Control method and system of air conditioner power supply circuit and air conditioner power supply circuit

Abstract

The invention provides a control method and system of an air conditioner power supply circuit and the air conditioner power supply circuit, and the air conditioner power supply circuit comprises a voltage stabilization output end comprising a first dummy load circuit, a first non-voltage stabilization output end comprising a second dummy load circuit, and a second non-voltage stabilization output end comprising a third dummy load circuit. The first dummy load circuit, the second dummy load circuit and the third dummy load circuit at least comprise resistors. The method comprises the following steps: acquiring the number of pulses of power supply voltage of a first non-stabilized voltage output end in a preset time period; when the number of the pulses is greater than or equal to a preset threshold value and the first dummy load circuit is turned on, the resistance value of the first dummy load circuit is increased; and under the condition that the number of the pulses is smaller than a preset threshold value, the resistance value of the first dummy load circuit, the resistance value of the second dummy load circuit and the resistance value of the third dummy load circuit are adjusted according to whether the first dummy load circuit of the voltage stabilization output end is turned on or not. The problem that the air conditioner power supply voltage is prone to fluctuation is solved.

Description

Technical Field

[0001] The present application relates to the field of electrical engineering technology, and in particular to a control method for an air-conditioning power circuit, an air-conditioning power circuit, a computer-readable storage medium, and a control system for the air-conditioning power circuit. Background Art

[0002] With the development of electronic technology and the diversification of product demand, single-ended flyback switching power supplies with multiple outputs have been widely used in the household appliance industry. In related technologies, switching power supplies with multiple outputs often use the voltage of an output loop for voltage regulation control, that is, the feedback signal of the feedback loop only comes from one output loop, thereby achieving a regulated output at the regulated output end, while other non-regulated output ends are affected by the cross-regulation rate, and the voltage is relatively unstable. In order to avoid large fluctuations in the voltage at the non-regulated output end due to the mismatch between the output capacity and the actual demand, a suitable dummy load is usually added to the output end. In the design of the dummy load, if the load current is designed to be too small, the voltage regulation capability of the non-regulated output end will be reduced. If the load current is designed to be too large, it will lead to high standby power consumption.

[0003] The DC power supply in household air conditioners is generally provided by a single-ended flyback switching power supply, with a regulated output terminal for voltage feedback and multiple unregulated output terminals. In some special cases, the power demand of the regulated output terminal is small, and the power demand of the unregulated output terminal is large. At this time, the output voltage of the unregulated output terminal will oscillate and drop. If the voltage drops seriously, it will affect the stability of the control circuit. A common practice is to set a fixed dummy load resistor at the regulated output terminal to increase the power demand, but this is inflexible and cannot be adjusted and will increase standby power consumption.

[0004] To address this pain point, a flexibly adjustable dummy load solution needs to be proposed to adapt to different situations. Summary of the invention

[0005] The main purpose of the present application is to provide a control method for an air-conditioning power circuit, an air-conditioning power circuit, a computer-readable storage medium and a control system for an air-conditioning power circuit, so as to at least solve the problem that the air-conditioning power voltage is prone to fluctuation in the prior art.

[0006] To achieve the above-mentioned purpose, according to one aspect of the present application, a control method for an air conditioner power supply circuit is provided, wherein the air conditioner power supply circuit comprises a voltage-regulated output terminal, a first non-regulated output terminal and a second non-regulated output terminal, the voltage-regulated output terminal comprises a first dummy load circuit, the first non-regulated output terminal comprises a second dummy load circuit, the second non-regulated output terminal comprises a third dummy load circuit, the first dummy load circuit, the second dummy load circuit and the third dummy load circuit comprise at least a resistor, and the method comprises: an acquisition step, obtaining the number of pulses of the power supply voltage of the first non-regulated output terminal within a preset time period; an increase step, when the number of pulses is greater than or equal to a preset threshold and the first dummy load circuit is turned on, increasing the resistance value of the first dummy load circuit; an adjustment step, when the number of pulses is less than the preset threshold, adjusting the resistance value of the first dummy load circuit, the resistance value of the second dummy load circuit and the resistance value of the third dummy load circuit according to whether the first dummy load circuit of the voltage-regulated output terminal is turned on; obtaining the number of pulses of the power supply voltage of the second non-regulated output terminal, and sequentially performing the acquisition step, the increase step and the adjustment step.

[0007] Optionally, according to whether the first dummy load circuit of the regulated output end is turned on, the resistance value of the first dummy load circuit, the resistance value of the second dummy load circuit and the resistance value of the third dummy load circuit are adjusted, including: when the first dummy load circuit is turned on, obtaining the voltage of the first non-regulated output end to obtain a first voltage, obtaining the voltage of the second non-regulated output end to obtain a second voltage; when the first voltage is greater than a preset voltage threshold and the second voltage is greater than the preset voltage threshold, turning off the first dummy load circuit or reducing the resistance value of the first dummy load circuit.

[0008] Optionally, after obtaining the voltage of the first unregulated output terminal to obtain the first voltage, obtaining the voltage of the second unregulated output terminal to obtain the second voltage, the method further includes: when the first voltage is greater than the preset voltage threshold or the second voltage is greater than the preset voltage threshold, increasing the resistance value of the second dummy load circuit or increasing the resistance value of the third dummy load circuit.

[0009] Optionally, adjusting the resistance value of the first dummy load circuit, the resistance value of the second dummy load circuit and the resistance value of the third dummy load circuit according to whether the first dummy load circuit of the voltage regulated output end is turned on, also includes: when the first dummy load circuit is not turned on, turning off the second dummy load circuit and the third dummy load circuit.

[0010] Optionally, the method further includes: when the number of pulses is greater than or equal to a preset threshold and the first dummy load circuit is not turned on, turning on the first dummy load circuit.

[0011] Optionally, the unregulated voltage output terminal includes a first unregulated voltage output terminal and a second unregulated voltage output terminal, the first unregulated voltage output terminal includes a second dummy load circuit, and the second unregulated voltage output terminal includes a third dummy load circuit, and the method further includes: obtaining the number of pulses of the power supply voltage of the first unregulated voltage output terminal within the preset time period, and sequentially executing the increasing step and the adjusting step; obtaining the number of pulses of the power supply voltage of the second unregulated voltage output terminal within the preset time period, and sequentially executing the increasing step and the adjusting step.

