Material taking device and battery production equipment

Abstract

The utility model provides a material taking device and battery production equipment, and belongs to the technical field of batteries. The material taking device comprises a material bin, a material taking assembly and a material distributing assembly, the material bin comprises a bearing bottom plate, and the bearing bottom plate is used for stacking flaky materials; the material taking assembly comprises a material taking unit and a driving unit, and the material taking unit is used for sucking sheet materials in the stock bin; the driving unit is used for driving the material taking unit to move; the material separating assembly is used for separating the sheet materials sucked by the material taking assembly so that the material taking assembly can transfer the sheet materials one by one. According to the material taking device, the occurrence rate that the material taking assembly sucks a plurality of sheet-shaped materials at a time can be reduced, and the material taking efficiency of the material taking device is improved.

Description

Technical Field

[0001] The present application relates to the field of battery technology, and in particular to a material taking device and battery production equipment. Background Art

[0002] Energy conservation and emission reduction are the key to the sustainable development of the automobile industry. Electric vehicles have become an important part of the sustainable development of the automobile industry due to their advantages in energy conservation and environmental protection. For electric vehicles, battery technology is an important factor in their development.

[0003] During the battery assembly process, sheet materials, such as bottom support sheets, are required to coat the electrode assembly. Currently, the relevant material collection device is prone to absorb multiple sheets of sheet materials during the process of absorbing sheet materials, which affects the quality of the electrode assembly coating, reduces the material collection efficiency of the material collection device, and thus reduces the efficiency of the battery assembly process. Utility Model Content

[0004] The present application aims to solve at least one of the technical problems existing in the background technology. To this end, one purpose of the present application is to provide a material taking device and a battery production equipment to improve the material taking efficiency of the material taking device.

[0005] An embodiment of the first aspect of the present application provides a material picking device, which includes a material bin, a material picking assembly and a material dividing assembly, the material bin includes a supporting bottom plate, the supporting bottom plate is used to stack sheet materials; the material picking assembly includes a material picking unit and a driving unit, the material picking unit is used to suck the sheet materials in the material bin; the driving unit is used to drive the material picking unit to move; the material dividing assembly is used to separate the sheet materials sucked by the material picking assembly, so that the material picking assembly can transfer the sheet materials one by one.

[0006] In the technical solution of the embodiment of the present application, a material separation component is provided in the material picking device, and the material picking unit sucks the sheet material, and during the lifting and transfer process of the driving unit, the material separation component is used to separate the sheet materials that are adhered to each other, so as to achieve the goal that the driving unit only sucks a single sheet material each time it is transferred, so as to meet the requirements of electrode assembly coating, improve the material picking efficiency of the material picking device, and thus improve the efficiency of the battery in the assembly process.

[0007] In some embodiments, the material separation component includes a support member and at least one material separation unit located on the support member, and the material separation unit is arranged on the moving path of the sheet material after being sucked by the material taking component, so as to separate a plurality of sheet materials that are adhered to each other. By arranging the support member, the support member can limit the sheet material to prevent the stacked sheet materials from sliding off, and the material separation unit is arranged on the support member, and the sheet material is separated by contacting the material separation unit with the sheet material on the moving path after being sucked by the material taking component, which can improve the success rate of separating the sheet materials.

[0008] In some embodiments, the support member includes a first support member and a second support member extending in a vertical direction, the first support member and the second support member are respectively located at two ends of the sheet material along a first horizontal direction, and the material separation unit is located on a side surface of the first support member facing the sheet material and / or a side surface of the second support member facing the sheet material. By arranging the first support member and the second support member at two ends of the sheet material, the effect of the support member on limiting the sheet material can be improved. At the same time, the first support member and the second support member can both be provided with the material separation unit, which is more conducive to the arrangement of the material separation unit and the diversification of the way the material separation unit acts on the sheet material, which can further improve the success rate of separating the sheet materials.

[0009] In some embodiments, the material separation unit includes a stripping portion, the stripping portion has a plurality of sawtooth grooves arranged in a vertical direction, and the stripping portion is used to scrape the edge of the sheet material when the sheet material passes through. By providing a stripping portion with a plurality of sawtooth grooves, when the sheet material is sucked through the stripping portion, the sheet material sequentially contacts the sawtooth grooves of the stripping portion, and the sawtooth grooves scrape the edge of the sheet material, thereby separating the sheet materials that are adhered to each other, and improving the success rate of separating the sheet materials.

[0010] In some embodiments, the material separation unit further includes a blowing hole, the opening of the blowing hole is toward the sheet material for blowing air between adjacent sheet materials. By providing the blowing hole with the opening toward the sheet material, when the sheet material is lifted, the blowing hole blows air toward between adjacent sheet materials, and the air passes through between adjacent sheet materials, thereby separating the sheet materials that are adhered to each other.

[0011] In some embodiments, the number of blowing holes is multiple and they are arranged at intervals in the vertical direction. The material separation unit also includes a stripping part for stripping the edge of the sheet material. Along the movement direction of the sheet material after being sucked, at least one blowing hole is located upstream of the stripping part. The material separation unit includes blowing holes and a stripping part, and the friction of the serrated grooves of the stripping part and the flow of the gas in the blowing holes are used to improve the success rate of separating the sheet materials. At the same time, at least one blowing hole is located upstream of the stripping part, and the sheet material first passes through the gas in the blowing holes to reduce the tightness of the adhesion of adjacent sheet materials, and then the serrated grooves of the stripping part contact with the edge of the sheet material to further achieve the separation of adjacent sheet materials, thereby improving the reliability of separation.

[0012] In some embodiments, at least one of the first support and the second support includes an end plate located at one end of the sheet material along the first direction; and a side plate connected to the end plate and located at one end of the sheet material along the second direction, the second direction being a horizontal direction and intersecting the first direction; wherein the material separation unit includes a stripping portion for stripping the edge of the sheet material, the stripping portion being arranged on a surface of one of the end plate and the side plate facing the sheet material; and a blowing hole for blowing air between adjacent sheet materials, the blowing hole being arranged on a surface of the other of the end plate and the side plate facing the sheet material. By providing an end plate and a side plate through at least one of the first support and the second support, and selectively arranging a stripping portion or a blowing hole on the end plate and the side plate, the sheet material can be separated by utilizing the friction of the stripping portion and the gas flow of the blowing hole, and by jointly achieving separation of the sheet material in different directions.

