FUEL CELL COMPONENT AND MANUFACTURING DEVICE THEREOF

Abstract

A device for manufacturing a fuel cell component is provided. The device includes a movement device configured to load a gas diffusion layer from a magazine when the gas diffusion layer is loaded to an inlet of a conveyor and unload the gas diffusion layer from an outlet side of the conveyor. An adhesive layer forming device that is disposed over the conveyor forms an adhesive layer in an edge region of the gas diffusion layer. A drying device is configured to dry the adhesive layer formed in the gas diffusion layer. An inspection vision is configured to detect an image of the gas diffusion layer that the adhesive layer is formed. Additionally, a controller operates the movement device, the adhesive layer forming device, and the drying device and configured to use the image to determine a shape of the adhesive layer formed in the gas diffusion layer.

Claims

1. A fuel cell component, comprising: an electrolyte membrane; electrodes formed on a first surface and a second surface of the electrolyte membrane; a subgasket that covers sides of the electrolyte membrane and the electrodes and extends in a width direction or a longitudinal direction of the electrolyte membrane; a gas diffusion layer coupled to one surface of the subgasket and one surface of the electrode; and an adhesive layer formed between the subgasket and the gas diffusion layer.

2. The fuel cell component of claim 1, wherein the electrode includes: an anode electrode formed on the first surface of the electrolyte membrane; and a cathode electrode formed on the second surface of the electrolyte membrane.

3. The fuel cell component of claim 2, wherein the gas diffusion layer includes: an upper gas diffusion layer coupled to the anode electrode; and a lower gas diffusion layer coupled to the cathode electrode.

4. The fuel cell component of claim 1, wherein the adhesive layer is formed in an edge region of the gas diffusion layer except for a portion that corresponds to the electrode.

5. The fuel cell component of claim 4, wherein the adhesive layer is formed in the edge region of the gas diffusion layer not to be exposed to the exterior of the subgasket and the gas diffusion layer.

6. The fuel cell component of claim 4, wherein the adhesive layer is continuously formed along the edge region of the gas diffusion layer.

7. The fuel cell component of claim 4, wherein the adhesive layer is formed with space along the edge region of the gas diffusion layer.

8. The fuel cell component of claim 1, wherein the electrolyte membrane protrudes a distance from the sides of the electrodes and the subgasket covers the side of the electrode and the side of the electrolyte membrane.

9. A device for manufacturing a fuel cell component, comprising: a movement device configured to load a gas diffusion layer from a magazine in which the gas diffusion layer is loaded to an inlet of a conveyor and configured to unload the gas diffusion layer from an outlet side of the conveyor; an adhesive layer forming device disposed over the conveyor and configured to form an adhesive layer in an edge region of the gas diffusion layer; a drying device configured to dry the adhesive layer formed in the gas diffusion layer; an inspection vision configured to detect an image of the gas diffusion layer on which the adhesive layer is formed; and a controller configured to operate the movement device, the adhesive layer forming device, and the drying device and configured to use the image to determine a shape of the adhesive layer formed in the gas diffusion layer.

10. The device of claim 9, wherein the adhesive layer forming device is configured to form the adhesive layer in an edge region of the gas diffusion layer.

11. The device of claim 9, wherein the adhesive layer forming device is configured to continuously form the adhesive layer along an edge region of the gas diffusion layer.

12. The device of claim 9, wherein the adhesive layer forming device is configured to form the adhesive layer with space along an edge region of the gas diffusion layer.

13. The device of claim 9, wherein the drying device is configured to apply heated air to the gas diffusion layer and the adhesive layer.

14. The device of claim 9, wherein the movement device is configured to separate a slip sheet attached to the gas diffusion layer and load the gas diffusion layer from which the separator sheet is separated to an inlet of the conveyor.

15. The device of claim 9, wherein the drying device configured to use a hot plate to apply heat to the gas diffusion layer and the adhesive layer.

16. The device of claim 9, wherein the adhesive layer forming device includes: a spray nozzle configured to spray an adhesive to form the adhesive layer in an edge region of the gas diffusion layer; and an imagining device configured to detect the adhesive sprayed from the spray nozzle and image data of the sprayed adhesive.