[0012] In order to achieve the above-mentioned purpose, according to one aspect of the present application, an air conditioner power supply circuit is provided, including: a voltage-regulated output end, at least including a first dummy load circuit, used to adjust the load of the voltage-regulated output end; a first unregulated output end, at least including a second dummy load circuit and a first voltage oscillation detection circuit, the second dummy load circuit is used to adjust the load of the first unregulated output end, and the first voltage oscillation detection circuit is used to detect the number of pulses of the power supply voltage of the first unregulated output end; a second unregulated output end, at least including a third dummy load circuit and a second voltage oscillation detection circuit, the third dummy load circuit is used to adjust the load of the second unregulated output end, and the second voltage oscillation detection circuit is used to detect the number of pulses of the power supply voltage of the second unregulated output end.

[0013] Optionally, the first dummy load circuit, the second dummy load circuit and the third dummy load circuit are each composed of a plurality of parallel circuits, and each of the parallel circuits is composed of a resistor and a transistor connected in series.

[0014] According to another aspect of the present application, a computer-readable storage medium is provided, the computer-readable storage medium including a stored program, wherein when the program is executed, the device where the computer-readable storage medium is located is controlled to execute any one of the above-mentioned methods for controlling an air-conditioning power supply circuit.

[0015] According to another aspect of the present application, a control system for an air-conditioning power supply circuit is provided, comprising: an air-conditioning power supply circuit, comprising a regulated output terminal, a first unregulated output terminal, and a second unregulated output terminal; one or more processors, a memory, and one or more programs, wherein the one or more programs are stored in the memory and are configured to be executed by the one or more processors, and the one or more programs include a control method for executing any one of the above-mentioned air-conditioning power supply circuits.

[0016] Applying the technical solution of the present application, the air conditioner power supply circuit includes a voltage-regulated output terminal, a first non-regulated output terminal and a second non-regulated output terminal, the voltage-regulated output terminal includes a first dummy load circuit, the first non-regulated output terminal includes a second dummy load circuit, the second non-regulated output terminal includes a third dummy load circuit, the first dummy load circuit, the second dummy load circuit and the third dummy load circuit include at least a resistor, including: an acquisition step, acquiring the number of pulses of the power supply voltage of the first non-regulated output terminal within a preset time period; an increase step, when the number of pulses is greater than or equal to a preset threshold and the first dummy load circuit is turned on, increasing the resistance value of the first dummy load circuit; an adjustment step, when the number of pulses is less than the preset threshold, adjusting the resistance value of the first dummy load circuit, the resistance value of the second dummy load circuit and the resistance value of the third dummy load circuit according to whether the first dummy load circuit of the voltage-regulated output terminal is turned on; acquiring the number of pulses of the power supply voltage of the second non-regulated output terminal, and sequentially performing the acquisition step, the increase step and the adjustment step. In this way, by setting up a dummy load circuit, the load power requirement of the air conditioner power supply circuit is adjusted, and by detecting the number of pulses of the power supply voltage at the unregulated output end, the resistance value of the dummy load circuit is adjusted to adjust the air conditioner load power, thereby making the power supply voltage more stable. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The drawings constituting part of the present application are used to provide a further understanding of the present application. The exemplary embodiments and descriptions of the present application are used to explain the present application and do not constitute an improper limitation on the present application. In the drawings:

[0018] Figure 1 is a flow chart of a control method of an air conditioner power circuit according to an embodiment of the present application;

[0019] Figure 2 is a structural schematic diagram of an air-conditioning power supply circuit provided according to an embodiment of the present application;

[0020] Figure 3 is a flow chart of the operation of the air conditioner power supply circuit according to an embodiment of the present application;

[0021] Figure 4 It is a structural schematic diagram of a dummy load circuit and a voltage oscillation detection circuit provided according to an embodiment of the present application;

[0022] Figure 5 is a flow chart of the dummy load control logic according to an embodiment of the present application. DETAILED DESCRIPTION

[0023] It should be noted that, in the absence of conflict, the embodiments and features in the embodiments of the present application can be combined with each other. The present application will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0024] In order to enable those skilled in the art to better understand the solution of the present application, the technical solution in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work should fall within the scope of protection of the present application.

[0025] It should be noted that the terms "first", "second", etc. in the specification and claims of the present application and the above-mentioned drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequential order. It should be understood that the data used in this way can be interchanged where appropriate, so that the embodiments of the present application described here. In addition, the terms "including" and "having" and any of their variations are intended to cover non-exclusive inclusions, for example, a process, method, system, product or device comprising a series of steps or units is not necessarily limited to those steps or units clearly listed, but may include other steps or units that are not clearly listed or inherent to these processes, methods, products or devices.

[0026] As introduced in the background technology, in the prior art, a switching power supply with multiple outputs often uses the voltage of an output loop for voltage regulation control, that is, the feedback signal of the feedback loop is derived from only one output loop, thereby achieving a regulated output at the regulated output end, while other non-regulated output ends are affected by the cross-regulation rate, and the voltage is relatively unstable. In order to avoid large fluctuations in the voltage at the non-regulated output end due to the mismatch between the output capacity and the actual demand, a suitable dummy load is usually added to the output end. In the design of the dummy load, if the load current is designed to be too small, the voltage regulation capability of the non-regulated output end will be reduced. If the load current is designed to be too large, the standby power consumption will be large. In order to solve the problem that the air conditioner power supply voltage is prone to fluctuations, the embodiments of the present application provide a control method for an air conditioner power supply circuit, an air conditioner power supply circuit, a computer-readable storage medium, and a control system for an air conditioner power supply circuit.

[0027] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the accompanying drawings in the embodiments of the present invention.

[0028] In this embodiment, a control method for an air conditioning power circuit running on a mobile terminal, a computer terminal or a similar computing device is provided. It should be noted that the steps shown in the flowchart of the accompanying drawings can be executed in a computer system such as a set of computer executable instructions, and although a logical order is shown in the flowchart, in some cases, the steps shown or described can be executed in an order different from that shown here.

