Power supply circuit and control method thereof, air conditioner and computer readable storage medium

Abstract

The invention provides a power supply circuit and a control method thereof, an air conditioner and a computer readable storage medium, the power supply circuit comprises a rectification module, a first branch circuit and an inversion branch circuit, and the input side of the rectification module is used for being connected to an alternating current power supply; the first branch circuit and the inversion branch circuit are both arranged on the output side of the rectification module, the first branch circuit is provided with a first capacitor and a suppression module which are connected, the first capacitor is used for absorbing surge, and the suppression module is used for suppressing impact current flowing through the first capacitor; the inversion branch is provided with an inversion module, and the output side of the inversion module is used for being connected to a load. According to the embodiment of the invention, the suppression module is mounted in the first branch, so that the impact current flowing through the first capacitor can be suppressed, and only a small-specification suppression module needs to be adopted as the load current of the first branch is small, so that the production cost and the occupied space of the circuit board can be reduced.

Description

Technical Field

[0001] The present application relates to the technical field of electronic circuits, and in particular to a power supply circuit and a control method thereof, an air conditioner and a computer-readable storage medium. Background Art

[0002] In the related art, in order to avoid surge hazards, existing electronic circuits are often equipped with electrolytic capacitors for absorbing surges. At the same time, in order to reduce the impact current of the electrolytic capacitor when power is turned on, devices for suppressing impact current are usually installed on the main circuit. However, since there is a large current flowing in the main circuit, these devices often need to be large in size, which will result in high cost of the circuit board and occupy a large space. Summary of the invention

[0003] The present application aims to solve at least one of the technical problems existing in the prior art. To this end, the present application proposes a power supply circuit and a control method thereof, an air conditioner and a computer-readable storage medium, aiming to reduce the production cost and occupied space of a circuit board.

[0004] In a first aspect, an embodiment of the present application provides a power supply circuit, including:

[0005] A rectifier module, the input side of which is used to connect to an AC power source;

[0006] A first branch is provided at the output side of the rectifier module, the first branch is provided with a first capacitor and a suppression module, the first capacitor and the suppression module are connected, the first capacitor is used to absorb surges, and the suppression module is used to suppress an impact current flowing through the first capacitor;

[0007] The inverter branch is arranged at the output side of the rectifier module. The inverter branch is provided with an inverter module. The output side of the inverter module is used to connect to a load.

[0008] According to some embodiments of the present application, the suppression module includes a resistor and a first switch device, the resistor is connected in series with the first capacitor, and the first switch device is connected in parallel with the resistor.

[0009] According to some embodiments of the present application, the first switching device is a relay.

[0010] According to some embodiments of the present application, the first branch is further provided with a control module, a power supply side of the control module is connected in parallel with the first capacitor, and a control side of the control module is connected to the first switching device and / or the inverter branch.

[0011] According to some embodiments of the present application, the first capacitor is an electrolytic capacitor.

[0012] According to some embodiments of the present application, the power supply circuit further includes a second branch, the second branch is arranged at the output side of the rectifier module, and the second branch is provided with a second capacitor for absorbing ripple current.

[0013] According to some embodiments of the present application, the second capacitor is a thin film capacitor.

[0014] According to some embodiments of the present application, the power supply circuit further includes a third branch, the third branch is arranged at the output side of the rectifier module, and the third branch is provided with a third capacitor for filtering.

[0015] According to some embodiments of the present application, the power supply circuit further includes a fourth capacitor, which is disposed on the input side of the rectifier module, and both ends of the fourth capacitor are used to be connected to an AC power supply.

[0016] According to some embodiments of the present application, the power supply circuit further includes an inductor, one end of the inductor is used to be connected to an AC power supply, and the other end of the inductor is connected to an input side of the rectifier module.

[0017] According to some embodiments of the present application, the power supply circuit further includes a second switching device, one end of which is used to be connected to an AC power supply, and the other end of which is connected to an input side of the rectifier module.

[0018] In a second aspect, an embodiment of the present application provides a control method for a power supply circuit, which is applied to the power supply circuit of the first aspect above, and the control method includes:

[0019] Closing the second switch device so that the AC power source charges the first capacitor through the rectifier module and the first branch, and obtaining a charging parameter of the first capacitor;

[0020] When the charging parameter meets a preset condition, the first switch device is controlled to be turned on.

