CN213936257U

CN213936257U - Hydrogen fuel cell heat radiation structure

Info

Publication number: CN213936257U
Application number: CN202023198973.0U
Authority: CN
Inventors: 袁俊
Original assignee: Shanghai Hance Intelligent Technology Co ltd
Current assignee: Shanghai Hance Intelligent Technology Co ltd
Priority date: 2020-12-25
Filing date: 2020-12-25
Publication date: 2021-08-10
Anticipated expiration: 2030-12-25

Abstract

The application relates to a hydrogen fuel cell heat dissipation structure, which comprises a heat dissipation mechanism and a water cooling mechanism, wherein the heat dissipation mechanism is connected with a shell of a fuel cell; the heat dissipation mechanism comprises a plurality of first heat dissipation fins and a plurality of second heat dissipation fins, the first heat dissipation fins are fixedly connected with one side wall of the fuel cell shell, the second heat dissipation fins are fixedly connected with the four side walls of the fuel cell shell, the side wall where the first heat dissipation fins are located is perpendicular to the side wall where the second heat dissipation fins are located, the water cooling mechanism is connected with the first heat dissipation fins and the second heat dissipation fins, heat generated by the hydrogen fuel cell is transferred to the side wall of the hydrogen fuel cell shell, the heat is transferred to the first heat dissipation fins and the second heat dissipation fins which are fixedly connected with the shell, and the water cooling mechanism takes away heat in the first heat dissipation fins and the second heat dissipation fins, so that the overall heat of the hydrogen fuel cell is reduced. This application has high-efficient radiating effect.

Description

Hydrogen fuel cell heat radiation structure

Technical Field

The present application relates to the field of hydrogen fuel cells, and more particularly, to a heat dissipation structure for a hydrogen fuel cell.

Background

A hydrogen fuel cell is a power generation device that directly converts chemical energy of hydrogen and oxygen into electric energy, and the basic principle thereof is the reverse reaction of electrolyzing water. The hydrogen fuel cell has the advantages of no pollution, high power generation efficiency and the like, and has wide market application prospect in the traffic fields of vehicles, ships and the like. However, during the operation of the fuel cell, the temperature of the fuel cell is increased due to the continuous reaction, which further affects the service life of the fuel cell.

At present, chinese patent application with publication number CN1309113C discloses a fuel cell using atmospheric air as oxidant and heat sink, which includes a fuel cell stack, a plurality of blowing fans, and a plurality of suction fans, wherein the fuel cell stack includes a proton exchange membrane electrode, an air guide flow plate, and a hydrogen guide flow plate, the air guide flow plate is provided with a plurality of flow guide slots, the flow guide slots are wave-shaped, and each flow guide slot directly penetrates from one side of the air guide flow plate to the other side, after a plurality of air guide flow plates, proton exchange membrane, and hydrogen guide flow plates are stacked, one side of the whole fuel cell stack forms an air inlet, and the other side forms an air outlet, the blowing fans are arranged at the air inlet of the fuel cell stack, and the suction fans are arranged at the air outlet of the fuel cell stack. When the fuel cell works, the functions of the upper blowing fan and the lower blowing fan are exchanged with the functions of the suction fan, the heat in the fuel cell is intermittently taken out by the normal-pressure hot and humid air and blown to the hydrogen storage material bottle, and the hydrogen storage material needs to absorb heat in the hydrogen releasing process and just absorbs heat from the hot and humid air.

With respect to the related art in the above, the inventors consider that the efficiency of heat dissipation of the fuel cell by means of air blowing is low due to the poor heat conduction capability of air.

SUMMERY OF THE UTILITY MODEL

In order to improve the heat dissipation efficiency of the fuel cell, the application provides a heat dissipation structure of a hydrogen fuel cell.

The application provides a hydrogen fuel cell heat radiation structure adopts following technical scheme:

a hydrogen fuel cell heat dissipation structure comprises a heat dissipation mechanism and a water cooling mechanism, wherein the heat dissipation mechanism is connected with a shell of a fuel cell, and the water cooling mechanism is connected with the heat dissipation mechanism;

the heat dissipation mechanism comprises a plurality of first cooling fins and a plurality of second cooling fins, the first cooling fins are fixedly connected with one side wall of the fuel cell shell, the second cooling fins are multiple, the second cooling fins are fixedly connected with four side walls of the fuel cell shell, the side walls where the first cooling fins are located are perpendicular to the side walls where the second cooling fins are located, and the first cooling fins and the second cooling fins are connected with the water cooling mechanism.