[0013] In some embodiments, the side plate includes a first side plate, which is located at one end of the end plate along the second direction; a second side plate, which is arranged opposite to the first side plate and located at the other end of the end plate along the second direction; and air blowing holes are arranged on two opposite surfaces of the first side plate and the second side plate. By arranging the first side plate and the second side plate opposite to each other along the second direction, and arranging the air blowing holes on the first side plate and the second side plate facing each other, the air blowing holes of the first side plate and the second side plate blow air toward adjacent sheet materials together, which helps to separate adjacent sheet materials and improves the success rate of sheet material separation.

[0014] In some embodiments, the material separation unit further includes a scraper, which is located downstream of the stripping section along the moving direction of the sheet material after being sucked, and is used to separate multiple sheet materials passing through the stripping section. By arranging the scraper downstream of the stripping section, in the event that the stripping section fails to separate adjacent sheet materials, a guarantee is added, thereby improving the success rate of separating the sheet materials.

[0015] In some embodiments, the scraper blade includes a first scraper blade and a second scraper blade that are arranged relatively spaced apart along a first direction, the first scraper blade is connected to a first support, and the second scraper blade is connected to a second support; wherein the first scraper blade includes a first contact surface for contacting the sheet material, the second scraper blade includes a second contact surface for contacting the sheet material, the first contact surface and the second contact surface are arranged relatively to each other, and along the moving direction of the sheet material after being sucked, the distance between the first contact surface and the second contact surface along the first direction gradually decreases. By separately arranging the first scraper blade and the second scraper blade, when the sheet material is sucked and lifted, the contact area between the sheet material and the first scraper blade and the second scraper blade gradually increases, so that the friction between the sheet material and the first scraper blade and the second scraper blade also gradually increases, and the blocking force of the first scraper blade and the second scraper blade on the sheet material also gradually increases. If the blocking force of the first scraper blade and the second scraper blade is greater than the adhesion force of adjacent sheet materials, the adjacent sheet materials are separated, and the success rate of sheet material separation is further improved.

[0016] In some embodiments, the material taking unit further comprises a suction cup for sucking the sheet material on the supporting bottom plate, and a vibrator for vibrating the suction cup. By adding the vibrator to the suction cup, the adjacent sheet materials are separated by using the vibrator to generate vibration.

[0017] In some embodiments, the material taking device further comprises a lifting assembly, which is used to adjust the height of the carrying bottom plate. By setting the lifting assembly to adjust the height of the carrying bottom plate, the height of the stacked sheet materials can be adjusted, thereby improving the flexibility of the device and facilitating the material taking assembly to take the sheet materials.

[0018] In some embodiments, the material taking device further includes a first sensor for obtaining height information of the sheet material stacked on the supporting bottom plate; and a controller, which is respectively connected to the first sensor and the lifting component signal, and the controller is used to control the movement of the lifting component to adjust the height of the supporting bottom plate according to the height information. By setting the first sensor and the controller, the height of the supporting bottom plate is adjusted in real time by the controller to ensure that the movement stroke of the material taking component remains unchanged, improve the efficiency of sucking and transferring the sheet material, and thus improve the efficiency of the battery assembly process.

[0019] In some embodiments, the material taking device further includes a second sensor, which is used to detect the thickness of the sheet material sucked by the material taking unit after separation by the material separation component. By setting the second sensor, the second sensor is used to detect the thickness of the sucked and transferred sheet material, thereby detecting whether multiple sheets are sucked, thereby improving the coating quality of the electrode assembly.

[0020] An embodiment of the second aspect of the present application provides a battery production device, which includes the material taking device in the above embodiment, and the sheet material sucked by the material taking device is a bottom support sheet covering the electrode assembly and / or an insulating film covering the electrode assembly.

[0021] 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

[0022] In the accompanying drawings, unless otherwise specified, the same reference numerals throughout the multiple drawings represent the same or similar parts or elements. These drawings are not necessarily drawn to scale. It should be understood that these drawings only depict some embodiments disclosed in the present application and should not be regarded as limiting the scope of the present application.

[0023] Figure 1 This is a schematic diagram of the structure of a material taking device in some embodiments of the present application;

[0024] Figure 2 This is a schematic diagram of the structure of the material distribution assembly in some embodiments of the present application;

[0025] Figure 3 for Figure 2 A partial enlarged structural diagram of part A;

[0026] Figure 4 This is a schematic diagram of the structure of the stripping part of some embodiments of the present application;

[0027] Figure 5 It is a schematic diagram of the partial structure of the side panel of some embodiments of the present application;

[0028] Figure 6 for Figure 5 Sectional view of the middle BB part;

[0029] Figure 7 This is a schematic diagram of the scraper structure of some embodiments of the present application;

[0030] Figure 8 This is a schematic diagram of the structure after the scraper blades of some embodiments of the present application are installed;

[0031] Fig. 9 This is a schematic diagram of the lifting assembly structure of some embodiments of the present application;

[0032] Fig.10 A schematic diagram of a structure for fixing a first sensor in some embodiments of the present application;

[0033] Fig.11 This is a schematic diagram of the structure for fixing the second sensor in some embodiments of the present application.

[0034] Description of reference numerals:

[0035] 100, material taking device; 110, material bin; 111, bearing bottom plate; 112, material bin base; 120, material taking assembly; 121, material taking unit; 1211, suction cup; 1212, vibrator; 1213, air pipe joint; 122, fixing plate; 130, material dividing assembly; 131, first support member; 1311, end plate; 1312, side plate; 1313, first side plate; 1314, second side plate; 132, second support member; 133, stripping Material part; 1331, sawtooth groove; 134, blowing hole; 135, scraper; 1351, first scraper; 1352, second scraper; 1353, first contact surface; 1354, second contact surface; 140, lifting assembly; 141, servo motor; 142, screw module; 143, top plate; 150, first sensor; 160, second sensor; 170, fixed bracket; 171, slide; 180, support base; 200, sheet material. DETAILED DESCRIPTION

[0036] The following embodiments of the technical solution of the present application are described in detail in conjunction with the accompanying drawings. The following embodiments are only used to more clearly illustrate the technical solution of the present application, and are therefore only used as examples, and cannot be used to limit the scope of protection of the present application.

[0037] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by technicians in the technical field 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" in the specification and claims of this application and the above-mentioned figure descriptions and any variations thereof are intended to cover non-exclusive inclusions.

[0038] In the description of the embodiments of the present application, the technical terms "first", "second", etc. are only used to distinguish different objects, and cannot be understood as indicating or implying relative importance or implicitly indicating the number, specific order or primary and secondary relationship of the indicated technical features. In the description of the embodiments of the present application, the meaning of "multiple" is more than two, unless otherwise clearly and specifically defined.