[0021] According to some embodiments of the present application, when the charging parameter meets a preset condition, controlling the first switching device to turn on includes one of the following:

[0022] When the stored electricity of the first capacitor is greater than or equal to the preset electricity, controlling the first switch device to turn on;

[0023] When the charging time of the first capacitor is greater than or equal to a preset time, the first switch device is controlled to be turned on.

[0024] In a third aspect, an embodiment of the present application provides a power supply circuit, comprising: a memory, a processor, and a computer program stored in the memory and executable on the processor, wherein the processor executes the control method described in the second aspect above when running the computer program.

[0025] In a fourth aspect, an embodiment of the present application provides an air conditioner, comprising the power supply circuit of the first aspect or the third aspect mentioned above.

[0026] In a fifth aspect, an embodiment of the present application provides a computer-readable storage medium storing computer-executable instructions, wherein the computer-executable instructions are used to execute the control method as described in the second aspect above.

[0027] According to the technical solution of the embodiment of the present application, it includes but is not limited to the following technical effects: the power supply circuit of the embodiment of the present application includes a rectifier module, a first branch and an inverter branch, wherein the input side of the rectifier module is used to connect to an AC power supply; the first branch and the inverter branch are both arranged on the output side of the rectifier module, the first branch is provided with a first capacitor and a suppression module connected thereto, the first capacitor is used to absorb surges, and the suppression module is used to suppress the impact current flowing through the first capacitor; the inverter branch is provided with an inverter module, and the output side of the inverter module is used to connect to a load. Since the embodiment of the present application installs the suppression module in the first branch, it can not only suppress the impact current flowing through the first capacitor, but also because the load current of the first branch is small, only a small-sized suppression module is needed, thereby reducing the production cost and occupied space of the circuit board.

[0028] Additional aspects and advantages of the present application will be given in part in the description below, and in part will become apparent from the description below, or will be learned through the practice of the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] The accompanying drawings are used to provide further understanding of the technical solution of the present application and constitute a part of the specification. Together with the embodiments of the present application, they are used to explain the technical solution of the present application and do not constitute a limitation on the technical solution of the present application.

[0030] Figure 1 is a schematic diagram of the structure of a power supply circuit provided by an embodiment of the present application;

[0031] Figure 2 is a flow chart of a control method for a power supply circuit provided by an embodiment of the present application;

[0032] Figure 3 is a flow chart of a method for controlling a power supply circuit provided by another embodiment of the present application;

[0033] Figure 4is a flow chart of a method for controlling a power supply circuit provided by another embodiment of the present application;

[0034] Figure 5 It is a structural diagram of a controller for executing a control method for a power supply circuit provided in one embodiment of the present application. DETAILED DESCRIPTION

[0035] The embodiments of the present application are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present application, and cannot be understood as limiting the present application.

[0036] In the description of the present application, it should be understood that descriptions involving orientation, such as up, down, front, back, left, right, etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present application.

[0037] In the description of this application, "several" means one or more, "more" means more than two, "greater than", "less than", "exceed", etc. are understood to exclude the number itself, and "above", "below", "within", etc. are understood to include the number itself. If there is a description of "first" or "second", it is only used for the purpose of distinguishing technical features, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features or implicitly indicating the order of the indicated technical features.

[0038] In the description of this application, unless otherwise clearly defined, terms such as setting, installing, connecting, etc. should be understood in a broad sense, and technicians in the relevant technical field can reasonably determine the specific meanings of the above terms in this application based on the specific content of the technical solution.

[0039] In some cases, in order to avoid surge hazards, existing electronic circuits are often equipped with electrolytic capacitors for absorbing surges. At the same time, in order to reduce the impact current of the electrolytic capacitor when power is turned on, devices for suppressing impact current are usually installed on the main circuit. However, since a large current flows in the main circuit, these devices often need to be large in size, which will result in high cost of the circuit board and occupy a large space.

[0040] Based on the above situation, the embodiments of the present application propose a power supply circuit and a control method thereof, an air conditioner and a computer-readable storage medium, aiming to reduce the production cost and occupied space of the circuit board.

