High-frequency grid-connected and off-grid energy storage inverter

Abstract

The invention discloses a high-frequency grid-connected and off-grid energy storage inverter, and relates to the technical field of inverters, the high-frequency grid-connected and off-grid energy storage inverter comprises a grid-connected and off-grid energy storage inverter body, a cavity is formed in the grid-connected and off-grid energy storage inverter body, and an air inlet which is through inside and outside is formed in the rear side of the top of the grid-connected and off-grid energy storage inverter body; a protective net ring is fixedly connected in the air inlet, a cooling mechanism is arranged on the left side, close to the air inlet, of the top of the grid-connected and off-grid energy storage inverter body, and a plurality of positioning assemblies are arranged on the rear side, close to the outer wall of the cooling mechanism, of the inner wall of the cavity in a rectangular array mode. The lower sides of the left and right ends of the grid-connected and off-grid energy storage inverter body are respectively provided with a dustproof assembly, and the upper side of the interior of the cavity is provided with a heat dissipation assembly. According to the invention, the cooling mechanism is arranged to absorb heat generated by the electrical components in the cavity, and at the same time, through cooperation with operation of the heat dissipation assembly, the flowing speed of air in the cavity is accelerated, and the heat dissipation effect is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of inverters, and in particular to a high-frequency on-grid and off-grid energy storage inverter. Background Art

[0002] The high-frequency on-grid and off-grid energy storage inverter converts AC power into DC power and stores it in the battery. When a power outage occurs, the inverter converts the DC power in the battery into AC power for users to use. It can provide users with two-way conversion between grid power and battery power, and can break through the limitation that photovoltaic inverters can only be used during the day. When it is in the peak period of electricity consumption, the high-frequency on-grid and off-grid energy storage inverter will convert solar DC power into AC power and feed it into the grid for users to use. When it is in the trough period of electricity consumption, the high-frequency on-grid and off-grid energy storage inverter will convert the AC power in the grid into DC power and store it. It can realize the two-way conversion of DC and AC power, and can provide strong protection for electricity consumption during power outages. The high-frequency on-grid and off-grid energy storage inverter can also provide the grid with more stable and pure current with less harmonic content, which not only meets the trend and requirements of energy conservation and emission reduction in today's society, but also improves the stability and quality of the grid. The following problems exist in the existing technology:

[0003] The existing high-frequency on-grid and off-grid energy storage inverter generates a lot of heat inside when it is working. The single setting usually uses a fan to dissipate the heat from the heat dissipation port, and the heat dissipation and cooling effect is not ideal. Secondly, dust easily enters the heat dissipation port of the existing inverter, resulting in a decrease in the heat dissipation effect of the inverter, thereby affecting normal operation and service life. In addition, it is not convenient to position and install the cooling condenser inside the inverter in the existing inverter. Summary of the invention

[0004] The present invention provides a high-frequency on-grid and off-grid energy storage inverter to solve the problems existing in the above-mentioned background technology.

[0005] In order to solve the above technical problems, the technical solution adopted by the present invention is:

[0006] A high-frequency on-grid and off-grid energy storage inverter comprises an on-grid and off-grid energy storage inverter body, a cavity is provided inside the on-grid and off-grid energy storage inverter body, mounting plates are fixedly connected to the rear sides of the left and right ends of the on-grid and off-grid energy storage inverter body, mounting openings that pass through front and back are provided on the upper and lower sides of the middle parts of the two mounting plates, an air inlet that passes through inside and outside is provided on the rear side of the top of the on-grid and off-grid energy storage inverter body, a protective net ring is fixedly connected inside the air inlet, a cooling mechanism is provided on the left side of the top of the on-grid and off-grid energy storage inverter body near the air inlet, and the lower side of the outer wall of the cooling mechanism passes through the inside of the cavity, a plurality of positioning components are provided in a rectangular array near the outer wall of the cooling mechanism on the rear side of the inner wall of the cavity, dustproof components are provided on the lower sides of the left and right ends of the on-grid and off-grid energy storage inverter body, and a heat dissipation component is provided on the upper side of the inside of the cavity.

