Particle collecting device

Abstract

The utility model provides a particle collecting device, which is used for collecting particles falling from a first raw material film, and comprises a collecting piece, which comprises a first part and a second part; the driving assembly drives the collecting piece to move, the driving assembly is configured to move the collecting piece between a first working condition and a second working condition, in the first working condition, the first part is located below the first raw material film and aligned with the first raw material film to collect particles, and the second part does not collect particles, and in the second working condition, the second part does not collect particles. The second portion is located below and aligned with the first raw material film to collect the particles, while the first portion does not collect the particles. The driving assembly drives the collecting piece to move, so that the first part and the second part of the collecting piece are not aligned with the first raw material film at the same time to collect particles, the defect that a production line is frequently suspended for the purpose of replacing the collecting piece is overcome, meanwhile, replacement of the collecting piece is facilitated, and the application range of the particle collecting device is widened.

Description

Technical Field

[0001] The present application relates to a collecting device, and in particular to a particle collecting device for collecting particles falling from a raw material film. Background Art

[0002] Fuel cell systems that generate electricity by electrochemical reactions between fuel and oxidant are increasingly being used to provide electricity. The proton exchange membrane fuel cell (PEMFC) system is a widely used fuel cell system that uses hydrogen as fuel. During the operation of the PEMFC, hydrogen is supplied to the anode of the PEMFC stack and adsorbed by the catalyst to be ionized into hydrogen ions and electrons. The hydrogen ions are transferred to the cathode via the proton exchange membrane, and the electrons flow to the cathode through the external circuit to form an electric current. Therefore, the membrane electrode assembly (MEA) including the catalyst layer, the proton exchange membrane and the gas diffusion layer is the most core component in the PEMFC.

[0003] The existing method for manufacturing MEA is to press the gas diffusion layer, catalyst layer and proton exchange membrane into one by means of hot pressing, so as to complete the preparation of MEA. This makes it inevitable that raw material membranes of different types or compositions overlap each other in space in the production line. In this arrangement, there is a risk that the raw material particles of the raw material membrane located above in space will fall from the raw material membrane due to vibration and other reasons and deposit on the raw material membrane located below. In order to eliminate this risk, the existing method is to set a particle collection device between different raw material membranes. The existing particle collection device includes a protective plate and a replaceable adhesive membrane arranged on the protective plate to absorb the fallen particles.

[0004] However, due to the limited space between the raw material membranes, the protective plate cannot be set at all the positions where the raw material membranes are overlapped, and the limited space increases the difficulty of manually replacing the adhesive membrane, so that the production line often has to be stopped to remove the protective plate to replace the adhesive membrane. This not only reduces the quality of MEA products, but also reduces production efficiency.

[0005] Similar problems also exist in other particle collecting devices for collecting particles dropped from the raw film.

[0006] Therefore, it is necessary to improve the existing particle collection device. Utility Model Content

[0007] The purpose of the present application is to provide a particle collection device to solve the problems existing in the prior art.

[0008] To this end, according to one aspect of the present application, a particle collecting device is provided, which is used to collect particles fallen from a first raw material film, comprising: a collecting piece, the collecting piece comprising a first part and a second part; and a driving component, the driving component driving the collecting piece to move, wherein the driving component is configured to move the collecting piece between a first operating condition and a second operating condition, in which, in the first operating condition, the first part is located below the first raw material film and aligned with the first raw material film to collect particles, while the second part does not collect particles, and in the second operating condition, the second part is located below the first raw material film and aligned with the first raw material film to collect particles, while the first part does not collect particles.

[0009] According to an embodiment of the present application, the particle collection device operates alternately between a first operating condition and a second operating condition.

[0010] According to an embodiment of the present application, the collecting member is an adhesive film, the first part includes a plurality of first sub-films, and the second part includes a plurality of second sub-films.

[0011] According to an embodiment of the present application, a plurality of first sub-films and a plurality of second sub-films are arranged alternately.

[0012] According to one embodiment of the present application, the driving assembly includes a first roller and a second roller, the adhesive film is wound on the first roller and connected to the second roller, so that when the second roller is intermittently driven, one of the one or more second sub-films among the multiple first sub-films is wound on the second roller.

[0013] According to an embodiment of the present application, the first roller and the second roller are arranged below the first raw material film, and a protective plate is arranged below the second roller.

