CN215765664U

CN215765664U - Power generation system, electrical box and air conditioner comprising same

Info

Publication number: CN215765664U
Application number: CN202121798670.4U
Authority: CN
Inventors: 杜斌; 王京; 陈连波; 方明照; 冯上贤
Original assignee: Gree Electric Appliances Inc of Zhuhai
Current assignee: Gree Electric Appliances Inc of Zhuhai
Priority date: 2021-08-03
Filing date: 2021-08-03
Publication date: 2022-02-08
Anticipated expiration: 2031-08-03

Abstract

The utility model provides a power generation system, an electrical box and an air conditioner comprising the same, relates to the technical field of air conditioners, and solves the technical problems that the temperature of the electrical box in a photovoltaic air conditioner is increased and the power generation amount is limited. The power generation system comprises a thermoelectric generation piece, wherein the high-temperature side of the thermoelectric generation piece is arranged on a heat source, the low-temperature side of the thermoelectric generation piece is arranged on a refrigerant pipeline, and the thermoelectric generation piece can generate electric energy by utilizing the temperature difference between the heat source and the refrigerant pipeline; the electrical box comprises an electrical box body, an electronic element arranged on the electrical box body and a power generation system arranged between the electronic element and the refrigerant pipeline; the air conditioner includes an electric appliance box. The thermoelectric generation piece is applied to the photovoltaic air conditioner, the cold and hot temperature difference is utilized for generating electricity, and the heat dissipation problem, the generated energy problem and the like of the photovoltaic air conditioner are solved by utilizing the thermoelectric conversion characteristic of the thermoelectric generation piece; the heat productivity of the heat source is converted into electric energy, the temperature rise inside the photovoltaic electric appliance box is reduced, and the power generation efficiency of the photovoltaic air conditioner is indirectly improved.

Description

Power generation system, electrical box and air conditioner comprising same

Technical Field

The utility model relates to the technical field of air conditioners, in particular to a power generation system, an electrical box and an air conditioner comprising the same.

Background

The photovoltaic electric appliance box is used for supplying power to the photovoltaic air conditioner and sending redundant power to a power grid. With the improvement of power level, the heat productivity of the photovoltaic electric appliance box is larger and larger, the temperature rise of devices such as a power module and each PFC inductor is obvious, and the requirement on the heat dissipation capacity of the machine body is higher and higher. The traditional photovoltaic air conditioner uses a radiator at the heating part of an electric appliance box, but a lot of heat is not conducted out in time, so that the temperature inside the electric appliance box is directly raised, and the operation safety of the photovoltaic air conditioner is seriously threatened. The middle east region is sufficient in illumination and very suitable for the photovoltaic air conditioner, but the ambient temperature of the middle east region can often reach more than 50 ℃, and the photovoltaic air conditioner operates in a derating way, so that the generating capacity of the photovoltaic air conditioner is severely limited.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a power generation system, an electrical box and an air conditioner comprising the same, and aims to solve the technical problems that the temperature of the electrical box in a photovoltaic air conditioner is increased and the power generation amount is limited in the prior art.

In order to achieve the purpose, the utility model provides the following technical scheme:

the utility model provides a power generation system which comprises a thermoelectric generation piece, wherein the high-temperature side of the thermoelectric generation piece is arranged on a heat source, the low-temperature side of the thermoelectric generation piece is arranged on a refrigerant pipeline, and the thermoelectric generation piece can generate electric energy by utilizing the temperature difference between the heat source and the refrigerant pipeline.

As a further improvement of the present invention, the power generation system further includes a heat conduction sheet provided on the high temperature side to conduct heat.

As a further improvement of the present invention, the power generation system further includes a heat conduction sheet provided on the low temperature side to conduct heat.

As a further improvement of the present invention, the thermally conductive sheet is made of an aluminum oxide or aluminum nitride material.

As a further improvement of the utility model, the heat source is an IGBT or a PFC inductor.

The utility model provides an electrical box which comprises an electrical box body, an electronic element arranged on the electrical box body and a power generation system arranged between the electronic element and a refrigerant pipeline.

As a further improvement of the utility model, the electronic element is an IGBT welded on a PCB.

As a further improvement of the present invention, the electronic component is a PFC inductor.

As a further improvement of the utility model, the number of the electronic elements is multiple, and the thermoelectric generation piece is connected with part or all of the electronic elements.

