Pushing device, film coating equipment and film coating method

Abstract

The invention discloses a material pushing device, film coating equipment and a film coating method. The pushing device comprises a transferring platform (100) and a pushing mechanism (200), wherein the transferring platform (100) extends in the first direction and is provided with a feeding area (150) and an operation area (160); the number of the material pushing mechanisms (200) is at least two, and each material pushing mechanism (200) comprises a first driving part (210), a second driving part (220) and a pushing part (230); the first driving part (210) is used for driving the second driving part (220) and the pushing part (230) to move in the first direction, so that materials (600) in the feeding area (150) are pushed to the operation area (160) through the pushing part (230); the second driving part (220) is used for driving the pushing part (230) to move in the second direction so as to be close to or away from the transferring platform (100), and the second direction and the first direction are arranged at an angle. According to the material pushing device, the at least two battery monomers are sequentially driven to move through the at least two material pushing mechanisms, the idle time of the film coating device is shortened, and the film coating efficiency is improved.

Description

Material pushing device, film coating equipment and film coating method Technical Field

[0001] The present application relates to the field of production equipment, and in particular to a material pushing device, film coating equipment and a film coating method. Background Art

[0002] As people become more aware of environmental protection, electric vehicles are rapidly gaining popularity in the automotive industry due to their energy-saving and environmentally friendly advantages. Electric vehicles are powered by batteries. During the battery manufacturing process, an insulating film is often applied to the exterior of each cell to provide insulation and protection.

[0003] In the process of wrapping the battery cell with insulating film, the pushing block is required to push the battery cell from the loading position to the wrapping position, and the wrapping device performs the wrapping operation on the battery cell at the wrapping position. After the wrapping is completed, the pushing block pushes the wrapped battery cell out of the wrapping position and then returns to the loading position. Only after the pushing block returns to the loading position can it continue to push the next battery cell into the wrapping position to complete the wrapping operation.

[0004] As can be seen from the above, the pusher block needs to go back and forth between the loading position and the coating position once to complete the coating operation of one battery cell, and the coating efficiency is low.

[0005] Summary of the Invention

[0006] In view of the above problems, the present application provides a pushing device, a film coating device and a film coating method, which can solve the problem of low film coating efficiency to a certain extent.

[0007] In a first aspect, the present application provides a pushing device, comprising:

[0008] A transfer platform extending along a first direction, the transfer platform having a feeding area and an operation area;

[0009] Pushing mechanism, the number of pushing mechanisms is at least two, the pushing mechanism includes a first driving part, a second driving part and a pushing part, the first driving part is connected to the second driving part, and the pushing part is installed on the second driving part; the first driving part is used to drive the second driving part and the pushing part to move along the first direction, so as to push the material in the feeding area to the operating area through the pushing part; the second driving part is used to drive the pushing part to move along the second direction to approach or move away from the transfer platform, and the second direction is set at an angle relative to the first direction.

[0010] In the technical solution of the embodiments of the present application, a pushing device can be applied to a film coating device to push a battery cell to the film coating device. During the film coating operation of a battery cell, since there are at least two pushing mechanisms, while the first pushing mechanism, driven by the first driving unit, pushes the battery cell from the feed area to the operating area, another battery cell can be placed in the feed area. After the first battery cell leaves the feed area a certain distance, the other pushing mechanism can push the other battery cell from the feed area toward the operating area. After the first pushing mechanism completes the pushing process of the battery cell, the second driving unit moves the first pushing mechanism a certain distance in the second direction away from the transfer platform. This ensures that when the first pushing mechanism moves toward the feed area, it does not interfere with the next pushing mechanism and the battery cell it pushes. When the first pushing mechanism moves to a position opposite the feed area, the second driving unit moves the first pushing mechanism in the second direction toward the transfer platform, allowing the first pushing mechanism to return to the feed area to facilitate the pushing of the next battery cell.

[0011] From the above, it can be seen that by using at least two pushing mechanisms, it is possible to push other battery cells toward the operating area through one or more other pushing mechanisms during the reciprocating movement of one pushing mechanism, thereby reducing the idle time of the operating area and improving the coating efficiency of the battery cells.

[0012] In some embodiments, the pushing device further includes a frame, the transfer platform is mounted on the frame, the first drive unit is mounted on the frame, and the first drive unit and the second drive unit are both located below the transfer platform.

[0013] In this arrangement, the frame supports the transfer platform to a certain height, which is convenient for matching the height of other operating devices (such as the coating device), and provides more installation space for the first drive unit and the second drive unit below the transfer platform.

[0014] In some embodiments, the transfer platform is provided with a through hole along the first direction, and at least a portion of the structure of the pushing portion extends above the through hole.

[0015] In this arrangement, since the pushing part is connected to the first driving part, and the first driving part is located below the transfer platform, part of the structure of the pushing part is located below the transfer platform, and the battery cell is above the transfer platform. Therefore, a through hole is provided to facilitate extending part of the structure of the pushing part directly from below the transfer platform to above the transfer platform, so as to facilitate contact with the battery cell to push the battery cell.

[0016] In some embodiments, the frame is provided with at least two first guide rails along the first direction, the number of the pushing mechanisms is the same as the number of the first guide rails, and the at least two second driving parts are respectively slidably connected to the at least two first guide rails in a one-to-one correspondence.

[0017] In this setting, the setting of the first guide rail makes the second drive unit more stable when moving along the first direction. At least two second drive units are slidably installed in a one-to-one correspondence with at least two first guide rails, so that at least two second drive units do not interfere with each other during movement.

[0018] In some embodiments, a sliding body is slidably mounted on the frame, a second guide rail is mounted on the sliding body along the second direction, and the pushing portion is slidably connected to the second guide rail.

[0019] In this arrangement, the arrangement of the sliding body facilitates the installation of the second guide rail, and the arrangement of the second guide rail can improve the stability of the pushing portion moving along the second direction.

[0020] In some embodiments, there are multiple second guide rails, the multiple second guide rails are spaced apart and arranged in parallel, and the pushing portion is slidably connected to the multiple second guide rails.

[0021] In this arrangement, the same pushing portion is slidably mounted on a plurality of second guide rails arranged in parallel, so that the shaking degree of the pushing portion during movement in the second direction is reduced and the movement is more stable.

[0022] In some embodiments, the pushing portion is detachably connected to the second guide rail.

[0023] In this arrangement, the pushing portion is detachably connected, so that pushing portions of different sizes can be replaced according to materials of different sizes.

[0024] In some embodiments, the pushing mechanism further includes a connecting portion, which is detachably connected to the pushing portion, and the connecting portion is slidably connected to the second guide rail.

[0025] In this arrangement, the arrangement of the connecting portion enables the installation position of the pushing portion to be closer to the transfer platform, that is, the size of the pushing portion can be smaller and the weight can be lighter, which facilitates the disassembly and replacement of the pushing portion.

[0026] In some embodiments, the connecting portion includes a first connecting plate extending along the second direction and a second connecting plate extending along the first direction.

[0027] In this arrangement, the arrangement of the first connecting plate and the second connecting plate enables the pushing portion to be moved closer to the operating area, thereby enabling the pushing portion to be sufficient to push materials of more sizes to the operating area.

[0028] In some embodiments, the first connecting plate is slidably connected to the second guide rail, the end of the second connecting plate away from the operating area is connected to the first connecting plate, and the end of the second connecting plate close to the operating area is detachably connected to the pushing portion.

[0029] In this arrangement, the second connecting plate is located closer to the transfer platform, and both the second connecting plate and the transfer platform extend along the first direction, thereby facilitating a more compact arrangement of the structure of the pushing device.

[0030] In some embodiments, the transfer platform is provided with two guide assemblies, each guide assembly extends along the first direction, and there is a gap between the two guide assemblies, and the pushing portion can extend into between the two guide assemblies through the gap.

[0031] In this arrangement, the arrangement of the guide assembly facilitates the movement of the material along the transfer platform, and the arrangement of the gap facilitates the contact between the pushing portion and the material to push the material along the first direction.

[0032] In some embodiments, a limiting structure is provided at the feeding area, and the limiting structure includes a third driving part and a telescopic part; the third driving part is used to drive the telescopic part to move to clamp the material at the feeding area, or the third driving part is used to drive the telescopic part to move above the material at the feeding area.

[0033] In this arrangement, the setting of the limiting structure can prevent the material placed in the feeding area by the clamping claws from being lifted up by the clamping claws and causing deviation or falling from the transfer platform.

[0034] In some embodiments, the pushing device also includes a controller and a first sensor. The first sensor and the first drive unit are respectively connected to the controller signal. The transfer platform is provided with multiple identification areas along the first direction. Each identification area is provided with at least one first sensor. The first sensor is used to detect whether there is material in the identification area. The controller is used to control the start and stop status of the first drive unit according to the first sensor.

[0035] In this setting, the first sensor detects how many materials are on the transfer platform and the position of each material, and controls whether to push the material based on the quantity and position of the material to avoid pushing the rear material forward and contacting the front material.

[0036] In some embodiments, the pushing device includes a controller, a second sensor and an alarm. The second sensor and the alarm are respectively connected to the controller signal. The second sensor is used to detect whether there is an object on the top of the material. The controller is used to control the alarm to sound when the second sensor detects an object.

[0037] In this setup, the second sensor detects whether there is an object on top of the material. If there is an object, an alarm is sounded, waiting for the operator to handle it. This can prevent the battery cells from being damaged during the film pressing process due to foreign objects on the top of the battery cells.

[0038] In some embodiments, the first direction is perpendicular to the second direction, the first direction is a horizontal direction, and the second direction is a height direction of the pushing device.

[0039] In this arrangement, the structure of the pushing device is more compact, reducing the floor space.

[0040] In a second aspect, a film coating device is provided, comprising: a film coating device and a material pushing device as in any technical solution, wherein the film coating device is installed in an operating area of ​​a transfer platform.

[0041] Since the film coating equipment includes the above-mentioned pushing device, it has at least all the beneficial effects of the pushing device, which will not be described in detail here.

[0042] In some embodiments, the film coating equipment further includes a loading device for moving the material to the feeding area of ​​the transfer platform.

[0043] In this arrangement, the loading device is arranged to facilitate moving the materials to the transfer platform.

[0044] In some embodiments, the loading device includes a clamping jaw, which is equipped with a third sensor. The pushing device includes a controller and an alarm. The third sensor and the alarm are respectively connected to the controller signal. The third sensor is used to detect whether there is material in the clamping jaw. The controller is used to control the alarm to sound when the clamping jaw moves toward the pushing device and the third sensor cannot detect the object.

[0045] In this setting, the third sensor can detect whether the material falls during the material transfer process of the loading device.

[0046] In some embodiments, the loading device also includes a first translation module, a second translation module, a rotation module and a clamp, the clamp is installed on the rotation module, the rotation module is installed on the second translation module, and the second translation module is installed on the first translation module; the clamp is used to clamp the material, the rotation module is used to drive the clamp to rotate, the second translation module is used to drive the rotation module to move along the third direction, and the first translation module is used to drive the second translation module to move along the fourth direction.

[0047] In this arrangement, the loading device can be used to move materials from different equipment or different types to the transfer platform.

[0048] In some embodiments, the pushing device includes a controller and a fourth sensor. The fourth sensor is used to detect whether there is material in the feeding area. The controller is connected to the feeding device and the fourth sensor signal respectively. The controller is used to control the start and stop status of the feeding device according to the signal feedback from the fourth sensor.

[0049] In this setting, the fourth sensor can detect whether there is material in the feeding area. When there is material in the feeding area, the start and stop status of the loading device can be controlled by the controller to prevent the loading device from continuing to move material to the feeding area.

[0050] In some embodiments, the coating equipment further includes a discharge device, which is installed on a side of the operation area away from the feeding area, and is used to move the coated material in a direction away from the coating device.

[0051] In this arrangement, the discharging device can move the coated material to a position away from the coating device, thereby preventing the coated material from accumulating at the coating device.

[0052] In a third aspect, the present application provides a coating method, which is applicable to the coating device in the above embodiment, and the coating method includes:

[0053] In a pushing mechanism, the first driving part drives the second driving part and the pushing part to move in a first direction, so that the pushing part drives the material to move from the feeding area of ​​the transfer platform to the operating area;

[0054] The material enters the operation area, and the coating device performs coating operation on the material in the operation area;

[0055] When the material is being coated, or after the coating operation is completed, the second driving unit drives the pushing unit to move in the second direction, so that the pushing unit moves away from the transfer platform;

[0056] The first driving part drives the second driving part and the pushing part to move along the first direction, so that the second driving part and the pushing part move from a position opposite to the operation area to a position opposite to the feeding area;

[0057] When the pushing portion moves to a position opposite to the feeding area, the second driving portion drives the pushing portion to move along the second direction, so that the pushing portion moves toward the feeding area in a direction close to the transfer platform;

[0058] After one pushing portion pushes the material to move along the first direction for a set distance or for a set time, another pushing portion pushes another material to move along the first direction.

