CN103595389A - System and method for controlling connection between power supply and inductive power outlet - Google Patents
System and method for controlling connection between power supply and inductive power outlet Download PDFInfo
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- CN103595389A CN103595389A CN201210287330.4A CN201210287330A CN103595389A CN 103595389 A CN103595389 A CN 103595389A CN 201210287330 A CN201210287330 A CN 201210287330A CN 103595389 A CN103595389 A CN 103595389A
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Abstract
Provided is a switching system for controlling the connection between a power supply and an inductive power socket. The system comprises at least one primary inductor which is inductively coupled to a secondary inductor associated with an inductive power receiver. The switching system comprises a breaker for disconnecting the inductive power socket and the power supply and a trigger switch for forbidding the breaker when the inductive power receiver is close to the inductive power socket.
Description
Technical field
The present invention relates to energy-conservation electric energy transmission system.More specifically, the present invention relates to for controlling the method to the system of induction electric energy outlet power supply.
Background technology
Effective use of the available energy is all very important for a plurality of reasons.All more pay close attention in the world the discharge of greenhouse gas, for example, from the fossil-fuel-fired carbon dioxide obtaining, can cause global warming.In addition, the energy is limited.The global energy shortage coexisting with geopolitics factor has driven the rising of energy cost.Effectively using of the energy is that prior budget is considered for energy resource consumption person thus.
The energy loss of delivery of electrical energy is mainly because the easy generation of electric wire of loaded current is overheated.In many cases, this is inevitably, because the electric wire of loaded current is for to electronic equipment, power supply is absolutely necessary, and the electric wire of loaded current has resistance.The work that overcomes this resistance generation produces heat in electric wire.
In other cases, energy loss is unnecessary.For example, electronic equipment is unnecessarily operation conventionally, and the energy of powering for the equipment to not being used is by real waste.Proposed for the various proposals that reduce the amount of energy of free device waste.For example, the joint project of energy Xing Shi Environmental Protection Agency USA and USDOE, it is authorized manufacturer's right and on the product of certain energy consumption standard, shows discernible label meeting.Energy star is attempted to reduce energy consumption by better energy management.
Effectively energy management has reduced energy dissipation.For example, notebook electric energy, it depends on the limited amount energy that the battery that carries provides, and with various measurements, keeps energy consumption minimum.Thus, after no longer working a period of time, computer automatically cuts off screen and hard disk drive, similarly, and when computer is forbidden network interface card when total transmit power line or network disconnect.The battery powered time span that such energy management strategy can be carried by it for increasing equipment.
Yet even when being connected to electric main, effective use of energy is also important.Many general electronic equipments move in low voltage DC, and conventionally use the transducer with AC-DC power supply adaptor, control the electric energy that it is provided.Energy star estimates that the Jin U.S. has been used 1,500,000,000 such power supply adaptors, for equipment for example MP3 player, PDA(Personal Digital Assistant), video camera, digital camera, emergency light, wireless and mobile phone.According to energy star, so about 3,000 hundred million kilowatt hour energy of the annual extraction of power supply adaptor, this is approximate is 11% of the whole national electricity charge of the U.S..
Inductive electric energy transmission system is to replace the convenient power supply supply that ordinary plug is connected with socket electric energy.Induction electric energy transmission allows not use connecting line that electric energy is sent to induction electric energy receiver from induction electric energy outlet.
Applying oscillatory potential or driving voltage in the relevant secondary inductance of induction electric energy outlet.This has produced at primary inductance the magnetic field changing around.When inducing receiver is close to induction during socket, generate secondary electrical potential difference or output voltage being arranged in the magnetic field secondary inductance of this variation.Output voltage can be for electronic equipment charging or the power supply to secondary inductance line.
For the induction electric energy transmission of Energy Efficient, utilize the system of this technology must be in operating process minimum energy losses amount.PCT patent application publication number WO 2008/137996, " the System and Method for Inductive Charging of Portable Devices " by name of Partovi described induced voltage surface, and it has the conductive contact dish of plane in flexible material film.If the receiver coil with magnet on it approaches this dish, this joint connects the port of transmission coil, makes electric current can flow to appropriate coil.The flexible coil joint of the system of Partovi is favourable, and it,, for monitoring appropriate coil, does not increase the energy efficiency of system.In fact, WO 2008/137996 itself has pointed out (the 00283rd section), and design system is to allow individual equipment power supply, and if when two equipment are placed on mat, these two equipment may not reach specific electric energy.
The name of Hui is called the U.S. Patent No. 7 of " Inductive battery charger system with primary transformer windings formed in a multiplayer structure ", another inductive electric energy transmission system has been described in 164,255.Hui has described another induction electric energy converting system, and mechanical switch is wherein provided.When secondary charging module closing switch, the armature winding in switch-actuated high-frequency AC voltage source.Yet, the system of Hui moving-member, and need the accurate calibration between secondary charging module and mechanical switch, and lost thus many advantages of induction electric energy entire system.
Thus, the induction electric energy converting system that needs a kind of Energy Efficient.The embodiments described herein has solved this needs.
Summary of the invention
System described herein relates to switching system, for controlling the connection between power supply and induction electric energy outlet.Induction electric energy outlet comprises at least one primary inductance, be configured to inductively be coupled to the secondary inductance being associated with induction electric energy receiver, wherein said switching system comprises: circuit breaker, be configured to induction electric energy outlet and power supply to disconnect, and trigger switch, be configured to forbid circuit breaker when induction electric energy receiver exports close to induction electric energy.
Alternatively, trigger switch comprises magnetic switch, for detection of the magnetic element being associated with induction electric energy receiver.Magnetic switch can comprise at least one reed switch.Alternatively or extraly, magnetic switch comprises at least one hall-effect switch.
