Power conversion equipment

Abstract

The embodiment of the utility model relates to the technical field of energy storage and heat dissipation, in particular to power conversion equipment. The power conversion equipment comprises a shell, an electrical assembly, a heat exchange assembly and a fan assembly, a first opening and a second opening are formed in the shell, a heat dissipation air channel is formed between the first opening and the second opening, the electrical assembly is arranged in the shell and located in the heat dissipation air channel, and the heat exchange assembly is arranged on an airflow flowing path of the heat dissipation air channel and located in the heat dissipation air channel. An included angle is formed between the windward side of the heat exchange assembly and the airflow flowing path of the heat dissipation air channel, and the fan assembly communicates with the heat dissipation air channel. According to the power conversion equipment provided by the embodiment of the specification, the heat exchange assembly and the electrical assembly share one fan assembly to realize ventilation and heat dissipation, and the heat dissipation efficiency is improved. In addition, due to the fact that the included angle exists between the windward side of the heat exchange assembly and the airflow flowing path of the heat dissipation air channel, the heat exchange area of the heat exchange assembly and the air in the heat dissipation air channel is effectively increased, and the heat exchange effect of the heat exchange assembly is improved.

Description

TECHNICAL FIELD

[0001] Embodiments of the present specification relate to the technical field of energy storage heat dissipation, and particularly relate to a power conversion device. BACKGROUND

[0002] With the wide application of energy storage systems, such as electric vehicles, photovoltaic energy storage, wind power energy storage, and renewable energy, the energy density of the energy storage system is gradually improved, and improving the heat dissipation effect of the energy storage system has become an important concern. Traditional heat dissipation methods mostly use natural convection or independent active air cooling systems, but these methods often have low heat dissipation efficiency.

[0003] Therefore, there is an urgent need for a power conversion device to solve the above problems. CONTENT OF THE INVENTION

[0004] The purpose of the embodiments of the present specification is to provide a power conversion device to improve heat dissipation efficiency, and also to increase the heat exchange area of the heat exchange assembly and the gas in the heat dissipation air duct, and improve the heat exchange effect of the heat exchange assembly.

[0005] To achieve this purpose, the embodiments of the present specification adopt the following technical solutions:

[0006] A power conversion device comprises:

[0007] a housing, the housing is provided with a first opening and a second opening, a heat dissipation air duct is formed between the first opening and the second opening, one of the first opening and the second opening is an air inlet, and the other is an air outlet;

[0008] an electrical assembly arranged in the interior of the housing and located in the heat dissipation air duct;

[0009] a heat exchange assembly arranged on the airflow flow path of the heat dissipation air duct, and the windward surface of the heat exchange assembly has an included angle with the airflow flow path of the heat dissipation air duct; and

[0010] a fan assembly in communication with the heat dissipation air duct.

[0011] As an optional solution, the heat exchange assembly is arranged in the heat dissipation air duct.

[0012] As an optional solution, the electrical assembly and the heat exchange assembly are arranged in sequence along a first direction, and the electrical assembly is opposite to the air inlet.

[0013] Alternatively, the electrical assembly and the heat exchange assembly are arranged in sequence along a second direction.

[0014] As an optional solution, the interior of the housing is provided with a partition plate, and the partition plate is provided with a ventilation opening.

[0015] The partition plate divides the internal space of the shell, and the electrical component and the heat exchange component are arranged on two sides of the partition plate;

[0016] The first opening is arranged on the side wall on one side of the partition plate, and the first opening and the second opening are arranged on different side walls of the shell.

[0017] As an optional solution, the heat exchange components are distributed on two sides of the ventilation opening along the first direction, and the distance between the ends of the heat exchange components facing the partition plate in the first direction is not less than the width of the ventilation opening on the partition plate in the first direction.

[0018] As an optional solution, the fan component is arranged at the ventilation opening of the partition plate.

[0019] As an optional solution, the heat exchange component is arranged outside the shell, and the heat exchange component is arranged at the first opening or the second opening.

[0020] As an optional solution, the electrical component is opposite to the air inlet.

[0021] As an optional solution, the shell comprises a top wall and a side wall connected at an included angle, the top wall is provided with the air outlet, and the side wall is provided with the air inlet.

[0022] As an optional solution, the fan component is mounted in the air outlet.

