Auxiliary power supply power-off control method and device of bidirectional inverter, and storage medium

Abstract

The present invention discloses a method and device for controlling the power-off of an auxiliary power supply of a bidirectional inverter, and a storage medium, wherein the method for controlling the power-off of the auxiliary power supply comprises: when it is detected that the photovoltaic input port of the photovoltaic module is not connected to the photovoltaic, continuously obtaining the real-time input voltage of the photovoltaic input port; judging the magnitude relationship between the real-time input voltage of the photovoltaic input port and the minimum start-up voltage of the auxiliary power supply and the minimum start-up voltage of the photovoltaic input port, and obtaining a real-time judgment result; and adjusting the working state of the photovoltaic module according to the real-time judgment result to realize the power-off of the auxiliary power supply. In the present invention, without adding a relay at the photovoltaic input port and its driving circuit, the auxiliary power supply can be completely powered off only by software control, which is not only more convenient and simple to implement, but also can reduce the device cost of the inverter, save PCB space, and optimize the EMC effect.

Description

Technical Field

[0001] The present invention relates to the field of power electronic control technology, and in particular to a method and device for controlling power-off of an auxiliary power supply of a bidirectional inverter, an electronic device, and a computer-readable storage medium. Background Art

[0002] With the continuous development of energy storage business, small-scale energy storage technology has gradually matured. As the main component of the energy storage system, bidirectional inverters have basically integrated photovoltaic MPPT in recent years. By adding new working modes, the application diversity of small-scale energy storage technology has been improved.

[0003] When the bidirectional inverter is connected to the system master, the battery provides input voltage for the auxiliary power supply, so that the auxiliary power supply starts to work normally. At this time, the auxiliary power supply starts to provide driving voltage for the bootstrap drive circuit, and the bootstrap drive circuit drives the photovoltaic module of the bidirectional inverter. In this process, a residual voltage will be formed inside the photovoltaic module. The residual voltage is transmitted to the photovoltaic input port of the photovoltaic module. When the communication between the system master and the bidirectional inverter is disconnected, the residual voltage at the photovoltaic input port will cause the auxiliary power supply to be unable to be completely powered off. At present, the market adds a relay and its corresponding circuit to the photovoltaic input port to separate the circuit that generates the residual voltage from the photovoltaic input port, so that a current loop cannot be formed to achieve the power-off of the auxiliary power supply, but this increases the device cost of the inverter and also occupies additional PCB space, and the EMC effect is not good. Summary of the invention

[0004] The present invention aims to solve at least one of the technical problems in the related art to a certain extent. To this end, the present invention proposes a method and device for controlling power-off of an auxiliary power supply of a bidirectional inverter, an electronic device, and a computer-readable storage medium, which can reduce the device cost of the inverter, save PCB space, and optimize the EMC effect.

[0005] In a first aspect, an embodiment of the present invention provides a method for controlling power-off of an auxiliary power supply of a bidirectional inverter, wherein the bidirectional inverter includes a photovoltaic module, a charging output port of the photovoltaic module is connected to a battery terminal, the battery terminal is used to provide an input voltage for the auxiliary power supply, the auxiliary power supply is connected to a bootstrap drive circuit, and the bootstrap drive circuit is used to drive the photovoltaic module, the method includes:

[0006] When it is detected that the photovoltaic input port of the photovoltaic module is not connected to photovoltaic, continuously obtaining the real-time input voltage of the photovoltaic input port;

[0007] Determine the relationship between the real-time input voltage of the photovoltaic input port, the minimum start-up voltage of the auxiliary power supply, and the minimum start-up voltage of the photovoltaic input port to obtain a real-time determination result;

[0008] The working state of the photovoltaic module is adjusted according to the real-time judgment result to realize power-off of the auxiliary power supply.

[0009] Optionally, in one embodiment of the present invention, the real-time judgment result is a first real-time judgment result or a second real-time judgment result, the first real-time judgment result characterizes that the real-time input voltage of the photovoltaic input port reaches the minimum start-up voltage of the auxiliary power supply, and the second real-time judgment result characterizes that the real-time input voltage of the photovoltaic input port reaches the minimum start-up voltage of the photovoltaic input port, wherein the minimum start-up voltage of the photovoltaic input port is greater than the minimum start-up voltage of the auxiliary power supply.

