Power equipment

Abstract

The utility model discloses power equipment, which comprises a box body, a component arranged in an inner cavity of the box body and a heat dissipation device used for dissipating heat of the component, the box body is provided with a first side wall and a second side wall which are oppositely arranged, and the box body is further provided with an air inlet and an air outlet which are communicated with the inner cavity. The air inlet comprises an air inlet and an air outlet, the air outlet comprises a first air outlet and a second air outlet which are oppositely arranged, the first air outlet is formed in the first side wall, the second air outlet is formed in the second side wall, a first heat dissipation channel is formed between the air inlet and the first air outlet, and the first heat dissipation channel is provided with the heat dissipation device; a second heat dissipation channel is formed between the air inlet and the second air outlet, and the second heat dissipation channel is provided with the heat dissipation device. The power equipment provided by the utility model is higher in heat dissipation efficiency.

Description

Technical Field

[0001] The utility model belongs to the technical field of electronic power, and particularly relates to a power device. Background Art

[0002] When a power device is working, the internal components are prone to generate heat. The temperature rise inside the device directly determines the performance of these components. Relying on the natural heat dissipation of the device, the heat dissipation efficiency is low, it is difficult to effectively cool the inside of the device, and the overall heat exchange capacity is greatly limited.

[0003] In order to meet the heat dissipation requirement, currently there are air inlets and air outlets provided on the device which are oppositely arranged. The air inlets and air outlets are oppositely arranged. Cold air enters the inside of the power device through the air inlets, blows towards the radiator and takes away the heat of the radiator through the air outlets. Among them, the heat dissipation air duct is single. After the heat accumulates gradually, the temperature of the air flow rises significantly and the resistance is large, the heat dissipation efficiency is low, it is difficult to effectively cool the inside of the chassis, the overall heat exchange capacity of the power device is greatly limited, and at the same time, the service life and reliability of the components cannot be guaranteed, which will in turn affect the overall service life of the power device. Summary of the Utility Model

[0004] In order to solve the above technical problems, the utility model provides a power device with better heat dissipation effect.

[0005] To achieve the above object, the utility model adopts the following technical scheme:

[0006] A power device includes a box body, components arranged in the inner cavity of the box body, and a heat dissipation device for dissipating heat from the components. The box body has a first side wall and a second side wall which are oppositely arranged. The box body also has an air inlet and an air outlet communicating with the inner cavity. The air outlet includes a first air outlet and a second air outlet which are oppositely arranged. The first air outlet is arranged on the first side wall, and the second air outlet is arranged on the second side wall. A first heat dissipation channel is formed between the air inlet and the first air outlet, and the heat dissipation device is arranged in the first heat dissipation channel; a second heat dissipation channel is formed between the air inlet and the second air outlet, and the heat dissipation device is arranged in the second heat dissipation channel.

[0007] Preferably, the heat dissipation device includes a radiator and a heat exchanger. The heat exchanger includes a first fixing seat, a second fixing seat, and heat exchange rods located between the first fixing seat and the second fixing seat. The first fixing seat and the second fixing seat are of hollow structure, and the number of the heat exchange rods is multiple and each heat exchange rod has a heat exchange channel. The inner cavity includes a first inner cavity and a second inner cavity. The heat exchanger and the radiator are located in the second inner cavity. The first inner cavity and the second inner cavity are separated by a partition board. The partition board is provided with openings, and the openings include a first opening and a second opening. The first opening is communicated with the first fixing seat, and the second opening is communicated with the second fixing seat.

[0008] More preferably, the heat exchanger faces the air inlet. The first heat dissipation channel and the second heat dissipation channel are respectively located on both sides of the heat exchanger. The first heat dissipation channel is provided with a radiator and a heat exchanger, and the second heat dissipation channel is provided with a radiator and a heat exchanger. A first air outlet fan is arranged at the first air outlet. The air inlet side of the first air outlet fan faces the radiator or the heat exchanger, and the air outlet side of the first air outlet fan faces the first air outlet. A second air outlet fan is arranged at the second air outlet. The air inlet side of the second air outlet fan faces the radiator or the heat exchanger, and the air outlet side of the second air outlet fan faces the second air outlet.

[0009] Preferably, the radiator includes a first heat dissipation fin and a second heat dissipation fin. The first heat dissipation fin is fixedly connected with the heat exchange rod, and the projection of the second heat dissipation fin and the heat exchange rod in the first direction at least partially overlaps.

