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Short-range straight-line bipolar plate for fuel cell

A fuel cell and in-line technology, applied to fuel cells, fuel cell components, circuits, etc., can solve the problems of low effective area ratio of the core power generation part and relying on pipelines for realization

Inactive Publication Date: 2020-08-28
清华大学山西清洁能源研究院
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This makes the effective area ratio of the core power generation part low, and the connection between the assembled battery stack and other components in the fuel cell system can only be realized by pipelines

Method used

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  • Short-range straight-line bipolar plate for fuel cell
  • Short-range straight-line bipolar plate for fuel cell
  • Short-range straight-line bipolar plate for fuel cell

Examples

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Comparison scheme
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Embodiment 1

[0027] The invention relates to a short-distance in-line bipolar plate for a fuel cell. The bipolar plate is composed of an anode-side unipolar plate and a cathode-side unipolar plate bonded together on the back side. Both the anode-side unipolar plate and the cathode-side unipolar plate include a rectangular substrate, and the material of the substrate can be a conductive plate such as a graphite plate, a composite graphite plate, or a metal plate. In this embodiment, a graphite plate with a thickness of 1.5 mm is used as the substrate, and the outer dimension of the substrate is 193×83.8 mm.

[0028] The front side of the cathode side unipolar plate or the anode side unipolar plate as figure 1 As shown, the center of the substrate is provided with a gas flow field area 3, and the upper part of the gas flow field area 3 is provided with a front air inlet 1, a cooling liquid inlet 2 and an anode / cathode gas inlet 4 (the cathode side single The polar plate corresponds to the a...

Embodiment 2

[0032] In this embodiment, the design of the front flow field of the cathode-side unipolar plate and the anode-side unipolar plate is the same as that of Embodiment 1. The difference is the position of the cathode gas outlet 6 on the back of the cathode-side unipolar plate, the anode gas outlet 13 and the coolant outlet 14 on the back of the anode-side unipolar plate, such as Figure 4 As shown, the cathode gas outlet 6 is located at the lower part of the back side edge of the cathode-side unipolar plate, the bottom of the cathode gas outlet 6 is 10.8mm away from the bottom of the substrate, and the size it occupies is 8.4×4.6mm, the width of the outlet flow channel is 0.8mm, and the ridge The width is 0.6mm, and the groove depth is 0.6mm. Such as Figure 5 As shown, the anode gas outlet 13 is located at the lower part of the back side edge of the anode side unipolar plate, the bottom of the anode gas outlet 13 is 10.8mm away from the bottom of the substrate, and the size it ...

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Abstract

The invention relates to a short-range straight-line bipolar plate for a fuel cell. According to the design scheme of the short-range straight-line bipolar plate, the design of a cathode and anode gasand cooling liquid outlet outer frame of a traditional bipolar plate is reduced, the straight-line outlet design is adopted, the length of a gas flow field is shortened, and the effective area ratioof the bipolar plate is increased. By means of the design, compared with a traditional bipolar plate design, the bipolar plate design scheme for the fuel cell has the advantages of being short in gasflow, efficient in drainage, high in effective area rate, flexible in outlet design and the like.

Description

technical field [0001] The invention relates to the technical field of bipolar plate design for a proton exchange membrane fuel cell, in particular to a short-range in-line bipolar plate for a fuel cell. Background technique [0002] Hydrogen energy is considered to be an alternative energy source for traditional fossil energy in the future. As one of the utilization methods of hydrogen energy, proton exchange membrane fuel cells are applied in mobile power or power stations, fixed power stations, electric vehicle drive power, etc. Among them, electric vehicles driven by hydrogen fuel cells are considered to be an ideal alternative new energy vehicle for traditional gasoline vehicles, with the advantages of fast fuel replenishment, high mileage, and reliable reliability. Both at home and abroad are speeding up the construction and manufacturing of hydrogen refueling stations and fuel cell vehicles with the support of the government. [0003] The bipolar plate is one of the ...

Claims

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Application Information

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IPC IPC(8): H01M8/026H01M8/0267H01M8/0276
CPCH01M8/026H01M8/0267H01M8/0276Y02E60/50
Inventor 王树博谢晓峰
Owner 清华大学山西清洁能源研究院
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