Detailed Description
The following description of the embodiments of the present application will be made clearly and fully with reference to the accompanying drawings, in which it is evident that the embodiments described are only some, but not all embodiments of the application. All other embodiments, which can be made by those skilled in the art based on the embodiments of the present application without making any inventive effort, are intended to fall within the scope of the present application.
The terms "first," "second," "third," and the like in this disclosure are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first", "a second", and "a third" may explicitly or implicitly include at least one such feature. In the description of the present application, the meaning of "plurality" means at least two, for example, two, three, etc., unless specifically defined otherwise. All directional indications (such as up, down, left, right, front, rear) in the embodiments of the present application are merely used to explain the relative positional relationship, movement conditions, etc. between the components in a certain specific posture (as shown in the drawings), and if the specific posture is changed, the directional indication is changed accordingly. Furthermore, the terms "comprise" and "have," as well as any variations thereof, are intended to cover a non-exclusive inclusion. For example, a process, method, system, article, or apparatus that comprises a list of steps or elements is not limited to only those listed steps or elements but may include other steps or elements not listed or inherent to such process, method, article, or apparatus.
Reference herein to "an embodiment" means that a particular feature, structure, or characteristic described in connection with the embodiment may be included in at least one embodiment of the application. The appearances of such phrases in various places in the specification are not necessarily all referring to the same embodiment, nor are separate or alternative embodiments mutually exclusive of other embodiments. Those skilled in the art will explicitly and implicitly understand that the embodiments described herein may be combined with other embodiments.
The present application will be described in detail with reference to the drawings and embodiments.
Referring to fig. 1, fig. 1 is a schematic diagram of a power supply adjusting circuit according to a first embodiment of the application. In this embodiment, the first power supply adjusting circuit 10 specifically includes a first tank circuit 11, a first power switch circuit 12, a first dc blocking circuit 13, a first isolation transformer 14, a first rectifying circuit 15, and a first main control circuit 16.
The first power supply adjusting circuit 10 provided by the application is particularly applied to electronic equipment with power supply adjusting and converting requirements, such as a direct current charging pile, a photovoltaic charging device and a mobile energy storage device, so as to receive the input of an external power supply and perform voltage conversion on the power supply input, thereby meeting the requirements of signal functions such as charging and energy storage. Of course, in other embodiments, the first power supply adjusting circuit 10 may be specifically provided in any other reasonable electronic device such as an industrial robot or an unmanned aerial vehicle, which is not limited in this embodiment.
Specifically, the first tank circuit 11 is configured to be coupled to an external power circuit 101, to receive a power input signal from the power circuit 101, and to charge and store energy by using the power input signal, or to discharge and release energy to obtain an energy storage current signal.
It should be noted that, the power supply circuit 101 may be a battery with a dc output, a dc voltage stabilizer, a photovoltaic power supply, an energy storage power supply, or any reasonable dc or ac power supply such as a grid power supply, a photovoltaic power supply, an independent generator, or any other reasonable upper power supply, or may be the first power supply adjusting circuit 10 that receives and performs power conversion and adjustment on the grid power supply, the photovoltaic power supply, the independent generator, or any other reasonable upper power supply to obtain a dc or ac power supply output, which is not limited in this embodiment.
In addition, "coupled" herein is meant to include any direct or indirect connection. Thus, if a first circuit is coupled to a second circuit, it is intended that the first circuit be directly connected to the second circuit by an electrical connection or a signal connection such as wireless transmission, optical transmission, or the like, or be indirectly connected to the second circuit electrically or by other circuits or connection means.
The first power switch circuit 12 is coupled to the first tank circuit 11, the first dc blocking circuit 13 is further coupled to the first power switch circuit 12, and the first power switch circuit 12 is configured to receive the stored current signal sent by the first tank circuit 11, and utilize an internal switching mechanism, such as an on/off mechanism of a switching device, such as an IGBT (Insulated Gate Bipolar Transistor ), a high-frequency Transistor, a MOS (Metal Oxide Semiconductor FIELD EFFECT Transistor, a metal oxide semiconductor field effect Transistor), and the like, to perform voltage regulation and conversion on the stored current signal in cooperation with the first dc blocking circuit 13 under the action of a driving control signal.
