Coating transfer printing equipment and battery production line

Abstract

The utility model relates to coating transfer printing equipment and a battery production line. The coating transfer printing equipment comprises a transfer printing module, a coating module, an unwinding module, a winding module and a drying oven module, the transfer printing module comprises an unwinding assembly, a transfer printing mechanism and a winding assembly, the unwinding assembly is used for unwinding a first film material to the transfer printing mechanism, and the winding assembly is used for winding the first film material passing through the transfer printing mechanism; the unwinding module is used for unwinding a first membrane material to the coating module, the drying oven module is used for drying the first membrane material passing through the coating module, and the winding module is used for winding the first membrane material passing through the drying oven module; wherein the unwinding module, the coating module, the transfer printing module and the winding module are sequentially arranged in the first direction, and the drying oven modules are arranged on one side of the transfer printing module side by side, so that the unwinding assembly can unwind a second film material to the coating module and / or the drying oven modules to isolate a first film material from the coating module and / or the drying oven modules. The coating transfer printing equipment provided by the utility model is high in integration level, high in operation efficiency and small in occupied space.

Description

Technical Field

[0001] This utility model relates to the technical field of catalyst coating film production equipment, and more specifically, to a coating transfer printing device and a battery production line. Background Technology

[0002] Currently, roll-to-roll CCM (Catalyst-Coated Membrane) production equipment on the market mainly involves directly coating the proton exchange membrane (PEM) with a coating machine, or coating it onto a substrate and then transferring the coating from the substrate to the PEM using a transfer machine. This type of equipment has low integration, requiring separate waiting times for the cathode and anode transfer films to be coated before transferring them to the PEM. This not only leads to low production efficiency but also requires a significant amount of space due to the dispersed equipment. Utility Model Content

[0003] One objective of this invention is to provide a coating transfer printing device and a battery production line that can at least solve one of the problems in the background art.

[0004] According to a first aspect of the present invention, a coating transfer printing device is provided, comprising:

[0005] A transfer module, comprising an unwinding assembly, a transfer mechanism, and a rewinding assembly, wherein the unwinding assembly is used to unwind a first film material to the transfer mechanism, and the rewinding assembly is used to rewind the first film material that has passed through the transfer mechanism.

[0006] The system includes a coating module, an unwinding module, a rewinding module, and an oven module. The unwinding module is used to unwind the first film material to the coating module. The oven module is used to dry the first film material that has passed through the coating module. The rewinding module is used to rewind the first film material that has passed through the oven module.

[0007] The unwinding module, coating module, transfer module, and rewinding module are arranged sequentially along a first direction, and the oven module is arranged side by side on one side of the transfer module, so that the unwinding assembly can also unwind a second film material to the coating module and / or the oven module to isolate the first film material from the coating module and / or the oven module.

[0008] Optionally, the first membrane material is a proton exchange membrane, a cathode transfer membrane, or an anode transfer membrane, and the transfer mechanism is also capable of peeling off the proton exchange membrane, cathode transfer membrane, and anode transfer membrane after hot-press transfer.

[0009] The unwinding assembly includes a first unwinding mechanism, a second unwinding mechanism, and a third unwinding mechanism, wherein the first unwinding mechanism, the second unwinding mechanism, and the third unwinding mechanism are respectively used to unwind the proton exchange membrane, the cathode transfer membrane, and the anode transfer membrane to the transfer mechanism in sequence.

[0010] The winding assembly includes a first winding mechanism, a second winding mechanism, and a third winding mechanism. The first winding mechanism, the second winding mechanism, and the third winding mechanism are respectively used to wind up the proton exchange membrane, the cathode transfer membrane, and the anode transfer membrane that have been transferred and peeled off by the transfer mechanism.

[0011] Optionally, along the first direction, the first unwinding mechanism is located on the side of the transfer mechanism closer to the winding module, and the second unwinding mechanism, the third unwinding mechanism, the first winding mechanism, the second winding mechanism, and the third winding mechanism are all located on the side of the transfer mechanism closer to the coating module.

[0012] The winding assembly further includes a fourth winding mechanism and a first main drive roller. The first main drive roller is disposed between the first unwinding mechanism and the transfer mechanism and is used to peel off the back film of the first film material unwound by the first unwinding mechanism. The fourth winding mechanism is used to wind up the back film.

[0013] Optionally, the unwinding assembly further includes a fourth unwinding mechanism and a third main drive roller, both of which are located on the side of the transfer mechanism closer to the coating module.

[0014] The fourth unwinding mechanism is used to unwind the second film material, the third main drive roller is used to cover the second film material onto the transfer surface of the proton exchange membrane peeled off by the transfer mechanism, and the first winding mechanism is used to wind up the proton exchange membrane covered with the second film material.

