Solid-state transfer switch and control method and apparatus therefor, and readable storage medium

Abstract

The present application relates to the technical field of switch control. Provided are a solid-state transfer switch and a control method and apparatus therefor, and a readable storage medium. The solid-state transfer switch is used for controlling connection / disconnection between an alternating-current power source and a load. The solid-state transfer switch comprises: an input terminal, which is connected to an alternating-current power source; an output terminal, which is connected to a load; and a switch module, wherein one end of the switch module is connected to the input terminal, and the other end of the switch module is connected to the output terminal. The switch module comprises a first semiconductor device and a second semiconductor device, which are devices that each include an insulated gate bipolar transistor, wherein when the first semiconductor device and the second semiconductor device are both in a locked state, the switch module disconnects the input terminal from the output terminal, and when the first semiconductor device and the second semiconductor device are both in a turned-on state, the switch module connects the input terminal to the output terminal.

Description

Solid-state switch, control method thereof, control device and readable storage medium

[0001] This application claims priority to the Chinese patent application filed with the State Intellectual Property Office of China on June 19, 2023, with application number "202310720990.5" and application name "Solid-state switching switch and its control method, control device and readable storage medium", the entire contents of which are incorporated by reference into this application. Technical Field

[0002] The present application relates to the field of switch control technology, and in particular to a solid-state switching switch and a control method, a control device, and a readable storage medium thereof. Background Art

[0003] The power supply system needs to ensure reliable power supply to the load. Therefore, the power supply system is equipped with multiple power sources such as the power grid and batteries. In the event of a power outage or failure in the power grid, the load can be powered by the battery. At present, mechanical switches can be deployed in the power supply system to switch the power supply through the mechanical switches. However, the current mechanical switches have problems such as slow switching speed and inability to ensure synchronization.

[0004] Summary of the Invention

[0005] The present application aims to at least solve the technical problems in the prior art or related art, such as slow switch switching speed and inability to ensure synchronization.

[0006] To this end, a first aspect of the present application is to provide a solid-state switch.

[0007] A second aspect of the present application is to provide a control method for a solid-state switch.

[0008] A third aspect of the present application is to provide a control device for a solid-state switch.

[0009] A fourth aspect of the present application is to provide a readable storage medium.

[0010] In view of this, according to the first aspect of the present application, a solid-state switching switch is proposed, which is used to control the on and off between an AC power supply and a load. The solid-state switching switch includes: an input terminal, which is connected to the AC power supply; an output terminal, which is connected to the load; a switch module, one end of the switch module is connected to the input terminal, and the other end of the switch module is connected to the output terminal; wherein the switch module includes a first semiconductor device and a second semiconductor device, and the first semiconductor device and the second semiconductor device are devices including insulated gate bipolar transistors; when the first semiconductor device and the second semiconductor device are both in a locked state, the switch module disconnects the input terminal and the output terminal; when the first semiconductor device and the second semiconductor device are both in a conductive state, the switch module connects the input terminal and the output terminal.

[0011] The solid-state switching switch in the present technical solution includes an input terminal and an output terminal, the input terminal is connected to the AC power supply, and the output terminal is connected to the load. The solid-state switching switch also includes a switch module, one end of the switch module is connected to the input terminal, and the other end of the switch module is connected to the output terminal. When the first semiconductor device and the second semiconductor device are both in a locked state, the switch module can disconnect the input terminal and the output terminal. When the first semiconductor device and the second semiconductor device are both in a conductive state, the switch module can connect the input terminal and the output terminal, which greatly reduces the state switching time of the switch module, improves the state switching speed of the switch module, and simplifies the circuit structure of the solid-state switching switch.

[0012] According to the second aspect of the present application, a control method for a solid-state switching switch is proposed, the solid-state switching switch is the solid-state switching switch of the first aspect, the solid-state switching switch is used to control the power supply system, the power supply system is used to power the load, the power supply system includes an energy storage inverter, a battery, a power grid and a solid-state switching switch, the solid-state switching switch is connected to the power grid, the energy storage inverter is connected to the battery, the solid-state switching switch is connected to the energy storage inverter, and the load is connected to the solid-state switching switch and the energy storage inverter respectively. The control method of the solid-state switching switch includes: when the power grid is in a power supply state, closing the solid-state switching switch and powering the load through the power grid; when the power grid is in a power-off state, disconnecting the solid-state switching switch and powering the load through the energy storage inverter and the battery.

[0013] The control method of the solid-state switching switch in the present technical solution closes the solid-state switching switch when the power grid is in a power supply state, connects the power grid and the load, and supplies power to the load through the power grid; when the power grid is in a power-off state, the power supply system disconnects the solid-state switching switch, disconnects the power grid and the load, starts the energy storage converter, and supplies power to the load through the energy storage converter and the battery, which greatly shortens the power switching time of the power supply system, improves the power switching speed of the power supply system, and ensures the operational stability of the power supply system.

[0014] According to a third aspect of the present application, a control device for a solid-state switch is provided, comprising a processor and a memory. The memory stores a program or instructions, which, when executed by the processor, implement the steps of the solid-state switch control method described in any of the above-mentioned technical solutions. Therefore, the control device for a solid-state switch has all the beneficial effects of the solid-state switch control method described in any of the above-mentioned technical solutions, and no further details are given here.

