Composite current collector roll changing and coating equipment

Abstract

The utility model relates to the technical field of roll changing equipment, in particular to composite current collector roll changing and coating equipment, which comprises a conveying component, a roll changing component, a coating component, a roll changing component, a roll changing component, a roll changing component, a roll changing component, a roll changing component, a roll changing component, a roll changing component and a roll changing component, the roll changing assembly comprises a material receiving platform and a second lead screw which are arranged on the supporting seat, an adsorption part arranged on the second lead screw, and a cutting-off part matched with the adsorption part for use, a thin film can be unwound and wound by arranging the conveying assembly, a cooling roller can descend when a plating solution is reduced through a lifting part, and the cutting-off part is used in cooperation with the adsorption part. The film can be in full contact with a plating solution; by arranging the roll changing assembly and the cutting part, the thin film can be cut off, meanwhile, through the adsorption part, an opening of a new thin film can be adsorbed to move the new thin film to the material receiving platform to be connected with the cut-off position of an old thin film, and therefore roll changing is rapidly completed.

Description

Technical Field

[0001] The utility model relates to the technical field of roll-changing equipment, in particular to a composite current collector roll-changing coating equipment. Background Art

[0002] Composite current collectors are a new type of lithium battery current collector material. They are composed of polymer materials and metals. Their main function is to collect current and carry positive and negative active materials. This material plays a vital role in lithium-ion batteries. It not only carries positive and negative active materials, but also transmits current from the positive and negative electrodes of the battery to the active materials during the charge and discharge process, and collects and outputs the current generated by the active materials, thereby reducing the internal resistance of the battery and improving the coulombic efficiency, cycle stability and rate performance of the battery. Composite current collectors usually adopt a "sandwich" structure, that is, a metal layer of a certain thickness, such as copper or aluminum, is plated on both sides of the polymer material layer. This structure can significantly reduce the material cost and weight of the current collector by using polymer materials to replace some metal materials. At the same time, the composite current collector also has high safety, can effectively prevent battery spontaneous combustion and thermal runaway, and improve the cycle life of the battery.

[0003] In the existing composite current collector process, the materials need to be plated in PVD equipment. The vacuum chamber needs to be opened to replace the film after each production. However, the roll changing and vacuuming during the plating process take up more than half of the production time, which in turn affects production and reduces efficiency. Utility Model Content

[0004] The purpose of this section is to summarize some aspects of the embodiments of the present invention and briefly introduce some preferred embodiments. Some simplifications or omissions may be made in this section and in the abstract and title of the utility model to avoid obscuring the purpose of this section, the abstract and the title of the utility model, and such simplifications or omissions shall not be used to limit the scope of the present invention.

[0005] In view of the problem that coil changing and air breaking and evacuation in the above-mentioned plating process take up more than half of the production time, thereby affecting production and reducing efficiency, the present utility model is proposed.

[0006] Therefore, the purpose of the present invention is to provide a composite current collector roll-changing coating device.

[0007] In order to solve the above technical problems, the utility model provides the following technical solutions: a composite current collector roll-changing coating equipment, comprising: a accommodating component, including a box body; a conveying component, including a unwinding chamber and a winding chamber opened in the box body, a rotating disk arranged in the unwinding chamber, and a rotating part and a support seat used in conjunction with the rotating disk; a roll-changing component, including a material receiving platform and a second screw rod arranged on the support seat, an adsorption part arranged on the second screw rod, and a cutting part used in conjunction with the adsorption part.

[0008] As a preferred solution of the composite current collector roll-changing coating equipment described in the present invention, a coating cavity is provided inside the box body, and the coating cavity is separated from the unwinding cavity and the winding cavity by a partition. The interior of the box body is provided with a guide roller arranged in the unwinding cavity, a cooling roller arranged in the coating cavity, and a lifting part and a coating part used in conjunction with the cooling roller.

