Power supply adjustment method, power supply adjustment circuit, and electronic device

Abstract

This application discloses a power supply regulation method, a power supply regulation circuit, and an electronic device. The power supply regulation method includes: receiving any number of first power inputs provided by at least two first power supply circuits; converting each first power input into a first AC signal; generating each first control signal using a first error value between each first reference signal and each first power input to regulate each first AC signal; converting each first AC signal into a second AC signal, and then into a first power output; generating a second control signal using a second error value between a second reference signal and the first power output to regulate the first power output; and providing the first power output to a second power supply circuit and / or other first power supply circuits without first power inputs. In this manner, the power supply regulation method of this application can effectively ensure power supply stability and provides a more timely and effective response.

Description

Technical Field

[0001] This application relates to the field of power supply technology, and in particular to power supply regulation methods, power supply regulation circuits, and electronic devices. Background Technology

[0002] With the rapid development of power supply technology, high efficiency and high power density have become a development trend in power conditioning devices. Modern power conditioning devices typically require support for the grid, solar photovoltaic panels to charge batteries, or inverter output.

[0003] However, current traditional power regulation devices, when involving multiple different power sources such as the power grid, solar photovoltaic panels, and batteries, typically use a different approach: the power grid charges the batteries, and the batteries invert and output AC power to supply the load; the solar photovoltaic panels charge the batteries, and the batteries invert and output AC power to supply the load. These components are independent modules, and the corresponding control strategies are also designed to drive and control each module independently. This results in complex control methods, lack of support for coordinated input from different power sources, inability to derating operation in case of partial power source failure, and poor power supply stability. Summary of the Invention

[0004] The main technical problem addressed by this application is to provide a power supply regulation method, a power supply regulation circuit, and an electronic device, which can solve the problems of existing power supply regulation methods being relatively complex, not supporting collaborative input of different power supplies, being unable to derating operation in response to partial power supply failures, and having poor power supply stability.

[0005] To solve the above-mentioned technical problems, one technical solution adopted in this application is: providing a power supply regulation method, wherein the power supply regulation method includes: receiving any number of first power inputs provided by at least two first power supply circuits respectively; converting each first power input into a first AC signal; generating each first control signal using a first error value between each first reference signal and each first power input; regulating each first AC signal using each first control signal; converting each first AC signal into a second AC signal; converting the second AC signal into a first power output; generating a second control signal using a second error value between a second reference signal and the first power output; regulating the first power output using the second control signal; and providing the first power output to a second power supply circuit and / or other first power supply circuits that do not have first power inputs.

[0006] Before the step of generating each first control signal using the first error value between each first reference signal and each first power input, the method further includes: obtaining the set output power of each first power circuit; setting each first reference signal using each set output power; or receiving each first reference signal sent by the host computer.

[0007] After the step of receiving any number of first power inputs provided by at least two first power circuits, and before the step of converting each first power input into each first AC signal, the method further includes: detecting whether each first power input is within a set threshold range; if there is a first power input that is not within the set threshold range, turning off each first power input that is not within the set threshold range.

[0008] Before the step of generating each first control signal using the first error value between each first reference signal and each first power input, the method further includes: adjusting each first power input that is within a set threshold range; and adjusting each first reference signal corresponding to each first power input using the adjusted first power input.

[0009] The step of generating a second control signal using a second error value between a second reference signal and a first power supply output further includes: adjusting the second reference signal using each adjusted first power supply input; or adjusting the second reference signal using each adjusted first reference signal.

[0010] The step of converting each first AC signal into a second AC signal includes: converting each first AC signal into each resonant current; and converting each resonant current into a second AC signal.

[0011] The step of converting each first power input into each first AC signal includes: performing power factor correction processing on each first power input; and converting each first power input after power factor correction processing into each first AC signal.

[0012] The power supply regulation method further includes: receiving a second power input provided by a second power supply circuit; converting the second power input into a third AC signal; generating a third control signal using a third error value between a third reference signal and the second power input; regulating the third AC signal using the third control signal; converting the third AC signal into a preset number of fourth AC signals; converting each fourth AC signal into each second power output; generating each fourth control signal using a fourth error value between each fourth reference signal and each second power output; regulating each second power output using each fourth control signal; and outputting each second power output to each first power supply circuit.

[0013] To solve the above-mentioned technical problems, another technical solution adopted in this application is: to provide a power supply regulation circuit, wherein the power supply regulation circuit is used to couple with at least two first power supply circuits and second power supply circuits; wherein the power supply regulation circuit uses the power supply regulation method as described in any of the above claims to regulate the first power input provided by each first power supply circuit.

[0014] To solve the above-mentioned technical problems, another technical solution adopted in this application is: to provide an electronic device, wherein the electronic device includes a housing and a power regulation circuit connected to the housing; wherein the power regulation circuit is the power regulation circuit as described above.