[0023] The power conversion device provided by the embodiments of the present disclosure comprises a shell, an electrical component, a heat exchange component, and a fan component, wherein the shell is provided with a first opening and a second opening, a heat dissipation air duct is formed between the first opening and the second opening, one of the first opening and the second opening is an air inlet, and the other is an air outlet, the electrical component is arranged in the heat dissipation air duct inside the shell, the heat exchange component is arranged on the airflow flow path of the heat dissipation air duct, and the windward surface of the heat exchange component forms an included angle with the airflow flow path of the heat dissipation air duct, and the fan component is in communication with the heat dissipation air duct. The power conversion device, by arranging the electrical component in the heat dissipation air duct inside the shell, and making the fan component in communication with the heat dissipation air duct, and arranging the heat exchange component on the airflow flow path of the heat dissipation air duct, makes the heat exchange component and the electrical component share one fan component to realize ventilation and heat dissipation, thereby improving the heat dissipation efficiency. In addition, since the windward surface of the heat exchange component forms an included angle with the airflow flow path of the heat dissipation air duct, the heat exchange area of the heat exchange component and the gas in the heat dissipation air duct is effectively increased, and the heat exchange effect of the heat exchange component is improved. BRIEF DESCRIPTION OF DRAWINGS

[0024] Figure 1 is a structural section view of the power conversion device provided by the embodiment one of the present specification Figure 1 ;

[0025] Figure 2 is a structural section view of the power conversion device provided by the embodiment one of the present specification Figure 2 ;

[0026] Figure 3 is a structural section view of the power conversion device provided by the embodiment two of the present specification Figure 1 ;

[0027] Figure 4 is a structural section view of the power conversion device provided by the embodiment two of the present specification Figure 2 ;

[0028] Figure 5 is a structural section view of the power conversion device provided by the embodiment three of the present specification Figure 1 ;

[0029] Figure 6 is a structural section view of the power conversion device provided by the embodiment three of the present specification Figure 2 ;

[0030] Figure 7 is a structural section view of the power conversion device provided by the embodiment four of the present specification Figure 1 ;

[0031] Figure 8 is a structural section view of the power conversion device provided by the embodiment four of the present specification Figure 2 .

[0032] in the figure:

[0033] 1, shell; 11, top wall; 111, first opening; 12, side wall; 121, second opening; 13, heat dissipation air duct; 14, partition; 2, electrical component; 3, heat exchange component; 4, fan component. DETAILED DESCRIPTION

[0034] In order to make the technical problems solved by the embodiments of the present specification, the technical solutions adopted and the technical effects achieved more clear, the technical solutions of the embodiments of the present specification will be further described below in combination with the drawings and through specific embodiments.

[0035] In the description of the embodiments of the present specification, unless otherwise explicitly specified and limited, the terms "connected", "connected", "fixed" should be understood broadly, for example, can be fixedly connected, can be detachably connected, or integrated; can be mechanically connected, can be electrically connected; can be directly connected, can be indirectly connected through an intermediate medium, can be the internal communication of two elements or the interaction relationship between two elements. For those skilled in the art, the specific meaning of the above terms in the embodiments of the present specification can be understood according to the specific circumstances.

[0036] In the embodiments of the present specification, unless otherwise explicitly specified and limited, the "upper" or "lower" of the first feature to the second feature can include that the first and second features are in direct contact, or the first and second features are not in direct contact but are in contact through another feature between them. Moreover, the "upper", "above" and "on" of the first feature to the second feature includes that the first feature is directly above and obliquely above the second feature, or only indicates that the horizontal height of the first feature is higher than that of the second feature. The "below", "under" and "under" of the first feature to the second feature includes that the first feature is directly below and obliquely below the second feature, or only indicates that the horizontal height of the first feature is less than that of the second feature.

[0037] In the description of the embodiments, the terms "upper", "lower", "left", "right" and other orientation or position relationship are based on the orientation or position relationship shown in the drawings, and are only for the convenience of description and simplification of operation, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, therefore cannot be understood as a limitation to the embodiments of the present specification. In addition, the terms "first", "second" are only used to distinguish in the description, and have no special meaning.

[0038] Embodiment one

[0039] With the wide application of energy storage systems, such as electric vehicles, photovoltaic energy storage, wind power energy storage, renewable energy and other fields, the energy density of the energy storage system is gradually improved, and improving the heat dissipation effect of the energy storage system has become an important concern. The traditional heat dissipation method mostly uses natural convection or independent active air cooling system, but these methods often have the problem of low heat dissipation efficiency.

