Battery piece screen printing device

Abstract

The utility model discloses a battery piece screen printing device, and belongs to the technical field of solar battery production. The battery piece screen printing device comprises a lifting mechanism and a screen printing mechanism, wherein the lifting mechanism comprises a lifting driving end; the mounting plate is arranged on the lifting driving end; the screen printing mechanism is mounted on the mounting plate and close to the first end of the mounting plate, and the screen printing mechanism is used for performing screen printing on the battery piece below the screen printing mechanism; the balancer is mounted at the second end of the mounting plate, the first end of the mounting plate and the second end of the mounting plate are located on the two sides of the lifting driving end correspondingly, and the balancer is used for applying vertical downward force to the second end of the mounting plate so as to balance the gravity applied to the first end of the mounting plate by the screen printing mechanism; in this way, the balancer can balance falling deflection of the mounting plate caused by the screen printing mechanism, it can be guaranteed that the mounting plate and the screen printing mechanism are stably horizontal, and then the printing quality of battery pieces is guaranteed.

Description

Technical Field

[0001] The embodiments of this application relate to the field of solar cell manufacturing technology, and more specifically, this application relates to a screen printing device for solar cells. Background Technology

[0002] During the production of battery modules, conductive materials need to be printed on the surface of the battery cells to form grid lines. Typically, a screen printing mechanism is set up on one side of the printing table that carries and transports the battery cells. The screen printing mechanism is usually mounted on a structure such as a cantilever / plate, and it is usually installed on the side of the cantilever / plate that can extend directly above the printing table to facilitate printing on the battery cells on the printing table. After printing is completed, the printing table unloads the printed battery cells.

[0003] The aforementioned screen printing mechanism results in a significant amount of weight being placed on one side of the cantilever / plate structure (such as the screen printing mechanism). Furthermore, since the connection between the cantilever / plate and the machine is only a single set of screws, this can easily cause the cantilever / plate structure to sag and deflect on that side, stretching and deforming the screws. This leads to the screen printing mechanism tilting relative to the battery surface, thereby affecting the printing quality of the battery cells. Utility Model Content

[0004] This application aims to address at least one of the technical problems existing in the prior art. To this end, the present invention provides a screen printing device for battery cells, ensuring that the screen printing mechanism is stably positioned horizontally, thereby ensuring high-quality and efficient printing on battery cells.

[0005] To solve the above problems, the technical solution adopted in this application is as follows:

[0006] This application provides an example of a screen printing apparatus for battery cells, the apparatus comprising:

[0007] The lifting mechanism includes a lifting drive end;

[0008] Mounting plate, the mounting plate is set on the lifting drive end;

[0009] A screen printing mechanism, mounted on a mounting plate and near its first end, is used to perform screen printing on the battery cells located below it; and,

[0010] The balancer is installed at the second end of the mounting plate. The first end and the second end of the mounting plate are located on both sides of the lifting drive end. The balancer is used to apply a vertically downward force to the second end of the mounting plate to balance the gravity applied by the screen printing mechanism to the first end of the mounting plate.

[0011] The battery cell screen printing device provided in this application has a mounting plate that is driven by a lifting mechanism to achieve height adjustment. The screen printing mechanism and the balancer are both mounted on the mounting plate, with the screen printing mechanism near the first end of the mounting plate and the balancer near the second end of the mounting plate. The first end and the second end are opposite ends. Therefore, the balancer can balance the downward deflection of the mounting plate caused by the screen printing mechanism, which helps to ensure that the mounting plate is on a horizontal plane, thereby ensuring the printing quality of the battery cells.

[0012] In some instances, the lifting mechanism includes a support base and two lifting modules mounted opposite each other on both sides of the support base. The mounting plate has a first side and a second side opposite each other. The first side is connected to the drive end of one lifting module, and the second side is connected to the drive end of the other lifting module.

[0013] By using two lifting modules spaced apart on both sides of the mounting plate, the lifting of the mounting plate can be achieved more stably, thereby driving the screen printing mechanism to lift.

[0014] In some instances, the balancer is at least one electromagnetic balancer, with one end connected to the second end of the mounting plate and the other end connected to the support base. The electromagnetic balancer balances the gravity applied to the first end of the mounting plate by the screen printing mechanism based on electromagnetic force.

