An inverter passivation heat sink

Abstract

This application discloses an inverter passivation heat sink, belonging to the technical field of cooling devices. It provides an inverter passivation heat sink less affected by environmental factors, comprising an open-ended air-collecting duct. Air delivery slots penetrating the inner and outer walls are formed at the top and bottom of the air-collecting duct. Component mounting plates are respectively arranged above and below the air-collecting duct, each with a through-slot penetrating its upper and lower surfaces. The end face of the component mounting plate facing away from the air-collecting duct is suitable for mounting the internal electronic components of the inverter. A heat-absorbing coil is arranged between each component mounting plate and the air-collecting duct, with flowing cooling water suitable for passing through it. End caps with air inlet grilles are provided at both open ends of the air-collecting duct. This application, by setting a heat-absorbing coil structure between the air-collecting duct and the component mounting plates, utilizes water cooling to actively reduce the temperature of the air entering the component mounting plates, making the air-cooling efficiency less affected by ambient temperature, thereby achieving more efficient heat dissipation and cooling.

Description

Technical Field

[0001] This application relates to the field of cooling device technology, and more particularly to an inverter passivation heat sink. Background Technology

[0002] A photovoltaic (PV) inverter converts the variable DC voltage generated by photovoltaic solar panels into AC power at the mains frequency, serving as a balancing element in a PV array system. During operation, the inverter's temperature continuously rises due to power losses in internal electronic components and heat generated by resistance, affecting its performance and stability. The heat sink, as a crucial component for inverter heat dissipation, directly impacts the overall cooling effect of the inverter.

[0003] However, existing inverter passivation heat sinks typically use direct air cooling, and their cooling efficiency is greatly affected by the ambient temperature. Summary of the Invention

[0004] The purpose of this application is to provide an inverter passivation heat sink that is less affected by the environment.

[0005] To achieve the above objectives, this application provides an inverter passivation heat sink: comprising an air-collecting duct open at both ends, with air delivery slots penetrating the inner and outer walls at both the top and bottom of the air-collecting duct, and component configuration plates respectively arranged above and below the air-collecting duct, each component configuration plate having a through groove penetrating its upper and lower surfaces, the end face of the component configuration plate facing away from the air-collecting duct being suitable for arranging internal electronic components of the inverter, a heat-absorbing coil being arranged between each component configuration plate and the air-collecting duct, the heat-absorbing coil being suitable for flowing cooling water, end caps being provided at both open ends of the air-collecting duct, each end cap having an air intake grille, and fans being provided at the inner top and inner bottom of the air-collecting duct to drive air and generate airflow, the airflow entering the air-collecting duct through the air intake grille, and then being cooled by the heat-absorbing coils after passing through the air delivery slots and through grooves before passing over the surface of the electronic components on the component configuration plate, achieving efficient heat dissipation.

[0006] As a preferred embodiment, the component configuration tray includes a tray with a mounting groove on the end face of the tray facing away from the air-collecting duct. The end face of the tray facing the air-collecting duct has a heat-conducting plate, and the end face of the heat-conducting plate facing away from the tray has a plurality of guide fins. All the guide fins are located between parallel and adjacent tubes of the heat-absorbing coil. The through groove extends from the end face of the guide fins into the mounting groove, and rapidly absorbs the heat of the air when the air passes through the through groove, thereby lowering the air temperature.

[0007] As a preferred embodiment, the tray, heat-conducting plate, and airflow fins are an integrated structure made of passivated AL6030 aluminum alloy, which has good thermal conductivity and heat radiation capabilities.

[0008] As a preferred embodiment, the component configuration disk has a convection groove extending to the end face of the heat-conducting plate on the inner bottom surface of the mounting groove; the end face of the component configuration disk facing the air-collecting tube has a connecting hole that extends into the mounting groove, through which a connector passes to fix the electronic components in the mounting groove.

