Mounting structure of filter in fuel cell thermal management system

Abstract

The utility model provides a kind of mounting structure of filter in fuel cell thermal management system, comprising: flow channel plate, cover plate and filter, filter is inserted into overflow hole, and filter is positioned in overflow hole by positioning structure, filter and overflow hole are sealed by sealing washer;Corresponding overflow hole position is provided with mounting hole on flow channel plate, sealing cover is covered on mounting hole, sealing cover is detachably fixedly connected on the outer wall of flow channel plate, and mounting hole is used for filter and positioning structure to form cavity between flow channel plate and cover plate;Filter is inserted into overflow hole from the inside of overflow hole, and then filter is positioned at overflow hole by positioning structure;Corresponding overflow hole position is provided with mounting hole on flow channel plate, so that filter and positioning structure are conveniently taken out from cavity, and then filter is conveniently maintained and replaced.

Description

Technical Field

[0001] This utility model relates to a fuel cell thermal management system, specifically to an installation structure for a filter in a fuel cell thermal management system. Background Technology

[0002] The fuel cell thermal management system regulates the temperature of the fuel cell stack by controlling the flow of coolant. During the circulation process, the coolant may carry metal debris, plastic particles, debris of sealing materials, or dust from the outside, which need to be filtered out by a filter to prevent physical blockage and ensure the flow of coolant. The filter in the hydrogen fuel cell integrated cooling module and thermal management system disclosed in CN117012998A is inconvenient to replace and maintain, and its installation structure needs to be improved to facilitate maintenance or replacement. Utility Model Content

[0003] In response to the needs of the prior art, this utility model provides an installation structure for a filter in a fuel cell thermal management system, which aims to facilitate the maintenance and replacement of the filter.

[0004] An installation structure for a filter in a fuel cell thermal management system, comprising: The flow channel plate is provided with at least one flow channel; A cover plate is attached to the flow channel plate and forms a cavity with the flow channel to contain coolant; A filter is installed at the flow hole of the cover plate; The filter is inserted into the flow hole from the inside and is positioned in the flow hole by the positioning structure. The filter and the flow hole are sealed by a sealing ring. An installation hole is provided on the flow channel plate at the position corresponding to the flow hole. A sealing cover is provided on the installation hole. The sealing cover is detachably and fixedly connected to the outer wall of the flow channel plate. The installation hole is used for the filter and the positioning structure to enter and exit the cavity.

[0005] Furthermore, the positioning structure includes a snap-fit ​​assembly disposed between the filter and the flow hole. The snap-fit ​​assembly includes a snap-fit ​​block and a snap-fit ​​seat that snap into each other. The snap-fit ​​seat is located inside or outside the flow hole and is integrally disposed with the cover plate. The snap-fit ​​block is integrally disposed on the filter frame.

[0006] Furthermore, the positioning structure includes a bracket located between the filter and the sealing cap, and a conical structure on the inner wall of the flow hole. The outer end of the conical structure is a small end that stops on the filter frame. One end of the bracket is fixedly connected to the filter frame, and the other end of the bracket abuts against the sealing cap.

[0007] Furthermore, the bracket has a frustum-shaped structure, with the small end of the bracket integrated with the filter frame, and the large end of the bracket fitting against the bottom surface of the sealing cap.

[0008] Furthermore, the filter is a cylindrical structure with one end open, the filter passes through the flow hole, and the open end of the filter is its inner end and connected to the support.

[0009] Furthermore, the filter has a conical structure, with a small end at the outer end.

[0010] Further, the sealing cover includes a substrate and an annular boss integrally disposed on the inner end face of the substrate. The annular boss is inserted into the mounting hole, and a sealing ring is used to seal between the annular boss and the inner wall of the mounting hole. The substrate covers the mounting hole, and fixing ears are distributed on the edge of the substrate. The fixing ears are bolted to the outer wall of the flow channel plate.

