CN104362710A - Wireless charger and wireless charging system - Google Patents
Wireless charger and wireless charging system Download PDFInfo
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- CN104362710A CN104362710A CN201410557540.XA CN201410557540A CN104362710A CN 104362710 A CN104362710 A CN 104362710A CN 201410557540 A CN201410557540 A CN 201410557540A CN 104362710 A CN104362710 A CN 104362710A
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- H02J7/025—
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
- H02J7/0013—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries acting upon several batteries simultaneously or sequentially
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
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- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
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Abstract
The embodiment of the invention discloses a wireless charger and a wireless charging system. The wireless charger includes: the alternating current is accessed from an external power socket, and the direct current is obtained after rectification and filtering and is respectively output to the power amplification module and the rectification module of the modulation module; the modulation module modulates the input direct current into a first radio frequency electric wave and outputs the first radio frequency electric wave obtained by modulation to the power amplification module; the power amplification module is used for amplifying the power of the input first radio frequency electric wave by using the input direct current to obtain a second radio frequency electric wave and outputting the second radio frequency electric wave to the stopping module; the isolation direct current processing is carried out on the input second radio frequency electric wave to obtain a third radio frequency electric wave, and the third radio frequency electric wave is output to a blocking module of the radio frequency emission module; and a radio frequency transmitting module for performing resonance processing on the input third radio frequency electric wave to obtain a fourth radio frequency electric wave and transmitting the obtained fourth radio frequency electric wave. By applying the invention, the use efficiency of the electronic equipment can be improved, and the charging efficiency of the power supply can be improved.
Description
Technical field
The present invention relates to computer equipment charging technique, particularly relate to a kind of wireless charger and wireless charging system.
Background technology
Along with mobile communication technology, especially 3G, the development of the 4G communication technology, computer equipment, such as, mobile phone in mobile electronic device, the function of personal digital assistant and Intelligent worn device from strength to strength, mobile electronic device is by adopting open operating system, corresponding application program can be loaded to realize corresponding application function, become collection call, note, network insertion, video display amusement, network instant communication, e-Bank payment, online game, the comprehensive computer equipment that digital map navigation is integrated, that user lives, work, leisure, the important carrier of amusement.
Day by day incorporate user's life at mobile electronic device, application function is gradually improved, while bringing great advantage to the user and improving Consumer's Experience, because the application program of loading gets more and more, application function is more and more complete, make the power consumption of mobile electronic device increasing, due to the limitation of battery capacity in mobile electronic device, the time causing battery electric quantity to work is also shorter and shorter, needs charge continually or change reserve battery to ensure the normal operation of mobile electronic device.
Existing mobile electronic device to be charged, general employing wired mode, by mobile electronic device by wired mode connecting charger, and then charger is inserted supply socket, but the method, user is needed to carry connecting line at any time, and each supply socket can only be supplied to a user charges, the charge requirement of multi-user cannot be met, and when user leaves behind connecting line, cannot charge, further, when mobile electronic device charges, if user needs to use mobile electronic device, can only centered by charger, connecting line is in the region of radius, use very inconvenient, thus the applied business that have impact on user is experienced.
In order to avoid user leaves behind the defect that connecting line and a power supply can only be a mobile electronic device charging, prior art is improved for charger, namely electromagnetic induction principle is utilized, charger with carry out electromagnetic induction with electronic equipment by coil, thus charge from charger acquisition electric energy, namely transmission coil is set in charger, in mobile electronic device, receiving coil is set, by sending the electric current of coil applying change with the change that generates an electromagnetic field, the electromagnetic field couples of change is to receiving coil, receiving coil is made to produce charging current or charging voltage, thus the wireless charging realized mobile electronic device, without the need to mobile electronic device and charger being carried out wired connection by connecting line.But the method, the distance that can act on due to electromagnetic induction is very limited, is generally least bit meter level, thus, can hold the mobile electronic device limited amount of charging, makes the charge efficiency of power supply still not high; Further, in mobile electronic device charging process, cannot use or be difficult to use mobile electronic device, that is, when user uses mobile electron to carry out applied business by equipment, need to keep the distance of mobile electronic device and charger can not exceed the electromagnetic induction operating distance of coil, the applied business of very inconvenient user uses, reduce the service efficiency of mobile electronic device, also cause customer service to be experienced and decline.
Summary of the invention
In view of this, the embodiment of the present invention provides a kind of wireless charger and wireless charging system, promotes the service efficiency of electronic equipment, improves the charge efficiency of power supply.