[0015] The balancer is an electromagnetic balancer, which can flexibly adjust the balance effect based on electromagnetic force.

[0016] In some instances, the electromagnetic balancer includes a permanent magnet and an electromagnetic coil arranged opposite each other, one of which is mounted on a mounting plate and the other is mounted on a support; or, the electromagnetic balancer includes two electromagnetic coils arranged opposite each other, one of which is mounted on a mounting plate and the other on a support.

[0017] The relative arrangement of the permanent magnet and the electromagnetic coil creates a strong magnetic attraction after being energized, which helps to balance the downward deflection of the mounting plate caused by the screen printing mechanism; the two electromagnetic coils achieve the same effect.

[0018] In some instances, the balancer is a mechanical balancer, which includes an elastic tension member, one end of which is connected to the second end of a mounting plate and the other end of which is connected to a support base, and a counterweight assembly is detachably connected to the second end of the mounting plate; or, the mechanical balancer includes two opposing permanent magnets, one of which is mounted on the mounting plate and the other of which is mounted on the support base.

[0019] The mechanical balancer uses mechanical force to counteract the downward deflection of the screen printing mechanism on the mounting plate. This mechanical force can be tension, pressure, elasticity, gravity, magnetism, etc. In this example, the counterweight assembly is detachably connected to the second end for easy replacement and adjustment. Adjusting the counterweight assembly at the second end according to the downward deflection will restore the screen printing mechanism and mounting plate to a horizontal position.

[0020] In some examples, the cell screen printing apparatus also includes a printing table for receiving the cells. The screen printing mechanism includes a screen module and a squeegee module. The screen module is disposed on the lower surface of the mounting plate, and the squeegee module is disposed on the upper surface of the mounting plate. The printing table can move below the screen module, and when the cell on the printing table is directly below the screen module, the squeegee module scrubs the screen module to print the cell.

[0021] During the movement of the printing table, the battery cells are loaded and unloaded. When the printing table receives the battery cells and moves directly below the screen module, the actions of the squeegee module and the screen module work together to achieve the printing of the battery cells.

[0022] In some instances, the cell screen printing apparatus also includes two printing tables that move alternately directly below the screen module.

[0023] The alternating movement of the two printing tables allows one printing table to print cells while the other loads them. After cell printing is complete, the printing table that has finished printing moves out from directly under the screen module, while the loading table moves to directly under the screen module to print cells. This arrangement helps to provide a consistent printing rhythm for the cells.

[0024] In other examples, the battery cell screen printing apparatus also includes a turntable and a turntable drive for rotating the turntable. At least two printing tables are equally spaced along the edge of the turntable. When the turntable is driven to rotate, each printing table moves sequentially to the area directly below the screen module.

[0025] The rotation of the turntable drives the movement of the printing table, which allows one printing table to print battery cells while another printing table loads the battery cells. After the battery cell printing is completed, the printing table that has finished printing moves out from directly under the screen module, while the printing table that has finished loading moves to directly under the screen module to print the battery cells. This arrangement helps to provide a printing rhythm for the battery cells.

[0026] In some examples, the screen printing mechanism includes two screen printing modules and two squeegee modules. The printing table is used to receive at least one set of battery cells, each set including two battery cells. The two squeegee modules are arranged on the upper surface of the mounting plate in a one-to-one correspondence with the two screen printing modules. The two squeegee modules cooperate with the two screen printing modules to achieve simultaneous printing of a set of battery cells on the printing table.

[0027] By using two screen printing modules and two squeegee modules, two battery cells can be printed simultaneously, improving the printing efficiency of batch battery cells.

[0028] In some examples, the printing table holds four battery cells, which are arranged sequentially along the moving path of the printing table. Two screen modules correspond to two battery cells that are spaced apart from each other, with a gap of one battery cell between the two spaced-apart battery cells. After the first set of battery cells is printed simultaneously, the printing table moves the two unprinted battery cells directly under the two screen modules and performs a second simultaneous printing.

[0029] When the printing table receives four battery cells, the two screen printing modules and the two squeegee modules print on two spaced-apart battery cells at a time. In this way, the printing of four battery cells can be completed in two battery cell printing operations.

[0030] In some instances, the cell screen printing device also includes a connecting plate for connecting the mounting plate and the lifting drive end.