[0015] Optionally, the coating module includes a coating roller and a coating die, the coating roller being used to support the unwinding module to unwind the first film material, and the coating die being used to coat the first film material on the coating roller;

[0016] The fourth unwinding mechanism can also unwind the second film material onto the coating roller to isolate the first film material from the coating roller, and the first winding mechanism can also wind the second film material that has passed through the coating roller.

[0017] Optionally, the coating module further includes a visual positioning element, which is disposed below the coating die head and is used to detect the alignment of the first film material during double-sided coating.

[0018] Optionally, the unwinding module includes a fifth unwinding mechanism, a fifth winding mechanism, and a fourth main drive roller;

[0019] The fifth unwinding mechanism is used to unwind the first film material onto the coating roller, the fourth main drive roller is used to peel off the back film from the first film material unwound by the fifth unwinding mechanism, and the fifth winding mechanism is used to wind up the back film.

[0020] Optionally, the second unwinding mechanism or the third unwinding mechanism is further used to unwind a second film material, which is used to isolate the first film material passed through the coating module from the oven module;

[0021] The winding module includes a sixth winding mechanism and a fifth main drive roller. The fifth main drive roller is used to coat the second film material onto the first film material that has passed through the oven module. The sixth winding mechanism is used to wind up the first film material covered with the second film material.

[0022] Optionally, the winding assembly also includes a first vision inspection element and a second vision inspection element;

[0023] The first visual inspection device is used to detect the amount of coating residue on the cathode transfer film after being transferred by the transfer mechanism, and the second visual inspection device is used to detect the amount of coating residue on the anode transfer film after being transferred by the transfer mechanism.

[0024] Optionally, the unwinding module includes a fifth unwinding mechanism and a first load detection element. The fifth unwinding mechanism is used to unwind the first film material to the coating module, and the first load detection element is used to detect the coating load of the first film material unwound by the fifth unwinding mechanism.

[0025] The winding module includes a sixth winding mechanism and a second load detection device. The sixth winding mechanism is used to wind up the first film material after passing through the oven module, and the second load detection device is used to detect the coating load of the film to be processed after passing through the oven module.

[0026] Optionally, the winding module further includes a third vision detection element, which is used to detect the coating amount of the first film material after passing through the coating module.

[0027] According to a second aspect of the present invention, a battery production line is provided, comprising the coating and transfer equipment described in the first aspect.

[0028] One technical advantage of this invention is that by simultaneously incorporating a transfer module, a coating module, and an oven module into the equipment, the transfer process can be performed directly after the first film material is coated in battery production, eliminating the need for transferring the coated roll material. This improves the equipment's integration and production efficiency. Furthermore, by rationally arranging the transfer module, coating module, oven module, unwinding module, and rewinding module, the overall equipment occupies less space and can meet more process requirements.

[0029] Other features and advantages of the present invention will become clear from the following detailed description of exemplary embodiments of the present invention with reference to the accompanying drawings. Attached Figure Description

[0030] The accompanying drawings, which form part of this specification, illustrate embodiments of the present invention and, together with the specification, serve to explain the principles of the present invention.

[0031] Figure 1 This is a schematic diagram of the spatial arrangement of a coating transfer printing device provided by this utility model.

[0032] Figure 2 This is a schematic diagram of the coating process provided by this utility model (coating of cathode and anode transfer films or single-sided direct coating of proton exchange membrane).

[0033] Figure 3 This is a schematic diagram of the transfer process provided by this utility model.

[0034] Figure 4 This is a schematic diagram of the double-sided direct coating process for proton exchange membranes provided by this utility model.

[0035] Explanation of reference numerals in the attached figures:

[0036] 1. Web alignment sensor; 2. Tension roller; 3. Fourth winding mechanism; 4. First unwinding mechanism; 5. Tape splicing platform; 6. Antistatic assembly; 7. First main drive roller; 8. Transfer mechanism; 9. Second unwinding mechanism; 10. Third unwinding mechanism;

[0037] 11. Second vision inspection component; 12. First vision inspection component; 13. Fourth vision inspection component; 15. Fifth vision inspection component; 14. Third winding mechanism; 16. Second winding mechanism; 18. Fourth unwinding mechanism; 19. First winding mechanism;

[0038] 20. Coating roller; 21. Vision positioning device; 22. Coating die head; 23. Fifth winding mechanism; 24. First load detection device; 25. Fifth unwinding mechanism; 26. Third vision detection device; 27. Second load detection device; 28. Sixth winding mechanism; 29. ​​Oven assembly;

[0039] 30. First membrane material; 301. Proton exchange membrane; 302. Cathode transfer membrane; 303. Anode transfer membrane; 31. Second membrane material; 311. Protective film; 312. Supporting film; 32. Backing film;

[0040] 100. Transfer module; 200. Coating module; 300. Unwinding module; 400. Rewinding module; 500. Oven module. Detailed Implementation

[0041] Various exemplary embodiments of the present invention will now be described in detail with reference to the accompanying drawings. It should be noted that, unless otherwise specifically stated, the relative arrangement, numerical expressions, and values ​​of the components and steps set forth in these embodiments do not limit the scope of the present invention.

