High-protection inverter

Abstract

The utility model relates to a high protection inverter, which comprises an inverter shell, a radiator, a main circuit and a control circuit, the main circuit and the control circuit are arranged in the inverter shell, the inverter shell is provided with a first opening, and the projection of the first opening on at least one first plane is encircled to form an area. The area ratio of the first opening to the projection area of the inverter shell in the first plane is larger than 90%, and the included angle between the vertical line of the first plane and the plane formed by any three points on the first opening is larger than 85 degrees; the main circuit is arranged on the heat absorption surface of the radiator and forms a main loop assembly with the radiator, and the control circuit is arranged in the inverter shell and forms a control loop assembly with the inverter shell. Compared with the prior art, the utility model has the advantages of internal condensation resistance and the like.

Description

TECHNICAL FIELD

[0001] The utility model relates to inverter field especially is concerned with a high protection inverter. BACKGROUND

[0002] Because inverter is big in heat generation, therefore generally all are equipped with heat dissipation module, in the prior art, the heat of each heat unit is transmitted to the radiator through the heat pipe in the inverter, in order to reduce the interference of electromagnetic signal, and ensure that the heat dissipation is sufficient, often will lead to having bigger cavity inside.

[0003] Because of the existence of these cavities, easy to produce condensation, thereby need to set up initial particle inside, increase the volume of inverter. INNOVATION CONTENT

[0004] The utility model discloses a kind of high protection inverters, by design main loop component and control loop component, main loop is arranged on radiator, and set enough large bottom surface, so that finally entire inverter only has first opening edge one connection interface, and the protection performance is high, and the height of internal cavity can be reduced, the ability of resisting internal condensation is strong, without additional internal dehumidification particle, high stability.

[0005] The purpose of the utility model can be realized by the following technical solutions:

[0006] A kind of high protection inverter, including inverter shell, with radiator and main circuit, control circuit arranged in inverter shell, first opening is provided on the inverter shell, the area surrounded by the projection of the first opening on at least one first plane is greater than 90% than the area of the projection area of inverter shell in the first plane, wherein the angle between the perpendicular line of the first plane and the plane formed by any three points on the first opening is greater than 85 degrees;

[0007] The main circuit is arranged on the heat absorption surface of radiator, and forms main loop component with radiator,

[0008] The control circuit is arranged in inverter shell, and forms control loop component with inverter shell,

[0009] Electric connection pin is provided on the control circuit, and electric connection jack matched with the electric connection pin is provided on the main circuit, after main loop component and control loop component, the electric connection pin is inserted into the electric connection jack through the first opening.

[0010] The radiator is fin radiator.

[0011] The inverter shell is metal shell.

[0012] The inverter shell is a cuboid with a missing bottom surface, wherein the bottom surface is a surface with the largest area of the cuboid.

[0013] The distance between the two bottom surfaces of the cuboid is less than one third of the diagonal length of the bottom surface.

[0014] The control circuit is integrated on a control PCB circuit board, and the base surface of the control PCB circuit board is parallel to the bottom surface.

[0015] The inverter shell is a heat-absorbing surface of a heat sink and an inverter shell after splicing to form a closed container.

[0016] The main loop assembly is filled with high-thermal-conductivity thermal silica gel, and the control loop assembly is filled with low-thermal-conductivity silica gel.

[0017] The heat sink comprises a heat sink shell and water inlet pipe joints and water outlet pipe joints arranged on the heat sink shell, one bottom surface of the heat sink shell serves as a heat-absorbing surface, a plurality of heat dissipation fins are arranged in the heat sink shell, two ends of the heat dissipation fins are connected to the inner sides of the two bottom surfaces to form heat dissipation flow channels, and the output end of the water inlet pipe joint and the input end of the water outlet pipe joint are connected to the heat dissipation fins.

[0018] The water inlet pipe joint and the water outlet pipe joint are connected to two opposite side surfaces of the heat sink shell.

[0019] Compared with the prior art, the inverter has the following beneficial effects:

[0020] 1. The main loop assembly and the control loop assembly are designed, the main loop is arranged on the heat sink, and a large enough bottom surface is arranged, so that finally the entire inverter has only one connecting interface at the edge of the first opening, the protection performance is high, the height of the internal cavity can be reduced, the anti-condensation ability is strong, no additional internal dehumidification particles are needed, and the stability is high.

[0021] 2. Two assemblies are respectively filled with glue, the external heat dissipation surface is different according to the heat dissipation requirement, the main loop assembly is configured to be heat dissipated by the heat sink, the control loop assembly is configured to be heat dissipated by the metal shell, the distance between the two bottom surfaces of the cuboid is less than one third of the diagonal length of the bottom surface, and no heat pipe needs to be arranged inside, so that the anti-condensation effect is improved.