The first isolation transformer 14 specifically further includes a first primary winding 141 and a first secondary winding 142, where the first primary winding 141 is coupled to the first power switch circuit 12 and the first dc blocking circuit 13, and is coupled to the first secondary winding 142, so as to realize an electrical isolation and voltage matching function, and separate circuits on both sides of the primary and secondary sides, so as to avoid a great amount of harmonic pollution caused by the power circuit 101, and simultaneously, enable the first primary winding 141 and the first dc blocking circuit 13 to resonate.
The first rectifying circuit 15 specifically further includes a first rectifying switch sub-circuit 151 and a first rectifying energy storing sub-circuit 152, where the first rectifying switch sub-circuit 151 is coupled to the first secondary winding 142 and the first rectifying energy storing sub-circuit 152, so as to receive an induced electrical signal obtained by coupling the first secondary winding 142 and the first primary winding 141, and cooperate with the first rectifying energy storing sub-circuit 152 to perform charging energy storing, or perform discharging energy releasing to rectify the induced electrical signal to obtain a power output signal for providing to a back-end signal circuit.
The back-end signal circuit may be a load circuit that operates by using the power supply output signal, or may be a lower-level circuit that uses the power supply output signal to realize any reasonable signal function such as current conversion and frequency adjustment.
The first main control circuit 16 is coupled to the first tank circuit 11 and the first power switch circuit 12, and the first main control circuit 16 is configured to obtain an input voltage and a tank current signal of a power input signal from the first tank circuit 11, so as to generate a driving control signal according to the input voltage and the tank current signal, for example, according to the characteristics that the input voltage is in positive and negative half cycles, the tank current signal is reduced from positive to zero or from negative to zero, and whether the tank current signal is smaller than a set current threshold, and the like, so as to generate the driving control signal correspondingly.
The first power switch circuit 12 is specifically configured to receive a driving control signal sent by the first main control circuit 16, and change a switch state in response to the driving control signal, for example, trigger a switching device therein to be turned on or off, so as to regulate the energy storage current signal.
And when the stored current signal in the first energy storage circuit 11 increases, the first dc blocking circuit 13 resonates with the first primary winding 141 through the first power switch circuit 12 in the current switch state, that is, in the switch state in which the stored current signal starts to increase, and when the stored current signal gradually decreases, the induced voltage obtained by coupling the first secondary winding 142 and the first primary winding 141 stores energy in the first rectifying switch sub-circuit 151 to obtain a power supply output signal.
According to the scheme, the power supply regulation control is realized by using the first main control circuit 16, and the first primary winding 141 and the first secondary winding 142 are used for carrying out corresponding resonance and coupling along with the magnitude of the energy storage current signal, so that electric isolation and electric energy transmission are effectively realized, the power supply requirement is met, the device configuration and the occupied space are effectively simplified, the circuit control mode is simplified, the reliability and the efficiency of drive control are improved, and the technical threshold is reduced.
In some embodiments, the driving control signal may be one or more of any reasonable control signal, such as PWM (Pulse Width Modulation ) signal or PFM (Pulse Frequency Modulation, pulse frequency modulation) signal, which is not limited in this application.
In some embodiments, the first master circuit 16 may specifically include one of a control chip, an MCU (Micro Controller Unit, micro control unit) circuit, a CPU (Central Processing Unit ), a single chip microcomputer, a field programmable gate array, a programmable logic device, a discrete gate or transistor logic device, discrete hardware, and any reasonable circuit unit with a signal processing function, which is not limited in this disclosure.
Referring to fig. 2, fig. 2 is a schematic diagram of a power supply adjusting circuit according to a second embodiment of the application. The power supply adjusting circuit in this embodiment is different from the first embodiment of the power supply adjusting circuit provided by the present application in that the second power switch circuit 22 in the second power supply adjusting circuit 20 specifically further includes a second example first power switch sub-circuit 221, a second example second power switch sub-circuit 222, a second example first switch sub-circuit 223, and a second example second switch sub-circuit 224.