In other system, trigger switch comprises the detector for detection of pumping signal.Alternatively, detector is configured to detect at least one group being comprised of mechanical signal, audio signal, ultrasonic signal and microwave.
According to some systems, trigger switch is configured to detect the pumping signal by described induction electric energy receiver transmitting.Alternatively, detector comprises the fluorescence detector for detection of optical signalling.
When appropriate, switching system also comprises for the power supply to described trigger switch power supply.Such power supply is the group of selecting free electrochemical cell, capacitor, piezoelectric crystal, solar cell, thermoelectric generator, electromagnetic generator and radio-frequency electromagnetic radiation collector to form.Alternatively, induction electric energy outlet comprises at least one piezoelectric crystal, is configured to produce electromotive force when being compressed by induction electric energy receiver.
Extraly, switching system also comprises Verification System, is configured to, when described circuit breaker is prohibited, confirm the existence of described induction electric energy receiver.Conventionally, circuit breaker is configured at all after dates of a period of time, described induction electric energy outlet be disconnected with power supply, unless Verification System confirms to exist described induction electric energy receiver.
Alternatively, trigger switch comprises photovoltaic cell.Conventionally but whether exclusively, photovoltaic cell can be configured to provide electromotive force and when described electromotive force is during lower than threshold value, forbid described circuit breaker.
In various systems, induction electric energy outlet comprises driver element, and be configured to provides oscillating voltage on described primary inductance.In a further embodiment, induction electric energy outlet comprises the communication line from described trigger switch to described circuit breaker.
In addition, instructed a kind ofly for controlling the method for the connection between the outlet of power supply and induction electric energy, said method comprising the steps of: step (a)-provide circuit breaker between described power supply and the outlet of described electric energy; Step (b)-be provided for the forbidding trigger switch of described circuit breaker; Step (c)-described trigger switch detects pumping signal; Step (d)-described trigger switch is sent to described circuit breaker by inhibit signal; And step (e)-described breaking device is connected to described induction electric energy outlet by described power supply.Alternatively, the method can comprise extra step: the regard for oneself authentication signal of induction electric energy receiver of step (f)-wait; And step (g) if-do not receive authentication signal, described circuit breaker disconnects described power supply from described induction electric energy outlet.Other embodiment of method comprise extra step: step (h)-described induction electric energy outlet receives charging end signal from induction electric energy receiver; And step (i)-described circuit breaker disconnects the outlet of described power supply and described induction electric energy.
Accompanying drawing explanation
In order to understand better the present invention and the present invention to be shown, how to realize, below by the mode of pure example with reference to accompanying drawing.
Specifically with reference to accompanying drawing, it shows details for the object of schematically discussing by way of example and only, and the description that gives particulars and be considered to the most useful and the most easily understand principle and the conceptual aspect of embodiment for providing now.In this respect, not required than basic comprehension content more specifically illustrates the CONSTRUCTED SPECIFICATION of embodiment.Specification and accompanying drawing make obviously how to put into practice the invention of several form for those of ordinary skills.In the accompanying drawings:
Fig. 1 a-b is the induction electric energy reflector that uses in inductive electric energy transmission system and the schematic illustration of induction electric energy receiver;
Fig. 2 a means the block diagram of the main element in the first switching system, for connecting the induction electric energy reflector of power supply and induction electric energy converting system;
Fig. 2 b means the block diagram of the main element in another switching system, the pumping signal that wherein configuration flip-flops mechanism is sent by inducing receiver with monitoring;
Fig. 3 a-h is the block diagram schematically showing for the various trigger mechanism of switching system;
Fig. 3 i is the circuit diagram of electronic component of trigger mechanism that the sound stimulation of example is shown;
Fig. 4 a is the block diagram that the main element of the Verification System of using together with switching system is shown;
Fig. 4 b-f is schematically showing of the various Verification Systems used together with switching system; And
Fig. 5 illustrates for controlling power supply and using the flow chart of the method step of the connection between the induction electric energy reflector of embodiment of switching system.
Embodiment
With reference now to Fig. 1 a and 1b,, show the embodiment of induction electric energy transfer system 100.Transfer system 100 comprises induction electric energy outlet 200 and induction electric energy receiver 300.Induction electric energy outlet 200 is configured to electric energy to send to the induction electric energy receiver 300 that wirelessly uses electromagnetic induction.
The induction electric energy outlet 200 of embodiment comprises four primary inductance 220a-d that are integrated in platform 202.Induction electric energy receiver 300 comprises the secondary inductance 320 being integrated in shell 302, and shell 320 is for holding mobile phone 342.When mobile phone 342 is placed in shell 302, electric energy connector 304 is electrically connected to mobile phone 342 by secondary inductance 320.As shown in Figure 1a, induction electric energy receiver 300 can not line up and prevent on platform 202 with a primary inductance 220b, makes secondary inductance 320 inductively be coupled to primary inductance 220b.
Known in optional embodiment, induction electric energy receiver 300 can be additionally arranged as is for example incorporated to power pack, for battery being charged or being directly wired to electronic load 340(Fig. 2 a, 3a-h), for such load is directly powered.In the other embodiment of induction electric energy receiver 300, provide special-purpose induction power supply adapter for being connected to electronic equipment by feed cable, this feed cable can be hard wired to adapter or can connect by conductive plug socket connector.
Induction electric energy outlet 200 is connected to power supply 240(Fig. 2 a, 3a-h), it can extract electric energy from power supply.Conventionally between power supply and induction electric energy outlet 200, introduce AC-DC power supply adaptor, thereby control the electric energy that it is provided.Even when induction electric energy outlet is when being idle, such power supply adaptor can keep being connected with power supply with transducer, this may cause significant waste of energy.
