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CN-122026734-A - Power supply equipment, power supply control method and power utilization system

CN122026734ACN 122026734 ACN122026734 ACN 122026734ACN-122026734-A

Abstract

The application provides power supply equipment, a power supply control method and an electricity utilization system, wherein the power supply equipment comprises a converter, a switch module, a switch control module and M output ports, the converter is connected with the switch module, the switch module is connected with the switch control module and the M output ports, the switch control module is connected with the M-1 output ports, the switch control module is used for outputting control signals to the switch module according to output signals of the M-1 output ports and the frequency of output current of the converter, the frequency of the output current of the converter is used for determining the frequency of the control signals, the output signals of the M-1 output ports are used for adjusting the conduction time of any one of the converter and the M output ports, and the switch module is used for controlling the connection of the converter and the M output ports according to the control signals. Therefore, the switching frequency of the switching module can be changed along with the frequency change of the output current of the converter, so that the output ripple wave is reduced, and the power supply efficiency is improved.

Inventors

  • HOU QINGHUI
  • CAO YULIANG
  • YANG CHENGJUN
  • LIU XINYING

Assignees

  • 华为技术有限公司

Dates

Publication Date
20260512
Application Date
20241112

Claims (20)

  1. 1. The power supply equipment is characterized by comprising a converter, a switch module, a switch control module and M output ports, wherein M is an integer larger than 1, the converter is connected with the switch module, the switch module is also respectively connected with the switch control module and the M output ports, and the switch control module is also connected with M-1 output ports in the M output ports; The switch control module is used for outputting a control signal to the switch module according to the output signals of the M-1 output ports and the frequency of the output current of the converter, wherein the frequency of the output current of the converter is used for determining the frequency of the control signal, and the output signals of the M-1 output ports are used for adjusting the conduction time of the converter and any one of the M output ports; the switch module is used for controlling the connection between the converter and the M output ports according to the control signal.
  2. 2. The power supply apparatus according to claim 1, wherein the converter includes an output controller and an output switch, the output controller being configured to control the output switch to output current from the converter when the output switch is on; The input end of the switch control module is connected with the output controller, and the switch control module is specifically used for outputting the control signals according to the output signals of the M-1 output ports and the frequency of the output switch controlled by the output controller.
  3. 3. The power supply apparatus according to claim 1, wherein the converter includes an output controller and an output switch, the output controller being configured to control the output switch to output current from the converter when the output switch is on; The input end of the switch control module is connected with the output switch, and the switch control module is specifically used for outputting the control signals according to the output signals of the M-1 output ports and the switching frequency of the output switch.
  4. 4. The power supply apparatus according to any one of claims 1 to 3, wherein the switch control module includes a driver and a signal generation unit, the signal generation unit being connected to the M-1 output ports, the driver, the inverter, respectively, the driver being further connected to the switch module; the signal generation unit is used for outputting an indication signal according to the frequency of the output current of the converter and the output signal of the connected output port; the driver is used for outputting the control signal to the switch module according to the indication signal.
  5. 5. The power supply apparatus according to claim 4, wherein the signal generating unit includes a synchronous generator, M-1 comparators, and M-1 reference processors, the M-1 comparators being in one-to-one correspondence with the M-1 reference processors; The first input end of each comparator of the M-1 comparators is connected with the output end of the synchronous generator, the second input end of each comparator is connected with the output end of a corresponding reference processor, the output end of each comparator is connected with the input end of the driver, the input end of each reference processor of the M-1 reference processors is connected with one of the M-1 output ports, and different reference processors of the M-1 reference processors are connected with different output ports of the M-1 output ports; The synchronous generator is used for generating a target signal according to the frequency of the output current of the converter, wherein the target signal is a ramp wave signal; Each reference processor is used for outputting a reference signal according to an output signal of a connected output port, wherein the output signal comprises at least one of output voltage and output current; And each comparator is used for outputting the indication signal according to the magnitude relation between the reference signal output by the corresponding reference processor and the ramp signal.
  6. 6. The power supply apparatus according to claim 5, further comprising a controller connected to the synchronous generator and the M output ports, respectively, the controller being configured to acquire power supplied from a terminal apparatus connected to each of the M output ports, and output the acquired power supplied to the synchronous generator; The synchronous generator is also used for generating the ramp wave signal according to the acquired power supply and the frequency of the output current of the converter.
