WO2023185086A1 - 电流控制电路、电能提供装置、设备、控制方法和装置 - Google Patents

电流控制电路、电能提供装置、设备、控制方法和装置 Download PDF

Info

Publication number
WO2023185086A1
WO2023185086A1 PCT/CN2022/137923 CN2022137923W WO2023185086A1 WO 2023185086 A1 WO2023185086 A1 WO 2023185086A1 CN 2022137923 W CN2022137923 W CN 2022137923W WO 2023185086 A1 WO2023185086 A1 WO 2023185086A1
Authority
WO
WIPO (PCT)
Prior art keywords
current
voltage
circuit
output
conversion circuit
Prior art date
Application number
PCT/CN2022/137923
Other languages
English (en)
French (fr)
Inventor
郭红光
张晨松
张锦
李建国
纪策
田晨
张加亮
Original Assignee
Oppo广东移动通信有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Oppo广东移动通信有限公司 filed Critical Oppo广东移动通信有限公司
Publication of WO2023185086A1 publication Critical patent/WO2023185086A1/zh

Links

Images

Classifications

    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
    • H02M1/00—Details of apparatus for conversion
    • H02M1/08—Circuits specially adapted for the generation of control voltages for semiconductor devices incorporated in static converters
    • H02M1/081—Circuits specially adapted for the generation of control voltages for semiconductor devices incorporated in static converters wherein the phase of the control voltage is adjustable with reference to the AC source
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
    • H02M3/00—Conversion of dc power input into dc power output
    • H02M3/02—Conversion of dc power input into dc power output without intermediate conversion into ac
    • H02M3/04—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters

