Inverter convenient for heat dissipation

Abstract

The utility model relates to the technical field of inverters, and discloses an inverter convenient for heat dissipation, which comprises a side heat dissipation channel formed by circuit board frames, a shell and heat dissipation ports on two sides in sequence. The heat dissipation assembly comprises a first heat dissipation element and a second heat dissipation element which are arranged in the side heat dissipation channel, the first heat dissipation element and the second heat dissipation element are sequentially connected to the circuit board frame in a manner of being vertically arranged towards the heat dissipation opening, and the size of the second heat dissipation element is larger than that of the first heat dissipation element.

Description

TECHNICAL FIELD

[0001] The utility model relates to inverter technical field, concretely is an inverter convenient for heat dissipation. BACKGROUND

[0002] With the rapid development of modern electric power technology, as a kind of key electric power equipment that converts direct current into alternating current, inverter has been widely applied in renewable energy power generation system, industrial automation, electric vehicle charging and household electric power energy storage and many other fields. In the operation process of inverter, a large amount of energy heat is emitted along with the realization of core functions such as power conversion. If these heat cannot be dissipated in time and effectively, the temperature inside the inverter will rise, thereby affecting the normal use of power conversion components inside the inverter. Therefore, when installing the inverter, a heat dissipation structure is installed inside to maintain the inverter inside in a suitable temperature range and ensure the stable and efficient operation of each component.

[0003] The existing inverter heat dissipation structure still has some problems: generally, the equipment is provided with a heat dissipation port for natural heat dissipation through air convection. In addition, a fan is also often installed at the heat dissipation port to directly draw away the heat inside the shell by the operation of the fan. However, in actual design, the layout of power conversion components is often compact and irregular in shape. Such layout characteristics make the space occupied by them in the shell more complex, which easily hinders the smooth flow of heat dissipation air flow and causes local heat jamming. Once this situation occurs, heat will be concentrated and accumulated, which is difficult to be smoothly discharged from the heat dissipation port. Over a long period of time, heat continues to accumulate, which eventually has a negative impact on the normal use of power conversion components.

[0004] Therefore, there is an urgent need for an inverter convenient for heat dissipation to solve the above problems. UTILITY MODEL CONTENTS

[0005] Based on the above, the purpose of the utility model is to provide an inverter convenient for heat dissipation to solve the problem of heat concentration and accumulation.

[0006] In order to solve the above technical problems, the utility model adopts the following technical scheme: an inverter convenient for heat dissipation, comprising:

[0007] A shell;

[0008] An electric element arranged inside the shell, comprising a power conversion component and a circuit board frame, the circuit board frame is arranged on both sides of the power conversion component, and the power conversion component is installed on the circuit board frame;

[0009] A heat dissipation port arranged on the side surface of the shell, and the heat dissipation port is in communication with the inner cavity of the shell;

[0010] The middle heat dissipation channel is sequentially formed by the line board frame on both sides, the power conversion assembly in the middle, and the heat dissipation port.

[0011] The side heat dissipation channel is sequentially formed by the line board frame on both sides, the shell, and the heat dissipation port.

[0012] The heat dissipation assembly comprises a first heat dissipation element and a second heat dissipation element arranged in the side heat dissipation channel, and the first heat dissipation element and the second heat dissipation element are sequentially vertically arranged on the line board frame and connected to the heat dissipation port, and the volume of the second heat dissipation element is greater than that of the first heat dissipation element.

[0013] As a preferred scheme of the inverter facilitating heat dissipation, the heat dissipation assembly further comprises a positioning heat conduction pad, which is bonded between the first heat dissipation element and the line board frame, and between the second heat dissipation element and the line board frame.

[0014] As a preferred scheme of the inverter facilitating heat dissipation, the electric appliance element further comprises a fan, which is fixedly arranged in the middle heat dissipation channel, and the air outlet of the fan is arranged along one side of the line board frame and the power conversion assembly and faces the heat dissipation port to dissipate heat.