[0011] The beneficial effects of this utility model are as follows: by inserting the filter into the flow hole from the inside of the flow hole, and then positioning the filter at the flow hole through the positioning structure; by opening the mounting hole on the flow channel plate at the position corresponding to the flow hole, it is easy to remove the filter and the positioning structure from the cavity, thereby facilitating the maintenance and replacement of the filter. Attached Figure Description

[0012] Figure 1 This is a cross-sectional structural diagram of the present invention; Figure 2 for Figure 1 Enlarged view of the structure of region A in the middle. Detailed Implementation

[0013] The present invention will now be described in detail with reference to the accompanying drawings. Embodiments of the present invention are described in detail below, examples of which are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and should not be construed as limiting the present invention. The directional terms such as left, center, right, top, and bottom in the embodiments of the present invention are only relative concepts or referenced to the normal use state of the product, and should not be considered restrictive.

[0014] First embodiment: An installation structure for a filter in a fuel cell thermal management system, such as... Figure 1 As shown, it includes: The flow channel plate 1 is provided with at least one flow channel; The cover plate 2 is bolted or welded to the flow channel plate 1 and forms a cavity with the flow channel to contain coolant. The cavity is provided with a connection part that communicates with the outside. The cavity is connected to the hydrogen fuel cell stack and the components of the thermal management system of the hydrogen fuel cell stack through the connection part. Filter 3, located at the flow hole 21 of cover plate 2, is used to filter the coolant entering the hydrogen fuel cell stack; combined with Figure 2 As shown, the filter 3 includes a frame 31 and a filter screen 32 integrally injection molded on the frame 31. The filter screen 32 is made of stainless steel to prevent large particles of impurities in the coolant or impurities that have been corroded off metal parts from entering the hydrogen fuel cell stack. The filter 3 is inserted into the flow hole 21 from the inside and is positioned in the flow hole 21 by the positioning structure 5. The filter 3 and the flow hole 21 are sealed by a sealing ring. A mounting hole 11 is provided on the flow channel plate 1 at the position corresponding to the flow hole 21. A sealing cover 4 is provided on the mounting hole 11. The sealing cover 4 is detachably and fixedly connected to the outer wall of the flow channel plate 1. The mounting hole 11 is used for the filter 3 and the positioning structure 5 to enter and exit the cavity.

[0015] The positioning structure 5 includes a bracket 51 located between the filter 3 and the sealing cap 4, and a conical structure 52 on the inner wall of the flow hole 21. The outer end of the conical structure 52 is a small end that stops on the frame 31 of the filter 3. One end of the bracket 51 is fixedly connected to the frame 31 of the filter 3, specifically as an integrated connection. The other end of the bracket 51 abuts against the sealing cap 4. The bracket 51 is a frustoconical structure. The small end of the bracket 51 is integrated with the frame 31 of the filter 3, and the large end face of the bracket 51 fits against the bottom surface of the sealing cap 4, thereby improving the stability of the bracket and thus improving the sealing performance between the frame 31 and the flow hole 21.

[0016] The filter 3 is a cylindrical structure with one open end. The filter 3 is preferably a conical structure. The filter 3 passes through the flow hole 21. The outer end of the filter 3 is the small end, and the open end of the filter 3 is its inner end and is connected to the bracket 51, thereby expanding the filtration area of ​​the filter 3. The mounting hole 11 is a round hole, and its inner diameter is larger than the maximum diameter of the filter 3 and the bracket 51, so that the filter 3 and the bracket 51 can be easily removed from the mounting hole 11. That is, the size of the mounting hole 11 must be larger than the size of the filter 3 and the bracket 51 so that the filter 3 and the bracket 51 can enter and exit the mounting hole 11.

[0017] The sealing cover 4 includes a base plate 41 and an annular boss 42 integrally disposed on the inner end face of the base plate 41. The annular boss 42 is inserted into the mounting hole 11. The annular boss 42 and the inner wall of the mounting hole 11 are sealed by a sealing ring, which is embedded on the outer wall of the annular boss 42. The base plate 41 covers the mounting hole 11. The edge of the base plate 41 is provided with fixing ears 411, which are bolted to the outer wall of the flow channel plate 1.

