Inverter

Abstract

The utility model relates to an inverter, in particular to a single-phase photovoltaic grid-connected inverter, which comprises a shell and a radiator, a power plate is arranged in the shell, a capacitor component is arranged on the power plate, the power plate is mounted on the vertical inner wall of one side of the shell, and the radiator is mounted on the outer wall of the shell close to one side of the power plate. A first heat conduction piece and a second heat conduction piece are further arranged in the shell, the second heat conduction piece is fixed to the inner wall of the shell through the power board, the first heat conduction piece is arranged between the power board and the inner wall of the other side of the shell, one face of the first heat conduction piece is connected with the capacitor assembly, and a supporting part connected with the shell is further arranged below the first heat conduction piece. The supporting part is used for abutting against the first heat conduction piece, so that when the inverter is placed perpendicular to the ground for a long time, the working stability and reliability of the inverter are powerfully guaranteed, and the probability of faults caused by overheating is remarkably reduced.

Description

TECHNICAL FIELD

[0001] The utility model relates to inverter technical field, specifically is a single -phase photovoltaic grid -connected inverter. BACKGROUND

[0002] Single -phase photovoltaic grid -connected inverter is a kind of grid-connected inverter, and photovoltaic grid-connected inverter is the equipment that direct current is converted into 220V alternating current. It is composed of inductance, internal circuit board, internal fan, wiring harness and software etc.

[0003] The existing inductance built-in type single -phase photovoltaic grid -connected inverter, locally increase heat-conducting silica gel pad to improve the heat dissipation efficiency of partial high-loss device, but this heat-conducting silica gel pad has certain elasticity, and there is the risk of sliding down under the action of gravity when vertically placed for a long time on the ground, thereby reducing the heat dissipation efficiency of these devices. Therefore, in view of the above problems, it is necessary to propose a further solution. UTILITY MODEL CONTENTS

[0004] The utility model discloses in order to solve the problems in the prior art, provide a kind of inverter, the device solves the risk of sliding down of heat-conducting silica gel pad when inverter is vertically placed for a long time on the ground.

[0005] To solve the above problems, the following technical solutions are provided:

[0006] The utility model discloses a kind of inverters, including shell and radiator, power board is equipped in the shell, power board has capacitor assembly, the power board is installed on the vertical inner wall of shell side, the radiator is installed on the shell outer wall close to power board side, first heat-conducting piece and second heat-conducting piece are further equipped in the shell, the second heat-conducting piece is fixed on the inner wall of shell by power board, the first heat-conducting piece is located between power board and the other side inner wall of shell, one side of first heat-conducting piece is connected with capacitor assembly, support portion connected with shell is further equipped in the lower of first heat-conducting piece.

[0007] The above scheme is constructed by setting first heat-conducting piece and second heat-conducting piece Comprehensive efficient heat dissipation path, can rapidly conduct out the heat generated by power board and capacitor assembly etc., dissipate by radiator, substantially improve heat dissipation efficiency, while setting support portion for resisting first heat-conducting piece, so that when inverter is vertically placed for a long time on the ground, the stability and reliability of inverter work are effectively guaranteed, the probability of failure caused by overheating is significantly reduced.

[0008] The first heat-conducting piece and the second heat-conducting piece are both heat-conducting silica gel pads.

[0009] The first heat-conducting piece and the second heat-conducting piece of the above scheme are both heat-conducting silica gel pads. Heat-conducting silica gel pad has excellent heat-conducting performance and good insulation performance, can efficiently transmit heat, while guaranteeing the safe operation of circuit.

[0010] The shell comprises an upper panel and a lower panel, the upper panel and the lower panel are connected through a side panel, the second heat conduction piece and the power plate are located on one side of the lower panel, and the heat sink is located on the other side of the lower panel, and the second heat conduction piece is located between the power plate and the lower panel.

[0011] The above scheme uses a shell to facilitate the installation and use of the inverter in different environments, and is beneficial to the reasonable layout and heat dissipation of internal components, thereby improving the space utilization and heat dissipation effect.

[0012] The outer end surface of the lower panel is also connected with a hanging bracket, and the hanging bracket is used to install the inverter on the wall surface or the side surface of the equipment.

[0013] The hanging bracket of the above scheme is used to conveniently install the inverter on the wall surface or the side surface of the equipment, and is suitable for different installation scenes and space requirements.

[0014] The shell further comprises an inductance assembly, the inductance assembly is arranged on one side of the power plate, the inductance assembly is fixedly installed on the lower panel, and the second heat conduction piece is arranged between the inductance assembly and the lower panel.

[0015] The inductance assembly of the above scheme is arranged on one side of the power plate, is fixedly installed on the lower panel, and the second heat conduction piece is arranged between the inductance assembly and the lower panel, so that the heat generated by the inductance assembly can be dissipated in time.

