Solid state battery lamination apparatus

Abstract

The application relates to a solid-state battery lamination device. The solid-state battery lamination device comprises a lamination device including a lamination table; a first feeding device arranged on one side of the lamination table and used for providing a composite negative electrode sheet and a bare negative electrode sheet; a first transfer device used for stacking the composite negative electrode sheet or the bare negative electrode sheet provided by the first feeding device on the lamination table; a second feeding device arranged on the other side of the lamination table and used for providing a composite positive electrode sheet; and a second transfer device used for stacking the composite positive electrode sheet provided by the second feeding device on the lamination table.

Description

Technical Field

[0001] This application relates to the field of solid-state battery manufacturing equipment technology, specifically a solid-state battery stacking equipment. Background Technology

[0002] With the continuous advancement of technology and the increasing demands of people, battery technology is also constantly evolving. Among these advancements, solid-state batteries are a novel battery technology featuring a solid electrolyte instead of a liquid electrolyte. Compared to traditional liquid batteries, solid-state batteries offer advantages such as higher energy density, faster charging speeds, enhanced safety performance, and longer lifespan, attracting widespread attention. Solid-state battery cells are typically formed by stacking materials such as a positive electrode, a negative electrode, a solid electrolyte, and a frame. The stacking process involves a wide variety of materials, making the stacking equipment complex and resulting in a low degree of automation. Utility Model Content

[0003] Therefore, it is necessary to provide a solid-state battery stacking device that can simplify the equipment structure and improve the degree of automation to address the above problems.

[0004] A solid-state battery stacking device, comprising:

[0005] Stacking apparatus, including a stacking stage;

[0006] The first feeding device is arranged on one side of the stacking table and is used to provide composite negative electrode sheets and bare negative electrode sheets;

[0007] A first transfer device is used to stack the composite negative electrode sheet or bare negative electrode sheet provided by the first feeding device onto the stacking table;

[0008] A second feeding device, arranged on the other side of the stacking table, is used to provide composite positive electrode sheets; and

[0009] The second transfer device is used to stack the composite positive electrode sheet provided by the second feeding device onto the stacking stage.

[0010] In some embodiments, the solid-state battery stacking equipment further includes a first correction and positioning device, which is arranged between the first feeding device and the stacking table.

[0011] The first transfer device is used to transfer the composite negative electrode sheet or bare negative electrode sheet provided by the first feeding device to the first correction and positioning device, and is also used to transfer the composite negative electrode sheet or bare negative electrode sheet on the first correction and positioning device to the stacking table.

[0012] In some embodiments, the solid-state battery stacking equipment further includes a first visual inspection device and a second visual inspection device. The first visual inspection device is used to perform visual inspection on the lower surface of the composite negative electrode sheet or bare negative electrode sheet on the first transfer device, and the second visual inspection device is used to perform visual inspection on the upper surface of the composite negative electrode sheet or bare negative electrode sheet on the first correction and positioning device.

[0013] In some embodiments, the solid-state battery stacking equipment further includes a first recycling device, wherein the first recycling device, the first feeding device, and the stacking table are arranged around the first correction and positioning device;

[0014] The first transfer device is used to transfer the unqualified composite negative electrode sheet or bare negative electrode sheet from the first correction and positioning device to the first recycling device.

[0015] In some embodiments, the solid-state battery stacking apparatus further includes a first dust removal device for removing dust from the lower surface of the composite negative electrode sheet or bare negative electrode sheet on the first transfer device; and / or

[0016] The solid-state battery stacking equipment also includes a first iron removal device, which is used to remove iron filings from the lower surface of the composite negative electrode sheet or bare negative electrode sheet on the first transfer device.

[0017] In some embodiments, the solid-state battery stacking equipment further includes a second dust removal device for removing dust from the upper surface of the composite negative electrode sheet or bare negative electrode sheet on the first alignment and positioning device; and / or

[0018] The solid-state battery stacking equipment also includes a second iron removal device, which is used to remove iron filings from the upper surface of the composite negative electrode sheet or bare negative electrode sheet on the first alignment and positioning device.

[0019] In some embodiments, the solid-state battery stacking equipment further includes a second alignment and positioning device, which is arranged between the second feeding device and the stacking table;

[0020] The second transfer device is used to transfer the composite positive electrode sheet provided by the second feeding device to the second correction and positioning device, and also to transfer the composite positive electrode sheet on the second correction and positioning device to the stacking stage.

[0021] In some embodiments, the solid-state battery stacking equipment further includes a third visual inspection device and a fourth visual inspection device. The third visual inspection device is used to perform visual inspection on the lower surface of the composite positive electrode sheet on the second transfer device, and the fourth visual inspection device is used to perform visual inspection on the upper surface of the composite positive electrode sheet on the second correction and positioning device.

[0022] In some embodiments, the solid-state battery stacking equipment further includes a second recycling device, the second recycling device, the second feeding device, and the stacking table arranged around the second correction and positioning device;

[0023] The second transfer device is used to transfer the defective composite positive electrode sheet from the second correction and positioning device to the second recycling device.

