Split-flow reconstruction type fuel cell bipolar plate

A fuel cell and bipolar plate technology, applied to fuel cells, fuel cell components, circuits, etc., can solve the problems of low gas diffusion efficiency, small air flow, and poor drainage in the flow channel, and achieve the benefits of transmission Mass diffusion, stable and uniform gas flow

Pending Publication Date: 2021-08-06
上海氢晨新能源科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The traditional flow channel is generally a linear groove structure, and the gas diffusion efficiency in the flow channel is low; on the other hand, it can be seen from the above that there will be water accumulation in the flow channel on the cathode side. not effectively

Method used

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  • Split-flow reconstruction type fuel cell bipolar plate
  • Split-flow reconstruction type fuel cell bipolar plate
  • Split-flow reconstruction type fuel cell bipolar plate

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Embodiment Construction

[0022] The present invention will be described in detail below in conjunction with the accompanying drawings and specific embodiments. This embodiment is carried out on the premise of the technical solution of the present invention, and detailed implementation and specific operation process are given, but the protection scope of the present invention is not limited to the following embodiments.

[0023] This embodiment provides a split-flow reconfigurable fuel cell bipolar plate, which includes two stacked metal plates. The structure of the two metal plates is the same, the front is provided with the first flow channel area 1, and the back is provided with the second flow channel area, and the opposite sides of the two metal plates overlap so that the second flow channel area overlaps to form a coolant flow channel . Such as figure 1 As shown, the first flow channel area 1 of one metal pole plate is the anode flow channel area, and the first flow channel area 1 of the other...

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Abstract

The invention relates to a split-flow reconstruction type fuel cell bipolar plate. The split-flow reconstruction type fuel cell bipolar plate comprises two metal polar plates arranged in a laminated manner; one surface of each metal polar plate is provided with a first flow channel area, the other surface of each metal polar plate is provided with a second flow channel area; the two metal polar plates are relatively overlapped, so that the second flow channel areas are overlapped to form a cooling liquid flow channel; each first flow channel area comprises a plurality of rows of unidirectional flow channels which are arranged in parallel; each unidirectional flow channel comprises a main flow channel and a plurality of auxiliary flow channels, the main flow channel is of a wavy broken line structure, one end of each auxiliary flow channel is connected with a bending angle of the main flow channel, and the other end of each auxiliary flow channel is connected with the middle of a bending section of the bending angle in an airflow outlet direction. Compared with the prior art, the split-flow reconstruction type fuel cell bipolar plate has the advantages of improving the diffusion efficiency of gas, improving the drainage effect and the like.

Description

technical field [0001] The invention relates to the field of fuel cells, in particular to a split-flow reconfigurable fuel cell bipolar plate. Background technique [0002] Fuel cell is a kind of power generation device with the characteristics of environmental friendliness, high efficiency and long service life. Taking the proton exchange membrane fuel cell as an example, the fuel gas (hydrogen) enters the battery from the anode side of the battery, and the hydrogen atoms become protons after losing electrons at the anode, and the protons pass through the proton exchange membrane inside the battery to reach the battery cathode, while the electrons pass through The external loop also goes to the cathode side of the battery, where the protons, electrons, and oxygen combine to form water, which generates an electric current. [0003] Fuel gas or oxygen flows through the flow channel of the bipolar plate in the fuel cell, and the gap between the channel and the proton exchange...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M8/026H01M8/0265
CPCH01M8/026H01M8/0265Y02E60/50
Inventor 翟桂珍徐一凡
Owner 上海氢晨新能源科技有限公司
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