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Fuel battery pile

A fuel cell stack and current technology, applied in fuel cells, fuel cell grouping, solid electrolyte fuel cells, etc., can solve the problems of easy corrosion of bolts and easy pollution of fuel, and achieve simple structure, wide adaptability and low price. Effect

Active Publication Date: 2008-10-29
BYD CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0017] The invention aims at the disadvantages of the prior art that the bolts in the fuel cell stack are easily corroded, the fuel is easily polluted, and there is a "dead zone" in the positive and negative flow fields, and provides a kind of bolts that will not be corroded, and the fuel will not be easily contaminated. Pollution, no "dead zone" in the cathode and anode flow field, and simple structure, compact fuel cell stack

Method used

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Embodiment Construction

[0026] The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments.

[0027] According to a specific embodiment of the present invention, such as image 3 As shown, the fuel cell stack provided by the present invention includes a first end plate 15, a second end plate 16, a first current diversion plate 17, a second current diversion plate 18, a bipolar plate 19, a membrane electrode 20, a sealing gasket 21, Bolt 22 and nut 23.

[0028] Wherein, the shapes of the first end plate 15, the second end plate 16, the first current diversion plate 17, the second current diversion plate 18, the bipolar plate 19 and the membrane electrode 20 can be various shapes, such as circular, Oval or polygonal, preferably circular, oval or square. The central holes 38 with a corresponding diameter greater than the diameter of the bolt 22 are respectively arranged on these plates, and the shape of the central hole 38 is adapted to ...

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PUM

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Abstract

The present invention relates to a fuel cell unit. It includes the following several portions: end plate, current induction plate, several double-electrode plates, several membrane electrodes, sealing washer, screw bolt and screw nut. Said invention also provides the concrete structure of the above-mentioned every portion and connection mode of all the above-mentioned portions.

Description

technical field [0001] The invention relates to the field of fuel cells, in particular to a fuel cell stack. Background technique [0002] A fuel cell is a device that directly converts chemical energy into electrical energy. It has the characteristics of high efficiency, less pollution and low noise. A fuel cell can be just a single fuel cell, or a fuel cell stack composed of multiple single fuel cells. [0003] A single fuel cell generally includes a proton exchange membrane 1, an anode 2, a cathode 3 and a guide plate 4, such as figure 1 shown. [0004] The proton exchange membrane 1 is a water-permeable and air-tight semi-permeable membrane, which has the function of proton conduction and can also prevent mixed explosion of oxidant and fuel. [0005] Anode 2 is a gas diffusion electrode, and its supporting material is generally composed of conductive carbon fiber or carbon cloth. Between the anode 2 and the proton exchange membrane 1 is a catalyst that catalyzes the ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01M8/24H01M8/10H01M8/247
CPCY02E60/521Y02E60/50
Inventor 董俊卿
Owner BYD CO LTD