A hybrid inverter

Abstract

The application discloses a kind of hybrid inverters, belong to electrical component technical field.A kind of hybrid inverter, including lower support plate, lower support plate is used to place hybrid inverter body;The lower side of the lower support plate is provided with the lower support frame of fixed connection;Hybrid inverter body is provided with heat dissipation area, and heat dissipation hole is arranged at heat dissipation area;The lower support plate is provided with the heat dissipation box with opening and closing function, and when heat dissipation box is closed, the outer wall of hybrid inverter body is surrounded with heat dissipation cavity.The hybrid inverter provided in the application can pass into gas to gas supply joint after power pump is opened, gas flows in ventilation frame, and when passing through heat dissipation plate, heat in heat dissipation cavity and hybrid inverter body can be carried away by heat dissipation plate and other components, so that hybrid inverter body can be cooled in the time period of rainy day with higher humidity, to avoid that gas with higher humidity directly contacts with components in hybrid inverter body.

Description

Technical Field

[0001] This invention belongs to the field of electrical component technology, and specifically relates to a hybrid inverter. Background Technology

[0002] A hybrid inverter is a power electronic device that integrates photovoltaic power generation control, energy storage management, and grid-connected / off-grid switching functions. It is widely used in small industrial and commercial parks, island microgrids, farms, villas, and battery cascade utilization scenarios. In these applications, hybrid inverters are typically placed directly on the ground or installed on the ground using simple brackets to facilitate daily operation, maintenance, and wiring management for multiple units operating in parallel.

[0003] Existing hybrid inverters typically employ a heat dissipation design that involves creating ventilation holes on the casing, allowing the internal cavity to be directly connected to the external environment through these holes, thus enabling air convection cooling.

[0004] However, in rainy weather or environments with high humidity, external moisture can easily enter the inverter's internal cavity through the heat dissipation vents, coming into direct contact with internal electronic components, power devices, and control circuit boards. Excessively humid gases condense on the surfaces of electronic components, easily causing short circuits, decreased insulation performance, or component corrosion, severely impacting the equipment's lifespan and operational safety. While some solutions employ dustproof and waterproof meshes at the heat dissipation vents, this method only blocks some water droplets and large particles, offering almost no protection against airborne water vapor, and cannot fundamentally resolve the contradiction between heat dissipation and moisture prevention in high-humidity environments. Therefore, this application proposes a hybrid inverter. Summary of the Invention

[0005] The purpose of this invention is to provide a hybrid inverter to solve the problem mentioned in the background art, where external moisture can easily enter the internal cavity of the inverter through heat dissipation holes and come into direct contact with the internal electronic components, power devices and control circuit boards in rainy or high-humidity environments.

[0006] To achieve the above objectives, the present invention provides the following technical solution: a hybrid inverter, including a lower support plate, the lower support plate being used to place the hybrid inverter body; A fixedly connected lower support frame is provided on the lower side of the lower support plate; The hybrid inverter body has a heat dissipation area, and the heat dissipation area is provided with heat dissipation holes; The lower support plate is provided with a heat dissipation box with opening and closing function. When the heat dissipation box is closed, it surrounds the heat dissipation cavity with the outer wall of the hybrid inverter body, and the heat dissipation cavity covers the entire heat dissipation area. The heat dissipation box is provided with a heat dissipation plate, and several heat dissipation fins are inserted into the heat dissipation plate. One end of the heat dissipation fins is connected to the heat dissipation cavity, and the other end is inserted into the ventilation frame. The ventilation frame has an opening at one end that allows air to pass through, and an air supply connector at the other end. The lower support plate is equipped with a power pump that communicates with the air supply connector and a mounting bracket for installing the power pump.

[0007] Preferably, the lower support plate is provided with a support pipe fixedly connected to it and an upper support plate fixedly connected to the support pipe.

[0008] Preferably, the lower support plate is provided with a fixedly connected lower docking plate, and the outer shell of the hybrid inverter body is provided with a lower groove and an upper groove, and the lower docking plate cooperates with the lower groove in the hybrid inverter body.

[0009] Preferably, the upper support plate is provided with a fixedly connected upper docking plate, which engages with the upper groove in the hybrid inverter body.

[0010] Preferably, a positioning rod is inserted into the upper connecting plate, and the positioning rod is inserted into the support tube, with multiple support tubes distributed in parallel.

[0011] Preferably, the hybrid inverter body is provided with an operation panel.

