CN218827257U

CN218827257U - Air-cooled fuel cell assembly capable of cold starting at low temperature and air-cooled fuel cell

Info

Publication number: CN218827257U
Application number: CN202221698216.6U
Authority: CN
Inventors: 陆维; 陈洵; 耿珺; 魏刚
Original assignee: Spic Hydrogen Energy Technology Development Co Ltd
Current assignee: Spic Hydrogen Energy Technology Development Co Ltd
Priority date: 2022-07-01
Filing date: 2022-07-01
Publication date: 2023-04-07
Anticipated expiration: 2032-07-01

Abstract

The utility model discloses an air-cooled fuel cell subassembly, air-cooled fuel cell that can cold start at low temperature, air-cooled fuel cell subassembly that can cold start at low temperature includes reactor core and electric heating member, and the reactor core includes a plurality of monocells of superpose in proper order, and at least one side of reactor core on its length direction is equipped with electric heating member, and electric heating member and a plurality of monocells all contact. The utility model discloses an air-cooled fuel cell subassembly that can cold start at low temperature can heat up the reactor core fast, realizes the quick steady cold start of air-cooled fuel cell.

Description

Air-cooled fuel cell module capable of cold start at low temperature, and air-cooled fuel cell

Technical Field

The utility model relates to a battery technology field specifically, relates to an air-cooled fuel cell subassembly, air-cooled fuel cell that can cold start at low temperature.

Background

The proton exchange membrane air-cooled fuel cell is a reaction device for converting chemical energy into electric energy, and in the working process of the proton exchange membrane air-cooled fuel cell, consumed fuel is hydrogen, reaction products are water, and harmful emissions are zero, so that the proton exchange membrane air-cooled fuel cell is one of the cleanest energy sources. And the hydrogen-air cooling type fuel cell is a high-efficiency energy utilization mode, and therefore, is an important reserve energy source for realizing sustainable development of human beings.

When the air-cooled fuel cell is started at a temperature lower than zero, the generated water freezes inside the air-cooled fuel cell because the product of the air-cooled fuel cell is water. The water produced by the air-cooled fuel cell freezes inside, which hinders the electrochemical reaction and the reaction gas from being transported through the porous medium. When freezing completely blocks the inside of the air-cooled fuel cell, if the temperature of the air-cooled fuel cell does not rise above zero, a low-temperature start failure may result. Meanwhile, if water freezes in the air-cooled fuel cell, certain mechanical damage can be caused to the internal structure of the air-cooled fuel cell, and the service life of the air-cooled fuel cell is influenced. Therefore, when the air-cooled fuel cell is started in a sub-zero temperature environment, it is necessary to raise the air-cooled fuel cell temperature to above zero as quickly as possible. With the gradual commercialization of air-cooled fuel cells, the cold start capability becomes an important index for measuring the performance of air-cooled fuel cells.

The related art cold start air-cooled fuel cell includes two ways of heating the cell plate by the heating wire and heating the temperature in the case of the air-cooled fuel cell by the heating device, however, the above heating structure is not reasonable in layout, and there are many problems, such as low heating efficiency, the cell cannot be rapidly cold started, and the arrangement of the heating device affects the heat dissipation of the cell, resulting in the performance degradation of the air-cooled fuel cell.

SUMMERY OF THE UTILITY MODEL

The present invention aims at solving at least one of the technical problems in the related art to a certain extent.

Therefore, the embodiment of the utility model provides an air-cooled fuel cell assembly that can cold start at low temperature, this air-cooled fuel cell assembly that can cold start at low temperature can heat up the reactor core fast, realizes the quick steady cold start of air-cooled fuel cell.

The embodiment of the utility model also provides an air-cooled type fuel cell.

The utility model discloses can cold start's of low temperature air-cooled fuel cell subassembly includes: a core comprising a plurality of single cells stacked in sequence; the reactor core is provided with the electric heating member on at least one side of the length direction of the reactor core, and the electric heating member is in contact with the monocells.

The utility model discloses air-cooled fuel cell subassembly, at least one side of reactor core on its length direction is equipped with electric heating member, and electric heating member all contacts with a plurality of monocells, thereby can be when air-cooled fuel cell temperature is less than zero, utilize electric heating member to a plurality of monocells rapid heating, realize the steady quick cold start of air-cooled fuel cell, guarantee the suitability of air-cooled fuel cell under extreme environment, in addition, the electric heating member of this application sets up the side at the reactor core, can not interfere air-cooled fuel cell's radiating wind channel, and single electric heating member can realize the heating of a plurality of monocells, moreover, the steam generator is simple in structure, and is low in cost.

In some embodiments, a thermally conductive silicone gel is disposed on a side of the electrical heating element facing the core.

In some embodiments, a plurality of protrusions are provided on a side surface of the electric heating element facing the core, the plurality of protrusions are arranged at intervals in a height direction of the core, and the plurality of protrusions are in one-to-one correspondence with and contact with the plurality of single cells.

In some embodiments, in the height direction of the core, a plurality of the protrusions and a plurality of the single cells are arranged in a staggered manner, and the protrusions are attached to at least partial surfaces of the corresponding single cells.

