Radiator-free hybrid solid-state changeover switch and control method and apparatus therefor, and medium

Abstract

The present application relates to the technical field of switch control, and provides a radiator-free hybrid solid-state changeover switch and a control method and apparatus therefor, and a medium. The radiator-free hybrid solid-state changeover switch is used for controlling the connection / disconnection between an alternating-current power source and a load, and comprises: an input terminal, which is connected to the alternating-current power source; an output terminal, which is connected to the load; a semiconductor device, one end of which is connected to the input terminal, and the other end of which is connected to the output terminal; and a switch element, one end of which is connected to the input terminal, and the other end of which is connected to the output terminal. The radiator-free hybrid solid-state changeover switch in the present application has the advantages of the loss being low, there being no need to provide a radiator, etc.

Description

Radiator-free hybrid solid-state switch and control method, device and medium thereof

[0001] This application claims priority to the Chinese patent application filed with the State Intellectual Property Office of China on June 16, 2023, with application number "202310717873.3" and application name "Radiatorless hybrid solid-state switching switch and its control method, device and medium", all 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 heat sink-free hybrid solid-state switching switch and a control method, device, and 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 or solid-state switching switches can be deployed in the power supply system to switch the power supply through the mechanical switches or solid-state switching switches. However, the current mechanical switches have problems such as slow switching speed and inability to ensure synchronization. The current solid-state switching switches have technical problems such as high loss, which leads to the need for conventional solid-state switching switches to use larger radiators for heat dissipation.

[0004] Summary of the Invention

[0005] The present application aims to at least solve the technical problems existing in the prior art or related art, such as the complex structure of the switching switch, the slow state switching speed, and the high loss.

[0006] To this end, a first aspect of the present application is to propose a heat sink-free hybrid solid-state switch.

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

[0008] A third aspect of the present application is to provide a control device for a heat sink-free hybrid 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 heat sink-free hybrid solid-state switching switch is proposed, which is used to control the on and off between an AC power supply and a load. The heat sink-free hybrid 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 semiconductor device, one end of the semiconductor device is connected to the input terminal, and the other end of the semiconductor device is connected to the output terminal; a switching element, one end of the switching element is connected to the input terminal, and the other end of the switching element is connected to the output terminal; when the switching element is in the disconnected state and the semiconductor device is in the locked state, the input terminal and the output terminal are in the disconnected state; when the switching element is in the closed state and / or the semiconductor device is in the connected state, the input terminal and the output terminal are in the connected state; wherein, the state switching time of the semiconductor device is less than the state switching time of the switching element, and the loss of the switching element is less than the loss of the semiconductor device.

[0011] The heat sink-free hybrid solid-state switching switch in this technical solution is in a disconnected state between the input terminal and the output terminal when the switch element is in the disconnected state and the semiconductor device is in the locked state; and is in a connected state between the input terminal and the output terminal when the switch element is in the closed state and / or the semiconductor device is in the connected state, thereby greatly reducing the loss of the heat sink-free hybrid solid-state switching switch. As a result, there is no need to set a heat sink in the heat sink-free hybrid solid-state switching switch, simplifying the circuit structure of the heat sink-free hybrid solid-state switching switch, and at the same time greatly reducing the state switching time of the heat sink-free hybrid solid-state switching switch, thereby improving the state switching speed of the heat sink-free hybrid solid-state switching switch.

[0012] According to a second aspect of the present application, a control method for a heatsink-less hybrid solid-state switch is provided. The heatsink-less hybrid solid-state switch is the heatsink-less hybrid solid-state switch of the first aspect. The heatsink-less hybrid solid-state switch is used to control a power supply system, which is used to supply power to a load. The power supply system includes an energy storage converter, a battery, a power grid, and the heatsink-less hybrid solid-state switch. The heatsink-less hybrid solid-state switch is connected to the power grid, the energy storage converter is connected to the battery, the heatsink-less hybrid solid-state switch is connected to the energy storage converter, and the load is connected to the heatsink-less hybrid solid-state switch and the energy storage converter, respectively. The control method for the heatsink-less hybrid solid-state switch includes: when the power grid is in a power supply state, turning on the semiconductor device of the heatsink-less hybrid solid-state switch and closing the switching element of the heatsink-less hybrid solid-state switch; when the switching element is in a closed state, blocking the semiconductor device and supplying power to the load through the power grid; when the power grid is in a power-off state, blocking the semiconductor device of the heatsink-less hybrid solid-state switch and disconnecting the switching element of the heatsink-less hybrid solid-state switch, and supplying power to the load through the energy storage converter and the battery.

