Power equipment and photovoltaic system

Abstract

The utility model discloses a power device and a photovoltaic system, the power device comprises a box body, a component and a heat dissipation device, the box body is provided with a first side plate and a second side plate, the first side plate is provided with an air inlet, the second side plate is provided with an air outlet, the heat dissipation device comprises a first heat dissipation device and a second heat dissipation device, and the first heat dissipation device and the second heat dissipation device are arranged in parallel. The second radiator comprises a first fixing seat, a second fixing seat and heat exchange channels, and second radiating fins are arranged between every two adjacent heat exchange channels; a partition plate is arranged in the inner cavity, openings are formed in the partition plate and the side wall of the box body or a plurality of openings are formed in the side wall to communicate the second radiator with the inner cavity, the openings comprise the first opening and the second opening, the first opening is communicated with the first fixing base, and the second opening is communicated with the second fixing base. And the second opening is communicated with the second fixed seat. According to the power equipment, the position of the heat dissipation device is adjusted according to the components without being influenced by the size of the box body, and the heat dissipation effect is improved.

Description

Technical Field

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

[0002] When a power device is working, the components inside it 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 relatively 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 requirements, a partition is provided inside the device. Currently, the heat dissipation devices are usually arranged on the partition. In this way, the heat dissipation effect on the components close to the partition is better, but the heat dissipation effect on the components far from the partition is poor, which affects the use effect; moreover, since the heat dissipation devices are arranged on the partition, the length of the heat dissipation devices will be limited by the length of the partition, that is, limited by the size of the box body. Summary of the Utility Model

[0004] In order to solve the above technical problems, the utility model provides a power device and a photovoltaic system, which can adjust the position of the heat dissipation device according to the components without being affected by the size of the box body, and improve the 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 plate and a second side plate arranged opposite to each other. The first side plate is provided with an air inlet communicating with the inner cavity, and the second side plate is provided with an air outlet communicating with the inner cavity. The heat dissipation device includes a first radiator and a second radiator. The first radiator is located in the box body, and part of the second radiator is located in the box body or the second radiator is located outside the box body to be close to the components. The second radiator includes a first fixing seat, a second fixing seat, and a heat exchange channel communicating with the first fixing seat and the second fixing seat. Second heat dissipation fins are arranged between adjacent two heat exchange channels; a partition is arranged in the inner cavity, and openings are respectively arranged on the partition and the side wall of the box body or a plurality of openings are arranged on the side wall to communicate the second radiator with the inner cavity. The openings include a first opening and a second opening. The first opening communicates with the first fixing seat, and the second opening communicates with the second fixing seat.

[0007] Preferably, the partition divides the box body into a first box body and a second box body; the first radiator includes a substrate and first heat dissipation fins, the substrate is disposed on the partition, and adjacent two of the first heat dissipation fins form a first heat dissipation channel, and adjacent two of the second heat dissipation fins form a second heat dissipation channel. The first heat dissipation channel and the second heat dissipation channel are arranged opposite to each other, or the second heat dissipation channel is located below the first heat dissipation channel, or the first heat dissipation channel and the second heat dissipation channel are perpendicular to each other.

[0008] In one embodiment, the first fixing seat and the second fixing seat have a hollow structure, and both the first fixing seat and the second fixing seat communicate with the heat exchange channel; a first port communicating with the inner cavity of the first box body is provided on the first fixing seat, a second port communicating with the inner cavity of the first box body is provided on the second fixing seat, the first opening communicates with the first port, and the second opening communicates with the second port; a first fan is provided at the first port and / or the second port, and the air outlet side of the first fan faces the inner cavity of the first box body; the power device further includes a second fan, the air inlet side of the second fan faces the air inlet, and the air outlet side of the second fan faces the air outlet.

[0009] In one embodiment, the first fixing seat and the second fixing seat have a hollow structure, and both the first fixing seat and the second fixing seat communicate with the heat exchange channel; a first port communicating with the inner cavity of the first box body is provided on the first fixing seat, a second port communicating with the inner cavity of the first box body is provided on the second fixing seat, a first fan is provided at the first port and / or the second port, the air outlet side of the first fan faces the inner cavity of the first box body, and the number of the first ports and / or the second ports is multiple.

[0010] 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.

