Material taking device and battery production system

Abstract

The utility model provides a material taking device and a battery production system, and belongs to the technical field of batteries. The material taking device comprises a flaky material placing part, a material taking assembly and a positioning piece. The sheet material placing part is used for bearing sheet materials stacked in the first direction. And the material taking assembly comprises a material taking unit and a driving unit, the material taking unit is used for obtaining the flaky materials on the flaky material placing part, and the driving unit is used for driving the material taking unit to move. The positioning piece is connected to the flaky material placing part, and the positioning piece is arranged in the first direction and used for penetrating through a positioning hole of a flaky material located on the flaky material placing part. Wherein the positioning piece is internally provided with an air channel, the positioning piece is provided with a first air blowing hole, the first air blowing hole is communicated with the air channel, and the first air blowing hole is used for blowing air between the adjacent sheet-shaped materials. Therefore, a plurality of mutually adhered sheet materials are separated to a certain extent through blowing, the material taking requirement of only taking a single sheet material is met, and the material taking quality and the overall production efficiency are improved.

Description

Technical Field

[0001] The present application relates to the technical field of batteries, and particularly to a material taking device and a battery production system. Background Art

[0002] Energy conservation and emission reduction are the keys to the sustainable development of society. Rechargeable batteries have the characteristics of storing energy or releasing energy according to needs, and are thus widely used in various electrical devices or energy storage systems, and are an important part of promoting energy transformation and sustainable development. For the new energy industry, battery technology is also an important factor related to its development.

[0003] During the production process of batteries, sheet materials are required, for example, the sheet material can be a Mylar film, and the Mylar film can be used to coat the electrode assembly. When taking the sheet material, it is easy to pick up multiple sheet materials in one material taking operation, resulting in a low material taking quality of the sheet material, which not only makes it difficult to meet the requirements of material taking, but also affects the material taking efficiency, and further affects the overall production efficiency. Summary of the Utility Model

[0004] The present application aims to at least solve one of the technical problems existing in the background art. To this end, an object of the present application is to provide a material taking device and a battery production system to improve the material taking quality of sheet materials.

[0005] An embodiment of the first aspect of the present application provides a material taking device, including: a sheet material placement part, a material taking assembly, and a positioning member. The sheet material placement part is used to carry sheet materials stacked in a first direction. The material taking assembly includes a material taking unit and a driving unit. The material taking unit is used to obtain the sheet materials on the sheet material placement part, and the driving unit is used to drive the material taking unit to move. The positioning member is connected to the sheet material placement part, the positioning member is arranged in the first direction, and is used to pass through the positioning holes of the sheet materials located on the sheet material placement part. Wherein, an air passage is provided in the positioning member, and the positioning member has a first air blowing hole, and the first air blowing hole is communicated with the air passage, and the first air blowing hole is used to blow air between adjacent sheet materials.

[0006] In the technical solution of the embodiment of the present application, by providing the first air blowing hole on the positioning member, so that in addition to being able to meet the positioning requirements of the sheet materials, the positioning member can also separate multiple mutually adhered sheet materials to a certain extent by blowing air, so as to realize the material taking and transfer of a single sheet material, and can meet the material taking requirement of only taking a single sheet material, improving the material taking quality and the overall production efficiency.

[0007] In some embodiments, the positioning member has at least one air blowing hole group, and the air blowing hole group includes a plurality of first air blowing holes arranged at intervals in the first direction. Thus, multiple sheet materials can be separated simultaneously.

[0008] In some embodiments, the blowing hole groups are provided in a plurality, and the plurality of blowing hole groups are arranged around an axis of the positioning member parallel to the first direction, so that air can be blown between adjacent sheet materials from different directions.

[0009] In some embodiments, the material picking device further comprises a column and a material dividing assembly. The column is connected to the sheet material placement portion, and the material dividing assembly comprises a material dividing block movably arranged on the column along a first direction, and a second blowing hole is arranged on the material dividing block, and the second blowing hole is used to blow air between adjacent sheet materials. The movable material dividing block can correspond to the position of the sheet material to be picked up, so as to blow air to the sheet material more effectively.

[0010] In some embodiments, the material separation component further includes an adjustment block and bristles. The adjustment block is movably disposed on the column, one end of the bristles is connected to the adjustment block, and the other end of the bristles extends toward the position where the sheet material is placed, and the bristles are used to draw the edge of the sheet material when the sheet material passes by. The adjustment block is used to adjust the contact amount between the bristles and the sheet material. In this way, the sheet material can be effectively separated while reducing the damage to the sheet material by the bristles.

[0011] In some embodiments, the bristles include a first bristle portion and a second bristle portion arranged along a first direction, and along a direction away from the sheet material placement portion, the length of the first bristle portion extending toward the position where the sheet material is placed gradually increases, and the length of the second bristle portion extending toward the position where the sheet material is placed is equal. In this way, the sheet materials that are adhered to each other can be completely separated, and the damage to the sheet materials caused by the bristles can be reduced.

[0012] In some embodiments, a chamfered structure or a rounded structure is provided at one end of the column away from the sheet material placement portion, and the chamfered structure or the rounded structure is used to guide the sheet material to be stacked on the sheet material placement portion, so that the sheet material can be accurately stacked at a preset position on the sheet material placement portion.

[0013] In some embodiments, the material taking device further comprises an ion generator, which is used to ionize the gas input into the positioning member and / or the material dividing block to eliminate static electricity between adjacent sheet materials, thereby facilitating the separation of adjacent sheet materials.

[0014] In some embodiments, the material taking device further comprises an ion generator, which is used to ionize the gas input into the positioning member to eliminate static electricity between adjacent sheet materials, thereby facilitating the separation of adjacent sheet materials.

[0015] In some embodiments, the material taking unit includes multiple vacuum branches and multiple suction cup groups, the multiple vacuum branches are connected to the multiple suction cup groups in a one-to-one correspondence, and the multiple suction cup groups are used to obtain the sheet material on the sheet material placement part. Multiple vacuum branches are conducive to improving the reliability of overall material taking.

[0016] In some embodiments, at least one of the plurality of vacuum branches is further provided with a vacuum degree maintaining unit to maintain the vacuum degree of the entire system within a reliable range, thereby improving the reliability of the adsorption of sheet materials.

[0017] In some embodiments, the vacuum degree maintaining unit is configured as a vacuum logic valve, thereby suppressing the reduction of the vacuum degree within the entire system, enabling the suction cup groups corresponding to the remaining vacuum branches to normally adsorb sheet materials, and improving the overall reliability.

[0018] In some embodiments, at least one of the plurality of vacuum branches is further provided with a negative pressure gauge to monitor abnormal conditions during the breaking of the vacuum in the vacuum branch.

[0019] In some embodiments, the material taking unit further includes a fixing plate. A plurality of suction cup groups are arranged on the bottom surface of the fixing plate facing the sheet material, and at least one of the plurality of suction cup groups includes two suction cups, and the two suction cups are centrosymmetric with respect to the center of the bottom surface, improving the reliability of the adsorption of sheet materials.

[0020] In some embodiments, the adsorption surface of the suction cup group is flush with the bottom surface, so that the fixing plate can press the stuck sheet material down to the accurate material taking position again and keep it in a flat state, improving the reliability of material taking.