[0031] The mounting plate is connected to the lifting drive end via a connecting plate, which provides more stable support for the mounting plate and allows for smooth lifting and lowering when driven by the lifting mechanism. Attached Figure Description

[0032] Figure 1 This is a schematic diagram of the structure of a battery cell screen printing device provided in an embodiment of this application;

[0033] Figure 2 A schematic diagram of the installation and cooperation of the lifting mechanism, mounting plate, and screen printing mechanism of the battery cell screen printing device provided in the embodiments of this application from a first-view perspective;

[0034] Figure 3 A schematic diagram of the installation and cooperation of the lifting mechanism, mounting plate, and screen printing mechanism of the battery cell screen printing device provided in the embodiments of this application from a second perspective;

[0035] Figure 4 A third-view diagram showing the screen printing mechanism mounted on the mounting plate;

[0036] Figure 5 A fourth-view diagram showing the screen printing mechanism mounted on the mounting plate;

[0037] Figure 6 A schematic diagram showing a printing table positioned near the cell conveying mechanism, supporting four cells.

[0038] In the picture:

[0039] 100. Lifting mechanism; 110. Support base; 120. Lifting module;

[0040] 200, Mounting plate; 210, First end; 220, Second end;

[0041] 300. Screen printing mechanism; 310. Screen printing module; 311. First screen printing module; 312. Second screen printing module; 320. Squeegee module; 321. First squeegee module; 322. Second squeegee module;

[0042] 400. Printing table; 410. First printing table; 420. Second printing table;

[0043] 500. Balancer; 510. First balancer; 520. Second balancer;

[0044] 600. Connecting plate; 700. Cell conveying mechanism;

[0045] 810, First cell; 820, Second cell; 830, Third cell; 840, Fourth cell. Detailed Implementation

[0046] The technical solutions of the embodiments of this disclosure will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this disclosure. All other embodiments obtained by those skilled in the art based on the embodiments of this disclosure without creative effort are within the scope of protection of this disclosure.

[0047] like Figures 1 to 6 As shown in the embodiment of this application, a screen printing apparatus for battery cells is provided. The apparatus includes a lifting mechanism 100, a mounting plate 200, a screen printing mechanism 300, and a balancer 500. The lifting mechanism 100 has a lifting drive end. The mounting plate 200 is disposed on the lifting drive end to achieve height adjustment by the drive of the lifting mechanism 100. The screen printing mechanism 300 is mounted on the mounting plate 200 and close to the first end 210 of the mounting plate 200. The screen printing mechanism 300 is used to perform screen printing on battery cells located below the screen printing mechanism 300. The balancer 500 is mounted on the second end 220 of the mounting plate 200. The first end 210 and the second end 220 of the mounting plate 200 are respectively located on both sides of the lifting drive end. The balancer 500 is used to apply a vertically downward force to the second end 220 of the mounting plate 200. This vertically downward force can balance the gravity applied by the screen printing mechanism 300 to the first end 210 of the mounting plate 200.

[0048] The battery cell screen printing apparatus provided in this application has a mounting plate 200 that is height-adjustable by a lifting mechanism 100. The screen printing mechanism 300 and the balancer 500 are both mounted on the mounting plate 200. The screen printing mechanism 300 is close to the first end 210 of the mounting plate 200, and the balancer 500 is close to the second end 220 of the mounting plate 200. The first end 210 and the second end 220 are opposite ends and are located on both sides of the lifting drive end. Therefore, the balancer 500 can balance the downward deflection of the mounting plate 200 caused by the screen printing mechanism 300, which helps to ensure that the mounting plate 200 and the screen printing mechanism 300 are relatively stable in a horizontal position, thereby ensuring the printing quality of the battery cells.

[0049] The principle by which the balancer 500 balances the mounting plate 200 can be compared with the force balance of a lever structure. In this embodiment, balance is achieved when F (the traction force of the balancer 500) * L1 (the distance from the installation position of the balancer 500 on the mounting plate 200 to the lifting drive end) and G (the gravity of the screen printing mechanism 300) * L2 (the distance from the center of gravity of the screen printing mechanism 300 to the lifting drive component) are equal.