[0029] Figure 1FIG. 1 is a flow chart of a control method of an air conditioner power circuit according to an embodiment of the present application. Figure 1 As shown, the air conditioner power supply circuit includes a voltage-regulated output terminal, a first non-regulated output terminal, and a second non-regulated output terminal, the voltage-regulated output terminal includes a first dummy load circuit, the first non-regulated output terminal includes a second dummy load circuit, the second non-regulated output terminal includes a third dummy load circuit, the first dummy load circuit, the second dummy load circuit, and the third dummy load circuit include at least a resistor, and the method includes the following steps:

[0030] Step S201, an acquisition step, acquiring the number of pulses of the power supply voltage of the first unregulated output terminal within a preset time period;

[0031] Specifically, by obtaining the number of pulses of the non-regulated output power supply voltage within a preset time period, it can be used to monitor the stability and working status of the circuit. By counting the number of pulses of the non-regulated output power supply voltage, it is possible to determine whether there is an abnormality in the circuit, and to promptly discover the fault and take measures to repair it, thereby avoiding damage to the air-conditioning system or the occurrence of dangerous situations, thereby improving the stability and reliability of the air-conditioning power supply circuit, ensuring the normal operation of the air-conditioning system, extending the service life of the equipment, and reducing maintenance and replacement costs. By monitoring the number of pulses, it is also possible to provide early warning of possible faults, perform maintenance in a timely manner, and ensure user safety and comfort.

[0032] Step S202, an increasing step, when the number of pulses is greater than or equal to a preset threshold and the first dummy load circuit is turned on, increasing the resistance value of the first dummy load circuit.

[0033] Specifically, increasing the resistance value of the first dummy load circuit can effectively reduce the number of pulses in the circuit, thereby reducing power consumption and heat generation, and improving the efficiency and stability of the circuit. By increasing the resistance value, the output power of the circuit can be effectively adjusted to make it more in line with actual needs and extend the service life of the circuit. Increasing the resistance value of the first dummy load circuit can also reduce the noise and interference of the circuit, improve the anti-interference ability of the circuit, and ensure the stable operation of the air-conditioning system.

[0034] Step S203, an adjustment step, when the number of pulses is less than a preset threshold, adjusting the resistance value of the first dummy load circuit and the resistance value of the second dummy load circuit and the resistance value of the third dummy load circuit according to whether the first dummy load circuit at the voltage stabilization output end is turned on;

[0035] Specifically, by dynamically adjusting the resistance values ​​of the first dummy load circuit and the second dummy load circuit, the output power of the air-conditioning power supply can be effectively controlled, so that the air-conditioning power supply can maintain high-efficiency operation under different load conditions, thereby achieving energy saving effects. By adjusting the resistance value according to the situation where the number of pulses is less than a preset threshold, the air-conditioning power supply can still maintain a stable output voltage and current under the condition of large load fluctuations, thereby improving the stability and reliability of the power supply and extending its life: by dynamically adjusting the resistance value, the working pressure of the internal components of the air-conditioning power supply can be reduced, the temperature rise and loss of the components can be reduced, thereby extending the service life of the air-conditioning power supply;

[0036] Step S204, obtaining the number of pulses of the power supply voltage at the second unregulated output terminal, and sequentially performing the obtaining step, the increasing step and the adjusting step.

[0037] Specifically, the control process of the second unregulated voltage output terminal is the same as the control process of the first unregulated voltage output terminal, and the above three steps are performed in sequence.

[0038] Through this embodiment, the air conditioner power supply circuit includes a voltage-regulated output terminal, a first non-regulated output terminal and a second non-regulated output terminal, the voltage-regulated output terminal includes a first dummy load circuit, the first non-regulated output terminal includes a second dummy load circuit, the second non-regulated output terminal includes a third dummy load circuit, the first dummy load circuit, the second dummy load circuit and the third dummy load circuit include at least a resistor, including: an acquisition step, acquiring the number of pulses of the power supply voltage of the first non-regulated output terminal within a preset time period; an increase step, when the number of pulses is greater than or equal to a preset threshold and the first dummy load circuit is turned on, increasing the resistance value of the first dummy load circuit; an adjustment step, when the number of pulses is less than the preset threshold, adjusting the resistance value of the first dummy load circuit, the resistance value of the second dummy load circuit and the resistance value of the third dummy load circuit according to whether the first dummy load circuit of the voltage-regulated output terminal is turned on; acquiring the number of pulses of the power supply voltage of the second non-regulated output terminal, and sequentially performing the acquisition step, the increase step and the adjustment step. In this way, by setting up a dummy load circuit, the load power requirement of the air conditioner power supply circuit is adjusted, and by detecting the number of pulses of the power supply voltage at the unregulated output end, the resistance value of the dummy load circuit is adjusted to adjust the air conditioner load power, thereby making the power supply voltage more stable.

[0039] In some embodiments, according to whether the first dummy load circuit of the regulated output end is turned on, the resistance value of the first dummy load circuit, the resistance value of the second dummy load circuit, and the resistance value of the third dummy load circuit are adjusted, which can be specifically achieved through the following steps: when the first dummy load circuit is turned on, the voltage of the first non-regulated output end is obtained to obtain a first voltage, and the voltage of the second non-regulated output end is obtained to obtain a second voltage; when the first voltage is greater than a preset voltage threshold and the second voltage is greater than a preset voltage threshold, the first dummy load circuit is turned off or the resistance value of the first dummy load circuit is reduced.

[0040] In this scheme, by monitoring the voltage conditions of the first non-regulated output terminal and the second non-regulated output terminal and judging whether it is necessary to adjust the resistance value of the first dummy load circuit according to a preset voltage threshold, the output stability of the circuit can be effectively controlled. When the first voltage and the second voltage are both higher than the preset voltage threshold, the resistance value of the first dummy load circuit is turned off or reduced. This can make the circuit more stable during operation, avoid abnormal operation or damage of the equipment due to voltage fluctuations, improve the stability and reliability of the air conditioner power supply circuit, and ensure the normal operation of the equipment.