[0039] Reference to "embodiments" herein means that a particular feature, structure, or characteristic described in conjunction with the embodiments may be included in at least one embodiment of the present application. The appearance of the phrase in various locations in the specification does not necessarily refer to the same embodiment, nor is it an independent or alternative embodiment that is mutually exclusive with other embodiments. It is explicitly and implicitly understood by those skilled in the art that the embodiments described herein may be combined with other embodiments.

[0040] In the description of the embodiments of the present application, the term "and / or" is only a description of the association relationship of the associated objects, indicating that there may be three relationships. For example, A and / or B can represent: A exists alone, A and B exist at the same time, and B exists alone. In addition, the character " / " in this article generally indicates that the associated objects before and after are in an "or" relationship.

[0041] In the description of the embodiments of the present application, the term "multiple" refers to more than two (including two). Similarly, "multiple groups" refers to more than two groups (including two groups), and "multiple pieces" refers to more than two pieces (including two pieces).

[0042] In the description of the embodiments of the present application, the technical terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, which are only for the convenience of describing the embodiments of the present application and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the embodiments of the present application.

[0043] In the description of the embodiments of the present application, unless otherwise clearly specified and limited, technical terms such as "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, and it can be the internal connection of two elements or the interaction relationship between two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the embodiments of the present application can be understood according to the specific circumstances.

[0044] At present, from the perspective of market development, the application of power batteries is becoming more and more extensive. Power batteries are not only used in energy storage power systems such as hydropower, thermal power, wind power and solar power stations, but also widely used in electric vehicles such as electric bicycles, electric motorcycles, electric cars, as well as military equipment and aerospace and other fields. With the continuous expansion of the application field of power batteries, the market demand is also constantly expanding.

[0045] A battery cell may be a primary battery or a secondary battery. A secondary battery refers to a battery cell that can be recharged to activate the active material after the battery cell is discharged and can continue to be used. The battery cell may be a lithium ion battery, a sodium ion battery, a sodium lithium ion battery, a lithium metal battery, a sodium metal battery, a lithium sulfur battery, a magnesium ion battery, a nickel metal hydride battery, a nickel cadmium battery, or a lead storage battery. The battery cell may be cylindrical, rectangular, or in other shapes.

[0046] A battery cell includes an electrode assembly and an electrolyte. The electrode assembly is the component in the battery cell where electrochemical reactions occur. The electrode assembly is mainly formed by winding or stacking the positive and negative electrode sheets, and a diaphragm is usually provided between the positive and negative electrode sheets. The parts of the positive and negative electrode sheets with active materials constitute the main body of the electrode assembly, and the parts of the positive and negative electrode sheets without active materials each constitute the tabs. The positive tab and the negative tab may be located together at one end of the main body or at both ends of the main body respectively. During the charge and discharge process of the battery, the positive active material and the negative active material react with the electrolyte, and the tabs connect the electrode terminals to form a current loop. The diaphragm is an insulating film, and the material may be PP (Polypropylene) or PE (Polyethylene), etc.

[0047] The battery cell also includes a base sheet, Mylar film and a shell. The base sheet and Mylar film are heat-melted, and then the heat-melted base sheet and Mylar film are coated on the outside of the electrode assembly. The shell encapsulates the electrode assembly coated with the base sheet and Mylar film to form a battery cell. The Mylar film seals and protects the electrode assembly, and the Mylar film can effectively insulate the electrode assembly and the shell from each other to avoid internal short circuits in the battery cell.

[0048] Since both the bottom support sheet and the Mylar film are sheet materials, they are taken from the top of a pile of stacked sheet materials. The material taking device may take in multiple sheet materials at the same time, which may cause poor thermal melting of the bottom support sheet and the Mylar film, causing the bottom support sheet and the Mylar film to melt and fall off, affecting the quality of the electrode assembly coating, so that the material needs to be taken again, reducing the material taking efficiency of the material taking device, and thus reducing the efficiency of the battery in the assembly process.

[0049] In order to solve the above technical problems, a material separation component is provided in the material picking device. During the material picking unit sucks the sheet material and the driving unit is used to lift and transfer the material, the material separation component is used to separate the sheet materials that are adhered to each other. The driving unit is transferred as much as possible, and the material picking unit only sucks a single sheet material each time to meet the requirements of electrode assembly coating, thereby improving the material picking efficiency of the material picking device and improving the efficiency of the battery in the assembly process.

[0050] The present application discloses a material taking device, which can be used for but is not limited to sucking the bottom support sheet in the battery cell. Any sheet materials that are adhered to each other due to factors such as static electricity and air humidity, or are adhered together due to their own viscosity, can be separated using the material taking device of the present application. The sheet materials include but are not limited to bottom support sheets, Mylar films, and other film materials. For example, the material taking device can suck and separate the stacked Mylar films for hot melting the Mylar films and the bottom support sheets; the material taking device can also suck and separate the stacked bottom support sheets.

[0051] The present application embodiment provides a material taking device 100, such as Figures 1 to 3 As shown, Figure 1 This is a schematic diagram of the structure of a material taking device in some embodiments of the present application; Figure 2 This is a schematic diagram of the structure of the material distribution assembly in some embodiments of the present application; Figure 3 for Figure 2 The partial enlarged structural diagram of part A in the middle. The material taking device 100 includes a material bin 110, a material taking assembly 120 and a material dividing assembly 130. The material bin 110 includes a bearing bottom plate 111, and the bearing bottom plate 111 is used to stack the sheet materials 200; the material taking assembly 120 includes a material taking unit 121 and a driving unit, and the material taking unit 121 is used to suck the sheet materials 200 in the material bin 110; the driving unit is used to drive the material taking unit 121 to move; the material dividing assembly 130 is used to separate the sheet materials 200 sucked by the material taking assembly 120, so that the material taking assembly 120 can transfer the sheet materials 200 one by one.

[0052] The sheet material 200 is a sheet-like structure object, which is light and thin. It may be adhered to each other due to factors such as static electricity and air humidity, or adhered together due to its own viscosity. When used, the adhered sheet material 200 needs to be separated. The projection of the sheet material 200 in the thickness direction can be a square, a rectangle, etc.

[0053] The silo 110 is a structure for accommodating and supporting sheet materials 200, and includes a bearing bottom plate 111. The bearing bottom plate 111 is used to stack the sheet materials 200 in sequence. The structural shape of the bearing bottom plate 111 can be adapted to the structural shape of the sheet materials 200. For example, if the sheet materials 200 are rectangular, the bearing bottom plate 111 can also be a rectangular plate. In some implementations, the silo 110 also includes a silo base 112, which is located below the bearing bottom plate 111 and is used to support the bearing bottom plate 111.