[0050] Combination Figure 2 and Figure 3 And refer to Figure 1 As shown, in some examples, the lifting mechanism 100 includes a support base 110 and two lifting modules 120. Each lifting module 120 has a fixed end and a lifting drive end (the lifting module 120 also includes a power source, such as a motor and a lead screw structure, not shown in the figure). The two lifting modules 120 can be installed on the support base 110 at intervals through the connection between the fixed end and the support base 110, for example, on two opposite outer sides of the support base 110. The mounting plate 200 has a first side and a second side. The first side is connected to the lifting drive end of one lifting module 120, and the second side is connected to the lifting drive end of the other lifting module 120. The lifting mechanism 100 constructed in this way can more stably achieve the lifting and lowering of the mounting plate 200 by driving the mounting plate 200 through the two lifting drive ends, thereby driving the screen printing mechanism 300 to lift and lower. After the screen printing mechanism 300 descends to a suitable height, the screen printing mechanism 300 performs screen printing on the battery cells.

[0051] Continue to combine Figure 2 and Figure 3As shown, in some examples, the balancer 500 is at least one electromagnetic balancer 500. The electromagnetic balancer 500 can flexibly adjust the balancing effect based on electromagnetic force. Specifically, one end of the electromagnetic balancer 500 is connected to the second end 220 of the mounting plate 200, and the other end is connected to the support base 110. The electromagnetic balancer 500 can balance the gravity applied by the screen printing mechanism 300 to the first end 210 of the mounting plate 200 based on electromagnetic force. In specific implementations, two electromagnetic balancers 500 (such as the first electromagnetic balancer 510 and the second electromagnetic balancer 520 shown in the figure) can also be arranged at intervals at the second end 220 to make the mounting plate 200 bear force evenly and be in a more stable balanced state.

[0052] In some examples, the electromagnetic balancer 500 includes a permanent magnet and an electromagnetic coil arranged opposite each other. Specifically, the permanent magnet can be mounted on the mounting plate 200 and the electromagnetic coil can be mounted on the support base 110, or the electromagnetic coil can be mounted on the mounting plate 200 and the permanent magnet can be mounted on the support base 110. Both mounting methods are acceptable, as long as the relative arrangement of the permanent magnet and the electromagnetic coil provides a large magnetic attraction force after energization, which is used to balance the downward deflection of the screen printing mechanism 300 on the mounting plate 200. The relative distance between the permanent magnet and the electromagnetic coil can, for example, be 1mm-3mm. Alternatively, the permanent magnet can be replaced with another electromagnetic coil, i.e., two electromagnetic coils are arranged opposite each other, which can also balance the downward deflection of the screen printing mechanism 300 on the mounting plate 200.

[0053] Alternatively, the balancer 500 can also be a mechanical balancer 500. The mechanical balancer 500 balances the downward deflection of the screen printing mechanism 300 on the mounting plate 200 based on mechanical force, which can be tension, pressure, elasticity, gravity, magnetism, etc. For example, the mechanical balancer 500 includes an elastic tension member, one end of which is connected to the second end 220 of the mounting plate 200, and the other end is connected to the support base 110. Alternatively, the mechanical balancer 500 can also be a counterweight assembly, which is detachably connected to the second end 220 of the mounting plate 200. In this example, the counterweight assembly is detachably connected to the second end 220, facilitating replacement and adjustment. Adjusting the counterweight assembly at the second end 220 according to the downward deflection allows the screen printing mechanism 300 and the mounting plate 200 to return to a horizontal position. Alternatively, two permanent magnets can be arranged opposite each other, one connected to the second end 220 of the mounting plate 200 and the other connected to the support base 110, achieving the same balancing effect.

[0054] Combination Figure 1 , Figure 2 and Figure 6As shown, in some instances, the cell screen printing apparatus also includes a printing table 400 for receiving cells. Specifically, the printing table 400 is typically located adjacent to the cell conveying mechanism 700 that transports cells. The printing table 400 receives cells transferred from the cell conveying mechanism 700, and each transfer may consist of one, two, or more cells. The screen printing mechanism 300 includes a screen module 310 and a squeegee module 320. The screen module 310 is disposed on the lower surface of the mounting plate 200, and the squeegee module 320 is disposed on the upper surface of the mounting plate 200. The printing table 400 can move below the screen module 310. When the battery cell on the printing table 400 is directly below the screen module 310, the squeegee module 320 squeegees the screen module 310 to print the battery cell. Specifically, the graphic portion of the screen module 310 has mesh openings, which are pre-coated with paste. The paste is squeezed from the mesh openings by the squeegee module 320 onto the battery cell, thus completing the printing of the battery cell's grid lines. The printing table 400 loads and unloads battery cells at a certain position along its movement path. When the printing table 400 receives the battery cell and moves directly below the screen module 310, the actions of the squeegee module 320 and the screen module 310 cooperate to achieve the printing of the battery cell.

