Bipolar plate flow guide region structure, bipolar plate and fuel cell
A diversion zone and bipolar plate technology, applied in fuel cells, circuits, electrical components, etc., can solve the problems of damaged membrane electrodes, large gas pressure loss, etc., and achieve the effects of reducing pressure loss, increasing area, and improving durability
Pending Publication Date: 2022-01-28
北京新研创能科技有限公司
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[0005] The purpose of this application is to provide a bipolar plate diversion area structure, bipolar plate and fuel cell to solve the problems of large gas pressure loss and damage to membrane electrodes in the existing bipolar plate diversion area structure
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[0041] The technical solutions of the present application will be clearly and completely described below in conjunction with the embodiments. Apparently, the described embodiments are part of the embodiments of the present application, not all of them. Based on the embodiments in this application, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the scope of protection of this application.
[0042] Those skilled in the art can understand that, unless otherwise defined, all terms (including technical terms and scientific terms) used herein have the same meanings as commonly understood by those of ordinary skill in the art to which this application belongs. It should also be understood that terms, such as those defined in commonly used dictionaries, should be understood to have meanings consistent with their meaning in the context of the prior art, and unless specifically defined as herein, are not intended to be ide...
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The invention belongs to the technical field of fuel cells, and provides a bipolar plate flow guide region structure, a bipolar plate and a fuel cell. The bipolar plate flow guide region structure comprises a first polar plate and a second polar plate which are stacked, and a plurality of flow guide structures are constructed between the first polar plate and the second polar plate; each flow guide structure comprises a fluid inlet and outlet cavity, a first flow guide cavity, a second flow guide cavity and a distribution area inlet and outlet cavity which are sequentially communicated with one another, wherein the fluid inlet and outlet cavity is provided with a first opening for fluid to enter and exit from, and the distribution area inlet and outlet cavity is provided with a second opening for fluid to enter and exit from. According to the bipolar plate flow guide region structure provided by the invention, the plurality of flow guide structures are arranged, and the opening directions of the two ends of each flow guide structure are consistent with the flowing direction of the fluid in the flow guide structure, so that the pressure loss of the fluid in the flow guide structures is reduced on the premise of ensuring uniform distribution of the fluid, and the mechanical impact of the fluid on a membrane electrode is avoided, the service life of a cell stack is prolonged, and the comprehensive performance of the cell stack is improved.
Description
technical field [0001] The present application relates to the technical field of fuel cells, in particular to a bipolar plate diversion area structure, a bipolar plate and a fuel cell. Background technique [0002] A fuel cell is a power generation device that uses hydrogen as a fuel, oxygen or air as an oxidant, and converts chemical energy directly into electrical energy through an electrochemical reaction. Its energy conversion rate is high, because its reaction product is water, which can be directly discharged or recycled, and is environmentally friendly, so it is considered to be one of the most potential power generation devices at present. [0003] As one of the core components of the fuel cell stack (referred to as "stack"), the bipolar plate not only provides flow channels for the reaction gas and coolant, so that the fluid is evenly distributed, but also isolates each single cell and supports the stack. effect. The design of the flow field structure of the plate...
Claims
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IPC IPC(8): H01M8/0258
CPCH01M8/0258Y02E60/50
Inventor 马春宏齐志刚
Owner 北京新研创能科技有限公司