[0015] The beneficial effects of this application are as follows: Unlike the prior art, the power regulation method provided by this application receives any number of first power inputs provided by at least two first power circuits respectively, so as to use the first power circuit with the first power input to supply power to the second power circuit and / or other first power circuits without the first power input, and performs sampling feedback regulation on the first power input and the first power output, thereby effectively realizing power management with multiple power inputs, closed-loop feedback, and AC / DC hybrid conversion. It supports different power inputs working together, performs parallel regulation and synthesis on multiple independent first power inputs to output a high-precision, high-stability AC or DC power supply, and supports reverse power supply to passive loads or other power modules. It can still maintain derating operation without downtime when some power supplies fail, thereby effectively ensuring power supply stability. Moreover, the response speed is more timely and effective due to the sampling feedback regulation of the power input. Attached Figure Description

[0016] To more clearly illustrate the technical solutions in the embodiments of this application, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort, wherein: Figure 1 This is a flowchart illustrating the first embodiment of the power supply regulation method of this application; Figure 2 This is a schematic diagram of the first embodiment of the power conditioning circuit of this application; Figure 3 yes Figure 1 A flowchart illustrating an embodiment of S12; Figure 4 yes Figure 1 A flowchart of an embodiment of S15; Figure 5 This is a schematic diagram of the second embodiment of the power supply regulation circuit of this application; Figure 6 This is a flowchart illustrating the second embodiment of the power supply regulation method of this application; Figure 7 This is a flowchart illustrating the third embodiment of the power supply regulation method of this application; Figure 8This is a flowchart illustrating the fourth embodiment of the power supply regulation method of this application; Figure 9 This is a schematic diagram of the third embodiment of the power conditioning circuit of this application; Figure 10 This is a schematic diagram of one embodiment of the electronic device of this application. Detailed Implementation

[0017] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of them. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0018] The terms "first," "second," and "third" in this application are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined as "first," "second," or "third" may explicitly or implicitly include at least one of that feature. In the description of this application, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly specified. All directional indications (such as up, down, left, right, front, back, etc.) in the embodiments of this application are only used to explain the relative positional relationships and movements between components in a specific orientation (as shown in the figures). If the specific orientation changes, the directional indications also change accordingly. 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 device that includes a series of steps or units is not limited to the listed steps or units, but may optionally include steps or units not listed, or may optionally include other steps or units inherent to these processes, methods, products, or devices.

[0019] In this document, the term "implementation" means that a specific feature, structure, or characteristic described in connection with an implementation may be included in at least one implementation of this application. The appearance of this phrase in various places in the specification does not necessarily refer to the same implementation, nor is it a separate or alternative implementation mutually exclusive with other implementations. It will be explicitly and implicitly understood by those skilled in the art that the implementations described herein can be combined with other implementations.

[0020] The present application will now be described in detail with reference to the accompanying drawings and embodiments.

[0021] Please refer to the following: Figure 1 and Figure 2 ,in, Figure 1 This is a flowchart illustrating the first embodiment of the power supply regulation method of this application. Figure 2 This is a schematic diagram of the first embodiment of the power conditioning circuit of this application. Specifically, it may include the following steps: S11: Receive any number of first power inputs provided by at least two first power supply circuits respectively.

[0022] It is understood that the power regulation method in this embodiment is specifically applied to, for example... Figure 2 In the power regulation circuit 20 shown, the power regulation circuit 20 is used to couple with at least two first power supply circuits 101, such as first power supply circuit 1, first power supply circuit 2, ..., first power supply circuit n (n is a positive integer greater than 1), and a second power supply circuit 102; wherein, the power regulation circuit 20 uses the power regulation method of any of the present invention to regulate the first power input provided by each first power supply circuit 101.

[0023] In some embodiments, the first power supply circuit 101 and the second power supply circuit 102 may respectively correspond to any two of any reasonable power sources capable of providing AC or DC power input, such as grid power, photovoltaic power, battery, energy storage device, independent generator, wind power, etc., or a regulating and conversion circuit that obtains a specific AC or DC power output by utilizing the AC or DC power input of the power source. This application does not limit this.

[0024] It is worth noting that the term "coupled" in this article refers to any direct or indirect connection. Therefore, if the article describes a first circuit coupled to a second circuit, it means that the first circuit can be directly connected to the second circuit via electrical connection or signal connection methods such as wireless transmission or optical transmission, or indirectly connected to the second circuit via other circuits or connection methods via electrical connection or signal connection.

[0025] Specifically, the power conditioning circuit 20 is used to sample and obtain the first power input from any number of first power circuits 101 that have power input in at least two first power circuits 101 in real time. For example, when first power circuit 1 and first power circuit 2 have the first power input in first power circuit 1, first power circuit 2, first power circuit 3 and first power circuit 4, the first power input is sampled and obtained from first power circuit 1 and first power circuit 2 that have power input.

[0026] In some embodiments, the power conditioning circuit 20 may specifically obtain the input voltage and / or input current through a voltage transformer, voltage divider, current transformer, sampling resistor or other reasonable type of circuit unit; or, obtain the input voltage and / or input current and then convert it into a digital signal by an ADC (Analog to Digital Converter) for use by the power conditioning circuit 20. This application does not limit this.

[0027] S12: Convert each first power input into a first AC signal.

[0028] When the first power input is a DC signal, the full-bridge / half-bridge inverter (not shown in the figure) inside the power conditioning circuit 20 performs inverter regulation on each first power input to generate a high-frequency first AC signal; when the first power input is an AC signal, the active rectification + high-frequency inverter element (not shown in the figure) inside the power conditioning circuit 20 regenerates the controllable first AC signal to unify the energy form, which is convenient for subsequent magnetic coupling or synthesis.

[0029] S13: Generate each first control signal using the first error value between each first reference signal and each first power input.

[0030] Understandably, each first power supply circuit 101 has a first power input corresponding to a reference value, such as the desired inverter amplitude / frequency, the set input power of each channel, the power supply output requirements, etc., in order to fit the settings to obtain each first reference signal corresponding to each first power supply circuit 101.

[0031] Each first error value is obtained by subtracting the corresponding first power input from each first reference signal.