[0010] Optionally, in one embodiment of the present invention, the photovoltaic module includes an energy storage inductor, a Buck-Boost upper bridge arm unit and a Buck-Boost lower bridge arm unit, the energy storage inductor is connected between the Buck-Boost upper bridge arm unit and the Buck-Boost lower bridge arm unit, and the photovoltaic input port is respectively connected to the Buck-Boost upper bridge arm unit and the Buck-Boost lower bridge arm unit; the adjusting the working state of the photovoltaic module according to the real-time judgment result to realize the power-off of the auxiliary power supply includes:

[0011] When the real-time judgment result is the first real-time judgment result, the Buck-Boost lower bridge arm unit is controlled to intermittently generate waves to realize power-off of the auxiliary power supply.

[0012] Optionally, in an embodiment of the present invention, adjusting the working state of the photovoltaic module according to the real-time judgment result to achieve power-off of the auxiliary power supply further includes:

[0013] When the real-time judgment result is the second real-time judgment result, the Buck-Boost upper bridge arm unit and the Buck-Boost lower bridge arm unit are controlled to generate waves normally, so as to realize power-off of the auxiliary power supply.

[0014] In a second aspect, an embodiment of the present invention provides an auxiliary power supply power-off control device for a bidirectional inverter, wherein the bidirectional inverter includes a photovoltaic module, a charging output port of the photovoltaic module is connected to a battery terminal, the battery terminal is used to provide an input voltage for the auxiliary power supply, the auxiliary power supply is connected to a bootstrap drive circuit, and the bootstrap drive circuit is used to drive the photovoltaic module, and the device includes:

[0015] A voltage acquisition module, used for continuously acquiring a real-time input voltage of the photovoltaic input port when it is detected that the photovoltaic input port of the photovoltaic module is not connected to photovoltaic;

[0016] A judgment module, used to judge the relationship between the real-time input voltage of the photovoltaic input port and the minimum start-up voltage of the auxiliary power supply and the minimum start-up voltage of the photovoltaic input port, and obtain a real-time judgment result;

[0017] The state control module is used to adjust the working state of the photovoltaic module according to the real-time judgment result to realize the power-off of the auxiliary power supply.

[0018] In a third aspect, an embodiment of the present invention provides an electronic device, including:

[0019] at least one processor;

[0020] at least one memory for storing at least one program;

[0021] When at least one of the programs is executed by at least one of the processors, the auxiliary power supply power-off control method of the bidirectional inverter as described in the first aspect is implemented.

[0022] In a fourth aspect, an embodiment of the present invention provides a computer-readable storage medium, which stores a program executable by a processor, and when the program executable by the processor is executed by the processor, it is used to implement the auxiliary power supply power-off control method of the bidirectional inverter as described in the first aspect.

[0023] The auxiliary power supply power-off control method, device and storage medium of the bidirectional inverter proposed in the present invention continuously obtain the real-time input voltage of the photovoltaic input port when it is detected that the photovoltaic input port of the photovoltaic module is not connected to the photovoltaic, and then obtain the required real-time judgment result by judging the relative size between the real-time input voltage and the minimum start-up voltage of the auxiliary power supply and the minimum start-up voltage of the photovoltaic input port, so as to adjust the working state of the photovoltaic module accordingly according to the obtained real-time judgment result, so as to realize the auxiliary power supply power-off. Compared with the relevant existing technology, without adding a relay and a driving circuit at the photovoltaic input port, the auxiliary power supply can be completely powered off only by software control, which is not only more convenient and simple to implement, but also can reduce the device cost of the inverter, save PCB space and optimize the EMC effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 It is a flow chart of a method for controlling power-off of an auxiliary power supply of a bidirectional inverter provided by an embodiment of the present invention;

[0025] Figure 2 is a topological schematic diagram of a photovoltaic module and its related circuits provided by an embodiment of the present invention;

[0026] Figure 3 is a topological principle diagram of a photovoltaic module provided by an embodiment of the present invention;

[0027] Figure 4 yes Figure 1 A flow chart of step S3000 in FIG.

