A durable and stable solar inverter and method of use thereof

Abstract

The application relates to the technical field of solar inverters, in particular to a durable and stable solar inverter and a use method thereof. The solar inverter comprises a shell and a solar inverter body fixedly arranged in the shell. The shell comprises a rear shell and a front shell matched with each other. A connecting mechanism is arranged between the rear shell and the front shell. The connecting mechanism comprises a first connecting assembly and a second connecting assembly. The first connecting assembly is arranged on the rear shell, and the second connecting assembly is arranged on the front shell. A switch mechanism is arranged on the outer surface of the front shell. A fixing mechanism for mounting with a preset position outside is arranged on the rear shell. The application is characterized in that a sealing gasket is arranged between the front and rear shells of the photovoltaic inverter, and a connecting mechanism is additionally arranged. The front shell is inlaid and slidably connected to the connecting edge plate. The bottom plate and the protective top plate are used for protecting the bottom and top of the photovoltaic inverter shell respectively, so that the connection sealing property of the photovoltaic inverter shell is greatly improved.

Description

Technical Field

[0001] The present invention relates to the technical field of solar inverters, and in particular to a durable and stable solar inverter. Background Art

[0002] A photovoltaic inverter is a converter that converts direct current (DC) power into constant-frequency and constant-voltage or frequency- and voltage-regulated alternating current (AC). It consists of an inverter bridge, control logic, and filtering circuits, and is widely used in ground-based power stations, desert power stations, centralized power stations, rooftop photovoltaic power generation systems, and distributed household rooftop power stations. To prevent the ingress of dust, insects, and other impurities, the front and rear shells need to be sealed. Existing photovoltaic inverter housings are generally sealed with gaskets, but the sealing effect needs to be improved. Solar inverters are usually installed by directly screwing them to the wall, making assembly and disassembly more cumbersome, and the solar inverters need to be protected to extend their service life. Furthermore, the inverter outputs a high-voltage power supply during use, so when connected to an external circuit, sparks are easily generated during rewiring, posing a hazard. Summary of the Invention

[0003] In view of the shortcomings of the prior art, an object of the present invention is to provide a durable and stable solar inverter.

[0004] To achieve the above objectives, the present invention provides the following technical solution: a durable and stable solar inverter, comprising a housing and a solar inverter body fixedly disposed within the housing, the housing comprising a rear housing and a front housing that cooperate with each other, a connecting mechanism being disposed between the rear housing and the front housing, the connecting mechanism comprising a first connecting component and a second connecting component, the first connecting component being disposed on the rear housing, the second connecting component being disposed on the front housing, a switch mechanism being disposed on an outer surface of the front housing, and a fixing mechanism being disposed on the rear housing for mounting to an external preset position.

[0005] The switch mechanism includes an operation panel, a main switch and a sub-switch arranged on the operation panel, and a controller, a relay, and a thyristor circuit board arranged on the back of the front shell. One end of the main switch is connected to the power output end of the solar inverter body, and the other end of the main switch is respectively connected to the input end of the thyristor circuit board, one end of the sub-switch, and one end of the normally open contact of the relay. The output end of the thyristor circuit board, the other end of the sub-switch, and the other end of the normally open contact of the relay are connected to each other and set as the external output end of the power supply. The control end of the thyristor circuit and the control end of the relay coil are respectively connected to an output end of the controller.

[0006] The fixing mechanism includes a fixing plate, a fixing groove, a roller, a first pin hole, a bracket, a connecting groove, a slide groove and a first bolt. The back of the solar inverter body is fixedly connected to the fixing plate, a fixing groove is provided on one side of the fixing plate, and a roller is rotatably connected to the inner side of the fixing groove. A first pin hole is provided on the outer side of the fixing plate, and a bracket is provided on the outer side of the fixing plate. A connecting groove is provided on the back of the bracket, and a slide groove is provided on the inner cavity side wall of the connecting groove. Some threads of the bracket are penetrated and connected with the first bolt, and the fixing plate is fixedly connected to the bracket through the first bolt.

[0007] In some embodiments, the first connecting component includes a connecting side plate and a limit frame, and the connecting side plate and the limit frame are respectively fixedly mounted on the front end of the rear shell, the top of the connecting side plate is an open end, and a sealing gasket is provided at the front end of the limit frame. Both side ends of the connecting side plate are provided with a first slot, and a second slot is provided between the connecting side plate and the limit frame. Bolt mounting ports are also provided on both side ends of the connecting side plate, the bottom of the connecting side plate is fixedly mounted with a base plate, and a horizontal insertion strip is fixedly mounted on the top of the base plate, and a third slot is provided on the inner wall of the bottom of the connecting side plate.