[0024] In some embodiments, the solid-state battery stacking apparatus further includes a third dust removal device for removing dust from the lower surface of the composite cathode sheet on the second transfer device; and / or

[0025] The solid-state battery stacking equipment also includes a third iron removal device, which is used to remove iron filings from the lower surface of the composite positive electrode sheet on the second transfer device.

[0026] In some embodiments, the solid-state battery stacking equipment further includes a fourth dust removal device for removing dust from the upper surface of the composite positive electrode sheet on the second alignment and positioning device; and / or

[0027] The solid-state battery stacking equipment also includes a fourth iron removal device, which is used to remove iron filings from the upper surface of the composite positive electrode sheet on the second alignment and positioning device.

[0028] In some embodiments, the first feeding device includes a first feeding clip, a second feeding clip, and a first transfer mechanism. The first feeding clip is arranged on the side of the stacking table opposite to the second feeding device, and the second feeding clip is arranged on the side of the first feeding clip opposite to the stacking table. The first transfer mechanism is used to transfer the bare negative electrode sheet on the second feeding clip to the first feeding clip, and the first transfer device is used to transfer the composite negative electrode sheet or bare negative electrode sheet on the first feeding clip to the stacking table.

[0029] In some embodiments, the first feeding device further includes a recovery magazine disposed between the first feeding magazine and the second feeding magazine, and the first transfer mechanism is used to transfer the trays on the first feeding magazine and the second feeding magazine to the recovery magazine.

[0030] In some embodiments, the stacking stage can be moved to a transfer station;

[0031] The solid-state battery stacking equipment also includes a coating device, which includes a coating mechanism and a second transfer mechanism. The coating mechanism is arranged on one side of the transfer station, and the second transfer mechanism is used to transfer the battery cells located on the stacking table at the transfer station to the coating mechanism.

[0032] In some embodiments, the solid-state battery stacking equipment further includes a feeding conveyor line, and the second transfer mechanism is used to transfer the cells on the overmolding mechanism to the feeding conveyor line.

[0033] In some embodiments, the coating mechanism includes a coating table and a coating assembly, wherein the coating table and the unloading conveyor line are respectively arranged on opposite sides of the transfer station, and the coating assembly is arranged on the side of the coating table away from the transfer station.

[0034] The second transfer mechanism is used to transfer the battery cells on the stacking table located at the transfer station to the coating table. The coating assembly is used to coat the battery cells on the coating table. The second transfer mechanism is also used to transfer the battery cells on the coating table to the unloading conveyor line.

[0035] In actual use, the aforementioned solid-state battery stacking equipment employs a first feeding device to provide composite negative electrode sheets and a second feeding device to provide composite positive electrode sheets. The stacking table moves to the stacking station, at which point the first and second feeding devices are positioned on opposite sides of the stacking table in a first direction. A first transfer device stacks the composite negative electrode sheets provided by the first feeding device onto the stacking table, and a second transfer device stacks the composite positive electrode sheets provided by the second feeding device onto the stacking table. The first and second transfer devices alternately perform the stacking action, resulting in the composite negative and positive electrode sheets being alternately stacked on the stacking table. After a certain number of composite negative and positive electrode sheets are completed, the first feeding device provides bare negative electrode sheets, and the first transfer device stacks these bare negative electrode sheets onto the stacking table, thus forming a solid-state battery cell on the stacking table. The solid-state battery cell comprises, from bottom to top, a composite negative electrode sheet, a composite positive electrode sheet, a composite positive electrode sheet, and so on, a bare negative electrode sheet.

[0036] Thus, the solid-state battery stacking equipment of this application can automatically realize the feeding and stacking of composite negative electrode sheets, composite positive electrode sheets and bare negative electrode sheets, that is, realize the integrated automatic production of solid-state battery cells, greatly improve the degree of automation, and simplify the equipment structure. Attached Figure Description

[0037] Figure 1This is a schematic diagram of the structure of a solid-state battery stacking device in one embodiment of this application;

[0038] Figure 2 This is a cross-sectional view of a composite negative electrode sheet in one embodiment of this application;

[0039] Figure 3 This is a cross-sectional view of a bare negative electrode sheet in one embodiment of this application;

[0040] Figure 4 This is a cross-sectional view of a composite positive electrode sheet in one embodiment of this application;

[0041] Figure 5 This is a schematic diagram of the structure of a solid-state battery cell in one embodiment of this application. Detailed Implementation

[0042] To make the above-mentioned objectives, features, and advantages of this application more apparent and understandable, the specific embodiments of this application are described in detail below with reference to the accompanying drawings. Many specific details are set forth in the following description to provide a thorough understanding of this application. However, this application can be implemented in many other ways different from those described herein, and those skilled in the art can make similar modifications without departing from the spirit of this application. Therefore, this application is not limited to the specific embodiments disclosed below.

[0043] In the description of this application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicating the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application.

[0044] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this application, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0045] In this application, unless otherwise expressly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise expressly limited. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0046] In this application, unless otherwise expressly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0047] It should be noted that when an element is referred to as being "fixed to" or "set on" another element, it can be directly on the other element or there may be an intervening element. When an element is considered to be "connected to" another element, it can be directly connected to the other element or there may be an intervening element. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and similar expressions used herein are for illustrative purposes only and do not represent the only possible implementation.