[0015] According to a fourth aspect of the present application, a readable storage medium is provided, storing a program or instructions thereon. When executed by a processor, the program or instructions implement the solid-state switch control method described in any of the above technical solutions. Therefore, the readable storage medium possesses all the beneficial effects of the solid-state switch control method described in any of the above technical solutions, and further description thereof is omitted here.

[0016] Additional aspects and advantages of the present application will become apparent in the following description or may be learned through practice of the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The above and / or additional aspects and advantages of the present application will become apparent and easily understood from the description of the embodiments in conjunction with the following drawings, in which:

[0018] FIG1 shows one circuit diagram of a solid-state switch in an embodiment of the present application;

[0019] FIG2 shows a second circuit diagram of a solid-state switch in an embodiment of the present application;

[0020] FIG3 shows a third circuit diagram of a solid-state switch in an embodiment of the present application;

[0021] FIG4 shows one of the flow charts of the control method of the solid-state switch in the embodiment of the present application;

[0022] FIG5 shows a second flow chart of a control method for a solid-state switch in an embodiment of the present application;

[0023] FIG6 shows a third flow chart of a control method for a solid-state switch in an embodiment of the present application;

[0024] FIG7 shows a fourth flow chart of a control method for a solid-state switch in an embodiment of the present application;

[0025] FIG8 shows one structural block diagram of a control device for a solid-state switch in an embodiment of the present application;

[0026] FIG9 shows one of the schematic diagrams of a control device for a solid-state switch in an embodiment of the present application;

[0027] FIG10 shows a second schematic diagram of the control device of the solid-state switch in an embodiment of the present application;

[0028] FIG11 shows a second structural block diagram of the control device of the solid-state switch in an embodiment of the present application;

[0029] 1 , 2 , and 3 , the correspondence between the reference numerals and component names is as follows: 100 solid-state switching switch, 102 input terminal, 104 output terminal, 106 switch module, 108 first semiconductor device, 110 second semiconductor device, 1082 first insulated gate bipolar transistor, 1102 second insulated gate bipolar transistor, 1084 first diode, 1104 second diode. DETAILED DESCRIPTION

[0030] In order to more clearly understand the above-mentioned objects, features and advantages of the present application, the present application is further described in detail below in conjunction with the accompanying drawings and specific embodiments. It should be noted that the embodiments of the present application and the features therein can be combined with each other in the absence of conflict.

[0031] In the following description, many specific details are set forth to facilitate a full understanding of the present application. However, the present application may also be implemented in other ways different from those described herein. Therefore, the scope of protection of the present application is not limited to the specific embodiments disclosed below.

[0032] 1 to 11 , the solid-state switching switch and its control method, control device, and readable storage medium provided in the embodiments of the present application are described in detail through specific embodiments and their application scenarios.

[0033] In one embodiment of the present application, as shown in FIG1 , a solid-state switch 100 is provided. The solid-state switch 100 includes:

[0034] Input terminal 102, input terminal 102 is connected to the AC power supply;

[0035] An output terminal 104 , the output terminal 104 is connected to a load;

[0036] A switch module 106 , where one end of the switch module 106 is connected to the input terminal 102 , and the other end of the switch module 106 is connected to the output terminal 104 ;

[0037] The switch module 106 includes a first semiconductor device 108 and a second semiconductor device 110 , and the first semiconductor device 108 and the second semiconductor device 110 are devices including insulated gate bipolar transistors;

[0038] When the first semiconductor device 108 and the second semiconductor device 110 are both in the locked state, the switch module 106 disconnects the input terminal 102 and the output terminal 104 ; when the first semiconductor device 108 and the second semiconductor device 110 are both in the turned-on state, the switch module 106 connects the input terminal 102 and the output terminal 104 .

[0039] In this embodiment, a solid-state switch 100 is provided. The solid-state switch 100 is connected to an AC power source and a load, respectively, and is used to control the on / off switching between the AC power source and the load.

[0040] For example, the AC power source may be an AC power grid, and the load may be industrial equipment.

[0041] Exemplarily, the solid-state switch 100 may be used to control a power supply system, which includes multiple power supplies. The solid-state switch 100 may be used to switch the multiple power supplies in the power supply system.

[0042] The solid-state switching switch 100 includes an input terminal 102 and an output terminal 104 . The input terminal 102 is connected to an AC power source, and the output terminal 104 is connected to a load. The input terminal 102 is an input port of the solid-state switching switch 100 , and the output terminal 104 is an output port of the solid-state switching switch 100 .

[0043] Exemplarily, the input terminal 102 may be specifically an A-phase current input port, a B-phase current input port, or a C-phase current input port.

[0044] Exemplarily, the output terminal 104 may be specifically an A-phase current output port, a B-phase current output port, or a C-phase current output port.

[0045] The solid-state switch 100 further includes a switch module 106 , one end of which is connected to the input terminal 102 , and the other end of which is connected to the output terminal 104 . The switch module 106 is a module capable of switching a switching state.

[0046] The switch module 106 includes a first semiconductor device 108 and a second semiconductor device 110 . The first semiconductor device 108 and the second semiconductor device 110 are devices including insulated gate bipolar transistors.