[0008] In some embodiments, the second connecting component includes a first plug rod, a second plug rod and a clamping plate, the first plug rod and the second plug rod are respectively fixedly installed on the inner side of the front shell, the clamping plates are fixedly set on both sides of the front shell, the top of the front shell is fixedly installed with a protective top plate, the inner wall of the protective top plate is provided with a sealing strip, the top of the second plug rod is fixedly installed with a limit rod, the bottom of the second plug rod is fixedly installed with an insertion shaft, and a fourth slot is opened at the bottom of the front shell.

[0009] In some embodiments, a mounting seat is welded to the rear end of the rear shell, a wiring port is opened at the bottom of the rear shell, a sealing ring is provided in the wiring port, and a heat conducting rod is fixedly installed at the bottom of the rear shell.

[0010] In some embodiments, a through hole is formed through one side of the bracket, and two through holes are provided.

[0011] In some embodiments, the outer wall of the fixing plate is adapted to the inner wall of the connecting groove, and the outer wall of the roller is fitted to the inner wall of the sliding groove.

[0012] In some embodiments, a protective mechanism is provided at the top of the bracket, and the protective mechanism includes a slot, a second bolt, a support frame, a second pin hole and a cover plate. A slot is provided at the top of the bracket, a second bolt is threaded through one side of the slot, a support frame is inserted into the inner side of the slot, a second pin hole is provided on the outer side of one end of the support frame, and a cover plate is fixedly connected to one end of the support frame.

[0013] In some embodiments, the support frame is fixedly connected to the bracket by a second bolt, and the inner wall size of the slot is adapted to the outer wall of one end of the support frame.

[0014] In some embodiments, a cover is provided on the outside of the operation panel, one end of the cover is hinged to the outer surface of the front shell, and a lock is provided between the other end of the cover and the outer surface of the front shell.

[0015] In some embodiments, an operating groove is provided inside the front shell near the axis hinged to the cover shell, an operating button is provided in the operating groove, and an operating protrusion is provided on the cover shell at the hinge axis connected to the front shell, and the operating protrusion cooperates with the operating button.

[0016] To achieve the above objectives, the present invention further provides the following technical solution: a method for using a durable and stable solar inverter, according to the solar inverter, the steps are:

[0017] (1) First, fix the rear shell at the preset position, pass the bolts through the through hole on one side of the bracket, and fix the two brackets to the wall with bolts;

[0018] (2) Then insert the two fixing plates on the back of the rear shell into the connecting groove from top to bottom, and use the rollers to roll the connecting grooves to install the rear shell;

[0019] (3) After the plug-in is completed, the first bolt is tightened so that one end of the first bolt is inserted into the first pin hole, thereby limiting the position of the fixing plate so that the outer wall of the fixing plate is adapted to the inner wall of the connecting groove;

[0020] (4) After the rear shell is installed, insert one end of the support frame into the slot, then screw on the second bolt, and insert one end of the second bolt into the second pin hole to limit and fix the support frame. One end of the support frame is fixedly connected to the cover plate, and the cover plate is used to cover and protect the outer shell;

[0021] (5) After the installation is completed, fix the solar inverter body into the rear shell;

[0022] (6) Then connect the output terminal on the solar inverter body to the main switch input terminal on the front shell, and disconnect the main switch;

[0023] (7) Finally, slide the front shell from the top of the rear shell to install it. Slide the first plug rod on the front shell into the first slot, slide the second plug rod into the second slot, insert the plug shaft at the bottom of the second plug rod into the third slot, and insert the plug strip into the fourth slot at the bottom of the front shell, so that the limit rod is used to fit and snap into the top of the limit frame.