[0010] Preferably, the first heat dissipation channel is provided with the radiator, the second heat dissipation channel is provided with the radiator, and the radiator and the heat exchanger are arranged at intervals.

[0011] More preferably, there is a partition board between the first heat dissipation channel and the second heat dissipation channel. The first heat dissipation channel is provided with a heat exchanger and / or a radiator, the second heat dissipation channel is provided with a heat exchanger and / or a radiator, and a first air outlet fan is arranged at the first air outlet and / or the second air outlet.

[0012] More preferably, the first fixing seat of the heat exchanger and / or the second fixing seat of the heat exchanger have multiple interfaces, and the multiple interfaces are inserted into the first inner cavity with the same or different insertion depths.

[0013] Preferably, the components include a first component and a second component, and the bottom of the first component is higher than the top of the second component.

[0014] Preferably, a fan is provided in the first inner cavity and arranged at different heights along the first direction. The air inlet side of the fan faces the second fixing seat, and the air outlet side of the fan faces the first component or the second component.

[0015] Preferably, components are provided at the first air outlet and / or the second air outlet.

[0016] The present utility model adopts the above scheme and has the following advantages compared with the prior art:

[0017] In the power device of the present utility model, cold air enters from the air inlet into the interior of the box body. The air flow is divided into two parts. One part of the air flow flows out through the first heat dissipation channel, and the other part of the air flow flows out through the second heat dissipation channel. During the flowing process, the flowing path of the air flow is shorter, the resistance suffered is smaller, the temperature rise of the air flow is smaller, and heat dissipation can be carried out more effectively, and the heat dissipation effect is better. Description of the Drawings

[0018] In order to more clearly illustrate the technical solutions of the present utility model, the drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the drawings in the following description are only some embodiments of the present utility model. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0019] Figure 1 A schematic diagram of the power device according to Embodiment 1 of the present utility model;

[0020] Figure 2 Another schematic diagram of the power device according to Embodiment 1 of the present utility model;

[0021] Figure 3 A schematic diagram of the air inlet and air outlet of the power device according to Embodiment 1 of the present utility model;

[0022] Figure 4 A schematic diagram of the heat exchanger and the first radiator according to Embodiment 1 of the present utility model;

[0023] Figure 5 A schematic diagram of the second radiator according to Embodiment 1 of the present utility model;

[0024] Figure 6 A schematic diagram of the heat exchanger and the radiator according to Embodiment 1 of the present utility model;

[0025] Figure 7 A schematic diagram of the heat exchanger with multiple interfaces;

[0026] Figure 8 A schematic diagram of the power device, wherein the heat exchanger has multiple interfaces;

[0027] Figure 9 Another schematic diagram of the power device, where the heat exchanger has multiple interfaces;

[0028] Figure 10 A schematic diagram of the power device according to Embodiment 2 of the present utility model;

[0029] Figure 11 Another schematic diagram of the power device according to Embodiment 2 of the present utility model;

[0030] Figure 12 A schematic diagram of the power device according to Embodiment 3 of the present utility model.

[0031] Wherein,

[0032] 100, box body; 101, first inner cavity; 102, second inner cavity; 1021, partition board; 103, components; 1031, first component; 1032, second component; 107, partition; 1071, first opening; 1072, second opening;

[0033] 1, radiator; 11, first heat dissipation fin; 12, second heat dissipation fin; 13, substrate; 2, air inlet; 21, air inlet fan; 3, first air outlet; 31, second air outlet; 4, heat exchanger; 41, first fixing seat; 42, second fixing seat; 43, heat exchange rod; 431, heat exchange channel; 44, interface; 5, first air outlet fan; 6, second air outlet fan; 7, first heat dissipation channel; 8, second heat dissipation channel; 9, fan. Specific embodiments

[0034] The following elaborates on the preferred embodiments of the present utility model in conjunction with the accompanying drawings, so that the advantages and features of the present utility model can be more easily understood by those skilled in the art. It should be noted here that the description of these embodiments is for helping to understand the present utility model, but does not constitute a limitation to the present utility model. In addition, the technical features involved in the various embodiments of the present utility model described below can be combined with each other as long as they do not conflict with each other.

[0035] Embodiment 1

[0036] Referring to Figures 1 to 9 As shown, this embodiment provides a power device, which can be a photovoltaic inverter, a photovoltaic energy storage integrated machine, a busbar box, etc. The power device includes a box body 100, components 103 arranged in the inner cavity of the box body 100, and a heat dissipation device. The heat exchange device specifically includes a radiator 1 for dissipating heat from the components 103 and a heat exchanger 4 for exchanging heat in the inner cavity.