[0042] The following description of at least one exemplary embodiment is merely illustrative and is in no way intended to limit the invention or its application or use.

[0043] Technologies and equipment known to those skilled in the art may not be discussed in detail, but where appropriate, such technologies and equipment should be considered part of the specification.

[0044] In all the examples shown and discussed herein, any specific values ​​should be interpreted as merely exemplary and not as limitations. Therefore, other examples of exemplary embodiments may have different values.

[0045] It should be noted that similar labels and letters in the following figures indicate similar items; therefore, once an item is defined in one figure, it does not need to be discussed further in subsequent figures.

[0046] like Figure 1 As shown in Figure 4, according to one aspect of this utility model, a coating transfer printing device is provided, comprising: a transfer module 100, a coating module 200, an unwinding module 300, a rewinding module 400, and an oven module 500. The transfer module 100 includes an unwinding assembly, a transfer mechanism 8, and a rewinding assembly. The unwinding assembly is used to unwind a first film material 30 to the transfer mechanism 8, and the rewinding assembly is used to rewind the first film material 30 passed through the transfer mechanism 8. The unwinding module 300 is used to unwind the first film material 30 to the coating module 200, and the oven module 500 is used for... The first film material 30, which has passed through the coating module 200, is dried, and the winding module 400 is used to wind up the first film material 30, which has passed through the oven module 500. The unwinding module 300, coating module 200, transfer module 100 and winding module 400 are arranged sequentially along the first direction, and the oven module 500 is arranged side by side on one side of the transfer module 100, so that the unwinding assembly can also unwind the second film material 31 to the coating module 200 and / or the oven module 500, so as to isolate the first film material 30 from the coating module 200 and / or the oven module 500.

[0047] Specifically, in this embodiment, the coating transfer equipment includes a transfer module 100, a coating module 200, an unwinding module 300, a rewinding module 400, and an oven module 500, such as... Figure 1 As shown. The coating module 200 applies a catalyst to the first film material 30 unwound by the unwinding module 300. The coated first film material 30 is then dried by the drying oven module 500, and finally wound up by the winding module 400. (Refer to...) Figure 2In battery production, the first film material 30 can be a proton exchange membrane 301, a cathode transfer membrane 302, or an anode transfer membrane 303. The corresponding coating process can achieve single-sided direct coating of the proton exchange membrane 301, and coating of the cathode transfer membrane 302 or the anode transfer membrane 303. Furthermore, by controlling the coating method of the coating module 200, it is also possible to achieve intermittent coating or continuous coating of the first film material 30. The oven module 500 can be assembled from one or more oven components 29 according to actual needs, allowing it to adapt to different equipment sizes.

[0048] Based on the fact that the transfer module 100 is located in the unwinding module 300, coating module 200, transfer module 100, and rewinding module 400 arranged sequentially along the first direction, in some embodiments, the first film material 30 after coating and rewinding (e.g., the coated cathode transfer film 302 and / or anode transfer film 303) can be wound onto the unwinding assembly in the transfer module 100. Then, the catalyst coating on the cathode transfer film 302 and anode transfer film 303 can be transferred to both sides of the proton exchange membrane 301 via the transfer mechanism 8. Alternatively, only the catalyst coating on the cathode transfer film 302 or anode transfer film 303 can be transferred to one side of the proton exchange membrane 301. Finally, the rewinding assembly rewinds the transferred proton exchange membrane 301, cathode transfer film 302, or anode transfer film 303 respectively to meet actual process requirements. (Refer to...) Figure 3 The winding and unwinding assemblies can be configured in two, three, or four sets, depending on actual needs. These sets are used for the proton exchange membrane 301, cathode transfer membrane 302, and / or anode transfer membrane 303 before unwinding and transfer, respectively, and for the proton exchange membrane 301, cathode transfer membrane 302, and / or anode transfer membrane 303 after winding and transfer. This invention does not impose any limitations on these sets. Furthermore, during transfer, the proton exchange membrane 301 is typically covered with a backing film 32, which can be peeled off before transfer. This peeling can be achieved by incorporating a peeling mechanism within the transfer module 100, without affecting the operation of the device.