[0013] The control method of the heat sink-free hybrid solid-state switching switch in the present technical solution turns on the semiconductor device of the heat sink-free hybrid solid-state switching switch and closes the switch element of the heat sink-free hybrid solid-state switching switch when the power grid is in a power supply state; after closing the switch element, detects the state of the semiconductor device; when the switch element is in a closed state, locks the semiconductor device and supplies power to the load through the power grid; when the power grid is in a power-off state, locks the semiconductor device of the heat sink-free hybrid solid-state switching switch and disconnects the switch element of the heat sink-free hybrid solid-state switching switch, thereby disconnecting the power grid and the load, starting the energy storage converter, and supplying 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 heatsink-less hybrid solid-state switch is provided. The device comprises a processor and a memory, wherein the memory stores a program or instruction. When executed by the processor, the program or instruction implements the steps of the control method for a heatsink-less hybrid solid-state switch described in any of the aforementioned technical solutions. Therefore, the control device for a heatsink-less hybrid solid-state switch possesses all the beneficial effects of the control method for a heatsink-less hybrid solid-state switch described in any of the aforementioned technical solutions, and further description thereof is omitted.

[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 control method for a heatsink-less hybrid solid-state switch as described in any of the aforementioned technical solutions. Therefore, the readable storage medium possesses all the beneficial effects of the control method for a heatsink-less hybrid solid-state switch as described in any of the aforementioned 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 a circuit diagram of a heat sink-free hybrid solid-state switch in an embodiment of the present application;

[0019] FIG2 shows a flow chart of a control method for a heat sink-free hybrid solid-state switch according to an embodiment of the present application;

[0020] FIG3 shows a second flow chart of a control method for a heat sink-less hybrid solid-state switch in an embodiment of the present application;

[0021] FIG4 shows a third flow chart of a control method for a heat sink-less hybrid solid-state switch in an embodiment of the present application;

[0022] FIG5 shows a fourth flow chart of a control method for a heat sink-less hybrid solid-state switch in an embodiment of the present application;

[0023] FIG6 shows a fifth flow chart of a control method for a heat sink-less hybrid solid-state switch in an embodiment of the present application;

[0024] FIG7 shows one structural block diagram of a control device for a heat sink-free hybrid solid-state switch in an embodiment of the present application;

[0025] FIG8 shows one of the schematic diagrams of a control device for a heat sink-less hybrid solid-state switch in an embodiment of the present application;

[0026] FIG9 shows a second schematic diagram of a control device for a heat sink-less hybrid solid-state switch in an embodiment of the present application;

[0027] FIG10 shows a second structural block diagram of the control device for the heat sink-free hybrid solid-state switch in an embodiment of the present application;

[0028] The corresponding relationship between the reference numerals and component names in FIG1 is as follows:

[0029] 100 heat sink-less hybrid solid-state switching switch, 102 input terminal, 104 output terminal, 106 semiconductor device, 108 switching element, 1062 first insulated gate bipolar transistor, 1064 second insulated gate bipolar transistor, 1066 first diode, 1068 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 10 , the heat sink-free hybrid solid-state switch and its control method, device, and 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 heat sink-less hybrid solid-state switch 100 is provided. The heat sink-less hybrid 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 semiconductor device 106 , wherein one end of the semiconductor device 106 is connected to the input terminal 102 , and the other end of the semiconductor device 106 is connected to the output terminal 104 ;

[0037] a switching element 108 , wherein one end of the switching element 108 is connected to the input terminal 102 , and the other end of the switching element 108 is connected to the output terminal 104 ;

[0038] When the switch element 108 is in an open state and the semiconductor device 106 is in a locked state, the input terminal 102 and the output terminal 104 are in a disconnected state; when the switch element 108 is in a closed state and / or the semiconductor device 106 is in a connected state, the input terminal 102 and the output terminal 104 are in a connected state.

[0039] The state switching time of the semiconductor device 106 is shorter than the state switching time of the switch element 108 , and the loss of the switch element 108 is smaller than the loss of the semiconductor device 106 .

[0040] In this embodiment, a heatsink-less hybrid solid-state switch 100 is provided. The heatsink-less hybrid solid-state switch 100 is used to control the on / off connection between an AC power source and a load.

[0041] For example, the AC power source may be an AC power grid, and the load may be industrial equipment.

[0042] Exemplarily, the heatsink-less hybrid solid-state switch 100 can be used to control a power supply system including multiple power supplies. The heatsink-less hybrid solid-state switch 100 can be used to switch the multiple power supplies in the power supply system.

[0043] The heatsink-less hybrid solid-state 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 the input port of the heatsink-less hybrid solid-state switch 100, and the output terminal 104 is the output port of the heatsink-less hybrid solid-state switch 100.

[0044] 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.

[0045] 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.

[0046] The heat sink-less hybrid solid-state switch 100 includes a semiconductor device 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 semiconductor device 106 is a device including an insulated gate bipolar transistor.