Specifically, the second example first power switch sub-circuit 221 is coupled to the second tank circuit 21, the second example second power switch sub-circuit 222, the second example first switch sub-circuit 223, and the second main control circuit 26, the second example second power switch sub-circuit 222 is coupled to the second example second switch sub-circuit 224 and the second main control circuit 26, the second example first switch sub-circuit 223 is coupled to the second example second switch sub-circuit 224, the second dc blocking circuit 23, and the second example second switch sub-circuit 224 is coupled to the second primary winding 241 of the second isolation transformer 24.
With continued reference to fig. 3, fig. 3 is a schematic diagram of waveforms of signals corresponding to the power supply adjusting circuit in fig. 2.
It can be understood that the driving control signal further includes a first control signal PWM1 and a second control signal PWM2, and the power input signal is specifically an ac input signal, that is, the waveform of the input voltage Vin of the power input signal corresponds to a sine wave, and the energy storage current signal IL is also correspondingly an ac signal, and the signal frequency thereof is greater than the signal frequency of the power input signal.
The second main control circuit 26 is specifically configured to adjust and set the first control signal PWM1 to a first level when the input voltage Vin of the power input signal is a forward voltage, that is, the input voltage Vin is in a positive half cycle, and adjust the second control signal PWM2 to the first level in response to the stored current signal IL in the second energy storage circuit 21 passing through zero from the forward direction, that is, reducing the forward current to zero, and then adjust the second control signal PWM2 to the second level from the first level when the stored current signal IL gradually increases to be greater than or equal to the set current threshold.
The second main control circuit 26 is further configured to adjust and set the second control signal PWM2 to a first level when the input voltage Vin is a negative voltage, that is, the input voltage Vin is in a positive half cycle, and adjust the first control signal PWM1 to the first level when the energy storage current signal IL increases from a negative zero crossing, that is, from a negative current to zero, and adjust the first control signal PWM1 to the second level when the energy storage current signal IL gradually increases to be greater than or equal to a set current threshold.
The second example first power switch sub-circuit 221 is specifically configured to receive the first control signal PWM1 to trigger on when the first control signal PWM1 is at a first level and to trigger off when the first control signal PWM1 is at a second level, and the second example second power switch sub-circuit 222 is configured to receive the second control signal PWM2 to trigger on when the second control signal PWM2 is at the first level and to trigger off when the second control signal PWM2 is at the second level.
From this, it can be seen that, when the input voltage Vin is in the positive half cycle, the second example first power switch sub-circuit 221 will keep on continuously, when the tank current signal IL on the second tank circuit 21 decreases from the forward current to zero, the second example second power switch sub-circuit 222 triggers on, at this time, the input voltage Vin will charge the second tank circuit 21 through the second example second power switch sub-circuit 222 and the second example second switch sub-circuit 224, the tank current signal IL will start to increase, and at the same time, the second dc blocking circuit 23 and the second primary winding 241 will start to resonate through the second example first power switch sub-circuit 221 and the second example second power switch sub-circuit 222, and when the current of the tank current signal IL increases to be greater than or equal to the set current threshold, the second example second power switch sub-circuit 222 triggers off, the second tank circuit 21 will continue to charge the second tank circuit 21 through the second example first power switch sub-circuit 221, the second dc blocking circuit 23, the second primary winding 241 and the second secondary switch sub-circuit 57, and the second secondary rectifier circuit 57 will start to charge the second secondary rectifier circuit 252 through the second secondary rectifier circuitL.
Similarly, when the input voltage Vin is in the negative half cycle, the second power switch sub-circuit 222 of the second example keeps on continuously, when the tank current signal IL on the second tank circuit 21 decreases from the forward current to zero, the first power switch sub-circuit 221 of the second example triggers on, at this time, the input voltage Vin charges the second tank circuit 21 through the first power switch sub-circuit 221 of the second example and the first switch sub-circuit 223 of the second example, the tank current signal IL starts to increase, and at the same time, the second dc blocking circuit 23 and the second primary winding 241 start to resonate through the first power switch sub-circuit 221 of the second example and the second power switch sub-circuit 222 of the second example, and when the current of the tank current signal IL increases to be greater than or equal to the set current threshold, the first power switch sub-circuit 221 of the second example triggers off, the second tank circuit 21 continues to charge the second tank circuit 21 through the second power switch sub-circuit 222 of the second example, the second dc blocking circuit 23, the second primary winding 241 and the first switch sub-circuit 223, and the second secondary windingL gradually decreases, and the tank current signal I is rectified through the second dc blocking circuit 23 and the second secondary windingL starts to obtain the rectified voltage signal I.