[0047] For example, the switch module 106 may specifically include two insulated gate bipolar transistors, and the two insulated gate bipolar transistors may be in an anti-series or anti-parallel structure.

[0048] It should be noted that a conventional switching switch includes a thyristor, which is used to realize the state switching of the switch. The switching time of the thyristor exceeds 20ms, while the switching time of the insulated gate bipolar transistor can reach within 5ms, and the response speed is faster. Therefore, by including the first semiconductor device 108 and the second semiconductor device 110 of the insulated gate bipolar transistor, the state switching time of the switch module 106 is greatly reduced, thereby improving the state switching speed of the switch module 106.

[0049] When the first semiconductor device 108 and the second semiconductor device 110 are both in the locked state, the switch module 106 can disconnect the input terminal 102 and the output terminal 104. When the first semiconductor device 108 and the second semiconductor device 110 are both in the turned-on state, the switch module 106 can connect the input terminal 102 and the output terminal 104.

[0050] It should be noted that a conventional switching switch still needs to be provided with an absorption circuit, but the solid-state switching switch 100 in this embodiment does not need to be provided with an absorption circuit, thereby simplifying the internal structure of the solid-state switching switch 100.

[0051] For example, the first semiconductor device 108 and the second semiconductor device 110 may be specifically connected in parallel.

[0052] For example, the first semiconductor device 108 and the second semiconductor device 110 may be specifically connected in series.

[0053] The solid-state switching switch 100 in this embodiment includes an input terminal 102 and an output terminal 104. The input terminal 102 is connected to an AC power source, and the output terminal 104 is connected to a load. The solid-state switching switch 100 also includes a switch module 106. One end of the switch module 106 is connected to the input terminal 102, and the other end of the switch module 106 is connected to the output terminal 104. When the first semiconductor device 108 and the second semiconductor device 110 are both in a locked state, the switch module 106 can disconnect the input terminal 102 and the output terminal 104. When the first semiconductor device 108 and the second semiconductor device 110 are both in a conductive state, the switch module 106 can connect the input terminal 102 and the output terminal 104. This greatly reduces the state switching time of the switch module 106, improves the state switching speed of the switch module 106, and simplifies the circuit structure of the solid-state switching switch 100.

[0054] In one embodiment of the present application, a solid-state switch 100 is provided. When the first semiconductor device 108 and the second semiconductor device 110 are both in the on state, the switch module 106 is used to transmit the current input through the input terminal 102 to the output terminal 104, and transmit the current input through the output terminal 104 to the input terminal 102;

[0055] When the first semiconductor device 108 and the second semiconductor device 110 are both in the latched state, the switch module 106 is configured to block the current input through the input terminal 102 and the output terminal 104 .

[0056] In this embodiment, when the first semiconductor device 108 and the second semiconductor device 110 are both in the on state, the switch module 106 is in the on state, and the switch module 106 is capable of transmitting the current input through the input terminal 102 to the output terminal 104, and transmitting the current input through the output terminal 104 to the input terminal 102.

[0057] Exemplarily, the first semiconductor device 108 and the second semiconductor device 110 are both switched to the on state, thereby switching the solid-state switch 100 to the on state.

[0058] When the first semiconductor device 108 and the second semiconductor device 110 are both in the latched state, the switch module 106 is in the open state, and the switch module 106 can block the current input through the input terminal 102 and the output terminal 104 .

[0059] Exemplarily, the first semiconductor device 108 and the second semiconductor device 110 are both switched to the latched state, thereby switching the solid-state switch 100 to the open state.

[0060] In the solid-state switching switch 100 of this embodiment, when the first semiconductor device 108 and the second semiconductor device 110 are both in the on state, the switch module 106 is in the on state. The switch module 106 can transmit the current input through the input terminal 102 to the output terminal 104, and transmit the current input through the output terminal 104 to the input terminal 102. When the first semiconductor device 108 and the second semiconductor device 110 are both in the locked state, the switch module 106 is in the off state. The switch module 106 can block the current input through the input terminal 102 and the output terminal 104, thereby improving the state switching speed of the switch module 106, thereby improving the state switching speed of the solid-state switching switch 100, and simplifying the circuit structure of the solid-state switching switch 100.

[0061] In one embodiment of the present application, as shown in FIG2 , a solid-state switch 100 is provided, wherein the first semiconductor device 108 includes a first insulated gate bipolar transistor 1082 , wherein the collector of the first insulated gate bipolar transistor 1082 is connected to the input terminal 102 , and the emitter of the first insulated gate bipolar transistor 1082 is connected to the output terminal 104 ;

[0062] The second semiconductor device 110 includes a second insulated gate bipolar transistor 1102 . A collector of the second insulated gate bipolar transistor 1102 is connected to the output terminal 104 , and an emitter of the second insulated gate bipolar transistor 1102 is connected to the input terminal 102 .

[0063] In this embodiment, the first semiconductor device 108 includes a first insulated gate bipolar transistor 1082 therein, wherein the first insulated gate bipolar transistor 1082 is an insulated gate bipolar transistor inside the first semiconductor device 108 .

[0064] The collector of the first insulated gate bipolar transistor 1082 is connected to the input terminal 102 , and the emitter of the first insulated gate bipolar transistor 1082 is connected to the output terminal 104 .