[0022] 3. The water inlet pipe joint and the water outlet pipe joint are connected to two opposite side surfaces of the heat sink shell, the heat dissipation flow channels formed by the heat dissipation fins are combined, the flow area of the heat dissipation liquid is increased, and the utilization rate of the heat dissipation liquid is higher. BRIEF DESCRIPTION OF DRAWINGS

[0023] Figure 1 The structure of the utility model is shown in the figure;

[0024] Figure 2 Figure 1 is a structural schematic diagram of the heat radiator of the present application;

[0025] Figure 3 Figure 2 is a schematic diagram of the heat flow channel of the present application;

[0026] Wherein: 1, control loop assembly, 2, main loop assembly, 1-1, electric connection pin, 2-1, water inlet pipe joint, 2-2, water outlet pipe joint, 2-3, heat dissipation fin, 2-4, heat flow channel. DETAILED DESCRIPTION

[0027] The present application will be described in detail below with reference to the drawings and specific embodiments. The present embodiment is implemented on the premise of the technical scheme of the present application, and detailed implementation modes and specific operation processes are given, but the protection scope of the present application is not limited to the following embodiments.

[0028] It should be noted that: similar labels and letters represent similar items in the following drawings, therefore, once an item is defined in one drawing, it does not need to be further defined and explained in the subsequent drawings.

[0029] In the description of the present application, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the present application. In addition, the terms "proximal end", "distal end", "third" are only for description purposes and cannot be understood as indicating or implying relative importance. Physical quantities in the formula, such as no separate marking, should be understood as the basic quantity of the basic unit of the International System of Units, or the derived quantity derived from the basic quantity by multiplication, division, differentiation or integration, etc. Mathematical operation.

[0030] In addition, the terms "horizontal", "vertical", "overhanging" and the like do not mean that the components must be absolutely horizontal or overhanging, but can be slightly inclined. For example, "horizontal" only means that its direction is relatively more horizontal than "vertical", and does not mean that the structure must be completely horizontal, but can be slightly inclined.

[0031] In the description of the utility model, still need explaining, unless another explicit provision and limitation, term '' install '' '' link '' '' connection '' should do broad sense understanding, for example, can be fixed connection, also can be detachable connection, or integrally connected;Can be mechanical connection, also can be electrical connection;Can be directly connected, also can pass through intermediate medium indirectly connected, can be two element inside intercommunication.For ordinary skilled person in the art, can understand the concrete meaning of above-mentioned term in the utility model according to specific circumstances.

[0032] A kind of high protection inverter, including inverter shell, such as Figure 1 As shown, with radiator and main circuit, control circuit arranged in inverter shell, inverter shell is equipped with first opening, the area surrounded by the projection of first opening in at least one first plane, the area ratio of the projection area of inverter shell in first plane is greater than 90%, wherein, the included angle between the perpendicular line of first plane and the plane formed by any three points on first opening is greater than 85 degrees;

[0033] Main circuit is arranged on the heat-absorbing surface of radiator, and with radiator constitutes main loop assembly 2,

[0034] Control circuit is arranged in inverter shell, and with inverter shell constitutes control loop assembly 1,

[0035] Electric connection pin 1-1 is arranged on control circuit, and electric connection jack that cooperates with electric connection pin 1-1 is arranged on main circuit, after main loop assembly 2 and control loop assembly 1, electric connection pin 1-1 is inserted into electric connection jack through first opening.

[0036] By designing main loop assembly 2 and control loop assembly 1, main loop is arranged on radiator, and enough large bottom surface is set, so that finally entire inverter has only one connection interface of first opening edge, and the height of internal cavity can be reduced, and the ability of resisting internal condensation is strong, without additional internal dehumidification particles, and the stability is high.

[0037] Generally, radiator is fin radiator, for example, such as Figure 2 And Figure 3As shown, the radiator includes a radiator shell and water inlet pipe joint 2-1, water outlet pipe joint 2-2 provided on the radiator shell, one bottom surface of the radiator shell as a heat absorption surface, a plurality of heat dissipation fins 2-3 provided in the radiator shell, both ends of the heat dissipation fins 2-3 are connected to the inner sides of the two bottom surfaces to form a heat dissipation flow channel 2-4, the output end of the water inlet pipe joint 2-1 and the input end of the water outlet pipe joint 2-2 are connected with the heat dissipation fins 2-3, the water inlet pipe joint 2-1 and the water outlet pipe joint 2-2 are connected on two opposite sides of the radiator shell, combined with the heat dissipation flow channel 2-4 formed by the heat dissipation fins 2-3, the flow area of the heat dissipation liquid is increased, so that the utilization rate of the heat dissipation liquid is higher, and the heat dissipation is realized by connecting the water inlet pipe joint 2-1 and the water outlet pipe joint 2-2 with the cooling liquid circulating unit. The cooling liquid can be a liquid or a gas. Figure 3 As shown, the cooling flow channel forms a winding part, thereby increasing the flow area of the heat dissipation liquid. Of course, in some other embodiments, the design of the heat dissipation flow channel 2-4 formed by the parallel connection of a plurality of heat dissipation channels can also be used.