[0041] In the specific implementation process, after obtaining the voltage of the first non-regulated output terminal to obtain the first voltage, obtaining the voltage of the second non-regulated output terminal to obtain the second voltage, the above method also includes the following steps: when the first voltage is greater than a preset voltage threshold or the second voltage is greater than a preset voltage threshold, increasing the resistance value of the second dummy load circuit or increasing the resistance value of the third dummy load circuit.

[0042] In this scheme, it can be ensured that when the voltage exceeds the preset threshold, the resistance value of the dummy load circuit is appropriately increased, thereby effectively controlling the output voltage of the circuit, protecting other components in the circuit from damage, improving the stability and reliability of the air-conditioning power supply circuit, ensuring the normal operation of the circuit and extending its service life. By adjusting the resistance value of the dummy load circuit according to actual conditions, it can better adapt to the circuit working state under different working environments and load conditions, and improve the applicability and flexibility of the circuit.

[0043] In some embodiments, the resistance values ​​of the first dummy load circuit, the second dummy load circuit, and the third dummy load circuit are adjusted according to whether the first dummy load circuit at the voltage stabilization output end is turned on. This can be specifically achieved by the following steps: when the first dummy load circuit is not turned on, the second dummy load circuit and the third dummy load circuit are turned off.

[0044] In this scheme, by controlling the opening of the first dummy load circuit, the resistance value of the non-regulated output end can be adjusted, so that the output power of the circuit can be dynamically adjusted during actual use, and the parameters such as the temperature and wind speed of the air conditioner can be controlled. By closing the first, second and third dummy load circuits, energy can be effectively saved and the service life of the electrical appliance can be extended. Closing the above-mentioned load circuits can reduce power consumption, reduce wear and tear on electrical appliances, and also reduce the impact on the environment. By controlling the switch of the load circuit, the use of electricity can be more effectively managed, the energy utilization rate can be improved, and energy waste can be reduced. It can also reduce the current flow in the circuit, reduce the possibility of circuit failure, and improve the stability and safety of the circuit.

[0045] In a specific implementation process, the above method further includes the following steps: when the number of pulses is greater than or equal to a preset threshold and the first dummy load circuit is not turned on, turning on the first dummy load circuit.

[0046] In this scheme, when the number of pulses is greater than or equal to the preset threshold, it indicates that the load is large. At this time, turning on the first dummy load circuit can effectively improve the load capacity of the corresponding non-regulated output terminal, avoid the occurrence of overload, and protect the safe operation of the circuit and equipment. By realizing this function through the control method, the intelligence and automation of the air-conditioning power supply circuit can be improved, better meet user needs, and improve the performance and reliability of the air-conditioning power supply circuit.

[0047] In the specific implementation process, the unregulated voltage output terminal includes a first unregulated voltage output terminal and a second unregulated voltage output terminal, the first unregulated voltage output terminal includes a second dummy load circuit, and the second unregulated voltage output terminal includes a third dummy load circuit. The above method also includes the following steps: obtaining the number of pulses of the power supply voltage of the first unregulated voltage output terminal within a preset time period, and sequentially executing an increase step and an adjustment step; obtaining the number of pulses of the power supply voltage of the second unregulated voltage output terminal within a preset time period, and sequentially executing an increase step and an adjustment step.

[0048] In this scheme, by monitoring and adjusting the number of pulses of the power supply voltage at the non-regulated output end, the output stability of the air-conditioning power supply circuit can be controlled, thereby improving the efficiency and performance of the air-conditioning system. By increasing and adjusting the steps, problems with the non-regulated output end can be discovered and solved in a timely manner to ensure the normal operation of the circuit. By monitoring and adjusting the number of pulses of the power supply voltage at the second non-regulated output end, the air-conditioning system can be effectively protected from voltage fluctuations or other external factors, thereby improving the stability and reliability of the system.

[0049] As can be seen from the above, in the embodiment of the present application, a dummy load control method and control circuit of a single-ended flyback switching power supply are proposed, which can realize real-time monitoring of the voltage of the non-regulated output terminal, flexibly adjust the dummy load of each output terminal, prevent the voltage of the non-regulated output terminal from being too low or too high, and can reduce the standby power consumption compared with the existing fixed dummy load scheme; the oscillation of each non-regulated output terminal is detected by a voltage oscillation detection circuit, and the number of pulses is counted within a certain period of time, so as to indirectly judge the power demand of the non-regulated output terminal and judge whether the dummy load needs to be adjusted; the dummy load control is divided into main control and auxiliary control, the main control is to adjust the dummy load of the regulated output terminal and the power demand of the switching power supply, and the auxiliary control is to adjust the dummy load of the non-regulated terminal. The main control adjusts the overall output, and the auxiliary control is required to make detailed adjustments to the individual output terminals. If the dummy load needs to be adjusted, the main adjustment is performed first, and the voltage value of the non-regulated output terminal is adjusted to be greater than or equal to the low voltage threshold. At this time, if the voltage value is greater than the overvoltage threshold, the auxiliary adjustment is performed.

[0050] At the same time, the technical solution provided by the above embodiments of the present application has the following beneficial effects: it can flexibly adjust the power of the dummy load and optimize the standby power consumption performance of the circuit; it can monitor and adjust the non-regulated output voltage in real time and reduce the cross-regulation rate of the switching power supply.

[0051] That is, the above technical solution provided in the embodiment of the present application takes various factors into comprehensive consideration. By counting the number of voltage oscillations, it is possible to determine whether the power demand of the non-regulated output terminal matches the actual power. By adopting a digital control method, the power consumption of the dummy load can be actively adjusted to make it accurate and efficient. By adopting a segmented control method, each dummy load can be coordinated and adjusted to achieve effective voltage regulation within a certain power range, thereby reducing the cross-regulation rate.

[0052] The embodiment of the present application also provides an air conditioner power supply circuit. It should be noted that the air conditioner power supply circuit of the embodiment of the present application can be used to execute the control method for the air conditioner power supply circuit provided in the embodiment of the present application. The circuit is used to implement the above-mentioned embodiment and preferred implementation mode, and the description has been made no further.

[0053] The following is an introduction to the air conditioner power supply circuit provided in the embodiment of the present application.