Description

BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The above and other objects, features and advantages of the present invention will be more clearly understood from the following detailed description when taken in conjunction with the accompanying drawings, in which:

[0019] FIG. 1 is an exemplary exploded perspective view of a fuel cell component according to an exemplary embodiment of the present invention;

[0020] FIG. 2 is an exemplary cross-sectional view of the fuel cell component according to an exemplary embodiment of the present invention;

[0021] FIG. 3 is an exemplary view describing a manufacturing device of the fuel cell component according to an exemplary embodiment of the present invention;

[0022] FIG. 4 is an exemplary top plan view of the fuel cell component according to an exemplary embodiment of the present invention; and

[0023] FIG. 5 is an exemplary flowchart illustrating a manufacturing method of the fuel cell component according to an exemplary embodiment of the present invention.

DETAILED DESCRIPTION

[0024] The present disclosure will be described more fully hereinafter with reference to the accompanying drawings, in which exemplary embodiments of the disclosure are shown. However, it is to be understood that the disclosure is not limited to the disclosed embodiments, but, on the contrary, is intended to cover various modifications. As those skilled in the art would realize, the described exemplary embodiments may be modified in various different ways, all without departing from the spirit or scope of the present disclosure. On the contrary, the invention is intended to cover not only the exemplary embodiments, but also various alternatives, modifications, equivalents and other embodiments, which may be included within the spirit and scope of the invention as defined by the appended claims.

[0025] The sizes and thicknesses of the configurations shown in the drawings are provided selectively for the convenience of description, such that the present invention is not limited to those shown in the drawings and the thicknesses are exaggerated to make some parts and regions clear. However, parts which are not related with the description are omitted for clearly describing the exemplary embodiment of the present invention, and like reference numerals refer to like or similar elements throughout the specification. In the following description, dividing names of components into first, second, and the like is to divide the names because the names of the components are the same as each other, and an order thereof is not particularly limited.

[0026] The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used herein, the singular forms “a”, “an” and “the” are intended to include the plural forms as well, unless the context clearly indicates otherwise. It will be further understood that the terms “comprises” and/or “comprising,” when used in this specification, specify the presence of stated features, integers, steps, operations, elements, and/or components, but do not preclude the presence or addition of one or more other features, integers, steps, operations, elements, components, and/or groups thereof. As used herein, the term “and/or” includes any and all combinations of one or more of the associated listed items. For example, in order to make the description of the present invention clear, unrelated parts are not shown and, the thicknesses of layers and regions are exaggerated for clarity. Further, when it is stated that a layer is “on” another layer or substrate, the layer may be directly on another layer or substrate or a third layer may be disposed therebetween.

[0027] Unless specifically stated or obvious from context, as used herein, the term “about” is understood as within a range of normal tolerance in the art, for example within 2 standard deviations of the mean. “About” can be understood as within 10%, 9%, 8%, 7%, 6%, 5%, 4%, 3%, 2%, 1%, 0.5%, 0.1%, 0.05%, or 0.01% of the stated value. Unless otherwise clear from the context, all numerical values provided herein are modified by the term “about.”

[0028] Furthermore, control logic of the present invention may be embodied as non-transitory computer readable media on a computer readable medium containing executable program instructions executed by a processor, controller or the like. Examples of the computer readable mediums include, but are not limited to, ROM, RAM, compact disc (CD)-ROMs, magnetic tapes, floppy disks, flash drives, smart cards and optical data storage devices. The computer readable recording medium can also be distributed in network coupled computer systems so that the computer readable media is stored and executed in a distributed fashion, e.g., by a telematics server or a Controller Area Network (CAN).

[0029] It is understood that the term “vehicle” or “vehicular” or other similar term as used herein is inclusive of motor vehicle in general such as passenger automobiles including sports utility vehicles (SUV), buses, trucks, various commercial vehicles, watercraft including a variety of boats, ships, aircraft, and the like and includes hybrid vehicles, electric vehicles, combustion, plug-in hybrid electric vehicles, hydrogen-powered vehicles and other alternative fuel vehicles (e.g. fuels derived from resources other than petroleum).

[0030] FIG. 1 is an exemplary exploded perspective view of a fuel cell component according to an exemplary embodiment of the present invention. Referring to FIG. 1, the fuel cell component may include a membrane-electrode assembly (MEA) 100, a subgasket 120, an upper gas diffusion layer 105a, a lower gas diffusion layer 105b, and an adhesive layer 115.