Definitions

  • the present application relates to the field of charging technology, and more specifically, to a current control circuit, a power supply device, equipment, a control method and a device.
  • Direct Current-Direct Current (DC-DC) circuit refers to a circuit that converts DC voltage of a certain voltage level into DC voltage of other voltage levels.
  • DC-DC circuit connected to the vehicle DC power supply converts high-voltage DC power into low-voltage DC power.
  • the existing DC-DC circuit processes the input voltage, thereby stabilizing the output voltage of the DC-DC circuit at a constant value, or stabilizing the output current of the DC-DC circuit at a constant value.
  • the present application discloses a current control circuit, power supply device, equipment, control method and device, which can cause the output current to change accordingly as the input voltage changes.
  • embodiments of the present application provide a current control circuit, including:
  • a conversion circuit used to convert the input voltage and output it
  • a control circuit configured to control the output current of the conversion circuit to a preset current based on a reference voltage and the output voltage of the conversion circuit; the reference voltage is determined based on the input voltage, and the waveform of the preset current changes as the waveform of the input voltage changes.
  • an embodiment of the present application provides a power supply device, including the current control circuit provided in any embodiment of the first aspect.
  • an embodiment of the present application provides an electronic device, including the current control circuit provided in any embodiment of the first aspect.
  • embodiments of the present application provide a current control method, which method includes:
  • the changed output current is controlled to be a preset current according to the reference voltage and the converted output voltage; the reference voltage is determined based on the input voltage, and the waveform of the preset current changes with the waveform of the input voltage. And change.
  • a current control device which includes:
  • the conversion module is used to convert the input voltage and output it
  • a control module configured to control the changed output current to a preset current according to the reference voltage and the converted output voltage; the reference voltage is determined based on the input voltage, and the waveform of the preset current changes with the input changes in the voltage waveform.
  • embodiments of the present application provide an electronic device, including a memory and a processor.
  • a computer program is stored in the memory.
  • the processor causes the processor to execute the embodiment in the fourth aspect.
  • embodiments of the present application provide a computer-readable storage medium on which a computer program is stored.
  • the computer program is executed by a processor, the method steps provided by the embodiments in the fourth aspect are implemented.
  • embodiments of the present application provide a computer program product, including a computer program that, when executed by a processor, implements the method steps provided by the embodiments in the fourth aspect.
  • the current control circuit includes a conversion circuit and a control circuit, wherein the conversion circuit converts the input voltage. Output, the control circuit controls the output current of the conversion circuit to be a preset current according to the reference voltage and the output voltage of the conversion circuit. Since the reference voltage is determined based on the input voltage of the conversion circuit, it can be based on the reference voltage and the output of the conversion circuit.
  • the control conversion circuit outputs the preset current, so that the waveform of the preset current can change positively with the waveform of the input voltage, or the waveform of the preset current can change reversely with the waveform of the input voltage, thereby achieving the following:
  • the output current of the conversion circuit also changes accordingly, so that the final output current of the conversion circuit changes correspondingly with the change of the input voltage.
  • Figure 1 is a schematic diagram of the working state parameter curve of the DCDC converter in one embodiment
  • Figure 2 is a schematic diagram of the working state parameter curve of the DCDC converter in another embodiment
  • Figure 3 is a schematic diagram of the working state parameter curve of the DCDC converter in another embodiment
  • Figure 4 is a schematic diagram of the working state parameter curve of the DCDC converter in another embodiment
  • Figure 5 is a schematic structural diagram of a current control circuit in an embodiment
  • Figure 6 is a schematic diagram of the waveform of the input voltage of the conversion circuit and the waveform change of the output current of the conversion circuit in one embodiment
  • Figure 7 is a schematic diagram of the waveform changes of the input voltage of the conversion circuit and the waveform change of the output current of the conversion circuit in another embodiment
  • Figure 8 is a schematic structural diagram of a current control circuit in another embodiment
  • Figure 9 is a schematic diagram of a non-inverting amplifier circuit in an embodiment
  • Figure 10 is a schematic diagram of an inverting amplifier circuit in one embodiment.
  • Figure 11 is a schematic structural diagram of a current control circuit in another embodiment
  • Figure 12 is a schematic structural diagram of a current control circuit in another embodiment
  • Figure 13 is a schematic diagram of the internal structure of an electronic device in one embodiment
  • Figure 14 is a schematic flow chart of a current control method in one embodiment
  • Figure 15 is a structural block diagram of a current control device in one embodiment
  • Control circuit 201: Operational amplifier circuit
  • first, second, etc. used in this application may be used herein to describe various elements, but these elements are not limited by these terms. These terms are only used to distinguish one element from another element.
  • a first client may be referred to as a second client, and similarly, the second client may be referred to as a first client, without departing from the scope of the present application.
  • the first client and the second client are both clients, but they are not the same client.
  • connection and “connection” mentioned in this application include direct and indirect connections (connections) unless otherwise specified. In the description of the present application, it should be understood that the orientation or positional relationship indicated by directional words such as “upper”, “lower”, etc.
  • a first feature being "on” or “below” a second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediary. touch.
  • differences in names are not used as a way to distinguish components, but differences in functions of the components are used as a principle for distinguishing.
  • DC-to-DC (Direct Current-Direct Current, DCDC) power supply solutions are usually in output voltage stabilization mode or output constant current mode, which makes the applicable scenarios for DCDC converters in related technologies very single and inflexible.
  • the load can be CC (constant current load) or CR (constant resistance load).
  • CC constant current load
  • CR constant resistance load
  • these two load modes are equivalent in this case. of.
  • the load can be CV (constant voltage load) or CR (constant resistance load), and these two load modes are also equivalent.
  • the DCDC converter operates with unregulated input, regulated output, and is connected to a CC (CR) load
  • the input voltage/current and output voltage/current variation curves are shown in Figure 3.
  • the output voltage/current does not change with the input voltage/current and is always at a fixed value.
  • the input current changes with the input voltage/current. The voltage changes in the opposite direction.
  • the input voltage/current and output voltage/current variation curves are shown in Figure 4.
  • the schematic diagram of the input voltage/current and output voltage/current change curves in Figure 4 in this case it is the same as the situation shown in Figure 3 above.
  • the output voltage/current does not change with the input voltage/current and is always at a fixed value. , at the same time, the input current changes inversely with the input voltage.
  • the horizontal axis represents time t
  • the left vertical axis represents voltage
  • the right vertical axis represents current
  • the output voltage or current of the DCDC converter is not affected by the input voltage, that is, there is no correlation between the output power and the input voltage.
  • This also causes the DCDC converter in the related art to be inapplicable in some scenarios where the input voltage is unregulated and the output power needs to be adjusted according to changes in the input voltage. For example, taking solar power panels as an example, weather conditions will cause insufficient power generation from the solar power panels, which will cause the input voltage of the DCDC converter to suddenly drop. At this time, it is necessary to reduce the output power of the DCDC converter to avoid including the DCDC converter. Some system circuits in the product are damaged. However, in this scenario, because the mode of the DCDC converter in the related technology is regulated output or constant current output, it cannot realize the function of reducing the output power when the input voltage decreases, which makes the related technology in this scenario The DCDC converter in cannot be applied.
  • the embodiment of the present application proposes a control method that introduces the output voltage of the conversion circuit into the control loop, so that the output current of the conversion circuit changes with the change of the input voltage (for example, a positive correlation change or a negative correlation change ).
  • the present application provides a current control circuit 01.
  • the current control circuit 01 includes: a conversion circuit 10, used to convert the input voltage and output; a control circuit 20, used according to The reference voltage and the output voltage of the conversion circuit control the output current of the conversion circuit to be a preset current; the reference voltage is determined based on the input voltage, and the waveform of the preset current changes with the change of the waveform of the input voltage.
  • the conversion circuit 10 can realize the conversion of voltage or current, for example, it can increase the current or reduce the current, increase the voltage or reduce the voltage, etc., and can be applied in boost, buck, buck-boost and other types of circuits.
  • the DC-DC converter means converting direct current of a certain current level into direct current of another current level.
  • the embodiments of this application are not limited to the internal circuit structure and specific conversion process of the DC-DC converter, as long as it can convert DC power of a certain current level into DC power of other current levels.
  • the DC-DC converter has a minimum operating voltage.
  • the DC-DC converter will stop working, that is, when the input voltage is less than the DC-DC converter At the lowest operating voltage, the output current of the DC-DC converter is 0. Therefore, in the embodiment of the present application, the input voltage of the conversion circuit 10 is greater than the lowest operating voltage of the DC-DC converter. That is, when the input voltage of the DC-DC converter is greater than the lowest operating voltage of the DC-DC converter, the control circuit 20 According to the reference voltage and the output voltage of the conversion circuit 10, the waveform of the output current of the conversion circuit 10 can be controlled to change with the change of the waveform of the input voltage.
  • the above control circuit 20 can be integrated with the DC-DC converter.
  • the control circuit 20 can be integrated inside the DC-DC converter.
  • the physical quantity that causes the change of the conversion circuit 10 in this embodiment is the input voltage of the conversion circuit 10, and the control circuit 20 converts the input voltage.
  • the waveform of the output current of the conversion circuit 10 can be controlled to change following the waveform of the input voltage, and the output voltage of the conversion circuit will produce a changing voltage drop due to changes in the current on the constant voltage load, causing the output voltage to fluctuate, thus affecting the conversion.
  • the output power of circuit 10 has an impact.
  • Vload 8V
  • Rcable 100m ⁇
  • Vload is the voltage value corresponding to the constant voltage load connected to the conversion circuit 10
  • Rcable is the resistance value corresponding to the constant voltage load connected to the conversion circuit 10.
  • the output current Iout of the conversion circuit 10 is also larger.
  • the input of the conversion circuit 10 is The current Iin is also larger; when the input voltage Vin of the conversion circuit 10 is smaller, the output current Iout of the conversion circuit 10 is also smaller, and the input current Iin of the conversion circuit 10 is also smaller.
  • the above-mentioned reference voltage may be a value determined according to the input voltage of the conversion circuit 10 .
  • the control circuit 20 can control the waveform of the output current of the conversion circuit 10 to change in direct correlation with the waveform of the input voltage according to the reference voltage and the output voltage of the conversion circuit 10.
