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A fuel cell deflector

A technology of deflectors and diversion grooves, which is applied in the direction of fuel cells, circuits, electrical components, etc., can solve problems such as battery performance, operating efficiency, and manufacturing cost impact, and achieve uniformity of temperature, increase consistency, and reduce temperature poor effect

Active Publication Date: 2021-08-31
中能源工程集团氢能科技有限公司 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The channel design of the flow field plate has a great influence on the battery performance, operating efficiency and manufacturing cost

Method used

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  • A fuel cell deflector
  • A fuel cell deflector
  • A fuel cell deflector

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Embodiment Construction

[0025] The present invention will be described in further detail below in conjunction with the accompanying drawings and embodiments.

[0026] 1. If Figure 1~4 As shown, it is a fuel cell deflector that is beneficial to improve the consistency of fluid flow rate and temperature distribution. The slot plate 1 and the hydrogen guiding slot plate 11 are composed; the cooling fluid channel 9 is in the interlayer formed by the reverse side of the air guiding slot plate 1 and the reverse side of the hydrogen guiding slot plate 11; The air common channel 2 for air in and out, the hydrogen public channel 3 for hydrogen in and out, the cooling fluid channel 4 for cooling fluid in and out, and the air guide groove 15 for connecting the fluid channel in and out and the fluid channel for connecting in and out The hydrogen diversion groove 16; it is characterized in that, described diversion bipolar plate is generally rectangular, protrudes two protrusions 17 along one side of this cuboi...

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Abstract

The invention discloses a fuel cell deflector with more uniform flow velocity distribution and temperature distribution of cooling fluid. The deflector is a rectangular parallelepiped diversion bipolar plate, which is composed of an air diversion groove plate and a hydrogen diversion groove plate bonded together; holes for air in and out, hydrogen in and out, cooling fluid in and out, and holes for connecting the fluid in and out The diversion groove is arranged on the diversion bipolar plate; the cooling fluid channel is in the interlayer formed on the back of the air diversion groove plate and the back of the hydrogen gas diversion groove plate; along the side of the long side of the diversion plate The inlet and outlet of the cooling liquid are arranged; along the side of the short side of the deflector, there are holes for air and hydrogen to enter and exit. The fuel cell deflector of the invention is beneficial to improve the uniformity of the flow velocity distribution of the cooling liquid, to reduce the temperature difference between the inlet and outlet of the cooling fluid, and to improve the uniformity of the temperature distribution of the polar plate.

Description

technical field [0001] The invention belongs to the technical field of fuel cells, and in particular relates to a fuel cell deflector which is beneficial to improving the consistency of fluid flow velocity and temperature distribution. Background technique [0002] Proton exchange membrane fuel cell (PEMFC) is considered to be an ideal power source suitable for human development and environmental requirements due to its high efficiency, low specific energy and low pollution. The bipolar plate (flow field plate) is an important part of the proton exchange membrane fuel cell, and its mass accounts for more than 60% of the cell stack. The channel design of the flow field plate has a great influence on the battery performance, operating efficiency and manufacturing cost. There are flow channels processed on both sides of the bipolar plate, which play an important role in distributing reaction gas, collecting current, mechanical support, water and heat management, and separating...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01M8/0258H01M8/0267
CPCH01M8/0258H01M8/0267Y02E60/50
Inventor 刘畅张泽坪王诚穆怀萍张向东
Owner 中能源工程集团氢能科技有限公司
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