For achieving the above object, embodiments of the invention adopt following technical scheme:
On the one hand, the embodiment of the present invention provides a kind of wireless charger, comprising: rectification module, modulation module, power amplifier module, every straight module and radiofrequency emitting module, wherein,
Rectification module, for from external power receptacle incoming transport electricity, obtains direct current after carrying out rectification and filtering, exports power amplifier module and modulation module respectively to;
Modulation module, for the direct current of input is modulated to the first rf wave, exports power amplifier module to by modulating the first rf wave obtained;
Power amplifier module, for utilizing the direct current of input, after carrying out power amplification, obtaining the second rf wave and exporting to every straight module the first rf wave of input;
Every straight module, for the second rf wave of input is carried out isolated DC electric treatment, obtain the 3rd rf wave, export radiofrequency emitting module to;
Radiofrequency emitting module, for carrying out resonance process to the 3rd rf wave of input, obtain the 4th rf wave, and the 4th rf wave obtained is launched, after receiving to make mobile electronic device the 4th rf wave launched, carry out rectification and filtering, obtain the direct current in order to charge to battery.
Preferably, described rectification module comprises: primary coil, secondary coil and current rectifying and wave filtering circuit, wherein,
Primary coil, for from external power receptacle incoming transport electricity, carries out elementary transformation;
Secondary coil, for from primary coil coupling alternating current, obtains the alternating current of step-down, inputs to current rectifying and wave filtering circuit;
Current rectifying and wave filtering circuit, for carrying out rectification and filtering to the alternating current of input, obtaining direct current, and exporting power amplifier module and modulation module respectively to.
Preferably, described modulation module comprises: control circuit for pulse-width modulation and radio-frequency signal generator, wherein,
Control circuit for pulse-width modulation, for the direct current according to input, generating the pulse-width modulation control signal for controlling the first rf wave frequency, exporting radio-frequency signal generator to;
Radio-frequency signal generator, for the pulse-width modulation control signal according to input, adjustment, according to the first rf wave of the direct current generation of input, exports power amplifier module to by modulating the first rf wave obtained.
Preferably, described radiofrequency emitting module comprises: resonant capacitance and transmitting antenna, wherein,
Resonant capacitance is in parallel with transmitting antenna, for forming resonant circuit under the control of the 3rd rf wave, and resonance process is carried out to the 3rd rf wave of input, obtain the 4th rf wave, and the 4th rf wave obtained is launched, after receiving to make mobile electronic device the 4th rf wave launched, carry out rectification and filtering, obtain the direct current in order to charge to battery.
Preferably, comprise further:
Overcurrent protection module, for detecting the output current of power amplifier module, if detect the output current obtained to exceed the output current threshold value pre-set, notice modulation module reduces the first rf wave exported.
Preferably, comprise further:
Overtemperature prote module, for detecting power tube temperature in power amplifier module, if detect the power tube temperature obtained to exceed the temperature threshold pre-set, the fan started in power amplifier module is lowered the temperature.
Preferably, comprise further: rf wave adjustment module, transmitting power detection module, received power module and power conditioning module, wherein,
Rf wave adjustment module, for regulating the resonant parameter of radiofrequency emitting module, makes the 4th rf wave frequency change in 110-205KHz, and in the 4th rf wave launched, carries the information requiring that mobile electronic device reports received power;
Transmitting power detection module, for after rf wave adjustment module regulates the 4th rf wave frequency each time, detects the transmitting power of radiofrequency emitting module;
Received power module, for after rf wave adjustment module regulates the 4th rf wave frequency each time, receives the received power that mobile electronic device reports;
Power conditioning module, for after rf wave adjustment module regulates the 4th rf wave frequency each time, calculate the business of received power and transmitting power, obtain charge efficiency, the 4th rf wave frequency when acquisition charge efficiency is the highest, regulate the resonant parameter of radiofrequency emitting module, make in the 4th rf wave frequency of the 4th rf wave frequency stabilization when described charge efficiency is the highest.
Preferably, comprise further:
Counting statistics module, for after the resonant parameter of rf wave adjustment module adjustment radiofrequency emitting module, the mobile electronic device that new access wireless charger charges is counted, when count value exceedes the count threshold pre-set, notice rf wave adjustment module performs the flow process of the resonant parameter regulating radiofrequency emitting module, and count value is reset.
Preferably, comprise further:
Residue charge volume statistical module, for after the resonant parameter of rf wave adjustment module adjustment radiofrequency emitting module, detect that new access wireless charger carries out the mobile electronic device charged, that adds up the mobile electronic device of each charging does not complete charge volume, if statistics do not complete charge volume exceed pre-set do not complete charge volume threshold value, notice rf wave adjustment module performs the flow process of the resonant parameter regulating radiofrequency emitting module.
