Air conditioner power supply circuit control method, system and air conditioner power supply circuit

Abstract

This application provides a control method, system, and power supply circuit for an air conditioner power supply circuit. The power supply circuit includes: a first dummy load circuit at a regulated output terminal, a second dummy load circuit at a first unregulated output terminal, and a third dummy load circuit at the second unregulated output terminal. Each of the first, second, and third dummy load circuits includes at least a resistor. The method includes: acquiring the number of pulses of the power supply voltage at the first unregulated output terminal within a preset time period; increasing the resistance value of the first dummy load circuit when the number of pulses is greater than or equal to a preset threshold and the first dummy load circuit is activated; and adjusting the resistance values ​​of the first, second, and third dummy load circuits based on whether the first dummy load circuit at the regulated output terminal is activated when the number of pulses is less than the preset threshold. This application solves the problem of fluctuating air conditioner power supply voltage.

Description

Technical Field

[0001] This application relates to the field of electrical engineering technology, and more specifically, to 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 the air conditioner power supply circuit. Background Technology

[0002] With the development of electronic technology and the diversification of product demands, single-ended flyback switching power supplies with multiple outputs have been widely used in the home appliance industry. In related technologies, multi-output switching power supplies often use the voltage of a single output circuit for voltage regulation control. That is, the feedback signal of the feedback circuit originates from only one output circuit, thus achieving a regulated output at the regulated output terminal. However, the voltage at other unregulated output terminals is relatively unstable due to the influence of the cross-regulation rate. To avoid large voltage fluctuations at the unregulated output terminals caused by a mismatch between output capability and actual demand, a suitable dummy load is usually added to the output terminal. In the design of the dummy load, if the load current is too small, the voltage regulation capability of the unregulated output terminal will decrease; if the load current is too large, it will lead to high standby power consumption.

[0003] Household air conditioners typically use a single-ended flyback switching power supply for DC power, with one regulated output for voltage feedback and multiple unregulated outputs. In some special cases, the regulated output has low power demand while the unregulated output has high power demand. In such situations, the output voltage of the unregulated output may oscillate and drop. If the voltage drop is severe, it will affect the stability of the control circuit. A common practice is to set a fixed dummy load resistor at the regulated output to increase power demand, but this is inflexible, cannot be adjusted, and increases standby power consumption.

[0004] To address this pain point, a flexible and adjustable dummy load solution is needed to adapt to different situations. Summary of the Invention

[0005] The main objective of this application is to 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, so as to at least solve the problem of easy fluctuation in air conditioner power supply voltage in the prior art.

[0006] To achieve the above objectives, according to one aspect of this application, a control method for an air conditioner power supply circuit is provided. The air conditioner power supply circuit includes a regulated output terminal, a first unregulated output terminal, and a second unregulated output terminal. The regulated output terminal includes a first dummy load circuit, the first unregulated output terminal includes a second dummy load circuit, and the second unregulated output terminal includes a third dummy load circuit. The first dummy load circuit, the second dummy load circuit, and the third dummy load circuit each include at least a resistor. The method includes: an acquisition step, acquiring the number of pulses of the power supply voltage of the first unregulated output terminal within a preset time period; an increase step, increasing the resistance value of the first dummy load circuit when the number of pulses is greater than or equal to a preset threshold and the first dummy load circuit is turned on; and an adjustment step, adjusting the resistance values ​​of the first dummy load circuit, the second dummy load circuit, and the third dummy load circuit according to whether the first dummy load circuit of the regulated output terminal is turned on when the number of pulses is less than the preset threshold; acquiring the number of pulses of the power supply voltage of the second unregulated output terminal, and sequentially executing the acquisition step, the increase step, and the adjustment step.

[0007] Optionally, adjusting the resistance values ​​of the first dummy load circuit, the second dummy load circuit, and the third dummy load circuit based on whether the first dummy load circuit at the regulated output terminal is turned on includes: when the first dummy load circuit is turned on, acquiring the voltage at the first unregulated output terminal to obtain a first voltage, acquiring the voltage at the second unregulated output terminal to obtain a second voltage; and 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, and obtaining the voltage of the second unregulated output terminal to obtain the second voltage, the method further includes: increasing the resistance value of the second dummy load circuit or increasing the resistance value of the third dummy load circuit when the first voltage is greater than the preset voltage threshold or the second voltage is greater than the preset voltage threshold.

[0009] Optionally, adjusting the resistance values ​​of the first dummy load circuit, the second dummy load circuit, and the third dummy load circuit according to whether the first dummy load circuit at the regulated output terminal is turned on further includes: turning off the second dummy load circuit and the third dummy load circuit when the first dummy load circuit is not turned on.