[0037] Further, the box body 100 has an air inlet 2 and an air outlet that communicate with the inner cavity. The air inlet 2 faces the heat exchanger 4. An air inlet fan 21 is provided at the air inlet 2. The air inlet fan 21 is located in the second inner cavity 102. The air inlet side of the air inlet fan 21 faces the air inlet 2, and the air outlet side of the air inlet fan 21 faces the radiator 1. The air inlet fan 21 enhances the entry of external cold air from the air inlet 2 into the second inner cavity 102. The air outlet includes a relatively arranged first air outlet 3 and a second air outlet 31. A first heat dissipation channel 7 is formed between the air inlet 2 and the first air outlet 3, and a second heat dissipation channel 8 is formed between the air inlet 2 and the second air outlet 32. The first heat dissipation channel 7 and the second heat dissipation channel 8 are respectively located on both sides of the heat exchanger 4. The first heat dissipation channel 7 is provided with the heat exchanger 4 and / or the radiator 1, and the second heat dissipation channel 8 is provided with the heat exchanger 4 and / or the radiator 1. The reason why the external cold air enters from the air inlet 2 and blows to the heat exchanger 4 first and then to the radiator 1 is that the radiator 1 has a higher temperature and greater heat compared to the heat exchanger 4. In this embodiment, the heat exchanger 4 exchanges heat with the low-temperature air first. Since the heat after heat exchange is less than the heat of the radiator itself, the air flow temperature is still lower than that of the radiator after passing through the heat exchanger, so it can play a certain heat dissipation effect on the radiator. If the air flow passes through the radiator first and then through the heat exchanger, the temperature of the air flow will rise sharply after passing through the radiator, and there is basically no temperature difference between the elevated temperature and the heat exchanger, so the heat exchanger cannot be effectively used for heat exchange.

[0038] Specifically in this embodiment, the radiator 1 and the heat exchanger 4 are provided in the first heat dissipation channel 7, and the radiator 1 and the heat exchanger 4 are provided in the second heat dissipation channel 8. The heat exchanger 4 includes a first fixing seat 41 and a second fixing seat 42. The first fixing seat 41 and the second fixing seat 42 have a hollow structure. The inner cavity includes a first inner cavity 101 and a second inner cavity 102. The first inner cavity 101 and the second inner cavity 102 are separated by a partition 107. The partition 107 is provided with a first opening 1071 and a second opening 1072. The first opening 1071 communicates with the first fixing seat 41, and the second opening 1072 communicates with the second fixing seat 42. The heat exchanger 4 further includes heat exchange rods 43 that connect the first fixing seat 41 and the second fixing seat 42. The number of the heat exchange rods 43 is multiple and each heat exchange rod 43 has a heat conduction channel 431. When the high-temperature gas in the first inner cavity 101 flows into the second inner cavity 102 through the first opening 1071 and the first fixing seat 41 and then enters the heat conduction channel 431, the air is cooled by heat exchange and then enters the first inner cavity 101 again through the second fixing seat 42 and the second opening 1072, realizing the heat dissipation inside the first inner cavity 101.

[0039] The first fixing base 41 and the second fixing base 42 of this embodiment have interfaces communicating with the opening, and the number of interfaces of the first fixing base 41 and / or the second fixing base 42 is one or more. When the number of interfaces is multiple, the multiple interfaces are inserted into the first inner cavity 101, and the insertion depths are the same or different, so that the flowing air in the first inner cavity 101 can cover a larger height range, promoting the heat exchange effect of the first inner cavity 101. Refer to Figures 7 to 9 As shown, the first fixing base 41 has one interface 44 communicating with the opening, and the second fixing base 42 has multiple interfaces 44 communicating with the opening. The "first direction" here refers to the width direction of the electrical equipment. The component 103 includes a first component 1031 and a second component 1032. The bottom of the first component 1031 is higher than the top of the second component 1032. The interfaces 44 are arranged in a staggered manner, which is beneficial to dissipating heat from components 103 at different heights. A plurality of fans 9 are provided in the first inner cavity 101, and the fans 9 are also arranged in a staggered manner along the first direction. The air inlet side of the fan 9 faces the second fixing base 42, and the air outlet side of the fan 9 faces the first component 1031 or the second component 1032, so that the flowing air in the first inner cavity 101 can cover a larger range, improving the heat dissipation effect.