[0009] As a preferred embodiment, side plates are fixedly connected to both the left and right sides of the air-collecting duct, and a sealing plate is fixedly connected between the two side plates. The sealing plate is divided into upper and lower groups. The upper heat-absorbing coil is located in the space enclosed between the two upper sealing plates and the two side plates; the lower heat-absorbing coil is located in the space enclosed between the two lower sealing plates and the two side plates. The heat-conducting plate is adapted to be embedded in the space enclosed by the two side plates and the two paired sealing plates to prevent the component configuration plate from moving.

[0010] As a preferred embodiment, one end of the heat absorption coil is a water inlet and the other end is a drain. The sealing plate is provided with a reinforcing ring, which is suitable for the water inlet and drain to pass through, facilitating the installation and restraint of the heat absorption coil and ensuring good stability.

[0011] As a preferred embodiment, the end cap includes an embedded limiting plate located within the air-gathering duct, one end of which has a connecting plate, and the air intake grille extends from the surface of the connecting plate to the surface of the embedded limiting plate, allowing air to enter the air-gathering duct and preventing larger debris from entering the air-gathering duct.

[0012] As a preferred embodiment, the connecting plate has bolt holes on the portion outside the air duct, allowing bolts to pass through and be fixedly connected to the inverter housing.

[0013] As a preferred embodiment, the fan includes a fan shroud fixedly connected to the air duct. One end of the fan shroud is open, and the other end has an air inlet slot. A motor is also fixedly connected to the other end of the fan shroud. The output end of the motor is fixedly connected to fan blades for actively pushing air to generate airflow.

[0014] Compared with the prior art, the beneficial effects of this application are as follows:

[0015] (1) By setting up a heat absorption coil structure between the air duct and the component configuration plate, the temperature of the air entering the component configuration plate is actively reduced by water cooling, so that the air cooling efficiency is less affected by the ambient temperature, thereby achieving more efficient heat dissipation and cooling.

[0016] (2) By designing a flow guide fin structure for the component configuration disk and embedding it between the parallel tubes of the heat absorption coil, the heat absorption coil can efficiently remove the heat from the flow guide fins, keeping the flow guide fins at a low temperature, thereby allowing the air passing through the through holes of the flow guide fins to cool down quickly, maintaining a large temperature difference with the heat-generating element in operation, and maintaining an efficient and stable heat dissipation effect. Attached Figure Description

[0017] Figure 1 This is a three-dimensional structural diagram of the passivation heat sink for the inverter.

[0018] Figure 2 This is a three-dimensional cross-sectional view of the passivation heat sink of the inverter.

[0019] Figure 3 A three-dimensional structural diagram showing the combination of the component configuration panel and the air collection tube for the passivation heat sink of the inverter.

[0020] Figure 4 This diagram shows the configuration of the heat absorption coils of the inverter's passivation radiator above and below the air collection tube.

[0021] Figure 5 This is a three-dimensional structural diagram showing the connection between the side plate and the sealing plate of the passivation heat sink of the inverter and the air collection tube.

[0022] Figure 6 This is a three-dimensional cross-sectional view of the air duct of the passivation heat sink for the inverter.

[0023] Figure 7 This is a three-dimensional structural diagram of the fan of the passivation heat sink of the inverter.

[0024] Figure 8 This is a three-dimensional cross-sectional view of the heat absorption coil and the air collection tube of the passivation heat sink of the inverter.

[0025] Figure 9 This is a three-dimensional cross-sectional view of the connection between the side plate and the cover plate of the passivation heat sink of the inverter and the air duct.

[0026] Figure 10 A three-dimensional structural diagram of the component configuration panel for the passivation heat sink of the inverter.

[0027] Figure 11 A first three-dimensional cross-sectional view of the component configuration panel for the passivation heat sink of the inverter.

[0028] Figure 12 A second three-dimensional cross-sectional view of the component configuration disk for the passivation heat sink of the inverter.

