Printing ink roll printing device capable of wrapping edge of battery piece with printing ink

Abstract

The utility model discloses an ink roll printing device capable of wrapping the edge of a battery piece with ink, which comprises a base, roller motion devices are symmetrically arranged above the base, the battery piece is arranged between the roller motion devices, each roller motion device comprises a guide rail, and the two ends of each guide rail are bent towards the battery piece. A rack is arranged on the guide rail, the rack is in meshed connection with a gear, a rotating shaft is in interference fit with an inner ring of the gear, the bottom end of the rotating shaft is fixedly connected with the output end of a second rotating motor, and the side face of the second rotating motor is connected with a pulley through a connecting rod; according to the utility model, through the roller movement device, the problem that the edge of a battery piece is wrapped by a special flowing medium is solved, the formation of a barrier layer on the edge and the side surface of a product is realized, and the requirement on the process quality of the product is met.

Description

Technical Field

[0001] The utility model relates to the technical field of battery cell production, in particular to an ink rolling printing device capable of wrapping the edge of a battery cell with ink. Background Art

[0002] With the gradual expansion of global photovoltaic installed capacity, the consumption of silver paste has gradually received attention from the industry. Currently, the global annual output of metallic silver is about 30,000 tons, and the output has been relatively stable in the past 10 years. At present, global photovoltaic silver accounts for about 10% of global silver production. If the global photovoltaic installed capacity reaches more than 1000GW, it is estimated that silver consumption will reach more than 50% of global silver production (assuming silver electrodes, without considering the replacement of silver by factors such as silver-clad copper). If the industry insists on the existing technical route, it is highly likely that the silver price will get out of control. Therefore, reducing the cost of heterojunction batteries and replacing silver with copper for the grid line is a direction for the next generation of battery technology.

[0003] Compared with other heterojunction battery technologies, the copper grid heterojunction battery technology has a more competitive market in terms of comprehensive cost. When the copper grid is electroplated in the copper plating process, the edges and sides of the battery cell need to be coated with ink to ensure the formation of a barrier layer. When the copper electrode grows on the side of the silicon wafer during the electroplating process, the barrier layer can effectively prevent the battery cell from leaking electricity, short circuiting and other undesirable phenomena. However, the existing technology mainly uses the clamp printing technology and the fixed roller printing technology to cover the ink around and on the sides of the battery cell, but the existing technology generally has the problem of not being able to cover the chamfers around the battery cell with ink and the problem of inconvenient control of the ink wrapping thickness. Utility Model Content

[0004] The purpose of the utility model is to improve and innovate the shortcomings and problems existing in the background technology, and to provide an ink rolling printing device which can realize ink wrapping the edge of a battery cell.

[0005] An ink rolling device capable of wrapping the edge of a battery cell with ink comprises a base, roller motion devices are symmetrically arranged above the base, battery cells are placed between the roller motion devices, the roller motion device comprises a guide rail, both ends of the guide rail are bent toward the battery cell so that both ends of the guide rail form a chamfered contour structure adapted to the chamfers at the four corners of the battery cell, a rack is arranged on the guide rail, the rack is meshedly connected with a gear, a rotating shaft is interference fit with the inner ring of the gear, the bottom end of the rotating shaft is fixedly connected to the output end of a second rotating motor, a pulley is connected to the side of the second rotating motor via a connecting rod, the pulley is rollingly engaged with a slide groove provided on the guide rail, a roller is fixedly connected to the top end of the rotating shaft, and a rubber layer is arranged on the outer side of the roller.

[0006] A further solution is that the second rotating motor is installed on a connecting plate, the connecting plate is in a]-shape, and one end of the connecting plate away from the second rotating motor is fixedly connected to a fixed frame, and the upper end of the rotating shaft is rotatably connected to a bearing set on the fixed frame and then connected to the roller, and the roller is set in the fixed frame.

[0007] A further solution is that a universal wheel is provided on the lower surface of the connecting plate, and the universal wheel is in rolling cooperation with the upper surface of the base.

[0008] A further solution is that a sealing ring is provided on the bottom wall of the fixed frame, and the inner ring of the sealing ring is rotatably matched with the outer surface of the rotating shaft.

[0009] A further solution is that a nozzle is provided on the side wall of the fixed frame, and the nozzle is connected to the ink storage device through a connecting hose. A scraper is also provided on the side wall of the fixed frame, and the front end of the scraper is gap-matched with the outer surface of the rubber layer.

[0010] A further solution is that the battery cell is placed on a vacuum platform, and an air extraction hole is opened on the vacuum platform.

[0011] A further solution is that the lower surface of the vacuum platform is fixedly connected to the output end of the first rotating motor, and the first rotating motor is installed on the base.