[0012] Preferably, the lower support frame includes an upper horizontal plate, a lower horizontal plate, and support rods for connecting the upper horizontal plate and the lower horizontal plate. Four support rods are provided, and the four support rods are located at the four corners of the upper horizontal plate.

[0013] Preferably, the outer wall of the hybrid inverter body is provided with a fixedly connected mounting base and an adjusting motor. A rotating shaft with rotatable engagement is inserted into the mounting base. The rotating shaft is fixedly connected to the heat sink box. The output shaft of the adjusting motor is drivenly connected to the rotating shaft. The adjusting motor is mounted on the outer wall of the hybrid inverter body through a motor bracket.

[0014] Preferably, the heat sink box is provided with a first sealing plate fixedly connected to it, the outer wall of the hybrid inverter body is provided with a second sealing plate fixedly connected to it, and a third sealing plate fixedly connected to the second sealing plate. There are two third sealing plates, and the two third sealing plates are located on the upper and lower sides of the heat sink box respectively. A sealing part is provided inside the second sealing plate, and the center line of the sealing part coincides with the center line of the rotating shaft.

[0015] Preferably, the lower support frame is provided with a delivery pipe connected to the power pump, an airbag connected to the delivery pipe and installed on the lower support frame, a counterweight block fixedly connected to the bottom of the airbag, and a mounting plate fixedly connected to the lower support frame, and an adsorption block located on the mounting plate, with the adsorption block located directly below the counterweight block.

[0016] Beneficial effects: The present invention provides a hybrid inverter, wherein a heat dissipation box with an opening and closing function is provided at the lower support plate. When the heat dissipation box is closed, it surrounds the heat dissipation cavity with the outer wall of the hybrid inverter body, and the heat dissipation cavity covers the entire heat dissipation area. A heat dissipation plate is provided on the heat dissipation box, and several heat dissipation fins are inserted into the heat dissipation plate. One end of the heat dissipation fins is connected to the heat dissipation cavity, and the other end is inserted into the ventilation frame. When there is air flow at the ventilation frame, heat exchange can be carried out, and the heat dissipation fins can conduct heat, so that the heat at the hybrid inverter body can be exchanged with the air flowing at the ventilation frame, thereby achieving the heat dissipation effect of the hybrid inverter body. In this way, after the power pump is turned on, gas can be introduced into the air supply connector. The gas flows through the ventilation frame and, when it passes through the heat sink, it can carry away the heat from the heat dissipation chamber and the hybrid inverter body through the heat sink and other components. This can dissipate heat from the hybrid inverter body during periods of high humidity, such as rainy days, and prevent the high-humidity gas from directly contacting the components in the hybrid inverter body. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the hybrid inverter in this invention; Figure 2 This is a side view of the hybrid inverter in this invention; Figure 3 This is one of the schematic diagrams of the internal structure of the hybrid inverter in this invention; Figure 4 This is the second schematic diagram of the internal structure of the hybrid inverter in this invention; Figure 5 For the present invention Figure 4 Enlarged structural diagram at point A; Figure 6 This is a schematic diagram of the structure of the airbag and counterweight in this invention; Figure 7 This is a schematic diagram of the mounting plate and adsorption block in this invention.

[0018] Explanation of reference numerals in the attached figures: 1. Hybrid inverter body; 101. Heat dissipation holes; 2. Lower support plate; 3. Operation panel; 4. Lower docking plate; 5. Support tube; 6. Upper support plate; 7. Upper docking plate; 8. Lower support frame; 9. Heat sink box; 10. First sealing plate; 11. Second sealing plate; 12. Adjustment motor; 13. Third sealing plate; 14. Ventilation frame; 15. Heat sink plate; 16. Air supply connector; 17. Power pump; 18. Mounting bracket; 19. Delivery pipeline; 20. Airbag; 21. Counterweight; 22. Mounting plate; 23. Adsorption block. Detailed Implementation

[0019] The specific embodiments of the present invention will be described in detail below, but it should be understood that the scope of protection of the present invention is not limited to the specific embodiments.

[0020] like Figures 1-7 As shown in the figure, a hybrid inverter provided in this embodiment of the invention includes a lower support plate 2, which is used to place the hybrid inverter body 1. The hybrid inverter body 1 is fixedly installed on the lower support plate 2 by bolts. The lower support plate 2 is provided with a support pipe 5 fixedly connected to the support pipe 5 and an upper support plate 6 fixedly connected to the support pipe 5.

