Heat dissipation structure for photovoltaic inverter and photovoltaic inverter

Abstract

The utility model belongs to the technical field of photovoltaic equipment, and discloses a heat dissipation structure for a photovoltaic inverter and the photovoltaic inverter. The heat dissipation structure for the photovoltaic inverter comprises a shell, a mounting box and a fan assembly. A first air inlet area is arranged on the bottom wall of the shell, a first air outlet is formed in the side wall of the shell, and a radiator is installed in the shell. The mounting box is mounted on one side wall of the shell, an opening communicated with the first air inlet area is formed in one side of the mounting box, a second air outlet is formed in the side wall of the mounting box, and a heat exchanger is mounted in the mounting box; one part of the fan assemblies are located below the radiator, the other part of the fan assemblies enter the mounting box through the opening and are located below the heat exchanger, and the fan assemblies are used for supplying air to the radiator and the heat exchanger at the same time. According to the heat dissipation structure for the photovoltaic inverter, an air duct structure and parts are simplified.

Description

TECHNICAL FIELD

[0001] The utility model relates to photovoltaic equipment technical field especially relates to a photovoltaic inverter heat dissipation structure and photovoltaic inverter. BACKGROUND

[0002] With the continuous promotion of photovoltaic inverter power density, the heat generated by internal power devices also increases significantly, and the heat dissipation performance has become a key factor affecting the efficiency, service life and safety of the equipment. The common heat dissipation scheme mainly adopts the way of heat sink cooperating with forced air cooling, that is, the surface of the heat sink is directly blown by the fan to strengthen the convective heat transfer and discharge the heat outside the equipment in time.

[0003] To further improve the heat dissipation capacity, some designs introduce independent heat exchangers, which utilize secondary heat exchange with external air to reduce the temperature of the cooling air entering the equipment interior. In such schemes, a dedicated fan is usually needed to be separately arranged on the frame to forcibly blow the heat exchanger to strengthen its heat exchange with the outside, which not only increases the number of system components, but also increases the difficulty of fan control and fault maintenance. Moreover, the heat sink air duct and the heat exchanger air duct are often independent or have low coupling degree, resulting in complex air duct structure, large space occupation, and easy airflow interference and high wind pressure loss.

[0004] Therefore, it is urgent to provide a photovoltaic inverter heat dissipation structure and photovoltaic inverter to solve the above technical problems. SUMMARY

[0005] According to one aspect of the utility model, the utility model provides a photovoltaic inverter heat dissipation structure which simplifies the air duct structure and components, improves the compactness of the photovoltaic inverter structure, and has low risk of airflow interference and improved heat dissipation performance.

[0006] To achieve this purpose, the utility model adopts the following technical solutions:

[0007] The photovoltaic inverter heat dissipation structure comprises:

[0008] A shell is provided with a first air inlet area on the bottom wall, a first air outlet is arranged on the side wall of the shell, and a heat sink is installed in the shell;

[0009] An installation box is installed on one side wall of the shell, one side of the installation box is provided with an opening communicating with the first air inlet area, a second air outlet is arranged on the side wall of the installation box, and a heat exchanger is installed in the installation box;

[0010] A fan assembly is installed on the first air inlet area, a part of the fan assembly is located below the heat sink, and another part of the fan assembly enters the mounting box through the opening and is located below the heat exchanger, and the fan assembly is used for simultaneously supplying air to the heat sink and the heat exchanger.

[0011] Optionally, a first limiting piece is arranged on one side of the opening on the bottom wall of the mounting box, and the first limiting piece abuts against the end of the fan assembly in the length direction.

[0012] Optionally, the fan assembly comprises:

[0013] A fan box is installed on the first air inlet area and enters the mounting box through the opening at one end, and a plurality of second air inlet areas are arranged on the bottom wall of the fan box.

[0014] A plurality of fans are arranged one by one corresponding to the second air inlet areas, one fan is arranged on each second air inlet area, and at least a part of the fan is located in the mounting box.

[0015] Optionally, the fan box is slidably arranged on the first air inlet area, an avoiding opening is arranged on the side wall of the shell opposite to the mounting box, the avoiding opening is arranged opposite to the opening, a pulling piece is arranged in the avoiding opening, one end of the pulling piece located in the shell is connected to the end of the fan box, and the other end of the pulling piece located outside the shell is detachably connected to the outer side wall of the shell.

[0016] Optionally, first supports are arranged on the bottom wall of the shell on opposite sides of the first air inlet area, one end of the first support abuts against the mounting box, and the other end of the first support abuts against the side wall of the shell, a fin is arranged on the end of the first support close to the side wall of the shell, the heat sink is arranged on the two first supports, and one end of the heat sink abuts against the mounting box, and the other end of the heat sink abuts against the fin.