Term used herein " power supply " refers to the power supply that electric energy is therefrom extracted in induction electric energy outlet.The example of power supply comprises: electric main, generator, power pack, on-vehicle battery, power network, solar cell etc.
Term used herein " power supply adaptor " refers to and is connected to power supply the input voltage source from power supply is converted to the equipment of the output voltage of expectation form.The example of power supply adaptor comprises: transformer, AC-AC converter, AC-DC converter, DC-AC converter, rectification circuit etc. and its combination conventionally.
Conventionally, induction electric energy outlet is connected from electric main and is extracted electric energy by plugs and sockets, although also can use other power supplys, and such as on-vehicle battery, power pack, generator etc.
Switching system disclosed herein is connected to reduce by what disconnect induction electric energy outlet or transformer and power supply the waste of energy that induction electric energy exports or transformer is unnecessary, for example when induction electric energy outlet is idle, disconnect electric main, for example, when inducing receiver is not coupled to induction electric energy outlet or when electronic equipment charges completely.
Thus, the special characteristic of switching system described here is to provide circuit breaker 420 for controlling the connection between induction electric energy outlet 200 and power supply.Should be noted that, when appropriate, can between power supply and power supply adaptor, introduce circuit breaker 420, for preventing that the thermal losses induction electric energy outlet simultaneously of transformer or AC-DC transducer from being dormancy.Alternatively or additionally, can between power supply adaptor and induction electric energy outlet, introduce circuit breaker 420, or circuit breaker 420 is integrated in power supply adaptor itself when appropriate.
Thus, when not there is not induction electric energy receiver 300, circuit breaker 420 can disconnect, and in induction electric energy receiver 300 and primary inductance 220a-d one is when contiguous, forbids circuit breaker 420, allows thus electric current to flow to electric energy from power supply 240 and exports 200.When but induction electric energy receiver 300 aligns not from induction outlet 200 extraction electric energy with primary inductance 220a-d, circuit breaker 420 can be further configured to induction electric energy outlet 200 is disconnected from power supply.
For example, idle induction electric energy outlet 200 can remain on its dormancy configuration, until induction electric energy receiver 300 is placed on it, triggers thus pumping signal.Following mask body is described ground, and the switching system 400 and 1400 in Fig. 2 a and 2b can be provided respectively, makes, when induction electric energy receiver 300 and electric energy export primary inductance 220b in 200 and align, to forbid circuit breaker 420.Once be prohibited, circuit breaker 420 provides induction path, makes electric current can export from power supply 240 to induction electric energy 200 and extracts.Can by electromagnetic induction, from primary inductance 220b, extract the electric energy phone 342 etc. that charges via secondary inductance 320.When the electrochemical cell of phone 342 is charged completely, charging end signal is sent to induction outlet 200.When receiving charging end signal, switching system 400 can encourage circuit breaker 420, thus power supply is disconnected from induction power supply outlet 200, and induction electric energy outlet is back to dormancy configuration.
Alternatively, circuit breaker 420 can be further configured to and periodically power supply 240 is connected to induction electric energy outlet 200, thereby the charging of monitoring phone 342 is whole and fill it up with when needed electricity.Alternatively, induction electric energy outlet 200 can remain on its resting state, until triggered another pumping signal.
In order to understand better the embodiment of switching system 400, with reference now to the block diagram of Fig. 2 a.Block representation exports the main element of the connection between 200 in the first embodiment of switching system 400 for controlling the induction electric energy of power supply 240 and induction electric energy transfer system 100, power supply 240 is such as being on-vehicle battery etc.
Induction electric energy transfer system 100 comprises induction electric energy outlet 200 and induction electric energy receiver 300.Induction electric energy outlet 200 comprises primary induction coil 200, by driver 230 with can be connected to power supply 240 by transformer (not shown) alternatively.Driver 230 is provided for oscillating voltage to be supplied to the needed electronic equipment of induction coil 220.Induction electric energy receiver 300 generally includes secondary induction coil 320, rectifier 330 and electronic load 340.Secondary induction coil 320 is configured to inductively be coupled to the primary induction coil 220 of induction electric energy outlet 200.When needed, can provide rectifier 330 so that the alternating current of induction on secondary coil 320 is converted to direct current signal to offer electronic load 340.Rectifier 330 can be necessary, and for example wherein electronic load 340 comprises the electrochemical cell that will be recharged.
Provide switching system 400 to control the connection between voltage 240 and induction electric energy outlet 200.Switching system 400 comprises circuit breaker 420 and trigger mechanism 440.Alternatively, switching system 400 may further include accessory power supply 460, for providing electric energy when induction electric energy outlet 200 when its power supplys 240 disconnect.
With reference now to Fig. 2 b,, block diagram shows the main element of the second embodiment that represents switching system 1400.The induction electric energy that the second embodiment of switching system 1400 is configured to control power supply 1240 and induction electric energy transfer system 1100 again exports the connection between 1200.The special characteristic of the second embodiment of switching system is that trigger mechanism 1440 comprises pumping signal detector 1442, is configured to receive launch on one's own initiative pumping signal S by the signal projector 1444 relevant to induction electric energy receiver 300 '
a.
Various signal generator known in the art can be for the embodiment of active trigger mechanism 1440.Except other signals, pumping signal reflector 1444 is also launched mechanical signal, audio signal, supersonic speed signal, electromagnetic signal, infrared signal, radiofrequency signal etc.Typically, pumping signal reflector 1444 needs extra power supply 1360, electrochemical cell for example, and it is integrated in induction electric energy receiver 300 '.