[0015] As a preferred scheme of the inverter facilitating heat dissipation, the heat dissipation assembly further comprises a third heat dissipation element, which is arranged between the second heat dissipation element and the air outlet of the fan, and is used to guide the heat of the second heat dissipation element to dissipate from the air outlet of the fan to the heat dissipation port.

[0016] As a preferred scheme of the inverter facilitating heat dissipation, the heat dissipation assembly further comprises a connecting heat conduction pad, which is arranged between the first heat dissipation element and the second heat dissipation element and is bonded to the line board.

[0017] As a preferred scheme of the inverter facilitating heat dissipation, the heat dissipation assembly further comprises a positioning assembly arranged on the inner wall of the shell, which is used to fix the heat dissipation assembly.

[0018] As a preferred scheme of the inverter facilitating heat dissipation, the positioning assembly comprises a positioning cylinder and an elastic member, the positioning cylinder is fixedly arranged on the inner wall of the shell, the elastic member is fixedly arranged in the positioning cylinder, the axial direction of the elastic member coincides with the axial direction of the heat dissipation assembly, and the elastic ends of the elastic member respectively abut against the inner wall of the positioning cylinder and the heat dissipation assembly.

[0019] As a preferred scheme of the inverter facilitating heat dissipation, the heat dissipation assembly further comprises a handle, which is rotatably connected to the surface of the shell and is used to carry or hang.

[0020] As a kind of preferred scheme of inverter convenient for heat dissipation, it further comprises a heat insulation component arranged on the inner wall of the shell opposite to the handle, so that the handle is prevented from being scalded when being hung on the surface of the shell for a long time.

[0021] As a kind of preferred scheme of inverter convenient for heat dissipation, the heat insulation component comprises a partition plate arranged on the inner wall of the shell opposite to the handle and an air gap between the partition plate and the inner wall of the shell.

[0022] The utility model discloses the beneficial effect is: through the line board frame and power conversion component build up middle heat dissipation channel, heat can be directly conducted to the heat dissipation opening from power conversion component to line board frame and spread;The side heat dissipation channel further expands the heat dissipation path with the shell and line board frame, and the heat dissipation area is increased. BRIEF DESCRIPTION OF DRAWINGS

[0023] Figure 1 The utility model provides a kind of overall structure schematic diagram of inverter convenient for heat dissipation provided by the utility model;

[0024] Figure 2 The utility model provides a kind of overall structure schematic diagram of inverter convenient for heat dissipation in the utility model without shell;

[0025] Figure 3 The utility model provides a kind of overall structure schematic diagram of inverter convenient for heat dissipation in the utility model and installs third heat dissipation element;

[0026] Figure 4 The utility model provides a kind of cross-sectional view of inverter convenient for heat dissipation in the utility model and installs heat insulation component;

[0027] Figure 5 The utility model provides a kind of overall structure schematic diagram of heat dissipation component in the utility model and installs inverter convenient for heat dissipation.

[0028] Wherein, the figure each reference sign: 1, shell; 2, electrical component; 3, circuit board frame; 4, fan; 5, heat dissipation port; 6, middle heat dissipation channel; 7, side heat dissipation channel; 8, heat dissipation assembly; 9, first heat dissipation element; 10, second heat dissipation element; 11, third heat dissipation element; 12, connecting heat-conducting pad; 13, positioning heat-conducting pad; 14, positioning assembly; 15, positioning cylinder; 16, elastic member; 17, handle; 18, heat insulation assembly; 19, partition; 20, empty space; 21, heat dissipation single fin. DETAILED DESCRIPTION

[0029] The utility model will be described in further detail below in combination with the drawings and examples. It can be understood that the specific examples described herein are only used to explain the utility model and are not limited to the utility model. In addition, it should be noted that only the parts related to the utility model are shown in the drawings for ease of description, not all the structures.

[0030] In the description of the utility model, unless otherwise explicitly specified and limited, the terms "connected", "connected", "fixed" should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or it can be integrated; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium; it can be the internal communication of two elements or the interaction relationship of two elements. For ordinary skilled in the art, the specific meaning of the above terms in the utility model can be understood according to the specific circumstances.

