CN111883786A

CN111883786A - Device and method for preparing membrane electrode CCM (continuous charge coupled device) by pattern format continuous transfer printing

Info

Publication number: CN111883786A
Application number: CN202010894895.3A
Authority: CN
Inventors: 唐海; 杜瓦·瑞·苏萨; 王天喜; 贺萍; 张禾
Original assignee: Shanghai Yihydrogen Technology Co ltd
Current assignee: Shanghai Yihydrogen Technology Co ltd
Priority date: 2020-08-31
Filing date: 2020-08-31
Publication date: 2020-11-03

Abstract

The invention relates to a device and a method for preparing a membrane electrode CCM (continuous transfer printing) by pattern format continuous transfer printing, wherein the device comprises a proton membrane unwinding roller, a proton membrane back membrane winding roller, an anode transfer printing film unwinding roller, a preheating unit, a cooling unit, a humidifying unit and a CCM winding roller which are sequentially arranged along the advancing direction, a first hot pressing roller and a second hot pressing roller which are vertically arranged are arranged between the preheating unit and the cooling unit, a cathode transfer printing protective belt and an anode transfer printing protective belt are arranged between the first hot pressing roller and the second hot pressing roller, the cathode transfer printing protective belt is used for isolating the first hot pressing roller from the cathode transfer printing film, the anode transfer printing protective belt is used for isolating the second hot pressing roller from the anode transfer printing film, the first hot pressing roller and the second hot pressing roller are used for uniformly heating and pressurizing the cathode transfer printing; compared with the prior art, the method can realize continuous thermal transfer printing of the CCM in a pattern format, and improve the transfer printing precision and quality.

Description

Device and method for preparing membrane electrode CCM (continuous charge coupled device) by pattern format continuous transfer printing

[ technical field ]

The invention belongs to the technical field of hydrogen fuel cells, and particularly relates to a device and a method for preparing a membrane electrode CCM (continuous transfer printing) by a pattern format.

[ background art ]

The hydrogen fuel cell directly converts chemical energy into electric energy by using an oxidation-reduction reaction between a fuel and an oxidant, and byproducts are water and heat, so that the hydrogen fuel cell has the characteristics of energy conservation and environmental protection. The hydrogen fuel cell core assembly Membrane Electrode (MEA) consists of a proton exchange membrane, a catalyst and a gas diffusion layer and is used as a cell electrochemical reaction area. In the Membrane electrode preparation process, a cathode catalyst and an anode catalyst are required to be attached to the surface of a proton exchange Membrane to form CCM (catalyst coated Membrane, abbreviated as CCM). The length and width of the CCM catalyst reaction region and the length and width sides of the proton membrane are respectively provided with a distance to form a catalyst layer pattern, and the pattern type CCM can prolong the service life of the proton membrane and save the catalyst cost.

At present, the main preparation method of the membrane electrode comprises the following steps: firstly, slit direct coating, namely coating cathode slurry and anode slurry containing a catalyst on the surface of a proton membrane respectively, and has the characteristic of high preparation efficiency; the method is technically characterized in that after one side is coated, when slurry on the other side is coated, a proton membrane is easy to swell and deform, the slurry coating uniformity control difficulty is high, and the coating CCM quality is influenced. Secondly, thermal transfer printing, namely coating slurry containing cathode and anode catalysts on a cathode transfer printing film and an anode transfer printing film respectively, performing thermal pressing and transfer printing on the catalyst slurry on the cathode transfer printing film and the anode transfer printing film to the surface of the proton membrane after heating and drying, and then stripping the transfer printing film to obtain a CCM; the thermal transfer printing method avoids the proton membrane swelling problem existing in the slit direct coating method, and the process quality reliability is high. An effective way for batch preparation of CCM by using a thermal transfer printing method is to take a proton membrane coil stock and a catalyst transfer printing membrane coil stock as raw materials and carry out continuous transfer printing in a coil-to-coil pattern format.

As the thickness of the proton film in CCM is only 7-25 microns, the tensile deformation capability is extremely low, and particularly the flexibility is extremely high under the transfer printing temperature condition. When the materials are discharged and transferred in a roll-to-roll mode, tension is controlled to avoid tensile plastic deformation of the proton membrane, the feeding positions of the proton membrane, the cathode and the anode transfer film are accurately controlled, and uniform heating and pressurization of the transfer film are the technical key for realizing continuous transfer printing of a pattern format to prepare CCM. In addition, the removal of air bubbles adhering to the proton membrane and the membrane between which the catalyst is transferred is also an important point in controlling the CCM transfer quality.

Although techniques for fabricating CCMs by thermal transfer printing have been reported. Document 1 (film double-side automatic alignment batch coating method, application No. 201110458175.3) discloses a technique in which two sides of a proton membrane web are sealed with two sealed frame webs having windows, and then a catalyst on a back film is roll-transferred to a window region of the frame web. The method requires that the cathode frame film and the anode frame film are precut and are jointed with the proton membrane, and the manufacturing precision of CCM is influenced by accumulated processing errors in the jointing process. Moreover, the proton membrane is the same size as the frame, increasing the proton membrane consumption. The thickness of the sealing frame attached before the transfer printing is influenced, the edge of a window of a transfer printing area is uneven in transfer printing pressure, catalyst transfer is not facilitated, the weak point of a proton membrane is easy to cause membrane electrode leakage.

Document 2 discloses a method of producing a CCM by continuous thermal transfer (membrane electrode assembly manufacturing apparatus and membrane electrode assembly manufacturing method, application No. 201180013022.6): and respectively unreeling proton membranes, spraying back membranes with catalyst layers, carrying out flat plate preheating, prepressing, rolling thermal transfer printing and cooling, and respectively reeling CCM, cathode back membranes and anode back membranes. According to the technology, flat pressing preheating is arranged before transfer printing, and a flat pressing precooling process is arranged after transfer printing, so that tension fluctuation is formed in the feeding process of the proton membrane, the cathode and the anode transfer membrane, and the control of the feeding position of the membrane is not facilitated. Meanwhile, the technology does not have the function of preparing the pattern-format CCM, and the compression roller directly contacts the transfer printing film, so that the transfer printing pressure is easily distributed unevenly, and the catalyst migration efficiency and the catalyst adhesion strength are influenced. In addition, in this technique, when the CCM is wound, no separation protective film is disposed on the cathode and anode sides of the CCM, so that the cathode and anode catalysts come into contact, and contamination and failure occur.