[0041] Various embodiments of the power supply circuit of the present application are further described below in conjunction with the accompanying drawings.

[0042] like Figure 1 As shown, Figure 1 1 is a schematic diagram of a power supply circuit according to an embodiment of the present application. The power supply circuit according to the embodiment of the present application includes but is not limited to a rectifier module 100, a first branch 210 and an inverter branch 240. Specifically, the input side of the rectifier module 100 is connected to an AC power source 300, and the output side of the rectifier module 100 is connected to the first branch 210 and the inverter branch 240.

[0043] In one embodiment, the first branch 210 is provided with at least a suppression module 211 and a first capacitor C1, and the suppression module 211 is connected to the first capacitor C1, wherein at least one function of the first capacitor C1 is to absorb surges, and at least one function of the suppression module 211 is to reduce the impact current of the electrolytic capacitor during power-on, that is, to suppress the impact current flowing through the first capacitor C1.

[0044] In one embodiment, the inverter branch 240 is at least provided with an inverter module 241 , wherein the output side of the inverter module 241 is connected to the output side of the rectifier module 100 , and the output side of the inverter module 241 is used to connect to the load 400 .

[0045] Since the suppression module 211 is installed in the first branch 210 in the embodiment of the present application, it can not only suppress the impact current flowing through the first capacitor C1, but also because the load 400 current of the first branch 210 is small, only a small-sized suppression module 211 is required, thereby reducing the production cost and occupied space of the circuit board.

[0046] It should be noted that the above-mentioned rectifier module 100 can convert AC power into DC power, thereby playing a role of rectification. Specifically, the input side of the rectifier module 100 is provided with an AC input terminal, and the output side is provided with a DC output terminal. The rectifier module 100 can receive AC power from the AC power source 300 through the AC input terminal, obtain DC power after rectification, and supply the DC power to the first branch 210 and the inverter branch 240 through the DC output terminal.

[0047] It is understandable that the above-mentioned rectifier module 100 can be as follows Figure 1 The rectifier bridge composed of multiple diodes shown in the figure may also be of other structural forms. The embodiment of the present application does not specifically limit the structure of the rectifier module 100.

[0048] In addition, it should be noted that the first capacitor C1 mentioned above can be an electrolytic capacitor. Among them, electrolytic capacitors usually use metal foil as the positive electrode, and the insulating oxide layer of the metal foil as the dielectric. Electrolytic capacitors are divided into aluminum electrolytic capacitors and tantalum electrolytic capacitors according to their positive electrodes. The negative electrode of the aluminum electrolytic capacitor is composed of thin paper / film or electrolyte polymer immersed in electrolyte; the negative electrode of the tantalum electrolytic capacitor is usually made of manganese dioxide.

[0049] It can be understood that the capacitance value of the first capacitor C1 can be freely set according to actual needs of the circuit, and the embodiment of the present application does not specifically limit the capacitance value of the first capacitor C1.

[0050] In addition, it should be noted that the inverter module 241 can convert direct current into alternating current, thereby playing the role of inversion. Specifically, the input side of the inverter module 241 is provided with a direct current input terminal, and the output side is provided with an alternating current output terminal. The rectifier module 100 can receive direct current from the output side of the rectifier module 100 through the direct current input terminal, obtain alternating current after inversion, and supply the alternating current to the load 400 through the alternating current output terminal.

[0051] It is understandable that the inverter module 241 may be as follows: Figure 1 The bridge circuit composed of multiple switch tubes shown in the figure may also be of other structural forms. The embodiment of the present application does not specifically limit the structure of the inverter module 241.

[0052] It is understandable that the AC power source 300 mentioned above may be a mains power source, or an AC power source obtained through photovoltaic power generation, hydroelectric power generation, or other power generation methods. In addition, the load 400 mentioned above may be a motor, a compressor, or other equipment that requires AC power supply. The embodiment of the present application does not specifically limit the type of the load 400.

[0053] In addition, it should be noted that Figure 1 As shown, since the first branch 210 and the inverter branch 240 are in parallel relationship, the load 400 current of the first branch 210 is smaller than the main current, so only a small-sized suppression module 211 is required, thereby reducing the production cost and occupied space of the circuit board.

