CN1641963A - Power soure management and control method and device for power source supply device - Google Patents

Power soure management and control method and device for power source supply device Download PDF

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Publication number
CN1641963A
CN1641963A CN 200410015069 CN200410015069A CN1641963A CN 1641963 A CN1641963 A CN 1641963A CN 200410015069 CN200410015069 CN 200410015069 CN 200410015069 A CN200410015069 A CN 200410015069A CN 1641963 A CN1641963 A CN 1641963A
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China
Prior art keywords
load
power supply
supply unit
total output
output current
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CN 200410015069
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Chinese (zh)
Inventor
李荣钟
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Mitac Computer Shunde Ltd
Shunda Computer Factory Co Ltd
Getac Technology Corp
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Mitac Computer Shunde Ltd
Mitac Technology Corp
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Priority to CN 200410015069 priority Critical patent/CN1641963A/en
Publication of CN1641963A publication Critical patent/CN1641963A/en
Pending legal-status Critical Current

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Abstract

The invention relates to power supply management and control method and the device to solve the problem existing in the current electric device that cannot take optimization power supply management and control. And it can also solve the problem of the weak safety of power supply. The controller controls the switch state of the load circuit path, when the actual current exceeds or is to exceed the preset rating total output current, the controller temporary stops the current flowing to at least one load according to priority. When the actual current is less that preset value, restarts the load according to the priority. The invention would be used as a protection device for power supply of electric device or electric device itself.

