CN103178726A - Power adapter and power adapting method - Google Patents
Power adapter and power adapting method Download PDFInfo
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- CN103178726A CN103178726A CN2011104335053A CN201110433505A CN103178726A CN 103178726 A CN103178726 A CN 103178726A CN 2011104335053 A CN2011104335053 A CN 2011104335053A CN 201110433505 A CN201110433505 A CN 201110433505A CN 103178726 A CN103178726 A CN 103178726A
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Abstract
The invention provides a power adapter which is coupled between a socket and an electronic device. The power adapter has certain power and comprises a secondary circuit and a power source control unit. The secondary circuit is used for transmitting the power source to the electronic device. The power source control unit is used for transmitting a detection signal to the electronic device according to the power source and enabling the electronic device to manage the power source according to the detection signals. The power source adapter can automatically generate detection signals to the electronic device, can protect the circuit in a soft starting mode, and enables the electronic device to perform power source management according to the detection signals.
Description
Technical field
The present invention relates to a kind of power supply adaptor, particularly a kind of power supply adaptor with protection mechanism.
Background technology
Portable electron device now is usually by rechargeable battery powered or directly power by socket.The example of these portable electron devices comprises mobile phone, portable electronic device, personal digital assistant (PDA) etc.Generally speaking, the power supply supply adapter has be used to an attaching plug that is coupled to AC socket, and AC power is converted to certain DC power supply to electronic installation powers.In order to promote recharging of rechargeable battery, portable electron device is sold together with power supply supply adapter (Adapter) usually, and different portable electron devices has the power supply supply adapter of different capacity.If user's mistake will not mated when the power supply supply of (being different capacity) is adaptive is coupled to electronic installation, may cause the damage of electronic installation or power supply supply adapter, even jeopardize user's safety.
Be illustrated in figure 1 as the frame diagram of existing electronic system 100.Electronic system 100 comprises a power supply adaptor 110 and an electronic installation 120.Power supply adaptor 110 comprises a primary circuit 112, a transformer 114 and a secondary circuit 116.Primary circuit 112 is used for receiving the AC power AC from the socket (not shown), and is sent to transformer 114 after AC power AC is changed into DC power supply DC.Transformer 114 is that a direct current source of voltage transformation DC ' is sent to secondary circuit 116 with DC power supply DC transformation.Direct current source of voltage transformation DC ' after with rectification is sent to electronic installation 120 to secondary circuit 116 by one first pin V+ and one second pin V-after with direct current source of voltage transformation DC ' rectification.
Electronic installation 120 comprises a current sensor 122, voltage level shift unit 124 and an embedded controller 126.Current sensor 122 is used for detecting the direct current source of voltage transformation DC ' after the rectification that is received by power supply adaptor 110, and produces a voltage signal and be sent to voltage level shift unit 124.Be sent to embedded controller 126 after the voltage signal step-down of voltage level shift unit 124 with current sensor 122 generations.Embedded controller 126 judges user whether misconnection and the unmatched power supply adaptor of electronic installation 120 according to the voltage signal after step-down.
According to electronic system 100, prior art only can prevent user's misconnection to unmatched power supply adaptor, and can't promote convenience and flexibility ratio in user's use.In addition, the defencive function of electronic system 100 only can rely on electronic installation 120, may cause danger and damage if power supply adaptor 110 is connected to the electronic installation with defencive function.Therefore, need the more complete electronic system of a kind of function.
Summary of the invention
The invention provides a kind of power supply adaptor, be coupled between a socket and an electronic installation, and have a set power, power supply adaptor comprises a secondary circuit and a power control unit.Secondary circuit is used for a power supply is sent to electronic installation.Power control unit transmits a detection signal to electronic installation according to power supply, and makes electronic installation carry out power management according to detection signal.
The present invention separately provides a kind of power adaptation method, is applicable to a power supply adaptor, and its method comprises: by the one first and second pin, a power supply of power supply adaptor is sent to an electronic installation; According to power generation one detection signal; And by one the 3rd pin, transmit detection signal to electronic installation, make electronic installation carry out power management according to detection signal.