[0059] Since the coating method applies the above coating device, it at least includes all the beneficial effects of the above coating device, which will not be repeated here.

[0060] In some embodiments, the coating method further comprises: during the process of the pushing portion moving the material along the first direction toward the operating area, the first sensor in each identification area detects whether there is material in the corresponding identification area;

[0061] When there is no material in the next identification zone close to the operation zone, the pushing unit pushes the material to the next identification zone;

[0062] When the material exists in the next identification zone close to the operation zone, the pushing part stops pushing the material.

[0063] In this setting, the first sensor detects how many materials are on the transfer platform and the position of each material, and controls whether to push the material based on the quantity and position of the material to avoid pushing the rear material forward and contacting the front material.

[0064] In some embodiments, the coating method further comprises: during the process of the material moving from the feeding area to the operating area, detecting by a second sensor whether there is an object on the top of the material;

[0065] When the second sensor detects that there is an object on the top of the material, the alarm sounds, and the first driving part stops driving the second driving part and the pushing part to move.

[0066] In this setup, the second sensor detects whether there is an object on top of the material. If there is an object, an alarm is sounded, prompting the operator to handle the situation. This prevents the battery cells from being damaged during the film pressing process due to foreign objects on top of the battery cells.

[0067] In some embodiments, the coating method further comprises:

[0068] When the clamping jaws of the feeding device hold the material and move it toward the feeding area, the third sensor detects whether there is material in the clamping jaws;

[0069] When the third sensor cannot detect the material, the alarm will sound.

[0070] In this setting, the third sensor can detect whether the material falls during the material transfer process of the loading device.

[0071] The above description is only an overview of the technical solution of the present application. In order to more clearly understand the technical means of the present application, it can be implemented in accordance with the contents of the specification. In order to make the above and other purposes, features and advantages of the present application more obvious and easy to understand, the specific implementation methods of the present application are listed below. BRIEF DESCRIPTION OF THE DRAWINGS

[0072] Various other advantages and benefits will become apparent to those skilled in the art upon reading the detailed description of the preferred embodiment below. The accompanying drawings are for illustration purposes only and are not to be considered as limiting the present application. The same reference numerals are used throughout the drawings to represent the same components. In the drawings:

[0073] FIG1 is a schematic structural diagram of a material pushing device in some embodiments of the present application at one viewing angle;

[0074] FIG2 is a schematic structural diagram of a film coating device using a pushing device according to some embodiments of the present application at one viewing angle;

[0075] FIG3 is a schematic structural diagram of a material pushing device in some embodiments of the present application from another perspective;

[0076] FIG4 is a schematic diagram of a half-section structure of a material pushing device according to some embodiments of the present application;

[0077] FIG5 is a schematic structural diagram of a material pushing device in some embodiments of the present application from another perspective;

[0078] FIG6 is a schematic structural diagram of a film coating device using a pushing device according to some embodiments of the present application from another perspective;

[0079] FIG7 is a schematic structural diagram of a loading device in a film coating device according to some embodiments of the present application.

[0080] The accompanying drawings in the specific implementation manner are as follows:

[0081] Reference numerals 100, transfer platform; 110, guide assembly; 111, support body; 112, first rolling element; 113, second rolling element; 120, limit structure; 121, third driving unit; 122, telescopic member; 130, first sensor; 140, second sensor; 150, feeding area; 160, operating area; 170, through hole; 180, fourth sensor; 200, pushing mechanism; 210, first driving unit; 220, second driving unit; 230, pushing unit; 300, frame; 310, first guide rail; 320, sliding body; 330, second guide rail; 340, connecting portion; 341, first connecting plate; 342, second connecting plate; 400, film encapsulation device; 500, loading device; 510, gripper; 520, third sensor; 530, first translation module; 540, second translation module; 550, rotation module; 600, material; 610, battery cell; 700, discharge device; AA, first direction; BB, second direction; CC, third direction; DD, fourth direction. DETAILED DESCRIPTION

[0082] The following embodiments of the technical solution of the present application will be described in detail with reference to the accompanying drawings. The following embodiments are only used to more clearly illustrate the technical solution of the present application and are therefore only examples and are not intended to limit the scope of protection of the present application.

[0083] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by those skilled in the art to which this application belongs; the terms used herein are only for the purpose of describing specific embodiments and are not intended to limit this application; the terms "including" and "having" and any variations thereof in the specification and claims of this application and the above-mentioned figure descriptions are intended to cover non-exclusive inclusions.

[0084] References herein to "embodiments" mean that a particular feature, structure, or characteristic described in connection with the embodiments may be included in at least one embodiment of the present application. The appearance of this phrase in various places in the specification does not necessarily refer to the same embodiment, nor does it constitute an independent or alternative embodiment that is mutually exclusive of other embodiments. It is understood, both explicitly and implicitly, by those skilled in the art that the embodiments described herein may be combined with other embodiments.

[0085] In the description of the embodiments of the present application, the term "plurality" refers to more than two (including two).

[0086] In the description of the embodiments of the present application, unless otherwise expressly specified or limited, technical terms such as "installed," "connected," "connected," and "fixed" should be understood in a broad sense. For example, they can refer to fixed connections, detachable connections, or integration; mechanical connections or electrical connections; direct connections or indirect connections through an intermediate medium; internal connections between two components or interactions between two components. Those skilled in the art can understand the specific meanings of the above terms in the embodiments of the present application based on specific circumstances.

[0087] As environmental pollution becomes increasingly serious, people's environmental awareness is gradually increasing. At this time, the rapid rise of the new energy industry has provided a broad space for the application and development of batteries. Batteries have been widely used, and more and more electrical devices, such as mobile phones, laptops, power tools and electric vehicles, choose batteries as power sources. People generally call the batteries used in the above-mentioned electrical devices power batteries, which are referred to as batteries below. During the production and manufacturing process of batteries, the battery cells need to be coated. During the coating process, a pusher block is usually used to push the battery cell from the initial position to the position of the coating device, and the coating device performs the coating operation on the battery cell. After the coating is completed, the pusher block pushes the coated battery cell out of the position of the coating device, and then returns to the initial position to continue pushing the next battery cell toward the coating device to achieve the coating operation.

[0088] However, the inventors further discovered that during the process of the pusher block returning from the film wrapping position to its initial position and pushing the battery cell from its initial position toward the film wrapping device, the film wrapping device is in an idle state, meaning it is not filming the battery cell. Therefore, the film wrapping device completes a relatively small number of film wrapping operations per unit time, indicating low film wrapping efficiency.

[0089] Based on the above considerations, and to address the issue of low cell coating efficiency, the inventors, after in-depth research, designed a pushing device for pushing cell bodies from a feed area to an operating area, where the coating device can coat the cell bodies located in the operating area. The feed area is used to accommodate the cell bodies and serves as the initial position of the cell bodies during their transfer by the pushing device. The pushing device includes at least two pushing mechanisms. After one pushing mechanism pushes a cell body a certain distance from the feed area to the operating area, another pushing mechanism can push another cell body from the feed area to the operating area. This allows the distance between the next cell body and the operating area to be less than the distance between the feed area and the pushing area after the previous cell body has completed coating. This shortens the time it takes for the next cell body to enter the operating area, reducing the idle time of the coating device. This increases the number of cell bodies coated per unit time, thereby improving coating efficiency.

[0090] The pusher device disclosed in the embodiments of this application can be used in coating equipment, which can be used to coat battery cells or other materials. The pusher device can also be used in other equipment that does not perform coating processes to push materials to an operating area for other equipment to operate on the materials, such as spraying, gluing, and transporting.

[0091] For the convenience of description in the following embodiments, the device used for the pushing device of this embodiment is a coating device, which is used to coat battery cells. That is, the description is made by taking battery cells as an example.

[0092] Please refer to Figures 1 and 2. The coating equipment includes a pushing device and a coating device 400. The pushing device is used to move the battery cell 610 to the operating area 160. The coating device 400 is used to perform coating operations on the battery cell 610 in the operating area 160, that is, to coat the battery cell 610 with a layer of insulating film. The insulating film is coated on the outer surface of the battery cell 610. The insulating film is weather-resistant, corrosion-resistant, has strong conformability, and high tensile strength. It plays the role of waterproof, dust-proof, scratch-proof, and leakage-proof for the battery cell 610. The insulating film has red, green, blue, white, black, etc., and blue insulating film is usually used.

[0093] As shown in Figures 1 and 3, the pushing device provided in this embodiment includes a transfer platform 100 and a pushing mechanism 200. The transfer platform 100 extends along a first direction (AA direction), and the transfer platform 100 has a feeding area 150 and an operating area 160; the number of the pushing mechanisms 200 is at least two, and the pushing mechanism 200 includes a first driving part 210, a second driving part 220 and a pushing part 230. The first driving part 210 is connected to the second driving part 220, and the pushing part 230 is installed on the second driving part 220; the first driving part 210 is used to drive the second driving part 220 and the pushing part 230 to move along the first direction (AA direction) to push the material 600 in the feeding area 150 to the operating area 160 through the pushing part 230; the second driving part 220 is used to drive the pushing part 230 to move along the second direction (BB direction) to approach or move away from the transfer platform 100, and the second direction (BB direction) is set at an angle relative to the first direction (AA direction).

[0094] The first direction (AA) and the second direction (BB) are arranged at an angle, meaning they are non-coincidental and non-parallel. When the pusher 230 pushes the battery cell 610 toward the operating area 160, both the pusher 230 and the battery cell 610 move along the first direction (AA). This means their movement trajectory extends along the first direction (AA). Because the second direction (BB) is non-coincidental and non-parallel to the first direction (AA), the pusher 230 can move away from the battery cell 610's trajectory after moving in the second direction. This prevents interference between the previous pusher 230 and the subsequent pusher 230 and battery cell 610 moving toward the operating area 160 when the previous pusher 230 returns from the operating area 160 to the infeed area 150.

[0095] For example, the angle between the first direction (AA direction) and the second direction (BB direction) may be 15°, 20°, 35°, 45°, 50°, 65°, 75°, 90°, etc.

[0096] The transfer platform 100 is used to support battery cells 610. The feed area 150 and the operating area 160 can both be used to temporarily store the battery cells 610, and the battery cells 610 can move relative to the transfer platform 100. The transfer platform 100 extends along a first direction (direction AA). In other words, the feed area 150 and the operating area 160 are spaced apart in the first direction (direction AA). By moving from the feed area 150 along the first direction (direction AA), one can reach the operating area 160. By moving from the operating area 160 along the first direction (direction AA), one can reach the feed area 150.

[0097] The pushing mechanism 200 is used to move the battery cells 610. One pushing mechanism 200 can move one battery cell 610 relative to the transfer platform 100. Because the pushing device includes at least two pushing mechanisms 200, at least two battery cells 610 can be pushed relative to the transfer platform 100 by the at least two pushing mechanisms 200.

[0098] The pushing mechanism 200 includes a first driving part 210, a second driving part 220 and a pushing part 230. The second driving part 220 is used to drive the pushing part 230 to move along the second direction (BB direction) relative to the transfer platform 100, and the first driving part 210 is used to drive the second driving part 220 and the pushing part 230 to move along the first direction (AA direction) relative to the transfer platform 100. The first driving part 210 can be an electric driving structure, a hydraulic driving structure or a pneumatic driving structure. Exemplarily, when the first driving part 210 is an electric driving structure, the first driving part 210 may include a motor, with the motor as the driving force supply end. The first driving part 210 also includes a screw, the output shaft of the motor is connected to the screw and the translation member, the screw is provided with a thread, the translation member is provided with a threaded hole, and the translation member is sleeved on the screw through the threaded hole. In this way, when the output shaft of the motor rotates, the translation member moves relative to the screw along the axial direction of the screw. The pushing portion 230 can be connected to the translation member, or the pushing portion 230 can be used as the translation member, and a threaded hole is provided on the pushing portion 230 to cooperate with the lead screw, so that the lead screw directly drives the pushing portion 230 to move. The axial direction of the lead screw is the first direction (AA direction). When the first driving portion 210 is a hydraulic driving structure, the first driving portion 210 includes a hydraulic cylinder, which includes a cylinder body and a connecting rod. The axial direction of the connecting rod is the first direction (AA direction). The pushing portion 230 is connected to the connecting rod. By controlling the amount of hydraulic oil in the cylinder body, the connecting rod is controlled to move along the first direction (AA direction), thereby driving the pushing portion 230 to move along the first direction (AA direction). When the first drive unit 210 is a pneumatic drive structure, the first drive unit 210 includes a cylinder, which includes a cylinder body and a connecting rod. The connecting rod is axially oriented in the first direction (direction AA). The pusher unit 230 is connected to the connecting rod. The amount of gas in the cylinder body is controlled to control the movement of the connecting rod in the first direction (direction AA), thereby driving the pusher unit 230 to move in the first direction (direction AA). The first drive unit 210 and the second drive unit 220 can have the same structure or different structures. When the first drive unit 210 and the second drive unit 220 have the same structure, they can have different structural dimensions.