[0048] Please see Figure 1 This application provides a solid-state battery stacking apparatus, including a stacking device, a first feeding device 20, a first transfer device, a second feeding device 30, a second transfer device, and an encapsulation device. The stacking device includes a driving mechanism and a stacking stage 11. The stacking stage 11 is connected to the driving end of the driving mechanism, enabling the driving mechanism to drive the stacking stage 11 to move between a stacking station A and a transfer station B. The stacking station A and the transfer station B are arranged at intervals along a second direction Y. That is, the driving mechanism can drive the stacking stage 11 to move along the second direction Y, passing through stacking station A and the downstream station. The first feeding device 20 is arranged on one side of the stacking station A in the first direction X, for providing a composite negative electrode sheet a (see...). Figure 2 ) and bare negative electrode b (see Figure 3The composite negative electrode a includes a negative electrode a1 and a plastic frame a2 and a solid electrolyte layer a3 stacked on the same side of the negative electrode a1. A bare negative electrode b refers to a negative electrode a1 without the plastic frame a2 and the solid electrolyte layer a3. It should be noted that the plastic frame a2 can be a single layer or a double layer; this is not limited here.

[0049] The first transfer device is used to stack the composite negative electrode sheet a or bare negative electrode sheet b provided by the first feeding device 20 onto the stacking table 11 located at the stacking station A. The second feeding device 30 is arranged on the other side of the stacking station A in the first direction X, and is used to provide the composite positive electrode sheet c (see...). Figure 4 The composite positive electrode c includes a positive electrode c1 and a solid electrolyte layer a3 stacked on one side of the positive electrode c1. A second transfer device is used to stack the composite positive electrode c provided by the second feeding device 30 onto the stacking table 11 located at the stacking station A. The coating device includes a coating mechanism 81 and a second transfer mechanism. The coating mechanism 81 is arranged on one side of the transfer station B in the first direction X. The second transfer mechanism is used to transfer the battery cell e (formed by stacking a composite negative electrode a, a composite positive electrode c, and a bare negative electrode b) located on the stacking table 11 at the transfer station B to the coating mechanism 81, such that the coating mechanism 81 transfers the battery cell e (see...) to the coating mechanism 81. Figure 5 The material is then coated. It should be noted that the first direction X intersects with the second direction Y. Preferably, the first direction X and the second direction Y are perpendicular to each other. Optionally, both the first and second transfer devices can be robotic arms, and the second transfer mechanism can also be a robotic arm. Of course, in other embodiments, the first transfer device, the second transfer device, and the second transfer mechanism can also be other handling devices capable of transferring materials, and no special limitations are made here.

[0050] In actual use, the aforementioned solid-state battery stacking equipment employs a first feeding device 20 to provide a composite negative electrode sheet a, and a second feeding device 30 to provide a composite positive electrode sheet c. A driving mechanism moves the stacking table 11 to stacking station A, at which point the first feeding device 20 and the second feeding device 30 are located on opposite sides of the stacking table 11 in the first direction X. A first transfer device stacks the composite negative electrode sheet a provided by the first feeding device 20 onto the stacking table 11, and a second transfer device stacks the composite positive electrode sheet c provided by the second feeding device 30 onto the stacking table 11. The first and second transfer devices alternately perform the stacking action, resulting in the composite negative electrode sheet a and the composite positive electrode sheet c being alternately stacked on the stacking table 11. After a certain number of composite negative electrode sheets a and composite positive electrode sheets c are completed, the first feeding device 20 provides a bare negative electrode sheet b, and the first transfer device stacks the bare negative electrode sheet b provided by the first feeding device 20 onto the stacking table 11, thereby forming a solid-state battery cell e on the stacking table 11. The solid-state battery cell e includes a composite negative electrode a, a composite positive electrode c, another composite negative electrode a, another composite positive electrode c, and so on, with a bare negative electrode b stacked sequentially from bottom to top. Then, a drive mechanism moves the stacking stage 11 from stacking station A to transfer station B. At this time, the stacking stage 11 is located on one side of the coating mechanism 81 in the first direction X. A second transfer mechanism transfers the cell e from the stacking stage 11 to the coating mechanism 81. The coating mechanism 81 coats the cell e, that is, it wraps the cell e with a protective film d.

[0051] Thus, the solid-state battery stacking equipment of this application can automatically realize the feeding and stacking of composite negative electrode a, composite positive electrode c and bare negative electrode b, as well as the coating of the stacked cell e, that is, realize the integrated automatic production of solid-state battery cell e, which greatly improves the degree of automation and simplifies the equipment structure.

[0052] It should be noted that in this application, a composite negative electrode sheet a is provided by a first feeding device 20, and a composite positive electrode sheet c is provided by a second feeding device 30. Then, a first transfer device and a second transfer device are used to alternately stack the composite negative electrode sheet a and the composite positive electrode sheet c on the stacking stage 11. Finally, a bare negative electrode sheet b is stacked using the first transfer device. In other words, the solid-state battery stacking equipment in this application only requires three materials: composite negative electrode sheet a, composite positive electrode sheet c, and bare negative electrode sheet b. Compared with the prior art schemes that stack positive electrode sheets, solid electrolytes, frames, and negative electrode sheets separately, the solid-state battery stacking equipment in this application requires fewer stacking materials, thereby greatly simplifying the equipment structure and improving stacking efficiency.