[0024] (8) The top of the joint between the rear shell and the front shell is protected by the protective top plate;

[0025] (9) After the clamping plate is clamped to the outside of the connecting edge plate, the clamping plate is fixedly connected to the connecting edge plate by installing bolts through the bolt installation holes;

[0026] (10) After the overall assembly is completed, during use, the relay switch is opened and the thyristor is disconnected by the controller;

[0027] (11) Then, the main switch is closed, and the thyristor is turned on by the controller;

[0028] (12) Finally, the relay on-circuit or the separate switch on-circuit is selected according to the use requirement;

[0029] (13) After the relay on-circuit or the separate switch on-circuit, the thyristor is turned off by the controller, and the overall circuit on-circuit process is completed;

[0030] (14) When the circuit needs to be disconnected or the inverter needs to be maintained, the thyristor is turned on by the controller, then the relay or the separate switch is disconnected, the thyristor is turned off by the controller, and finally the main switch is disconnected, so that the circuit is disconnected;

[0031] (15) After the circuit is disconnected, the front shell is slid off the rear shell, and the solar inverter can be maintained;

[0032] (16) When the rear shell needs to be disassembled, based on step (15), only the first bolt needs to be unscrewed, the rear shell needs to be pulled upwards, and the rear shell needs to be taken out through the roller, and the setting of the roller can make the disassembly more convenient and have an auxiliary effect.

[0033] Compared with the prior art, the beneficial effects of the present application are that the sealing gasket is arranged between the front and rear shells of the photovoltaic inverter, and a connecting mechanism is additionally arranged, the front shell is slidingly clamped to the connecting edge plate, and the bottom and top of the photovoltaic inverter shell are protected by the bottom plate and the protective top plate, respectively, so that the connection and sealing performance of the photovoltaic inverter shell is greatly improved;

[0034] Through the setting of the switch mechanism, the cooperation of the operation panel, the main switch and the separate switch arranged on the operation panel, and the controller, the relay and the thyristor circuit board arranged in the back of the front shell, during use, the thyristor is used to turn on the circuit first, so that the electric spark caused by the direct connection of the mechanical circuit is avoided, then the thyristor is disconnected after the other switches are turned on, so that the safe circuit on-circuit is realized, and the service life of the thyristor is also improved due to the short-time use of the thyristor;

[0035] When in use, use a bolt to pass through the through hole on one side of the bracket, and use the bolt to fix the two brackets to the wall. Then, insert the two fixing plates on the back of the solar inverter body into the connecting groove from top to bottom, and use the roller to roll the connecting groove to install the solar inverter body. After the insertion is completed, tighten the first bolt so that one end of the first bolt is inserted into the first pin hole, thereby limiting the fixing plate, and the outer wall of the fixing plate is adapted to the inner wall of the connecting groove, which can ensure that after the installation is completed, the solar inverter The body will not shake, and when disassembling, you only need to unscrew the first bolt, drag the solar inverter body upwards, and take out the solar inverter body through the roller. The setting of the roller can make disassembly and assembly more convenient and play an auxiliary effect. After the installation of the solar inverter body is completed, one end of the support frame is inserted into the slot, and then the second bolt is screwed on, and one end of the second bolt is inserted into the second pin hole to limit and fix the support frame, and one end of the support frame is fixedly connected to the cover plate. The setting of the cover plate can protect the solar inverter body.

[0036] Details of one or more embodiments of the present application are presented in the following drawings and descriptions to make other features, purposes and advantages of the present application more concise and easy to understand, and the present application is fully described and understood through the embodiments of the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0037] Figure 1 It is a structural schematic diagram of the present invention;

[0038] Figure 2 This is a schematic diagram of the sealing structure connection of the present invention;

[0039] Figure 3 Schematic diagram of the back shell of the present invention Figure 1 ;

[0040] Figure 4 Schematic diagram of the back shell of the present invention Figure 2 ;

[0041] Figure 5 This is a schematic diagram of the second connecting component on the back of the front housing of the present invention;

[0042] Figure 6 It is a schematic structural diagram of the fixing frame of the present invention;

[0043] Figure 7 This is a schematic diagram of the structure of the fixing plate and the bracket used in conjunction with each other in the present invention;

[0044] Figure 8 It is a schematic structural diagram of the protection mechanism of the present invention;

[0045] Figure 9 This is a schematic diagram of the switch mechanism circuit module of the present invention;

[0046] Figure 10 It is a cross-sectional view of the cover shell of the present invention.

