working position, a short-circuit testing mechanism is used to perform short-circuit detection on the composite battery cell, and a thickness detection mechanism is used to perform thickness detection on the composite battery cell. The short-circuit testing mechanism and the thickness detection mechanism are used to detect whether the composite battery cell is short-circuited and whether the thickness exceeds the standard. Unqualified composite battery cells are marked and moved to the waste area for further processing.

[0123] The aforementioned short-circuit testing mechanism can be an insulation resistance tester, and the model of the insulation resistance tester can be the ANBTS7101 series from Aino Instruments. The thickness detection mechanism can be a thickness sensor, such as the LJ-X8000 series sensor from Keyence.

[0124] The rotating adhesive spraying assembly 3 sprays adhesive on the sides of the qualified composite cell to form an insulating adhesive layer 35 (as shown in Figure 5), so that the unit pieces 9 of different polarities in the composite cell are insulated from each other. The thickness of the insulating adhesive layer 35 can be 0.01-5mm.

[0125] When the rotary adhesive spraying assembly 3 is located upstream of the hot-pressing composite assembly 2, the rotary adhesive spraying assembly 3 sprays adhesive to position the periphery of the initial battery cell to form an insulating adhesive layer 35, so that the unit pieces 9 of different polarities in the initial battery cell after adhesive spraying and positioning are mutually insulated. The thickness range of the insulating adhesive layer 35 can also be 0.01-5mm.

[0126] The hot-pressed composite assembly 2 includes a first working position. In the first working position, the initial cell after being positioned by spraying adhesive is pressurized and heated so that the bonding materials on different unit pieces 9 (such as two protective pieces 91, two negative electrode units 92 and one positive electrode unit 93) in the initial cell are bonded together to form an all-solid-state cell.

[0127] In some embodiments of this application, the hot-pressed composite assembly 2 further includes a second working position, where the all-solid-state battery cell is transferred to the second working position. At the second working position, short-circuit detection and thickness detection are performed on the all-solid-state battery cell, and unqualified all-solid-state battery cells are marked and moved to the waste area for further processing. It should be noted that the order of the hot-pressed composite assembly 2 and the rotary adhesive spraying assembly 3 can be appropriately adjusted according to different manufacturing processes; this embodiment does not impose specific limitations.

[0128] The aforementioned different unit sheets 9 include a protective sheet 91, a positive electrode unit 93, and a negative electrode unit 92. The protective sheet 91 includes an upper protective sheet 910 and a lower protective sheet 911. In this embodiment, the number of negative electrode units 92 is greater than the number of positive electrode units 93. The positive electrode units 93 are located between adjacent negative electrode units 92. The uppermost negative electrode unit 92 and the lowermost negative electrode unit 92 are respectively stacked with the upper protective sheet 910 and the lower protective sheet 911 on the side away from the positive electrode unit 93. The lower protective sheet is manufactured using the above method. 911, the first negative electrode unit 921, the positive electrode unit 93, the second negative electrode unit 922, and the upper protective sheet 910 are stacked to form an initial battery cell. The upper protective sheet 910 and the lower protective sheet 911 protect the unit sheets 9 on the upper and lower surfaces of the initial battery cell without a separator. The initial battery cell is bonded into a composite battery cell by the hot-pressing composite assembly 2. The composite battery cell is positioned by spraying glue on each side using the rotating glue spraying assembly 3 to form a fully solid battery cell. This ensures the insulation between different unit sheets 9 in the fully solid battery cell, thereby producing a high-quality fully solid battery cell.

[0129] Using the above manufacturing method, the lower protective sheet 911, negative electrode unit 92, positive electrode unit 93, negative electrode unit 92 and upper protective sheet 910 are formed into an initial battery cell. The upper protective sheet 910 and lower protective sheet 911 protect the unit sheets 9 on the upper and lower surfaces of the initial battery cell without a separator. First, the initial battery cell is positioned by spraying glue on each side using the rotating glue spraying assembly 3 to ensure the insulation between different unit sheets 9 in the initial battery cell after glue spraying and positioning. Then, the all-solid-state battery cell is composited by the hot pressing composite assembly 2 to form an all-solid-state battery cell. Preferably, the all-solid-state battery cell is tested to produce a high-quality all-solid-state battery cell.