[0099] In one specific embodiment, both the first drive unit 210 and the second drive unit 220 include a linear servo module. Taking the first drive unit 210 as an example, the linear servo module in the first drive unit 210 includes a servo motor, a lead screw, a coupling, a bearing, and a transmission block. The output shaft of the servo motor and the lead screw are both arranged along the first direction (direction AA), connected by a coupling. The lead screw is provided with a bearing, which is fixed relative to the transfer platform 100. The transmission block has a threaded hole that matches the external thread of the lead screw. The transmission block is mounted on the lead screw and is positioned at an upper limit on the lead screw so that the transmission block can move relative to the lead screw in the first direction (direction AA) but cannot rotate relative to the lead screw. The transmission block can be limited relative to the lead screw by the mounting area of ​​the transmission block, for example, if the mounting area of ​​the transmission block is insufficient to accommodate the rotation of the transmission block, or by providing a guide plate along the first direction (direction AA), on which the transmission block is slidably mounted, so that the transmission block can move relative to the guide plate in the first direction (direction AA) but cannot rotate relative to the guide plate. The second driving part 220 is installed on the transmission block, and the pushing part 230 is installed on the second driving part 220. During the rotation of the servo motor of the first driving part 210, the output shaft drives the screw to rotate, so that the transmission block drives the second driving part 220 and the pushing part 230 to move along the first direction (AA direction).

[0100] Since the pushing device provided in this embodiment includes at least two pushing mechanisms 200, after one pushing mechanism 200 pushes the battery cell 610 from the feeding area 150 to the operating area 160 by a distance L1, another pushing mechanism 200 can be used to push another battery cell 610 from the feeding area 150 to the operating area 160. When the previous pushing mechanism 200 returns to the feeding area 150 from the operating area 160, the pushing part 230 of the previous pushing mechanism 200 can be first moved a distance L4 along the second direction (BB direction) by the second driving part 220, so that the pushing part 230 moves a distance L4 away from the transfer platform 100, and then the second driving part 220 and the pushing part 230 are moved along the first direction (AA direction) by the first driving part 210. In this way, in the process of the previous pushing mechanism 200 returning to the feeding area 150, it is not in the same moving trajectory as the subsequent pushing mechanism 200 and the battery cell 610 pushed by it, thereby avoiding the previous pushing mechanism 200 and the subsequent pushing mechanism 200 from influencing each other. After the pushing portion 230 of the previous pushing mechanism 200 moves to a position corresponding to the feed area 150, the second driving portion 220 moves the pushing portion 230 toward the transfer platform 100, thereby moving the pushing portion 230 to the feed area 150 so that the pushing portion 230 can continue to push the battery cells 610 located in the feed area 150. In this way, after the previous battery cell 610 completes the coating operation, the distance between the next battery cell 610 and the operating area 160 is less than the distance between the feed area 150 and the pushing portion. In other words, the time it takes for the next battery cell 610 to move into the operating area 160 is shorter, thereby reducing the idle time of the coating device 400, thereby increasing the number of battery cells 610 that can be coated per unit time, thereby improving the coating efficiency.

[0101] It is worth noting that L1 is greater than the dimension L2 of the battery cell 610 in the first direction (AA direction). For example, if the length of the battery cell 610 is parallel to the first direction (AA direction), then L1 is greater than the length L2 of the battery cell. The position of the battery cell 610 in the feed area 150 when the pushing mechanism 200 is not pushing the battery cell 610 is considered the initial position. When the battery cell 610 moves a distance L2 in the first direction (AA direction), the battery cell 610 completely leaves the initial position, and the next battery cell 610 can now be placed in the initial position of the feed area 150. When the battery cell 610 moves a distance L1 in the first direction (AA direction), L1 is greater than L2, and L3 = L1 - L2. Therefore, there is at least a spacing L3 between the front and rear battery cells 610. The presence of L3 prevents the front and rear battery cells 610 from contacting each other and causing a short circuit.

[0102] L4 is greater than the dimension of the pushing portion 230 in the second direction (BB direction). For example, the second direction (BB direction) is the height direction of the pushing portion 230, and L4 is greater than the height of the pushing portion 230. The trajectory of the pushing portion 230 pushing the battery cell 610 toward the operating area 160 is taken as the first trajectory. After the distance moved in the height direction by the pushing portion 230 exceeds the height of the pushing portion 230, when the pushing portion 230 moves along the first direction (AA direction) toward the feeding area 150, it can be staggered with other pushing portions 230 moving along the first trajectory to avoid contact or collision between the pushing portion 230 returning to the feeding area 150 and other pushing portions 230 moving toward the operating area 160.

[0103] For example, after the previous pushing mechanism 200 completes pushing the battery cell 610 and has moved a distance L4 in the second direction (BB direction), the next pushing mechanism 200 is activated to push another battery cell 610 toward the operating area 160. Alternatively, after the previous pushing mechanism 200 has pushed the battery cell 610 out of the feeding area 150 but not into the operating area 160, the next pushing mechanism 200 is activated to push another battery cell 610 toward the operating area 160. In this case, on the transfer platform 100, the two pushing mechanisms 200 respectively push two battery cells 610 toward the operating area 160, and there is a gap between the two battery cells 610 in the first direction (AA direction). Alternatively, when the previous pushing mechanism 200 has pushed the battery cell 610 into the operating area 160 but the pushing mechanism 200 has not moved a distance L4 in the second direction (BB direction), the next pushing mechanism 200 is activated to push another battery cell 610 toward the operating area 160 .

[0104] It is worth noting that there are at least two pushing mechanisms 200. When there are two pushing mechanisms 200, while the pushing portion 230 of one pushing mechanism 200 is returning from the operating area 160 to the feeding area 150, the pushing portion 230 of the other pushing mechanism 200 is pushing the battery cells 610 from the operating area 160 to the feeding area 150 on the transfer platform 100. When there are more than two pushing mechanisms 200, while one pushing portion 230 is returning to the feeding area 150, the other pushing portions 230 may be spaced apart between the feeding area 150 and the operating area 160 of the transfer platform 100, thereby simultaneously pushing multiple battery cells 610. Multiple battery cells 610 are spaced apart on the transfer platform 100, while only one pushing portion 230 is in the process of returning to the feeding area 150. Alternatively, while one or more pushing parts 230 push the battery cells 610 from the operating area 160 to the feeding area 150 at the transfer platform 100 , multiple pushing parts 230 return from the operating area 160 to the feeding area 150 .

[0105] In the technical solution of the embodiment of the present application, the pushing device can be applied to the coating equipment to push the battery cell 610 to the coating device 400. During the coating operation of the battery cell 610, since there are at least two pushing mechanisms 200, while the first pushing mechanism 200, driven by the first driving part 210, pushes the battery cell 610 from the feeding area 150 to the operating area 160, another battery cell 610 can be placed in the feeding area 150. After the first battery cell 610 leaves the feeding area 150 by a certain distance, the other pushing mechanism 200 can push the other battery cell 610 from the feeding area 150 toward the operating area 160. After the first pushing mechanism 200 completes pushing the battery cell 610, the second driving unit 220 moves the first pushing mechanism 200 a certain distance in the second direction (BB direction) away from the transfer platform 100. This prevents interference between the first pushing mechanism 200 and the next pushing mechanism 200 and the battery cell 610 it pushes when the first pushing mechanism 200 moves toward the infeed area 150. When the first pushing mechanism 200 moves to a position opposite the infeed area 150, the second driving unit 220 moves the first pushing mechanism 200 in the second direction (BB direction) toward the transfer platform 100, returning the first pushing mechanism 200 to the infeed area 150 to facilitate pushing the next battery cell 610.

[0106] As can be seen from the above, by using at least two pushing mechanisms 200, it is possible to push other battery cells 610 toward the operating area 160 through one or more other pushing mechanisms 200 during the back and forth movement of one pushing mechanism 200, so as to reduce the idle time of the operating area 160 and improve the coating efficiency of the battery cells 610.

[0107] For the convenience of description, the following embodiments are described by taking the case where the number of the pushing mechanisms 200 in the pushing device of this embodiment is two as an example.

[0108] In some embodiments, after the pusher device is installed on the ground or a table, the transfer platform 100 is arranged parallel to the horizontal plane. That is, when the pusher mechanism 200 pushes the battery cell 610 to move, the battery cell 610 moves in a direction parallel to the horizontal plane. In this arrangement, the first direction (AA direction) is the horizontal direction, that is, the first direction (AA direction) is any direction parallel to the horizontal plane. The second direction (BB direction) can be a direction in the horizontal direction that is arranged at an angle relative to the first direction (AA direction). Alternatively, the second direction (BB direction) can be any direction that is inclined relative to the horizontal plane.

[0109] For example, as shown in Figures 1 to 3, in some embodiments, the first direction (AA direction) is perpendicular to the second direction (BB direction), the first direction (AA direction) is the horizontal direction, and the second direction (BB direction) is the height direction of the pusher. It is worth noting that the height direction of the pusher is the direction perpendicular to the horizontal plane, or in other words, the second direction (BB direction) is the up-down direction. In Figures 1 to 3, the first direction (AA direction) is the AA direction, and the second direction (BB direction) is the BB direction. The first drive unit 210 is used to drive the pusher 230 to reciprocate along a straight line in the horizontal plane, and the second drive unit 220 is used to drive the pusher 230 to move upward or downward. In this setting, after the first driving part 210 drives the second driving part 220 and the pushing part 230 to move along the first direction (AA direction) to the operating area 160, the second driving part 220 drives the pushing part 230 to move downward a certain distance to avoid other pushing mechanisms 200, and then the first driving part 210 drives the second driving part 220 and the pushing part 230 to move along the first direction (AA direction) to the bottom of the feeding area 150, and then the second driving part 220 drives the pushing part 230 to move upward to the feeding area 150.

[0110] In some embodiments, as shown in Figures 1 to 3, the pushing device also includes a frame 300, the transfer platform 100 is installed on the frame 300, the first drive unit 210 is installed on the frame 300, and the first drive unit 210 and the second drive unit 220 are both located below the transfer platform 100.

[0111] The frame 300 is used to support the transfer platform 100 to a certain height. The frame 300 can be formed by connecting multiple plates and / or multiple pillars. The frame 300 also provides a mounting space for the first drive unit 210, which can be installed on the frame 300.

[0112] The arrangement of the frame 300 facilitates matching the height of the transfer platform 100 with the coating device 400, enabling the coating device 400 to coat the battery cells 610 in the operating area 160 of the transfer platform 100. Furthermore, it provides more installation space for the first and second drive units 210, 220. Installing the first and second drive units 210, 220 below the transfer platform 100 lowers the overall center of gravity of the pusher device, resulting in greater stability. Furthermore, since at least part of the coating device 400 is located above the transfer platform 100, installing the first and second drive units 210, 220 below the transfer platform 100 avoids affecting the coating device 400's installation position. After the pusher 230 moves along the second direction (BB direction) to below the transfer platform 100, the pusher 230 remains below the transfer platform 100 during the entire process of moving from below the operating area 160 to below the feed area 150. Therefore, installing both the first drive unit 210 and the second drive unit 220 below the transfer platform 100 facilitates driving the pusher 230. Furthermore, since at least part of the film coating device 400 is located above the transfer platform 100, when the pusher 230 moves from the operating area 160 along the second direction (BB direction), moving the pusher 230 downward along the second direction (BB direction) can avoid interference with the film coating device 400, facilitating implementation.

[0113] In some embodiments, the transfer platform 100 is provided with a through hole 170 along the first direction (the AA direction), and at least a portion of the pushing portion 230 extends above the through hole 170 .