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

[0011] 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. The method further includes: obtaining the number of pulses of the power supply voltage of the first unregulated 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 output terminal within the preset time period, and sequentially executing the increasing step and the adjusting step.

[0012] To achieve the above objectives, according to one aspect of this application, an air conditioner power supply circuit is provided, comprising: a regulated output terminal, including at least a first dummy load circuit for adjusting the load of the regulated output terminal; a first unregulated output terminal, including at least 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 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 output terminal; and a second unregulated output terminal, including at least 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 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.

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

[0014] According to another aspect of this application, a computer-readable storage medium is provided, the computer-readable storage medium including a stored program, wherein, when the program is executed, it controls the device where the computer-readable storage medium is located to perform the control method of any of the above-described air conditioning power supply circuits.

[0015] According to another aspect of this application, a control system for an air conditioner power supply circuit is provided, comprising: an air conditioner 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 configured to be executed by the one or more processors, and the one or more programs include a control method for performing any of the above-described air conditioner power supply circuits.

[0016] According to the technical solution of this application, the air conditioner power supply circuit includes a regulated output terminal, a first unregulated output terminal, and a second unregulated output terminal. The regulated output terminal includes a first dummy load circuit, the first unregulated output terminal includes a second dummy load circuit, and the second unregulated output terminal includes a third dummy load circuit. The first, second, and third dummy load circuits each include at least a resistor. The circuit includes: an acquisition step, acquiring the number of pulses of the power supply voltage of the first unregulated output terminal within a preset time period; an increase step, increasing the resistance value of the first dummy load circuit when the number of pulses is greater than or equal to a preset threshold and the first dummy load circuit is turned on; and an adjustment step, adjusting the resistance values ​​of the first, second, and third dummy load circuits according to whether the first dummy load circuit of the regulated output terminal is turned on when the number of pulses is less than the preset threshold; acquiring the number of pulses of the power supply voltage of the second unregulated output terminal, and sequentially executing the acquisition step, the increase step, and the adjustment step. By setting up a dummy load circuit, the load power demand of the air conditioner power supply circuit is adjusted. The resistance value of the dummy load circuit is adjusted by detecting the number of pulses of the power supply voltage at the unregulated output terminal, thereby adjusting the air conditioner load power and making the power supply voltage more stable. Attached Figure Description

[0017] The accompanying drawings, which form part of this application, are used to provide a further understanding of this application. The illustrative embodiments and descriptions of this application are used to explain this application and do not constitute an undue limitation of this application. In the drawings:

[0018] Figure 1 This is a flowchart of a control method for an air conditioner power supply circuit according to an embodiment of this application;

[0019] Figure 2 This is a schematic diagram of an air conditioner power supply circuit according to an embodiment of this application;

[0020] Figure 3 This is a flowchart illustrating the operation of an air conditioner power supply circuit according to an embodiment of this application;

[0021] Figure 4 This is a schematic diagram of the structure of the dummy load circuit and voltage oscillation detection circuit provided according to the embodiments of this application;

[0022] Figure 5 This is a flowchart of the dummy load control logic according to an embodiment of this application. Detailed Implementation

[0023] It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other. This application will now be described in detail with reference to the accompanying drawings and embodiments.

[0024] To enable those skilled in the art to better understand the present application, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present application, and not all embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative effort 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, claims, and accompanying drawings of this application are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate for the embodiments of this application described herein. Furthermore, the terms "comprising" and "having," and any variations thereof, are intended to cover non-exclusive inclusion; for example, a process, method, system, product, or apparatus that comprises a series of steps or units is not necessarily limited to those steps or units explicitly listed, but may include other steps or units not explicitly listed or inherent to such processes, methods, products, or apparatus.

[0026] As described in the background section, in existing technologies, multi-output switching power supplies often use the voltage of a single output circuit for voltage regulation control. This means the feedback signal of the feedback circuit originates from only one output circuit, thus achieving a regulated output at the regulated output terminal. However, the voltage at other unregulated output terminals is relatively unstable due to the influence of the cross-regulation rate. To avoid large voltage fluctuations at the unregulated output terminals caused by a mismatch between output capability and actual demand, a suitable dummy load is usually added to the output terminal. In the design of the dummy load, if the load current is too small, the voltage regulation capability of the unregulated output terminal will decrease; if the load current is too large, it will lead to high standby power consumption. To address the problem of easily fluctuating air conditioner power supply voltage, embodiments of this 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 the air conditioner power supply circuit.