When induction electric energy receiver 300 ' separates by intermediate materials and induction electric energy outlet 1200, pumping signal S
abeing chosen as can be by monitoring with induction electric energy outlet 1200 signal detectors that are associated 1442.Only, by the mode of non-limiting example, many materials are that part is translucent for infrared light.Had been found that the relatively low intensive infrared signal from LED etc. penetrates the common material of hundreds of micron, for example plastics, clamp, Fu meter Jia plastic facing or paper, this penetrates with enough angles the fluorescence detector after the 0.1mm plate of material such to 2mm can be received and processing signals.Fluorescence detector is such as being photodiode, phototransistor, photo resistance etc.For example, Everlight PD15-22C-TR8NPN photodiode can detect from the signal from Avago HSDL-4420LED in 850nm transmitting with 24 degree after 0.8mm Fu meter Jia plastic veneer.In order to send the object of signal, the decay of height can be tolerable, and a fraction of penetrating only, and the transmit signal strength such as 0.1% may be enough.
Below with reference to Fig. 3 a-h, show schematically showing of the various trigger mechanism 440A-H that use together with the embodiment with switching system.With particular reference to Fig. 3 a, the first embodiment of the 440A of magnetic trigger mechanism comprises reed switch 442A and accessory power supply 444A.
The magnetic element 482 being associated with induction electric energy receiver 300A is as passive exciter.The reed switch 442A of the first embodiment is magnetic switch, is selected such that when magnetic element 482 approaches reed switch 442A, and reed switch 442A is closed.Accessory power supply 444A is thus connected to the gate terminal of power supply MOSFET 422.When electronic signal arrives the gate terminal of MOSFET, between the source terminal of MOSFET 422 and drain electrode end, produce conductive path, thus power supply 240 is connected to induction electric energy outlet 200A.
When induction electric energy outlet disconnects from its main power source 240, select accessory power supply 444A electric energy is offered to trigger mechanism 440A.In the embodiment of trigger mechanism 440A, can use various accessory power supply 444A, such as electrochemical cell, capacitor etc., its can be configured to storage of electrical energy simultaneously when disconnecting induction electric energy outlet induction electric energy process and be connected to power supply 240 and use.Another accessory power supply can comprise generating element, such as solar cell, piezoelectric element, dynamical element etc.
Fig. 3 b shows the optional embodiment of trigger mechanism.The second embodiment of trigger mechanism 440B comprises hall-effect switch 441B.Hall-effect switch 442B can be configured to detect the increase in magnetic field, and this increase is and the result approaching according to the relevant exciting magnet element of electric energy receiver 300B.Should be understood that it is preferred that the hall-effect switch 442B of the second embodiment and the reed switch 442A of the first embodiment compare, wherein trigger mechanism is arranged in fixed magnetic field.For example, in this case, fixing alignment magnet 222 is associated with primary inductance 220.Hall-effect switch 442B can be configured to detect relevant to induction electric energy receiver 300B second the close of magnet 322 of aliging, and it is further used as the exciting magnet element 482 of trigger mechanism 440B.Will be further understood that other magnetic switchs can be as other embodiment of trigger mechanism, this is common to those skilled in the art.
The 3rd embodiment of trigger mechanism 440C has been shown in Fig. 3 c.The 3rd embodiment of trigger mechanism 440C comprises photovoltaic cell 442C, and it is converted to electric energy by light, produces thus the signal of telecommunication.When induction electric energy receiver 300C and induction electric energy outlet 200C aligns, the light inciding on photovoltaic cell 442C is blocked, and reduces thus to send to the electromotive force of the signal of telecommunication of circuit breaker 420.Thus, photovoltaic cell 442C can approaching for detection of induction electric energy receiver 300C.When correspondingly, circuit breaker 420 is configured to electromotive force when the signal of telecommunication from photovoltaic cell lower than threshold value, power supply 240 is connected to induction electric energy outlet 200C.
Should notice that the electromotive force being produced by single photovoltaic cell can be less than the driving voltage of MOSFET.For example, typical MOSFET can need the driving voltage of about 4-5V, and photovoltaic cell can produce the electromotive force that is less than 0.5V thus.In this case, a plurality of photovoltaic cells can be connected in series to increase the electromotive force generating.Alternatively, can use amplifying circuit, such as energy harvesting element etc.Other embodiment can trigger circuit breaker with photodiode or phototransistor.
The 4th embodiment of trigger mechanism has been shown in Fig. 3 d.The 4th embodiment of trigger mechanism 440D comprises piezoelectric element 442D, when this piezoelectric element 442 is placed under mechanical pressure, produces electromotive force.Piezoelectric element 442D is configured to withstanding pressure when induction electric energy receiver 300D aligns with primary inductance 220.As a result, when induction electric energy receiver aligns with primary inductance 220, produce the signal of telecommunication, this signal of telecommunication is used to forbid circuit breaker, for example, by the electromotive force of the gate terminal of MOSFET is increased to and is greater than threshold value.
With reference now to Fig. 3 e,, induction electric energy outlet 200E is shown as second embodiment with the 440E of magnetic trigger mechanism.Unlike above-mentioned and the first 440A of magnetic trigger mechanism Fig. 3 a associated description, the second embodiment of the 440E of magnetic trigger mechanism comprises the reed switch 442E that is connected to power supply 240.Alternatively, reed switch 442E is connected to power supply 240 by current limiting element (not shown), and current limiting element for example, such as being that resistor etc. provides to protect senser, reed switch 442E and MOSFET 422.Other embodiment can be used optional magnetic sensor, for example hall-effect switch.