[0029] Figure 13 This is a three-dimensional structural diagram of the end cover of the passivation heat sink for the inverter.

[0030] Figure 14 This is a three-dimensional structural diagram of the heat absorption coil of the passivation heat sink for the inverter.

[0031] In the diagram: 1. End cap; 101. Connecting plate; 102. Embedded limiting plate; 103. Air intake grille; 104. Bolt hole; 2. Component configuration tray; 201. Tray; 202. Connecting hole; 203. Heat conduction plate; 204. Guide fins; 205. Mounting groove; 206. Convection groove; 207. Through groove; 3. Side plate; 4. Sealing plate; 401. Reinforcing ring; 5. Heat absorption coil; 501. Water inlet end; 502. Drain end; 6. Fan; 601. Fan cover; 602. Air inlet groove; 603. Motor; 604. Fan blade; 7. Concentrator; 701. Air delivery groove. Detailed Implementation

[0032] The present application will be further described below with reference to specific embodiments. It should be noted that, without conflict, the various embodiments or technical features described below can be arbitrarily combined to form new embodiments.

[0033] In the description of this application, it should be noted that the directional terms such as "center", "lateral", "longitudinal", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", and "counterclockwise" indicate the orientation and positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this application and simplifying the description, 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. They should not be construed as limiting the specific protection scope of this application.

[0034] It should be noted that the terms "first," "second," etc., in the specification and claims of this application are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence.

[0035] The terms “comprising” and “having”, and any variations thereof, in the specification and claims of this application are intended to cover non-exclusive inclusion, for example, a process, method, system, product, or device that includes a series of steps or units is not necessarily limited to those steps or units that are explicitly listed, but may include other steps or units that are not explicitly listed or that are inherent to such process, method, product, or device.

[0036] like Figure 1-14The inverter passivation heat sink shown includes an air-collecting duct 7 open at both ends. The air-collecting duct 7 is rectangular, and air delivery slots 701 penetrating the inner and outer walls are opened at the top and bottom of the air-collecting duct 7. Air flows upward in the upper air delivery slot 701 and downward in the lower air delivery slot 701. Component configuration trays 2 are respectively arranged above and below the air-collecting duct 7, both used to install the electronic components inside the inverter. The component configuration tray 2 has through slots 207 penetrating the upper and lower surfaces to allow cold air to pass through. The component configuration tray 2 is only used to house the internal electronic components of the inverter on the end face away from the air-collecting duct 7. The specific structure of the component configuration tray 2 includes a tray 201. The end face of the tray 201 away from the air-collecting duct 7 has a mounting slot 205, in which the electronic components are fixed. The tray 201 faces the air-collecting duct 7. The end face of the air duct 7 has a heat-conducting plate 203, which can efficiently conduct heat. The end face of the heat-conducting plate 203 facing away from the tray 201 has several guide fins 204. The number and position of the through grooves 207 correspond to the guide fins 204. The through grooves 207 extend from the end face of the guide fins 204 into the mounting groove 205. The tray 201, the heat-conducting plate 203 and the guide fins 204 are an integral structure made of passivated AL6030 aluminum alloy material, which has good thermal conductivity and thermal radiation capacity. Passivation refers to the shrinkage and expansion of the oxide film caused by combining the traditional aluminum flux welding technology with multiple water washing, thereby promoting the gradual discharge of impurities or ions in the oxide layer, thereby reducing the ion precipitation of the radiator, improving its corrosion resistance and oxidation resistance, and extending its service life.

[0037] The component configuration tray 2 has a convection groove 206 extending to the end face of the heat conduction plate 203 on the inner bottom surface of the mounting groove 205. All the through grooves 207 are divided into two groups and are symmetrical about the convection grooves 206. The end face of the component configuration tray 2 facing the air concentrator 7 has a connecting hole 202 that extends into the mounting groove 205, through which the connector passes to fix the electronic components inside the inverter, such as circuit boards, electromagnetic coils and other structures, in the mounting groove 205 of the tray 201.