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

[0028] This embodiment provides a control method for an air conditioner power supply circuit that runs on a mobile terminal, computer terminal, or similar computing device. It should be noted that the steps shown in the flowchart in the accompanying drawings can be executed in a computer system such as a set of computer-executable instructions. Also, although a logical order is shown in the flowchart, in some cases, the steps shown or described may be executed in a different order than that shown here.

[0029] Figure 1This is a flowchart of a control method for an air conditioner power supply circuit according to an embodiment of this application. For example... Figure 1 As shown, the air conditioner power supply circuit includes a regulated output terminal, a first unregulated output terminal, and a second unregulated output terminal. The regulated output terminal includes a first dummy load circuit, the first unregulated output terminal includes a second dummy load circuit, and the second unregulated output terminal includes a third dummy load circuit. Each of the first, second, and third dummy load circuits includes at least a resistor. The method includes the following steps:

[0030] Step S201, Acquisition Step, Acquire the number of pulses of the power supply voltage of the first unregulated output terminal within a preset time period;

[0031] Specifically, by acquiring the number of pulses of the unregulated output power supply voltage within a preset time period, the stability and operating status of the circuit can be monitored. By counting the number of pulses of the unregulated output power supply voltage, it is possible to determine whether there are any abnormalities in the circuit, detect faults in a timely manner, and take measures to repair them, thereby avoiding damage to the air conditioning system or the occurrence of dangerous situations. This improves the stability and reliability of the air conditioning power supply circuit, ensures the normal operation of the air conditioning system, extends the service life of the equipment, and reduces maintenance and replacement costs. By monitoring the number of pulses, it is also possible to provide early warnings of possible faults, perform timely maintenance, and ensure the safety and comfort of users.

[0032] Step S202, step increase: when the number of pulses is greater than or equal to a preset threshold and the first dummy load circuit is turned on, increase 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, improving circuit efficiency and stability. Increasing the resistance value can effectively adjust the output power of the circuit to better meet actual needs, extend the service life of the circuit, reduce circuit noise and interference, improve the circuit's anti-interference ability, and ensure the stable operation of the air conditioning system.

[0034] Step S203, adjustment step: when the number of pulses is less than a preset threshold, adjust 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 at the voltage regulator output terminal is turned on.

[0035] Specifically, by dynamically adjusting the resistance values ​​of the first and second dummy load circuits, the output power of the air conditioner power supply can be effectively controlled, enabling the air conditioner power supply to maintain high efficiency under different load conditions, thereby achieving energy saving. Adjusting the resistance value according to the number of pulses being less than a preset threshold allows the air conditioner power supply to maintain a stable output voltage and current even under large load fluctuations, improving the stability and reliability of the power supply and extending its lifespan. By dynamically adjusting the resistance value, the working pressure on the internal components of the air conditioner power supply can be reduced, the temperature rise and losses of the components can be reduced, thereby extending the service life of the air conditioner power supply.

[0036] Step S204: Obtain the number of pulses of the power supply voltage at the second unregulated output terminal, and execute the acquisition step, the increase step, and the adjustment step in sequence.

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

[0038] In this embodiment, the air conditioner power supply circuit includes a regulated output terminal, a first unregulated output terminal, and a second unregulated output terminal. The regulated output terminal includes a first dummy load circuit, the first unregulated output terminal includes a second dummy load circuit, and the second unregulated output terminal includes a third dummy load circuit. Each of the first, second, and third dummy load circuits includes at least a resistor. The circuit includes: an acquisition step, acquiring the number of pulses of the power supply voltage at the first unregulated output terminal within a preset time period; an increase step, increasing the resistance value of the first dummy load circuit when the number of pulses is greater than or equal to a preset threshold and the first dummy load circuit is active; and an adjustment step, adjusting the resistance values ​​of the first, second, and third dummy load circuits based on whether the first dummy load circuit at the regulated output terminal is active when the number of pulses is less than the preset threshold; acquiring the number of pulses of the power supply voltage at the second unregulated output terminal, and sequentially executing the acquisition step, the increase step, and the adjustment step. By setting up a dummy load circuit, the load power demand of the air conditioner power supply circuit is adjusted. The resistance value of the dummy load circuit is adjusted by detecting the number of pulses of the power supply voltage at the unregulated output terminal, thereby adjusting the air conditioner load power and making the power supply voltage more stable.

