CN216749974U

CN216749974U - Fuel cell heat dissipation device

Info

Publication number: CN216749974U
Application number: CN202220228834.8U
Authority: CN
Inventors: 蒙檬; 陈优; 周建; 陆奕
Original assignee: Edelman Zibo Hydrogen Energy Technology Co ltd
Current assignee: Edelman Zibo Hydrogen Energy Technology Co ltd
Priority date: 2022-01-27
Filing date: 2022-01-27
Publication date: 2022-06-14
Anticipated expiration: 2032-01-27

Abstract

The utility model relates to the technical field of fuel cells, and particularly discloses a fuel cell heat dissipation device, which comprises a heat dissipation shell positioned between two adjacent electrode blocks in a cell stack; the heat dissipation shell comprises an insertion part inserted between two electrode blocks and a heat dissipation part positioned on the outer side of the electrode blocks, wherein a plurality of heat pipes arranged from the insertion part to the heat dissipation part are arranged in the heat dissipation shell; the temperature difference between the hot end and the cold end of the heat pipe can be obviously improved under the cooling action of the cooling fan, so that the cooling efficiency is improved, and the internal overheating of the cell stack is avoided.

Description

Fuel cell heat dissipation device

Technical Field

The utility model relates to the technical field of fuel cell heat dissipation, in particular to a fuel cell heat dissipation device.

Background

Fuel cells are considered as one of ten technologies affecting the future world, and are devices that directly convert chemical energy of fuels (hydrogen, natural gas, liquefied gas, methanol, etc.) into electric energy. It has the characteristics of high efficiency, low pollution, no noise and the like, and is generally regarded by all countries in the world. Recently, fuel cell technology has been developed in a breakthrough, and is applied to automobiles, ships, and the like.

At present, the core element of the fuel cell is a proton exchange membrane, and the change of temperature has a great influence on the proton exchange membrane. Research shows that when the temperature of the fuel cell is between 70 and 80 ℃, the water distribution in the membrane can be improved, the transfer speed of protons in the membrane can be increased, and the membrane resistance can be reduced, so that the performance of the fuel cell can be improved. However, since the fuel cell continuously works, chemical reaction is continuously performed to output electric energy, and a large amount of heat is released, so that the temperature of the fuel cell quickly exceeds the temperature, the stability and proton conductivity of the cell are reduced, the output electric quantity of the fuel cell is unstable, the service life of the cell is seriously influenced, and even a great safety problem is caused.

SUMMERY OF THE UTILITY MODEL

In view of the defects in the prior art, an object of the present invention is to provide a heat dissipation device for a fuel cell, which can improve the heat dissipation efficiency of the fuel cell and promote the normal operation of a battery pack.

The technical scheme adopted by the utility model is as follows: a fuel cell heat sink includes a heat sink housing positioned between two adjacent electrode blocks in a stack; the heat dissipation shell comprises an insertion part inserted between the two electrode blocks and a heat dissipation part positioned on the outer side of the electrode blocks, a plurality of heat pipes arranged from the insertion part to the heat dissipation part are arranged in the heat dissipation shell, a plurality of heat dissipation fins arranged at intervals are arranged on one side of each heat pipe, corresponding to the heat dissipation part of the heat dissipation shell, and the heat dissipation fins penetrate through the outer side surface of the heat dissipation part; and a heat dissipation fan is arranged on the outer side of the heat dissipation part corresponding to the heat dissipation fins.

In the technical scheme; the insertion part of the radiating shell for radiating the heat of the fuel cell stack can be inserted between the adjacent electrode blocks, and the heat generated by the fuel cell during operation can be conducted to the radiating part through the insertion part to realize the heat radiation; the technical scheme adopts a heat pipe structure to absorb heat generated by the fuel cell; the heat pipe can realize heat conduction by utilizing the medium to be evaporated at the hot end and then condensed at the cold end, and the conducted heat can be dissipated through the radiating fins; the temperature difference between the hot end and the cold end can be obviously improved under the cooling action of the cooling fan, so that the cooling efficiency is improved.

The temperature inside the cell stack can be reduced through efficient heat dissipation, the problems of dehydration, shrinkage, wrinkles and even breakage of an internal membrane of the cell stack caused by overheating inside the cell stack are avoided, and the service life of the cell stack is prolonged.

Furthermore, the outer surface and the inner surface of the insertion part are provided with heat conduction layers, and the heat conduction layers positioned on the inner surface of the insertion part are wrapped on the outer surface of the heat pipe.

Furthermore, the heat dissipation shell is internally provided with fixing pieces which are arranged at intervals up and down, and the fixing pieces are provided with mounting openings through which the heat supply pipes penetrate.