  • the control circuit 20 can control The output current of the conversion circuit 10 increases as the input voltage increases, or the output current of the conversion circuit 10 can be controlled to decrease as the input voltage decreases.
  • the control circuit 20 can control the waveform of the output current of the conversion circuit 10 to change in a negative correlation with the waveform of the input voltage according to the reference voltage and the output voltage of the conversion circuit 10.
  • the output current of the conversion circuit 10 decreases as the input voltage increases, or the output current of the conversion circuit 10 can be controlled to increase as the input voltage decreases.
  • the current control circuit provided by the embodiment of the present application can be used in scenarios such as photovoltaic systems and solar charging units that require output power control based on input voltage.
  • control circuit 20 can control the output current of the conversion circuit 10 to be the above-mentioned preset current through an analog circuit, or can control the output current of the conversion circuit 10 to be the above-mentioned preset current through a digital circuit.
  • control circuit 20 may be a specially configured circuit for controlling the output current of the conversion circuit 10 , or may be a control circuit in the device where the multiplexed current control circuit is located. This embodiment is not limited here.
  • control circuit 20 may include components such as operational amplifiers and comparators.
  • the control circuit 20 may calculate Components such as amplifiers and comparators process the above-mentioned reference voltage and the output voltage of the conversion circuit 10 to generate a voltage or current signal, and adjust the output current of the conversion circuit 10 through the generated voltage or current signal, so that the conversion circuit 10
  • the output current is the preset current mentioned above.
  • control circuit 20 may include a central processing unit (Central Processing Unit, CPU) or a digital signal processor. (Digital Signal Processing, DSP), Field Programmable Gate Array (FPGA), microcontroller, etc.
  • CPU Central Processing Unit
  • DSP Digital Signal Processing
  • FPGA Field Programmable Gate Array
  • the control circuit 20 can communicate with the conversion circuit 10. Therefore, the control circuit 20 can communicate according to the above The reference voltage and the output voltage of the conversion circuit 20 send an adjustment signal to the conversion circuit 10, and the output current of the conversion circuit 10 is adjusted through the adjustment signal, so that the conversion circuit 10 outputs the above-mentioned preset current.
  • the control circuit 20 can control the conversion circuit according to the reference voltage and the output voltage of the conversion circuit 10 The output current of 10 changes greatly with the input voltage.
  • the waveform of the input voltage of the conversion circuit 10 and the waveform change diagram of the output current of the conversion circuit 10 can be shown in Figure 6; or, the control circuit 20
  • the output current of the conversion circuit 10 can also be controlled to change slightly with the input voltage based on the reference voltage and the output voltage of the conversion circuit 10.
  • the waveform of the input voltage of the conversion circuit 10 is the same as the waveform of the output current of the conversion circuit 10.
  • the waveform change diagram can be shown in Figure 7.
  • control circuit controls the output current of the conversion circuit to a preset current based on the reference voltage and the output voltage of the conversion circuit. According to the relationship between the voltage, current and resistance, when the resistance and When the voltage value is determined, the current value can also be determined. As an optional implementation, in some scenarios, the control circuit can also control the output current of the conversion circuit to the above preset value based on the reference current and the output current of the conversion circuit. current.
  • the above-mentioned current control circuit includes a conversion circuit and a control circuit.
  • the conversion circuit converts the input voltage and outputs it.
  • the control circuit controls the output current of the conversion circuit to be a preset current according to the reference voltage and the output voltage of the above-mentioned conversion circuit.
  • the conversion circuit can be controlled to output the preset current according to the reference voltage and the output voltage of the conversion circuit, so that the waveform of the preset current can change positively with the waveform of the input voltage, or, The waveform of the preset current can change inversely with the waveform of the input voltage, thereby realizing that as the input voltage of the conversion circuit changes, the output current of the conversion circuit also changes accordingly, so that the final output current of the conversion circuit changes with the input Changes accordingly as the voltage changes.
  • the above-mentioned charging circuit 01 also includes: a feedback circuit 30; the feedback circuit 30 is used to collect the input voltage and generate a reference voltage according to the input voltage.
  • the feedback circuit 30 is connected to the input terminal of the conversion circuit 10 and the input terminal of the control circuit 20 respectively.
  • the feedback circuit 30 can collect the input voltage of the conversion circuit 10 and generate the above reference voltage according to the collected input voltage.
  • the feedback circuit 30 can determine the above-mentioned reference voltage according to the corresponding functional relationship between the input voltage and the reference voltage.
  • the relationship between the above-mentioned reference voltage and the input voltage of the conversion circuit 10 may be a linear relationship or a non-linear relationship.
  • the feedback circuit 30 may be a digital circuit or an analog circuit.
  • the feedback circuit 30 may include a non-inverting amplification circuit, or may include an inverting amplification circuit.
  • the non-inverting amplifying circuit can generate a first reference voltage that is directly related to the input voltage according to the above-mentioned input voltage. It can be understood that, in the case where the feedback circuit 30 includes a non-inverting amplifier circuit, since the generated first reference voltage is positively correlated with the input voltage, the control circuit 20 controls the conversion according to the reference voltage and the output voltage of the conversion circuit 10 The waveform of the output current of the circuit 10 will change positively with the waveform of the input voltage.
  • FIG. 9 is a schematic diagram of a non-inverting amplifier circuit included in the feedback circuit 30 in one embodiment. It should be noted that the non-inverting amplifier circuit in FIG.
  • the schematic diagram of the amplifying circuit is a most basic non-inverting amplifying circuit.
  • the non-inverting amplifying circuit in this embodiment can be adjusted and modified on the circuit diagram shown in Figure 9.
  • the embodiment of the present application does not limit the specific structure of the non-inverting amplifying circuit here. , as long as the first reference voltage that is positively correlated with the input voltage can be generated according to the input voltage of the conversion circuit 10 .
  • the inverting amplifier circuit can generate a second reference voltage that is negatively correlated with the input voltage according to the above-mentioned input voltage. It can be understood that, in the case where the feedback circuit 30 includes an inverting amplification circuit, since the generated second reference voltage is negatively correlated with the input voltage, the control circuit 20 can, based on the reference voltage and the output voltage of the conversion circuit 10, The waveform of the output current of the control conversion circuit 10 will change inversely with the waveform of the input voltage.
  • Figure 10 is a schematic diagram of an inverting amplifier circuit included in the feedback circuit 30 in one embodiment.
  • Figure 10 The schematic diagram of the inverting amplification circuit in is the most basic inverting amplification circuit.
  • the inverting amplification circuit in this embodiment can be adjusted and modified on the circuit diagram schematically shown in Figure 10.
  • the inverting amplification circuit is The specific structure of the circuit is not limited, as long as it can generate a second reference voltage that is negatively correlated with the input voltage according to the input voltage of the conversion circuit 10 .
  • the current control circuit also includes a feedback circuit, which can collect the input voltage of the conversion circuit and generate a reference voltage according to the input voltage of the conversion circuit, because the reference voltage generated by the feedback circuit is based on the input voltage of the conversion circuit. generated, which in turn allows the control circuit to control the output current of the conversion circuit to a preset current based on the generated reference voltage and the output voltage of the conversion circuit, thereby realizing that as the input voltage of the conversion circuit changes, the output current of the conversion circuit also changes With the changes, the final output current of the conversion circuit changes accordingly as the input voltage changes.
  • a feedback circuit which can collect the input voltage of the conversion circuit and generate a reference voltage according to the input voltage of the conversion circuit, because the reference voltage generated by the feedback circuit is based on the input voltage of the conversion circuit. generated, which in turn allows the control circuit to control the output current of the conversion circuit to a preset current based on the generated reference voltage and the output voltage of the conversion circuit, thereby realizing that as the input voltage of the conversion circuit changes, the output current of
  • control circuit 20 controls the output current of the conversion circuit 10 to be the preset current
  • control circuit 30 can control the conversion circuit 10 to output the preset current by adjusting the duty cycle of the control signal.
  • the above-mentioned control circuit 20 is used to adjust the duty cycle of the control signal according to the reference voltage and the output voltage of the conversion circuit 10 to control the output current of the conversion circuit 10 to a preset current.
  • the duty cycle of the control signal refers to the percentage of the time that the conversion circuit 10 is turned on to the entire circuit working cycle.
  • the control circuit 20 adjusts the duty cycle of the control signal, that is, the conversion circuit 10
  • the percentage of the turned-on time in the entire circuit working cycle the output current of the conversion circuit 10 can change accordingly according to the power-on time of the conversion circuit 10 within a pulse cycle, so that the output current of the conversion circuit 10 can be adjusted. adjust.
  • control circuit 20 can increase the duty cycle of the control signal according to the above reference voltage and the output voltage of the conversion circuit 10 to control the output current of the conversion circuit 10 to be the above preset current, or , the control circuit 20 can reduce the duty cycle of the control signal according to the above-mentioned reference voltage and the output voltage of the conversion circuit 10 to control the output current of the conversion circuit 10 to be the above-mentioned preset current.
  • the preset circuit output by the conversion circuit is obtained by the control circuit adjusting the duty cycle of the control signal according to the reference voltage and the output voltage of the conversion circuit.
  • the conversion circuit can be modified.
  • the output current can be flexibly adjusted, so that the output current of the conversion circuit can meet a wider range of application scenarios.
  • the above-mentioned control circuit 20 includes: an operational amplifier circuit 201; the operational amplifier circuit 201 is used to generate a voltage difference according to the reference voltage and the output voltage of the conversion circuit 10. Through the voltage difference The output current of the conversion circuit 10 is controlled to be a preset current.
  • the controlled object in this application is the output current of the conversion circuit 10, and the controlled input quantity is the input voltage of the conversion circuit 10.
  • the corresponding relationship between the two can be realized through the corresponding hardware circuit, that is, the output current of the conversion circuit 10 It can be controlled by the voltage value generated by the control circuit 20 .
  • the operational amplifier circuit 201 included in the control circuit 20 can calculate the above-mentioned reference voltage and the output voltage of the conversion circuit 10, and increase the calculated signal to obtain the voltage difference, through which The output current of the voltage difference control conversion circuit 10 is the above-mentioned preset current.