The pattern format continuous transfer method disclosed in document 3 (a continuous roll-to-roll pattern format transfer apparatus and a transfer method thereof, application No. 2020104022518) employs flat-pressure transfer, is not favorable for bubble discharge, and has a flat-pressure contact area much larger than a roll-pressure contact area, requires a large press load, and is expensive to operate.

[ summary of the invention ]

The invention aims to solve the defects and provide a device for preparing membrane electrode CCM by continuous pattern format transfer printing, which can realize continuous thermal transfer printing production of CCM in a pattern format, improve the transfer printing precision and quality, and avoid or reduce the problems of uneven transfer printing pressure, indirect trigger pollution of cathode and anode catalysts and the like.

The device for preparing the membrane electrode CCM by pattern format continuous transfer printing comprises a proton membrane unwinding roller 1, a proton membrane back membrane winding roller 2, an anode transfer membrane unwinding roller 8, a preheating unit 28, a cooling unit 29, a humidifying unit 30 and a CCM winding roller 27 which are sequentially arranged along a traveling direction, wherein the proton membrane unwinding roller 1 is used for releasing a proton membrane 40, the proton membrane back membrane winding roller 2 is used for winding a proton membrane protective membrane 41, the anode transfer membrane unwinding roller 8 is used for unwinding an anode transfer membrane 43 attached with an anode catalyst 49, a hot pressing roller 19 and a hot pressing roller 20 which are arranged along the vertical direction are arranged between the preheating unit 28 and the cooling unit 29, a cathode transfer printing protective belt 44 and an anode transfer printing protective belt 45 are arranged between the hot pressing roller 19 and the hot pressing roller 20, and the anode transfer printing protective belt 45 is formed by a driving roller 11, a driving roller 12, a CCM, The driving roller three 13 and the driving roller four 14 are circularly conveyed, the cathode transfer protection belt 44 is circularly conveyed by the driving roller five 15, the driving roller six 16, the driving roller seven 17 and the driving roller eight 18, the driving roller one 11 and the driving roller five 15 are arranged at the upstream of the preheating unit 28, the driving roller four 14 and the driving roller six 16 are arranged at the downstream of the cooling unit 29, the cathode transfer protection belt 44 is used for separating the first hot pressing roller 19 from the cathode transfer film 42, the anode transfer protection belt 45 is used for separating the second hot pressing roller 20 from the anode transfer film 43, the first hot pressing roller 19 and the second hot pressing roller 20 are used for uniformly heating and pressurizing the cathode transfer protection belt 44 and the anode transfer protection belt 45 and transmitting pressure and heat to the proton membrane 40 and the transfer film, and the CCM take-up roller 27 is used for taking up the CCM.

Further, the cathode transfer film production device further comprises a cathode transfer film unwinding roller 5 and a cathode transfer film winding roller 24, wherein the cathode transfer film unwinding roller 5 and the anode transfer film unwinding roller 8 are arranged oppositely, the cathode transfer film unwinding roller 5 is used for releasing a cathode transfer film 42 attached with a cathode catalyst 48, the cathode transfer film winding roller 24 is arranged at the upstream of the humidifying unit 30, and the cathode transfer film winding roller 24 is used for winding a cathode transfer film 46.

Further, a pair of guide rollers 3 arranged up and down is arranged between the proton membrane unwinding roller 1 and the proton membrane backing film winding roller 2, a pair of proton membrane height adjusting rollers 4 arranged up and down is arranged at the lower part of the guide rollers 3, a cathode transfer film position adjusting roller 7 and an anode transfer film position adjusting roller 10 are arranged up and down at the lower part of the proton membrane height adjusting rollers 4, a cathode transfer film guide roller 6 is arranged between the cathode transfer film position adjusting roller 7 and the cathode transfer film unwinding roller 5, and an anode transfer film guide roller 9 is arranged between the anode transfer film position adjusting roller 10 and the anode transfer film unwinding roller 8.

Further, a pair of cathode transfer film guide rollers 22 arranged up and down is arranged on the upstream of the humidification unit 30, a cathode transfer film guide roller 23 is arranged between the cathode transfer film guide roller 22 positioned on the upper side and the cathode transfer film take-up roller 24, a pair of CCM rectification rollers 21 arranged up and down is arranged on the upstream of the cathode transfer film guide roller 22, a pair of CCM gap adjustment rollers 25 arranged up and down is arranged on the downstream of the humidification unit 30, and a CCM guide roller 26 is arranged between the CCM gap adjustment rollers 25 and the CCM take-up roller 27.

Further, the cathode transfer protection tape 44 and the anode transfer protection tape 45 are made of glass fiber reinforced PTFE materials.

Further, the preheating unit 28 includes an upper row of rollers 31a and a lower row of rollers 31b, a hot air inlet or a far infrared heating element 32 is disposed between adjacent rollers of the upper row of rollers 31a and the lower row of rollers 31b, and the upper row of rollers 31a and the lower row of rollers 31b are disposed in a staggered manner and form a near sinusoidal or S-shaped channel therebetween.

Further, the first hot pressing roller 19 is formed by wrapping silica gel on a steel roller or an aluminum alloy roller, the second hot pressing roller 20 is a steel roller or an aluminum alloy roller, the first hot pressing roller 19 or the second hot pressing roller 20 moves up and down along a direction perpendicular to the cathode transfer protection belt 44 or the anode transfer protection belt 45, the axial length of the first hot pressing roller 19 and the axial length of the second hot pressing roller 20 are consistent with the length of a transfer area of the CCM, the heating temperature is 120-180 ℃, and the heating mode is oil heating, electromagnetic induction or electric heating.

Further, the cooling unit 29 adopts a water cooling mode, the cooling unit 29 comprises an upper row of water cooling rollers 33a and a lower row of water cooling rollers 33b, the upper row of water cooling rollers 33a and the lower row of water cooling rollers 33b are arranged in a staggered mode, a near-sinusoidal or S-shaped channel is formed between the upper row of water cooling rollers 33a and the lower row of water cooling rollers 33b, one end of each of the upper row of water cooling rollers 33a and the lower row of water cooling rollers 33b is provided with a water inlet 34.

Further, the cooling unit 29 adopts an air cooling mode, the cooling unit 29 comprises an upper row of rollers 35a of the cooling unit, a lower row of rollers 35b of the cooling unit and a forced cooling fan 36, the upper row of rollers 35a of the cooling unit and the lower row of rollers 35b of the cooling unit are arranged in a staggered mode, and a near-sinusoidal or S-shaped channel is formed between the upper row of rollers and the lower row of rollers.