  7. 7. The power supply device according to claim 5 or 6, wherein the switch module comprises M branches, the M branches are connected with the M output ports in a one-to-one correspondence manner, each of the M branches comprises a plurality of control switches arranged in series, each of the plurality of control switches comprises a diode and a switch tube which are arranged in parallel, the conduction directions of at least part of the diodes in the same branch are opposite, and the control ends of the switch tubes are connected with the driver; the driver is specifically used for outputting the control signals according to the indication signals output by the M-1 comparators; The control signal comprises M first windows and at least one second window, wherein the first windows are used for controlling the conduction of each switching tube of one of the M branches, different first windows in the same period control different branches, the M first windows are determined according to the size relation between the reference signals output by the M-1 reference processors and the ramp signals, the second windows are arranged between two adjacent first windows, and the second windows are used for controlling the conduction of switching tubes which are not directly connected with the converter in the branches corresponding to the two adjacent first windows.
  8. 8. The power supply device according to claim 5 or 6, wherein the value of M is 2, the switch module comprises a first branch and a second branch, the first branch and the second branch are respectively connected with two output ports in a one-to-one correspondence manner, any one of the first branch and the second branch comprises a plurality of control switches arranged in series, each control switch in the plurality of control switches comprises a diode and a switch tube which are arranged in parallel, the conduction directions of at least part of the diodes in the same branch are opposite, and the control end of the switch tube is connected with the driver; the driver is specifically for: According to the indication signal, respectively outputting a second control signal for controlling the second switching tube in the first branch, a third control signal for controlling the first switching tube in the second branch and a fourth control signal for controlling the second switching tube in the second branch; wherein, in any period of the ramp signal, In a period of time when the ramp signal is smaller than the reference signal, the first control signal is used for controlling the first switching tube in the first branch to be conducted, the second control signal is used for controlling the second switching tube in the first branch to be conducted, the third control signal is used for controlling the first switching tube in the second branch to be disconnected, and the fourth control signal is used for controlling the second switching tube in the second branch to be disconnected; In a first preset time period from the moment when the ramp signal is equal to the reference signal, the first control signal is used for controlling the first switching tube in the first branch to be disconnected, the second control signal is used for controlling the second switching tube in the first branch to be connected, the third control signal is used for controlling the first switching tube in the second branch to be disconnected, and the fourth control signal is used for controlling the second switching tube in the second branch to be connected; And in the period from the first preset time period to the end time of the period, the first control signal is used for controlling the first switching tube in the first branch to be disconnected, the second control signal is used for controlling the second switching tube in the first branch to be disconnected, the third control signal is used for controlling the first switching tube in the second branch to be conducted, and the fourth control signal is used for controlling the second switching tube in the second branch to be conducted.
  9. 9. The power supply apparatus according to claim 4, wherein the signal generating unit includes a synchronous generator and M-1 reference processors; The input end of each reference processor in the M-1 reference processors is connected with one output port in the M-1 output ports, the output end of each reference processor is connected with the driver, and different reference processors in the M-1 reference processors are connected with different output ports in the M-1 output ports; The synchronous generator is used for generating a target signal according to the frequency of the output current of the converter, wherein the target signal is a square wave signal; Each reference processor is used for generating a reference signal according to an output signal of a connected output port, wherein the indication signal comprises the square wave signal and the reference signal, and the output signal comprises at least one of an output voltage and an output current; the driver is specifically configured to output the control signal based on the square wave signal and the reference signal.
  10. 10. The power supply apparatus according to any one of claims 5 to 9, wherein the converter comprises an output controller and an output switch, the output controller being configured to control the output switch such that the converter outputs a current when the output switch is on; The input end of the synchronous generator is connected with the output controller.
  11. 11. The power supply apparatus according to any one of claims 5 to 9, wherein the converter comprises an output controller and an output switch, the output controller being configured to control the output switch such that the converter outputs a current when the output switch is on; The input end of the synchronous generator is connected with the output switch.
  12. 12. The power supply device according to claim 9, wherein the switch module comprises M branches, the M branches are connected with the M output ports in a one-to-one correspondence manner, each of the M branches comprises a plurality of control switches arranged in series, each of the plurality of control switches comprises a diode and a switch tube which are arranged in parallel, the conduction directions of at least part of the diodes in the same branch are opposite, and the control end of the switch tube is connected with the driver; The driver is specifically used for outputting the control signals according to the reference signals output by the M-1 reference processors and the square wave signals; The control signal comprises M first windows and at least one second window, wherein the first windows are used for controlling the conduction of each switching tube of one of the M branches, different first windows in the same period are used for controlling different branches, the reference signal is used for representing the conduction time, the M first windows are used for determining according to the conduction time output by the M-1 reference processors and the square wave signal, the second windows are arranged between two adjacent first windows, and the second windows are used for controlling the conduction of switching tubes which are not directly connected with the converter in the branches corresponding to the two adjacent first windows.