When magnetic element 482E approaches the reed switch 442E of the second embodiment of magnetic trigger, reed switch 442E is closed.Thus, power supply 240 is connected to the gate terminal of power supply MOSFET 422 conventionally by current limit or other protection components.The signal of telecommunication arrives the gate terminal of MOSFET thus, produce conductive path, and power supply 240 is connected to induction electric energy outlet 200E between the source terminal of MOSFET422 and drain electrode end.Should notice that induction electric energy outlet 200E will not extract any electric current, unless the source electrode 428E that is magnetic triggers.
Below with reference to Fig. 3 f and 3g, further show induction electric energy outlet 200F, the 200G of two optional embodiment that are incorporated to trigger mechanism 440F, 440G, wherein capacitor 444F, 444G are as accessory power supply.Detector 442F, 442G are configured to, when applicable exciter 482F, 482G by being associated with induction electric energy receiver 300F, 300G encourage, to MOSFET 422, provide excitation potential.
With particular reference to Fig. 3 f, capacitor 444F is connected to power supply 240, by protection and/or current commutates element (not shown), bypass breaker MOSFET 422.Thus, capacitor 444F can be directly from power supply 240 chargings.Should be understood that very little charging current will initially be extracted by discharging capacitor 444F conventionally.Yet once capacitor 444F is charged completely, induction electric energy outlet 200F does not extract further electric current conventionally, until detector 442F is energized and extract electric energy from capacitor 444F.
Restriction is with reference to figure 3g; capacitor 444G is by MOSFET 422; typically by protection and/or current commutates element (not shown), be connected to power supply 240, make capacitor 444G not extract electric current until circuit breaker MOSFET 422 is connected to induction electric energy outlet 200G by power supply 240.
With reference now to Fig. 3 h,, show the main element of another trigger mechanism 440H.Trigger mechanism 440H can be incorporated to for excitation the circuit breaker 420H of another switching system of induction electric energy outlet 200H.Trigger mechanism 440H comprises microphone 442H, chargeable accessory power supply 444H and charging circuit 446H.
Microphone 442H is configured to detect the noise that the upper induction electric energy receiver 300H placing of induction electric energy outlet 200H produces.The sound being detected by microphone 442H can trigger the excitation of circuit breaker 420H so that power supply 240 is connected to induction electric energy outlet 200H via transformer 235 alternatively.
Should be understood that when power supply 240 disconnects with induction electric energy outlet 200H, accessory power supply 444H is necessary to power to microphone 442H.Thus, electrochemical cell, capacitor etc. can provide internal electric energy storage.Charging current 446H can regulate the charging of accessory power supply 444H.When appropriate, charging circuit 446H can operate to monitor the charged state of accessory power supply 444H, and the 200H of electric energy outlet is simultaneously dormancy, and as required charging circuit 446H is periodically reconnected to the rechargeable battery of accessory power supply 444H.
With reference now to Fig. 3 i,, shown circuit diagram shows the trigger mechanism 440I of example sound excitation, can operate induction electric energy is exported to (not shown) and be connected to power supply 240I.Trigger mechanism 440I comprises microphone 442I, exciter 448I, accessory power supply 444I and auxiliary charging circuit 446I.
AC power supplies 240I, for example electric main power supply, is connected to power supply adaptor 235I by circuit breaker 420I.Power supply adaptor 235I is configured to the AC from power supply 240I to input and be converted to the low voltage DC output being suitable for induction electric energy outlet power supply, is typically still also not exclusively about 18 volts.
Circuit breaker 420I comprises switch 422I and trigger 424I.Trigger 424I is configured to when the 440I of slave flipflop mechanism receives pumping signal energizing switch 422I so that power supply 240I is connected to power supply adaptor 235I.
Auxiliary charging circuit 446I is connected to the output of power supply adaptor 235I and can operates the accessory power supply 444I that charges, for example 3V battery.Accessory power supply 444I provides microphone 442I from electric energy to trigger mechanism 440I and exciter 448I.Thus, even between its rest period, microphone 442I can operate to monitor the sound that indication exists induction electric energy receiver (not shown).
Exciter 448I comprises sampler 443I, optical coupler 445I, active load detector 447I and accessory power supply monitor 449I.Optical coupler 445I is connected to the output of sampler 443I and can operates to encourage the trigger 424I of circuit breaker 420I, thereby power supply 240I is connected to power supply adaptor 235I.Sampler 443I is configured at least when microphone 442I detects sound, pumping signal be sent to optical coupler 445I.
Signal by microphone generating can be pulse.Yet when starting the pumping signal of optical coupler 445I, the prolongation signal that this sound can be produced by active load detector 447I keeps.
Active load detector 447I is configured to the voltage that monitoring offers the power supply of induction electric energy outlet.In the voltage fluctuation that offers the power supply of induction electric energy outlet, may indicate existence therefrom to extract the active load of electric energy.As long as active load detected, signal is sent to sampler 443I, and keeps the pumping signal of optical coupler 445I.
When active load stops extracting electric energy from induction electric energy outlet, for example, when equipment is charged completely or turn-offs, from the signal of active load detector 447I, will conventionally stop, having cancelled thus the pumping signal of optical coupler 445I.As a result, circuit breaker 420I can not work as when load is energized power supply 240I is disconnected from power supply adaptor 235I.
Accessory power supply watch-dog 449I is configured to monitor voltage that accessory power supply 444I generates and signal is sent to sampler 443I under voltage drops to threshold value time.Thus, when accessory power supply 444I need to charge again, pumping signal sends to optical coupler 445I, makes power supply 240I reconnect to power supply adaptor 235I, until the voltage on accessory power supply 444I is greater than threshold value.
The example of the circuit diagram of Fig. 3 i as possible sound stimulation trigger mechanism 440I is provided.Those of ordinary skills can use Fig. 3 i circuit distortion and in other trigger mechanism, use selectable unit.