[0054] The picking component 120 includes a picking unit 121, which is a device or structure for sucking the sheet material 200 in the silo 110. For example, the picking unit 121 includes a suction cup 1211, which contacts the sheet material 200 through the suction cup 1211, and uses the air pipe joint 1213 to extract the gas in the suction cup 1211, and a negative pressure is generated inside the suction cup 1211, so that the suction cup 1211 and the sheet material 200 are tightly fitted, so that the picking unit 121 completes the suction of the top layer of the sheet material 200 on the supporting bottom plate 111.

[0055] The material taking component 120 further includes a driving unit, which is connected to the material taking unit 121 . The driving unit is used to drive the material taking unit 121 to move, thereby driving the sheet material 200 to move. The driving unit may be a device such as a robotic arm.

[0056] The material separation component 130 is a device or structure for separating the adhered sheet materials 200, which is mainly completed in cooperation with the material taking unit 121. The material taking unit 121 absorbs a single sheet material 200. Under the action of static electricity or viscosity, the absorbed sheet material 200 will bring up the sheet material 200 of the lower layer. The material separation component 130 is used to contact with the sheet material 200 of the lower layer to generate a blocking force, and the blocking force is greater than the adhesion force between adjacent sheet materials 200, so as to separate adjacent sheet materials 200. For example, the material separation component 130 can be a rough surface, and the friction force is generated by the rough surface contacting with the sheet material 200, and the friction force is used to separate the adjacent sheet materials 200.

[0057] In the technical solution of the embodiment of the present application, a material separation component 130 is provided in the material picking device 100, and during the material picking unit 121 sucks the sheet material 200, and during the lifting and transfer process by the driving unit, the material separation component 130 is used to separate the sheet materials 200 that are adhered to each other, so as to achieve each transfer of the driving unit as much as possible, and the material picking unit 121 only sucks a single sheet material 200 to meet the requirements of electrode assembly coating, thereby improving the material picking efficiency of the material picking device 100 and thus improving the efficiency of the battery during the assembly process.

[0058] According to some embodiments of the present application, Figure 1 and Figure 2 As shown, the material separation component 130 includes a support and at least one material separation unit located on the support. The material separation unit is arranged on the moving path of the sheet material 200 after being sucked by the material taking component 120, so as to separate multiple sheet materials 200 that are adhered to each other.

[0059] The support member can be understood as a side plate of the silo 110. The support member and the bearing bottom plate 111 form the silo 110. The sheet materials 200 on the bearing bottom plate 111 are stacked along the extension direction of the support member. After being sucked by the material taking unit 121 in the material taking assembly 120, the sheet materials 200 move upward along the extension direction of the support member and leave the silo 110. A material separation unit is provided on the support member. The material separation unit is located on the upward movement path of the sheet materials 200 along the extension direction of the support member. Before the sheet materials 200 leave the silo 110, the material separation unit acts on the sucked sheet materials 200 and the sheet materials 200 that adhere to it in sequence, and the sheet materials 200 that adhere to each other are separated under the action of the material separation unit.

[0060] It should be noted that the effect between the material separation unit and the sheet material 200 may be an interaction force generated by direct contact of the objects, or an interaction force formed by other indirect means. Adjacent and mutually adhered sheet materials 200 may be separated from each other under the influence of this force.

[0061] By setting up a support member, the support member can limit the sheet material 200 to prevent the stacked sheet material 200 from sliding off, and a material separation unit is set on the support member. On the moving path of the sheet material 200 after being sucked up by the material picking component 120, the material separation unit is used to contact and separate it, which can improve the success rate of separating the sheet material 200.

[0062] According to some embodiments of the present application, Figure 1 and Figure 2 As shown, the support member includes a first support member 131 and a second support member 132 extending in a vertical direction. The first support member 131 and the second support member 132 are respectively located at two ends of the sheet material 200 along a first horizontal direction, and the material dividing unit is located on a side surface of the first support member 131 facing the sheet material 200 and / or a side surface of the second support member 132 facing the sheet material 200.

[0063] For the sake of convenience, the projection of the sheet material 200 in the thickness direction is a rectangle as an example, the length direction of the sheet material 200 is the first direction, and the first direction is Figure 2 In the X direction, the width direction of the sheet material 200 is the second direction. Figure 2 Center Y direction.

[0064] The support members include a first support member 131 and a second support member 132. The first support member 131 and the second support member 132 can be used as side panels of the silo 110 and are respectively located at both ends of the sheet material 200. For example, the first support member 131 and the second support member 132 are respectively located at both ends of the sheet material 200 in a first direction. The first support member 131, the second support member 132 and the supporting bottom plate 111 form the silo 110. One of the first support member 131 and the second support member 132, or both of them, is provided with a material separation unit facing one side of the sheet material 200, and the sheet materials 200 that are adhered to each other are separated under the force of the material separation unit.

[0065] By respectively arranging the first support member 131 and the second support member 132 at the two ends of the sheet material 200, the effect of the support members on limiting the sheet material 200 can be improved. At the same time, both the first support member 131 and the second support member 132 can be provided with a material dividing unit, which is more conducive to the arrangement of the material dividing unit and the diversification of the action mode of the material dividing unit on the sheet material 200, which can further improve the success rate of separating the sheet material 200.

[0066] According to some embodiments of the present application, Figure 2 and Figure 4 As shown, Figure 4 The stripping unit includes a stripping portion 133 having a plurality of sawtooth grooves 1331 arranged along a vertical direction, and the stripping portion 133 is used to strip the edge of the sheet material 200 when the sheet material 200 passes through.

[0067] The stripping part 133 is a structure for separating two adjacent sheet materials 200 by friction, and can be located on the moving path of the sheet material 200 along the first support member 131 and the second support member 132, respectively. The stripping part 133 has a plurality of sawtooth grooves 1331 arranged in the vertical direction. When the sheet material 200 is sucked through the stripping part 133, the edges of both ends of the sheet material 200 in the first direction contact the sawtooth grooves 1331, respectively, and friction is generated between the sawtooth grooves 1331 and the sheet material 200. When the friction between the sawtooth grooves 1331 and the sheet material 200 is greater than the adhesion between the two adjacent sheet materials 200, the two sheet materials 200 are separated. The depth of the sawtooth grooves 1331 on the stripping part 133 and the spacing between adjacent teeth can be determined according to actual needs.

[0068] It should be noted that the stripping portion 133 can be fixed on the first support member 131 and the second support member 132 as a separate component; the stripping portion 133 can also be a part of the first support member 131 or the second support member 132, that is, the stripping portion 133 and the first support member 131 or the second support member 132 are manufactured and formed integrally.