[0047] In the figure: 1, rear housing; 11, mounting base; 12, front housing; 13, wiring port; 14, sealing ring; 15, heat conducting rod;

[0048] 2. First connecting assembly; 21. Connecting side panel; 22. First slot; 23. Second slot; 24. Limit frame; 25. Bottom plate; 26. Insert strip; 27. Third slot; 28. Sealing gasket; 29. ​​Bolt mounting port;

[0049] 3. Second connecting assembly; 31. First plug rod; 32. Second plug rod; 33. Clamping plate; 34. Insertion shaft; 35. Fourth slot; 36. Protective top plate; 37. Sealing strip; 38. Limiting rod;

[0050] 4. Connecting mechanism;

[0051] 5. Switch mechanism; 51. Operation panel; 52. Main switch; 53. Sub-switch; 54. Controller; 55. Relay; 56. Thyristor circuit board; 57. Cover; 58. Operation button; 59. Operation protrusion; 60. Operation slot;

[0052] 63. Fixing plate; 64. Fixing groove; 65. Roller; 66. First pin hole; 67. Bracket; 68. Connecting groove; 69. Slide groove; 610. First bolt; 611. Through hole; 612. Slot; 613. Second bolt; 614. Support frame; 615. Second pin hole; 616. Cover plate. DETAILED DESCRIPTION

[0053] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0054] See also Figure 1-9 The present invention provides a technical solution: a durable and stable solar inverter, comprising a housing and a solar inverter body fixedly arranged in the housing, the housing comprising a rear housing and a front housing that cooperate with each other, a connecting mechanism being provided between the rear housing and the front housing, the connecting mechanism comprising a first connecting component and a second connecting component, the first connecting component being provided on the rear housing, the second connecting component being provided on the front housing, a switch mechanism being provided on the outer surface of the front housing, and a fixing mechanism being provided on the rear housing for installation at an external preset position.

[0055] By setting a sealing gasket between the front and rear shells of the photovoltaic inverter and adding a connecting mechanism, the front shell is slidably connected to the connecting side plate, and the bottom and top of the photovoltaic inverter shell are protected respectively by the bottom plate and the protective top plate, which greatly improves the connection sealing of the photovoltaic inverter shell.

[0056] Through the arrangement of the switch mechanism, the operation panel, the main switch and sub-switches arranged on the operation panel, and the controller, relay and thyristor circuit board arranged on the back of the front shell, when in use, the circuit is first connected through the thyristor, avoiding the electric spark caused by direct connection of the mechanical circuit. Then, after the other switches are turned on, the thyristor is disconnected to achieve safe circuit conduction. At the same time, the short-term use of the thyristor can also extend the service life of the thyristor.

[0057] By providing the fixing mechanism, the rear shell can be conveniently fixed and installed.

[0058] The switch mechanism includes an operation panel, a main switch and a sub-switch arranged on the operation panel, and a controller, a relay and a thyristor circuit board arranged on the back of the front shell. One end of the main switch is connected to the power output end of the solar inverter body, and the other end of the main switch is respectively connected to the input end of the thyristor circuit board, one end of the sub-switch, and one end of the normally open contact of the relay. The output end of the thyristor circuit board, the other end of the sub-switch and the other end of the normally open contact of the relay are connected to each other and set as the external output end of the power supply. The control end of the thyristor circuit and the control end of the relay coil are respectively connected to an output end of the controller. During operation, the controller first controls the relay to disconnect, simultaneously opening the thyristor. The main switch is then closed, and the controller controls the thyristor to conduct. Finally, based on usage requirements, either the relay or the sub-switch is selected to conduct the circuit. After the relay or sub-switch is conducted, the controller controls the thyristor to disconnect, completing the entire circuit conduction process. To disconnect the circuit or perform inverter maintenance, the controller first controls the thyristor to conduct the circuit, then disconnects the relay or sub-switch, then controls the thyristor to disconnect the circuit, and finally disconnects the main switch to complete the circuit disconnection. By configuring the relay and sub-switch, the conduction switch can be freely selected based on the power requirements of the circuit being used.

[0059] The fixing mechanism includes a fixing plate, a fixing groove, a roller, a first pin hole, a bracket, a connecting groove, a slide groove and a first bolt. The back of the solar inverter body is fixedly connected to the fixing plate, a fixing groove is provided on one side of the fixing plate, and a roller is rotatably connected to the inner side of the fixing groove. A first pin hole is provided on the outer side of the fixing plate, and a bracket is provided on the outer side of the fixing plate. A connecting groove is provided on the back of the bracket, and a slide groove is provided on the inner cavity side wall of the connecting groove. Some threads of the bracket are penetrated and connected with the first bolt, and the fixing plate is fixedly connected to the bracket through the first bolt.