The erroneous trigger that should be understood that trigger mechanism may represent the potential problems of switching system.Except for example can triggering the noise with the trigger mechanism of the sound stimulation of Fig. 3 h and 3i associated description, above-mentioned trigger mechanism 440A, the 440B relevant with 3e to Fig. 3 a, 3b.440E may be by near the incoherent magnet mistake excitation of induction electric energy receiver being positioned at magnetic switch.Similarly, by the embodiment of the trigger mechanism 440C with Fig. 3 c associated description, light sensation trigger mechanism can the wrong excitation by reducing of surround lighting.Again, by the embodiment of the above-mentioned trigger mechanism 440D relevant to Fig. 3 d, piezoelectric element can be pressed by other pressure sources, thus energizing switch system mistakenly.
The problem relevant to erroneous trigger can reduce by being incorporated to multistage initial procedure.In initial first stage process, the induction electric energy of dormancy outlet 200 can be triggered by for example above-mentioned switching system 400.Once be triggered, induction electric energy outlet 200 is connected to power supply, but keeps not working.In the second stage process starting, secondary Verification System can be used to authenticate the existence of induction electric energy receiver 300.If legal induction electric energy receiver 300 detected, induction electric energy outlet can be encouraged completely.When legal induction electric energy receiver not detected, circuit breaker 420 can be configured to induction electric energy outlet to disconnect from power supply, may be after one section of time delay.
With reference now to Fig. 4 a,, show the embodiment of Verification System 600, this Verification System 600 can be used to the authentication phase of multistage initial procedure.Verification System 600 is configured to prevent that induction electric energy outlet 2200 from sending electric energy in the situation that lack legal induction electric energy receiver 2300.
Induction electric energy outlet 2200 comprises primary coil 2220, links to power supply 2240, for being inductively coupled to the secondary coil 2320 with electronic load 2340 lines.Primary coil 2220 links to power supply 2240 by driver 2230, and this provides necessary electronic equipment to drive primary coil 2220.Determine that electronic equipment can comprise switch element, for example, provide high-frequency oscillation voltage to supply with.Electric energy exports 2200 and comprises in the situation of more than one primary coil 2220, and driver 2230 can comprise selector extraly, for selecting to drive that primary coil 2220.
With reference to figure 4b, show according to another embodiment of the invention schematically showing by the induction electric energy outlet 2200 of example magnetic transmission protective device 2100 protections.When the induction electric energy receiver 2300 of authentication aligns with protected electric energy outlet 2200, electric energy can only be provided by protected electric energy outlet 2200.
Protected electric energy outlet 2200 comprises magnetic transmission lock 2120, and the array of the magnetic switch 2122 that it is electrically connected to by serial between primary coil 2220 and driver 2230 forms.The magnetic that provides the array by magnetic element 2142 to form in the induction electric energy receiver 2300 of authentication is transmitted key 2140.
Select the configuration that is configured to magnetic switch 2122 in coupling transmission lock 2120 of the magnetic element 2142 in transmission key 2140.Can the induction electric energy receiver 2300 of authentication be alignd with protected induction outlet 2200 by transmission key 2140 and transmission lock 2120 are alignd and secondary coil 2320 is alignd with primary coil 2220.When correctly aliging, in transmission lock 2120 all magnetic switchs 2122 be closed and thus driver 2230 be connected to primary coil 2220.
The various examples of magnetic switch 2122 are being known in the art, and comprise such as reed switch, Hall effect transducer etc.Such magnetic switch 2122 can be responsive to any magnetic element 2142, for example arctic of permanent magnet or the South Pole, or solenoid.It will also be appreciated that Hall effect transducer can be configured to respond to the magnetic field of predetermined strength.
According to some embodiment, permanent magnet and ferromagnetic element that magnetic transmission key 2140 can be incorporated in induction electric energy receiver 2300 form.There is the characteristic in the magnetic field of such transmission key generation to depend on the intensity of permanent magnet and size and the characteristic of position and ferromagnetic element.Magnetic transmission lock 2120 switch arrays that can be magnetic form, one pole Hall switch for example, it is placed strategically and is located, and only makes when the particular combination by permanent magnet and ferromagnetic element triggers, and magnetic switch array is connected to driver 2230 by primary coil 2220.
Will be appreciated that long magnet is provided to help secondary coil 2320 to align with primary coil 2220 conventionally.Ferromagnetic element can also be usually included in induction electric energy receiver 2300, for the flux guidance from primary coil 2220 is offered to secondary coil.Magnetic transmission lock 2120 is responsive for these elements thus.In fact single magnetic transmission lock 2120 can be provided, and it is configured to detect various secondary units and selectively connects more than one primary coil 2220 according to the secondary units detecting.
With reference now to Fig. 4 a,, according to other embodiment of transmission protective device 2100, unit outlet 2200 can be by 2120 protections of transmission lock, when detector 2120 receives release signal S
rtime, can discharge transmission lock 2120.Release signal S
rcan have transmission key 2140 initiatively to send, or transmit alternatively key can guide release signal towards detector 2124 passively.
An example of passive transmission key 2140 has been shown in Fig. 4 c-e, and it represents according to the optical delivery protective device 2100 of further embodiment of the present invention.
Transmission protective device 2100 is comprised of with the passive optical transmission key 2140 ' that is incorporated to secondary units induction electric energy receiver 2300 ' the active optics transmission lock 2120 ' that is incorporated to induction electric energy outlet 2200 '.