[0017] Optionally, the first air inlet area is located in the middle of the shell and extends in the length direction of the shell, a first chamber and a second chamber are formed on both sides of the first air inlet area in the width direction of the shell, the first air outlet is arranged on at least one side wall of the shell opposite to the first chamber and at least one side wall of the shell opposite to the second chamber, a plurality of inverter inductors are arranged in the first chamber, and a plurality of boost inductors are arranged in the second chamber.

[0018] Optionally, the first chamber and the second chamber are each provided with a mounting structure for fixing the plurality of inverter inductors or the plurality of boost inductors, the mounting structure comprising a second support and a plurality of second limiters, the second support being mounted to a bottom wall of the shell, and the plurality of second limiters being arranged on the second support, at least one of the inverter inductors or the boost inductors being provided with the second limiters at opposite corners.

[0019] The second limiter comprises a connecting plate, a stop plate and an inclined plate, the connecting plate being connected to the second support, adjacent sides of the connecting plate each being provided with the stop plate, the two stop plates being respectively abutted against adjacent side walls of the inverter inductor or the boost inductor, and the top of at least one of the stop plates being provided with the inclined plate for guiding the installation of the inverter inductor or the boost inductor.

[0020] Optionally, the second support comprises a convex portion and a flange arranged on opposite sides of the convex portion, the convex portion being used for supporting the inverter inductor or the boost inductor.

[0021] The side wall, at which the convex portion is connected to the flange, is provided with a plurality of clamping grooves, the second limiters are arranged in one-to-one correspondence with the clamping grooves, and the connecting plate is connected to the flange, one of the stop plates of the second limiter being provided with a clamping protrusion, and the clamping protrusion is clamped with the corresponding clamping groove.

[0022] Optionally, the heat dissipation structure for the photovoltaic inverter further comprises a main frame, the main frame being mounted at a mounting opening at the top of the shell, and the top of the shell is provided with a guide plate on one side of the mounting opening, and the guide plate is abutted against a side wall of the main frame.

[0023] According to another aspect of the present application, the present application further provides a photovoltaic inverter, comprising a main machine and the heat dissipation structure for the photovoltaic inverter according to any one of the technical solutions.

[0024] The present application has the following beneficial effects:

[0025] The utility model provides a photovoltaic inverter heat dissipation structure, including casing, installation box and fan component. The photovoltaic inverter heat dissipation structure works, and fan component passes the first air inlet area on the casing bottom wall and inhales the outside cold air into the casing, and a part of outside cold air will blow to the radiator above fan component, and is discharged from the first air outlet on the lateral wall of casing to realize the heat dissipation to radiator, and another part of outside cold air will blow to the heat exchanger above fan component, and is discharged from the second air outlet on the lateral wall of installation box to realize the heat dissipation to heat exchanger. The scheme that this radiator and heat exchanger share the first air inlet area and fan component compared with the scheme that the fan is separately arranged for heat exchanger in prior art, on the one hand, the air duct structure is simplified, makes the airflow path more smooth, concentrates, effectively reduces total wind pressure loss, can obtain greater effective air volume under the same power consumption, improves the heat dissipation performance, or can adopt lower power consumption to satisfy the same heat dissipation demand, and further reduces energy consumption and noise, on the other hand, spares the fan and corresponding control circuit that are separately arranged for heat exchanger, reduces the number of parts, and the occupied space is smaller, and further improves the compactness of the structure of photovoltaic inverter.

[0026] The utility model also provides a photovoltaic inverter, including the heat dissipation structure for photovoltaic inverter of above. The photovoltaic inverter because adopted the heat dissipation structure for photovoltaic inverter of above, the volume is smaller, and the heat dissipation performance is better, and energy consumption is lower. ACCURACY

[0027] In order to more clearly illustrate the technical scheme in the embodiment of the utility model, the following will be to the embodiment of the utility model needed to use the drawing briefly introduced, obviously, the following description in the drawing is only some embodiments of the utility model, for those skilled in the art, under the premise of not paying the creative labor, can also obtain other drawings according to the content of the embodiment of the utility model and these drawings.

[0028] Figure 1 It is the assembly drawing of casing and installation box provided by the embodiment of the utility model;

[0029] Figure 2 It is the assembly drawing of heat dissipation structure for photovoltaic inverter and main frame under one visual angle provided by the embodiment of the utility model;

[0030] Figure 3 It is the assembly drawing of casing, installation box and fan component provided by the embodiment of the utility model;

[0031] Figure 4 It is the structure schematic diagram of heat dissipation structure for photovoltaic inverter provided by the embodiment of the utility model;

[0032] Figure 5 It is the structure schematic diagram of installation box provided by the embodiment of the utility model;

[0033] Figure 6 is Figure 3 schematic view of the fan after being hidden;

[0034] Figure 7 is a structural schematic view of a fan assembly provided by an embodiment of the present application;

[0035] Figure 8 is a schematic view of a mounting structure provided by an embodiment of the present application;

[0036] Figure 9 is a partial enlarged view of an assembly drawing of the inverter inductor and the mounting structure provided by an embodiment of the present application;

[0037] Figure 10 is Figure 8 enlarged view at A;

[0038] Figure 11 is an exploded schematic view of a heat dissipation structure and a mainframe frame of a photovoltaic inverter provided by an embodiment of the present application;

[0039] Figure 12 is an assembly drawing of the heat dissipation structure and the mainframe frame of the photovoltaic inverter from another perspective provided by an embodiment of the present application.