[0021] To restrict the position of the hybrid inverter body 1, a lower docking plate 4 is fixedly connected to the lower support plate 2. The outer shell of the hybrid inverter body 1 is provided with a lower groove and an upper groove. The lower docking plate 4 cooperates with the lower groove in the hybrid inverter body 1. An upper docking plate 7 is fixedly connected to the upper support plate 6. The upper docking plate 7 cooperates with the upper groove in the hybrid inverter body 1. A positioning rod is inserted into the upper docking plate 7. The positioning rod is inserted into the support tube 5. Multiple support tubes 5 are distributed in parallel.

[0022] It should be noted that the hybrid inverter body 1 is equipped with an operation panel 3.

[0023] To avoid the hybrid inverter body 1 being too close to the ground, a fixedly connected lower support frame 8 is provided on the lower side of the lower support plate 2. The lower support frame 8 includes an upper horizontal plate, a lower horizontal plate, and support rods for connecting the upper horizontal plate and the lower horizontal plate. There are four support rods, and the four support rods are located at the four corners of the upper horizontal plate.

[0024] The hybrid inverter body 1 has the function of supporting photovoltaic access, contains a grid-connected and off-grid switching device, supports multiple units to operate in parallel, supports hybrid operation of generators, and supports fast grid-connected and off-grid switching. Such a hybrid inverter body 1 is more suitable for various scenarios such as small industrial and commercial enterprises, small island microgrids, farms, villas, and battery cascade utilization. In these application scenarios, the hybrid inverter body 1 is mostly placed on the ground. In order to prevent rainwater from accumulating and reaching the height of the hybrid inverter body 1 due to the inability to drain in time, a lower support frame 8 is set under the hybrid inverter body 1 to raise the height of the hybrid inverter body 1 and increase its distance from the ground.

[0025] It should be noted that a heat dissipation area is provided inside the hybrid inverter body 1, and a heat dissipation hole 101 is provided in the heat dissipation area, which is connected to the internal cavity of the hybrid inverter body 1.

[0026] On rainy days, the humidity in the air is high. The high humidity can cause short circuits in the electronic components of the hybrid inverter body 1 if the air comes into direct contact with the components. To protect the hybrid inverter body 1, a heat dissipation box 9 with an opening and closing function is provided at the lower support plate 2. When the heat dissipation box 9 is closed, it surrounds the heat dissipation cavity with the outer wall of the hybrid inverter body 1. The heat dissipation cavity covers the entire heat dissipation area and is suitable for heat dissipation on rainy days with high humidity. The opening and closing of the heat dissipation box 9 can be manually controlled.

[0027] Specifically, the outer wall of the hybrid inverter body 1 is provided with a fixedly connected mounting base and an regulating motor 12. A rotating shaft is inserted into the mounting base and is fixedly connected to the heat sink 9. The output shaft of the regulating motor 12 is connected to the rotating shaft. The two can be connected by a coupling. The regulating motor 12 is mounted on the outer wall of the hybrid inverter body 1 through a motor bracket.

[0028] In order to seal the connection between the heat sink 9 and the hybrid inverter body 1 when the heat sink 9 is in the closed state, a first sealing plate 10 is fixedly connected to the heat sink 9. A second sealing plate 11 and a third sealing plate 13 are fixedly connected to the outer wall of the hybrid inverter body 1. There are two third sealing plates 13, and the two third sealing plates 13 are located on the upper and lower sides of the heat sink 9 respectively. A sealing part is provided inside the second sealing plate 11. The sealing part is set in an arc shape, and the center line of the sealing part coincides with the center line of the rotating shaft.

[0029] There are two third sealing plates 13, located on the upper and lower sides of the heat sink 9 respectively. When the heat sink 9 is closed, the outer wall of the heat sink 9 will contact the third sealing plate 13. The second sealing plate 11 is fixed on the outer wall of the hybrid inverter body 1 and has a sealing part. When the heat sink 9 is closed, the first sealing plate 10 fixed on the heat sink 9 will fit with the second sealing plate 11. In this way, together with the third sealing plate 13 and the outer wall of the hybrid inverter body 1, they can surround the closed heat sink cavity together with the heat sink 9. The heat sink cavity will contain the heat sink hole 101, preventing moisture from the outside from directly entering the interior of the hybrid inverter body 1.