[0016] The support part adopts an L-shaped bracket, the horizontal branch of the L-shaped bracket is connected with the first heat conduction piece, and the vertical branch of the L-shaped bracket is fixedly connected with the upper panel.

[0017] The above scheme adopts the L-shaped bracket to stably support the first heat conduction piece, so that the first heat conduction piece can maintain a stable position during work, and good heat conduction effect is guaranteed.

[0018] The support part adopts a U-shaped bracket, the U-shaped bracket has a first branch and a second branch in L-shaped structure, the first branch and the second branch are connected into one body through a third branch, in the vertical placement state of the inverter, the first branch is fixedly connected with the upper panel, the L-shaped groove of the second branch is clamped on the first heat conduction piece, and the first branch and the second branch have elastic potential energy that opens outward, so that the second branch can abut against the surface of the first heat conduction piece.

[0019] The above scheme adopts the U-shaped bracket and the U-shaped bracket adopts the elastic design, so that the adaptability of the support part and the first heat conduction piece is further enhanced, the first heat conduction piece is prevented from falling, and the connection stability of the first heat conduction piece and the capacitor assembly is guaranteed.

[0020] The above scheme has the following advantages:

[0021] 1. The inverter of the present application comprises a shell and a heat sink, a power board is arranged in the shell, the power board is provided with a capacitor assembly, the power board is installed on a vertical inner wall of one side of the shell, the heat sink is installed on an outer wall of the shell close to the power board, the shell is further provided with a first heat conduction member and a second heat conduction member, the second heat conduction member is fixed on the inner wall of the shell through the power board, the first heat conduction member is arranged between the power board and the inner wall of the other side of the shell, one side of the first heat conduction member is connected with the capacitor assembly, and a supporting portion connected with the shell is further arranged below the first heat conduction member. By arranging the first heat conduction member and the second heat conduction member, a comprehensive and efficient heat dissipation path is constructed, the heat generated by the power board and the capacitor assembly can be rapidly conducted away, dissipated through the heat sink, and the heat dissipation efficiency is greatly improved. Meanwhile, the supporting portion is arranged to resist the first heat conduction member, so that the stability and reliability of the inverter during operation are effectively ensured, and the probability of failure caused by overheating is significantly reduced.

[0022] 2. The first heat conduction member and the second heat conduction member are both made of heat-conducting silica gel pads. The heat-conducting silica gel pads are used as the heat conduction members, so that the excellent heat conduction and insulation properties of the heat-conducting silica gel pads are fully utilized, the heat can be efficiently conducted, and the safety problems such as circuit short circuit are effectively prevented, and the safety and stability of the inverter during operation are improved.

[0023] 3. The shell comprises an upper panel and a lower panel, the upper panel and the lower panel are connected through a side plate, the second heat conduction member and the power board are located on one side of the lower panel, the heat sink is located on the other side of the lower panel, and the second heat conduction member is located between the power board and the lower panel, so that the inverter can be installed and used in different environments, and the reasonable layout and heat dissipation of the internal components are facilitated, and the space utilization and heat dissipation effect are improved. BRIEF DESCRIPTION OF DRAWINGS

[0024] In order to make the content of the present application more easily understood, the present application will be further described in detail below according to the specific embodiments of the present application and in combination with the drawings, in which:

[0025] Figure 1 is an explosion schematic view of the inverter of the first embodiment;

[0026] Figure 2 is a structural schematic view of the supporting portion of the first embodiment;

[0027] Figure 3 is a structural schematic view of the supporting portion of the second embodiment.

[0028] The drawings show that: 1, shell; 101, upper panel; 102, side plate; 103, lower panel; 2, power board; 3, heat sink; 4, first heat conduction member; 5, second heat conduction member; 6, supporting portion; 601, first supporting arm; 602, second supporting arm; 603, third supporting arm; 7, capacitor assembly; 8, inductor assembly; 9, suspension bracket. DETAILED DESCRIPTION

[0029] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the utility model.