[0009] As a preferred solution of the composite current collector roll-changing coating equipment described in the utility model, the lifting component includes a placement groove symmetrically opened on the inner wall of the box, a first screw rod arranged in the placement groove, a slider and a first belt arranged on the first screw rod, and a first motor arranged on the box.

[0010] As a preferred solution of the composite current collector roll-to-roll coating equipment of the present invention, the cooling roller is rotatably installed between two sliders, and one of the first screw rods is fixedly connected to the output end of the first motor.

[0011] As a preferred solution of the composite current collector roll-to-roll coating equipment of the present invention, the coating component includes a heating portion arranged in the coating cavity and an evaporation boat arranged on the top of the heating portion.

[0012] As a preferred solution of the composite current collector roll-to-roll coating equipment of the present invention, the heating part is located directly below the cooling roller, and the heating part is used to heat the evaporation boat, and there are several evaporation boats.

[0013] As a preferred solution of the composite current collector roll-changing coating equipment described in the present invention, the rotating part includes a driving motor arranged on the outer wall of the box body, a fixed seat arranged on the rotating disk, a lower clamping plate arranged on the fixed seat, an upper clamping plate hinged to the lower clamping plate, a clamping block arranged on the upper clamping plate, a rotating block and a magnet arranged on the fixed seat, and a clamping slot opened inside the rotating block.

[0014] As a preferred solution of the composite current collector roll-to-roll coating equipment of the present invention, the adsorption component includes a blocking block and a moving block arranged on the second screw rod, and a vacuum adsorber body arranged on the moving block.

[0015] As a preferred solution of the composite current collector roll-changing coating equipment described in the present invention, the second screw rod is located between the partition and the support seat, a power source is provided inside the support seat, and one end of the second screw rod is fixedly connected to the output end of the power source.

[0016] As a preferred solution of the composite current collector roll-changing coating equipment described in the utility model, the cutting piece includes lifting grooves symmetrically opened on both sides of the inner wall of the box, a third screw rod arranged in the lifting groove, a second belt and a horizontal plate arranged between the two third screw rods, a second motor arranged on the top of the box, and a cutter arranged at the bottom of the horizontal plate.

[0017] The beneficial effects of the present invention are as follows: the present invention can unwind and rewind the film through the conveying component, and can coat the film in the plating solution through the cooling roller, and at the same time, through the lifting component, the cooling roller can be lowered when the plating solution is reduced, so that the film can fully contact the plating solution, and by arranging the coating component, the evaporation boat can heat the molten metal and evaporate the metal into metal vapor, so that the metal vapor migrates upward and is deposited on the film to form a coating; by arranging the roll changing component and the cutting component, the film can be cut, and at the same time, through the adsorption component, the opening of the new film can be adsorbed and moved to the material connection platform, and connected with the cut end of the old film, thereby quickly completing the roll changing. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following briefly introduces the drawings required for use in the description of the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0019] Figure 1 This is an overall schematic diagram of a composite current collector roll-to-roll coating equipment.

[0020] Figure 2 for Figure 1 Schematic diagram of the cross-sectional structure.

[0021] Figure 3 It is a structural diagram of the lifting parts.

[0022] Figure 4 Schematic diagram of the structure of the coated part.

[0023] Figure 5 Schematic diagram of the structure of the rotating part.

[0024] Figure 6 It is a structural schematic diagram after the lower splint and the upper splint are separated.

[0025] Figure 7 for Figure 2 Magnified view of area A in center.

[0026] Figure 8 Schematic diagram of the structure of the cut piece. DETAILED DESCRIPTION

[0027] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the specific implementation methods of the present invention are described in detail below with reference to the accompanying drawings.

[0028] In the following description, many specific details are set forth to facilitate a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Those skilled in the art may make similar generalizations without violating the connotation of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0029] Secondly, the term "one embodiment" or "embodiment" herein refers to a specific feature, structure, or characteristic that may be included in at least one implementation of the present invention. The phrase "in one embodiment" appearing in various places throughout this specification does not necessarily refer to the same embodiment, nor does it refer to a separate or selective embodiment that is mutually exclusive with other embodiments.