[0040] in the figure:

[0041] 10, radiator; 20, heat exchanger; 201, inlet; 202, outlet; 30, inverter inductor; 40, boost inductor;

[0042] 100, shell; 101, first chamber; 102, second chamber; 110, first air inlet area; 120, first air outlet; 130, avoiding port; 140, guide plate;

[0043] 200, mounting box; 210, opening; 220, second air outlet; 230, first limiting piece; 231, bending section;

[0044] 300, fan assembly; 310, fan box; 311, second air inlet area; 320, fan; 330, pulling piece; 331, pulling head; 332, connecting frame; 333, handle; 334, connecting edge;

[0045] 400, first support; 410, fin; 420, stop block;

[0046] 500, mounting structure; 510, second support; 511, convex part; 5111, clamping groove; 512, flange; 520, second limiting piece; 521, connecting plate; 522, stop plate; 5221, clamping convex; 523, inclined plate; 530, fastener;

[0047] 600, Main unit frame; 610, Through hole. Detailed Implementation

[0048] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present invention and not intended to limit it. Furthermore, it should be noted that, for ease of description, the accompanying drawings show only the parts relevant to the present invention, not the entire structure.

[0049] In the description of this utility model, unless otherwise explicitly specified and limited, the terms "connected," "linked," and "fixed" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0050] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0051] In the description of this embodiment, the terms "upper," "lower," "left," and "right," etc., refer to the orientation or positional relationship shown in the accompanying drawings. They are used only for ease of description and simplification of operation, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. In addition, the terms "first" and "second" are only used for distinction in description and have no special meaning.

[0052] This embodiment provides a heat dissipation structure for a photovoltaic inverter, which simplifies the air duct structure and components, improves the structural compactness of the photovoltaic inverter, and has a low risk of airflow interference, thereby improving heat dissipation performance.

[0053] Specifically, such as Figures 1-4 As shown, the heat dissipation structure for the photovoltaic inverter includes a housing 100, a mounting box 200, and a fan assembly 300.

[0054] The bottom wall of the shell 100 is provided with a first air inlet area 110, and the side wall of the shell 100 is provided with a first air outlet 120. The heat sink 10 is installed in the shell 100. The mounting box 200 is installed on one side wall of the shell 100, and one side of the mounting box 200 is provided with an opening 210 in communication with the first air inlet area 110, and the side wall of the mounting box 200 is provided with a second air outlet 220. The heat exchanger 20 is installed in the mounting box 200. The fan assembly 300 is installed on the first air inlet area 110, and part of the fan assembly 300 is located below the heat sink 10, and the other part of the fan assembly 300 enters the mounting box 200 through the opening 210 and is located below the heat exchanger 20, and the fan assembly 300 is used to send air to the heat sink 10 and the heat exchanger 20 at the same time.

[0055] When the photovoltaic inverter heat dissipation structure works, the fan assembly 300 sucks the external cold air into the shell 100 through the first air inlet area 110 on the bottom wall of the shell 100. Part of the external cold air will blow to the heat sink 10 above the fan assembly 300 and be discharged from the first air outlet 120 on the side wall of the shell 100 to achieve heat dissipation of the heat sink 10. Another part of the external cold air will blow to the heat exchanger 20 above the fan assembly 300 and be discharged from the second air outlet 220 on the side wall of the mounting box 200 to achieve heat dissipation of the heat exchanger 20.

[0056] The photovoltaic inverter heat dissipation structure provided by the embodiment adopts the scheme that the heat sink 10 and the heat exchanger 20 share the first air inlet area 110 and the fan assembly 300. Compared with the scheme that the fan 320 is separately arranged for the heat exchanger 20 in the prior art, on the one hand, the air duct structure is simplified, the airflow path is smoother and more concentrated, the total wind pressure loss is effectively reduced, a larger effective air volume can be obtained under the same power consumption, the heat dissipation performance is improved, or lower power consumption can be used to meet the same heat dissipation demand, thereby reducing energy consumption and noise; on the other hand, the fan 320 and the corresponding control circuit separately arranged for the heat exchanger 20 are saved, the number of parts is reduced, the occupied space is smaller, and the compactness of the photovoltaic inverter is improved.

[0057] Optionally, in a possible embodiment, part of the first air inlet area 110 extends into the mounting box 200 through the opening 210.