[0040] In order to solve the above problems, such as Figure 1 and Figure 2As shown, the embodiment provides a power conversion device, which comprises a shell 1, an electrical component 2, a heat exchange component 3 and a fan component 4, wherein the shell 1 is provided with a first opening 121 and a second opening 111, and a heat dissipation air duct 13 is formed between the first opening 121 and the second opening 111, one of the first opening 121 and the second opening 111 is an air inlet, and the other is an air outlet, the electrical component 2 is arranged in the interior of the shell 1 and located in the heat dissipation air duct 13, the heat exchange component 3 is arranged on the airflow flow path of the heat dissipation air duct 13, and there is an included angle between the windward surface of the heat exchange component 3 and the airflow flow path of the heat dissipation air duct 13, and the fan component 4 is communicated with the heat dissipation air duct 13. The power conversion device provided by the embodiment can ensure the protection effect of the electrical component 2 by arranging the electrical component 2 in the heat dissipation air duct 13 in the interior of the shell 1, and the fan component 4 is communicated with the heat dissipation air duct 13, and the heat exchange component 3 is arranged on the airflow flow path of the heat dissipation air duct 13, so that the heat exchange component 3 and the electrical component 2 can share one fan component 4 to realize ventilation and heat dissipation, and the heat dissipation efficiency is improved. In addition, since there is an included angle between the windward surface of the heat exchange component 3 and the airflow flow path in the heat dissipation air duct 13, the heat exchange area of the heat exchange component 3 and the gas in the heat dissipation air duct 13 is effectively increased, and the heat exchange effect of the heat exchange component 3 is improved.

[0041] It should be noted that "the windward surface of the heat exchange component 3 has an included angle with the airflow flow path in the heat dissipation air duct 13" means that the windward surface of the heat exchange component 3 is not parallel to the airflow flow path in the heat dissipation air duct 13, which can also be understood as that the plane where the largest side of the heat exchange component 3 is located has an included angle with the airflow flow path in the heat dissipation air duct 13, and the included angle is not zero.

[0042] Optionally, in the embodiment, the electrical component 2 can be a power conversion device, such as PCS, inverter, DCAC, DCDC, or one device in PCS, inverter, DCAC, DCDC, such as IGBT, reactor, capacitor, capacitor array, etc. The electrical component 2 can also be a switch box, and the specific form of the electrical component 2 is not limited in the embodiment. Optionally, in the embodiment, the heat exchange component 3 can be an air cooler, and the medium in the air cooler can be used to realize heat exchange and cooling of the battery module in the energy storage system. The medium in the air cooler absorbs the heat of the battery module to be heated, and the heated medium is cooled by air cooling in the heat exchange component 3, and the cooled medium cools the battery module again, so as to realize the reciprocating cooling of the battery module and ensure the cooling effect of the battery module. Of course, the heat exchange component 3 can also cool the electrical component 2.

[0043] Optionally, in this embodiment, the heat exchange component 3 is disposed in the heat dissipation duct 13. By also disposing the heat exchange component 3 in the heat dissipation duct 13 inside the housing 1, not only is the protection effect of the heat exchange component 3 achieved, but it is also possible to ensure that the heat exchange component 3 is connected to the heat dissipation duct 13, and to ensure that the heat exchange component 3 and the electrical component 2 share a fan component 4 for ventilation and heat dissipation.

[0044] Optionally, such as Figure 3 As shown, in this embodiment, the electrical component 2 and the heat exchange component 3 are arranged sequentially along the first direction (left-right direction in the figure), with the electrical component 2 facing the air inlet. Optionally, in this embodiment, the first openings 121 at both ends of the housing 1 in the first direction are both air inlets, and the second opening 111 on the top of the housing 1 is an air outlet. This arrangement allows cold air from the external environment to enter the heat dissipation duct 13 inside the housing 1 through the air inlet (i.e., the first opening 121) driven by the fan component 4. The cold air entering the heat dissipation duct 13 passes sequentially through the electrical component 2 and the heat exchange component 3, and is then discharged through the air outlet (i.e., the second opening 111) on the housing 1. This arrangement ensures that the cold air entering the heat dissipation duct 13 first exchanges heat with the electrical component 2 and then with the heat exchange component 3, effectively guaranteeing the ventilation and heat dissipation effect of the electrical component 2. Furthermore, since the electrical component 2 and the heat exchange component 3 are arranged along the first direction, the space inside the housing 1 in the first direction is fully utilized. In practical applications, in order to adapt to different working conditions, the air outlet can be set on the side wall below the housing 1.