Description

The power management of power supply unit and control method and device
Technical field
The present invention is about a kind of control technology of power-supply system, particularly about a kind of power management and control method and device of power supply unit.
Background technology
Because science and technology is maked rapid progress, and makes various electronic equipments constantly develop.In order to guarantee the normal operation of electronic equipment, must supply working power up to specification to this electronic equipment by power supply unit.The ancillary equipment that the function of electronic equipment is strong more, speed is fast more, cooperate is many more, and then the electric energy of its consumption is also big more.
The design of more early stage power supply unit as long as can supply electric energy to electronic equipment, is not paid attention to the management of power supply especially.Yet, because the generally use of portable electronic device makes that the power management of power supply unit and control are day by day important.And aspect Safety Design, be the overcurrent protection assembly that is used as load system with fuse in the more early stage electric equipment.In case when the situation of overcurrent takes place, come directly the power supply that is supplied to load to be cut off by blowout.
Though in the computer equipment or portable computer that generally use at present, in its ROM-BIOS, designed the function that power management is arranged, for example after the user does not use computer to reach a scheduled time, be about to a certain device (for example screen, disc driver ... Deng) closed or entered resting state, by reaching the purpose of saving electric energy like this, but this kind technology only is the part device of to save electric energy and closing unnecessary running in order to reach, and can't reach at the management of load current or the management of current overload.
In the prior art, do not see the technology of the management that has any device to possess load current or current overload management, so necessity is designed a kind of technology that possesses power management and control, further to reach the safety in utilization of electronic equipment.
In addition; to existing sophisticated electronics; because its System Operation relates to the transmission reception of signal and the access of data through regular meeting; so can not take known technology directly the mode of power cut-off to be reached security purpose, more especially need store the significant data or the computer server of archives.But with present portable computer, power supply unit not only will provide the charging of battery also will supply with the running of whole system, so power supply unit need continue to supply enough electric currents to the load in each system, but uses too jumbo power supply unit to need to spend bigger cost again.If can adopt suitable power management and control technology, then can make power supply unit reach best power supply situation, can reach purpose of safety again.
Summary of the invention
Main purpose of the present invention provides a kind of power management and control method of power supply unit, by suitable power management and control, make power supply unit detecting load current when surpassing default nominal load current or default specified tolerance during current value, can suspend in good time and supply power to partly load, and when load current surpasses default nominal load current, then start the part load of originally temporarily being stopped power supply again in good time.
Another object of the present invention provides a kind of power management and control device of power supply unit, come the situation of monitoring load electric current by a controller, when surpassing default nominal load current with the total load current of being supplied at power supply unit, can suspend in good time and supply power to partly load, and when load current surpasses default nominal load current, then start the part load of originally temporarily being stopped power supply again in good time.
The present invention is for solving the technological means that problem adopted of known technology, be in the power system of an electronic equipment, to include a switching device, it includes a plurality of current paths, is supplied to each different loads with the output voltage that power supply unit is supplied via different current paths; One micro controller, the on off state of this switching device of may command; One preset reference value storage element connects this micro controller, has stored the specified total output current value of predefined power supply unit; One priority storage element connects this micro controller, has stored the number of loads in the whole system and priority that each load of working out in advance can temporarily be stopped; When this micro controller detects actual total output current when having surpassed or having surpassed this default specified total output current value nearly, then according to the priority that can temporarily be stopped of load, temporary transient stop supplies electric current is at least one load, and when the total output current of this reality surpasses this default specified total output current value, according to the reverse priority that can temporarily be stopped of load, restart before by the load of temporary transient stop supplies electric current.The priority system that this each load of working out in advance can temporarily be stopped to decide according to the significance level of keeping predetermined operation function in the whole system.
When technology of the present invention was applied in the notebook computer, its micro controller can be the keyboard controller of this notebook computer, utilized this keyboard controller to control and started or stoped partly load (for example battery charge).
Via the technology used in the present invention means, can be so that the power system of an electronic equipment, be under the best power supply situation, and can detect load current when surpassing default nominal load current, can suspend in good time and supply power to partly load, and when load current surpasses default nominal load current, then start the part load of originally temporarily being stopped power supply again in good time.So can effectively avoid being in overload often, reach purpose of safety because of each load continued power causes power supply unit.And control device of the present invention is drawn up the priority that can temporarily be stopped of each load in advance according to keeping the significance level of predetermined operation function in the whole computer system, so during to load partly, also can not have influence on the normal operation of this electronic load system at temporary transient stop supplies electric current.
Description of drawings
Fig. 1 is a system of the present invention connection diagram.
Fig. 2 is the control flow chart of first embodiment of the invention.
Fig. 3 is the control flow chart of second embodiment of the invention.
Embodiment
Consult shown in Figure 1ly, be circuit connection diagram of the present invention, connect in the framework at the circuit of this power system, a power supply unit 1 can be obtained working power by an alternating-current voltage source ACV, supplies a direct current output voltage V by its output again.And this output voltage V is after via controller 2 control, is supplied to each different loads 31,32,33,34 in each load system by each different current path again.Whether the electric current that power supply unit 1 is supplied can be supplied in each load, is to be controlled by controller 2.This load system can be notebook computer, desktop computer or other electronic equipment.
This power supply unit 1 has specified output voltage V max and specified total output current Imax.This power supply unit 1 is supplied to electric current I 1, I2, the I3 of each load, the sum total electric current of I4 promptly equals actual total output current Ireal that this power supply unit 1 is supplied.Therefore, this controller 2 can calculate each load 31,32,33,34 performance numbers that consumed by electric current I 1, I2, I3, the I4 that monitors each load, also can calculate actual total output current Ireal of this power supply unit 1 load that is supplied to.
In order to detect load current I1, I2, I3, the I4 that each load 31,32,33,34 is consumed, one current- sensing circuit 41,42,43,44 can be set, in order to detect the actual loading current value that flows through each load 31,32,33,34 in the circuit paths of each load 31,32,33,34.The actual loading current signal SI1 of these detectings, SI2, SI3, SI4 can be sent in the controller 2, with as the foundation of this controller 2 when carrying out function of the present invention.
Have a micro controller 21 in the controller 2, can calculate, handle, and control the present invention in the function of power management and control.Micro controller 21 may command one switching device 22, it has a plurality of switch elements, is connected to each load via different current paths respectively, whether is supplied to each load 31,32,33,34 with the electric current of controlling this power supply unit 1.