[0060] When in use, a bolt is passed through the through hole opened on one side of the bracket, and the two brackets are fixedly connected to the wall with the bolts. Then, the two fixing plates on the back of the solar inverter body are inserted into the connecting groove from top to bottom, and the connecting groove is rolled by the roller to install the solar inverter body. After the insertion is completed, the first bolt is screwed so that one end of the first bolt is inserted into the first pin hole, thereby limiting the fixing plate, and the outer wall of the fixing plate is adapted to the inner wall of the connecting groove, which can ensure that the solar inverter body will not shake after the installation is completed. When disassembling, it is only necessary to unscrew the first bolt, drag the solar inverter body upwards, and take out the solar inverter body through the roller. The setting of the roller can make disassembly and assembly more convenient and play an auxiliary effect.

[0061] Furthermore, in the specific implementation process, the first connecting component includes a connecting side plate and a limit frame, the connecting side plate and the limit frame are respectively fixedly installed on the front end of the rear shell, the top of the connecting side plate is an open end, the connecting side plate is used to slide connected to the front shell, the limit frame is not only used to guide the second plug rod, but also to increase the sealing inside the rear shell, a sealing gasket is provided at the front end of the limit frame, and a sealing gasket is used to increase the sealing of the limit frame, the sealing gasket is connected to the limit frame by bonding, and the front shell will not fall off when the sliding installation is performed, and a first slot is provided on both side ends of the connecting side plate, the first slot is used to guide the insertion of the first plug rod, and the connecting side plate A second slot is provided between the limit frame and the second slot, and the second slot is used to guide the insertion of the second plug rod. Bolt mounting holes are also provided on both side ends of the connecting side plate. After the card plate is clamped to the outer side of the connecting side plate, bolts are installed through the bolt mounting holes to fix the card plate to the connecting side plate. The bottom of the connecting side plate is fixedly installed with a bottom plate. The bottom plate is not only used to protect the bottom of the connection between the rear shell and the front shell, but also used to seal and protect the bottom of the first slot and the second slot. A horizontal insertion strip is fixedly installed on the top of the bottom plate, and the insertion strip is used to fit into the fourth slot at the bottom of the front shell. A third slot is provided on the inner wall of the bottom of the connecting side plate, and the third slot is used for plugging the insertion shaft.

[0062] The second connecting assembly includes a first plug rod, a second plug rod and a card plate, the first plug rod and the second plug rod are respectively fixedly installed on the inner side of the front shell, and the first plug rod and the second plug rod are engaged with the connecting side plate to guide the front shell. Card plates are fixedly provided on both sides of the front shell, and the card plates are engaged with the outer sides of the connecting side plates to connect and seal the connecting side plates. A protective top plate is fixedly installed on the top of the front shell, and the protective top plate is used to protect the top of the connection between the rear shell and the front shell. A sealing strip is provided on the inner wall of the protective top plate, and the sealing of the protective top plate is increased by the sealing strip. A limiting rod is fixedly installed on the top of the second plug rod, and the limiting rod is used to engage and engage with the top of the limiting frame. The bottom of the second plug rod is fixedly installed with a plug shaft, and the plug shaft is engaged and inserted into the third slot. A fourth slot is provided at the bottom of the front shell;

[0063] Furthermore, a mounting base is welded to the rear end of the rear shell, and the mounting base is used to install bolts so that the photovoltaic inverter housing can be installed to the designated installation position. A wiring port is opened at the bottom of the rear shell, and the wiring port is used to install the connector of the components in the photovoltaic inverter housing. After the connector is installed, it is sealed by a sealing ring. A sealing ring is set in the wiring port. A heat-conducting rod is fixedly installed at the bottom of the rear shell. There are multiple heat-conducting rods for conducting heat and dissipating heat inside the photovoltaic inverter housing.

[0064] Furthermore, in a specific implementation process, a through hole is opened through one side of the bracket, and two through holes are provided.

[0065] The outer wall of the fixing plate is adapted to the inner wall of the connecting groove, and the outer wall of the roller is fitted to the inner wall of the sliding groove.