[0031] As shown in FIG. 2, the MEA 100 may include a polymer electrolyte membrane 204, an anode electrode 202 formed on a first surface of the electrolyte membrane 204, a cathode electrode 200 formed on a second surface of the electrolyte membrane. The subgasket 120 may cover side surfaces of the MEA 100 and may extend toward the exterior of the MEA. The upper gas diffusion layer 105a may be coupled to an upper surface of the MEA 100 and the lower gas diffusion layer 105a may be coupled to a lower surface of the MEA. An edge surface of the upper gas diffusion layer may be coupled to the subgasket 120 and an edge surface of the lower gas diffusion layer may be coupled to the subgasket. The adhesive layer 115 may be formed in the edge surfaces of the upper gas diffusion layer 105a and the lower gas diffusion layer 105b. The edge surfaces may be disposed adjacent to the subgasket 120. In the exemplary embodiment of the present invention, the upper gas diffusion layer and the lower gas diffusion layer may be referred to as a gas diffusion layer 105, as shown in FIG. 3 and FIG. 4.

[0032] FIG. 2 is an exemplary cross-sectional view of the fuel cell component according to an exemplary embodiment of the present invention. Referring to FIG. 2, the fuel cell component may include the electrolyte membrane 204, the anode electrode 202, the cathode electrode 200, the subgasket 120, and the adhesive layer 115. The anode electrode 202 may be formed in a first surface of the electrolyte membrane 204 and the cathode electrode 200 may be formed in a second surface of the electrolyte membrane. An edge portion of the electrolyte membrane 204 may protrude (e.g., extend) a predetermined distance from side surfaces of the anode electrode 202 and the cathode electrode 200. The subgasket 120 may cover sides of the anode electrode 202, the cathode electrode 200, and the electrolyte membrane 204 and may extend in an outward direction of the sides. A thickness The subgasket 120 may have a thickness that is greater than a total thickness of the anode electrode 202, the electrolyte membrane 204, and the cathode electrode 200.

[0033] In the exemplary embodiment of the present invention, the upper gas diffusion layer 105a may be coupled to the anode electrode 202 and the lower gas diffusion layer 105b may be coupled to the cathode electrode 200. Edge surfaces of the upper gas diffusion layer 105a and the lower gas diffusion layer 105b may be coupled to an exterior surface of the subgasket 120. The adhesive layer 115 may be formed between the edge surface of the upper gas diffusion layer 105a and the exterior surface of the subgasket 120 and between the edge surface of the lower gas diffusion layer 105b and the exterior surface of the subgasket 120. In the exemplary embodiment of the present invention, the adhesive layer 115 may not be formed in the entire subgasket and may be formed only on contact surfaces disposed between the upper gas diffusion layer 105a and the subgasket 120 and between the lower gas diffusion layer 105b and the subgasket 120. Accordingly, an adhesive of the adhesive layer 115 may be prevented from flowing into the anode electrode 202 and the cathode electrode 200 and performance of a fuel cell stack may be maintained more stably.

[0034] FIG. 3 is an exemplary view describing a manufacturing device of the fuel cell component according to an exemplary embodiment of the present invention. Referring to FIG. 3, the manufacturing device of the fuel cell component may include a movement device 300, a gas diffusion layer magazine 305, a slip sheet magazine 310, a conveyor 315, an adhesive layer forming device 320, and a drying device 330, an inspection vision (e.g., or an vision inspection device) 340, and a a controller 333. In particular, the movement device 300 may be configured to discharge a slip sheet from the gas diffusion layer magazine 305 to the slip sheet magazine 310 and adsorb the gas diffusion layer 105 to load the adsorbed gas diffusion layer to an inlet of the conveyor 315.

[0035] The gas diffusion layer 105 loaded on the conveyor 315 may be transferred to the adhesive layer forming device 320. The adhesive layer forming device may be configured to coat the adhesive to a predetermined region of the gas diffusion layer to form the adhesive layer 115. The adhesive layer forming device 320 may include a spray nozzle 360 configured to spray the adhesive to form the adhesive layer and an imaging device 365 (e.g., a camera, video camera or the like) that detects (e.g., senses) the sprayed adhesive as image data. The controller 333 may use the image data to adjust an amount of the adhesive sprayed from the spray nozzle and a moving speed of the spray nozzle.