The invention also provides a method for preparing membrane electrode CCM by pattern format continuous transfer printing, which comprises the following steps:

1) and (3) an unreeling stage: the method comprises the following steps of releasing a proton membrane 40 by a proton membrane unwinding roller 1, winding a proton membrane protective film 41 by a proton membrane backing film winding roller 2, unwinding a cathode transfer film 42 with a cathode catalyst by a cathode transfer film unwinding roller 5, guiding by a cathode transfer film guide roller 6, releasing an anode transfer film 43 with an anode catalyst by an anode transfer film unwinding roller 8, and guiding by an anode transfer film guide roller 9; the proton membrane height adjusting roller 4, the cathode transfer membrane orientation adjusting roller 7 and the anode transfer membrane orientation adjusting roller 10 jointly adjust the distance between the proton membrane 40, the cathode transfer membrane 42, the anode transfer membrane 43, the cathode transfer protective tape 44 and the anode transfer protective tape 45, and the cathode transfer membrane orientation adjusting roller 7 and the anode transfer membrane orientation adjusting roller 10 are utilized to control the cathode transfer membrane 42, the anode transfer membrane 43 and the proton membrane 40 to have a certain included angle, so that the contact between the transfer membrane before transfer and the proton membrane is avoided;

2) a preheating stage: heating a proton membrane 40, a cathode transfer membrane 42, an anode transfer membrane 43, a cathode transfer protective tape 44 and an anode transfer protective tape 45 to a proton membrane softening temperature range of 100-150 ℃;

3) a transfer printing stage: heating the first hot-pressing roller 19 and the second hot-pressing roller 20 to 100-180 ℃; keeping the first heat-pressing roller 19 fixed, controlling the cathode transfer protection belt 44 to contact with the first heat-pressing roller 19, when detecting that the proton membrane and the transfer membrane are drawn to the initial position of the transfer area, the second heat-pressing roller 20 approaches the anode transfer protection belt 45, heating and pressing, and transferring heat and pressure to the anode transfer membrane 43, the proton membrane 40 and the cathode transfer membrane 42; or keeping the second heat-pressing roller 20 fixed, controlling the anode transfer protection belt 45 to contact with the second heat-pressing roller 20, enabling the first heat-pressing roller 19 to approach the cathode transfer protection belt 44, heating and pressing, and transmitting heat and pressure to the cathode transfer film 42, the proton film 40 and the anode transfer film 43; namely, the catalyst of the cathode transfer film 42 and the anode transfer film 43 is transferred to the proton membrane 40; in the transfer process, the length of the pattern format transfer is controlled by the length of the first hot-pressing roller 19 and the second hot-pressing roller 20, when the width of the CCM window is reached, the first hot-pressing roller 19 and the second hot-pressing roller 20 are separated until the proton membrane and the transfer membrane are drawn to the next transfer window, and the adjacent windows are transferred by repeatedly heating and pressurizing;

4) and (3) a cooling stage: the temperature is reduced to the range from normal temperature to 100 ℃ by arranging a fan and adopting forced air cooling or water cooling roller cooling;

5) and (3) a winding stage: CCM after the deviation rectification and cooling by the CCM deviation rectification roller 21 is utilized, the CCM cathode back film is stripped by the cathode transfer film guide roller 22, the cathode transfer film guide roller 23 controls the cathode transfer film 46 to be folded and advanced in a direction close to 180 degrees, then the CCM is wound by the cathode transfer film winding roller 24, CCM47 with the anode transfer film enters the humidifying unit 30 to be humidified, and finally the CCM is wound by the CCM winding roller 27 after being guided by the CCM guide roller 26.

Compared with the prior art, the invention has the following advantages:

(1) in the unreeling stage, the cathode transfer film orientation adjusting roller and the anode transfer film orientation adjusting roller are adopted to adjust and control the gaps between the proton film and the cathode transfer film, so that the full contact between the films and the downstream preheating effect are favorably ensured;

(2) in the preheating stage, because a sine-shaped or S-shaped conveying channel formed by two rows of rollers is adopted, the on-way resistance, traction force and tension fluctuation of the proton membrane and the transfer printing film are reduced, the tension control and the feed amount control are facilitated, and the on-way friction force of the film can be adjusted by adjusting the horizontal and vertical distances between the upper roller and the lower roller;

(3) the transfer printing stage adopts the compression roller for heating and pressurizing, the contact area is small, the transfer printing pressure intensity is improved, and the transfer printing is relatively flat, so that the adhesion strength between the catalyst and the proton membrane is favorably improved, and the bubbles between the membranes are favorably discharged; secondly, silica gel is coated outside the hot pressing roller I, so that the problem of uneven transfer pressure is avoided or reduced;

(4) the cooling chamber arranged after the transfer printing is beneficial to improving the CCM strength and the transfer printing film strength after the transfer printing and is beneficial to stripping the cathode transfer printing film;

(5) the humidification process arranged after the transfer printing is beneficial to controlling the CCM quality, and the unreleased anode transfer printing film is used as a CCM protective film, so that the contact between the cathode and the anode catalyst of a CCM roll material is avoided, and the material consumption is saved;

to sum up: the method and the device for preparing the membrane electrode CCM by continuous transfer printing of the pattern format can realize continuous thermal transfer printing of the pattern format to produce the CCM, improve the transfer printing precision and quality, and are worthy of popularization and application.