[0014] According to an embodiment of the present application, a plurality of first sub-films are stacked together, a plurality of second sub-films are stacked together, and the stacked plurality of first sub-films and the stacked plurality of second sub-films are arranged side by side.

[0015] According to an embodiment of the present application, the driving assembly includes a reciprocating mechanism, and the reciprocating mechanism is configured to intermittently drive the adhesive film to reciprocate.

[0016] According to one embodiment of the present application, the particle collecting device further comprises a carrier, a plurality of stacked first sub-membranes and a plurality of stacked second sub-membranes are arranged side by side on the carrier, and a driving component drives the carrier to make the adhesive film reciprocate.

[0017] According to an embodiment of the present application, the particle collection device further includes a controller, which is connected to the driving component to control the driving of the driving component.

[0018] When the collecting member is driven to move by the driving assembly so that one of the first part and the second part of the collecting member is aligned with the raw material film to collect particles, the other does not collect particles, so that replacing the collecting member no longer requires frequently removing the particle collecting device from under the raw material film, thereby preventing frequent suspension of the production line to replace the collecting member and expanding the scope of use of the particle collecting device. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The exemplary embodiments of the present application will be described in detail below with reference to the accompanying drawings. It should be understood that the embodiments described below are only used to explain the present application, rather than to limit the scope of the present application. In the accompanying drawings:

[0020] Figure 1 A schematic diagram showing a particle collection device arranged between raw material films according to an exemplary embodiment of the present application;

[0021] Figure 2 A top view of a particle collection device according to another exemplary embodiment of the present application is shown, wherein the particle collection device is in a first working state;

[0022] Figure 3 Shows Figure 2 A top view of the particle collection device shown, wherein the particle collection device is in a second operating condition;

[0023] Figure 4 shows an unfolded top view of an adhesive film according to an exemplary embodiment of the present application;

[0024] Figure 5 A top view of a particle collection device according to another exemplary embodiment of the present application is shown. DETAILED DESCRIPTION

[0025] The preferred embodiments of the present application are described in detail below with reference to examples. In the embodiments of the present application, the present application is described by taking a particle collection device for a membrane electrode assembly production line for a fuel cell as an example. However, it should be understood by those skilled in the art that these exemplary embodiments do not mean any limitation to the present application. In addition, the features in the embodiments of the present application may be combined with each other unless there is a conflict. In different drawings, the same components are represented by the same figure numerals, and other components are omitted for the sake of brevity, but this does not mean that the particle collection device of the present application may not include other components. It should be understood that the size, proportional relationship and number of components of the components in the drawings are not intended to limit the present application.

[0026] It will be understood that although the terms "first", "second", etc. are used herein to describe various elements, these elements should not be limited by these terms. These terms are only used to distinguish one element from another element. For example, a first element may be referred to as a second element, and similarly, a second element may also be referred to as a first element without departing from the scope of the present disclosure.

[0027] Figure 1 A schematic diagram of a particle collecting device 100 disposed between a first raw film 200 and a second raw film 300 according to an exemplary embodiment of the present application is shown. Figure 2 1 shows a top view of a particle collection device 100 according to another exemplary embodiment of the present application, wherein the particle collection device 100 is in a first working state; Figure 3 Shows Figure 2 The particle collection device 100 is shown in a top view, wherein the particle collection device 100 is in a second working state. It should be noted that, for ease of understanding, the components in the same figure are not drawn to scale, and in fact, the size of each component can be varied to suit different working areas 101.

[0028] According to an exemplary embodiment of the present application, a particle collecting device 100 is provided, which is used to collect particles dropped from a first raw material film 200. Generally, the particle collecting device 100 includes a collecting member 110 for collecting particles and a driving assembly 120, wherein the collecting member 110 is connected to the driving assembly 120, so that the driving assembly 120 can drive the collecting member 110 to move. Figure 1 The adhesive film is shown as the collecting member 110, but it is not limited thereto. For example, the collecting member may also be a carrier belt, or alternatively, the collecting member may be additionally arranged on other components (such as a carrier) to achieve the function of collecting particles (see Figure 5 ). Preferably, the collecting member 110 includes a first portion 110a and a second portion 110b, and the first portion 110a and the second portion 110b have sufficient area so that the first portion 110a or the second portion 110b (or any one of its sub-films 111, 112) can cover the desired coverage area alone, that is, the area of ​​the first portion 110a or the second portion 110b (or any one of its sub-films 111, 112) is larger than the area of ​​the desired coverage area to collect particles dropped from the first raw material film 200. Generally, the area of ​​the desired coverage area depends on the size of the raw material film to be prevented from falling particles, and in the case of being arranged between multiple raw material films, it also depends on the size of the raw material film to be protected. That is, the desired coverage area should be at least larger than the overlapping area between the raw material films. The desired coverage area is also referred to as the working area 101.