[0007] A further improvement of the technical solution of the present invention is that heat dissipation ports are respectively opened on the lower sides of the left and right ends of the grid-connected and off-grid energy storage inverter body, the heat dissipation component is arranged on the upper inner side of the cooling mechanism, a T-shaped heat conducting plate is fixedly connected to the middle side of the inner wall of the cavity, a plurality of copper sheets are respectively fixedly connected to the left and right sides of the T-shaped heat conducting plate in the vertical direction, and the outer wall of the transverse surface of the T-shaped heat conducting plate is arranged on the inner side of the cooling mechanism.

[0008] A further improvement of the technical solution of the present invention is that the heat dissipation component includes a connecting plate, the rear end of the connecting plate is fixedly connected to the inner wall of the cavity, the left and right ends of the connecting plate are respectively provided with circular grooves that pass through from top to bottom, the upper end of the connecting plate is fixedly connected to the left and right sides of the outer wall of the circular groove, the lower side of the transverse surface of the U-shaped frame is fixedly connected to a driving motor, and the output end of the driving motor is fixedly connected to a fan through the circular groove.

[0009] A further improvement of the technical solution of the present invention is that the cooling mechanism includes a refrigerator, a condenser, a threaded groove, a connecting sleeve, a mounting tube and a threaded tube. The condenser is arranged in a U-shape. A threaded groove is provided on the outer wall of the input port of the condenser. The outer wall of the condenser is threadedly connected to a connecting sleeve through the threaded groove. The upper end of the outer wall of the mounting tube passes through the top of the grid-connected and off-grid energy storage inverter body and is fixedly connected to the output end of the refrigerator. One end of the threaded tube is fixedly connected to one end of the mounting tube close to the input port of the condenser.

[0010] A further improvement of the technical solution of the present invention is that: the outer diameter of the condenser is equal to the outer diameter of the threaded tube, the interior of the connecting sleeve is threadedly connected to the outer wall of the threaded tube through a threaded groove, a sealing ring is provided at one end of the outer wall of the connecting sleeve close to the threaded tube, a positioning ring is fixedly connected to one end of the outer wall of the threaded tube away from the port, and an annular groove matching the sealing ring is provided at one end of the positioning ring away from the mounting tube, and the outer wall of the sealing ring is engaged with the inner wall of the annular groove.

[0011] A further improvement of the technical solution of the present invention is that the dustproof component includes a rectangular mounting frame, a rectangular frame and a filter screen, the outer wall of the filter screen is fixedly connected to the inner wall of the rectangular frame, the upper and lower sides of the middle of the outer wall of the rectangular frame are respectively fixedly connected with clamping plates, the outer wall of the rectangular mounting frame is provided with a rectangular groove equal to the outer diameter of the rectangular frame, and the inner wall of the rectangular groove is fixedly connected with a plurality of magnet sheets in a rectangular array.

[0012] A further improvement of the technical solution of the present invention is that one end of the rectangular mounting frame away from the rectangular groove is fixedly connected to the outer side of the grid-connected and off-grid energy storage inverter body close to the heat dissipation port, the rectangular frame is set to be made of iron material, and the outer wall of the rectangular frame is engaged with the inside of the rectangular groove and is magnetically connected to the surface of the magnet sheet.

[0013] A further improvement of the technical solution of the present invention is that the positioning assembly includes a clamp, a fixed block and an anti-slip pad, the bottom of the outer wall of the clamp is fixedly connected to one end of the fixed block, the other end of the fixed block is fixedly connected to the inner wall of the cavity, the anti-slip pad is arranged on the inner wall of the clamp, the clamp is set to an elastic material, and the inner wall of the clamp is clamped to the outer wall of the condenser.