[0130] In some embodiments of this application, before the stacking stage assembly 1 stacks different unit sheets 9 in a preset order to form an initial battery cell, it further includes: using a positive electrode unit preparation and conveying mechanism 5, a negative electrode unit preparation and conveying mechanism 6, and a protective sheet preparation and conveying structure 7 to transfer different unit sheets 9 to the stacking stage assembly 1.

[0131] Example 3, referring to Figures 2 and 12-13, Figure 12 is a schematic diagram of a unit cell structure in another direction provided in this application; Figure 13 is a schematic diagram of a unit cell structure in yet another direction provided; this embodiment provides an all-solid-state battery cell, manufactured using an all-solid-state battery cell fabrication equipment, which is the all-solid-state battery cell fabrication equipment described above; the all-solid-state battery cell includes a protection sheet 91, a negative electrode unit 92, and a positive electrode unit 93. The protection sheet 91 includes an upper protection sheet 910 and a lower protection sheet 911, and the negative electrode unit 92 includes a first negative electrode unit 921 and a second negative electrode unit 922, wherein the positive electrode unit 93 is located at... Between the first negative electrode unit 921 and the second negative electrode unit 922, the lower protective sheet 911 is located on the side of the first negative electrode unit 921 away from the positive electrode unit 93, and the upper protective sheet 910 is located on the side of the second negative electrode unit 922 away from the positive electrode unit 93; along the direction from the first negative electrode unit 921 to the second negative electrode unit 922, both the first negative electrode unit 921 and the second negative electrode unit 922 include negative electrode material and a first solid electrolyte located on both sides of the negative electrode current collector 9212; along the direction from the first negative electrode unit 921 to the second negative electrode unit 922, the positive electrode unit 93 includes positive electrode material and a second solid electrolyte located on both sides of the positive electrode current collector.

[0132] Referring to Figures 2 and 13, the all-solid-state battery cell includes a protective sheet 91, a negative electrode unit 92, and a positive electrode unit 93. The protective sheet 91, negative electrode unit 92, and positive electrode unit 93 are different unit sheets 9. The protective sheet 91 includes a lower protective sheet 911 and an upper protective sheet 910. In this embodiment, only two negative electrode units 92, one positive electrode unit 93, one upper protective sheet 910, and one lower protective sheet 911 are used as examples. For example, the lower protective sheet 911, the first negative electrode unit 921, the positive electrode unit 93, the second negative electrode unit 922, and the upper protective sheet 910 are stacked sequentially from bottom to top. There are several negative electrode units 92 and several positive electrode units 93. The number of negative electrode units 92 is greater than the number of positive electrode units 93, so that the battery has a higher energy density. It should be noted that: the size of the upper protective sheet 910 is the same as that of the lower protective sheet 911, the size of the positive electrode unit 93 is the same as that of the negative electrode unit 92, the size of the upper protective sheet 910 is a, the size of the positive electrode unit 93 is b, and a is greater than b.

[0133] In some embodiments of this application, if 'a' is too small, the manufacturing precision requirements become too high, making it difficult to process; if 'a' is too large, it not only wastes volume but also results in low battery energy density. In some embodiments of this application, 'a' is greater than 'b' by 0.01mm-5mm, which not only reduces processing costs and avoids volume waste but also increases battery energy density.

[0134] Referring to Figure 8, during stacking, the second visual inspection mechanism 11, the cell stacking platform 12, and the cell clamping structure 13 work together to align the centers of the lower protective sheet 911, the negative electrode unit 92, the positive electrode unit 93, and the upper protective sheet 910, avoiding errors in the stacking positions of different unit sheets 9 and ensuring the accuracy of the stacking positions of different unit sheets 9. It should be noted that the above dimensions include both length and width dimensions.

[0135] Referring to Figure 12, the following is an example of a lower protective sheet 911, a first negative electrode unit 921, a positive electrode unit 93, a second negative electrode unit 922, and an upper protective sheet 910 stacked from bottom to top. The negative electrode material includes a first negative electrode material 9211 and a second negative electrode material 9213, and the first solid electrolyte includes a first sub-solid electrolyte 9210 and a second sub-solid electrolyte 9214. Therefore, along the direction from the first negative electrode unit 921 to the second negative electrode unit 922, both the first negative electrode unit 921 and the second negative electrode unit 922 include a first sub-solid electrolyte 9210, a first negative electrode material 9211, a negative electrode current collector 9212, a second negative electrode material 9213, and a second sub-solid electrolyte 9214 stacked sequentially. In the first negative electrode unit 921, the first sub-solid electrolyte 9210 is closer to the lower protective sheet 911, and in the second negative electrode unit 922, the second sub-solid electrolyte 9214 is closer to the upper protective sheet 910.

