CN214477581U

CN214477581U - Fuel cell module and vehicle

Info

Publication number: CN214477581U
Application number: CN202120352689.XU
Authority: CN
Inventors: 李骏; 李国全; 甘全全; 戴威
Original assignee: Shanghai Shenli Technology Co Ltd
Current assignee: Shanghai Shenli Technology Co Ltd
Priority date: 2021-02-04
Filing date: 2021-02-04
Publication date: 2021-10-22
Anticipated expiration: 2031-02-04

Abstract

The utility model relates to the technical field of fuel cells, in particular to a fuel cell module and a vehicle, wherein the module comprises a front end manifold, a rear end manifold and a fuel cell pack; the front end manifold and the rear end manifold are respectively arranged on the two ends of the fuel cell package along the diagonal line of the fuel cell package; the utility model has the advantages that the front end manifold and the rear end manifold are respectively arranged on the two ends of the fuel cell package along the diagonal line of the fuel cell package, so that the internal flow field distribution is more uniform; the leading-out of the pipeline can be designed according to the system requirements, so that the space utilization rate is improved; the leading-out of the pipeline can be designed according to the system requirements, the length of the pipeline is favorably shortened, the flow resistance of the pipeline is reduced, and the system efficiency is improved; the leading-out of the pipeline can be designed according to the system requirements, the design is simplified, the system cost is reduced, and the reliability of the system is improved.

Description

Fuel cell module and vehicle

Technical Field

The utility model relates to a fuel cell technical field, concretely relates to fuel cell module and vehicle.

Background

A fuel cell is a chemical device that directly converts chemical energy of fuel into electrical energy, and is also called an electrochemical generator. It is a fourth power generation technology following hydroelectric power generation, thermal power generation and atomic power generation. The fuel cell converts the Gibbs free energy in the chemical energy of the fuel into electric energy through electrochemical reaction, and is not limited by the Carnot cycle effect, so the efficiency is high; in addition, fuel cells use fuel and oxygen as raw materials; meanwhile, no mechanical transmission part is arranged, so that no noise pollution is caused, and the discharged harmful gas is less. It follows that fuel cells are the most promising power generation technology from the viewpoint of energy conservation and ecological environment conservation.

In the prior art, fuel cells such as CN201922405244.9 and CN201711387399.3, all manifolds are disposed on the side of the fixed end plate, the pipe is thicker and thicker with the continuous increase of power, and the pipe needs to be connected to the system components, and is disposed from one side, which causes great difficulty, influences the space utilization rate, and also causes difficulty in maintenance.

SUMMERY OF THE UTILITY MODEL

The utility model discloses the technical problem that will solve is: provided are a fuel cell module and a vehicle, in which the distribution of an internal flow field is more uniform, and the space utilization rate, efficiency, and reliability are improved.

In order to solve the technical problem, the utility model discloses a technical scheme be:

a fuel cell module comprising a front end manifold, a back end manifold, and a fuel cell package;

the front end manifold and the rear end manifold are respectively provided on both ends of the fuel cell packet along a diagonal line thereof.

In order to solve the technical problem, the utility model discloses an another technical scheme be:

a vehicle comprising the fuel cell module of claim.

The beneficial effects of the utility model reside in that: the front end manifold and the rear end manifold are respectively arranged on the two ends of the fuel cell package along the diagonal line of the fuel cell package, so that the distribution of the internal flow field is more uniform; the leading-out of the pipeline can be designed according to the system requirements, so that the space utilization rate is improved; the leading-out of the pipeline can be designed according to the system requirements, the length of the pipeline is favorably shortened, the flow resistance of the pipeline is reduced, and the system efficiency is improved; the leading-out of the pipeline can be designed according to the system requirements, the design is simplified, the system cost is reduced, and the reliability of the system is improved.

Drawings

FIG. 1 is a schematic diagram of a fuel cell module according to an embodiment of the present invention;

FIG. 2 is an internal structural view of FIG. 1;

FIG. 3 is a flow field diagram of the interior of FIG. 1;

description of reference numerals: 1. a front end manifold; 2. a back end manifold; 3. a fuel cell package; 4. fixing the end plate; 5. a floating end plate; 6. an elastic structure; 7. a sealing structure; 8. a rear end plate; 9. a gas inlet; 10. an outlet at the same side; 11. an opposite side outlet; 12. an internal flow passage.

Detailed Description

In order to explain the technical content, the objects and the effects of the present invention in detail, the following description is made with reference to the accompanying drawings in combination with the embodiments.

Referring to fig. 1 to 3, a fuel cell module includes a front manifold 1, a rear manifold 2, and a fuel cell stack 3;

the front end manifold 1 and the rear end manifold 2 are respectively provided on both ends of the fuel cell packet 3 along a diagonal line thereof.