Power supply adaptor of the present invention can produce detection signal voluntarily to electronic installation, and with the mode protective circuit of soft start, and cause electronic installation to carry out power management according to detection signal.
Description of drawings
Fig. 1 is the frame diagram of existing a kind of electronic system;
Fig. 2 is the frame diagram of electronic system provided by the present invention;
Fig. 3 is the frame diagram of testing circuit provided by the present invention;
Fig. 4 is the flow chart of a kind of power adaptation method provided by the present invention.
Wherein:
100,200-electronic system; 110,210-power supply adaptor; 120,220-electronic installation;
112,212-primary circuit; 114,214-transformer; 116,216-secondary circuit;
The 122-current sensor; 124-voltage level shift unit; 126, the embedded controller of 224-;
The 215-testing circuit; The 218-power control unit; The 222-transducer;
The 226-battery charger; The 228-battery; 230-potency management device;
The 302-output switch; The 304-current sensor; The 306-encoder;
The 308-soft start controller; The 310-overload detection; The AC-AC power;
The DC-DC power supply; DC '-direct current source of voltage transformation; V+, V-, SP-pin;
The S1-detection signal; The S2-current signal; The V1-voltage signal;
EN-power code signal; The AL-warning signal.
Embodiment
Below will discuss device and the using method of various embodiments of the invention in detail.Yet it should be noted that many feasible inventive concepts provided by the present invention may be implemented in various particular ranges.These specific embodiments only are used for illustrating device of the present invention and using method, but non-be used to limiting scope of the present invention.
Fig. 2 is the frame diagram of electronic system provided by the present invention.Electronic system 200 comprises a power supply adaptor 210 and an electronic installation 220.Power supply adaptor 210 is coupled between a socket (not icon) and electronic installation 220, and has a set power.Power supply adaptor 210 comprises a primary circuit 212, a transformer 214 and a testing circuit 215.Testing circuit 215 comprises a secondary circuit 216 and a power control unit 218.For example, above-mentioned socket can be any socket that is used to provide voltage, and the present invention is not limited.Primary circuit 112 is used for receiving the AC power AC from socket (not icon), and is sent to transformer 214 after AC power AC is changed into DC power supply DC.Transformer 214 is that a direct current source of voltage transformation DC ' is sent to secondary circuit 216 with DC power supply DC transformation.Direct current source of voltage transformation DC ' after with rectification is sent to electronic installation 120 to secondary circuit 216 by one first pin V+ and one second pin V-after with direct current source of voltage transformation DC ' rectification.Power control unit 218 is according to the direct current source of voltage transformation DC ' after rectification, transmit a detection signal S1 to electronic installation 220 by one the 3rd pin SP, and cause electronic installation 220 to carry out power management according to detection signal S1, wherein detection signal S1 is a current signal.It should be noted that detection signal S1 can be a power code signal EN and/or a warning signal AL, above-mentioned two signals will be specified in the explanation of Fig. 3, please refer to following explanation.
Fig. 3 is the frame diagram of testing circuit provided by the present invention.As mentioned above, testing circuit 215 comprises secondary circuit 216 and power control unit 218, and secondary circuit 216 comprises an output switch 302 and a current sensor 304.The direct current source of voltage transformation DC ' that output switch 302 is used for controlling after rectification is sent to electronic installation 220.Current sensor 304 produces a current signal S2 according to the direct current source of voltage transformation DC ' after rectification, and provides to power control unit 218.
Fig. 4 is the flow chart of a kind of power adaptation method provided by the present invention.Flow process starts from step S400.
In step S400, power supply adaptor 210 is sent to electronic installation 220 by one first pin V+ and the second pin V-with the direct current source of voltage transformation DC ' after a rectification.
Then, in step S402, power control unit 218 produces detection signal S1 according to the direct current source of voltage transformation DC ' after rectification.