[0036] The drying device 330 may be configured to use hot air at about 100° C. to dry the gas diffusion layer 105 and the adhesion layer 115. Alternatively, a hot plate may be used to dry the gas diffusion layer and the adhesion layer. The inspection vision 340 imaging device may detect (e.g., sense) a shape of the adhesive layer 115 formed in the gas diffusion layer 105 to transmit the detected shape data to the controller 333. The controller 333 may be configured to detect the shape of the adhesive layer 115 transmitted from the inspection vision 340 to calculate a thickness, a width, and a position of the shape, to determine whether the shape is normal. The controller 333 may be configured to adjust the movement device 300 to load the gas diffusion layer 105 to the conveyor 315 or load or to unload the gas diffusion layer 105 from the conveyor 315 and may be configured to adjust the adhesive layer forming device 320 and the drying device 330. The controller 333 may include one or more microprocessors configured to be operated by a predetermined program. The program may include a set of instructions for performing the method according to the exemplary embodiment of the present invention.

[0037] FIG. 4 is an exemplary top plan view of the fuel cell component according to an exemplary embodiment of the present invention. Referring to FIG. 4, the adhesive layer 115 may be formed in an edge surface of the gas diffusion layer 105 and may be formed along a longitudinal direction (e.g., or a length direction) of the gas diffusion layer. The edge surface may be disposed at a position in a width direction of the gas diffusion layer 105. In the exemplary embodiment of the present invention, the adhesive layer 115 may be formed in an exterior side of a reaction boundary 400 that corresponds to the anode electrode 202 and the cathode electrode 200 and may be continuously formed in a preset area disposed between an exterior side of the gas diffusion layer 105 and the reaction boundary. The adhesive layer 115 may be discontinuously formed with space (e.g., or with preset intervals) in the area between the exterior side of the gas diffusion layer 105 and the reaction boundary 400.

[0038] FIG. 5 is an exemplary flowchart illustrating a manufacturing method of the fuel cell component according to an exemplary embodiment of the present invention. Referring to FIG. 5, in step S500, the controller 333 may be configured to adjust the movement device 300 to adsorb and transfer the gas diffusion layer (GDL) 105. For example, the slip sheet attached to the gas diffusion layer 105 may be discharged to a predetermined position.

[0039] In step S510, the movement device 300 may be configured to load the adsorbed gas diffusion layer 105 to the inlet of the conveyor 315. In step S520, the adhesive layer forming device 320 may be configured to form the adhesive layer 115 in a predetermined area of the gas diffusion layer 105. In step S530, the drying device 330 may be configured to dry the adhesive layer 115 by using the hot air.

[0040] Further, in S540, the inspection vision 340 may be configured to sense the shape (e.g., or the form) of the adhesive layer 115 formed in the gas diffusion layer 105 to transmit the detected shape to the controller 333 and the controller 333 may be configured to determine when the shape is normal. In S550, the movement device 300 may be configured to adsorb the gas diffusion layer 105 discharged from an outlet of the conveyor 315 to unload from the outlet of the conveyor and may load the unloaded gas diffusion layer in a predetermined place.

[0041] In the exemplary embodiment of the present invention, the width of the adhesive layer may be about 2 mm, the width of the adhesive layer dried may be about 3 mm, and temperature of the hot air may be about 100° C. The controller may be configured to separate the gas diffusion layer into a normal gas diffusion layer and an abnormal gas diffusion layer based on the shape sensed by the inspection vision when the adhesive layer is dried. The separated layers may be loaded in a predetermined place. To improve quality of the adhesive layer, an ambient temperature of the adhesive layer may be about 22±1° C. and an ambient humidity of the adhesive layer may be about 70±10%. The inspection vision may be configured to sense a thickness, a width, and a location of the adhesive layer by using a laser beam. The adhesive layer forming device may be configured to monitor a supply and a discharge amount of the adhesive in real time.

[0042] While this invention has been described in connection with what is presently considered to be exemplary embodiments, it is to be understood that the invention is not limited to the disclosed exemplary embodiments, but, on the contrary, is intended to cover various modifications and equivalent arrangements included within the spirit and scope of the appended claims.

DESCRIPTION OF SYMBOLS

[0043] 100: MEA [0044] 105a: upper gas diffusion layer [0045] 105b: lower diffusion layer [0046] 115: adhesive layer [0047] 120: subgasket [0048] 200: cathode electrode [0049] 202: anode electrode [0050] 204: electrolyte membrane [0051] 300: movement device [0052] 305: gas diffusion layer magazine [0053] 310: slip sheet magazine [0054] 315: conveyor [0055] 320: adhesive layer forming device [0056] 330: drying device [0057] 333: controller [0058] 340: inspection vision [0059] 400: reaction boundary