[0031] In the utility model, unless otherwise explicitly specified and limited, the first feature "on" or "below" the second feature can include that the first and second features are in direct contact, or that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, the first feature "on", "above" and "above" the second feature includes that the first feature is directly above and obliquely above the second feature, or only indicates that the horizontal height of the first feature is higher than that of the second feature. The first feature "below", "below" and "below" the second feature includes that the first feature is directly below and obliquely below the second feature, or only indicates that the horizontal height of the first feature is less than that of the second feature.

[0032] In the description of the embodiment, the terms "up", "down", "left", "right" and other orientation or position relationship are based on the orientation or position relationship shown in the drawings, only for the convenience of description and simplification of operation, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, therefore it cannot be understood as a limitation of the utility model.

[0033] In the description of the utility model, unless otherwise specified, the meaning of "multiple" is two or more than two. In addition, the terms "first", "second" are only used to distinguish in the description, and have no special meaning.

[0034] In an embodiment of the utility model, as shown in Figures 1-5 The utility model provides a heat dissipation convenient inverter, include: casing 1, electric element 2, heat dissipation mouth 5, middle heat dissipation channel 6, side heat dissipation channel 7 and heat dissipation subassembly 8.

[0035] Electric element 2, set up in the inside of casing 1, including power conversion subassembly and circuit board frame 3, and the circuit board frame 3 is erected in the both sides of power conversion subassembly, and power conversion subassembly is installed on circuit board frame 3;Heat dissipation mouth 5, set up in the side of casing 1, and heat dissipation mouth 5 is communicated with the inner chamber of casing 1;Middle heat dissipation channel 6, by the circuit board frame 3 of both sides, the power conversion subassembly of middle and heat dissipation mouth 5 sequentially constitute;Side heat dissipation channel 7, by the circuit board frame 3 of both sides, casing 1 and heat dissipation mouth 5 sequentially constitute;Heat dissipation subassembly 8, including the first heat dissipation element 9 and second heat dissipation element 10 that set up in side heat dissipation channel 7, and the first heat dissipation element 9 and second heat dissipation element 10 are sequentially vertically arranged and connect on the circuit board frame 3 to heat dissipation mouth 5, and the volume of second heat dissipation element 10 is greater than the volume of first heat dissipation element 9.

[0036] The utility model provides a heat dissipation convenient inverter, in the inside of casing 1, utilize circuit board frame 3 and power conversion subassembly and build up middle heat dissipation channel 6, and heat can be directly from power conversion subassembly to heat dissipation mouth 5 conduction dissipation from circuit board frame 3;While side heat dissipation channel 7 further expands the heat dissipation path with the help of casing 1 and circuit board frame 3, and the heat dissipation area is increased. Through the first heat dissipation element 9 and second heat dissipation element 10 of heat dissipation subassembly 8 are sequentially vertically arranged and connect on the circuit board frame 3 to heat dissipation mouth 5, and the volume of second heat dissipation element 10 is greater. When power conversion subassembly generates heat conduction to circuit board frame 3, first heat dissipation element 9 and second heat dissipation element 10 begin heat dissipation simultaneously, and first heat dissipation element 9 emits heat to the surrounding air, and makes local air temperature rise a little. Then, second heat dissipation element 10 not only receives more heat conduction of circuit board frame 3, but also guides the heat flow of first heat dissipation element 9 emitted to the air to itself, and diffuses to heat dissipation mouth 5 with the heat emitted to the surrounding air of itself and exports. Through the cooperative work of two heat dissipation elements, the gradient of heat transfer is formed, and heat is orderly discharged, effectively avoids the accumulation of heat in the local, makes the heat dissipation process more balanced and stable, significantly improves the heat dissipation performance of inverter as a whole, ensures that inverter can maintain lower internal temperature under long time high load operation state, and effectively prolongs the service life of inverter.