[0028] Figure 5 1 is a schematic diagram of an execution method of controlling power-off of an auxiliary power supply of a bidirectional inverter provided by an embodiment of the present invention;

[0029] Figure 6 yes Figure 1 Another flow chart of step S3000 in FIG.

[0030] Figure 7 is a topological schematic diagram of a photovoltaic module and related circuits provided by another embodiment of the present invention;

[0031] Figure 8 It is a structural schematic diagram of an auxiliary power supply power-off control device of a bidirectional inverter provided by an embodiment of the present invention;

[0032] Fig. 9 It is a structural schematic diagram of an electronic device provided by an embodiment of the present invention. DETAILED DESCRIPTION

[0033] In order to make the purpose, technical solution and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.

[0034] Figure 1 The flowchart of the auxiliary power supply power-off control method of the bidirectional inverter provided by one embodiment of the present invention. Figure 1 As shown, the auxiliary power supply power-off control method of the bidirectional inverter may include but is not limited to steps S1000 to S3000.

[0035] Step S1000: when it is detected that the photovoltaic input port of the photovoltaic module is not connected to the photovoltaic power supply, the real-time input voltage of the photovoltaic input port is continuously obtained;

[0036] Step S2000, determining the magnitude relationship between the real-time input voltage of the photovoltaic input port and the minimum start-up voltage of the auxiliary power supply and the minimum start-up voltage of the photovoltaic input port, and obtaining a real-time determination result, wherein the specific values ​​of the minimum start-up voltage of the auxiliary power supply and the minimum start-up voltage of the photovoltaic input port are not limited and can be set accordingly by those skilled in the art according to different application scenarios;

[0037] Step S3000: adjusting the working state of the photovoltaic module according to the real-time judgment result to realize power-off of the auxiliary power supply.

[0038] It should be noted that the specific structure and parameters of the bidirectional inverter and the auxiliary power supply can be various, and they need to be set or determined accordingly according to different application scenarios. For example, the bidirectional inverter can be but is not limited to a bidirectional inverter with integrated PFC+DCDC, and the auxiliary power supply can be implemented by a separate power module or by a power module in combination with a related power circuit, etc., which is not limited here.

[0039] In order to better illustrate the working principle of the auxiliary power supply power-off control method according to an embodiment of the present invention, a topological principle diagram of a photovoltaic module and its related circuits is given below as an example for detailed description.

[0040] Specifically, Figure 2 As shown, the photovoltaic module 100 is provided with a photovoltaic input port VIN (i.e., PV port) and a charging output port VOUT. The charging output port VOUT of the photovoltaic module 100 is connected to a battery terminal, and the battery terminal is used to provide an input voltage for an auxiliary power supply VCC. The auxiliary power supply VCC is connected to a bootstrap drive circuit (i.e., Figure 2 The switch tube driver chip M1 and its associated circuit shown in the figure, the associated circuit may include but is not limited to a first diode D1 and a first capacitor C3), the switch tube driver chip M1 is used to drive the photovoltaic module 100, wherein the photovoltaic module 100 may include but is not limited to an energy storage inductor L1, a Buck-Boost upper bridge arm unit and a Buck-Boost lower bridge arm unit, the energy storage inductor L1 is connected between the Buck-Boost upper bridge arm unit and the Buck-Boost lower bridge arm unit, the photovoltaic input port VIN is respectively connected to the Buck-Boost upper bridge arm unit and the Buck-Boost lower bridge arm unit, and the Buck-Boost circuit may be but is not limited to being a type of photovoltaic module 100; it can be seen that the Buck-Boost upper bridge arm unit and the Buck-Boost lower bridge arm unit are both configured with switch tubes, but this is not the only limitation, and those skilled in the art may also make corresponding settings according to different application scenarios, such as Figure 2 As shown, the Buck-Boost upper bridge arm unit includes switch tubes Q1 and Q3, and the Buck-Boost lower bridge arm unit includes switch tubes Q2 and Q4. In addition, the photovoltaic module 100 may also include but is not limited to a second capacitor C1 connected to the photovoltaic input port VIN and a third capacitor C2 connected to the charging output port VOUT.