This power supply unit 1 can be present the switched power supplier that generally uses or the power supply device of other pattern.When the present invention was applied in the notebook computer, this controller 2 can be the keyboard controller (Keyboard Controller) in the notebook computer device.In this application examples, the micro controller 21 of this controller 2 is connected in the CPU 5 of this notebook computer device via bus, and the work time pulse of this CPU 5 is supplied by a clock pulse generator 6.The micro controller 21 of this controller 2 can produce a frequency reducing control signal Sc to this CPU 5 via a control line, so that the operating frequency of this CPU 5 is changeable in normal frequency mode of operation or frequency reducing mode of operation.When the normal frequency mode of operation, this CPU 5 can be operated under higher operating rate, and under the frequency reducing mode of operation, this CPU 5 can be operated under lower operating rate, but can consume less electric energy.
This micro controller 21 is connected with a preset reference value storage element 23, can be in order to store the reference value of predefined every necessity, for example specified total output current value Imax of power supply unit, rated output voltage value V, required load current value, the error amount of each loaded work piece ... Deng.Also can store a specified tolerance current value I diff in this preset reference value storage element 23 in advance, it is defined as specified total output current value Imax and the actual tolerance electric current difference of output current Ireal always.
Moreover this micro controller 21 also is connected with a priority storage element 24, the priority list that can temporarily be stopped in order to each load of number of loads in the storage whole system and formulation in advance ... etc. data.For example in the application scenario of a notebook computer, the limit priority person that can temporarily be stopped who being formulated in this priority storage element 24 can be the charge circuit of the battery of this notebook computer.Also the frequency reducing mode of operation of this CPU 5 can be listed in this priority storage element 24 in the job in the priority list, with when needed in good time handover operation in the frequency reducing mode of operation.
Aforesaid load can be made a general reference the entity load (for example battery, fan, disc driver) in the computer system, also can be a certain executive program or function (for example frequency elimination of CPU or recovery) in this computer system.
Determining the factor of the priority that each stored in the aforementioned priority storage element 24 load can temporarily be stopped, is to decide according to keeping the significance level of predetermined operation function in the whole computer system.For example in the middle of the computer system operation, temporary transient stop supplies charging current can't have influence on the normal operation of this computer system, or close the normal operation that some unessential executive program also can not have influence on this computer system to battery.Again for example in the middle of computer system operation, temporarily with CPU 5 handover operations in the frequency reducing mode of operation, except operating rate is slow, also can't have influence on the normal operation of this computer system.
Connect framework based on aforesaid circuit of the present invention, the present invention is when carrying out the flow process of power management and control (consulting shown in Figure 2), at first in step 101, pre-if obtain data such as every benchmark numerical value (for example the number of loads in the specified total output current value Imax of power supply unit, the whole system and each load of working out in advance can temporarily be stopped priority).
Then, in step 102, detect actual total output current Ireal that this power supply unit is supplied, again in step 103, with specified total output current value Imax do one comparison of total output current Ireal of this reality and power supply unit.
Comparative result, if when should the total output current Ireal of reality having surpassed a predetermined specified total output current value Imax (step 104), then micro controller can calculate according to both differences and need to close those loads altogether and the total output current Ireal of reality could be reduced to below a certain default safe current value (step 105).
Can choose one or more load according to this result of calculation, in step 106, again according to the priority that can temporarily be stopped in the load of these selections, temporary transient stop supplies power supply is to the load that should select then.After closing partly load, before control flow is got back to step 102 once again, regularly repeat to monitor actual total output current Ireal that this power supply unit supplies and management and the control of carrying out the power supply supply.
If in priority storage element 24, have the frequency reducing mode of operation of this CPU 5 is listed in the priority list, then can be in this step 106 according to its cis-position in time with the mode of operation handover operation of CPU in the frequency reducing mode of operation.
If in step 104, when judging the total output current value Ireal of this reality and surpassing predetermined specified total output current value Imax, then micro controller can judge in step 107 whether its electric current difference can restart the part load of before temporarily having been stopped power supply.Still be not enough to reach when restarting any load if result of calculation shows, then controller is not carried out any action.
In step 107, if showing, result of calculation has been enough to reach when restarting partly load, then further calculating can be restarted the load which had before temporarily been stopped power supply altogether in step 108, and then in step 109 according to the reverse priority of these loads of choosing, restart supply of current to load that should be selected.
If in priority storage element 24, have the frequency reducing mode of operation of this CPU 5 is listed in the priority list, then in this step 109, can will before may be switched, switch back the mode of operation of normal frequency again to the CPU of frequency reducing mode of operation.
Fig. 3 is the control flow chart of second embodiment of the invention.Its control flow mostly first embodiment control flow with shown in Figure 2 is identical.So identical step is denoted as identical reference numbering.This control flow mainly is at first in step 101, pre-if obtain data such as every benchmark numerical value (for example the number of loads in the specified total output current value Imax of power supply unit, a specified tolerance current value I diff, the whole system and each load of working out in advance can temporarily be stopped priority), wherein this specified tolerance current value I diff is defined as specified total output current value Imax and the actual tolerance electric current difference of output current Ireal always.
Then, in step 102, detect actual total output current Ireal that this power supply unit is supplied, again in step 103, with specified total output current value Imax do one comparison of total output current Ireal of this reality and power supply unit.
Comparative result, if should increase to when differing in this default specified tolerance current value I diff (step 104a) by the total output current Ireal of reality with specified total output current value Imax, then micro controller is promptly according to the difference of the total output current Ireal of this reality and specified total output current value Imax, needs to close which load altogether and the total output current Ireal of reality could be reduced to below a certain default safe current value (step 105) and calculate.Can choose one or more load according to this result of calculation, in step 106, choose the priority that can temporarily be stopped in the load according to these more then, temporary transient stop supplies power supply is to the load that should select.
After closing partly load, before control flow is got back to step 102 once again, regularly repeat to monitor actual total output current Ireal that this power supply unit supplies and management and the control of carrying out the power supply supply.
If in step 104a, judge the total output current Ireal of this reality and do not surpass when differing in this default specified tolerance current value I diff with specified total output current value Imax, then micro controller judges in step 107 promptly whether its electric current difference can restart the part load of before temporarily having been stopped power supply.Still be not enough to reach when restarting any load if result of calculation shows, then controller is not carried out any action.
In step 107, if showing, result of calculation has been enough to reach when restarting partly load, then further calculating can be restarted the load that those had before temporarily been stopped power supply altogether in step 108, and then in step 109 according to the reverse priority of these loads of choosing, restart supply of current to load that should be selected.
Controller of the present invention is the situation of monitoring power supply supply situation and load consumption power constantly, also can promptly stop management and controlled function that power supply being supplied when detecting the instruction that stops Power Supply Monitoring after (step 110).If do not receive the instruction that stops Power Supply Monitoring, before then control flow can repeat to get back to step 102, regularly repeat to monitor actual total output current Ireal that this power supply unit supplies and management and the control of carrying out the power supply supply.