[0049] Furthermore, in some other embodiments, the coating transfer equipment provided by this utility model can also realize double-sided direct coating of the proton exchange membrane 301, wherein the single-sided direct coating process can be referred to Figure 2 After single-sided coating is completed, the rewound proton exchange membrane 301 can be rewound to the unwinding module 300, and then the uncoated side of the proton exchange membrane 301 can be coated with catalyst through the coating module 200 to achieve double-sided direct coating. (See reference) Figure 4Since the proton exchange membrane 301 is coated with a back film 32, the back film 32 of the proton exchange membrane 301 also needs to be peeled off before coating the second side of the proton exchange membrane 301. The peeling of the back film 32 of the proton exchange membrane 301 can be achieved by adding a peeling mechanism to the unwinding module 300 or the coating module 200, without affecting the operation of the entire equipment. In addition, when coating the second side of the proton exchange membrane 301, a protective film 311 can be placed between the coating module 200 and the proton exchange membrane 301 to prevent the coated first side of the proton exchange membrane 301 and the coating layer from contacting the metal parts of the coating module 200, thereby improving the quality of the double-sided direct coating of the proton exchange membrane 301.

[0050] In this embodiment, based on the positional relationship of each module, the unwinding assembly in the transfer module 100 can also unwind the second film material 31 to the coating module 200 and / or the oven module 500 to isolate the first film material 30 from the coating module 200 and / or the oven module 500. That is, during the coating process in the coating module 200, the transfer module 100 can configure the unwinding assembly to unwind the second film material 31 (e.g., protective film 311) into the coating module 200, allowing the proton exchange membrane 301 and its coating layer to directly contact the metal parts in the coating module 200, such as the coating roller 20; alternatively, the unwinding assembly can unwind the second film material 31 (e.g., base film 312) into the oven module 500 to prevent the bottom of the coated first film material 30 from directly contacting the oven module 500, thus improving the overall coating quality of the equipment. The type of the second film material 31 can be adapted according to actual needs, and this invention does not limit this.

[0051] As can be seen from the above embodiments, the coating and transfer equipment provided by this utility model can not only achieve coating of cathode transfer film 302 or anode transfer film 303, and single-sided or double-sided coating of proton exchange membrane 301, but also achieve transfer of catalysts on both sides of cathode transfer film 302 and anode transfer film 303, or transfer only the catalysts of cathode transfer film 302 or anode transfer film 303, thereby improving the efficiency of equipment use and reducing the space occupied by the equipment. Furthermore, through the reasonable layout of each module and the reuse of the unwinding assembly in the transfer module 100, the process quality of the first film material 30 during the coating or transfer process can be achieved, further reducing the space occupied by the equipment. In addition, due to the high degree of integration of the equipment, after coating, cathode transfer film 302 and anode transfer film 303 do not require excessive transportation; they only need to be wound onto the unwinding assembly in the transfer module 100, improving production efficiency and reducing production costs.

[0052] Optionally, such as Figures 2 to 4As shown, the first membrane material 30 is a proton exchange membrane 301, a cathode transfer membrane 302, or an anode transfer membrane 303. The transfer mechanism 8 can also peel off the proton exchange membrane 301, the cathode transfer membrane 302, and the anode transfer membrane 303 after hot-press transfer. The unwinding assembly includes a first unwinding mechanism 4, a second unwinding mechanism 9, and a third unwinding mechanism 10, which are used to unwind the proton exchange membrane 301, the cathode transfer membrane 302, and the anode transfer membrane 303 to the transfer mechanism 8 in sequence. The winding assembly includes a first winding mechanism 19, a second winding mechanism 16, and a third winding mechanism 14, which are used to wind the proton exchange membrane 301, the cathode transfer membrane 302, and the anode transfer membrane 303 transferred and peeled off by the transfer mechanism 8 in sequence.

[0053] Specifically, in this embodiment, the unwinding assembly, by providing a first unwinding mechanism 4, a second unwinding mechanism 9, and a third unwinding mechanism 10, can respectively unwind the proton exchange membrane 301, the cathode transfer film 302, and the anode transfer film 303 to the transfer mechanism 8. The transfer mechanism 8 can transfer the catalyst of the cathode transfer film 302 and / or the anode transfer film 303 to the proton exchange membrane 301, forming a proton exchange membrane 301 coated with a catalyst on one or both sides. In some embodiments, the transfer mechanism 8 transfers the transfer film using a hot press roller. The transfer mechanism 8 can also peel off the anode transfer film 303 and / or the cathode transfer film 302 on both sides of the proton exchange membrane 301 after hot pressing, so that the first winding mechanism 19, the second winding mechanism 16, and the third winding mechanism 14 in the winding assembly can respectively wind up the proton exchange membrane 301, the cathode transfer film 302, and the anode transfer film 303 after hot pressing and transfer, completing the transfer of the proton exchange membrane 301. (Refer to...) Figure 3 .