[0041] It should be noted that the switch tube can include but is not limited to MOSFET or IGBT. The model and parameters of the switch tube driver chip M1 can be set according to different application scenarios and are not limited here. The number of switch tubes in each bridge arm unit can also be set accordingly according to specific circumstances. For example, if it is applied to the Buck circuit topology, refer to Figure 3The number of switch tubes in each bridge arm unit is set to 1, that is, the Buck-Boost upper bridge arm unit includes the switch tube Q5, and the Buck-Boost lower bridge arm unit includes the switch tube Q6.

[0042] It can be understood that, due to the existence of a voltage divider circuit inside the switch tube driver chip M1 (i.e., there is a voltage divider resistor in the undervoltage lockout circuit UVLO) and the equivalent impedance between the pins of other logic circuits, there is also an equivalent impedance between the source and drain (DS pole) of the switch tube Q2. The equivalent impedance inside the switch tube driver chip M1 and the equivalent impedance between the DS poles of the switch tube Q2 form a voltage divider, and the voltage divider passes through the body diode of the switch tube Q1. Then, assuming that the equivalent impedance between the pins of the switch tube driver chip M1 is R1, the equivalent impedance between the DS poles of the switch tube Q2 is R2, the on-state voltage of the switch tube Q1 is , then the voltage at the photovoltaic input port VIN for:

[0043] ;

[0044] in, The input power voltage provided by the auxiliary power supply VCC to the switch tube driver chip M1, is the conduction voltage of the first diode D1. It can be seen that the voltage of the photovoltaic input port VIN is a value greater than zero, which means that there is a residual voltage at the photovoltaic input port VIN.

[0045] In this step, when it is detected that the photovoltaic input port VIN of the photovoltaic module 100 is not connected to the photovoltaic, the real-time input voltage of the photovoltaic input port VIN is continuously obtained, and then the required real-time judgment result is obtained by judging the relative size between the real-time input voltage and the minimum start-up voltage of the auxiliary power supply VCC and the minimum start-up voltage of the photovoltaic input port VIN, so as to adjust the working state of the photovoltaic module 100 accordingly according to the obtained real-time judgment result, so as to realize the power-off of the auxiliary power supply VCC. Compared with the relevant existing technology, without adding the relay and the driving circuit at the photovoltaic input port VIN, the auxiliary power supply VCC can be completely powered off only by software control, which is not only more convenient and simple to implement, but also can reduce the device cost of the inverter, save PCB space, and optimize the EMC effect.

[0046] In one embodiment, the real-time judgment result may be, but is not limited to, a first real-time judgment result or a second real-time judgment result, wherein the first real-time judgment result indicates that the real-time input voltage of the photovoltaic input port VIN reaches the minimum start-up voltage of the auxiliary power supply VCC, and the second real-time judgment result indicates that the real-time input voltage of the photovoltaic input port VIN reaches the minimum start-up voltage of the photovoltaic input port VIN, wherein the minimum start-up voltage of the photovoltaic input port VIN is greater than the minimum start-up voltage of the auxiliary power supply VCC.

[0047] It should be noted that, in the normal working mode, when the voltage of the photovoltaic input port VIN is greater than or equal to the minimum start-up voltage of the auxiliary power supply VCC, that is, the voltage of the photovoltaic input is sufficient to reach the minimum voltage for the auxiliary power supply VCC to work normally, the auxiliary power supply VCC starts to work at this time; when the photovoltaic is connected, the voltage signal of the photovoltaic input port VIN is transmitted to the corresponding energy storage control system through the voltage divider resistor of the photovoltaic input port VIN, and the energy storage control system detects that there is photovoltaic input at the photovoltaic input port VIN. When the input voltage of the photovoltaic input port VIN reaches the set minimum start-up voltage of the photovoltaic input port VIN and the communication is set, the bidirectional inverter is controlled to start, and the photovoltaic module 100 starts to work.

[0048] One embodiment of the present invention, as Figure 4 As shown, step S3000 may include but is not limited to step S3100.

[0049] Step S3100: When the real-time judgment result is the first real-time judgment result, the Buck-Boost lower bridge arm unit is controlled to intermittently generate a wave to realize power-off of the auxiliary power supply VCC.