[0065] For example, the first insulated gate bipolar transistor 1082 may transmit current input through the input terminal 102 to the output terminal 104 .

[0066] The second semiconductor device 110 includes a second insulated gate bipolar transistor 1102 therein, wherein the second insulated gate bipolar transistor 1102 is an insulated gate bipolar transistor inside the second semiconductor device 110 .

[0067] The emitter of the second insulated gate bipolar transistor 1102 is connected to the input terminal 102 , and the collector of the second insulated gate bipolar transistor 1102 is connected to the output terminal 104 .

[0068] For example, the second insulated gate bipolar transistor 1102 may transmit the current input through the output terminal 104 to the input terminal 102 .

[0069] In this embodiment, the first semiconductor device 108 of the solid-state switching switch 100 includes a first insulated gate bipolar transistor 1082, the collector of which is connected to the input terminal 102, and the emitter of which is connected to the output terminal 104. The second semiconductor device 110 includes a second insulated gate bipolar transistor 1102, the emitter of which is connected to the input terminal 102, and the collector of which is connected to the output terminal 104. This improves the state switching speed of the first semiconductor device 108 and the second semiconductor device 110, thereby improving the state switching speed of the solid-state switching switch 100.

[0070] In one embodiment of the present application, as shown in FIG3 , a solid-state switch 100 is provided. The first semiconductor device 108 includes a first insulated gate bipolar transistor 1082 and a first diode 1084 . The anode of the first diode 1084 is connected to the emitter of the first insulated gate bipolar transistor 1082 , and the cathode of the first diode 1084 is connected to the collector of the first insulated gate bipolar transistor 1082 .

[0071] The second semiconductor device 110 includes a second insulated gate bipolar transistor 1102 and a second diode 1104, wherein the anode of the second diode 1104 is connected to the collector of the second insulated gate bipolar transistor 1102, and the cathode of the second diode 1104 is connected to the emitter of the second insulated gate bipolar transistor 1102;

[0072] The collector of the first IGBT 1082 is connected to the collector of the second IGBT 1102 , the emitter of the first IGBT 1082 is connected to the output terminal 104 , and the emitter of the second IGBT 1102 is connected to the input terminal 102 .

[0073] In this embodiment, the first semiconductor device 108 includes a first insulated gate bipolar transistor 1082 and a first diode 1084, and the second semiconductor device 110 includes a second insulated gate bipolar transistor 1102 and a second diode 1104, wherein the first diode 1084 is a diode inside the first semiconductor device 108, and the second diode 1104 is a diode inside the second semiconductor device 110.

[0074] The anode of the first diode 1084 is connected to the emitter of the first insulated gate bipolar transistor 1082, the cathode of the first diode 1084 is connected to the collector of the first insulated gate bipolar transistor 1082, the anode of the second diode 1104 is connected to the collector of the second insulated gate bipolar transistor 1102, and the cathode of the second diode 1104 is connected to the emitter of the second insulated gate bipolar transistor 1102.

[0075] The collector of the first IGBT 1082 is connected to the collector of the second IGBT 1102 , the emitter of the first IGBT 1082 is connected to the output terminal 104 , and the emitter of the second IGBT 1102 is connected to the input terminal 102 .

[0076] For example, the first diode 1084 may transmit the current input through the output terminal 104 to the second insulated gate bipolar transistor 1102 , and the second insulated gate bipolar transistor 1102 may transmit the current input through the first diode 1084 to the input terminal 102 .

[0077] For example, the second diode 1104 may transmit the current input through the input terminal 102 to the first insulated gate bipolar transistor 1082 , and the first insulated gate bipolar transistor 1082 may transmit the current input through the second diode 1104 to the output terminal 104 .

[0078] In the present embodiment, the first semiconductor device 108 of the solid-state switch 100 includes a first insulated gate bipolar transistor 1082 and a first diode 1084. The second semiconductor device 110 includes a second insulated gate bipolar transistor 1102 and a second diode 1104. The anode of the first diode 1084 is connected to the emitter of the first insulated gate bipolar transistor 1082, the cathode of the first diode 1084 is connected to the collector of the first insulated gate bipolar transistor 1082, and the anode of the second diode 1104 is connected to the collector of the second insulated gate bipolar transistor 1102. The cathode of the second diode 1104 is connected to the emitter of the second insulated gate bipolar transistor 1102, the collector of the first insulated gate bipolar transistor 1082 is connected to the collector of the second insulated gate bipolar transistor 1102, the emitter of the first insulated gate bipolar transistor 1082 is connected to the output terminal 104, and the emitter of the second insulated gate bipolar transistor 1102 is connected to the input terminal 102, thereby improving the state switching speed of the first semiconductor device 108 and the second semiconductor device 110, thereby improving the state switching speed of the solid-state switching switch 100.

[0079] In one embodiment of the present application, as shown in FIG4 , a control method for a solid-state switch is proposed. The control method for the solid-state switch includes:

[0080] Step 402: When the grid is in a power supply state, close the solid-state switch to supply power to the load through the grid;

[0081] Step 404: When the power grid is in a power-off state, the solid-state switch is disconnected, and the load is supplied with power through the energy storage converter and the battery.

