Solid state change-over switch

Abstract

The utility model relates to the technical field of switch control, and provides a solid-state change-over switch. The solid-state change-over switch is used for controlling connection and disconnection between an alternating current power supply and a load, and comprises an input terminal connected with the alternating current power supply; the output terminal is connected with a load; one end of the switch module is connected with the input terminal, and the other end of the switch module is connected with 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 comprising 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. And when the first semiconductor device and the second semiconductor device are both in a conduction state, the switch module is communicated with the input terminal and the output terminal.

Description

[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", all contents of which are incorporated by reference in this application. Technical Field

[0002] The utility model relates to the technical field of switch control, in particular to a solid-state switching switch. 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. Utility Model Content

[0004] The utility model aims to at least solve the technical problems in the prior art or related art, such as slow switch switching speed and failure to ensure synchronization.

[0005] To this end, a first aspect of the present invention is to provide a solid-state switching switch.

[0006] In view of this, according to the first aspect of the utility model, a solid-state switching switch is proposed, which is used to control the on and off between an AC power supply and a load, and 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 which is connected to the input terminal, and the other end of which 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 turned-on state, the switch module connects the input terminal and the output terminal; the first semiconductor device includes a first insulated gate bipolar transistor, the collector of the first insulated gate bipolar transistor is connected to the input terminal, and the 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, the collector of the second 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.

[0007] The solid-state switching switch in the technical solution includes an input terminal and an output terminal, the input terminal is connected to an AC power supply, and the output terminal is connected to a 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. The first semiconductor device of the solid-state switching switch includes a first insulated gate bipolar transistor, the collector of the first insulated gate bipolar transistor is connected to the input terminal, and the 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, the emitter of the second insulated gate bipolar transistor is connected to the input terminal, and the collector of the second insulated gate bipolar transistor is connected to the output terminal, which improves the state switching speed of the first semiconductor device and the second semiconductor device, thereby improving the state switching speed of the solid-state switching switch.

[0008] Additional aspects and advantages of the present invention will become apparent in the following description or will be understood through practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0009] The above and / or additional aspects and advantages of the present invention will become apparent and easily understood from the description of the embodiments in conjunction with the following drawings, in which:

[0010] Figure 1 One of the circuit diagrams of the solid-state switch in the embodiment of the utility model is shown;

[0011] Figure 2 The second circuit diagram of the solid-state switch in the embodiment of the utility model is shown;

[0012] Figure 3 The third circuit diagram of the solid-state switch in the embodiment of the utility model is shown;

[0013] Figure 4 One of the flow charts of the control method of the solid-state switch in the embodiment of the utility model is shown;

[0014] Figure 5 The second flowchart of the control method of the solid-state switch in the embodiment of the utility model is shown;

[0015] Figure 6The third flow chart of the control method of the solid-state switch in the embodiment of the utility model is shown;

[0016] Figure 7 A fourth flow chart of a control method of a solid-state switch in an embodiment of the present utility model is shown;

[0017] Figure 8 One of the structural block diagrams of the control device of the solid-state switch in the embodiment of the utility model is shown;

[0018] Fig. 9 One of the schematic diagrams of the control device of the solid-state switch in the embodiment of the utility model is shown;

[0019] Fig.10 A second schematic diagram showing a control device for a solid-state switch in an embodiment of the present utility model;

[0020] Fig.11 The second structural block diagram of the control device of the solid-state switch in the embodiment of the utility model is shown;

[0021] in, Figure 1 , Figure 2 and Figure 3 The corresponding relationship between the reference numerals and the component names is as follows:

[0022] 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

[0023] In order to more clearly understand the above-mentioned purpose, features and advantages of the utility model, the utility model is further described in detail below in conjunction with the accompanying drawings and specific embodiments. It should be noted that the embodiments of the utility model and the features in the embodiments can be combined with each other without conflict.

[0024] In the following description, many specific details are set forth to facilitate a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Therefore, the protection scope of the present invention is not limited to the specific embodiments disclosed below.