[0054] Figure 2 Schematic diagram of the structure of the air conditioner power supply circuit according to the embodiment of the present application. Figure 2 As shown, the circuit includes:

[0055] The voltage-stabilized output terminal at least comprises a first dummy load circuit for adjusting the load of the voltage-stabilized output terminal;

[0056] The first unregulated voltage output terminal at least comprises a second dummy load circuit and a first voltage oscillation detection circuit, wherein the second dummy load circuit is used to adjust the load of the first unregulated voltage output terminal, and the first voltage oscillation detection circuit is used to detect the number of pulses of the power supply voltage of the first unregulated voltage output terminal;

[0057] The second unregulated output terminal at least includes a third dummy load circuit and a second voltage oscillation detection circuit, the third dummy load circuit is used to adjust the load of the second unregulated output terminal, and the second voltage oscillation detection circuit is used to detect the number of pulses of the power supply voltage of the second unregulated output terminal.

[0058] Specifically, the voltage-stabilized output end usually refers to the voltage-stabilized output end that supplies power to the internal circuit of the air conditioner. In order to ensure stable voltage output, a first dummy load circuit is usually set at the voltage-stabilized output end to adjust the load of the voltage-stabilized output end. The first dummy load circuit is usually composed of components such as resistors and capacitors, which can simulate the load characteristics of the internal circuit of the air conditioner. By adjusting the parameters of the first dummy load circuit, the current demand under different load conditions can be simulated, thereby testing the stability and load capacity of the voltage-stabilized output end. Through the first dummy load circuit, it is possible to detect whether the output voltage of the voltage-stabilized output end is stable under different load conditions, as well as the response speed and stability when the load changes, so as to ensure that the air conditioner power supply circuit can provide stable and reliable power output under various working conditions, thereby ensuring the normal operation of the air conditioner.

[0059] Specifically, the first non-stabilized output terminal generally refers to the DC voltage obtained after the AC input voltage is rectified and filtered, including a second dummy load circuit and a first voltage oscillation detection circuit. The second dummy load circuit is used to adjust the load of the first non-stabilized output terminal, and the output voltage is adjusted by controlling the load. When the load increases, the circuit will automatically adjust the output voltage to maintain stability. The first voltage oscillation detection circuit is used to detect the number of pulses of the power supply voltage of the first non-stabilized output terminal to ensure the stability of the output voltage. When the output voltage fluctuation or abnormal number of pulses is detected, the circuit will make corresponding adjustments in time to ensure the normal operation and stable output of the circuit, realize stable regulation and monitoring of the output voltage, ensure the stability and reliability of the circuit, and thus ensure the normal operation and safe operation of the air-conditioning equipment.

[0060] Specifically, the second unregulated output terminal refers to an unregulated output terminal, which is usually used to supply power to some minor circuits or components in the air-conditioning system. In order to ensure that the unregulated output terminal can work normally, it is necessary to design a third dummy load circuit and a second voltage oscillation detection circuit. The third dummy load circuit can adjust the load of the second unregulated output terminal and ensure the stability and reliability of the voltage output by controlling the load of the circuit. When the circuit load changes, the third dummy load circuit can automatically adjust the current to maintain the stability of the output voltage. The second voltage oscillation detection circuit can detect the number of pulses of the power supply voltage of the second unregulated output terminal. By monitoring the pulse frequency and number of the output terminal, faults or abnormal conditions in the circuit can be discovered in time to ensure the normal operation of the power supply system and improve the stability and reliability of the air-conditioning power supply circuit. Through the cooperation of the third dummy load circuit and the second voltage oscillation detection circuit, effective control and monitoring of the unregulated output terminal can be achieved, thereby ensuring the normal operation of the air-conditioning system.

[0061] like Figure 2 As shown, the switching power supply circuit is a single-ended flyback switching power supply. The high-frequency transformer has a primary winding and four secondary windings, of which three secondary windings are used to output DC power, that is, one regulated output terminal and two unregulated output terminals, and the other is used to power the switching power supply IC. The regulated output terminal is connected to a dummy load circuit and other loads after rectification and filtering, and the unregulated output terminal is connected to a dummy load circuit, a voltage oscillation detection circuit and other loads after rectification and filtering.

[0062] Figure 3 is a flow chart of the operation of the air conditioner power supply circuit according to an embodiment of the present application, such as Figure 3 As shown, voltage oscillation detection is first performed, and the microprocessor processes the data, counts the number of oscillations, compares it with the threshold, and sends out a serial control signal. The controller sends an 8-bit serial signal to the parallel shift register 74HC595D, which converts it into a parallel signal and outputs a control signal. There is a serial-to-parallel data conversion. The source of the control signal is the microprocessor, but the signal structure is changed, and then the dummy load circuit is driven by the PNP transistor.

[0063] Specifically, the above-mentioned microprocessor is an integrated circuit chip, a central processing unit for executing computer program instructions. It is the core component in the computer system and is used to control and execute various computing tasks. The microprocessor is usually composed of an arithmetic logic unit (ALU), registers and a control unit, and can perform various arithmetic and logical operations. Common microprocessors include Intel's x86 series, AMD's Ryzen series, etc.

[0064] Specifically, the above-mentioned voltage oscillation detection is a method for detecting whether the voltage signal in the circuit oscillates. In the circuit, if the voltage signal fluctuates or oscillates periodically, it may cause the circuit performance to deteriorate or even damage the electronic components. Voltage oscillation detection can be performed by using instruments such as oscilloscopes or spectrum analyzers. By observing the waveform or spectrum diagram of the voltage signal, it can be determined whether there is an oscillation phenomenon in the circuit, and further analyze the oscillation frequency, amplitude and waveform and other characteristics to determine the cause of the oscillation and the solution.

[0065] Specifically, the above-mentioned 74HC595D is a parallel shift register, which is usually used to expand the output port of a microcontroller. It has 8-bit parallel input and serial output functions, and can simultaneously load 8-bit data from the parallel input port into the register, and then output it bit by bit through the serial output port. The device can load data bit by bit into the register through the serial data input port, and then output the data bit by bit to the external device through the clock signal, which can realize the expansion of multi-channel data input and output, so that the microcontroller can control more external devices.