[0018] During operation, the coolant in the cavity enters the filter 3 through the gaps in the hollow structure on the bracket 51, and is then filtered by the filter 3 before being discharged from the cavity. When maintaining or replacing the filter 3, first remove the sealing cover 4, and then remove the filter 3 and bracket 51 from the cavity through the mounting hole 11, so that the filter 3 can be cleaned, maintained or replaced.

[0019] Second embodiment: Other technical features are the same as in the first embodiment. The positioning structure 5 includes a snap-fit ​​assembly disposed between the filter 3 and the flow hole 21. The snap-fit ​​assembly includes a snap-fit ​​block and a snap-fit ​​seat that engage with each other. The snap-fit ​​seat is located inside or outside the flow hole 21 and is integrally disposed with the cover plate 2. The snap-fit ​​block is integrally disposed on the frame 31 of the filter 3. In other embodiments, the positioning structure 5 may also be a snap-fit ​​block and a slot. The snap-fit ​​block is located inside or outside the flow hole 21 and is integrally disposed with the cover plate 2. The slot is located on the frame 31 of the filter 3.

[0020] During operation, the coolant in the cavity is filtered by filter 3 and then discharged from the cavity. When maintaining or replacing filter 3, first remove the sealing cover 4, then press filter 3 into the cavity and release the snap-fit ​​assembly between filter 3 and flow hole 21. This allows filter 3 and the snap-fit ​​assembly connected to it to be removed from the cavity through mounting hole 11, so that filter 3 can be cleaned, maintained or replaced.

[0021] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. An installation structure for a filter in a fuel cell thermal management system, comprising: The flow channel plate is provided with at least one flow channel; A cover plate is attached to the flow channel plate and forms a cavity with the flow channel to contain coolant; A filter is installed at the flow hole of the cover plate; Its features are: The filter is inserted into the flow hole from the inside and is positioned in the flow hole by the positioning structure. The filter and the flow hole are sealed by a sealing ring. An installation hole is provided on the flow channel plate at the position corresponding to the flow hole. A sealing cover is provided on the installation hole. The sealing cover is detachably and fixedly connected to the outer wall of the flow channel plate. The installation hole is used for the filter and the positioning structure to enter and exit the cavity.

2. The filter installation structure in the fuel cell thermal management system according to claim 1, characterized in that: The positioning structure includes a snap-fit ​​assembly disposed between the filter and the flow hole. The snap-fit ​​assembly includes a snap-fit ​​block and a snap-fit ​​seat that snap into each other. The snap-fit ​​seat is located inside or outside the flow hole and is integrally disposed with the cover plate. The snap-fit ​​block is integrally disposed on the filter frame.

3. The filter installation structure in the fuel cell thermal management system according to claim 1, characterized in that: The positioning structure includes a bracket located between the filter and the sealing cap, and a conical structure on the inner wall of the flow hole. The outer end of the conical structure is a small end that stops on the filter frame. One end of the bracket is fixedly connected to the filter frame, and the other end of the bracket abuts against the sealing cap.

4. The filter installation structure in the fuel cell thermal management system according to claim 3, characterized in that: The bracket has a frustum-shaped structure. The small end of the bracket is integrated with the filter frame, and the large end of the bracket fits against the bottom surface of the sealing cap.

5. The filter installation structure in the fuel cell thermal management system according to claim 3, characterized in that: The filter is a cylindrical structure with one end open. The filter passes through the flow hole, and the open end of the filter is its inner end and connected to the support.

6. The filter installation structure in the fuel cell thermal management system according to claim 5, characterized in that: The filter has a conical structure, with the outer end being the smaller end.

7. The filter installation structure in the fuel cell thermal management system according to claim 1, characterized in that: The sealing cap includes a base plate and an annular boss integrally disposed on the inner end face of the base plate. The annular boss is inserted into the mounting hole, and a sealing ring is used to seal between the annular boss and the inner wall of the mounting hole. The base plate covers the mounting hole, and fixing ears are distributed on the edge of the base plate. The fixing ears are bolted to the outer wall of the flow channel plate.

Images