[0021] In some embodiments, the material taking unit further includes a buffer structure, and the buffer structure is arranged between the driving unit and the fixing plate, reducing the impact force of the suction cup group and the fixing plate on the sheet material, thereby reducing the damage to the sheet material.

[0022] In some embodiments, the buffer structure includes a guiding member and an elastic member. The guiding member is used to guide the fixing plate to move relative to the driving unit in a first direction, and the elastic member is used to absorb the impact force when the fixing plate moves towards the sheet material placement part, reducing the offset of the fixing plate while playing a buffering role and improving the reliability of material taking.

[0023] In some embodiments, the material taking unit further includes a sensor for determining whether an abnormality occurs in material taking. By setting the sensor to detect abnormal conditions in material taking, it is beneficial to further improve the reliability of material taking.

[0024] In some embodiments, the material taking unit further includes a gas source, and the gas source is respectively communicated with the plurality of vacuum branches, and the gas source is used to input compressed gas into the plurality of vacuum branches, thereby realizing unloading by breaking the vacuum.

[0025] In some embodiments, the material taking device further includes a jacking mechanism for jacking up the sheet material, so that the sheet material can be picked up at a fixed height position, improving the convenience and reliability of material taking.

[0026] In some embodiments, the fixing plate is configured as a polymer fixing plate, which has good strength and improves the reliability of the structure.

[0027] An embodiment of the second aspect of the present application provides a battery production system, which includes the material taking device in the above embodiments.

[0028] The above description is only an overview of the technical solution of the present application. In order to be able to understand the technical means of the present application more clearly, it can be implemented according to the content of the specification. And in order to make the above and other purposes, features and advantages of the present application more obvious and understandable, the specific embodiments of the present application are specifically given below. Description of the Drawings

[0029] In the drawings, unless otherwise specified, the same reference numerals throughout the several views denote the same or similar components or elements. These drawings are not necessarily drawn to scale. It should be understood that these drawings only depict some embodiments disclosed in accordance with the present application and should not be regarded as limiting the scope of the present application.

[0030] Figure 1 It is a schematic diagram of the overall structure of the material taking device in some embodiments of the present application;

[0031] Figure 2 It is one of the schematic diagrams of the partial structure of the material taking device in some embodiments of the present application;

[0032] Figure 3 It is the second of the schematic diagrams of the partial structure of the material taking device in some embodiments of the present application;

[0033] Figure 4 It is a schematic diagram of the structure of the positioning member in some embodiments of the present application;

[0034] Figure 5 It is a schematic diagram of the structure of the adjusting block and the bristles in some embodiments of the present application;

[0035] Figure 6 It is a schematic diagram of the structure of the blow air pipeline in some embodiments of the present application;

[0036] Figure 7 It is a schematic diagram of the structure of the vacuum material taking pipeline in some embodiments of the present application;

[0037] Figure 8 It is one of the schematic diagrams of the structure of the material taking unit in some embodiments of the present application;

[0038] Figure 9 It is the second of the schematic diagrams of the structure of the material taking unit in some embodiments of the present application;

[0039] Figure 10Schematic diagram of a partial structure of the material picking unit according to some embodiments of the present application.

[0040] Description of reference numerals:

[0041] 100, material picking device;

[0042] 10, sheet material placement part;

[0043] 20, material picking assembly; 21, material picking unit; 211, vacuum branch; 212, suction cup group; 212a, suction cup; 213, fixing plate; 213a, bottom surface; 213b, first avoidance hole; 214, buffer structure; 214a, guiding member; 214b, elastic member; 215, sensor; 216, gas source; 22, bracket;

[0044] 30, positioning member; 31, first air blowing hole; 32, positioning surface; 33, pipe joint;

[0045] 40, column;

[0046] 50, material distribution assembly;

[0047] 51, material distribution block; 511, second air blowing hole; 52, adjusting block; 521, arc-shaped groove; 53, brush; 531, first brush part; 532, second brush part;

[0048] 60, ion generator;

[0049] 200, sheet material;

[0050] F1, first direction; L, axis; K, air supply device; M, vacuum source; V, vacuum logic valve; P, negative pressure gauge. Detailed implementation manners

[0051] Hereinafter, embodiments of the technical solution of the present application will be described in detail with reference to the drawings. The following embodiments are only used to more clearly illustrate the technical solution of the present application, and thus are only examples and cannot be used to limit the protection scope of the present application.

[0052] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by those of ordinary skill 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" and any variations thereof in the specification and claims of this application and the above drawings are intended to cover non-exclusive inclusion.

[0053] In the description of the embodiments of the present application, technical terms such as "first" and "second" are only used to distinguish different objects, and cannot be construed as indicating or implying relative importance or implicitly specifying the quantity, specific order, or primary-secondary relationship of the indicated technical features. In the description of the embodiments of the present application, the meaning of "a plurality" is more than two, unless otherwise specifically defined.

[0054] Reference to "embodiments" in this text means that the specific features, structures, or characteristics described in connection with the embodiments can be included in at least one embodiment of the present application. The phrase appearing in various positions in the specification does not necessarily refer to the same embodiment, nor is it an independent or alternative embodiment mutually exclusive with other embodiments. Those skilled in the art will explicitly and implicitly understand that the embodiments described herein can be combined with other embodiments.

[0055] In the description of the embodiments of the present application, the term "and / or" is merely a description of the association relationship of associated objects, indicating that three relationships can exist. For example, A and / or B can represent: A exists alone, A and B exist simultaneously, and B exists alone. In addition, the character " / " in this text generally represents an "or" relationship between the associated objects before and after.

[0056] In the description of the embodiments of the present application, the term "a plurality" refers to more than two (including two). Similarly, "a plurality of groups" refers to more than two groups (including two groups), and "a plurality of pieces" refers to more than two pieces (including two pieces).

[0057] In the description of the embodiments of the present application, technical terms such as "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings. This is only for the convenience of describing the embodiments of the present application and simplifying the description, rather than indicating or implying that the indicated device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be construed as a limitation on the embodiments of the present application.

[0058] In the description of the embodiments of the present application, unless otherwise clearly specified and limited, technical terms such as "installation", "connection", "connection", "fixation", etc. should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or integrated; it can also be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside 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 specific circumstances.

[0059] At present, from the perspective of the development of the market situation, rechargeable batteries are more and more widely used. Rechargeable batteries are not only applied to energy storage power systems such as hydropower, thermal power, wind power, and solar power plants, but also widely used in various electronic devices, such as electric bicycles, electric motorcycles, electric vehicles and other electric transportation means, as well as multiple fields such as aerospace. With the continuous expansion of the application fields of rechargeable batteries, the market demand is also constantly increasing.

[0060] A battery cell refers to the smallest unit that makes up a battery. A battery cell may include a housing and an electrode assembly located inside the housing. The electrode assembly is the component in the battery cell where an electrochemical reaction occurs. The electrode assembly is mainly formed by winding or laminating a positive electrode sheet and a negative electrode sheet, and a separator is usually provided between the positive electrode sheet and the negative electrode sheet. The parts of the positive electrode sheet and the negative electrode sheet with active materials constitute the main body of the electrode assembly, and the parts of the positive electrode sheet and the negative electrode sheet without active materials respectively constitute the electrode tabs. The positive electrode tab and the negative electrode tab can be located at one end of the main body together or at both ends of the main body respectively. During the charge and discharge process of the battery, the positive electrode active material and the negative electrode active material react with the electrolyte, and the electrode tabs are connected to the electrode terminals to form a current loop.