[0037] The core function of the inverter convenient for heat dissipation provided by the utility model is to convert direct current into alternating current, and this process is mainly completed by relying on power semiconductor devices. Insulated gate bipolar transistors (IGBT) and power field effect transistors (MOSFET) among them are classified into a group, namely, a "power conversion assembly".

[0038] Preferably, two or more groups of heat dissipation assemblies can be symmetrically arranged according to different models of inverters.

[0039] Preferably, the heat dissipation element is composed of fins. Through the special shape and arrangement of the fins, the contact area with air is increased, so that heat can be more efficiently dissipated into the air. Of course, in other embodiments, a heat pipe structure can also be used, and the circulating flow of liquid in the pipe is used to carry away heat.

[0040] The inverter convenient for heat dissipation further comprises a positioning heat-conducting pad 13, which is bonded between the first heat dissipation element 9 and the circuit board frame 3 and between the second heat dissipation element 10 and the circuit board frame 3. Through the bonding effect of the positioning heat-conducting pad 13, the heat dissipation element and the circuit board frame 3 can be closely attached, the thermal resistance caused by the air gap is effectively reduced, heat can be more smoothly conducted from the circuit board frame 3 to the heat dissipation element, and the good heat-conducting performance can uniformly disperse heat, avoiding excessive heat accumulation in a local area, thereby further improving the heat-conducting efficiency of the entire heat dissipation system, ensuring stable and reliable operation of the inverter, prolonging its service life and maintaining good working performance.

[0041] Preferably, the connecting heat-conducting pad 12 in the heat dissipation assembly 8 is located between the first heat dissipation element 9 and the second heat dissipation element 10 and is bonded to the circuit board, which builds an efficient heat-conducting channel in the vertical direction, helps heat quickly transfer from the first heat dissipation element 9 to the second heat dissipation element 10 to optimize gradient heat dissipation, ensures stable heat conduction, enhances heat dissipation synergy and reliability, ensures stable heat dissipation of the inverter, efficient operation and prolongs the service life.

[0042] Preferably, the connecting heat-conducting pad 12 can be bonded with heat dissipation single fins 21 with gradually increasing height from the first heat dissipation element 9 to the second heat dissipation element 10. The heat dissipation single fins 21 with gradually increasing height can make heat more smoothly pass from the first heat dissipation element 9 to the second heat dissipation element 10, and increase the contact area with air to accelerate heat dissipation to the surrounding environment, which helps to form a better heat dissipation air duct and improve the heat dissipation efficiency of the inverter convenient for heat dissipation.

[0043] Preferably, the electrical component 2 further comprises a fan 4, which is fixedly arranged in the middle heat dissipation channel 6, and the air outlet of the fan 4 is arranged along the line board frame 3 and one side of the power conversion assembly to the heat dissipation port 5. Through the forced ventilation of the fan 4, the air flow rate in the middle heat dissipation channel 6 is significantly increased, so that the heat can be carried away more quickly, the overall heat dissipation efficiency of the inverter is further improved, the stable working temperature of the inverter under different working conditions is ensured, and the reliability and durability of the inverter operation are improved.

[0044] Specifically, by using the forced ventilation of the fan 4, not only the air flow rate in the middle heat dissipation channel 6 is increased, but also the heat flow in the side heat dissipation channel 7 is increased, which effectively avoids the accumulation of heat in the local area and improves the overall heat dissipation performance and reliability.

[0045] Specifically, the heat dissipation assembly 8 further comprises a third heat dissipation element 11, which is arranged between the second heat dissipation element 10 and the air outlet of the fan 4, and the third heat dissipation element 11 is used to guide the heat of the second heat dissipation element 10 to be dissipated from the air outlet of the fan 4 to the heat dissipation port 5. Through the arrangement of the third heat dissipation element 11, the heat dissipation link between the second heat dissipation element 10 and the air outlet of the fan 4 is effectively connected. It optimizes the heat conduction path by using its own structural characteristics, accurately guides the heat of the second heat dissipation element 10 to be transmitted from the air outlet to the heat dissipation port 5 by the air flow power generated by the fan 4, further improves the heat dissipation efficiency and accuracy, and strengthens the cooperation and continuity of the entire heat dissipation system, so that the inverter can more stably maintain a low temperature environment during operation, and the reliable operation and service life are ensured.