[0030] As shown in the drawings, Figure 1 The inverter of the first embodiment comprises a shell 1 and a radiator 3, the shell 1 is internally provided with a power board 2, the power board 2 is provided with a capacitor assembly 7, the power board 2 is installed on a vertical inner wall of one side of the shell 1, the radiator 3 is installed on an outer wall of the shell 1 close to one side of the power board 2, the shell 1 is further internally provided with a first heat-conducting member 4 and a second heat-conducting member 5, the second heat-conducting member 5 is fixed to the inner wall of the shell 1 through the power board 2, the first heat-conducting member 4 is arranged between the power board 2 and the inner wall of the other side of the shell 1, one side of the first heat-conducting member 4 is connected with the capacitor assembly 7, and a supporting part 6 connected with the shell 1 is further arranged below the first heat-conducting member 4. The first heat-conducting member 4 and the second heat-conducting member 5 construct a comprehensive and efficient heat dissipation path, can rapidly conduct away the heat generated by the power board 2 and the capacitor assembly 7, dissipate through the radiator 3, greatly improve the heat dissipation efficiency, and at the same time, the supporting part 6 is arranged to resist the first heat-conducting member 4, so as to ensure the stability and reliability of the inverter when the inverter is vertically placed on the ground for a long time, that is, the power board 2 is vertically placed on the ground, which is also a commonly used installation mode of the inverter, and the probability of failure caused by overheating is significantly reduced. The first heat-conducting member 4 and the second heat-conducting member 5 are both made of heat-conducting silica gel pads.

[0031] The heat-conducting silica gel pad has excellent heat-conducting performance and good insulation performance, can efficiently transfer heat, and ensures the safe operation of the circuit.

[0032] As shown in the drawings, Figure 2 The supporting part 6 of the embodiment is an L-shaped support, the horizontal supporting arm of the L-shaped support is connected with the first heat-conducting member 4, and the vertical supporting arm of the L-shaped support is fixedly connected with the upper panel 101. The L-shaped support can stably support the first heat-conducting member 4, so that the first heat-conducting member 4 remains stable in position during the working process, and good heat-conducting effect is ensured.

[0033] The shell 1 comprises an upper panel 101 and a lower panel 103, the upper panel 101 and the lower panel 103 are connected through a side panel 102, the second heat conduction piece 5 and the power panel 2 are located on one side of the lower panel 103, the heat dissipation device 3 is located on the other side of the lower panel 103, the second heat conduction piece 5 is located between the power panel 2 and the lower panel 103, the shell 1 is used so that the inverter can be installed and used in different environments, which is beneficial to the reasonable layout and heat dissipation of the internal components, and the space utilization and heat dissipation effect are improved. The outer end surface of the lower panel 103 is also connected with a hanging bracket 9, and the hanging bracket 9 is used to install the inverter on the wall surface or the side of the equipment. The hanging bracket 9 is used to conveniently install the inverter on the wall surface or the side of the equipment, and is suitable for different installation scenes and space requirements.

[0034] Further, the shell 1 is also provided with an inductance assembly 8, the inductance assembly 8 is arranged on one side of the power panel 2, the inductance assembly 8 is fixedly installed on the lower panel 103, and the inductance assembly 8 and the lower panel 103 also have the second heat conduction piece 5. The inductance assembly 8 is arranged on one side of the power panel 2, fixedly installed on the lower panel 103, and the inductance assembly 8 and the lower panel 103 are also provided with the second heat conduction piece 5, so that the heat generated by the inductance assembly 8 can be dissipated in time.

[0035] As shown in Figure 3 As a second embodiment of the inverter, compared with the first embodiment, the support part 6 adopts a U-shaped bracket, the U-shaped bracket has two L-shaped first arms 601 and second arms 602, the first arms 601 and the second arms 602 are connected as a whole through a third arm 603, in the vertical placement state of the inverter, the first arms 601 are fixedly connected with the upper panel 101, the L-shaped recess of the second arms 602 is clamped on the first heat conduction piece 4, and the first arms 601 and the second arms 602 have elastic potential energy, so that the A surface of the second arms 602 can abut against the first heat conduction piece 4, and then the B surface of the second arms 602 can give the first heat conduction piece 4 sufficient support, so as to avoid the first heat conduction piece 4 from falling off.

[0036] The scheme also provides an assembly process of the inverter:

[0037] 1) The power panel 2 is stably installed on the vertical inner wall on one side of the shell 1, and a suitable fastening mode is adopted to ensure that it will not be loose or displaced during work.

[0038] 2) The second heat conduction piece 5 is placed between the power panel 2 and the lower panel 103 of the shell 1, and the installation structure of the power panel 2 is used to tightly fit the inner wall of the shell 1, so as to achieve good heat conduction.

[0039] 3) The related elements such as the capacitor assembly 7 are correctly installed on the power panel 2, and are connected and arranged strictly according to the circuit design and assembly specification.

[0040] 4) Place the first heat-conducting member 4 between the power plate 2 and the other side inner wall of the shell 1, so that one side of the first heat-conducting member 4 is in full contact with the capacitor assembly 7 to ensure that heat can be effectively transferred, and reliable support and fixation are achieved through the L-shaped support below. When the horizontal branch of the L-shaped support is connected with the first heat-conducting member 4, it is ensured that the connection is tight without gaps, and the fixed connection between the vertical branch and the upper panel 101 is firm and reliable.

