Metal bipolar plate with Z-shaped flow field area distribution
A metal bipolar plate and regional distribution technology, applied in the field of hydrogen energy, can solve the problems of increasing fluid flow loss, high design requirements, and difficulty in processing and production.
Active Publication Date: 2021-09-10
DONGFENG MOTOR GRP
View PDF7 Cites 2 Cited by
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
In this technology, the combination of dot matrix groove raised flow field, serpentine flow field and parallel flow field is used to form the main flow field in the active area. Structural matching of two unipolar plates also requires higher design requirements.
In addition, the complex flow field design of the invention will greatly increase the loss of fluid flow
[0006] The cooling medium inlet and outlet of the above-mentioned bipolar plate are set on the same side as the hydrogen gas inlet or air inlet and outlet. Due to the need to take into account both, the structure of the cooling medium inlet section is complicated and the loss of fluid flow is increased.
Method used
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View moreImage
Smart Image Click on the blue labels to locate them in the text.
Smart ImageViewing Examples
Examples
Experimental program
Comparison scheme
Effect test
Embodiment Construction
[0056] The following specific implementation methods are used to explain the technical solutions of the claims of the present invention, so that those skilled in the art can understand the claims. The protection scope of the present invention is not limited to the following specific implementation structures. Those skilled in the art include the technical solutions of the claims of the present invention and are different from the following specific embodiments, which are also the protection scope of the present invention. In the following examples, "upper", "lower", "left", "right" ” and so on are only used to indicate the relative positional relationship in the illustration. When the absolute position of the described object changes, the relative positional relationship may also change accordingly. In the figure, the left and right are the ends, and the top and bottom are the sides.
[0057] The metal bipolar plates distributed in the "Z" type flow field area of the presen...
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More PUM
Login to View More Abstract
The invention discloses a metal bipolar plate with Z-shaped flow field area distribution. The bipolar plate comprises a polar plate body, wherein the front surface of the polar plate body is configured to be a gas flow field; the back surface of the polar plate body is configured to be a cooling medium flow field; a cooling medium inlet and a cooling medium outlet are respectively arranged at two ends of the polar plate body, and a gas channel is arranged on the polar plate body between the cooling medium inlet and the cooling medium outlet. The gas flow field comprises a right triangle of the first area as an inlet area; and the right triangle of the third area is an exit area, and the parallelogram is an active area. According to the technical scheme, through arrangement of air, hydrogen and cooling liquid inlet and outlet positions, the distribution uniformity of fluid entering each flow channel of the active region can be greatly improved, so that the performance of the battery is improved. According to the scheme, the S-shaped flow channel is arranged, so that the drainage effect of the flow channel can be enhanced.
Description
technical field [0001] The invention belongs to hydrogen energy technology, and in particular relates to a hydrogen energy battery structure, in particular to a current collecting plate in the hydrogen energy battery structure, that is, bipolar plate technology. Background technique [0002] The bipolar plate, also known as the collector plate, is one of the important components that affect the performance of the proton exchange membrane fuel cell. Its main function is to form a fluid channel, isolate the flow field of hydrogen and air, and form a circuit between the cathode and anode. Bipolar plates are usually made of graphite, composite materials or metal materials. Among them, metal bipolar plates are easy to process, have strong electrical conductivity, good mechanical quality, low cost, high strength, thin thickness, and small volume. It has the advantages of high volume specific power and specific energy. [0003] The flow field structure on the bipolar plate determi...
Claims
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More Application Information
Patent Timeline
Login to View More Patent Type & Authority Applications(China)
IPC IPC(8): H01M8/026H01M8/0263H01M8/0265
CPCH01M8/0263H01M8/0265H01M8/026Y02E60/50
Inventor 邓哲
Owner DONGFENG MOTOR GRP