Fuel cell collector plate, fuel cell and new energy vehicle

Abstract

The utility model provides a fuel cell collector plate, a fuel cell and a new energy vehicle, and relates to the technical field of new energy, the fuel cell collector plate provided by the utility model is provided with a flow channel opening, and a groove is formed along the edge of the flow channel opening; the inner side of the flow channel opening is coated with the protective film, and the protective film is embedded into the groove, so that not only is the good sealing performance achieved, but also metal ions and pollution components caused by corrosion of the flow channel opening can be prevented from being separated out, and then the galvanic pile performance and catalytic activity are guaranteed.

Description

Technical Field

[0001] The utility model relates to the technical field of new energy, in particular to a fuel cell current collector plate, a fuel cell and a new energy vehicle. Background Art

[0002] During the actual operation of a fuel cell stack, due to electrochemistry and the moisture carried by the gas, serious corrosion will occur at the three - chamber inlet and outlet ends. The current collector plate will cause the precipitation of metal ions and pollutant components due to corrosion, which will further cause the attenuation of the catalyst, thus having an adverse impact on the fuel cell stack, such as reducing the performance of the fuel cell stack, damaging the activity of the catalyst, and affecting the service life of the fuel cell stack, etc. Content of the Utility Model

[0003] The purpose of the utility model is to provide a fuel cell current collector plate, a fuel cell and a new energy vehicle to alleviate the technical problem that the flow ports of the current collector plate are prone to corrosion.

[0004] In the first aspect, the fuel cell current collector plate provided by the utility model is provided with flow ports, and grooves are arranged along the edges of the flow ports;

[0005] A protective film is coated on the inner side of the flow ports, and the protective film is embedded in the grooves.

[0006] Combined with the first aspect, the utility model provides the first possible implementation manner of the first aspect, wherein, the surface of the fuel cell current collector plate is sunken to form the grooves, and the protective film is flush with the surface of the fuel cell current collector plate.

[0007] Combined with the first aspect, the utility model provides the second possible implementation manner of the first aspect, wherein, the protective film includes: a side wall portion and an edge portion connected to the side wall portion;

[0008] The side wall portion is inserted into the flow ports, and the edge portion is embedded in the grooves.

[0009] Combined with the first aspect, the utility model provides the third possible implementation manner of the first aspect, wherein, the protective film includes at least one of a polytetrafluoroethylene film, a polyvinylidene fluoride film, a rubber film and a silica gel film.

[0010] Combined with the first aspect, the utility model provides the fourth possible implementation manner of the first aspect, wherein, the flow ports include: a hydrogen inlet, a hydrogen outlet, an air inlet, an air outlet, a coolant inlet and a coolant outlet;

[0011] The hydrogen inlet, the hydrogen outlet, the air inlet, the air outlet, the coolant inlet and the coolant outlet are arranged at intervals, and the hydrogen inlet, the hydrogen outlet, the air inlet, the air outlet, the coolant inlet and the coolant outlet are respectively provided with the grooves and are respectively coated with the protective film.

[0012] Combined with the first aspect, the present invention provides a fifth possible implementation manner of the first aspect, wherein the fuel cell current collector plate is configured as a gold-plated metal plate member.

[0013] Combined with the first aspect, the present invention provides a sixth possible implementation manner of the first aspect, wherein the protective film is snap-fitted, adhesively bonded or interference-fitted with the fluid port.

[0014] In a second aspect, the fuel cell provided by the present invention includes the fuel cell current collector plate described in the first aspect.

[0015] Combined with the second aspect, the present invention provides a first possible implementation manner of the second aspect, wherein the fuel cell current collector plate is attached to a graphite plate, and a sealing strip is provided between the fuel cell current collector plate and the graphite plate to seal the fluid port.

[0016] In a third aspect, the new energy vehicle provided by the present invention is configured with the fuel cell described in the second aspect.

[0017] The embodiments of the present invention bring the following beneficial effects: The fuel cell current collector plate is provided with a fluid port, a groove is provided along the edge of the fluid port, a protective film is coated on the inner side of the fluid port, and the protective film is embedded in the groove. The fluid port is protected by the protective film, and the protective film is embedded in the groove to keep the surface of the fuel cell current collector plate flat. It not only has good sealing performance, but also can avoid the precipitation of metal ions and pollution components caused by corrosion of the fluid port, thereby ensuring the performance of the stack and the catalytic activity.