[0032] Specifically, the first error value can be either a voltage error value or a current error value. It can be obtained by performing proportional-integral (PI) or proportional-integral-derivative (PID) adjustment operations on each first error value using any reasonable control algorithm, such as a current loop feedback control algorithm or a voltage loop feedback control algorithm, to obtain a first control signal. In response to the dynamic changes of each first error value, the first control signal can be dynamically adjusted in real time, such as its duty cycle, phase shift angle, or frequency.

[0033] In some embodiments, the first control signal and other control signals herein may be one or more of any reasonable control signals such as PWM (Pulse Width Modulation) signal or PFM (Pulse Frequency Modulation) signal, and this application does not limit them.

[0034] S14: Adjust each first AC signal using each first control signal.

[0035] By using each first control signal to dynamically adjust the switching state of the switching circuit inside the power supply regulation circuit 20 in real time, the system can adjust each first AC signal, thereby improving the dynamic response of the system through feedforward + local feedback control.

[0036] S15: Convert each first AC signal into a second AC signal.

[0037] All the first AC signals can be combined into a second AC signal, for example, through magnetic coupling, so that each first AC signal drives the independent primary winding of the isolation transformer, and the secondary windings are naturally superimposed; or, multiple AC signals can be output in parallel through a resonant network to obtain a second AC signal, and the phase / frequency of the multiple AC signals can be synchronously adjusted using the first control signal.

[0038] S16: Convert the second AC signal into the first power supply output.

[0039] The second AC signal is rectified and filtered, or the voltage / current amplitude, phase, or frequency is adjusted to obtain the first power supply output.

[0040] S17: Generate a second control signal using the second error value between the second reference signal and the first power supply output.

[0041] Similarly, the first power output of each second power supply circuit 102 and / or other first power supply circuits 3 and 4 that do not have a first power input will also correspond to a reference value, such as the desired output voltage, output power, etc., to fit the setting to obtain the second reference signal.

[0042] The second error value is obtained by subtracting the first power supply output from the second reference signal.

[0043] Specifically, the first error value can be either a voltage error value or a current error value. It can be obtained by performing proportional-integral (PI) or proportional-integral-derivative (PID) adjustment operations on the second error value using any reasonable control algorithm, such as a current loop feedback control algorithm or a voltage loop feedback control algorithm, to obtain the second control signal. In response to the dynamic changes of each second error value, the duty cycle, phase shift angle, or frequency of the second control signal can be dynamically adjusted in real time.

[0044] S18: Regulate the output of the first power supply using the second control signal.

[0045] The switching state of the internal switching circuit (not shown in the figure) of the power conditioning circuit 20 is dynamically adjusted in real time using the second control signal to regulate the first power output, thereby improving the dynamic response and power supply stability of the system through feedback control.

[0046] S19: Provide the first power output to the second power circuit and / or other first power circuits that do not have a first power input.

[0047] The first power output is provided to the second power circuit 102, and / or other first power circuits 101 that do not have a first power input, such as any one or more of the first power circuits 3 and 4 that do not have a first power input, thereby supporting reverse power supply or inter-module energy sharing. This can be applied to any reasonable application scenario such as providing standby power to a faulty power module, transmitting power to off-grid nodes in a microgrid, and powering a shutdown control circuit in a shutdown state. This application does not limit this application.

[0048] The above scheme receives any number of first power inputs from at least two first power circuits 101, respectively, to power the second power circuit 102 and / or other first power circuits 101 without first power inputs using the first power circuits 101 with first power inputs. It also performs sampling feedback adjustment on the first power inputs and first power outputs, thereby effectively realizing power management with multiple power inputs, closed-loop feedback, and AC / DC hybrid conversion. It supports collaborative input of different power sources, parallel adjustment and synthesis of multiple independent first power inputs to output a high-precision, high-stability AC or DC power supply, and supports reverse power supply to passive loads or other power modules. Even when some power supplies fail, it can maintain derating operation without downtime, thus effectively ensuring power supply stability. Furthermore, the sampling feedback adjustment of the power inputs results in a more timely and effective response.

[0049] Furthermore, by adjusting the input quality at the front end and regulating the output accuracy at the back end, two-stage closed-loop control can be achieved; power can be flexibly allocated through master-slave, current sharing, and priority power supply strategies; it has the potential for bidirectional energy flow; and when some power inputs fail, the system can still operate at reduced capacity instead of crashing, providing high reliability redundancy.

[0050] Please continue reading. Figure 3 , Figure 3 yes Figure 1 A flowchart illustrating an embodiment of S12 is shown. In one embodiment, the power regulation method of this application, in addition to the above-described S11-S19, further includes some more specific steps. Specifically, S12 may further include the following steps: S121: Perform power factor correction processing on each first power input.

[0051] Specifically, when each of the first power supply circuits 101 is an AC power supply and each first power input is actually an AC input, the power adjustment circuit 20, after receiving each first power input, uses its internal power factor correction circuit (not shown) to perform power factor correction processing on each first power input.

[0052] It's worth noting that the core function of a power factor correction circuit is to optimize energy utilization efficiency and reduce grid harmonic pollution and line losses by improving the power factor. Essentially, it corrects input current distortion caused by nonlinear loads, bringing the ratio of active power to apparent power (power factor) closer to 1, thereby improving the overall performance of the power system.

[0053] S122: Convert each power factor correction processed first power input into a first AC signal.

[0054] Furthermore, dynamic drive control is achieved by controlling the switching state of the internal switching circuit of the power supply regulation circuit 20, so as to perform any reasonable adjustment and conversion such as inverter regulation, active rectification, amplitude regulation, etc. on each first power input after power factor correction to obtain each first AC signal.

