CN217280865U

CN217280865U - Heat radiation box body suitable for proton exchange membrane fuel cell stack

Info

Publication number: CN217280865U
Application number: CN202220460455.1U
Authority: CN
Inventors: 陈振乾; 尚康; 许波; 韩超灵
Original assignee: Southeast University
Current assignee: Southeast University
Priority date: 2022-03-04
Filing date: 2022-03-04
Publication date: 2022-08-23
Anticipated expiration: 2032-03-04

Abstract

A heat dissipation box body suitable for a proton exchange membrane fuel cell stack comprises a box body main body and a movable cover plate, wherein six surfaces of the box body main body are fully coated with radiation refrigeration materials, the box body main body is hinged to the movable cover plate, an upper box cover belongs to the movable cover plate, and an accommodating cavity is formed between the box body main body and the movable cover plate. Two round holes are reserved on the left side and the right side of the box body and used for connecting an air inlet pipe and an air outlet pipe required by the reaction of the fuel cell; the stack is made up of a plurality of groups of individual cells and is made by compression by a fuel cell stack compression device. The fuel cell stack fixing device is arranged on the bottom surface of the box body main body, and can ensure that the fuel cell stack is fixed in the box body, so that the fuel cell stack is prevented from colliding due to external force; six surfaces of the outer side of the box body main body are coated with radiation heat exchange material paint. The heat dissipation box body can absorb a large amount of heat generated in the operation process of the fuel cell stack in time on the basis of realizing the fixed placement of the fuel cell stack, so that the fuel cell stack is under a better working temperature condition, and meanwhile, the influence of dust on the operation of the fuel cell stack is reduced.

Description

Heat radiation box body suitable for proton exchange membrane fuel cell stack

Technical Field

The utility model relates to a fixed field of storing of fuel cell, concretely relates to proton exchange membrane fuel cell pile heat dissipation box body.

Background

The fuel cell is a real renewable energy source in a broad sense, and can thoroughly solve the energy crisis problem of human beings. Compared with other types of fuel cells, Proton Exchange Membrane Fuel Cells (PEMFCs) have the advantages of high efficiency, low noise, rapid start-up, long lifespan, etc., and are particularly suitable for use as mobile power sources or distributed small-sized power sources, and are considered to be the most promising fuel cells for commercialization.

Temperature control is crucial for stable operation of the PEMFC system. At low temperature, the PEMFC has larger resistance and poor performance; the resistance reduction performance becomes better with increasing temperature, but too high a temperature can cause dehydration, shrinkage and even rupture of the PEM, and the cell performance becomes worse. The PEMFC operates in a galvanic pile mode during normal operation, and the galvanic pile generates a large amount of heat, so that it is very important to control the temperature of the galvanic pile.

The patent application with the application number of CN201721250493.X named as a power battery water cooling structure discloses a power battery water cooling structure, wherein a battery body of the power battery water cooling structure comprises a plurality of battery modules, a gap part is arranged between every two adjacent battery modules, a vertically arranged water cooling plate is clamped in each gap part, one end part of each water cooling plate is connected with one end part of another adjacent water cooling plate through a module bracket, and the other end part of each water cooling plate is connected with the other end part of another adjacent water cooling plate through another module bracket.

In the patent application with the application number of CN201720692306.7 and the patent name of an air-cooled battery pack structure, an air-cooled battery pack structure is disclosed, which comprises a plurality of battery modules and air-cooled components which correspond to the battery modules and are fixedly connected with the battery modules; the battery module comprises a battery pack, a circuit board and an end plate; the air cooling assembly comprises a partition plate, an air suction fan and a heat dissipation plate; the separator corresponds to and is abutted against the side surface of the battery module, and a communicating hole is formed in the separator; the air exhaust fan corresponds to the communication hole and is fixedly connected with the partition plate; the heat dissipation plate is abutted against the surface of the partition plate and is opposite to the air exhaust fan at intervals, and a water inlet and a water outlet are formed in the heat dissipation plate; and the battery modules fixedly connected with the air cooling assembly are arranged side by side and are accommodated in the battery box.

In the prior art, the cooling water flow channel needs to be arranged in the cell stack, and the fan needs to be additionally arranged in the cell stack in the prior art, so that the volume of the cell stack or the battery box needs to be occupied, and inconvenience exists in the actual use.

SUMMERY OF THE UTILITY MODEL

Utility model purpose: the utility model aims at solving the temperature control problem of the proton exchange membrane fuel cell, and providing a heat dissipation box body which has simple structure and is suitable for the proton exchange membrane fuel cell stack and does not need to be additionally provided with additional equipment.

The technical scheme is as follows: the heat dissipation box body suitable for the proton exchange membrane fuel cell stack of the utility model is coated with the radiation heat exchange material coating on the outer surface of the heat dissipation box body; the heat dissipation box body is hexahedron, and the fuel cell stack compression assembly fixes a plurality of groups of fuel cells on the lower bottom surface of the heat dissipation box body through the cell stack fixing device; the upper top surface of the heat dissipation box body is hinged with the side surface of the heat dissipation box body and can be turned over relative to the side surface;

and a pipeline channel for connecting an air inlet pipeline and an exhaust pipeline of the fuel cell is arranged on the side surface of the heat dissipation box body.