[0039] 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 regulated output terminal is turned on. Specifically, this can be achieved through the following steps: when the first dummy load circuit is turned on, the voltage of the first unregulated output terminal is obtained to obtain a first voltage, and the voltage of the second unregulated output terminal 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 the 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 of the first and second unregulated output terminals and determining whether the resistance value of the first dummy load circuit needs to be adjusted based on the preset voltage threshold, the output stability of the circuit can be effectively controlled. When both the first and second voltages are higher than the preset voltage threshold, the resistance value of the first dummy load circuit is turned off or reduced, which can make the circuit more stable during operation and avoid abnormal operation or damage to the equipment due to voltage fluctuations. This can 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 unregulated output terminal and obtaining the first voltage, and obtaining the voltage of the second unregulated output terminal and obtaining the second voltage, the above method further 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, increase the resistance value of the second dummy load circuit or increase the resistance value of the third dummy load circuit.

[0042] This solution ensures that when the voltage exceeds a 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 conditioner power supply circuit, ensuring the circuit works normally and extending its service life. By adjusting the resistance value of the dummy load circuit according to the actual situation, it can better adapt to the circuit's working state under different working environments and load conditions, improving the circuit's applicability and flexibility.

[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 regulated output terminal is turned on. Specifically, this can also be achieved through 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 activation of the first dummy load circuit, the resistance value of the unregulated output terminal can be adjusted, thereby dynamically adjusting the output power of the circuit during actual use and controlling parameters such as the temperature and fan speed of the air conditioner. By shutting down the first, second, and third dummy load circuits, energy can be effectively saved and the service life of electrical appliances can be extended. Shutting down the above load circuits can reduce power consumption, reduce wear and tear on electrical appliances, and also reduce the impact on the environment. By controlling the switching of the load circuits, electricity usage can be managed more effectively, energy utilization can be improved, energy waste can be reduced, current flow in the circuit can be reduced, the possibility of circuit failure can be reduced, and the stability and safety of the circuit can be improved.

[0045] In the specific implementation process, the above method also 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, the first dummy load circuit is turned on.

[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, activating the first dummy load circuit can effectively improve the load-carrying capacity of the corresponding unregulated output terminal, avoid overload, and protect the safe operation of the circuit and equipment. By implementing this function through control methods, the intelligence and automation of the air conditioner power supply circuit can be improved, better meeting user needs and enhancing the performance and reliability of the air conditioner power supply circuit.

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

[0048] In this scheme, by monitoring and adjusting the number of pulses of the power supply voltage at the unregulated output terminal, the output stability of the air conditioning power circuit can be controlled, thereby improving the efficiency and performance of the air conditioning system. By increasing and adjusting the steps, problems at the unregulated output terminal can be detected and resolved in a timely manner, ensuring the normal operation of the circuit. By monitoring and adjusting the number of pulses of the power supply voltage at the second unregulated output terminal, the air conditioning system can be effectively protected from voltage fluctuations or other external factors, improving the stability and reliability of the system.

[0049] As described above, this application proposes a dummy load control method and control circuit for a single-ended flyback switching power supply. This method enables real-time monitoring of the voltage at the unregulated output terminal, flexible adjustment of the dummy load at each output terminal, prevention of excessively low or high voltage at the unregulated output terminal, and, compared to existing fixed dummy load schemes, reduction of standby power consumption. A voltage oscillation detection circuit detects the oscillation of each unregulated output terminal, counts the number of pulses within a certain time period, indirectly determining the power demand of the unregulated output terminal and whether dummy load adjustment is necessary. The dummy load control is divided into primary control and auxiliary control. Primary control adjusts the dummy load at the regulated output terminal to regulate the power demand of the switching power supply, while auxiliary control adjusts the dummy load at the unregulated terminal. Primary control adjusts the overall output, while auxiliary control makes detailed adjustments to individual output terminals. If dummy load adjustment is required, primary adjustment is performed first, adjusting until the voltage value at the unregulated output terminal is greater than or equal to the low-voltage threshold. If the voltage value is greater than the over-voltage threshold, auxiliary adjustment is performed.

[0050] Meanwhile, the technical solutions provided by the above embodiments of this application have the following beneficial effects: they can flexibly adjust the power of the dummy load, thus optimizing the standby power consumption performance of the circuit; they can monitor and adjust the voltage of the unregulated output terminal in real time, thereby reducing the cross-regulation rate of the switching power supply.

[0051] In other words, the above-mentioned technical solutions provided in this application comprehensively consider multiple factors. By statistically analyzing the number of voltage oscillations, it is possible to determine whether the power demand of the unregulated 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 adjusted in a coordinated manner to achieve effective voltage regulation within a certain power range and reduce the cross-regulation rate.

[0052] This application also provides an air conditioner power supply circuit. It should be noted that the air conditioner power supply circuit of this application embodiment can be used to execute the control method for the air conditioner power supply circuit provided in this application embodiment. This circuit is used to implement the above embodiments and preferred embodiments; details already described will not be repeated.