[0114] The through hole 170 extends through the transfer platform 100 along its height, or in other words, extends through the transfer platform 100 from top to bottom. One end of the through hole 170 is located in the feed area 150, or on the side of the feed area 150 away from the operating area 160. Since the pusher 230 is used to push the battery cell 610 along the transfer platform 100, the pusher 230 is located behind the battery cell 610 (i.e., on the side of the battery cell 610 away from the operating area 160). When the battery cell 610 is placed in the feed area 150, the pusher 230 can be located behind the battery cell 610 and also in the feed area 150, or behind the battery cell 610 and outside the feed area 150. The other end of the through hole 170 is located in the operating area 160, or adjacent to the operating area 160 and on the side of the operating area 160 near the feed area 150. Since the pushing portion 230 is located behind the battery cell 610, when the pushing portion 230 pushes the battery cell 610 to the operating area 160, the pushing portion 230 can be moved to the inside of the operating area 160, or it can be located on the side of the operating area 160 close to the feeding area 150, that is, the pushing portion 230 only pushes the battery cell 610 to the operating area 160, and the pushing portion 230 itself does not enter the operating area 160.

[0115] In this arrangement, since the pushing part 230 is connected to the first driving part 210, and the first driving part 210 is located below the transfer platform 100, part of the structure of the pushing part 230 is located below the transfer platform 100, and the battery cell 610 is above the transfer platform 100. Therefore, the through hole 170 is opened to facilitate the extension of part of the structure of the pushing part 230 from below the transfer platform 100 directly to above the transfer platform 100, so as to facilitate contact with the battery cell 610 to push the battery cell 610.

[0116] In one possible configuration, the width of the through hole 170 can be adapted to the width of the pushing portion 230, that is, there is a relatively small gap or no gap between the side surface of the pushing portion 230 and the inner wall of the through hole 170. In this way, when the pushing portion 230 moves along the first direction (direction AA), the inner wall of the through hole 170 plays a certain guiding and limiting role for the pushing portion 230. The width of the through hole 170 refers to the distance between the two inner walls of the through hole 170 in a direction perpendicular to the first direction (direction AA) in a horizontal plane.

[0117] In some embodiments, as shown in Figures 3 and 4, the frame 300 is provided with at least two first guide rails 310 along the first direction (AA direction), the number of the pushing mechanisms 200 is the same as the number of the first guide rails 310, and at least two second driving parts 220 are respectively slidably connected to the at least two first guide rails 310 in a one-to-one correspondence.

[0118] The first guide rail 310 is used to guide and limit the second driving unit 220. One second driving unit 220 is mounted on one first guide rail 310, and the second driving unit 220 can slide in the first direction (direction AA) relative to the first guide rail 310. Different second driving units 220 slide in the first direction (direction AA) on different first guide rails 310.

[0119] The setting of the first guide rail 310 makes the second driving part 220 more stable when moving along the first direction (AA direction). At least two second driving parts 220 are slidably installed in a one-to-one correspondence with at least two first guide rails 310, so that at least two second driving parts 220 do not interfere with each other during movement.

[0120] The first guide rail 310 and the frame 300 may be fixedly connected or detachably connected. The first guide rail 310 and the frame 300 may be welded or bolted. In a feasible embodiment, the frame 300 includes two side panels arranged at relative intervals, the top ends of the two side panels are connected to the transfer platform 100, the plate surfaces of the two side panels are perpendicular to the horizontal plane, and the two side panels are respectively connected to both sides of the width direction of the transfer platform 100. The width direction of the transfer platform 100 is the direction perpendicular to the first direction (AA direction) in the horizontal plane. Multiple first guide rails 310 can be installed on the two side panels respectively, or multiple first guide rails 310 can be installed at intervals on the same side panel. When the number of pushing mechanisms is two, the number of first guide rails 310 is two, one first guide rail 310 is installed on one side panel, and the other first guide rail 310 is installed on the other side panel. Optionally, the two first guide rails 310 are installed at the same height. Such an arrangement makes the weight of the mechanisms installed on both sides of the width direction of the pushing device more relatively consistent, which is beneficial for the center of gravity of the pushing device to be closer to the middle of the pushing device, thereby improving the stability of the pushing device.

[0121] In some embodiments, as shown in FIG3 and FIG4 , a sliding body 320 is slidably mounted on the frame 300 , a second guide rail 330 is mounted on the sliding body 320 along the second direction (BB direction), and the pushing portion 230 is slidably connected to the second guide rail 330 .

[0122] The sliding body 320 can be a plate-like structure, a columnar structure, a mesh structure, etc. The setting of the sliding body 320 facilitates the installation of the second guide rail 330. The setting of the second guide rail 330 can improve the stability of the pushing part 230 moving along the second direction (BB direction).

[0123] The sliding body 320 can be directly slidably assembled on the frame 300, the second driving part 220 is installed on the sliding body 320, the pushing part 230 is slidably assembled on the second guide rail 330, the first driving part 210 is transmission-connected to the sliding body 320, and the first driving part 210 drives the sliding body 320 to move along the first direction (AA direction) to drive the second driving part 220 and the pushing part 230 to move along the first direction (AA direction).

[0124] Alternatively, in other embodiments, the sliding body 320 is slidably assembled on the frame 300, the second driving part 220 is slidably assembled on the frame 300, the pushing part 230 is slidably assembled on the second guide rail 330, the first driving part 210 is transmission-connected to the second driving part 220, and in the process of the first driving part 210 driving the second driving part 220 to move along the first direction (AA direction), the second driving part 220 drives the pushing part 230 and the sliding body 320 to move along the first direction (AA direction).

[0125] In some embodiments, as shown in FIG. 4 , there are multiple second guide rails 330 , which are spaced apart and arranged in parallel, and the pushing portion 230 is slidably connected to the multiple second guide rails 330 .

[0126] It is worth noting that there are multiple second guide rails 330 on the same sliding body 320, and the multiple second guide rails 330 are parallel to each other. A single pusher 230 can be simultaneously slidably connected to multiple second guide rails 330 on the sliding body 320. When there are multiple sliding bodies 320, each sliding body 320 can be provided with multiple second guide rails 330.

[0127] In this setting, the same pushing part 230 is slidably installed on multiple parallel second guide rails 330. The multiple second guide rails 330 guide and limit different areas of the pushing part 230, so that the degree of shaking of the pushing part 230 during movement in the second direction (BB direction) is reduced, and the movement is smoother.

[0128] In some embodiments, the pusher 230 is detachably connected to the second guide rail 330. That is, the pusher 230 can be slidably mounted on and slide along the second guide rail 330, and the pusher 230 can also be detached from the second guide rail 330 without being damaged. This arrangement allows the pusher 230 to be replaced with a new one if it becomes damaged, or to be replaced with a pusher 230 of a different size or shape depending on the size or shape of the material 600 being pushed. For example, if the width of the material 600 being pushed [in the horizontal plane perpendicular to the first direction (direction AA)] is larger, a wider pusher 230 can be installed. If the end surface of the pushed material 600 (the surface in contact with the pushing portion 230) is flat, the surface of the pushing portion 230 that contacts the material 600 is flat. If the end surface of the pushed material 600 is curved, the surface of the pushing portion 230 that contacts the material 600 is a curved surface that matches the end surface of the material 600, thereby increasing the contact area with the material 600. If the end surface of the pushed material 600 is provided with a protruding structure, the surface of the pushing portion 230 that contacts the material 600 may be provided with a groove corresponding to the protruding structure. This ensures that during the pushing process, the area of ​​contact between the pushing portion 230 and the material 600 is not limited to the protruding structure, but also includes other areas of the end surface, thereby increasing the contact area and preventing concentrated force on the material 600.

[0129] In some embodiments, as shown in Figures 3 and 4, the pusher mechanism 200 further includes a connecting portion 340, which is detachably connected to the pusher portion 230 and slidably connected to the second guide rail 330. The pusher portion 230 is slidably connected to the second guide rail 330 via the connecting portion 340. The pusher portion 230 is detachably connected to the second guide rail 330 through the detachable connection with the connecting portion 340. That is, when the pusher portion 230 is separated from the connecting portion 340, the sliding connection between the pusher portion 230 and the second guide rail 330 is also disconnected. In this arrangement, on the one hand, the arrangement of the connecting portion 340 allows the pusher portion 230 to be installed closer to the transfer platform 100, which means that the pusher portion 230 can be smaller and lighter, facilitating the removal and replacement of the pusher portion 230. On the other hand, the arrangement of the connecting portion 340 facilitates the sliding assembly and detachable connection between the pusher portion 230 and the second guide rail 330.

[0130] In some embodiments, the connection portion 340 includes a first connection plate 341 extending along the second direction (BB direction) and a second connection plate 342 extending along the first direction (AA direction).

[0131] In this configuration, the arrangement of the first connecting plate 341 and the second connecting plate 342 enables the pushing portion 230 to move closer to the operating area 160 , thereby enabling the pushing portion 230 to push materials 600 of more sizes to the operating area 160 .

[0132] In some embodiments, the first connecting plate 341 is slidably connected to the second guide rail 330 , the end of the second connecting plate 342 away from the operating area 160 is connected to the first connecting plate 341 , and the end of the second connecting plate 342 close to the operating area 160 is detachably connected to the pushing portion 230 .

[0133] The first connecting plate 341 and the second connecting plate 342 can be fixedly connected or detachably connected. The connection between the first connecting plate 341 and the second connecting plate 342 can be any connection method, such as mortise and tenon connection, screw connection, welding, or adhesive bonding. Alternatively, the first connecting plate 341 and the second connecting plate 342 can be an integral structure, produced by an integral molding process.

[0134] The first connecting plate 341 may be provided with a groove that matches the second guide rail 330, with a portion of the second guide rail 330 extending into the groove, thereby enabling a sliding connection between the first connecting plate 341 and the second guide rail 330. Alternatively, the first connecting plate 341 may be provided with a slider that is slidably mounted on the second guide rail 330, thereby enabling a sliding connection between the first connecting plate 341 and the second guide rail 330.

[0135] One end of the second connecting plate 342 away from the operating area 160 is connected to the first connecting plate 341 . For example, the first connecting plate 341 may be connected to the middle area of ​​the bottom surface of the second connecting plate 342 away from the operating area 160 .

[0136] In this configuration, the second connecting plate 342 is located closer to the transfer platform 100. Both the second connecting plate 342 and the transfer platform 100 extend along the first direction (direction AA), thereby facilitating a more compact structure for the pusher device. When the transfer platform 100 is provided with a through hole 170, the second connecting plate 342 can be located inside the through hole 170, or the top of the second connecting plate 342 can be located inside the through hole 170, thereby further compacting the pusher device. Furthermore, the placement of the second connecting plate 342 allows the pusher portion 230 to be moved closer to the operating area 160 relative to the position of the second actuator, thereby facilitating the pushing of smaller material 600 into the operating area 160. Since the bottom part structure of the film coating device 400 may be installed below the transfer platform 100 in addition to the first drive part 210 and the second drive part 220 of the pushing mechanism 200, the second drive part 220 may not be able to move completely to the bottom of the operating area 160 depending on the installation position of the film coating device 400. At this time, due to the setting of the second connecting plate 342, the pushing part 230 is located at a position closer to the operating area 160 relative to the second driving part 220, that is, the second driving part 220 does not need to be moved to the bottom of the operating area 160, and the pushing part 230 can also be moved to the operating area 160, or the pushing part 230 can be moved to a position close to the operating area 160 to push the material 600 into the operating area 160.

[0137] In some embodiments, as shown in Figures 1, 4 and 5, the transfer platform 100 is provided with two guide components 110, each guide component 110 extends along the first direction (AA direction), and there is a gap between the two guide components 110, and the pushing portion 230 can extend into between the two guide components 110 through the gap.

[0138] The guide assembly 110 is used to provide guidance and limiting functions for the battery cells 610 in the transfer platform 100 , that is, to improve the smoothness of the movement of the battery cells 610 along the first direction (AA direction) and reduce the occurrence of deflection of the battery cells 610 .

[0139] The guide assembly 110 can have a variety of structural settings. For example, the guide assembly 110 can include guide ribs. The guide ribs of two guide assemblies 110 are arranged in parallel, and the distance between the two guide ribs is equal to or close to the width of the battery cell 610, so that the battery cell 610 moves along the guide channel formed between the two guide ribs.