[0066] In order to better protect the solar inverter body, a protective mechanism is provided on the top of the bracket, which includes a slot, a second bolt, a support frame, a second pin hole and a cover plate. A slot is provided on the top of the bracket, and a second bolt is threaded through one side of the slot, and the support frame is inserted into the inner side of the slot. A second pin hole is provided on the outside of one end of the support frame, and one end of the support frame is fixedly connected to the cover plate. After the solar inverter body is installed, one end of the support frame is inserted into the slot, and then the second bolt is tightened, and one end of the second bolt is inserted into the second pin hole, so as to limit and fix the support frame, and one end of the support frame is fixedly connected to the cover plate. The setting of the cover plate can protect the solar inverter body.

[0067] The support frame is fixedly connected to the bracket via a second bolt, and the inner wall size of the slot is adapted to the outer wall of one end of the support frame.

[0068] Furthermore, a cover is provided on the outside of the operation panel, one end of the cover is hinged to the outer surface of the front shell, and a lock is provided between the other end of the cover and the outer surface of the front shell. The control panel can be covered by the cover to prevent unauthorized personnel from operating the inverter.

[0069] Based on this solution, in actual application, in order to reduce the rate of misoperation, an operating groove is provided inside the front shell near the axis hinged to the cover shell, an operating button is provided in the operating groove, and an operating protrusion is provided on the cover shell at the hinge axis connected to the front shell, the operating protrusion cooperates with the operating button, and the operating protrusion is connected to the input end of the controller; finally, in order to improve the concealment of the main switch, the main switch is installed in another position, and the main switch is installed in a separate position;

[0070] When in use, the main switch is closed before power is turned on, and the main switch is opened last after power is turned off, so as to realize the use order of the main switch;

[0071] Then, for the switching of the relay or the sub-switch, as well as for temporary maintenance or switching of the output load, you only need to open the cover first, and drive the operating protrusion to press the operating button by rotating the cover, so that the triggering operating button outputs a signal to the controller, and the controller can control the thyristor to be turned on, and the circuit is turned on in series, and then the on-off switching of the relay and the sub-switch can be realized; and after the operation is completed, you only need to close the cover to restore the operating button to its original state, the operating button disconnects the signal output, and the controller disconnects the control of the thyristor, so that the thyristor disconnects the circuit, that is, the continuous conduction of the entire circuit is realized through the relay or the sub-switch; by coordinating the cover, the operating protrusion and the operating button, the thyristor can be controlled by opening the cover, avoiding the staff's misoperation, and operating the relay or the sub-switch when the thyristor is not controlled, reducing the problem of unnecessary situations.

[0072] Through the technical solution of the present application, a method for using a durable and stable solar inverter is provided. According to the solar inverter, the steps are as follows:

[0073] (1) First, fix the rear shell at the preset position, pass the bolts through the through hole on one side of the bracket, and fix the two brackets to the wall with bolts;

[0074] (2) Then insert the two fixing plates on the back of the rear shell into the connecting groove from top to bottom, and use the rollers to roll the connecting grooves to install the rear shell;

[0075] (3) After the plug-in is completed, the first bolt is tightened so that one end of the first bolt is inserted into the first pin hole, thereby limiting the position of the fixing plate so that the outer wall of the fixing plate is adapted to the inner wall of the connecting groove;

[0076] (4) After the rear shell is installed, insert one end of the support frame into the slot, then screw on the second bolt, and insert one end of the second bolt into the second pin hole to limit and fix the support frame. One end of the support frame is fixedly connected to the cover plate, and the cover plate is used to cover and protect the outer shell;

[0077] (5) After the installation is completed, fix the solar inverter body into the rear shell;

[0078] (6) Then connect the output terminal on the solar inverter body to the main switch input terminal on the front shell, and disconnect the main switch;

[0079] (7) Finally, slide the front shell from the top of the rear shell to install it. Slide the first plug rod on the front shell into the first slot, slide the second plug rod into the second slot, insert the plug shaft at the bottom of the second plug rod into the third slot, and insert the plug strip into the fourth slot at the bottom of the front shell, so that the limit rod is used to fit and snap into the top of the limit frame.

