High-power inverter and inverter shell
By designing the inverter housing, combining active and passive heat dissipation methods, and installing heat dissipation fins and embedded heat dissipation fans on the outside of the housing, the heat dissipation and waterproofing problems of existing high-power inverters during outdoor use, achieving better heat dissipation and equipment protection.
Patent Information
- Application Number
- CN202421782259.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-07-25
- Publication Date
- 2025-06-13
- Estimated Expiration
- 2034-07-25
AI Technical Summary
Existing high-power inverters cannot meet the weather resistance requirements such as rainproof when used outdoors, and the heat dissipation effect is insufficient, which can easily lead to overheating and damage to the equipment.
An inverter housing is designed, combining active and passive heat dissipation methods. The outside of the housing is equipped with heat dissipation fins and an axial flow heat dissipation fan is embedded. A sealed back plate is provided on the back to form a sealed housing, which enhances the heat dissipation effect and prevents water inlet.
It realizes effective heat dissipation and waterproofing during outdoor use, extends the service life of the equipment, and improves the heat dissipation performance.
Smart Images
Figure CN222981869U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the field of inverters, and particularly to a high-power inverter and an inverter housing. Background Art
[0002] An inverter is used to convert direct current into alternating current. During the conversion process, due to the characteristics of power devices themselves, heat will be generated. When a high-power inverter is continuously used, if the heat accumulation is not dissipated in time, it may cause overheating and damage to the equipment. Existing high-power inverters will have hollowed-out ends on the outer shell and set up fans to directly blow air on the components to reduce the temperature. This kind of outer shell structure is suitable for use in enclosed environments such as inside a vehicle or indoors, and cannot meet the weather resistance requirements such as rain protection outdoors. Summary of the Utility Model
[0003] The utility model aims to at least solve one of the technical problems in the above technologies to a certain extent. For this reason, the first object of the utility model is to propose an inverter housing, which is airtight while ensuring the heat dissipation effect, and reduces the possibility of water ingress.
[0004] The second object of the utility model is to propose a high-power inverter.
[0005] To achieve the above object, the first embodiment of the utility model proposes an inverter housing, including:
[0006] A cover body: the outer surface forms heat dissipation fins, several mounting holes are provided on the bottom surface, an active heat dissipation component is provided on the front surface, and the back surface is open for components to be placed in;
[0007] The active heat dissipation component: includes at least two axial-flow cooling fans, and the axial-flow cooling fans are embedded in the heat dissipation fins; the air flow direction points to or away from the front surface of the cover body;
[0008] A back plate: is arranged on the back surface of the cover body, and forms an airtight housing in combination with the cover body; the part of the cover body in contact with the back plate is recessed to form a sealing groove for placing a sealing ring.
[0009] According to the inverter housing of the embodiment of the utility model, heat dissipation fins are provided outside the cover body, and the active heat dissipation component is embedded in the heat dissipation fins, realizing the combination of active and passive heat dissipation. Usually, passive heat dissipation is carried out through the heat dissipation fins, and when needed, the active heat dissipation component is turned on to provide better heat dissipation performance.
[0010] In addition, according to an inverter housing proposed by the above embodiment of the utility model, the following additional technical features may also be provided:
[0011] Optionally, the heat dissipation fins are provided on the front surface and both side surfaces of the cover body; the heat dissipation fins provided on the front surface are arranged vertically, and the heat dissipation fins on both side surfaces are arranged horizontally.
[0012] Optionally, the cooling fans are arranged side by side on the same horizontal plane.
[0013] Furthermore, for adjacent cooling fans, the air inlet and outlet directions are opposite.
[0014] To achieve the above object, a second embodiment of the present utility model provides a high-power inverter, which includes an inverter circuit and an inverter housing. The inverter housing includes a cover body: the outer surface forms heat dissipation fins, the bottom surface is provided with a plurality of mounting holes, the front surface is provided with an active heat dissipation component, and the back surface is open for components to be placed; the active heat dissipation component: includes at least two axial-flow cooling fans, and the axial-flow cooling fans are embedded in the heat dissipation fins; the air flow direction points to or away from the front surface of the cover body; a back plate: is arranged on the back surface of the cover body and forms a sealed housing in combination with the cover body; the part of the cover body in contact with the back plate is recessed to form a sealing groove for placing a sealing ring; the cooling fans are arranged side by side on the same horizontal plane; for adjacent cooling fans, the air inlet and outlet directions are opposite.
[0015] For the high-power inverter according to the embodiment of the present utility model, since the outer surface of the cover body of the inverter is provided with heat dissipation fins and the active heat dissipation component is embedded in the heat dissipation fins, active and passive heat dissipation are combined. Usually, passive heat dissipation is carried out through the heat dissipation fins, and when needed, the active heat dissipation component is turned on to provide better heat dissipation performance.
[0016] In addition, for a high-power inverter according to the above embodiment of the present utility model, it may also have the following additional technical features:
[0017] Optionally, the heat dissipation fins are arranged on the front surface and both side surfaces of the cover body; the heat dissipation fins arranged on the front surface are arranged vertically, and the heat dissipation fins on both side surfaces are arranged horizontally.