[0014] Due to the adoption of the above technical solution, the present invention has the following technical advances compared with the prior art:

[0015] 1. The present invention provides a high-frequency on-grid and off-grid energy storage inverter, which adopts the cooperation among the air inlet, the protective mesh, the cooling mechanism and the heat dissipation component. By arranging the cooling mechanism inside the on-grid and off-grid energy storage inverter body, the heat generated by the electrical components in the cavity is absorbed. At the same time, under the operation of the heat dissipation component, the speed of air flow in the cavity is promoted to improve the heat dissipation effect. The existing high-frequency on-grid and off-grid energy storage inverter generates a lot of heat inside when working. The single setting usually uses a fan to dissipate the heat from the heat dissipation port, and the heat dissipation and cooling effect is not ideal. The beneficial effect of accelerating the heat dissipation efficiency of the on-grid and off-grid energy storage inverter body and improving the heat dissipation effect is achieved.

[0016] 2. The present invention provides a high-frequency grid-connected and off-grid energy storage inverter, which adopts the cooperation between the grid-connected and off-grid energy storage inverter body, the dust-proof component and the heat dissipation port. By arranging the dust-proof component at the interface of the heat dissipation port, the dust in the outside air is filtered through the arranged filter net without affecting the heat dissipation of the grid-connected and off-grid energy storage inverter body, and the dust-proof component is convenient to be removed and disassembled, which solves the problem that dust easily enters the heat dissipation port of the existing inverter, resulting in a decrease in the heat dissipation effect of the inverter, thereby affecting the normal operation and service life, and achieves the beneficial effect of preventing dust from entering from the heat dissipation port and ensuring the normal operation and service life of the grid-connected and off-grid energy storage inverter body.

[0017] 3. The present invention provides a high-frequency on-grid and off-grid energy storage inverter, which adopts the cooperation between the cooling mechanism and the positioning assembly, and by arranging a plurality of positioning assemblies in the on-grid and off-grid energy storage inverter body, by buckling the condensing tube in the cooling mechanism into the inside of the clamp, it is convenient to quickly position and link the condensing tube inside the on-grid and off-grid energy storage inverter body, thereby solving the problem that the existing inverter is not convenient for positioning and installing the cooling condensing tube inside the inverter, and achieving the beneficial effect of conveniently installing the condensing tube in the cooling mechanism inside (101). BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the three-dimensional structure of the high-frequency on-grid and off-grid energy storage inverter of the present invention;

[0019] Figure 2 It is a schematic diagram of the internal three-dimensional structure of the main body of the grid-connected and off-grid energy storage inverter of the present invention;

[0020] Figure 3 It is a schematic diagram of the three-dimensional structure of the cooling mechanism and the heat dissipation assembly of the present invention;

[0021] Figure 4 It is a partial enlarged schematic diagram of the three-dimensional structure A of the present invention;

[0022] Figure 5 It is a schematic diagram of the three-dimensional structure of the dustproof component of the present invention;

[0023] Figure 6 It is a schematic diagram of the three-dimensional structure of the positioning component of the present invention.

[0024] In the figure: 1. On-grid and off-grid energy storage inverter body; 101. Cavity; 102. Heat dissipation port; 2. Mounting plate; 3. Mounting port; 4. Air inlet; 5. Protective mesh; 6. Cooling mechanism; 61. Refrigerator; 62. Condenser; 63. Threaded groove; 64. Connecting sleeve; 641. Sealing ring; 65. Mounting pipe; 66. Threaded pipe; 661. Positioning ring; 6610. Annular groove; 7. Dustproof component; 71. Rectangular mounting frame; 710. Rectangular groove; 72. Rectangular frame; 73. Filter; 74. Card; 75. Magnet sheet; 8. Heat dissipation component; 81. Connecting plate; 82. Circular groove; 83. U-shaped frame; 84. Driving motor; 85. Fan; 9. T-shaped heat conducting plate; 10. Copper sheet; 11. Positioning component; 110. Clamp; 111. Fixing block; 112. Anti-skid pad. DETAILED DESCRIPTION