[0025] Combine the following Figures 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.

[0026] In one embodiment according to the present application, Figure 1 As shown, a solid-state switching switch 100 is proposed, and the solid-state switching switch 100 includes:

[0027] An input terminal 102, the input terminal 102 is connected to an AC power source;

[0028] An output terminal 104, the output terminal 104 is connected to a load;

[0029] 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;

[0030] 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;

[0031] When the first semiconductor device 108 and the second semiconductor device 110 are both in a 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 a turned-on state, the switch module 106 connects the input terminal 102 and the output terminal 104 .

[0032] 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 of the AC power source and the load.

[0033] Exemplarily, the AC power source may be specifically an AC power grid, and the load may be specifically industrial equipment.

[0034] Exemplarily, the solid-state switching switch 100 may be used to control a power supply system, where the power supply system includes a plurality of power supplies, and the solid-state switching switch 100 may be used to switch the plurality of power supplies in the power supply system.

[0035] The solid-state switching switch 100 includes an input terminal 102 and an output terminal 104 , wherein the input terminal 102 is connected to an AC power source, and the output terminal 104 is connected to a load, wherein 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 .

[0036] 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.

[0037] 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.

[0038] 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 , wherein the switch module 106 is a module capable of switching a switch state.

[0039] 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.

[0040] Exemplarily, 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.

[0041] It should be noted that a conventional switching switch includes a thyristor inside, and the state switching of the switch is achieved through the thyristor. The switching time of the thyristor exceeds 20ms, while the switching time of the insulated gate bipolar transistor can be achieved 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.

[0042] 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 turned-on state, the switch module 106 can connect the input terminal 102 and the output terminal 104 .

[0043] It should be noted that a conventional switching switch 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.

[0044] By way of example, the first semiconductor device 108 and the second semiconductor device 110 may be specifically a parallel connection structure.

[0045] By way of example, the first semiconductor device 108 and the second semiconductor device 110 may be specifically a series connection structure.

[0046] The solid-state switching switch 100 in this embodiment includes an input terminal 102 and an output terminal 104, wherein 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, wherein 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 turned-on state, the switch module 106 can connect the input terminal 102 and the output terminal 104, thereby greatly reducing the state switching time of the switch module 106, improving the state switching speed of the switch module 106, and simplifying the circuit structure of the solid-state switching switch 100.

[0047] 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 a conducting 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;

[0048] When the first semiconductor device 108 and the second semiconductor device 110 are both in a locked state, the switch module 106 is used to block the current input through the input terminal 102 and the output terminal 104 .

[0049] 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.

[0050] 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.

[0051] 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 .

[0052] Exemplarily, the first semiconductor device 108 and the second semiconductor device 110 are both switched to a latched state, thereby switching the solid-state switch 100 to an open state.

[0053] In the solid-state switching switch 100 of the present 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 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, and 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.

[0054] In one embodiment according to the present application, Figure 2 As shown, a solid-state switch 100 is proposed, the first semiconductor device 108 includes a first insulated gate bipolar transistor 1082, 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;

[0055] 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 .

[0056] 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 .

[0057] 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 .

[0058] For example, the first insulated gate bipolar transistor 1082 may transmit current input through the input terminal 102 to the output terminal 104 .

[0059] 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 .

[0060] 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 .

[0061] For example, the second insulated gate bipolar transistor 1102 may transmit the current input through the output terminal 104 to the input terminal 102 .

[0062] The first semiconductor device 108 of the solid-state switching switch 100 in this embodiment includes a first insulated gate bipolar transistor 1082, 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. The second semiconductor device 110 includes a second insulated gate bipolar transistor 1102, 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, which 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.

[0063] In one embodiment according to the present application, Figure 3 As shown, a solid-state switch 100 is proposed, 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;

[0064] 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;

[0065] 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 .

[0066] 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.

[0067] 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.

[0068] 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 .

[0069] 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 .