[0053] In embodiments of this application, the solid-state battery stacking equipment further includes a first alignment and positioning device 40. This first alignment and positioning device 40 is arranged between the first feeding device 20 and the stacking station A. A first transfer device is used to transfer the composite negative electrode sheet a or bare negative electrode sheet b provided by the first feeding device 20 onto the first alignment and positioning device 40, allowing the first alignment and positioning device 40 to adjust the position of the composite negative electrode sheet a or bare negative electrode sheet b on it. After the first alignment and positioning device 40 completes the positioning of the composite negative electrode sheet a or bare negative electrode sheet b, the first transfer device stacks the composite negative electrode sheet a or bare negative electrode sheet b on the first alignment and positioning device 40 onto the stacking table 11 located at the stacking station A. Thus, before stacking each composite negative electrode sheet a or bare negative electrode sheet b onto the stacking table 11, the first alignment and positioning device 40 positions it, ensuring that the first transfer device can accurately stack the composite negative electrode sheet a or bare negative electrode sheet b onto the stacking table 11, which is beneficial for improving the stacking quality.

[0054] Specifically, in this embodiment, the solid-state battery stacking equipment further includes a first visual inspection device, a second visual inspection device, and a first recycling device 60. The first visual inspection device is arranged along the movement path of the first transfer device from the first feeding device 20 to the first alignment and positioning device 40, enabling it to visually inspect the lower surface of the composite negative electrode a or bare negative electrode b on the first transfer device. The second visual inspection device is used to visually inspect the upper surface of the composite negative electrode a or bare negative electrode b on the first alignment and positioning device 40. The first recycling device 60 is arranged on one side of the first alignment and positioning device 40 in the second direction Y, such that the first recycling device 60, the first feeding device 20, and the stacking station A are arranged around the first alignment and positioning device 40. If the first visual inspection device detects a defect on the lower surface of the composite negative electrode a or bare negative electrode b and / or the second visual inspection device detects a defect on the upper surface of the composite negative electrode a or bare negative electrode b, then the composite negative electrode a or bare negative electrode b is determined to be unqualified. The first transfer device is used to transfer the unqualified composite negative electrode sheet a or bare negative electrode sheet b on the first correction and positioning device 40 to the first recycling device 60, thereby preventing the unqualified composite negative electrode sheet a or bare negative electrode sheet b from being stacked on the stacking table 11 and affecting the quality and safety of the cell e.

[0055] In a specific embodiment, the solid-state battery stacking equipment further includes a first dust removal device. This first dust removal device is arranged along the moving path of the first transfer device from the first feeding device 20 to the first alignment and positioning device 40. This ensures that when the first transfer device passes through the first dust removal device, the first dust removal device can remove dust from the lower surface of the composite negative electrode a or the bare negative electrode b on the first transfer device, guaranteeing that the cleanliness of the lower surface of the composite negative electrode a or the bare negative electrode b meets the process requirements. This is beneficial for improving the quality and safety of the solid-state battery cell e.

[0056] The solid-state battery stacking equipment also includes a first iron removal device. This first iron removal device is arranged on the moving path of the first transfer device from the first feeding device 20 to the first correction and positioning device 40, so that when the first transfer device passes through the first iron removal device, the first iron removal device can remove iron filings from the lower surface of the composite negative electrode a or the bare negative electrode b on the first transfer device, ensuring that there are no iron filings on the lower surface of the composite negative electrode a or the bare negative electrode b, which is beneficial to improving the quality and safety of the solid-state battery cell e.

[0057] It is understandable that the first transfer device uses vacuum adsorption to pick up the composite negative electrode a or the bare negative electrode b. Therefore, during the process of the first transfer device transferring the composite negative electrode a or the bare negative electrode b, the lower surface of the composite negative electrode a or the bare negative electrode b is exposed, so that the first dust removal device and the first iron removal device can respectively remove dust and iron from the composite negative electrode a or the bare negative electrode b on the first transfer device.

[0058] In a specific embodiment, the solid-state battery stacking equipment further includes a second dust removal device. This second dust removal device is used to remove dust from the upper surface of the composite negative electrode a or the bare negative electrode b on the first alignment and positioning device 40, ensuring that the cleanliness of the upper surface of the composite negative electrode a or the bare negative electrode b meets the process requirements, which is beneficial to improving the quality and safety of the solid-state battery cell e.

[0059] Furthermore, the second dust removal device is mounted on the first recycling device 60 and can move relative to the first recycling device 60 to above the first alignment and positioning device 40. Thus, when dust removal is required, the second dust removal device moves relative to the first recycling device 60 until it reaches above the first alignment and positioning device 40. At this time, the second dust removal device removes dust from the upper surface of the composite negative electrode a or the bare negative electrode b on the first alignment and positioning device 40. After dust removal is completed, the second dust removal device moves in the opposite direction relative to the first recycling device 60 to reset. It should be noted that the second dust removal device can be driven by a linear drive module such as a cylinder or an electric cylinder, as long as it can move to or away from above the first alignment and positioning device 40; no limitation is made here.