[0025] The present invention is further described in detail below in conjunction with embodiments:

[0026] Example 1

[0027] like Figure 1-6As shown, the present invention provides a high-frequency on-grid and off-grid energy storage inverter, comprising an on-grid and off-grid energy storage inverter body 1, a cavity 101 is provided inside the on-grid and off-grid energy storage inverter body 1, mounting plates 2 are fixedly connected to the rear sides of the left and right ends of the on-grid and off-grid energy storage inverter body 1, mounting openings 3 that pass through front and back are provided on the upper and lower sides of the middle of the two mounting plates 2, an air inlet 4 that passes through inside and outside is provided on the rear side of the top of the on-grid and off-grid energy storage inverter body 1, a protective mesh ring 5 is fixedly connected inside the air inlet 4, a cooling mechanism 6 is provided on the left side of the top of the on-grid and off-grid energy storage inverter body 1 near the air inlet 4, and the lower side of the outer wall of the cooling mechanism 6 passes through the inside of the cavity 101, and a plurality of positioning components 11 are provided in a rectangular array on the rear side of the inner wall of the cavity 101 near the outer wall of the cooling mechanism 6, dustproof components 7 are provided on the lower sides of the left and right ends of the on-grid and off-grid energy storage inverter body 1, and a heat dissipation component 8 is provided on the upper side of the cavity 101;

[0028] A cooling mechanism 6, a dustproof component 7, a heat dissipation component 8 and a positioning component 11 are provided. The positioning component 11 is provided to facilitate positioning and installing the condenser 62 in the cooling mechanism 6 in the cavity 101. Through the coordinated operation of the cooling mechanism 6 and the heat dissipation component 8, it is convenient to improve the heat dissipation of the heat generated when the grid-connected and off-grid energy storage inverter body 1 is working, and the dustproof component 7 is provided at the heat dissipation port 102 to filter dust in the air.

[0029] Example 2

[0030] like Figure 1-6As shown, on the basis of Example 1, the present invention provides a technical solution: preferably, heat dissipation ports 102 are respectively opened on the lower sides of the left and right ends of the on-grid and off-grid energy storage inverter body 1, the heat dissipation component 8 is arranged on the upper side of the inner part of the cooling mechanism 6, a T-shaped heat conducting plate 9 is fixedly connected to the middle side of the inner wall of the cavity 101, and a plurality of copper sheets 10 are respectively fixedly connected to the left and right sides of the T-shaped heat conducting plate 9 in the vertical direction, and the outer wall of the transverse surface of the T-shaped heat conducting plate 9 is arranged on the inner side of the cooling mechanism 6, and the T-shaped heat conducting plate 9 and the copper sheet 10 are arranged in the cavity 101 to conduct the heat generated by the electronic components during operation, and the heat dissipation component 8 includes a connecting plate 81, and a connecting plate 82 is connected to the connecting plate 83. The rear end of the connecting plate 81 is fixedly connected to the inner wall of the cavity 101, and circular grooves 82 are respectively opened at the left and right ends of the connecting plate 81, and the left and right sides of the outer wall of the circular groove 82 at the upper end of the connecting plate 81 are respectively fixedly connected to U-shaped frames 83, and the lower side of the horizontal surface of the U-shaped frame 83 is fixedly connected to a driving motor 84, and the output end of the driving motor 84 is fixedly connected to a fan 85 through the circular groove 82. The fan 85 is driven by the driving motor 84 to rotate, thereby promoting the speed of air flow in the cavity 101 and improving the heat dissipation effect. The cooling mechanism 6 includes a refrigerator 61, a condenser tube 62, a threaded groove 63, a connecting sleeve 64, a mounting tube 65 and a threaded tube 66 The condenser 62 is set in a U-shape, and a threaded groove 63 is provided on the outer wall of the input port of the condenser 62. The outer wall of the condenser 62 is threadedly connected with a connecting sleeve 64 through the threaded groove 63. The upper end of the outer wall of the mounting tube 65 passes through the top of the grid-connected and off-grid energy storage inverter body 1 and is fixedly connected to the output end of the refrigerator 61. One end of the threaded tube 66 is fixedly connected to one end of the mounting tube 65 close to the input port of the condenser 62. The outer diameter of the condenser 62 is equal to the outer diameter of the threaded tube 66. The inside of the connecting sleeve 64 is threadedly connected to the outer wall of the threaded tube 66 through the threaded groove 63. The input port of the condenser 62 is aligned with the port of the threaded tube 66. The connecting sleeve 64 is then rotated along the threaded groove 63 to the threaded tube 66, so as to connect and fix the condenser 62 and the threaded tube 66. A sealing ring 641 is provided at one end of the outer wall of the connecting sleeve 64 close to the threaded tube 66, and a positioning ring 661 is fixedly connected at one end of the outer wall of the threaded tube 66 away from the port. An annular groove 6610 matching the sealing ring 641 is provided at one end of the positioning ring 661 away from the mounting tube 65, and the outer wall of the sealing ring 641 is engaged with the inner wall of the annular groove 6610, and the sealing ring 641 is squeezed and fitted into the inside of the annular groove 6610, thereby improving the sealing of the connection between the condenser 62 and the threaded tube 66.

