阅读说明：本技术 多电源管理系统及其操作方法 (Multi-power management system and method of operating the same ) 是由 林景祥 刘千里 糜自强 林医旬 于 2021-04-16 设计创作，主要内容包括：本发明提供一种多电源管理系统以及用于多电源管理系统的操作方法。多电源管理系统包括多个适配器以及电源供应电路。多个适配器分别提供多个电源。电源供应电路接收所述多个适配器的多个输入功率值,并依据所述多个输入功率值计算出所述多个适配器的多个输入功率值贡献比例。电源供应电路还依据所述多个电源的多个输出电流值的输出电流值总和以及所述多个输入功率值贡献比例以提供控制信号。所述多个适配器分别反应于控制信号调整所述多个输出电流值以及多个输出电压值。(The invention provides a multi-power management system and an operating method for the same. The multi-power management system comprises a plurality of adapters and a power supply circuit. The plurality of adapters respectively provide a plurality of power supplies. The power supply circuit receives a plurality of input power values of the plurality of adapters, and calculates a plurality of input power value contribution ratios of the plurality of adapters according to the plurality of input power values. The power supply circuit also provides a control signal according to the sum of the output current values of the power supplies and the contribution ratios of the input power values. The plurality of adapters respectively adjust the plurality of output current values and the plurality of output voltage values in response to a control signal.)

1. A multi-power management system, comprising:

a plurality of adapters respectively configured to provide a plurality of power sources; and

a power supply circuit, coupled to the plurality of adapters, configured to communicate with the plurality of adapters to receive a plurality of input power values of the plurality of adapters, calculate a plurality of input power value contribution ratios of the plurality of adapters according to the plurality of input power values, and provide corresponding control signals according to a sum of output current values of the plurality of power sources and the plurality of input power value contribution ratios,

wherein the plurality of adapters adjust the plurality of output current values and the plurality of output voltage values of the plurality of adapters in response to the control signal, respectively.

2. The multiple power management system of claim 1, wherein:

the plurality of adapters includes at least a first adapter and a second adapter,

the power supply circuit obtains a first input power value contribution proportion corresponding to the first adapter among the plurality of input power value contribution proportions,

the power supply circuit obtains the expected current value of the first adapter according to the first input power value contribution proportion and the sum of the output current values,

when the desired current value is greater than the output current value provided by the first adapter, the power supply circuit provides a control signal, and

the first adapter raises the output current value to the desired current value in response to the control signal.

3. The multiple power management system of claim 2 wherein said first adapter is responsive to said control signal to raise the value of the output voltage provided by said first adapter.

4. The multiple power management system of claim 2 wherein said second adapter pulls down an output voltage value provided by said second adapter in response to said control signal.

5. The multiple power management system of claim 1, wherein the power supply circuit comprises:

a first power supply controller configured to communicate with the plurality of adapters to receive the plurality of input power values; and

the power supply monitoring circuit is coupled to the first power supply controller and configured to provide the control signal according to the sum of the output current values and the input power value contribution ratios, and control the first power supply controller to provide the control signal to the adapters.

6. The multiple power management system of claim 5 wherein the power monitoring circuit is further configured to:

summing the plurality of output current values to produce the output current value sum, an

Generating the control signal according to a product of the input power value contribution ratios and the sum of the output current values.

7. The multiple power management system of claim 6 wherein the power monitoring circuit is further configured to:

summing the plurality of input power values to produce an input power value sum, an

Dividing a quotient obtained by dividing a first input power value of a first adapter of the plurality of adapters by the sum of the input power values to serve as a first input power value contribution proportion for the first adapter.

8. The multiple power management system of claim 5, wherein the power supply circuit further comprises:

the current sensors are coupled to the power monitoring circuit, respectively configured to correspond to the adapters, and respectively sense an output current value provided by the adapters.

9. The multiple power management system of claim 5, wherein a first adapter of the plurality of adapters comprises:

a second power supply controller configured to communicate with the first power supply controller to receive the control signal and transmit an input power value of the first adapter and an output current value of the first adapter.

10. The multiple power management system of claim 9, wherein the first adapter further comprises:

a power converter, coupled to the second power supply controller, configured to adjust an output current value of the first adapter and an output voltage value of the first adapter in response to the control signal.

11. The multiple power management system of claim 10, wherein the first adapter further comprises:

a current sensor coupled to the power monitoring circuit and the second power supply controller and configured to sense an output current value of the first adapter,

wherein the first adapter provides the output current value and the input power value of the first adapter to the first power supply controller via the second power supply controller.