[ description of the drawings ]

FIG. 1 is a schematic diagram of a pattern format thermal transfer process according to a first embodiment of the present invention;

FIG. 2 is a schematic diagram of a pattern format thermal transfer process according to a second embodiment of the present invention;

FIG. 3 is a schematic structural diagram of a pattern format CCM to be produced according to the present invention;

FIG. 4 is a schematic structural view of a multi-layer transfer material of the present invention;

FIG. 5 is a schematic diagram of the preheating unit of the present invention;

FIG. 6 is a schematic view of the structure of the water cooling unit of the present invention;

FIG. 7 is a schematic structural view of an air cooling unit of the present invention;

in the figure: 1. a proton membrane unwinding roller 2, a proton membrane backing film winding roller 3, a guide roller 4, a proton membrane height adjusting roller 5, a cathode transfer film unwinding roller 6, a cathode transfer film guide roller 7, a cathode transfer film orientation adjusting roller 8, an anode transfer film unwinding roller 9, an anode transfer film guide roller 10, an anode transfer film orientation adjusting roller 11, a drive roller one 12, a drive roller two 13, a drive roller three 14, a drive roller four 15, a drive roller five 16, a drive roller six 17, a drive roller seven 18, a drive roller eight 19, a hot press roller one 20, a hot press roller two 21, a CCM deviation rectifying roller 22, a cathode transfer film guide roller 23, a cathode transfer film guide roller 24, a cathode transfer film winding roller 25, a CCM gap adjusting roller 26, a CCM guide roller 27, a CCM winding roller 28, a preheating unit 29, a cooling unit 30, a humidifying unit 31a, An upper row of rollers 31b, a lower row of rollers 32, a heating element 33a, an upper row of water cooling rollers 33b, a lower row of water cooling rollers 34, a water inlet 35a, a cooling unit upper row of rollers 35b, a cooling unit lower row of rollers 36, a forced cooling fan 40, a proton membrane 41, a proton membrane protective film 42, a cathode transfer film 43, an anode transfer film 44, a cathode transfer protective tape 45, an anode transfer protective tape 46, a cathode transfer film 47, a CCM 48 with an anode transfer film, a cathode catalyst 49, and an anode catalyst.

[ detailed description of the invention ]

The invention provides a device for preparing a membrane electrode CCM (continuous Membrane electrode) by pattern format continuous transfer printing, which comprises a proton membrane unwinding roller 1, a proton membrane backing film winding roller 2, a cathode transfer membrane unwinding roller 5, an anode transfer membrane unwinding roller 8, a preheating unit 28, a cooling unit 29, a cathode transfer membrane winding roller 24, a humidifying unit 30 and a CCM winding roller 27 which are sequentially arranged along the advancing direction, wherein the proton membrane unwinding roller 1 is used for releasing a proton membrane 40, the proton membrane backing film winding roller 2 is used for winding a proton membrane protective membrane 41, the cathode transfer membrane unwinding roller 5 and the anode transfer membrane unwinding roller 8 are oppositely arranged, the cathode transfer membrane unwinding roller 5 is used for releasing a cathode transfer membrane 42 attached with a cathode catalyst 48, the anode transfer membrane unwinding roller 8 is used for unwinding an anode transfer membrane 43 attached with an anode catalyst 49, and the cathode transfer membrane winding roller 24 is used for winding a cathode transfer membrane 46; a first hot-pressing roller 19 and a second hot-pressing roller 20 which are arranged along the up-down direction are arranged between the preheating unit 28 and the cooling unit 29, a cathode transfer protection belt 44 and an anode transfer protection belt 45 are arranged between the first hot-pressing roller 19 and the second hot-pressing roller 20, the first hot-pressing roller 19 or the second hot-pressing roller 20 can move up and down along the direction vertical to the conveying belt, the cathode transfer protection belt 44 and the anode transfer protection belt 45 are made of glass fiber reinforced PTFE materials, the anode transfer protection belt 45 is circularly conveyed by a first driving roller 11, a second driving roller 12, a third driving roller 13 and a fourth driving roller 14 which are arranged in a rectangular shape, the cathode transfer protection belt 44 is circularly conveyed by a fifth driving roller 15, a sixth driving roller 16, a seventh driving roller 17 and an eighth driving roller 18 which are arranged in a rectangular shape, the first driving roller 11 and the fifth driving roller 15 are arranged at the upstream of the preheating unit 28, the fourth driving, the anode transfer protection belt 45 is used for separating the second heat-pressing roller 20 from the anode transfer film 43, the first heat-pressing roller 19 and the second heat-pressing roller 20 are used for uniformly heating and pressing the cathode transfer protection belt 44 and the anode transfer protection belt 45 and transmitting pressure and heat to the proton membrane 40 and the transfer film, and the CCM take-up roller 27 is used for taking up CCM47 of the anode transfer film.

A pair of guide rollers 3 which are vertically arranged are arranged between the proton membrane unwinding roller 1 and the proton membrane backing film winding roller 2, a pair of proton membrane height adjusting rollers 4 which are vertically arranged are arranged at the downstream of the guide rollers 3, a cathode transfer film orientation adjusting roller 7 and an anode transfer film orientation adjusting roller 10 which are vertically arranged are arranged at the downstream of the proton membrane height adjusting rollers 4, a cathode transfer film guide roller 6 is arranged between the cathode transfer film orientation adjusting roller 7 and the cathode transfer film unwinding roller 5, and an anode transfer film guide roller 9 is arranged between the anode transfer film orientation adjusting roller 10 and the anode transfer film unwinding roller 8; a pair of cathode transfer film guide rollers 22 arranged up and down is arranged at the upstream of the humidifying unit 30, a cathode transfer film guide roller 23 is arranged between the cathode transfer film guide roller 22 positioned at the upper side and the cathode transfer film take-up roller 24, a pair of CCM rectification rollers 21 arranged up and down is arranged at the upstream of the cathode transfer film guide roller 22, a pair of CCM gap adjusting rollers 25 arranged up and down is arranged at the downstream of the humidifying unit 30, and a CCM guide roller 26 is arranged between the CCM gap adjusting rollers 25 and the CCM take-up roller 27.

The invention is further illustrated below with reference to specific examples:

the first embodiment is as follows:

as shown in fig. 1, the roll print material includes a proton membrane 40, a proton membrane protective film 41, a cathode transfer film 42 to which a cathode catalyst is attached, and an anode transfer film 43 to which an anode catalyst is attached.

The device for preparing the membrane electrode CCM by pattern format continuous transfer printing comprises: a proton membrane unwinding roller 1, a proton membrane protective film winding roller 2, a guide roller 3, a proton membrane height adjusting roller 4, a cathode transfer film unwinding roller 5, a cathode transfer film guide roller 6, a cathode transfer film orientation adjusting roller 7, an anode transfer film unwinding roller 8, an anode transfer film guide roller 9, an anode transfer film orientation adjusting roller 10, an anode transfer protective tape 45 and driving rollers thereof (a driving roller I11, a driving roller II 12, a driving roller III 13 and a driving roller IV 14), a cathode transfer protective tape 44 and driving rollers thereof (a driving roller V15, a driving roller VI 16, a driving roller VII 17 and a driving roller VIII 18), the device comprises a first hot-pressing roller 19, a second hot-pressing roller 20, a CCM rectification roller 21, a cathode transfer film guide roller 22, a cathode transfer film guide roller 23, a cathode transfer film take-up roller 24, a CCM gap adjusting roller 25, a CCM guide roller 26, a CCM take-up roller 27, a preheating unit 28, a cooling unit 29 and a humidifying unit 30.