[0047] For example, the semiconductor device 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] The heat sink-less hybrid solid-state switching switch 100 also includes a switching element 108, one end of the switching element 108 is connected to the input terminal 102, and the other end of the switching element 108 is connected to the output terminal 104. The switching element 108 is an element that can be disconnected or connected, wherein the state switching time of the semiconductor device 106 is shorter than the state switching time of the switching element 108, and the loss of the switching element 108 is less than the loss of the semiconductor device 106.

[0049] For example, the switch element 108 may be a mechanical switch, and the loss of the switch element 108 may be close to 0 watt, which is smaller than the loss of the semiconductor device 106 .

[0050] It should be noted that a conventional switching switch includes a thyristor, which is used to switch the on and off states of the switching switch. The switching time of the thyristor exceeds 20ms, while the switching time of the insulated gate bipolar transistor can be less than 5ms, and the response speed is faster. Therefore, by using the semiconductor device 106 including the insulated gate bipolar transistor, the state switching time of the semiconductor device 106 is greatly reduced, thereby improving the state switching speed of the semiconductor device 106.

[0051] When the switch element 108 is in an OFF state and the semiconductor device 106 is in a blocked state, the input terminal 102 and the output terminal 104 are disconnected.

[0052] When the switch element 108 is closed and / or the semiconductor device 106 is connected, the input terminal 102 and the output terminal 104 are in a connected state.

[0053] It should be noted that a conventional switch needs to be internally provided with an absorption circuit, but the heat sink-less hybrid solid-state switch 100 in this embodiment does not need to be provided with an absorption circuit, thereby simplifying the internal structure of the heat sink-less hybrid solid-state switch 100.

[0054] For example, the switch element 108 and the semiconductor device 106 may be connected in parallel.

[0055] In the heatsink-less hybrid solid-state switch 100 of this embodiment, when the switch element 108 is in the disconnected state and the semiconductor device 106 is in the locked state, the input terminal 102 and the output terminal 104 are in the disconnected state. When the switch element 108 is in the closed state and / or the semiconductor device 106 is in the connected state, the input terminal 102 and the output terminal 104 are in the connected state, which greatly reduces the loss of the heatsink-less hybrid solid-state switch 100. As a result, there is no need to provide a heatsink in the heatsink-less hybrid solid-state switch 100, which simplifies the circuit structure of the heatsink-less hybrid solid-state switch 100 and greatly reduces the state switching time of the heatsink-less hybrid solid-state switch 100, thereby improving the state switching speed of the heatsink-less hybrid solid-state switch 100.

[0056] In one embodiment of the present application, a heat sink-free hybrid solid-state switch 100 is provided. When the switch element 108 is closed and the semiconductor device 106 is connected, the semiconductor device 106 and the switch element 108 are 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.

[0057] When the switch element 108 is in a closed state and the semiconductor device 106 is in a blocked state, the switch element 108 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 ;

[0058] When the switch element 108 is in an off state and the semiconductor device 106 is in an on state, the semiconductor device 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 ;

[0059] When the switch element 108 is in an off state and the semiconductor device 106 is in a blocked state, the semiconductor device 106 and the switch element 108 are used to block the current input through the input terminal 102 and the output terminal 104 .

[0060] In this embodiment, when the switching element 108 is in a closed state and the semiconductor device 106 is in a connected state, the semiconductor device 106 and the switching element 108 are 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.

[0061] For example, when the switch element 108 is in a closed state and the semiconductor device 106 is in a conducting state, the input terminal 102 and the output terminal 104 are in a conducting state.

[0062] When the switch element 108 is in a closed state and the semiconductor device 106 is in a blocked state, the switch element 108 can transmit current input through the input terminal 102 to the output terminal 104 and transmit current input through the output terminal 104 to the input terminal 102 .

[0063] For example, when the switch element 108 is in a closed state and the semiconductor device 106 is in a blocked state, the input terminal 102 and the output terminal 104 are in a conductive state.

[0064] When the switch element 108 is in the off state and the semiconductor device 106 is in the on state, the semiconductor device 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 .

[0065] For example, when the switch element 108 is in the off state and the semiconductor device 106 is in the on state, the input terminal 102 and the output terminal 104 are in a conductive state.

[0066] When the switching element 108 is in the off state and the semiconductor device 106 is in the blocked state, the semiconductor device 106 and the switching element 108 can block the current input through the input terminal 102 and the output terminal 104 .

[0067] For example, when the switch element 108 is in the off state and the semiconductor device 106 is in the blocked state, the input terminal 102 and the output terminal 104 are in a disconnected state.

[0068] The heat sink-less hybrid solid-state switch 100 in this embodiment improves the state switching speed of the heat sink-less hybrid solid-state switch 100 by switching the states of the semiconductor device 106 and the switch element 108 , while simplifying the circuit structure of the heat sink-less hybrid solid-state switch 100 .