[0029] like Figure 2As shown, in the initial state, after the particle collection device 100 is installed, the working area 101 will be covered by the first part 110a (that is, the first part 110a is located below the first raw material film 200 and aligned with the first raw material film 200). When the operation starts, the first part 110a covering the working area 101 will assume the function of collecting particles dropped from the first raw material film 200, and the other parts of the collecting member 110 located outside the first part 110a will be protected (for example, by being wound on a roller or covered by the used collecting member 110) to prevent the particles from being collected by other parts. At this time, the operating state in which the working area 101 is covered by the first part 110a and the second part 110b is located outside the working area is called the first working condition. After a period of collection, the collecting member 110 is covered by the collected particles, resulting in a decrease in the ability to further collect particles. At this time, the driving component 120 drives the collecting member 110 to move, so that the first part 110a of the used collecting member 110 moves away, and the unused second part 110b moves to the bottom of the first raw material film 200 and aligns with the first raw material film 200 (that is, the working area 101 is covered by the second part 110b), so as to continue to collect particles dropped from the first raw material film 200. This operating state in which the working area 101 is covered by the second part 110b and the first part 110a is located outside the working area 101 is called the second operating state. In other words, the particle collection device 100 can be operated by switching from the first operating state to the second operating state by moving the collecting member 110. In this way, the particle collection device 100 can utilize the first part 110a and the second part 110b to collect fallen particles. When the first part 110a is considered to no longer be able to perform the function of collecting particles well (which can be indicated by the usage time, the length of the processed first raw material film 200, etc.), the second part 110b is used to collect particles, thereby avoiding the disadvantage of having to frequently stop the production line when replacing the collecting piece 110. At the same time, it also makes it unnecessary to remove the protective plate when replacing the used collecting piece 110, thereby providing a more convenient means of replacing the collecting piece 110.

[0030] Preferably, according to an exemplary embodiment of the present application, the particle collection device 100 switches and operates alternately between a first operating state and a second operating state. That is, when the second part 110b of the collecting member 110 has been used, the driving assembly 120 will drive the collecting member 110 to move the used second part 110b of the collecting member 110 away, and the unused first part 110a moves to a position covering the working area 101, that is, the working state of the particle collection device 100 returns to the first operating state. In this way, the particle collection device 100 can continuously and alternately collect particles using the first part 110a and the second part 110b of the collecting member 110 when there are enough collecting members 110, thereby greatly reducing the frequency of suspending the production line to replace the collecting member 110. In some embodiments (see Figure 5 ), since the collection member can be replaced without stopping the production line, the application of such a particle collection device can even completely avoid stopping the production line.

[0031] like Figure 1 As shown, as described above, according to an exemplary embodiment of the present application, the collecting member 110 is an adhesive film that plays a role in collecting particles. In this way, when the space under the first raw material film 200 is insufficient to set, for example, a protective plate, the particle collecting device 100 of the present application can also be used to collect fallen particles. In order to achieve alternating operation under the first working condition and the second working condition, preferably, in an exemplary embodiment according to the present application, the first part 110a includes a plurality of first sub-films 111, and the second part 110b includes a plurality of second sub-films 112. This will be described below in conjunction with Figure 4 Detailed description.

[0032] Figure 4 The figure shows an unfolded top view of an adhesive film according to an exemplary embodiment of the present application. It should be noted that the figure is only for better showing the composition of the adhesive film according to the embodiment of the present application. When in use, the unused adhesive film should be rolled up on the first roller 121 to provide protection for the unused adhesive film, and the used adhesive film should be rolled up on the second roller 122 so that the adhesive film can be driven by the second roller 122 to move.