[0060] In a specific embodiment, the solid-state battery stacking equipment further includes a second iron removal device. This second iron removal device is used to remove iron from the upper surface of the composite negative electrode a or the bare negative electrode b on the first alignment and positioning device 40, ensuring that there are no iron filings on the upper surface of the composite negative electrode a or the bare negative electrode b, which is beneficial to improving the quality and safety of the solid-state battery cell e.

[0061] Furthermore, the second iron removal device is mounted on the first recycling device 60 and is movable relative to the first recycling device 60 to above the first alignment and positioning device 40. Thus, when iron removal is required, the second iron removal device moves relative to the first recycling device 60 until it reaches above the first alignment and positioning device 40. At this time, the second iron removal device removes iron from the upper surface of the composite negative electrode a or the bare negative electrode b on the first alignment and positioning device 40. After iron removal is completed, the second iron removal device moves in the opposite direction relative to the first recycling device 60 to reset. It should be noted that the second iron removal device can be driven by a linear drive module such as a cylinder or an electric cylinder, as long as it can move to or away from above the first alignment and positioning device 40; no limitation is made here.

[0062] In embodiments of this application, the solid-state battery stacking equipment further includes a second alignment and positioning device 50. This second alignment and positioning device 50 is arranged between the second feeding device 30 and the stacking station A. A second transfer device is used to transfer the composite positive electrode sheet c provided by the second feeding device 30 onto the second alignment and positioning device 50, allowing the second alignment and positioning device 50 to adjust the position of the composite positive electrode sheet c on it. After the second alignment and positioning device 50 completes the positioning of the composite positive electrode sheet c, the second transfer device stacks the composite positive electrode sheet c on the second alignment and positioning device 50 onto the stacking table 11 located at the stacking station A. Thus, by positioning each composite positive electrode sheet c using the second alignment and positioning device 50 before stacking it onto the stacking table 11, the second transfer device can accurately stack the composite positive electrode sheet c onto the stacking table 11, which is beneficial for improving the stacking quality.

[0063] Specifically, in this embodiment, the solid-state battery stacking equipment further includes a third visual inspection device, a fourth visual inspection device, and a second recycling device 70. The third visual inspection device is arranged along the movement path of the second transfer device from the second feeding device 30 to the second alignment and positioning device 50, enabling it to visually inspect the lower surface of the composite cathode sheet c on the second transfer device. The fourth visual inspection device is used to visually inspect the upper surface of the composite cathode sheet c on the second alignment and positioning device 50. The second recycling device 70 is arranged on one side of the second alignment and positioning device 50 in the second direction Y, such that the second recycling device 70, the second feeding device 30, and the stacking station A are arranged around the second alignment and positioning device 50. If the third visual inspection device detects a defect on the lower surface of the composite cathode sheet c and / or the fourth visual inspection device detects a defect on the upper surface of the composite cathode sheet c, then the composite cathode sheet c is deemed unqualified. The second transfer device is used to transfer the unqualified composite positive electrode sheet c on the second correction and positioning device 50 to the second recycling device 70, thereby preventing the unqualified composite positive electrode sheet c from being stacked on the stacking table 11 and affecting the quality and safety of the cell e.

[0064] In a specific embodiment, the solid-state battery stacking equipment also includes a third dust removal device. This third dust removal device is arranged along the moving path of the second transfer device from the second feeding device 30 to the second alignment and positioning device 50. This allows the third dust removal device to remove dust from the lower surface of the composite cathode sheet c on the second transfer device as it passes through, ensuring that the cleanliness of the lower surface of the composite cathode sheet c meets process requirements. This is beneficial for improving the quality and safety of the solid-state battery cell e.

[0065] The solid-state battery stacking equipment also includes a third iron removal device. This third iron removal device is arranged on the moving path of the second transfer device from the second feeding device 30 to the second correction and positioning device 50, so that when the second transfer device passes through the third iron removal device, the third iron removal device can remove iron filings from the lower surface of the composite positive electrode c on the second transfer device, ensuring that there are no iron filings on the lower surface of the composite positive electrode c, which is beneficial to improving the quality and safety of the solid-state battery cell e.

[0066] It is understandable that the second transfer device uses vacuum adsorption to pick up the composite positive electrode sheet c. Therefore, during the process of the second transfer device transferring the composite positive electrode sheet c, the lower surface of the composite positive electrode sheet c is exposed, so that the third dust removal device and the third iron removal device can respectively remove dust and iron from the composite positive electrode sheet c on the second transfer device.

[0067] In a specific embodiment, the solid-state battery stacking equipment further includes a fourth dust removal device. This fourth dust removal device is used to remove dust from the upper surface of the composite positive electrode c on the second alignment and positioning device 50, ensuring that the cleanliness of the upper surface of the composite positive electrode c meets the process requirements, which is beneficial to improving the quality and safety of the solid-state battery cell e.