Through adopting above-mentioned technical scheme, on the lateral wall of hydrogen fuel cell casing was transferred to the heat that hydrogen fuel cell produced, on heat transfer to the first fin and the second fin with casing lateral wall fixed connection thereupon, the water-cooling mechanism took away the heat in first fin and the second fin to reduce the holistic heat of hydrogen fuel cell, thereby improved hydrogen fuel cell's radiating efficiency.

Optionally, the water-cooling mechanism includes refrigerator, connecting pipe, intermediate pipe and circulation pipe, the circulation pipe has two, two the circulation pipe all with refrigerator fixed connection, one the delivery port of circulation pipe and refrigerator is linked together, another the water inlet of circulation pipe and refrigerator is linked together, the intermediate pipe has a plurality ofly, the intermediate pipe is worn to locate first fin and second fin, the intermediate pipe can be dismantled with adjacent intermediate pipe and be connected, the connecting pipe can be dismantled with the intermediate pipe at both ends and be connected, the one end of intermediate pipe and one circulation pipe fixed connection and be linked together with it.

By adopting the technical scheme, the cold water in the refrigerator flows into the intermediate pipe through the circulating pipe and the connecting pipe, and the intermediate pipe is contacted with the first radiating fin and the second radiating fin, so that the cold water in the intermediate pipe flows into the other circulating pipe and finally flows back into the refrigerator, and the heat in the first radiating fin and the second radiating fin is taken away.

Optionally, the connecting pipe includes the hose, the fixed pipe of both ends fixedly connected with of hose, fixed pipe is linked together with the hose, the one end that the hose was kept away from to fixed pipe can be dismantled with the intervalve and be connected.

Through adopting above-mentioned technical scheme, rotate the hose and conveniently flow into in the adjacent intermediate pipe with the water in the intermediate pipe.

Optionally, the end of the fixed pipe far away from the hose and the two ends of the middle pipe are both fixedly connected with connecting pieces, and the connecting pieces are in threaded connection with fixing bolts.

Through adopting above-mentioned technical scheme, rotate fixing bolt and fix two connection pieces to fix two middle pipes together.

Optionally, the cross section of the middle tube along the length direction is rectangular, and the middle tube is tightly attached to the housing of the fuel cell.

Through adopting above-mentioned technical scheme, well intermediate pipe and fuel cell casing direct contact to make things convenient for the heat in the fuel cell casing directly to transmit to in the intermediate pipe.

Optionally, one end of the fixed pipe, which is far away from the hose, and one end of the middle pipe are fixedly connected with rectangular rubber rings.

Through adopting above-mentioned technical scheme, the leakproofness between the middle pipe, between fixed pipe and the middle pipe has been improved to the rectangle rubber circle.

Optionally, the one end of well intermediate pipe and the equal fixedly connected with rectangle protruding strip of one end that the hose was kept away from to a fixed pipe, another the rectangle recess has all been seted up to the one end that the hose was kept away from to fixed pipe and the one end that the rectangle protruding strip was kept away from to well intermediate pipe, the shape size of rectangle rubber circle is the same with the shape size of rectangle protruding strip, rectangle rubber circle and rectangle protruding strip fixed connection, rectangle protruding strip is triangle-shaped with the cross-section of rectangle recess along length direction.

Through adopting above-mentioned technical scheme, arrange the rectangle rubber circle on the rectangle protrusion strip in the rectangle recess, rotate fixing bolt to the leakproofness of water-cooling mechanism has been increased.

Optionally, the cross section of the first cooling fin along the length direction is wavy.

Through adopting above-mentioned technical scheme, first fin supports hydrogen fuel cell casing, and the first fin of wave has played the cushioning effect simultaneously, has reduced rocking of hydrogen fuel cell casing, has improved hydrogen fuel cell's stability.

Optionally, the heat dissipation mechanism further includes a fixing plate, and one end of the first heat dissipation plate, which is far away from the fuel cell housing, is fixedly connected to the fixing plate.

