CN216928635U

CN216928635U - Hydrogen fuel cell bipolar plate with wave-shaped flow passage structure

Info

Publication number: CN216928635U
Application number: CN202123406187.XU
Authority: CN
Inventors: 高林玉; 易斌; 胡家磊; 王景晓; 李元宏
Original assignee: Weifang Belead Automobile Parts Co ltd
Current assignee: Weifang Belead Automobile Parts Co ltd
Priority date: 2021-12-31
Filing date: 2021-12-31
Publication date: 2022-07-08
Anticipated expiration: 2031-12-31

Abstract

The utility model relates to the technical field of fuel cell bipolar plates, and provides a hydrogen fuel cell bipolar plate with a wavy flow passage structure, which comprises a plate body; a plurality of medium channels which are arranged in parallel are arranged on the plate body, each medium channel comprises two vertical sections, and a horizontal section is connected between the two vertical sections; the two vertical sections are respectively connected with a medium port; the vertical section and the horizontal section of the medium channel are both wave-shaped structures. Therefore, the utility model enables the medium to enter from one medium through opening by arranging the zigzag medium channel, and to flow out from the other medium through opening after passing through the vertical section and the horizontal section of the medium channel. The flow path and time of the medium are increased, and the reaction time is greatly prolonged.

Description

Hydrogen fuel cell bipolar plate with wave-shaped flow passage structure

Technical Field

The utility model belongs to the technical field of fuel cell bipolar plates, and particularly relates to a hydrogen fuel cell bipolar plate with a wavy flow channel structure.

Background

The proton exchange membrane fuel cell is a power generation device which takes hydrogen as fuel and air as oxidant and converts chemical energy into electric energy. During the reaction process, the bipolar plate plays roles of separating reaction gas, conducting current, guiding gas and the like. This requires that the bipolar plate have high electrical conductivity, good gas barrier properties, good corrosion resistance, etc. The bipolar plate is used as an important component of the PEMFC, wherein the aspects of material selection and preparation, bipolar plate flow field structure design, bipolar plate processing method and the like are the core contents of bipolar plate manufacturing and innovation.

The bipolar plate flow field structure has important influence on uniform distribution of reaction gas and timely drainage. When the gas distribution is not uniform, the local overheating phenomenon can occur in the membrane electrode, and the risk of burning through of the proton exchange membrane is increased; when the generated water cannot be discharged in time, the flow of the gas is obstructed, and the progress of the electrochemical reaction is greatly influenced.

In view of the above, the prior art is obviously inconvenient and disadvantageous in practical use, and needs to be improved.

SUMMERY OF THE UTILITY MODEL

In view of the above-mentioned drawbacks, an object of the present invention is to provide a hydrogen fuel cell bipolar plate with a wavy flow channel structure, in which a loop-shaped medium channel is provided, so that a medium enters from one medium port, passes through a vertical section and a horizontal section of the medium channel, and then flows out from another medium port. Increases the flow path and time of the medium and greatly prolongs the reaction time.

In order to achieve the above object, the present invention provides a hydrogen fuel cell bipolar plate with a wavy flow channel structure, which comprises a plate body; the plate body is provided with a plurality of medium channels which are arranged in parallel, each medium channel comprises two vertical sections, and a horizontal section is connected between the two vertical sections; the two vertical sections are respectively connected with a medium through port.

According to the hydrogen fuel cell bipolar plate with the wavy flow channel structure, the vertical section and the horizontal section of the medium channel are both wavy structures.

The utility model aims to provide a hydrogen fuel cell bipolar plate with a wavy flow channel structure, wherein a medium enters from one medium through hole through the arrangement of a zigzag medium channel, passes through a vertical section and a horizontal section of the medium channel and then flows out from the other medium through hole. Increases the flow path and time of the medium and greatly prolongs the reaction time.

Drawings

FIG. 1 is a schematic structural view of the present invention;

FIG. 2 is a schematic structural diagram of the region A in FIG. 1;

FIG. 3 is a schematic view of the structure in the direction A of FIG. 2;

in the figure: 1-plate body, 11-medium through port, 12-medium channel, 121-vertical section and 122-horizontal section.

Detailed Description

For the purpose of making the objects, technical solutions and advantages of the present invention more apparent, the present invention will be further described in detail with reference to the accompanying drawings and embodiments, it being understood that the specific embodiments described herein are merely illustrative of the present invention and are not intended to limit the present invention.

In the description of the present invention, it is to be understood that the terms "central," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," "circumferential," and the like are used in the orientations and positional relationships indicated in the drawings for convenience in describing the utility model and to simplify the description, and are not intended to indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and are therefore not to be considered limiting of the utility model.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.

In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can, for example, be fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.

In the present invention, unless otherwise expressly stated or limited, the first feature "on" or "under" the second feature may be directly contacting the first and second features or indirectly contacting the first and second features through an intermediate. Also, a first feature "on," "over," and "above" a second feature may be directly or diagonally above the second feature, or may simply indicate that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature may be directly under or obliquely under the first feature, or may simply mean that the first feature is at a lesser elevation than the second feature.

In the description herein, references to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the utility model. In this specification, the schematic representations of the terms used above are not necessarily intended to refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, various embodiments or examples and features of different embodiments or examples described in this specification can be combined and combined by one skilled in the art without contradiction.

Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention, and that variations, modifications, substitutions and alterations can be made to the above embodiments by those of ordinary skill in the art within the scope of the present invention.

Referring to fig. 1-3, the present invention provides a hydrogen fuel cell bipolar plate with a wavy flow channel structure, which comprises a plate body 1; a plurality of medium channels 12 arranged in parallel are arranged on the plate body 1, each medium channel 12 comprises two vertical sections 121, and a horizontal section 122 is connected between the two vertical sections 121; the two vertical sections 121 are respectively connected with a medium through port 11;

in use, media enters from one media port 11, passes through the vertical section 121 and the horizontal section 122 of the media channel 12, and then flows out from the other media port 11. Increases the flow path and time of the medium and greatly prolongs the reaction time.

Preferably, the vertical section 121 and the horizontal section 122 of the medium channel 12 are both wave-shaped structures; the path of the medium is increased.

In summary, the present invention provides a hydrogen fuel cell bipolar plate with a wavy flow channel structure, wherein a loop-shaped medium channel is provided to allow a medium to enter from one medium port, pass through a vertical section and a horizontal section of the medium channel, and then flow out from another medium port. Increases the flow path and time of the medium and greatly prolongs the reaction time.

The present invention may be embodied in other specific forms without departing from the spirit or essential attributes thereof, and it should be understood that various changes and modifications can be effected therein by one skilled in the art without departing from the spirit and scope of the utility model as defined in the appended claims.

Claims

1. A hydrogen fuel cell bipolar plate with a wavy flow passage structure is characterized by comprising a plate body; the plate body is provided with a plurality of medium channels which are arranged in parallel, each medium channel comprises two vertical sections, and a horizontal section is connected between the two vertical sections; the two vertical sections are respectively connected with a medium through port.

2. The bipolar plate for a hydrogen fuel cell having a wavy flow channel structure according to claim 1, wherein the vertical and horizontal sections of the medium channel have a wavy structure.