In one embodiment, the second example first switching sub-circuit 223 specifically includes a first switching tube (not shown), the second example second switching sub-circuit 224 includes a second switching tube (not shown), and the second rectifying switching sub-circuit 251 includes a third switching tube (not shown), where the first switching tube and the second switching tube are the same type and are both three-electrode switching tubes or diodes, and the third switching tube is a three-electrode switching tube or diode.
Further, in some embodiments, the three-electrode switching transistor may be specifically one of any reasonable switching devices such as a MOS transistor, a high-frequency transistor, a triode, a thyristor, an IGBT, and the like, which is not limited in the present application.
The first end of the three-electrode switching tube is correspondingly a control end, so that when the first end of the three-electrode switching tube receives a corresponding driving control signal, the second end and the third end of the three-electrode switching tube are triggered to be turned on or off under the action of the driving control signal.
In an embodiment, the first switching tube and the second switching tube may be three-electrode switching tubes, the driving control signal specifically further includes a third control signal and a fourth control signal, that is, the second main control circuit 26 is further configured to generate the third control signal and the fourth control signal by using the input voltage Vin and the stored current signal IL of the power input signal, and specifically adjust the third control signal to the second level and the fourth control signal to the first level when the input voltage Vin is a positive voltage, and adjust the third control signal to the first level and the fourth control signal to the second level when the input voltage Vin is a negative voltage.
The first switch tube is used for receiving a third control signal to trigger on when the third control signal is at a first level and to trigger off when the third control signal is at a second level, and the second switch tube is used for receiving a fourth control signal to trigger on when the fourth control signal is at the first level and to trigger off when the fourth control signal is at the second level.
It can be seen that, when the input voltage Vin is in the positive half cycle, the first switching tube will be kept turned off continuously, and the second switching tube will be kept turned on continuously, so as to charge the second tank circuit 21 in cooperation with the switching actions of the second example first power switching sub-circuit 221 and the second example second power switching sub-circuit 222, or resonate the second blocking circuit 23 and the second primary winding 241, or cause the second tank circuit 21 to continue to freewheel through the second blocking circuit 23, the second primary winding 241 and the second example second switching sub-circuit 224, and at the same time, the induced voltage on the second secondary winding 242 starts to charge the second rectifying and tank circuit 252 through the second rectifying switching sub-circuit 251.
When the input voltage Vin is in the negative half cycle, the second switching tube will be kept turned off continuously, and the first switching tube will be kept turned on continuously, so as to charge the second tank circuit 21 with the input voltage Vin in cooperation with the switching actions of the second example first power switch sub-circuit 221 and the second example second power switch sub-circuit 222, or resonate the second dc blocking circuit 23 with the second primary winding 241, or enable the second tank circuit 21 to continue to freewheel through the second dc blocking circuit 23, the second primary winding 241 and the second example second switch sub-circuit 224, and simultaneously the induced voltage on the second secondary winding 242 starts to charge the second rectifying tank circuit 252 through the second rectifying switch sub-circuit 251.
It is understood that the efficiency of the second power supply regulating circuit 20 is effectively improved when the first and second switching transistors are replaced by three-electrode switching transistors, as compared with the first and second switching transistors.
In an embodiment, the third switching tube may be a three-electrode switching tube, the driving control signal specifically further includes a fifth control signal, the second main control circuit 26 is further configured to generate the fifth control signal by using the first control signal PWM1 and the second control signal PWM2 correspondingly, and specifically, when the input voltage Vin of the power input signal is a positive voltage, the fifth control signal is adjusted to be in phase with the second control signal PWM2, that is, the second control signal PWM2 is duplicated to obtain the fifth control signal in a positive half cycle of the input voltage Vin, so that the fifth control signal is identical to the second control signal PWM2, and when the input voltage Vin is a negative voltage, the fifth control signal is adjusted to be in phase with the first control signal PWM1, that is, even if the fifth control signal is identical to the first control signal PWM1.