[0069] In one embodiment of the present application, a heat sink-less hybrid solid-state switch 100 is provided, wherein the semiconductor device 106 includes a first insulated gate bipolar transistor 1062 , a second insulated gate bipolar transistor 1064 , a first diode 1066 , and a second diode 1068 ;

[0070] The collector of the first insulated gate bipolar transistor 1062 is connected to the collector of the second insulated gate bipolar transistor 1064 , the emitter of the first insulated gate bipolar transistor 1062 is connected to the output terminal 104 , and the emitter of the second insulated gate bipolar transistor 1064 is connected to the input terminal 102 ;

[0071] An anode of the first diode 1066 is connected to the emitter of the first insulated gate bipolar transistor 1062 , and a cathode of the first diode 1066 is connected to the collector of the first insulated gate bipolar transistor 1062 ;

[0072] An anode of the second diode 1068 is connected to the collector of the second insulated gate bipolar transistor 1064 , and a cathode of the second diode 1068 is connected to the emitter of the second insulated gate bipolar transistor 1064 .

[0073] In this embodiment, the semiconductor device 106 includes a first insulated gate bipolar transistor 1062 , a second insulated gate bipolar transistor 1064 , a first diode 1066 , and a second diode 1068 .

[0074] It should be noted that the collector of the first insulated gate bipolar transistor 1062 is connected to the collector of the second insulated gate bipolar transistor 1064, the emitter of the first insulated gate bipolar transistor 1062 is connected to the output terminal 104, the emitter of the second insulated gate bipolar transistor 1064 is connected to the input terminal 102, the anode of the first diode 1066 is connected to the emitter of the first insulated gate bipolar transistor 1062, the cathode of the first diode 1066 is connected to the collector of the first insulated gate bipolar transistor 1062, the anode of the second diode 1068 is connected to the collector of the second insulated gate bipolar transistor 1064, and the cathode of the second diode 1068 is connected to the emitter of the second insulated gate bipolar transistor 1064.

[0075] For example, the collector of the first insulated gate bipolar transistor 1062 may transmit the current through the second diode 1068 to the output terminal 104 .

[0076] For example, the collector of the second insulated gate bipolar transistor 1064 may transmit the current passing through the first diode 1066 to the input terminal 102 .

[0077] The semiconductor device 106 of the heat sink-less hybrid solid-state switching switch 100 in this embodiment includes a first insulated gate bipolar transistor 1062, a second insulated gate bipolar transistor 1064, a first diode 1066, and a second diode 1068, which improves the state switching speed of the semiconductor device 106, thereby improving the state switching speed of the heat sink-less hybrid solid-state switching switch 100.

[0078] In one embodiment of the present application, as shown in FIG2 , a control method for a heat sink-less hybrid solid-state switch is proposed. The control method for a heat sink-less hybrid solid-state switch includes:

[0079] Step 202: When the power grid is in a power supply state, the semiconductor device of the heat sink-less hybrid solid-state switch is turned on, and the switching element of the heat sink-less hybrid solid-state switch is closed; when the switching element is in the closed state, the semiconductor device is locked, and power is supplied to the load through the power grid;

[0080] Step 204 , when the grid is in a power-off state, the semiconductor devices of the heat sink-less hybrid solid-state switch are locked, and the switching elements of the heat sink-less hybrid solid-state switch are disconnected, and the load is powered by the energy storage converter and the battery.

[0081] In this embodiment, a control method for a heatsink-less hybrid solid-state switching switch is provided, wherein the heatsink-less hybrid solid-state switching switch is the heatsink-less hybrid solid-state switching switch in any one of the above embodiments, the heatsink-less hybrid solid-state switching switch is used to control a power supply system, the power supply system is used to supply power to a load, the power supply system includes an energy storage inverter, a battery, a power grid and a heatsink-less hybrid solid-state switching switch, the heatsink-less hybrid solid-state switching switch is connected to the power grid, the energy storage inverter is connected to the battery, the heatsink-less hybrid solid-state switching switch is connected to the energy storage inverter, and the load is connected to the heatsink-less hybrid solid-state switching switch and the energy storage inverter, respectively, wherein the heatsink-less hybrid 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.

[0082] Exemplarily, the battery may be a DC energy storage battery, and the power grid may be an AC power grid.

[0083] 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 turns on the semiconductor device of the heat sink-less hybrid solid-state switch and closes the switching element of the heat sink-less hybrid solid-state switch.

[0084] 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.

[0085] After the switching element is closed, the power supply system detects the state of the semiconductor device. When the switching element is in the closed state, the semiconductor device is locked and power is supplied to the load through the power grid.