[0030] Specifically, a heat sink 15 is provided on the heat sink box 9, and several heat sink fins are inserted into the heat sink 15. One end of the heat sink fins is connected to the heat sink cavity, and the other end is inserted into the ventilation frame 14. When there is airflow at the ventilation frame 14, heat exchange can be carried out, and the heat sink fins can conduct heat, so that the heat at the hybrid inverter body 1 can be exchanged with the air flowing at the ventilation frame 14, thereby achieving the heat dissipation effect of the hybrid inverter body 1.

[0031] More specifically, one end of the ventilation frame 14 is provided with an opening that allows air to pass through, and the other end is provided with an air supply connector 16. The lower support plate 2 is provided with a power pump 17 that communicates with the air supply connector 16 and a mounting bracket 18 for mounting the power pump 17. The mounting bracket 18 is fixedly connected to the outer wall of the hybrid inverter body 1.

[0032] After the power pump 17 is turned on, it can introduce gas into the air supply connector 16. The gas flows through the ventilation frame 14 and passes through the heat sink 15. The heat sink 15 and other components can carry away the heat from the heat sink cavity and the hybrid inverter body 1.

[0033] To prevent rainwater from approaching the upper support plate 6 and penetrating into the hybrid inverter body 1, a delivery pipe 19 connected to the power pump 17 and an airbag 20 connected to the delivery pipe 19 and installed on the lower support frame 8 are provided at the lower support frame 8. The upper end face of the airbag 20 is attached to the lower support plate 2. The power pump 17 can be provided with two air outlets, which are respectively connected to the air supply connector 16 and the delivery pipe 19, or it can be provided with one air outlet, but a T-connector is provided at the air outlet, which connects the air supply connector 16 and the delivery pipe 19.

[0034] In order for the airbag 20 to expand downward and squeeze out rainwater when it is inflated, a counterweight 21 is fixedly connected to the bottom of the airbag 20. A mounting plate 22 and an adsorption block 23 located on the mounting plate 22 are fixedly connected to the lower support frame 8. The adsorption block 23 is located directly below the counterweight 21. The counterweight 21 is made of magnet, and the adsorption block 23 is made of magnetic material, such as stainless steel.

[0035] When water accumulates at the lower support frame 8, the valve at the delivery pipe 19 can be opened to allow the power pump 17 to deliver gas to the delivery pipe 19. The delivery pipe 19 is connected to the airbag 20, which is located at the bottom of the lower support frame 8. After the airbag 20 is inflated, it will expand. Since the lower support plate 2 at the top of the airbag 20 cannot be moved, the airbag 20 will expand downward and squeeze the rainwater inside the lower support frame 8, thus squeezing the rainwater out of the lower support frame 8. When the airbag 20 expands downward, the counterweight 21 located in the center will pull the airbag 20, squeezing it from the middle to both sides. In this way, the rainwater is gradually squeezed out of the lower support frame 8.

[0036] In summary, this embodiment of the invention provides a hybrid inverter. A heat dissipation box 9 with an opening and closing function is provided at the lower support plate 2. When the heat dissipation box 9 is closed, it surrounds the heat dissipation cavity with the outer wall of the hybrid inverter body 1, and the heat dissipation cavity covers the entire heat dissipation area. A heat dissipation plate 15 is provided on the heat dissipation box 9. Several heat dissipation fins are inserted into the heat dissipation plate 15. One end of the heat dissipation fins is connected to the heat dissipation cavity, and the other end is inserted into the ventilation frame 14. When there is air flow at the ventilation frame 14, heat exchange can be carried out, and the heat dissipation fins can conduct heat, so that the heat at the hybrid inverter body 1 can be exchanged with the air flowing at the ventilation frame 14, thereby achieving the heat dissipation effect of the hybrid inverter body 1. In this way, after the power pump 17 is turned on, gas can be introduced into the air supply connector 16. The gas flows through the ventilation frame 14 and passes through the heat sink 15. The heat sink 15 and other components can carry away the heat from the heat sink cavity and the hybrid inverter body 1. This can dissipate heat from the hybrid inverter body 1 during periods of high humidity, such as rainy days, and prevent the high-humidity gas from directly contacting the components in the hybrid inverter body 1.

[0037] When water accumulates on the ground, the valve at the delivery pipe 19 can be opened to allow the power pump 17 to deliver gas to the delivery pipe 19. The delivery pipe 19 is connected to the airbag 20, which is located at the bottom of the lower support frame 8. After the airbag 20 is inflated, it will expand. Since the lower support plate 2 at the top of the airbag 20 cannot be moved, the airbag 20 will expand downward and squeeze the rainwater inside the lower support frame 8, squeezing the rainwater out of the lower support frame 8. When the airbag 20 expands downward, the counterweight 21 located in the center will pull the airbag 20, squeezing it from the middle to both sides. In this way, the rainwater is gradually squeezed out of the lower support frame 8, which can prevent rainwater from penetrating the lower support plate 2 and directly contacting the hybrid inverter body 1.