  • the operational amplifier circuit 201 can increase the duty cycle of the control signal when the voltage difference is greater than the preset threshold to control the output current of the conversion circuit 10 to be the preset current; operation The amplifier circuit 202 can reduce the duty cycle of the control signal when the voltage difference is less than or equal to the preset threshold to control the output circuit of the conversion circuit 10 to be the preset current.
  • the operational amplifier circuit 201 can increase the duty cycle of the control signal to control the output current of the conversion circuit 10 as The above-mentioned preset current; when the voltage difference generated by the above-mentioned reference voltage and the output voltage of the conversion circuit 10 is 0.4V, and the voltage difference is less than the preset threshold, the operational amplifier circuit 201 can reduce the duty cycle of the control signal to control the above-mentioned The output current of the conversion circuit 10 is the above-mentioned preset current.
  • the operational amplifier circuit 202 controls the conversion circuit 10 to output the preset current by reducing the duty cycle of the control signal. However, at this time, the operational amplifier circuit 202 The adjustment value of the duty cycle of the control signal is 0.
  • the operational amplifier circuit of the control circuit can generate a voltage difference according to the reference voltage and the output voltage of the conversion circuit, so that the output current of the conversion circuit 10 can be controlled to be a preset current according to the voltage difference. That is to say, the operational amplifier circuit can The output current of the conversion circuit is flexibly adjusted according to the reference voltage and the output voltage of the conversion circuit, so that the output current of the conversion circuit can change with changes in the input voltage, so that the output current of the conversion circuit can meet a wider range of application scenarios. .
  • the above-mentioned current control circuit 01 also includes: a sampling circuit 40; the sampling circuit 40 is used to collect the output voltage of the conversion circuit 10.
  • control circuit 20 controls the output current of the conversion circuit 10 to be a preset current, it needs to control the output current of the conversion circuit 10 according to the reference voltage and the output voltage of the conversion circuit 10. Therefore, the output current of the conversion circuit 10 can be controlled by sampling.
  • the circuit 40 obtains the output voltage of the conversion circuit 10 and transmits the output voltage of the conversion circuit 10 to the control circuit 20 .
  • the above-mentioned sampling circuit 40 may include a resistor 401 and an operational amplifier 402, wherein the inverting input terminal of the operational amplifier 402 is connected to the first terminal of the resistor 401; the non-inverting input terminal of the operational amplifier 402 is connected to The second end of the resistor 401 is connected; the common end formed by the inverting input end of the operational amplifier 402 and the first end of the resistor 401 is connected to the output end of the above-mentioned conversion circuit 10, and the output end of the operational amplifier 402 is connected to the above-mentioned control circuit 20,
  • the operational amplifier 402 obtains the output voltage of the conversion circuit 10 by collecting the voltage at both ends of the resistor 401, and then transmits the collected output voltage of the conversion circuit 10 to the control circuit 20 through the output terminal of the operational amplifier 402, so that the control circuit 20 can control the circuit 20 according to the reference value. voltage and the output voltage of the conversion circuit 10 to adjust the output current of the conversion circuit 10 .
  • the output voltage of the conversion circuit can be accurately collected through the sampling circuit in the current control circuit, so that the control circuit can adjust the output of the conversion circuit based on the output voltage and reference voltage of the conversion circuit collected by the sampling circuit.
  • the current is accurately adjusted to ensure the accuracy of the adjustment of the output current of the conversion circuit.
  • the control circuit 20 may send a control signal to the conversion circuit 10 to control the output current of the conversion circuit 10 to control the output current of the conversion circuit 10
  • the above-mentioned control circuit 20 includes: a digital filter 202; the digital filter 202 is used to generate a control signal according to the reference voltage and the output voltage of the conversion circuit 10, and control the conversion circuit 10 through the control signal.
  • the output current is the preset current.
  • a digital circuit can be used to implement the functions of the control circuit 20.
  • a digital filter 202 with a data operation function is used to perform the functions of the above control module.
  • the digital filter 202 can calculate the input reference
  • the voltage and the output voltage of the conversion circuit 10 are subjected to arithmetic processing to generate a control signal.
  • the digital filter 202 can transmit the generated control signal to the conversion circuit 10, and use the control signal to control the output current of the conversion circuit 10 to be a preset current.
  • the digital filter 202 can control the output current of the conversion circuit 10 to be the above-mentioned preset current by increasing the duty cycle of the generated control signal; alternatively, the digital filter 202 can also reduce the generated control signal by The duty cycle is such that the output current of the conversion circuit 10 is controlled to be the above-mentioned preset current.
  • the digital filter of the control circuit can accurately generate a control signal based on the reference voltage and the output voltage of the conversion circuit. Through this control signal, the output current of the conversion circuit can be accurately controlled to be a preset current, ensuring digital The filter controls the accuracy of the output current of the conversion circuit to the preset current.
  • the embodiment of the present application also provides a power supply device 02, which includes at least one current control circuit 01 provided in the above embodiment.
  • the power supply device provided in this embodiment includes at least one current control circuit as provided in the above embodiment. Since the current control circuit includes a conversion circuit and a control circuit, the conversion circuit converts the input voltage and outputs it, and the control circuit outputs the voltage according to the reference voltage. and the output voltage of the above-mentioned conversion circuit, the output current of the conversion circuit is controlled to be a preset current. Since the reference voltage is determined based on the input voltage of the conversion circuit, the preset output voltage of the conversion circuit can be controlled based on the reference voltage and the output voltage of the conversion circuit.
  • the current is set so that the preset current waveform can change with the change of the input voltage waveform, so that as the input voltage of the conversion circuit changes, the output current of the conversion circuit also changes accordingly, so that the final output current of the conversion circuit It changes correspondingly with the change of the input voltage. Therefore, through the power supply device including the current control circuit, it can also be realized that the final output current of the conversion circuit changes correspondingly with the change of the input voltage.
  • an electronic device is also provided.
  • the electronic device includes the current control circuit 01 described in any of the above embodiments.
  • the electronic device includes a charging interface 310, a current control circuit 01, a battery 320 and a control module 330; wherein, in the electronic device, the position of the current control circuit 01 is connected between the charging interface 310 and the battery 320, so as to After the current input from the charging interface 310 is converted, the converted current is provided to charge the battery 320 .
  • the control module 330 is used to control the current control circuit 01 to realize conversion of the output current.
  • electronic equipment refers to any electronic equipment that requires external power supply or built-in power supply, such as various personal computers, notebook computers, mobile phones (smart mobile terminals), tablet computers, portable wearable devices, etc.
  • the power supply can be a power adapter, a mobile power supply (power bank, travel charger), etc.
  • the power supply can be a power adapter, a mobile power supply (power bank, travel charger), etc.
  • electronic devices can also be devices that require power, such as cars, electric cars, drones, e-books, e-cigarettes, smart electronic devices (including watches, bracelets, smart glasses, sweeping robots, etc. ), small electronic products (including wireless headsets, Bluetooth speakers, electric toothbrushes, rechargeable wireless mice, etc.), or (5G) communication module power supplies, etc., which are not limited in the embodiments of the present application.
  • the embodiment of the present application also provides an embodiment of a current control method, as shown in Figure 14.
  • This embodiment involves running a computer program to realize that the output current changes with changes in the input voltage. specific process. Then this embodiment includes:
  • S102 Control the changed output current to a preset current according to the reference voltage and the converted output voltage; the reference voltage is determined based on the input voltage, and the waveform of the preset current changes as the waveform of the input voltage changes.
  • the above reference voltage is generated based on the input voltage and a preset coefficient.
  • the above-mentioned control of the changed output current to a preset current based on the reference voltage and the converted output voltage includes: generating a control signal based on the reference voltage and the converted output voltage, and controlling the converted output current through the control signal to be Preset current.
  • these computer program instructions may also be loaded onto a computer or other programmable data processing device, causing a series of operating steps to be performed on the computer or other programmable device to produce computer-implemented processing, thereby causing the computer or other programmable device to perform a computer-implemented process. Execute the computer program instructions to implement the above functions.
  • the embodiment of the present application also provides a current control device, as shown in Figure 15, including: a conversion module and a control module, wherein:
  • the conversion module is used to convert the input voltage and output it
  • the control module is used to control the changed output current to a preset current based on the reference voltage and the converted output voltage; the reference voltage is determined based on the input voltage, and the waveform of the preset current changes as the waveform of the input voltage changes.
  • the current control device provided in this embodiment can execute the above embodiments of the current control method. Its implementation principles and technical effects are similar and will not be described again here.
  • embodiments of the present application also provide an electronic device, including a memory and a processor.
  • a computer program is stored in the memory.
  • the processor executes the steps of the current control method provided by the above embodiments.
  • Embodiments of the present application also provide a computer-readable storage medium on which a computer program is stored.
  • the computer program is executed by a processor, the steps of the current control method provided by the above embodiments are implemented.
  • Embodiments of the present application also provide a computer program product, which includes a computer program that, when executed by a processor, implements the steps of the current control method provided by the above embodiments.
  • the computer program can be stored in a non-volatile computer-readable storage.
  • the computer program when executed, may include the processes of the above method embodiments.
  • Any reference to memory, database or other media used in the embodiments provided in this application may include at least one of non-volatile and volatile memory.
  • Non-volatile memory can include read-only memory (ROM), magnetic tape, floppy disk, flash memory, optical memory, high-density embedded non-volatile memory, resistive memory (ReRAM), magnetic variable memory (Magnetoresistive Random Access Memory (MRAM), ferroelectric memory (Ferroelectric Random Access Memory, FRAM), phase change memory (Phase Change Memory, PCM), graphene memory, etc.
  • Volatile memory may include random access memory (Random Access Memory, RAM) or external cache memory, etc.
  • RAM Random Access Memory
  • RAM random access memory
  • RAM Random Access Memory
  • the databases involved in the various embodiments provided in this application may include at least one of a relational database and a non-relational database.
  • Non-relational databases may include blockchain-based distributed databases, etc., but are not limited thereto.
  • the processors involved in the various embodiments provided in this application may be general-purpose processors, central processing units, graphics processors, digital signal processors, programmable logic devices, quantum computing-based data processing logic devices, etc., and are not limited to this.