[0070] 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 .

[0071] The first semiconductor device 108 of the solid-state switch 100 in this embodiment 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. 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.

[0072] In one embodiment according to the present application, Figure 4As shown, a control method for a solid-state switching switch is proposed, and the control method for the solid-state switching switch includes:

[0073] Step 402, when the power grid is in a power supply state, close the solid-state switch to supply power to the load through the power grid;

[0074] Step 404, when the power grid is in a power-off state, disconnect the solid-state switch and supply power to the load through the energy storage converter and the battery.

[0075] 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 supplies, 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, wherein the solid-state switching switch is a switch used to switch power supply between a power grid and a battery, and the energy storage inverter is a device for converting current.

[0076] Exemplarily, the battery may be a DC energy storage battery, and the power grid may be an AC power grid.

[0077] 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 switching switch to connect the power grid and the load, and supplies power to the load through the power grid.

[0078] Exemplarily, the power supply system may detect the voltage of the power grid, and determine whether the power grid is in a power supply state or a power-off state according to the voltage of the power grid.

[0079] 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 the battery.

[0080] It should be noted that the state switching time of the solid-state switch is relatively short, thereby ensuring the power switching speed of the power supply system. Exemplarily, the state switching time of the solid-state switch may be specifically within 5 ms.

[0081] For example, when the power grid loses power or fails, the power supply system can start the energy storage converter to supply power, and when the power grid resumes power supply, the power supply system can stop running the energy storage converter.

[0082] The control method of the solid-state switching switch in this embodiment closes the solid-state switching switch to connect the grid and the load when the grid is in a power supply state, and supplies power to the load through the grid. When the grid is in a power-off state, the power supply system disconnects the solid-state switching switch to disconnect the 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 operating stability of the power supply system.

[0083] In one embodiment according to the present application, Figure 5 As shown, a control method for a solid-state switching switch is proposed, and the control method for the solid-state switching switch includes:

[0084] Step 502, when the power grid is in a power supply state, close the solid-state switch to supply power to the load through the power grid;

[0085] Step 504: when the power grid is in a power-off state, disconnect the solid-state switch and supply power to the load through the energy storage converter and the battery;

[0086] Step 506, 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;

[0087] 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 power grid, and stop running the energy storage converter.

[0088] In this embodiment, when the load is powered by the energy storage inverter and the battery, and the power grid is in a power supply state, it means that the power supply state of the power grid has been restored, the power supply system closes the solid-state switching switch, and detects the first voltage and the first phase of the power grid, and adjusts the second voltage and the second phase of the energy storage inverter according to the first voltage and the first phase of the power grid, 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 at both ends of the energy storage inverter, and the second phase is the phase of the energy storage inverter.

[0089] Exemplarily, when the load is powered by the energy storage inverter 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 inverter and the battery.

[0090] 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.

[0091] It should be noted that after adjusting the second voltage and the second phase of the energy storage converter to the first voltage and the first phase of the power grid, shutting down the energy storage converter can ensure the stable operation of the power supply system and the power supply safety for the load.

[0092] The control method of the solid-state switching switch in this embodiment closes the solid-state switching switch and detects the first voltage and the 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. According to the first voltage and the first phase of the power grid, the second voltage and the second phase of the energy storage inverter are adjusted. 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 operating safety of the power supply system.

[0093] In one embodiment according to the present application, Figure 6 As shown, a control method for a solid-state switching switch is proposed, and the control method for the solid-state switching switch includes:

[0094] Step 602, when the power grid is in a power supply state, close the solid-state switch to supply power to the load through the power grid;

[0095] Step 604, when the power grid is in a power-off state, disconnect the solid-state switch, and convert the direct current output by the battery into alternating current through the energy storage converter to connect the battery and the load;

[0096] Step 606, supplying power to the load via the battery.

[0097] In this embodiment, the power supply system starts the energy storage converter, and converts the direct current output by the battery into alternating current through the energy storage converter, so as to connect the battery and the load, and then the battery supplies power to the load.