[0018] Optionally, the power components in the inverter circuit are attached to the inner surface of the cover body through a heat-conducting material. Description of the Drawings
[0019] Figure 1 It is a structural view of the inverter housing according to an embodiment of the present utility model;
[0020] Figure 2 It is a schematic diagram of the structural decomposition of a high-power inverter from one angle according to an embodiment of the present utility model;
[0021] Figure 3 It is a schematic diagram of the structural decomposition of a high-power inverter from another angle according to an embodiment of the present utility model.
[0022] Reference Numeral Explanation:
[0023] Cover body 1, Heat dissipation fins 11, Mounting holes 12, Sealing groove body 13
[0024] Active heat dissipation component 2
[0025] Backplane 3
[0026] Inverter circuit 100. Detailed implementation manners
[0027] Embodiments of the present utility model will be described in detail below. Examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to explain the present utility model, and should not be construed as limiting the present utility model.
[0028] For the high-power inverter of the present utility model, since heat dissipation fins are provided outside the cover of the inverter and the active heat dissipation component is embedded in the heat dissipation fins, active and passive heat dissipation are combined. Usually, passive heat dissipation is achieved through the heat dissipation fins. When needed, the active heat dissipation component is turned on to provide better heat dissipation performance.
[0029] To better understand the above technical solutions, exemplary embodiments of the present utility model will be described in more detail below with reference to the accompanying drawings. Although the exemplary embodiments of the present utility model are shown in the accompanying drawings, it should be understood that the present utility model can be implemented in various forms and should not be limited by the embodiments described herein. On the contrary, these embodiments are provided to enable a more thorough understanding of the present utility model and to fully convey the scope of the present utility model to those skilled in the art.
[0030] To better understand the above technical solutions, the above technical solutions will be described in detail below in combination with the accompanying drawings of the specification and specific implementation manners.
[0031] As a circuit structure for AC-DC conversion, an inverter generates heat during operation. The actual input power of a common in-vehicle inverter is within 500W and it operates in an environment with an air conditioner in the vehicle. Therefore, only passive heat dissipation through the outer shell is sufficient. Some also adopt a heat dissipation method with hollowed-out ends and a fan, but this structure cannot be safely used in an outdoor environment due to the openings in the housing.
[0032] Figure 1 and Figure 2 A high-power inverter according to an embodiment of the present utility model includes an inverter circuit 100 and an inverter housing. The inverter housing includes a cover 1, a backplane 3, and an active heat dissipation component 2. The inverter circuit 100 is placed in the inverter housing, and the power components are attached to the inner surface of the cover 1, and heat dissipation is achieved through the overall inverter housing. The specific structure of the inverter housing is as follows:
[0033] Figure 3An inverter housing according to an embodiment of the present utility model includes: a cover body 1, on the outer surface of which heat dissipation fins 11 are formed, a plurality of mounting holes 12 are provided on the bottom surface, and an active heat dissipation component 2 is provided on the front surface, and the back surface is open for components to be placed; the heat dissipation fins 11 can be vertical, can be bent in various directions, or branch fins can be provided on the fin body. In this way, under the condition of unchanged external dimensions, the heat dissipation fins 11 have a larger surface area, improving the heat dissipation effect.
[0034] Specifically, the heat dissipation fins 11 are provided on the front surface and both side surfaces of the cover body 1; the heat dissipation fins 11 provided on the front surface are arranged in the vertical direction, and the heat dissipation fins 11 on both side surfaces are arranged in the horizontal direction. Adopting this layout can better accelerate the drainage speed, enabling the housing of the embodiment of the present utility model to better adapt to the outdoor working environment.
[0035] The active heat dissipation component 2 includes at least two axial flow cooling fans, and the axial flow cooling fans are embedded in the heat dissipation fins 11; the air flow direction points to or away from the front surface of the cover body 1; arranged in cooperation with the heat dissipation fins 11 of the cover body 1, it can provide a flexibly variable heat dissipation capacity.
[0036] Specifically, the heat dissipation fins 11 are locally concave to form a space for placing the cooling fans. Screw copper posts are provided between the cooling fans and the cover body 1 to keep a certain distance between the cooling fans and the surface of the cover body 1, providing a space for air flow. A flat plate for blocking the fan structure is arranged on the outside to further define the air flow direction brought by the cooling fans; small holes for the power supply and control lines of the cooling fans to pass through are also provided on the cover body 1, and the small holes are waterproofed.
[0037] A back plate 3 is provided on the back surface of the cover body 1 and forms a sealed housing in combination with the cover body 1; the part of the cover body 1 in contact with the back plate 3 is recessed to form a sealing groove body 13 for placing a sealing ring.
[0038] For the inverter housing of the embodiment of the present utility model, most of the input and output interfaces are arranged on the bottom surface of the cover body 1. Therefore, when used outdoors, rainwater will not directly flow into the interior through the interfaces. Compared with the existing inverter housing structure, it can better adapt to the outdoor working environment;
[0039] Relying on the arrangement of the heat dissipation fins 11 of the cover body 1 itself, the heat dissipation effect can be achieved. When the external environmental temperature rises or the inverter working load is maintained at a relatively high level, the active heat dissipation component 2 is turned on to provide an air flow directly blowing on the cover body 1, greatly accelerating the air flow speed passing through the heat dissipation fins 11, thus improving the heat dissipation capacity of the entire cover body 1.