In some embodiments, the electrical heating element is a plate structure.

In some embodiments, the air-cooled fuel cell module further includes an upper end plate and a lower end plate, the upper end plate and the lower end plate are respectively connected to both ends of the core in a height direction of the core, and the electric heating member is connected to both the upper end plate and the lower end plate.

The utility model discloses air-cooled fuel cell includes casing and battery pack, the casing has and holds the chamber, battery pack locates hold the intracavity, battery pack is above-mentioned embodiment air-cooled fuel cell pack that can low temperature cold start.

The utility model discloses air-cooled fuel cell through adopting the above-mentioned air-cooled fuel cell subassembly that can the cold start of low temperature, the battery of fuel can realize the cold start of low temperature fast and stably.

In some embodiments, the air-cooled fuel cell further includes a heat dissipation fan, the housing has an air inlet and an air outlet which are communicated with the accommodating cavity, and the heat dissipation fan is disposed in the accommodating cavity and between the air outlet and the core.

Drawings

Fig. 1 is a schematic structural view of an air-cooled fuel cell module capable of cold start at low temperature according to an embodiment of the present invention.

Fig. 2 is a partial structural schematic diagram of an air-cooled fuel cell assembly capable of cold start at low temperature according to an embodiment of the present invention.

Fig. 3 is a partial structural schematic view of an air-cooled fuel cell module capable of cold start at low temperature according to another embodiment of the present invention.

Fig. 4 is a schematic structural view of an air-cooled fuel cell according to an embodiment of the present invention.

Reference numerals are as follows:

the reactor core comprises a reactor core 1, a single cell 11, an electric heating element 2, heat-conducting silica gel 3, a protrusion 4, an upper end plate 5, a lower end plate 6, a cooling fan 7 and a shell 8.

Detailed Description

Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings. The embodiments described below by referring to the drawings are exemplary intended for explaining the present invention, and should not be construed as limiting the present invention.

As shown in fig. 1 to 4, an air-cooled fuel cell module capable of cold start at low temperature according to an embodiment of the present invention includes a core 1 and an electric heating member 2.

Specifically, as shown in fig. 1, the core 1 includes a plurality of single cells 11 stacked in sequence, the core 1 is provided with an electric heating member 2 at least one side in a length direction thereof, and the electric heating member 2 is in contact with each of the plurality of single cells 11. It can be understood that, due to the side surface of the core 1 where the electric heating member 2 is disposed, and the electric heating member 2 is in contact with each single cell 11, the electric heating member 2 can rapidly transfer heat to the plurality of single cells 11, thereby achieving rapid temperature rise of the core 1, so that the air-cooled fuel cell can be rapidly started when the temperature is lower than zero. Preferably, the core 1 is provided with electric heating members 2 at both sides in a length direction thereof to further improve heating efficiency.

The utility model discloses air-cooled fuel cell assembly, at least one side of reactor core 1 on its length direction is equipped with electric heating member 2, and electric heating member 2 all contacts with a plurality of monocells 11, thereby can be when air-cooled fuel cell temperature is less than zero, utilize electric heating member 2 to a plurality of monocells 11 rapid heating, realize the steady quick cold start of air-cooled fuel cell, guarantee the suitability of air-cooled fuel cell under extreme environment, in addition, the electric heating member 2 of this application sets up the side at reactor core 1, can not interfere air-cooled fuel cell's radiating air duct, and single electric heating member 2 can realize the heating of a plurality of monocells 11, moreover, the steam generator is simple in structure, and is low in cost.

Preferably, as shown in fig. 2, a heat conductive silicone rubber 3 is disposed on a side of the electric heating member 2 facing the core 1. Therefore, the heat conducting silica gel 3 can improve the heat transfer efficiency, so that the air-cooled fuel cell can be rapidly heated, and efficient cold start is realized. In addition, after the electric heating element 2 is arranged, due to factors such as assembly errors, a part of the single cells 11 may not be in good contact with the electric heating element 2, and at this time, the heat-conducting silica gel 3 may be used to fill the gap between the single cells 11 and the electric heating element 2, so as to ensure that the electric heating element 2 can stably transfer heat to all the single cells 11.

In addition, the means of the present application for ensuring that the electric heating member 2 directly transfers heat with the single cells 11 is not limited to providing the heat conductive silicone rubber 3, for example, as shown in fig. 3, a plurality of protrusions 4 are provided on the side of the electric heating member 2 facing the core 1, the plurality of protrusions 4 are arranged at intervals in the height direction of the core 1, and the plurality of protrusions 4 are in one-to-one correspondence and contact with the plurality of single cells 11. Thus, when the electric heating element 2 has a clearance with a certain cell 11, the protrusion 4 extending towards the cell 11 may compensate for the clearance distance, i.e. the protrusion 4 may be in contact with the cell 11 to achieve heat transfer between the electric heating element 2 and the cell 11.