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Dc-Dc Converters (AREA)

Abstract

本申请涉及一种电流控制电路、电能提供装置、设备、控制方法和装置。电流控制电路01包括：变换电路10，用于对输入电压进行变换后输出；控制电路20，用于根据参考电压和变换电路10的输出电压，控制变换电路10的输出电流为预设电流；参考电压为根据输入电压确定的，预设电流的波形随着输入电压的波形的变化而变化。采用本电流控制电路，电流控制电路中的控制电路能够根据参考电压和上述变换电路的输出电压，控制变换电路的输出电流为预设电流，由于预设电流的波形随着输入电压的波形的变化而变化，可以实现随着变换电路的输入电压的变化，变换电路的输出电流也随之变化，使得变换电路最终的输出电流是随着输入电压的变化而相应变化的。

Description

电流控制电路、电能提供装置、设备、控制方法和装置
相关申请
本申请要求2022年04月01日申请的，申请号为2022103381758，名称为“电流控制电路、电能提供装置、设备、控制方法和装置”的中国专利申请的优先权，在此将其全文引入作为参考。
技术领域
本申请涉及充电技术领域，更具体的说，涉及一种电流控制电路、电能提供装置、设备、控制方法和装置。
背景技术
直流转直流(Direct Current-Direct Current，DC-DC)电路，表示的是将某一电压等级的直流电压变换其他电压等级直流电压的电路。例如，车载直流电源上接的DC-DC电路是将高压的直流电变换为低压的直流电。
现有DC-DC电路对输入电压进行处理，从而可以将DC-DC电路的输出电压稳定在一个恒定值，或者，将DC-DC电路的输出电流稳定在一个恒定值。
发明内容
有鉴于此，本申请公开一种电流控制电路、电能提供装置、设备、控制方法和装置，可以使得输出电流随着输入电压的变化而相应变化。
第一方面，本申请实施例提供一种电流控制电路，包括：
变换电路，用于对输入电压进行变换后输出；
控制电路，用于根据参考电压和所述变换电路的输出电压，控制所述变换电路的输出电流为预设电流；所述参考电压为根据所述输入电压确定的，所述预设电流的波形随着所述输入电压的波形的变化而变化。
第二方面，本申请实施例提供一种电能提供装置，包括上述第一方面任一项实施例提供的电流控制电路。
第三方面，本申请实施例提供一种电子设备，包括上述第一方面任一项实施例提供的电流控制电路。
第四方面，本申请实施例提供一种电流控制方法，所述方法包括：
对输入电压进行变换后输出；
根据参考电压和变换后的输出电压控制变化后的输出电流为预设电流；所述参考电压为根据所述输入电压确定的，所述预设电流的波形随着所述输入电压的波形的变化而变化。
第五方面，本申请实施例提供一种电流控制装置，所述装置包括：
变换模块，用于对输入电压进行变换后输出；
控制模块，用于根据参考电压和变换后的输出电压控制变化后的输出电流为预设电流；所述参考电压为根据所述输入电压确定的，所述预设电流的波形随着所述输入电压的波形的变化而变化。
第六方面，本申请实施例提供一种电子设备，包括存储器及处理器，所述存储器中储存有计算机程序，所述计算机程序被处理器执行时，使得处理器执行上述第四方面中实施例提供的方法步骤。
第七方面，本申请实施例提供一种计算机可读存储介质，其上存储有计算机程序，所述计算机程序被处理器执行时实现上述第四方面中实施例提供的方法步骤。
第八方面，本申请实施例提供一种计算机程序产品，包括计算机程序，该计算机程序被处理器执行时实现上述第四方面中实施例提供的方法步骤。
上述电流控制电路、电能提供装置、电子设备、电流控制方法、电流控制装置、计算机可读存储介质和计算机程序产品，电流控制电路包括变换电路和控制电路，其中，变换电路对输入电压进行变换后输出，控制电路根据参考电压和上述变换电路的输出电压，控制变换电路的输出电流为预设电流，由于参考电压是根据变换电路的输入电压确定的，因此可以根据该参考电压和变换电路的输出电压，控制变换电路输出预设电流，使得预设电流的波形可以随着输入电压的波形正向变化，或者，预设电流的波形可以随着输入电压的波形反向变化，从而实现了随着变换电路的输入电压的变化，变换电路的输出电流也随之变化，使得变换电路最终的输出电流是随着输入电压的变化而相应变化的。
附图说明
为了更清楚地说明本申请实施例或现有技术中的技术方案，下面将对实施例或现有技术描述中所需要使用的附图作简单地介绍，显而易见地，下面描述中的附图仅仅是本申请的实施例，对于本领域普通技术人员来讲，在不付出创造性劳动的前提下，还可以根据公开的附图获得其他的附图。
图1为一个实施例中的DCDC变换器工作状态参数曲线示意图；
图2为另一个实施例中的DCDC变换器工作状态参数曲线示意图；
图3为另一个实施例中的DCDC变换器工作状态参数曲线示意图；
图4为另一个实施例中的DCDC变换器工作状态参数曲线示意图；
图5为一个实施例中电流控制电路的结构示意图；
图6为一个实施例中变换电路的输入电压的波形与变换电路的输出电流的波形变化示意图；
图7为另一个实施例中变换电路的输入电压的波形与变换电路的输出电流的波形变化示意图；
图8为另一个实施例中电流控制电路的结构示意图；
图9为一个实施例中同相放大电路的示意图；
图10为一个实施例中反相放大电路的示意图
图11为另一个实施例中电流控制电路的结构示意图；
图12为另一个实施例中电流控制电路的结构示意图；
图13为一个实施例中电子设备内部结构示意图；
图14为一个实施例中电流控制方法流程示意图；
图15为一个实施例中电流控制装置的结构框图；
附图标记说明：
01：             电流控制电路；         10：         变换电路；
20：             控制电路；             201：    运算放大电路；
30：             反馈电路；             40：         采样电路；
401：            电阻；                 402：      运算放大器；
310：            充电接口；       320：  电池；  330：控制模块。
具体实施方式
为了使本申请的目的、技术方案及优点更加清楚明白，以下结合附图及实施例，对本申请进行进一步详细说明。应当理解，此处所描述的具体实施例仅仅用以解释本申请，并不用于限定本申请。
可以理解，本申请所使用的术语“第一”、“第二”等可在本文中用于描述各种元件，但这些元件不受这些术语限制。这些术语仅用于将第一个元件与另一个元件区分。举例来说，在不脱离本申请的范围的情况下，可以将第一客户端称为第二客户端，且类似地，可将第二客户端称为第一客户端。第一客户端和第二客户端两者都是客户端，但其不是同一客户端。而本申请所说“连接”、“联接”，如无特别说明，均包括直接和间接连接(联接)。在本申请的描述中，需要理解的是，方位词例如“上”、“下”等指示的方位或位置关系为基于附图所示的方位或位置关系，仅是为了便于描述本申请和简化描述，而不是指示或暗示所指的装置或元件必须具有特定的方位、以特定的方位构造和操作，因此不能理解为对本申请的限制。在本申请中，除非另有明确的规定和限定，第一特征在第二特征“上”或“下”可以是第一和第二特征直接接触，或第一和第二特征通过中间媒介间接接触。本申请中，并不以名称的差异来作为区分元件的方式，而是以元件在功能上的差异来作为区分原则。
相关技术中，直流转直流(Direct Current-Direct Current，DCDC)电源方案通常为输出稳压模式或输出恒流模式，这使得相关技术中DCDC转换器工作时可适用的场景非常单一，不够灵活。当输出电压、输出电流、输出电阻中的两项是确定的，则第三项可以用I＝U/R计算得到。对于DCDC产品，当DCDC产品的输出为恒电压输出(稳压输出)时，负载可以是CC(恒电流负载)或CR(恒电阻负载)，这两种负载方式在这种情况下是等效的。同理，当DCDC产品的输出为恒电流输出时，负载可以是CV(恒电压负载)或CR(恒电阻负载)，这两种负载方式也是等效的。
那么，对于DCDC变换器工作在稳压输入、稳压输出、接CC(CR)负载的情况下，输入电压/电流以及输出电压/电流的变化曲线请参见图1所示。根据图1的输入电压/电流以及输出电压/电流的变化曲线示意图可得，这种情况下输出电压/电流并不随输入电压/电流改变，两者都是随着时间变化一直处于固定值。
对于DCDC变换器工作在稳压输入、恒流输出、接CV(CR)负载的情况，输入电压/电流以及输出电压/电流的变化曲线请参见图2所示。根据图2的输入电压/电流以及输出电压/电流的变化曲线示意图可得，这种情况下与上述图1所示的情况相同，也是输出电压/电流并不随输入电压/电流改变，两者都是随着时间变化一直处于固定值。
对于DCDC变换器工作在非稳压输入、稳压输出、接CC(CR)负载的情况，输入电压/电流以及输出电压/电流的变化曲线请参见图3所示。根据图3的输入电压/电流以及输出电压/电流的变化曲线示意图可得，这种情况下，输出电压/电流并不随输入电压/电流改 变，一直处于固定值，同时，输入电流是随着输入电压反向变化的。
对于DCDC变换器工作在非稳压输入、恒流输出、接CV(CR)负载的情况，输入电压/电流以及输出电压/电流的变化曲线请参见图4所示。根据图4的输入电压/电流以及输出电压/电流的变化曲线示意图可得，这种情况下与上述图3所示的情况相同，输出电压/电流并不随输入电压/电流改变，一直处于固定值，同时，输入电流是随着输入电压反向变化的。
其中，图1-图4中，横轴均表示时间t，左边纵轴表示电压，右边纵轴表示电流。
由上述四种情况可知：DCDC变换器的输出电压或电流并不受到输入电压的影响，即输出功率与输入电压之间不存在关联。这也就导致相关技术中的DCDC变换器在一些对于输入电压非稳压的，需要根据输入电压的变化调整输出功率的场景下无法适用。例如，以太阳能发电板为例，天气原因会导致太阳能发电板发电不足，这样就使得DCDC变换器的输入电压突然降低，此时，需要减小DCDC变换器的输出功率，避免包含DCDC变换器的产品中的部分系统电路受到损毁。然而这种场景下，因相关技术中的DCDC转换器的模式是稳压输出或恒流输出，就无法实现在输入电压降低时，减小输出功率的功能，也就使得这种场景下相关技术中的DCDC变换器无法适用。
基于此，相关技术中DCDC变换器存在可适用的场景单一，不够灵活的技术问题。针对上述情况，本申请实施例提出一种将变换电路的输出电压引入控制环路的控制方法，以使变换电路的输出电流随着输入电压的变化而变化(例如，正相关变化或者负相关变化)。
如图5所示，在一实施例中，本申请提供一种电流控制电路01，该电流控制电路01包括：变换电路10，用于对输入电压进行变换后输出；控制电路20，用于根据参考电压和变换电路的输出电压，控制变换电路的输出电流为预设电流；参考电压为根据输入电压确定的，预设电流的波形随着输入电压的波形的变化而变化。
其中，变换电路10可以实现电压或者电流的变换，例如，可以实现增大电流或减小电流，增大电压或减小电压等，其可以应用于boost、buck以及buck-boost等类型电路中。