[0045] Optionally, the air-facing surface of the heat exchange component 3 can be perpendicular to the airflow path in the heat dissipation duct 13, allowing the heat exchange component 3 to be placed perpendicular to the horizontal plane. This further increases the heat exchange area between the heat exchange component 3 and the gas in the heat dissipation duct 13, improving the heat exchange effect of the heat exchange component 3. Furthermore, by placing the heat exchange component 3 perpendicular to the horizontal plane, the horizontal space (left-right direction in the figure) within the housing 1 can be reduced, and the resistance of the heat exchange component 3 to airflow can also be decreased. Optionally, the air-facing surface of the heat exchange component 3 can also be at other angles to the airflow path in the heat dissipation duct 13, allowing the air-facing surface of the heat exchange component 3 to be arranged obliquely in the vertical direction (up-down direction in the figure). This reduces the height of the housing 1 in the vertical direction (up-down direction in the figure) and allows for the accommodation of a larger heat exchange component 3 while maintaining the same height of the housing 1, thereby improving the heat exchange effect. It should be noted that the angle between the windward side of the heat exchange component 3 and the airflow path in the heat dissipation duct 13 can be adjusted according to the specific space inside the housing 1 to ensure the compactness of the internal space of the housing 1. For example, the angle can be any value from 0 degrees to 90 degrees.

[0046] Optionally, in the embodiment, the shell 1 comprises a top wall 11 and a side wall 12 connected at an angle, the top wall 11 is provided with the air outlet, and the side wall 12 is provided with the air inlet. The above arrangement makes the air outlet located at the top, which is more convenient for the hot air in the heat dissipation air duct 13 to be discharged through the air outlet at the top after heat exchange. In addition, it should be noted that the cold air in the external environment enters the heat dissipation air duct 13 through the air inlet along the horizontal direction (left-right direction in the figure) in sequence through the electrical component 2 and the heat exchange component 3, and is discharged upward through the air outlet on the shell 1. In other embodiments, the heat exchange component 3 can be opposite to the air inlet, so that the cold air entering the heat dissipation air duct 13 passes through the heat exchange component 3 and the electrical component 2 in sequence along the horizontal direction, and is discharged upward through the air outlet on the shell 1, so that the cold air entering the heat dissipation air duct 13 is first exchanged with the heat exchange component 3 and then exchanged with the electrical component 2.

[0047] Optionally, in the embodiment, the fan assembly 4 is installed in the air outlet. By installing the fan assembly 4 in the air outlet, the occupation of the internal space of the shell 1 by the fan assembly 4 is reduced, so that the structure of the shell 1 is more compact. Optionally, in the embodiment, a plurality of fan assemblies 4 are arranged at intervals, so as to further improve the ventilation effect of the heat dissipation air duct 13. The specific number of the fan assembly 4 in the embodiment is not limited, and the specific number can be set according to the demand. Optionally, in other embodiments, the fan assembly 4 communicates with the heat dissipation air duct 13, and the fan assembly 4 can also be installed in the air inlet, or the fan assembly 4 can be installed at other positions, such as the outside of the heat dissipation air duct 13 or the inside of the heat dissipation air duct 13, as long as the fan assembly 4 communicates with the heat dissipation air duct 13, and the fan assembly 4 promotes the airflow circulation of the heat dissipation air duct 13.

[0048] Optionally, in the embodiment, the entire side wall 12 can be provided with the air inlet, so as to improve the air volume entering the shell 1. Optionally, in other embodiments, the air inlet on the side wall 12 can be designed in the form of a magic cube hole, a grid structure or a elbow structure, which can prevent foreign matters from entering the heat dissipation air duct 13 through the air inlet while ensuring the air volume of the air inlet.