[0055] Please continue reading. Figure 4 , Figure 4 yes Figure 1 A flowchart illustrating an embodiment of S15 is shown. In one embodiment, the power regulation method of this application, in addition to the above-described S11-S19, further includes some more specific steps. Specifically, S15 may further include the following steps: S151: Convert each first AC signal into each resonant current.

[0056] Please continue to refer to the diagram. Figure 5 , Figure 5 This is a schematic diagram of the second embodiment of the power regulation circuit of this application.

[0057] It is understood that the power supply regulation method in this embodiment can specifically be as follows: Figure 5 The power regulation circuit 30 shown regulates and controls the first power input provided by each first power circuit 101. The power regulation circuit 30 includes at least two first switching circuits 31, an isolation transformer 32, a second switching circuit 33, at least two first resonant circuits 34, at least two first sampling feedback circuits 35, a second sampling feedback circuit 36, and a drive control circuit (not shown). The isolation transformer 32 includes at least two mutually coupled first windings 321 and second windings 322.

[0058] Each first switching circuit 31 is coupled to each first power supply circuit 101; each first winding 321 is coupled to each first switching circuit 31; a second switching circuit 33 is coupled to a second winding 322 and is coupled to a second power supply circuit 102; each first resonant circuit 34 is coupled between each first switching circuit 31 and its corresponding first winding 321; each first sampling feedback circuit 35 is coupled to each first switching circuit 31 and is coupled to each first power supply circuit 101; a second sampling feedback circuit 36 ​​is coupled to a second switching circuit 33 and is coupled to a second power supply circuit 102; and a drive control circuit is coupled to each first switching circuit 31, the second switching circuit 33, each first sampling feedback circuit 35, and the second sampling feedback circuit 36.

[0059] For ease of understanding, taking the first switching circuit 31 specifically including first switching circuit 1, first switching circuit 2, and first switching circuit n as an example, then the first power supply circuit 101 includes first power supply circuit 1, first power supply circuit 2, and first power supply circuit n; the first sampling feedback circuit 35 includes first sampling feedback circuit 1, first sampling feedback circuit 2, and first sampling feedback circuit n; the first resonant circuit 34 includes first resonant circuit 1, first resonant circuit 2, and first resonant circuit n; and the first winding 321 includes first winding 1, first winding 2, and first winding n. The first sampling feedback circuit 1 is coupled to... The first switching circuit 1 is coupled to the first power supply circuit 1, the first switching circuit 1 is coupled to the first resonant circuit 1, and the first resonant circuit 1 is coupled to the first winding 1; the first sampling feedback circuit 2 is coupled to the first switching circuit 2, and is coupled to the first power supply circuit 2, the first switching circuit 2 is coupled to the first resonant circuit 2, and the first resonant circuit 2 is coupled to the first winding 2; and so on, the first sampling feedback circuit n is coupled to the first switching circuit n, and is coupled to the first power supply circuit n, the first switching circuit n is coupled to the first resonant circuit n, the first resonant circuit n is coupled to the first winding n, and is coupled to the first power supply circuit n, which will not be described in detail here.

[0060] Specifically, each first switching circuit 31 is used to receive a first power input provided by the corresponding first power supply circuit 101, so as to be controlled by the drive control circuit to change the switching state and convert the first power input into a first AC signal.

[0061] Each first resonant circuit 34 is used to control and adjust the amplitude and frequency of the first AC signal between each first switching circuit 31 and its corresponding first winding 321 at resonance, so as to obtain each resonant current.

[0062] Each of the first sampling feedback circuits 35 is further configured to receive the first power input provided by the first power supply circuit 101 and feed it back to the drive control circuit, so that the drive control circuit generates each first control signal using the first error value between each first reference signal and each first power input, and uses each first control signal to dynamically adjust each first AC signal in real time.

[0063] S152: Convert each resonant current into a second AC signal.

[0064] Each first winding 321 is used to receive the resonant current sent by the corresponding first resonant circuit 34, so as to couple it to the second winding 322 or other first windings 321 to obtain a second AC signal.

[0065] The second switching circuit 33 is used to receive the second AC signal sent by the second winding 322, so as to convert the second AC signal into a first power output to provide to the second power circuit 102; or other first switching circuits 31 that do not have a first power input are also used to receive the second AC signal sent by other first windings 321, so as to convert the second AC signal into a first power output to output to other first power circuits 101.

[0066] The second sampling feedback circuit 36 ​​is also used to receive the first power output sent by the second switching circuit 33 and feed it back to the drive control circuit; or, other first sampling feedback circuits 35 are also used to receive the first power output sent by the first switching circuit 31 and feed it back to the drive control circuit; the drive control circuit is also used to generate a second control signal using the second error value between the second reference signal and the first power output, and to use the second control signal to dynamically adjust the first power output in real time.

[0067] Please see Figure 6 , Figure 6 This is a flowchart illustrating the second embodiment of the power supply regulation method of this application. The power supply regulation method of this embodiment... Figure 1 A detailed implementation diagram of the power regulation method is shown, which specifically includes the following steps: S41: Receives any number of first power inputs provided by at least two first power supply circuits respectively.

[0068] S42: Convert each first power input into a first AC signal.

[0069] Among them, S41 and S52 and Figure 1 S11 and S12 are the same. Please refer to the textual descriptions of S11 and S12 for details, which will not be repeated here.