  13. 13. The power supply device according to claim 9, wherein the value of M is 2, the switch module includes a first branch and a second branch, the first branch and the second branch are respectively connected with two output ports in one-to-one correspondence, any one of the first branch and the second branch includes a plurality of control switches arranged in series, each control switch of the plurality of control switches includes a diode and a switch tube arranged in parallel, the conduction directions of at least part of the diodes in the same branch are opposite, and the control end of the switch tube is connected with the driver; In any period of the square wave signal, the control signal is used for: when the square wave signal is in the time period of the conduction time represented by the reference signal, controlling the conduction of each switching tube of the first branch circuit, and controlling the disconnection of each switching tube of the second branch circuit; When the square wave signal is in a second preset time period after the conduction time, controlling switching tubes which are not directly connected with the converter in the first branch and the second branch to be conducted, and controlling switching tubes which are directly connected with the converter in the first branch and the second branch to be disconnected; and when the square wave signal is in the period from the second preset time period to the end time of the period, controlling the switching tubes of the second branch to be conducted and controlling the switching tubes of the first branch to be disconnected.
  14. 14. The power supply device according to any one of claims 4, 5, 6, 9, 10, 11, wherein the switch module includes M branches, the M branches are connected to the M output ports in a one-to-one correspondence manner, each of the M branches includes a plurality of control switches arranged in series, a control switch directly connected to the converter in the plurality of control switches of each branch is a first control switch, and a control switch not directly connected to the converter in the plurality of control switches of each branch is a second control switch; The first control switch comprises a diode and a switching tube which are arranged in parallel, wherein the positive electrode of the diode is connected with a second control switch in a branch, and the negative electrode of the diode is used for inputting current; The second control switch is connected with the driver, and the driver is particularly used for controlling the second control switch according to the indication signal.
  15. 15. The power supply apparatus according to any one of claims 5to 13, wherein one of the M-1 reference processors includes a first sampler and a second sampler connected in series, the first sampler being connected to a corresponding output port, the second sampler being connected to a first output port, the first output port being an output port of the M output ports that is not connected to the signal generating unit.
  16. 16. The power supply apparatus according to any one of claims 1 to 15, further comprising a feedback module connected to the converter, the feedback module further connected to at least one of the M output ports, the at least one output port including a first output port, the first output port being an output port of the M output ports that is not connected to the switch control module; The feedback module is used for outputting a feedback signal to the converter according to an output signal of the connected output port, wherein the output signal comprises at least one of output voltage and output current; the converter is used for adjusting the output current of the converter according to the feedback signal.
  17. 17. A power supply device as claimed in any one of claims 1-16, characterized in that the frequency of the control signal is 1/n times the frequency of the output current of the converter, n being a positive number.
  18. 18. A power supply control method applied to a power supply apparatus, characterized by comprising: Determining a control signal according to the output signals of M-1 output ports of M output ports and the frequency of the output current of the converter, wherein the frequency of the output current of the converter is used for determining the frequency of the control signal, and the output signals of the M-1 output ports are used for adjusting the conduction time of the converter and any one of the M output ports; According to the control signal, controlling the connection between the converter and the M output ports; The power supply device comprises a converter, a switch module, M output ports and a switch control module, wherein the switch module is respectively connected with the converter, the M output ports and the switch control module, control signals are determined by the switch control module, and the switch control module is connected with the M-1 output ports.
  19. 19. The power control method of claim 18, wherein determining the control signal based on the output signals of M-1 of the M output ports and the frequency of the output current of the inverter comprises: When the converter comprises an output controller and an output switch, the output controller is used for controlling the output switch, and the output switch is conducted and the converter outputs current, the control signal is determined according to the output signals of the M-1 output ports and the frequency of the output switch controlled by the output controller.
  20. 20. The power control method of claim 18, wherein determining the control signal based on the output signals of M-1 of the M output ports and the frequency of the output current of the inverter comprises: When the converter comprises an output controller and an output switch, the output controller is used for controlling the output switch, and the output switch is conducted and the converter outputs current, the control signal is determined according to the output signals of the M-1 output ports and the switching frequency of the output switch.