[0040] A first air outlet fan 5 is provided at the first air outlet 3. The air inlet side of the first air outlet fan 5 faces the radiator 1, and the air outlet side of the first air outlet fan 5 faces the first air outlet 3. The first air outlet fan 5 strengthens the internal air flow and transfers the high-temperature gas in the second inner cavity 102 to the atmosphere; a second air outlet fan 6 is provided at the second air outlet 31. The air inlet side of the second air outlet fan 6 faces the radiator 1, and the air outlet side of the second air outlet fan 6 faces the second air outlet 31, transferring the high-temperature gas in the second inner cavity 102 to the atmosphere. Components can be provided at the first air outlet 3 and / or the second air outlet 31 according to actual usage needs.

[0041] Further, components 103 can be provided in both the first inner cavity 101 and the second inner cavity 102. Most of the components are provided in the first inner cavity 101, and a small number of components are provided inside or outside the second inner cavity 102.

[0042] The heat sink 1 includes a base plate 13 and heat dissipation fins disposed on the base plate 13. At least part of the component 103 is close to or in contact with the base plate 13. The component 103 directly transfers heat to the base plate 13, and then the transferred heat further enters the second inner cavity 102 through the base plate 13 and the heat dissipation fins and is taken away, which can effectively reduce the heat of the component 103 in the first inner cavity 101, lower the temperature of the first inner cavity 101, and at the same time enhance the heat dissipation effect of the component 103. The heat dissipation fins include a first heat dissipation fin 11 and a second heat dissipation fin 12, which play a role in increasing the heat exchange effect of the heat exchanger. The first heat dissipation fin 10 is fixedly connected to the heat exchange rod 43, and the projections of the heat exchange rod 43 and the second heat dissipation fin 12 in the first direction at least partially overlap. Two adjacent second heat dissipation fins 12 form a heat dissipation air duct extending in the first direction, wherein the heat exchange rod 43 and the second heat dissipation fin 12 can be fixedly connected by welding or can have a certain distance. The second heat dissipation fin 12 can be set to different heights. More specifically, the height of the second heat dissipation fin 12 can partially or completely exceed the height where the heat exchange rod 43 is located. Here, the height refers to the height direction of the electrical equipment.

[0043] In this embodiment, after the external air flows into the second inner cavity 102, it is divided into two streams and flows out. The flow path of the air flow is shorter and the flow resistance is smaller, which reduces the influence of the heat in the upstream of the air flow on the heat in the downstream of the air flow and provides a heat dissipation and cooling effect. At the same time, since the air flow is divided into two streams, it is convenient to adjust the distribution of the designed components, etc., to meet the design of different heat dissipation requirements, making the structure of the device more reasonable, with higher reliability and heat dissipation efficiency.

[0044] Embodiment 2

[0045] Refer to Figure 10 and Figure 11 As shown, this embodiment is basically the same as Embodiment 1, except that the first heat dissipation channel 7 is only provided with the heat sink 1, and the second heat dissipation channel 8 is also only provided with the heat sink 2. The heat sink 2 and the heat exchanger 4 are arranged at intervals. The cold air first passes through the heat exchanger 4 and then flows to the heat sink, so that the heat passing through the heat exchanger 4 is divided into two streams and the heat received by a single stream of gas is less, effectively reducing the influence of the heat in the upstream of the air flow (the heat at the heat exchange rod) on the heat in the downstream (the heat at the heat sink) and improving the overall heat exchange performance.

[0046] Embodiment 3

[0047] Refer to Figure 12As shown, this embodiment is basically the same as Embodiment 1, except that there is a partition plate 1021 between the first heat dissipation channel 7 and the second heat dissipation channel 8. The first heat dissipation channel 7 is provided with a heat exchanger 4 and / or a radiator 1, and the second heat dissipation channel 8 is provided with a heat exchanger 4 and / or a radiator 1. The settings of the heat exchanger and the radiator can be adjusted according to the actual usage. Specifically, in this embodiment, the heat exchanger 4 is arranged in the first heat dissipation channel 7, and the heat exchanger 4 and the radiator 1 are arranged in the second heat dissipation channel 8. Due to the arrangement of the partition plate 1021, the air outlet fans may not be arranged at the first air outlet 3 and the second air outlet 31 at the same time. Specifically, in this embodiment, the first air outlet fan 5 is arranged at the second air outlet 31.

[0048] As shown in this specification and the claims, the terms "comprising" and "including" only indicate the inclusion of the steps and elements that have been clearly identified, and these steps and elements do not constitute an exclusive list. The method or device may also include other steps or elements. The term "and / or" used herein includes any combination of one or more of the related listed items.