12. The multiple power management system of claim 5, wherein the power supply circuit comprises:

a path controller, coupled to the plurality of adapters, configured to prevent power from each of the plurality of adapters from flowing to other adapters.

13. The multiple power management system of claim 1 wherein the power monitoring circuit is further configured to:

determining the input power values with the best efficiency according to the specifications and load requirements of the adapters,

wherein the plurality of input power value contribution ratios correspond to the distribution ratio having the optimal efficiency.

14. An operating method for a multi-power management system, the multi-power management system comprising a plurality of adapters and a power supply circuit, wherein the operating method comprises:

providing a plurality of power supplies by the plurality of adapters;

communicating, by the power supply circuit, with the plurality of adapters to receive a plurality of input power values of the plurality of adapters;

calculating, by the power supply circuit, a plurality of input power value contribution ratios of the plurality of adapters according to the plurality of input power values;

providing, by the power supply circuit, a corresponding control signal according to an output current value sum of a plurality of output current values of the plurality of power supplies and the plurality of input power value contribution ratios; and

adjusting, by the plurality of adapters, the plurality of output current values and the plurality of output voltage values of the plurality of adapters in response to the control signal, respectively.

15. The operating method according to claim 14, characterized in that:

the plurality of adapters includes at least a first adapter and a second adapter,

the step of providing the corresponding control signal according to the sum of the output current values of the power supplies and the contribution ratios of the input power values comprises:

obtaining a desired current value for the first adapter as a function of a first one of the plurality of input power value contribution ratios corresponding to the first adapter and the sum of the output current values; and

the power supply circuit provides a control signal when the desired current value is greater than the output current value provided by the first adapter.

16. The method of operation of claim 15, wherein the step of adjusting the plurality of output current values and the plurality of output voltage values of the plurality of adapters in response to the control signal comprises:

raising, by the first adapter, the output current value to the desired current value in response to the control signal.

17. The method of operation of claim 16, wherein the step of adjusting the plurality of output current values and the plurality of output voltage values of the plurality of adapters in response to the control signal further comprises:

raising, by the first adapter, an output voltage value provided by the first adapter in response to the control signal.

18. The method of operation of claim 16, wherein the step of adjusting the plurality of output current values and the plurality of output voltage values of the plurality of adapters in response to the control signal further comprises:

pulling down, by the second adapter, an output voltage value provided by the second adapter in response to the control signal.

19. The method of claim 14, wherein the step of providing the corresponding control signal according to the sum of the output current values of the power supplies and the input power value contributions comprises the steps of:

summing the plurality of output current values to produce the output current value sum; and

generating the control signal according to a product of the input power value contribution ratios and the sum of the output current values.

20. The method of claim 19, wherein calculating the plurality of input power value contributions for the plurality of adapters based on the plurality of input power values comprises:

summing the plurality of input power values to produce an input power value sum; and

dividing a quotient obtained by dividing a first input power value of a first adapter of the plurality of adapters by the sum of the input power values to serve as a first input power value contribution proportion for the first adapter.

21. The method of operation of claim 14, further comprising:

determining, by the power supply circuit, the plurality of input power values with optimal efficiency according to a plurality of specifications of the plurality of adapters and load requirements,

wherein the plurality of input power value contribution ratios correspond to the distribution ratio having the optimal efficiency.

Technical Field

The present invention relates to a power management system and an operating method for the power management system, and more particularly, to a multi-power management system and an operating method for the multi-power management system.

Background

Generally, an electronic device with high power requirement (such as a notebook computer for electronic competitions) employs a power supply mechanism suitable for a high-power adapter. However, the architecture of the power adapter suitable for high power is complicated. In addition, the electronic device with high power requirement has the application with low power requirement. The design of the power supply mechanism for a single power adapter can be quite difficult to meet with multiple power requirements.

Disclosure of Invention

The present invention provides a multi-power management system and an operating method for the same, which can provide a large power and achieve power supply balance of a plurality of power sources.

The multi-power management system of the invention comprises a plurality of adapters and a power supply circuit. The plurality of adapters respectively provide a plurality of power supplies. The power supply circuit is coupled to the plurality of adapters. The power supply circuit is communicated with the adapters to receive a plurality of input power values of the adapters, and calculates a plurality of input power value contribution ratios of the adapters according to the plurality of input power values. The power supply circuit also provides a control signal according to the sum of the output current values of the power supplies and the contribution ratios of the input power values. The plurality of adapters adjust the plurality of output current values and the plurality of output voltage values of the plurality of adapters in response to control signals, respectively.