With particular reference to Fig. 4 c, optical delivery lock 2120 ' comprises switch 2122 ', fluorescence detector 2124 ', optical launcher 2126 ', fluorescence detector is such as being photodiode, phototransistor, photo resistance etc., and optical launcher is for example light-emitting diode (LED).Switch 2122 ' is normally opened, but work as fluorescence detector 2124 ', receives release signal S
rtime, be configured to closure, thus primary coil 2220 is connected to driver 2230.Optical launcher 2126 ' is configured to transmitting optics release signal S
r, it can not be arrived by fluorescence detector 2124 ' direct-detection.
With reference now to Fig. 4 d,, optical delivery key 2140 ' comprises bridging element 2142 ', such as optical waveguide, light, reflector etc.Bridging element 2142 ' is configured to when secondary coil 2320 aligns with primary coil 2220, by optics release signal S
rfrom light emitters 2126 ', be directed to light detector 2124 '.
When secondary units induction electric energy receiver 2300 ' correctly aligns with induction electric energy outlet 2200 ', as shown in Fig. 4 e, secondary coil 2320 aligns with primary coil 2220, and passive optical transmission key 2140 ' aligns with optical delivery lock 2120 '.Optics release signal S
rby fluorescence detector 2124 ' detection and Closing Switch 2122 ', primary coil 2220 is connected to driver 2230 thus.
As mentioned above, many materials are translucent for infrared light.Had been found that the relatively low intensive infrared signal from LED etc. penetrates the common material of hundreds of micron, for example plastics, clamp, Fu meter Jia plastic facing or paper, this penetrates with enough angles the fluorescence detector after the 0.1mm plate of material such to 2mm can be received and processing signals.Fluorescence detector is such as being photodiode, phototransistor, photo resistance etc.For example, Everlight PD15-22C-TR8NPN photodiode can detect from the signal from AvagoHSDL-4420LED in 850nm transmitting with 24 degree after 0.8mm Fu meter Jia plastic veneer.In order to send the object of signal, the decay of height can be tolerable, and a fraction of penetrating only, and the transmit signal strength such as 0.1% may be enough.
Although described optical delivery key 2140 ' above, should be understood that other passive transmission key can be incorporated to bridging element, it is configured to guide the release signal of other types.For example, can be incorporated to ferromagnetic bridge for magnetic release signal is sent to magnetic detector from magnetic element, such as Hall effect transducer etc.In this case, magnetic reflector can be primary coil self.
Alternatively, audio signal can guide by intensive element, or for example along microwave waveguide, by low power microwave, guides.
Active optics transmission key 2140 has been shown in Fig. 4 f " example, represented transmission protective device 2100 according to another embodiment of the invention ".
The transmission protective device 2100 ' of the present embodiment ' comprise be incorporated into induction electric energy outlet 2200 " transmission lock 2120 " and be incorporated into secondary units induction electric energy receiver 2300 " active optics transmission key 2140 ".
Active optics transmission key 2140 " comprise optical reflector 2142 ", be configured to transmitting optics release signal S
r, and transmission lock 2120 " comprise switch 2122 " and fluorescence detector 2124 ".Transmission lock 2120 " be configured to Closing Switch 2122 ", thus when fluorescence detector 2124 " receive release signal S
rtime, primary coil 2200 is connected to driver 2230.
When secondary units induction electric energy receiver 2300 " with induction electric energy outlet 2200 " while align, transmit key 2400 " transmitting optics release signal S
r, it is by transmitting lock 2120 " fluorescence detector 2124 " receive and this makes switch 2122 " closure.Thus, induction electric energy outlet 2200 " make it possible to send electric energy to secondary coil 2320.
Be appreciated that release signal S
rcan be encoded one provides unique identifier.Coding can be undertaken by the modulation of frequency, pulse frequency, amplitude etc.For example, code can be used for authentication by secondary units for identification types or identification.Other data can be encoded to release signal extraly.These data can comprise delivery of electrical energy parameter, bill information or other information relevant to the use of electric energy outlet of needs.
Although described the active transmission key 2140 of optics above ", should be understood that other active transmission keys can launch the release signal of other types.For example, secondary coil 2320 can be used to magnetic release signal to send to the magnetic detector being incorporated in transmission lock.This can be Hall effect transducer etc. or or even primary coil 2220 self.
In order there to be seedbed transmitting release signal, transmission key needs unit conventionally.In some cases, particularly secondary units is incorporated in the situation of mancarried electronic aid, and the internal electric source battery in secondary units can provide electric energy.Alternatively, from being sent to the power pulse of secondary coil, primary coil can extract electric energy.
At some embodiment of the present invention, induction electric energy outlet low-yield power pulse of transmission cycle, for example the pulse of some milliseconds of duration can the frequency at 1 hertz be sent by primary coil.In the time of near secondary coil is positioned at primary coil, electric energy can be passed to secondary coil, and can be for key-powered to active transmission.
In other embodiment of transmission protective device, the first transmission key (preferably passive transmission key) being associated with secondary units induction electric energy receiver discharges the first transmission lock, and indication may exist secondary coil thus.Then primary coil is launched low-yield power pulse with key-powered to active the second transmission, and the second transmission key can discharge the second transmission lock, thus primary coil is connected to driver.
Fig. 5 illustrates the flow chart that uses the embodiment of switching system to control the method step that power supply and induction electric energy outlet be directly connected.
The method can have access phase, excitation phase and ending phase.This access phase comprises step below: step (a) directly provides circuit breaker at power supply and electric energy outlet; Step (b) is provided for forbidding the trigger switch of circuit breaker; Step (c) trigger switch detects pumping signal; Step (d) trigger switch sends to circuit breaker by inhibit signal; And step (e) circuit breaker is connected to induction electric energy outlet by power supply.
Excitation phase comprises step below: step (f) is waited for the authentication signal of the induction electric energy receiver of regarding for oneself; And step (g) authentication verification signal, if make not receive authentication signal, circuit breaker disconnects power supply from induction electric energy outlet.