Through adopting above-mentioned technical scheme, the fixed plate supports and is fixed first fin.

In summary, the present application includes at least one of the following beneficial technical effects:

1. according to the device, the first cooling fin, the second cooling fin, the refrigerator, the intermediate pipe, the connecting pipe and the circulating pipe are arranged, heat generated by the hydrogen fuel cell is transferred to the side wall of the shell of the hydrogen fuel cell, and then is transferred to the first cooling fin and the second cooling fin which are connected with the shell. Cold water in the refrigerator flows into the intermediate pipe through the circulating pipe and the connecting pipe, and the intermediate pipe is contacted with the first radiating fin and the second radiating fin, so that the cold water in the intermediate pipe flows into the other circulating pipe and finally flows back into the refrigerator, heat in the first radiating fin and the second radiating fin is taken away, and the radiating efficiency of the hydrogen fuel cell is improved;

2. the device of this application is through having set up first fin, and first fin is the wave along length direction's cross-section, and first fin supports hydrogen fuel cell casing, and the first fin of wave has played the cushioning effect simultaneously, has reduced rocking of hydrogen fuel cell casing, has improved hydrogen fuel cell's stability.

Drawings

Fig. 1 is a schematic structural diagram of a heat dissipation structure of a hydrogen fuel cell according to an embodiment of the present application.

Fig. 2 is a schematic structural diagram of a first heat sink in a heat dissipation structure of a hydrogen fuel cell according to an embodiment of the present disclosure.

Fig. 3 is a schematic view of a connection structure between intermediate pipes of a heat dissipation structure of a hydrogen fuel cell according to an embodiment of the present disclosure.

Fig. 4 is a schematic view of a connection structure between an intermediate pipe and a fixed pipe of a heat dissipation structure of a hydrogen fuel cell according to an embodiment of the present disclosure.

Description of reference numerals: 1. a heat dissipation mechanism; 11. a first heat sink; 12. a second heat sink; 13. a fixing plate; 2. a water cooling mechanism; 21. a refrigerator; 22. a connecting pipe; 221. a hose; 222. a fixed tube; 23. an intermediate pipe; 24. a circulating pipe; 25. connecting sheets; 26. fixing the bolt; 27. a rectangular protruding strip; 28. a rectangular groove.

Detailed Description

The present application is described in further detail below with reference to figures 1-4.

The embodiment of the application discloses a hydrogen fuel cell heat dissipation structure. Referring to fig. 1, a heat dissipation structure of a hydrogen fuel cell includes a heat dissipation mechanism 1 and a water cooling mechanism 2. The heat dissipation mechanism 1 is connected with the shell of the fuel cell, and the water cooling mechanism 2 is connected with the heat dissipation mechanism 1. The heat generated by the hydrogen fuel cell is transferred to the side wall of the hydrogen fuel cell shell and further transferred to the heat dissipation mechanism 1 connected with the shell, and the water cooling mechanism 2 takes away the heat on the heat dissipation mechanism 1, so that the heat dissipation efficiency of the hydrogen fuel cell is improved.

Referring to fig. 1, the heat dissipation mechanism 1 includes a plurality of first heat dissipation fins 11 and a plurality of second heat dissipation fins 12. The first heat radiation fins 11 are welded to one side wall of the fuel cell case, and the second heat radiation fins 12 are welded to four side walls of the fuel cell case. The side wall where the first heat sink 11 is located is perpendicular to the side wall where the second heat sink 12 is located. The first cooling fin 11 and the second cooling fin 12 are both connected to the water cooling mechanism 2. The heat on the fuel cell shell is transferred to the first radiating fin 11 and the second radiating fin 12 which are fixedly connected with the side wall of the shell, and the water cooling mechanism 2 takes away the heat in the first radiating fin 11 and the second radiating fin 12, so that the overall heat of the hydrogen fuel cell is reduced.

Referring to fig. 1, the heat dissipation mechanism 1 further includes a fixing plate 13, and an end of the first heat dissipation plate 11 away from the fuel cell housing is welded to the fixing plate 13. The fixing plate 13 supports the first heat sink 11.