[0136] The aforementioned positive electrode material includes a first positive electrode material 932 and a second positive electrode material 934. The second solid electrolyte includes a third sub-solid electrolyte 931, a fourth sub-solid electrolyte 935, and a fifth sub-solid electrolyte 936, along the direction from the first negative electrode unit 921 to the second negative electrode unit 922. The positive electrode unit 93 includes the third sub-solid electrolyte 931, the first positive electrode material 932, the positive electrode current collector 933, the second positive electrode material 934, and the fourth sub-solid electrolyte 935 stacked sequentially. The fifth sub-solid electrolyte 936 is respectively surrounded by the four edges of the first positive electrode material 932 and the second positive electrode material 934, located at the border of the first positive electrode material 932 and the second positive electrode material 934. The third sub-solid electrolyte 931 is attached to the second sub-solid electrolyte 9214 in the first negative electrode unit 921, and the fourth sub-solid electrolyte 935 is attached to the third sub-solid electrolyte 931 in the second negative electrode unit 922.

[0137] The upper protective sheet 910 and the lower protective sheet 911 protect the first negative electrode unit 921 and the second negative electrode unit 922. When the size of the upper protective sheet 910 and the lower protective sheet 911 is larger than the size of the negative electrode unit 92, and the rotating adhesive spraying assembly 3 provides side guards when spraying adhesive on the initial battery cell, an adhesive spraying channel is formed.

[0138] The materials of the upper protective sheet 910 and the lower protective sheet 911 include plastic, rubber, or silicone. The plastic can be PET (polyethylene terephthalate) or PUR (polyurethane). PET has excellent transparency, mechanical strength, and chemical resistance; PUR has good toughness, flexibility, and impact resistance. Rubber has high elasticity, insulation, low cost, ease of processing, and wear resistance; silicone has excellent high-temperature resistance, electrical insulation, and low-temperature resistance, and can maintain stability under extreme temperatures. An adhesive material is added to the side of the upper protective sheet 910 near the second sub-solid electrolyte 9214, and an adhesive layer is coated on the side of the lower protective sheet 911 near the first sub-solid electrolyte 9210.

[0139] While ensuring the performance of the first sub-solid electrolyte 9210, the second sub-solid electrolyte 9214, the third sub-solid electrolyte 931, the fourth sub-solid electrolyte 935, and the fifth sub-solid electrolyte 936, binders and other bonding materials can be added to the first sub-solid electrolyte 9210, the second sub-solid electrolyte 9214, the third sub-solid electrolyte 931, the fourth sub-solid electrolyte 935, and the fifth sub-solid electrolyte 936. This ensures tight bonding and a stable structure between the lower protective sheet 911, the first negative electrode unit 921, the positive electrode unit 93, the second negative electrode unit 922, and the upper protective sheet 910. It can improve the bonding strength between different unit sheets 9, maintain tight contact between the layers inside the all-solid cell, ensure the structural stability of the all-solid cell during charging and discharging, and promote the transport of lithium ions between the electrodes and the electrolyte, thereby improving the ionic conductivity of the battery.

Claims

1. A manufacturing apparatus for an all-solid-state battery cell, characterized in that, The device includes a stacking stage assembly, a hot-pressing laminating assembly, a rotary adhesive spraying assembly, and a control device, wherein the stacking stage assembly is located upstream of the hot-pressing laminating assembly and the rotary adhesive spraying assembly; the hot-pressing laminating assembly is located upstream of the rotary adhesive spraying assembly, or the rotary adhesive spraying assembly is located upstream of the hot-pressing laminating assembly. The stacking stage assembly is used to stack different unit wafers to form an initial battery cell, the hot pressing composite assembly is used for hot pressing composite, and the rotary glue spraying assembly is used for glue spraying positioning. The control device is used to control the stacking stage assembly, the hot pressing composite assembly, and the rotary adhesive spraying assembly.

2. The manufacturing equipment for all-solid-state battery cells according to claim 1, characterized in that, The hot-pressed composite assembly includes a hydraulic system and a pressurizing component; The pressurizing component includes an upper pressurizing plate and a lower pressurizing plate arranged opposite to each other. The upper pressurizing plate is connected to the hydraulic system on the side away from the lower pressurizing plate. Heating cores are respectively provided on the upper pressurizing plate and the lower pressurizing plate, and the heating cores are used to generate heat. Temperature sensors are evenly distributed on the upper pressure plate and the lower pressure plate, and the temperature sensors are used to detect the temperature at different locations on the upper pressure plate and the lower pressure plate in real time; The hydraulic system, the heating element, and the temperature sensor are respectively connected to the control device.