[0082] In this embodiment, a control method for a solid-state switching switch is provided, wherein the solid-state switching switch is the solid-state switching switch in any of the above embodiments, the solid-state switching switch is used to control a power supply system, the power supply system is a power supply device including multiple power sources, the power supply system is capable of supplying power to a load, the power supply system includes an energy storage inverter, a battery, a power grid and a solid-state switching switch, the solid-state switching switch is connected to the power grid, the energy storage inverter is connected to the battery, the solid-state switching switch is connected to the energy storage inverter, and the load is connected to the solid-state switching switch and the energy storage inverter, respectively, wherein the solid-state switching switch is a switch for switching power supply between the power grid and the battery, and the energy storage inverter is a device for converting current.

[0083] Exemplarily, the battery may be a DC energy storage battery, and the power grid may be an AC power grid.

[0084] The power supply system detects the status of the power grid in real time. When the power grid is in the power supply state, it means that the power grid can supply power normally. The power supply system closes the solid-state switch to connect the power grid and the load, and supplies power to the load through the power grid.

[0085] For example, the power supply system may detect the voltage of the power grid and determine whether the power grid is in a power-on state or a power-off state according to the voltage of the power grid.

[0086] When the power grid is in a power-off state, it means that the power grid cannot supply power normally. The power supply system disconnects the solid-state switch, thereby disconnecting the power grid and the load, starting the energy storage inverter, and supplying power to the load through the energy storage inverter and battery.

[0087] It should be noted that the state switching time of the solid-state switch is relatively short, which ensures the power switching speed of the power supply system. For example, the state switching time of the solid-state switch can be specifically within 5ms.

[0088] For example, when the grid loses power or fails, the power supply system may start the energy storage converter to supply power, and when the grid resumes power supply, the power supply system may stop running the energy storage converter.

[0089] The control method of the solid-state switching switch in this embodiment closes the solid-state switching switch when the power grid is in a power supply state, connects the power grid and the load, and supplies power to the load through the power grid. When the power grid is in a power-off state, the power supply system disconnects the solid-state switching switch, disconnects the power grid and the load, starts the energy storage inverter, and supplies power to the load through the energy storage inverter and the battery, which greatly shortens the power switching time of the power supply system, improves the power switching speed of the power supply system, and ensures the operational stability of the power supply system.

[0090] In one embodiment of the present application, as shown in FIG5 , a control method for a solid-state switch is proposed. The control method for the solid-state switch includes:

[0091] Step 502: When the grid is in a power supply state, close the solid-state switch to supply power to the load through the grid;

[0092] In step 504, when the power grid is in a power-off state, the solid-state switch is disconnected, and the load is supplied with power through the energy storage converter and the battery;

[0093] Step 506: When the power grid is in a power supply state, adjust the second voltage and the second phase of the energy storage converter according to the first voltage and the first phase of the power grid;

[0094] Step 508 : When the second voltage is equal to the first voltage and the second phase is equal to the first phase, close the solid-state switch, supply power to the load through the grid, and stop the energy storage converter.

[0095] In this embodiment, when the load is powered by the energy storage converter and the battery and the power grid is in a power supply state, it indicates that the power supply state of the power grid has been restored. The power supply system closes the solid-state switch and detects the first voltage and the first phase of the power grid. According to the first voltage and the first phase of the power grid, the second voltage and the second phase of the energy storage converter are adjusted, wherein the first voltage is the real-time voltage of the power grid, the first phase is the real-time phase of the power grid, the second voltage is the voltage value across the energy storage converter, and the second phase is the phase of the energy storage converter.

[0096] Illustratively, when the load is powered by the energy storage converter and the battery and the grid is in a power-off state, the power supply system keeps the solid-state switch disconnected and continues to power the load by the energy storage converter and the battery.

[0097] When the second voltage is equal to the first voltage and the second phase is equal to the first phase, the power supply system supplies power to the load through the power grid and stops the operation of the energy storage converter.

[0098] It should be noted that after adjusting the second voltage and second phase of the energy storage converter to the first voltage and first phase of the grid, shutting down the energy storage converter can ensure stable operation of the power supply system and power supply safety for the load.

[0099] The control method of the solid-state switching switch in this embodiment closes the solid-state switching switch and detects the first voltage and first phase of the power grid when the load is powered by the energy storage inverter and the battery and the power grid is in a power supply state. The second voltage and second phase of the energy storage inverter are adjusted according to the first voltage and first phase of the power grid. When the second voltage is equal to the first voltage and the second phase is equal to the first phase, the power supply system supplies power to the load through the power grid and stops the operation of the energy storage inverter, thereby ensuring the normal operation of the power supply system and ensuring the operational safety of the power supply system.

[0100] In one embodiment of the present application, as shown in FIG6 , a control method for a solid-state switch is proposed. The control method for the solid-state switch includes:

[0101] Step 602: When the grid is in a power supply state, close the solid-state switch to supply power to the load through the grid;

[0102] Step 604: When the power grid is in a power-off state, the solid-state switch is disconnected, and the DC power output by the battery is converted into AC power through the energy storage converter to connect the battery and the load;

[0103] Step 606: Power the load via the battery.

[0104] In this embodiment, the power supply system starts the energy storage converter, which converts the direct current output by the battery into alternating current to connect the battery and the load, and then the battery supplies power to the load.