[0031] Example 3

[0032] like Figure 1-6As shown, on the basis of Example 1, the present invention provides a technical solution: preferably, the dustproof component 7 includes a rectangular mounting frame 71, a rectangular frame 72 and a filter 73, the outer wall of the filter 73 is fixedly connected to the inner wall of the rectangular frame 72, and the upper and lower sides of the middle of the outer wall of the rectangular frame 72 are respectively fixedly connected with clamping plates 74, the outer wall of the rectangular mounting frame 71 is provided with a rectangular groove 710 equal to the outer diameter of the rectangular frame 72, and a plurality of magnet pieces 75 are fixedly connected to the inner wall of the rectangular groove 710 in a rectangular array, and one end of the rectangular mounting frame 71 away from the rectangular groove 710 is fixedly connected to the outer side of the grid-connected and off-grid energy storage inverter body 1 near the heat dissipation port 102, the rectangular frame 72 is set to be made of iron material, the outer wall of the rectangular frame 72 is engaged with the inside of the rectangular groove 710 and is magnetically connected to the surface of the magnet piece 75, and the rectangular frame 72 is magnetically fixed in the rectangular groove 710 by the magnet piece 75, so as to facilitate the installation and removal of the filter 73.

[0033] Example 3

[0034] like Figure 1-6 As shown, on the basis of Example 1, the present invention provides a technical solution: preferably, the positioning component 11 includes a clamp 110, a fixed block 111 and an anti-slip pad 112, the bottom of the outer wall of the clamp 110 is fixedly connected to one end of the fixed block 111, the other end of the fixed block 111 is fixedly connected to the inner wall of the cavity 101, the anti-slip pad 112 is arranged on the inner wall of the clamp 110, the clamp 110 is set to an elastic material, the inner wall of the clamp 110 is clamped with the outer wall of the condenser 62, and the condenser 62 is pressed and buckled into the clamp 110, the anti-slip pad 112 increases the friction with the surface of the condenser 62, thereby completing the positioning and installation of the condenser 62.

[0035] The following is a detailed description of the working principle of this high-frequency on-grid and off-grid energy storage inverter.