[0058] Optionally, in a possible embodiment, a plurality of first air inlets are arranged on the bottom wall of the shell 100, and the plurality of first air inlets form the first air inlet area 110 at the bottom of the shell 100.

[0059] Optionally, the shape of the first air inlet can be circular, square, etc., which can be set according to actual needs, and the present application does not make specific limitations.

[0060] Optionally, in a possible embodiment, the shell 100 is provided with a notch on the side wall close to the first air inlet area 110, and the mounting box 200 is mounted at the notch.

[0061] Further, continuing to refer to Figure 1 In the embodiment, a part of the mounting box 200 is located in the shell 100, and another part is located outside the shell 100. The side wall of the mounting box 200 located outside the shell 100 is provided with a second air outlet 220.

[0062] Optionally, the mounting box 200 can be connected with the shell 100 by bolt connection, can be connected with the shell 100 by welding, or can be connected with the shell 100 by other ways, which is set according to actual needs, and the application does not make specific limitation.

[0063] Optionally, in the embodiment, a part of the opening 210 is located on the bottom wall of the mounting box 200, and another part is located on the side wall of the mounting box 200 close to the first air inlet area 110, that is, the opening 210 is in L-shaped structure.

[0064] Optionally, the first air outlet 120 can be provided with multiple first air outlets 120 to improve the heat dissipation efficiency. The multiple first air outlets 120 can be arranged in an array on the side wall of the shell 100, or can be arranged in a row on the side wall of the shell 100, etc., which is set according to actual needs, and the application does not make specific limitation.

[0065] Optionally, the second air outlet 220 can be provided with multiple second air outlets 220 to improve the heat dissipation efficiency. The multiple second air outlets 220 can be arranged in an array on the side wall of the mounting box 200, or can be arranged in a row on the side wall of the mounting box 200, etc., which is set according to actual needs, and the application does not make specific limitation.

[0066] Optionally, the shape of the first air outlet 120 can be circular, square, etc., which is set according to actual needs, and the application does not make specific limitation.

[0067] Optionally, the shape of the second air outlet 220 can be circular, square, etc., which is set according to actual needs, and the application does not make specific limitation.

[0068] Further, as shown in Figure 1 , Figure 3 and Figure 5 , the bottom wall of the mounting box 200 is provided with a first limiting piece 230 on one side of the opening 210, and the first limiting piece 230 abuts against the end of the fan assembly 300 in the length direction. By setting the first limiting piece 230, the installation of the fan assembly 300 can be positioned, and the installation difficulty of the fan assembly 300 is reduced.

[0069] Optionally, continuing to refer to Figure 5The first limiting piece 230 is in a plate shape, and a top portion of the first limiting piece 230 is bent to form a bent segment 231 in a direction close to the fan assembly 300, and the bent segment 231 abuts against a top portion of the fan assembly 300. In this way, the first limiting piece 230 can limit the fan assembly 300 in the height direction, thereby improving the stability of the installation of the fan assembly 300 and reducing the vibration noise of the fan assembly 300 during operation.

[0070] Optionally, in a possible embodiment, the length direction of the fan assembly 300 is the length direction of the shell 100.

[0071] Further, as shown in Figure 1 , Figure 3 , Figure 6 and Figure 7 , the fan assembly 300 includes a fan box 310 and a plurality of fans 320. The fan box 310 is installed on the first air inlet area 110 and enters the installation box 200 through the opening 210 at one end, and the bottom wall of the fan box 310 is provided with a plurality of second air inlet areas 311. The fans 320 are arranged one by one corresponding to the second air inlet areas 311, one fan 320 is arranged on each second air inlet area 311, and at least part of one of the fans 320 is located in the installation box 200. The fan assembly 300 integrates the plurality of fans 320 through the fan box 310, which facilitates installation and disassembly. Each fan 320 sucks in external cold air through the first air inlet area 110 and the second air inlet area 311, and has high working reliability. The working of the plurality of fans 320 is independent of each other, which optimizes the air flow path and improves the heat dissipation effect to a certain extent.

[0072] Optionally, in a possible embodiment, the bottom wall of the fan box 310 is provided with a plurality of second air inlets, and the plurality of second air inlets form a plurality of second air inlet areas 311 at the bottom of the fan box 310.

[0073] Optionally, the shape of the second air inlet can be circular, square, etc., which can be set according to actual needs, and the application does not make specific limitations.

[0074] Optionally, in the embodiment, the first air inlet area 110 is in a strip shape and extends along the length direction of the shell 100, and the fan box 310 is also in a strip shape, the fan box 310 just covers the first air inlet area 110, and a row of fans 320 is arranged in the fan box 310, wherein a part of the fans 320 located at the end of the fan box 310 enters the mounting box 200 through the opening 210. In this way, the number of the fans 320 is less, and the heat dissipation performance is better. Of course, in other embodiments, a plurality of rows of fans 320 can be arranged, and a part of each fan 320 located at the end of the fan box 310 enters the mounting box 200 through the opening 210. The arrangement can be set according to actual needs, and the present application does not make specific limitation.