[0050] Specifically, Figure 5 As shown, combined Figure 2 It can be seen that when the real-time input voltage of the photovoltaic input port VIN reaches the minimum start-up voltage of the auxiliary power supply VCC, the auxiliary power supply VCC starts to work, and when the voltage signal of the photovoltaic input port VIN is detected, the switch tube driver chip M1 is controlled to drive the Buck-Boost lower bridge arm unit to perform intermittent wave generation, that is, the switch tube driver chip M1 drives the switch tube Q2 and the switch tube Q4 to perform intermittent wave generation, that is, the lower tube is driven to perform intermittent wave generation. At this time, the switch tube Q2 and the switch tube Q4 start to be turned on, and the residual voltage forms a loop with the ground terminal, so that the real-time input voltage of the photovoltaic input port VIN is 0. When only the battery terminal is connected, there is no voltage at the photovoltaic input port VIN, and the auxiliary power supply VCC is turned off. Obviously, this situation will not affect the normal operation function of the photovoltaic module 100.

[0051] One embodiment of the present invention, as Figure 6 As shown, step S3000 may include but is not limited to step S3200.

[0052] Step S3200: When the real-time judgment result is the second real-time judgment result, the Buck-Boost upper bridge arm unit and the Buck-Boost lower bridge arm unit are controlled to generate power normally, so as to power off the auxiliary power supply VCC.

[0053] Specifically, Figure 5 As shown, combined Figure 2 It can be seen that when the real-time input voltage of the photovoltaic input port VIN reaches the minimum start-up voltage of the photovoltaic input port VIN, the communication is set, and the auxiliary power supply VCC starts to work. When the voltage signal of the photovoltaic input port VIN is detected, the switch tube driver chip M1 is controlled to drive the Buck-Boost upper bridge arm unit and the Buck-Boost lower bridge arm unit to generate waves normally, that is, the upper and lower tubes are driven to generate waves normally, and the bidirectional inverter starts the photovoltaic mode. That is, during the energy storage process of the energy storage inductor L1, the switch tube driver chip M1 drives the switch tube Q1 and the switch tube Q4 to start conducting at the same time, and the switch tube Q2 and the switch tube Q3 start conducting at the same time. A loop is formed during the energy storage process, so that the real-time input voltage of the photovoltaic input port VIN is 0. When only the battery end is connected, there is no voltage at the photovoltaic input port VIN, and the auxiliary power supply VCC is turned off. Obviously, this situation does not affect the normal operation function of the photovoltaic module 100.

[0054] That is to say, in the actual process, the real-time input voltage (i.e., residual voltage) of the photovoltaic input port VIN is constantly increasing. Since the minimum startup voltage of the photovoltaic input port VIN is greater than the minimum startup voltage of the auxiliary power supply VCC, first, when the real-time input voltage of the photovoltaic input port VIN reaches the minimum startup voltage of the auxiliary power supply VCC, a corresponding working state adjustment step of the photovoltaic module 100 is performed, and then when the real-time input voltage of the photovoltaic input port VIN reaches the minimum startup voltage of the photovoltaic input port VIN, another corresponding working state adjustment step of the photovoltaic module 100 is performed. Such a control and adjustment method can ensure that no matter how the voltage of the photovoltaic input port VIN suddenly changes, it will not cause a misjudgment of the control logic, and will not cause the low-voltage energy storage system in the normal working mode to shut down unexpectedly, thereby improving the operating stability of the low-voltage energy storage system.

[0055] It should be noted that the execution subject of the auxiliary power supply power-off control method of the bidirectional inverter in the embodiment of the present invention can be various, and needs to be set accordingly according to different application scenarios, which is not limited here. For example, Figure 7, a corresponding energy storage control system is used as the executor of the auxiliary power supply power-off control method of the bidirectional inverter of the embodiment of the present invention, wherein the energy storage control system adopts an MCU, and the MCU can be but is not limited to being respectively connected to the switch tube driver chip M1, the Buck-Boost upper bridge arm unit, the Buck-Boost lower bridge arm unit, the photovoltaic input port VIN and the charging output port VOUT, etc., to play a role in overall control.