[0033] As described above, in the second working state, one of the plurality of second sub-films 112 covers the working area 101. Figure 4As shown, the used first sub-membrane 111 extends on one side of the second sub-membrane 112, and the unused first sub-membrane 111 extends on the opposite side of the second sub-membrane 112. Therefore, when the second sub-membrane 112 is used and driven by the driven component 120 along the x direction to leave the working area 101, the unused first sub-membrane 111 will cover the working area 101, thereby realizing the switch from the second working condition to the first working condition. Similarly, at this time, the used second sub-membrane 112 extends on one side of the first sub-membrane 111 covering the working area 101, and the unused second sub-membrane 112 extends on the opposite side of the first sub-membrane 111 (this corresponds to the first working condition). In this way, when the driving component 120 continues to drive the viscous membrane to move along the x direction, the particle collection device 100 can switch from the first working condition to the second working condition. In general, in this embodiment, in order to realize the alternating operation of the particle collection device 100 under the first working condition and the second working condition, the plurality of first sub-membranes 111 and the plurality of second sub-membranes 112 are configured to be arranged alternately. However, embodiments without multiple sub-membranes are also envisioned, that is, only one first sub-membrane and one second sub-membrane are provided. In such embodiments, the particle collection device further includes an additional cleaning component to clean the used adhesive membrane so as to recycle the two sub-membranes.

[0034] According to an exemplary embodiment of the present application, in order to drive the movement of the adhesive film, the driving assembly 120 includes a first roller 121 and a second roller 122. When the particle collection device 100 is not started, the adhesive film is wound on the first roller 121 and extends in the working area 101 to connect with the second roller 122, so that one of the plurality of first sub-films 111 covers the working area 101. When one of the plurality of first sub-films 111 is used for a period of time and can no longer achieve the function of collecting particles, the external power source can drive the first roller 121 and the second roller 122, so that the one first sub-film 111 is wound on the second roller 122, and an unused second sub-film of the plurality of second sub-films 112 connected thereto covers the working area 101, thereby switching the particle collection device 100 from the first working state to the second working state, and vice versa. Preferably, the external power source is an electric motor, but other forms of power sources can also be used in the device of the present application.

[0035] Back to Figure 1 According to an exemplary embodiment of the present application, the first roller 121 and the second roller 122 are arranged below the first raw material film 200, thereby saving space in the production line. In this case, especially when the second raw material film 300 to be protected is arranged below the second roller 122, a protection plate 130 is further arranged below the second roller 122. The protection plate 130 can collect particles that fall from the adhesive film as the adhesive film is wound on the second roller 122, and prevent the collected particles from contaminating the second raw material film 300 below the protection plate 130.

[0036] Preferably, the first roller 121, the second roller 122 and the adhesive film can form an integrated collecting assembly. In this way, it is not necessary to separately assemble the first roller 121, the second roller 122 or set the adhesive film, but the collecting assembly can be disassembled as a whole and a new collecting assembly can be assembled, thereby realizing quick replacement of the collecting assembly.

[0037] Figure 5 A top view of a particle collection device 100 according to another embodiment of the present application is shown.

[0038] According to another exemplary embodiment of the present application, as shown in the figure, a plurality of first sub-films 111 are stacked together and a plurality of second sub-films 112 are stacked together. In this way, when a sub-film placed on the uppermost layer of the plurality of first sub-films 111 (or a plurality of second sub-films 112) is to be replaced, the adhesive film can be simply replaced by removing this sub-film. Preferably, the replacement is performed before switching to the corresponding working condition (i.e., the first sub-film 111 is replaced before switching to the first working condition, and the second sub-film 112 is replaced before switching to the second working condition) to prevent contamination by protecting the sub-film placed thereunder with the sub-film already used. The replacement can be performed manually, or alternatively can be performed automatically by a component connected to a controller, which will be described in detail below. In addition, in order to facilitate switching between the first working condition and the second working condition, preferably, the stacked plurality of first sub-films 111 and the stacked plurality of second sub-films 112 are arranged side by side.

[0039] Preferably, the driving assembly 120 includes a reciprocating mechanism (not shown), which is configured to intermittently drive the adhesive film to reciprocate. When the stacked multiple first sub-films 111 cover the working area 101, the stacked multiple first sub-films 111 are used to collect particles. Subsequently, the adhesive film is translated under the drive of the driving assembly 120, so that the stacked multiple second sub-films 112 cover the working area 101 to collect particles. This can thus achieve the switching between the first working state and the second working state of the particle collection device 110.

[0040] In addition, according to an exemplary embodiment of the present application, as shown in the figure, the particle collection device 100 further includes a carrier 140, and the stacked plurality of first sub-films 111 and the stacked plurality of second sub-films 112 are arranged side by side on the carrier 140. Thus, in this embodiment, the driving assembly 120 is not directly connected to the adhesive film to drive the adhesive film, but indirectly drives the adhesive film disposed thereon to reciprocate by driving the carrier 140. For example, the carrier 140 may be a protective plate in the prior art to protect the second raw material film 300 disposed thereunder, or may be a tray, but is not limited thereto.