Terminal procedure comprises step below: the outlet of step (h) induction electric energy receives complete charge signal from induction electric energy receiver; And step (i) circuit breaker power supply is disconnected from induction electric energy outlet.
Scope of the present invention has appended claim to limit, and comprises combination and sub-portfolio and distortion and the modification of above-mentioned different characteristic, and the above-mentioned those of ordinary skills of being by reading, can expect by the claims.
In the claims, word " comprises " and variation comprises listed element as indications such as " comprising ", " having ", but does not conventionally discharge other elements.
Claims (20)
1. a switching system, for controlling the connection between power supply and induction electric energy outlet, described induction electric energy outlet comprises at least one primary inductance, is configured to inductively be coupled to the secondary inductance being associated with induction electric energy receiver, and wherein said switching system comprises:
Circuit breaker, is configured to induction electric energy outlet and power supply to disconnect, and
Trigger switch, is configured to forbid circuit breaker when induction electric energy receiver exports close to induction electric energy.
2. switching system according to claim 1, wherein, described trigger switch comprises magnetic switch, for detection of the magnetic element being associated with induction electric energy receiver.
3. switching system according to claim 2, wherein, described magnetic switch comprises at least one switch that is selected from the group that reed switch and hall-effect switch form.
4. switching system according to claim 1, wherein, described trigger switch comprises the detector for detection of pumping signal.
5. switching system according to claim 4, wherein, described detector is configured to detect at least one signal that is selected from the group that mechanical signal, audio signal, ultrasonic signal, optical signalling and microwave signal form.
6. switching system according to claim 4, wherein, described signal is launched by described induction electric energy receiver.
7. switching system according to claim 1, also comprises for the power supply to described trigger switch power supply.
8. switching system according to claim 7, wherein, described power supply is the group of selecting free electrochemical cell, capacitor, piezoelectric crystal, solar cell, thermoelectric generator, electromagnetic generator and radio-frequency electromagnetic radiation collector to form.
9. switching system according to claim 7, wherein, induction electric energy outlet comprises at least one piezoelectric crystal, is configured to produce electromotive force when being compressed by induction electric energy receiver.
10. switching system according to claim 1, also comprises Verification System, is configured to, when described circuit breaker is prohibited, confirm the existence of described induction electric energy receiver.
11. switching systems according to claim 10, wherein, described circuit breaker is configured at all after dates of a period of time, described induction electric energy outlet be disconnected with power supply, unless Verification System confirms to exist described induction electric energy receiver.
12. switching systems according to claim 1, wherein, described trigger switch comprises photovoltaic cell.
13. switching systems according to claim 12, wherein, described photovoltaic cell is configured to provide electromotive force and when described electromotive force is during lower than threshold value, forbids described circuit breaker.
14. switching systems according to claim 1, wherein, described induction electric energy outlet comprises driver element, be configured to provides oscillating voltage on described primary inductance.
15. switching systems according to claim 1, wherein, described induction electric energy outlet comprises the communication line from described trigger switch to described circuit breaker.
16. switching systems according to claim 1, wherein, described trigger switch comprises voltage component.
17. switching systems according to claim 1, wherein, described sensing switch comprises microphone.
18. 1 kinds for controlling the method for the connection between the outlet of power supply and induction electric energy, said method comprising the steps of:
Step (a)-provide circuit breaker between described power supply and the outlet of described electric energy;
Step (b)-be provided for the forbidding trigger switch of described circuit breaker;
Step (c)-described trigger switch detects pumping signal;
Step (d)-described trigger switch is sent to described circuit breaker by inhibit signal; And
Step (e)-described breaking device is connected to described induction electric energy outlet by described power supply.
19. methods according to claim 18, also comprise following extra step:
Step (f)-wait is from the authentication signal of induction electric energy receiver; And
Step (g) if-do not receive authentication signal, described circuit breaker disconnects described power supply from described induction electric energy outlet.
20. methods according to claim 18, also comprise following extra step:
Step (h)-described induction electric energy outlet receives charging end signal from induction electric energy receiver; And
Step (i)-described circuit breaker disconnects the outlet of described power supply and described induction electric energy.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210287330.4A CN103595389A (en) | 2012-08-13 | 2012-08-13 | System and method for controlling connection between power supply and inductive power outlet |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210287330.4A CN103595389A (en) | 2012-08-13 | 2012-08-13 | System and method for controlling connection between power supply and inductive power outlet |
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|---|---|
| CN103595389A true CN103595389A (en) | 2014-02-19 |
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|---|---|---|---|
| CN201210287330.4A Pending CN103595389A (en) | 2012-08-13 | 2012-08-13 | System and method for controlling connection between power supply and inductive power outlet |
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| CN (1) | CN103595389A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107465239A (en) * | 2017-09-29 | 2017-12-12 | 努比亚技术有限公司 | Charge control method, charger, terminal and computer-readable recording medium |
| CN112977107A (en) * | 2021-05-13 | 2021-06-18 | 北京有感科技有限责任公司 | Vehicle charging system and stereo garage |
-
2012
- 2012-08-13 CN CN201210287330.4A patent/CN103595389A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107465239A (en) * | 2017-09-29 | 2017-12-12 | 努比亚技术有限公司 | Charge control method, charger, terminal and computer-readable recording medium |
| CN107465239B (en) * | 2017-09-29 | 2021-06-25 | 努比亚技术有限公司 | Charging control method, charger, terminal, and computer-readable storage medium |
| CN112977107A (en) * | 2021-05-13 | 2021-06-18 | 北京有感科技有限责任公司 | Vehicle charging system and stereo garage |
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Application publication date: 20140219 |