[0046] Preferably, the shape of the third heat dissipation element 11 is adaptively designed according to the shape of the air outlet of the fan 4, and the shapes of the two are matched, and sufficient space is reserved between the third heat dissipation element 11 and the air outlet after installation, so as to ensure that the normal air outlet of the air outlet is not hindered, thereby effectively guiding the heat to be smoothly discharged through the air outlet to the heat dissipation port 5.

[0047] The inverter facilitating heat dissipation further comprises a positioning assembly 14 arranged on the inner wall of the shell 1, which is used to fix the heat dissipation assembly 8, effectively resists the vibration interference caused by the operation of the internal electrical components during the operation of the inverter, prevents the heat dissipation assembly 8 from being displaced or loosened due to vibration, and thus ensures the stability and continuity of the heat conduction path between the heat dissipation assembly 8 and the key components such as the power conversion assembly and the line board frame 3.

[0048] Specifically, the positioning assembly 14 comprises a positioning cylinder 15 fixed to the inner wall of the shell 1 and an elastic member 16 fixed in the positioning cylinder 15, the axial direction of the elastic member 16 coincides with the axial direction of the heat dissipation assembly 8, and the elastic ends of the elastic member 16 abut against the inner wall of the positioning cylinder 15 and the heat dissipation assembly 8, respectively. The positioning cylinder 15 provides support and position limitation for the elastic member 16, the elastic member 16 is used to absorb the small displacement energy of the heat dissipation assembly 8 due to thermal expansion and contraction or equipment vibration during operation, so that the heat dissipation assembly 8 always remains in a relatively stable position, ensuring that the connection tightness and heat conduction efficiency of the heat dissipation assembly 8 with the surrounding assemblies are not affected, thereby guaranteeing the stable operation of the overall heat dissipation system of the inverter. The elastic member 16 in the embodiment can be selected as a spring.

[0049] The inverter facilitating heat dissipation further comprises a handle 17 movably and rotatably connected to the surface of the shell 1, and the handle 17 is used for lifting and hanging. When the inverter needs to be carried, the handle 17 can be conveniently rotated out to a suitable angle for lifting and hanging; and when the inverter is normally placed and used, the handle 17 can be flexibly rotated and stored to tightly fit the surface of the shell 1, so as to ensure that the inverter can maintain good overall appearance integrity and operation convenience in different use scenarios.

[0050] The inverter facilitating heat dissipation further comprises a heat insulation assembly 18 arranged on the inner wall of the shell 1 opposite to the handle 17, and the heat insulation assembly 18 prevents the handle 17 from being scalded when it is placed on the surface of the shell 1 for a long time. When the inverter generates a large amount of heat during long-time operation, the heat insulation assembly 18 can prevent heat from accumulating at the handle 17 corresponding position of the shell 1, so as to avoid the temperature of the hanging handle 17 being too high due to heat accumulation, thereby ensuring the safety and comfort of the user when carrying or operating the inverter, and preventing potential damage to the shell 1 and surrounding components due to overheating, prolonging the overall service life of the product and maintaining the performance stability.

[0051] Specifically, the heat insulation assembly 18 comprises a partition plate 19 arranged on the inner wall of the shell 1 opposite to the handle 17 and an air gap 20 existing between the partition plate 19 and the inner wall of the shell 1. The partition plate 19 directly blocks the spread of heat to the handle 17 area as the main heat barrier, and the air gap 20 also plays a heat insulation buffering role. The low thermal conductivity of air makes it difficult for heat to quickly conduct between the partition plate 19 and the inner wall of the shell 1, and the two cooperatively build a high-efficiency heat insulation space, reducing the influence of the heat inside the inverter on the handle 17 area outside the shell 1, and maintaining the stability of the shell 1 structure, ensuring that the inverter can still guarantee the safety and comfort of the user's operation during long-time operation, and prolonging the overall reliable operation time of the equipment.