Further, a heat insulating block is provided in the heat dissipating case between the corresponding insertion portion and the heat dissipating portion.

Furthermore, the radiating fins are provided with radiating holes, and the radiating holes are opposite to the wind direction of the radiating fan.

Furthermore, a fixing part is arranged on the outer side of the radiating part of the radiating shell, and a fixing plate connected with the fixing part is arranged between every two adjacent radiating shells.

Further, the cooling fan is arranged on a mounting table arranged on the fixing plate.

Furthermore, an atomizer is arranged on the cooling fan.

The utility model has the beneficial effects that: the insertion part of the heat dissipation shell for dissipating heat of the fuel cell stack can be inserted between the adjacent electrode blocks, the heat pipe structure positioned in the heat dissipation shell can absorb heat generated by the fuel cell and realize heat conduction by utilizing medium to condense at the cold end, and the conducted heat can be dissipated through the heat dissipation fins; the temperature difference between the hot end and the cold end can be obviously improved under the cooling action of the cooling fan, so that the cooling efficiency is improved. The problems of dehydration, shrinkage, wrinkling and even cracking of the internal membrane of the cell stack caused by internal overheating of the cell stack are avoided; has high practical value.

Drawings

In order to more clearly illustrate the detailed description of the utility model or the technical solutions in the prior art, the drawings that are needed in the detailed description of the utility model or the prior art will be briefly described below. Throughout the drawings, like elements or portions are generally identified by like reference numerals. In the drawings, elements or portions are not necessarily drawn to scale.

Fig. 1 is a structural diagram of a heat dissipation device for a fuel cell according to an embodiment of the present invention.

Reference numerals: electrode block 100, heat dissipation case 200, insertion portion 210, heat dissipation portion 220, heat pipe 300, heat dissipation fin 400, heat dissipation fan 500, heat conduction layer 600, fixing piece 700, heat insulation block 800, and fixing plate 900.

Detailed Description

Embodiments of the present invention will be described in detail below with reference to the accompanying drawings. The following examples are only for illustrating the technical solutions of the present invention more clearly, and therefore are only examples, and the protection scope of the present invention is not limited thereby.

It is to be noted that, unless otherwise specified, technical or scientific terms used herein shall have the ordinary meaning as understood by those skilled in the art to which the utility model pertains.

As shown in fig. 1, an embodiment of the present invention provides a heat dissipation device for a fuel cell, which can reduce the temperature inside a fuel cell stack, avoid overheating inside the fuel cell stack, and avoid the problems of dehydration, shrinkage, wrinkling, and even rupture of internal membranes of the fuel cell stack, thereby prolonging the service life of the fuel cell stack. The battery specifically comprises a heat dissipation shell 200 positioned between two adjacent electrode blocks 100 in a battery stack; the heat dissipation housing 200 comprises an insertion part 210 inserted between two electrode blocks 100 and a heat dissipation part 220 positioned outside the electrode blocks 100, a plurality of heat pipes 300 arranged from the insertion part 210 to the heat dissipation part 220 are arranged in the heat dissipation housing 200, a plurality of heat dissipation fins 400 arranged at intervals are arranged on one side of each heat pipe 300 corresponding to the heat dissipation part 220 of the heat dissipation housing 200, and the heat dissipation fins 400 penetrate through the outer side of the heat dissipation part 220; the heat dissipation portion 220 is further provided with a heat dissipation fan 500 corresponding to the outer side of the heat dissipation fins 400.

Through the above arrangement; the insertion part 210 of the heat dissipation shell 200 for dissipating heat of the fuel cell stack in the device can be inserted between the adjacent electrode blocks 100, and heat generated by the fuel cell during operation can be conducted to the heat dissipation part 220 through the insertion part 210 to dissipate heat; this embodiment adopts heat pipe 300 structure for carrying out heat-conduction, and the evaporation zone working fluid that is close to insertion portion 210 one side of heat pipe 300 is heated and is evaporated to take away the heat, this heat is working fluid's evaporation latent heat, and steam flows to the condensation segment of heat pipe 300 (heat dissipation part 220 of heat dissipation casing 200 promptly) from central passage, condenses into liquid, emits latent heat simultaneously, and under the effect of capillary force, liquid flows back to the evaporation zone. Thus, a closed cycle is completed, thereby transferring a large amount of heat from the heating section to the heat dissipation section; thereby efficiently absorbing heat generated by the fuel cell; the heat pipe 300 can realize heat conduction by condensing a medium at the cold end after the medium is evaporated at the hot end, and the conducted heat can be dissipated through the heat dissipation fins 400; in addition, this embodiment can show the difference in temperature that improves hot junction and cold junction under radiator fan 500's cooling effect to improve the radiating efficiency. As the prior art, the electrode block 100 includes an anode plate and a cathode plate, a membrane electrode is disposed between the anode plate and the cathode plate, and the structure of the electrode block 100 is common knowledge and will not be described herein.