[0053] The following describes the air conditioner power supply circuit provided in the embodiments of this application.

[0054] Figure 2 This is a schematic diagram of the air conditioner power supply circuit according to an embodiment of this application. Figure 2 As shown, the circuit includes:

[0055] The regulated output terminal includes at least a first dummy load circuit for adjusting the load on the regulated output terminal;

[0056] The first unregulated output terminal includes at least 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 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 output terminal.

[0057] The second unregulated output terminal includes at least 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 regulated output terminal usually refers to the regulated output terminal that supplies power to the internal circuitry of the air conditioner. To ensure a stable voltage output, a first dummy load circuit is usually set up at the regulated output terminal to adjust the load on the regulated output terminal. The first dummy load circuit is usually composed of components such as resistors and capacitors, which can simulate the load characteristics of the internal circuitry 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 regulated output terminal. Through the first dummy load circuit, it is possible to detect whether the output voltage of the regulated output terminal 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 a stable and reliable power output under various operating conditions and ensure the normal operation of the air conditioner.

[0059] Specifically, the first unregulated output terminal typically refers to the DC voltage obtained after rectification and filtering of the AC input voltage. It includes a second dummy load circuit and a first voltage oscillation detection circuit. The second dummy load circuit adjusts the load on the first unregulated output terminal, regulating the output voltage by controlling the load size. When the load increases, the circuit automatically adjusts the output voltage to maintain stability. The first voltage oscillation detection circuit detects the number of pulses in the power supply voltage at the first unregulated output terminal to ensure its stability. When voltage fluctuations or abnormal pulse counts are detected, the circuit makes timely adjustments to ensure normal operation and stable output, achieving stable regulation and monitoring of the output voltage, ensuring circuit stability and reliability, and thus guaranteeing the normal and safe operation of the air conditioning equipment.

[0060] Specifically, the second unregulated output terminal refers to an unregulated output terminal, typically used to power some secondary circuits or components in an air conditioning system. To ensure the normal operation of this unregulated output terminal, a third dummy load circuit and a second voltage oscillation detection circuit need to be designed. The third dummy load circuit can adjust the load of the second unregulated output terminal, ensuring 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 in the power supply voltage of the second unregulated output terminal. By monitoring the pulse frequency and number at the output terminal, faults or abnormalities in the circuit can be detected in a timely manner, ensuring the normal operation of the power supply system and improving 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 one primary winding and four secondary windings. Three of the secondary windings are used to output DC power, namely, one regulated output terminal and two unregulated output terminals. The other is used to power the switching power supply IC. The regulated output terminal is connected to the dummy load circuit and other loads after rectification and filtering. The unregulated output terminal is connected to the dummy load circuit, voltage oscillation detection circuit and other loads after rectification and filtering.

[0062] Figure 3 This is a flowchart illustrating the operation of the air conditioner power supply circuit according to an embodiment of this application, such as... Figure 3 As shown, voltage oscillation detection is performed first. The microprocessor processes the data, counts the number of oscillations, compares it with a threshold, and sends 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 the control signal. There is a serial-to-parallel data conversion involved. The source of the control signal is the microprocessor, but the signal structure is changed. Then, the dummy load circuit is driven by a PNP transistor.

[0063] Specifically, the aforementioned microprocessor is an integrated circuit chip, a central processing unit used to execute computer program instructions. It is the core component of a computer system, used to control and execute various computing tasks. A microprocessor is typically 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 and AMD's Ryzen series.

[0064] Specifically, the voltage oscillation detection method described above is a method for detecting whether a voltage signal in a circuit oscillates. If a voltage signal fluctuates or oscillates periodically in a circuit, it may cause a decrease in circuit performance or even damage to electronic components. Voltage oscillation detection can be performed using instruments such as an oscilloscope or a spectrum analyzer. By observing the waveform or spectrum of the voltage signal, it can be determined whether there is an oscillation phenomenon in the circuit, and further analysis of the frequency, amplitude, and waveform characteristics of the oscillation can be conducted to determine the cause of the oscillation and the solution.

[0065] Specifically, the 74HC595D mentioned above is a parallel shift register, typically used to expand the output ports of a microcontroller. It has 8-bit parallel input and serial output capabilities, enabling the simultaneous loading of 8 bits of data from the parallel input port into the register, and then outputting the data bit by bit through the serial output port. This 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 external devices through the clock signal. It can realize the expansion of multiple data inputs and outputs, allowing the microcontroller to control more external devices.

[0066] Specifically, the PNP transistor driving dummy load circuit described above is used to simulate 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 stores electrical energy to simulate the transient response when the real load is switched.