[0068] Furthermore, the fourth dust removal device is mounted on the second recycling device 70 and can move relative to the second recycling device 70 to above the second alignment and positioning device 50. Thus, when dust removal is required, the fourth dust removal device moves relative to the second recycling device 70 until it reaches above the second alignment and positioning device 50. At this time, the fourth dust removal device removes dust from the upper surface of the composite positive electrode c on the second alignment and positioning device 50. After dust removal is completed, the fourth dust removal device moves in the opposite direction relative to the second recycling device 70 to reset. It should be noted that the fourth dust removal device can be driven by a linear drive module such as a cylinder or electric cylinder, as long as it can move to or away from above the second alignment and positioning device 50; no limitation is made here.

[0069] In a specific embodiment, the solid-state battery stacking equipment further includes a fourth iron removal device. This fourth iron removal device is used to remove iron from the upper surface of the composite positive electrode c on the second alignment and positioning device 50, ensuring that there are no iron filings on the upper surface of the composite positive electrode c, which is beneficial to improving the quality and safety of the solid-state battery cell e.

[0070] Furthermore, the fourth iron removal device is mounted on the second recovery device 70 and is movable relative to the second recovery device 70 to above the second alignment and positioning device 50. Thus, when iron removal is required, the fourth iron removal device moves relative to the second recovery device 70 until it reaches above the second alignment and positioning device 50. At this time, the fourth iron removal device removes iron from the upper surface of the composite positive electrode c on the second alignment and positioning device 50. After iron removal is completed, the fourth iron removal device moves in the opposite direction relative to the second recovery device 70 to reset. It should be noted that the fourth iron removal device can be driven by a linear drive module such as a cylinder or electric cylinder, as long as it can move to or away from above the second alignment and positioning device 50; no limitation is made here.

[0071] In the embodiments of this application, the first feeding device 20 includes a first feeding clip 21, a second feeding clip 23, and a first transfer mechanism. The first feeding clip 21 is arranged on the side of the first alignment and positioning device 40 away from the stacking station A. The second feeding clip 23 is arranged on the side of the first feeding clip 21 away from the first alignment and positioning device 40. That is, the first feeding clip 21, the second feeding clip 23, the first alignment and positioning device 40, the stacking station A, the second alignment and positioning device 50, and the second feeding device 30 are arranged sequentially at intervals along the first direction X. The first feeding clip 21 is used to load the composite negative electrode a, and the second feeding clip 23 is used to load the bare negative electrode b. The first transfer mechanism is used to transfer the bare negative electrode b on the second feeding clip 23 to the first feeding clip 21, and the first transfer device is used to transfer the composite negative electrode a or the bare negative electrode b on the first feeding clip 21 to the stacking table 11 located at the stacking station A. Optionally, the first transfer mechanism may be a robotic arm. Of course, in other embodiments, the first transfer mechanism may also be other handling mechanisms capable of transferring materials, and no special limitation is made here.

[0072] Thus, when it is necessary to stack composite negative electrode sheets a, the first transfer device first transfers the composite negative electrode sheet a on the first feeding clip 21 to the first alignment and positioning device 40, and then the first alignment and positioning device 40 transfers it to the stacking table 11. When it is necessary to stack bare negative electrode sheets b, the first transfer mechanism transfers the bare negative electrode sheet b on the second feeding clip 23 to the first feeding clip 21; the first transfer device first transfers the bare negative electrode sheet b on the first feeding clip 21 to the first alignment and positioning device 40, and then the bare negative electrode sheet b on the first alignment and positioning device 40 transfers it to the stacking table 11.

[0073] It should be noted that the composite negative electrode a needs to be loaded onto a tray to prevent damage during the transfer process. That is, the composite negative electrode a is loaded onto a tray, and several trays containing composite negative electrode a are stacked on the first feeding clip 21. When the first transfer device picks up material, it only picks up the composite negative electrode a from the top tray, while the top tray (i.e., the empty tray without composite negative electrode a) remains on the first feeding clip 21.

[0074] Similarly, the bare negative electrode sheet b also needs to be loaded onto a tray to prevent it from being damaged during transfer. That is, the bare negative electrode sheet b is loaded onto a tray, and several trays loaded with bare negative electrode sheets b are stacked on the second feeding clip 23. When the first transfer mechanism picks up the material, it only picks up the bare negative electrode sheet b on the top tray, while the top tray (i.e., the empty tray without bare negative electrode sheets b) remains on the second feeding clip 23.

[0075] In embodiments of this application, the first feeding device 20 further includes a retrieval clip 25, which is arranged between the first feeding clip 21 and the second feeding clip 23. The first transfer mechanism is also used to transfer empty trays from the first feeding clip 21 and the second feeding clip 23 to the retrieval clip 25. The retrieval clip 25 is used to retrieve the empty trays transferred by the first transfer mechanism. Thus, when it is necessary to stack composite negative electrode sheets a onto the stacking table 11, the first transfer device transfers the composite negative electrode sheets a from the top tray on the first feeding clip 21 to the first alignment and positioning device 40, and then the first alignment and positioning device 40 transfers them to the stacking table 11. Simultaneously, the first transfer mechanism transfers the empty trays on the first feeding clip 21 to the retrieval clip 25, so that the composite negative electrode sheets a on the upper and lower trays of the first feeding clip 21 can be removed by the first transfer device.