[0098] 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.

[0099] 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 the load is powered by the battery, thereby ensuring the operating 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.

[0100] In one embodiment according to the present application, Figure 7 As shown, a control method for a solid-state switching switch is proposed, and the control method for the solid-state switching switch includes:

[0101] Step 702, when the power grid is in a power supply state, close the solid-state switch to supply power to the load through the power grid;

[0102] Step 704, detecting the power level of the battery, and when the power level of the battery is less than the power threshold, converting the AC power output by the power grid into DC power through the energy storage converter to connect the power grid and the battery;

[0103] Step 706, charging the battery through the power grid;

[0104] Step 708, when the power grid is in a power-off state, disconnect the solid-state switch and supply power to the load through the energy storage converter and the battery.

[0105] In this embodiment, the power supply system detects the battery power. When the battery power is less than a power threshold, it indicates that the battery power 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.

[0106] Exemplarily, the power threshold may be specifically 50%.

[0107] 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 the power threshold, the AC power output by the power grid is converted into DC power through the energy storage inverter to connect the power grid and the battery, thereby controlling the power grid to charge the battery, ensuring that the battery power level is sufficient, thereby ensuring the operating stability of the power supply system.

[0108] like Figure 8 As shown, in an embodiment of the present invention, a control device 800 of a solid-state switch is provided. The control device 800 of a solid-state switch includes:

[0109] The control module 802 is used to close the solid-state switch when the power grid is in a power supply state, so as to supply power to the load through the power grid;

[0110] The control module 802 is also used 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 inverter and the battery.

[0111] In this embodiment, a control device 800 of 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 supplies. 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 used to switch power supply between a power grid and a battery, and the energy storage inverter is a device for converting current.

[0112] Exemplarily, the battery may be a DC energy storage battery, and the power grid may be an AC power grid.

[0113] 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 status, it means that the power grid can supply power normally. The power supply system closes the solid-state switching 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.

[0114] Exemplarily, the power supply system may detect the voltage of the power grid, and determine whether the power grid is in a power supply state or a power-off state according to the voltage of the power grid.

[0115] 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 the battery.

[0116] It should be noted that the state switching time of the solid-state switch is relatively short, thereby ensuring the power switching speed of the power supply system. Exemplarily, the state switching time of the solid-state switch may be specifically within 5 ms.

[0117] For example, when the power grid loses power or fails, the power supply system can start the energy storage converter to supply power, and when the power grid resumes power supply, the power supply system can stop running the energy storage converter.

[0118] The control method of the solid-state switching switch in this embodiment closes the solid-state switching switch to connect the grid and the load when the grid is in a power supply state, and supplies power to the load through the grid. When the grid is in a power-off state, the power supply system disconnects the solid-state switching switch to disconnect the 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 operating stability of the power supply system.

[0119] For example, Fig. 9As shown, the power supply system includes a solid-state switching switch, an energy storage converter, a battery and a power grid, and the power supply system is used to supply power to the load.

[0120] For example, Fig.10 As shown, the power supply system includes two modes: power supply by the grid and power supply by energy storage. When the power supply system uses the power supply by the grid to supply power to the load, the energy storage converter is controlled to be in standby mode to determine whether the grid is powered off. When the grid is not powered off, the energy storage converter is kept in standby mode. When 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 energy storage. The power supply system supplies power through the energy storage converter to determine whether the grid is restored. When the grid is not restored, the energy storage converter is kept in standby mode. When the grid is restored, Under the circumstances, adjust the voltage and phase of the energy storage inverter, detect the voltage and phase of the energy storage inverter, and detect the voltage and phase of the power grid, determine whether the voltage and phase of the energy storage inverter are equal to the voltage and phase of the power grid, and when the voltage and phase of the energy storage inverter are not equal to the voltage and phase of the power grid, continue to detect the voltage and phase of the energy storage inverter, and continue to detect the voltage and phase of the power grid at the same time, and when the voltage and phase of the energy storage inverter are equal to the voltage and phase of the power grid, trigger all semiconductors of the solid-state switching switch to turn on, control the energy storage inverter to standby, and use the power supply method of the power grid to power the load.