示例性地，以变换电路10是DC-DC变换器为例，DC-DC变换器表示的是将某一电流等级的直流电变换为其他电流等级的直流电。对于DC-DC变换器的内部电路结构以及具体转换过程本申请实施例不作限定，只要能够实现将某一电流等级的直流电变换为其他电流等级的直流电即可。
需要说明的是，DC-DC变换器具有最低工作电压，当输入电压小于DC-DC变换器的最低工作电压时，DC-DC变换器会停止工作，也即当输入电压小于DC-DC变换器的最低工作电压时，DC-DC变换器的输出电流为0。因此，本申请实施例中变换电路10的输入电压大于DC-DC变换器的最低工作电压，也即，当DC-DC变换器的输入电压大于DC-DC变换器的最低工作电压时，控制电路20可以根据参考电压和变换电路10的输出电压，控制变换电路10的输出电流的波形随着输入电压的波形的变化而变化。
在上述变换电路10是DC-DC变换器的场景中，上述控制电路20与DC-DC变换器可集成，可选的，控制电路20可集成在DC-DC变换器内部。
另外，可以理解的是，当DC-DC变换器连接的是恒压负载时，在本实施例中引起变换电路10变化的物理量为变换电路10的输入电压，控制电路20对输入电压进行转化，能够控制变换电路10的输出电流的波形跟随输入电压的波形发生变化，而变换电路的输出电压会因为恒压负载上的电流的变化而产生变化的压降，造成输出电压产生波动，从而对变换电路10的输出功率产生了影响。示例性地，以Vload＝8V，Rcable＝100mΩ为例，其中，Vload为变换电路10连接的恒压负载对应的电压值，Rcable为变换电路10连接的恒压负载对应的电阻值，假设变换电路10的输入电压Vin从12V到31V波动，控制电路20控制变换电路20的输出电流Iout在0.5到8A波动，则变换电路的输出电压Vout＝Vload+Iout*Rcable会在8.05～8.8V波动，Vin*Iin＝Vout*Iout/η，约在0.4～2.6A波动，由此可以看出，当变换电路10的输入电压Vin越大，变换电路10的输出电流Iout也越大， 变换电路10的输入电流Iin也越大；当变换电路10的输入电压Vin越小，变换电路10的输出电流Iout也越小，变换电路10的输入电流Iin也越小。
其中，上述参考电压可以是根据变换电路10的输入电压确定的值。可选的，在本实施例中，控制电路20可以根据参考电压和变换电路10的输出电压，控制变换电路10的输出电流的波形与输入电压的波形正相关地变化，例如，可以控制变换电路10的输出电流随着输入电压的增大而增大，或者，可以控制变换电路10的输出电流随着输入电压的减小而减小。或者，作为另一种可选的实施方式，控制电路20可以根据参考电压和变换电路10的输出电压，控制变换电路10的输出电流的波形与输入电压的波形负相关地变化，例如，可以控制变换电路10的输出电流随着输入电压的增大而减小，或者，可以控制变换电路10的输出电流随之输入电压的减小而增大。需要说明的是，本申请实施例提供的电流控制电路可用于光伏系统、太阳能充电单元等需要根据输入电压实现输出功率控制的场景中。
可选的，在本实施例中，控制电路20可以通过模拟电路实现控制变换电路10的输出电流为上述预设电流，也可以通过数字电路实现控制变换电路10的输出电流为上述预设电流。可选的，控制电路20可以为专门设置的一个用于控制变换电路10的输出电流的电路，也可以是复用电流控制电路所在设备中的控制电路，本实施例在此不做限制。
以上述控制电路20通过模拟电路实现控制变换电路10输出上述预设电流为例，控制电路20为模拟电路时，该控制电路20可以包括运算放大器、比较器等元器件，控制电路20可以通过运算放大器和比较器等元器件对上述参考电压和变换电路10的输出电压进行处理，生成电压或者电流信号，通过生成的电压或者电流信号对变换电路10的输出电流进行调节，以使变换电路10的输出电流为上述预设电流。
以上述控制电路20通过数字电路实现控制变换电路10输出上述预设电流为例，当控制电路20为数字电路时，控制电路20可以包括中央处理器(Central Processing Unit，CPU)、数字信号处理器(Digital Signal Processing，DSP)、现场可编程逻辑门阵列(Field Programmable GateArray，FPGA)、单片机等等，此时，控制电路20可以和变换电路10之间进行通信，因此，控制电路20可以根据上述参考电压和变换电路20的输出电压，向变换电路10发送调节信号，通过调节信号对变换电路10的输出电流进行调节，以使变换电路10输出上述预设电流。
可选的，在本实施例中，以控制变换电路10的输出电流的波形与输入电压的波形正相关地变化为例，控制电路20可以根据参考电压和变换电路10的输出电压，控制变换电路10的输出电流随输入电压产生较大幅度的变化，这种情况下，变换电路10的输入电压的波形与变换电路10的输出电流的波形变化图可以如图6所示；或者，控制电路20也可以根据参考电压和变换电路10的输出电压，控制变换电路10的输出电流随输入电压产生小幅度的变化，这种情况下，变换电路10的输入电压的波形与变换电路10的输出电流的波形变化图可以如图7所示。
需要说明的是，本实施例中，控制电路是根据参考电压和变换电路的输出电压控制变换电路的输出电流为预设电流，根据电压、电流和电阻三者之间的关系可知，当电阻和电压值确定时，电流值也是可以确定的，作为一种可选的实施方式，在一些场景中，控制电路还可以根据参考电流和变换电路的输出电流，控制变换电路的输出电流为上述预设电流。
上述电流控制电路包括变换电路和控制电路，其中，变换电路对输入电压进行变换后输出，控制电路根据参考电压和上述变换电路的输出电压，控制变换电路的输出电流为预设电流，由于参考电压是根据变换电路的输入电压确定的，因此可以根据该参考电压和变换电路的输出电压，控制变换电路输出预设电流，使得预设电流的波形可以随着输入电压的波形正向变化，或者，预设电流的波形可以随着输入电压的波形反向变化，从而实现了随着变换电路的输入电压的变化，变换电路的输出电流也随之变化，使得变换电路最终的 输出电流是随着输入电压的变化而相应变化的。
进一步地，在一个实施例中，如图8所示，上述充电电路01还包括：反馈电路30；反馈电路30，用于采集输入电压，并根据输入电压生成参考电压。
其中，反馈电路30分别与变换电路10的输入端和控制电路20的输入端连接。在本实施例中，反馈电路30可以采集变换电路10的输入电压，并根据采集到的输入电压生成上述参考电压。可选的，反馈电路30可以根据输入电压与参考电压之间对应的函数关系，确定出上述参考电压。可选的，上述参考电压和变换电路10的输入电压之间可以是线性关系，也可以是非线性关系，以上述参考电压和变换电路10的输入电压之间是线性关系为例，则反馈电路30可以根据下述公式：V ref＝V in×k确定出上述参考电压，式中，V ref表示上述参考电压，V in表示上述变换电路10的输入电压，k为常数。
可选的，在本实施例中，反馈电路30可以为数字电路，也可以为模拟电路。
可选的，当上述反馈电路30为数字电路时，上述反馈电路20可以根据输入电压和预设系数生成上述参考电压，即在该场景下，反馈电路20可以根据上述公式：V ref＝V in×k，生成上述参考电压。
可选的，当上述反馈电路30为模拟电路时，反馈电路30可以包括同相放大电路，或者可以包括反相放大电路，下边将分别对这两种电路加以说明：
第一种：当反馈电路30包括同相放大电路时，该同相放大电路可以根据上述输入电压，生成与输入电压正相关的第一参考电压。可以理解的是，在反馈电路30包括同相放大电路的情况下，由于生成的第一参考电压与输入电压是正相关的，那么，控制电路20根据该参考电压和变换电路10的输出电压，控制变换电路10的输出电流的波形将随着输入电压的波形正向变化，示例性地，图9为一个实施例中反馈电路30包括的同相放大电路的示意图，需要说明的是，图9中的同相放大电路示意图是一种最基本的同相放大电路，本实施例中的同相放大电路可以在图9示意的电路图上加以调整和修改，本申请实施例在此对同相放大电路的具体结构不加以限制，只要能够实现根据变换电路10的输入电压，生成与输入电压正相关的第一参考电压即可。
第二种：当反馈电路30包括反相放大电路时，该反相放大电路可以根据上述输入电压，生成与输入电压负相关的第二参考电压。可以理解的是，在反馈电路30包括反相放大电路的情况下，由于生成的第二参考电压与输入电压是负相关的，那么，控制电路20根据该参考电压和变换电路10的输出电压，控制变换电路10的输出电流的波形将随着输入电压的波形反向变化，示例性地，图10为一个实施例中反馈电路30包括的反相放大电路的示意图，需要说明的是，图10中的反相放大电路示意图是一种最基本的反相放大电路，本实施例中的反相放大电路可以在图10示意的电路图上加以调整和修改，本申请实施例在此对反相放大电路的具体结构不加以限制，只要能够实现根据变换电路10的输入电压，生成与输入电压负相关的第二参考电压即可。
本实施例中，电流控制电路还包括反馈电路，该反馈电路可以采集变换电路的输入变压，并根据变换电路的输入电压生成参考电压，由于反馈电路生成的参考电压是根据变换电路的输入电压生成的，进而可以使得控制电路根据生成的参考电压和变换电路的输出电压，控制变换电路的输出电流为预设电流，从而实现了随着变换电路的输入电压的变化，变换电路的输出电流也随之变化，使得变换电路最终的输出电流是随着输入电压的变化而相应变化的。
在上述控制电路20控制变换电路10的输出电流为预设电流的场景中，控制电路30可以通过调整控制信号的占空比，以控制变换电路10输出上述预设电流。在一个实施例中，上述控制电路20，用于根据参考电压和变换电路10的输出电压，调整控制信号的占 空比，以控制变换电路10的输出电流为预设电流。
其中，控制信号的占空比是指变换电路10被接通的时间占整个电路工作周期的百分比，在本实施例中，控制电路20通过调整控制信号的占空比，也就是对变换电路10被接通的时间占整个电路工作周期的百分比进行调整，可以使变换电路10的输出电流根据变换电路10在一个脉冲循环内的通电时间发生相应地变化，从而可以对变换电路10的输出电流进行调节。可选的，在本实施例中，控制电路20可以根据上述参考电压和变换电路10的输出电压，增大控制信号的占空比，以控制变换电路10的输出电流为上述预设电流，或者，控制电路20可以根据上述参考电压和变换电路10的输出电压，减小控制信号的占空比，以控制变换电路10的输出电流为上述预设电流。
本实施例中，变换电路输出的预设电路为控制电路根据参考电压和变换电路的输出电压，调整控制信号的占空比得到的，这样通过调整控制信号的脉冲占空比就能够对变换电路的输出电流进行灵活地调整，从而使得变换电路的输出电流能够满足更为广泛的应用场景。
进一步地，在一个实施例中，如图11所示，上述控制电路20包括：运算放大电路201；运算放大电路201，用于根据参考电压和变换电路10的输出电压生成电压差，通过电压差控制变换电路10的输出电流为预设电流。