Furthermore, the lower surface of the upper top surface is provided with a sealing strip.

Furthermore, a lock body is arranged on the heat dissipation box body, and a lock catch matched with the lock body is arranged on the upper top surface.

Further, the heat dissipation box body is a transparent box body; the diameter of the pipeline channel is 2.1-2.3 times of the diameter of the air inlet pipeline and the diameter of the exhaust pipeline.

Further, the radiation heat exchange coating is calcium sulfate or barium sulfate coating.

Further, the fuel cell stack compression assembly comprises an upper pressure plate and a lower pressure plate; the center positions of the upper pressure plate and the lower pressure plate are both provided with matched fuel monocells and battery tanks with certain depth;

the battery stack fixing device comprises a fixing rod penetrating through the lower pressing plate, connected with the upper pressing plate and a fixing seat fixed on the lower bottom surface of the heat dissipation box body;

further, the outer end face of the fixed rod is provided with threads; the upper end surface and the lower end surface of the lower pressing plate are provided with supporting nuts matched with the threads; fixing the lower pressing plate on the fixing rod through the supporting nut; and a gap is formed between the lower pressing plate and the lower bottom surface of the heat dissipation box body.

Furthermore, a limiting rod is arranged between the upper pressure plate and the lower pressure plate and around the outer frames of the plurality of groups of fuel monocells.

Has the advantages that:

the utility model discloses a radiation refrigeration's mode carries out the heat transfer to the fuel cell stack, and current water-cooling technique needs to establish the cooling water runner in the stack, and current forced air cooling technique needs to add in the stack and establishes the fan, the utility model discloses need not to add and establishes extra equipment, only need scribble at the box body surface and establish radiation heat transfer material coating, reduce the extra consumption of fuel cell system, fuel cell stack compression assembly fixes multiunit fuel monocell on fuel cell stack fixing device simultaneously, guarantees that fuel cell stack can not bump under the prerequisite that receives external force, is equipped with admission line and exhaust duct, and reducible dust is to the influence of fuel cell stack performance.

Drawings

Fig. 1 is a schematic view of the overall structure of the utility model;

fig. 2 is a schematic view of the upper top surface of the present invention;

fig. 3 is a schematic structural view of the middle and lower bottom surfaces and the limiting rod of the present invention.

Detailed Description

The present invention will be further explained with reference to the accompanying drawings.

As shown in fig. 1-3, in the present invention, the heat dissipation box body 1 is a hexahedron, and the outer surface of the heat dissipation box body 1 is coated with a radiation heat exchange material coating 4. The fuel cell stack compression assembly 5 fixes a plurality of groups of fuel single cells 6 on the lower bottom surface of the heat dissipation box body 1 through a cell stack fixing device 7; the upper top surface 8 of the heat dissipation box body 1 is hinged with the side surface of the heat dissipation box body 1 through the hinge sheet 2 and can be turned over relative to the side surface; the lower surface of the upper top surface 8 is provided with a sealing strip 9 of elastic sealing material. In order to avoid the collision of the upper top surface 8, the elastic sealing material 9 is made of rubber or sponge.

The heat dissipation box body 1 is provided with a lock body 11, and the upper top surface 8 is provided with a lock catch 10 matched with the lock body 11.

The fuel cell stack compression assembly 5 includes an upper pressure plate 51 and a lower pressure plate 52; the center positions of the upper pressure plate 51 and the lower pressure plate 52 are both provided with cell slots 53 which are matched with the fuel single cells 6 and have certain depth;

the cell stack fixing device 7 comprises a fixing rod 72 penetrating through the lower pressure plate 52 and connecting the upper pressure plate 51 and a fixing seat 71 fixed on the lower bottom surface of the heat dissipation box body 1; in order to accommodate more fuel cells 6, the fuel cell stack compression assembly 5 is required to compress the fuel cells 6, while the fuel cell stack compression assembly 5 is used in conjunction with the fuel cell stack fixture 7. In order to facilitate the placement of the fuel cell stack components, the bottom surface of the heat dissipation case 1 has 4 fuel cell stack fixing means 7.

The outer end face of the fixed rod 72 is provided with threads; the upper end surface and the lower end surface of the lower pressing plate 52 are provided with supporting nuts matched with threads; the lower pressing plate 52 is fixed on the fixing rod 72 by a support nut; the lower pressing plate 52 is provided with a through hole 55 for the fixing rod 72 to pass through; wherein, there is a gap between the lower pressing plate 52 and the lower bottom surface of the heat dissipation box 1.

Between the upper and lower

pressing plates

51 and 52, a stopper rod 54 is provided around the outer periphery of the plurality of fuel cells 6.