[0061] The battery cell may also include a base sheet and a Mylar film. By thermally melting the base sheet and the Mylar film, and then coating the thermally melted base sheet and Mylar film on the outside of the electrode assembly, the housing encapsulates the electrode assembly coated with the base sheet and the Mylar film to form a battery cell. The Mylar film plays a role in sealing and protecting the electrode assembly, and the Mylar film can achieve insulation between the electrode assembly and the housing.

[0062] In some cases, taking the Mylar film as a sheet material as an example. When picking up the Mylar film, it is picked up from the top of a stack of multiple Mylar films. Since the weight and thickness of the Mylar film are both small, multiple stacked Mylar films may stick to each other under the action of factors such as static electricity, humid air or its own viscosity. Then, when picking up the Mylar film, it is easy to pick up multiple sheets together. If multiple picked-up Mylar films are thermally melted together, it will affect the coating quality of the electrode assembly. That is, the picking quality during the picking process is poor and cannot meet the requirement of only picking up a single Mylar film, so it is necessary to pick up materials again, reducing the picking efficiency and the overall production efficiency.

[0063] Based on the above considerations, the present application provides a material taking device and a battery production system. The material taking device includes a sheet material placement part, a material taking component, and a positioning member. The sheet material placement part is used to carry sheet materials stacked in a first direction. The material taking component includes a material taking unit and a driving unit. The material taking unit is used to obtain the sheet materials on the sheet material placement part, and the driving unit is used to drive the material taking unit to move. The positioning member is connected to the sheet material placement part, is arranged along the first direction, and is used to pass through the positioning holes of the sheet materials located on the sheet material placement part. Wherein, an air passage is provided in the positioning member, and the positioning member has a first air blowing hole which is communicated with the air passage, and the first air blowing hole is used to blow air between adjacent sheet materials.

[0064] By providing the first air blowing hole on the positioning member, the positioning member can not only meet the positioning requirements of the sheet materials, but also separate the multiple mutually adhered sheet materials to a certain extent by blowing air, so as to realize the taking and transfer of a single sheet material, meet the material taking requirement of only taking a single sheet material, and improve the material taking quality and the overall production efficiency.

[0065] The material taking device disclosed in the embodiments of the present application can be used, but is not limited to, taking materials of Mylar films and bottom support sheets in battery monomers, and can also be used for taking materials of other film layer materials. In this way, it is beneficial to improve the material taking quality of sheet materials.

[0066] Combined Figures 1 to 4 as shown Figure 1 is a schematic diagram of the overall structure of the material taking device according to some embodiments of the present application; Figure 2 is one of the schematic diagrams of the partial structure of the material taking device according to some embodiments of the present application; Figure 3 is the second of the schematic diagrams of the partial structure of the material taking device according to some embodiments of the present application; Figure 4 is a schematic diagram of the structure of the positioning member according to some embodiments of the present application.

[0067] The embodiments of the present application provide a material taking device 100, including a sheet material placement part 10, a material taking component 20, and a positioning member 30. The sheet material placement part 10 is used to carry sheet materials 200 stacked in a first direction F1. The material taking component 20 includes a material taking unit 21 and a driving unit. The material taking unit 21 is used to obtain the sheet materials 200 on the sheet material placement part 10, and the driving unit is used to drive the material taking unit 21 to move. The positioning member 30 is connected to the sheet material placement part 10, is arranged along the first direction F1, and is used to pass through the positioning holes of the sheet materials 200 located on the sheet material placement part 10. Wherein, an air passage is provided in the positioning member 30, and the positioning member 30 has a first air blowing hole 31 which is communicated with the air passage, and the first air blowing hole 31 is used to blow air between adjacent sheet materials 200.

[0068] The sheet material 200 can be a base sheet or an insulating film that wraps the electrode assembly. Among them, the insulating film can be a Mylar film.

[0069] The sheet material placement part 10 is a component for carrying and storing the sheet material 200. Along the first direction F1, a plurality of sheet materials 200 are stacked on the sheet material placement part 10. The first direction F1 can be the thickness direction of the sheet material 200. In some examples, the sheet material placement part 10 can be a bottom plate, and the shape of the orthographic projection of the sheet material 200 on the bottom plate can be square.

[0070] The material picking component 20 is a component for picking up the sheet material 200 and carrying and transferring the sheet material 200. In some embodiments, when picking up a stack of sheet materials 200 stacked on the bottom plate, the material picking unit 21 can pick up the materials starting from the top of the stack of sheet materials 200 facing away from the bottom plate, and then the driving unit drives the material picking unit 21 to move, so that the sheet material 200 picked up by the material picking unit 21 is separated from the remaining sheet materials on the bottom plate, to achieve the transfer of the sheet material 200, and cycle in this way, so as to achieve layer-by-layer picking of the sheet material 200.

[0071] In some embodiments, the material picking method of the material picking unit 21 can be negative pressure adsorption, and the driving unit can be configured as a robotic arm.

[0072] The positioning member 30 is a component for positioning the sheet material 200 on the sheet material placement part 10, so that the sheet material 200 can be accurately located at a preset position on the sheet material placement part 10, thus facilitating the material picking component 20 to pick up the materials.

[0073] The way of positioning by the positioning member 30 is that the sheet material 200 is provided with positioning holes. When stacking the sheet materials 200, the positioning holes are aligned with the positioning member 30, and the positioning member 30 passes through the positioning holes.

[0074] A plurality of positioning members 30 can be arranged at intervals, so as to reduce the movement of the sheet material 200 relative to the sheet material placement part 10 and improve the positioning accuracy. When the driving unit drives the material picking unit 21 to move to carry the sheet material 200 for transfer, the movement path of the sheet material 200 is to move relative to the positioning member 30 in a direction away from the sheet material placement part 10 until the positioning holes of the sheet material 200 completely leave the positioning member 30. In some examples, the positioning member 30 can be a positioning pin, and a chamfer is provided at one end of the positioning pin facing away from the sheet material placement part 10 to facilitate the positioning pin to pass through the positioning hole.

[0075] The positioning member 30 has an air passage inside, so the positioning member 30 can be a hollow structure. By inputting gas into the air passage, the gas is blown out through the first air blowing holes 31 and acts between adjacent sheet materials 200. Under the action of the flowing gas, a plurality of sheet materials 200 adhered to each other can be separated to a certain extent, so as to cooperate with the material taking assembly 20 to take and transfer a single sheet material 200, which can meet the material taking requirement of only taking a single sheet material 200, and improve the quality of material taking and the overall production efficiency.

[0076] At the same time, since the positioning holes on the sheet material 200 are located at the central part of the sheet material 200 relative to the edge of the sheet material 200, correspondingly, the gas blown out from the first air blowing holes 31 can act on the central part of the sheet material 200, that is, separate from the inside of the sheet material 200, which improves the reliability of separation between two adjacent sheet materials 200.

[0077] In some embodiments, the gas input into the air passage can be ionized to generate positive and negative ions, so as to facilitate the elimination of static electricity between adjacent sheet materials 200, and further facilitate the separation of adjacent sheet materials 200.

