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Impacted metal double polar plate structure and preparation method thereof

A metal bipolar plate, bipolar plate technology, applied in the direction of structural parts, battery electrodes, final product manufacturing, etc., to achieve the effect of easy mass production, easy processing, and improved strength

Active Publication Date: 2006-06-14
SUNRISE POWER CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Stamping technology is quite mature, and the plate heat exchangers we commonly use basically adopt this technology, and many hardware devices are also processed by stamping, but there are no reports of using stamping technology to process fuel cell bipolar plates.

Method used

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  • Impacted metal double polar plate structure and preparation method thereof
  • Impacted metal double polar plate structure and preparation method thereof
  • Impacted metal double polar plate structure and preparation method thereof

Examples

Experimental program
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Embodiment 1

[0025] According to theoretical calculations, the stamping bipolar plate structure is designed. In order to reduce the processing difficulty of the stamping bipolar plate mold, the bipolar plate structure adopts positive and antisymmetric structure, and the bipolar plate plate adopts 304 stainless steel with a thickness of 0.3mm; the bipolar plate structure is as follows Figure 1-4 As shown, the bipolar plate has a fuel gas channel 1, an oxidant gas channel 2, a cooling medium channel 3, and a flow field structure with reasonable gas distribution; the bipolar plate flow field area 5 has a gas flow field groove 6 with a width of The upper width is 1.2mm, the lower width is 0.8mm, and the depth is 0.6mm. The reaction gas can be evenly distributed and flowed; in the flow field area 5 of the bipolar plate connected to the flow field groove 6 is the flow field boss 7 for collecting current; The flow field area 5 of the bipolar plate adopts positive and anti-symmetric, the groove on the...

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Abstract

The invention relates to a pressed metallic dipolar plate structure and the preparing method thereof, where both the right and reverse sides of the dipolar plate are symmetrically provided with fuel gas channels, oxidizing agent gas channels, cooling medium channels and dipolar plate flow field regions. The dipolar plate flow field regions are provided with gas flow field grooves and current-collecting flow field raised platforms, which are staggered, and both the right and reverse sides of the dipolar plate have sealing component holding sealing grooves between the fuel gas channels, oxidizing agent gas channels and cooling medium channels, and the edge of the dipolar plate is a convex-concave corresponding staggered structure so as to form a stress releasing region. The invention is simple to manufacture and easy to produce in large scale and largely reduces the expenses in manufacturing.

Description

Technical field [0001] The invention relates to the field of fuel cells, in particular to a stamped metal bipolar plate structure and a preparation method thereof. Background technique [0002] A fuel cell is a power generation device that directly converts the chemical energy in the fuel and oxidant into electrical energy through the electrocatalytic reaction on the electrode. The fuel cell is mainly composed of membrane electrode (MEA) and bipolar plate; MEA is the core of the fuel cell, and the bipolar plate is an important part of the battery. It plays a role in collecting current, gas distribution, water management, and thermal management in the fuel cell. Function: There are many types of bipolar plates. The commonly used bipolar plates are mechanically processed graphite bipolar plates. The technology is relatively mature, but the processing cost is expensive. It is mainly used in laboratory experimental research; current research on fuel cell bipolar plates Mainly concent...

Claims

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Application Information

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IPC IPC(8): H01M4/86H01M4/88H01M8/0258
CPCY02E60/50Y02P70/50
Inventor 燕希强徐洪峰侯明明平文衣宝廉
Owner SUNRISE POWER CO LTD
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