[0054] In the above embodiments, each unwinding mechanism typically includes a take-up roller or an unwinding roller for taking up or unwinding the first film material 30; a web-correction sensor 1 for detecting the unwinding position of the first film material 30 (proton exchange membrane 301, cathode and anode transfer film 303); multiple tension rollers 2 to ensure that the first film material 30 can be smoothly unwound to a predetermined position (e.g., transfer mechanism 8) or wound to a predetermined position (e.g., different take-up rollers); and a tape-connecting platform 5, an antistatic assembly 6, etc., to ensure the smooth operation of unwinding and winding.

[0055] The transfer module 100 provided by this utility model can realize three-in-one hot press transfer or two-in-one hot press transfer. Different hot roller pressing methods can be used to achieve continuous coating, intermittent coating, or multi-row coating. Continuous coating does not require opening and closing rollers, while intermittent coating requires alignment and opening / closing rollers. Each winding or unwinding mechanism can be automatically controlled to match the entire equipment, improving the automation level. Furthermore, it can increase the equipment's operating rate and reduce total energy consumption when production capacity requirements are low. Coating typically refers to directly coating the catalyst onto the proton exchange membrane 301, or coating the catalyst onto the cathode or anode transfer film, while transfer refers to transferring the catalyst coating from the cathode or anode transfer film onto the proton exchange membrane 301.

[0056] Optionally, such as Figure 3 As shown, along the first direction, the first unwinding mechanism 4 is located on the side of the transfer mechanism 8 close to the winding module 400, and the second unwinding mechanism 9, the third unwinding mechanism 10, the first winding mechanism 19, the second winding mechanism 16 and the third winding mechanism 14 are all located on the side of the transfer mechanism 8 close to the coating module 200; the winding assembly also includes a fourth winding mechanism 3 and a first main drive roller 7. The first main drive roller 7 is disposed between the first unwinding mechanism 4 and the transfer mechanism 8 and is used to peel off the back film 32 of the first film material 30 unwound by the first unwinding mechanism 4. The fourth winding mechanism 3 is used to wind up the back film 32.

[0057] Specifically, in this embodiment, since some first film materials 30, such as proton exchange membrane 301, are typically provided with a back film 32, a first main drive roller 7 and a fourth winding mechanism 3 are also provided between the first unwinding mechanism 4 and the transfer mechanism 8. During the process of the first unwinding mechanism 4 unwinding the first film material 30 to the transfer mechanism 8, the first main drive roller 7 can peel off the back film 32 of the first film material 30. The proton exchange membrane 301 after peeling off the back film 32 enters the transfer mechanism 8 and is heat-pressed and transferred through the cathode transfer film 302 and / or the anode transfer film 303. The peeled back film 32 can be wound up by the fourth winding mechanism 3. In order to facilitate winding, the fourth winding mechanism 3 can be located near the first unwinding mechanism 4. In addition, the first unwinding mechanism 4, the first main drive roller 7 and the fourth winding mechanism 3 are all located on the side of the transfer mechanism 8 away from the coating module 200, which facilitates the peeling of the back film 32 of the first film material 30 and avoids interference with other unwinding or winding mechanisms.

[0058] Optionally, such as Figure 3As shown, the unwinding assembly also includes a fourth unwinding mechanism 18 and a third main drive roller. Both the fourth unwinding mechanism 18 and the third main drive roller are located on the side of the transfer mechanism 8 close to the coating module 200. The fourth unwinding mechanism 18 is used to unwind the second film material 31, and the third main drive roller is used to coat the second film material 31 onto the transfer surface of the proton exchange membrane 301 that has been peeled off by the transfer mechanism 8. The first winding mechanism 19 is used to wind up the proton exchange membrane 301 covered with the second film material 31.