Referring to fig. 2, the first heat sink 11 has a wave-shaped cross section along the length direction, and the length direction of the first heat sink 11 is parallel to the plane of the fixing plate 13. The first radiating fins 11 support the hydrogen fuel cell shell, and meanwhile, the wavy first radiating fins 11 play a role in buffering due to elastic deformation, so that the shaking of the hydrogen fuel cell shell is reduced, and the stability of the hydrogen fuel cell is improved.

Referring to fig. 1, the water cooling mechanism 2 includes a refrigerator 21, a connection pipe 22, an intermediate pipe 23, and two circulation pipes 24. One end of each of the two circulation pipes 24 is fixedly connected with the refrigerator 21, one circulation pipe 24 is communicated with the water outlet of the refrigerator 21, and the other circulation pipe 24 is communicated with the water inlet of the refrigerator 21. The intermediate tube 23 is plural, and the intermediate tube 23 passes through the first fin 11 and the second fin 12. The middle pipe 23 is detachably connected with the adjacent middle pipe 23, the connecting pipe 22 is detachably connected with the middle pipes 23 at two ends, and one end of the middle pipe 23 is fixedly connected with and communicated with a circulating pipe 24. The cold water in the refrigerator 21 flows into the intermediate pipe 23 through the circulation pipe 24 and the connection pipe 22, and since the intermediate pipe 23 is in contact with the first and

second fins

11 and 12, the cold water in the intermediate pipe 23 flows into the other circulation pipe 24 and finally flows back into the refrigerator 21, thereby taking away the heat in the fins.

Referring to fig. 1 and 3, the connection pipe 22 includes a flexible pipe 221, both ends of the flexible pipe 221 are fixedly connected with a fixed pipe 222, the fixed pipe 222 is communicated with the flexible pipe 221, and one end of the fixed pipe 222 far away from the flexible pipe 221 and both ends of the middle pipe 23 are fixedly connected with connection pieces 25. The connecting piece 25 is triangular, and three corners of the connecting piece 25 are in threaded connection with fixing bolts 26. The fixing bolts 26 are turned to fix the two connecting pieces 25, thereby fixing the two intermediate pipes 23 together. The rotating hose 221 facilitates the flow of water from the mouth of one intermediate tube 23 into the adjacent intermediate tube 23.

Referring to fig. 3, the cross section of the intermediate pipe 23 in the longitudinal direction is rectangular, and the intermediate pipe 23 is closely attached to the case of the fuel cell. The intermediate pipe 23 is in direct contact with the fuel cell housing, thereby facilitating the direct transfer of heat from the fuel cell housing to the intermediate pipe 23.

Referring to fig. 3 and 4, rectangular protruding strips 27 are welded to one end of the middle pipe 23 and one end of one fixed pipe 222 away from the hose 221, and rectangular grooves 28 are formed in one end of the other fixed pipe 222 away from the hose 221 and one end of the middle pipe 23 away from the rectangular protruding strips 27. The rectangular protruding strips 27 are bonded with rectangular rubber rings, the shapes and the sizes of the rectangular rubber rings are the same as those of the rectangular protruding strips 27, and the sections of the rectangular protruding strips 27 and the rectangular grooves 28 in the length direction are both triangular. The rectangular rubber ring on the rectangular protruding strip 27 is placed in the rectangular groove 28, and the fixing bolt 26 is rotated, so that the sealing performance of the water cooling mechanism 2 is improved.

The implementation principle of the hydrogen fuel cell heat dissipation structure in the embodiment of the application is as follows: the heat generated by the hydrogen fuel cell is transferred to the side wall of the hydrogen fuel cell case, and further, to the first and second

heat radiation fins

11 and 12 attached to the case. The cold water in the refrigerator 21 flows into the intermediate pipe 23 through the circulation pipe 24 and the connection pipe 22, and since the intermediate pipe 23 is in contact with the first and

second fins

11 and 12, the cold water in the intermediate pipe 23 flows into the other circulation pipe 24 and finally flows back into the refrigerator 21, thereby taking away the heat in the first and

second fins

11 and 12.

The first fin 11 has a wavy cross section along the length direction. The first radiating fins 11 support the hydrogen fuel cell shell, and meanwhile, the wavy first radiating fins 11 play a role in buffering, so that the shaking of the hydrogen fuel cell shell is reduced, and the stability of the hydrogen fuel cell is improved.