[0030] Furthermore, the present invention is described in detail with reference to schematic diagrams. For ease of illustration, when describing embodiments of the present invention, cross-sectional views of device structures may be partially enlarged and not to scale. Furthermore, the schematic diagrams are merely illustrative and should not limit the scope of protection of the present invention. Furthermore, in actual production, three-dimensional dimensions, including length, width, and depth, should be included.

[0031] Example 1

[0032] Reference Figure 1 - Figure 3 , which is the first embodiment of the present invention, provides a composite current collector roll-to-roll coating device, including a housing assembly 300, including a box 301, the box 301 being a composite current collector, the outer wall of the box 101 and located between two partitions 102 are provided with glass windows, there are two sets of glass windows, and the outer wall of the box 101 and located on both sides of the glass windows are hinged with box doors;

[0033] The conveying assembly 100 includes an unwinding chamber 103 and a rewinding chamber 104 symmetrically disposed within the housing 301, a rotating disk 109 rotatably mounted within the unwinding chamber 103, and a rotating member 110 and a support base 111 used in conjunction with the rotating disk 109. The rotating disk 109 is supported by the support base 111.

[0034] The roll changing assembly 200 includes a material receiving platform 201 and a second screw rod 202 arranged on the support seat 111, an adsorption part 203 arranged on the second screw rod 202, which adsorbs the new film through the adsorption part 203 so that the opening of the new film can be moved to the material receiving platform 201, and a cutting part 204 used in conjunction with the adsorption part 203, which cuts the film through the cutting part 204.

[0035] Specifically, a coating chamber is provided inside the box body 301, and the coating chamber is separated from the unwinding chamber 103 and the winding chamber 104 by a partition 102. Vacuum equipment is provided inside the unwinding chamber 103 and the winding chamber 104, so that the unwinding chamber 103 and the winding chamber 104 become vacuum chambers, and an infrared locator is provided. The internal structures of the unwinding chamber 103 and the winding chamber 104 are symmetrical. The unwinding chamber 103 is used to unwind the film, and the winding chamber 104 is used to wind the film and is fixedly installed with a guide roller 105 in the unwinding chamber 103. Each group of guide rollers 105 has two cooling rollers 106 provided in the coating chamber, as well as a lifting member 107 and a coating member 108 used in conjunction with the cooling roller 106. The cooling roller 106 is lifted and lowered by the lifting member 107, and a coating layer is formed on the film by the coating member 108.

[0036] Furthermore, the lifting member 107 includes a placement groove symmetrically opened on the inner wall of the box body 301, the placement groove is located between the two partitions 102, a first screw rod 107a rotatably installed in the placement groove, a slider 107b and a first belt 107c arranged on the first screw rod 107a, the slider 107b is threadedly installed on the first screw rod 107a, and a first motor 107d is arranged on the box body 301.

[0037] Furthermore, the cooling roller 106 is rotatably installed between the two sliders 107b, and the cooling roller 106 is driven to rise and fall by the two sliders 107b, wherein one of the first screw rods 107a is fixedly connected to the output end of the first motor 107d.

[0038] Operation process: When in use, the film opening on the rotating disk 109 is pulled outward so that it passes through the guide roller 105 in the unwinding chamber 103, the cooling roller 106 and the guide roller 105 in the winding chamber 104 in turn, and is connected to the air shaft on the rotating disk 109 in the winding chamber 104. The film is coated with the plating solution between the two partitions 102, and the film is transported by the rotating parts 110 in the unwinding chamber 103 and the winding chamber 104. The film is passed through the cooling roller 106 to pass through the metal vapor coating. As the film is transported, the plating solution will be consumed and reduced accordingly. At this time, the first motor 107d is started to drive the first screw rod 107a connected to it to rotate, and the other first screw rod 107a is also rotated through the transmission of the first belt 107c, so that the two sliders 107b drive the cooling roller 106 to descend, and then press the film down so that the film can fully contact the metal vapor.