其中，本申请中的被控对象为变换电路10的输出电流，控制的输入量为变换电路10的输入电压，两者的对应关系可以通过相应的硬件电路进行实现，即变换电路10的输出电流可以通过控制电路20生成的电压值进行调控。可选的，在本实施例中，控制电路20包括的运算放大电路201可以对上述参考电压和变换电路10的输出电压进行运算，并对运算后的信号进行增大后得到电压差，通过该电压差控制变换电路10的输出电流为上述预设电流。可选的，在本实施例中，运算放大电路201可以在上述电压差大于预设阈值时，增大控制信号的占空比，以控制上述变换电路10的输出电流为上述预设电流；运算放大电路202可以在上述电压差小于等于预设阈值时，减小控制信号的占空比，以控制上述变换电路10的输出电路为上述预设电流，以预设阈值为0.5V为例，当上述参考电压和变换电路10的输出电压生成的电压差为1V时，电压差大于预设阈值，则运算放大电路201可以增大控制信号的占空比，以控制上述变换电路10的输出电流为上述预设电流；当上述参考电压和变换电路10的输出电压生成的电压差为0.4V时，电压差小于预设阈值，则运算放大电路201可以减小控制信号的占空比，以控制上述变换电路10的输出电流为上述预设电流。需要说明的是，运算放大电路202在上述电压差等于预设阈值时，虽然也是通过减小控制信号的占空比，控制变换电路10输出上述预设电流，但此时，运算放大电路202对控制信号的占空比的调整值为0。
本实施例中，控制电路的运算放大电路能够根据参考电压和变换电路的输出电压生成电压差，从而可以根据该电压差控制变换电路10的输出电流为预设电流，也就是说运算放大电路能够根据参考电压和变换电路的输出电压对变换电路的输出电流进行灵活地调节，使得变换电路的输出电流能够随输入电压的变化而变化，从而使得变换电路的输出电流能够满足更为广泛的应用场景。
进一步地，在上述实施例的基础上，如图12所示，上述电流控制电路01还包括：采样电路40；采样电路40，用于采集变换电路10的输出电压。
在本实施例中，由于控制电路20控制变换电路10的输出电流为预设电流时，需要根据参考电压和变换电路10的输出电压，对变换电路10的输出电流进行控制，因此，可以通过采样电路40，得到变换电路10的输出电压，将变换电路10的输出电压传输至控制电路20。可选的，请继续参见图12，上述采样电路40可以包括电阻401和运算放大器402，其中，运算放大器402的反相输入端与电阻401的第一端连接；运算放大器402的同相输入端与电阻401的第二端连接；运算放大器402的反相输入端与电阻401的第一端形成的公共端与上述变换电路10的输出端连接，运算放大器402的输出端与上述控制电路20连 接，运算放大器402通过采集电阻401两端的电压，得到变换电路10的输出电压，进而通过运算放大器402的输出端将采集的变换电路10的输出电压传输至控制电路20中，以使控制电路20根据参考电压和变换电路10的输出电压，对变换电路10的输出电流进行调整。
本实施例中，通过电流控制电路中的采样电路，能够准确地采集到变换电路的输出电压，从而可以使控制电路根据采样电路采集到的变换电路的输出电压和参考电压，对变换电路的输出电流进行准确地调整，确保了对变换电路的输出电流的调整准确度。
在上述控制电路20根据参考电压和变换电路10的输出电压，控制变换电路10的输出电流为预设电流的场景中，控制电路20可以向变换电路10发送控制信号，控制变换电路10的输出电流为预设电流，在一个实施例中，上述控制电路20包括：数字滤波器202；数字滤波器202，用于根据参考电压和变换电路10的输出电压生成控制信号，通过控制信号控制变换电路10的输出电流为预设电流。
在本实施例中，可以采用数字电路来实现控制电路20的功能，例如，采用一个具有数据运算功能的数字滤波器202来执行上述控制模块的功能，其中，数字滤波器202能够对输入的参考电压和变换电路10的输出电压进行运算处理生成控制信号。可选的，在本实施例中，数字滤波器202可以将生成的控制信号传输至变换电路10，通过该控制信号控制变换电路10的输出电流为预设电流。可选的，数字滤波器202可以通过增大生成的控制信号的占空比，以控制变换电路10的输出电流为上述预设电流；或者，数字滤波器202也可以通过减小生成的控制信号的占空比，以控制变换电路10的输出电流为上述预设电流。
本实施例中，通过控制电路的数字滤波器，能够准确地根据参考电压和变换电路的输出电压生成控制信号，通过该控制信号能够准确地控制变换电路的输出电流为预设电流，确保了数字滤波器控制变换电路的输出电流为预设电流的准确度。
另外，本申请实施例还提供了一种电能提供装置02，该电能提供装置02包括至少一个上述实施例中所提供的电流控制电路01。
本实施例提供的电能提供装置包括至少一个如上述实施例提供的电流控制电路，由于该电流控制电路包括变换电路和控制电路，其中，变换电路对输入电压进行变换后输出，控制电路根据参考电压和上述变换电路的输出电压，控制变换电路的输出电流为预设电流，由于参考电压是根据变换电路的输入电压确定的，因此可以根据该参考电压和变换电路的输出电压，控制变换电路输出预设电流，使得预设电流的波形可以随着输入电压的波形的变化而变化，实现了随着变换电路的输入电压的变化，变换电路的输出电流也随之变化，使得变换电路最终的输出电流是随着输入电压的变化而相应变化的，因此，通过包括该电流控制电路的电能提供装置也能够实现变换电路最终的输出电流是随着输入电压的变化而相应变化的。
在一个实施例中，还提供了一种电子设备，该电子设备包括上述任一实施例所描述的电流控制电路01。
如图13所示，电子设备包括充电接口310、电流控制电路01、电池320和控制模块330；其中，在电子设备中，电流控制电路01的位置连接在充电接口310和电池320之间，以对从充电接口310输入的电流进行变换后，变换后的电流提供给电池320充电。其中，控制模块330用于对电流控制电路01进行控制，以实现对输出电流进行变换。
本申请实施例中，电子设备表示任何需要外接电源或者内置电源的电子设备，例如，各种个人计算机、笔记本电脑、手机(智能移动终端)、平板电脑和便携式可穿戴装置等，本实施例对此不做限定。若是外置电源，该电源可以是电源适配器、移动电源(充电宝、旅充)等，本实施例对此也不做限定。当然，电子设备除了可以为终端，还可以是需要电源的设备，例如，汽车、电动汽车、无人机、电子书、电子烟、智能电子设备(包括手表、手环、智能眼镜、扫地机器人等)、小型电子产品(包括无线耳机、蓝牙音响、电动牙刷、 可充电无线鼠标等)，也可以是(5G)通讯模块电源等等，本申请实施例对此均不作限定。
另外，在一个实施例中，本申请实施例还提供了一种电流控制方法的实施例，如图14所示，该实施例涉及的是通过运行计算机程序实现输出电流随输入电压的变化而变化的具体过程。则该实施例包括：
S101，对输入电压进行变换后输出。
S102，根据参考电压和变换后的输出电压控制变化后的输出电流为预设电流；参考电压为根据输入电压确定的，预设电流的波形随着输入电压的波形的变化而变化。
可选的，上述参考电压为根据输入电压和预设系数生成的。
可选的，上述根据参考电压和变换后的输出电压控制变化后的输出电流为预设电流，包括：根据参考电压和变换后的输出电压生成控制信号，通过控制信号控制变换后的输出电流为预设电流。
可以理解的是，以上过程通过计算机程序指令实现，这些计算机程序指令提供到通用计算机、专用计算机、嵌入式处理机或其他可编程数据处理设备的处理器中，使得通过该计算机或其他可编程数据处理设备的处理器执行的指令可实现本实施例实现输出电压随输入电压的增加而增加。当然，这些计算机程序指令也可存储在能引导计算机或其他可编程数据处理设备以特定方式工作的计算机可读存储器中，使得存储在该计算机可读存储器中的指令产生包括指令装置的制造品。或者，这些计算机程序指令也可装载到计算机或其他可编程数据处理设备上，使得在计算机或其他可编程设备上执行一系列操作步骤以产生计算机实现的处理，从而在计算机或其他可编程设备上执行该计算机程序指令实现上述功能。
另外，本申请实施例还提供一种电流控制装置，如图15所示，包括：变换模块和控制模块，其中：
变换模块，用于对输入电压进行变换后输出；
控制模块，用于根据参考电压和变换后的输出电压控制变化后的输出电流为预设电流；参考电压为根据输入电压确定的，预设电流的波形随着输入电压的波形的变化而变化。
本实施例提供的电流控制装置，可以执行上述电流控制方法的实施例，其实现原理和技术效果类似，在此不再赘述。
另外，本申请实施例还提供一种电子设备，包括存储器及处理器，存储器中储存有计算机程序，计算机程序被处理器执行时，使得处理器执行上述实施例提供的电流控制方法的步骤。
本申请实施例还提供一种计算机可读存储介质，其上存储有计算机程序，计算机程序被处理器执行时实现上述实施例提供的电流控制方法的步骤。
本申请实施例还提供一种计算机程序产品，包括计算机程序，该计算机程序被处理器执行时实现上述实施例提供的电流控制方法的步骤。
本领域普通技术人员可以理解实现上述实施例方法中的全部或部分流程，是可以通过计算机程序来指令相关的硬件来完成，所述的计算机程序可存储于一非易失性计算机可读取存储介质中，该计算机程序在执行时，可包括如上述各方法的实施例的流程。其中，本申请所提供的各实施例中所使用的对存储器、数据库或其它介质的任何引用，均可包括非易失性和易失性存储器中的至少一种。非易失性存储器可包括只读存储器(Read-Only Memory，ROM)、磁带、软盘、闪存、光存储器、高密度嵌入式非易失性存储器、阻变存储器(ReRAM)、磁变存储器(Magnetoresistive Random Access Memory，MRAM)、铁电存储器(Ferroelectric Random Access Memory，FRAM)、相变存储器(Phase Change Memory，PCM)、石墨烯存储器等。易失性存储器可包括随机存取存储器(Random Access Memory，RAM)或外部高速缓冲存储器等。作为说明而非局限，RAM可以是多种形式，比如静态随机存取存储器(Static Random Access Memory，SRAM)或动态随机存取存储器(Dynamic Random Access Memory，DRAM)等。本申请所提供的各实施例中所涉及的数 据库可包括关系型数据库和非关系型数据库中至少一种。非关系型数据库可包括基于区块链的分布式数据库等，不限于此。本申请所提供的各实施例中所涉及的处理器可为通用处理器、中央处理器、图形处理器、数字信号处理器、可编程逻辑器、基于量子计算的数据处理逻辑器等，不限于此。
以上实施例的各技术特征可以进行任意的组合，为使描述简洁，未对上述实施例中的各个技术特征所有可能的组合都进行描述，然而，只要这些技术特征的组合不存在矛盾，都应当认为是本说明书记载的范围。
以上所述实施例仅表达了本申请的几种实施方式，其描述较为具体和详细，但并不能因此而理解为对本申请专利范围的限制。应当指出的是，对于本领域的普通技术人员来说，在不脱离本申请构思的前提下，还可以做出若干变形和改进，这些都属于本申请的保护范围。因此，本申请专利的保护范围应以所附权利要求为准。