Referring to fig. 4, fig. 4 is a schematic structural diagram of a power supply adjusting circuit according to a third embodiment of the application. The power supply adjusting circuit in this embodiment is different from the second embodiment of the power supply adjusting circuit provided by the present application in that the third tank circuit 31 in the third power supply adjusting circuit 30 specifically includes a tank inductance Lr.
Specifically, the third example first power switch sub-circuit 321 in the third power switch circuit 32 includes a first power switch tube QG1, the third example second power switch sub-circuit 322 includes a second power switch tube QG2, the third example first switch sub-circuit 323 includes a first switch tube Q1, the third example second switch sub-circuit 324 includes a second switch tube Q2, the third blocking circuit 33 includes a first capacitor C1, the third rectifying switch sub-circuit 351 in the third rectifying circuit 35 includes a third switch tube Q3, and the third rectifying tank sub-circuit 352 includes a second capacitor C2.
The first end of the storage inductor Lr is coupled to the first end of the power circuit 101, the second end of the storage inductor Lr is coupled to the second end of the first power switch tube QG1 and the third end of the second power switch tube QG2, the third end of the first power switch tube QG1 is coupled to the second end of the first switch tube Q1 and the first end of the first capacitor C1, the first end of the first switch tube Q1 is coupled to the second end of the second switch tube Q2 and is used to be coupled to the second end of the power circuit 101, the second end of the first capacitor C1 is coupled to the first end of the third primary winding 341 in the third isolation transformer 34, the second end of the second power switch tube QG2 is coupled to the first end of the second switch tube Q2 and the second end of the third primary winding 341, the first end of the third secondary winding 342 is coupled to the first end of the third switch tube Q3, the second end of the third switch tube Q3 is coupled to the second end of the second capacitor C2 and is used to be coupled to the second end of the second secondary winding 342 and is used to be coupled to the second end of the second secondary winding C.
In some embodiments, the first power switch tube QG1 and the third second power switch subcircuit 322 may be any reasonable switching device, such as a MOS tube, a high-frequency transistor, an IGBT, or the like, which is not limited in the present application.
In some embodiments, the third rectifying switch sub-circuit 351 may be a half-bridge or full-bridge rectifying conversion circuit formed by diodes or three-electrode switching tubes, which is determined by an actual application scenario, and the present application is not limited thereto.
In some embodiments, the third main control circuit 36 may specifically further include a third current sampling sub-circuit 361, a third voltage sampling sub-circuit 362, and a third control sub-circuit 363, where the third current sampling sub-circuit 361 is coupled to the third tank circuit 31 and the third control sub-circuit 363, and is configured to sample and obtain a tank current signal IL from the third tank circuit 31, filter the tank current signal IL, and output the tank current signal IL to the third control sub-circuit 363, and the third voltage sampling sub-circuit 362 is coupled to the third tank circuit 31 and the third control sub-circuit 363, and is configured to sample and obtain an input voltage Vin of a power input signal from the third tank circuit 31, filter the input voltage Vin, and output the input voltage Vin to the third control sub-circuit 363, and the third control sub-circuit 363 is configured to generate a driving control signal by using the input voltage Vin and the tank current signal IL.
In an embodiment, the third rectifying and tank sub-circuit 352 further includes an output resistor Ro, wherein a first end of the output resistor Ro is coupled to a first end of the second capacitor C2, and a second end of the output resistor Ro is coupled to a second end of the second capacitor C2, so as to cooperate with the second capacitor C2 to output the stable power output signal Vo to the back-end signal circuit.
Referring to fig. 5, fig. 5 is a schematic diagram of a power supply adjusting circuit according to a fourth embodiment of the application. The power supply adjusting circuit in this embodiment is different from the third embodiment of the power supply adjusting circuit provided by the present application in that the number of the fourth isolation transformers 44 in the fourth power supply adjusting circuit 40 is at least two.