The invention relates to an operating method for a multi-power management system. The multi-power management system comprises a plurality of adapters and a power supply circuit. The operation method comprises the following steps: providing a plurality of power supplies by the plurality of adapters; communicating, by a power supply circuit, with the plurality of adapters to receive a plurality of input power values of the plurality of adapters; calculating a plurality of input power value contribution ratios of the plurality of adapters by the power supply circuit according to the plurality of input power values; providing a corresponding control signal by a power supply circuit according to the sum of output current values of a plurality of output current values of the plurality of power supplies and the contribution ratios of the plurality of input power values; and adjusting, by the plurality of adapters, the plurality of output current values and the plurality of output voltage values of the plurality of adapters in response to control signals, respectively.

Based on the above, the multi-power management system of the invention includes a plurality of adapters and a power supply circuit. The power supply circuit calculates a plurality of input power value contribution ratios of the plurality of adapters according to the plurality of input power values, and provides corresponding control signals according to the sum of the output current values and the plurality of input power value contribution ratios. The plurality of adapters adjust the plurality of output current values and the plurality of output voltage values of the plurality of adapters in response to control signals, respectively. As such, the multi-power management system is able to provide greater power and achieve power balance among multiple adapters.

In order to make the aforementioned and other features and advantages of the invention more comprehensible, embodiments accompanied with figures are described in detail below.

Drawings

Fig. 1 is a schematic diagram showing a multiple power management system according to a first embodiment of the present invention;

FIG. 2 is a method flow diagram illustrating a method of operation according to one embodiment of the present invention;

FIG. 3 is a method flow diagram illustrating a method of operation according to another embodiment of the present invention;

fig. 4 is a schematic diagram showing a multiple power management system according to a second embodiment of the present invention;

fig. 5 is a schematic diagram showing a multiple power management system according to a third embodiment of the present invention;

fig. 6 is a schematic diagram showing a multiple power management system according to a fourth embodiment of the present invention.

Description of the reference numerals

100. 200, 300, 400: a multi-power management system;

110_1, 110_2, 210_1, 210_2, 310_1, 310_2, 410_1, 410_ 2: an adapter;

120. 220, 320, 420: a power supply circuit;

221. 321, 421: a power supply controller of the power supply circuit;

222. 322, 422: a power supply monitoring circuit;

323. 423: a path controller;

324. 325: a current sensor of the power supply circuit;

411_1, 411_ 2: a power converter;

412_1, 412_ 2: a current sensor of the adapter;

413_1, 413_ 2: a power supply controller of the adapter;

i _1, I _ 2: outputting a current value;

p _1, P _ 2: a power source;

PIN _1, PIN _ 2: inputting a power supply;

PO: an output power supply;

SC1, SC 2: a control signal;

s110 to S150: a step of;

s201 to S211: and (5) carrying out the following steps.

Detailed Description

Reference will now be made in detail to exemplary embodiments of the invention, examples of which are illustrated in the accompanying drawings. Wherever possible, the same reference numbers will be used throughout the drawings and the description to refer to the same or like parts.

Referring to fig. 1 and fig. 2, fig. 1 is a schematic diagram of a multi-power management system according to a first embodiment of the invention. FIG. 2 is a flow chart of a method of operation according to an embodiment of the present invention. The multi-power management system 100 can be adapted to provide an output power PO to an electronic device (e.g., a notebook computer, a personal computer). In the present embodiment, the multiple power management system 100 includes adapters 110_1, 110_2 and a power supply circuit 120. In step S110, the adapters 110_1, 110_2 supply power P _1, P _ 2. For example, the adapter 110_1 receives an input power PIN _1 and provides power P _ 1. The adapter 110_2 receives an input power supply PIN _2 and provides power supply P _ 2. The power supplies P _1, P _2 may be considered as converted power supplies. In the present embodiment, the power supply circuit 120 is coupled to the adapters 110_1 and 110_ 2. The power supply circuit 120 may be provided inside or outside the electronic device. The power supply circuit 120 receives the power supplies P _1 and P _2 and provides an output power PO. The power value of the output power PO is substantially equal to the sum of the power values of the power supplies P _1 and P _ 2.