The side of the heat radiation box body 1 is provided with a pipeline channel 3 for connecting an air inlet pipeline and an air outlet pipeline of the fuel cell. The heat dissipation box body 1 is a transparent box body; the diameter of the pipeline passage 5 is 2.1-2.3 times of the diameter of the air inlet pipeline and the diameter of the air outlet pipeline. Wherein, the radiation heat exchange coating 4 is calcium sulfate or barium sulfate coating.

When the device is used for placing a fuel cell stack, firstly, the lock body 11 and the lock catch 10 are opened, the upper top surface 8 is opened, the fuel cell stack fixing device 5 arranged in the heat dissipation box body 1 can be seen at the moment, the upper pressing plate 51 is detached, and the fuel cells 6 are sequentially stacked on the lower pressing plate 52, wherein the first fuel cell 6 can be positioned in a cell groove on the lower pressing plate 52 in an auxiliary mode, then the fuel cells 6 are sequentially stacked on the lower pressing plate 52 in a range surrounded by the limiting rod 54, and the upper pressing plate 51 is tightly pressed and fixed; the fuel cell stack 6 elements compressed by the fuel cell stack compression assembly 5 are inserted into the fuel cell stack fixture 5, and during insertion, the 4 base posts of the compression device are aligned with the 4 fuel cell stack fixtures 7 when the fuel cell stack elements are inserted vertically. Six faces of the heat dissipation box body 1 are coated with radiation heat exchange material coatings 4 so as to ensure that the fuel cell stack operates at a proper working temperature, meanwhile, the heat dissipation box body 1 reduces the influence of impurities such as dust on the performance of the fuel cell stack, and the fuel cell stack fixing device 7 reduces the influence of external force on the fuel cell stack.

The foregoing illustrates and describes the general principles, features and advantages of the present invention. It is to be understood by those skilled in the art that the present invention is not limited to the details of the foregoing embodiments, and that the foregoing embodiments and descriptions are merely illustrative of the principles of the invention and that various changes and modifications may be made without departing from the spirit and scope of the invention, which fall within the open cut limits of the appended claims. The scope of the invention is defined by the appended claims and equivalents thereof.

Claims

1. A heat dissipation box body suitable for a proton exchange membrane fuel cell stack is characterized in that: the outer surface of the heat dissipation box body (1) is coated with a radiation heat exchange material coating (4); the heat dissipation box body (1) is a hexahedron, and a fuel cell stack compression assembly (5) fixes a plurality of groups of fuel cells (6) on the lower bottom surface of the heat dissipation box body (1) through a cell stack fixing device (7);

the upper top surface (8) of the heat dissipation box body (1) is hinged with the side surface of the heat dissipation box body (1) and can be turned over relative to the side surface;

and a pipeline channel (3) for connecting an air inlet pipeline and an air outlet pipeline of the fuel cell is arranged on the side surface of the heat dissipation box body (1).

2. The heat dissipation cartridge for a pem fuel cell stack of claim 1, wherein: and the lower surface of the upper top surface (8) is provided with a sealing strip (9).

3. The heat dissipation cartridge for a pem fuel cell stack of claim 2, wherein: the heat dissipation box body (1) is provided with a lock body (11), and the upper top surface (8) is provided with a lock catch (10) matched with the lock body (11).

4. The heat dissipation cartridge for a pem fuel cell stack of claim 3, wherein: the heat dissipation box body (1) is a transparent box body; the diameter of the pipeline channel (3) is 2.1-2.3 times of the diameter of the air inlet pipeline and the diameter of the exhaust pipeline.

5. The heat dissipation cartridge for a pem fuel cell stack of any of claims 1-4, wherein: the radiation heat exchange material coating (4) is calcium sulfate or barium sulfate coating.

6. The heat dissipation cartridge for a pem fuel cell stack of claim 2, wherein:

the fuel cell stack compression assembly (5) comprises an upper pressure plate (51) and a lower pressure plate (52); the center positions of the upper pressure plate (51) and the lower pressure plate (52) are respectively provided with a cell slot (53) which is matched with the fuel single cell (6) and has a certain depth;

the cell stack fixing device (7) comprises a lower pressing plate (52), a fixing rod (72) connected with the upper pressing plate (51) and a fixing seat (71) fixed on the lower bottom surface of the heat dissipation box body (1).

7. The heat dissipation cartridge for a pem fuel cell stack of claim 6, wherein:

the outer end face of the fixed rod (72) is provided with threads; the upper end surface and the lower end surface of the lower pressing plate (52) are provided with supporting nuts matched with the threads; fixing the lower pressing plate (52) on the fixing rod (72) through the supporting nut;

and a gap is formed between the lower pressing plate (52) and the lower bottom surface of the heat dissipation box body (1).

8. The heat dissipation cartridge for a pem fuel cell stack of claim 7, wherein: and a limiting rod (54) is arranged between the upper pressure plate (51) and the lower pressure plate (52) and surrounds the outer frames of the plurality of groups of fuel single cells (6).