[0121] The control device 800 of the solid-state switching switch in this embodiment closes the solid-state switching switch to connect the grid and the load when the grid is in a power supply state, and supplies power to the load through the grid. When the grid is in a power-off state, the power supply system disconnects the solid-state switching switch, disconnects the 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 operating stability of the power supply system.

[0122] In one embodiment of the present application, the control device 800 of the solid-state switch further includes:

[0123] A control module 802 is used to 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 when the power grid is in a power supply state;

[0124] The control module 802 is further configured to close the solid-state switch to supply power to the load through the power 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.

[0125] 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 the 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. According to the first voltage and the first phase of the power grid, the second voltage and the second phase of the energy storage inverter are adjusted. 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 running the energy storage inverter, thereby ensuring the normal operation of the power supply system and ensuring the operating safety of the power supply system.

[0126] In one embodiment of the present application, the control device 800 of the solid-state switch further includes:

[0127] The control module 802 is also used to convert the direct current output by the battery into alternating current through the energy storage converter to connect the battery and the load;

[0128] The control module 802 is also used to supply power to the load via a battery.

[0129] The control device 800 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 the load is powered by the battery, thereby ensuring the operating 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.

[0130] In one embodiment of the present application, the control device 800 of the solid-state switch further includes:

[0131] The control module 802 is also used to detect the power level of the battery. When the power level of the battery 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.

[0132] The control module 802 is also used to charge the battery through the power grid.

[0133] 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 inverter 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 operating stability of the power supply system.

[0134] In one embodiment according to the present application, Fig.11As shown, a control device 1100 for a solid-state switch is proposed. The control device 1100 for the solid-state switch includes a processor 11002 and a memory 11004. The memory 11004 stores a program or instruction. When the program or instruction is executed by the processor 11002, the steps of the control method for the solid-state switch in any of the above technical solutions are implemented. Therefore, the control device 1100 for the solid-state switch has all the beneficial effects of the control method for the solid-state switch in any of the above technical solutions, which will not be described in detail here.

[0135] 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.

[0136] The readable storage medium includes a read-only memory (ROM), a random access memory (RAM), a magnetic disk or an optical disk.

[0137] It should be clarified that in the claims, specification and drawings of the present invention, the term "multiple" refers to two or more than two. Unless otherwise clearly defined, the orientation or position relationship indicated by the terms "upper" and "lower" is based on the orientation or position relationship shown in the drawings, which is only for the purpose of more conveniently describing the present invention and making the description process easier, rather than indicating or implying that the device or element referred to must have the specific orientation described, be constructed and operated in a specific orientation, so these descriptions cannot be understood as limitations on the present invention; 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 the present invention can be understood based on the specific circumstances of the above data.

[0138] In the claims, specification and drawings of the present invention, the description of the terms "one embodiment", "some embodiments", "specific embodiments" and the like means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In the claims, specification and drawings of the present invention, the 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 one or more embodiments or examples in a suitable manner.

[0139] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. For those skilled in the art, the present invention may be subject to various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A solid-state switch, characterized in that: 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; 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.

2. The solid-state switch according to claim 1, characterized in that: 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 switch according to claim 1, characterized in that: The first insulated gate bipolar transistor is an insulated gate bipolar transistor inside the first semiconductor device, and the second insulated gate bipolar transistor is an insulated gate bipolar transistor inside the second semiconductor device.

4. The solid-state switch according to claim 1, characterized in that: The first semiconductor device and the second semiconductor device are connected in parallel.

5. The solid-state switch according to any one of claims 1 to 4, characterized in that: The solid-state switching switch is used to control a power supply system, the power supply system includes a plurality of power supplies, and the solid-state switching switch is used to switch the plurality of power supplies in the power supply system.

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