[0038] Each component configuration plate 2 is equipped with a heat absorption coil 5 between itself and the air concentrator 7. The heat absorption coil 5 is formed into multiple parallel tube sections through multiple bends. Cooling water is circulated inside the heat absorption coil 5. All guide fins 204 are located between parallel and adjacent tube sections of the heat absorption coil 5, so that the heat absorption coil 5 can efficiently absorb heat from the air around the guide fins 204. Side plates 3 are fixedly connected to the left and right sides of the air concentrator 7, and sealing plates 4 are fixedly connected between the two side plates 3. The sealing plates 4 are divided into upper and lower groups, with two in each group. The upper heat absorption coil 5 is located between the two upper sealing plates 4 and the two side plates 3. The heat absorption coil 5 is located within the space enclosed by the two lower sealing plates 4 and the two side plates 3. This shields the heat absorption coil 5, preventing dust accumulation and affecting heat absorption efficiency. The heat conduction plate 203 is embedded in the space enclosed by the two side plates 3 and the two pairs of sealing plates 4. One end of the heat absorption coil 5 is the water inlet 501, and the other end is the drain 502, which are connected to the output and input ends of the external cooling circulation equipment, respectively. The sealing plate 4 is equipped with a reinforcing ring 401 for the water inlet 501 and the drain 502 to pass through, and to maintain the stability of the entire heat absorption coil 5.

[0039] Both open ends of the air collecting duct 7 are provided with end caps 1. The air collecting duct 7 is fixedly connected to the inverter housing through the two end caps 1. The end cap 1 has an air intake grille 103. The specific structure of the end cap 1 includes an embedded limiting plate 102 located inside the air collecting duct 7. The end of the embedded limiting plate 102 facing away from the air collecting duct 7 has a connecting plate 101. The air intake grille 103 extends from the surface of the connecting plate 101 to the surface of the embedded limiting plate 102, forming a channel for air to flow. The part of the connecting plate 101 outside the air collecting duct 7 has bolt holes 104 for bolts to pass through and fix the end cap 1 to the inverter housing.

[0040] Fans 6 are installed at both the top and bottom of the air concentrator 7 to drive air and generate airflow. The fan 6 includes a shroud 601 fixedly connected to the air concentrator 7. One end of the shroud 601 is open and the other end has an air inlet slot 602. The other end of the shroud 601 is also fixedly connected to a motor 603. The output end of the motor 603 is fixedly connected to a fan blade 604. There are two sets of fans 6, two in each set. One set is located at the bottom of the air concentrator 7 and the other set is located at the bottom of the air concentrator 7.

[0041] Working principle: During operation, the fan blades 604 of the fan 6 push the air to generate airflow. The airflow enters the air-collecting tube 7 through the air intake grille 103, is drawn into the air shroud 601 through the air intake slot 602, and then passes through the air delivery slot 701 and the through slot 207. Because the cooling water flowing in the heat absorption coil 5 continuously absorbs the heat around the guide fins 204, the temperature of the airflow passing through the guide fins 204 will be relatively low. Thus, when the airflow cooled by the heat absorption coil 5 passes over the surface of the electronic components on the component configuration disk 2, the greater temperature difference allows it to carry away heat more efficiently, thereby maintaining the stability of the operating temperature of the electronic components. This active heat dissipation method is more controllable than passive heat dissipation.

[0042] The basic principles, main features, and advantages of this application have been described above. Those skilled in the art should understand that this application is not limited to the above embodiments. The embodiments and descriptions in the specification are merely the principles of this application. Various changes and modifications can be made to this application without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claims. The scope of protection claimed by this application is defined by the appended claims and their equivalents.