[0054] In one embodiment, the suppression module 211 may include but is not limited to a resistor R1 and a first switch device Ry, wherein the first capacitor C1 is connected in series with the resistor R1 , and the resistor R1 is connected in parallel with the first switch device Ry.

[0055] It should be noted that, regarding the resistor R1 in the above-mentioned first branch 210, since the larger the resistance of the first branch 210, the smaller the current of the first branch 210 will be, therefore, at least one function of the resistor R1 in the suppression module 211 is to reduce the impact current flowing through the first capacitor C1 when power is turned on.

[0056] It can be understood that the resistance value of the resistor R1 can be freely set according to the actual needs of the circuit, and the embodiment of the present application does not specifically limit the resistance value of the resistor R1.

[0057] In addition, it should be noted that the first switch device Ry in the first branch 210 is used to be turned on after the first capacitor C1 is sufficiently charged, so that the current does not flow through the resistor R1 but flows through the first switch device Ry, thereby reducing the degree of heat generation and achieving energy saving effect.

[0058] It is understandable that the first switch device Ry mentioned above may be a relay or other device with a switch function, and the embodiment of the present application does not specifically limit the structural type of the first switch device Ry. For example, when the first switch device Ry is a relay, since the load 400 of the first branch 210 has a small current, only a small relay is required, thereby reducing the space of the circuit board, and the cost of the relay itself can also be lower.

[0059] In one embodiment, the first branch 210 is also provided with a control module SWPS, and the control module SWPS is provided with a power supply side and a control side, wherein the control module SWPS is connected in parallel to the first capacitor C1 through the power supply side. In addition, the control module SWPS can be connected to the first switching device Ry through the control side, or, connected to the switch tube in the inverter module 241 in the inverter branch 240 through the control side, or, connected to the first switching device Ry and the switch tube in the inverter module 241 through the control side at the same time.

[0060] Specifically, when the circuit is powered on, the AC power supply 300 will charge the first capacitor C1 through the rectifier module 100 and the first branch 210 in sequence, so that the first capacitor C1 stores a certain amount of electricity. At this time, the electricity of the first capacitor C1 can be supplied to the control module SWPS, so that the control module SWPS can work, then the control module SWPS can control the first switching device Ry to turn on or off through the control side, or control the switch tube in the inverter module 241 to turn on or off through the control side.

[0061] In one embodiment, the power supply circuit also includes but is not limited to a second branch 220, wherein the second branch 220 is arranged on the output side of the rectifier module 100, and the second branch 220 is provided with a second capacitor C2, which is used to absorb the ripple current in the circuit, wherein the ripple current may include the ripple current of the inverter module 241.

[0062] It should be noted that the second capacitor C2 mentioned above can be a film capacitor. Specifically, a film capacitor is a capacitor that uses metal foil as an electrode, overlaps it with a plastic film such as polyethylene, polypropylene, polystyrene or polycarbonate from both ends, and is wound into a cylindrical structure. Depending on the type of plastic film, it is called a polyethylene capacitor, a polypropylene capacitor, a polystyrene capacitor and a polycarbonate capacitor.

[0063] It can be understood that the capacitance value of the second capacitor C2 can be freely set according to the actual needs of the circuit, and the embodiment of the present application does not specifically limit the capacitance value of the second capacitor C2.

[0064] In one embodiment, the power supply circuit further includes but is not limited to a third branch 230 . The third branch 230 is disposed at the output side of the rectifier module 100 . The third branch 230 is provided with a third capacitor C3 , and the third capacitor C3 is used for filtering.

[0065] It can be understood that the capacitance value of the third capacitor C3 can be freely set according to the actual needs of the circuit, and the embodiment of the present application does not specifically limit the capacitance value of the third capacitor C3.

[0066] In one embodiment, the power supply circuit further includes but is not limited to a fourth capacitor C4 . The fourth capacitor C4 is disposed at the input side of the rectifier module 100 , and both ends of the fourth capacitor C4 are connected to the AC power source 300 .

[0067] It can be understood that the capacitance value of the fourth capacitor C4 can be freely set according to actual needs of the circuit, and the embodiment of the present application does not specifically limit the capacitance value of the fourth capacitor C4.

[0068] In one embodiment, the power supply circuit further includes but is not limited to an inductor L, one end of the inductor L is connected to the AC power source 300, and the other end is connected to the input side of the rectifier module 100. Specifically, the inductor L is used to adjust the power factor of the circuit.