In the present embodiment, the power supply circuit 120 communicates with the adapters 110_1 and 110_ 2. The power supply circuit 120 receives the input power values of the adapters 110_1, 110_2 in step S120. In step S130, the power supply circuit 120 calculates the input power value contribution ratio of the adapter 110_1 and the input power value contribution ratio of the adapter 110_2 according to the input power values of the adapters 110_1 and 110_ 2. In step S140, the power supply circuit 120 provides one of the control signals SC1, SC2 according to the sum of the output current values of the power supplies P _1, P _2 and the contribution ratios of the input power values of the adapters 110_1, 110_ 2.

In the present embodiment, the adaptor 110_1 adjusts the output current value and the output voltage value of the adaptor 110_1 in response to one of the control signals SC1 and SC2 in step S150. The adapter 110_2 adjusts the output current value and the output voltage value of the adapter 110_2 in response to one of the control signals SC1 and SC 2.

It should be noted that in the multi-power management system 100, the adapters 110_1 and 110_2 provide the power supplies P _1 and P _ 2. The power supply circuit 120 provides an output power PO. The power value of the output power PO is substantially equal to the sum of the power values of the power supplies P _1 and P _ 2. As such, the multi-power management system 100 can provide a larger power. In addition, the power supply circuit 120 calculates a plurality of input power value contribution ratios of the adapters 110_1 and 110_2, and provides corresponding control signals according to the sum of the output current values and the input power value contribution ratios of the adapters 110_1 and 110_ 2. The adapters 110_1 and 110_2 respectively adjust the output current value and the output voltage value in response to one of the control signals SC1 and SC 2. In this way, the multi-power management system 100 can achieve power balance of the adapters 110_1 and 110_ 2.

For convenience of explanation, the present embodiment takes two adapters 110_1 and 110_2 as an example. The number of adapters of the present invention may be plural, and is not limited to this embodiment.

For further example, referring to fig. 1 and fig. 3 together, fig. 3 is a flowchart illustrating a method of operation according to another embodiment of the present invention. In step S201, the adapters 110_1, 110_2 supply power P _1, P _ 2. In step S202, the power supply circuit 120 receives the input power values of the adapters 110_1, 110_ 2. In step S203, the power supply circuit 120 calculates the input power value contribution ratio of the adapter 110_1 and the input power value contribution ratio of the adapter 110_2 according to the input power values of the adapters 110_1 and 110_ 2. For example, the input power value contribution ratio of the adapter 110_1 is a first quotient obtained by dividing the input power of the adapter 110_1 by the sum of the input power values of the adapters 110_1, 110_ 2. The input power value contribution ratio of the adapter 110_2 is a second quotient obtained by dividing the input power value of the adapter 110_2 by the sum of the input powers of the adapters 110_1, 110_ 2.

In step S204, taking the control of the adapter 110_1 as an example, the power supply circuit 120 obtains a desired current value corresponding to the adapter 110_1 according to the input power value contribution ratio and the output current value sum of the adapter 110_1 (i.e., the first adapter). In the present embodiment, the sum of the output current values is the sum of the output current value of the adapter 110_1 and the output current value of the adapter 110_ 2. The desired current value for adapter 110_1 is the product of the sum of the output current values and the proportion of the input power value contribution of adapter 110_ 1. After calculating the desired current value of the adapter 110_1, the power supply circuit 120 determines in step S205 whether the desired current value of the adapter 110_1 is greater than the output current value provided by the adapter 110_ 1. When the expected current value of the adapter 110_1 is determined to be greater than the output current value provided by the adapter 110_1, the power supply circuit 120 provides the control signal SC1 (i.e., the first control signal). Next, the adapter 110_1 raises the output current value to the desired current value of the adapter 110_1 in response to the control signal SC1 in step S206. In step S207, the output voltage of the adapter 110_1 is also raised in response to the control signal SC 1. After step S207, the operation method returns to step S201.

In some embodiments, the output voltage of the adaptor 110_2 is pulled down in response to the control signal SC1 in step S207. In some embodiments, in response to the control signal SC1, the output voltage of the adaptor 110_1 is raised, and the output voltage of the adaptor 110_1 is pulled down.