[0078] In some embodiments, the bottom of the positioning member 30 has a positioning surface 32 to facilitate locking the positioning member 30 to the sheet material placing portion 10. A pipe joint 33 is further provided at the bottom of the positioning member 30, and the air passage is communicated with the air supply pipeline through the pipe joint 33.

[0079] By providing the first air blowing holes 31 on the positioning member 30, the positioning member 30 can not only meet the positioning requirement of the sheet material 200, but also separate a plurality of sheet materials 200 adhered to each other to a certain extent by blowing air, so as to realize the taking and transfer of a single sheet material 200, which can meet the material taking requirement of only taking a single sheet material 200, and improve the quality of material taking and the overall production efficiency.

[0080] Combined Figures 2 to 4 As shown, according to some embodiments of the present application, the positioning member 30 has at least one air blowing hole group, and the air blowing hole group includes a plurality of first air blowing holes 31 arranged at intervals along the first direction F1.

[0081] The air blowing hole group is a combination of multiple first air blowing holes 31. The multiple first air blowing holes 31 are arranged along the first direction F1, that is, the arrangement direction of the multiple first air blowing holes 31 is the same as the stacking direction of the sheet materials 200. And the air blowing hole group can cover a certain length of the air blowing interval, so that the multiple first air blowing holes 31 can correspond to the sheet materials 200 stacked at different height positions, thereby blowing air on the sheet materials 200 at different height positions, which is beneficial to separating multiple sheet materials 200 at the same time, further reducing the number of sheet materials 200 stuck together, and thus realizing the picking and transferring of a single sheet material 200.

[0082] By arranging multiple first air blowing holes 31 along the first direction F1 to form an air blowing hole group, air can be blown on the sheet materials 200 stacked at different height positions, multiple sheet materials 200 can be separated at the same time, which is beneficial to realizing the picking and transferring of a single sheet material 200.

[0083] Combined Figures 2 to 4 As shown, according to some embodiments of the present application, multiple air blowing hole groups are provided, and the multiple air blowing hole groups are arranged around the positioning member 30 along the axis L parallel to the first direction F1.

[0084] If the multiple air blowing hole groups are arranged around the positioning member 30 along the axis L parallel to the first direction F1, the orientations of the air blowing hole groups at different positions are different, so that the air blowing directions of the air blowing hole groups at different positions are different, and thus air can be blown between adjacent sheet materials 200 from different directions at the positions of the positioning holes of the sheet materials 200, which is beneficial to realizing the full separation between adjacent sheet materials 200.

[0085] By arranging multiple air blowing hole groups, air can be blown between adjacent sheet materials 200 from different directions, which is beneficial to realizing the full separation between adjacent sheet materials 200.

[0086] Combined Figures 1 to 3 As shown, according to some embodiments of the present application, the picking device 100 further includes a column 40 and a material separating component 50. The column 40 is connected to the sheet material placing part 10, and the material separating component 50 includes a material separating block 51 movably arranged on the column 40 along the first direction F1. A second air blowing hole 511 is provided on the material separating block 51, and the second air blowing hole 511 is used for blowing air between adjacent sheet materials 200.

[0087] The column 40 is a component for supporting the material separating component 50. The material separating component 50 is a component for separating multiple sheet materials 200 when the picking component 20 picks up materials.

[0088] The column 40 can be arranged along the first direction F1. The column 40 is arranged at the placement position of the sheet material placing part 10 adjacent to the sheet material 200. Then the column 40 is close to the edge of the sheet material 200. Thus, the material dividing assembly 50 arranged on the column 40 is also close to the edge of the sheet material 200, so that the material dividing assembly 50 can act on the edge of the sheet material 200, thereby realizing the material division of multiple sheet materials 200. At the same time, since the column 40 is close to the edge of the sheet material 200, the column 40 can also position the edge of the sheet material 200 to cooperate with the positioning member 30 to jointly position the sheet material 200.

[0089] The moving path of the sheet material 200 is to move relative to the positioning member 30 along the direction away from the sheet material placing part 10, that is, to move along the extending directions of the positioning member 30 and the column 40. During the moving process, the height position of the picked-up sheet material 200 also changes accordingly. By the material dividing block 51 movably arranged on the column 40, the material dividing block 51 can move to different height positions and correspond to the sheet material 200, so that the gas blown out from the second air blowing hole can effectively act on the edge of the sheet material 200. With the cooperation of the first air blowing hole 31, the adjacent sheet materials 200 can be separated from the inside and the edge of the sheet material 200 at the same time, further improving the separation effect.

[0090] By arranging the movable material dividing block 51, the position of the second air blowing hole 511 on the material dividing block 51 can correspond to the position of the picked-up sheet material 200, so as to blow air on the sheet material 200 more effectively, further improving the separation effect.

[0091] Combined Figures 1 to 3 with Figure 5 shown, Figure 5 is a schematic structural diagram of the adjusting block and the bristles of some embodiments of the present application. According to some embodiments of the present application, the material dividing assembly 50 further includes an adjusting block 52 and bristles 53. The adjusting block 52 is movably arranged on the column 40. One end of the bristles 53 is connected to the adjusting block 52, and the other end of the bristles 53 extends towards the position where the sheet material 200 is placed. The bristles 53 are used to scrape the edge of the sheet material 200 when the sheet material 200 passes by. Among them, the adjusting block 52 is used to adjust the contact amount between the bristles 53 and the sheet material 200.

[0092] The way the bristles 53 achieve the separation of the sheet materials 200 is that the material taking component 20 carries the sheet materials 200 and moves relative to the column 40. When moving to the bristles 53, the bristles 53 contact the edge of the sheet materials 200, and the bristles 53 undergo adaptive deformation, enabling the bristles 53 to separate multiple sheet materials 200 in a passive scraping manner. At the same time, the texture of the bristles 53 is relatively soft, which can minimize the damage to the sheet materials 200 when scraping the edges of the sheet materials 200. In some examples, the bristles 53 can be nylon bristles.

[0093] During the process of the bristles 53 scraping the edge of the sheet materials 200, the greater the contact amount between the bristles 53 and the sheet materials 200, the greater the deformation amount of the adaptive deformation of the bristles 53. Correspondingly, the force applied by the bristles 53 to the sheet materials 200 is also greater. Appropriately increasing this force is beneficial to improving the separation effect of the sheet materials 200.

[0094] Therefore, by the movable connection between the adjusting block 52 and the column 40, moving the adjusting block 52 towards the sheet materials 200 can increase the contact amount between the bristles 53 and the sheet materials 200, and moving the adjusting block 52 away from the sheet materials 200 can reduce the contact amount between the bristles 53 and the sheet materials 200. Thus, the force applied by the bristles 53 to the sheet materials 200 can be adjusted to an appropriate range, and further, while achieving effective separation, the damage to the sheet materials 200 caused by the bristles 53 can be reduced.

[0095] In some embodiments, the adjusting block 52 is provided with a strip-shaped groove or an arc-shaped groove 521. The fastener passes through the strip-shaped groove or the arc-shaped groove 521 and is connected to the column 40. The movable connection between the adjusting block 52 and the column 40 is realized by using the strip-shaped groove or the arc-shaped groove 521, thereby realizing the adjustment of the contact amount between the bristles 53 and the sheet materials 200.

