Deionization device and fuel cell system

Abstract

The present application provides a deionization device and a fuel cell system, wherein the deionization device has at least a cylinder and end caps arranged on both sides of the cylinder, wherein the cylinder and the end caps on both sides form a shell with a cavity inside, wherein the filter element of the deionization device is installed in the cavity, wherein the end caps on both sides are respectively provided with a water inlet and a water outlet, wherein the water inlet and the water outlet are both provided with a protective filter screen. The above structure improves the universality of the deionization device, reduces the development cost of the mold, improves the degree of freedom of integration of the fuel cell system, and ensures the service life of the deionization device.

Description

Technical Field

[0001] The present application relates to the field of fuel cell systems, and in particular to a deionization device and a fuel cell system. Background Art

[0002] As a clean, environmentally friendly and efficient energy conversion device, fuel cells are increasingly valued by various countries as fuel cell technology matures. In particular, they have achieved rapid development in my country and their application scope is becoming wider and wider. Proton exchange membrane fuel cells (PEMFC) have the advantages of environmental protection, high efficiency, fast startup speed, and high power density. They are one of the main competitors for future transportation power systems. When hydrogen and oxygen in the air undergo electrochemical reactions to generate electricity through proton exchange membranes under the action of catalysts, in order to improve power generation efficiency, the air is usually compressed. The main purpose is to increase the concentration of oxygen so that hydrogen and oxygen have more contact opportunities under limited reaction volume, thereby improving reaction efficiency. The current fuel cell engine system is usually equipped with an air filter, air compressor, intercooler, and membrane humidifier. The air passes through the above components in turn, and then is filtered, compressed, cooled, and humidified before entering the fuel cell stack.

[0003] As a deionization device of the fuel cell system, there is a possibility that pollutants will clog the filter element during the reaction. If the filter element is clogged, the interface will be over-pressured and ruptured. In addition, if the internal filter element ruptures accidentally, the filter material will enter the fuel cell stack and require an additional filter for filtration, increasing the pressure on the fuel cell system. Utility Model Content

[0004] The present application provides a deionization device and a fuel cell system, which ensure the service life of the deionization device, while improving the universality of the deionization device and the degree of freedom of integration of the fuel cell system.

[0005] The present application provides a deionization device, which has at least a cylinder and end covers arranged on both sides of the cylinder. The shell formed by combining the cylinder and the end covers on both sides has a cavity inside, and the filter element of the deionization device is installed in the cavity. The end covers on both sides are respectively provided with a water inlet and a water outlet, and the water inlet and the water outlet are both provided with protective filter screens.

[0006] Optionally, the cylinder is a single cylinder structure or a combined cylinder structure;

[0007] The combined cylinder structure is composed of two or more single cylinder structures, and a buckling structure is provided between two or more adjacent single cylinder structures to ensure the stability of the combination of the two or more adjacent single cylinder structures.

[0008] Optionally, a buffer cavity is provided on a side of the end cover facing the cylinder, and the buffer cavity is communicated with the water inlet and the water outlet.

[0009] Optionally, a size adjustment structure is provided between the end cover and the filter element, and the size adjustment structure effectively ensures that the filter elements of different sizes can be installed in the cavity.

[0010] Optionally, the size adjustment structure includes an elastic positioning block for longitudinally adjusting the size and a sealing rubber ring for transversely adjusting the size.

[0011] Optionally, the end cover has an upper end cover and a lower end cover, the upper end cover is configured as a stepped structure, the lower end cover is a trumpet-shaped structure, and the height of the upper end cover is greater than the height of the lower end cover.

[0012] Optionally, the filter element installed inside the cylinder is a single filter element structure or a combined filter element structure.

[0013] Optionally, positioning structures are provided at both ends of the filter element, and the positioning structures are used for positioning between two adjacent filter elements and between the filter element and the lower end cover.

[0014] Optionally, the end covers on both sides are fixed to the cylinder body via a buckling structure, and a sealing structure is provided on the buckling structure to ensure the sealing of the deionization device.

[0015] The present application provides a fuel cell system, which is provided with the above-mentioned deionization device.

[0016] By implementing the above deionization device and fuel cell system, the following technical effects are achieved:

[0017] The protective net provided at the water inlet of the deionization device of the present application can intercept the solid contaminants of the coolant in the interface to avoid clogging of the filter element and intercept the pressure in the high-pressure resistant interface when the protective net is blocked to avoid the filter element and filter screen from being ruptured under pressure due to clogging; the protective net at the water outlet can prevent the filter element from accidentally rupturing and causing the filter material to enter the fuel cell stack, which can save the pipeline particle filter before entering the stack and ensure the service life of the deionization device;

[0018] The deionization device of the present application can be set as a combined structure, and a single filter element or a combined filter element can be set in the cylinder of the combined structure, which has a very high adaptability;

[0019] The size adjustment structure provided on the filter element of the present application can be used for replacing filter elements of deionization devices of various sizes and models, thereby improving the universality of the deionization device and increasing the degree of freedom of integration of the fuel cell system. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative work.