[0039] Example 2

[0040] Reference Figure 1 - Figure 4 , which is the second embodiment of the present utility model. This embodiment is different from the first embodiment in that the coating member 108 includes a heating portion 108a arranged in the coating cavity, and a heating rod is arranged inside the heating portion 108a. By connecting the heating portion 108a to a power source, the heating rod will generate heat through the internal resistance wire, thereby heating the evaporation boat 108b, and the evaporation boat 108b arranged on the top of the heating portion 108a. The heated evaporation boat 108b can heat the molten metal and evaporate the metal into metal vapor, and the metal vapor migrates upward and is deposited on the film to form a coating.

[0041] Specifically, the heating part 108a is located directly below the cooling roller 106. A pull ring is provided on one side of the heating part 108a. The heating part 108a is used to heat the evaporation boat. There are several evaporation boats 108b. A metal frame is provided on the outer wall of the evaporation boat 108b. The metal frame increases the weight of the evaporation boat 108b so that the evaporation boat 108b will not float in the plating solution.

[0042] The rest of the structure is the same as that of Example 1.

[0043] Operation process: During the film coating process, by connecting the heating part 108a to the power supply, the heating rod will generate heat through the internal resistance wire, and then heat the evaporation boat 108b. After the evaporation boat 108b is heated, the molten metal is heated by the evaporation boat 108b and the metal is evaporated into metal vapor. The metal vapor migrates upward and deposits on the film to form a coating. At the same time, the top of the film contacts the bottom of the cooling roller 106. The cooling roller 106 cools the film with the coating to prevent the film from being burned and forming holes. After stopping the coating work, the staff pulls the pull ring on the heating part 108a to pull the heating part 108a outward for cleaning, and then pushes the heating part 108a to reset and restart the coating work.

[0044] Example 3

[0045] Reference Figure 5 - Figure 8 , which is the third embodiment of the present utility model. This embodiment is different from the above embodiments in that the rotating member 110 includes a driving motor 110a provided on the outer wall of the box body 301, the output end of the driving motor 110a is connected to the rotating disk 109, and the rotating disk 109 is rotated by the driving motor 110a, and a fixing base 110b provided on the rotating disk 109, the fixing base 110b is annularly mounted on the rotating disk 109, and a lower clamping plate 110c fixedly mounted on the fixing base 110b, and a lower clamping plate 110c is fixedly mounted on the fixing base 110b. The upper splint 110d hinged to the splint 110c is set on the inflatable shaft between the lower splint 110c and the upper splint 110d, and the inflatable shaft is clamped and fixed by the lower splint 110c and the upper splint 110d. Each inflatable shaft is provided with a film, a clamping block 110e fixedly mounted on the upper splint 110d, a rotating block 110f and a magnet 110g set on the fixed seat 110b, the rotating block 110f is hinged on the fixed seat 110b, and a clamping slot 110h is opened inside the rotating block 110f.

[0046] Specifically, the adsorption part 203 includes a blocking block 203a and a moving block 203b arranged on the second screw rod 202. The blocking block 203a and the second screw rod 202 are rotationally connected. The blocking block 203a is fixedly installed at the bottom end of the inner wall of the box body 301, the moving block 203b is threadedly installed on the second screw rod 202, and the vacuum adsorber body 203c is fixedly installed on the moving block 203b.

[0047] Furthermore, the second screw rod 202 is located between the partition 102 and the support seat 111. A power source is provided inside the support seat 111. One end of the second screw rod 202 is fixedly connected to the output end of the power source, and the second screw rod 202 is driven to rotate by the power source.