[0059] Specifically, in the actual transfer process, after the proton exchange membrane 301 is transferred to both sides or one side with cathode and / or anode catalysts, a protective film 311 needs to be applied before rewinding. This invention, by setting a fourth unwinding mechanism 18 and a third main drive roller, allows the protective film 311 to be applied to the transfer surface of the proton exchange membrane 301 (i.e., CCM) after the transfer is completed, ensuring the transfer quality of the proton exchange membrane 301. The fourth unwinding mechanism 18 can unwind the second film material 31 (protective film 311) to the third drive roller for application to the proton exchange membrane 301. Since the cathode transfer film 302 and / or the anode transfer film 303 can be directly wound up by the second winding mechanism 16 and the third winding mechanism 14 after transfer and peeling, they can be set up close to the transfer mechanism 8. However, since the proton exchange membrane 301 needs to be coated before winding, the first winding mechanism 19, the fourth unwinding mechanism 18, and the third main drive roller can be set at a position far away from the transfer mechanism 8 compared to the second winding mechanism 16 and the third winding mechanism 14. This avoids interference during the winding process of each film material, improves the transfer completion efficiency of the transfer module 100, and makes the spatial layout more rational, improves the integration of the equipment, and reduces the space occupied by the equipment.

[0060] Optionally, such as Figure 4 As shown, the coating module 200 includes a coating roller 20 and a coating die 22. The coating roller 20 is used to support the unwinding module 300 to unwind the first film 30, and the coating die 22 is used to coat the first film 30 on the coating roller 20. The fourth unwinding mechanism 18 can also unwind the second film 31 to the coating roller 20 to isolate the first film 30 from the coating roller 20. The first winding mechanism 19 can also wind the second film 31 that has passed through the coating roller 20.

[0061] Specifically, the surface of the coating roller 20 is usually metal. However, in the actual coating process, it is necessary to avoid the proton exchange membrane 301 or the catalyst coating from coming into contact with the metal. The second film material 31 (protective film 311) unwound by the fourth unwinding mechanism 18 is configured to be able to be unwound to the coating roller 20. This allows the second film material 31 to be wound around the coating roller 20 and then wound up by the first winding mechanism 19. This avoids the risk of the first film material 30 (e.g., proton exchange membrane 301) or the coating directly contacting the coating roller 20 during the coating process, thus improving the coating quality. It also enables the reuse of the fourth unwinding mechanism 18 and the first winding mechanism 19 in the transfer module 100, improving the utilization efficiency of each module of the equipment, reducing the number of parts in the equipment, further improving the integration of the equipment, and reducing the space occupied by the equipment.

[0062] In practical applications, setting the fourth unwinding mechanism 18 and the first winding mechanism 19 to the side close to the coating module 200 not only facilitates the coating and winding of the proton exchange membrane 301 during the transfer process in the transfer module 100, but also helps to isolate the proton exchange membrane 301 from the coating roller 20 during the coating process, especially when performing double-sided direct coating on the proton exchange membrane 301, thus simplifying the complexity of the equipment.

[0063] Optionally, such as Figure 2 and Figure 4 As shown, the coating module 200 also includes a vision positioning element 21, which is located below the coating die head 22 and is used to detect the alignment of the first film material 30 during double-sided coating.

[0064] Specifically, in the actual coating process, when the proton exchange membrane 301 is directly coated on both sides, it is necessary to ensure the alignment of the coatings on both sides of the proton exchange membrane 301 to guarantee the quality of the final produced battery. A visual positioning component 21 is installed in the coating module 200 to continuously detect the alignment of the two sides of the proton exchange membrane 301 during the coating process, allowing for adjustments to the coating position as needed and improving the coating quality of the direct coating of the proton exchange membrane 301. The visual positioning component 21 can employ visualization equipment such as a camera, and optimization of coating quality can be achieved through manual or automated detection and control.

[0065] Optionally, such as Figure 4 As shown, the unwinding module 300 includes a fifth unwinding mechanism 25, a fifth winding mechanism 23, and a fourth main drive roller; the fifth unwinding mechanism 25 is used to unwind the first film material 30 onto the coating roller 20, the fourth main drive roller is used to peel off the back film 32 from the first film material 30 unwound from the fifth unwinding mechanism 25, and the fifth winding mechanism 23 is used to wind up the back film 32.

[0066] Specifically, in this embodiment, when coating the first film material 30 requiring the peeling of the backing film 32, such as double-sided coating of the proton exchange membrane 301, the coating module 200 can unwind the proton exchange membrane 301 via the fifth unwinding mechanism 25, and the fourth main drive roller peels off the backing film 32 of the proton exchange membrane 301. Simultaneously, the fourth unwinding mechanism 18 unwinds the second film material 31 (protective film 311) to the coating roller 20 to prevent the proton exchange membrane 301 or the coating from contacting the metal parts. The fifth winding mechanism 23 then winds up the peeled backing film 32, further improving the automation level of the equipment. Additionally, the fourth main drive roller can also be installed within the coating module 200, and can be specifically designed to match the actual space of the equipment.