[0069] In one embodiment, the power supply circuit further includes but is not limited to a second switch device PRy, one end of the second switch device PRy is connected to the AC power source 300 , and the other end is connected to the input side of the rectifier module 100 .

[0070] It can be understood that the above-mentioned second switching device PRy can be a relay or other devices with a switching function. The embodiment of the present application does not specifically limit the structural type of the second switching device PRy.

[0071] It should be noted that when the power supply circuit is applied to an air conditioner, the second switching device PRy can correspond to the second switching device PRy of the indoor unit; when the second switching device PRy is turned on, the circuit board of the indoor unit is powered on, so that the fan can be driven to operate subsequently.

[0072] Based on the overall structure of the power supply circuit of each of the above embodiments, various embodiments of the control method of the power supply circuit of the present application are respectively proposed below.

[0073] like Figure 2 As shown, Figure 2 1 is a flow chart of a control method for a power supply circuit provided by an embodiment of the present application. The control method for a power supply circuit may include but is not limited to step S210 and step S220.

[0074] Step S210: close the second switch device so that the AC power source charges the first capacitor through the rectifier module and the first branch, and obtain the charging parameter of the first capacitor;

[0075] Step S220: When the charging parameter meets the preset condition, the first switch device is controlled to be turned on.

[0076] In one embodiment, when the second switch device is closed and the power supply circuit is powered on, the rectifier module receives the AC power of the AC power supply through the input side, converts it into DC power after rectification, and supplies the DC power to the first branch, thereby charging the first capacitor in the first branch; then, the embodiment of the present application can obtain the charging parameters of the first capacitor in real time. If the charging parameters do not meet the preset conditions, the first switch device is kept disconnected; if the charging parameters meet the preset conditions, the first switch device is controlled to be closed.

[0077] It should be noted that the above-mentioned charging parameters may be the charging amount of the first capacitor, the charging time of the first capacitor, or other parameters that can reflect the charging status of the first capacitor. The embodiment of the present application does not specifically limit the type of charging parameters.

[0078] It is worth noting that since the control method of the power supply circuit of the embodiment of the present application corresponds to the power supply circuit of any of the above-mentioned embodiments, the specific implementation methods and technical effects of the control method of the power supply circuit of the embodiment of the present application can refer to the specific implementation methods and technical effects of the power supply circuit of any of the above-mentioned embodiments.

[0079] It should be noted that the above step S220 may include but is not limited to: Figure 3 or Figure 4 There are two implementation scenarios, as follows:

[0080] like Figure 3 As shown, Figure 3 The flowchart of the control method of the power supply circuit provided by another embodiment of the present application is as follows. Regarding the above-mentioned step S220 in which the first switch device is controlled to be turned on when the charging parameter meets the preset condition, it may include but is not limited to step S310 and step S320.

[0081] Step S310: When the stored power of the first capacitor is greater than or equal to the preset power;

[0082] Step S320, controlling the first switch device to be turned on.

[0083] In one embodiment, after the power supply circuit is powered on, the embodiment of the present application can obtain the stored power of the first capacitor in real time. If the stored power does not reach the preset power, the first switch device is kept disconnected; if the stored power reaches the preset power, the first switch device is controlled to be closed.

[0084] It should be noted that the above-mentioned preset power can be pre-set, and its value can be 100% of the maximum storage power or 90% of the maximum storage power. The embodiment of the present application does not specifically limit the value of the preset power.

[0085] like Figure 4 As shown, Figure 4 The flowchart of the control method of the power supply circuit provided by another embodiment of the present application is as follows. Regarding the above-mentioned step S220 in which the first switch device is controlled to be turned on when the charging parameter meets the preset condition, it may include but is not limited to step S410 and step S420.

[0086] Step S410: when the charging time of the first capacitor is greater than or equal to the preset time;

[0087] Step S420, controlling the first switch device to be turned on.

[0088] In one embodiment, after the power supply circuit is powered on, the embodiment of the present application can obtain the charging time of the first capacitor in real time. If the charging time does not reach the preset time, the first switch device is kept disconnected; if the charging time reaches the preset time, the first switch device is controlled to be closed.