Claims (20)

1. the power management of a power supply unit and control method, in order to management and control the electric current that a power supply unit is supplied to a plurality of loads in the load system, it is characterized in that: this method comprises the following steps:
(a) specified total output current value of default this power supply unit, and work up the priority that each load can temporarily be stopped;
(b) detect actual total output current that this power supply unit is supplied to load;
Specified total output current value of the power supply unit of (c) relatively should the total output current of reality and should be predetermined;
(d) when the total output current of this reality had surpassed this default specified total output current value, according to the priority that can temporarily be stopped of load, temporary transient stop supplies electric current was at least one load;
(e) when the total output current of this reality surpasses this default specified total output current value,, restart before by the load of temporary transient stop supplies electric current according to the reverse priority that can temporarily be stopped of load.
2. the power management of power supply unit as claimed in claim 1 and control method is characterized in that: described method includes the step that detecting is supplied to the electric current of each load.
3. the power management of power supply unit as claimed in claim 1 and control method, it is characterized in that: described load refers to the entity load in the computer system.
4. the power management of power supply unit as claimed in claim 1 and control method, it is characterized in that: described load refers to executive program or the function in the computer system.
5. the power management of power supply unit as claimed in claim 1 and control method, it is characterized in that: also comprise in the described step (d) this load system is switched to a frequency elimination mode of operation by a normal frequency mode of operation, in this step (e), then comprise the step of this load system being switched back the normal frequency mode of operation by the frequency elimination mode of operation.
6. the power management of a power supply unit and control method, in order to management and control the electric current that a power supply unit is supplied to a plurality of loads in the load system, it is characterized in that: this method comprises the following steps:
(a) specified total output current value, a specified tolerance current value of default this power supply unit and work up the priority that each load can temporarily be stopped, wherein the definition of this specified tolerance current value is specified total output current value and the actual tolerance electric current difference of output current always;
(b) detect actual total output current that this power supply unit is supplied to load;
Specified total output current value of the power supply unit of (c) relatively should the total output current of reality and should be predetermined;
(d) increase to when differing in this default specified tolerance current value with specified total output current value when the total output current of this reality, promptly according to the priority that can temporarily be stopped of load, temporary transient stop supplies electric current is at least one load;
(e) do not reach when differing this default specified tolerance current value interior when the total output current of this reality,, restart before by the load of temporary transient stop supplies electric current then according to the reverse priority that can temporarily be stopped of load with specified total output current value.
7. the power management of power supply unit as claimed in claim 6 and control method is characterized in that: described method includes the step that detecting is supplied to the electric current of each load.
8. the power management of power supply unit as claimed in claim 6 and control method, it is characterized in that: described load refers to the entity load in the computer system.
9. the power management of power supply unit as claimed in claim 6 and control method, it is characterized in that: described load refers to executive program or the function in the computer system.
10. as the power management and the control method of claim 6 or 7 described power supply units, it is characterized in that: also comprise in the described step (d) this load system is switched to a frequency elimination mode of operation by a normal frequency mode of operation, in this step (e), then comprise the step of this load system being switched back the normal frequency mode of operation by the frequency elimination mode of operation.
11. the power management of a power supply unit and control device, in order to manage and to control the electric current that a power supply unit is supplied to a plurality of loads in the load system, it is characterized in that: this control device comprises:
One switching device includes a plurality of current paths, is supplied to each different loads with the output voltage that power supply unit is supplied via different current paths;
One micro controller, the on off state of this switching device of may command;
One preset reference value storage element is connected in this micro controller, has stored the specified total output current value of predefined power supply unit;
One priority storage element is connected in this micro controller, has stored the number of loads in the whole system and the job of the priority that each load of working out in advance can temporarily be stopped;
When the total output current of reality has surpassed this default specified total output current value, then micro controller is according to the priority that can temporarily be stopped of load, temporary transient stop supplies electric current is at least one load, and when the total output current of this reality surpasses this default specified total output current value, according to the reverse priority that can temporarily be stopped of load, restart before by the load of temporary transient stop supplies electric current.
12. power management and control device as the power supply unit as described in the claim 11 is characterized in that: in the described priority storage element each load of working out in advance priority system that can temporarily be stopped to decide according to the significance level of keeping predetermined operation function in the whole system.
13. the power management of power supply unit as claimed in claim 11 and control device is characterized in that: described micro controller is the keyboard controller of a computer.
14. the power management of power supply unit as claimed in claim 11 and control device is characterized in that: described switching device is connected in each current path of load, also includes a current-sensing circuit, is supplied to the current value of each load in order to detecting.
15. the power management of power supply unit as claimed in claim 11 and control device is characterized in that: described priority storage element stored priority list in job include the operating frequency of switching this load system.
16. the power management of a power supply unit and control device, in order to manage and to control the electric current that a power supply unit is supplied to a plurality of loads in the load system, it is characterized in that: this control device comprises:
One switching device includes a plurality of current paths, is supplied to each different loads with the output voltage that power supply unit is supplied via different current paths;
One micro controller, the on off state of this switching device of may command;
One preset reference value storage element, be connected in this micro controller, stored a specified total output current value of predefined power supply unit and a specified tolerance current value, wherein the definition of this specified tolerance current value is specified total output current value and the actual tolerance electric current difference of output current always;
One priority storage element is connected in this micro controller, has stored the job of the priority that each load of number of loads in the whole system and formulation in advance can temporarily be stopped;
When detecting actual total output current, this micro controller increases to when differing in this default specified tolerance current value with specified total output current value, this micro controller is promptly according to the priority that can temporarily be stopped of load, temporary transient stop supplies electric current is at least one load, and do not reach when differing within this default specified tolerance current value with specified total output current value when the total output current of this reality, then, restart before by the load of temporary transient stop supplies electric current according to the reverse priority that can temporarily be stopped of load.
17. the power management of power supply unit as claimed in claim 16 and control device is characterized in that: in the described priority storage element each load of working out in advance priority system that can temporarily be stopped to decide according to the significance level of keeping predetermined operation function in the whole system.
18. the power management of power supply unit as claimed in claim 16 and control device is characterized in that: described micro controller is the keyboard controller of a computer.
19. the power management of power supply unit as claimed in claim 16 and control device is characterized in that: described switching device is connected in each current path of load, also includes a current-sensing circuit, is supplied to the current value of each load in order to detecting.
20. the power management of power supply unit as claimed in claim 16 and control device is characterized in that: the job in the stored priority list of described priority storage element includes the operating frequency of switching this load system.
CN 200410015069 2004-01-09 2004-01-09 Power soure management and control method and device for power source supply device Pending CN1641963A (en)