Claims

1. An inverter passivation heat sink, characterized in that: The system includes an air-collecting duct (7) with open ends. The top and bottom of the air-collecting duct (7) are provided with air delivery slots (701) that penetrate the inner and outer walls. Component configuration disks (2) are respectively arranged above and below the air-collecting duct (7). Each component configuration disk (2) has a through slot (207) that penetrates its upper and lower surfaces. The end face of the component configuration disk (2) facing away from the air-collecting duct (7) is suitable for arranging the internal electronic components of the inverter. A heat-absorbing coil (5) is provided between each component configuration disk (2) and the air-collecting duct (7). The heat coil (5) is suitable for flowing cooling water. Both open ends of the air collecting tube (7) are provided with end caps (1). The end caps (1) are provided with air inlet grilles (103). The top and bottom of the air collecting tube (7) are provided with fans (6) to drive air and generate airflow. The airflow enters the air collecting tube (7) through the air inlet grille (103), and is cooled by the heat absorption coil (5) through the air delivery slot (701) and the through slot (207) before passing over the surface of the electronic components on the component configuration plate (2).

2. The inverter passivation heat sink as described in claim 1, characterized in that: The component configuration tray (2) includes a tray (201). The tray (201) has an installation groove (205) on its end face away from the air duct (7). The tray (201) has a heat-conducting plate (203) on its end face facing the air duct (7). The heat-conducting plate (203) has a plurality of flow-guiding fins (204) on its end face away from the tray (201). All the flow-guiding fins (204) are located between parallel and adjacent tubes of the heat-absorbing coil (5). The through groove (207) extends from the end face of the flow-guiding fins (204) into the installation groove (205).

3. The inverter passivation heat sink as described in claim 2, characterized in that: The tray (201), heat-conducting plate (203), and air-guiding fins (204) are an integral structure made of passivated AL6030 aluminum alloy.

4. The inverter passivation heat sink as described in claim 3, characterized in that: The component configuration disk (2) has a convection groove (206) extending to the end face of the heat conduction plate (203) on the inner bottom surface of the mounting groove (205); the component configuration disk (2) has a connecting hole (202) that extends into the mounting groove (205) on the end face of the concentrator (7).

5. The inverter passivation heat sink as described in claim 2, characterized in that: The left and right sides of the air-collecting duct (7) are fixedly connected with side plates (3), and the two side plates (3) are fixedly connected with sealing plates (4). The sealing plates (4) are divided into upper and lower groups. The upper heat-absorbing coil (5) is located in the space enclosed between the two upper sealing plates (4) and the two side plates (3); the lower heat-absorbing coil (5) is located in the space enclosed between the two lower sealing plates (4) and the two side plates (3); the heat-conducting plate (203) is adapted to be embedded in the space enclosed by the two side plates (3) and the two pairs of sealing plates (4).

6. The inverter passivation heat sink as described in claim 5, characterized in that: One end of the heat absorption coil (5) is the water inlet (501) and the other end is the drain (502). The sealing plate (4) is provided with a reinforcing ring (401) which is suitable for the water inlet (501) and the drain (502) to pass through.

7. The inverter passivation heat sink as described in any one of claims 1 to 6, characterized in that: The end cap (1) includes an embedded limiting plate (102) located within the air duct (7), one end of the embedded limiting plate (102) having a connecting plate (101), and the air intake grille (103) extending from the surface of the connecting plate (101) to the surface of the embedded limiting plate (102).

8. The inverter passivation heat sink as described in claim 7, characterized in that: The connecting plate (101) has bolt holes (104) on the portion outside the air-collecting duct (7).

9. The inverter passivation heat sink as described in claim 8, characterized in that: The fan (6) includes a fan cover (601) fixedly connected to the air duct (7). One end of the fan cover (601) is open and the other end is provided with an air inlet slot (602). The other end of the fan cover (601) is also fixedly connected to a motor (603). The output end of the motor (603) is fixedly connected to a fan blade (604).

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