[0067] In some embodiments, the first, second, and third dummy load circuits are each composed of multiple parallel circuits. Each parallel circuit consists of a resistor and a transistor connected in series. These circuits are typically used to simulate the load of an air conditioner, allowing for the control of circuit parameters and protection against overload. Each parallel circuit, consisting of a resistor and a transistor connected in series, forms a dummy load circuit. This dummy load circuit simulates the load of the air conditioner, providing a controllable load during circuit testing, debugging, and protection. The dummy load circuit helps circuit designers simulate actual load conditions when testing and debugging air conditioner power supply circuits, ensuring normal operation and stability. Furthermore, the dummy load circuit can also be used for overload protection. When the circuit is overloaded, the dummy load circuit absorbs excess power, protecting the circuit's normal operation. By using dummy load circuits, air conditioner power supply circuits can be effectively tested and debugged, improving circuit reliability and stability, protecting the circuit from overload, and extending its lifespan.

[0068] Figure 4This is a schematic diagram of the dummy load circuit and voltage oscillation detection circuit provided according to embodiments of this application, as shown below. Figure 4 As shown, the dummy load circuit is controlled by parallel single resistors R1, ..., Rn. The voltage oscillation detection circuit uses the saturation region of a PNP transistor to detect voltage oscillation. The number of parallel resistors in the dummy load circuit is adjustable. Appropriate numbers and values ​​of resistors can be selected as needed to evenly distribute the power. In this embodiment, the dummy load at the regulated output terminal is the main control, using 8 resistors and controlled by a 74HC595D. The dummy loads at the other two unregulated output terminals are auxiliary controls, each using 4 resistors and controlled by a single 74HC595D. The resistance value at each output terminal is determined according to requirements. The regulated output terminal voltage is 12V, with a maximum dummy load power of 1.5W. The half voltage at the unregulated output terminals is 15V / 20V, with a maximum dummy load power of 1W for both.

[0069] Figure 5 This is a flowchart of the dummy load control logic according to an embodiment of this application, such as... Figure 5 As shown, the microprocessor detects the voltage oscillation pulses at the unregulated output terminals within 30ms. Since the two output terminals are connected to different loads, the oscillation pulses may not be the same, so both ports need to be detected. After that, the number of voltage oscillation pulses is counted to determine whether the dummy load needs to be controlled. The dummy load at the regulated output terminal is adjusted step by step in 8 levels. After adjustment, the number of pulses within 30ms is counted again to determine whether the dummy load needs to be adjusted as an auxiliary. The dummy load at the unregulated output terminal is adjusted step by step in 4 levels. If the output voltage is normal, all dummy loads are turned off.

[0070] The above 8 levels correspond to 8 resistors. The adjustment range can be adjusted according to actual needs. Taking the same adjustment range as one example, if the need is to increase, the range is increased by 1 level within a 30ms cycle, and multiple levels can be increased continuously. If the need is to decrease, the range is decreased by 1 level within a 30ms cycle, and multiple levels can be decreased continuously.

[0071] This invention provides a computer-readable storage medium including a stored program, wherein, when the program is executed, a control method for controlling the device containing the computer-readable storage medium to perform an air conditioning power circuit is provided.

[0072] Specifically, the control methods for the air conditioner power supply circuit include:

[0073] Step S201, the 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 acquiring the number of pulses of the unregulated output power supply voltage within a preset time period, the stability and operating status of the circuit can be monitored. By counting the number of pulses of the unregulated output power supply voltage, it is possible to determine whether there are any abnormalities in the circuit, detect faults in a timely manner, and take measures to repair them, thereby avoiding damage to the air conditioning system or the occurrence of dangerous situations. This improves the stability and reliability of the air conditioning power supply circuit, ensures the normal operation of the air conditioning system, extends the service life of the equipment, and reduces maintenance and replacement costs. By monitoring the number of pulses, it is also possible to provide early warnings of possible faults, perform timely maintenance, and ensure the safety and comfort of users.

[0075] Step S202, step increase: when the number of pulses is greater than or equal to a preset threshold and the first dummy load circuit is turned on, increase 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, improving circuit efficiency and stability. Increasing the resistance value can effectively adjust the output power of the circuit to better meet actual needs, extend the service life of the circuit, reduce circuit noise and interference, improve the circuit's anti-interference ability, and ensure the stable operation of the air conditioning system.

[0077] Step S203, adjustment step: when the number of pulses is less than a preset threshold, adjust 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 at the voltage regulator output terminal is turned on.