Referring back to step S205, when the desired current value of the adapter 110_1 is determined to be less than or equal to the output current value provided by the adapter 110_1, the power supply circuit 120 determines in step S208 whether the desired current value of the adapter 110_1 is less than the output current value provided by the adapter 110_ 1. When the desired current value of the adapter 110_1 is determined to be less than the output current value provided by the adapter 110_1, the power supply circuit 120 provides the control signal SC2 (i.e., the second control signal). Next, the adaptor 110_1 pulls down the output current value to the desired current value of the adaptor 110_1 in reaction to the control signal SC2 in step S209. In step S210, the output voltage of the adapter 110_1 is also pulled down in response to the control signal SC 2. After step S210, the operation method returns to step S201.

In some embodiments, the output voltage value of the adapter 110_2 is raised in response to the control signal SC2 in step S210. In some embodiments, in response to the control signal SC2, the output voltage of the adaptor 110_1 is pulled down, and the output voltage of the adaptor 110_1 is raised.

Referring back to step S208, when the desired current value of the adapter 110_1 is determined to be not less than the output current value provided by the adapter 110_1, this means that the desired current value of the adapter 110_1 is substantially equal to the output current value provided by the adapter 110_ 1. The power supply circuit 120 does not provide the control signals SC1, SC2 in step S211. Therefore, in step S211, the power supplies P _1 and P _2 of the adapters 110_1 and 110_2 are not adjusted. After step S211, the operation method returns to step S201.

Referring to fig. 4, fig. 4 is a schematic diagram illustrating a multi-power management system according to a second embodiment of the invention. In the present embodiment, the multiple power management system 200 includes adapters 210_1, 210_2 and a power supply circuit 220. The power supply circuit 220 includes a power supply controller 221 and a power monitoring circuit 222. In the present embodiment, the power supply controller 221 communicates with the adapters 210_1 and 210_2 to receive the input power values of the adapters 210_1 and 210_ 2. In the present embodiment, the power supply controller 221 can communicate with the adapters 210_1 and 210_2 through a wired communication method or a wireless communication method known to those skilled in the art. In this embodiment, the power supply controller 221 may also receive the output current values of the adapters 210_1, 210_ 2.

In the present embodiment, the power monitoring circuit 222 is coupled to the power controller 221. The power monitoring circuit 222 provides a control signal (i.e., one of the control signals SC1, SC 2) according to the sum of the output current values and the contribution ratios of the plurality of input power values, and controls the power supply controller 221 to provide the control signal to the adapters 210_1, 210_ 2. In this embodiment, the power monitoring circuit 222 sums the input power value of the adapter 210_1 and the input power value of the adapter 210_2 to generate a sum of the input power values. The power supply monitoring circuit 222 divides the input power value of the adapter 210_1 by the sum of the input power values to obtain a quotient as the input power value contribution ratio of the adapter 210_ 1. Similarly, the power supply monitoring circuit 222 may also divide the input power value of the adapter 210_2 by the sum of the input power values to obtain a quotient, which is used as the input power value contribution ratio of the adapter 210_ 2. The power monitoring circuit 222 sums the output current values of the adapters 210_1, 210_2 to generate an output current value sum. Next, the power monitoring circuit 222 generates the control signals SC1, SC2 according to the product of the input power value contribution ratio and the sum of the output current values of the adapters 210_1, 210_ 2. In the present embodiment, the power monitoring circuit 222 is, for example, a Programmable general purpose or special purpose Microprocessor (Microprocessor), a Digital Signal Processor (DSP), a Programmable controller, an Application Specific Integrated Circuit (ASIC), a Programmable Logic Device (PLD), or other similar devices or combinations thereof, which can load and execute computer programs.

For example, in the present embodiment, the power monitoring circuit 222 knows that the input power value of the adapter 210_1 is 100 watts and the input power value of the adapter 210_2 is 60 watts through the power supply controller 221. The power monitoring circuit 222 sums the input power values of the adapters 210_1, 210_2 to produce a sum of input power values (i.e., 160 watts). Next, the power supply monitoring circuit 222 obtains the input power value contribution ratio of the adapter 210_1 as 0.625. The power supply monitoring circuit 222 also obtains the input power value contribution ratio of the adapter 210_2 as 0.375. In this example, the input power values of the adapters 210_1, 210_2 correspond to the distribution ratios with the best efficiency. In this case, the power monitoring circuit 222 knows that the output current value of the adapter 210_1 is 2.2 amperes and the output current value of the adapter 210_2 is 2.8 amperes through the power controller 221. Therefore, the power monitoring circuit 222 will obtain the sum of the output current values of the adapter 210_1 (i.e., 5 amps). Next, the power monitoring circuit 222 will know that the expected current value of the adapter 210_1 is equal to 3.125 amperes, and know that the expected current value of the adapter 210_2 is equal to 1.875 amperes.