[0011] In one embodiment, the second heat dissipation channel is perpendicular to the first heat dissipation channel; a second air outlet communicating with the first fixing seat and the second fixing seat is formed on the side wall of the second box body, and the second air outlet is located above the first opening and the second opening.

[0012] In one embodiment, the second heat dissipation channel is located below the first heat dissipation channel and in a first direction; the second radiator corresponds to the first box body, a first fan is provided on the side wall of the first box body, the air inlet side of the first fan faces the first fixing seat and the second fixing seat, and the air outlet side of the first fan faces the inner cavity of the first box body.

[0013] In one embodiment, the second heat dissipation channel is located below the first heat dissipation channel and in the second direction; the second radiator corresponds to the first box body, a first fan is provided on the side wall of the first box body, the air inlet side of the first fan faces the first fixing seat and the second fixing seat, and the air outlet side of the first fan faces the inner cavity of the first box body.

[0014] In one embodiment, part of the second radiator is located outside the box body, the second box body has a plurality of side walls, and the length of the heat exchange channel is greater than or equal to the distance between two opposite side walls; the power device further includes a second fan, the air inlet side of the second fan faces the air inlet, and the air outlet side of the second fan faces the air outlet.

[0015] The present invention also adopts the following technical solutions:

[0016] A photovoltaic system includes the above-mentioned power device.

[0017] The present invention adopts the above solutions and has the following advantages compared with the prior art:

[0018] For the power device of the present invention, the first radiator dissipates heat from the inner cavity, the second radiator is arranged outside the box body or part of the second radiator is arranged in the box body, and the second radiator is communicated with the inner cavity to dissipate heat from the components in the inner cavity. Among them, the area of the second heat dissipation fins in the inner cavity is relatively large or the distance between the second radiator and the power device is relatively close, so the heat dissipation effect is good; the outside cold air enters from the air inlet on the first side plate, flows through the first radiator and / or the second radiator, and exits from the air outlet on the second side plate to take away the heat on the heat dissipation device. Description of the Drawings

[0019] In order to more clearly illustrate the technical solutions of the present invention, the drawings required for the description of the embodiments will be briefly introduced below. Obviously, the drawings in the following description are only some embodiments of the present invention. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0020] Figure 1 It is a perspective view of the power device according to Embodiment 1 of the present invention;

[0021] Figure 2 It is a schematic structural view of the power device according to Embodiment 1 of the present invention;

[0022] Figure 3 It is another schematic structural view of the power device according to Embodiment 1 of the present invention;

[0023] Figure 4Schematic diagram of the second radiator according to Embodiment 1 of the present utility model;

[0024] Figure 5 Schematic diagram of the second radiator according to Embodiment 2 of the present utility model;

[0025] Figure 6 Stereogram of the power device according to Embodiment 3 of the present utility model;

[0026] Figure 7 Schematic diagram of the opening of the power device according to Embodiment 3 of the present utility model;

[0027] Figure 8 Top view of the power device according to Embodiment 3 of the present utility model;

[0028] Figure 9 Stereogram of the power device according to Embodiment 4 of the present utility model;

[0029] Figure 10 Front view of the power device according to Embodiment 4 of the present utility model;

[0030] Figure 11 Stereogram of the power device according to Embodiment 5 of the present utility model;

[0031] Figure 12 Stereogram of the power device according to Embodiment 6 of the present utility model;

[0032] Figure 13 Top view of the power device according to Embodiment 6 of the present utility model;

[0033] Figure 14 Stereogram of the power device according to Embodiment 7 of the present utility model;

[0034] Figure 15 Top view of the power device according to Embodiment 7 of the present utility model;

[0035] Figure 16 Front view of the second radiator according to Embodiment 7 of the present utility model.

[0036] Wherein,

[0037] 1. Box body; 11. First box body; 12. Second box body; 121. First side plate; 122. Second side plate; 13. Components; 14. Partition board; 15. Side wall; 151. First opening; 152. Second opening;

[0038] 2. First radiator; 21. Substrate; 22. First heat dissipation fins; 221. First heat dissipation channel;

[0039] 3. Second radiator; 31. First fixing seat; 311. First port; 32. Second fixing seat; 321. Second port; 33. Heat exchange channel; 34. Second heat dissipation fin; 341. Second heat dissipation channel;

[0040] 4. First fan; 5. Second air outlet; 6. Second fan. Specific embodiments

[0041] The following elaborates on the preferred embodiments of the present invention in conjunction with the accompanying drawings, so that the advantages and features of the present invention 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 invention, but does not constitute a limitation to the present invention. In addition, the technical features involved in the various embodiments of the present invention described below can be combined with each other as long as they do not conflict with each other.

