Metal pole plate of fuel battery, metal bipolar plate of fuel battery and fuel battery

Abstract

The invention provides a metal pole plate of a fuel battery, a metal bipolar plate of the fuel battery and the fuel battery. The metal pole plate comprises a first surface and a second surface, parallel first flow channels are formed by stamping on the first surface, parallel second flow channels are formed by stamping on the bottom of the first flow channel of the second surface, a cooling flow field channel is provided between two first flow channels on the second surface, the cooling flow field channel direction is consistent with the extension direction of the first flow channel, the second flow channel and the first flow channel are arranged in an intersectional mode, the second flow field is communicated with adjacent two cooling flow field channels, the depth of the second flow channel is less than that of the first flow channel, and the second flow channels at bottom of the adjacent two first flow channels are arranged in a stagger mode on the extension direction of the first flow channel. By employing the technical scheme of the present invention, the problems of battery local severe attenuation due to low power density and nonuniform temperature distribution of battery pile of the fuel battery in prior art can be solved.

Description

technical field [0001] The invention relates to the field of power generation equipment, in particular to a metal pole plate of a fuel cell, a metal bipolar plate of a fuel cell, and a fuel cell. Background technique [0002] Fuel cell is a kind of power generation device with the characteristics of environmental friendliness, high efficiency and long service life. Taking the proton exchange membrane fuel cell (PEMFC) as an example, the fuel gas (hydrogen) enters the battery from the anode side of the battery, and the hydrogen atoms become protons after the anode loses electrons, and the protons pass through the proton exchange membrane inside the battery to reach the battery cathode. At the same time, electrons also reach the cathode of the battery through the external circuit. On the cathode side of the battery, protons, electrons and oxygen combine to form water. [0003] Fuel cells convert chemical energy into electrical energy in a non-combustion manner. Since they are...

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Problems solved by technology

[0008] The main purpose of the present invention is to provide a metal pole plate of a fuel cell, a metal bipolar plate of a fuel cell, and a fuel cell, so as to solve the problem of low power density of the cell stack of the fuel cell in the prior art and problems caused by uneven temperature distribution of the cell stack. The problem of serious local attenuation of the battery

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