The materials of the cathode transfer protection tape 44 and the anode transfer protection tape 45 are glass fiber reinforced PTFE. The preheating unit 28 comprises an upper row of rollers 31a and a lower row of rollers 31b, a hot air inlet or a far infrared heating element 32 is arranged between the adjacent rollers of the upper row of rollers 31a and the lower row of rollers 31b, the upper row of rollers 31a and the lower row of rollers 31b are arranged in a staggered manner, and a near sine or S-shaped channel is formed between the upper row of rollers 31a and the lower row of rollers 31 b. The first hot pressing roller 19 is formed by wrapping silica gel on a steel roller or an aluminum alloy roller, the second hot pressing roller 20 is a steel roller or an aluminum alloy roller, the axial length of the first hot pressing roller 19 or the second hot pressing roller 20 is consistent with the length of a transfer printing area of the CCM, the first hot pressing roller 19 or the second hot pressing roller 20 has a heating function, the heating temperature range is 120-180 ℃, the heating mode is electromagnetic induction or electric heating, and the heating temperature control precision is within +/-2 ℃. The cooling unit 29 can adopt a water cooling mode and comprises an upper row of water cooling rollers 33a and a lower row of water cooling rollers 33b, the upper row of water cooling rollers 33a and the lower row of water cooling rollers 33b are arranged in a staggered mode, a near sine or S-shaped channel is formed between the upper row of water cooling rollers 33a and the lower row of water cooling rollers 33b, one ends of the upper row of water cooling rollers 33a and the lower row of water cooling rollers 33b are provided with water inlets 34. The cooling unit 29 can also adopt an air cooling mode and comprises an upper row roller 35a of the cooling unit, a lower row roller 35b of the cooling unit and a forced cooling fan 36, wherein the upper row roller 35a of the cooling unit and the lower row roller 35b of the cooling unit are arranged in a staggered mode, and a near-sinusoidal or S-shaped channel is formed between the upper row roller and the lower row roller.

The device for preparing membrane electrode CCM by pattern format continuous transfer printing comprises the following roll materials to be processed: proton exchange membrane 40, proton membrane protective film 41, cathode transfer film 42 to which a cathode catalyst is attached, anode transfer film 43 to which an anode catalyst is attached, cathode transfer film 46, and CCM47 with anode transfer film.

In the device for preparing CCM by pattern format continuous transfer printing, the main functions of each part are as follows: proton membrane unwinding roller 1 is used for releasing proton membrane 40, and cathode transfer film unwinding roller 5 releases takes cathode transfer film 42, and anode transfer film unwinding roller 8 unreels anode transfer film 43, and proton membrane notacoria wind-up roll 2, cathode transfer film wind-up roll 24, CCM wind-up roll 27 are used for rolling proton membrane protection film 41, cathode transfer film 46 and the CCM47 of taking the anode transfer film respectively. The first driving roller 11, the second driving roller 12, the third driving roller 13 and the fourth driving roller 14 are used for circularly conveying an anode transfer protection belt 45, the fifth driving roller 15, the sixth driving roller 16, the seventh driving roller 17 and the eighth driving roller 18 are used for circularly conveying a cathode transfer protection belt 44, and the proton membrane height adjusting roller 4, the cathode transfer film orientation adjusting roller 7, the anode transfer film orientation adjusting roller 10, the cathode transfer film guide roller 22 and the CCM gap adjusting roller 25 are used for controlling the distance between the proton membrane and the cathode and the anode transfer films. Cathode transfer film guide roll 6, anode transfer film guide roll 9, cathode transfer film guide roll 23, and CCM guide roll 26 are all guide rolls.

The preheating unit 28 preheats the proton membrane 40, the cathode transfer membrane 42, the anode transfer membrane 43, the cathode transfer protective tape 44, and the anode transfer protective tape 45. The first heat-pressing roller 19 and the second heat-pressing roller 20 are used for uniformly heating and pressing the transfer cathode transfer protection tape 44 and the transfer anode protection tape 45, and transferring pressure and heat to the cathode transfer film 42, the anode transfer film 43 and the proton film 40. The cooling unit 29 is used for cooling the CCM after the transfer printing, and the cooling mode adopts forced air cooling or water cooling to cool the CCM and the transfer printing film to the temperature below 100 ℃. The humidifying unit 30 provides humidified air, and the relative humidity is controlled to be 50-80% at normal temperature for humidifying the CCM. The cathode transfer protection belt 44 and the anode transfer protection belt 45 are arranged between the first heat-pressing roller 19 and the second heat-pressing roller 20, the cathode transfer protection belt 44 separates the first heat-pressing roller 19 from the cathode transfer film 42, and the anode transfer protection belt 45 separates the second heat-pressing roller 20 from the anode transfer film 43.

The invention also discloses a method for preparing membrane electrode CCM by pattern format continuous transfer printing, wherein the transfer printing process comprises an unreeling stage, a preheating stage, a transfer printing stage, a cooling and reeling stage.

And (3) an unreeling stage: the proton exchange membrane material is a coil material, and one side of the proton exchange membrane material is provided with a protective membrane. The method comprises the following steps of releasing a proton membrane 40 by a proton membrane unwinding roller 1, winding a proton membrane protective film 41 by a proton membrane backing film winding roller 2, unwinding a cathode transfer film 42 with a cathode catalyst by a cathode transfer film unwinding roller 5, guiding by a cathode transfer film guide roller 6, releasing an anode transfer film 43 with an anode catalyst by an anode transfer film unwinding roller 8, and guiding by an anode transfer film guide roller 9; the proton membrane height adjusting roller 4, the cathode transfer membrane orientation adjusting roller 7 and the anode transfer membrane orientation adjusting roller 10 jointly adjust the distance between the proton membrane 40, the cathode transfer membrane 42, the anode transfer membrane 43, the cathode transfer protective tape 44 and the anode transfer protective tape 45, and the cathode transfer membrane orientation adjusting roller 7 and the anode transfer membrane orientation adjusting roller 10 are used for controlling the cathode transfer membrane 42, the anode transfer membrane 43 and the proton membrane 40 to have a certain included angle, so that the contact between the transfer membrane before transfer and the proton membrane is avoided.