[0069] By providing a stripping portion 133 with a plurality of serrated grooves 1331, when the sheet material 200 is sucked through the stripping portion 133, the sheet material 200 contacts the serrated grooves 1331 of the stripping portion 133 in sequence, and the serrated grooves 1331 slice the edges of the sheet material 200, thereby separating the sheet materials 200 that are stuck to each other, thereby improving the success rate of separating the sheet materials 200.

[0070] According to some embodiments of the present application, Figure 3 , Figure 5 and Figure 6 As shown, Figure 5 It is a schematic diagram of the partial structure of the side panel of some embodiments of the present application; Figure 6 for Figure 5 The material distribution unit further comprises a blowing hole 134 , the opening of the blowing hole 134 faces the sheet material 200 so as to be used for blowing air between adjacent sheet materials 200 .

[0071] The blowing holes 134 are structures for separating two adjacent sheet materials 200 by generating a force through gas flow, and they can be located on the moving path of the sheet material 200 along the first support member 131 and the second support member 132. There can be multiple blowing holes 134, and the opening size of the blowing holes 134 can be determined according to actual needs. The specific arrangement form can include a matrix arrangement, a single row arrangement, etc. The opening of the blowing holes 134 faces the sheet material 200.

[0072] Exemplarily, the blowing holes 134 are respectively arranged at the two ends of the sheet material 200 in the first direction. When the sheet material 200 is lifted, the blowing holes 134 on the first support member 131 and the second support member 132 at the two ends of the sheet material 200 blow air toward each other along the first direction, and the gas passes through between adjacent sheet materials 200, thereby separating the sheet materials 200 that are adhered to each other.

[0073] By providing the blowing holes 134 opening toward the sheet materials 200 , when the sheet materials 200 are sucked, the blowing holes 134 blow air toward between adjacent sheet materials 200 , and the gas passes through between adjacent sheet materials 200 , thereby separating the sheet materials 200 that are stuck to each other.

[0074] According to some embodiments of the present application, Figure 3 As shown, there are multiple blowing holes 134 which are spaced apart in the vertical direction. The material dividing unit also includes a stripping portion 133 for stripping the edge of the sheet material 200. Along the movement direction of the sheet material 200 after being sucked, at least one blowing hole 134 is located upstream of the stripping portion 133.

[0075] The material dividing unit includes a stripping portion 133 for dividing the edge of the sheet material 200 and a plurality of blowing holes 134. The stripping portion 133 has a plurality of sawtooth grooves 1331 arranged in the vertical direction. The plurality of blowing holes 134 are arranged at intervals along the extending direction of the first support member 131 and the second support member 132. The sawtooth grooves 1331 and the blowing holes 134 can be located on the same plane of the first support member 131 or on different planes of the first support member 131. Similarly, the sawtooth grooves 1331 and the blowing holes 134 can be located on the same plane of the second support member 132 or on different planes of the second support member 132.

[0076] At least one blowing hole 134 is located upstream of the stripping portion 133 . It can be understood that after being sucked, the sheet materials 200 stacked on the supporting base plate 111 are first acted upon by the gas in the blowing hole 134 along the moving direction after being sucked, and then separated by friction through the stripping portion 133 .

[0077] like Figures 1 to 3As shown, the sheet material 200 moves upward after being sucked, and the lowest blowing hole 134 is located below the lowest point of the stripping portion 133 .

[0078] The material dividing unit includes a blowing hole 134 and a stripping portion 133, and utilizes the friction of the serrated groove 1331 of the stripping portion 133 and the flow of gas in the blowing hole 134 to improve the success rate of separating the sheet material 200. At the same time, at least one blowing hole 134 is located upstream of the stripping portion 133, and the sheet material 200 first passes through the action of the gas in the blowing hole 134 to reduce the tightness of adhesion between adjacent sheet materials 200, and then the serrated groove 1331 of the stripping portion 133 contacts the edge of the sheet material 200 to further achieve separation of adjacent sheet materials 200, thereby improving the reliability of separation.

[0079] According to some embodiments of the present application, Figure 2 As shown, at least one of the first support member 131 and the second support member 132 includes an end plate 1311 and a side plate 1312, the end plate 1311 is located at one end of the sheet material 200 along the first direction; the side plate 1312 is connected to the end plate 1311 and is located at one end of the sheet material 200 along the second direction, the second direction is a horizontal direction and intersects with the first direction; wherein, the material dividing unit includes a stripping portion 133 and a blowing hole 134, the stripping portion 133 is used to divide the edge of the sheet material 200, and the stripping portion 133 is arranged on one of the end plate 1311 and the side plate 1312 facing the surface of the sheet material 200; the blowing hole 134 is used to blow air between adjacent sheet materials 200, and the blowing hole 134 is arranged on the other of the end plate 1311 and the side plate 1312 facing the surface of the sheet material 200.

[0080] One of the first support member 131 and the second support member 132 has an end plate 1311 and a side plate 1312, or both the first support member 131 and the second support member 132 have an end plate 1311 and a side plate 1312, and the end plate 1311 is located at one end of the sheet material 200 in the first direction, that is, Figure 2 The side plate 1312 is located at one end of the sheet material 200 along the second direction, that is, Figure 2 At one end of the Y direction, the second direction is a horizontal direction and intersects with the first direction. It should be noted that the angle between the second direction and the first direction can be a right angle, an acute angle, etc.

[0081] For example, the first support member 131 has an end plate 1311 and a side plate 1312, and the second support member 132 also has an end plate 1311 and a side plate 1312. The end plate 1311 of the first support member 131 and the end plate 1311 of the second support member 132 are respectively located at two ends of the sheet material 200 in the first direction; the side plate 1312 of the first support member 131 and the side plate 1312 of the second support member 132 are located at one end of the sheet material 200 in the second direction, and the two can be located on the same side of the sheet material 200, or on both sides of the sheet material 200 in the second direction.

[0082] Among them, a stripping portion 133 is set on the surface of one of the end plate 1311 and the side plate 1312 facing the sheet material 200, and the stripping portion 133 is used to swipe the edge of the sheet material 200 for frictional separation. A blowing hole 134 is set on the surface of the other of the end plate 1311 and the side plate 1312 facing the sheet material 200, and air is blown between adjacent sheet materials 200 through the blowing holes 134, and the gas flow is used to generate a force to separate two adjacent sheet materials 200.