As shown in fig. 1, in order to improve the heat transfer effect, in the present embodiment, heat conducting layers 600 are disposed on the outer surface and the inner surface of the insertion portion 210, and the heat conducting layer 600 on the inner surface of the insertion portion 210 is wrapped on the outer surface of the heat pipe 300. Thus, heat generated by the electrode plate can rapidly heat the structure of the heat pipe 300 through the heat conduction layer 600, and evaporative heat conduction is achieved.

As shown in fig. 1, in order to fix the heat pipe 300, the heat dissipating housing 200 of the present embodiment is provided with fixing pieces 700 spaced up and down, and the fixing pieces 700 are provided with mounting openings through which the heat pipe 300 passes. Fixing piece 700 can be used for positioning and supporting heat pipe 300, ensuring smooth heat dissipation. In addition, in the present embodiment, a heat insulating block 800 is provided in the heat dissipating case 200 between the insertion portion 210 and the heat dissipating portion 220. Insulation block 800 provides insulation so that heat is conducted entirely through heat pipe 300.

As described above, the heat dissipation fan 500 is disposed outside the heat dissipation housing 200, and in order to improve the heat dissipation effect, the heat dissipation fins 400 are disposed with heat dissipation holes opposite to the wind direction of the heat dissipation fan 500. Thus, the heat dissipation fan 500 generates an air flow capable of passing through the heat dissipation fins 400, so that heat is rapidly dissipated.

As shown in fig. 1, in this embodiment, a fixing portion is further provided outside the heat dissipating portion 220 of the heat dissipating housing 200, and a fixing plate 900 connected to the fixing portion is provided between two adjacent heat dissipating housings 200. The cooling fan 500 is disposed on a mounting table provided on the fixing plate 900. An atomizer is arranged on the cooling fan 500; like this, the fixed plate 900 on the one hand can be fixed the heat dissipation part 220, and on the other hand can install radiator fan 500, owing to have the atomizer structure on the radiator fan 500, can carry the atomizing air current to reduce the temperature of heat pipe 300 at heat dissipation part 220, promote the quick conduction of heat.

Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; while the utility model has been described in detail and with reference to the foregoing embodiments, it will be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; such modifications and substitutions do not depart from the spirit and scope of the present invention, and they should be construed as being included in the following claims and description.

Claims

1. A fuel cell heat sink, characterized by; comprises a heat dissipation shell (200) positioned between two adjacent electrode blocks (100) in the cell stack;

the heat dissipation shell (200) comprises an insertion part (210) inserted between two electrode blocks (100) and a heat dissipation part (220) positioned on the outer side of the electrode blocks (100), a plurality of heat pipes (300) arranged from the insertion part (210) to the heat dissipation part (220) are arranged in the heat dissipation shell (200), a plurality of heat dissipation fins (400) arranged at intervals are arranged on one side, corresponding to the heat dissipation part (220), of each heat pipe (300), and the heat dissipation fins (400) penetrate through the outer side face of the heat dissipation part (220); the heat dissipation part (220) is also provided with a heat dissipation fan (500) corresponding to the outer side of the heat dissipation fins (400).

2. The fuel cell heat sink of claim 1, wherein; the outer surface and the inner surface of the insertion part (210) are provided with heat conduction layers (600), and the heat conduction layers (600) on the inner surface of the insertion part (210) are wrapped on the outer surface of the heat pipe (300).

3. The fuel cell heat sink of claim 1, wherein; the heat dissipation device is characterized in that fixing pieces (700) which are arranged at intervals up and down are arranged in the heat dissipation shell (200), and mounting openings through which the heat supply pipes (300) penetrate are formed in the fixing pieces (700).

4. The fuel cell heat sink of claim 1, wherein; a heat insulation block (800) is arranged in the heat dissipation shell (200) between the corresponding insertion part (210) and the heat dissipation part (220).

5. The fuel cell heat sink of claim 1, wherein; the radiating fins (400) are provided with radiating holes, and the radiating holes are opposite to the wind direction of the radiating fan (500).

6. The fuel cell heat sink of claim 1, wherein; the outer side of the heat dissipation part (220) of the heat dissipation shell (200) is also provided with a fixing part, and a fixing plate (900) connected with the fixing part is arranged between every two adjacent heat dissipation shells (200).

7. The fuel cell heat sink of claim 6, wherein; the heat radiation fan (500) is arranged on a mounting table arranged on the fixing plate (900).

8. The fuel cell heat sink according to claim 7, wherein; and an atomizer is arranged on the heat dissipation fan (500).