Power supply system, electronic device, and electricity distribution method of electronic device

• US 9,935,467 B2
• Filed: 07/29/2015
• Issued: 04/03/2018
• Est. Priority Date: 01/30/2013
• Status: Active Grant

• Current Assignee: Huawei Technologies Co., Ltd. (Huawei Investment & Holding Co., Ltd.)
• Original Assignee: Huawei Technologies Co., Ltd. (Huawei Investment & Holding Co., Ltd.)
• Inventors: Deng, Zhiji
• Primary Examiner(s): Fureman, Jared
• Assistant Examiner(s): Yeshaw, Esayas
• Application Number:
  US14/812,491
• Publication Number:
  US 20150333526A1
• Time in Patent Office: 979 Days
• CPC Class Codes: G01R 21/133 by using digital technique
• CPC Class Codes: G06F 1/266 Arrangements to supply power to external peripherals either directly from the computer or under computer control, e.g. supply of power through the communication port, computer controlled power-strips
• CPC Class Codes: G06F 1/3206 Monitoring of events, devices or parameters that trigger a change in power modality
• CPC Class Codes: H02J 1/06 Two-wire systems
• CPC Class Codes: H02J 4/00 Circuit arrangements for mains or distribution networks not specified as ac or dc
• CPC Class Codes: H04L 12/10 Current supply arrangements

Abstract

A power supply system, an electronic device and an electricity distribution method, which can enhance, with maximum efficiency, power distribution of the electronic device. The power supply system includes a power source unit, an electricity distribution unit connected to the power source unit, a system load power supply unit connected to the electricity distribution unit, and a peripheral power supply unit connected to the electricity distribution unit. The electricity distribution unit includes a power consumption prediction module configured to detect system load power consumption and calculate a variation trend of the system load power consumption and a power consumption control module configured to adjust power supply capacities of the system load power supply unit and the peripheral power supply unit according to the variation trend of the system load power consumption.

Claims

1. A power supply system, comprising:

a power source unit;

an electricity distribution unit connected to the power source unit;

a system load power supply unit connected to the electricity distribution unit; and

a peripheral power supply unit connected to the electricity distribution unit, wherein the electricity distribution unit comprises;

a power consumption prediction module configured to;

detect a system load current and a current change rate of the system load current;

obtain a system load power consumption according to the system load current and the current change rate of the system load current that are detected;

identify a reference time unit;

calculate a predicted current after a passing of the reference time unit, according to a prediction formula, wherein the prediction formula is;

predicted current=the system load current+(the current change rate*the reference time unit); and

determine a variation trend of the system load power consumption, according to the predicted current that is calculated; and

a power consumption control module configured to adjust power supply capacities of the system load power supply unit and the peripheral power supply unit according to the variation trend of the system load power consumption.

2. The power supply system according to claim 1,

wherein the power consumption prediction module comprises:

a detection circuit configured to detect the system load current and the current change rate;

a time generation circuit configured to identify the reference time unit; and

a calculation circuit configured to calculate the predicted current; and

wherein the power consumption control module comprises;

a comparator circuit configured to;

set a reference current; and

compare the predicted current with the reference current; and

a control circuit configured to;

increase the power supply capacity of the system load power supply unit when the predicted current is greater than the reference current;

reduce the power supply capacity of the peripheral power supply unit when the predicted current is greater than the reference current;

reduce the power supply capacity of the system load power supply unit when the predicted current is not greater than the reference current; and

increase the power supply capacity of the peripheral power supply unit when the predicted current is not greater than the reference current.

3. The power supply system according to claim 2, wherein the detection circuit comprises:

a first resistor connected between an input end and an output end of the system load power supply unit and configured to collect the system load current;

a first operational amplifier having a negative input end connected to the input end of the system load power supply unit through a second resistor, a positive input end connected to the output end of the system load power supply unit through a third resistor, and an output end delivering a first voltage reflecting the system load current;

a fourth resistor having one end connected to the negative input end of the first operational amplifier and the other end connected to the output end of the first operational amplifier;

a fifth resistor having one end connected to the positive input end of the first operational amplifier and the other end connected to a ground;

a second operational amplifier having a positive input end connected to the ground through a sixth resistor, a negative input end connected to the output end of the first operational amplifier through a first capacitor, and an output end delivering a second voltage reflecting the current change rate; and

a seventh resistor having one end connected to the negative input end of the second operational amplifier and the other end connected to the output end of the second operational amplifier.

4. The power supply system according to claim 3, wherein the time generation circuit comprises:

a third operational amplifier having a positive input end connected to the output end of the second operational amplifier through an eighth resistor, a negative input end connected to the ground through a ninth resistor, and an output end delivering a third voltage reflecting the reference time unit;

a tenth resistor having one end connected to the positive input end of the third operational amplifier and the other end connected to the ground; and

an eleventh resistor having one end connected to the negative input end of the third operational amplifier and the other end connected to the output end of the third operational amplifier.

5. The power supply system according to claim 4, wherein the calculation circuit comprises:

a fourth operational amplifier having;

a positive input end that is connected to the output end of the third operational amplifier through a twelfth resistor, is connected to the output end of the first operational amplifier through a thirteenth resistor, and is connected to the ground through a fourteenth resistor;

a negative input end connected to the ground through a fifteenth resistor; and

an output end delivering a fourth voltage reflecting the predicted current; and

a sixteenth resistor having one end connected to the negative input end of the fourth operational amplifier and the other end connected to the output end of the fourth operational amplifier.