[0083] For example, the first support member 131 has an end plate 1311 and a side plate 1312, and the second support member 132 also has an end plate 1311 and a side plate 1312. The end plate 1311 of the first support member 131 and the end plate 1311 of the second support member 132 are both provided with a stripping portion 133, and the side plate 1312 of the first support member 131 and the side plate 1312 of the second support member 132 are both provided with an air hole 134, and an air pipe joint 1213 connected to the air hole 134.

[0084] An end plate 1311 and a side plate 1312 are provided through at least one of the first support member 131 and the second support member 132, and a stripping portion 133 or an air blowing hole 134 can be selectively arranged on the end plate 1311 and the side plate 1312, so as to utilize the friction of the stripping portion 133 and the gas flow of the air blowing hole 134 to achieve separation of the sheet material 200 in different directions.

[0085] According to some embodiments of the present application, Figure 2 As shown, the side plate 1312 includes a first side plate 1313 and a second side plate 1314, the first side plate 1313 is located at one end of the end plate 1311 along the second direction; the second side plate 1314 is arranged opposite to the first side plate 1313 and is located at the other end of the end plate 1311 along the second direction; the blowing holes 134 are arranged on two opposite surfaces of the first side plate 1313 and the second side plate 1314.

[0086] The first side plate 1313 and the second side plate 1314 are arranged opposite to each other and are respectively located at the two ends of the end plate 1311 along the second direction, and the first side plate 1313 and the second side plate 1314 have blowing holes 134 arranged opposite to each other, and the blowing holes 134 of the first side plate 1313 and the blowing holes 134 of the second side plate 1314 blow air toward each other along the second direction.

[0087] For example, the first support member 131 and the second support member 132 both have an end plate 1311 and a side plate 1312, and the side plate 1312 includes a first side plate 1313 and a second side plate 1314 that are relatively arranged, the end plate 1311 of the first support member 131 and the end plate 1311 of the second support member 132 are arranged relatively to each other along a first direction, the first side plate 1313 and the second side plate 1314 of the first support member 131 are arranged relatively to each other along a second direction, and the first side plate 1313 and the second side plate 1314 of the second support member 132 are also arranged relatively to each other along the second direction.

[0088] By arranging the first side plate 1313 and the second side plate 1314 relatively along the second direction and arranging the blowing holes 134 on the first side plate 1313 and the second side plate 1314 facing each other, the blowing holes 134 of the first side plate 1313 and the second side plate 1314 blow air toward adjacent sheet materials 200 together, which helps to separate adjacent sheet materials 200 and improves the success rate of separating the sheet materials 200.

[0089] According to some embodiments of the present application, Figure 2 , Figure 7 and Figure 8 As shown, Figure 7 This is a schematic diagram of the scraper structure of some embodiments of the present application; Figure 8 The material separation unit further comprises a scraper 135 , which is located downstream of the stripping portion 133 along the moving direction of the sheet material 200 after being sucked, and is used to separate the multiple sheet materials 200 passing through the stripping portion 133 .

[0090] When the sheet material 200 is sucked and moved, the sheet material 200 bends, and the edge of the sheet material 200 contacts the scraper 135, which is used to separate the multiple sheet materials 200 passing through the stripping portion 133. The scraper 135 can be installed on the end plate 1311 or the side plate 1312 of the first support member 131, the scraper 135 can also be installed on the end plate 1311 or the side plate 1312 of the second support member 132, or the first support member 131 and the second support member 132 are both equipped with the scraper 135.

[0091] By disposing the scraper 135 downstream of the stripping portion 133 , in the event that the stripping portion 133 fails to separate adjacent sheet materials 200 , a safeguard is provided, thereby increasing the success rate of separating the sheet materials 200 .

[0092] According to some embodiments of the present application, Figure 2 , Figure 7 and Figure 8 As shown, the scraper 135 includes a first scraper 1351 and a second scraper 1352 which are arranged relatively spaced apart along a first direction, the first scraper 1351 is connected to the first support member 131, and the second scraper 1352 is connected to the second support member 132; wherein, the first scraper 1351 includes a first contact surface 1353 for contacting the sheet material 200, and the second scraper 1352 includes a second contact surface 1354 for contacting the sheet material 200, the first contact surface 1353 and the second contact surface 1354 are arranged relatively to each other, and along the moving direction of the sheet material 200 after being sucked, the distance between the first contact surface 1353 and the second contact surface 1354 along the first direction gradually decreases.

[0093] The scraper 135 includes a first scraper 1351 and a second scraper 1352. The first scraper 1351 is connected to the first support member 131 and has a first contact surface 1353. The second scraper 1352 is connected to the second support member 132 and has a second contact surface 1354. When the sheet material 200 is sucked and moved, the sheet material 200 will bend, and the edges of the sheet material 200 can contact the first contact surface 1353 and the second contact surface 1354 respectively.

[0094] At the same time, the installation structure design of the first scraper 1351 and the second scraper 1352 makes the distance between the first contact surface 1353 and the second contact surface 1354 along the first direction gradually decrease during the process of the sheet material 200 being sucked and moved. It can be understood that the sheet material 200 first contacts the lower edges of the first scraper 1351 and the second scraper 1352 during the process of being sucked and moved, and the distance between the first contact surface 1353 and the second contact surface 1354 along the first direction is d. As the sheet material 200 is lifted, the distance d between the first contact surface 1353 and the second contact surface 1354 along the first direction gradually decreases, the bending degree of the sheet material 200 increases, the contact area between the edge of the sheet material 200 and the first contact surface 1353 and the second contact surface 1354 increases, and the friction between the first contact surface 1353 and the second contact surface 1354 and the sheet material 200 increases, thereby separating the excess sheet material 200.

[0095] By respectively providing the first scraper 1351 and the second scraper 1352, when the sheet material 200 is sucked and lifted, the contact area between the sheet material 200 and the first scraper 1351 and the second scraper 1352 gradually increases, so that the friction between the sheet material 200 and the first scraper 1351 and the second scraper 1352 also gradually increases, and the blocking force of the first scraper 1351 and the second scraper 1352 on the sheet material 200 also gradually increases. If the blocking force of the first scraper 1351 and the second scraper 1352 is greater than the adhesion force of adjacent sheet materials 200, adjacent sheet materials 200 are separated, and the success rate of separating the sheet materials 200 is further improved.

[0096] According to some embodiments of the present application, Figure 1 As shown, the material taking unit 121 further includes a suction cup 1211 and a vibrator 1212 . The suction cup 1211 is used to suck the sheet material 200 on the supporting bottom plate 111 , and the vibrator 1212 is used to make the suction cup 1211 vibrate.