[0067] Optionally, such as Figure 4 As shown, the second unwinding mechanism 9 or the third unwinding mechanism 10 is also used to unwind the second film material 31, which is used to separate the first film material 30 that has passed through the coating module 200 from the oven module 500; the winding module 400 includes a sixth winding mechanism 28 and a fifth main drive roller, which is used to coat the first film material 30 that has passed through the oven module 500 with the second film material 31, and the sixth winding mechanism 28 is used to wind up the first film material 30 covered with the second film material 31.

[0068] Specifically, in this embodiment, the second film material 31 is a backing film 312. That is, after the first film material 30 is coated in the coating module 200, especially after double-sided coating, the backing film 312 is unwound to the bottom of the coated first film material 30 by the second unwinding mechanism 9 or the third unwinding mechanism 10. This allows the first film material 30 to be isolated from the oven module after entering it. The backing film 312 can isolate and protect the coating on the bottom, improving the coating quality of the proton exchange membrane 301 during double-sided direct coating. At the same time, a sixth winding mechanism 28 and a fifth main drive roller are provided in the winding module 400, so that the sixth winding mechanism 28 can wind up the first film material 30 after the fifth main drive roller has coated the second film material 31 (backing film 312), completing the finished product winding.

[0069] Optionally, such as Figure 2 and Figure 4 As shown, the winding module 400 also includes a third vision inspection element 26, which is used to detect the coating amount of the first film material 30 after coating module 200. Before the fifth main drive roller is coated, the coating after coating and drying can also be inspected by the third vision inspection element 26 to ensure the quality of the finished product.

[0070] Optionally, such as Figure 3As shown, the winding assembly also includes a first visual inspection element 12 and a second visual inspection element 11; the first visual inspection element 12 is used to detect the amount of coating residue on the cathode transfer film 302 after transfer by the transfer mechanism 8, and the second visual inspection element 11 is used to detect the amount of coating residue on the anode transfer film 303 after transfer by the transfer mechanism 8.

[0071] Specifically, in this embodiment, by setting a first visual detection element 12 and a second visual detection element 11, the amount of coating residue on the cathode transfer film 302 or anode transfer film 303 after transfer can be detected. At the same time, a fourth visual detection element 13 and a fifth visual detection element 15 can be set to detect the amount of coating transferred on both sides of the proton exchange membrane 301, thereby obtaining the transfer migration rate and providing feedback on the transfer quality. This achieves closed-loop control in the transfer process, eliminating the need for manual monitoring of production quality and reducing production costs.

[0072] Optionally, such as Figure 2 and Figure 4 As shown, the unwinding module 300 includes a fifth unwinding mechanism 25 and a first load detection element 24. The fifth unwinding mechanism 25 is used to unwind the first film material 30 to the coating module 200, and the first load detection element 24 is used to detect the coating load of the first film material 30 unwound by the fifth unwinding mechanism 25. The winding module 400 includes a sixth winding mechanism 28 and a second load detection element 27. The sixth winding mechanism 28 is used to wind up the first film material 30 after passing through the oven module 500, and the second load detection element 27 is used to detect the coating load of the film to be processed after passing through the oven module 500.

[0073] Specifically, in this embodiment, by setting a first load detection element 24 and a second load detection element 27 in the unwinding module 300 and the winding module 400 respectively, the coating load of the first film material 30 before and after coating can be detected. For example, an X-ray load detection instrument can be used to detect the platinum load, thereby monitoring the coating quality and realizing closed-loop control in the coating process. There is no need for manual monitoring of production quality, which further reduces production costs.

[0074] According to a second aspect of the present invention, a battery production line is provided, including the coating transfer equipment of the first aspect.

[0075] Specifically, in this embodiment, the battery production line includes the coating and transfer equipment mentioned in any embodiment of the first aspect, which has advantages such as high integration, small footprint, high working efficiency, high degree of automation, low labor cost, and low energy consumption. It can meet the production needs of small-batch pilot lines and the process requirements of production lines, and the quality of the products is controllable, as well as the production efficiency and quality of the batteries.

[0076] The above embodiments mainly describe the differences between the various embodiments. As long as the different optimization features between the various embodiments are not contradictory, they can be combined to form a better embodiment. For the sake of brevity, they will not be elaborated here.

[0077] While specific embodiments of the present invention have been described in detail by way of examples, those skilled in the art should understand that the above examples are for illustrative purposes only and are not intended to limit the scope of the present invention. Those skilled in the art should understand that modifications can be made to the above embodiments without departing from the scope and spirit of the present invention. The scope of the present invention is defined by the appended claims.