[0089] It should be noted that the above-mentioned preset time can be pre-set, and its value can be 1 minute or 30 seconds. The embodiment of the present application does not specifically limit the value of the preset time.

[0090] Based on the power supply circuit and control method thereof of the above-mentioned various embodiments, various embodiments of the controller, power supply circuit, air conditioner and computer-readable storage medium of the present application are respectively proposed below.

[0091] like Figure 5 As shown, Figure 5 1 is a schematic diagram of a controller for executing a control method for a power supply circuit according to an embodiment of the present application. The controller 500 implemented in the present application includes: a processor 510, a memory 520, and a computer program stored in the memory 520 and executable on the processor 510, wherein: Figure 5 In the figure, a processor 510 and a memory 520 are taken as an example.

[0092] The processor 510 and the memory 520 may be connected via a bus or other means. Figure 5 The example of connecting through bus is taken in the following.

[0093] The memory 520, as a non-transitory computer-readable storage medium, can be used to store non-transitory software programs and non-transitory computer executable programs. In addition, the memory 520 may include a high-speed random access memory, and may also include a non-transitory memory, such as at least one disk storage device, a flash memory device, or other non-transitory solid-state storage device. In some embodiments, the memory 520 may optionally include a memory 520 remotely arranged relative to the processor 510, and these remote memories 520 may be connected to the controller 500 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.

[0094] Those skilled in the art will understand that Figure 5 The device structure shown in the figure does not constitute a limitation on the controller 500, and may include more or less components than shown in the figure, or combine certain components, or arrange the components differently.

[0095] exist Figure 5 In the controller 500 shown, the processor 510 can be used to call the control program of the power supply circuit stored in the memory 520, so as to implement the control method of the power supply circuit described above. Specifically, the non-transient software program and instructions required to implement the control method of the power supply circuit of the above embodiment are stored in the memory 520, and when executed by the processor 510, the control method of the power supply circuit of the above embodiment is executed.

[0096] It is worth noting that since the controller 500 of the embodiment of the present application can execute the control method of the power supply circuit of any of the above-mentioned embodiments, the specific implementation manner and technical effects of the controller 500 of the embodiment of the present application can refer to the specific implementation manner and technical effects of the control method of the power supply circuit of any of the above-mentioned embodiments.

[0097] In addition, an embodiment of the present application further provides a power supply circuit, including the power supply circuit of any of the above embodiments.

[0098] It is worth noting that since the power supply circuit of the embodiment of the present application includes the controller of any of the above-mentioned embodiments, and the controller of the above-mentioned embodiments is capable of executing the control method of the power supply circuit of any of the above-mentioned embodiments, the specific implementation manner and technical effects of the power supply circuit of the embodiment of the present application can refer to the specific implementation manner and technical effects of the power supply circuit of any of the above-mentioned embodiments.

[0099] In addition, an embodiment of the present application further provides an air conditioner, comprising the power supply circuit of any of the above embodiments.

[0100] It is worth noting that since the air conditioner of the embodiment of the present application includes the power supply circuit of the above embodiment, the specific implementation manner and technical effects of the air conditioner of the embodiment of the present application can refer to the specific implementation manner and technical effects of the power supply circuit and its control method of any of the above embodiments.

[0101] In addition, an embodiment of the present application further provides a computer-readable storage medium, which stores computer-executable instructions, and the computer-executable instructions are used to execute the control method of the power supply circuit described above. Figures 2 to 4 The method steps in .

[0102] It is worth noting that since the computer-readable storage medium of the embodiment of the present application can execute the control method of the power supply circuit of any of the above-mentioned embodiments, the specific implementation manner and technical effects of the computer-readable storage medium of the embodiment of the present application can refer to the specific implementation manner and technical effects of the power supply circuit and its control method of any of the above-mentioned embodiments.

[0103] It will be appreciated by those skilled in the art that all or some of the steps and systems in the disclosed method above may be implemented as software, firmware, hardware and appropriate combinations thereof. Some physical components 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 may be implemented as hardware, or may be 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 a non-transitory medium) and a communication medium (or a temporary medium). As known to those skilled 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 technologies, CD-ROM, digital versatile disks (DVD) or other optical disk storage, magnetic cassettes, magnetic tapes, disk storage or other magnetic storage devices, or any other medium that may be used to store desired information and may be accessed by a computer. Furthermore, it is well known to those skilled in the art that communication media typically include 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.