[0086] It should be noted that the state switching time of the semiconductor devices inside the heat sink-free hybrid solid-state switching switch is shorter than the state switching time of the switching elements, which improves the state switching speed of the heat sink-free hybrid solid-state switching switch and ensures the power switching speed of the power supply system. At the same time, the loss of the switching element is less than the loss of the semiconductor device. After closing the switching element, the semiconductor device is locked, which reduces the loss of the heat sink-free hybrid solid-state switching switch. Therefore, there is no need to deploy a heat dissipation device for the heat sink-free hybrid solid-state switching switch.

[0087] For example, the state switching time of the heat sink-free hybrid solid-state switch may be specifically within 5 ms.

[0088] When the power grid is in a power-off state, it means that the power grid cannot supply power normally. The power supply system locks the semiconductor devices of the heat sink-less hybrid solid-state switch and disconnects the switching elements of the heat sink-less hybrid 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.

[0089] 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 shut down the energy storage converter.

[0090] The control method of the heat sink-less hybrid solid-state switching switch in this embodiment turns on the semiconductor device of the heat sink-less hybrid solid-state switching switch and closes the switch element of the heat sink-less hybrid solid-state switching switch when the power grid is in a power supply state. After closing the switch element, the state of the semiconductor device is detected. When the switch element is in a closed state, the semiconductor device is locked, and the load is powered by the power grid. When the power grid is in a power-off state, the semiconductor device of the heat sink-less hybrid solid-state switching switch is locked, and the switch element of the heat sink-less hybrid solid-state switching switch is disconnected, thereby disconnecting the power grid and the load, starting the energy storage converter, and powering the load through the energy storage converter and the battery, thereby greatly shortening the power switching time of the power supply system, improving the power switching speed of the power supply system, and ensuring the operational stability of the power supply system.

[0091] In one embodiment of the present application, as shown in FIG3 , a control method for a heat sink-less hybrid solid-state switch is proposed. The control method for a heat sink-less hybrid solid-state switch includes:

[0092] Step 302: When the power grid is in a power supply state, the semiconductor device of the heat sink-less hybrid solid-state switch is turned on, and the switching element of the heat sink-less hybrid solid-state switch is closed; when the switching element is in the closed state, the semiconductor device is locked, and power is supplied to the load through the power grid;

[0093] Step 304: When the power grid is in a power-off state, the semiconductor device of the heat sink-less hybrid solid-state switch is locked, and the switching element of the heat sink-less hybrid solid-state switch is disconnected, and the load is powered by the energy storage converter and the battery;

[0094] Step 306: 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;

[0095] Step 308 : When the second voltage is equal to the first voltage and the second phase is equal to the first phase, the load is supplied with power through the power grid, and the energy storage converter is stopped.

[0096] 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 heat sink-less hybrid solid-state switch, and detects the first voltage and first phase of the power grid. According to the first voltage and first phase of the power grid, the second voltage and second phase of the energy storage converter are adjusted, wherein the power supply state of the power grid is the operating state of the power grid, 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.

[0097] 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 heat sink-less hybrid solid-state switch disconnected and continues to power the load by the energy storage converter and the battery.

[0098] 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.

[0099] 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.

[0100] The control method of the heat sink-less hybrid solid-state switching switch in this embodiment closes the heat sink-less hybrid solid-state switching switch and detects the first voltage and the first phase of the grid when the load is powered by the energy storage converter and the battery and the grid is in a power supply state. According to the first voltage and the first phase of the grid, the second voltage and the second phase of the energy storage converter 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 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.

[0101] In one embodiment of the present application, as shown in FIG4 , a control method for a heat sink-less hybrid solid-state switch is proposed. The control method for a heat sink-less hybrid solid-state switch includes:

[0102] Step 402: When the power grid is in a power supply state, the semiconductor device of the heat sink-less hybrid solid-state switch is turned on, and the switching element of the heat sink-less hybrid solid-state switch is closed; when the switching element is in the closed state, the semiconductor device is locked, and power is supplied to the load through the power grid;

[0103] Step 404: When the power grid is in a power-off state, the semiconductor device of the heat sink-less hybrid solid-state switch is locked, and the switching element of the heat sink-less hybrid solid-state switch is disconnected. The DC power output by the battery is converted into AC power through the energy storage converter to connect the battery and the load.

[0104] Step 406: Power the load via the battery.

[0105] 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.

[0106] Exemplarily, the power supply system disconnects the heat sink-less hybrid solid-state switch, starts the energy storage converter, and then supplies power to the load through the battery.

[0107] The control method of the heat sink-free hybrid 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 be guaranteed to supply power to the load normally.

[0108] In one embodiment of the present application, as shown in FIG5 , a control method for a heat sink-less hybrid solid-state switch is proposed. The control method for a heat sink-less hybrid solid-state switch includes:

[0109] Step 502: When the power grid is in a power supply state, the semiconductor device of the heat sink-less hybrid solid-state switch is turned on, and the switching element of the heat sink-less hybrid solid-state switch is closed; when the switching element is in the closed state, the semiconductor device is locked, and power is supplied to the load through the power grid;

[0110] Step 504: Detect the battery power level. If the battery power level is less than a power threshold, charge the battery via the energy storage converter and the power grid.