[0096] By setting the adjusting block 52 to adjust the contact amount between the bristles 53 and the sheet materials 200, while effectively separating the sheet materials 200, the damage to the sheet materials 200 caused by the bristles 53 can also be reduced.

[0097] As Figure 5 shown, according to some embodiments of the present application, the bristles 53 include a first bristle portion 531 and a second bristle portion 532 arranged along the first direction F1. Along the direction away from the sheet material placement portion, the length of the first bristle portion 531 extending towards the position where the sheet materials 200 are placed gradually increases, and the lengths of the second bristle portion 532 extending towards the position where the sheet materials 200 are placed are equal.

[0098] The first bristle portion 531 and the second bristle portion 532 are arranged along the first direction F1, so the first bristle portion 531 and the second bristle portion 532 can jointly form a separation interval with a certain length.

[0099] During the process of the picking component 20 picking up the sheet material 200 and moving away from the sheet material placement part 10, the sheet material 200 first contacts the first brush part 531. Since the length of the first brush part 531 increases along the direction away from the sheet material placement part 10, the contact amount between the first brush part 531 and the sheet material 200 gradually increases. Correspondingly, the acting force of the first brush part 531 on the sheet material 200 also gradually increases, so that multiple sheet materials 200 can be fully separated within the separation interval. When the sheet material 200 moves to the second brush part 532, since the sheet materials 200 have been fully separated, at this time, it is not necessary to continue to increase the acting force to completely separate the mutually adhered sheet materials 200. Thus, by setting the second brush part 532 with the same length, the mutually adhered sheet materials 200 can be completely separated, and at the same time, the damage to the sheet material 200 caused by excessive acting force can be reduced.

[0100] By reasonably setting the lengths of the brush hairs 53 at different positions, the mutually adhered sheet materials 200 can be completely separated, and the damage to the sheet material 200 caused by the brush hairs 53 can also be reduced.

[0101] Combined Figures 1 to 3 As shown, according to some embodiments of the present application, a chamfer structure or a fillet structure is provided at one end of the column 40 away from the sheet material placement part 10, and the chamfer structure or the fillet structure is used to guide the sheet material 200 to be stacked on the sheet material placement part 10.

[0102] The chamfer structure can be configured as an inclined surface at the end of the column 40, and the fillet structure can be configured as an arc surface at the end of the column 40. Both the inclined surface and the arc surface are located on one side of the column 40 facing the placement position on the sheet material placement part 10.

[0103] When the sheet material 200 is transferred onto the sheet material placement part 10, it needs to be placed from top to bottom along the first direction F1. The chamfer structure or the fillet structure can appropriately correct the deviation of the sheet material 200 to guide the sheet material 200 to be accurately stacked at the preset position on the sheet material placement part 10.

[0104] By providing a chamfer structure or a fillet structure on the column, the sheet material can be guided to be accurately stacked at the preset position on the sheet material placement part.

[0105] As Figure 6 shown, Figure 6 As shown in the structural schematic diagram of the blow air pipeline according to some embodiments of the present application. According to some embodiments of the present application, the picking device 100 further includes an ion generator 60, and the ion generator 60 is used to ionize the gas input to the positioning member 30 and / or the material dividing block 51.

[0106] The ionization principle of the ion generator 60 is that when a high voltage is applied to the electrode, a strong electric field will be formed around the electrode. Under the action of the strong electric field, the outer electrons of the gas molecules close to the electrode will be forcibly stripped, making the gas molecules become ions. Among them, the ion generator 60 can include a negative ion generator and / or a positive ion generator. The negative ion generator is used to generate negative ions, and the positive ion generator is used to generate positive ions. The negative ions or positive ions are beneficial to eliminating the static electricity between adjacent sheet materials 200, thereby facilitating the separation of adjacent sheet materials 200.

[0107] The ion generator 60 is used to ionize the gas input to the positioning member 30 and / or the material distribution block 51. It can be understood that the gas input to the positioning member 30 contains ions, or the gas input to the material distribution block 51 contains ions, or the gas input to both the positioning member 30 and the material distribution block 51 contains ions.

[0108] In some embodiments, the gas supply device K is respectively connected to each positioning member 30 and each material distribution block 51 through the main pipeline. An ion generator 60 is arranged on the main pipeline so that the gas can be ionized during the process of passing through the main pipeline, thereby transporting the ion-containing gas to the positioning member 30 and the material distribution block 51.

[0109] By arranging the ion generator 60 to ionize the gas input to the positioning member 30 and the material distribution block 51, the static electricity between adjacent sheet materials 200 is eliminated, thereby facilitating the separation of adjacent sheet materials 200.

[0110] According to some embodiments of the present application, the material taking device 100 further includes an ion generator 60, and the ion generator 60 is used to ionize the gas input to the positioning member 30.

[0111] In this embodiment, the ion generator is shared by the positioning member 30 and the material distribution block 51, or, on the basis of the ion generator connected to the material distribution block 51, an additional ion generator is arranged to be connected to the positioning member 30, and the two ion generators respectively ionize the gas input to the material distribution block 51 and the positioning member 30.

[0112] By arranging the ion generator 60 to ionize the gas input to the positioning member 30, the static electricity between adjacent sheet materials 200 is eliminated, thereby facilitating the separation of adjacent sheet materials 200.

[0113] As Figure 7 shown, Figure 7 is a schematic structural diagram of the vacuum material taking pipeline of some embodiments of the present application. According to some embodiments of the present application, the material taking unit 21 includes a plurality of vacuum branches 211 and a plurality of suction cup groups 212. The plurality of vacuum branches 211 are in one-to-one correspondence and communication with the plurality of suction cup groups 212, and the plurality of suction cup groups 212 are used to obtain the sheet materials 200 on the sheet material placement part 10.

[0114] In some embodiments, the vacuum source M is connected through a main pipeline and a plurality of vacuum branch pipelines 211. By providing the plurality of vacuum branch pipelines 211, the impact on the overall adsorption and material taking caused by an abnormality in a certain part of the vacuum branch pipelines 211 is reduced, which is beneficial to improving the reliability of the overall material taking.

[0115] By providing the plurality of vacuum branch pipelines 211, it is beneficial to improve the reliability of the overall material taking.

[0116] As Figure 7 shown, according to some embodiments of the present application, at least one of the plurality of vacuum branch pipelines 211 is further provided with a vacuum degree maintaining unit.

[0117] The vacuum degree maintaining unit is a component for maintaining the vacuum degree in the entire vacuum pipeline. For example, when there is a situation of air leakage or incomplete adsorption in the corresponding suction cup group 212 on a certain vacuum branch pipeline 211, the vacuum degree of this vacuum branch pipeline 211 will decrease, which will cause the vacuum degree of the entire vacuum pipeline to decrease. By appropriately blocking or throttling this vacuum branch pipeline 211 through the vacuum degree maintaining unit, the impact on the vacuum degree of the entire system caused by the abnormal vacuum branch pipeline 211 can be reduced, so that the suction cup groups 212 corresponding to the remaining vacuum branch pipelines 211 can stably adsorb the sheet material 200, improving the reliability of material taking. A vacuum degree maintaining unit can be provided on each vacuum branch pipeline 211, so that the vacuum degree of the entire system can be effectively maintained in the event of an abnormality in any one of the vacuum branch pipelines 211.

[0118] In some embodiments, the vacuum degree maintaining unit can be configured as a vacuum logic valve V.