[0042] Embodiment 1

[0043] Referring to Figures 1 to 4 As shown, this embodiment provides a photovoltaic system, including a power device, which can be a photovoltaic inverter, an integrated energy storage and conversion device, a busbar box, etc. The power device includes a box body 1, components 13 arranged in the inner cavity of the box body 1, and a heat dissipation device for dissipating heat from the components 103. Specifically, in this embodiment, most of the components are arranged in the first box body 11, and components can also be arranged in the second box body 12 according to needs. A partition 14 is provided in the box body 1, and the partition 14 divides the box body 1 into a first box body 11 and a second box body 12. The components 13 are arranged in the inner cavity of the first box body 11. The second box body 12 has a first side plate 121 and a second side plate 122 arranged opposite to each other. The first side plate 121 is provided with an air inlet communicating with the inner cavity, and the second side plate 122 is provided with an air outlet communicating with the inner cavity. The air inlet and the air outlet in this embodiment are multiple small holes (not shown in the figure) opened on the first side plate 121 and the second side plate 122 respectively.

[0044] Further, the heat dissipation device includes a first radiator 2 and a second radiator 3. The first radiator 2 is located in the second box body 12, and the second radiator 3 is located outside the box body 1. Specifically, the first radiator 2 includes a substrate 21 and first heat dissipation fins 22. The substrate 21 is arranged on the partition plate 14. The partition plate 14 may be provided with a plurality of mounting holes for mounting components on the substrate 21. The components are in close contact with the substrate 21, and the heat dissipation effect is better. The second radiator 3 includes a first fixing seat 31 and a second fixing seat 32. A plurality of heat exchange channels 33 are provided between the first fixing seat 31 and the second fixing seat 32. Second heat dissipation fins 34 are provided between adjacent two heat exchange channels 33. The second heat dissipation fins 34 are welded on the heat exchange channels 33 to enhance the heat dissipation effect. A plurality of openings are provided on the side wall of the box body 1 to communicate the second radiator 3 with the inner cavity. The openings include a first opening 151 and a second opening 152. The first opening 151 is communicated with the first fixing seat 31, and the second opening 152 is communicated with the second fixing seat 32.

[0045] Furthermore, adjacent two first heat dissipation fins 22 form a first heat dissipation channel 221, and adjacent two second heat dissipation fins 34 form a second heat dissipation channel 341. The first heat dissipation channel 221 and the second heat dissipation channel 341 are arranged oppositely. The first fixing seat 31 and the second fixing seat 32 have a hollow structure, and both the first fixing seat 31 and the second fixing seat 32 are communicated with the heat exchange channels 33. A first port 311 communicated with the inner cavity of the first box body 11 is provided on the first fixing seat 31, and a second port 321 communicated with the inner cavity of the first box body 11 is provided on the second fixing seat 32. The first opening 151 is communicated with the first port 311, and the second opening 152 is communicated with the second port 321. A first fan 4 is provided at the first port 311 and / or the second port 321. The air outlet side of the first fan faces the inner cavity of the first box body 11, and the air inlet side of the first fan 4 faces the hollow structure of the first fixing seat and / or the second fixing seat. The first fan 4 introduces the outside cold air into the first box body 11 to dissipate heat from the components 13 in the first box body 11. Specifically, the cold air sequentially passes through the first port 311 and the first opening 151, the second port 321 and the second opening 152. The power device further includes a second fan 6. The air inlet side of the second fan 6 faces the air inlet, and the air outlet side of the second fan 6 faces the air outlet.