[0012] A further solution is that one end of the guide rail away from the battery sheet is connected to the telescopic end of the electric telescopic rod, and the electric telescopic rod is installed on the base.

[0013] Compared with the prior art, the utility model has the following beneficial effects: (1) the utility model places the battery cell on a vacuum platform, and the vacuum platform draws vacuum to absorb the battery cell, thereby fixing the battery cell, so that when the roller moving device moves relative to the battery cell, it is convenient to apply ink on the side of the battery cell;

[0014] (2) The battery cell is placed between the guide rails, and the rubber layers on both sides of the battery cell are pressed against the battery cell, so that the rubber layers at the pressed positions are recessed inward, so that the sides and edges of the battery cell are in contact with the rubber layers, so that the ink on the rubber layers can be coated on the sides and edges of the battery cell; in addition, chamfering profiling structures adapted to the chamfers at the four corners of the battery cell are provided at both ends of the guide rails, so that the rubber layers can be in contact with the chamfers at the four corners of the battery cell, thereby solving the problem that the prior art cannot cover the chamfers around the battery cell with ink;

[0015] (3) The utility model sprays ink onto the rubber layer through a nozzle, and arranges a scraper to make the ink thickness on the rubber layer evenly distributed. The motor drives the roller to roll forward at a constant speed, which is conducive to controlling the uniformity of the ink wrapping thickness. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the technical solutions of the embodiments of the utility model, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0017] Figure 1 It is a schematic diagram of the cross-sectional structure of the utility model;

[0018] Figure 2 For the utility model Figure 1 Schematic diagram of the structure viewed from above in the cross section at AA in the middle;

[0019] Figure 3 For the utility model Figure 1 A schematic diagram of the partially enlarged structure at center A;

[0020] Figure 4 For the utility model Figure 2 A schematic diagram of the partially enlarged structure at B in the middle;

[0021] Figure 5 It is a schematic diagram of the top view of the vacuum platform of the utility model.

[0022] Figure numerals: base 1, electric telescopic rod 2, guide rail 3, rack 4, battery cell 5, vacuum platform 6, exhaust hole 61, first rotating motor 7, connecting plate 8, universal wheel 9, second rotating motor 10, gear 11, pulley 12, fixed frame 13, roller 14, rubber layer 15, nozzle 16, scraper 17, sealing ring 18, bearing 19. DETAILED DESCRIPTION

[0023] In order to make the purpose, 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.

[0024] It should be noted that when an element is referred to as being "fixed to" another element, it may be directly on the other element or there may be an intermediate element. When an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be an intermediate element at the same time.

[0025] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art in the technical field of the present invention. The terms used herein in the specification of the present invention are only for the purpose of describing specific implementations and are not intended to limit the present invention. The term "and / or" used herein includes any and all combinations of one or more related listed items.

[0026] See also Figure 1-Figure 5 The utility model provides an ink rolling printing device that can wrap the edge of a battery cell with ink, including a base 1, and roller motion devices are symmetrically arranged above the base 1, and battery cells 5 are placed between the roller motion devices. Specifically, the battery cell 5 is placed on a vacuum platform 6, and an air extraction hole 61 is opened on the vacuum platform 6. The vacuum platform 6 vacuumizes the lower surface of the battery cell 5 through the air extraction hole 61 to adsorb the battery cell 5, thereby fixing the battery cell 5 and preventing the battery cell 5 from moving left and right. The battery cell 5 can be placed on the vacuum platform 6 by grabbing the battery cell 5 by a manipulator, or a conveyor belt can be arranged on both sides of the vacuum platform 6, and the upper surface of the conveyor belt is flush with the upper surface of the vacuum platform 6. The conveyor belt transports the battery cell 5 to the vacuum platform 6. The structure of placing the battery cell 5 on the vacuum platform 6 is not specifically limited in this application, and all are within the protection scope of this application.