[0066] Specifically, the above-mentioned PNP transistor driven dummy load circuit is used to simulate the circuit load to test the performance of the power supply. The PNP transistor is used as a switch to control the connection and disconnection of the load resistor. When the PNP transistor is turned on, the load resistor is connected to the power supply to simulate the real load. When the PNP transistor is turned off, the load resistor is disconnected, and the capacitor will store electrical energy to simulate the transient response when the real load is switched.

[0067] In some embodiments, the first dummy load circuit, the second dummy load circuit, and the third dummy load circuit are all composed of multiple parallel circuits, each of which is composed of a resistor and a triode in series. The first dummy load circuit, the second dummy load circuit, and the third dummy load circuit are usually used to simulate the load of the air conditioner, so as to control the parameters of the circuit and protect the circuit from overload. Each parallel circuit is composed of a resistor and a triode in series. Multiple parallel circuits form a dummy load circuit. The dummy load circuit simulates the load of the air conditioner so as to provide a controllable load when testing, debugging, and protecting the circuit. The dummy load circuit can help circuit designers simulate the actual load conditions when testing and debugging the air conditioner power supply circuit to ensure the normal operation and stability of the circuit. In addition, the dummy load circuit can also be used for overload protection. When the circuit is overloaded, the dummy load circuit will absorb excess power to protect the normal operation of the circuit. By using the dummy load circuit, the air conditioner power supply circuit can be effectively tested and debugged, the reliability and stability of the circuit can be improved, and the circuit can be protected from overload and the service life of the circuit can be extended.

[0068] Figure 4is a structural diagram of a dummy load circuit and a voltage oscillation detection circuit provided according to an embodiment of the present application, such as Figure 4 As shown, the dummy load circuit is composed of parallel single resistors R1, ..., Rn, and the voltage oscillation detection circuit uses the saturation region of the PNP transistor to detect voltage oscillation. The number of parallel resistors in the dummy load circuit is adjustable, and the resistors with appropriate numbers and resistance values ​​can be selected as needed to evenly adjust the power. In this embodiment, the dummy load at the voltage-regulated output end is used as the main control, using 8 resistors and controlled by a 74HC595D. The dummy loads at the other two non-regulated output ends are used as auxiliary controls, each using 4 resistors and controlled by a 74HC595D. The resistance value of each output end is determined according to demand. The voltage of the regulated output end is 12V, and the maximum dummy load power is 1.5W. The voltage of 1 / 2 of the non-regulated output end is 15V / 20V, and the maximum dummy load power is 1W.

[0069] Figure 5 is a flow chart of the dummy load control logic according to an embodiment of the present application, such as Figure 5 As shown, the microprocessor detects the voltage oscillation pulse of the non-regulated output terminal within 30ms, wherein the loads connected to the two output terminals are different, so the oscillation pulses are not necessarily the same, and both ports need to be detected, and then the number of voltage oscillation pulses is counted to determine whether it is necessary to make primary control over the dummy load, adjust the dummy load at the regulated output terminal, and adjust the 8 gears step by step. After the adjustment, the number of pulses within 30ms is counted again to determine whether it is necessary to make auxiliary adjustment to the dummy load, and adjust the dummy load at the non-regulated output terminal, and adjust the 4 gears step by step. If the output voltage is normal, all dummy loads are turned off.

[0070] Among them, the above-mentioned 8 gears correspond to 8 resistors, and the adjustment range can be adjusted according to actual needs. The adjustment range is the same as one of the embodiments. If the demand is to increase, one gear is increased within a cycle of 30ms, and multiple gears can be increased continuously. If the demand is to decrease, one gear is reduced within a cycle of 30ms, and multiple gears can be reduced continuously.

[0071] An embodiment of the present invention provides a computer-readable storage medium, wherein the computer-readable storage medium includes a stored program, wherein when the program is executed, a device where the computer-readable storage medium is located is controlled to execute a method for controlling an air-conditioning power supply circuit.

[0072] Specifically, the control method of the air conditioner power circuit includes:

[0073] Step S201, an acquisition step, acquires the number of pulses of the power supply voltage of the first unregulated output terminal within a preset time period.

[0074] Specifically, by obtaining the number of pulses of the non-regulated output power supply voltage within a preset time period, it can be used to monitor the stability and working status of the circuit. By counting the number of pulses of the non-regulated output power supply voltage, it is possible to determine whether there is an abnormality in the circuit, and to promptly discover the fault and take measures to repair it, thereby avoiding damage to the air-conditioning system or the occurrence of dangerous situations, thereby improving the stability and reliability of the air-conditioning power supply circuit, ensuring the normal operation of the air-conditioning system, extending the service life of the equipment, and reducing maintenance and replacement costs. By monitoring the number of pulses, it is also possible to provide early warning of possible faults, perform maintenance in a timely manner, and ensure user safety and comfort.

[0075] Step S202, an increasing step, when the number of pulses is greater than or equal to a preset threshold and the first dummy load circuit is turned on, increasing the resistance value of the first dummy load circuit.

[0076] Specifically, increasing the resistance value of the first dummy load circuit can effectively reduce the number of pulses in the circuit, thereby reducing power consumption and heat generation, and improving the efficiency and stability of the circuit. By increasing the resistance value, the output power of the circuit can be effectively adjusted to make it more in line with actual needs and extend the service life of the circuit. Increasing the resistance value of the first dummy load circuit can also reduce the noise and interference of the circuit, improve the anti-interference ability of the circuit, and ensure the stable operation of the air-conditioning system.

[0077] Step S203, an adjustment step, when the number of pulses is less than a preset threshold, adjusting the resistance value of the first dummy load circuit and the resistance value of the second dummy load circuit and the resistance value of the third dummy load circuit according to whether the first dummy load circuit at the voltage stabilization output end is turned on;

[0078] Specifically, by dynamically adjusting the resistance values ​​of the first dummy load circuit and the second dummy load circuit, the output power of the air-conditioning power supply can be effectively controlled, so that the air-conditioning power supply can maintain high-efficiency operation under different load conditions, thereby achieving energy saving. By adjusting the resistance value according to the situation where the number of pulses is less than the preset threshold, the air-conditioning power supply can still maintain stable output voltage and current when the load fluctuates greatly, thereby improving the stability and reliability of the power supply and extending its life: by dynamically adjusting the resistance value, the working pressure of the internal components of the air-conditioning power supply can be reduced, the temperature rise and loss of the components can be reduced, thereby extending the service life of the air-conditioning power supply.