6. The power supply system according to claim 5, wherein the comparator circuit comprises a comparator, wherein the comparator has a positive input end connected to the ground through a preset power source, a negative input end connected to the output end of the fourth operational amplifier, and an output end delivering a result of a comparison of a reference voltage with the fourth voltage, and wherein the preset power source is configured to provide the reference voltage reflecting the reference current.

7. The power supply system according to claim 5, wherein the fourth operational amplifier is further configured to calculate the fourth voltage according to a fourth voltage formula, wherein the fourth voltage formula is:

the fourth voltage=k4*(the first voltage+the third voltage), and wherein k4 is a fourth amplification coefficient.

8. The power supply system according to claim 4, wherein the third operational amplifier is further configured to calculate the third voltage according to a third voltage formula, wherein the third voltage formula is:

the third voltage=k3*the second voltage, and wherein k3 is third amplification coefficient that is equal to the reference time unit.

9. The power supply system according to claim 3, wherein the first operational amplifier is further configured to calculate the first voltage according to a first voltage formula, wherein the first voltage formula is:

the first voltage=k1*the system load current, and wherein k1 is a first amplification coefficient.

10. The power supply system according to claim 3, wherein the second operational amplifier is further configured to calculate the second voltage according to a second voltage formula, wherein the second voltage formula is:

the second voltage=k2*the current change rate, and wherein k2 is a second amplification coefficient.

11. An electricity distribution method of an electronic device, comprising:

detecting a system load current and a current change rate of the system load current;

obtaining a system load power consumption, according to the system load current and the current change rate of the system load current that are detected;

identifying a reference time unit;

calculating a predicted current according to the system load current, the change rate of the system load current and the reference time unit, wherein the predicted current is calculated by adding the system load current to a product of the current change rate and the reference time unit;

according to the predicted current that is calculated, determining a variation trend of the system load power consumption; and

adjusting power supply capacities of a system load power supply unit and a peripheral power supply unit according to the variation trend of the system load power consumption.

12. The electricity distribution method according to claim 11, wherein adjusting power supply capacities of the system load power supply unit and the peripheral power supply unit according to the variation trend of the system load power consumption comprises:

setting a reference current;

comparing the predicted current with the reference current;

increasing the power supply capacity of the system load power supply unit when the predicted current is greater than the reference current;

reducing the power supply capacity of the peripheral power supply unit when the predicted current is greater than the reference current; and

reducing the power supply capacity of the system load power supply unit when the predicted current is not greater than the reference current; and

increasing the power supply capacity of the peripheral power supply unit when the predicted current is not greater than the reference current.

13. The electricity distribution method according to claim 11, further comprising:

calculating a first voltage according to a first voltage formula, wherein the first voltage formula is;

the first voltage=k1*the system load current, and wherein k1 is a first amplification coefficient; and

calculating a second voltage according to a second voltage formula, wherein the second voltage formula is;

the second voltage=k2*the current change rate, and wherein k2 is second amplification coefficient.

14. The electricity distribution method according to claim 13, wherein the method further comprising:

calculating a third voltage according to a third voltage formula, wherein the third voltage formula is;

the third voltage=k3*the second voltage, and wherein k3 is a third amplification coefficient that is equal to the reference time unit.

15. The electricity distribution method according to claim 14, further comprising:

calculating a fourth voltage according to a fourth voltage formula, wherein the fourth voltage formula is;

the fourth voltage=k4*(the first voltage+the third voltage), and wherein k4 is a fourth amplification coefficient.

16. A power supply system, comprising:

a processor; and

a non-transitory computer-readable storage medium coupled to the processor and storing programming instructions for execution by the processor, wherein the programming instructions instruct the processor to;

detect a system load current and a current change rate of the system load current;

obtain a system load power consumption according to the system load current and the current change rate of the system load current that are detected;

identify a reference time unit;

calculate a predicted current after a passing of the reference time unit, according to a prediction formula, wherein the prediction formula is;

predicted current=the system load current+(the current change rate*the reference time unit);

determine a variation trend of the system load power consumption, according to the predicted current that is calculated; and

adjust power supply capacities of a system load power supply unit and a peripheral power supply unit according to the variation trend of the system load power consumption.

17. The power supply system according to claim 16, wherein the programming instructions further instruct the processor to:

set a reference current; and

compare the predicted current with the reference current;

increase the power supply capacity of the system load power supply unit when the predicted current is greater than the reference current;

reduce the power supply capacity of the peripheral power supply unit when the predicted current is greater than the reference current;

reduce the power supply capacity of the system load power supply unit when the predicted current is not greater than the reference current; and

increase the power supply capacity of the peripheral power supply unit when the predicted current is not greater than the reference current.

18. The power supply system according to claim 16, wherein the programming instructions further instruct the processor to:

calculate a first voltage according to a first voltage formula, wherein the first voltage formula is;

the first voltage=k1*the system load current, and wherein k1 is first amplification coefficient; and

calculate a second voltage according to a second voltage formula, wherein the second voltage formula is;

the second voltage=k2*the current change rate, and wherein k2 is second amplification coefficient.

19. The power supply system according to claim 18, wherein the programming instructions further instruct the processor to:

calculate a third voltage according to a third voltage formula, wherein the third voltage formula is;

the third voltage=k3*the second voltage, and wherein k3 is third amplification coefficient that is equal to the reference time unit.

20. The power supply system according to claim 19, wherein the programming instructions further instruct the processor to:

calculate a fourth voltage according to a fourth voltage formula, wherein the fourth voltage formula is;

the fourth voltage=k4*(the first voltage+the third voltage), k4 is fourth amplification coefficient.