[0111] Step 506 , when the grid is in a power-off state, the semiconductor devices of the heat sink-less hybrid solid-state switch are locked, and the switching elements of the heat sink-less hybrid solid-state switch are 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 charges the battery through the energy storage inverter and the power grid, wherein 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 heat sink-free hybrid solid-state switching switch in this embodiment detects the battery power level. When the battery power level is less than the power threshold, the battery is charged through the energy storage inverter and the power grid, thereby ensuring sufficient battery power and thus ensuring the operational stability of the power supply system.

[0115] In one embodiment of the present application, as shown in FIG6 , a control method for a heat sink-less hybrid solid-state switch is proposed. The control method for a heat sink-less hybrid solid-state switch includes:

[0116] Step 602: When the power grid is in a power supply state, the semiconductor device of the heat sink-less hybrid solid-state switch is turned on, and the switching element of the heat sink-less hybrid solid-state switch is closed; when the switching element is in the closed state, the semiconductor device is locked, and power is supplied to the load through the power grid;

[0117] Step 604: Detecting the battery power level. If the battery power level is less than a power threshold, converting the AC power output from the grid into DC power via an energy storage converter to connect the grid and the battery.

[0118] Step 606, charging the battery through the power grid;

[0119] Step 608 , when the grid is in a power-off state, the semiconductor devices of the heat sink-less hybrid solid-state switch are locked, and the switching elements of the heat sink-less hybrid solid-state switch are disconnected, and the load is powered by the energy storage converter and the battery.

[0120] 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 from 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.

[0121] Exemplarily, when the power level of the battery is greater than the power threshold, the power supply system does not charge the battery.

[0122] The control method of the heat sink-free hybrid 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 inverter 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.

[0123] As shown in FIG7 , an embodiment of the present application provides a control device 700 for a heat sink-less hybrid solid-state switch. The control device 700 for a heat sink-less hybrid solid-state switch includes:

[0124] The control module 702 is configured to, when the power grid is in a power supply state, turn on the semiconductor device of the heat sink-less hybrid solid-state switch and close the switch element of the heat sink-less hybrid solid-state switch; when the switch element is in a closed state, lock the semiconductor device and supply power to the load through the power grid;

[0125] The control module 702 is further configured to lock the semiconductor devices of the heat sink-less hybrid solid-state switch and disconnect the switching elements of the heat sink-less hybrid solid-state switch when the power grid is in a power-off state, thereby supplying power to the load through the energy storage converter and the battery.

[0126] In this embodiment, a control device 700 for a heatsink-less hybrid solid-state switching switch is provided. The heatsink-less hybrid solid-state switching switch is the heatsink-less hybrid solid-state switching switch in any of the above embodiments. The heatsink-less hybrid solid-state switching switch is used to control a power supply system. The power supply system is used to supply power to a load. The power supply system includes an energy storage inverter, a battery, a power grid and a heatsink-less hybrid solid-state switching switch. The heatsink-less hybrid solid-state switching switch is connected to the power grid, the energy storage inverter is connected to the battery, the heatsink-less hybrid solid-state switching switch is connected to the energy storage inverter, and the load is connected to the heatsink-less hybrid solid-state switching switch and the energy storage inverter, respectively. The heatsink-less hybrid solid-state switching switch is a switch used to switch power supply between the power grid and the battery, and the energy storage inverter is a device for converting current.

[0127] Exemplarily, the battery may be a DC energy storage battery, and the power grid may be an AC power grid.

[0128] 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 turns on the semiconductor device of the heat sink-less hybrid solid-state switch and closes the switching element of the heat sink-less hybrid solid-state switch.

[0129] 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.

[0130] After the switching element is closed, the power supply system detects the state of the semiconductor device. When the switching element is in the closed state, the semiconductor device is locked and power is supplied to the load through the power grid.

[0131] It should be noted that the state switching time of the semiconductor devices inside the heat sink-free hybrid solid-state switching switch is shorter than the state switching time of the switching elements, which improves the state switching speed of the heat sink-free hybrid solid-state switching switch and ensures the power switching speed of the power supply system. At the same time, the loss of the switching element is less than the loss of the semiconductor device. After closing the switching element, the semiconductor device is locked, which reduces the loss of the heat sink-free hybrid solid-state switching switch. Therefore, there is no need to deploy a heat dissipation device for the heat sink-free hybrid solid-state switching switch.

[0132] Exemplarily, the state switching time of the heat sink-free hybrid solid-state switch may be specifically within 5 ms.

[0133] When the power grid is in a power-off state, it means that the power grid cannot supply power normally. The power supply system locks the semiconductor devices of the heat sink-less hybrid solid-state switch and disconnects the switching elements of the heat sink-less hybrid 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.