[0080] (8) Protect the top of the connection between the rear shell and the front shell by using a protective top plate;

[0081] (9) After the card is clamped to the outside of the connecting side plate, install the bolts through the bolt installation opening to fix the card to the connecting side plate;

[0082] (10) After the overall assembly is completed, when in use, first control the relay switch to be disconnected through the controller, and at the same time, the thyristor is disconnected;

[0083] (11) Then close the main switch and control the thyristor to conduct through the controller;

[0084] (12) Finally, according to the use requirements, select the relay conduction circuit or the switch conduction circuit;

[0085] (13) After the relay turns on the circuit or the sub-switch turns on the circuit, the controller controls the thyristor to turn off, thus completing the overall circuit conduction process;

[0086] (14) When the circuit needs to be disconnected or the inverter needs maintenance, first control the thyristor to conduct the circuit through the controller, then disconnect the relay or the sub-switch, then control the thyristor to disconnect the circuit through the controller, and finally disconnect the main switch to complete the circuit disconnection;

[0087] (15) After the circuit is disconnected, slide the front shell off the rear shell to perform maintenance on the solar inverter;

[0088] (16) When the rear shell needs to be disassembled, based on step (15), it is only necessary to unscrew the first bolt, drag the rear shell upward, and take out the rear shell through the roller. The setting of the roller can make disassembly and assembly more convenient and play an auxiliary role.

[0089] The above embodiments merely represent several implementation methods of the present application. While the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the present invention. It should be noted that a person skilled in the art could make various modifications and improvements without departing from the spirit of the present application, all of which fall within the scope of protection of the present application. Therefore, the scope of protection of the present patent application shall be determined by the appended claims.

[0090] While embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions, and variations may be made to these embodiments without departing from the principles and spirit of the invention, and that the scope of the invention is defined by the appended claims and their equivalents.

Claims

1. A durable and stable solar inverter, characterized by: The solar inverter comprises a housing and a solar inverter body fixedly arranged in the housing, wherein the housing comprises a rear housing and a front housing that cooperate with each other, a connecting mechanism is provided between the rear housing and the front housing, the connecting mechanism comprises a first connecting component and a second connecting component, the first connecting component is provided on the rear housing, the second connecting component is provided on the front housing, a switch mechanism is provided on the outer surface of the front housing, and a fixing mechanism for installation at an external preset position is provided on the rear housing. The switch mechanism includes an operation panel, a main switch and a sub-switch arranged on the operation panel, and a controller, a relay, and a thyristor circuit board arranged on the back of the front shell. One end of the main switch is connected to the power output end of the solar inverter body, and the other end of the main switch is respectively connected to the input end of the thyristor circuit board, one end of the sub-switch, and one end of the normally open contact of the relay. The output end of the thyristor circuit board, the other end of the sub-switch, and the other end of the normally open contact of the relay are connected to each other and set as the external output end of the power supply. The control end of the thyristor circuit and the control end of the relay coil are respectively connected to an output end of the controller. The fixing mechanism includes a fixing plate, a fixing groove, a roller, a first pin hole, a bracket, a connecting groove, a slide groove and a first bolt. The back of the solar inverter body is fixedly connected to the fixing plate, a fixing groove is provided on one side of the fixing plate, a roller is rotatably connected to the inner side of the fixing groove, a first pin hole is provided on the outer side of the fixing plate, a bracket is provided on the outer side of the fixing plate, a connecting groove is provided on the back of the bracket, a slide groove is provided on the inner side wall of the connecting groove, some threads of the bracket are penetrated and connected with the first bolt, and the fixing plate is fixedly connected to the bracket through the first bolt. The first connecting component includes a connecting side plate and a limiting frame, the connecting side plate and the limiting frame are respectively fixedly mounted on the front end of the rear shell, the top of the connecting side plate is an open end, the front end of the limiting frame is provided with a sealing gasket, both side ends of the connecting side plate are provided with a first slot, a second slot is provided between the connecting side plate and the limiting frame, and both side ends of the connecting side plate are further provided with a bolt mounting opening, the bottom of the connecting side plate is fixedly mounted on the bottom plate, a horizontal insert is fixedly mounted on the top of the bottom plate, and a third slot is provided on the inner wall of the bottom of the connecting side plate. The second connecting component includes a first plug rod, a second plug rod and a clamping plate. The first plug rod and the second plug rod are respectively fixedly installed on the inner side of the front shell. The clamping plates are fixedly installed on both sides of the front shell. A protective top plate is fixedly installed on the top of the front shell. A sealing strip is provided on the inner wall of the protective top plate. A limiting rod is fixedly installed on the top of the second plug rod, and an insertion shaft is fixedly installed on the bottom of the second plug rod. A fourth slot is provided at the bottom of the front shell.