Alternatively, as shown in fig. 3, the plurality of protrusions 4 and the plurality of unit cells 11 are arranged in a staggered manner in the height direction of the core 1, and the protrusions 4 are at least partially surface-fitted to the corresponding unit cells 11. Therefore, the protrusion 4 and the single cell 11 are jointed, so that the contact stability of the protrusion and the single cell can be ensured, the contact area is large, and the heat transfer efficiency can be improved.

Alternatively, the electric heating member 2 is a plate-type structural member. The plate-type structural member is suitable for being matched with the side surface of the reactor core 1, so that the assembly is convenient, and the electric heating part 2 with a regular structure is beneficial to the contact with the plurality of single cells 11.

In some embodiments, as shown in fig. 1, the air-cooled fuel cell assembly capable of cold start at low temperature further includes an upper end plate 5 and a lower end plate 6, the upper end plate 5 and the lower end plate 6 are respectively connected to both ends of the core 1 in a height direction of the core 1, and the electric heating member 2 is connected to both the upper end plate 5 and the lower end plate 6.

The utility model discloses air-cooled fuel cell includes casing 8 and battery pack, and casing 8 has and holds the chamber, and battery pack locates and holds the intracavity, and battery pack is the air-cooled fuel cell subassembly that can the cold start of low temperature of above-mentioned embodiment.

Further, as shown in fig. 4, the air-cooled fuel cell further includes a heat dissipation fan 7, the housing 8 has an air inlet and an air outlet communicated with the accommodating cavity, and the heat dissipation fan 7 is disposed in the accommodating cavity and between the air outlet and the core 1. It should be noted that the energy conversion efficiency of the air-cooled fuel cell is about 50%, the rest energy is dissipated in the form of heat energy, and if the temperature of the air-cooled fuel cell is increased due to the fact that the heat cannot be dissipated in time, the service life of the air-cooled fuel cell will be shortened, therefore, the heat dissipation fan 7 can be used for dissipating heat of the air-cooled fuel cell, so that the air-cooled fuel cell is maintained at a proper temperature, the heat dissipation fan 7 is arranged between the air outlet and the reactor core 1, and the arrangement of the electric heating element 2 does not interfere with the heat dissipation air duct.

In the description of the present invention, it is to be understood that the terms "center", "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, indicate the orientation or positional relationship indicated based on the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the indicated component or element must have a particular orientation, be constructed and operated in a particular orientation, and therefore should not be construed as limiting the present invention.

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 to implicitly indicate 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 explicitly defined otherwise.

In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," and "fixed" are to be construed broadly and may, for example, be fixedly connected, detachably connected, or integrally formed; may be mechanically coupled, may be electrically coupled or may be in communication with each other; they may be directly connected or indirectly connected through intervening media, or they may be interconnected within two elements or in a relationship where two elements interact with each other unless otherwise specifically limited. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.

In the present application, unless expressly stated or limited otherwise, the first feature may be directly on or directly under the second feature or indirectly via intermediate members. 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 present disclosure, the terms "one embodiment," "some embodiments," "an example," "a specific example," or "some examples" or the like 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 present disclosure. 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. Moreover, various embodiments or examples and features of various embodiments or examples described in this specification can be combined and combined by one skilled in the art without being mutually inconsistent.

Although embodiments of the present invention have been shown and described, 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 without departing from the scope of the present invention.

Claims

1. An air-cooled fuel cell assembly capable of low-temperature cold start, characterized by comprising:

a core including a plurality of unit cells stacked in sequence;

and the electric heating element is arranged on at least one side of the reactor core in the length direction of the reactor core, and the electric heating element is in contact with the single cells.

2. The air-cooled fuel cell assembly capable of cold start at low temperature according to claim 1, wherein a thermally conductive silicone gel is provided on a side of the electric heating element that faces the core.

3. The air-cooled fuel cell assembly capable of cold start at low temperature according to claim 1, wherein a plurality of protrusions are provided on a side surface of the electric heating element facing the core, the plurality of protrusions are arranged at intervals in a height direction of the core, and the plurality of protrusions are in one-to-one correspondence with and contact with the plurality of unit cells.

4. The air-cooled fuel cell assembly capable of cold start at low temperature according to claim 3, wherein the plurality of protrusions and the plurality of unit cells are arranged alternately in the height direction of the core, and the protrusions are in at least partial surface contact with the corresponding unit cells.

5. An air-cooled fuel cell assembly capable of cold start at low temperature according to claim 1, wherein the electric heating member is a plate-type structural member.

6. The air-cooled fuel cell assembly capable of cold start at low temperature according to claim 1, further comprising an upper end plate and a lower end plate, the upper end plate and the lower end plate being connected to both ends of the core in a height direction of the core, respectively, the electric heating element being connected to both the upper end plate and the lower end plate.

7. An air-cooled fuel cell, comprising a housing having a housing cavity, and a cell assembly provided in the housing cavity, wherein the cell assembly is the air-cooled fuel cell assembly according to any one of claims 1 to 6, which can be cold-started at low temperature.

8. The air-cooled fuel cell according to claim 7, further comprising a radiator fan, the casing having an inlet port and an outlet port that communicate with the accommodation chamber, the radiator fan being provided in the accommodation chamber between the outlet port and the core.