[0105] Exemplarily, the power supply system disconnects the solid-state switch, starts the energy storage converter, and then supplies power to the load through the battery.

[0106] The control method of the solid-state switching switch in this embodiment starts the energy storage inverter, and converts the direct current output of the battery into alternating current through the energy storage inverter to connect the battery and the load, and then powers the load through the battery, thereby ensuring the operational stability of the power supply system. In the event of problems with the power grid, the power supply system can provide normal power to the load.

[0107] In one embodiment of the present application, as shown in FIG7 , a control method for a solid-state switch is proposed. The control method for the solid-state switch includes:

[0108] Step 702: When the grid is in a power supply state, close the solid-state switch to supply power to the load through the grid;

[0109] Step 704: Detect the battery power level. If the battery power level is less than a power threshold, convert the AC power output from the grid into DC power through an energy storage converter to connect the grid and the battery.

[0110] Step 706, charging the battery through the power grid;

[0111] Step 708: When the power grid is in a power-off state, the solid-state switch is disconnected, and the load is supplied with power through the energy storage converter and the battery.

[0112] In this embodiment, the power supply system detects the battery power level. When the battery power level is less than a power threshold, it indicates that the battery power level is low. The power supply system converts the AC power output by the power grid into DC power through an energy storage inverter to connect the power grid and the battery, thereby controlling the power grid to charge the battery. The power threshold is a preset threshold for the battery power level.

[0113] Exemplarily, the power threshold may be 50%.

[0114] The control method of the solid-state switching switch in this embodiment detects the battery power level. When the battery power level is less than a power threshold, the AC power output by the power grid is converted into DC power through the energy storage converter to connect the power grid and the battery, thereby controlling the power grid to charge the battery, thereby ensuring sufficient battery power and thus ensuring the operational stability of the power supply system.

[0115] As shown in FIG8 , an embodiment of the present application provides a control device 800 for a solid-state switch. The control device 800 for a solid-state switch includes:

[0116] The control module 802 is configured to close the solid-state switch when the grid is in a power supply state, and supply power to the load through the grid;

[0117] The control module 802 is further configured to disconnect the solid-state switch when the power grid is in a power-off state, and supply power to the load through the energy storage converter and the battery.

[0118] In this embodiment, a control device 800 for a solid-state switching switch is provided. The solid-state switching switch is the solid-state switching switch in any of the above embodiments. The solid-state switching switch is used to control a power supply system. The power supply system is a power supply device including multiple power sources. The power supply system can supply power to a load. The power supply system includes an energy storage inverter, a battery, a power grid and a solid-state switching switch. The solid-state switching switch is connected to the power grid, the energy storage inverter is connected to the battery, the solid-state switching switch is connected to the energy storage inverter, and the load is connected to the solid-state switching switch and the energy storage inverter respectively. The solid-state switching switch is a switch for switching power supply between the power grid and the battery, and the energy storage inverter is a device for converting current.

[0119] Exemplarily, the battery may be a DC energy storage battery, and the power grid may be an AC power grid.

[0120] The power supply system detects the power supply status of the power grid in real time. When the power grid is in the power supply state, it means that the power grid can supply power normally. The power supply system closes the solid-state switch to connect the power grid and the load, and supplies power to the load through the power grid. Among them, the power supply status of the power grid is the operating status of the power grid.

[0121] For example, the power supply system may detect the voltage of the power grid and determine whether the power grid is in a power-on state or a power-off state according to the voltage of the power grid.

[0122] When the power grid is in a power-off state, it means that the power grid cannot supply power normally. The power supply system disconnects the solid-state switch, thereby disconnecting the power grid and the load, starting the energy storage inverter, and supplying power to the load through the energy storage inverter and battery.

[0123] It should be noted that the state switching time of the solid-state switch is relatively short, which ensures the power switching speed of the power supply system. For example, the state switching time of the solid-state switch can be specifically within 5ms.

[0124] For example, when the grid loses power or fails, the power supply system may start the energy storage converter to supply power, and when the grid resumes power supply, the power supply system may stop running the energy storage converter.

[0125] The control method of the solid-state switching switch in this embodiment closes the solid-state switching switch when the power grid is in a power supply state, connects the power grid and the load, and supplies power to the load through the power grid. When the power grid is in a power-off state, the power supply system disconnects the solid-state switching switch, disconnects the power grid and the load, starts the energy storage inverter, and supplies power to the load through the energy storage inverter and the battery, which greatly shortens the power switching time of the power supply system, improves the power switching speed of the power supply system, and ensures the operational stability of the power supply system.

[0126] Exemplarily, as shown in FIG9 , the power supply system includes a solid-state switch, an energy storage converter, a battery, and a power grid, and the power supply system is used to supply power to a load.