[0075] It is worth noting that in the above-mentioned scheme in which the first limiting piece 230 is arranged in the mounting box 200, the first limiting piece 230 abuts against the end of the fan box 310.

[0076] Optionally, continuing to refer to Figure 1 、 Figure 4 、 Figure 6 and Figure 7 , the fan box 310 is slidably arranged on the first air inlet area 110, the side wall of the shell 100 opposite to the mounting box 200 is provided with an avoiding opening 130, and the avoiding opening 130 is arranged opposite to the opening 210. The avoiding opening 130 is provided with a pulling piece 330, one end of the pulling piece 330 located in the shell 100 is connected with the end of the fan box 310, and the other end of the pulling piece 330 located outside the shell 100 is detachably connected to the outer side wall of the shell 100. In this way, when the fan assembly 300 needs to be disassembled, the connection between the pulling piece 330 and the shell 100 is only needed to be released, and then the fan box 310 is pulled out by holding the pulling piece 330, so that the convenience of installation and maintenance of the fan assembly 300 is improved.

[0077] Optionally, continuing to refer to Figure 7 , the pulling piece 330 comprises a pulling head 331, a connecting frame 332, a handle 333 and a connecting edge 334. The pulling head 331 is located outside the shell 100, one end of the pulling head 331 close to the shell 100 is connected with the connecting frame 332, the connecting frame 332 is arranged through the avoiding opening 130 and connected with the fan box 310, the handle 333 is arranged on the other end of the pulling head 331 away from the shell 100, the opposite sides of the pulling head 331 are provided with the connecting edges 334, and the connecting edges 334 are detachably connected to the shell 100. When the fan assembly 300 is installed, the handle 333 is held, one end of the fan box 310 is aligned with the avoiding opening 130, the fan box 310 is pushed into the shell 100, until the connecting edges 334 abut against the outer side wall of the shell 100, and then the connecting edges 334 are fixed on the outer side wall of the shell 100. The pulling piece 330 has simple structure and is convenient to operate and process.

[0078] Further, in one possible embodiment, the connecting edge 334 can be connected with the shell 100 by means of bolt connection, the bolt connection structure is simple, the connection reliability is higher, and the disassembly is convenient. In another possible embodiment, the connecting edge 334 can also be connected with the shell 100 by means of clamping, the structure is simple, and the installation and disassembly are convenient. In other embodiments, the connecting edge 334 can also be connected with the shell 100 by other means, which can be set according to actual needs, and the application is not limited specifically.

[0079] Further, continuing to refer to Figure 1 and Figure 4 , in one possible embodiment, first supports 400 are arranged on the bottom wall of the shell 100 on the opposite sides of the first air inlet area 110, one end of the first support 400 abuts against the mounting box 200, and the other end abuts against the side wall of the shell 100. The end of the first support 400 close to the side wall of the shell 100 is provided with a fin 410, the heat sink 10 is arranged on the two first supports 400, and one end of the heat sink 10 abuts against the mounting box 200, and the other end abuts against the fin 410. It can be understood that the first air inlet area 110 is between the two first supports 400, and the heat sink 10 is lifted by the two first supports 400, so that the fan assembly 300 can be arranged between the two first supports 400, and the fan assembly 300 is located below the heat sink 10. By arranging the fin 410 at the end of the first support 400, the side wall of the shell 100 and the heat sink 10 can be isolated, and heat dissipation of the heat sink 10 is facilitated.

[0080] Optionally, continuing to refer to Figure 1 , the end of each first support 400 can be provided with a plurality of fins 410, such as two, three or the like, which can be set according to actual needs, and the application is not limited specifically.

[0081] Further, the plurality of fins 410 can be connected into a whole through a fixing plate, and then the fixing plate is connected with the side wall of the shell 100. In this way, the installation of the plurality of fins 410 is facilitated.

[0082] Further, continuing to refer to Figure 1 , the side of the at least one first support 400 away from the first air inlet area 110 is provided with a stop block 420, and the stop block 420 abuts against the heat sink 10. By arranging the stop block 420, the installation of the heat sink 10 can be guided and fixed, the installation difficulty of the heat sink 10 is reduced, and the installation stability of the heat sink 10 is improved.

[0083] Optionally, continuing to refer to Figure 1 , a plurality of stop blocks 420 can be arranged on the side of the first support 400 away from the first air inlet area 110. By arranging the plurality of stop blocks 420, the limiting effect on the heat sink 10 can be improved.