Description

Power supply equipment, power supply control method and power utilization system Technical Field The present application relates to the field of power technologies, and in particular, to a power supply device, a power supply control method, and an electricity consumption system. Background With the development of technology, the charger has been developed from one to two as a power supply device, and the charger having two output ports can simultaneously satisfy the charging of two terminal devices, so that the charging efficiency of the charger is very important. The charger may generally include an alternating current-direct current (ALTERNATING CURRENT TO DIRECT CURRENT, ACDC) converter, a switch 1 and a switch 2, wherein the ACDC converter is connected with a first output port of the charger through the switch 1 and is connected with a second output port of the charger through the switch 2, and when the on state of the switch 1 and the switch 2 is controlled, the control is generally implemented according to the magnitude relation between the instantaneous voltage of the first output port and the instantaneous voltage of the second output port, the instability of the instantaneous voltage can cause the change range of the switching frequency of the switch 1 and the switch 2 to be larger, and the lower the switching frequency, the larger the output ripple generated by the lower the switching frequency, the larger the output ripple is likely to be caused when the change range of the switching frequency is larger, so that the charging efficiency is reduced. Disclosure of Invention The application provides power supply equipment, a power supply control method and an electricity utilization system, which are used for reducing output ripple and improving power supply efficiency. In a first aspect, the embodiment of the application provides power supply equipment, which comprises a converter, a switch module, a switch control module and M output ports, wherein M is an integer larger than 1, the converter is connected with the switch module, the switch module is also respectively connected with the switch control module and the M output ports, the switch control module is also connected with M-1 output ports in the M output ports, the switch control module is used for outputting control signals to the switch module according to output signals of the M-1 output ports and the frequency of output current of the converter, the frequency of the output current of the converter is used for determining the frequency of the control signals, the output signals of the M-1 output ports are used for adjusting the conduction time of the converter and any one of the M output ports, and the switch module is used for controlling the connection of the converter and the M output ports according to the control signals. In this way, the output signals of the M-1 output ports are used for adjusting the conduction time of any one of the converter and the M output ports, so that the connection relation between the converter and the M output ports can be controlled, and the power supply equipment can output electric energy to the terminal equipment. The switching frequency of the switching module is the frequency of the control signal, and the frequency of the output current of the converter is used for determining the frequency of the control signal, so that the frequency of the output current of the converter is used for determining the switching frequency of the switching module, and compared with the instantaneous change of the switching frequency along with the output voltages of M output ports in the prior art, the switching frequency of the switching module can change along with the change of the frequency of the output current of the converter, so that the asynchronism degree of the switching frequency of the switching module and the frequency of the output current of the converter can be improved, the output ripple caused by superposition and mixing of the asynchronism frequency can be further reduced, the change range of the switching frequency of the switching module can be reduced, and the output ripple generated when the change range of the switching frequency is larger and the switching frequency is lower can be further reduced; the larger the output ripple is, the larger the current fluctuation and the voltage fluctuation caused during power supply are, so that the current fluctuation and the voltage fluctuation in the power supply process can be reduced by reducing the output ripple, the power supply efficiency can be improved, and the damage of a battery in the terminal equipment caused by the larger voltage fluctuation can be reduced. Optionally, the frequency of the control signal is 1/n times the frequency of the output current of the converter, n being a positive number, so that the range of variation of the switching frequency of the switching module can be reduced, thereby reducing the output ripple. Optionally,