[0127] For example, as shown in FIG10 , the power supply system includes two modes: grid power supply and energy storage power supply. When the power supply system uses the grid power supply mode to supply power to the load, the energy storage converter is controlled to be on standby to determine whether the grid is powered off. If the grid is not powered off, the energy storage converter is kept on standby. If the grid is powered off, all semiconductors of the solid-state switching switch are locked and the energy storage converter is started, and then the load is supplied with power by the energy storage mode. The power supply system supplies power through the energy storage converter to determine whether the grid is restored. If the grid is not restored, the energy storage converter is kept on supplying power. If the grid is restored, the energy storage converter is kept on supplying power. In the case of recovery, the voltage and phase of the energy storage inverter are adjusted, the voltage and phase of the energy storage inverter are detected, and the voltage and phase of the power grid are detected to determine whether the voltage and phase of the energy storage inverter are equal to the voltage and phase of the power grid. When the voltage and phase of the energy storage inverter are not equal to the voltage and phase of the power grid, the voltage and phase of the energy storage inverter are continued to be detected, and the voltage and phase of the power grid are continued to be detected. When the voltage and phase of the energy storage inverter are equal to the voltage and phase of the power grid, all semiconductors of the solid-state switching switch are triggered to turn on, the energy storage inverter is controlled to standby, and the load is powered by the power grid.

[0128] The control device 800 of the solid-state switching switch in this embodiment closes the solid-state switching switch when the power grid is in a power supply state, connects the power grid and the load, and supplies power to the load through the power grid. When the power grid is in a power-off state, the power supply system disconnects the solid-state switching switch, disconnects the power grid and the load, starts the energy storage inverter, and supplies power to the load through the energy storage inverter and the battery, which greatly shortens the power switching time of the power supply system, improves the power switching speed of the power supply system, and ensures the operational stability of the power supply system.

[0129] In one embodiment of the present application, the control device 800 of the solid-state switch further includes:

[0130] A control module 802 is configured to adjust a second voltage and a second phase of the energy storage converter according to a first voltage and a first phase of the grid when the grid is in a power supply state;

[0131] The control module 802 is further configured to close the solid-state switch to supply power to the load through the grid and stop the energy storage converter when the second voltage is equal to the first voltage and the second phase is equal to the first phase.

[0132] The control device 800 of the solid-state switching switch in this embodiment closes the solid-state switching switch and detects the first voltage and first phase of the power grid when the load is powered by the energy storage converter and the battery and the power grid is in a power supply state. The second voltage and second phase of the energy storage converter are adjusted according to the first voltage and first phase of the power grid. When the second voltage is equal to the first voltage and the second phase is equal to the first phase, the power supply system supplies power to the load through the power grid and stops the operation of the energy storage converter, thereby ensuring the normal operation of the power supply system and ensuring the operational safety of the power supply system.

[0133] In one embodiment of the present application, the control device 800 of the solid-state switch further includes:

[0134] The control module 802 is further configured to convert the DC power output by the battery into AC power through an energy storage converter to connect the battery and the load;

[0135] The control module 802 is further configured to supply power to the load via a battery.

[0136] The control device 800 of the solid-state switching switch in this embodiment starts the energy storage inverter, which converts the direct current output by the battery into alternating current through the energy storage inverter to connect the battery and the load, and then powers the load through the battery, thereby ensuring the operational stability of the power supply system. In the event of problems with the power grid, the power supply system is guaranteed to supply power to the load normally.

[0137] In one embodiment of the present application, the control device 800 of the solid-state switch further includes:

[0138] The control module 802 is further configured to detect the battery charge level. When the battery charge level is less than a charge threshold, the control module 802 converts the AC power output from the power grid into DC power through the energy storage converter to connect the power grid and the battery.

[0139] The control module 802 is further configured to charge the battery through the power grid.

[0140] The control device 800 of the solid-state switching switch in this embodiment detects the battery power level. When the battery power level is less than the power threshold, the AC power output by the power grid is converted into DC power through the energy storage converter to connect the power grid and the battery, thereby controlling the power grid to charge the battery, ensuring sufficient battery power and thus ensuring the operational stability of the power supply system.

[0141] In one embodiment of the present application, as shown in FIG11 , a control device 1100 for a solid-state switch is provided. The control device 1100 includes a processor 11002 and a memory 11004. The memory 11004 stores a program or instruction. When executed by the processor 11002, the program or instruction implements the steps of the solid-state switch control method described in any of the aforementioned technical solutions. Therefore, the control device 1100 for a solid-state switch has all the advantages of the solid-state switch control method described in any of the aforementioned technical solutions, and will not be further elaborated upon here.

[0142] In one embodiment of the present application, a readable storage medium is provided, on which a program or instruction is stored. When the program or instruction is executed by a processor, a control method for a solid-state switching switch as in any of the above-mentioned embodiments is implemented, thereby having all the beneficial technical effects of the control method for a solid-state switching switch in any of the above-mentioned embodiments.

[0143] The readable storage medium includes a read-only memory (ROM), a random access memory (RAM), a magnetic disk, or an optical disk.

[0144] It should be clarified that in the claims, specification and drawings of this application, the term "plurality" refers to two or more. Unless otherwise clearly defined, the orientation or positional relationship indicated by the terms "upper" and "lower" is based on the orientation or positional relationship shown in the drawings. It is only for the purpose of more conveniently describing this application and making the description process simpler, and is not intended to indicate or imply that the device or element referred to must have the specific orientation described, be constructed and operated in a specific orientation. Therefore, these descriptions cannot be understood as limiting this application. The terms "connect", "install", "fix" and the like should be understood in a broad sense. For example, "connection" can be a fixed connection between multiple objects, or a detachable connection between multiple objects, or an integral connection; it can be a direct connection between multiple objects, or an indirect connection between multiple objects through an intermediate medium. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood based on the specific circumstances of the above data.