As can be seen from the above description, the front manifold 1 and the rear manifold 2 are respectively disposed on the two ends of the fuel cell package 3 along the diagonal line thereof, so that the internal flow field distribution can be more uniform; the leading-out of the pipeline can be designed according to the system requirements, so that the space utilization rate is improved; the leading-out of the pipeline can be designed according to the system requirements, the length of the pipeline is favorably shortened, the flow resistance of the pipeline is reduced, and the system efficiency is improved; the leading-out of the pipeline can be designed according to the system requirements, the design is simplified, the system cost is reduced, and the reliability of the system is improved.

Further, the fuel cell package 3 comprises a fixed end plate 4, a floating end plate 5 and a rear end plate 8, wherein the floating end plate 5 is positioned between the fixed end plate 4 and the rear end plate 8; the front manifold 1 is mounted on a fixed end plate 4, and the rear manifold 2 is mounted on a floating end plate 5 through a rear end plate 8.

Furthermore, an elastic structure 6 is arranged between the floating end plate 5 and the rear end plate 8.

As is apparent from the above description, by providing the elastic structure 6, since the inside of the fuel cell is a carbon paper structure, there is a severe stress relaxation phenomenon with time, and thus it is ensured that the internal structure can be compressed for a long time.

Further, the elastic structure 6 is a spring.

Further, a sealing structure 7 is arranged between the rear end manifold 2 and the rear end plate 8.

As is apparent from the above description, the sealing requirements can be ensured by the arrangement of the sealing structure 7.

Further, the fuel cell package 3 includes a plurality of unipolar plates disposed in parallel, an internal flow channel 12 is formed between the unipolar plates, and the flow channel is communicated with the front end manifold 1 and the rear end manifold 2.

A vehicle includes the fuel cell module.

Example one

A fuel cell module includes a front end manifold 1, a rear end manifold 2, and a fuel cell package 3;

The fuel cell pack 3 comprises a fixed end plate 4, a floating end plate 5 and a rear end plate 8, wherein the floating end plate 5 is positioned between the fixed end plate 4 and the rear end plate 8; the front manifold 1 is mounted on a fixed end plate 4, and the rear manifold 2 is mounted on a floating end plate 5 through a rear end plate 8.

An elastic structure 6 is arranged between the floating end plate 5 and the rear end plate 8.

The elastic structure 6 is a spring.

And a sealing structure 7 is arranged between the rear end manifold 2 and the rear end plate 8.

The fuel cell package 3 includes a plurality of unipolar plates arranged in parallel, an internal flow channel 12 is formed between the unipolar plates, and the flow channel is communicated with the front end manifold 1 and the rear end manifold 2.

Referring to fig. 3, in the prior art, gas enters the fuel cell from the gas inlet 9 and flows out from the same side outlet 10, and the gas always flows from the high-pressure part to the low-pressure part, so the pressure distribution inside the fuel cell is a > b > d > c, therefore, the pressure difference between a and c is necessarily larger than that between b and c, and the pressure difference represents the flow rate because the internal flow channels 12 of all the unipolar plates are the same structure, and it can be seen that the larger the flow rate of the gas entering the inlet, the smaller the flow rate of the gas far away from the end plate, and the uneven gas distribution as a whole is.

Example a gas enters the inside of the fuel cell from the gas inlet 9 and flows out from the opposite side outlet 11, and since the gas always flows from the high pressure part to the low pressure part, the pressure distribution inside the fuel cell is a > b > d, a > c > d, whereby it can be seen that the pressure difference between a and c and between b and c are reduced, and there is a possibility of uniformity in design, which facilitates uniform distribution of the gas inside the stack.

Example two

A vehicle comprising the fuel cell module of embodiment one.

The above mentioned is only the embodiment of the present invention, and not the limitation of the patent scope of the present invention, all the equivalent transformations made by the contents of the specification and the drawings, or the direct or indirect application in the related technical field, are included in the patent protection scope of the present invention.

Claims

1. A fuel cell module comprising a front manifold, a back manifold, and a fuel cell packet;

the front end manifold and the rear end manifold are respectively arranged on the two ends of the fuel cell package along the diagonal line of the fuel cell package;

the fuel cell pack comprises a plurality of unipolar plates which are arranged in parallel, an internal flow channel is formed between the unipolar plates, and the flow channel is communicated with the front end manifold and the rear end manifold.

2. The fuel cell module of claim 1, wherein the fuel cell package includes a fixed end plate, a floating end plate, and a rear end plate, the floating end plate being positioned between the fixed end plate and the rear end plate; the front end manifold is installed on the fixed end plate, and the rear end manifold penetrates through the rear end plate and is installed on the floating end plate.

3. The fuel cell module of claim 2, wherein a resilient structure is disposed between the floating end plate and the back end plate.

4. A fuel cell module according to claim 3, wherein the resilient structure is a spring.

5. The fuel cell module of claim 2, wherein a seal structure is disposed between the back end manifold and the back end plate.

6. A vehicle characterized by comprising the fuel cell module according to any one of claims 1 to 5.