[0055] Understandably, in specific implementations of this application, the shape and structure of the mounting plate 200 and the printing table 400 are not strictly limited, as long as the printing table 400 can move the carried battery cell below the screen printing mechanism 300, and the screen printing mechanism 300 performs screen printing on the battery cell below. The battery cell screen printing device of this application is suitable for a cooperative mode in which the printing table 400 moves linearly back and forth relative to the screen printing mechanism 300, and in particular, at least two printing tables 400 can move linearly back and forth and the two printing tables 400 can move alternately below the screen printing mechanism 300. It is understood that the battery cell screen printing apparatus of this application is also applicable to a disc-type screen printing machine. Specifically, two or four printing tables 400 are distributed circumferentially on a disc-shaped turntable and are spaced apart. The turntable can rotate around its own center line, and each printing table 400 can carry a battery cell. Each printing table 400 can carry one, two, or more battery cells. When the turntable rotates, the printing tables 400 can move alternately under the screen printing mechanism 300. In this way, the screen printing mechanism 300 can sequentially perform screen printing on the battery cells carried by each printing table 400.

[0056] Therefore, based on the foregoing description, in a specific implementation of this application, the battery cell screen printing apparatus further includes two printing tables 400 (e.g., Figure 1The first printing table 410 and the second printing table 420 shown are alternately moved to the area directly below the screen module 310. This implementation of alternating movement of the two printing tables 400 facilitates the loading of battery cells by the second printing table 420 while the first printing table 410 is printing the battery cells. After the battery cells on the first printing table 410 are printed, they are moved out from directly below the screen module 310, while the second printing table 420, after loading, moves to the area directly below the screen module 310 to print the battery cells. This arrangement helps to provide a printing rhythm for the battery cells.

[0057] In other specific embodiments, the battery cell screen printing apparatus also includes a turntable and a turntable drive unit for driving the turntable to rotate. At least two printing tables 400 are evenly spaced along the edge of the turntable. When the turntable is driven to rotate, each printing table 400 moves sequentially to directly below the screen module 310. This method of moving the printing tables 400 by rotating the turntable also facilitates simultaneous battery cell printing by one printing table 400 and battery cell loading by another printing table 400. After battery cell printing is completed, the printing table 400 that has finished printing moves out from directly below the screen module 310, while the loading printing table 400 moves to directly below the screen module 310 to continue battery cell printing. This arrangement also helps to provide a consistent printing rhythm for the battery cells, and the screen printing apparatus occupies a small space. For example, when this application applies to a rotary screen printing machine, the printing table 400 is a paper roll machine mounted on the turntable. In practice, the turntable can be circular, or the printing tables 400 can be arranged in a cross or star shape relative to the center of rotation, as long as it can rotate around its own center line and drive the circumferentially distributed printing tables 400 to move sequentially to the bottom of the screen printing mechanism 300.

[0058] The following is combined Figures 2 to 5As shown, in order to improve the efficiency of screen printing in a specific implementation of this application, the screen printing mechanism 300 includes two screen printing modules 310 (e.g., the first screen printing module 311 and the second screen printing module 312 shown in the figure) and two squeegee modules 320 (e.g., the first squeegee module 321 and the first squeegee module 322 shown in the figure). The two screen printing modules 310 are disposed on the lower surface of the mounting plate 200, and the two squeegee modules 320 are disposed on the upper surface of the mounting plate 200 in a one-to-one correspondence with the two screen printing modules 310. Specifically, the first squeegee module 321 and the first screen printing module 311 are disposed correspondingly and cooperate to perform screen printing on the battery cell, and the second squeegee module 322 and the second screen printing module 312 are disposed correspondingly and cooperate to perform screen printing on the battery cell. To facilitate simultaneous screen printing by the two screen printing modules 310, the printing table 400 receives at least one set of battery cells, each set consisting of two battery cells. The first squeegee module 321 and the first screen printing module 311 work together to screen print one battery cell, while the second squeegee module 322 and the second screen printing module 312 work together to screen print the other battery cell in the same set. This achieves simultaneous printing of a set of battery cells on the printing table. In practice, the arrangement direction of the battery cells on the printing table 400 is adapted to the arrangement direction of the two screen printing modules 310, ensuring that when one battery cell is under one screen printing module 310, another battery cell is under the other screen printing module 310. In this way, by using the two screen printing modules 310 and the two squeegee modules 320, simultaneous printing of two battery cells can be achieved, improving the printing efficiency of batch battery cells.