[0145] In the claims, specification, and drawings of this application, the terms "one embodiment," "some embodiments," "a specific embodiment," and the like mean that the specific features, structures, materials, or characteristics described in conjunction with that embodiment or example are included in at least one embodiment or example of this application. In the claims, specification, and drawings of this application, schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

[0146] The above are merely preferred embodiments of the present application and are not intended to limit the present application. Those skilled in the art will readily appreciate that various modifications and variations are possible. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of the present application shall be included within the scope of protection of the present application.

Claims

1. A solid-state switch, wherein: The solid-state switch is used to control the on-off between the AC power supply and the load, and the solid-state switch includes: An input terminal connected to the AC power source; an output terminal connected to the load; a switch module, one end of which is connected to the input terminal, and the other end of which is connected to the output terminal; Wherein, the switch module comprises a first semiconductor device and a second semiconductor device, and the first semiconductor device and the second semiconductor device are devices including insulated gate bipolar transistors; When the first semiconductor device and the second semiconductor device are both in a locked state, the switch module disconnects the input terminal and the output terminal; when the first semiconductor device and the second semiconductor device are both in a turned-on state, the switch module connects the input terminal and the output terminal.

2. The solid-state switching switch according to claim 1, wherein: When both the first semiconductor device and the second semiconductor device are in a conducting state, the switch module is used to transmit the current input through the input terminal to the output terminal, and transmit the current input through the output terminal to the input terminal; When both the first semiconductor device and the second semiconductor device are in a locked state, the switch module is used to block the current input through the input terminal and the output terminal.

3. The solid-state switching switch according to claim 2, wherein: The first semiconductor device comprises a first insulated gate bipolar transistor, a collector of the first insulated gate bipolar transistor is connected to the input terminal, and an emitter of the first insulated gate bipolar transistor is connected to the output terminal; The second semiconductor device includes a second insulated gate bipolar transistor, a collector of the second insulated gate bipolar transistor is connected to the output terminal, and an emitter of the second insulated gate bipolar transistor is connected to the input terminal.

4. The solid-state switching switch according to claim 2, wherein: The first semiconductor device includes a first insulated gate bipolar transistor and a first diode. The anode of the first diode is connected to the emitter of the first insulated gate bipolar transistor, and the cathode of the first diode is connected to the collector of the first insulated gate bipolar transistor; The second semiconductor device comprises a second insulated gate bipolar transistor and a second diode, wherein an anode of the second diode is connected to a collector of the second insulated gate bipolar transistor, and a cathode of the second diode is connected to an emitter of the second insulated gate bipolar transistor; The collector of the first insulated gate bipolar transistor is connected to the collector of the second insulated gate bipolar transistor, the emitter of the first insulated gate bipolar transistor is connected to the output terminal, and the emitter of the second insulated gate bipolar transistor is connected to the input terminal.

5. A method for controlling a solid-state switch, wherein: The solid-state switching switch is a solid-state switching switch according to any one of claims 1 to 4, the solid-state switching switch is used to control a power supply system, the power supply system is used to power a load, the power supply system includes an energy storage converter, a battery, a power grid and the solid-state switching switch, the solid-state switching switch is connected to the power grid, the energy storage converter is connected to the battery, the solid-state switching switch is connected to the energy storage converter, the load is respectively connected to the solid-state switching switch and the energy storage converter, and the control method of the solid-state switching switch includes: When the power grid is in a power supply state, closing the solid-state switch to supply power to the load through the power grid; When the power grid is in a power-off state, the solid-state switch is disconnected, and the load is powered by the energy storage converter and the battery.

6. The control method of the solid-state switch according to claim 5, wherein: After the load is powered by the energy storage converter and the battery, the method further includes: When the power grid is in a power supply state, adjusting the second voltage and the second phase of the energy storage converter according to the first voltage and the first phase of the power grid; When the second voltage is equal to the first voltage and the second phase is equal to the first phase, the solid-state switch is closed, the load is powered by the power grid, and the energy storage converter is stopped.

7. The control method of the solid-state switch according to claim 5, wherein: The supplying power to the load by the energy storage converter and the battery specifically includes: The energy storage converter converts the DC power output by the battery into AC power. connecting the battery and the load; The load is powered by the battery.

8. The control method of a solid-state switch according to any one of claims 5 to 7, wherein: After the load is supplied with power by the power grid, the method further includes: detecting the power level of the battery, and when the power level of the battery is less than a power threshold, converting the alternating current output by the power grid into direct current through the energy storage converter, so as to connect the power grid and the battery; The battery is charged through the power grid.

9. A control device for a solid-state switch, wherein: include: processor; A memory, wherein a program or instruction is stored in the memory, and the processor implements the steps of the control method of the solid-state switching switch as described in any one of claims 5 to 8 when executing the program or instruction in the memory.

10. A readable storage medium, wherein: The readable storage medium stores a program or instruction, and when the program or instruction is executed by a processor, the steps of the control method of the solid-state switching switch according to any one of claims 5 to 8 are implemented.

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