3. The manufacturing equipment for all-solid-state battery cells according to claim 1, characterized in that, The rotary adhesive spraying assembly includes a rotating mechanism, an adhesive spraying mechanism, a first visual inspection mechanism, and an adhesive curing mechanism. The rotating mechanism is located below the adhesive spraying mechanism and the adhesive curing mechanism, and the first visual inspection mechanism is located above the adhesive spraying mechanism and the adhesive curing mechanism. The first visual inspection mechanism is used to take real-time pictures of the initial battery cell; the rotation mechanism is used to rotate the initial battery cell; the glue spraying mechanism is used to spray glue onto the rotated initial battery cell; and the glue curing mechanism is used to position the initial battery cell after glue spraying. The rotating mechanism, the adhesive spraying mechanism, the first visual inspection mechanism, and the adhesive curing mechanism are respectively connected to the control device.

4. The manufacturing equipment for all-solid-state battery cells according to claim 1, characterized in that, The stacking stage assembly includes a second vision inspection mechanism, a cell stacking stage, and a cell clamping structure. The cell clamping structure is located above the cell stacking stage, and the second vision inspection mechanism is located on the side of the cell clamping structure away from the cell stacking stage. The second visual inspection mechanism is used to take real-time pictures of different cell positions. The cell stacking platform is used to drive the cell pressing structure to move along the first direction, the second direction and the rotation direction to the positions of different cell positions. The first direction intersects the second direction. The rotation direction is to rotate the cell stacking platform clockwise or counterclockwise. The cell pressing structure is used to stack different cell pieces and press the stacked cell pieces together. The second visual inspection mechanism, the cell stacking platform, and the cell clamping structure are respectively connected to the control device.

5. The manufacturing equipment for all-solid-state battery cells according to claim 1, characterized in that, Also includes: The system includes a positive electrode cell fabrication and conveying mechanism, a negative electrode cell fabrication and conveying mechanism, a protective sheet fabrication and conveying structure, a cell lower stacking robot, a cell upper buffer robot, and a buffer assembly. The positive electrode unit preparation and conveying mechanism, the negative electrode unit preparation and conveying mechanism, and the protective sheet preparation and conveying structure are arranged side by side; the lower cell stacking robot is located downstream of the stacking stage assembly and upstream of the upper cell buffer robot. The buffer component is located downstream of the buffer robot on the battery cell and upstream of the hot-pressing composite component; or, the buffer component is located downstream of the buffer robot on the battery cell and upstream of the rotary adhesive spraying component. The positive electrode unit preparation and conveying mechanism, the negative electrode unit preparation and conveying mechanism, and the protective sheet preparation and conveying structure are respectively used to convey different unit sheets to the stacking stage assembly; the cell lower stacking stage robot is used to grasp the initial cell; the cell upper buffer robot is used to transfer the initial cell grasped by the cell lower stacking stage robot to the buffer assembly.

6. The manufacturing equipment for all-solid-state battery cells according to claim 5, characterized in that, Also includes: Battery cell transfer robot, battery cell unloading robot, battery cell pulling belt and battery cell unloading assembly; The battery cell transfer robot is located downstream of the buffer assembly and upstream of the hot-pressing composite assembly; or, the battery cell transfer robot is located downstream of the buffer assembly and upstream of the rotary adhesive spraying assembly. The battery cell unloading robot is located downstream of the hot-pressing composite assembly and upstream of the battery cell pulling tape and the battery cell unloading assembly; or, the battery cell unloading robot is located downstream of the rotary glue spraying assembly and upstream of the battery cell pulling tape and the battery cell unloading assembly. The cell pull strip and the cell feeding assembly are arranged to intersect; When the buffer component is located upstream of the hot-pressing composite component, the cell transfer robot is used to transfer the initial cell placed in the buffer component to the hot-pressing composite station corresponding to the hot-pressing composite component; the cell unloading robot is used to transfer the initial cell after hot-pressing composite to the rotary glue spraying station corresponding to the rotary glue spraying component. When the buffer assembly is located upstream of the rotary glue spraying assembly, the battery cell transfer robot is used to transfer the initial battery cell placed in the buffer assembly to the rotary glue spraying station corresponding to the rotary glue spraying assembly; the battery cell unloading robot is used to transfer the initial battery cell after hot pressing and lamination to the hot pressing and lamination station corresponding to the hot pressing and lamination assembly. When the battery cell unloading robot is located downstream of the hot-pressing composite assembly and upstream of the battery cell pull belt and the battery cell unloading assembly, the battery cell pull belt is used to transfer the unqualified initial battery cells after hot-pressing composite to the waste port; the battery cell unloading assembly is used to transfer the qualified initial battery cells after hot-pressing composite to the material receiving port. When the battery cell unloading robot is located downstream of the rotary glue spraying assembly and upstream of the battery cell pull belt and the battery cell unloading assembly, the battery cell pull belt is used to transfer the unqualified initial battery cells after glue spraying and positioning to the waste port; the battery cell unloading assembly is used to transfer the qualified initial battery cells after glue spraying and positioning to the material receiving port.