[0038] In some embodiments, air-cooled radiators and other methods can also be used. The specific heat dissipation method needs to be determined according to the overall power compliance.

[0039] In this embodiment, the inverter shell is a metal shell, and the inverter shell is a long rectangular parallelepiped with one bottom surface missing. Among them, the bottom surface is the surface with the largest area of the rectangular parallelepiped, and the distance between the two bottom surfaces of the rectangular parallelepiped is less than one-third of the diagonal length of the bottom surface. The main circuit assembly 2 is filled with high-conductivity thermal silicone, and the control circuit assembly 1 is filled with low-conductivity thermal silicone. Two assemblies are filled with glue respectively, according to the different external heat dissipation surfaces of the heat dissipation demand, the main circuit assembly 2 is configured to dissipate heat by the radiator, and the control circuit assembly 1 is configured to dissipate heat by the metal shell. The distance between the two bottom surfaces of the rectangular parallelepiped is less than one-third of the diagonal length of the bottom surface, and there is no need to set a heat pipe inside, thereby improving the anti-condensation effect.

[0040] The control circuit is integrated on the control PCB circuit board, and the base surface of the control PCB circuit board is parallel to the bottom surface.

[0041] The inverter shell is the heat absorption surface of the radiator, and the inverter shell and the radiator are spliced to form a sealed container.

[0042] The structure of the main circuit and the control circuit is not different from the prior art. Among them, the heat generating elements of the main circuit mainly include power devices, including IGBT, MOS, inductor, etc., so they are not described again.

Claims

1. A high-protection inverter, comprising an inverter housing, a heat sink, and a main circuit and a control circuit arranged in the inverter housing, characterized in that: The inverter housing is provided with a first opening, and the ratio of the area enclosed by the projection of the first opening on at least one first plane to the area of ​​the inverter housing projected on the first plane is greater than 90%, wherein the angle between the perpendicular to the first plane and the plane formed by any three points on the first opening is greater than 85 degrees; The main circuit is arranged on the heat absorbing surface of the radiator and forms a main circuit assembly with the radiator. The control circuit is arranged in the inverter housing and forms a control circuit assembly with the inverter housing. The control circuit is provided with an electrical connection pin, and the main circuit is provided with an electrical connection jack that cooperates with the electrical connection pin. After the main circuit assembly and the control circuit assembly are completed, the electrical connection pin passes through the first opening and is inserted into the electrical connection jack.

2. The high protection inverter according to claim 1, characterized in that: The radiator is a fin radiator.

3. The high protection inverter according to claim 1, characterized in that: The inverter housing is a metal housing.

4. The high protection inverter according to claim 1, characterized in that: The inverter housing is a cuboid with a missing bottom surface, wherein the bottom surface is a surface with the largest area of ​​the cuboid.

5. The high protection inverter according to claim 4, characterized in that: The distance between the two bottom surfaces of the cuboid is less than one third of the diagonal length of the bottom surfaces.

6. The high protection inverter according to claim 4, characterized in that: The control circuit is integrated on a control PCB circuit board, and the base surface of the control PCB circuit board is parallel to the bottom surface.

7. The high protection inverter according to claim 1, characterized in that: The inverter housing is a sealed container formed by splicing the heat absorbing surface of the radiator and the inverter housing.

8. The high protection inverter according to claim 1, characterized in that: The main circuit component is filled with high thermal conductivity silica gel, and the control circuit component is filled with low thermal conductivity silica gel.

9. The high protection inverter according to claim 1, characterized in that: The radiator includes a radiator shell and a water inlet pipe joint and a water outlet pipe joint arranged on the radiator shell. One bottom surface of the radiator shell serves as a heat absorption surface. A plurality of heat dissipation fins are arranged in the radiator shell. The two ends of the heat dissipation fins are respectively connected to the inner sides of the two bottom surfaces to form a heat dissipation flow channel. The output end of the water inlet pipe joint and the input end of the water outlet pipe joint are both connected to the heat dissipation fins.

10. The high protection inverter according to claim 9, characterized in that: The water inlet pipe joint and the water outlet pipe joint are connected to two opposite side surfaces of the radiator housing.

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