[0079] Step S204, obtaining the number of pulses of the power supply voltage at the second unregulated output terminal, and sequentially performing the obtaining step, the increasing step and the adjusting step.

[0080] Specifically, the control process of the second unregulated voltage output terminal is the same as the control process of the first unregulated voltage output terminal, and the above three steps are performed in sequence.

[0081] Optionally, the unregulated output terminal includes a first unregulated output terminal and a second unregulated output terminal, and the resistance value of the first dummy load circuit and the resistance value of the second dummy load circuit are adjusted according to whether the first dummy load circuit of the regulated output terminal is turned on, including: when the first dummy load circuit is turned on, obtaining the voltage of the first unregulated output terminal to obtain the first voltage, obtaining the voltage of the second unregulated output terminal to obtain the second voltage; when the first voltage is greater than a preset voltage threshold and the second voltage is greater than the preset voltage threshold, turning off the first dummy load circuit or reducing the resistance value of the first dummy load circuit.

[0082] Optionally, the first unregulated output terminal includes a second dummy load circuit, and the second unregulated output terminal includes a third dummy load circuit. After obtaining the voltage of the first unregulated output terminal to obtain the first voltage, and obtaining the voltage of the second unregulated output terminal to obtain the second voltage, the method also includes: when the first voltage is greater than a preset voltage threshold or the second voltage is greater than a preset voltage threshold, increasing the resistance value of the second dummy load circuit and increasing the resistance value of the third dummy load circuit.

[0083] Optionally, the unregulated output terminal includes a first unregulated output terminal and a second unregulated output terminal, the first unregulated output terminal includes a second dummy load circuit, the second unregulated output terminal includes a third dummy load circuit, and the resistance value of the first dummy load circuit and the resistance value of the second dummy load circuit are adjusted according to whether the first dummy load circuit of the regulated output terminal is turned on, and also includes: when the first dummy load circuit is not turned on, turning off the first dummy load circuit, the second dummy load circuit and the third dummy load circuit.

[0084] Optionally, the method further includes: when the number of pulses is greater than or equal to a preset threshold and the first dummy load circuit is not turned on, turning on the first dummy load circuit.

[0085] Optionally, the unregulated output terminal includes a first unregulated output terminal and a second unregulated output terminal, the first unregulated output terminal includes a second dummy load circuit, and the second unregulated output terminal includes a third dummy load circuit, and the method also includes: obtaining the number of pulses of the power supply voltage of the first unregulated output terminal within a preset time period, and sequentially executing an increase step and an adjustment step; obtaining the number of pulses of the power supply voltage of the second unregulated output terminal within a preset time period, and sequentially executing an increase step and an adjustment step.

[0086] An embodiment of the present invention provides a control system for an air-conditioning power supply circuit, comprising: an air-conditioning power supply circuit, including a regulated output terminal, a first unregulated output terminal, and a second unregulated output terminal; one or more processors, a memory, and one or more programs, wherein the one or more programs are stored in the memory and are configured to be executed by the one or more processors, and the one or more programs include a control method for executing any of the above-mentioned air-conditioning power supply circuits.

[0087] Obviously, those skilled in the art should understand that the above modules or steps of the present invention can be implemented by a general computing device, they can be concentrated on a single computing device, or distributed on a network composed of multiple computing devices, they can be implemented by a program code executable by a computing device, so that they can be stored in a storage device and executed by the computing device, and in some cases, the steps shown or described can be executed in a different order than here, or they can be made into individual integrated circuit modules, or multiple modules or steps therein can be made into a single integrated circuit module for implementation. Thus, the present invention is not limited to any specific combination of hardware and software.

[0088] Those skilled in the art will appreciate that the embodiments of the present application may be provided as methods, systems, or computer program products. Therefore, the present application may adopt the form of a complete hardware embodiment, a complete software embodiment, or an embodiment in combination with software and hardware. Moreover, the present application may adopt the form of a computer program product implemented in one or more computer-usable storage media (including but not limited to disk storage, CD-ROM, optical storage, etc.) that include computer-usable program code.

[0089] The present application is described with reference to the flowcharts and / or block diagrams of the methods, devices (systems), and computer program products according to the embodiments of the present application. It should be understood that each process and / or box in the flowchart and / or block diagram, as well as the combination of the processes and / or boxes in the flowchart and / or block diagram, can be implemented by computer program instructions. These computer program instructions can be provided to a processor of a general-purpose computer, a special-purpose computer, an embedded processor, or other programmable data processing device to generate a machine, so that the instructions executed by the processor of the computer or other programmable data processing device generate instructions for implementing the processes in the flowchart and / or block diagram. Figure 1 A process or multiple processes and / or boxes Figure 1 A device that provides the functions specified in a block or multiple blocks.

[0090] These computer program instructions may also be stored in a computer-readable memory capable of directing a computer or other programmable data processing device to operate in a specific manner, so that the instructions stored in the computer-readable memory produce an article of manufacture comprising an instruction device, which implements the process Figure 1 A process or multiple processes and / or boxes Figure 1 A function specified in one or more boxes.

[0091] These computer program instructions can also be loaded onto a computer or other programmable data processing device so that a series of operating steps are executed on the computer or other programmable device to produce a computer-implemented process, thereby providing instructions for implementing the process. Figure 1 A process or multiple processes and / or boxes Figure 1 The steps for the functions specified in one or more boxes.

[0092] In a typical configuration, a computing device includes one or more processors (CPU), input / output interfaces, network interfaces, and memory.

[0093] The memory may include non-permanent memory in a computer-readable medium, random access memory (RAM) and / or non-volatile memory in the form of read-only memory (ROM) or flash RAM. The memory is an example of a computer-readable medium.