[0046] When dissipating heat from the components 13, first, the second fan 6 blows the outside cold air into the first radiator 2 in the second box body 12 to take away the heat on the first radiator 2. Then, the air enters the second radiator 3 from the air outlet to take away the heat on the second radiator. The first fan 4 directly blows the outside cold air to the components in the first box body 11. The components to be dissipated are relatively close to the second radiator 3, which can play an effective heat dissipation role. Refer to Figure 3As shown, in other embodiments, the second fan 6 can also be arranged between the first radiator 2 and the second radiator 3. At this time, the air inlet side of the second fan 6 faces the heat exchange channel 33 of the second radiator 3, and the air outlet side faces the first heat dissipation fins 22. The outside cold air first passes through the heat exchange channel 33 and the second heat dissipation fins 34, then enters the second box body 12 through the air outlet, takes away the heat on the first heat dissipation fins 22, and flows out through the air inlet.

[0047] Embodiment 2

[0048] Refer to Figure 5 As shown, this embodiment is basically the same as Embodiment 1, except that the number of the first ports 311 and / or the second ports 321 can be multiple. Specifically, in this embodiment, the number of the first ports 311 is two, and the number of the second ports 321 is one. The components close to the first ports 311 include the first component and the second component, and the bottom of the first component is higher than the top of the second component. The two first ports 311 are arranged vertically, which is also to better achieve the heat dissipation of the components.

[0049] Embodiment 3

[0050] Refer to Figures 6 to 8 As shown, the first heat dissipation channel 221 and the second heat dissipation channel 341 of this embodiment are perpendicular to each other. A second air outlet 5 communicating with the first fixing seat 31 and the second fixing seat 32 is formed on the side wall of the second box body 12. The second air outlet 5 is located above the first opening 151 and the second opening 152. Under the action of the second fan 6, the outside cold air enters the second box body 12 from the air inlet and is divided into two paths to flow out. Specifically, refer to Figure 8 As shown, in which part of the air flow flows out through the air outlet, and the other part of the air flow flows out through the second air outlet 5, improving the heat dissipation efficiency. In other embodiments, a third radiator can also be provided. The third radiator is arranged outside the box body, and a third air outlet is formed on the side wall close to the third radiator. The first radiator is arranged between the second radiator and the third radiator. When the outside cold air is blown into the inner cavity of the second box body from the air inlet, part of the air flow flows out through the air outlet, part of the air flow flows out through the second air outlet, and part of the air flow flows out through the third air outlet, improving the heat dissipation efficiency.

[0051] Embodiment 4

[0052] Refer to Figure 9 and Figure 10As shown, the second heat dissipation channel 341 is located below the first heat dissipation channel 221. The second heat dissipation channel 341 is in the first direction, and the first direction is parallel to the direction where the first heat dissipation channel is located. The second radiator 3 corresponds to the first box body 11. A first fan 4 is provided on the side wall of the first box body 11. The air inlet side of the first fan 4 faces the first fixing seat 31 and the second fixing seat 32, and the air outlet side of the first fan 4 faces the inner cavity of the first box body 11.

[0053] Embodiment 5

[0054] Referring to Figure 11 As shown, this embodiment is basically the same as Embodiment 4, except that the second heat dissipation channel 341 is located below the first heat dissipation channel 221. The second heat dissipation channel 341 is in the second direction, and the second direction is perpendicular to the direction where the first heat dissipation channel 221 is located.

[0055] Embodiment 6

[0056] Referring to Figure 12 and Figure 13 As shown, part of the second radiator 3 is arranged in the second box body 12. Specifically, the heat exchange channel 33 and the second heat dissipation fins 34 are arranged in the second box body 12, and the first fixing seat 31 and the second fixing seat 32 located on both sides are arranged outside the box body 1, which can make full use of the internal space of the box body 1, make more effective use of the second radiator 3, and improve the heat dissipation efficiency. The outside cold air enters the second box body 12 from the air inlet through the second fan 6, blows to the second radiator 3 and the first radiator 2 in sequence, and finally flows out from the air outlet.

[0057] Embodiment 7

[0058] Referring to Figures 14 to 16 As shown, this embodiment is basically the same as Embodiment 6, except that the first opening is arranged on the partition 14, the second opening is arranged on the side wall, the first opening is communicated with the first fixing seat 31, and the second opening is communicated with the second fixing seat 32. The first fixing seat 31 is arranged on the partition, and the second fixing seat 32 is arranged outside the box body. Compared with the case where both fixing seats are arranged on the partition, the heat dissipation effect of the second radiator is utilized more effectively, and the heat dissipation efficiency is improved.