[0140] Alternatively, in one feasible embodiment, the guide assembly 110 includes a support 111 and a plurality of rollers. The plurality of rollers are sequentially mounted on the support 111 along a first direction (direction AA). The rollers are capable of rolling relative to the support 111, and the rotation axes of the rollers are perpendicular to the first direction (direction AA) in a horizontal plane. In this arrangement, the battery cell 610 contacts the top of the rollers. As the battery cell 610 moves along the first direction (direction AA), the sliding friction between the battery cell 610 and the transfer platform 100 is converted into rolling friction, reducing the frictional force on the battery cell 610 and facilitating its propulsion. Alternatively, the rotation axes of the rollers are in the height direction of the pusher device. In this arrangement, the battery cell 610 contacts the side of the rollers, and both sides of the battery cell 610 contact the rollers of the two guide assemblies 110, respectively. As the battery cell 610 moves along the first direction (direction AA), the rollers on both sides limit the battery cell 610 and have minimal friction with the battery cell 610. Alternatively, as shown in FIG4 , in one possible configuration, a guide assembly 110 includes a plurality of first rolling elements 112 and a plurality of second rolling elements 113. The plurality of first rolling elements 112 are sequentially mounted on a support body 111 along a first direction (direction AA), and the plurality of second rolling elements 113 are sequentially mounted on the support body 111 along the first direction (direction AA). The rotation axis of the first rolling element 112 is in the height direction of the pusher device, and the rotation axis of the second rolling element 113 is perpendicular to the first direction (direction AA) in a horizontal plane. In this configuration, the battery cell 610 is located on top of the second rolling element 113 and to the side of the first rolling element 112. The first rolling elements 112 in the two guide assemblies 110 limit the width of the battery cell 610, and the second rolling elements 113 in the two guide assemblies 110 reduce the friction between the battery cell 610 and the transfer platform 100. The rolling elements can be rollers.

[0141] In some embodiments, as shown in Figures 3 and 4, a limiting structure 120 is provided at the feeding area 150, and the limiting structure 120 includes a third driving part 121 and a telescopic part 122; the third driving part 121 is used to drive the telescopic part 122 to move to clamp the material 600 at the feeding area 150, or the third driving part 121 is used to drive the telescopic part 122 to move above the material 600 at the feeding area 150.

[0142] When placing the battery cell 610 into the feed area 150, the operator can manually place the battery cell 610 therein, or the loading device 500 can move the battery cell 610 into the feed area 150. The loading device 500 includes a clamping jaw 510, which is used to clamp the battery cell 610. After the clamping jaw 510 clamps the battery cell 610 and moves the battery cell 610 into the feed area 150, the clamping jaw 510 is released and leaves the pushing device. However, in some cases, there may be some residual glue on the surface of the battery cell 610. During the process of opening or rising the clamping jaw 510, the battery cell 610 may be lifted up by the clamping jaw 510 due to the residual glue on its surface, causing the placement position of the battery cell 610 to deviate from the feed area 150 or even fall from the transfer platform 100. Due to the provision of the limiting structure 120 , when the battery cell 610 moves to the feeding area 150 , the limiting structure 120 can limit the battery cell 610 to a certain extent, thereby preventing the battery cell 610 from deflecting or falling from the transfer platform 100 due to collision with the clamping jaws 510 .

[0143] In one embodiment, the limiting structure 120 secures the battery cell 610 by clamping it. In this configuration, the limiting structure 120 includes a third drive unit 121 and a telescopic member 122. The third drive unit 121 is in transmission connection with the telescopic member 122, and the third drive unit 121 drives the telescopic member 122 to move and clamp the battery cell 610 on both sides. After the clamping jaws 510 are released for a certain period of time, and before the pusher 230 moves the battery cell 610, the third drive unit 121 drives the telescopic member 122 in the opposite direction for a certain period of time to release the battery cell 610, thereby facilitating the movement of the battery cell 610 by the pusher 230. The battery cell 610 can be clamped by a limiting structure 120. For example, a barrier is provided on one side of the feeding area 150, and a limiting structure 120 is provided on the other opposite side. One side of the battery cell 610 contacts the barrier. The limiting structure 120 moves the telescopic member 122 toward the direction close to the battery cell 610 through the third driving part 121, and makes the battery cell 610 abut against the barrier through the telescopic member 122, so that the barrier and the telescopic member 122 contact the battery cell 610 from both sides of the battery cell 610 respectively, thereby achieving clamping and fixing of the battery cell 610. The guide assembly 110 can also be used as a barrier, that is, a limiting structure 120 is provided on the other side opposite to a guide assembly 110, and the limiting structure 120 moves the telescopic member 122 toward the direction close to the battery cell 610 through the third driving part 121, and makes the battery cell 610 abut against the guide assembly 110 through the telescopic member 122, so that the guide assembly 110 and the telescopic member 122 contact the battery cell 610 from both sides of the battery cell 610 respectively, thereby achieving clamping and fixing of the battery cell 610.

[0144] Alternatively, two limiting structures 120 may be provided on opposite sides of the feed area 150, and the retractable members 122 in the two limiting structures 120 may clamp the battery cell 610 from both sides thereof, thereby achieving clamping and securing the battery cell 610. In this arrangement, the two retractable members 122 move in opposite directions during operation.

[0145] Alternatively, a limiting structure 120 includes a third drive unit 121, a transmission assembly, and two telescopic members 122. The third drive unit 121 is connected to the two telescopic members 122 through the transmission assembly. The two telescopic members 122 are arranged on opposite sides of the feeding area 150. The third drive unit 121 causes the two telescopic members 122 to move in opposite directions through the transmission assembly, thereby clamping the battery cell 610 from both sides or releasing the battery cell 610. The transmission assembly may include a connecting rod, with threads of opposite spiral directions provided on both sides of the connecting rod. One telescopic member 122 has a threaded hole that matches one end of the connecting rod, and the other telescopic member 122 has a threaded hole that matches the other end of the connecting rod. The two telescopic members 122 are respectively mounted at both ends of the connecting rod in a relative limiting manner so that the telescopic members 122 cannot rotate relative to the connecting rod and can only move relative to the connecting rod along the axial direction of the connecting rod. In this arrangement, when the third drive unit 121 drives the connecting rod to rotate, the two telescopic members 122 move in opposite directions.

[0146] In another embodiment, the limiting structure 120 limits the battery cell 610 by blocking the top of the battery cell 610. After the clamp 510 places the battery cell 610 in the feeding area 150, the battery cell 610 is limited by the guide assemblies 110 on both sides, the pusher 230 is limited at the rear, and the transfer platform 100 is limited at the bottom. Therefore, the limiting structure 120 can meet the limiting requirements of the battery cell 610 by limiting the top of the battery cell 610. In this setting, illustratively, the limiting structure 120 includes a third drive part 121 and a telescopic part 122. The third drive part 121 is transmission-connected to the telescopic part 122. The third drive part 121 drives the telescopic part 122 to move to move to the top of the battery cell 610, or move away from the top of the battery cell 610. The telescopic member 122 moves to the top of the battery cell 610 and cooperates with the transfer platform 100 to limit the battery cell 610 from the upper and lower sides respectively. After the battery cell 610 is moved away from the feeding area 150, the third driving part 121 drives the telescopic member 122 to move out of the area opposite to the feeding area 150, so that the clamp 510 can place the next battery cell 610 into the feeding area 150.

[0147] The battery cell 610 can be limited by a limiting structure 120, and the third drive unit 121 can drive the telescopic member 122 to move to an area opposite to the middle area of ​​the battery cell 610, thereby achieving better limiting of the battery cell 610. Alternatively, the battery cell 610 can be limited by at least two limiting structures 120, and at least one limiting structure 120 is provided on both sides of the width direction of the feeding area 150. The telescopic members 122 in the limiting structures 120 on both sides only need to move to above the edge area of ​​the top surface of the battery cell 610 to achieve limiting of the battery cell 610. In this arrangement, the moving distance of the telescopic member 122 is shorter, and a relatively good limiting effect can also be achieved. The third drive unit 121 can be an electric drive structure, a hydraulic drive structure, or a pneumatic drive structure.

[0148] As shown in Figures 2, 5 and 6, in some embodiments, the pushing device also includes a controller and a first sensor 130. The first sensor 130 and the first driving unit 210 are respectively connected to the controller signal. The transfer platform 100 is provided with multiple identification areas along the first direction (AA direction). Each identification area is respectively provided with at least one first sensor 130. The first sensor 130 is used to detect whether there is material 600 in the identification area. The controller is used to control the start and stop status of the first driving unit 210 according to the first sensor 130.

[0149] The controller may include any one or more structures, such as a chip, a PLC, or a single-chip microcomputer, capable of outputting control instructions based on received control signals. The first sensor 130 and the first driver 210 are each signal-connected to the controller. This signal connection may be via a signal cable or wireless signal transmission, such as Bluetooth or WiFi. The first sensor 130 is used to detect the presence of material 600 in the identification zone. The first sensor 130 may be a contact sensor, a through-beam photoelectric sensor, an infrared sensor, or the like. Upon detecting the presence of material 600 in the identification zone, the first sensor 130 transmits a first signal to the controller. Upon detecting the absence of material 600 in the identification zone, the first sensor 130 transmits a second signal to the controller. Alternatively, upon detecting the presence of material 600 in the identification zone, the first sensor 130 transmits a first signal to the controller. Upon detecting the absence of material 600 in the identification zone, the first sensor 130 does not transmit a signal to the controller. Upon receiving the first signal from the first sensor 130 in a particular identification zone, the controller controls the first driver 210 connected to the pusher 230 located behind the identification zone (i.e., away from the operating zone 160) to be turned off. This can prevent the rear pushing portion 230 from pushing the battery cell 610 forward and colliding with the battery cell 610 in the front identification area, causing damage or short circuit of the battery cell 610.

[0150] By setting up the identification area and the first sensor 130, it is possible to detect the number of battery cells 610 on the transfer platform 100 and the position of each battery cell 610, and control whether to push the battery cell 610 according to the number and position of the battery cell 610 to avoid the battery cell 610 at the rear being pushed forward and contacting the battery cell 610 at the front.

[0151] In one embodiment, the first sensor 130 is a through-beam photoelectric sensor. Each first sensor 130 includes a transmitter and a receiver. The transmitter emits light, and the receiver receives the light. When the light emitted by the transmitter is received by the receiver, there is no battery cell 610 blocking the area between the transmitter and the receiver, indicating that there are no battery cells 610 in the area between the transmitter and the receiver. When the light emitted by the transmitter is not received by the receiver, it indicates that there are battery cells 610 in the area between the transmitter and the receiver.

[0152] For example, the identification area is a rectangular area, and two first sensors 130 are disposed within the same identification area. The transmitting end and receiving end of one first sensor 130 are disposed at two opposite corners of the rectangular identification area, and the transmitting end and receiving end are disposed opposite each other. The light emitted by the transmitting end is inclined relative to the first direction (the AA direction). The transmitting end and receiving end of the other first sensor 130 are disposed at two other opposite corners of the rectangular identification area, and the transmitting end and receiving end are disposed opposite each other. The light emitted by the transmitting end is inclined relative to the first direction (the AA direction). The light emitted by the two transmitting ends is emitted along the diagonal lines of the rectangular identification area. In this arrangement, the two first sensors 130 emit intersecting light rays, thereby extending the range of recognition of the battery cells 610 within the identification area. The battery cells 610 can be detected while moving within the identification area. Furthermore, this arrangement only requires two first sensors 130 to achieve detection of the entire identification area.

[0153] Of course, in other embodiments, multiple first sensors 130 may be arranged along the first direction (direction AA) in the identification area, with the transmitting end and the receiving end of each first sensor 130 spaced apart and arranged opposite each other along the width direction of the transfer platform 100. In this arrangement, the spacing between two adjacent first sensors 130 can be adjusted so that the spacing between the two adjacent first sensors 130 is smaller than the length (dimension along the first direction (direction AA)) of the battery cell 610. In this way, at least one first sensor 130 can detect the presence of the battery cell 610 while the battery cell 610 is moving in the identification area.

[0154] In some embodiments, as shown in Figures 2 and 3, the pushing device includes a controller, a second sensor 140 and an alarm. The second sensor 140 and the alarm are respectively connected to the controller signal. The second sensor 140 is used to detect whether there is an object on the top of the material 600, and the controller is used to control the alarm to sound when the second sensor 140 detects an object.

[0155] The second sensor 140 may be a contact sensor, a through-beam photoelectric sensor, an infrared sensor, a CCD (Charge-coupled Device, Chinese full name: Charge Coupled Device) image sensor, etc. The alarm may include one or more combinations of a buzzer, an indicator light, a display screen, etc. When the alarm includes a buzzer, the buzzer sounds when the alarm sounds. When the alarm includes an indicator light, the indicator light may light up, flash, change color, etc. when the alarm sounds. When the alarm includes a display screen, the alarm may be given by displaying text or images on the display screen when the alarm sounds. The second sensor 140 detects whether there is an object on the top of the material 600. If there is an object, an alarm is issued for the operator to handle. This can prevent the battery cell 610 from being crushed due to foreign matter on the top of the battery cell 610 during the film pressing process.

[0156] When the pushing device includes the first sensor 130 , the second sensor 140 and the alarm, the first sensor 130 , the second sensor 140 , the alarm and the first driving part 210 may be connected to the same controller signal.