[0059] Combination Figures 1 to 6As shown, the printing table 400 receives four battery cells (e.g., the first battery cell 810, the second battery cell 820, the third battery cell 830, and the fourth battery cell 840 shown in the diagram). The first battery cell 810, the second battery cell 820, the third battery cell 830, and the fourth battery cell 840 are arranged sequentially along the moving path of the printing table 400. Specifically, if the movement of the printing table 400 is a linear reciprocating movement, then the first battery cell 810, the second battery cell 820, the third battery cell 830, and the fourth battery cell 840 can be arranged along the linear direction of movement. However, in a rotary screen printing machine, the moving direction of the printing table 400 is along the tangent direction of the rotation of the rotary table. Therefore, the first battery cell 810, the second battery cell 820, the third battery cell 830, and the fourth battery cell 840 are arranged along this tangent direction. Two screen printing modules 310 correspond to two spaced-apart battery cells out of the four battery cells, with a space between each spaced-apart battery cell. For example, the two screen printing modules 310 can correspond one-to-one with the first battery cell 810 and the third battery cell 830, or one-to-one with the second battery cell 820 and the fourth battery cell 840. Therefore, after the first battery cell 810 and the third battery cell 830 are screen printed simultaneously using the two screen printing modules 310 for the first time, the printing table moves the unprinted second battery cell 820 and the fourth battery cell 840 directly below the two screen printing modules 310 and performs a second simultaneous printing. In this way, the printing of all four battery cells can be completed in two battery cell printing operations.

[0060] In some instances, a connecting plate 600 is configured on the first and second sides of the mounting plate 200, respectively. The connecting plate 600 is connected to the mounting plate 200 and is also connected to the lifting drive end of the lifting module 110. Specifically, the first and second sides of the mounting plate 200 are connected to the lifting drive end through the configured connecting plate 600. This configuration can provide more stable support for the mounting plate 200 and achieve smooth lifting when the lifting mechanism 100 is driven.

[0061] In the foregoing description of this application, unless otherwise expressly specified and limited, the terms "fixed," "installed," "connected," or "linked" should be interpreted broadly. For example, the term "linked" can refer to a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; or it can refer to the internal communication of two components or the interaction between two components. Therefore, unless otherwise expressly limited in this application, those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0062] Based on the above description of this application, those skilled in the art will also understand that the terms used, such as "upper," "lower," "front," "rear," "left," "right," "length," "width," "thickness," "vertical," "horizontal," "top," "bottom," "inner," "outer," "axial," "radial," "circumferential," "center," "longitudinal," "transverse," "clockwise," or "counterclockwise," are based on the orientation or positional relationship shown in the accompanying drawings of this application. They are only for the purpose of facilitating the explanation of the solution of this application and simplifying the description, and do not explicitly or implicitly suggest that the device or element involved must have the specific orientation, or be constructed and operated in a specific orientation. Therefore, the above-mentioned orientation or positional relationship terms should not be understood or interpreted as a limitation on the solution of this application.

[0063] Furthermore, the terms "first" or "second," etc., used in this application to refer to numbers or ordinal numbers are for descriptive purposes only and should not be construed as explicitly or implicitly indicating relative importance or specifying the number of indicated technical features. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this application, "multiple" means at least two, such as two, three, or more, unless otherwise explicitly specified.

[0064] While numerous embodiments of this application have been shown and described herein, it will be apparent to those skilled in the art that such embodiments are provided by way of example only. Many modifications, alterations, and alternatives will arise for those skilled in the art without departing from the spirit and intent of this application. It should be understood that various alternatives to the embodiments of this application described herein may be employed in the practice of this application. The appended claims are intended to define the scope of protection of this application and therefore cover equivalents or alternatives within the scope of these claims.