A preheating stage: the proton membrane 40, the cathode transfer membrane 42, the anode transfer membrane 43, the cathode transfer protective tape 44, and the anode transfer protective tape 45 were heated to a proton membrane softening temperature range of 100-150 ℃.

A transfer printing stage: heating the first hot-pressing roller 19 and the second hot-pressing roller 20 to 100-180 ℃; keeping the first hot-pressing roller 19 fixed, controlling the cathode transfer protection belt 44 to contact with the first hot-pressing roller 19, when detecting that the proton membrane and the transfer membrane are drawn to the initial position of the transfer area, the second hot-pressing roller 20 approaches the anode transfer protection belt 45, heating and pressurizing, transferring heat and pressure to the anode transfer film 43, the proton membrane 40 and the cathode transfer film 42, and completing the catalyst transfer of the cathode transfer film 42 and the anode transfer film 43 to the proton membrane 40. Alternatively, the second heat-pressing roller 20 is kept stationary, the anode transfer protective tape 45 is controlled to contact the second heat-pressing roller 20, the first heat-pressing roller 19 approaches the cathode transfer protective tape 44, heat and pressure are applied, and heat and pressure are transmitted to the cathode transfer film 42, the proton film 40, and the anode transfer film 43, thereby completing the catalyst transfer of the cathode transfer film 42 and the anode transfer film 43 to the proton film 40. In the transfer process, the rolling distance is monitored by a device for controlling the rotation of the press roller, and when the width of a CCM window is reached, the first hot press roller 19 and the second hot press roller 20 are separated; the proton membrane and the transfer membrane are drawn to the next transfer window, and the adjacent window transfer is completed by repeated heating and pressurization; the length of the pattern format transfer is controlled by the length of the first hot-pressing roller 19 and the second hot-pressing roller 20.

And (3) a cooling stage: the temperature is reduced to the range from normal temperature to 100 ℃ by arranging a fan and adopting forced air cooling or water cooling roller cooling.

And (3) a winding stage: CCM after the deviation rectification and cooling by the CCM deviation rectification roller 21 is utilized, the CCM cathode back film is stripped by the cathode transfer film guide roller 22, the cathode transfer film guide roller 23 controls the cathode transfer film 46 to be folded and advanced in a direction close to 180 degrees, then the CCM is wound by the cathode transfer film winding roller 24, CCM47 with the anode transfer film enters the humidifying unit 30 to be humidified, and finally the CCM is wound by the CCM winding roller 27 after being guided by the CCM guide roller 26.

Example two:

as shown in fig. 2, the roll print material includes a proton membrane 40, a proton membrane protective film 41, and an anode transfer film 43 to which an anode catalyst is attached.

The device for preparing the membrane electrode CCM by pattern format continuous transfer printing comprises: the device comprises a proton membrane unwinding roller 1, a proton membrane protective film winding roller 2, a guide roller 3, a proton membrane height adjusting roller 4, an anode transfer film unwinding roller 8, an anode transfer film guide roller 9, an anode transfer film orientation adjusting roller 10, an anode transfer protective tape 45 and driving rollers (a driving roller I11, a driving roller II 12, a driving roller III 13 and a driving roller IV 14) thereof, a hot pressing roller I19, a hot pressing roller II 20, a CCM rectifying roller 21, a CCM gap adjusting roller 25, a CCM guide roller 26, a CCM winding roller 27, a preheating unit 28, a cooling unit 29 and a humidifying unit 30.

Wherein, the anode protection belt 45 is made of glass fiber reinforced PTFE. The preheating unit 28 comprises an upper row of rollers 31a and a lower row of rollers 31b, a hot air inlet or a far infrared heating element 32 is arranged between the adjacent rollers of the upper row of rollers 31a and the lower row of rollers 31b, the upper row of rollers 31a and the lower row of rollers 31b are arranged in a staggered manner, and a near sine or S-shaped channel is formed between the upper row of rollers 31a and the lower row of rollers 31 b. The first hot pressing roller 19 is formed by wrapping silica gel on a steel roller or an aluminum alloy roller, the second hot pressing roller 20 is a steel roller or an aluminum alloy roller, the axial length of the first hot pressing roller 19 or the second hot pressing roller 20 is consistent with the length of a transfer printing area of the CCM, the first hot pressing roller 19 or the second hot pressing roller 20 has a heating function, the heating temperature range is 120-180 ℃, the heating mode is electromagnetic induction, electric heating or oil heating, and the heating temperature control precision is within +/-2 ℃. The cooling unit 29 can adopt a water cooling mode and comprises an upper row of water cooling rollers 33a and a lower row of water cooling rollers 33b, the upper row of water cooling rollers 33a and the lower row of water cooling rollers 33b are arranged in a staggered mode, a near sine or S-shaped channel is formed between the upper row of water cooling rollers 33a and the lower row of water cooling rollers 33b, one ends of the upper row of water cooling rollers 33a and the lower row of water cooling rollers 33b are provided with water inlets 34. The cooling unit 29 can also adopt an air cooling mode and comprises an upper row roller 35a of the cooling unit, a lower row roller 35b of the cooling unit and a forced cooling fan 36, wherein the upper row roller 35a of the cooling unit and the lower row roller 35b of the cooling unit are arranged in a staggered mode, and a near-sinusoidal or S-shaped channel is formed between the upper row roller and the lower row roller.

The device for preparing membrane electrode CCM by pattern format continuous transfer printing comprises the following roll materials to be processed: a proton exchange membrane 40, a proton membrane protective film 41, an anode transfer film 43 to which an anode catalyst is attached, and CCM47 with the anode transfer film.

In the device for preparing CCM by pattern format continuous transfer printing, the main functions of each part are as follows: the proton membrane unwinding roller 1 is used for releasing a proton membrane 40, the anode transfer film unwinding roller 8 unwinds an anode transfer film 43, the proton membrane back membrane winding roller 2 and the CCM winding roller 27 are respectively used for winding a proton membrane protective film 41 and a CCM47 with an anode transfer film, the driving roller I11, the driving roller II 12, the driving roller III 13 and the driving roller IV 14 are used for circularly conveying an anode transfer protective tape 45, the proton membrane height adjusting roller 4, the cathode transfer film orientation adjusting roller 7, the anode transfer film orientation adjusting roller 10, the cathode transfer film guide roller 22 and the CCM gap adjusting roller 25 are all used for controlling the distances between the proton membrane and the cathode and the anode transfer film, and the cathode transfer film guide roller 6, the anode transfer film guide roller 9, the cathode transfer film guide roller 23 and the CCM guide roller.