[0036] like Figure 1-6As shown, when the heat generated by the operation of the electronic components in the cavity 101 during the use of the off-grid energy storage inverter body 1 is dissipated, first, the condensed water in the condenser 62 is cooled by the refrigerator 61, and the T-shaped heat conducting plate 9 and the copper sheet 10 in the cavity 101 conduct the heat and transfer the heat to the condenser 62, so that the condenser 62 absorbs and takes away the heat, and at the same time, the drive motor 84 is started, and the output shaft of the drive motor 84 drives the fan 85 to rotate. The wind force generated by the rotation of the fan 85 blows the cold air from the outside into the cavity 101 through the air inlet 4, so that the residual heat in the cavity 101 that has not been absorbed is discharged through the heat dissipation port 102 and outside the body of the off-grid energy storage inverter body 1, thereby promoting the speed of air flow in the cavity 101 and improving the heat dissipation effect. At the same time, by installing a dustproof component 7 on the heat dissipation port 102, the heat dissipation effect is improved. The filter 73 in the dustproof component 7 is used to filter the dust in the air to prevent the dust in the air from adhering to the surface of the electronic components in the cavity 101, thereby improving the heat dissipation effect and ensuring the normal operation and service life of the grid-connected and off-grid energy storage inverter body 1. When cleaning the filter 73, the rectangular frame 72 is driven out of the rectangular groove 710 through the clamping plate 74 to clean the dust on the surface of the filter 73. After cleaning, the rectangular frame 72 is snapped into the rectangular groove 710 again, so that the rectangular frame 72 and the magnet sheet 75 are magnetically fixed. When disassembling and replacing the condenser 62, the grid-connected and off-grid energy storage inverter body 1 is opened to expose the cavity 101, and the sealing ring 641 is disengaged from the annular clamping groove 6610 by rotating the connecting sleeve 64 along the threaded groove 63 to disengage it from the outer wall of the threaded tube 66, and then the condenser 62 can be pulled out of the clamp 110.

[0037] The specific types and structures of the grid-connected and off-grid energy storage inverter body 1, refrigerator 61 and drive motor 84 used are all existing products, and the specific circuit connection structure and control relationship of the refrigerator 61 and drive motor 84 are all existing technologies, which will not be elaborated here.

[0038] The above generally describes the present invention in detail, but it is obvious to a person skilled in the art that some modifications or improvements can be made to the present invention. Therefore, modifications or improvements that do not depart from the spirit of the present invention are within the scope of protection of the present invention.

Claims

1. A high-frequency on-grid and off-grid energy storage inverter, comprising an on-grid and off-grid energy storage inverter body (1), characterized in that: The on-grid and off-grid energy storage inverter body (1) has a cavity (101) formed inside, the rear sides of the left and right ends of the on-grid and off-grid energy storage inverter body (1) are respectively fixedly connected to mounting plates (2), the upper and lower sides of the middle of the two mounting plates (2) are respectively provided with mounting openings (3) that are through-through from front to back, the rear side of the top of the on-grid and off-grid energy storage inverter body (1) is provided with an air inlet (4) that is through-through from inside to outside, the air inlet (4) is fixedly connected to a protective net ring (5), and the on-grid and off-grid energy storage inverter body (1) is provided with a protective net ring (5) that is fixedly connected to the inside of the air inlet (4). A cooling mechanism (6) is arranged on the left side of the top of the inverter body (1) near the air inlet (4), and the lower side of the outer wall of the cooling mechanism (6) penetrates into the interior of the cavity (101); a plurality of positioning components (11) are arranged in a rectangular array on the rear side of the inner wall of the cavity (101) near the outer wall of the cooling mechanism (6); dustproof components (7) are arranged on the lower sides of the left and right ends of the on-grid and off-grid energy storage inverter body (1), and a heat dissipation component (8) is arranged on the upper side of the interior of the cavity (101).

2. A high-frequency on-grid and off-grid energy storage inverter according to claim 1, characterized in that: The lower sides of the left and right ends of the on-grid and off-grid energy storage inverter body (1) are respectively provided with heat dissipation openings (102); the heat dissipation assembly (8) is arranged on the upper side of the interior of the cooling mechanism (6); a T-shaped heat conducting plate (9) is fixedly connected to the middle side of the inner wall of the cavity (101); a plurality of copper sheets (10) are fixedly connected to the left and right sides of the T-shaped heat conducting plate (9) in a vertical direction; and the outer wall of the transverse surface of the T-shaped heat conducting plate (9) is arranged on the inner side of the cooling mechanism (6).