Claims

1. A coating transfer printing apparatus, characterized by, The application relates to a coating and drying device. The device comprises a transfer module, a coating module, a unwinding module, a drying oven module and a winding module. The transfer module comprises a winding assembly, a transfer mechanism and a winding assembly. The winding assembly is used to unwind a first film material to the transfer mechanism.

2. The coating transfer apparatus according to claim 1, wherein The winding assembly is used to unwind a first film material to the coating module. The drying oven module is used to dry the first film material after the coating module. The winding module, the coating module, the transfer module and the winding module are arranged in sequence along a first direction.

3. The coating transfer printing apparatus according to claim 2, wherein The drying oven module is arranged on one side of the transfer module. The winding assembly can also unwind a second film material to the coating module and / or the drying oven module to isolate the first film material from the coating module and / or the drying oven module.

4. The coating transfer apparatus according to claim 2, wherein The first film material is a proton film, a cathode transfer film or an anode transfer film. The transfer mechanism can also peel the proton film, the cathode transfer film and the anode transfer film after thermal transfer.

5. The coating transfer apparatus according to claim 4, wherein The winding assembly comprises a first winding mechanism, a second winding mechanism and a third winding mechanism. The first winding mechanism, the second winding mechanism and the third winding mechanism are used to unwind the proton film, the cathode transfer film and the anode transfer film to the transfer mechanism in sequence. The winding assembly comprises a first winding mechanism, a second winding mechanism and a third winding mechanism. The first winding mechanism, the second winding mechanism and the third winding mechanism are used to wind the proton film, the cathode transfer film and the anode transfer film peeled from the transfer mechanism in sequence. The first winding mechanism is arranged on one side of the transfer mechanism close to the winding module. The second winding mechanism, the third winding mechanism, the first winding mechanism, the second winding mechanism and the third winding mechanism are arranged on one side of the transfer mechanism close to the coating module. The winding assembly further comprises a fourth winding mechanism and a first main driving roller. The first main driving roller is arranged between the first winding mechanism and the transfer mechanism and is used to peel the back film of the first film material unwound from the first winding mechanism. The winding assembly further comprises a fourth winding mechanism and a third main driving roller. The fourth winding mechanism is used to unwind a second film material. The third main driving roller is used to cover the second film material on the transfer surface of the proton film peeled from the transfer mechanism. The coating module comprises a coating roller and a coating die. The coating roller is used to support the first film material unwound from the winding module. The fourth winding mechanism can also unwind the second film material to the coating roller to isolate the first film material from the coating roller. The first winding mechanism can also wind the second film material around the coating roller.

6. The coating transfer apparatus according to claim 5, wherein The coating module further comprises a visual positioning device arranged below the coating die for detecting the alignment of the first film material during double-sided coating.

7. The coating transfer apparatus according to claim 5, wherein The unwinding module comprises a fifth unwinding mechanism, a fifth winding mechanism and a fourth main drive roller; The fifth unwinding mechanism is used for unwinding the first film material onto the coating roller, the fourth main drive roller is used for peeling the back film of the first film material unwound from the fifth unwinding mechanism, and the fifth winding mechanism is used for winding the back film.

8. The coating transfer apparatus according to claim 5, wherein The second unwinding mechanism or the third unwinding mechanism is further used for unwinding a second film material, and the second film material is used for isolating the first film material passing through the coating module from the oven module; The winding module comprises a sixth winding mechanism and a fifth main drive roller, the fifth main drive roller is used for covering the first film material passing through the oven module with the second film material, and the sixth winding mechanism is used for winding the first film material covered with the second film material.

9. The coating transfer printing apparatus according to claim 2, wherein The winding assembly further comprises a first visual detection device and a second visual detection device; The first visual detection device is used for detecting the residual amount of coating on the cathode transfer film after being transferred by the transfer mechanism, and the second visual detection device is used for detecting the residual amount of coating on the anode transfer film after being transferred by the transfer mechanism.

10. The coating transfer apparatus according to claim 1, wherein The unwinding module comprises a fifth unwinding mechanism and a first load detection device, the fifth unwinding mechanism is used for unwinding the first film material to the coating module, and the first load detection device is used for detecting the coating load of the first film material unwound by the fifth unwinding mechanism; The winding module comprises a sixth winding mechanism and a second load detection device, the sixth winding mechanism is used for winding the first film material after passing through the oven module, and the second load detection device is used for detecting the coating load of the film to be processed after passing through the oven module.

11. The coating transfer printing apparatus according to claim 10, wherein The winding module further comprises a third visual detection device, and the third visual detection device is used for detecting the coating amount of the first film material passing through the coating module.

12. A battery production line, characterized by The coating transfer device comprises the coating transfer device according to any one of claims 1-11.

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