[0119] By providing the vacuum degree maintaining unit, the vacuum degree of the entire system is maintained within a reliable range, thereby improving the reliability of the adsorption of the sheet material 200.

[0120] As Figure 7 shown, according to some embodiments of the present application, the vacuum degree maintaining unit is configured as a vacuum logic valve V.

[0121] The structure of the vacuum logic valve V includes a valve body and a valve plate. There is a valve cavity inside the valve body. The valve body is provided with a first through hole and a second through hole arranged oppositely and connected to the valve cavity. The valve plate is in the valve cavity and is provided with a throttling hole and a flow hole. The aperture of the throttling hole is smaller than that of the flow hole, and the throttling hole is always in communication with the first through hole and the second through hole.

[0122] The corresponding working principle is as follows. When multiple suction cup groups 212 work together and there is an individual suction cup group 212 that fails to adsorb the workpiece, the air flow state at the corresponding vacuum logic valve V of the suction cup group 212 that fails to adsorb the workpiece changes. The valve plate undergoes elastic deformation under the action of the air flow, causing part of the valve plate to approach and block the first through hole, disconnecting the communication between the flow hole and the first through hole. The air flow can only flow through the throttle hole, thereby reducing the vacuum leakage at the suction cup group 212 that fails to adsorb the workpiece, maintaining the vacuum degree of the entire system, and ensuring that other suction cup groups 212 can normally adsorb the workpiece. When the suction cup group 212 normally adsorbs the workpiece, the air flow rate decreases, and the valve plate restores its deformation to open the first through hole, thereby allowing the air flow to flow through the flow hole, enabling the workpiece to be stably adsorbed.

[0123] By configuring the vacuum degree maintaining unit as the vacuum logic valve V, the reduction of the vacuum degree within the entire system is suppressed, enabling the suction cup groups 212 corresponding to the remaining vacuum branches 211 to normally adsorb the sheet materials 200, thereby enhancing the overall reliability.

[0124] As Figure 7 shown, according to some embodiments of the present application, at least one of the multiple vacuum branches 211 is further provided with a negative pressure gauge P.

[0125] The negative pressure gauge P is a component for detecting the negative pressure value of the corresponding vacuum branch 211. During unloading, it is necessary to reduce the vacuum degree of the vacuum branch 211 to reduce the adsorption force of the suction cup group 212, that is, to achieve unloading by breaking the vacuum. The negative pressure value is detected by the negative pressure gauge P to detect whether there are faults or abnormalities during vacuum breaking, thereby enhancing the overall reliability. A negative pressure gauge P can be provided on each vacuum branch 211, so that any abnormality in vacuum breaking of any vacuum branch 211 can be detected in a timely manner.

[0126] By providing the negative pressure gauge P, the abnormal conditions during vacuum breaking of the vacuum branch 211 can be monitored.

[0127] Combined with Figures 8 to 9 shown, Figure 8 is one of the structural schematic diagrams of the material taking unit according to some embodiments of the present application; Figure 9 is the second structural schematic diagram of the material taking unit according to some embodiments of the present application. According to some embodiments of the present application, the material taking unit 21 further includes a fixing plate 213. Multiple suction cup groups 212 are arranged on the bottom surface 213a of the fixing plate 213 facing the sheet material 200, and at least one of the multiple suction cup groups 212 includes two suction cups 212a, and the two suction cups 212a are centrosymmetric with respect to the center of the bottom surface 213a.

[0128] The fixing plate 213 is a component for fixing the suction cup group 212. Combined with Figure 9As shown, the suction cups a1 and a2 are centrosymmetric, and the suction cups b1 and b2 are centrosymmetric. The suction cups a1 and a2 together form a suction cup group 212, and the suction cups b1 and b2 together form a suction cup group 212. Two centrosymmetric suction cup groups 212a share a vacuum branch 211. Since the vacuum degrees of the same vacuum branch 211 are the same, the adsorption forces corresponding to the two suction cup groups 212a are also the same, enabling the sheet material 200 to be subjected to a uniform adsorption force, thereby enhancing the reliability of adsorption.

[0129] In some embodiments, the fixing plate 213 is provided with a first avoidance hole 213b for avoiding the positioning member 30, so that the fixing plate 213 can be fully pressed down, facilitating the full contact between the suction cup group 212 and the sheet material 200.

[0130] By sharing a vacuum branch 211 for two centrosymmetric suction cup groups 212a, the reliability of adsorbing the sheet material 200 is enhanced.

[0131] According to some embodiments of the present application, the adsorption surface of the suction cup group 212 is flush with the bottom surface 213a.

[0132] After the suction cup group 212 picks up the previous sheet material 200, the next sheet material 200 may be lifted by the previous sheet material 200 and stuck on the positioning member 30 or the bristles 53, that is, the sheet material 200 breaks away from the stacked sheet materials 200 and stays in the middle part of the column 40. At this time, the flatness of the sheet material is poor, and when picking up the material, there is a problem that the picking position is inaccurate, resulting in a poor adsorption effect. By setting the adsorption surface of the suction cup group 212 to be flush with the bottom surface 213a, the adsorption surface of the suction cup group 212 and the bottom surface 213a can form a flat pressing surface. The fixing plate 213 is pressed downward under the action of the driving unit, and the sheet material 200 stuck on the positioning member 30 or the bristles 53 is pressed towards the stacked sheet materials 200 by means of the flat pressing surface, so that the sheet material 200 can return to the accurate picking position and maintain a flat state, thereby facilitating the improvement of the reliability of picking up the sheet material 200.

[0133] By setting the adsorption surface of the suction cup group 212 to be flush with the bottom surface 213a, the fixing plate 213 can press the stuck sheet material 200 back to the accurate picking position and keep it in a flat state, improving the reliability of picking up the material.

[0134] As Figure 8 As shown, according to some embodiments of the present application, the material picking unit 21 further includes a buffer structure 214, and the buffer structure 214 is arranged between the driving unit and the fixing plate 213.

[0135] The buffer structure 214 is a component that can deform to a certain extent to absorb the impact force. In some examples, the buffer structure 214 can be a spring or a flexible block.

[0136] When picking up the material, the driving unit drives the fixed plate 213 to move towards the sheet material 200 until the suction cup group 212 contacts the sheet material 200. During this process, the suction cup group 212 has a certain speed. Then, when the suction cup group 212 and the fixed plate 213 contact the sheet material 200, the sheet material 200 will receive a certain impact force. By setting the buffer structure 214, the impact force received by the sheet material 200 can be reduced to reduce the damage to the sheet material 200 caused by excessive impact force.

[0137] In some embodiments, the driving unit is connected to the bracket 22. One end of the buffer structure 214 is connected to the bracket 22, and the other end of the buffer structure 214 is connected to the fixed plate 213.

[0138] By setting the buffer structure 214 to reduce the impact force of the suction cup group 212 and the fixed plate 213 on the sheet material 200, the damage to the sheet material 200 is reduced.

[0139] As Figure 10 shown, Figure 10 is a partial structural schematic diagram of the material picking unit according to some embodiments of the present application. According to some embodiments of the present application, the buffer structure 214 includes a guide member 214a and an elastic member 214b. The guide member 214a is used to guide the fixed plate 213 to move relative to the driving unit along the first direction F1, and the elastic member 214b is used to absorb the impact force when the fixed plate 213 moves towards the sheet material placement portion 10.