[0084] Further, continuing to refer to Figure 1 , Figure 3 , Figure 4 and Figure 6 , the first air inlet area 110 is located in the middle of the shell 100 and extends along the length direction of the shell 100. Along the width direction of the shell 100, a first chamber 101 and a second chamber 102 are respectively formed on both sides of the first air inlet area 110. The shell 100 is provided with a first air outlet 120 on at least one side wall opposite to the first chamber 101, and at least one side wall opposite to the second chamber 102. The first chamber 101 is provided with a plurality of inverter inductors 30, and the second chamber 102 is provided with a plurality of boost inductors 40. In this way, under the action of the fan assembly 300, after the external cold air exchanges heat with the radiator 10, part of the cold air will enter the first chamber 101 to blow and dissipate heat on the plurality of inverter inductors 30 and then be discharged from the corresponding first air outlet 120 of the first chamber 101. Another part of the cold air will enter the second chamber 102 to blow and dissipate heat on the plurality of boost inductors 40 and then be discharged from the corresponding first air outlet 120 of the second chamber 102. In this way, without increasing the volume of the shell 100, the heat dissipation of the inverter inductors 30 and the boost inductors 40 is realized, and the utilization rate of the cold air is improved.

[0085] Optionally, in the present embodiment, the inverter inductors 30 are provided in three, and the three inverter inductors 30 form a row on one side of the radiator 10. The boost inductors 40 are also provided in three, and the three boost inductors 40 form a row on the other side of the radiator 10. In this way, the air that exchanges heat with the radiator 10 can be blown to all the inverter inductors 30 and all the boost inductors 40 at the same time, and the heat dissipation effect is better.

[0086] Of course, in other embodiments, the number and arrangement of the inverter inductors 30 and the boost inductors 40 can also be other, which can be arranged according to actual needs, and the present application does not make specific limitations.

[0087] Optionally, continuing to refer to Figure 1 , in the present embodiment, a plurality of first air outlets 120 are provided on both side walls of the shell 100 opposite to the first chamber 101 in the length direction of the shell 100, and a part of the top plate of the shell 100 is provided with a plurality of first air outlets 120 opposite to the first chamber 101. A plurality of first air outlets 120 are provided on one side wall of the shell 100 opposite to the second chamber 102 in the width direction of the shell 100.

[0088] Further, as Figure 1 , Figure 3 , Figure 6 , Figure 8 and Figure 9As shown, the first chamber 101 and the second chamber 102 are each provided with a mounting structure 500 for fixing a plurality of inverter inductors 30 or a plurality of boost inductors 40. The plurality of inverter inductors 30 and the plurality of boost inductors 40 are integrated on the mounting structure 500 to form a modular assembly, facilitating the assembly of the plurality of inverter inductors 30 and the plurality of boost inductors 40 in the shell 100.

[0089] Specifically, the mounting structure 500 includes a second support 510 and a plurality of second limiters 520. The second support 510 is mounted to the bottom wall of the shell 100, and the plurality of second limiters 520 are arranged on the second support 510. At least one second limiter 520 is arranged at the opposite corners of each inverter inductor 30 or boost inductor 40. That is, the second limiter 520 is used to limit the corners of the inverter inductor 30 or boost inductor 40.

[0090] The second limiter 520 includes a connecting plate 521, a stop plate 522, and an inclined plate 523. The connecting plate 521 is connected to the second support 510. Adjacent sides of the connecting plate 521 are each provided with a stop plate 522, and the two stop plates 522 are respectively abutted against the adjacent two side walls of the inverter inductor 30 or boost inductor 40. The top of at least one stop plate 522 is provided with an inclined plate 523, and the inclined plate 523 is used to guide the installation of the inverter inductor 30 or boost inductor 40.

[0091] For ease of understanding, two second limiters 520 are arranged corresponding to one inverter inductor 30, and the assembly steps of the inverter inductor 30 and the mounting structure 500 are briefly introduced as follows:

[0092] First, take the inverter inductor 30 and move it above the two second limiters 520, and make the two opposite corners of the inverter inductor 30 correspond to one second limiter 520 respectively.

[0093] Then, move the inverter inductor 30 downward to make it close to the second support 510. In this process, if the inverter inductor 30 is not accurately positioned at the beginning, one of the opposite corners of the inverter inductor 30 will contact the corresponding inclined plate 523. Under the guidance of the inclined plate 523, the inverter inductor 30 enters between the two second limiters 520 until the bottom of the inverter inductor 30 contacts the second support 510. At this time, the two stop plates 522 of each second limiter 520 are respectively abutted against the adjacent two side walls of the corner of the inverter inductor 30.

[0094] The mounting structure 500 fixes the inverter inductor 30 or the boost inductor 40 by clamping the inverter inductor 30 or the boost inductor 40 with the second limiting piece 520, has a simple structure, and does not need to change the structure of the inverter inductor 30 or the boost inductor 40, facilitating the mounting and dismounting of the inverter inductor 30 or the boost inductor 40. Moreover, the installation difficulty of the inverter inductor 30 and the boost inductor 40 is further reduced through the guidance of the inclined plate 523.