[0056] In addition, compared with another control method in the related prior art that directly detects whether the PV port is unplugged to determine whether to turn off the auxiliary power supply VCC, the auxiliary power supply power-off control method in the embodiment of the present invention is simpler and more reliable, and does not require a large number of different experimental verifications for photovoltaic panels of different powers. The control effect is more significant. Moreover, when the photovoltaic panel is in an unstable weather state (for example, the sun is suddenly blocked by clouds) or the photovoltaic panel is blocked due to other external factors, causing the voltage of the photovoltaic input port VIN to suddenly drop, it may cause software logic misjudgment, resulting in abnormal shutdown of the photovoltaic module 100. This is also a major defect of the prior art. The auxiliary power supply power-off control method in the embodiment of the present invention achieves complete power-off of the auxiliary power supply VCC by controlling the switching tube to generate waves. The logic is rigorous and will not affect the normal operation function of the photovoltaic module 100.

[0057] See also Figure 8 The embodiment of the present invention further provides an auxiliary power supply power-off control device for a bidirectional inverter, which can be used to implement the auxiliary power supply power-off control method for a bidirectional inverter shown in any of the above embodiments, wherein the bidirectional inverter includes a photovoltaic module, a charging output port of the photovoltaic module is connected to a battery terminal, the battery terminal is used to provide an input voltage for the auxiliary power supply, the auxiliary power supply is connected to a bootstrap drive circuit, and the bootstrap drive circuit is used to drive the photovoltaic module. The auxiliary power supply power-off control device for the bidirectional inverter includes:

[0058] The voltage acquisition module is used to continuously acquire the real-time input voltage of the photovoltaic input port when it is detected that the photovoltaic input port of the photovoltaic module is not connected to the photovoltaic;

[0059] A judgment module is used to judge the relationship between the real-time input voltage of the photovoltaic input port and the minimum start-up voltage of the auxiliary power supply and the minimum start-up voltage of the photovoltaic input port, and obtain a real-time judgment result;

[0060] The state control module is used to adjust the working state of the photovoltaic module according to the real-time judgment result to realize the power-off of the auxiliary power supply.

[0061] When it is detected that the photovoltaic input port of the photovoltaic module is not connected to the photovoltaic, the voltage acquisition module continuously acquires the real-time input voltage of the photovoltaic input port, and then the judgment module obtains the required real-time judgment result by judging the relative size between the real-time input voltage and the minimum start-up voltage of the auxiliary power supply and the minimum start-up voltage of the photovoltaic input port, so that the state control module adjusts the working state of the photovoltaic module accordingly according to the obtained real-time judgment result, and the auxiliary power supply can be powered off. Compared with the relevant existing technology, without adding a relay at the photovoltaic input port and its driving circuit, the auxiliary power supply can be completely powered off only by controlling the relevant modules. It is not only more convenient and simple to implement, but also can reduce the device cost of the inverter, save PCB space, and optimize the EMC effect.

[0062] The specific implementation of the auxiliary power supply power-off control device of the bidirectional inverter is basically the same as the specific implementation of the auxiliary power supply power-off control method of the bidirectional inverter mentioned above, and will not be repeated here.

[0063] Fig. 9 FIG. 1 is a schematic diagram of the structure of an electronic device 1000 provided by an embodiment of the present invention. Fig. 9 As shown, the electronic device 1000 includes a memory 1100 and a processor 1200. The number of the memory 1100 and the processor 1200 may be one or more. Fig. 9 In the embodiment, a memory 1100 and a processor 1200 are taken as an example; the memory 1100 and the processor 1200 in the device may be connected via a bus or other means. Fig. 9 The example of connecting through bus is taken in the following.

[0064] The memory 1100, as a computer-readable storage medium, can be used to store software programs, computer executable programs and modules, such as program instructions / modules corresponding to the auxiliary power supply power-off control method of the bidirectional inverter provided in any embodiment of the present invention. The processor 1200 implements the auxiliary power supply power-off control method of the bidirectional inverter by running the software programs, instructions and modules stored in the memory 1100.