In addition, in this example, the adapters 210_1 and 210_2 have a voltage characteristic curve in terms of specification, for example. The output voltage characteristic curve of the adapter 210_1 is 20.5 volts at no-load and 19.5 volts at full-load. The output voltage characteristic curve of the adapter 210_2 is 20.5 volts for unloaded output voltage and 20 volts for full output voltage. The adapters 210_1, 210_2 are coupled such that the voltage crosses 19.8 volts. That is, the output voltages of the adapters 210_1, 210_2 are 19.8 volts, respectively. Thus, the sum of the output power values of the adapters 210_1, 210_2 is equal to 99 watts. That is, the output power PO has a power value of approximately 99 w. It should be noted that the output power value of the adapter 210_1 is 0.44 of the sum of the output power values. Such a result is clearly a significant drop off from the input power value contribution ratio of adapter 210_1 (i.e., 0.625). In addition, the output power value of the adapter 210_2 is 0.56 of the sum of the output power values. Such a result is clearly a significant drop off from the input power value contribution ratio of adapter 210_2 (i.e., 0.375). That is, the adapters 210_1, 210_2 have not yet achieved power balance.

The power monitoring circuit 222 determines that the expected current value (3.125 amps) of the adapter 210_1 is greater than the output current value (2.2 amps) of the adapter 210_ 1. Thus, the power monitor circuit 222 provides the control signal SC1 to the adapter 210_ 1. The adapter 210_1 will raise the output current value of the adapter 210_1 to the desired current value of the adapter 210_1 in response to the control signal SC 1. In addition, the adapter 210_1 also raises the output voltage of the adapter 210_1 in response to the control signal SC1 such that the voltages of the adapter 210_1 and the adapter 210_2 coupled to each other intersect at 20.25 volts. That is, the output voltages of the adapters 210_1, 210_2 are 20.25 volts, respectively. Thus, the sum of the output power values of the adapters 210_1, 210_2 is equal to 99 watts. That is, the output power PO has a power value of approximately 99 w.

In addition, another adjustment method can reduce the output voltage to achieve the same power supply balance. The power monitoring circuit 222 determines that the desired current value (1.875 amps) of the adapter 210_2 is less than the output current value (2.8 amps) of the adapter 210_ 2. Thus, the power monitor circuit 222 provides the control signal SC2 to the adapter 210_ 2. The adapter 210_2 will pull down the output current value of the adapter 210_2 to the desired current value of the adapter 210_2 in response to the control signal SC 2. In addition, the adapter 210_2 also pulls down the output voltage of the adapter 210_2 in response to the control signal SC2, so that the voltage intersection of the adapters 210_1 and 210_2 is pulled down from 19.8 volts to 19.75 volts. Thus, the sum of the output power values of the adapters 210_1, 210_2 is equal to 99 watts. That is, the output power PO has a power value of approximately 99 w.

It should be noted that in this example, after the output current value and the output voltage value of the adapter 210_1 are adjusted, the output power value of the adapter 210_1 is 61.875 watts. After the output current value and the output voltage value of the adapter 210_2 are adjusted, the output power value of the adapter 210_2 is 37.125 watts. The output power value of adapter 210_1 is 0.625 of the sum of the output power values. Such a result is clearly similar to the input power value contribution ratio of adapter 210_1 (i.e., 0.625). In addition, the output power value of the adapter 210_2 is 0.375 of the sum of the output power values. Such a result is clearly similar to the input power value contribution ratio (i.e., 0.375) of adapter 210_ 2. That is, the adapters 210_1, 210_2 achieve power supply balancing. It should also be noted that, as mentioned previously, the input power values of the adapters 210_1, 210_2 would correspond to the distribution ratios with the best efficiency. The input power value contribution ratios of the adapters 210_1, 210_2 correspond to the distribution ratios with the best efficiency. That is, the output power of the adapters 210_1, 210_2 is adjusted to correspond to the distribution ratio with the best efficiency. Thus, the multi-power management system 200 is adjusted to provide the output power with the best efficiency.