[0038] The above-disclosed embodiments are merely a few specific examples of the present invention. However, the embodiments of the present invention are not limited thereto, and any variations that can be conceived by those skilled in the art should fall within the protection scope of the present invention.

Claims

1. A hybrid inverter, comprising a lower support plate (2), characterized in that, The lower support plate (2) is used to place the hybrid inverter body (1); The lower support plate (2) is provided with a fixedly connected lower support frame (8) on its lower side. The hybrid inverter body (1) has a heat dissipation area, and heat dissipation holes (101) are provided in the heat dissipation area. A heat dissipation box (9) with opening and closing function is provided at the lower support plate (2). When the heat dissipation box (9) is closed, it surrounds the heat dissipation cavity with the outer wall of the hybrid inverter body (1), and the heat dissipation cavity covers the entire heat dissipation area. The heat dissipation box (9) is provided with a heat dissipation plate (15), and a number of heat dissipation fins are inserted in the heat dissipation plate (15). One end of the heat dissipation fins is connected to the heat dissipation cavity, and the other end is inserted into the ventilation frame (14). The ventilation frame (14) has an opening at one end that allows air to pass through, and an air supply connector (16) at the other end. The lower support plate (2) is provided with a power pump (17) that communicates with the air supply connector (16) and a mounting bracket (18) for installing the power pump (17).

2. A hybrid inverter as described in claim 1, characterized in that, The lower support plate (2) is provided with a fixedly connected support pipe (5) and an upper support plate (6) fixedly connected to the support pipe (5).

3. A hybrid inverter as described in claim 2, characterized in that, The lower support plate (2) is provided with a fixedly connected lower docking plate (4), and the outer shell of the hybrid inverter body (1) is provided with a lower groove and an upper groove. The lower docking plate (4) cooperates with the lower groove in the hybrid inverter body (1).

4. A hybrid inverter as described in claim 3, characterized in that, The upper support plate (6) is provided with a fixedly connected upper docking plate (7), which is engaged with the upper groove in the hybrid inverter body (1).

5. A hybrid inverter as described in claim 4, characterized in that, A positioning rod is inserted into the upper connecting plate (7), and the positioning rod is inserted into the support tube (5). Multiple support tubes (5) are distributed in parallel.

6. A hybrid inverter as described in claim 1, characterized in that, The hybrid inverter body (1) is equipped with an operation screen (3).

7. A hybrid inverter as described in claim 1, characterized in that, The lower support frame (8) includes an upper horizontal plate, a lower horizontal plate, and support rods for connecting the upper horizontal plate and the lower horizontal plate. There are four support rods, and the four support rods are located at the four corners of the upper horizontal plate.

8. A hybrid inverter as described in claim 1, characterized in that, The outer wall of the hybrid inverter body (1) is provided with a fixed mounting base and an adjustment motor (12). A rotating shaft is inserted into the mounting base and is fixedly connected to the heat sink box (9). The output shaft of the adjustment motor (12) is connected to the rotating shaft. The adjustment motor (12) is mounted on the outer wall of the hybrid inverter body (1) through a motor bracket.

9. A hybrid inverter as described in claim 1, characterized in that, The heat sink (9) is provided with a first sealing plate (10) fixedly connected. The outer wall of the hybrid inverter body (1) is provided with a second sealing plate (11) fixedly connected and a third sealing plate (13) fixedly connected to the second sealing plate (11). There are two third sealing plates (13), and the two third sealing plates (13) are located on the upper and lower sides of the heat sink (9) respectively. The second sealing plate (11) is provided with a sealing part, and the center line of the sealing part coincides with the center line of the rotating shaft.

10. A hybrid inverter as described in claim 1, characterized in that, The lower support frame (8) is provided with a delivery pipe (19) connected to the power pump (17) and an airbag (20) connected to the delivery pipe (19) and installed on the lower support frame (8). The bottom of the airbag (20) is provided with a fixedly connected counterweight (21). The lower support frame (8) is provided with a fixedly connected mounting plate (22) and an adsorption block (23) located on the mounting plate (22). The adsorption block (23) is located directly below the counterweight (21).

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