The first end of each fourth primary winding 441 is coupled to the fourth dc blocking circuit 43, the second end of each fourth primary winding 441 is coupled to the fourth second switching sub-circuit 424, and each fourth secondary winding 442 is sequentially connected in series and coupled to the fourth rectifying switch sub-circuit 451 and the fourth rectifying energy storage sub-circuit 452, so that the application range of the power supply output signal Vo can be effectively widened by connecting each fourth primary winding 441 in parallel and each fourth secondary winding 442 in series, and the output voltage of the power supply output signal Vo can be doubled under the condition that the output current is the same.
In other embodiments, the first end of each of the fourth primary windings 441 in the at least two fourth isolation transformers 44 may be specifically coupled to the fourth dc blocking circuit 43, the second end of each of the fourth primary windings 441 is coupled to the fourth second switching sub-circuit 424, and each of the fourth primary windings 441 is sequentially connected in series and is coupled to the fourth dc blocking circuit 43 and the fourth second switching sub-circuit 424, so that each of the fourth primary windings 441 is connected in parallel, and each of the fourth secondary windings 442 is also connected in parallel, so that the output current of the fourth power regulating circuit 40 is doubled under the condition that the output voltages of the power supply output signals Vo are the same, and the charging efficiency of the corresponding load is improved, thereby effectively widening the application range thereof.
It is worth noting that both series and parallel are one way of connecting circuit elements. 1. And the series circuit is a circuit formed by connecting circuit elements (such as a resistor, a capacitor, an inductor, electric appliances and the like) one by one in sequence and connecting the electric appliances in series. 2. Parallel circuit, a connection mode in which 2 similar or dissimilar elements, devices and the like are connected end to end and end to end is also connected, is usually used to refer to a connection mode of electronic elements in a circuit.
It is to be understood that the fourth tank circuit 41, the fourth power switch circuit 42, the fourth first power switch sub-circuit 421, the fourth second power switch sub-circuit 422, the fourth first switch sub-circuit 423, the fourth second switch sub-circuit 424, the fourth dc blocking circuit 43, the fourth rectifying circuit 45, the fourth rectifying switch sub-circuit 451, the fourth rectifying tank circuit 452, the fourth master control circuit 46, the fourth current sampling sub-circuit 461, the fourth voltage sampling sub-circuit 462, and the fourth control sub-circuit 463 in this embodiment are respectively identical to the third tank circuit 31, the third power switch sub-circuit 32, the third first power switch sub-circuit 321, the third second power switch sub-circuit 322, the third first switch sub-circuit 323, the third second switch sub-circuit 324, the third dc blocking circuit 33, the third rectifying circuit 35, the third rectifying switch sub-circuit 351, the third rectifying tank circuit 352, the third master control circuit 361, the third current sampling sub-circuit 363, and the third control sub-circuit 363 in this embodiment are not specifically described herein.
Referring to fig. 6, fig. 6 is a schematic structural diagram of a fifth embodiment of the power supply adjusting circuit according to the present application. The power supply adjusting circuit in this embodiment is different from the third embodiment of the power supply adjusting circuit provided by the present application in that the number of the fifth dc blocking circuits 53, the fifth isolation transformers 54, and the fifth rectifying circuits 55 in the fifth power supply adjusting circuit 50 is equal to at least two.
The first end of each fifth dc blocking circuit 53 is coupled to the first switch sub-circuit 523 of the fifth example, the second end of each fifth dc blocking circuit 53 is coupled to the first end of each fifth primary winding 541, the second end of each fifth primary winding 541 is coupled to the second switch sub-circuit 524 of the fifth example, and the first end of each fifth secondary winding 542 is coupled to the first end of one fifth rectifying switch sub-circuit 551, the second end of each fifth secondary winding 542 is coupled to each other and to the second end of each fifth rectifying switch sub-circuit 552, the second end of each fifth rectifying switch sub-circuit 551 is coupled to each other and to the first end of each fifth rectifying switch sub-circuit 552, so that each fifth primary winding 541 is connected in parallel through each fifth dc blocking circuit 53, each fifth secondary winding 542 is also connected in parallel through each fifth rectifying switch sub-circuit 551, and is connected in parallel with each fifth rectifying switch sub-circuit 552, the output voltage of each fifth rectifying switch sub-circuit 551 is increased by the same factor, and the output voltage of the fifth rectifying switch sub-circuit is increased by the voltage, and the output stability of the fifth rectifying switch sub-circuits can be increased, and the power supply circuit can be adjusted by the fifth power source 50.