[0140] The guide member 214a is a component that guides the movement of the fixed plate 213, so that the fixed plate 213 can only move relative to the driving unit along the first direction F1 to reduce the phenomenon of offset of the fixed plate 213. In some examples, the guide member 214a can be configured as a linear bearing, and the bracket 22 is connected to the fixed plate 213 through the linear bearing.

[0141] The elastic member 214b is a component that can produce plastic deformation to absorb the impact force. In some examples, the elastic member 214b can be configured as a spring, and the spring can be sleeved on the guide member 214a. The bracket 22 is connected to the fixed plate 213 through the spring.

[0142] By setting the guide member 214a and the elastic member 214b to cooperate, while playing a buffering role, it can also reduce the offset of the fixed plate 213 and improve the reliability of material picking.

[0143] As Figure 8As shown, according to some embodiments of the present application, the material taking unit 21 further includes a sensor 215 for determining whether there is an abnormality in material taking.

[0144] The situations of abnormal material taking include that the suction cup 212a fails to adsorb the sheet material 200, that is, the suction cup 212a leaks suction. Or, at least two sheet materials 200 are adsorbed on the suction cup 212a, that is, the sheet materials 200 are not fully separated. When an abnormal material taking is detected, the material taking assembly 20 can be correspondingly controlled to switch to another sheet material placement part 10 for material taking to ensure that the entire beat is not affected.

[0145] In some embodiments, the sensor 215 can be configured as a photoelectric sensor. The photoelectric sensor is used to detect the light transmittance at the suction cup 212a. If the suction cup 212a leaks suction, the detected light transmittance is higher than the preset value. If multiple sheet materials 200 are adsorbed on the suction cup 212a, the detected light transmittance is lower than the preset value, thereby determining that there is an abnormality in material taking. Among them, a second avoidance hole is provided on the fixing plate 213 for the detection end of the photoelectric sensor to pass through, so as to facilitate detection.

[0146] By setting the sensor 215 to detect the abnormal situation of material taking, it is beneficial to further improve the reliability of material taking.

[0147] As Figure 7 As shown, according to some embodiments of the present application, the material taking unit 21 further includes a gas source 216. The gas source 216 is respectively connected to a plurality of vacuum branches 211, and the gas source 216 is used to input compressed gas into the plurality of vacuum branches 211.

[0148] During unloading, the gas source 216 inputs compressed gas into the plurality of vacuum branches 211, thereby reducing the vacuum degree of the vacuum branches to reduce the adsorption force of the suction cup group 212. The sheet material 200 is separated from the suction cup group 212 under the action of gravity, and thus unloading is achieved by breaking the vacuum.

[0149] By setting the gas source 216 for inputting compressed gas into the plurality of vacuum branches 211, unloading is achieved by breaking the vacuum.

[0150] According to some embodiments of the present application, the material taking device 100 further includes a lifting mechanism for lifting the sheet material.

[0151] The lifting mechanism is used to lift the sheet material 200 to a fixed material taking height to facilitate the material taking assembly 20 to take materials. In some examples, the lifting mechanism can be connected to the sheet material placement part 10.

[0152] By setting the lifting mechanism, the sheet material 200 can be picked up at a fixed height position, improving the convenience and reliability of material taking.

[0153] According to some embodiments of the present application, the fixing plate 213 is configured as a polymer fixing plate.

[0154] The material of the fixing plate 213 can be a polymer material such as polyformaldehyde (POM) or polyetheretherketone (PEEK).

[0155] By setting the fixing plate 213 as a polymer fixing plate, the fixing plate 213 has good strength, improving the reliability of the structure.

[0156] An embodiment of the second aspect of the present application provides a battery production system, including the material taking device 100 of any of the above embodiments.

[0157] The battery device production system in this embodiment can have all the beneficial effects of the above material taking device 100, which will not be elaborated here.

[0158] Next, in conjunction with Figures 1 to 10 the embodiments of the present application will be further described in detail.

[0159] The material taking device 100 includes a sheet material placement part 10, a material taking component 20, a positioning part 30, a column 40, a material distributing component 50, an ion generator and a lifting mechanism.

[0160] The sheet material placement part 10 is a bottom plate, and the bottom plate is used to carry the sheet materials 200 stacked along the first direction F1.

[0161] The material taking component 20 includes a material taking unit 21 and a driving unit. The material taking unit 21 is used to obtain the sheet materials 200 on the sheet material placement part 10, and the driving unit is used to drive the material taking unit 21 to move.

[0162] Among them, the material taking unit includes a plurality of vacuum branches 211, a plurality of suction cup groups 212, a fixing plate 213, a buffer structure 214, a sensor 215 and a gas source 216. The plurality of vacuum branches 211 are in one-to-one correspondence and communication with the plurality of suction cup groups 212. The suction cup groups 212 are fixed on the fixing plate 213, and the adsorption surface of the suction cup groups 212 is flush with the bottom surface of the fixing plate 213. Each suction cup group 212 includes two suction cups 212a, and the two suction cups 212a of each suction cup group 212 are centrosymmetric with respect to the bottom surface of the fixing plate 213. The fixing plate 213 is connected to the driving unit through the buffer structure 214 and the bracket 22 in sequence. The buffer structure 214 includes a linear bearing and a spring sleeved on the linear bearing. The sensor 215 is a photoelectric sensor, which is used to detect the light transmittance at the suction cup 212a to judge whether there is an abnormality in material taking. The gas source 216 is used to input compressed gas into the vacuum branch 211 to realize unloading by breaking the vacuum.

[0163] The positioning member 30 is connected to the bottom plate. The positioning member 30 is arranged along the first direction F1 and is used to pass through the positioning holes of the sheet materials 200 located on the sheet material placement portion 10. Among them, an air passage is provided inside the positioning member 30. The positioning member 30 has a first air blowing hole 31, and the first air blowing hole 31 is communicated with the air passage. The first air blowing hole 31 is used to blow air between adjacent sheet materials 200. The number of the first air blowing holes 31 is multiple, and the multiple first air blowing holes 31 are arranged along the first direction F1 to form an air blowing hole group, and the multiple air blowing hole groups are arranged around the axis L of the positioning member 30.

[0164] The upright post 40 is fixed to the bottom plate, and a chamfer structure is provided at one end of the upright post 40 away from the bottom plate.

[0165] The material distribution assembly 50 is arranged on the upright post 40. Among them, the material distribution assembly 50 includes a material distribution block 51, an adjustment block 52 and bristles 53. The material distribution block 51 is movably arranged on the upright post 40 along the first direction F1. A second air blowing hole 511 is provided on the material distribution block 51, and the second air blowing hole 511 is used to blow air between adjacent sheet materials 200. The bristles 53 are fixed to the adjustment block 52, and an arc-shaped groove 521 is provided on the adjustment block 52. The contact amount between the bristles 53 and the sheet material 200 can be adjusted through the arc-shaped groove 521.

[0166] The ion generator 60 is used to ionize the gas input to the positioning member 30 and the material distribution block 51, so that the gas blown out from the first air blowing hole 31 and the second air blowing hole 511 contains ions to eliminate the static electricity between the sheet materials 200.

[0167] The lifting mechanism is connected to the bottom plate and is used to lift the sheet material 200 to a fixed height position for easy material taking.