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Application Number Priority Date Filing Date Title
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Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN100492224C (en) * 2005-06-14 2009-05-27 上海理工大学 Power supply management method for electronic apparatus
CN101495936B (en) * 2006-07-31 2011-08-10 摩托罗拉解决方案公司 System for managing the power source life between multiple individually powered devices in a wired system and method of using same
CN102263645A (en) * 2011-07-04 2011-11-30 迈普通信技术股份有限公司 Power management method and power management system for communication equipment
CN102857719A (en) * 2012-09-12 2013-01-02 四川迪佳通电子有限公司 Power supply control system and power supply control method
CN103176587A (en) * 2011-12-23 2013-06-26 金宝电子工业股份有限公司 Solar power management module, method and electronic computer
CN104219397A (en) * 2014-09-03 2014-12-17 深圳市中兴移动通信有限公司 Mobile terminal and power saving method and system thereof
CN105337287A (en) * 2015-11-16 2016-02-17 上海电机学院 Electrical load part unloading method and electrical load part unloading system
WO2018006593A1 (en) * 2016-07-06 2018-01-11 中兴通讯股份有限公司 Wifi power supply switching method, circuit and apparatus, and storage medium
CN108448680A (en) * 2017-05-01 2018-08-24 圆展科技股份有限公司 Charging method and charging system
CN110196626A (en) * 2018-02-23 2019-09-03 飞捷科技股份有限公司 Integrated computer system and the power consumption control method being applied thereon