[0097] The material picking assembly 120 includes a material picking unit 121 and a fixed plate 122. The fixed plate 122 can be used to install and fix the material picking unit 121. The material picking unit 121 includes a suction cup 1211 and a vibrator 1212. The suction cup 1211 and the vibrator 1212 are both connected to the fixed plate 122. The vibrator 1212 is a device that can generate vibrations. After the suction cup 1211 absorbs the sheet material 200, the vibrator 1212 generates vibrations, thereby driving the suction cup 1211 to vibrate.

[0098] By adding a vibrator 1212 to the suction cup 1211 and utilizing the vibrator 1212 to generate vibration, adjacent sheet materials 200 are separated.

[0099] According to some embodiments of the present application, Figure 1 and Fig. 9 As shown, Fig. 9 The lifting assembly structure diagram of some embodiments of the present application is shown in FIG. 1 . The material taking device 100 further includes a lifting assembly 140 , which is used to adjust the height of the supporting bottom plate 111 .

[0100] The lifting assembly 140 is a device for lifting the bearing bottom plate 111. Any device that can achieve the lifting function meets the requirements. For example, the lifting assembly 140 includes a servo motor 141 and a screw module 142. The screw module 142 is connected to the bearing bottom plate 111. The servo motor 141 and the screw module 142 cooperate to adjust the height of the bearing bottom plate 111. For example, the lifting assembly 140 also includes a top plate 143. The top plate 143 is connected to the screw module 142. The top plate 143 contacts the bearing bottom plate 111 to adjust the height of the bearing bottom plate 111.

[0101] By setting the lifting assembly 140 to adjust the height of the supporting bottom plate 111 , the height of the stacked sheet materials 200 can be adjusted, thereby improving the flexibility of the device and facilitating the material taking assembly 120 to absorb the sheet materials 200 .

[0102] According to some embodiments of the present application, Figure 1 and Fig.10 As shown, Fig.10 The schematic diagram of the structure of fixing the first sensor in some embodiments of the present application. The material picking device 100 further includes a first sensor 150 and a controller, wherein the first sensor 150 is used to obtain height information of the sheet material 200 stacked on the supporting bottom plate 111; the controller is respectively connected to the first sensor 150 and the lifting assembly 140 by signal, and the controller is used to control the movement of the lifting assembly 140 according to the height information to adjust the height of the supporting bottom plate 111.

[0103] The first sensor 150 is used to detect the height information of the sheet material 200 on the supporting base plate 111. The first sensor 150 can be a diffuse reflection sensor, and its working principle is based on the principle of light reflection. When a beam of light is irradiated onto the surface of an object, the light will be reflected by the surface of the object to form reflected light. The diffuse reflection sensor uses the intensity of the reflected light to detect the position and characteristics of the object.

[0104] The first sensor 150 can be installed on a fixed bracket 170, and the fixed bracket 170 is installed on a supporting base 180. The supporting base 180 can be connected to the silo base 112. A slide groove 171 is set on the fixed bracket 170, and the first sensor 150 can adjust the height that the first sensor 150 needs to detect along the slide groove 171.

[0105] The picking component 120 sequentially absorbs the sheet materials 200 stacked on the supporting base plate 111. The height of the sheet materials 200 on the supporting base plate 111 will decrease. In order to ensure that the picking component 120 can absorb the sheet materials 200, the picking component 120 needs to continuously move downward as the height of the sheet materials 200 decreases, thereby increasing the picking time of the picking component 120.

[0106] After obtaining the height information of the sheet material 200 stacked on the supporting bottom plate 111, the first sensor 150 transmits the height information to the controller in real time, and the controller controls the movement of the lifting assembly 140 according to the height information to adjust the height of the supporting bottom plate 111. Therefore, the material taking assembly 120 does not need to move downward as the height of the sheet material 200 decreases.

[0107] For example, after the sheet material 200 is stacked on the supporting base plate 111, the height of the top layer of the sheet material 200 is 100 cm. After the top layer of the sheet material 200 is sucked, the height of the top layer of the sheet material 200 drops to 99 cm. At this moment, the first sensor 150 transmits the height information to the controller, and the controller controls the lifting assembly 140 to lift the supporting base plate 111 upward by 1 cm, so that the height of the top layer of the sheet material 200 stacked on the supporting base plate 111 is maintained at 100 cm.

[0108] By setting the first sensor 150 and the controller, the height of the supporting base plate 111 is adjusted in real time by the controller to ensure that the movement stroke of the material picking assembly 120 remains unchanged, thereby improving the efficiency of sucking and transferring the sheet material 200, thereby improving the efficiency of the battery assembly process.

[0109] According to some embodiments of the present application, Figure 1 and Fig.11 As shown, Fig.11 The second sensor is a schematic diagram of a structure for fixing some embodiments of the present application. The material taking device 100 further includes a second sensor 160 , which is used to detect the thickness of the sheet material 200 sucked by the material taking unit 121 after being separated by the material dividing assembly 130 .

[0110] The second sensor 160 is used to detect the thickness of the sheet material 200 sucked by the material taking unit 121 after separation by the material dividing assembly 130. The second sensor 160 may be a thickness sensor, which may be a contact sensor or a non-contact sensor.

[0111] The second sensor 160 can be installed on a fixed bracket 170, and the fixed bracket 170 is installed on a supporting base 180. The supporting base 180 can be connected to the silo base 112. A slide groove 171 is set on the fixed bracket 170. The second sensor 160 can adjust the height of the second sensor 160 along the slide groove 171. After the sheet material 200 sucked by the material picking unit 121 leaves the silo 110, the sheet material 200 will be transferred to the second sensor 160 through the driving unit. The second sensor 160 is used to detect the thickness of the sheet material 200. The thickness is used to determine whether the material picking unit 121 has sucked multiple sheets of sheet material 200, and a prompt can be issued through an alarm according to the detection result.

[0112] By providing the second sensor 160, the thickness of the sheet material 200 sucked and transferred is detected by the second sensor 160, so as to detect whether multiple sheets are sucked, thereby improving the coating quality of the electrode assembly.

[0113] An embodiment of the present application provides a battery production device, which includes the material taking device 100 in the above embodiment, and the sheet material 200 sucked by the material taking device 100 is a bottom support sheet covering the electrode assembly and / or an insulating film covering the electrode assembly.

[0114] According to some embodiments of the present application, the material picking device 100 includes a material bin 110 , a material picking assembly 120 , a material dividing assembly 130 , a lifting assembly 140 , a first sensor 150 and a second sensor 160 .

[0115] The silo 110 includes a bearing bottom plate 111 and a silo base 112 . The silo base 112 supports the bearing bottom plate 111 . The bearing bottom plate 111 is used for stacking sheet materials 200 .