[0076] When bare negative electrode sheets b need to be stacked on the stacking table 11, the first transfer mechanism does not remove the empty tray on the first feeding magazine 21. Instead, it transfers the bare negative electrode sheets b from the top tray on the second feeding magazine 23 to the empty tray on the first feeding magazine 21. Then, the first transfer device transfers the bare negative electrode sheets b from the empty tray on the first feeding magazine 21 to the first alignment and positioning device 40, and then the first alignment and positioning device 40 transfers them to the stacking table 11. At the same time, the first transfer mechanism transfers the empty tray on the first feeding magazine 21 to the recovery magazine 25 so that the composite negative electrode sheets a on the next layer tray on the first feeding magazine 21 can be removed by the first transfer device. The first transfer mechanism also transfers the empty tray on the second feeding magazine 23 to the recovery magazine 25 so that the bare negative electrode sheets b on the next layer tray on the second feeding magazine 23 can be removed by the first transfer mechanism.

[0077] In embodiments of this application, the solid-state battery stacking equipment further includes a feeding conveyor line 90. A second transfer mechanism is used to transfer the battery cell e on the overmolding mechanism 81 to the feeding conveyor line 90, and the feeding conveyor line 90 is used to convey the battery cell e downstream, thereby completing the feeding of the battery cell e.

[0078] Furthermore, the coating mechanism 81 includes a coating table 811 and a coating assembly 813. The coating table 811 and the unloading conveyor line 90 are respectively arranged on both sides of the transfer station B in the first direction X, and the coating assembly 813 is arranged on the side of the coating table 811 away from the transfer station B. That is, the coating assembly 813, the coating table 811, the transfer station B, and the unloading conveyor line 90 are arranged sequentially along the first direction X. The second transfer mechanism is used to transfer the battery cell e on the stacking table 11 located at the transfer station B to the coating table 811. The coating assembly 813 is used to coat the battery cell e on the coating table 811. After the coating is completed, the second transfer mechanism transfers the battery cell e on the coating table 811 to the unloading conveyor line 90, and the unloading conveyor line 90 conveys the battery cell e on it downstream.

[0079] Thus, after the battery cell e on the stacking table 11 is stacked, the drive mechanism moves the stacking table 11 from the stacking station A along the second direction Y to the transfer station B. Then, the second transfer mechanism transfers the battery cell e on the stacking table 11 to the coating table 811, and the drive mechanism drives the stacking table 11 from the transfer station B to the stacking station A along the second direction Y to facilitate the stacking of the next battery cell e. Then, the coating assembly 813 coats the battery cell e on the coating table 811. After the coating is completed, the second transfer mechanism transfers the battery cell e on the coating table 811 to the unloading conveyor line 90, and the unloading conveyor line 90 conveys the battery cell e downstream.

[0080] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0081] The embodiments described above are merely illustrative of several implementation methods of this application, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the patent application. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this application, and these all fall within the protection scope of this application. Therefore, the protection scope of this patent application should be determined by the appended claims.

Claims

1. A solid-state battery stacking device, characterized in that, include: The stacking device includes a stacking stage (11); A first feeding device (20) is arranged on one side of the stacking table (11) for providing composite negative electrode (a) and bare negative electrode (b); A first transfer device is used to stack the composite negative electrode sheet (a) or bare negative electrode sheet (b) provided by the first feeding device (20) onto the stacking table (11); The second feeding device (30) is arranged on the other side of the stacking table (11) for providing composite positive electrode (c); and The second transfer device is used to stack the composite positive electrode (c) provided by the second feeding device (30) onto the stacking stage (11).

2. The solid-state battery stacking equipment according to claim 1, characterized in that, The solid-state battery stacking equipment also includes a first correction and positioning device (40), which is arranged between the first feeding device (20) and the stacking table (11). The first transfer device is used to transfer the composite negative electrode sheet (a) or bare negative electrode sheet (b) provided by the first feeding device (20) to the first correction and positioning device (40), and is also used to transfer the composite negative electrode sheet (a) or bare negative electrode sheet (b) on the first correction and positioning device (40) to the stacking stage (11).

3. The solid-state battery stacking equipment according to claim 2, characterized in that, The solid-state battery stacking equipment further includes a first visual inspection device and a second visual inspection device. The first visual inspection device is used to perform visual inspection on the lower surface of the composite negative electrode (a) or bare negative electrode (b) on the first transfer device, and the second visual inspection device is used to perform visual inspection on the upper surface of the composite negative electrode (a) or bare negative electrode (b) on the first correction and positioning device (40).

4. The solid-state battery stacking equipment according to claim 3, characterized in that, The solid-state battery stacking equipment also includes a first recycling device (60), the first recycling device (60), the first feeding device (20) and the stacking table (11) are arranged around the first correction and positioning device (40); The first transfer device is used to transfer the unqualified composite negative electrode (a) or bare negative electrode (b) on the first correction and positioning device (40) to the first recycling device (60).