In other embodiments, each of the fifth secondary windings 542 and each of the fifth rectifying switch sub-circuits 551 may be serially connected in sequence and coupled to each of the fifth rectifying tank sub-circuits 552, so that each of the fifth primary windings 541 is connected in parallel through each of the fifth blocking circuits 53, and each of the fifth secondary windings 542 is serially connected through each of the fifth rectifying switch sub-circuits 551 and connected in parallel with each of the fifth rectifying tank sub-circuits 552, and the output voltage of the fifth rectifying switch sub-circuits 551 is doubled when the output current of the power output signal Vo is the same, so as to improve the output power of the fifth power supply adjusting circuit 50 and the charging efficiency of the corresponding load, and the power supply stability and reliability of the fifth power supply adjusting circuit 50 are effectively improved by using each of the fifth blocking circuits 53, the fifth rectifying switch sub-circuits 551 and the fifth rectifying tank sub-circuits 552, so that the application range of the fifth rectifying switch sub-circuits can be effectively widened.
It can be understood that the fifth tank circuit 51, the fifth power switch circuit 52, the fifth first power switch sub-circuit 521, the fifth second power switch sub-circuit 522, the fifth first switch sub-circuit 523, the fifth second switch sub-circuit 524, the fifth main control circuit 56, the fifth current sampling sub-circuit 561, the fifth voltage sampling sub-circuit 562 and the fifth control sub-circuit 563 are the same as the fourth tank circuit 41, the fourth power switch circuit 42, the fourth first power switch sub-circuit 421, the fourth second power switch sub-circuit 422, the fourth first switch sub-circuit 423, the fourth second switch sub-circuit 424, the fourth main control circuit 46, the fourth current sampling sub-circuit 461, the fourth voltage sampling sub-circuit 462 and the fourth control sub-circuit 463 in the present embodiment, respectively, and detailed descriptions thereof will be omitted herein.
Referring to fig. 7, fig. 7 is a schematic flow chart of a first embodiment of the power supply adjusting method according to the present application. Specifically, the method may include the steps of:
S61, receiving a power input signal sent by a power circuit.
It can be understood that the power supply adjusting method in this embodiment is specifically a method in which the power supply adjusting circuit receives a power supply input signal sent by an external power supply circuit, so as to adjust and control the power supply input signal. The power supply regulating circuit specifically comprises an energy storage circuit, a power switch circuit, a direct current blocking circuit, an isolation transformer, a rectifying circuit and a main control circuit, wherein the isolation transformer comprises a primary side winding and a secondary side winding, the rectifying circuit comprises a rectifying switch sub-circuit and a rectifying energy storage sub-circuit, the energy storage circuit is used for being coupled with the power circuit, the power switch circuit is coupled with the energy storage circuit, the direct current blocking circuit is coupled with the power switch circuit, the primary side winding is coupled with the power switch circuit and the direct current blocking circuit and is coupled with the secondary side winding, the rectifying switch sub-circuit is coupled with the secondary side winding and the rectifying energy storage sub-circuit, and the main control circuit is coupled with the energy storage circuit and the power switch circuit.
It should be noted that the ac power supply may be understood as a power supply system ac power supply, or a power supply regulating circuit that performs power conversion and regulation on the power supply system ac power supply to obtain an ac power supply output.
Specifically, the tank circuit receives a power input signal from an external ac power source, i.e., a power supply circuit.
And S62, utilizing the power input signal to adjust and obtain an energy storage current signal.
The energy storage circuit utilizes the power input signal to charge and store energy or discharge and release energy to obtain an energy storage current signal.
And S63, generating a driving control signal by using the input voltage of the power input signal and the stored energy current signal.
The main control circuit is used for acquiring an input voltage and an energy storage current signal of a power input signal from the energy storage circuit so as to generate a driving control signal by utilizing the input voltage and the energy storage current signal, for example, the driving control signal is correspondingly generated according to the characteristics that the input voltage is in positive and negative half cycles, the energy storage current signal is reduced from positive to zero or from negative to zero, and whether the energy storage current signal is smaller than a set current threshold value or not.
And S64, adjusting the energy storage current signal by using the driving control signal.