[0065] The memory 1100 may mainly include a program storage area and a data storage area, wherein the program storage area may store an operating system and an application required for at least one function. In addition, the memory 1100 may include a high-speed random access memory, and may also include a non-volatile memory, such as at least one disk storage device, a flash memory device, or other non-volatile solid-state storage device. In some instances, the memory 1100 may further include a memory remotely arranged relative to the processor 1200, and these remote memories may be connected to the device via a network. Examples of the above-mentioned network include, but are not limited to, the Internet, an intranet, a local area network, a mobile communication network, and combinations thereof.

[0066] An embodiment of the present invention further provides a computer-readable storage medium storing computer-executable instructions for executing the auxiliary power supply power-off control method of the bidirectional inverter provided in any embodiment of the present invention.

[0067] An embodiment of the present invention also provides a computer program product, including a computer program or computer instructions, wherein the computer program or computer instructions are stored in a computer-readable storage medium, a processor of a computer device reads the computer program or computer instructions from the computer-readable storage medium, and the processor executes the computer program or computer instructions, so that the computer device executes the auxiliary power supply power-off control method of the bidirectional inverter provided in any embodiment of the present invention.

[0068] The electronic devices and application scenarios described in the embodiments of the present invention are intended to more clearly illustrate the technical solutions of the embodiments of the present invention, and do not constitute a limitation on the technical solutions provided by the embodiments of the present invention. Those skilled in the art will appreciate that with the evolution of electronic devices and the emergence of new application scenarios, the technical solutions provided by the embodiments of the present invention are equally applicable to similar technical problems.

[0069] Those skilled in the art will appreciate that all or some of the steps in the methods disclosed above, and the functional modules / units in the systems and devices may be implemented as software, firmware, hardware, or a suitable combination thereof.

[0070] In hardware implementation, the division between the functional modules / units mentioned in the above description does not necessarily correspond to the division of physical components; for example, a physical component may have multiple functions, or a function or step may be performed by several physical components in cooperation. Some or all physical components may be implemented as software executed by a processor, such as a central processing unit, a digital signal processor, or a microprocessor, or implemented as hardware, or implemented as an integrated circuit, such as an application-specific integrated circuit. Such software may be distributed on a computer-readable medium, which may include a computer storage medium (or non-transitory medium) and a communication medium (or transient medium). As is well known to those of ordinary skill in the art, the term computer storage medium includes volatile and non-volatile, removable and non-removable media implemented in any method or technology for storing information (such as computer-readable instructions, data structures, program modules, or other data). Computer storage media include, but are not limited to, RAM, ROM, EEPROM, flash memory or other memory technology, CD-ROM, digital versatile disk (DVD) or other optical disk storage, magnetic cassettes, magnetic tapes, disk storage or other magnetic storage devices, or any other medium that can be used to store desired information and can be accessed by a computer. Furthermore, it is well known to those skilled in the art that communication media typically embodies computer readable instructions, data structures, program modules, or other data in a modulated data signal such as a carrier wave or other transport mechanism, and may include any information delivery media.

[0071] The terms "component", "module", "system", etc. used in this specification are used to represent computer-related entities, hardware, firmware, a combination of hardware and software, software, or software in execution. For example, a component can be, but is not limited to, a process running on a processor, a processor, an object, an executable file, an execution thread, a program, or a computer. By way of illustration, both applications running on a computing device and a computing device can be components. One or more components may reside in a process or an execution thread, and a component may be located on a computer or distributed between two or more computers. In addition, these components may be executed from various computer-readable media having various data structures stored thereon. Components may, for example, communicate through a local or remote process based on a signal having one or more data packets (e.g., data from two components interacting with another component between a local system, a distributed system, or a network, such as the Internet interacting with other systems through signals).