[0104] In the description of the embodiments of the present application, unless otherwise clearly specified and limited, the terms "connection", "direct connection", "indirect connection", "fixed connection", "installation", and "assembly" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; the terms "installation", "connection", and "fixed connection" can be a direct connection, or an indirect connection through an intermediate medium, or the internal connection of two components. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0105] Although the implementation methods disclosed in this application are as above, the contents are only implementation methods adopted to facilitate understanding of this application, and are not intended to limit this application. Any technician in the field to which this application belongs can make any modifications and changes in the form and details of implementation without departing from the spirit and scope disclosed in this application, but the scope of patent protection of this application shall still be defined by the attached claims.

[0106] The above is a specific description of the preferred implementation of the present application, but the present application is not limited to the above implementation mode. Technical personnel familiar with the field can also make various equivalent modifications or substitutions under the shared conditions without violating the spirit of the present application. These equivalent modifications or substitutions are all included in the scope defined by the claims of the present application.

Claims

1. A power supply circuit, characterized in that: include: A rectifier module, the input side of which is used to connect to an AC power source; A first branch is provided at the output side of the rectifier module, the first branch is provided with a first capacitor and a suppression module, the first capacitor and the suppression module are connected, the first capacitor is used to absorb surges, and the suppression module is used to suppress an impact current flowing through the first capacitor; The inverter branch is arranged at the output side of the rectifier module. The inverter branch is provided with an inverter module. The output side of the inverter module is used to connect to a load.

2. The power supply circuit according to claim 1, characterized in that: The suppression module includes a resistor and a first switch device, the resistor is connected in series with the first capacitor, and the first switch device is connected in parallel with the resistor.

3. The power supply circuit according to claim 2, characterized in that: The first branch is further provided with a control module, a power supply side of the control module is connected in parallel with the first capacitor, and a control side of the control module is connected to the first switch device and / or the inverter branch.

4. The power supply circuit according to claim 1, characterized in that: The power supply circuit further includes a second branch, which is arranged at the output side of the rectifier module, and the second branch is provided with a second capacitor for absorbing ripple current.

5. The power supply circuit according to claim 1, characterized in that: The power supply circuit further includes a third branch, which is arranged at the output side of the rectifier module, and the third branch is provided with a third capacitor for filtering.

6. The power supply circuit according to claim 1, characterized in that: The power supply circuit further includes a fourth capacitor, which is disposed at the input side of the rectifier module, and both ends of the fourth capacitor are used to be connected to an AC power source.

7. The power supply circuit according to claim 1, characterized in that: The power supply circuit also includes an inductor, one end of which is used to be connected to an AC power source, and the other end of which is connected to the input side of the rectifier module.

8. The power supply circuit according to claim 2, characterized in that: The power supply circuit also includes a second switch device, one end of which is used to be connected to an AC power source, and the other end of which is connected to an input side of the rectifier module.

9. A method for controlling a power supply circuit, characterized in that: Applied to the power supply circuit according to claim 8, the control method comprises: Closing the second switch device so that the AC power source charges the first capacitor through the rectifier module and the first branch, and obtaining a charging parameter of the first capacitor; When the charging parameter meets a preset condition, the first switch device is controlled to be turned on.

10. The control method according to claim 9, characterized in that: When the charging parameter meets a preset condition, controlling the first switch device to turn on includes one of the following: When the stored electricity of the first capacitor is greater than or equal to the preset electricity, controlling the first switch device to turn on; When the charging time of the first capacitor is greater than or equal to a preset time, the first switch device is controlled to be turned on.

11. A power supply circuit, characterized in that: include: A memory, a processor, and a computer program stored in the memory and executable on the processor, wherein the processor executes the control method according to claim 9 or 10 when executing the computer program.

12. An air conditioner, characterized in that: The method comprises the power supply circuit according to any one of claims 1 to 8 or the power supply circuit according to claim 11.

13. A computer-readable storage medium, characterized in that: Computer executable instructions are stored, and the computer executable instructions are used to execute the control method according to claim 9 or 10.

Images