[0157] For example, in a specific embodiment, the second sensor 140 is a through-beam photoelectric sensor, including a transmitter and a receiver. The transmitter emits light, and the receiver is used to receive the light. When the light emitted by the transmitter is received by the receiver, there is no foreign matter blocking the area between the transmitter and the receiver, indicating that there is no foreign matter in the area between the transmitter and the receiver. When the light emitted by the transmitter is not received by the receiver, it means that there is a foreign matter in the area between the transmitter and the receiver. The installation positions of the receiver and the transmitter are both above the plane where the top surface of the battery cell 610 is located, or adjacent to the plane where the top surface of the battery cell 610 is located, so that the light emitted by the transmitter is located above the top surface of the battery cell 610. The light emitted by the transmitter is parallel to the top surface of the battery cell 610, and the distance between the light and the top surface of the battery cell 610 is relatively small, so that relatively small foreign matter can be detected. Furthermore, after the battery cell 610 is placed in the feed area 150, it may tilt, causing one side of the battery cell 610 to tilt. This tilting of the battery cell 610 may cause the battery cell 610 to collide with a structure in the film coating device, resulting in a short circuit in the battery cell 610. If the second sensor 140 detects an object above the height of the top surface of the battery cell 610, this may be due to a tilted side of the battery cell 610, causing the height of that side to exceed the height at which the top surface of the battery cell 610 should be located. In other words, the second sensor 140 can also detect whether one side of the battery cell 610 is tilted on the transfer platform, thereby preventing a short circuit caused by a tilted battery cell 610 colliding with the film coating device.

[0158] The receiving end and the transmitting end of the second sensor 140 are respectively mounted on the top surface of the transfer platform 100 or on the rack 300 through the mounting frame. The receiving end and the mounting frame, and the transmitting end and the mounting frame are respectively detachably connected or slidably connected, so that the height of the receiving end on the mounting frame is adjustable, and the height of the transmitting end on the mounting frame is adjustable. By adjusting the height of the transmitting end on the mounting frame, and adjusting the height of the receiving end on the mounting frame, the height of the emitted light can be changed, so that the installation height of the receiving end and the transmitting end can be adjusted to correspond to battery cells 610 of different heights. For example, a plurality of mounting positions can be set on the mounting frame along the height direction, and the transmitting end and the receiving end can be installed in different mounting positions to achieve fixed assembly at different heights.

[0159] As shown in FIG6 , this embodiment provides a film coating device, comprising: a film coating device 400 and the above-mentioned pushing device. The film coating device 400 is installed in the operation area 160 of the transfer platform 100. The film device is used to coat the outer surface of the battery cell 610 in the operation area 160 with an insulating film.

[0160] The film coating device 400 can be fixed to the transfer platform 100, or the film coating device 400 can be fixed to the frame 300. Since the transfer platform 100 is installed on the frame 300, the film coating device 400 is relatively positioned and installed relative to the transfer platform 100 by the frame, so that the relative position of the film coating device 400 and the transfer platform 100 remains unchanged. Alternatively, the film coating device 400 can be partially fixed to the transfer platform 100 and partially fixed to the frame 300, thereby improving the fixing stability of the film coating device 400 and improving the stability of the connection between the film coating device 400 and the pushing device.

[0161] During the coating process, one pushing mechanism 200 moves a battery cell 610 from the feed area 150 to the operating area 160. While the coating device 400 is coating the battery cell 610, another pushing mechanism 200 pushes another battery cell 610 placed in the feed area 150 toward the operating area 160. The pushing mechanism 200 can push the battery cell 610 into the operating area 160 and then return it to the feed area 150 while the battery cell 610 is undergoing the coating process in the operating area 160. Alternatively, the pushing mechanism 200 can also be used to push the coated battery cell 610 out of the operating area 160 to allow the battery cell 610 to proceed to the next process flow, after which the pushing mechanism 200 returns to the feed area 150. A discharge platform, a robot, or an inlet for the next process flow equipment can be located on the side of the transfer mechanism's operating area 160 away from the feed area 150. After the battery cell 610 leaves the operating area 160, it can be transferred to the next process flow.

[0162] Since the pushing device in the coating equipment provided in this embodiment includes at least two pushing mechanisms 200, at least when one battery cell 610 is in the coating process, the other battery cell 610 can be moved in a direction closer to the operating area 160, thereby reducing the idle time of the coating device 400, so that after the previous battery cell 610 is coated and leaves the operating area 160, the next battery cell 610 can move to the operating area 160 faster, so as to start the coating operation of the next battery cell 610 faster. Therefore, the coating equipment provided in this embodiment completes more coating operations per unit time, that is, it can perform coating operations on more battery cells 610, and the coating efficiency is higher.

[0163] The pushing mechanism is used to push the battery cells 610 from the feeding area 150 to the operating area 160 . The battery cells 610 in the feeding area 150 can be placed manually by an operator or by the loading device 500 .

[0164] As shown in FIG. 7 , in some embodiments, the film coating equipment further includes a loading device 500 , and the loading device 500 is used to move the material 600 to the feeding area 150 of the transfer platform 100 .

[0165] The loading device 500 is used to move the battery cell 610 to the feeding area 150, thereby improving the intelligence of the loading process and reducing the workload of the operator. By placing the battery cell 610 through the loading device 500, the placement position of the battery cell 610 can be more accurate and uniform, with small errors, and the placement angle is more suitable for the pushing part 230.

[0166] In some embodiments, the loading device 500 includes a clamp 510, the clamp 510 is equipped with a third sensor 520, and the pushing device includes a controller and an alarm. The third sensor 520 and the alarm are respectively connected to the controller signal. The third sensor 520 is used to detect whether there is material 600 in the clamp 510. The controller is used to control the alarm when the clamp 510 moves toward the pushing device and the third sensor 520 cannot detect the object.

[0167] The clamping jaws 510 are used to clamp and secure the battery cell 610. They may include a clamping actuator and multiple clamping parts. The multiple clamping parts define a clamping zone, within which the battery cell 610 is positioned. The clamping actuator controls the movement of the multiple clamping parts toward or away from each other. After the multiple clamping parts move toward each other, the multiple clamping parts move toward the battery cell 610 to reduce the clamping zone. Ultimately, the multiple clamping parts clamp the battery cell 610 in different directions on the outside of the battery cell 610, thereby clamping the battery cell 610. After the battery cell 610 is moved to the feeding zone 150, the multiple clamping parts move away from each other, thereby expanding the clamping zone and releasing the battery cell 610 for placement into the feeding zone 150. The clamping actuator may be connected to the multiple clamping parts via a transmission assembly, which may include a combination of one or more gears, a transmission wheel, a transmission belt, or the like. Alternatively, a clamping actuator may be provided for each group of clamping parts that move in the same direction. The clamping drive can be a cylinder.

[0168] In one feasible implementation, a flexible spacer is provided on the side of the clamping portion that is in contact with the battery cell 610. The flexible spacer can be made of flexible materials such as rubber, silicone, sponge, etc. The flexible spacer is in direct contact with the battery cell 610. On the one hand, it can increase the contact area between the battery cell 610 and the friction, thereby improving the clamping firmness. On the other hand, it can improve the protection of the outer surface of the battery cell 610 during movement and improve the buffering and shock absorption performance between the battery cell 610 and the clamping portion.

[0169] The third sensor 520 may be a contact sensor, a photoelectric sensor, an infrared sensor, or the like. The alarm may include one or more combinations of a buzzer, an indicator light, and a display screen. When the alarm includes a buzzer, the buzzer sounds when the alarm sounds. When the alarm includes an indicator light, the indicator light may light up, flash, change color, or other methods to indicate a warning when the alarm sounds. When the alarm includes a display screen, the alarm may be indicated by displaying text or an image on the display screen. When the third sensor 520 detects no object, it indicates that there is no battery cell 610 in the clamping jaw 510. At this time, the clamping jaw 510 is moving in a direction close to the pushing device, indicating that the clamping jaw 510 should be transporting the battery cell 610 to the feeding area 150. The absence of a battery cell 610 in the clamping jaw 510 indicates that the battery cell 610 has fallen. The alarm can alert the operator to handle the fallen battery cell 610 and control the clamping jaw 510 to return and re-grip a battery cell 610.

[0170] In some embodiments, the loading device 500 also includes a first translation module 530, a second translation module 540, a rotating module 550 and a clamp 510, the clamp 510 is installed on the rotating module 550, the rotating module 550 is installed on the second translation module 540, and the second translation module 540 is installed on the first translation module 530; the clamp 510 is used to clamp the material 600, the rotating module 550 is used to drive the clamp 510 to rotate, the second translation module 540 is used to drive the rotating module 550 to move along the fourth direction (DD direction), and the first translation module 530 is used to drive the second translation module 540 to move along the third direction (CC direction).

[0171] The first translation module 530 is used to drive the second translation module 540, the rotation module 550, and the clamping jaw 510 to move along a third direction (CC direction). The trajectory of the movement of the second translation module 540, the rotation module 550, and the clamping jaw 510 by the first translation module 530 is a straight line. The first translation module 530 can adopt an electric drive structure, a hydraulic drive structure, or a pneumatic drive structure. For example, the first translation module 530 includes a servo linear module, which is an electric drive structure.

[0172] The second translation module 540 is used to drive the rotation module 550 and the clamping jaw 510 to move along the fourth direction (DD direction). The trajectory of the movement of the rotation module 550 and the clamping jaw 510 by the second translation module 540 is a straight line. The second translation module 540 can adopt an electric drive structure, a hydraulic drive structure, or a pneumatic drive structure. For example, the first translation module 530 includes a servo linear module, which is an electric drive structure.

[0173] Of the third direction (CC direction) and the fourth direction (DD direction), one is a horizontal direction, and the other is a height direction (a direction perpendicular to the horizontal plane). For example, as shown in FIG7 , the third direction (CC direction) is a horizontal direction, and the fourth direction (DD direction) is a height direction. The fourth direction (DD direction) is the same direction as the second direction (BB direction). The third direction (CC direction) and the first direction (AA direction) can be the same direction or can be arranged at an angle relative to each other. The setting of the third direction (CC direction) depends on the relative positional relationship between the discharge port of the upstream device and the feed area 150 of the transfer platform 100. The discharge port of the upstream device and the feed area 150 of the transfer platform 100 are spaced apart along the third direction (CC direction). After the loading device 500 clamps the material 600 through the discharge port of the upstream device, the material 600 is moved along the third direction (CC direction) to above the feed area 150 under the drive of the first translation module 530.

[0174] The rotating module 550 is used to rotate the clamping jaws 510, thereby driving the battery cells 610 within the clamping jaws 510 to rotate to an angle where the length and width of the battery cells 610 are aligned with the length and width of the transfer platform 100. The rotating axis of the rotating module 550 extends perpendicular to the horizontal plane, ensuring that the height of the clamping jaws 510 remains constant during rotation. The rotating module 550 may include a rotating cylinder, motor, or other drive structure capable of achieving rotation.

[0175] In this arrangement, the loading device 500 can be used to move the material 600 at the upstream equipment located at different positions relative to the feeding area 150 to the feeding area 150 of the transfer platform 100 through the first translation module 530, the second translation module 540 and the rotary cylinder.

[0176] In some other embodiments, the loading device 500 may include a clamping jaw 510, and one or a combination of a first translation module 530, a second translation module 540, and a rotation module 550, so that the loading device 500 is arranged according to the relative position between the upstream equipment and the feeding area 150 of the pushing device. For example, if the upstream equipment and the feeding area 150 of the pushing device are spaced along the third direction (CC direction), the loading device 500 only needs the first translation module 530 to drive the clamping jaw 510 to clamp the battery cell 610 and move it to move the battery cell 610 from the upstream equipment to the feeding area 150 of the pushing device. If the upstream equipment and the feeding area 150 of the pushing device are spaced along the fourth direction (DD direction), the loading device 500 only needs the second translation module 540 to drive the clamping jaw 510 to clamp the battery cell 610 and move it to move the battery cell 610 from the upstream equipment to the feeding area 150 of the pushing device. If the upstream equipment is adjacent to the feeding area 150 and is set at an angle, it is possible to only set the rotating module 550 to drive the clamping jaws 510 to clamp the battery cell 610 and move it to a certain angle to move the battery cell 610 from the upstream equipment to the feeding area 150 of the pushing device.

[0177] In some embodiments, as shown in Figures 1 and 5, the pushing device includes a controller and a fourth sensor 180. The fourth sensor 180 is used to detect whether there is material 600 in the feeding area 150. The controller is respectively connected to the feeding device 500 and the fourth sensor 180 for signal transmission. The controller is used to control the start and stop status of the feeding device 500 according to the signal feedback from the fourth sensor 180.