[0049] Optionally, in this embodiment, air inlets are provided on both horizontally opposite sidewalls 12 of the housing 1, and two horizontally spaced heat exchange components 3 and two horizontally spaced electrical components 2 are arranged in the heat dissipation duct 13. The two heat exchange components 3 are located between the two electrical components 2, and each heat exchange component 3 is opposite to an air inlet on one of the sidewalls 12. A fan assembly 4 is installed between the two heat exchange components 3, thereby ensuring uniform ventilation and heat dissipation for the two heat exchange components 3 and the two electrical components 2. Optionally, in this embodiment, the two heat exchange components 3 are arranged in a figure-eight shape or an inverted figure-eight shape between the two electrical components 2. Of course, the two heat exchange components 3 can also be arranged in parallel. The fan assembly 4 is located between the two heat exchange components 3 and on top of the two heat exchange components 3. In other embodiments, the number and arrangement of the electrical components 2 and the number and arrangement of the heat exchange components 3 can be adjusted as needed.

[0050] Example 2

[0051] The power conversion device provided in this embodiment is basically the same as that in Embodiment 1. The difference between the power conversion device provided in this embodiment and that in Embodiment 1 is as follows:

[0052] like Figure 4 and Figure 3 As shown, the electrical component 2 and the heat exchange component 3 are arranged sequentially along the second direction (vertical direction in the figure) in the heat dissipation duct 13 inside the housing 1. This arrangement can make full use of the vertical space inside the housing 1, thereby reducing the horizontal space of the housing 1.

[0053] Optionally, in this embodiment, the housing 1 is provided with multiple air inlets spaced apart, and a partition 14 is provided inside the housing 1, dividing the housing 1 into upper and lower layers. Air inlets can be provided in the upper layer space of the housing 1, and air inlets can be provided in the lower layer space of the housing 1. Two heat exchange components 3 arranged in an inverted "V" shape are housed in the upper layer space of the housing 1. The larger opening of the "V" shape formed by the two heat exchange components 3 faces the fan assembly 4, which is located on the opening of the top wall 11 of the housing 1, serving as an air outlet. The smaller opening of the "V" shape formed by the two heat exchange components 3 faces the ventilation opening of the partition 14. An electrical component 2 is housed in the lower layer space of the housing 1. Of course, in practical applications, the partition 14 can also divide the interior of the housing 1 into left and right parts, or front and back parts, with the specific structure varying from the previous embodiment. Figure 4 , Figure 3 Similarly, the only difference lies in the spatial relationship between the two parts inside the shell 1. Of course, it is understandable that there can be multiple partitions 14, for example, dividing the internal space of the shell 1 into more parts.

[0054] The above arrangement makes the cold air in the external environment enter the heat dissipation air duct 13 through the air inlet opposite to the electrical assembly 2 on the lower space of the shell 1 under the driving of the fan assembly 4, then pass through the electrical assembly 2, and then be discharged upward through the air outlet on the shell 1. The cold air in the external environment also enters the heat dissipation air duct 13 through the air inlet opposite to the heat exchange assembly 3, then pass through the heat exchange assembly 3, and then enter the upper space of the shell 1 through the air vent of the partition 14, and then enter the space between the two heat exchange assemblies 3. At this time, another part of the cold air in the external environment enters the upper space of the shell 1 through the opening of the upper space of the shell 1, then blows to the heat exchange assembly 3, and then enters the space between the two heat exchange assemblies 3, and is discharged by the fan assembly 4 after mixing with the air from the lower space of the shell 1. At this time, the heat dissipation between the heat exchange assembly 3 and the electrical assembly 2 does not affect each other.

[0055] It should be emphasized that the first opening 121 and the second opening 11 are arranged on different side walls of the shell 1 respectively means that, as shown in Figure 3 The shell 1 has six side walls, Figure 3 The left and right side walls are each provided with the first opening 121 as the air inlet, and then the second opening 111 as the air outlet can be arranged on the other four side walls of the shell 1, such as the top wall 111, the bottom wall, or the front wall, or the rear wall. Of course, if the second opening 111 as the air outlet is arranged on the part of the left side wall of the shell 1 above the partition 14, the second opening 111 is arranged on the part of the right side wall of the shell 1 above the partition 14, and the left side wall of the shell 1 below the partition 14 is also within the protection scope of the present application. Similarly, if the second opening 111 as the air outlet is arranged on the part of the right side wall of the shell 1 above the partition 14, the second opening 111 is arranged on the part of the left side wall of the shell 1 above the partition 14, and the left side wall of the shell 1 below the partition 14 is also within the protection scope of the present application. Of course, the second opening 111 as the air outlet is arranged on the part of the right side wall of the shell 1 below the partition 14, and the second opening 111 as the air outlet is arranged on the part of the left side wall of the shell 1 below the partition 14 is also possible. In addition, in order to improve the adaptability of the scheme to different working conditions, the second opening 111 can also be used as the air inlet, which is not limited in the present application. Of course, the number of the second opening 111 is not limited. Figure 3 Figure 3 Figure 3 Figure 5