The preheating unit 28 is used to preheat the proton membrane 40, the anode transfer film 43, and the anode transfer protective tape 45. The first and second heat-pressing

rollers

19 and 20 are used to uniformly heat and press the cathode transfer protective tape 44 and the anode transfer protective tape 45, and to transfer pressure and heat to the anode transfer film 43 and the proton film 40. The cooling unit 29 is used for cooling the CCM after the transfer printing, and the cooling mode adopts forced air cooling or water cooling to cool the CCM and the transfer printing film to the temperature below 100 ℃. The humidifying unit 30 provides humidified air, and the relative humidity is controlled to be 50-80% at normal temperature for humidifying the CCM. The cathode transfer protection belt 44 and the anode transfer protection belt 45 are arranged between the first heat-pressing roller 19 and the second heat-pressing roller 20, the cathode transfer protection belt 44 separates the first heat-pressing roller 19 from the cathode transfer film 42, and the anode transfer protection belt 45 separates the second heat-pressing roller 20 from the anode transfer film 43.

And (3) an unreeling stage: the proton exchange membrane material is a coil material, and one side of the proton exchange membrane material is provided with a protective membrane. The proton membrane unwinding roller 1 unwinds the proton membrane 40, and the proton membrane backing film winding roller 2 winds the backing film of the proton membrane. The cathode transfer film 42 with the cathode catalyst is unwound by the cathode transfer film unwinding roll 5 and guided by the cathode 6. Meanwhile, the anode transfer film 43 with the anode catalyst is discharged from the cathode 8 and guided by the anode transfer film guide roller 9. The proton membrane 40 and the cathode anode transfer film are adjusted by the proton membrane height adjusting roller 4, the cathode transfer film orientation adjusting roller 7, and the anode transfer film orientation adjusting roller 10, and the gap between the proton membrane height adjusting roller 4, the cathode transfer film orientation adjusting roller 7, and the anode transfer film orientation adjusting roller 10 is adjusted. The cathode transfer film and the anode transfer film are controlled to have a certain included angle with the proton membrane 40 by utilizing the cathode transfer film orientation adjusting roller 7 and the anode transfer film orientation adjusting roller 10, so that the contact between the transfer film and the proton membrane before transfer printing is avoided.

And (3) a winding stage: CCM after the deviation rectification and cooling by the CCM deviation rectification roller 21 is utilized, the CCM cathode back film is stripped by the cathode transfer film guide roller 22, the cathode transfer film guide roller 23 controls the cathode transfer film 46 to be folded and advanced in a direction close to 180 degrees, then the CCM is wound by the cathode transfer film winding roller 24, CCM47 with the anode transfer film enters the humidification unit to be humidified, and finally the CCM is wound by the CCM winding roller 27 after being guided by the CCM guide roller 26.

The present invention is not limited to the above embodiments, and any other changes, modifications, substitutions, combinations, and simplifications which do not depart from the spirit and principle of the present invention should be construed as equivalents and are included in the scope of the present invention.

Claims

1. The utility model provides a device of membrane electrode CCM is prepared in continuous rendition of pattern form, includes proton membrane unreel roller (1), proton membrane notacoria wind-up roller (2), anode transfer film unreel roller (8), preheat unit (28), cooling unit (29), humidification unit (30), CCM wind-up roller (27) that set gradually along the direction of travel, proton membrane unreel roller (1) is used for releasing proton membrane (40), proton membrane notacoria wind-up roller (2) are used for rolling proton membrane protection film (41), anode transfer film unreel roller (8) are used for unreeling anode transfer film (43) of adhering to anode catalyst (49), its characterized in that: a first hot-pressing roller (19) and a second hot-pressing roller (20) which are arranged along the up-down direction are arranged between the preheating unit (28) and the cooling unit (29), a cathode transfer protection belt (44) and an anode transfer protection belt (45) are arranged between the first hot-pressing roller (19) and the second hot-pressing roller (20), the anode transfer protection belt (45) is circularly conveyed by a first driving roller (11), a second driving roller (12), a third driving roller (13) and a fourth driving roller (14), the cathode transfer protection belt (44) is circularly conveyed by a fifth driving roller (15), a sixth driving roller (16), a seventh driving roller (17) and an eighth driving roller (18), the first driving roller (11) and the fifth driving roller (15) are arranged at the upstream of the preheating unit (28), the fourth driving roller (14) and the sixth driving roller (16) are arranged at the downstream of the cooling unit (29), and the cathode transfer protection belt (44) is used for thermally pressing and separating the first, the anode transfer protective tape (45) is used for isolating a second hot-pressing roller (20) and an anode transfer film (43), the first hot-pressing roller (19) and the second hot-pressing roller (20) are used for uniformly heating and pressurizing a cathode transfer protective tape (44) and the anode transfer protective tape (45), pressure and heat are transferred to a proton membrane (40) and a transfer film, and the CCM take-up roller (27) is used for CCM (47) of the anode transfer film of the take-up belt.

2. The apparatus of claim 1, wherein: still include negative pole rendition membrane unwinding roller (5), negative pole rendition membrane winding roll (24), negative pole rendition membrane unwinding roller (5) and positive pole rendition membrane unwinding roller (8) mutual disposition, negative pole rendition membrane unwinding roller (5) are used for releasing negative pole rendition membrane (42) of adhering to cathode catalyst (48), negative pole rendition membrane winding roll (24) set up the upper reaches at humidification unit (30), negative pole rendition membrane winding roll (24) are used for rolling negative pole rendition membrane (46).

3. The apparatus of claim 2, wherein: proton membrane unreels a pair of guide roll (3) of arranging from top to bottom between roller (1) and proton membrane notacoria wind-up roll (2), a pair of proton membrane altitude mixture control roller (4) of arranging from top to bottom are equipped with in guide roll (3) low reaches, cathode rendition membrane altitude mixture control roller (4) low reaches of arranging from top to bottom are equipped with cathode rendition membrane azimuth adjustment roller (7), positive pole rendition membrane azimuth adjustment roller (10), be equipped with between cathode rendition membrane azimuth adjustment roller (7) and cathode rendition membrane unreel roller (5) negative pole rendition membrane guide roll (6), be equipped with positive pole rendition membrane guide roll (9) between positive pole rendition membrane azimuth adjustment roller (10) and positive pole rendition membrane unreel roller (8).