2. A durable and stable solar inverter according to claim 1, characterized in that: A mounting seat is welded to the rear end of the rear shell, a wiring port is opened at the bottom of the rear shell, a sealing ring is arranged in the wiring port, and a heat conducting rod is fixedly installed at the bottom of the rear shell.

3. The durable and stable solar inverter according to claim 1, characterized in that: A through hole is formed on one side of the bracket, and two through holes are provided.

4. The durable and stable solar inverter according to claim 1, characterized in that: The outer wall of the fixing plate is adapted to the inner wall of the connecting groove, and the outer wall of the roller is fitted to the inner wall of the sliding groove.

5. The durable and stable solar inverter according to claim 1, characterized in that: A protective mechanism is provided on the top of the bracket, and the protective mechanism includes a slot, a second bolt, a support frame, a second pin hole and a cover plate. A slot is provided on the top of the bracket, a second bolt is threaded through one side of the slot, a support frame is inserted into the inner side of the slot, a second pin hole is provided on the outside of one end of the support frame, a cover plate is fixedly connected to one end of the support frame, and the support frame is fixedly connected to the bracket by the second bolt, and the inner wall size of the slot is adapted to the outer wall of one end of the support frame.

6. The durable and stable solar inverter according to claim 1, characterized in that: A cover shell is provided on the outside of the operation panel. One end of the cover shell is hinged to the outer surface of the front shell, and a lock is provided between the other end of the cover shell and the outer surface of the front shell.

7. A durable and stable solar inverter according to claim 6, characterized in that: An operating groove is provided inside the front shell near the axis hinged to the cover shell, an operating button is provided in the operating groove, and an operating protrusion is provided on the cover shell at the hinge axis connected to the front shell, and the operating protrusion cooperates with the operating button.

8. A method for using a durable and stable solar inverter, characterized by: The solar inverter according to any one of claims 1 to 7, wherein the steps are: (1) First, fix the rear shell at the preset position, pass the bolts through the through hole on one side of the bracket, and fix the two brackets to the wall with bolts; (2) Then insert the two fixing plates on the back of the rear shell into the connecting groove from top to bottom, and use the rollers to roll the connecting grooves to install the rear shell; (3) After the plug-in is completed, the first bolt is tightened so that one end of the first bolt is inserted into the first pin hole, thereby limiting the position of the fixing plate so that the outer wall of the fixing plate is adapted to the inner wall of the connecting groove; (4) After the rear shell is installed, insert one end of the support frame into the slot, then screw on the second bolt, and insert one end of the second bolt into the second pin hole to limit and fix the support frame. One end of the support frame is fixedly connected to the cover plate, and the cover plate is used to cover and protect the outer shell; (5) After the installation is completed, fix the solar inverter body into the rear shell; (6) Then connect the output terminal on the solar inverter body to the main switch input terminal on the front shell, and disconnect the main switch; (7) Finally, slide the front shell from the top of the rear shell to install it. Slide the first plug rod on the front shell into the first slot, slide the second plug rod into the second slot, insert the plug shaft at the bottom of the second plug rod into the third slot, and insert the plug strip into the fourth slot at the bottom of the front shell, so that the limit rod is used to fit and snap into the top of the limit frame. (8) Protect the top of the connection between the rear shell and the front shell by using a protective top plate; (9) After the card is clamped to the outside of the connecting side plate, install the bolts through the bolt installation opening to fix the card to the connecting side plate; (10) After the overall assembly is completed, when in use, first control the relay switch to be disconnected through the controller, and at the same time, the thyristor is disconnected; (11) Then close the main switch and control the thyristor to conduct through the controller; (12) Finally, according to the use requirements, select the relay conduction circuit or the switch conduction circuit; (13) After the relay turns on the circuit or the sub-switch turns on the circuit, the controller controls the thyristor to turn off, thus completing the overall circuit conduction process; (14) When the circuit needs to be disconnected or the inverter needs maintenance, first control the thyristor to conduct the circuit through the controller, then disconnect the relay or the sub-switch, then control the thyristor to disconnect the circuit through the controller, and finally disconnect the main switch to complete the circuit disconnection; (15) After the circuit is disconnected, slide the front shell off the rear shell to perform maintenance on the solar inverter; (16) When the rear shell needs to be disassembled, based on step (15), it is only necessary to unscrew the first bolt, drag the rear shell upward, and take out the rear shell through the roller. The setting of the roller can make disassembly and assembly more convenient and play an auxiliary role.

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