[0070] S43: Obtain the set output power of each first power supply circuit.

[0071] Understandably, different first power supply circuits 101 typically have different rated output power. When coordinating to supply power to the second power supply circuit 102 and / or other circuits where no first power supply circuit 101 exists, it is necessary to coordinate the output power of each circuit to meet the current power supply requirements.

[0072] Specifically, the drive control circuit is used to obtain the rated output power and current power supply requirements of each first power supply circuit 101 in order to set the set output power of each first power supply circuit 101.

[0073] S44: Set each first reference signal using each set output power.

[0074] Each first reference signal corresponding to each first power supply circuit 101 is obtained by fitting the set output power according to the current setting.

[0075] S45: Generate each first control signal using the first error value between each first reference signal and each first power input.

[0076] S46: Each first control signal is used to adjust each first AC signal.

[0077] S47: Convert each first AC signal into a second AC signal.

[0078] S48: Convert the second AC signal into the first power output.

[0079] S49: Generate a second control signal using the second error value between the second reference signal and the first power supply output.

[0080] S410: Regulates the output of the first power supply using the second control signal.

[0081] S411: Provide the first power output to the second power circuit and / or other first power circuits that do not have a first power input.

[0082] Among them, S45, S46, S47, S48, S49, S410 and S411 and Figure 1 S13, S14, S15, S16, S17, S18 and S19 are the same. For details, please refer to S13, S14, S15, S16, S17, S18 and S19 and their related textual descriptions. They will not be repeated here.

[0083] Furthermore, in some embodiments, the above-mentioned S43 and S44 can be replaced by: receiving each first reference signal sent by the host computer.

[0084] Understandably, the drive control circuit can also receive each first reference signal obtained by the host computer for specific operating conditions and power supply requirements of the second power supply circuit 102 and / or other circuits where the first power supply circuit 101 does not exist, and the rated output power of each first power supply circuit 101 obtained through experimental calibration or simulation optimization.

[0085] It's worth noting that a host computer typically refers to a computer system with powerful computing and data processing capabilities. It is responsible for monitoring the entire control system, issuing commands, acquiring data, processing and analyzing data, and facilitating user interaction. As the "brain" of the system, the host computer can handle complex algorithms, store long-term data, and provide a graphical user interface for operation.

[0086] A lower-level controller is a device or controller directly connected to hardware such as sensors and actuators in a control system. It is responsible for executing specific control commands issued by the upper-level controller, such as outputting switch signals, adjusting analog signals, and acquiring data. Lower-level controllers typically perform simple logical judgments and real-time control tasks.

[0087] Please see Figure 7 , Figure 7 This is a flowchart illustrating the third embodiment of the power supply regulation method of this application. The power supply regulation method of this embodiment... Figure 1 A detailed implementation diagram of the power regulation method is shown, which specifically includes the following steps: S51: Receives any number of first power inputs provided by at least two first power supply circuits respectively.

[0088] Among them, S41 and S52 and Figure 1 S11 and S12 are the same. Please refer to the textual descriptions of S11 and S12 for details, which will not be repeated here.

[0089] S52: Detect whether each first power input is within the set threshold range.

[0090] Understandably, when some of the first power supply circuits 101 malfunction, short circuit, or lose power, causing their first power input to be lower than or higher than the set threshold range under normal conditions, in order to avoid affecting the overall power supply stability, it is necessary to cut off the input of these first power supply circuits 101 in a timely manner, that is, to turn off the corresponding first switch circuits 31.

[0091] Specifically, the drive control circuit receives each first power input sent by each first sampling feedback circuit 35 to detect whether each first power input is within a set threshold range.

[0092] If there are first power inputs that are not all within the set threshold range, then S53 is executed; if each first power input is within the set threshold range, then S56 is executed.

[0093] S53: Turn off each first power input that is not within the set threshold range.

[0094] When it is determined that there is a first power input imbalance within a set threshold range, each first switch circuit 31 corresponding to the first power input will be triggered to shut down.

[0095] S54: Adjust each first power input that falls within the set threshold range.

[0096] Understandably, after the first power input of part of the first power circuit 101 is turned off, in order to ensure the stability of the output power, the output power of the first power circuit 101 that maintains normal operation needs to be adjusted. For example, when the second power circuit 102 is used as a power supply load and its required output power is 300W, if the input power of one of the first power circuits 101 that is used as a power supply is 200W and the other is 100W, then when the input of the other first power circuit 101 is turned off, the input power of the remaining first power circuit 101 that maintains normal operation needs to be adjusted to 300W, and the corresponding first power input will also be adjusted to a suitable range.

[0097] Specifically, the drive control circuit adjusts each first power input that is currently within a set threshold range and adjusts its corresponding set threshold range.

[0098] S55: Adjust each first reference signal corresponding to each first power input using the adjusted first power input.

[0099] Understandably, once the first power input is adjusted due to changes in input power, its target setpoint, which it aims to approach, will also be adjusted.

[0100] Specifically, in response to the adjusted voltage and / or current values ​​of each first power input, the corresponding first reference signal is adjusted.

[0101] S56: Convert each first power input into a first AC signal.

[0102] When it is determined that each first power input is within the set threshold range, no adjustment is made to each first power input, and each first power input is converted into a first AC signal.

[0103] S57: Generate each first control signal using the first error value between each first reference signal and each first power input.

[0104] Understandably, when the first power input is adjusted, the corresponding first reference signal will also be adjusted. Specifically, the drive control circuit generates each first control signal by using the first error value between each adjusted first reference signal and its corresponding adjusted first power input.