Claims

1. A method for controlling power-off of an auxiliary power supply of a bidirectional inverter, characterized in that: The bidirectional inverter includes a photovoltaic module, the photovoltaic module includes an energy storage inductor, a Buck-Boost upper bridge arm unit and a Buck-Boost lower bridge arm unit, the energy storage inductor is connected between the Buck-Boost upper bridge arm unit and the Buck-Boost lower bridge arm unit, the photovoltaic input port of the photovoltaic module is respectively connected to the Buck-Boost upper bridge arm unit and the Buck-Boost lower bridge arm unit, the charging output port of the photovoltaic module is connected to the battery terminal, the battery terminal is used to provide an input voltage for the auxiliary power supply, the auxiliary power supply is connected to a bootstrap drive circuit, and the bootstrap drive circuit is used to drive the photovoltaic module, and the method includes: When it is detected that the photovoltaic input port is not connected to photovoltaic, continuously obtaining the real-time input voltage of the photovoltaic input port; Determine the magnitude relationship between the real-time input voltage of the photovoltaic input port and the minimum start-up voltage of the auxiliary power supply and the minimum start-up voltage of the photovoltaic input port to obtain a real-time judgment result, wherein the real-time judgment result is a first real-time judgment result or a second real-time judgment result, the first real-time judgment result indicates that the real-time input voltage of the photovoltaic input port reaches the minimum start-up voltage of the auxiliary power supply, the second real-time judgment result indicates that the real-time input voltage of the photovoltaic input port reaches the minimum start-up voltage of the photovoltaic input port, and the minimum start-up voltage of the photovoltaic input port is greater than the minimum start-up voltage of the auxiliary power supply; When the real-time judgment result is the first real-time judgment result, the Buck-Boost lower bridge arm unit is controlled to intermittently generate waves to realize power-off of the auxiliary power supply.

2. The auxiliary power supply power-off control method of the bidirectional inverter according to claim 1, characterized in that: The step of adjusting the working state of the photovoltaic module according to the real-time judgment result to realize power-off of the auxiliary power supply further includes: When the real-time judgment result is the second real-time judgment result, the Buck-Boost upper bridge arm unit and the Buck-Boost lower bridge arm unit are controlled to generate waves normally, so as to realize power-off of the auxiliary power supply.

3. A bidirectional inverter auxiliary power supply power-off control device, characterized in that: The bidirectional inverter includes a photovoltaic module, the photovoltaic module includes an energy storage inductor, a Buck-Boost upper bridge arm unit and a Buck-Boost lower bridge arm unit, the energy storage inductor is connected between the Buck-Boost upper bridge arm unit and the Buck-Boost lower bridge arm unit, the photovoltaic input port of the photovoltaic module is respectively connected to the Buck-Boost upper bridge arm unit and the Buck-Boost lower bridge arm unit, the charging output port of the photovoltaic module is connected to the battery terminal, the battery terminal is used to provide input voltage for the auxiliary power supply, the auxiliary power supply is connected to the bootstrap drive circuit, the bootstrap drive circuit is used to drive the photovoltaic module, the device includes: A voltage acquisition module, used for continuously acquiring the real-time input voltage of the photovoltaic input port when it is detected that the photovoltaic input port is not connected to photovoltaic; A judgment module, used for judging the magnitude relationship between the real-time input voltage of the photovoltaic input port and the minimum start-up voltage of the auxiliary power supply and the minimum start-up voltage of the photovoltaic input port, and obtaining a real-time judgment result, wherein the real-time judgment result is a first real-time judgment result or a second real-time judgment result, the first real-time judgment result indicates that the real-time input voltage of the photovoltaic input port reaches the minimum start-up voltage of the auxiliary power supply, the second real-time judgment result indicates that the real-time input voltage of the photovoltaic input port reaches the minimum start-up voltage of the photovoltaic input port, and the minimum start-up voltage of the photovoltaic input port is greater than the minimum start-up voltage of the auxiliary power supply; The state control module is used to control the Buck-Boost lower bridge arm unit to intermittently generate waves to realize power-off of the auxiliary power supply when the real-time judgment result is the first real-time judgment result.

4. An electronic device, characterized in that: include: at least one processor; at least one memory for storing at least one program; When at least one of the programs is executed by at least one of the processors, the auxiliary power supply power-off control method of the bidirectional inverter as claimed in claim 1 or 2 is implemented.

5. A computer-readable storage medium, characterized in that: A program executable by a processor is stored therein, and when the program executable by the processor is executed by the processor, it is used to implement the auxiliary power supply power-off control method of the bidirectional inverter as claimed in claim 1 or 2.

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