[0056] ​​​​The above arrangement enables the electrical component 2 and the heat exchange component 3 to exchange heat with the cold air in the direct external environment, thereby ensuring the ventilation and heat dissipation effects of the electrical component 2 and the heat exchange component 3. It should be noted that in the embodiment, the baffle 14 separates the air inlets corresponding to the electrical component 2 and the heat exchange component 3, respectively.

[0057] Optionally, in the embodiment, in order to increase the air inlet amount, the electrical component 2 is provided with air inlets on both sides in the left-right direction; in addition, the two heat exchange components 3 are arranged in the shape of an "eight" or an inverted "eight" above the electrical component 2, and the two heat exchange components 3 are provided with air inlets on both sides in the left-right direction. In order to further reduce the ventilation resistance, the gap between the lower ends of the two heat exchange components 3 in the first direction is not less than the width of the ventilation opening on the baffle 14 in the first direction, as shown in Figure 6 the gap between the lower ends of the two heat exchange components 3 in the first direction can be greater than or equal to the width of the ventilation opening on the baffle 14 in the first direction.

[0058] Optionally, in the embodiment, in order to improve the cooling effect of the electrical component 2, the electrical component 2 is located below the heat exchange component 3, at this time, the air for cooling the electrical component 2 is the cold air from the outside, which has a lower temperature, and can increase the temperature difference between the electrical component 2 and the cold air, thereby improving the cooling effect.

[0059] In other embodiments, in order to adapt to different working conditions, the heat exchange component 3 can also be located below the electrical component 2, at this time, the air for cooling the electrical component 2 is the cold air from the outside and the hot air after cooling the heat exchange component 3, at this time, the air for cooling the electrical component 2 has a certain temperature, but the air amount is large, which can ensure a certain cooling effect on the electrical component 2 and improve the cooling effect on the heat exchange component 3.

[0060] Embodiment Three

[0061] The power conversion device provided in the embodiment is basically the same as that in Embodiment Two, and the difference between the power conversion device provided in the embodiment and that in Embodiment Two is that:

[0062] In the embodiment, as shown in Figure 7 and Figure 8 , the electrical component 2 and the heat exchange component 3 are arranged in the second direction (up-down direction in the figure) in the heat dissipation air duct 13 in the shell 1 in sequence. The above arrangement can fully utilize the space in the vertical direction inside the shell 1, thereby reducing the space in the horizontal direction of the shell 1.

[0063] Optionally, in this embodiment, a partition 14 is provided inside the housing 1, and a ventilation opening is provided on the partition 14. The electrical component 2 and the heat exchange component 3 are separated by the partition 14. The electrical component 2 is located above the heat exchange component 3, and the fan component 4 is installed in the ventilation opening. Along the first direction (left-right direction in the figure), the heat exchange component 3 is opposite to the air inlet, and the electrical component 2 is opposite to the air outlet, wherein the first direction and the second direction are perpendicular to each other. The above arrangement allows cold air from the external environment to enter the heat dissipation duct 13 through the air inlet under the drive of the fan component 4. After passing through the heat exchange component 3 horizontally, it passes upward in sequence through the fan component 4 and the electrical component 2, and then is discharged horizontally through the side air outlet. The above arrangement ensures that the cold air entering the heat dissipation duct 13 first exchanges heat with the heat exchange component 3 and then with the electrical component 2, effectively ensuring the ventilation and heat dissipation effect of the heat exchange component 3; in addition, it also protects the fan component 4 from damage by external forces.

[0064] It should be noted that, in this embodiment, an air inlet and an air outlet are provided on the side wall 12. Optionally, in this embodiment, the two heat exchange components 3 are arranged in a figure-eight shape below the electrical component 2, and air inlets are provided on both sides of the two heat exchange components 3 in the left and right directions, and air outlets are provided on both sides of the electrical component 2 in the left and right directions.