Then, in step S404, power supply adaptor 210 transmits detection signal S1 to electronic installation 220 by one the 3rd pin SP.For example, detection signal S1 can be a power code signal EN and/or a warning signal AL.Power supply adaptor 210 produces a current signal S2 according to the direct current source of voltage transformation DC ' after rectification, in addition, overload detection 310 can produce a warning signal AL as detection signal S1 according to the temperature of the direct current source of voltage transformation DC ' after rectification or power supply adaptor 210, and soft start controller 308 according to power code signal EN and/or warning signal AL passback adjust signal S3 to secondary circuit 216, cause after the rectification that is sent to electronic installation 220 direct current source of voltage transformation DC ' gradually increase or be reduced to the set power of power supply adaptor 210.
Then, in step S406, detection signal S1 causes electronic installation 220 to carry out power management according to detection signal S1.For example, when the set power of the embedded controller 224 judgement power supply adaptors 210 of electronic installation 220 during less than the required power of electronic installation 220, embedded controller 224 causes battery charger 226 stop battery charging and/or cause potency management device 230 to reduce the operating frequency of electronic installations 220, the power that is consumed to reduce electronic installation 220.Flow process ends at step S406.
In sum, power supply adaptor 210 of the present invention can produce detection signal S1 voluntarily to electronic installation 220, and with the mode protective circuit of soft start, and cause electronic installation 220 to carry out power management according to detection signal.
Method of the present invention, or specific kenel or its part can exist with the kenel of program code.Program code can be stored in entity medium, get (as embodied on computer readable) storage medium as floppy disk, CD, hard disk or any other machine readable, or be not limited to the computer program of external form, wherein, when program code by machine, when loading and carrying out as computer, this machine becomes to participate in device of the present invention.Program code also can pass through some transmission mediums, transmits as electric wire or cable, optical fiber or any transmission kenel, and wherein, by machine, when receiving, loading and carrying out as computer, this machine becomes to participate in device of the present invention when program code.When at the general service processing unit, program code provides a class of operation to be similar to the unique apparatus of using particular logic circuit in conjunction with processing unit.
Above-mentioned explanation, it is only preferred embodiment of the present invention, when not limiting scope of the invention process with this, the simple equivalence of namely in every case doing according to claims of the present invention and description changes and modifies, and all still remains within the scope of the patent.Arbitrary embodiment of the present invention or claim are not necessarily reached the disclosed whole purposes of the present invention or advantage or characteristics in addition.In addition, summary part and title are only auxiliary patent document searches, are not to limit the scope of the present invention.
Claims (10)
1. a power supply adaptor, be coupled between a socket and an electronic installation, and have a set power, and above-mentioned power supply adaptor comprises:
One secondary circuit is used for a power supply is sent to above-mentioned electronic installation; And
One power control unit is used for transmitting a detection signal to above-mentioned electronic installation according to above-mentioned power supply, and causes above-mentioned electronic installation to carry out power management according to above-mentioned detection signal.
2. power supply adaptor as claimed in claim 1, is characterized in that, above-mentioned secondary circuit also comprises a current sensor, is used for according to above-mentioned power generation one current signal, and provides to above-mentioned power control unit.
3. power supply adaptor as claimed in claim 2, it is characterized in that, above-mentioned power control unit also comprises an encoder, is used for above-mentioned current signal is encoded to a power code signal as above-mentioned detection signal, and wherein above-mentioned power code signal is corresponding to above-mentioned set power.
4. power supply adaptor as claimed in claim 3, it is characterized in that, above-mentioned power control unit also comprises a soft start controller, is used for according to above-mentioned power code signal, cause be sent to above-mentioned electronic installation above-mentioned power supply gradually increase or be reduced to above-mentioned set power.
5. power supply adaptor as claimed in claim 1, is characterized in that, above-mentioned power control unit also comprises an overload detection, is used for producing a warning signal as above-mentioned detection signal according to the temperature of above-mentioned power supply or above-mentioned power supply adaptor.
6. a power adaptation method, be applicable to a power supply adaptor, and its method comprises:
By the one first and second pin, a power supply of above-mentioned power supply adaptor is sent to an electronic installation;
According to above-mentioned power generation one detection signal; And
By one the 3rd pin, transmit above-mentioned detection signal to above-mentioned electronic installation, make above-mentioned electronic installation carry out power management according to above-mentioned detection signal.