The details of the implementation to obtain the input power value with the best efficiency are illustrated next. Please refer to table 1, table 2 and fig. 4. Table 1 is a table of load versus efficiency for the adapters 210_1, 210_ 2. Table 2 is a table of input power values for the adapters 210_1, 210_2 based on fixed load demands.

Table 1:

percentage of load	Efficiency of adapter 210_1	Efficiency of adapter 210_2
			20％	91％	89％
40％	93％	92％
			60％	95％	96％
80％	94％	95％
			100％	94％	95％

Table 2:

in this embodiment, the power supplies P _1, P _2 provided by the adapters 210_1, 210_2 each have an input power value of 150 watts. Based on the specifications of the adapters 210_1, 210_2, the adapters 210_1, 210_2 may have different efficiencies at different loads. In the present embodiment, when the load of the adaptor 210_1 is 20% (i.e., the output power is 30 watts), the efficiency of the adaptor 210_1 is 91% (i.e., the input power value is about 32.96 watts). When the load of adapter 210_1 is 40% (i.e., output power is 60 watts), the efficiency of adapter 210_1 is 93% (i.e., input power value is about 64.52 watts), and so on. Similarly, when the load of the adapter 210_2 is 20% (i.e., output power is 30 watts), the efficiency of the adapter 210_2 is 89% (i.e., input power value is about 33.71 watts). When the load of the adapter 210_2 is 40% (i.e., output power is 60 watts), the efficiency of the adapter 210_2 is 92% (i.e., input power value is about 65.22 watts), and so on.

In table 2, the input power value can be obtained by equation (1):

PIN ═ POUT × PLD)/EFF … … … … … … … … … … … formula (1)

The PIN is represented as an input power value for the adapters 210_1, 210_ 2. POUT is represented as the output power value of the adapters 210_1, 210_ 2. The PLD is represented as a load percentage of the adapters 210_1, 210_ 2. Further, the EFF is represented as the efficiency of the adapters 210_1, 210_ 2. For example, when the load of the adapter 210_1 is 20%, the input power value of the adapter 210_1 is 32.97 watts (i.e., PIN ═ (150 × 20%)/91%).

In this embodiment, when the load demand is 180 watts, table 2 would be established based on a fixed load demand (i.e., 180 watts). A total of 5 combinations are listed in table 2. In table 2, the first column shows a first combination of 20% load of adapter 210_1 and 100% load of adapter 210_ 2. The second column shows a second combination of 40% loading of adapter 210_1 and 80% loading of adapter 210_2, and so on. In table 2, it can be found that the sum of the input power values in the first combination is the lowest. That is, the third combination only requires 188.49 watts of total input power to achieve a load demand of 180 watts. Thus, the combination of adapter 210_1 at an input power value of 94.74 watts and adapter 210_2 at an input power value of 93.75 watts would have the best efficiency (i.e., 95%) based on a load demand of 180 watts.

Referring to fig. 5, fig. 5 is a schematic diagram illustrating a multi-power management system according to a third embodiment of the invention. In the present embodiment, the multi-power management system 300 includes adapters 310_1 and 310_2 and a power supply circuit 320. The power supply circuit 320 includes a power supply controller 321, a power supply monitoring circuit 322, a path controller 323, and current sensors 324, 325. In the present embodiment, the power supply controller 321 communicates with the adapters 310_1 and 310_2 to receive the input power values of the adapters 310_1 and 310_ 2. In the present embodiment, the cooperation between the adapters 310_1, 310_2, the power supply controller 321 and the power monitoring circuit 322 can obtain sufficient teaching in the embodiment of fig. 4, and therefore, the description thereof is omitted.

In the present embodiment, the current sensors 324 and 325 are coupled to the power monitoring circuit 322. The current sensors 324 and 325 correspond to the adapters 310_1 and 310_2, respectively, and sense output current values I _1 and I _2 provided by the corresponding adapters 310_1 and 310_2, respectively. For example, the current sensor 324 corresponds to the adaptor 310_ 1. The current sensor 324 senses the output current value I _1 provided by the adapter 310_ 1. That is, the current sensor 324 senses the output current value I _1 of the power P _ 1. The current sensor 324 also provides an output current value I _1 to the power supply monitoring circuit 322. The current sensor 325 corresponds to the adapter 310_ 2. The current sensor 325 senses the output current value I _2 provided by the adapter 310_2, that is, the current sensor 325 senses the output current value I _2 of the power supply P _ 2. The current sensor 325 also provides an output current value I _2 to the power supply monitoring circuit 322. In the present embodiment, the current sensors 324 and 325 are provided outside the power supply monitoring circuit 322. In some embodiments, the current sensors 324, 325 may be disposed internal to the power supply monitoring circuit 322.