[0027] The roller motion device includes a guide rail 3, one end of the guide rail 3 away from the battery cell 5 is connected to the telescopic end of the electric telescopic rod 2, and the electric telescopic rod 2 is installed on the base 1. The guide rails 3 are arranged in groups of two, and are arranged on both sides of the battery cell 5. The ends of the two guide rails 3 are fixedly connected to each other. The telescopic end of the electric telescopic rod 2 is connected to the end of the guide rail 3. The two ends of the guide rail 3 are bent toward the battery cell 5 so that the two ends of the guide rail 3 form a chamfered contour structure that adapts to the chamfers at the four corners of the battery cell 5. A rack 4 is provided on the guide rail 3, and the rack 4 is meshed and connected with a gear 11. The inner ring of the gear 11 is interference-fitted with a rotating shaft. The bottom end of the rotating shaft is fixedly connected to the output end of the second rotating motor 10, and the second rotating motor 10 has a forward and reverse rotation function. The side of the second rotating motor 10 is connected to a pulley 12 through a connecting rod, and the pulley 12 is rollingly matched with the slide groove opened on the guide rail 3. The top of the rotating shaft is fixedly connected to a roller 14, and a rubber layer 15 is provided on the outer side of the roller 14. It can be understood that, by extending and retracting the electric telescopic rod 2, the roller motion devices on both sides of the battery sheet 5 can be driven to move toward or away from each other, so as to adjust the distance between the battery sheet 5 and the roller motion device, so as to facilitate the placement of the battery sheet 5 between the roller motion devices, and facilitate the roller motion device to drive the rubber layer 15 to move toward one end close to the battery sheet 5, so that the battery sheet 5 squeezes the rubber layer 15, and the deformed rubber layer 15 is concave inward, so that the side and edge of the battery sheet 5 are in contact with the rubber layer 15, so that the ink on the rubber layer 15 can be applied not only to the battery sheet 5, but also to the battery sheet 5. The side of the pool sheet 5 can also be coated on the edge of the battery sheet 5, so as to solve the problem of leakage, short circuit and other undesirable phenomena of the battery sheet when the copper electrode grows on the side of the silicon sheet during the electroplating process; in addition, when the second rotating motor 10 is started, the second rotating motor 10 drives the gear 11 to rotate. Since the rack 4 is fixed, the rack 4 reacts to the gear 11, so that the second rotating motor 10, the gear 11, the roller 14 and the pulley 12 move along the length direction of the guide rail 3, and the pulley 12 rolls along the slide groove, so that the ink on the rubber layer 15 is rolled along the side of the battery sheet 5. More importantly, the two ends of the guide rail 3 are provided with chamfered profiling structures adapted to the chamfers at the four corners of the battery sheet 5, so that the rubber layer 15 can contact the chamfers at the four corners of the battery sheet 5, thereby solving the problem that the existing technology cannot cover the chamfers around the battery sheet 5 with ink.

[0028] Furthermore, the second rotary motor 10 is mounted on the connecting plate 8, and a universal wheel 9 is provided on the lower surface of the connecting plate 8, and the universal wheel 9 is in rolling cooperation with the upper surface of the base 1. By providing the universal wheel 9, the second rotary motor 10, the gear 11, the roller 14 and the pulley 12 can move more smoothly along the length direction of the guide rail 3. The connecting plate 8 is in the shape of a], and the end of the connecting plate 8 away from the second rotary motor 10 is fixedly connected to the fixed frame 13, and the upper end of the rotating shaft is connected to the bearing 19 provided on the fixed frame 13 and then connected to the roller 14, and the bearing 19 can be a ceramic bearing, and the roller 14 is provided in the fixed frame 13, so that the fixed frame 13 can collect dripping ink. A nozzle 16 is provided on the side wall of the fixed frame 13, and the nozzle 16 is connected to the ink storage device through a connecting hose. A scraper 17 is also provided on the side wall of the fixed frame 13, and the front end of the scraper 17 is in clearance cooperation with the outer surface of the rubber layer 15. By setting the nozzle 16, ink can be sprayed on the rubber layer 15, and the rubber layer 15 is continuously replenished with ink. By setting the scraper 17, the ink thickness on the rubber layer 15 is evenly distributed, and the motor drives the roller 14 to roll forward at a constant speed, which is beneficial to control the uniformity of the ink wrapping thickness, and can effectively control the ink wrapping thickness on the battery cell 5.

[0029] It should be noted that the ink storage device can be arranged on the base 1 or on the top wall of the fixed frame 13. This application does not make any specific limitation and all are within the protection scope of this application.

[0030] Preferably, a sealing ring 18 is provided on the bottom wall of the fixing frame 13, and the inner ring of the sealing ring 18 is rotatably matched with the outer surface of the rotating shaft.

[0031] The lower surface of the vacuum platform 6 is fixedly connected to the output end of the first rotary motor 7, and the first rotary motor 7 is installed on the base 1. After the ink coating of the long side of the battery cell 5 is completed, the vacuum platform 6 is driven by the first rotary motor 7 to rotate 90°, and the electric telescopic rod 2 is used to drive the roller motion device to move in reverse, so as to facilitate further rolling ink on the short side of the battery cell 5. It should be noted that the present application can also cooperate with other workstations to roll ink on the short side of the battery cell 5. The present application does not make specific restrictions on the method of rolling ink on the short side of the battery cell 5, which is within the protection scope of the present application.