[0105] When each first reference signal is not adjusted, each first control signal is generated by using the first error value between each current first reference signal and its corresponding first power input.

[0106] S58: Each first control signal is used to adjust each first AC signal.

[0107] S59: Convert each first AC signal into a second AC signal.

[0108] S510: Converts the second AC signal into the first power output.

[0109] S511: Generate a second control signal using the second error value between the second reference signal and the first power supply output.

[0110] S512: Regulate the output of the first power supply using the second control signal.

[0111] S513: Provide the first power output to the second power circuit and / or other first power circuits that do not have a first power input.

[0112] Among them, S58, S59, S510, S511, S512 and S513 and Figure 1 S14, S15, S16, S17, S18 and S19 are the same. For details, please refer to S13, S14, S15, S16, S17, S18 and S19 and their related textual descriptions. They will not be repeated here.

[0113] Furthermore, in some embodiments, after S55 and before S511, the method specifically includes: adjusting the second reference signal using each of the adjusted first power inputs.

[0114] Understandably, in certain application scenarios, when a portion of the first power input is turned off, in order to adapt to the new power supply scenario, the second power circuit 102 and / or other first power circuit 101 without the first power input can further reduce their output power requirements, that is, adjust the control target of the first power output to adapt to the input power of the first power circuit 101 that still maintains the first power input.

[0115] Specifically, a second reference signal is obtained by fitting each adjusted first power input, that is, the previous second reference signal is adjusted.

[0116] Furthermore, in some embodiments, after S55 and before S511, the method specifically includes: adjusting the second reference signal using each of the adjusted first reference signals.

[0117] Understandably, after the input of part of the first power supply circuit 101 is turned off, each of the correspondingly adjusted first reference signals will also correspond to the change in the input power of the first power supply circuit 101 that still maintains the first power supply input. Therefore, a second reference signal can also be obtained by fitting and setting each adjusted first reference signal, that is, the previous second reference signal is adjusted.

[0118] Please see Figure 8 , Figure 8 This is a flowchart illustrating the fourth embodiment of the power supply regulation method of this application. The power supply regulation method of this embodiment specifically includes the following steps: S61: Receives the second power input provided by the second power supply circuit.

[0119] Please continue reading. Figure 9 , Figure 9 This is a schematic diagram of the third embodiment of the power supply regulation circuit of this application.

[0120] It is understood that the power supply regulation method in this embodiment can specifically be as follows: Figure 9 The power regulation circuit 70 shown regulates and controls the second power input provided by the second power circuit 102. The power regulation circuit 70 includes at least two first switching circuits 71, an isolation transformer 72, a second switching circuit 73, at least two first resonant circuits 74, at least two first sampling feedback circuits 75, a second sampling feedback circuit 76, and a drive control circuit (not shown). The isolation transformer 72 includes at least two mutually coupled first windings 721 (also labeled as first winding Rz1) and second windings 722 (also labeled as second winding Rz2). The first switching circuit 71 includes a first switch Q1, a second switch Q2, a third switch Q3, and a fourth switch Q4. The first sampling feedback circuit 75 includes a first resistor R1. The first resonant circuit 74 includes a resonant inductor Lr and a resonant capacitor Cr. The second switching circuit 73 includes a fifth switch Q5, a sixth switch Q6, a seventh switch Q7, and an eighth switch Q8. The second sampling feedback circuit 76 includes a second resistor R2.

[0121] In this circuit, the second terminal of the first switch Q1 is coupled to the second terminal of the second switch Q2 and is used to couple to the first terminal BUS+ of the first power supply circuit 101. The third terminal of the first switch Q1 is coupled to the second terminal of the third switch Q3 and the first terminal of the resonant capacitor Cr. The third terminal of the second switch Q2 is coupled to the second terminal of the fourth switch Q4 and the first terminal of the resonant inductor Lr. The third terminal of the third switch Q3 is coupled to the third terminal of the fourth switch Q4 and the first terminal of the first resistor R1. The second terminal of the first resistor R1 is used to couple to the second terminal of the first power supply circuit 101, i.e., the first ground terminal AGND. The second terminal of the resonant inductor Lr is coupled to the first terminal of the first winding Rz1. The second terminal of the first winding Rz1 is coupled to the second terminal of the resonant capacitor Cr. The first terminal of the second winding Rz2 is coupled to the fifth switch. The third terminal of Q5 and the second terminal of the seventh switch Q7, the second terminal of the second winding Rz2, the third terminal of the sixth switch Q6 and the second terminal of the eighth switch Q8, the second terminal of the fifth switch Q5 is coupled to the second terminal of the sixth switch Q6 and is used to couple to the first terminal of the second power supply circuit 102, the third terminal of the seventh switch Q7 is coupled to the third terminal of the eighth switch Q8 and the first terminal of the second resistor R2, the second terminal of the second resistor R2 is used to couple to the second terminal of the second power supply circuit 102, that is, the second ground terminal BGND, and the first terminal of each of the first switch Q1, the second switch Q2, the third switch Q3, the fourth switch Q4, the fifth switch Q5, the sixth switch Q6, the seventh switch Q7 and the eighth switch Q8 is coupled to the drive control circuit (not shown in the figure).

[0122] In some embodiments, the first switch Q1, the second switch Q2, the third switch Q3, the fourth switch Q4, the fifth switch Q5, the sixth switch Q6, the seventh switch Q7, and the eighth switch Q8 may be a MOSFET (Metal-Oxide Semiconductor Field Effect Transistor), a transistor, a thin-film transistor, a field-effect transistor, or any other reasonable switch, and this application does not limit them.