[0095] Optionally, the side walls of the two stop plates 522 close to each other are connected to each other, so that the structural strength of the two stop plates 522 is improved.

[0096] Optionally, in a possible embodiment, the connecting plate 521, the two stop plates 522 and the inclined plate 523 form an integrated structure. In this way, the structural strength of the second limiting piece 520 is further improved.

[0097] Further, as shown in Figure 10 The second support 510 includes a convex part 511 and a flange 512 arranged on opposite sides of the convex part 511, and the convex part 511 is used to support the inverter inductor 30 or the boost inductor 40. A plurality of clamping grooves 5111 are arranged on the side wall connecting the convex part 511 and the flange 512, and the second limiting piece 520 is arranged in one-to-one correspondence with the clamping grooves 5111 and the connecting plate 521 is connected with the flange 512. A clamping protrusion 5221 is arranged on one of the two stop plates 522 of the second limiting piece 520, and the clamping protrusion 5221 is clamped with the corresponding clamping groove 5111. Through the cooperation of the clamping protrusion 5221 and the clamping groove 5111, the pre-fixing of the second limiting piece 520 can be realized, the connection of the connecting plate 521 and the flange 512 is facilitated, and the cooperation of the clamping protrusion 5221 and the clamping groove 5111 can also improve the stability of the installation of the second limiting piece 520. In addition, the inverter inductor 30 or the boost inductor 40 is supported by the convex part 511, which can avoid the contact between the inverter inductor 30 or the boost inductor 40 and the connecting plate 521, and further avoid the contact between the structure for connecting the flange 512 and the connecting plate 521 and the inverter inductor 30 or the boost inductor 40.

[0098] Optionally, in a possible embodiment, the clamping protrusion 5221 and the stop plate 522 form an integrated structure.

[0099] Optionally, in a possible embodiment, the fastener 530 is simultaneously arranged through the connecting plate 521, the flange 512 and the bottom wall of the shell 100, so as to fix the connecting plate 521, the flange 512 and the shell 100 together. That is, one fastener 530 can simultaneously fix the second support 510 and the second limiting piece 520, simplifying the structure of the parts and facilitating assembly.

[0100] It can be understood that the fastener 530 can be but is not limited to a rivet.

[0101] Further, as shown in Figure 11 and Figure 12 The photovoltaic inverter heat dissipation structure further comprises a mainframe 600. The mainframe 600 is installed at a mounting opening on the top of the shell 100, and the top of the shell 100 is provided with a guide plate 140 on one side of the mounting opening, and the guide plate 140 abuts against a side wall of the mainframe 600. By arranging the guide plate 140, the mainframe 600 can be limited, and the connection between the mainframe 600 and the shell 100 is facilitated. Moreover, by installing the mainframe 600 on the top of the shell 100, the shell 100 does not need to be flipped for assembly, and the assembly difficulty is reduced.

[0102] Optionally, continuing to refer to Figure 11 The bottom wall of the mainframe 600 is provided with two through holes 610, and the two through holes 610 are respectively opposite to the inlet 201 and the outlet 202 of the heat exchanger 20. In this way, the heat exchanger 20 can directly exchange heat with components in the mainframe 600 through the two through holes 610, and the structure is simplified.

[0103] The embodiment further provides a photovoltaic inverter, which comprises a mainframe and the photovoltaic inverter heat dissipation structure.

[0104] Optionally, in a possible embodiment, the mainframe is arranged in the mainframe 600.

[0105] The photovoltaic inverter has small volume, good heat dissipation performance and low energy consumption due to the photovoltaic inverter heat dissipation structure.

[0106] Obviously, the above embodiment of the utility model is only for clear illustration of the utility model, and is not a limitation on the implementation mode of the utility model. For ordinary skilled in the art, various obvious changes, re-adjustment and replacement can be made without departing from the protection scope of the utility model. Here, all the implementation modes need not to be exhausted. Any modification, equivalent replacement and improvement within the spirit and principle of the utility model should be included in the protection scope of the utility model claim.

Claims

1. A heat dissipation structure for a photovoltaic inverter, characterized by, The application relates to a heat dissipation device. The shell (100) is provided with a first air inlet area (110) on a bottom wall, a first air outlet (120) on a side wall, and a heat radiator (10) installed in the shell (100); An installation box (200) is installed on one side wall of the shell (100), and one side of the installation box (200) is provided with an opening (210) communicating with the first air inlet area (110); a second air outlet (220) is arranged on the side wall of the installation box (200), and a heat exchanger (20) is installed in the installation box (200); A fan assembly (300) is installed on the first air inlet area (110), and a part of the fan assembly (300) is located below the heat radiator (10), and another part of the fan assembly (300) enters the installation box (200) through the opening (210) and is located below the heat exchanger (20); the fan assembly (300) is used for simultaneously supplying air to the heat radiator (10) and the heat exchanger (20).