Claims (21)

  1. 一种电流控制电路，其特征在于，包括：
    变换电路，用于对输入电压进行变换后输出；
    控制电路，用于根据参考电压和所述变换电路的输出电压，控制所述变换电路的输出电流为预设电流；所述参考电压为根据所述输入电压确定的，所述预设电流的波形随着所述输入电压的波形的变化而变化。
  2. 根据权利要求1所述的电流控制电路，其特征在于，所述电流控制电路还包括：反馈电路；
    所述反馈电路，用于采集所述输入电压，并根据所述输入电压生成所述参考电压。
  3. 根据权利要求2所述的电流控制电路，其特征在于，所述反馈电路，用于根据所述输入电压和预设系数生成所述参考电压。
  4. 根据权利要求3所述的电流控制电路，其特征在于，所述反馈电路包括：同相放大电路；
    所述同相放大电路，用于根据所述输入电压，生成第一参考电压；其中，所述第一参考电压与所述输入电压正相关。
  5. 根据权利要求3所述的电流控制电路，其特征在于，所述反馈电路包括：反相放大电路；
    所述反相放大电路，用于根据所述输入电压，生成第二参考电压；其中，所述第二参考电压与所述输入电压负相关。
  6. 根据权利要求1-5任一项所述的电流控制电路，其特征在于，所述控制电路，用于根据所述参考电压和所述变换电路的输出电压，调整控制信号的占空比，以控制所述变换电路的输出电流为所述预设电流。
  7. 根据权利要求6所述的电流控制电路，其特征在于，所述控制电路包括：运算放大电路；
    所述运算放大电路，用于根据所述参考电压和所述变换电路的输出电压生成电压差，通过所述电压差控制所述变换电路的输出电流为所述预设电流。
  8. 根据权利要求7所述的电流控制电路，其特征在于，所述运算放大电路，用于在所述电压差大于预设阈值时，增大所述控制信号的占空比；在所述电压差小于等于预设阈值时，减小所述控制信号的占空比。
  9. 根据权利要求1所述的电流控制电路，其特征在于，所述电流控制电路还包括：采样电路；
    所述采样电路，用于采集所述变换电路的输出电压。
  10. 根据权利要求9所述的电流控制电路，其特征在于，所述采样电路包括电阻和运算放大器；所述运算放大器的反相输入端与所述电阻的第一端连接；所述运算放大器的同相输入端与所述电阻的第二端连接；所述运算放大器的反相输入端与所述电阻的第一端的公共端与所述变换电路的输出端连接，所述运算放大器的输出端与所述控制电路连接。
  11. 根据权利要求1所述的电流控制电路，其特征在于，所述控制电路包括：数字滤波器；
    所述数字滤波器，用于根据所述参考电压和所述变换电路的输出电压生成控制信号，通过所述控制信号控制所述变换电路的输出电流为所述预设电流。
  12. 根据权利要求1所述的电流控制电路，其特征在于，所述变换电路为DC-DC变换器，所述控制电路与所述DC-DC变换器可集成。
  13. 一种电能提供装置，其特征在于，包括如权利要求1-12任一项所述的电流控制电路。
  14. 一种电子设备，其特征在于，包括如权利要求1-12任一项所述的电流控制电路。
  15. 一种电流控制方法，其特征在于，所述方法包括：
    对输入电压进行变换后输出；
    根据参考电压和变换后的输出电压控制变化后的输出电流为预设电流；所述参考电压为根据所述输入电压确定的，所述预设电流的波形随着所述输入电压的波形的变化而变化。
  16. 根据权利要求15所述的电流控制方法，其特征在于，所述参考电压为根据所述输入电压和预设系数生成的。
  17. 根据权利要求15-16任一项所述的电流控制方法，其特征在于，所述根据参考电压和变换后的输出电压控制变化后的输出电流为预设电流，包括：
    根据所述参考电压和所述变换后的输出电压生成控制信号，通过所述控制信号控制变换后的输出电流为所述预设电流。
  18. 一种电流控制装置，其特征在于，包括：
    变换模块，用于对输入电压进行变换后输出；
    控制模块，用于根据参考电压和变换后的输出电压控制变化后的输出电流为预设电流；所述参考电压为根据所述输入电压确定的，所述预设电流的波形随着所述输入电压的波形的变化而变化。
  19. 一种电子设备，包括存储器及处理器，所述存储器中储存有计算机程序，其特征在于，所述计算机程序被所述处理器执行时，使得所述处理器执行如权利要求15-17任一项所述的电流控制方法的步骤。
  20. 一种计算机可读存储介质，其上存储有计算机程序，其特征在于，所述计算机程序被处理器执行时实现如权利要求15-17任一项所述的方法的步骤。
  21. 一种计算机程序产品，包括计算机程序，其特征在于，该计算机程序被处理器执行时实现权利要求15-17任一项所述的方法的步骤。
PCT/CN2022/137923 2022-04-01 2022-12-09 电流控制电路、电能提供装置、设备、控制方法和装置 WO2023185086A1 (zh)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN202210338175.8A CN116937966A (zh) 2022-04-01 2022-04-01 电流控制电路、电能提供装置、设备、控制方法和装置
CN202210338175.8 2022-04-01

Publications (1)

Publication Number Publication Date
WO2023185086A1 true WO2023185086A1 (zh) 2023-10-05

Family

ID=88198937

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/CN2022/137923 WO2023185086A1 (zh) 2022-04-01 2022-12-09 电流控制电路、电能提供装置、设备、控制方法和装置

Country Status (2)

Country Link
CN (1) CN116937966A (zh)
WO (1) WO2023185086A1 (zh)

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1512286A (zh) * 2002-12-30 2004-07-14 北京通力环电气股份有限公司 太阳能电源装置及其最大功率点跟踪控制方法
JP2007336632A (ja) * 2006-06-13 2007-12-27 Mitsubishi Electric Corp 電力変換装置
KR101350995B1 (ko) * 2012-12-18 2014-01-15 충북대학교 산학협력단 전류 조절 기법을 이용한 단일 입력 다중 출력 부스트 컨버터
CN103825459A (zh) * 2014-02-17 2014-05-28 华为技术有限公司 一种dc-dc转换电路
KR20190101672A (ko) * 2018-02-23 2019-09-02 우석대학교 산학협력단 최대전력점 추종 제어를 위한 태양광 발전 시스템

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1512286A (zh) * 2002-12-30 2004-07-14 北京通力环电气股份有限公司 太阳能电源装置及其最大功率点跟踪控制方法
JP2007336632A (ja) * 2006-06-13 2007-12-27 Mitsubishi Electric Corp 電力変換装置
KR101350995B1 (ko) * 2012-12-18 2014-01-15 충북대학교 산학협력단 전류 조절 기법을 이용한 단일 입력 다중 출력 부스트 컨버터
CN103825459A (zh) * 2014-02-17 2014-05-28 华为技术有限公司 一种dc-dc转换电路
KR20190101672A (ko) * 2018-02-23 2019-09-02 우석대학교 산학협력단 최대전력점 추종 제어를 위한 태양광 발전 시스템

Also Published As

Publication number Publication date
CN116937966A (zh) 2023-10-24

Similar Documents

Publication Publication Date Title
US10069412B2 (en) Voltage converter for power management
US9772638B2 (en) Two-stage error amplifier with nested-compensation for LDO with sink and source ability
KR102169384B1 (ko) 스위칭 레귤레이터, 이를 포함하는 전력 관리 장치 및 시스템
US8860395B2 (en) Circuit and method for generating a ramp compensation voltage for a switching regulator
KR102151179B1 (ko) 히스테리시스를 갖는 스위칭 레귤레이터
CN102279609B (zh) 电压调节器及其参考电压产生电路
Chincholkar et al. Comparative study of current‐mode controllers for the positive output elementary Luo converter via state‐space and frequency response approaches
CN103268134B (zh) 可提高瞬态响应的低压差电压调节器
TW201233017A (en) Control circuit for switching regulator, switching regulator and electronic equipment using the control circuit
JP2013046496A (ja) 制御回路、電源装置及び電源の制御方法
TWI472122B (zh) 電流調節系統
CN202067171U (zh) 低压差线性稳压器
WO2011048796A1 (ja) Ｄｃ－ｄｃコンバータ
US20150381033A1 (en) Enhanced transient response for systems powered by energy harvesters
Xian et al. Subproportion control of double input buck converter for fuel cell/battery hybrid power supply system
CN108549238A (zh) 基于多胞形LPV系统Buck变换器的鲁棒变增益控制方法
CN105375760A (zh) 具有组合的控制信号和改善的动态范围的电流模式控制调制器
WO2023185086A1 (zh) 电流控制电路、电能提供装置、设备、控制方法和装置
WO2024032465A1 (zh) 一种追踪负载电流的电压转换器模式切换电路及方法
US9331514B2 (en) Charging apparatus
CN203422692U (zh) 一种低压差线性稳压器及其软启动电路
TWI400592B (zh) 線性穩壓器
CN103929059A (zh) 转换器的电流限流方案
Zeng et al. Pseudo-V2 control with adaptive compensation for fast-transient current-mode buck converter
WO2023024984A1 (zh) 电流控制电路、电能提供装置和相关产品

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 22934903

Country of ref document: EP

Kind code of ref document: A1