[0018] To make the above objects, features and advantages of the present invention more obvious and understandable, the following specific preferred embodiments are given below and are described in detail in conjunction with the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the specific implementation manners of the present invention or the technical solutions in the related art, the following will briefly introduce the drawings required to be used in the description of the specific implementation manners or the related technical solutions. Obviously, the drawings in the following description are some implementation manners of the present invention. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0020] Figure 1Explosion view of the current collector plate of the fuel cell provided by the embodiment of the present utility model;

[0021] Figure 2 Partial cross-sectional view of the fluid passage opening of the current collector plate of the fuel cell provided by the embodiment of the present utility model.

[0022] Icon: 100 - fluid passage opening; 101 - groove; 110 - hydrogen inlet; 120 - hydrogen outlet; 130 - air inlet; 140 - air outlet; 150 - coolant inlet; 160 - coolant outlet; 200 - protective film; 210 - side wall portion; 220 - edge portion. Detailed implementation manners

[0023] Next, the technical solutions of the present utility model will be clearly and completely described in conjunction with the accompanying drawings. Obviously, the described embodiments are part of the embodiments of the present utility model, rather than all of them. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present utility model.

[0024] In the description of the present utility model, it should be noted that the orientation or positional relationship indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present utility model. In addition, the terms "first", "second", "third" are only used for descriptive purposes and cannot be construed as indicating or implying relative importance. Physical quantities in the formulas, unless otherwise specifically marked, should be understood as the basic quantities of the basic units of the International System of Units, or the derived quantities derived from the basic quantities through mathematical operations such as multiplication, division, differentiation, or integration.

[0025] In the description of the present utility model, it should be noted that unless otherwise clearly specified and limited, the terms "installed", "connected", "connected" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific situations.

[0026] As Figure 1 shown, the current collector plate of the fuel cell provided by the embodiment of the present utility model is provided with a fluid passage opening 100, and a groove 101 is provided along the edge of the fluid passage opening 100; a protective film 200 is coated inside the fluid passage opening 100, and the protective film 200 is embedded in the groove 101.

[0027] Specifically, the protective film 200 covers the fluid port 100 and maintains the flat surface of the fuel cell current collector plate by embedding the protective film 200 into the groove 101. It not only has good sealing performance but also can avoid the precipitation of metal ions and pollution components caused by corrosion of the fluid port 100, thereby ensuring the performance of the stack and the catalytic activity.

[0028] In the embodiment of the present utility model, the surface of the fuel cell current collector plate is recessed to form a groove 101, and the protective film 200 is flush with the surface of the fuel cell current collector plate.

[0029] Among them, the thickness dimension of the protective film 200 is adapted to the groove 101 to ensure that the protective film 200 is flush with the surface of the fuel cell current collector plate. When the fuel cell is assembled, both the current collector plate and the protective film 200 are closely attached to the sealing strip on the graphite plate, which can ensure that each flow channel does not leak externally or cross-leak.

[0030] As Figure 1 and Figure 2 shown, the protective film 200 includes: a side wall portion 210 and an edge portion 220 connected to the side wall portion 210; the side wall portion 210 is inserted into the fluid port 100, and the edge portion 220 is embedded into the groove 101.

[0031] By covering the inner side wall of the fluid port 100 with the side wall portion 210 and embedding the edge portion 220 into the groove 101, the flat surface of the current collector plate and the protective film 200 can be ensured, thereby avoiding corrosion, maintaining the performance of the stack, and ensuring the service life of the stack from being affected by metal ions and pollutants generated by corrosion.

[0032] Furthermore, the protective film 200 includes at least one of a polytetrafluoroethylene film, a polyvinylidene fluoride film, a rubber film, and a silicone film. Among them, the protective film 200 can be processed by an integral molding method, having the technical advantages of being easy to process and having a lower production cost.

[0033] As Figure 1 shown, the fluid port 100 includes: a hydrogen inlet 110, a hydrogen outlet 120, an air inlet 130, an air outlet 140, a coolant inlet 150, and a coolant outlet 160; the hydrogen inlet 110, the hydrogen outlet 120, the air inlet 130, the air outlet 140, the coolant inlet 150, and the coolant outlet 160 are arranged at intervals, and the hydrogen inlet 110, the hydrogen outlet 120, the air inlet 130, the air outlet 140, the coolant inlet 150, and the coolant outlet 160 are respectively provided with grooves 101 and are respectively covered with the protective film 200.