5. The solid-state battery stacking equipment according to claim 2, characterized in that, The solid-state battery stacking equipment further includes a first dust removal device, which is used to remove dust from the lower surface of the composite negative electrode sheet (a) or the bare negative electrode sheet (b) on the first transfer device; and / or The solid-state battery stacking equipment further includes a first iron removal device, which is used to remove iron filings from the lower surface of the composite negative electrode (a) or bare negative electrode (b) on the first transfer device.

6. The solid-state battery stacking equipment according to claim 2, characterized in that, The solid-state battery stacking equipment further includes a second dust removal device, which is used to remove dust from the upper surface of the composite negative electrode sheet (a) or bare negative electrode sheet (b) on the first alignment and positioning device (40); and / or The solid-state battery stacking equipment also includes a second iron removal device, which is used to remove iron filings from the upper surface of the composite negative electrode (a) or bare negative electrode (b) on the first correction and positioning device (40).

7. The solid-state battery stacking equipment according to claim 1, characterized in that, The solid-state battery stacking equipment also includes a second correction and positioning device (50), which is arranged between the second feeding device (30) and the stacking table (11); The second transfer device is used to transfer the composite positive electrode (c) provided by the second feeding device (30) to the second correction and positioning device (50), and is also used to transfer the composite positive electrode (c) on the second correction and positioning device (50) to the stacking stage (11).

8. The solid-state battery stacking equipment according to claim 7, characterized in that, The solid-state battery stacking equipment also includes a third visual inspection device and a fourth visual inspection device. The third visual inspection device is used to perform visual inspection on the lower surface of the composite positive electrode (c) on the second transfer device, and the fourth visual inspection device is used to perform visual inspection on the upper surface of the composite positive electrode (c) on the second correction and positioning device (50).

9. The solid-state battery stacking equipment according to claim 8, characterized in that, The solid-state battery stacking equipment also includes a second recycling device (70), the second recycling device (70), the second feeding device (30) and the stacking table (11) are arranged around the second correction and positioning device (50); The second transfer device is used to transfer the defective composite positive electrode (c) on the second correction and positioning device (50) to the second recycling device (70).

10. The solid-state battery stacking equipment according to claim 7, characterized in that, The solid-state battery stacking equipment further includes a third dust removal device, which is used to remove dust from the lower surface of the composite positive electrode (c) on the second transfer device; and / or The solid-state battery stacking equipment also includes a third iron removal device, which is used to remove iron filings from the lower surface of the composite positive electrode (c) on the second transfer device.

11. The solid-state battery stacking equipment according to claim 7, characterized in that, The solid-state battery stacking equipment further includes a fourth dust removal device, which is used to remove dust from the upper surface of the composite positive electrode (c) on the second alignment and positioning device (50); and / or The solid-state battery stacking equipment also includes a fourth iron removal device, which is used to remove iron filings from the upper surface of the composite positive electrode (c) on the second correction and positioning device (50).

12. The solid-state battery stacking equipment according to claim 1, characterized in that, The first feeding device (20) includes a first feeding clip (21), a second feeding clip (23), and a first transfer mechanism. The first feeding clip (21) is arranged on the side of the stacking table (11) away from the second feeding device (30), and the second feeding clip (23) is arranged on the side of the first feeding clip (21) away from the stacking table (11). The first transfer mechanism is used to transfer the bare negative electrode sheet (b) on the second feeding clip (23) to the first feeding clip (21), and the first transfer device is used to transfer the composite negative electrode sheet (a) or the bare negative electrode sheet (b) on the first feeding clip (21) to the stacking table (11).

13. The solid-state battery stacking equipment according to claim 12, characterized in that, The first feeding device (20) further includes a recovery clip (25), which is arranged between the first feeding clip (21) and the second feeding clip (23). The first transfer mechanism is used to transfer the trays on the first feeding clip (21) and the second feeding clip (23) to the recovery clip (25).

14. The solid-state battery stacking equipment according to claim 1, characterized in that, The stacking table (11) can be moved to the transfer station (B); The solid-state battery stacking equipment also includes a coating device, which includes a coating mechanism (81) and a second transfer mechanism. The coating mechanism (81) is arranged on one side of the transfer station (B), and the second transfer mechanism is used to transfer the battery cell (e) on the stacking table (11) located at the transfer station (B) to the coating mechanism (81).

15. The solid-state battery stacking equipment according to claim 14, characterized in that, The solid-state battery stacking equipment also includes a feeding conveyor line (90), and the second transfer mechanism is used to transfer the battery cell (e) on the coating mechanism (81) to the feeding conveyor line (90).

16. The solid-state battery stacking apparatus according to claim 15, characterized in that, The coating mechanism (81) includes a coating table (811) and a coating assembly (813). The coating table (811) and the unloading conveyor line (90) are respectively arranged on opposite sides of the transfer station (B). The coating assembly (813) is arranged on the side of the coating table (811) away from the transfer station (B). The second transfer mechanism is used to transfer the battery cell (e) on the stacking table (11) located at the transfer station (B) to the coating table (811), the coating assembly (813) is used to coat the battery cell (e) on the coating table (811), and the second transfer mechanism is also used to transfer the battery cell (e) on the coating table (811) to the unloading conveyor line (90).

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