[0052] Preferably, the partition 19 can be selected from ceramic fiber board, which is resistant to high temperature and has strong thermal stability, and can continuously and effectively play a heat insulation role in a high temperature environment, reducing the transfer of heat to the outside.

[0053] The above is only the preferred embodiment of the present application, and is not intended to limit the present application in any form. Although the present application is disclosed as above with the preferred embodiment, it is not intended to limit the present application. Any person skilled in the art can make some changes or modifications to the above disclosed technical content without departing from the scope of the present application, and any equivalent embodiment with equivalent changes is equivalent to the above embodiment. Any simple modification, equivalent change and modification of the above embodiment according to the present application are within the scope of the present application.

Claims

1. An inverter that facilitates heat dissipation, characterized in that, include: case; Electrical components are disposed inside the housing, including a power conversion assembly and a circuit board frame, the circuit board frame being mounted on both sides of the power conversion assembly, and the power conversion assembly being mounted on the circuit board frame; A heat dissipation vent is provided on the side of the housing, and the heat dissipation vent is in communication with the inner cavity of the housing; The central heat dissipation channel is composed of the circuit board frames on both sides, the power conversion component in the middle, and the heat dissipation vent in sequence; The side heat dissipation channel is composed of the circuit board frame on both sides, the housing and the heat dissipation vent in sequence; The heat dissipation assembly includes a first heat dissipation element and a second heat dissipation element disposed in the side heat dissipation channel, and the first heat dissipation element and the second heat dissipation element are arranged vertically toward the heat dissipation port and connected to the circuit board frame, and the volume of the second heat dissipation element is larger than the volume of the first heat dissipation element.

2. The inverter with convenient heat dissipation according to claim 1, characterized in that, It also includes a positioning thermal pad, which is bonded between the first heat dissipation element and the circuit board frame, and between the second heat dissipation element and the circuit board frame.

3. An inverter with convenient heat dissipation according to claim 1 or 2, characterized in that, The electrical component also includes a fan, which is fixed in the central heat dissipation channel, and the air outlet of the fan is directed to the heat dissipation port along one side of the circuit board frame and the power conversion component.

4. The inverter with convenient heat dissipation according to claim 3, characterized in that, The heat dissipation assembly further includes a third heat dissipation element, which is installed between the second heat dissipation element and the air outlet of the fan. The third heat dissipation element is used to guide the heat of the second heat dissipation element to be dissipated from the air outlet of the fan to the heat dissipation port.

5. An inverter with convenient heat dissipation according to claim 1 or 2, characterized in that, The heat dissipation assembly further includes a connecting thermal pad, which is disposed between the first heat dissipation element and the second heat dissipation element, and is adhered to the circuit board.

6. An inverter with convenient heat dissipation according to claim 1 or 2, characterized in that, It also includes a positioning component disposed on the inner wall of the housing, the positioning component being used to fix the heat dissipation component.

7. The inverter with convenient heat dissipation according to claim 6, characterized in that, The positioning component includes a positioning cylinder and an elastic element. The positioning cylinder is fixed to the inner wall of the housing, and the elastic element is fixed inside the positioning cylinder. The axial direction of the elastic element coincides with the axial direction of the heat dissipation component, and the elastic ends of the elastic element abut against the inner wall of the positioning cylinder and the heat dissipation component, respectively.

8. An inverter with easy heat dissipation according to claim 6, characterized in that, It also includes a handle, which is rotatably connected to the surface of the housing, and the handle is used for lifting and hanging.

9. An inverter with easy heat dissipation according to claim 8, characterized in that, It also includes a heat insulation component disposed on the inner wall of the housing opposite the handle, the heat insulation component preventing the hanging handle from getting too hot to the touch when placed on the surface of the housing for too long.

10. An inverter with easy heat dissipation according to claim 9, characterized in that, The heat insulation component includes a partition and a spacer. The partition is disposed on the inner wall of the housing relative to the handle, and the spacer exists between the partition and the inner wall of the housing.

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