[0041] 5) Install the inductor assembly 8 on one side of the power plate 2 and firmly fix it on the lower panel 103, accurately install and connect as required, and place the second heat-conducting member 5 between the inductor assembly 8 and the lower panel 103 to ensure that the heat of the inductor assembly 8 is smoothly conducted out.

[0042] 6) Install the heat sink 3 on the outer wall of the shell 1 close to one side of the power plate 2, usually using fastening elements such as screws for fixation, to ensure that the heat sink 3 is in close contact with the shell 1, facilitating the transfer of heat from the shell 1 to the heat sink 3 and then to the surrounding environment.

[0043] 7) Install the hanging bracket 9 on the outer end face of the lower panel 103, and the installation of the hanging bracket 9 should meet the requirements of the principles of mechanics and actual use scenarios, so that it can stably install the inverter on the wall surface or the side of the equipment, meeting the needs of different installation environments.

[0044] When the inverter starts working, the circuit components such as the capacitor assembly 7 and the inductor assembly 8 on the power plate 2 will generate heat. The second heat-conducting member 5 conducts the heat generated by the power plate 2 and the inductor assembly 8 to the shell 1, and the first heat-conducting member 4 conducts the heat generated by the capacitor assembly 7 to the other side inner wall of the shell 1. The heat is transferred through the shell 1 to the heat sink 3 on the outer wall, and the heat sink 3 uses its heat sink fins and other structures to increase the contact area with the air, thereby quickly dissipating heat to the surrounding environment, achieving effective heat dissipation of the internal components of the inverter, maintaining the normal working temperature of the inverter, and improving its working stability and service life.

[0045] It can be understood that the utility model is described through some embodiments, and those skilled in the art know that various changes or equivalent replacements can be made to these features and embodiments without departing from the spirit and scope of the utility model. In addition, under the guidance of the utility model, these features and embodiments can be modified to adapt to specific conditions and materials without departing from the spirit and scope of the utility model. Therefore, the utility model is not limited by the specific embodiments disclosed herein, and all embodiments falling within the scope of the claims of the present application belong to the scope protected by the utility model.

Claims

1. An inverter comprising a housing (1) and a heat sink (3), a power board (2) being provided in the housing (1), a capacitor assembly (7) being provided on the power board (2), the power board (2) being mounted on a vertical inner wall of the housing (1) on one side, the heat sink (3) being mounted on an outer wall of the housing (1) on a side close to the power board (2), characterized in that, The shell (1) is further provided with a first heat conducting member (4) and a second heat conducting member (5), the second heat conducting member (5) is fixed on the inner wall of the shell (1) through the power plate (2), the first heat conducting member (4) is arranged between the power plate (2) and the other side of the inner wall of the shell (1), one side of the first heat conducting member (4) is connected with the capacitor assembly (7), and the support part (6) connected with the shell (1) is further arranged below the first heat conducting member (4).

2. An inverter according to claim 1, characterized in that The first heat conducting member (4) and the second heat conducting member (5) are both made of heat conducting silica gel pads.

3. An inverter according to claim 1 or 2, characterised in that, The shell (1) comprises an upper panel (101) and a lower panel (103), the upper panel (101) and the lower panel (103) are connected through a side plate (102), the second heat conducting member (5) and the power plate (2) are located on one side of the lower panel (103), and the heat radiator (3) is located on the other side of the lower panel (103), and the second heat conducting member (5) is located between the power plate (2) and the lower panel (103).

4. An inverter according to claim 3, wherein The outer end surface of the lower panel (103) is further connected with a hanging bracket (9), and the hanging bracket (9) is used for mounting the inverter on the wall surface or the side surface of equipment.

5. An inverter according to claim 4, wherein The shell (1) is further provided with an inductor assembly (8), the inductor assembly (8) is arranged on one side of the power plate (2), the inductor assembly (8) is fixedly installed on the lower panel (103), and the second heat conducting member (5) is arranged between the inductor assembly (8) and the lower panel (103).

6. An inverter according to claim 5, wherein The support part (6) is an L-shaped bracket, the horizontal supporting arm of the L-shaped bracket is connected with the first heat conducting member (4), and the vertical supporting arm of the L-shaped bracket is fixedly connected with the upper panel (101).

7. An inverter according to claim 5, wherein The support part (6) is a U-shaped bracket, the U-shaped bracket has two first supporting arms (601) and second supporting arms (602) in L-shaped structures, the first supporting arm (601) and the second supporting arm (602) are connected into an integrated whole through a third supporting arm (603), in the vertical placement state of the inverter, the first supporting arm (601) is fixedly connected with the upper panel (101), the L-shaped recess of the second supporting arm (602) is clamped on the first heat conducting member (4), and the first supporting arm (601) and the second supporting arm (602) have elastic potential energy opening outwards so that the second supporting arm (602) can abut against the surface of the first heat conducting member (4).

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