[0065] Example 4

[0066] The power conversion device provided in this embodiment is basically the same as that in Embodiment 1. The difference between the power conversion device provided in this embodiment and that in Embodiment 1 is as follows:

[0067] like ​ and ​ As shown, in this embodiment, the heat exchange component 3 is disposed outside the housing 1, and the heat exchange component 3 is opposite to the air outlet. This arrangement reduces the space occupied by the heat exchange component 3 inside the housing 1, making the structure of the housing 1 more compact.

[0068] Optionally, in this embodiment, the electrical component 2 is opposite to the air inlet, and the heat exchange component 3 is located above the electrical component 2. This arrangement ensures that, driven by the fan component 4, cold air from the outside environment enters the heat dissipation duct 13 through the air inlet, passes horizontally through the heat exchange component 3, and then flows upwards through the air outlet and the heat exchange component 3, thus guaranteeing effective ventilation and heat dissipation for the heat exchange component 3. Of course, in practical applications, to improve the heat dissipation effect on the heat exchange component 3, the fan component 4 can also use a suction method to draw in cold air from the outside through the heat exchange component 3 into the heat dissipation duct 13, and then dissipate heat from the electrical component 2.

[0069] Optionally, in the embodiment, the electrical component 2 is provided with air inlets on both sides in the left-right direction. Optionally, in the embodiment, the two heat exchange components 3 are arranged in the shape of an "eight" above the fan component 4, and the large opening of the "eight" is downward and covers the fan component 4.

[0070] Obviously, the above embodiments of the present specification are only examples for the sake of clear illustration of the present specification, and are not a limitation on the embodiments of the present specification. For those skilled in the art, other different forms of changes or variations can be made on the basis of the above description. Here, it is not necessary and also impossible to exhaust all the embodiments. Any modification, equivalent replacement and improvement, etc. made within the spirit and principle of the present specification should be included in the protection scope of the claims of the present specification.

Claims

1. A power conversion device, characterized in that, include: The housing (1) has a first opening (121) and a second opening (111) on it. A heat dissipation duct (13) is formed between the first opening (121) and the second opening (111). One of the first opening (121) and the second opening (111) is an air inlet and the other is an air outlet. Electrical components (2) are disposed inside the housing (1) and located in the heat dissipation duct (13); A heat exchange component (3) is disposed on the airflow path of the heat dissipation duct (13), and the windward surface of the heat exchange component (3) forms an angle with the airflow path of the heat dissipation duct (13); and The fan assembly (4) is connected to the heat dissipation duct (13).

2. The power conversion device according to claim 1, characterized in that, The heat exchange component (3) is disposed in the heat dissipation duct (13).

3. The power conversion device according to claim 2, characterized in that, The electrical component (2) and the heat exchange component (3) are arranged sequentially along the first direction, and the electrical component (2) is opposite to the air inlet; Alternatively, the electrical component (2) and the heat exchange component (3) are arranged sequentially along the second direction.

4. The power conversion device according to claim 3, characterized in that, The shell (1) is provided with a partition (14) inside, and the partition (14) has a ventilation opening; The partition (14) divides the internal space of the housing (1), and the electrical components (2) and the heat exchange components (3) are located on both sides of the partition (14); The housing (1) has the first opening (121) on the side wall on both sides of the partition (14), and the housing (1) has the second opening (111) on the side wall on one side of the partition (14), and the first opening (121) and the second opening (111) are respectively located on different side walls of the housing (1).

5. The power conversion device according to claim 4, characterized in that, The heat exchange components (3) are distributed on both sides of the vent along the first direction, and the distance between the end of the heat exchange components (3) facing the partition (14) in the first direction is not less than the width of the vent on the partition (14) in the first direction.

6. The power conversion device according to claim 4, characterized in that, The fan assembly (4) is located at the vent of the partition (14).

7. The power conversion device according to claim 1, characterized in that, The heat exchange component (3) is disposed outside the housing (1), and the heat exchange component (3) is disposed at the first opening (121) or the second opening (111).

8. The power conversion device according to claim 7, characterized in that, The electrical component (2) is opposite to the air inlet.

9. The power conversion device according to claim 1, characterized in that, The housing (1) includes a top wall (11) and a side wall (12) connected at an angle. The top wall (11) has the air outlet, and the side wall (12) has the air inlet.

10. The power conversion device according to claim 9, characterized in that, The fan assembly (4) is installed in the air outlet.

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