[0021] Figure 1 is a schematic diagram of the structure of a combined deionization device provided in an embodiment of the present application;

[0022] Figure 2 is a schematic cross-sectional structural diagram of a combined deionization device provided in an embodiment of the present application;

[0023] Figure 3 It is a schematic diagram of the structure of a single-cylinder deionization device provided in an embodiment of the present application;

[0024] Figure 4 It is a schematic diagram of the filter element structure provided in the embodiment of the present application;

[0025] Wherein, the accompanying drawings are marked as follows:

[0026] 1-deionization device, 10-cylinder, 11-upper end cover, 12-lower end cover, 13-filter element, 130-positioning structure, 131-sealing rubber ring, 132-sealing groove, 14-water outlet, 15-water inlet, 16-sealing layer, 17-elastic positioning column, 18-buffer chamber, 19-fastening structure, 20-protective filter. DETAILED DESCRIPTION

[0027] The technical solution of the utility model will be described clearly and completely below in conjunction with the accompanying drawings. Obviously, the described embodiments are part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0028] In the description of the present utility model, it should be noted that the orientation or positional relationship indicated by the terms "center", "up", "down", "left", "right", "vertical", "horizontal", "inside", "outside", 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 cannot be understood as a limitation on the present utility model. In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance. Among them, the terms "first position" and "second position" are two different positions, and the first feature "above", "above" and "above" the second feature include the first feature being directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. The first feature "below", "below" and "below" the second feature include the first feature being directly below and obliquely below the second feature, or simply indicates that the first feature is lower in level than the second feature.

[0029] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "install", "connect", "connect", and "set" 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 a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0030] The embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and cannot be understood as limiting the present invention.

[0031] The present application provides a combinable replaceable filter element, a deionization device and a fuel cell system, which are described in detail below.

[0032] See also Figure 1-Figure 4 A deionization device, the deionization device 1 at least comprises a cylinder 10 and end covers arranged on both sides of the cylinder 1, the inside of the shell formed by the combination of the cylinder 1 and the end covers on both sides has a cavity, the filter element 13 of the deionization device is installed in the cavity, the end covers on both sides are respectively provided with a water inlet 15 and a water outlet 14, and the water inlet 15 and the water outlet 14 are both provided with a protective filter screen 20.

[0033] More specifically, the present embodiment provides a deionization device 1, wherein the cylinder body 10 and the end covers on both sides are fixed by a snap-fit ​​structure 19, the snap-fit ​​structure 19 is used for the installation of the end covers and the cylinder body 10, and can be installed by installation processes such as threaded structure, screw structure, adhesive structure and welding structure, and a sealing layer 16 is arranged between the end covers and the cylinder body 10 for sealing; the end covers include an upper end cover 11 and a lower end cover 12, the water inlet 15 is arranged on the lower end cover 12, and the water outlet 14 is arranged on the upper end cover 11.

[0034] The upper end cover 11 is configured as a stepped structure, and a buffer chamber 18 is provided on the side of the upper end cover 11 facing the cylinder 10. The buffer chamber 18 is located at the upper step portion of the stepped structure and is connected to the water outlet 14. The protective filter screen 20 is located between the buffer chamber 18 and the water outlet 14. The protective filter screen 20 at the water outlet 14 can prevent the filter material from entering the fuel cell stack due to accidental rupture of the filter element 13, thereby eliminating the pipeline particle filter before entering the stack.

[0035] The lower end cover 12 is a trumpet-shaped structure, and the height of the lower end cover 12 is less than the height of the upper end cover 11. A buffer chamber 18 is provided on the side of the lower end cover 12 facing the cylinder 10. The buffer chamber 18 is located in the wide mouth part of the trumpet-shaped structure, and the narrow mouth part of the trumpet-shaped structure is connected to the water inlet 15. A protective filter screen 20 is provided between the narrow mouth part and the water inlet 15, which can intercept solid contaminants in the coolant in the interface to avoid clogging of the filter element 13 and intercept the pressure in the high-pressure resistant interface when the protective filter screen 20 is blocked to avoid the filter element 13 filter screen from rupture due to pressure due to blockage.

[0036] like Figure 1-Figure 2 The deionization device 1 shown adopts a combined cylinder structure, which is composed of two or more single-cylinder structures. A snap-fit ​​structure is arranged between two or more adjacent single-cylinder structures to ensure the stability of the combination of two or more adjacent single-cylinder structures. The snap-fit ​​structure may be the same as the snap-fit ​​structure between the cylinder 10 and the end cover.

[0037] like Figure 3 The deionization device 1 shown adopts a single-cylinder structure, and two ends of the single-cylinder structure are respectively fixed to the upper end cover 11 and the lower end cover 12 through a buckle structure 19.

