Bipolar plate and preparation process thereof, single cell and proton exchange membrane fuel cell

A technology of proton exchange membrane and preparation process, which is applied in the field of fuel cells, can solve problems such as drainage restrictions, achieve the effects of preventing electrode flooding, facilitating industrial development, and improving power density

Pending Publication Date: 2019-01-18
苏州朔景动力新能源有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The Ballard 9SSL stack with a slender flow field structure can only reach 15kW, and then various types of stack systems are composed of 15kW stacks, which can well solve the drainage problem at low current density, but high power density Drainage is still restricted under high power density, and the large-area rectangular flow field structure is also facing similar problems

Method used

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  • Bipolar plate and preparation process thereof, single cell and proton exchange membrane fuel cell
  • Bipolar plate and preparation process thereof, single cell and proton exchange membrane fuel cell
  • Bipolar plate and preparation process thereof, single cell and proton exchange membrane fuel cell

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Embodiment 1

[0087] see figure 1 , figure 2 and image 3 , the embodiment of the present invention provides a bipolar plate and a manufacturing process thereof.

[0088] The bipolar plate includes a cathode plate 100 , an anode plate 200 and a cooling plate 300 .

[0089] The cathode plate 100, the anode plate 200 and the cooling plate 300 are all rectangular thin plates of titanium alloy with a thickness of 100 microns.

[0090] The cathode plate 100 is respectively provided with two oxidant inlets 110 and two oxidant outlets 120 , and the two oxidant inlets 110 and two oxidant outlets 120 are communicated with each other by an oxidant flow channel 130 . The cathode plate 100 includes two cathode structural units.

[0091] The anode plate 200 is respectively provided with two fuel gas inlets 210 and two fuel gas outlets 220 , and the two fuel gas inlets 210 and the two fuel gas outlets 220 are communicated by a fuel gas channel 230 correspondingly. The anode plate 200 includes two a...

Embodiment 2

[0097] see Figure 4 , see figure 1 and figure 2 , the embodiment of the present invention provides a bipolar plate and a manufacturing process thereof.

[0098] The bipolar plate includes a cathode plate 100 , an anode plate 200 and a cooling plate 300 .

[0099] The cathode plate 100, the anode plate 200 and the cooling plate 300 are all rectangular thin plates of titanium alloy with a thickness of 100 microns.

[0100] The cathode plate 100 is respectively provided with three oxidant inlets 110 and three oxidant outlets 120 , and the three oxidant inlets 110 and three oxidant outlets 120 are communicated with each other by the oxidant flow channels 130 . The cathode plate 100 includes three cathode structural units.

[0101] The anode plate 200 is respectively provided with three fuel gas inlets 210 and three fuel gas outlets 220 , and the three fuel gas inlets 210 and three fuel gas outlets 220 are communicated with each other by a fuel gas flow channel 230 . The ano...

Embodiment 3

[0107] see Figure 5 , the embodiment of the present invention provides a bipolar plate and a manufacturing process thereof.

[0108] The bipolar plate includes a cathode plate 100 , an anode plate 200 and a cooling plate 300 .

[0109] The cathode plate 100, the anode plate 200 and the cooling plate 300 are all rectangular thin plates of titanium alloy with a thickness of 100 microns.

[0110] The cathode plate 100 is respectively provided with four oxidant inlets 110 and four oxidant outlets 120 , and the four oxidant inlets 110 and four oxidant outlets 120 are communicated with each other by oxidant flow channels 130 . The cathode plate 100 includes four cathode structural units.

[0111] The anode plate 200 is respectively provided with four fuel gas inlets 210 and four fuel gas outlets 220 , and the four fuel gas inlets 210 and the four fuel gas outlets 220 are communicated one by one by the fuel gas flow channels 230 . The anode plate 200 includes four anode structura...

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PUM

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Abstract

The invention relates to a bipolar plate and a preparation process thereof, a single cell and proton exchange membrane fuel cell, and belongs to the technical field of fuel cells. A bipolar plate includes a cathode plate and an anode plate, The cathode plate is provided with two or more oxidizer inlets and two or more oxidizer outlets, the oxidizer inlets and the oxidizer outlets are one-to-one correspondingly communicated by an oxidizer flow passage, the anode plate is provided with a fuel gas inlet and a fuel gas outlet, and the fuel gas inlet and the fuel gas outlet are one-to-one correspondingly communicated by a fuel gas flow passage. The bipolar plate can effectively increase the surface current density of the fuel cell, thereby increasing the power density of the fuel cell, and caneffectively prevent the electrode from flooding under the high current rate density. A process for preparing a bipolar plate includes laser engraving or etching. In addition, the invention also relates to a single cell and a proton exchange membrane fuel cell.

Description

technical field [0001] The invention relates to the technical field of fuel cells, in particular to a bipolar plate and a preparation process thereof, a single cell and a proton exchange membrane fuel cell. Background technique [0002] A fuel cell is a device that generates electricity through electrochemical oxidation of hydrogen and oxygen, and has a broad market prospect. Fuel cells are specifically divided into proton exchange membrane fuel cells, high temperature solid oxide fuel cells, alkaline fuel cells, phosphoric acid fuel cells and molten carbonate fuel cells. [0003] Proton exchange membrane fuel cells have many advantages: the product is water, stable operation, fast start-up, low operating temperature, high volume power density, etc., and are being practically used as vehicle power supplies, backup power supplies, and household cogeneration of heat and power. Research. [0004] Proton exchange membrane fuel cells are usually stacked alternately by membrane ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M8/0258H01M8/10
CPCH01M8/0258H01M8/10Y02E60/50
Inventor 方谋刘恒伟刘海龙王新舒孟祥金刘双喜陈小惠陈章耀孙泽恩袁佳林韩德刘恒燕张伟方达杰曹成方佳倩施彦铭孙雅梅包利斌
Owner 苏州朔景动力新能源有限公司
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