[0059] As shown in this specification and the claims, the terms "comprising" and "including" only indicate the inclusion of the clearly identified steps and elements, 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.

[0060] 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 descriptions such as "upper", "lower", "left", and "right" 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.

[0061] The above embodiments are only for illustrating 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. A power device, comprising 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 plate and a second side plate arranged opposite to each other. The first side plate is provided with an air inlet communicating with the inner cavity, and the second side plate is provided with an air outlet communicating with the inner cavity. It is characterized in that, The heat dissipation device includes a first radiator and a second radiator. The first radiator is located in the box body, and part of the second radiator is located in the box body or the second radiator is located outside the box body close to the components. The second radiator includes a first fixing seat, a second fixing seat, and a heat exchange channel communicating with the first fixing seat and the second fixing seat. Second heat dissipation fins are provided between adjacent two of the heat exchange channels. A partition is provided in the inner cavity. Openings are respectively provided on the partition and the side wall of the box body, or a plurality of openings are provided on the side wall to communicate the second radiator with the inner cavity. The openings include a first opening and a second opening. The first opening communicates with the first fixing seat, and the second opening communicates with the second fixing seat.

2. The power device according to claim 1, characterized in that, The partition divides the box body into a first box body and a second box body. The first radiator includes a substrate and first heat dissipation fins. The substrate is provided on the partition. Adjacent two of the first heat dissipation fins form a first heat dissipation channel, and adjacent two of the second heat dissipation fins form a second heat dissipation channel. The first heat dissipation channel and the second heat dissipation channel are arranged oppositely, or the second heat dissipation channel is located below the first heat dissipation channel, or the first heat dissipation channel and the second heat dissipation channel are perpendicular to each other.

3. The power device according to claim 2, characterized in that, The first fixing seat and the second fixing seat have a hollow structure, and both the first fixing seat and the second fixing seat communicate with the heat exchange channel. A first port communicating with the inner cavity of the first box body is provided on the first fixing seat, and a second port communicating with the inner cavity of the first box body is provided on the second fixing seat. The first opening communicates with the first port, and the second opening communicates with the second port. A first fan is provided at the first port and / or the second port, and the air outlet side of the first fan faces the inner cavity of the first box body. The power device further includes a second fan. The air inlet side of the second fan faces the air inlet, and the air outlet side of the second fan faces the air outlet.

4. The power device according to claim 2, characterized in that, The first fixing seat and the second fixing seat have a hollow structure, and both the first fixing seat and the second fixing seat communicate with the heat exchange channel. A first port communicating with the inner cavity of the first box body is provided on the first fixing seat, and a second port communicating with the inner cavity of the first box body is provided on the second fixing seat. A first fan is provided at the first port and / or the second port, and the air outlet side of the first fan faces the inner cavity of the first box body. The number of the first port and / or the second port is multiple.

5. The power device according to claim 4, characterized in that, 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.

6. The power device according to claim 3, characterized in that The second heat dissipation channel is perpendicular to the first heat dissipation channel. A second air outlet communicating with the first fixing seat and the second fixing seat is provided on the side wall of the second box body, and the second air outlet is located above the first opening and the second opening.

7. The power device according to claim 3, characterized in that, The second heat dissipation channel is located below the first heat dissipation channel and is in the first direction; the second radiator corresponds to the first box body, a first fan is provided on the side wall of the first box body, the air inlet side of the first fan faces the first fixing seat and the second fixing seat, and the air outlet side of the first fan faces the inner cavity of the first box body.

8. The power device according to claim 3, characterized in that, The second heat dissipation channel is located below the first heat dissipation channel and is in the second direction; the second radiator corresponds to the first box body, a first fan is provided on the side wall of the first box body, the air inlet side of the first fan faces the first fixing seat and the second fixing seat, and the air outlet side of the first fan faces the inner cavity of the first box body.

9. The power device according to claim 2, characterized in that, Part of the second radiator is located outside the box body, the second box body has a plurality of side walls, the length of the heat exchange channel is greater than or equal to the distance between two opposite side walls; the power device further includes a second fan, the air inlet side of the second fan faces the air inlet, and the air outlet side of the second fan faces the air outlet.

10. A photovoltaic system, characterized in that, Comprising the power device according to any one of claims 1 to 9.

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