4. The apparatus of claim 3, wherein: humidification unit (30) upper reaches are equipped with a pair of negative pole rendition membrane guide roll (22) of arranging from top to bottom, are located and are equipped with negative pole rendition membrane guide roll (23) between negative pole rendition membrane guide roll (22) of upside and negative pole rendition membrane wind-up roll (24), negative pole rendition membrane guide roll (22) upper reaches are equipped with a pair of CCM rectification roller (21) of arranging from top to bottom, humidification unit (30) low reaches are equipped with a pair of CCM clearance adjustment roller (25) of arranging from top to bottom, be equipped with CCM guide roll (26) between CCM clearance adjustment roller (25) and CCM wind-up roll (27.

5. The apparatus of claim 1, wherein: the cathode transfer protection belt (44) and the anode transfer protection belt (45) are made of glass fiber reinforced PTFE materials.

6. The apparatus of claim 1, wherein: the preheating unit (28) comprises an upper row of rollers (31a) and a lower row of rollers (31b), a hot air inlet or a far infrared heating element (32) is arranged between the adjacent rollers of the upper row of rollers (31a) and the lower row of rollers (31b), the upper row of rollers (31a) and the lower row of rollers (31b) are arranged in a staggered mode, and a near sine or S-shaped channel is formed between the upper row of rollers (31a) and the lower row of rollers (31 b).

7. The apparatus of claim 1, wherein: the hot pressing roller I (19) is formed by wrapping silica gel outside a steel roller or an aluminum alloy roller, the hot pressing roller II (20) is a steel roller or an aluminum alloy roller, the hot pressing roller I (19) or the hot pressing roller II (20) moves up and down along the direction vertical to the cathode transfer protection belt (44) or the anode transfer protection belt (45), the axial lengths of the hot pressing roller I (19) and the hot pressing roller II (20) are consistent with the length of a transfer area of the CCM, the heating temperature is 120-180 ℃, and the heating mode is oil heating, electromagnetic induction or electric heating.

8. The apparatus of claim 1, wherein: the cooling unit (29) adopts a water cooling mode, the cooling unit (29) comprises an upper row of water cooling rollers (33a) and a lower row of water cooling rollers (33b), the upper row of water cooling rollers (33a) and the lower row of water cooling rollers (33b) are arranged in a staggered mode, a near sine or S-shaped channel is formed between the upper row of water cooling rollers (33a) and the lower row of water cooling rollers (33b), a water inlet (34) is arranged at one end of the upper row of water cooling rollers (33a) and the lower row of water cooling rollers.

9. The apparatus of claim 1, wherein: the cooling unit (29) adopts an air cooling mode, the cooling unit (29) comprises an upper row of rollers (35a) of the cooling unit, a lower row of rollers (35b) of the cooling unit and a forced air cooler (36), the upper row of rollers (35a) of the cooling unit and the lower row of rollers (35b) of the cooling unit are arranged in a staggered mode, and a near-sine or S-shaped channel is formed between the upper row of rollers and the lower row of rollers.

10. A method for preparing membrane electrode CCM by pattern format continuous transfer printing is characterized by comprising the following steps:

1) and (3) an unreeling stage: the method comprises the steps that a proton membrane (40) is released by a proton membrane unwinding roller (1), a proton membrane protective film (41) is wound by a proton membrane backing film winding roller (2), a cathode transfer film (42) with a cathode catalyst is unwound by a cathode transfer film unwinding roller (5) and guided by a cathode transfer film guide roller (6), and meanwhile, an anode transfer film (43) with an anode catalyst is released by an anode transfer film unwinding roller (8) and guided by an anode transfer film guide roller (9); the interval between the proton membrane (40), the cathode transfer membrane (42), the anode transfer membrane (43), the cathode transfer protective tape (44) and the anode transfer protective tape (45) is jointly adjusted by a proton membrane height adjusting roller (4), a cathode transfer membrane orientation adjusting roller (7) and an anode transfer membrane orientation adjusting roller (10), and the cathode transfer membrane (42), the anode transfer membrane (43) and the proton membrane (40) are controlled to have a certain included angle by the cathode transfer membrane orientation adjusting roller (7) and the anode transfer membrane orientation adjusting roller (10), so that the transfer membrane before being transferred is prevented from contacting with the proton membrane;

2) a preheating stage: heating a proton membrane (40), a cathode transfer membrane (42), an anode transfer membrane (43), a cathode transfer protective tape (44) and an anode transfer protective tape (45) to a proton membrane softening temperature range of 100-;

3) a transfer printing stage: heating the first hot-pressing roller (19) and the second hot-pressing roller (20) to 100-; keeping the first hot-pressing roller (19) fixed, controlling a cathode transfer protection belt (44) to be in contact with the first hot-pressing roller (19), when the proton membrane and the transfer membrane are detected to be drawn to the initial position of a transfer area, enabling a second hot-pressing roller (20) to approach to an anode transfer protection belt (45), heating and pressing, and transferring heat and pressure to an anode transfer membrane (43), a proton membrane (40) and a cathode transfer membrane (42); or keeping the second hot-pressing roller (20) fixed, controlling the anode transfer protection belt (45) to be contacted with the second hot-pressing roller (20), enabling the first hot-pressing roller (19) to approach the cathode transfer protection belt (44), heating and pressing, and transferring heat and pressure to the cathode transfer film (42), the proton film (40) and the anode transfer film (43); namely, the catalyst of the cathode transfer film (42) and the anode transfer film (43) is transferred to the proton membrane (40); in the transfer process, the length of the pattern format transfer is controlled by the length of a first hot-pressing roller (19) and a second hot-pressing roller (20), when the width of a CCM window is reached, the first hot-pressing roller (19) and the second hot-pressing roller (20) are separated until the proton membrane and the transfer membrane are drawn to the next transfer window, and the adjacent windows are transferred by repeatedly heating and pressing;

5) and (3) a winding stage: CCM after the deviation rectification and cooling of the CCM deviation rectification roller (21) is utilized, a cathode transfer film guide roller (22) is utilized to strip a CCM cathode back film, the cathode transfer film guide roller (23) controls a cathode transfer film (46) to be folded and advanced in a direction close to 180 degrees, then the cathode transfer film is wound by a cathode transfer film winding roller (24), the CCM (47) with the anode transfer film enters a humidifying unit (30) to be humidified, and finally the CCM is wound by a CCM winding roller (27) after being guided by a CCM guide roller (26).