[0034] By respectively arranging the protective film 200 at each inlet and outlet port, corrosion of each port can be avoided, and the surfaces of each port are flat and have good sealing performance, which can avoid leakage and cross-leakage problems.

[0035] It should be noted that the fuel cell current collector plate is configured as a gold-plated metal plate. To improve the corrosion resistance of the current collector plate, the surface of the current collector plate made of red copper is usually gold-plated, and a protective film 200 is wrapped at the fluid port 100 to avoid corrosion.

[0036] In this embodiment, the protective film 200 and the fluid port 100 are tightly connected by means of snap connection, bonding or interference fit, which makes the assembly and processing more convenient and the processing cost lower.

[0037] As Figure 1 shown, the fuel cell provided by the embodiment of the present utility model includes the fuel cell current collector plate described in the above embodiment. The technical effects of the fuel cell with the above current collector plate will not be elaborated here.

[0038] In the embodiment of the present utility model, the fuel cell current collector plate is attached to the graphite plate, and a sealing strip is provided between the fuel cell current collector plate and the graphite plate to seal the fluid port 100, so as to ensure that each fluid port 100 is well sealed and prevent fluid leakage and cross-leakage.

[0039] The new energy vehicle provided by the embodiment of the present utility model is configured with the fuel cell described in the above embodiment, which can effectively avoid corrosion of each fluid port 100 of the current collector plate, and further avoid the precipitation of metal ions and pollution components caused by corrosion, and can better guarantee the performance of the fuel cell.

[0040] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present utility model and are not intended to limit them; although the present utility model has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that they can still modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements on some or all of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the present utility model.

Claims

1. A fuel cell current collector plate, characterized in that, The fuel cell current collector plate is provided with a fluid passage opening (100), and a groove (101) is provided along the edge of the fluid passage opening (100); A protective film (200) is coated inside the fluid passage opening (100), and the protective film (200) is embedded in the groove (101).

2. The fuel cell current collector plate according to claim 1, characterized in that, The surface of the fuel cell current collector plate is recessed to form the groove (101), and the protective film (200) is flush with the surface of the fuel cell current collector plate.

3. The fuel cell current collector plate according to claim 1, characterized in that, The protective film (200) includes: a side wall portion (210) and an edge portion (220) connected to the side wall portion (210); The side wall portion (210) is inserted into the fluid passage opening (100), and the edge portion (220) is embedded in the groove (101).

4. The fuel cell current collector plate according to claim 1, wherein, The protective film (200) includes at least one of a polytetrafluoroethylene film, a polyvinylidene fluoride film, a rubber film, and a silica gel film.

5. The fuel cell current collector plate according to claim 1, wherein The fluid passage opening (100) includes: a hydrogen inlet (110), a hydrogen outlet (120), an air inlet (130), an air outlet (140), a coolant inlet (150), and a coolant outlet (160); The hydrogen inlet (110), the hydrogen outlet (120), the air inlet (130), the air outlet (140), the coolant inlet (150), and the coolant outlet (160) are arranged at intervals, and the hydrogen inlet (110), the hydrogen outlet (120), the air inlet (130), the air outlet (140), the coolant inlet (150), and the coolant outlet (160) are respectively provided with the groove (101) and are respectively coated with the protective film (200).

6. The fuel cell current collector plate according to claim 1, characterized in that, The fuel cell current collector plate is configured as a gold-plated metal plate member.

7. The fuel cell current collector plate according to claim 1, characterized in that, The protective film (200) is snap-fitted, adhesively bonded, or interference-fitted with the fluid passage opening (100).

8. A fuel cell, characterized in that, The fuel cell includes the fuel cell current collector plate according to any one of claims 1-7.

9. The fuel cell according to claim 8, characterized in that, The fuel cell current collector plate is attached to a graphite plate, and a sealing strip is provided between the fuel cell current collector plate and the graphite plate to seal the fluid passage opening (100).

10. A new energy vehicle, characterized in that, The new energy vehicle is equipped with the fuel cell according to claim 8 or 9.

Images