[0041] In order to realize automatic control of the particle collection device 100, according to an exemplary embodiment of the present application, the particle collection device 100 also includes a controller (not shown), which is connected to the drive assembly 120 and is connected to the components of the collection piece 110 (adhesive film) for replacement or cleaning as described above. The controller can control the frequency at which the drive assembly 120 drives the collection piece 110, as well as the moving speed of the collection piece 110. Preferably, the control is based on manually input parameters (empirical parameters) to maximize the collection efficiency. Alternatively, a visual sensor (e.g., a camera) can be additionally provided to analyze the number of particles collected on the collection piece 110 by a computer to determine the frequency of driving the collection piece 110.

[0042] The above embodiment of the present application provides a particle collection device. According to the technical solution of the present application, the driving assembly drives the collection member to move so that the first part and the second part of the collection member are not aligned with the raw material film at the same time to collect particles, and when one of the first part and the second part has been used, the other of the first part and the second part can be used to continue collecting particles, thereby not only avoiding the disadvantage of frequently pausing the production line for the purpose of replacing the collection member, but also facilitating the replacement of the collection member, and expanding the scope of use of the particle collection device.

[0043] The present application has been described in detail above in conjunction with specific embodiments. Obviously, the above description and the embodiments shown in the accompanying drawings should be understood as exemplary and do not constitute a limitation to the present application. For those skilled in the art, various modifications or changes can be made to the present application without departing from the spirit of the present application, and these modifications or changes do not depart from the scope of the present application.

Claims

1. A particle collecting device (100) for collecting particles dropped from a first raw material film (200), characterized in that: The particle collection device (100) comprises: A collecting member (110), the collecting member (110) comprising a first portion (110a) and a second portion (110b); and a driving component (120), wherein the driving component (120) drives the collecting member (110) to move, Wherein, the driving component (120) is configured to move the collecting member (110) between a first operating condition and a second operating condition, wherein in the first operating condition, the first part (110a) is located below the first raw material film (200) and is aligned with the first raw material film (200) to collect the particles, while the second part (110b) does not collect the particles, and in the second operating condition, the second part (110b) is located below the first raw material film (200) and is aligned with the first raw material film (200) to collect the particles, while the first part (110a) does not collect the particles.

2. The particle collection device (100) according to claim 1, characterized in that: The particle collection device (100) operates alternately between the first operating state and the second operating state.

3. The particle collection device (100) according to claim 2, characterized in that: The collecting member (110) is an adhesive film, the first part (110a) includes a plurality of first sub-films (111), and the second part (110b) includes a plurality of second sub-films (112).

4. The particle collection device (100) according to claim 3, characterized in that: The plurality of first sub-films (111) and the plurality of second sub-films (112) are arranged alternately.

5. The particle collection device (100) according to claim 4, characterized in that: The driving component (120) includes a first roller (121) and a second roller (122), and the adhesive film is wound on the first roller (121) and connected to the second roller (122), so that when the second roller (122) is intermittently driven, one of the multiple first sub-films (111) or one of the multiple second sub-films (112) is wound on the second roller (122).

6. The particle collection device (100) according to claim 5, characterized in that: The first roller (121) and the second roller (122) are arranged below the first raw material film (200), and a protective plate (130) is arranged below the second roller (122).

7. The particle collection device (100) according to claim 3, characterized in that: The plurality of first sub-films (111) are stacked together, the plurality of second sub-films (112) are stacked together, and the stacked plurality of first sub-films (111) and the stacked plurality of second sub-films (112) are arranged side by side.

8. The particle collection device (100) according to claim 7, characterized in that: The driving assembly (120) comprises a reciprocating mechanism, which is configured to intermittently drive the adhesive film to reciprocate.

9. The particle collection device (100) according to claim 8, characterized in that: The particle collection device (100) further comprises a carrier (140), on which the stacked plurality of first sub-membranes (111) and the stacked plurality of second sub-membranes (112) are arranged side by side, and the driving component (120) drives the carrier (140) to cause the adhesive film to reciprocate.

10. The particle collection device (100) according to any one of claims 1 to 9, characterized in that: The particle collection device (100) further comprises a controller, which is coupled to the drive assembly (120) to control the driving of the drive assembly (120).

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