The power switch circuit is specifically configured to receive a driving control signal sent by the main control circuit, and change a switch state in response to the driving control signal, for example, trigger a switch device in the power switch circuit to be turned on or off so as to regulate an energy storage current signal.
When the energy storage current signal in the energy storage circuit is increased, the blocking circuit resonates with the primary winding through the power switch circuit in the current switch state, namely the switch state in which the energy storage current signal starts to be increased; when the energy storage current signal is gradually reduced, the induced voltage obtained by coupling the secondary winding and the primary winding is subjected to energy storage on the rectifying energy storage sub-circuit through the rectifying switch sub-circuit, so that a power supply output signal is obtained.
It should be understood that, in some other embodiments, the power supply adjusting circuit specifically further includes some other more specific circuit units, so that other more specific power supply adjusting methods can be correspondingly implemented, and detailed descriptions will be omitted herein with reference to fig. 1-6 and related text.
Referring to fig. 8, fig. 8 is a schematic diagram of a power conversion circuit according to an embodiment of the present application. In this embodiment, the power conversion circuit 70 includes at least two sixth power adjustment circuits 71, and the output terminals of each of the sixth power adjustment circuits 71 are sequentially connected in series or in parallel.
In some embodiments, the master control circuits (not shown) in each of the sixth power supply adjusting circuits 71 may be the same, i.e. share one, or may be a plurality of independent control circuits, and the phases of the driving control signals corresponding to the master control circuits sent to the power switch circuits (not shown) are the same, or the phases are different, so as to eliminate the voltage and current ripple in each of the sixth power supply adjusting circuits 71 in an interleaving manner, which is not limited in the present application.
It should be noted that the sixth power supply adjusting circuit 71 described in this embodiment is the first power supply adjusting circuit 10, the second power supply adjusting circuit 20, the third power supply adjusting circuit 30, the fourth power supply adjusting circuit 40 or the fifth power supply adjusting circuit 50 described in any of the above embodiments, and detailed descriptions thereof will be omitted herein with reference to fig. 1-6.
The present application particularly further employs an electronic device, referring to fig. 9, and fig. 9 is a schematic structural diagram of an embodiment of the electronic device according to the present application. In the present embodiment, the electronic device 80 includes a housing 81 and a functional integrated circuit 82 connected to the housing 81.
Optionally, the electronic device 80 may specifically be any reasonable power supply device such as a charging pile, a photovoltaic charging device, an energy storage device, or an industrial manufacturing device, which is not limited in the present application.
It should be noted that the functional integrated circuit 82 described in this embodiment is the first power supply adjusting circuit 10, the second power supply adjusting circuit 20, the third power supply adjusting circuit 30, the fourth power supply adjusting circuit 40 or the fifth power supply adjusting circuit 50, or the power supply converting circuit 70 described in any of the above embodiments, and detailed descriptions thereof will be omitted herein.
The power supply regulating circuit has the advantages that the power supply regulating circuit is different from the prior art, the energy storage circuit is used for receiving and utilizing a power supply input signal to obtain an energy storage current signal, the main control circuit is used for obtaining and utilizing the input voltage of the power supply input signal and the energy storage current signal to generate a driving control signal, the power switch circuit is used for receiving and responding to the driving control signal to regulate the energy storage current signal, when the energy storage current signal is increased, the direct-current blocking circuit and the primary winding resonate through the power switch circuit, and when the energy storage current signal is reduced, the induced voltage obtained by coupling the secondary winding and the primary winding stores energy for the rectifying energy storage sub-circuit, so that the main control circuit can be effectively utilized to realize power supply regulating control, and the primary winding and the secondary winding can be correspondingly resonated and coupled to effectively realize electric isolation and electric energy transfer according to the size of the energy storage current signal, so as to meet the power supply requirement, the device configuration and the occupied space are effectively simplified, the circuit control mode is simplified, the driving control reliability and efficiency are improved, and the technology threshold is reduced.
The foregoing description is only of embodiments of the present application, and is not intended to limit the scope of the application, and all equivalent structures or equivalent processes using the descriptions and the drawings of the present application or directly or indirectly applied to other related technical fields are included in the scope of the present application.