Fuel cell stack, fuel cell and vehicle

A fuel cell stack and core technology, applied in fuel cells, power system fuel cells, circuits, etc., can solve the problems of fuel cell stack performance, reduce volume power density, etc., to improve volume power density and occupy space Small, the effect of isolating electric transmission

Pending Publication Date: 2021-12-03
DONGFENG MOTOR GRP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

On the other hand, for the sake of insulation, the area of ​​the end plate is larger than the area of ​​the end face of the stack, so that there is a certain safety gap between the screw and the stack to achieve air insulation, but it also further reduces the volume power density of the entire stack.
[0005] To sum up, the screw fixing scheme in the prior art is not conducive to the improvement of the volumetric power density, and has a certain impact on the performance of the fuel cell stack

Method used

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  • Fuel cell stack, fuel cell and vehicle
  • Fuel cell stack, fuel cell and vehicle
  • Fuel cell stack, fuel cell and vehicle

Examples

Experimental program
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Effect test

Embodiment 1

[0031] Such as Figure 1-Figure 7 As shown, a fuel cell stack provided by the present invention includes at least four tie rods 1 and insulating rods 2 having the same number as the tie rods 1; wherein: at least four tie rods 1 are distributed on four sides of the fuel cell stack, The tie rod 1 includes the body of the tie rod 1 and the connection parts 12 located at both ends of the body of the tie rod 1. The tie rod 1 is respectively connected to the side of the intake end plate 3 and the side of the blind end sealing plate 4 of the fuel cell stack through the connection parts 12 to realize air intake. The fixed positioning of the end plate 3 and the blind end sealing plate 4 in the packaging direction means that in this embodiment, the tie rod 1 is on the other four sides where the inlet end plate 3 and the blind end sealing plate 4 are not provided. And the sides of the air inlet end plate 3 and the blind end sealing plate 4 are all provided with a sinking groove 5 for acc...

Embodiment 2

[0046] Based on the same inventive concept, the present invention also provides a fuel cell, including a casing and the fuel cell stack provided in Embodiment 1, and the fuel cell stack is arranged in the casing. The present invention does not specifically limit the type and type of the fuel cell, and can be any fuel cell in the prior art, such as a proton exchange membrane fuel cell, etc. Other unspecified structures of the fuel cell can refer to the prior art Relevant disclosures are not explained here.

Embodiment 3

[0048] Based on the same inventive concept, the present invention also provides a vehicle, including the fuel cell provided in Embodiment 2, that is, the fuel cell stack of the vehicle adopts the structure of the fuel cell stack provided in Embodiment 1, and the The insulating rod 2 is connected and fixed. The present invention does not specifically limit the type and type of the vehicle. It can be any vehicle in the prior art, such as a family car, passenger car, truck, etc. Other unspecified structures of the vehicle can refer to relevant disclosures in the prior art. , no expansion description will be made here.

[0049] Through the above embodiments, the present invention has the following beneficial effects or advantages:

[0050] 1) In the fuel cell stack provided by the present invention, the volume of the entire stack is reduced by using tie-rod fasteners, and counterbores are provided on the side of the end plate to ensure that the surface of the end plate is flush a...

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PUM

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Abstract

The invention discloses a fuel cell stack, a fuel cell and a vehicle. The fuel cell stack comprises at least four pull rods and insulating rods with the same number as the pull rods; the at least four pull rods are distributed on the four side surfaces of the fuel cell stack; each pull rod comprises a pull rod body and connecting parts located at the two ends of the pull rod body; the pull rods are connected with the side surface of a gas inflow end plate and the side surface of a blind end sealing plate of the fuel cell stack through the connecting parts; the side surfaces of the gas inflow end plate and the blind end sealing plate are respectively provided with sinking grooves for accommodating the connecting parts, and the connecting parts are connected with the sinking grooves; the insulating rods are arranged between the stack core of the fuel cell stack and the pull rod main bodies, and two ends of each insulating rod are respectively in contact with the gas inflow end insulating plate and blind end insulating plate of the fuel cell stack. According to the fuel cell stack, the area of the end plate does not need to be enlarged during insulation and fastening in the packaging direction of the fuel cell stack through side surface connection and the arrangement of the sinking grooves, the size of the fuel cell stack is effectively reduced, and the volume power density is favorably improved.

Description

technical field [0001] The invention relates to the technical field of fuel cells, in particular to a fuel cell stack, a fuel cell and a vehicle. Background technique [0002] Proton exchange membrane fuel cell (PEMFC) is a power generation device that directly converts the chemical energy of fuel into electrical energy. It has low operating temperature, fast start-up, high specific power, simple structure and convenient operation. Advantages, so fuel cells are widely used in the automotive industry, energy power generation, shipbuilding industry, aerospace, household power supply and other industries. [0003] Bipolar plates and membrane electrodes are important components of fuel cell stacks. Bipolar plates are used to distribute fuel, conduct electricity and support membrane electrodes. Membrane electrodes are places where electrochemical reactions occur. After bipolar plates and membrane electrodes are stacked and connected in series Composition of fuel cell stacks. A ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M8/247H01M8/0273
CPCH01M8/247H01M8/0273H01M2250/20Y02E60/50
Inventor 张迪蒋文彬
Owner DONGFENG MOTOR GRP
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