[0134] 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 shut down the energy storage converter.

[0135] Exemplarily, as shown in FIG8 , the power supply system includes a heat sink-less hybrid 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.

[0136] For example, as shown in FIG9 , 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, the trigger (i.e., the switching element) of the heat sink-free hybrid solid-state switch is turned on, and the energy storage converter is soft-started to supply power to the load using the energy storage power supply 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 converter is adjusted. The voltage and phase of the energy storage converter are detected, and the voltage and phase of the power grid are detected to determine whether the voltage and phase of the energy storage converter are equal to the voltage and phase of the power grid. When the voltage and phase of the energy storage converter are not equal to the voltage and phase of the power grid, the voltage and phase of the energy storage converter are continued to be detected. When the voltage and phase of the energy storage converter are equal to the voltage and phase of the power grid, all semiconductors of the heat sink-free hybrid solid-state switching switch are triggered to be turned on, and the trigger is closed. When the trigger is closed, all semiconductors of the heat sink-free hybrid solid-state switching switch are locked, the energy storage converter is controlled to standby, and the load is powered by the power grid.

[0137] The control device 700 of the heat sink-less hybrid solid-state switching switch in this embodiment turns on the semiconductor device of the heat sink-less hybrid solid-state switching switch and closes the switch element of the heat sink-less hybrid solid-state switching switch when the power grid is in a power supply state. After closing the switch element, the state of the semiconductor device is detected. When the switch element is in a closed state, the semiconductor device is locked, and the load is powered by the power grid. When the power grid is in a power-off state, the semiconductor device of the heat sink-less hybrid solid-state switching switch is locked, and the switch element of the heat sink-less hybrid solid-state switching switch is disconnected, thereby disconnecting the power grid and the load, starting the energy storage converter, and powering the load through the energy storage converter and the battery, thereby greatly shortening the power switching time of the power supply system, improving the power switching speed of the power supply system, and ensuring the operational stability of the power supply system.

[0138] In one embodiment of the present application, the control device 700 of the heat sink-free hybrid solid-state switch further includes:

[0139] The control module 702 is further configured 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 grid when the grid is in a power supply state;

[0140] The control module 702 is further configured 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.

[0141] The control device 700 of the heat sink-less hybrid solid-state switching switch in this embodiment closes the heat sink-less hybrid solid-state switching switch and detects the first voltage and first phase of the grid when the load is powered by the energy storage inverter and the battery and the 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 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 grid and stops operating the energy storage inverter, thereby ensuring the normal operation of the power supply system and ensuring the operational safety of the power supply system.

[0142] In one embodiment of the present application, the control device 700 of the heat sink-free hybrid solid-state switch further includes:

[0143] The control module 702 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;

[0144] The control module 702 is further configured to supply power to the load via a battery.

[0145] The control device 700 of the heat sink-free hybrid solid-state switching switch in this embodiment starts the energy storage inverter, and 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 can provide normal power to the load.

[0146] In one embodiment of the present application, the control device 700 of the heat sink-free hybrid solid-state switch further includes:

[0147] The control module 702 is further configured to detect the battery power level, and when the battery power level is less than a power threshold, charge the battery through the energy storage converter and the power grid.

[0148] The control device 700 of the heat sink-free hybrid solid-state switching switch in this embodiment detects the battery power level. When the battery power level is less than the power threshold, the battery is charged through the energy storage inverter and the power grid, thereby ensuring sufficient battery power and thus ensuring the operational stability of the power supply system.

[0149] In one embodiment of the present application, the control device 700 of the heat sink-free hybrid solid-state switch further includes:

[0150] The control module 702 is further configured to convert the AC power outputted by the power grid into DC power via the energy storage converter, so as to connect the power grid and the battery;

[0151] The control module 702 is further configured to charge the battery through the power grid.

[0152] The control device 700 of the heat sink-free hybrid 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, and then control the power grid to charge the battery, thereby ensuring sufficient battery power and thus ensuring the operational stability of the power supply system.

[0153] In one embodiment of the present application, as shown in FIG10 , a control device 1000 for a heatsink-less hybrid solid-state switch is provided. The control device 1000 includes a processor 1002 and a memory 1004. The memory 1004 stores a program or instruction that, when executed by the processor 1002, implements the steps of the control method for a heatsink-less hybrid solid-state switch described in any of the aforementioned technical solutions. Therefore, the control device 1000 for a heatsink-less hybrid solid-state switch has all the advantages of the control method for a heatsink-less hybrid solid-state switch described in any of the aforementioned technical solutions, and will not be further elaborated upon herein.

[0154] In one embodiment of the present application, a readable storage medium is provided, on which a program is stored. When the program is executed by a processor, the control method of the heat sink-less hybrid solid-state switching switch in any of the above embodiments is implemented, thereby having all the beneficial technical effects of the control method of the heat sink-less hybrid solid-state switching switch in any of the above embodiments.