7. power adaptation method as claimed in claim 6, is characterized in that, the step that produces above-mentioned detection signal comprises:
According to above-mentioned power generation one current signal; And
Also comprise above-mentioned current signal is encoded to a power code signal as above-mentioned detection signal.
8. power adaptation method as claimed in claim 7, is characterized in that, above-mentioned power code signal is corresponding to a set power of above-mentioned power supply adaptor.
9. power adaptation method as claimed in claim 8, is characterized in that, above-mentioned power code signal be used for causing be sent to above-mentioned electronic installation above-mentioned power supply gradually increase or be reduced to above-mentioned set power.
10. power adaptation method as claimed in claim 6, is characterized in that, the step that produces above-mentioned detection signal comprises that the temperature according to above-mentioned power supply or above-mentioned power supply adaptor produces a warning signal, as above-mentioned detection signal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110433505.3A CN103178726B (en) | 2011-12-21 | 2011-12-21 | Power adapter and power adapting method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110433505.3A CN103178726B (en) | 2011-12-21 | 2011-12-21 | Power adapter and power adapting method |
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| CN103178726A true CN103178726A (en) | 2013-06-26 |
| CN103178726B CN103178726B (en) | 2015-05-20 |
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| CN201110433505.3A Active CN103178726B (en) | 2011-12-21 | 2011-12-21 | Power adapter and power adapting method |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104778090A (en) * | 2014-01-09 | 2015-07-15 | 联想(北京)有限公司 | Control method and electronic equipment |
| CN106933123A (en) * | 2015-12-31 | 2017-07-07 | 中强光电股份有限公司 | Projection arrangement, electric power controller and its method for managing power supply |
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| CN1901315A (en) * | 2006-07-25 | 2007-01-24 | 宏碁股份有限公司 | Circuit and method for regulating portable device work efficiency according to power converter specification |
| US20070053125A1 (en) * | 2005-09-02 | 2007-03-08 | Topower Computer Industrial Co., Ltd. | Power supply equipped with an independent overload protection mechanism |
| US20070300089A1 (en) * | 2006-06-21 | 2007-12-27 | Bhogal Kulvir S | Enhancements To Improve The Functionality And Efficiency Of Brick Power Adapters |
| CN101286646A (en) * | 2007-04-13 | 2008-10-15 | 宏碁股份有限公司 | Charging equipment of portable device |
| CN101727161A (en) * | 2008-10-16 | 2010-06-09 | 宏碁股份有限公司 | Electronic device, power supply detection system and method |
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2011
- 2011-12-21 CN CN201110433505.3A patent/CN103178726B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20070053125A1 (en) * | 2005-09-02 | 2007-03-08 | Topower Computer Industrial Co., Ltd. | Power supply equipped with an independent overload protection mechanism |
| US20070300089A1 (en) * | 2006-06-21 | 2007-12-27 | Bhogal Kulvir S | Enhancements To Improve The Functionality And Efficiency Of Brick Power Adapters |
| CN1901315A (en) * | 2006-07-25 | 2007-01-24 | 宏碁股份有限公司 | Circuit and method for regulating portable device work efficiency according to power converter specification |
| CN101286646A (en) * | 2007-04-13 | 2008-10-15 | 宏碁股份有限公司 | Charging equipment of portable device |
| CN101727161A (en) * | 2008-10-16 | 2010-06-09 | 宏碁股份有限公司 | Electronic device, power supply detection system and method |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104778090A (en) * | 2014-01-09 | 2015-07-15 | 联想(北京)有限公司 | Control method and electronic equipment |
| CN104778090B (en) * | 2014-01-09 | 2019-01-15 | 联想(北京)有限公司 | A kind of control method and electronic equipment |
| CN106933123A (en) * | 2015-12-31 | 2017-07-07 | 中强光电股份有限公司 | Projection arrangement, electric power controller and its method for managing power supply |
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|---|---|
| CN103178726B (en) | 2015-05-20 |
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