[0078] Specifically, by dynamically adjusting the resistance values ​​of the first and second dummy load circuits, the output power of the air conditioner power supply can be effectively controlled, enabling the air conditioner power supply to maintain high efficiency under different load conditions, thereby achieving energy saving. Adjusting the resistance value according to the number of pulses being less than a preset threshold allows the air conditioner power supply to maintain a stable output voltage and current even under large load fluctuations, improving the stability and reliability of the power supply and extending its lifespan. By dynamically adjusting the resistance value, the working pressure on the internal components of the air conditioner power supply can be reduced, lowering the temperature rise and losses of the components, thereby extending the service life of the air conditioner power supply.

[0079] Step S204: Obtain the number of pulses of the power supply voltage at the second unregulated output terminal, and execute the acquisition step, the increase step, and the adjustment step in sequence.

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

[0081] Optionally, the unregulated output terminal includes a first unregulated output terminal and a second unregulated output terminal. Adjusting the resistance values ​​of the first and second dummy load circuits based on whether the first dummy load circuit of the regulated output terminal is turned on includes: when the first dummy load circuit is turned on, acquiring the voltage of the first unregulated output terminal to obtain a first voltage, acquiring the voltage of the second unregulated output terminal to obtain a second voltage; and 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 a first voltage, and obtaining the voltage of the second unregulated output terminal to obtain a second voltage, the method further includes: if 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, and the second unregulated output terminal includes a third dummy load circuit. The resistance values ​​of the first dummy load circuit and the second dummy load circuit are adjusted according to whether the first dummy load circuit of the regulated output terminal is turned on. The method further includes turning off the first dummy load circuit, the second dummy load circuit, and the third dummy load circuit when the first dummy load circuit is not turned on.

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

[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. The method further includes: obtaining the number of pulses of the power supply voltage of the first unregulated output terminal within a preset time period, and sequentially performing an increasing step and an adjusting step; obtaining the number of pulses of the power supply voltage of the second unregulated output terminal within a preset time period, and sequentially performing an increasing step and an adjusting step.

[0086] This invention provides a control system for an air conditioner power supply circuit, comprising: an air conditioner 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 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-described air conditioner power supply circuits.

[0087] It is obvious to those skilled in the art that the modules or steps of the present invention described above can be implemented using general-purpose computing devices. They can be centralized on a single computing device or distributed across a network of multiple computing devices. They can be implemented using computer-executable program code, and thus can be stored in a storage device for execution by a computing device. In some cases, the steps shown or described can be performed in a different order than those described herein, or they can be fabricated as separate integrated circuit modules, or multiple modules or steps can be fabricated as a single integrated circuit module. Thus, the present invention is not limited to any particular combination of hardware and software.

[0088] Those skilled in the art will understand that embodiments of this application can be provided as methods, systems, or computer program products. Therefore, this application can take the form of a completely hardware embodiment, a completely software embodiment, or an embodiment combining software and hardware aspects. Furthermore, this application can take the form of a computer program product embodied on one or more computer-usable storage media (including but not limited to disk storage, CD-ROM, optical storage, etc.) containing computer-usable program code.

[0089] This application is described with reference to flowchart illustrations and / or block diagrams of methods, apparatus (systems), and computer program products according to embodiments of this application. It will be understood that each block of the flowchart illustrations and / or block diagrams, and combinations of blocks in the flowchart illustrations and / or block diagrams, can be implemented by computer program instructions. These computer program instructions can be provided to a processor of a general-purpose computer, special-purpose computer, embedded processor, or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing apparatus, generate instructions for implementing the flowchart... Figure 1 One or more processes and / or boxes Figure 1 A device that provides the functions specified in one or more boxes.

[0090] These computer program instructions may also be stored in a computer-readable storage medium that can direct a computer or other programmable data processing device to function in a particular manner, such that the instructions stored in the computer-readable storage medium produce an article of manufacture including instruction means, which are implemented in a process Figure 1 One or more processes and / or boxes Figure 1 The function specified in one or more boxes.

[0091] These computer program instructions may also be loaded onto a computer or other programmable data processing equipment to cause a series of operational steps to be performed on the computer or other programmable equipment to produce a computer-implemented process, thereby providing instructions that execute on the computer or other programmable equipment for implementing the process. Figure 1 One or more processes and / or boxes Figure 1 The steps of the function 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] Memory may include non-persistent memory in computer-readable media, such as random access memory (RAM) and / or non-volatile memory, such as read-only memory (ROM) or flash RAM. Memory is an example of computer-readable media.