[0155] The readable storage medium includes a read-only memory (ROM), a random access memory (RAM), a magnetic disk, or an optical disk.

[0156] 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.

[0157] 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.

[0158] 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 heat sink-free hybrid solid-state switch, wherein: The heat sink-free hybrid solid-state switch is used to control the on-off between the AC power supply and the load, and the heat sink-free hybrid solid-state switch includes: An input terminal connected to the AC power source; an output terminal connected to the load; a semiconductor device, one end of the semiconductor device being connected to the input terminal, and the other end of the semiconductor device being connected to the output terminal; a switch element, one end of which is connected to the input terminal, and the other end of which is connected to the output terminal; When the switch element is in an open state and the semiconductor device is in a locked state, the input terminal and the output terminal are in an open state; when the switch element is in a closed state and / or the semiconductor device is in a connected state, the input terminal and the output terminal are in a connected state; The state switching time of the semiconductor device is shorter than the state switching time of the switch element, and the loss of the switch element is smaller than the loss of the semiconductor device.

2. The heat sink-free hybrid solid-state switch according to claim 1, wherein: When the switch element is closed and the semiconductor device is connected, the semiconductor device and the switch element are 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 the switch element is in a closed state and the semiconductor device is in a locked state, the switch element 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 the switch element is disconnected and the semiconductor device is connected, the semiconductor device 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 the switch element is in an off state and the semiconductor device is in a locked state, the semiconductor device and the switch element are used to block the current input through the input terminal and the output terminal. flow.

3. The heat sink-free hybrid solid-state switch according to claim 2, wherein: The semiconductor device includes a first insulated gate bipolar transistor, a second insulated gate bipolar transistor, a first diode and a second diode; 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; An anode of the first diode is connected to an emitter of the first insulated gate bipolar transistor, and a cathode of the first diode is connected to a collector of the first insulated gate bipolar transistor; An anode of the second diode is connected to the collector of the second insulated gate bipolar transistor, and a cathode of the second diode is connected to the emitter of the second insulated gate bipolar transistor.

4. A control method for a heat sink-free hybrid solid-state switch, wherein: The heat sink-less hybrid solid-state switching switch is the heat sink-less hybrid solid-state switching switch according to any one of claims 1 to 3, the heat sink-less hybrid 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 inverter, a battery, a power grid and the heat sink-less hybrid solid-state switching switch, the heat sink-less hybrid solid-state switching switch is connected to the power grid, the energy storage inverter is connected to the battery, the heat sink-less hybrid solid-state switching switch is connected to the energy storage inverter, the load is respectively connected to the heat sink-less hybrid solid-state switching switch and the energy storage inverter, and the control method of the heat sink-less hybrid solid-state switching switch includes: When the power grid is in a power supply state, the semiconductor device of the heat sink-free hybrid solid-state switch is turned on, and the switch element of the heat sink-free hybrid solid-state switch is closed; when the switch element is in a closed state, the semiconductor device is locked, and the load is powered by the power grid; When the power grid is in a power-off state, the semiconductor device of the heat sink-free hybrid solid-state switch is locked, and the switch element of the heat sink-free hybrid solid-state switch is disconnected, and the load is powered by the energy storage inverter and the battery.

5. The control method of the heat sink-free hybrid solid-state switch according to claim 4, 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, according to the first voltage and the first phase of the power grid position, adjusting a second voltage and a second phase of the energy storage converter; When the second voltage is equal to the first voltage and the second phase is equal to the first phase, the load is powered by the power grid, and the energy storage converter is stopped.

6. The control method of the heat sink-free hybrid solid-state switch according to claim 4, wherein: The supplying power to the load by the energy storage converter and the battery specifically includes: The direct current output by the battery is converted into alternating current by the energy storage converter to connect the battery and the load; The load is powered by the battery.

7. The control method of a heat sink-free hybrid solid-state switch according to any one of claims 4 to 6, wherein: After the load is supplied with power by the power grid, the method further includes: The power level of the battery is detected, and when the power level of the battery is less than a power threshold, the battery is charged through the energy storage converter and the power grid.

8. The control method of the heat sink-free hybrid solid-state switch according to claim 7, wherein: The charging of the battery through the energy storage converter and the power grid specifically includes: The AC power outputted by the power grid is converted into DC power by the energy storage converter to connect the power grid and the battery; The battery is charged through the power grid.

9. A control device for a heat sink-free hybrid 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 heat sink-free hybrid solid-state switching switch as described in any one of claims 4 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 an instruction, and when the program or the instruction is executed by the processor, the steps of the control method of the heat sink-free hybrid solid-state switching switch according to any one of claims 4 to 8 are implemented.

Images