3. A high-frequency on-grid and off-grid energy storage inverter according to claim 1, characterized in that: The heat dissipation assembly (8) comprises a connecting plate (81), the rear end of the connecting plate (81) is fixedly connected to the inner wall of the cavity (101), the left and right ends of the connecting plate (81) are respectively provided with circular grooves (82) which penetrate from top to bottom, the upper end of the connecting plate (81) is respectively fixedly connected to the left and right sides of the outer wall of the circular groove (82), the lower side of the transverse surface of the U-shaped frame (83) is fixedly connected to a driving motor (84), and the output end of the driving motor (84) is fixedly connected to a fan (85) through the circular groove (82).

4. The high-frequency on-grid and off-grid energy storage inverter according to claim 1, characterized in that: The cooling mechanism (6) comprises a refrigerator (61), a condenser (62), a threaded groove (63), a connecting sleeve (64), a mounting tube (65) and a threaded tube (66); the condenser (62) is arranged in a U-shape; the outer wall of the input port of the condenser (62) is provided with a threaded groove (63); the outer wall of the condenser (62) is threadedly connected to the connecting sleeve (64) via the threaded groove (63); the upper end of the outer wall of the mounting tube (65) passes through the top of the on-grid and off-grid energy storage inverter body (1) and is fixedly connected to the output end of the refrigerator (61); one end of the threaded tube (66) is fixedly connected to one end of the mounting tube (65) close to the input port of the condenser (62).

5. A high-frequency on-grid and off-grid energy storage inverter according to claim 4, characterized in that: The outer diameter of the condenser tube (62) is equal to the outer diameter of the threaded tube (66); the interior of the connecting sleeve (64) is threadedly connected to the outer wall of the threaded tube (66) via a threaded groove (63); a sealing ring (641) is provided at one end of the outer wall of the connecting sleeve (64) close to the threaded tube (66); a positioning ring (661) is fixedly connected at one end of the outer wall of the threaded tube (66) away from the port; an annular groove (6610) matching the sealing ring (641) is provided at one end of the positioning ring (661) away from the mounting tube (65); the outer wall of the sealing ring (641) is engaged with the inner wall of the annular groove (6610).

6. The high-frequency on-grid and off-grid energy storage inverter according to claim 1, characterized in that: The dustproof component (7) comprises a rectangular installation frame (71), a rectangular frame (72) and a filter screen (73); the outer wall of the filter screen (73) is fixedly connected to the inner wall of the rectangular frame (72); the upper and lower sides of the middle of the outer wall of the rectangular frame (72) are respectively fixedly connected with clamping plates (74); the outer wall of the rectangular installation frame (71) is provided with a rectangular groove (710) having the same outer diameter as the rectangular frame (72); and the inner wall of the rectangular groove (710) is fixedly connected with a plurality of magnet sheets (75) in a rectangular array.

7. A high-frequency on-grid and off-grid energy storage inverter according to claim 6, characterized in that: One end of the rectangular installation frame (71) away from the rectangular groove (710) is fixedly connected to the outer side of the grid-connected and off-grid energy storage inverter body (1) close to the heat dissipation port (102); the rectangular frame (72) is made of iron material; the outer wall of the rectangular frame (72) is engaged with the inside of the rectangular groove (710) and is magnetically connected to the surface of the magnet sheet (75).

8. The high-frequency on-grid and off-grid energy storage inverter according to claim 1, characterized in that: The positioning assembly (11) includes a clamp (110), a fixing block (111) and an anti-skid pad (112); the bottom of the outer wall of the clamp (110) is fixedly connected to one end of the fixing block (111); the other end of the fixing block (111) is fixedly connected to the inner wall of the cavity (101); the anti-skid pad (112) is arranged on the inner wall of the clamp (110); the clamp (110) is arranged to be made of elastic material; the inner wall of the clamp (110) is clamped to the outer wall of the condenser (62).

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