The utility model provides an air conditioner which comprises an electrical box.

As a further improvement of the utility model, the air conditioner is a photovoltaic air conditioner.

Compared with the prior art, the utility model has the following beneficial effects:

according to the power generation system provided by the utility model, the temperature difference power generation piece is applied to the photovoltaic air conditioner, the power generation is carried out by utilizing the cold and hot temperature difference, and the problems of heat dissipation, power generation and the like of the photovoltaic air conditioner are solved by utilizing the thermoelectric conversion characteristic of the power generation system; thermoelectric conversion is carried out by using the thermoelectric generation piece, the heat productivity of a heat source is converted into electric energy, the temperature rise inside the photovoltaic electric appliance box is reduced, and the power generation efficiency of the photovoltaic air conditioner is indirectly improved; meanwhile, due to the reduction of the environment temperature of the electric appliance box, the generated energy of the photovoltaic air conditioner is improved by improving the derating threshold value of the module; the weight, volume and cost of the photovoltaic electric appliance box are reduced; the thermoelectric power generation piece is utilized to solve the problem of heating of electronic elements in the photovoltaic air conditioner, the application range of the photovoltaic air conditioner is also widened, the photovoltaic air conditioner is suitable for higher environmental temperature, and the application range of the photovoltaic air conditioner is enlarged.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.

FIG. 1 is a schematic perspective view of a photovoltaic air conditioner according to the present invention;

FIG. 2 is a schematic structural diagram of the power generation system of the present invention with IGBT as the heat source;

FIG. 3 is a schematic structural diagram of the power generation system of the present invention with a PCB board as a heat source;

FIG. 4 is a side view of the appliance casing of the present invention;

fig. 5 is a perspective view of the electrical box of the present invention.

In the figure 1, a thermoelectric power generation piece; 2. a high temperature side; 3. a low temperature side; 4. a refrigerant pipeline; 5. a heat conductive sheet; 6. an IGBT; 7. a PFC inductance; 8. a PCB board; 100. an electrical box body; 200. provided is a photovoltaic air conditioner.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more apparent, the technical solutions of the present invention will be described in detail below. It is to be understood that the described embodiments are merely exemplary of the utility model, and not restrictive of the full scope of the utility model. All other embodiments, which can be derived by a person skilled in the art from the examples given herein without any inventive step, are within the scope of the present invention.

As shown in fig. 2 and 3, the present invention provides a power generation system, which includes a thermoelectric generation piece 1, a high temperature side 2 of the thermoelectric generation piece 1 is disposed on a heat source, a low temperature side 3 of the thermoelectric generation piece 1 is disposed on a refrigerant pipeline 4, and the thermoelectric generation piece 1 can generate electric energy by using a temperature difference between the heat source and the refrigerant pipeline 4.

The thermoelectric generation piece 1 generates power by utilizing the temperature difference between the heat generated by the heat source and the cold of the refrigerant in the refrigerant pipeline 4, the temperature near the heat source can be reduced, the waste heat of the heat source is fully utilized, the internal temperature of the electrical box is reduced, the photovoltaic air conditioner is prevented from generating electricity in a derating way, and the problem of reduction of the generated energy caused by derating electricity is solved.

As shown in fig. 4, as an alternative embodiment of the present invention, the power generation system further includes a heat conduction sheet 5 disposed on the high temperature side 2 to conduct heat.

Further, the power generation system further includes a heat conduction sheet 5 provided on the low temperature side 3 for conducting heat.

As an alternative embodiment of the present invention, the heat conductive sheet 5 is made of an aluminum oxide or aluminum nitride material. The heat conductive sheet 5 can also perform an insulating function in addition to a heat conductive function.

Further, in the present embodiment, as shown in fig. 2 and 3, the heat source is an IGBT6 or a PFC inductor 7.

As shown in fig. 4, the present invention provides an electrical box, which includes an electrical box body 100, an electronic component disposed on the electrical box body 100, and the power generation system disposed between the electronic component and the refrigerant pipeline 4.

As shown in fig. 4 and 5, further, the electronic component may be an IGBT6 welded on the PCB 8, a specific pin position of the IGBT6 is welded on the PCB 8, the heat dissipation portion is tightly attached to the high temperature side 2 of the thermoelectric generation sheet 1 through the heat conduction sheet 5, and the low temperature side 3 of the thermoelectric generation sheet 1 is tightly attached to the refrigerant pipeline 4 through the heat conduction sheet 5.