[0048] Furthermore, the cutting piece 204 includes a lifting groove 204a symmetrically opened on both sides of the inner wall of the box body 301, a third screw rod 204b rotatably installed in the lifting groove 204a, a second belt 204c and a horizontal plate 204d arranged between the two third screw rods 204b, the horizontal plate 204d is threadedly installed on the third screw rod 204b, a second motor 204e installed on the top of the box body 301, and a cutter 204f fixedly installed at the bottom of the horizontal plate 204d.

[0049] The rest of the structure is the same as that of Example 2.

[0050] Operation process: When the film is about to be unwound, the second motor 204e in the unwinding chamber 103 is started, so that the third screw rod 204b connected thereto rotates, and the transmission of the second belt 204c causes the other third screw rod 204b to rotate synchronously, thereby causing the cross plate 204d to drive the cutter 204f to descend. When the cutter 204f descends, it will contact the film. Since there is still some film left, it will not be cut at this time, and the continuous descent of the cutter 204f will also pull the film downward. When the film and After the top of the receiving platform 201 contacts, the film is cut by the tension between the film and the air shaft, and then the cutter 204f is reset. At this time, the second screw 202 is driven by the power source to rotate, so that the moving block 203b drives the vacuum absorber body 203c to move to the appropriate position and start, and the opening of the new film is adsorbed onto the receiving platform 201. At this time, the staff opens the box door and heat-seals the opening of the new film with the cut end of the old film to splice the two sets of films together, and then starts the drive motor. 110a drives the rotating disk 109 to rotate, and then rotates the new film to a position flush with the guide roller 105 for winding, and the old film will be at the top of the rotating disk 109 at this time. At this time, the staff will rotate the rotating block 110f outward so that the rotating block 110f and the magnet 110g are no longer in contact, and the card slot 110h will also be disengaged from the card block 110e, thereby releasing the fixation of the upper clamping plate 110d, and then rotate the upper clamping plate 110d through the hinge, take out the inflatable shaft, and then put in a new inflatable shaft to and film, and then reset the upper clamping plate 110d through the hinge, reset the rotating block 110f, fix the rotating block 110f through the magnet 110g, and fix the card block 110e through the card slot 110h, so that the lower clamping plate 110c and the upper clamping plate 110d clamp the inflatable shaft to complete the film rewinding. When the inflatable shaft in the winding chamber 104 is about to fill the film, then start the second motor 204e in the winding chamber 104 to make the cutter 204f descend, and repeat the above steps to complete the rewinding.

[0051] It is important to note that the construction and arrangement of the present application shown in a number of different exemplary embodiments are merely illustrative. Although only a few embodiments are described in detail in this disclosure, it should be readily understood by those who refer to this disclosure that many modifications are possible (e.g., the size, scale, structure, shape and proportion of various elements, and parameter values ​​(e.g., temperature, pressure, etc.), mounting arrangements, use of materials, colors, directional changes, etc.) without substantially departing from the novel teachings and advantages of the subject matter described in this application. For example, an element shown as integrally formed can be composed of multiple parts or elements, the position of the element can be inverted or otherwise changed, and the nature or number or position of the discrete elements can be altered or changed. Therefore, all such modifications are intended to be included within the scope of the present invention. The order or sequence of any process or method steps can be changed or reordered according to alternative embodiments. In the claims, any "means plus function" clause is intended to cover the structure of the execution function described herein, and is not only structurally equivalent but also an equivalent structure. Without departing from the scope of the present invention, other substitutions, modifications, changes and omissions may be made in the design, operating conditions and arrangement of the exemplary embodiments. Therefore, the present invention is not limited to the specific embodiments, but extends to various modifications that still fall within the scope of the appended claims.

[0052] Additionally, in order to provide a concise description of example embodiments, all features of an actual embodiment (ie, those features that are not relevant to the best mode presently contemplated for carrying out the invention or those that are not relevant to implementing the invention) may not be described.

[0053] It will be appreciated that in the development of any actual embodiment, as in any engineering or design project, numerous implementation-specific decisions may be made. Such a development effort may be complex and time-consuming, but will, for those of ordinary skill having the benefit of this disclosure, be a routine undertaking of design, fabrication, and production without undue experimentation.