[0040] Specifically, the cooling fans are arranged side by side on the same horizontal plane. By adopting this solution, the airflow provided by the fans can be effectively utilized to accelerate the flow rate of the local airflow and enhance the local heat dissipation capacity. Since the heat generation areas inside the inverter are uneven and some power components generate a large amount of heat, during design and production, these power components with large heat generation are attached to the areas where the active heat dissipation component 2 and the heat dissipation fins 11 provide the maximum heat dissipation efficiency, so as to achieve the best overall heat dissipation effect.
[0041] In some embodiments, for adjacent cooling fans, the air inlet and outlet directions are opposite. In this solution, when a matrix structure composed of multiple cooling fans is formed, by designing the direction of the airflow channel formed by the cooling fans, the heat dissipation efficiency of the local area can be further improved. Combined with the arrangement of the power components mentioned above, a better heat dissipation effect can be provided under the same setting of the housing 1, or for the same heat dissipation effect, the housing 1 structure of the embodiment of the present utility model can be made smaller and thinner.
[0042] In the description of the present utility model, it should be understood that the orientation or positional relationship indicated by the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the present utility model.
[0043] In the present utility model, unless otherwise clearly specified and defined, the first feature being "above" or "below" the second feature may include direct contact between the first and second features, or may include the situation where the first and second features are not in direct contact but are in contact through other features therebetween. Moreover, the first feature being "above", "over" and "on" the second feature includes that the first feature is directly above and obliquely above the second feature, or merely indicates that the horizontal height of the first feature is higher than that of the second feature. The first feature being "below", "under" and "beneath" the second feature includes that the first feature is directly below and obliquely below the second feature, or merely indicates that the horizontal height of the first feature is lower than that of the second feature.
[0044] In the description of this specification, the descriptions referring to terms such as "one embodiment", "some embodiments", "examples", "specific examples", or "some examples", etc. mean that the specific features, structures, materials, or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present utility model. In this specification, the schematic expressions of the above terms should not be understood as necessarily referring to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described can be combined in a suitable manner in any one or more embodiments or examples. In addition, those skilled in the art can combine and combine the different embodiments or examples described in this specification.
[0045] Although the embodiments of the present utility model have been shown and described above, it can be understood that the above embodiments are exemplary and should not be construed as limiting the present utility model. Those of ordinary skill in the art can make changes, modifications, substitutions, and variations to the above embodiments within the scope of the present utility model.
Claims
1. Inverter housing, characterized by: include: Cover: The outer surface is formed with heat dissipation fins, the bottom is provided with a number of mounting holes, the front is provided with active heat dissipation components, and the back is open for components to be placed; Active heat dissipation assembly: including at least two axial flow heat dissipation fans, the axial flow heat dissipation fans are embedded in the heat dissipation fins; the airflow direction is directed toward or away from the front of the cover; Back plate: It is arranged on the back of the cover body and is combined with the cover body to form a closed shell; the part where the cover body contacts the back plate is recessed to form a sealing groove for placing the sealing ring.
2. The inverter housing according to claim 1, characterized in that: The heat dissipation fins are arranged on the front and two side surfaces of the cover body; the heat dissipation fins arranged on the front are arranged in a vertical direction, and the heat dissipation fins arranged on the two side surfaces are arranged in a horizontal direction.
3. The inverter housing according to claim 1, characterized in that: The cooling fans are arranged side by side on the same horizontal plane.
4. The inverter housing according to any one of claims 1 to 3, characterized in that: Adjacent cooling fans have opposite air inlet and outlet directions.
5. High power inverter, characterized by: include: An inverter circuit and an inverter housing, wherein the inverter housing comprises a cover body: the outer surface forms heat dissipation fins, the bottom surface is provided with a plurality of mounting holes, the front surface is provided with an active heat dissipation assembly, and the back surface is open for components to be placed; the active heat dissipation assembly comprises at least two axial flow heat dissipation fans, and the axial flow heat dissipation fans are embedded in the heat dissipation fins; the air flow direction points to or away from the front surface of the cover body; the back plate is arranged on the back surface of the cover body and combined with the cover body to form a closed housing; the part of the cover body that contacts the back plate is recessed to form a sealing groove body for placing a sealing ring; the heat dissipation fans are arranged side by side on the same horizontal plane; the air inlet and outlet directions of adjacent heat dissipation fans are opposite.
6. The high-power inverter according to claim 5, characterized in that: The heat dissipation fins are arranged on the front and two side surfaces of the cover body; the heat dissipation fins arranged on the front are arranged in a vertical direction, and the heat dissipation fins arranged on the two side surfaces are arranged in a horizontal direction.
7. The high-power inverter according to claim 5, characterized in that: The power components in the inverter circuit are attached to the inner surface of the cover through the heat conductive material.