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Monopolar plate, bipolar plate and fuel cell

A unipolar plate and gas flow channel technology, applied in fuel cells, fuel cell components, circuits, etc., can solve the problems of insufficient gas reaction time, insufficient contact time and reaction area, and poor gas mass transfer.

Pending Publication Date: 2020-12-18
GREE ELECTRIC APPLIANCES INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The currently known bipolar plates, the cathode and anode flow fields are all designed with straight channels, the path is short, the contact time and reaction area are insufficient, resulting in insufficient gas reaction time and poor gas mass transfer.

Method used

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  • Monopolar plate, bipolar plate and fuel cell
  • Monopolar plate, bipolar plate and fuel cell
  • Monopolar plate, bipolar plate and fuel cell

Examples

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Embodiment Construction

[0036] see in conjunction Figure 1 to Figure 7 As shown, according to the embodiment of the present application, the unipolar plate includes a gas inlet and a gas outlet, the gas inlet is arranged at the first end of the short side of the unipolar plate, and the gas outlet is arranged at the second end of the short side of the unipolar plate, The unipolar plate also includes a gas channel 1, the gas channel 1 extends along the short side of the unipolar plate, one end of the gas channel 1 communicates with the gas inlet, the other end of the gas channel 1 communicates with the gas outlet, and the gas channel 1 1 is S-shaped or zigzag.

[0037] In this application, by making the gas channel form an S-shaped or zigzag structure, the S-shaped or zigzag structure can be used to form a flow diversion and reduce the flow channel of the working medium reaction area of ​​the gas channel 1 extending along the short side direction of the unipolar plate. Flow resistance, increase the d...

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Abstract

The invention provides a monopolar plate, a bipolar plate and a fuel cell. The monopolar plate comprises a gas inlet and a gas outlet, the gas inlet is formed in the first end of the short edge of themonopolar plate, the gas outlet is formed in the second end of the short edge of the monopolar plate, the monopolar plate further comprises a gas flow channel (1), the gas flow channel (1) extends inthe direction of the short edge of the monopolar plate, one end of the gas flow channel (1) is communicated with the gas inlet, the other end of the gas flow channel (1) is communicated with the gasoutlet, and the gas flow channel (1) is in an S shape or a sawtooth shape. According to the monopolar plate, the bipolar plate and the fuel cell, the reaction time of gas can be prolonged, and the gasmass transfer capacity is enhanced.

Description

technical field [0001] The present application relates to the technical field of fuel cells, in particular to a unipolar plate, a bipolar plate and a fuel cell. Background technique [0002] A fuel cell is a device that directly converts the chemical energy of fuel into electrical energy. It has the advantages of high energy conversion rate, environmental friendliness, and low operating temperature. It is a clean energy technology with great development prospects. Metal bipolar plates are the core components of proton exchange membrane fuel cells. Compared with graphite and composite bipolar plates, metal bipolar plates have obvious advantages, such as good thermal and electrical conductivity, good gas barrier properties, and high mechanical strength. Technical trends and research hotspots in high power density fuel cell design. [0003] Bipolar plates have many important functions such as collecting and conducting current, supporting membrane electrodes, uniformly transpor...

Claims

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Application Information

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IPC IPC(8): H01M8/0202H01M8/0258H01M8/026H01M8/0263
CPCH01M8/0202H01M8/0258H01M8/026H01M8/0263Y02E60/50
Inventor 王思偲王阳薛晓婷刘智亮宋平
Owner GREE ELECTRIC APPLIANCES INC
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