In the present embodiment, the path controller 323 is coupled to the current sensors 324 and 325. The path controller 323 receives power supplies P _1, P _2 via the current sensors 324, 325. The path controller 323 provides the output power PO according to the power P _1, P _ 2. In addition, path controller 323 also prevents power P _1 from flowing to current sensor 325 or adapter 310_2 and prevents power P _2 from flowing to current sensor 324 or adapter 310_ 1. In the present embodiment, the path controller 323 is provided outside the power supply monitoring circuit 322. In some embodiments, the path controller 323 may be disposed inside the power supply monitoring circuit 322.

Referring to fig. 6, fig. 6 is a schematic diagram illustrating a multi-power management system according to a fourth embodiment of the invention. In the present embodiment, the multiple power management system 400 includes adapters 410_1, 410_2 and a power supply circuit 420. The power supply circuit 420 includes a power supply controller 421, a power monitoring circuit 422, and a path controller 423. In the present embodiment, the cooperation between the adapters 410_1, 410_2, the power supply controller 421 and the power monitoring circuit 422 can obtain sufficient teaching in the embodiments of fig. 4 and 5, and therefore, the detailed description thereof is omitted.

In the present embodiment, the path controller 423 is coupled to the adapters 410_1 and 410_ 2. The path controller 423 provides the output power PO according to the power P _1 and P _ 2. In addition, path controller 423 also prevents power P _1 from flowing to adapter 310_2 and prevents power P _2 from flowing to adapter 410_ 1.

In the present embodiment, the adapter 410_1 includes a power converter 411_1, a current sensor 412_1, and a power supply controller 413_ 1. The power supply controller 413_1 communicates with the power supply controller 421 of the power supply circuit 420 and receives one of the control signals SC1 and SC 2. The power converter 411_1 is coupled to the power controller 413_ 1. The power converter 411_1 adjusts the output current value I _1 and the output voltage value of the adapter 410_1 in response to one of the control signals SC1 and SC 2. The current sensor 412_1 is coupled to the power monitoring circuit 422 and the power controller 413_ 1. The current sensor 412_1 senses an output current value I _1 of the adapter 410_ 1.

In this embodiment, the adapter 410_1 may also transmit the output current value I _1 and the input power value of the adapter 410_1 to the power supply controller 421 via the power supply controller 413_ 1. Therefore, the power supply monitoring circuit 422 can know the output current value I _1 and the input power value of the adapter 410_ 1.

In the present embodiment, the adapter 410_2 includes a power converter 411_2, a current sensor 412_2, and a power supply controller 413_ 2. Implementation details of the power converter 411_2, the current sensor 412_2, and the power supply controller 413_2 may be sufficiently taught by the above implementation of the adapter 410_ 1. And therefore, will not be reiterated here.

In the present embodiment, the power supply controller 421 of the power supply circuit 420 can perform wired communication or wireless communication with the power supply controller 413_1 of the adapter 410_1 and the power supply controller 413_2 of the adapter 410_ 2.

In some embodiments, the power supply circuit 420 can disable or enable the adapter 410_1 through communication between the power controllers 421 and 413_ 1. Similarly, the power supply circuit 420 can disable or enable the adapter 410_2 through communication between the power controllers 421 and 413_ 2.

In summary, the multi-power management system of the invention includes a plurality of adapters and a power supply circuit. The plurality of adapters provide a plurality of power sources. The power supply circuit provides output power. The power level of the output power is substantially equal to the sum of the power levels of the power supplies. Thus, the multi-power management system can provide larger power. In addition, the power supply circuit can calculate a plurality of input power value contribution ratios of the plurality of adapters according to a plurality of input power values of the plurality of adapters, and provide corresponding control signals according to a sum of the output current values and the plurality of input power value contribution ratios. The plurality of adapters adjust the plurality of output current values and the plurality of output voltage values of the plurality of adapters in response to the control signal, respectively. In this way, the multi-power management system can also achieve power balance among the multiple adapters.

Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; while the invention has been described in detail and with reference to the foregoing embodiments, it will be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; and the modifications or the substitutions do not make the essence of the corresponding technical solutions depart from the scope of the technical solutions of the embodiments of the present invention.