[0123] It is worth noting that, to distinguish the two ends of each of the above-mentioned switching transistors other than the control terminal, one terminal is referred to as the second terminal and the other as the third terminal. When each switch is a transistor, the control terminal, i.e., the first terminal, can specifically be the base, the second terminal as the collector, and the third terminal as the emitter; or, the first terminal can also specifically be the base, the second terminal as the emitter, and the third terminal as the collector.

[0124] When the switching transistors mentioned above are MOSFETs, thin-film transistors, or field-effect transistors, the first terminal can be the gate, the second terminal the drain, and the third terminal the source; or, the first terminal can be the gate, the second terminal the source, and the third terminal the drain.

[0125] In particular, when each switching transistor is a MOSFET, a thin film transistor, or a field-effect transistor, it can also be a composite transistor or a single transistor, which is not limited in this application.

[0126] It is understood that the first switching circuit 71 and the second switching circuit 73 actually correspond to full-bridge switching circuits; the first power supply circuit 101 specifically includes bus power supply BUS and photovoltaic power supply PV, and the second power supply circuit 102 is battery BAT, both of which correspond to DC power supply.

[0127] The power regulation circuit 70 will have at least two operating modes.

[0128] Operating mode 1: The photovoltaic power input (PV) and battery power input (BAT) can simultaneously power the bus power supply (BUS).

[0129] Operating mode 2: When charging the battery BAT, the bus power input BUS and the photovoltaic power input PV can charge the battery simultaneously through a bridge circuit.

[0130] The application of this topology can effectively reduce magnetic and power devices, thereby saving costs, improving efficiency, and enhancing power supply reliability.

[0131] In other embodiments, the first power supply circuit 101 and the second power supply circuit 102 may specifically be AC ​​power or other forms of DC power, or a regulating and converting circuit that uses the AC power or DC power input to obtain a specific AC or DC power output; the first switching circuit 71 and the second switching circuit 73 may specifically be half-bridge switching circuits; and the second switching circuit 73 may also be a full-bridge or half-bridge switching circuit composed of diodes; the number of the first switching circuits 71 may also be any reasonable number such as 3, 4 or 5; the first resonant circuit 74 may specifically be any other reasonable resonant topology circuit form, which is not limited in this application.

[0132] Specifically, the second switching circuit 73 is also used to receive a second power input provided by the second power supply circuit 102.

[0133] S62: Converts the second power input into a third AC signal.

[0134] The fifth switch Q5, the sixth switch Q6, the seventh switch Q7, and the eighth switch Q8 in the second switching circuit 73 are controlled by the drive control circuit to change their switching states so as to convert the second power input into a third AC signal.

[0135] S63: Generate a third control signal using the third error value between the third reference signal and the second power input.

[0136] Specifically, the drive control circuit can receive the second power input from the feedback output of the second resistor R2, and obtain a third reference signal by fitting and setting the current power supply requirements and input power, so as to subtract the second power input from the third reference signal to obtain a third error value.

[0137] The third error value can be either a voltage error value or a current error value. Any reasonable control algorithm, such as a current loop feedback control algorithm or a voltage loop feedback control algorithm, can be used to perform proportional-integral (PI) or proportional-integral-derivative (PID) adjustment operations on the third error value to obtain a third control signal. The duty cycle, phase shift angle, or frequency of the third control signal can be dynamically adjusted in real time in response to the dynamic changes of each third error value.

[0138] S64: Adjust the third AC signal using the third control signal.

[0139] The third control signal is sent to the fifth switch Q5, the sixth switch Q6, the seventh switch Q7, and the eighth switch Q8 respectively to trigger the fifth switch Q5, the sixth switch Q6, the seventh switch Q7, and the eighth switch Q8 to turn on or off, so as to dynamically adjust the third AC signal in real time.

[0140] S65: Convert the third AC signal into a preset number of fourth AC signals.

[0141] It is understood that when at least two first power supply circuits 101 serve as load terminals, a second power supply circuit 102 may also be used to supply power to at least a portion of the first power supply circuits 101, i.e., a preset number of first power supply circuits 101 less than or equal to the total number of first power supply circuits 101.

[0142] Specifically, the second winding Rz2 is used to receive the third AC signal sent by the second switching circuit 73, so as to couple it to a corresponding preset number of first windings Rz1 to obtain a fourth AC signal.

[0143] S66: Converts each fourth AC signal into each second power supply output.

[0144] Furthermore, each first switching circuit 71 is used to receive the fourth AC signal sent by the corresponding first winding Rz1 through the first resonant circuit 74, so as to be controlled by the drive control circuit to change the switching state, and to convert each fourth AC signal into each second power output.

[0145] S67: Generate each fourth control signal using the fourth error value between each fourth reference signal and each second power supply output.

[0146] Specifically, the drive control circuit can receive each second power output from the feedback output of each first resistor R1, and obtain each fourth reference signal by fitting and setting according to the current power supply requirements and input power, so as to subtract the corresponding second power input from each fourth reference signal to obtain the fourth error value.

[0147] The fourth error value can be either a voltage error value or a current error value. Any reasonable control algorithm, such as a current loop feedback control algorithm or a voltage loop feedback control algorithm, can be used to perform proportional-integral (PI) or proportional-integral-derivative (PID) adjustment operations on the fourth error value to obtain the fourth control signal. In response to the dynamic changes of each fourth error value, the duty cycle, phase shift angle, or frequency of the fourth control signal can be dynamically adjusted in real time.