[0178] The fourth sensor 180 can be a contact sensor, a through-beam photoelectric sensor, an infrared sensor, or the like. For example, two fourth sensors 180 are provided in the feed area 150. These through-beam photoelectric sensors include a transmitter and a receiver. The transmitter emits light, and the receiver receives the light. When the light emitted by the transmitter is received by the receiver, there is no battery cell 610 blocking the two ends, indicating that there are no battery cells 610 in the feed area 150. When the receiver cannot receive the light emitted by the transmitter, it indicates that there are battery cells 610 in the feed area 150.

[0179] The controller can be specifically connected to the signal of at least one of the first translation module 530 and the second translation module 540 in the loading device 500. When the fourth sensor 180 detects the presence of a battery cell 610 in the feeding area 150, the controller controls at least one of the first translation module 530 and the second translation module 540 to stop moving to avoid the loading device 500 from placing another battery cell 610 into the feeding area 150, thereby avoiding the battery cells 610 from being stacked, squeezed, or colliding with each other in the feeding area 150 and causing a short circuit.

[0180] In this setting, the fourth sensor 180 can detect whether there is material in the feeding area 150. When there is material in the feeding area 150, the start and stop status of the loading device 500 can be controlled by the controller to prevent the loading device 500 from continuing to transfer the material 600 to the feeding area 150, causing the material 600 to be squeezed and collided in the feeding area 150.

[0181] As shown in Figures 2, 5 and 6, in some embodiments, the coating equipment also includes a discharge device 700, which is installed on the side of the operating area 160 away from the feeding area 150. The discharge device 700 is used to move the coated material 600 in a direction away from the coating device 400.

[0182] The discharge device 700 is a mechanism capable of moving the battery cells 610. It may include one or more combinations of a lifting unit, a horizontal moving unit, and a rotating unit to move the coated battery cells 610 to a location away from the coating device 400. For example, the discharge device 700 is used to move the coated battery cells 610 to a shelf for temporary storage, or to move the coated battery cells 610 to the infeed position of equipment used in the next process step of the coating process in the battery cell manufacturing process.

[0183] In this arrangement, the discharging device can move the coated material to a position away from the coating device, thereby preventing the coated material from accumulating at the coating device.

[0184] In a specific implementation of this embodiment, the film coating device includes a pushing device, a loading device 500, a film coating device 400 and a discharging device 700, wherein:

[0185] The pushing device includes a frame 300, a transfer platform 100, two guide assemblies 110, two transfer mechanisms, a controller, a limit mechanism, an alarm, a first sensor 130, a second sensor 140 and a fourth sensor 180. A through hole 170 is provided on the transfer platform 100 along the first direction (AA direction). The first direction (AA direction) is a horizontal direction and is the length direction of the transfer platform 100. The transfer platform 100 is provided with a feeding area 150 and an operating area 160 at intervals along the first direction (AA direction). The transfer platform 100 is installed on the top of the frame 300. Two guide assemblies 110 are mounted on either side of the through hole 170 on the transfer platform 100. The guide assemblies 110 include a support body 111, a plurality of first rollers 112, and a plurality of second rollers 113. The plurality of first rollers 112 are mounted sequentially on the support body 111 along a first direction (direction AA), and the plurality of second rollers 113 are mounted sequentially on the support body 111 along the first direction (direction AA). The rotation axes of the first rollers 112 are in the height direction of the pusher device, and the rotation axes of the second rollers 113 are perpendicular to the first direction (direction AA) in the horizontal plane. The frame 300 includes at least two side panels spaced apart along the width direction of the transfer platform 100. The width direction of the transfer platform 100 is the horizontal direction perpendicular to the first direction (direction AA). The push mechanism includes a first driver, a second driver, and a push unit 230. In each of the two push mechanisms, one first driver is mounted on one side panel of the frame 300, and the other first driver is mounted on the other side panel of the frame 300. The two first drivers are mounted at the same height on both side panels, and are mounted on the sides of the two side panels facing each other. A first guide rail 310 is mounted on each side panel, and a sliding body 320 is slidably mounted on the first guide rail 310. The sliding body 320 is in transmission connection with the first driver 210, and the first driver 210 can drive the sliding body 320 to move in a first direction (direction AA). A second guide rail 330 is provided on the sliding body 320 along the second direction (BB direction). A second driver is also installed on the sliding body 320. A connecting portion 340 is slidably mounted on the second guide rail 330. The connecting portion 340 includes a first connecting plate 341 extending along the second direction (BB direction) and a second connecting plate 342 extending along the first direction (AA direction). The first connecting plate 341 is slidably connected to the second guide rail 330. The end of the second connecting plate 342 away from the operating area 160 is connected to the first connecting plate 341. The end of the second connecting plate 342 close to the operating area 160 is detachably connected to the pushing portion 230. Two limiting structures 120 are provided on opposite sides of the feeding area 150. The limiting structure 120 includes a third driving portion 121 and a telescopic member 122. The third driving portion 121 is transmission-connected to the telescopic member 122, and the third driving portion 121 drives the telescopic member 122 to move.The battery cell 610 is clamped from both sides of the battery cell 610 by the telescopic parts 122 in the two limiting structures 120 to achieve clamping and fixing of the battery cell 610. In this setting, the two telescopic parts 122 move in opposite directions during operation. The controller is signal-connected to the alarm, the first sensor 130, the second sensor 140 and the first driver respectively, and multiple identification areas are formed on the transfer platform 100 along the first direction (AA direction). The first sensor 130 is used to detect whether there is a battery cell 610 in the identification area. The first sensor 130 is a through-beam photoelectric sensor. A first sensor 130 includes a transmitting end and a receiving end. Two first sensors 130 are arranged in the same identification area. The transmitting end and the receiving end of a first sensor 130 are respectively arranged at two opposite corners of the rectangular identification area, and the transmitting end and the receiving end are arranged opposite to each other. The light emitted by the transmitting end is inclined relative to the first direction (AA direction). The transmitting end and receiving end of another first sensor 130 are respectively arranged at the other two opposite corners of the rectangular identification area, and the transmitting end and the receiving end are arranged opposite to each other, and the light emitted by the transmitting end is inclined relative to the first direction (AA direction). After the controller receives the first signal from the first sensor 130 of a certain identification area, it controls the first driving part 210 connected to the pushing part 230 located behind the identification area (that is, away from the direction of the operation area 160) to be in the off state. The second sensor 140 is a through-beam photoelectric sensor, including a transmitting end and a receiving end. When the receiving end cannot receive the light emitted by the transmitting end, it means that there is a foreign object in the area between the transmitting end and the receiving end, and the controller controls the alarm to sound an alarm. The installation positions of the receiving end and the transmitting end are both above the plane where the top surface of the battery cell 610 is located. The light emitted by the transmitting end is parallel to the top surface of the battery cell 610, and the distance between the transmitting end and the top surface of the battery cell 610 is relatively small.

[0186] The loading device 500 is used to move battery cells 610 from upstream equipment to the feeding area 150. The loading device 500 includes a third sensor 520, a first translation module 530, a second translation module 540, a rotation module 550, and a clamp 510. The third sensor 520 is connected to the controller for signal transmission. The third sensor 520 is used to detect whether there is material 600 in the clamp 510. When the clamp 510 moves toward the feeding area 150 and no material 600 is present in the clamp 510, the controller controls the alarm to sound an alarm. The second translation module 540 is transmission-connected to the first translation module 530, and the first translation module 530 is used to drive the second translation module 540 to move in the third direction (CC direction). The second translation module 540 is transmission-connected to the rotation module 550, and the second translation module 540 is used to drive the rotation module 550 to move in the fourth direction (DD direction). The rotating module 550 is in transmission connection with the clamping jaw 510, and the rotating module 550 is used to drive the clamping jaw 510 to rotate. The clamping jaw 510 is used to clamp or release the material 600. The controller is respectively connected to the second translation module 540 and the fourth sensor 180. When the fourth sensor 180 detects the presence of a battery cell 610 in the feeding area 150, the controller controls the second translation module 540 to stop, thereby preventing the second translation module 540 from driving the rotating module 550, the clamping jaw 510 and the battery cell 610 clamped in the clamping jaw 510 to move downward, so as to prevent the battery cell 610 from colliding with another battery cell 610 already in the feeding area 150.

[0187] The coating device 400 is installed on the transfer platform 100 or the rack 300 . The coating device 400 is used to perform coating processing on the battery cells 610 in the operation area 160 .

[0188] The discharge device 700 is installed on the rack 300, or installed next to the rack 300. The discharge device 700 is used to move the battery cells 610 that have completed the film to the shelf for temporary storage, or the discharge device 700 is used to move the battery cells 610 that have completed the film to the feeding position of the equipment used for the next process flow of the film in the battery cell production process.

[0189] This embodiment provides a coating method, which is applicable to the coating device in any of the above embodiments. The coating method includes:

[0190] In a pushing mechanism 200, the first driving part 210 drives the second driving part 220 and the pushing part 230 to move along the first direction (AA direction), so that the pushing part 230 drives the material 600 from the feeding area 150 of the transfer platform 100 to the operating area 160;

[0191] The material 600 enters the operation area 160, and the coating device 400 performs a coating operation on the material 600 in the operation area 160;

[0192] When the material 600 is being coated, or after the material 600 is coated, the second driving unit 220 drives the pushing unit 230 to move along the second direction (BB direction) so that the pushing unit 230 moves away from the transfer platform 100.

[0193] The first driving unit 210 drives the second driving unit 220 and the pushing unit 230 to move along the first direction (AA direction), so that the second driving unit 220 and the pushing unit 230 move from a position opposite to the operation area 160 to a position opposite to the feeding area 150;

[0194] When the pushing portion 230 moves to a position opposite to the feeding area 150 , the second driving portion 220 drives the pushing portion 230 to move along the second direction (BB direction) so that the pushing portion 230 moves toward the feeding area 150 in a direction close to the transfer platform 100 .

[0195] After one pushing portion 230 pushes the material 600 to move along the first direction (AA direction) for a set distance or a set time, another pushing portion 230 pushes another material 600 to move along the first direction (AA direction).

[0196] As can be seen from the above-described coating method, after one pusher 230 pushes the material 600 a certain distance or for a certain period of time, a certain distance is formed between the material 600 and the feed area 150. At this time, other pushers 230 can be used to push other battery cells 610 to move in the first direction (AA direction). At this time, there are at least two battery cells 610 on the transfer platform 100, and the two battery cells 610 are separated by a certain distance to prevent the two battery cells 610 from colliding with each other. When the previous battery cell 610 moves to the operating area 160 for coating, the distance between the next battery cell 610 and the operating area 160 is less than the distance between the feed area 150 and the operating area 160. In other words, after the previous battery cell 610 completes the coating operation and moves out of the operating area 160, the time it takes for the next battery cell 610 to continue moving to the operating area 160 is less than the time it takes for the battery cell 610 to move from the feed area 150 to the operating area 160. This shortens the time when there are no battery cells 610 in the operation area 160 , and also shortens the idle time of the coating device 400 , thereby increasing the number of battery cells 610 coated per unit time and improving the coating efficiency.

[0197] Optionally, the moving speeds of different pushing parts 230 can be the same or different, and the moving speed of the pushing part 230 located on the rear side is less than or equal to the moving speed of the adjacent pushing part 230 located on its front side, so that the gap between the two adjacent battery cells 610 remains unchanged or gradually increases to avoid contact between the two adjacent battery cells 610.

[0198] In this embodiment, the front side is the side close to the operating area 160 , and the rear side is the side close to the feeding area 150 .

[0199] In some embodiments, the coating method further includes: during the process of the pushing portion 230 moving the material 600 along the first direction (AA direction) toward the operating area 160, the first sensor 130 in each identification area detects whether the material 600 exists in the corresponding identification area;

[0200] When the material 600 is close to the next identification zone of the operation zone 160 and the material 600 does not exist, the pushing unit 230 pushes the material 600 to the next identification zone;

[0201] When the material 600 is present in the next identification zone close to the operation zone 160 , the pushing unit 230 stops pushing the material 600 .

[0202] For example, three identification zones are provided along a first direction (direction AA) on the transfer platform 100. These zones are referred to as the first, second, and third identification zones, respectively, from the feed zone 150 to the operating zone 160. The feed zone 150 includes the first identification zone, and the operating zone 160 includes the third identification zone. Each of the three identification zones is provided with a first sensor 130. When a first battery cell 610 is moved to the second identification zone by the first pusher 230, the first sensor 130 provides feedback to the controller indicating the presence of material 600 in the second identification zone. The controller then controls the first drive unit 210 corresponding to the pusher 230 corresponding to the battery cell 610 in the first identification zone to stop, thereby preventing the pusher 230 from moving another battery cell 610 toward the second identification zone. When the first battery cell 610 leaves the second identification zone and moves to the third identification zone, the first sensor 130 in the second identification zone provides feedback indicating the absence of material 600 in the second identification zone. The pusher 230 in the first identification zone can then push the battery cell 610 in the first identification zone to the second identification zone. Since the first sensor 130 of the third identification area feeds back that there is material 600 in the third identification area, after the pushing part 230 pushes the battery cell 610 into the second identification area, the controller controls the first driver of the pushing part 230 corresponding to the battery cell 610 in the second identification area to stop, so as to prevent the pushing part 230 from continuing to push the battery cell 610 in the second identification area to the third identification area.

