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Bipolar plate, fuel cell stack and power generation system comprising bipolar plate

A fuel cell stack and bipolar plate technology, which is applied in the direction of fuel cells, power system fuel cells, fuel cell components, etc., can solve problems such as unsatisfactory and poor drainage of bipolar plates, and achieve favorable pressure drop, Effect of reducing internal resistance and reducing parasitic power

Pending Publication Date: 2019-11-22
张国胜 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, because the fluidity of air is worse than that of hydrogen, the drainage of the bipolar plate is not ideal.

Method used

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  • Bipolar plate, fuel cell stack and power generation system comprising bipolar plate
  • Bipolar plate, fuel cell stack and power generation system comprising bipolar plate
  • Bipolar plate, fuel cell stack and power generation system comprising bipolar plate

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Embodiment 1

[0077] like Figure 1A-Figure 3 As shown, the present invention provides a bipolar plate, which is Embodiment 1 of the present invention, comprising a first pole plate 1 and a second pole plate 2, and the first pole plate 1 has a first surface 11 and a second surface 12 , the second pole plate 2 has a third surface 21 and a fourth surface 22, the second surface 12 of the first pole plate 1 and the fourth surface 22 of the second pole plate 2 are bonded together, forming a Coolant channel 3. The first surface 11 of the first pole plate 1 has a first flow channel 111 and a first reference surface 112 , and the second surface 12 has a second flow channel 121 and a second reference surface 122 . The third surface 21 of the second pole plate 2 has a third channel 211 and a third reference surface 212 , and the fourth surface 22 has a fourth channel 221 and a fourth reference surface 222 . The first channel 111 is a groove formed in the thickness direction relative to the first re...

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Abstract

Provided are a bipolar plate and a fuel cell stack and a power generation system comprising the bipolar plate, the bipolar plate comprises a first polar plate and a second polar plate, the first polarplate is provided with a first surface and a second surface, the second polar plate is provided with a third surface and a fourth surface, and the first surface of the first polar plate is provided with a first flow channel and a first reference surface; a third flow channel and a third reference surface are arranged on the third surface of the second polar plate; in the bipolar plate, the secondsurface of the first polar plate and the fourth surface of the second polar plate are attached together; the first surface of the first polar plate and the third surface of the second polar plate have different flow fields. And at least two synchronous fluctuating areas are arranged on the bipolar plate and are channels for leading a coolant into and out of the bipolar plate interlayer. And a coolant diversion dike is arranged on the second polar plate and can guide the coolant to flow according to a set route. Due to the characteristics, the bipolar plate has the advantages of good drainageproperty, good cooling effect and the like.

Description

technical field [0001] The invention belongs to the technical field of fuel cells, in particular to a bipolar plate used in a fuel cell stack, a fuel cell stack and a power generation system including the bipolar plate. Background technique [0002] A fuel cell is an electrochemical reaction device that can convert chemical energy into electrical energy. It has the advantages of high energy conversion efficiency, zero emission, and no mechanical noise. It is favored in military and civilian fields. Proton exchange membrane fuel cell (PEMFC) uses solid polymer membrane as electrolyte, has the advantages of simple structure and low working temperature, and has unique advantages as a mobile power source. Internationally renowned automobile companies such as Japan's Toyota Motor Corporation and South Korea's Hyundai Motor Corporation have developed mass-produced fuel cell electric vehicles (FCEV or FCV) powered by PEMFC. [0003] Each PEMFC cell consists of two plates (an anode...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M8/0258H01M8/0263H01M8/0267
CPCH01M8/0258H01M8/0263H01M8/0267Y02E60/50H01M8/026H01M2250/20
Inventor 张国胜张知劲
Owner 张国胜
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