[0038] Regardless of whether the deionization device 1 adopts a combined cylinder structure or a single cylinder structure, the filter element 13 installed inside the cylinder 10 can be set to a single filter element structure or a combined filter element structure. Figure 4 As shown, it has a core body and an upper cover and a base arranged at both ends of the core body, a filter screen is arranged on the core body and the base, and the filter screen is filled with filter material; the combined filter element structure is formed by combining two or more single filter elements.

[0039] To be more specific, a positioning structure 130 is provided on the upper cover and the base of the filter element 13, and the positioning structures 130 of the upper covers and the bases of the two filter elements 13 can cooperate for positioning; a sealing groove 132 is horizontally arranged on the core body of the filter element 13, and the sealing groove 132 is basically circumferentially arranged in the direction surrounding the core body. A plurality of sealing grooves 132 can be provided, and a sealing rubber ring 131 is provided on the sealing groove 132. A sealing rubber ring 131 can be provided on only any one of the plurality of sealing grooves 132, and there is no need to provide the sealing rubber ring 131 on all the sealing grooves 132. By fixing the sealing rubber ring 131 to different sealing grooves 132, filter elements 13 of different sizes can be installed in the cylinder 10 to achieve different deionization device performances, such as high deionization rate or low flow resistance.

[0040] To be more specific, an elastic positioning block 17 is provided above the center of the upper cover of the filter element 13. The elastic positioning block 17 is longitudinally installed between the upper filter element 13 and the upper end cover 11 to adjust the height of the combined filter element 13. Since the height of the upper end cover 11 is greater than the height of the lower end cover 12, the length of the elastic positioning block 17 is greater than the length of the positioning structure 130.

[0041] The basic concepts have been described above. Obviously, for those skilled in the art, the above detailed disclosure is only for example and does not constitute a limitation of the present application. Although not explicitly stated herein, those skilled in the art may make various modifications, improvements and amendments to the present application. Such modifications, improvements and amendments are suggested in the present application, so such modifications, improvements and amendments still belong to the spirit and scope of the exemplary embodiments of the present application.

[0042] Similarly, it should be noted that in order to simplify the description of the disclosure of this application and thus help understand one or more utility model embodiments, in the above description of the embodiments of this application, multiple features are sometimes combined into one embodiment, drawing or description thereof. However, this disclosure method does not mean that the features required by the object of this application are more than the features mentioned in the claims. In fact, the features of the embodiments are less than all the features of the single embodiment disclosed above.

[0043] The above is a detailed introduction to a combinable replaceable filter element and fuel cell system provided in the embodiments of the present application. Specific examples are used herein to illustrate the principles and implementation methods of the present invention. The description of the above embodiments is only used to help understand the method and core idea of ​​the present invention. At the same time, for technicians in this field, according to the idea of ​​the present invention, there will be changes in the specific implementation method and application scope. In summary, the content of this specification should not be understood as a limitation on the present invention.

Claims

1. A deionization device, characterized in that: The deionization device comprises at least a cylinder and end covers arranged on both sides of the cylinder. The shell formed by combining the cylinder and the end covers on both sides has a cavity inside. The filter element of the deionization device is installed in the cavity. The end covers on both sides are respectively provided with a water inlet and a water outlet, and the water inlet and the water outlet are both provided with protective filter screens.

2. The deionization device according to claim 1, characterized in that: The cylinder is a single cylinder structure or a combined cylinder structure; The combined cylinder structure is composed of two or more single cylinder structures, and a buckling structure is provided between two or more adjacent single cylinder structures to ensure the stability of the combination of the two or more adjacent single cylinder structures.

3. The deionization device according to claim 1, characterized in that: A buffer cavity is provided on one side of the end cover facing the cylinder, and the buffer cavity is communicated with the water inlet and the water outlet.

4. The deionization device according to claim 1, characterized in that: A size adjustment structure is provided between the end cover and the filter element, and the size adjustment structure effectively ensures that the filter elements of different sizes can be installed in the cavity.

5. The deionization device according to claim 4, characterized in that: The size adjustment structure comprises an elastic positioning block for longitudinally adjusting the size and a sealing rubber ring for transversely adjusting the size.

6. The deionization device according to claim 1, characterized in that: The end cover comprises an upper end cover and a lower end cover, wherein the upper end cover is arranged as a stepped structure, and the lower end cover is a trumpet-shaped structure, and the height of the upper end cover is greater than the height of the lower end cover.

7. The deionization device according to claim 1, characterized in that: The filter element installed inside the cylinder is a single filter element structure or a combined filter element structure.

8. The deionization device according to claim 6, characterized in that: Positioning structures are provided at both ends of the filter element, and the positioning structures are used for positioning between two adjacent filter elements and between the filter element and the lower end cover.

9. The deionization device according to claim 1, characterized in that: The end covers on both sides are fixed to the cylinder body via a buckling structure, and a sealing structure is provided on the buckling structure to ensure the sealing performance of the deionization device.

10. A fuel cell system, characterized in that: The fuel cell system is provided with the deionization device according to any one of claims 1-9.

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