Claims

1. A screen printing device for battery cells, characterized in that, The battery cell screen printing device includes: A lifting mechanism, wherein the lifting mechanism includes a lifting drive end; Mounting plate, which is disposed on the lifting drive end; A screen printing mechanism, mounted on the mounting plate and near a first end of the mounting plate, is used to perform screen printing on battery cells located below the screen printing mechanism; and, A balancer is installed at the second end of the mounting plate, with the first end and the second end of the mounting plate located on opposite sides of the lifting drive end. The balancer is used to apply a vertically downward force to the second end of the mounting plate to balance the gravity applied by the screen printing mechanism to the first end of the mounting plate.

2. The battery cell screen printing device according to claim 1, characterized in that, The lifting mechanism includes a support base and two lifting modules. The two lifting modules are mounted opposite each other on both sides of the support base. The mounting plate has a first side and a second side opposite each other. The first side is connected to the drive end of one of the lifting modules, and the second side is connected to the drive end of the other lifting module.

3. The battery cell screen printing device according to claim 2, characterized in that, The balancer is at least one electromagnetic balancer, one end of which is connected to the second end of the mounting plate and the other end of which is connected to the support base. The electromagnetic balancer balances the gravity exerted by the screen printing mechanism on the first end of the mounting plate based on electromagnetic force.

4. The battery cell screen printing device according to claim 3, characterized in that, The electromagnetic balancer includes a permanent magnet and an electromagnetic coil arranged opposite each other, one of which is mounted on the mounting plate, and the other is mounted on the support base; or, The electromagnetic balancer includes two electromagnetic coils arranged opposite each other, one of which is mounted on the mounting plate and the other of which is mounted on the support.

5. The battery cell screen printing device according to claim 2, characterized in that, The balancer is a mechanical balancer, which includes an elastic tension member or a counterweight assembly. One end of the elastic tension member is connected to the second end of the mounting plate, and the other end is connected to the support base. The counterweight assembly is detachably connected to the second end of the mounting plate; or... The mechanical balancer includes two permanent magnets arranged opposite each other, one of which is mounted on the mounting plate and the other of which is mounted on the support base.

6. The battery cell screen printing apparatus according to claim 1, characterized in that, The battery cell screen printing device also includes a printing table for receiving battery cells. The screen printing mechanism includes a screen module and a squeegee module. The screen module is disposed on the lower surface of the mounting plate, and the squeegee module is disposed on the upper surface of the mounting plate. The printing table can move below the screen module. When the battery cell on the printing table is directly below the screen module, the squeegee module scrapes the screen module to print on the battery cell.

7. The battery cell screen printing apparatus according to claim 6, characterized in that, The battery cell screen printing device further includes two printing tables, which alternately move to be directly below the screen module; or... The battery cell screen printing device also includes a turntable and a turntable drive unit for driving the turntable to rotate. At least two printing tables are equally spaced along the edge of the turntable. When the turntable is driven to rotate, each printing table moves sequentially to the area directly below the screen module.

8. The battery cell screen printing apparatus according to claim 6, characterized in that, The screen printing mechanism includes two screen printing modules and two squeegee modules. The printing table is used to receive at least one set of battery cells, each set including two battery cells. The two squeegee modules are arranged on the upper surface of the mounting plate in a one-to-one correspondence with the two screen printing modules. The two squeegee modules cooperate with the two screen printing modules to achieve simultaneous printing of a set of battery cells on the printing table.

9. The battery cell screen printing apparatus according to claim 8, characterized in that, The printing table holds four battery cells, which are arranged sequentially along the moving path of the printing table. The two screen printing modules correspond to two battery cells that are spaced apart from each other, and there is a gap of one battery cell between the two spaced-apart battery cells. After the first set of battery cells is printed simultaneously, the printing table moves the two unprinted battery cells to directly below the two screen printing modules and performs a second simultaneous printing.

10. The battery cell screen printing apparatus according to any one of claims 1 to 9, characterized in that, The battery cell screen printing device also includes a connecting plate, which is used to connect the mounting plate and the lifting drive end.

Images