[0054] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and are not intended to limit the present invention. Although the present invention has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solutions of the present invention may be modified or replaced by equivalents without departing from the spirit and scope of the technical solutions of the present invention, and all of these should be included in the scope of the claims of the present invention.

Claims

1. A composite current collector roll-to-roll coating device, characterized by: include, A receiving assembly (300) includes a box (301); The conveying assembly (100) comprises an unwinding chamber (103) and a rewinding chamber (104) provided in the box body (301), a rotating disk (109) provided in the unwinding chamber (103), and a rotating member (110) and a supporting seat (111) used in conjunction with the rotating disk (109); The roll changing assembly (200) comprises a material receiving platform (201) and a second screw rod (202) arranged on the support seat (111), an adsorption member (203) arranged on the second screw rod (202), and a cutting member (204) used in conjunction with the adsorption member (203).

2. The composite current collector roll-to-roll coating device according to claim 1, characterized in that: A coating cavity is provided inside the box body (301), and the coating cavity is separated from the unwinding cavity (103) and the winding cavity (104) by a partition (102). The box body (301) is provided with a guide roller (105) arranged in the unwinding cavity (103), a cooling roller (106) arranged in the coating cavity, and a lifting part (107) and a coating part (108) used in conjunction with the cooling roller (106).

3. The composite current collector roll-to-roll coating device according to claim 2, characterized in that: The lifting member (107) includes a placement groove symmetrically opened on the inner wall of the box body (301), a first screw rod (107a) arranged in the placement groove, a slider (107b) and a first belt (107c) arranged on the first screw rod (107a), and a first motor (107d) arranged on the box body (301).

4. The composite current collector roll-to-roll coating device according to claim 3, characterized in that: The cooling roller (106) is rotatably mounted between two sliders (107b), wherein one of the first screw rods (107a) is fixedly connected to the output end of the first motor (107d).

5. The composite current collector roll-to-roll coating device according to claim 4, characterized in that: The coating component (108) comprises a heating portion (108a) arranged in a coating cavity, and an evaporation boat (108b) arranged at the top of the heating portion (108a).

6. The composite current collector roll-to-roll coating device according to claim 5, characterized in that: The heating part (108a) is located directly below the cooling roller (106). The heating part (108a) is used to heat the evaporation boat. There are a plurality of evaporation boats (108b).

7. The composite current collector roll-to-roll coating device according to claim 1, characterized in that: The rotating member (110) includes a driving motor (110a) arranged on the outer wall of the box (301), a fixed seat (110b) arranged on the rotating disk (109), a lower clamping plate (110c) arranged on the fixed seat (110b), an upper clamping plate (110d) hinged to the lower clamping plate (110c), a clamping block (110e) arranged on the upper clamping plate (110d), a rotating block (110f) and a magnet (110g) arranged on the fixed seat (110b), and a clamping slot (110h) provided inside the rotating block (110f).

8. The composite current collector roll-to-roll coating device according to claim 1 or 7, characterized in that: The adsorption member (203) comprises a blocking block (203a) and a moving block (203b) arranged on the second screw rod (202), and a vacuum adsorption device body (203c) arranged on the moving block (203b).

9. The composite current collector roll-to-roll coating device according to claim 8, characterized in that: The second screw rod (202) is located between the partition (102) and the support seat (111), a power source is provided inside the support seat (111), and one end of the second screw rod (202) is fixedly connected to the output end of the power source.

10. The composite current collector roll-to-roll coating device according to claim 1, characterized in that: The cutting piece (204) comprises lifting grooves (204a) symmetrically arranged on both sides of the inner wall of the box body (301), a third screw rod (204b) arranged in the lifting groove (204a), a second belt (204c) and a transverse plate (204d) arranged between the two third screw rods (204b), a second motor (204e) arranged at the top of the box body (301), and a cutter (204f) arranged at the bottom of the transverse plate (204d).

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