[0094] Computer-readable media includes both permanent and non-permanent, removable and non-removable media that can store information using any method or technology. Information can be computer-readable instructions, data structures, modules of programs, 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 technologies, CD-ROM, digital versatile optical disc (DVD) or other optical storage, magnetic tape, magnetic disk storage or other magnetic storage devices, or any other non-transferable medium that can be used to store information accessible by a computing device. As defined herein, computer-readable media does not include transient computer-readable media, such as modulated data signals and carrier waves.

[0095] It should also be noted that the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus. Unless otherwise specified, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes that element.

[0096] The above are merely preferred embodiments of this application and are not intended to limit this application. Various modifications and variations can be made to this application by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the protection scope of this application.

Claims

1. A control method of an air conditioner power supply circuit, characterized by, The air conditioner power supply circuit includes a regulated output terminal, a first unregulated output terminal, and a second unregulated output terminal. The regulated output terminal includes a first dummy load circuit, the first unregulated output terminal includes a second dummy load circuit, and the second unregulated output terminal includes a third dummy load circuit. Each of the first, second, and third dummy load circuits includes at least a resistor. The acquisition step involves acquiring the number of pulses of the power supply voltage at the first unregulated output terminal within a preset time period. The step of increasing the resistance is to increase the resistance value of the first dummy load circuit when the number of pulses is greater than or equal to a preset threshold and the first dummy load circuit is turned on. The adjustment steps involve adjusting the resistance values ​​of the first dummy load circuit, the second dummy load circuit, and the third dummy load circuit, depending on whether the first dummy load circuit at the voltage regulator output terminal is turned on, when the number of pulses is less than the preset threshold. Obtain the number of pulses of the power supply voltage at the second unregulated output terminal, and execute the acquisition step, the increase step, and the adjustment step in sequence.

2. The control method of the power supply circuit of an air conditioner according to claim 1, characterized by, Adjusting the resistance values ​​of the first dummy load circuit, the second dummy load circuit, and the third dummy load circuit based on whether the first dummy load circuit at the regulated output terminal is turned on, including: When the first dummy load circuit is turned on, the voltage of the first unregulated output terminal is obtained to obtain the first voltage, and the voltage of the second unregulated output terminal is obtained to obtain the second voltage. If 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 power supply circuit of an air conditioner according to claim 2, characterized by, After obtaining the voltage at the first unregulated output terminal to obtain a first voltage, and obtaining the voltage at the second unregulated output terminal to obtain a second voltage, the method further includes: If the first voltage is greater than the preset voltage threshold or the second voltage is greater than the preset voltage threshold, increase the resistance value of the second dummy load circuit or increase the resistance value of the third dummy load circuit.

4. The control method of the power supply circuit of an air conditioner according to claim 1, characterized by, Adjusting the resistance values ​​of the first dummy load circuit, the second dummy load circuit, and the third dummy load circuit based on whether the first dummy load circuit at the regulated output terminal is turned on, further including: If 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 power supply circuit of an air conditioner according to claim 1, characterized by, The method further includes: If 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 power supply circuit of an air conditioner according to claim 1, characterized by, 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. The method further includes: Obtain the number of pulses of the power supply voltage at the first unregulated output terminal within the preset time period, and execute the increasing step and the adjusting step in sequence; The number of pulses of the second non-regulated output power supply voltage in the preset time period is obtained, and the increasing step and the adjusting step are executed in sequence.

7. An air conditioner power supply circuit characterized by comprising: Comprising: a regulated output terminal, at least comprising a first dummy load circuit for adjusting the load of the regulated output terminal; a first non-regulated output terminal, at least comprising a second dummy load circuit for adjusting the load of the first non-regulated output terminal and a first voltage oscillation detection circuit for detecting the number of pulses of the first non-regulated output power supply voltage; a second non-regulated output terminal, at least comprising a third dummy load circuit for adjusting the load of the second non-regulated output terminal and a second voltage oscillation detection circuit for detecting the number of pulses of the second non-regulated output power supply voltage; a computing device for executing the control method of the air conditioner power supply circuit according to any one of claims 1 to 6.

8. The power supply circuit of an air conditioner according to claim 7, wherein 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 triode in series.

9. A computer-readable storage medium, characterized in that, The computer readable storage medium comprises a stored program, wherein when the program runs, the device where the computer readable storage medium is located executes the control method of the air conditioner power supply circuit according to any one of claims 1 to 6.

10. A control system for an air conditioner power supply circuit, characterized in that, Comprising: an air conditioner power supply circuit comprising a regulated output terminal, a first non-regulated output terminal and a second non-regulated 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 configured to be executed by the one or more processors, and the one or more programs comprise a program for executing the control method of the air conditioner power supply circuit according to any one of claims 1 to 6.

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