[0116] The material picking assembly 120 includes a material picking unit 121 and a fixing plate 122 . The material picking unit 121 includes a suction cup 1211 fixed on the fixing plate 122 , and a vibrator 1212 for vibrating the suction cup 1211 .

[0117] The material separation assembly 130 includes a first support member 131 and a second support member 132. The first support member 131 includes an end plate 1311 and a side plate 1312. The second support member 132 also includes an end plate 1311 and a side plate 1312. The end plate 1311 of the first support member 131 and the end plate 1311 of the second support member 132 are arranged opposite to each other along the first direction, and a stripping portion 133 is provided on the surface of the side facing the sheet material 200. The stripping portion 133 has a plurality of sawtooth grooves arranged along the vertical direction, and the sawtooth grooves are used to strip the edge of the sheet material 200. The side plate 1312 includes a first side plate 1313 and a second side plate 1314. The first side plate 1313 and the second side plate 1314 are arranged opposite to each other along the second direction, and a blowing hole 134 is provided on the side facing the sheet material 200, which is used to assist in separating adjacent sheet materials 200 by blowing air in opposite directions. At least part of the blowing holes 134 are located below the lower edge of the stripping portion 133 .

[0118] The lifting assembly 140 includes a servo motor 141 , a screw module 142 and a top plate 143 . The top plate 143 is connected to the screw module 142 . The top plate 143 contacts the supporting bottom plate 111 to adjust the height of the supporting bottom plate 111 .

[0119] The first sensor 150 is connected to the silo base 112 via a fixed bracket 170 . The first sensor 150 is a diffuse reflection sensor for detecting height information of the sheet material 200 on the supporting base plate 111 . The controller is used to control the movement of the lifting assembly 140 to adjust the height of the supporting base plate 111 according to the height information.

[0120] The second sensor 160 is connected to the silo base 112 via a fixed bracket 170 and is used to detect the thickness of the sheet material 200 sucked by the material taking unit 121 after separation by the material dividing assembly 130 and to issue a reminder via an alarm.

[0121] 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 replace some or all of the technical features therein by equivalents; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate 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 taking device, characterized in that: include: A material bin, comprising a bearing bottom plate, wherein the bearing bottom plate is used for stacking sheet materials; The material taking component comprises a material taking unit and a driving unit, wherein the material taking unit is used to suck the sheet material in the material bin; and the driving unit is used to drive the material taking unit to move; The material separation component is used to separate the sheet materials sucked by the material taking component so that the material taking component can transfer the sheet materials one by one.

2. The material taking device according to claim 1, characterized in that: The material distribution component comprises: Supports, and At least one material separation unit is located on the support member, and the material separation unit is arranged on the moving path of the sheet material after being sucked by the material taking component, so as to separate a plurality of sheet materials that are adhered to each other.

3. The material taking device according to claim 2, characterized in that: The support member includes a first support member and a second support member extending in a vertical direction, the first support member and the second support member are respectively located at two ends of the sheet material along a first horizontal direction, and the material dividing unit is located on a side surface of the first support member facing the sheet material and / or a side surface of the second support member facing the sheet material.

4. The material taking device according to claim 3, characterized in that: The material distribution unit comprises: The stripping part has a plurality of sawtooth grooves arranged along the vertical direction, and the stripping part is used to strip the edge of the sheet material when the sheet material passes through.

5. The material taking device according to claim 3, characterized in that: The distributing unit further comprises: The blowing holes are opened toward the sheet materials so as to blow air toward adjacent sheet materials.

6. The material taking device according to claim 5, characterized in that: There are multiple blowing holes and they are spaced apart in the vertical direction. The material dividing unit also includes a stripping part for stripping the edge of the sheet material. Along the moving direction of the sheet material after being sucked, at least one blowing hole is located upstream of the stripping part.

7. The material taking device according to claim 3, characterized in that: At least one of the first support member and the second support member comprises: an end plate located at one end of the sheet material along the first direction; and A side plate connected to the end plate and located at one end of the sheet material along a second direction, wherein the second direction is a horizontal direction and intersects the first direction; Wherein, the material distribution unit comprises: A stripping portion, used for stripping the edge of the sheet material, the stripping portion being arranged on a surface of one of the end plate and the side plate facing the sheet material; The blowing holes are used for blowing air between the adjacent sheet materials, and the blowing holes are arranged on the surface of the other one of the end plate and the side plate facing the sheet material.

8. The material taking device according to claim 7, characterized in that: The side panel comprises: A first side plate, located at one end of the end plate along the second direction; A second side plate, arranged opposite to the first side plate and located at the other end of the end plate along the second direction; The blowing holes are arranged on two opposite surfaces of the first side plate and the second side plate.

9. The material taking device according to claim 4, characterized in that: The material separation unit further comprises a scraper, which is located downstream of the stripping portion along the moving direction of the sheet material after being sucked, and is used to separate a plurality of sheet materials passing through the stripping portion.

10. The material taking device according to claim 9, characterized in that: The scraper blade comprises a first scraper blade and a second scraper blade which are arranged relatively spaced apart along the first direction, the first scraper blade is connected to the first support member, and the second scraper blade is connected to the second support member; The first scraper blade includes a first contact surface for contacting the sheet material, the second scraper blade includes a second contact surface for contacting the sheet material, the first contact surface is arranged opposite to the second contact surface, and along the movement direction of the sheet material after being sucked, the distance between the first contact surface and the second contact surface along the first direction gradually decreases.

11. The material taking device according to claim 1, characterized in that: The material taking unit comprises: A suction cup for sucking the sheet material on the supporting bottom plate, and A vibrator is used to make the suction cup vibrate.

12. The material taking device according to claim 1, characterized in that: The material taking device also includes a lifting component, and the lifting component is used to adjust the height of the bearing bottom plate.

13. The material taking device according to claim 12, characterized in that: The material taking device also includes: A first sensor is used to obtain height information of the sheet materials stacked on the carrying bottom plate; and A controller is respectively connected to the first sensor and the lifting assembly by signals, and the controller is used to control the movement of the lifting assembly according to the height information to adjust the height of the bearing base plate.

14. The material taking device according to claim 1, characterized in that: The material taking device further comprises a second sensor, and the second sensor is used to detect the thickness of the sheet material sucked by the material taking unit after being separated by the material dividing assembly.

15. A battery production device, characterized in that: include: The material taking device according to any one of claims 1 to 14, wherein the sheet material sucked up by the material taking device is a bottom support sheet covering the electrode assembly and / or an insulating film covering the electrode assembly.

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