[0049] It should be noted that unless otherwise specified, when a certain feature is referred to as "fixed" or "connected" to another feature, it can be directly fixed or connected to the other feature, or indirectly fixed or connected to the other feature. In addition, the up, down, left, right, etc. descriptions used in the present utility model are only relative to the mutual positional relationship of the various components of the present utility model in the drawings.

[0050] The above embodiments are only for explaining the technical concept and features of the present utility model, and are a preferred embodiment. The purpose is to enable those skilled in the art to understand the content of the present utility model and implement it accordingly, and it cannot be used to limit the protection scope of the present utility model. Any equivalent transformation or modification made according to the principle of the present utility model should be covered within the protection scope of the present utility model.

Claims

1. An electric power device, characterized in that: It includes a box body, components arranged in the inner cavity of the box body, and a heat dissipation device for dissipating heat from the components, characterized in that the box body has a first side wall and a second side wall arranged opposite to each other, and the box body also has an air inlet and an air outlet connected to the inner cavity, the air outlet includes a first air outlet and a second air outlet arranged opposite to each other, the first air outlet is arranged on the first side wall, and the second air outlet is arranged on the second side wall, a first heat dissipation channel is formed between the air inlet and the first air outlet, and the first heat dissipation channel is provided with the heat dissipation device; a second heat dissipation channel is formed between the air inlet and the second air outlet, and the second heat dissipation channel is provided with the heat dissipation device.

2. The electric power equipment according to claim 1, characterized in that: The heat dissipation device includes a radiator and a heat exchanger, the heat exchanger includes a first fixing seat, a second fixing seat and a heat exchange rod located between the first fixing seat and the second fixing seat, the first fixing seat and the second fixing seat are hollow structures, the number of the heat exchange rods is multiple and each of the heat exchange rods has a heat exchange channel; the inner cavity includes a first inner cavity and a second inner cavity, the heat exchanger and the radiator are located in the second inner cavity, the first inner cavity and the second inner cavity are separated by a partition, the partition is provided with an opening, the opening includes a first opening and a second opening, the first opening is connected to the first fixing seat, and the second opening is connected to the second fixing seat.

3. The electric power equipment according to claim 2, characterized in that: The heat exchanger is directly opposite to the air inlet, the first heat dissipation channel and the second heat dissipation channel are respectively located on both sides of the heat exchanger, the first heat dissipation channel is provided with a radiator and a heat exchanger, and the second heat dissipation channel is provided with a radiator and a heat exchanger; a first air outlet is provided with a first air outlet fan, the air inlet side of the first air outlet fan faces the radiator or the heat exchanger, and the air outlet side of the first air outlet fan faces the first air outlet; a second air outlet is provided with a second air outlet fan, the air inlet side of the second air outlet fan faces the radiator or the heat exchanger, and the air outlet side of the second air outlet fan faces the second air outlet.

4. The electric power equipment according to claim 3, characterized in that: The radiator comprises a first radiating fin and a second radiating fin, the first radiating fin is fixedly connected to the heat exchange rod, and the projections of the second radiating fin and the heat exchange rod in a first direction at least partially overlap.

5. The electric power equipment according to claim 2, characterized in that: The first heat dissipation channel is provided with the radiator, the second heat dissipation channel is provided with the radiator, and the radiator and the heat exchanger are arranged at intervals.

6. The electric power equipment according to claim 2, characterized in that: A partition plate is provided between the first heat dissipation channel and the second heat dissipation channel, the first heat dissipation channel is provided with a heat exchanger and / or a radiator, the second heat dissipation channel is provided with a heat exchanger and / or a radiator, and the first air outlet and / or the second air outlet is provided with a first air outlet fan.

7. The electric power equipment according to claim 4, 5 or 6, characterized in that: The first fixing seat of the heat exchanger and / or the second fixing seat of the heat exchanger have a plurality of interfaces, and the plurality of interfaces are inserted into the first inner cavity with the same or different insertion depths.

8. The electric power equipment according to claim 7, characterized in that: The components include a first component and a second component, wherein the bottom of the first component is higher than the top of the second component.

9. The electric power equipment according to claim 8, characterized in that: A fan is disposed in the first inner cavity and arranged in a staggered manner along a first direction, an air inlet side of the fan faces the second fixing seat, and an air outlet side of the fan faces the first component or the second component.

10. The electric power equipment according to claim 1, characterized in that: Components are provided at the first air outlet and / or the second air outlet.

Images