Cited By (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN100492224C (en) * 2005-06-14 2009-05-27 上海理工大学 Power supply management method for electronic apparatus
CN101495936B (en) * 2006-07-31 2011-08-10 摩托罗拉解决方案公司 System for managing the power source life between multiple individually powered devices in a wired system and method of using same
CN102263645B (en) * 2011-07-04 2014-06-18 迈普通信技术股份有限公司 Power management method and power management system for communication equipment
CN102263645A (en) * 2011-07-04 2011-11-30 迈普通信技术股份有限公司 Power management method and power management system for communication equipment
CN103176587A (en) * 2011-12-23 2013-06-26 金宝电子工业股份有限公司 Solar power management module, method and electronic computer
CN102857719B (en) * 2012-09-12 2016-08-24 四川迪佳通电子有限公司 A kind of electric power supply control system and method
CN102857719A (en) * 2012-09-12 2013-01-02 四川迪佳通电子有限公司 Power supply control system and power supply control method
CN104219397A (en) * 2014-09-03 2014-12-17 深圳市中兴移动通信有限公司 Mobile terminal and power saving method and system thereof
CN105337287A (en) * 2015-11-16 2016-02-17 上海电机学院 Electrical load part unloading method and electrical load part unloading system
WO2018006593A1 (en) * 2016-07-06 2018-01-11 中兴通讯股份有限公司 Wifi power supply switching method, circuit and apparatus, and storage medium
CN107592205A (en) * 2016-07-06 2018-01-16 中兴通讯股份有限公司 WIFI power switching method, circuit and device
US20190313339A1 (en) * 2016-07-06 2019-10-10 Zte Corporation Wifi power supply switching method, circuit and apparatus, and storage medium
CN108448680A (en) * 2017-05-01 2018-08-24 圆展科技股份有限公司 Charging method and charging system
CN108448680B (en) * 2017-05-01 2021-01-22 圆展科技股份有限公司 Charging method and charging system
US10910849B2 (en) 2017-05-01 2021-02-02 Aver Information Inc. Charging method and charging system
CN110196626A (en) * 2018-02-23 2019-09-03 飞捷科技股份有限公司 Integrated computer system and the power consumption control method being applied thereon
CN110196626B (en) * 2018-02-23 2023-06-02 飞捷科技股份有限公司 Integrated computer system and power consumption control method applied to same

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