[0203] In this setting, the first sensor 130 is used to detect whether there is material 600 in different identification areas of the transfer platform 100. When there is material 600 in the latter identification area, the first driving unit 210 corresponding to the material 600 in the previous identification area is stopped to avoid continuing to push the material 600 in the previous identification area to move to the latter identification area, so as to avoid contact or collision between the materials 600 in the two adjacent identification areas.

[0204] In some embodiments, the coating method further includes: during the process of the material 600 moving from the feeding area 150 to the operating area 160 , the second sensor 140 detects whether there is an object on the top of the material 600 ;

[0205] When the second sensor 140 detects that there is an object on the top of the material 600, the alarm sounds, and the first driving part 210 stops driving the second driving part 220 and the pushing part 230 to move.

[0206] The second sensor 140 can be installed in the feed area 150 and after the feed area 150, and at any position before the operation area 160. A plurality of second sensors 140 can be arranged at intervals after the feed area 150 and after the feed area 150, and before the operation area 160, to prevent foreign objects from falling on top of the material 600 during the transportation of the material 600. The second sensor 140 can detect foreign objects before the material 600 enters the operation area 160, so as to stop the movement of the material 600 toward the operation area 160, and avoid wrapping the foreign objects and the material 600 together in the film during the film coating process. If the second sensor 140 detects an object on top of the material 600, the alarm will sound to alert the operator, and the material 600 will be stopped from being transported until the operator handles the material 600 or cleans up the foreign objects. This can prevent the battery cells 610 from being crushed due to foreign objects on top of the battery cells 610 during the film coating process.

[0207] In some embodiments, the coating method further comprises:

[0208] When the clamping jaws 510 of the loading device 500 clamp the material 600 and move it toward the feeding area 150 , the third sensor 520 detects whether the material 600 exists in the clamping jaws 510 ;

[0209] When the third sensor 520 fails to detect the material 600, the alarm sounds.

[0210] The loading device 500 grips the material 600 with the clamping jaws 510 and moves toward the feeding area 150 to place the material 600 into the feeding area 150. When the loading device 500 is moving toward the feeding area 150, it indicates that the loading device 500 is transferring the material 600 to the feeding area 150. At this time, the material 600 should normally be present in the clamping jaws 510. If the material 600 is not present in the clamping jaws 510, it indicates that something has happened to the material 600, such as it has fallen or the material 600 has not been clamped. The alarm can alert the operator to check the specific situation.

[0211] The controller can be signal-connected to the first translation module 530, the second translation module 540, and the rotation module 550 in the loading device 500 respectively, and judge whether it is the process of moving the material 600 to the feeding area 150 through the working status of the first translation module 530, the second translation module 540, and the rotation module 550.

[0212] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit them. Although the present application has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some or all of the technical features therein. These modifications or replacements do not deviate the essence of the corresponding technical solutions from the scope of the technical solutions of the embodiments of the present application, and they should all be included in the scope of the claims and specification of the present application. In particular, as long as there is no structural conflict, the various technical features mentioned in the various embodiments can be combined in any way. The present application is not limited to the specific embodiments disclosed herein, but includes all technical solutions that fall within the scope of the claims.

Claims

1. A material pushing device, It is characterized in that include: A transfer platform (100), the transfer platform (100) extending along a first direction, the transfer platform (100) comprising a feeding area (150) and an operation area (160); A material pushing mechanism (200), wherein the number of the material pushing mechanisms (200) is at least two, and the material pushing mechanism (200) comprises a first driving part (210), a second driving part (220) and a pushing part (230), wherein the first driving part (210) is connected to the second driving part (220), and the pushing part (230) is installed on the second driving part (220); the first driving part (210) is used to drive the second driving part (220) and the pushing part (230) to move along the first direction, so as to push the material (600) in the feeding area (150) to the operating area (160) through the pushing part (230); the second driving part (220) is used to drive the pushing part (230) to move along the second direction to approach or move away from the transfer platform (100), and the second direction is set at an angle relative to the first direction.

2. The pusher device according to claim 1, It is characterized in that The pushing device also includes a frame (300), the transfer platform (100) is installed on the frame (300), the first driving part (210) is installed on the frame (300), and the first driving part (210) and the second driving part (220) are both located below the transfer platform (100).

3. The pusher device according to claim 2, It is characterized in that The transfer platform (100) is provided with a through hole (170) along the first direction, and at least a part of the structure of the pushing portion (230) extends above the through hole (170).

4. The pusher device according to claim 2, It is characterized in that The frame (300) is provided with at least two first guide rails (310) along a first direction, the number of the pushing mechanisms (200) is the same as the number of the first guide rails, and at least two of the second driving parts (220) are respectively slidably connected to the at least two first guide rails (310) in a one-to-one correspondence.

5. The pusher device according to claim 2 or 4, It is characterized in that A sliding body (320) is slidably mounted on the frame (300), a second guide rail (330) is mounted on the sliding body (320) along the second direction, and the pushing portion (230) is slidably connected to the second guide rail (330).

6. The pusher device according to claim 5, It is characterized in that There are a plurality of the second guide rails (330), the plurality of the second guide rails (330) are spaced apart and arranged in parallel, and the pushing portion (230) is slidably connected to the plurality of the second guide rails (330).

7. The pusher device according to claim 5, It is characterized in that The pushing portion (230) is detachably connected to the second guide rail (330).

8. The pusher device according to claim 7, It is characterized in that The pushing mechanism (200) further comprises a connecting portion (340), wherein the connecting portion (340) is detachably connected to the pushing portion; and the connecting portion is slidably connected to the second guide rail (330).

9. The pusher device according to claim 8, It is characterized in that The connecting portion (340) comprises a first connecting plate (341) extending along the second direction and a second connecting plate (342) extending along the first direction.

10. The pusher device according to claim 9, It is characterized in that The first connecting plate (341) is slidably connected to the second guide rail (330), one end of the second connecting plate (342) away from the operating area (160) is connected to the first connecting plate (341), and one end of the second connecting plate (342) close to the operating area (160) is detachably connected to the pushing portion.

11. The pusher device according to any one of claims 1 to 10, It is characterized in that The transfer platform (100) is provided with two guide assemblies (110), each of the guide assemblies (110) extends along the first direction, and there is a gap between the two guide assemblies (110). The pushing portion can extend into between the two guide assemblies (110) through the gap.

12. The pusher device according to any one of claims 1 to 11, It is characterized in that A limiting structure (120) is provided at the feeding area (150), and the limiting structure (120) comprises a third driving part (121) and a telescopic part (122); the third driving part (121) is used to drive the telescopic part (122) to move so as to clamp the material (600) at the feeding area (150), or the third driving part (121) is used to drive the telescopic part (122) to move above the material (600) at the feeding area (150).

13. The pusher device according to any one of claims 1 to 12, It is characterized in that The pushing device also includes a controller and a first sensor (130), the first sensor (130) and the first driving unit (210) are respectively connected to the controller signal, the transfer platform (100) is provided with a plurality of identification areas along the first direction, each of the identification areas is respectively provided with at least one of the first sensors (130), the first sensor (130) is used to detect whether there is material (600) in the identification area, and the controller is used to control the start and stop state of the first driving unit (210) according to the first sensor (130).

14. The pusher device according to any one of claims 1 to 13, It is characterized in that The pushing device comprises a controller, a second sensor (140) and an alarm, wherein the second sensor (140) and the alarm are respectively connected to the controller signal, the second sensor (140) is used to detect whether there is an object on the top of the material (600), and the controller is used to control the alarm to sound an alarm when the second sensor (140) detects an object.

15. The pusher device according to any one of claims 1 to 14, It is characterized in that The first direction is perpendicular to the second direction, the first direction is a horizontal direction, and the second direction is a height direction of the pushing device.

16. A coating device, It is characterized in that include: A film coating device (400) and a material pushing device as described in any one of claims 1 to 15, wherein the film coating device (400) is installed in the operating area (160) of the transfer platform (100).

17. The coating device according to claim 16, It is characterized in that The coating equipment further comprises a loading device (500), wherein the loading device (500) is used to move the material (600) to the feeding area (150) of the transfer platform (100).

18. The coating device according to claim 17, It is characterized in that The feeding device (500) includes a clamp (510), and the clamp (510) is equipped with a third sensor (520). The pushing device includes a controller and an alarm. The third sensor (520) and the alarm are respectively connected to the controller signal. The third sensor (520) is used to detect whether there is material (600) in the clamp (510). The controller is used to control the alarm to sound an alarm when the clamp (510) moves in a direction close to the pushing device and the third sensor (520) cannot detect the material (600).

19. The coating device according to claim 17, It is characterized in that The loading device (500) further comprises a first translation module (530), a second translation module (540), a rotation module (550) and a clamp (510), wherein the clamp (510) is mounted on the rotation module (550), the rotation module (550) is mounted on the second translation module (540), and the second translation module (540) is mounted on the first translation module (530); the clamp (510) is used for clamping the material (600), the rotation module (550) is used for driving the clamp (510) to rotate, the second translation module (540) is used for driving the rotation module (550) to move along a fourth direction, and the first translation module (530) is used for driving the second translation module (540) to move along a third direction.

20. The coating device according to claim 17, It is characterized in that The pushing device includes a controller and a fourth sensor (180), wherein the fourth sensor (180) is used to detect whether there is material in the feeding area (150), and the controller is respectively connected to the feeding device (500) and the fourth sensor (180) by signals, and the controller is used to control the start and stop state of the feeding device (500) according to the signal fed back by the fourth sensor (180).

21. The coating device according to any one of claims 17 to 20, It is characterized in that The coating equipment also includes a discharge device (700), which is installed on a side of the operating area (160) away from the feeding area (150), and the discharge device (700) is used to move the coated material (600) in a direction away from the coating device (400).

22. A coating method, It is characterized in that include: In a material pushing mechanism (200), a first driving part (210) drives a second driving part (220) and a pushing part (230) to move along a first direction, so that the pushing part (230) drives the material (600) to move from a material feeding area (150) of a transfer platform (100) toward an operating area (160); The material (600) enters the operating area (160), and the coating device performs a coating operation on the material (600) in the operating area (160); When the material (600) is undergoing the coating operation, or after the material (600) has completed the coating operation, the second driving unit (220) drives the pushing unit (230) to move along a second direction, so that the pushing unit (230) moves in a direction away from the transfer platform (100); The first driving part (210) drives the second driving part (220) and the pushing part (230) to move along the first direction, so that the second driving part (220) and the pushing part (230) move from a position opposite to the operating area (160) to a position opposite to the feeding area; When the pushing portion (230) moves to a position opposite to the feeding area (150), the second driving portion (220) drives the pushing portion (230) to move along a second direction, so that the pushing portion (230) moves to the feeding area (150) in a direction close to the transfer platform (100); After one of the pushing parts (230) pushes the material (600) to move along the first direction for a set distance or a set time, another of the pushing parts (230) pushes another of the materials (600) to move along the first direction.

23. The coating method according to claim 22, It is characterized in that The coating method further comprises: When the pushing portion (230) moves the material (600) along the first direction toward the operating area (160), the first sensor (130) in each identification area detects whether the material (600) exists in the corresponding identification area; When the material (600) does not exist in the next identification zone where the material (600) is close to the operation zone (160), the pushing unit (230) pushes the material (600) to the next identification zone; When the material (600) exists in the next identification zone close to the operating zone (160), the pushing unit (230) stops pushing the material (600).

24. The coating method according to claim 22, It is characterized in that The coating method further comprises: During the process of the material (600) moving from the feeding area (150) to the operating area (160), the second sensor (140) detects whether there is an object on the top of the material (600); When the second sensor (140) detects that there is an object on the top of the material (600), an alarm sounds, and the first driving part (210) stops driving the second driving part (220) and the pushing part to move (230).

25. The coating method according to claim 22, It is characterized in that The coating method further comprises: When the clamping jaw (510) of the feeding device (500) clamps the material (600) and moves it toward the feeding area (150), the third sensor (520) detects whether the material (600) exists in the clamping jaw (510); When the third sensor (520) fails to detect the material (600), the alarm sounds.

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