[0094] Computer readable media include permanent and non-permanent, removable and non-removable media that can be implemented by any method or technology to store information. Information can be computer readable instructions, data structures, program modules or other data. Examples of computer storage media include, but are not limited to, phase change memory (PRAM), static random access memory (SRAM), dynamic random access memory (DRAM), other types of random access memory (RAM), read-only memory (ROM), electrically erasable programmable read-only memory (EEPROM), flash memory or other memory technology, compact disk read-only memory (CD-ROM), digital versatile disk (DVD) or other optical storage, magnetic cassettes, magnetic tape disk storage or other magnetic storage devices or any other non-transmission media that can be used to store information that can be accessed by a computing device. As defined herein, computer readable media does not include temporary computer readable media (transitory media), such as modulated data signals and carrier waves.

[0095] It should also be noted that the terms "include", "comprises" or any other variations thereof are intended to cover non-exclusive inclusion, so that a process, method, commodity or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, commodity or device. In the absence of more restrictions, the elements defined by the sentence "comprises a ..." do not exclude the existence of other identical elements in the process, method, commodity or device including the elements.

[0096] The above are only preferred embodiments of the present application and are not intended to limit the present application. For those skilled in the art, the present application may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A control method for an air conditioner power circuit, characterized in that: The air conditioner power supply circuit includes a voltage-stabilized output terminal, a first non-stabilized output terminal, and a second non-stabilized output terminal, the voltage-stabilized output terminal includes a first dummy load circuit, the first non-stabilized output terminal includes a second dummy load circuit, the second non-stabilized output terminal includes a third dummy load circuit, the first dummy load circuit, the second dummy load circuit, and the third dummy load circuit include at least a resistor, including: An acquisition step of acquiring the number of pulses of the power supply voltage of the first unregulated output terminal within a preset time period; an increasing step, when the number of pulses is greater than or equal to a preset threshold and the first dummy load circuit is turned on, increasing the resistance value of the first dummy load circuit; an adjustment step, when the number of pulses is less than the preset threshold, adjusting the resistance value of the first dummy load circuit, the resistance value of the second dummy load circuit and the resistance value of the third dummy load circuit according to whether the first dummy load circuit of the voltage stabilization output end is turned on; The number of pulses of the power supply voltage at the second unregulated output terminal is obtained, and the obtaining step, the increasing step and the adjusting step are performed in sequence.

2. The control method of the air conditioner power circuit according to claim 1, characterized in that: According to whether the first dummy load circuit of the voltage-stabilized output terminal is turned on, adjusting the resistance value of the first dummy load circuit, the resistance value of the second dummy load circuit, and the resistance value of the third dummy load circuit, including: When the first dummy load circuit is turned on, obtaining a voltage at the first unregulated voltage output terminal to obtain a first voltage, and obtaining a voltage at the second unregulated voltage output terminal to obtain a second voltage; When the first voltage is greater than a preset voltage threshold and the second voltage is greater than the preset voltage threshold, the first dummy load circuit is turned off or the resistance value of the first dummy load circuit is reduced.

3. The control method of the air conditioner power circuit according to claim 2, characterized in that: After acquiring the voltage of the first unregulated voltage output terminal to obtain the first voltage, and acquiring the voltage of the second unregulated voltage output terminal to obtain the second voltage, the method further includes: When the first voltage is greater than the preset voltage threshold or the second voltage is greater than the preset voltage threshold, the resistance value of the second dummy load circuit is increased or the resistance value of the third dummy load circuit is increased.

4. The control method of the air conditioner power circuit according to claim 1, characterized in that: According to whether the first dummy load circuit of the voltage-stabilized output terminal is turned on, adjusting the resistance value of the first dummy load circuit, the resistance value of the second dummy load circuit, and the resistance value of the third dummy load circuit, further comprising: When the first dummy load circuit is not turned on, the second dummy load circuit and the third dummy load circuit are turned off.

5. The control method of the air conditioner power circuit according to claim 1, characterized in that: The method further comprises: When the number of pulses is greater than or equal to a preset threshold and the first dummy load circuit is not turned on, the first dummy load circuit is turned on.

6. The control method of the air conditioner power circuit according to claim 1, characterized in that: The unregulated voltage output terminal includes a first unregulated voltage output terminal and a second unregulated voltage output terminal, the first unregulated voltage output terminal includes a second dummy load circuit, the second unregulated voltage output terminal includes a third dummy load circuit, and the method further includes: Acquire the number of pulses of the power supply voltage of the first unregulated output terminal within the preset time period, and sequentially perform the increasing step and the adjusting step; The number of pulses of the power supply voltage of the second unregulated output terminal within the preset time period is obtained, and the increasing step and the adjusting step are performed in sequence.

7. An air conditioner power supply circuit, characterized in that: include: The voltage-stabilized output terminal at least comprises a first dummy load circuit for adjusting the load of the voltage-stabilized output terminal; A first unregulated voltage output terminal at least comprises a second dummy load circuit and a first voltage oscillation detection circuit, wherein the second dummy load circuit is used to adjust the load of the first unregulated voltage output terminal, and the first voltage oscillation detection circuit is used to detect the number of pulses of the power supply voltage of the first unregulated voltage output terminal; The second unregulated voltage output terminal at least includes a third dummy load circuit and a second voltage oscillation detection circuit, wherein the third dummy load circuit is used to adjust the load of the second unregulated voltage output terminal, and the second voltage oscillation detection circuit is used to detect the number of pulses of the power supply voltage of the second unregulated voltage output terminal.

8. The air conditioner power supply circuit according to claim 7, characterized in that: The first dummy load circuit, the second dummy load circuit and the third dummy load circuit are all composed of a plurality of parallel circuits, and each of the parallel circuits is composed of a resistor and a transistor connected in series.

9. A computer-readable storage medium, characterized in that: The computer-readable storage medium includes a stored program, wherein when the program is executed, the device where the computer-readable storage medium is located is controlled to execute the control method of the air-conditioning power supply circuit according to any one of claims 1 to 6.

10. A control system for an air-conditioning power supply circuit, characterized in that: include: An air conditioner power supply circuit includes a voltage-stabilized output terminal, a first non-voltage-stabilized output terminal, and a second non-voltage-stabilized output terminal; One or more processors, a memory, and one or more programs, wherein the one or more programs are stored in the memory and are configured to be executed by the one or more processors, and the one or more programs include a control method for executing the air conditioning power supply circuit described in any one of claims 1 to 6.

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