[0148] S68: Each fourth control signal is used to adjust the output of each second power supply.

[0149] Each fourth control signal is sent to the first switch Q1, second switch Q2, third switch Q3 and fourth switch Q4 in each first switch circuit 71 respectively, to trigger the first switch Q1, second switch Q2, third switch Q3 and fourth switch Q4 to turn on or off, so as to dynamically adjust each second power supply output in real time.

[0150] S69: Output each second power supply output to each first power supply circuit respectively.

[0151] Each of the currently obtained second power supply outputs is output to each of the first power supply circuits 101.

[0152] This application also provides an electronic device, please refer to... Figure 10 , Figure 10 This is a schematic diagram of one embodiment of the electronic device of this application. In this embodiment, the electronic device 80 includes a housing 81 and a power regulation circuit 82 connected to the housing 81.

[0153] It should be noted that the power conditioning circuit 82 described in this embodiment is any of the power conditioning circuits 20, 30, or 70 described in the above embodiments. Please refer to [link / reference] for details. Figures 1-9 The relevant textual content will not be elaborated upon here.

[0154] The beneficial effects of this application are as follows: Unlike the prior art, the power regulation method provided by this application receives any number of first power inputs provided by at least two first power circuits respectively, so as to use the first power circuit with the first power input to supply power to the second power circuit and / or other first power circuits without the first power input, and performs sampling feedback regulation on the first power input and the first power output, thereby effectively realizing power management with multiple power inputs, closed-loop feedback, and AC / DC hybrid conversion. It supports different power inputs working together, performs parallel regulation and synthesis on multiple independent first power inputs to output a high-precision, high-stability AC or DC power supply, and supports reverse power supply to passive loads or other power modules. It can still maintain derating operation without downtime when some power supplies fail, thereby effectively ensuring power supply stability. Moreover, the response speed is more timely and effective due to the sampling feedback regulation of the power input.

[0155] The above description is merely an embodiment of this application and does not limit the patent scope of this application. Any equivalent structural or procedural transformations made using the content of this application's specification and drawings, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of this application.

Claims

1. A power supply regulation method, characterized in that, The power supply regulation method includes: Receives any number of first power inputs provided by at least two first power circuits; Each of the first power inputs is converted into a first AC signal; Each first control signal is generated using the first error value between each first reference signal and each first power input; Each of the first control signals is used to adjust each of the first AC signals; Convert each of the first AC signals into a second AC signal; The second AC signal is converted into a first power output; A second control signal is generated using the second error value between the second reference signal and the first power supply output; The output of the first power supply is adjusted using the second control signal; The first power output is provided to the second power circuit and / or other first power circuits that do not have the first power input.

2. The power supply regulation method according to claim 1, characterized in that, Before the step of generating each first control signal using the first error value between each first reference signal and each first power input, the method further includes: Obtain the set output power of each of the first power supply circuits; Each of the first reference signals is set using the set output power of each of the aforementioned signals; Alternatively, receive each of the first reference signals sent by the host computer.

3. The power supply regulation method according to claim 1, characterized in that, After the step of receiving any number of first power inputs provided by at least two first power circuits respectively, and before the step of converting each first power input into each first AC signal respectively, the method further includes: Detect whether each of the first power inputs is within a set threshold range; If any of the first power inputs is not within the set threshold range, then each of the first power inputs that is not within the set threshold range will be turned off.

4. The power supply regulation method according to claim 3, characterized in that, Before the step of generating each first control signal using the first error value between each first reference signal and each first power input, the method further includes: Adjustment is applied to each of the first power inputs that falls within the set threshold range; Each first reference signal is adjusted using each adjusted first power input.

5. The power supply regulation method according to claim 4, characterized in that, Before the step of generating the second control signal using the second error value between the second reference signal and the first power supply output, the method further includes: The second reference signal is adjusted using each of the adjusted first power inputs; Alternatively, the second reference signal can be adjusted using each of the adjusted first reference signals.

6. The power supply regulation method according to claim 1, characterized in that, The step of converting each of the first AC signal into a second AC signal includes: Each of the first AC signals is converted into a resonant current; Each of the resonant currents is converted into the second AC signal.

7. The power supply regulation method according to any one of claims 1-6, characterized in that, The step of converting each of the first power inputs into each of the first AC signals includes: Perform power factor correction processing on each of the first power inputs; Each of the first power inputs after power factor correction is converted into a first AC signal.

8. The power supply regulation method according to any one of claims 1-6, characterized in that, The power supply regulation method further includes: Receives the second power input provided by the second power circuit; Convert the second power input into a third AC signal; A third control signal is generated using the third error value between the third reference signal and the second power input; The third AC signal is adjusted using the third control signal; The third AC signal is converted into a preset number of fourth AC signals; Each of the fourth AC signals is converted into each of the second power supply outputs; Each fourth control signal is generated using the fourth error value between each fourth reference signal and each second power supply output; Each of the fourth control signals is used to adjust the output of each of the second power supplies. Each of the second power supply outputs is output to each of the first power supply circuits.

9. A power supply regulation circuit, characterized in that, The power regulation circuit is used to couple with at least two first power supply circuits and a second power supply circuit. The power supply regulation circuit uses the power supply regulation method as described in any one of claims 1-8 to regulate the first power input provided by each of the first power supply circuits.

10. An electronic device, characterized in that, The electronic device includes a housing and a power regulation circuit connected to the housing; The power regulation circuit is the power regulation circuit as described in claim 9.

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