2. The heat dissipation structure for a photovoltaic inverter according to claim 1, characterized by, A first limiting piece (230) is arranged on the bottom wall of the installation box (200) on one side of the opening (210) and abuts against the length direction end of the fan assembly (300).

3. The heat dissipation structure for a photovoltaic inverter according to claim 1, characterized by, The fan assembly (300) comprises: A fan box (310) is installed on the first air inlet area (110) and enters the installation box (200) through the opening (210) at one end; a plurality of second air inlet areas (311) are arranged on the bottom wall of the fan box (310); A plurality of fans (320) are arranged one by one in correspondence with the second air inlet areas (311), one fan (320) is arranged on each second air inlet area (311), and at least one part of at least one fan (320) is located in the installation box (200).

4. The heat dissipation structure for a photovoltaic inverter according to claim 3, characterized by, The fan box (310) is slidably arranged on the first air inlet area (110); the side walls of the shell (100) and the installation box (200) are provided with avoiding openings (130) arranged opposite to the opening (210); a pulling piece (330) is arranged in the avoiding opening (130); one end of the pulling piece (330) located in the shell (100) is connected with the end of the fan box (310); and the other end of the pulling piece (330) located outside the shell (100) is detachably connected to the outer side wall of the shell (100).

5. The heat dissipation structure for a photovoltaic inverter according to claim 1, characterized by, On the bottom wall of the shell (100), first supports (400) are arranged on opposite sides of the first air inlet area (110), one end of the first support (400) abuts the mounting box (200), and the other end abuts the side wall of the shell (100), one end of the first support (400) close to the side wall of the shell (100) is provided with a fin (410), the heat sink (10) is arranged on two first supports (400), and one end of the heat sink (10) abuts the mounting box (200), and the other end abuts the fin (410).

6. The heat dissipation structure for a photovoltaic inverter according to any one of claims 1 to 5, characterized by, The first air inlet area (110) is located in the middle of the shell (100) and extends along the length direction of the shell (100), and along the width direction of the shell (100), a first chamber (101) and a second chamber (102) are formed on both sides of the first air inlet area (110), respectively, at least one side wall of the shell (100) opposite to the first chamber (101), and at least one side wall of the shell (100) opposite to the second chamber (102) is provided with the first air outlet (120), a plurality of inverter inductors (30) are arranged in the first chamber (101), and a plurality of boost inductors (40) are arranged in the second chamber (102).

7. The heat dissipation structure for a photovoltaic inverter according to claim 6, characterized by The first chamber (101) and the second chamber (102) are both provided with a mounting structure (500), the mounting structure (500) is used for fixing a plurality of inverter inductors (30) or a plurality of boost inductors (40), the mounting structure (500) comprises a second support (510) and a plurality of second limiters (520), the second support (510) is mounted on the bottom wall of the shell (100), and a plurality of second limiters (520) are arranged on the second support (510), at least one second limiter (520) is arranged at the diagonal position of each inverter inductor (30) or boost inductor (40); The second limiter (520) comprises a connecting plate (521), a stop plate (522) and an inclined plate (523), the connecting plate (521) is connected with the second support (510), adjacent sides of the connecting plate (521) are both provided with the stop plate (522), the two stop plates (522) abut the adjacent two side walls of the inverter inductor (30) or the boost inductor (40) respectively, and the top of at least one stop plate (522) is provided with the inclined plate (523), the inclined plate (523) is used for guiding the installation of the inverter inductor (30) or the boost inductor (40).

8. The heat dissipation structure for a photovoltaic inverter according to claim 7, characterized by, The second support (510) comprises a convex portion (511) and a flange (512) arranged on opposite sides of the convex portion (511), and the convex portion (511) is used for supporting the inverter inductor (30) or the boost inductor (40); A plurality of clamping grooves (5111) are arranged on the side wall of the convex part (511) connected with the flange (512), the second limiting member (520) is arranged in one-to-one correspondence with the clamping grooves (5111), the connecting plate (521) is connected with the flange (512), and one of the stop plates (522) of the second limiting member (520) is provided with a clamping convex (5221) which is clamped with the corresponding clamping groove (5111).

9. The heat dissipation structure for a photovoltaic inverter according to any one of claims 1 to 5, characterized by, The photovoltaic inverter heat dissipation structure further comprises a mainframe (600) installed at the mounting opening of the top of the shell (100), and a guide plate (140) is arranged on one side of the mounting opening of the top of the shell (100) and abuts against the side wall of the mainframe (600).

10. Photovoltaic inverter, characterized by The photovoltaic inverter heat dissipation structure comprises a mainframe and the photovoltaic inverter heat dissipation structure according to any one of claims 1-9, and the mainframe is arranged above the photovoltaic inverter heat dissipation structure.

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