Further, the electronic component may also be a PFC inductor 7.

As shown in fig. 2 to 5, in the present embodiment, the number of the electronic components is plural, and the thermoelectric generation element 1 is connected to a part or all of the electronic components. Specifically, as shown in the figure, the number of the IGBTs 6 is 6, the IGBTs are arranged side by side, and all the IGBTs are connected with the high-temperature side 2 of the thermoelectric generation piece 1 through the heat conducting piece 5; the number of the PFC inductors 7 is three, and all the PFC inductors are connected with the high-temperature side 2 of the thermoelectric generation piece 1 through the heat-conducting piece 5.

Furthermore, the temperature of the refrigerant pipeline 4 is about 15 ℃, the surface temperature of the IGBT6 is about 95 ℃, the temperature difference between the two sides of the thermoelectric generation piece 1 is about 80 ℃, and the heat dissipation effect is improved by increasing the temperature difference between the high-temperature side and the low-temperature side of the thermoelectric generation piece 1.

Furthermore, the temperature of the refrigerant pipeline 4 is about 15 ℃, the surface temperature of the PFC inductor 7 is 110 ℃, the temperature difference of the two sides of the thermoelectric generation piece 1 is about 95 ℃, the temperature difference of the high-temperature side and the low-temperature side of the thermoelectric generation piece 1 is further increased compared with the IGBT scheme, and the heat dissipation effect is greatly improved.

The indirect thermoelectric generation piece 1 converts the heat productivity of the device into electric energy, reduces the heat loss and increases the power generation efficiency of the photovoltaic electric appliance box. Because most of heat of the device is consumed by the thermoelectric generation piece, the temperature rise in the photovoltaic electric appliance box can be reduced, and the total generated energy of the photovoltaic air conditioner can be improved by improving the derating threshold value of the module. The problem of the temperature rise of electrical apparatus box is solved, the weight, the volume and the cost of photovoltaic electrical apparatus box have been reduced simultaneously.

As shown in fig. 1, the utility model further provides an air conditioner, which comprises the electrical box.

Further, the air conditioner is a photovoltaic air conditioner 200.

It should be noted that "inward" is a direction toward the center of the accommodating space, and "outward" is a direction away from the center of the accommodating space.

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 fig. 1 to facilitate the description of the utility model and to simplify the description, but are not intended to indicate or imply that the referenced device or element must have a particular orientation, be constructed and operated in a particular orientation, and are not to be considered as limiting 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.

The above description is only for the specific embodiments of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art can easily conceive of the changes or substitutions within the technical scope of the present invention, and all the changes or substitutions should be covered within the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the appended claims.

Claims

1. The power generation system is characterized by comprising a thermoelectric generation piece, wherein the high-temperature side of the thermoelectric generation piece is arranged on a heat source, the low-temperature side of the thermoelectric generation piece is arranged on a refrigerant pipeline, and the thermoelectric generation piece can generate electric energy by utilizing the temperature difference between the heat source and the refrigerant pipeline.

2. The power generation system of claim 1, further comprising a heat conducting sheet disposed on the high temperature side to conduct heat.

3. The power generation system of claim 2, further comprising a heat conducting sheet disposed on the low temperature side to conduct heat.

4. The power generation system of claim 2 or 3, wherein the heat conducting fins are made of an aluminum oxide or aluminum nitride material.

5. The power generation system of claim 1, wherein the heat source is an IGBT or PFC inductor.

6. An electrical box, characterized by comprising an electrical box body, an electronic element arranged on the electrical box body, and the power generation system as claimed in any one of claims 1 to 5 arranged between the electronic element and a refrigerant pipeline.

7. The appliance box according to claim 6, wherein the electronic component is an IGBT soldered on a PCB board.

8. The appliance cartridge of claim 6, wherein the electronic component is a PFC inductance.

9. The electrical box as claimed in claim 6, wherein the number of the electronic components is plural, and the thermoelectric generation sheet is connected to part or all of the electronic components.

10. An air conditioner characterized by comprising an electrical box according to any one of claims 6 to 9.

11. The air conditioner of claim 10, wherein the air conditioner is a photovoltaic air conditioner.