The above embodiments are preferred embodiments of the present application, and the protection scope of the present application is not limited by the above embodiments, so: all equivalent changes made according to the structure, shape and principle of the present application shall be covered by the protection scope of the present application.

Claims

1. A hydrogen fuel cell heat dissipation structure, characterized in that: the fuel cell comprises a heat dissipation mechanism (1) and a water cooling mechanism (2), wherein the heat dissipation mechanism (1) is connected with a shell of the fuel cell, and the water cooling mechanism (2) is connected with the heat dissipation mechanism (1);

radiating mechanism (1) includes first fin (11) and second fin (12), first fin (11) have a plurality ofly, a lateral wall fixed connection of first fin (11) and fuel cell casing, second fin (12) have a plurality ofly, second fin (12) fixed connection is in four lateral walls of fuel cell casing, the lateral wall at first fin (11) place is perpendicular with the lateral wall at second fin (12) place, first fin (11) and second fin (12) all are connected with water cooling mechanism (2).

2. A hydrogen fuel cell heat dissipation structure as defined in claim 1, wherein: the water-cooling mechanism (2) comprises a refrigerator (21), a connecting pipe (22), an intermediate pipe (23) and a circulating pipe (24), the circulating pipe (24) is provided with two circulating pipes, two circulating pipes (24) are fixedly connected with the refrigerator (21), one circulating pipe (24) is communicated with a water outlet of the refrigerator (21), the other circulating pipe (24) is communicated with a water inlet of the refrigerator (21), the intermediate pipe (23) is provided with a plurality of pipes, the intermediate pipe (23) is arranged in a penetrating mode on a first radiating fin (11) and a second radiating fin (12), the intermediate pipe (23) is detachably connected with the adjacent intermediate pipe (23), the connecting pipe (22) is detachably connected with the intermediate pipes (23) at two ends, and one end of the intermediate pipe (23) is fixedly connected with the circulating pipe (24) and communicated with the intermediate pipe.

3. A hydrogen fuel cell heat dissipation structure according to claim 2, characterized in that: the connecting pipe (22) comprises a hose (221), two ends of the hose (221) are fixedly connected with a fixed pipe (222), the fixed pipe (222) is communicated with the hose (221), and one end, far away from the hose (221), of the fixed pipe (222) is detachably connected with the middle pipe (23).

4. A hydrogen fuel cell heat dissipation structure according to claim 3, characterized in that: the one end of fixed pipe (222) is kept away from hose (221) and the both ends of intermediate pipe (23) all fixedly connected with connection piece (25), threaded connection has fixing bolt (26) on connection piece (25).

5. A hydrogen fuel cell heat dissipation structure according to claim 4, characterized in that: the section of the middle pipe (23) along the length direction is rectangular, and the middle pipe (23) is tightly attached to the shell of the fuel cell.

6. A hydrogen fuel cell heat dissipation structure as defined in claim 5, wherein: one end of the fixed pipe (222) far away from the hose (221) and one end of the middle pipe (23) are fixedly connected with rectangular rubber rings.

7. A hydrogen fuel cell heat dissipation structure as defined in claim 6, wherein: the equal fixedly connected with rectangle protruding strip (27) of one end of hose (221) is kept away from in the one end of well intermediate tube (23) and a fixed pipe (222), another rectangle recess (28) have all been seted up to the one end that hose (221) were kept away from in fixed pipe (222) and the one end that rectangle protruding strip (27) were kept away from in well intermediate tube (23), the shape size of rectangle rubber circle is the same with the shape size of rectangle protruding strip (27), rectangle rubber circle and rectangle protruding strip (27) fixed connection, rectangle protruding strip (27) are triangle-shaped with rectangle recess (28) along length direction's cross-section.

8. A hydrogen fuel cell heat dissipation structure as defined in claim 7, wherein: the section of the first radiating fin (11) along the length direction is wavy.

9. A hydrogen fuel cell heat dissipation structure as defined in claim 8, wherein: the heat dissipation mechanism (1) further comprises a fixing plate (13), and one end, far away from the fuel cell shell, of the first heat dissipation fin (11) is fixedly connected with the fixing plate (13).