7. The manufacturing equipment for all-solid-state battery cells according to claim 5, characterized in that, Both the positive electrode unit preparation and conveying mechanism and the negative electrode unit preparation and conveying mechanism include a first unit feeding component, a first unit feeding robot, a unit defect detection component, a unit positioning platform, and a unit transfer robot. The first unit loading robot is located downstream of the first unit loading assembly and upstream of the unit defect detection assembly; the unit positioning platform is located downstream of the unit defect detection assembly and upstream of the unit transfer robot; the unit transfer robot is located upstream of the stacking table assembly. The first unit feeding component is used to feed the unit sheets with different polarities; the first unit feeding robot is used to pick up the unit sheets with different polarities and place them at a preset station; the unit defect detection component is used to detect the unit sheets with different polarities. The unit positioning platform is used to position the unit pieces with different polarities after detection; the unit transfer robot is used to pick up the positioned unit pieces with different polarities and place them onto the cell stacking platform.

8. The manufacturing equipment for all-solid-state battery cells according to claim 5, characterized in that, The unit sheet includes a protective sheet; The protective sheet preparation and conveying structure includes a second unit feeding assembly and a second unit feeding robot. The second unit feeding robot is located downstream of the second unit feeding assembly and upstream of the stacking table assembly. The second unit feeding assembly is used to feed the protective sheet, and the second unit feeding robot is used to transfer the protective sheet to the stacking table assembly.

9. A method for manufacturing an all-solid-state battery cell, characterized in that, All-solid-state battery cells are prepared using all-solid-state battery cell manufacturing equipment, wherein the all-solid-state battery cell manufacturing equipment is the all-solid-state battery cell manufacturing equipment according to any one of claims 1-8; The stacking assembly stacks different unit wafers in a preset order to form an initial battery cell; The initial battery cell is bonded together using the hot-pressing composite assembly to form a composite battery cell; the periphery of the composite battery cell is positioned by spraying adhesive using the rotary adhesive spraying assembly to form an all-solid-state battery cell, or... The initial battery cell is positioned by spraying adhesive around its periphery using the rotary adhesive spraying assembly; the initial battery cell, after being positioned by spraying adhesive, is then composited using the hot-pressing composite assembly to form an all-solid-state battery cell.

10. A fully solid-state battery cell, characterized in that, The all-solid-state battery cell is prepared using an all-solid-state battery cell manufacturing equipment, wherein the all-solid-state battery cell manufacturing equipment is the all-solid-state battery cell manufacturing equipment according to any one of claims 1-8; The all-solid-state battery cell includes a protection sheet, a negative electrode unit, and a positive electrode unit. The protection sheet includes an upper protection sheet and a lower protection sheet. The negative electrode unit includes a first negative electrode unit and a second negative electrode unit. The positive electrode unit is located between the first negative electrode unit and the second negative electrode unit, the lower protective sheet is located on the side of the first negative electrode unit away from the positive electrode unit, and the upper protective sheet is located on the side of the second negative electrode unit away from the positive electrode unit; Along the direction from the first negative electrode unit to the second negative electrode unit, both the first negative electrode unit and the second negative electrode unit include negative electrode materials and a first solid electrolyte located on both sides of the negative electrode current collector. Along the direction from the first negative electrode unit to the second negative electrode unit, the positive electrode unit includes a positive electrode material and a second solid electrolyte located on both sides of the positive electrode current collector.

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