[0032] In summary, the roller motion device of the present application repeatedly moves back and forth along a fixed walking path. The path is designed according to the two sides and four chamfered shapes of the battery cell 5. The printing area of ​​the roller printing is controlled by the walking path of the roller 14 to ensure the consistency and uniformity of the printing path. The roller motion device is designed so that the long side and short side of the battery cell 5 are adjustable. The short side is adjustable, and the feed amount of ink wrapped around the edge of the battery cell 5 can be controlled, and the ink thickness is controlled by the scraper 17 and the walking speed of the roller 14.

[0033] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the utility model.

[0034] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "illustrative embodiments", "examples", "specific examples", or "some examples" means that the specific features, structures, materials, or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the utility model. In this specification, the schematic expressions of the above terms do not necessarily refer to the same embodiment or example.

[0035] Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments. Mentioning "embodiment" in this article means that the specific features, structures or characteristics described in conjunction with the embodiment may be included in at least one embodiment of the present embodiment application. The appearance of this phrase in various positions in the specification is not necessarily the same embodiment, nor is it an independent or alternative embodiment that is mutually exclusive with other embodiments. It can be explicitly and implicitly understood by those skilled in the art that the embodiments described herein can be combined with other embodiments. Based on the embodiments in this application, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of this application.

[0036] Although the embodiments of the present invention have been shown and described, those skilled in the art will appreciate that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the claims and their equivalents.

Claims

1. An ink rolling device capable of wrapping the edge of a battery cell with ink, characterized in that: The invention comprises a base (1), wherein roller motion devices are symmetrically arranged above the base (1), and battery cells (5) are placed between the roller motion devices. The roller motion devices comprise a guide rail (3), wherein both ends of the guide rail (3) are bent toward the battery cells (5) so that both ends of the guide rail (3) form chamfered contour structures adapted to the chamfers at the four corners of the battery cells (5). A rack (4) is arranged on the guide rail (3), wherein the rack (4) is meshingly connected with a gear (11), wherein the inner ring of the gear (11) is interference-fitted with a rotating shaft, wherein the bottom end of the rotating shaft is fixedly connected to the output end of a second rotating motor (10), wherein the side of the second rotating motor (10) is connected to a pulley (12) via a connecting rod, wherein the pulley (12) is rollingly fitted with a slide groove provided on the guide rail (3), wherein the top end of the rotating shaft is fixedly connected to a roller (14), and a rubber layer (15) is arranged on the outer side of the roller (14).

2. The ink rolling printing device capable of wrapping the edge of a battery cell with ink according to claim 1, characterized in that: The second rotating motor (10) is mounted on a connecting plate (8), the connecting plate (8) being in a [] shape, one end of the connecting plate (8) away from the second rotating motor (10) being fixedly connected to a fixing frame (13), the upper end of the rotating shaft being rotatably connected to a bearing (19) provided on the fixing frame (13) and then connected to the roller (14), the roller (14) being provided in the fixing frame (13).

3. The ink rolling printing device capable of wrapping the edge of a battery cell with ink according to claim 2, characterized in that: The lower surface of the connecting plate (8) is provided with a universal wheel (9), and the universal wheel (9) is in rolling engagement with the upper surface of the base (1).

4. The ink rolling printing device capable of wrapping the edge of a battery cell with ink according to claim 2, characterized in that: A sealing ring (18) is provided on the bottom wall of the fixed frame (13), and the inner ring of the sealing ring (18) is rotatably matched with the outer surface of the rotating shaft.

5. The ink rolling printing device capable of wrapping the edge of a battery cell with ink according to claim 2, characterized in that: A nozzle (16) is provided on the side wall of the fixed frame (13), and the nozzle (16) is connected to the ink storage device via a connecting hose. A scraper (17) is also provided on the side wall of the fixed frame (13), and the front end of the scraper (17) is gap-matched with the outer surface of the rubber layer (15).

6. The ink rolling printing device capable of wrapping the edge of a battery cell with ink according to claim 1, characterized in that: The battery cell (5) is placed on a vacuum platform (6), and an air extraction hole (61) is provided on the vacuum platform (6).

7. The ink rolling printing device capable of wrapping the edge of a battery cell with ink according to claim 6, characterized in that: The lower surface of the vacuum platform (6) is fixedly connected to the output end of a first rotating motor (7), and the first rotating motor (7) is mounted on the base (1).

8. The ink rolling printing device capable of wrapping the edge of a battery cell with ink according to claim 1, characterized in that: One end of the guide rail (3) away from the battery sheet (5) is connected to the telescopic end of the electric telescopic rod (2), and the electric telescopic rod (2) is mounted on the base (1).

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