[0168] The material taking steps of the material taking device are as follows:

[0169] Lifting: The sheet material is lifted to a fixed height position by the lifting mechanism.

[0170] Blowing air: Ionized air is blown out from the first air blowing hole 31 and the second air blowing hole 511 to eliminate the static electricity between the sheet materials 200 and prevent the sheet materials 200 from adhering to each other.

[0171] Material taking: The fixing plate 213 is pressed down to press the sheet material 200 stuck in the middle position back to the initial position. A vacuum is established in each vacuum branch 211, and the sheet material is adsorbed by the suction cup group 212, and the driving unit drives the sheet material 200 to move upward.

[0172] Scraping the material: During the upward movement of the sheet material 200, the bristles 53 can scrape the edge of the sheet material 200 to further separate the adhered sheet materials 200.

[0173] When discharging, when the driving unit moves the sheet material 200 to the next working station, compressed gas is input into the vacuum branch 211, and discharging is carried out by breaking the vacuum.

[0174] Finally, it should be noted that: the above embodiments are only used to illustrate the technical solutions of the present application, rather than limiting them; although the present application has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that: they can still modify the technical solutions recorded in the foregoing embodiments, or perform equivalent replacements on some or all of the technical features; 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 covered by the scope of the claims and the description of the present application. In particular, as long as there is no structural conflict, the technical features mentioned in each embodiment can be combined in any way. The present application is not limited to the specific embodiments disclosed in the text, but includes all technical solutions falling within the scope of the claims.

Claims

1. A material taking device (100), characterized in that: include: A sheet material placement portion (10) for carrying sheet materials (200) stacked along a first direction (F1); A material taking component (20), comprising a material taking unit (21) and a driving unit, wherein the material taking unit (21) is used to take the sheet material (200) on the sheet material placement portion (10), and the driving unit is used to drive the material taking unit (21) to move; and a positioning member (30) connected to the sheet material placement portion (10), the positioning member (30) being arranged along the first direction (F1) and being used to pass through a positioning hole of the sheet material (200) located on the sheet material placement portion (10); The positioning member (30) has an air passage therein, and the positioning member (30) has a first blowing hole (31), the first blowing hole (31) is connected to the air passage, and the first blowing hole (31) is used to blow air between adjacent sheet materials (200).

2. The material taking device (100) according to claim 1, characterized in that: The positioning member (30) has at least one blowing hole group, the blowing hole group comprising a plurality of first blowing holes (31) arranged at intervals along the first direction (F1).

3. The material taking device (100) according to claim 2, characterized in that: A plurality of the blowing hole groups are provided, and the plurality of blowing hole groups are arranged around an axis (L) of the positioning member (30) parallel to the first direction (F1).

4. The material taking device (100) according to claim 1, characterized in that: The material taking device (100) further comprises: A column (40) connected to the sheet material placement portion (10); and A material dividing assembly (50), the material dividing assembly (50) comprising a material dividing block (51) movably arranged on the column (40) along the first direction (F1), the material dividing block (51) being provided with a second blowing hole (511), the second blowing hole (511) being used for blowing air between adjacent sheet materials (200).

5. The material taking device (100) according to claim 4, characterized in that: The material distribution component (50) further includes: an adjusting block (52), the adjusting block (52) being movably disposed on the upright column (40); Bristles (53), one end of the bristles (53) being connected to the adjustment block (52), the other end of the bristles (53) extending toward a position where the sheet material (200) is placed, the bristles (53) being used to rub the edge of the sheet material (200) when the sheet material (200) passes by; Wherein, the adjustment block (52) is used to adjust the contact amount between the bristles (53) and the sheet material (200).

6. The material taking device (100) according to claim 5, characterized in that: The bristles (53) comprise a first bristle portion (531) and a second bristle portion (532) arranged along the first direction (F1); along a direction away from the sheet material placement portion (10), the length of the first bristle portion (531) extending toward the position where the sheet material (200) is placed gradually increases, while the length of the second bristle portion (532) extending toward the position where the sheet material (200) is placed is equal.

7. The material taking device (100) according to claim 4, characterized in that: One end of the upright post (40) facing away from the sheet material placement portion (10) is provided with a chamfered structure or a rounded structure, and the chamfered structure or the rounded structure is used to guide the sheet material (200) to be stacked on the sheet material placement portion (10).

8. The material taking device (100) according to claim 4, characterized in that: The material taking device (100) further comprises an ion generator (60), wherein the ion generator (60) is used to ionize the gas input into the positioning member (30) and / or the dividing block (51).

9. The material taking device (100) according to claim 1, characterized in that: The material taking device (100) further comprises an ion generator (60), wherein the ion generator (60) is used to ionize the gas input into the positioning member (30).

10. The material taking device (100) according to any one of claims 1 to 9, characterized in that: The material taking unit (21) comprises: a plurality of vacuum branches (211); The plurality of suction cup groups (212) are connected to the plurality of vacuum branches (211) in a one-to-one correspondence, and the plurality of suction cup groups (212) are used to obtain the sheet material (200) on the sheet material placement portion (10).

11. The material taking device (100) according to claim 10, characterized in that: At least one of the plurality of vacuum branches (211) is also provided with a vacuum maintaining unit.

12. The material taking device (100) according to claim 11, characterized in that: The vacuum maintaining unit is configured as a vacuum logic valve (V).

13. The material taking device (100) according to claim 10, characterized in that: At least one of the plurality of vacuum branches (211) is also provided with a negative pressure gauge (P).

14. The material taking device (100) according to claim 10, characterized in that: The material taking unit (21) further comprises: a fixing plate (213); The plurality of suction cup groups (212) are arranged on the fixing plate (213) and face the bottom surface (213a) of the sheet material (200), and at least one of the plurality of suction cup groups (212) includes two suction cups (212a), and the two suction cups (212a) are centrally symmetrical relative to the center of the bottom surface (213a).

15. The material taking device (100) according to claim 14, characterized in that: The adsorption surface of the suction cup group (212) is flush with the bottom surface (213a).

16. The material taking device (100) according to claim 14, characterized in that: The material taking unit (21) further comprises: a buffer structure (214); the buffer structure (214) is arranged between the driving unit and the fixing plate (213).

17. The material taking device (100) according to claim 16, characterized in that: The buffer structure (214) comprises: A guide member (214a) for guiding the fixing plate (213) to move relative to the driving unit along the first direction (F1); An elastic component (214b) is used to absorb the impact force when the fixed plate moves toward the sheet material placement portion (10).

18. The material taking device (100) according to claim 10, characterized in that: The material taking unit (21) further comprises a sensor (215) for determining whether an abnormality occurs in the material taking.

19. The material taking device (100) according to claim 10, characterized in that: The material taking unit (21) further comprises an air source (216), wherein the air source (216) is respectively connected to the plurality of vacuum branches (211), and the air source (216) is used to input compressed gas into the plurality of vacuum branches (211).

20. The material taking device (100) according to any one of claims 1 to 9, characterized in that: The material taking device (100) further comprises a lifting mechanism for lifting the sheet material.

21. The material taking device (100) according to claim 14, characterized in that: The fixing plate (213) is configured as a polymer fixing plate.

22. A battery production system, characterized in that: It comprises a material taking device (100) as claimed in any one of claims 1 to 21.

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