Preferably, comprise further: counting statistics module and residue charge volume statistical module, wherein,
Counting statistics module, for after the resonant parameter of rf wave adjustment module adjustment radiofrequency emitting module, the mobile electronic device that new access wireless charger charges is counted, when count value exceedes the count threshold pre-set, notice residue charge volume statistical module, and count value is reset;
Residue charge volume statistical module, for reception notification, that adds up the mobile electronic device of each charging does not complete charge volume, if statistics do not complete charge volume exceed pre-set do not complete charge volume threshold value, notice rf wave adjustment module performs the flow process of the resonant parameter regulating radiofrequency emitting module.
Preferably, comprise further: access module, wireless communication module and charge control module, wherein,
Access module, for broadcast wireless networks access signal, receives the wireless network access response signal that mobile electronic device returns, by described mobile electronic device access wireless charger;
Wireless communication module, for after mobile electronic device access wireless charger, receives the charge request from mobile electronic device, sends charge notification to charge control module; Receive the charging complete information from mobile electronic device, send charging termination notice to charge control module;
Charge control module, for receiving charge notification, the path of conducting rectification module and external power receptacle, to make rectification module incoming transport electricity; Reception charging termination notifies, disconnects the path of rectification module and external power receptacle.
Preferably, comprise further:
Charge storage module, for at rectification module after external power receptacle incoming transport electricity, the direct current that rectification module exports is stored, to make wireless charger under the scene that there is not alternating current, the direct current stored is exported, to charge to the mobile electronic device of access wireless charger to power amplifier module and modulation module.
The wireless charger that the embodiment of the present invention provides, based on rf wave send-receive principle, rectification module carries out rectification, filtering to alternating current, direct current is modulated to rf wave and carries out power amplifier through power amplifier module by modulation module, carry out every straight process every straight module to the rf wave of power amplifier, radiofrequency emitting module is converted to rf wave carries out wireless transmission by every directly processing the electric wave obtained.Send owing to adopting rf wave mode, can charging be provided within the scope of several meters multiple mobile electronic device entered in wireless charger transmitting boundary, the charge efficiency of power supply is effectively promoted, in mobile electronic device charging process, user can use mobile electronic device in the scope of several meters, extend User Activity scope, improve the service efficiency of mobile electronic device.
On the other hand, the embodiment of the present invention provides a kind of wireless charging system, comprising: wireless charger and mobile electronic device, wherein,
Wireless charger, for electric from external power receptacle incoming transport, direct current is obtained after carrying out rectification and filtering, the direct current obtained is modulated to the first rf wave, and utilize the direct current obtained, power amplification is carried out to the first rf wave of modulation, obtain the second rf wave, the second rf wave obtained is carried out isolated DC electric treatment, obtain the 3rd rf wave, resonance process is carried out to the 3rd rf wave obtained, obtains the 4th rf wave, and the 4th rf wave obtained is launched;
Mobile electronic device, for receiving the 4th rf wave that wireless charger is launched, carrying out rectification and filtering, obtains the direct current in order to charge to battery and charge to battery.
Preferably, described wireless charger comprises: rectification module, modulation module, power amplifier module, every straight module and radiofrequency emitting module, wherein,
Rectification module, for from external power receptacle incoming transport electricity, obtains direct current after carrying out rectification and filtering, exports power amplifier module and modulation module respectively to;
Modulation module, for the direct current of input is modulated to the first rf wave, exports power amplifier module to by modulating the first rf wave obtained;
Power amplifier module, for utilizing the direct current of input, after carrying out power amplification, obtaining the second rf wave and exporting to every straight module the first rf wave of input;
Every straight module, for the second rf wave of input is carried out isolated DC electric treatment, obtain the 3rd rf wave, export radiofrequency emitting module to;
Radiofrequency emitting module, for carrying out resonance process to the 3rd rf wave of input, obtain the 4th rf wave, and the 4th rf wave obtained is launched, after receiving to make mobile electronic device the 4th rf wave launched, carry out rectification and filtering, obtain the direct current in order to charge to battery.
Preferably, described mobile electronic device comprises: Receiver Module, rectification filtering module and charging module, wherein,
Receiver Module, for receiving the 4th rf wave that wireless charger is launched, exports rectification filtering module to;
Rectification filtering module, for carrying out rectifying and wave-filtering to obtain direct current to the 4th rf wave of input, exports charging module to;
Charging module, for charging to battery according to the direct current of input.
Preferably, described Receiver Module comprises: resonance receives electric capacity and reception antenna, wherein,
It is in parallel with reception antenna that resonance receives electric capacity, and form resonant circuit, the resonance frequency of described resonant circuit is consistent with the resonance frequency of described resonant capacitance and transmitting antenna, receives the 4th rf wave for making reception antenna.
Preferably, comprise further: electric quantity monitoring module, network access module and communication module, wherein,
Electric quantity monitoring module, for monitoring battery electric quantity, if the battery electric quantity that monitoring obtains is lower than the power threshold pre-set, informing network access module; After monitoring battery charging complete, notice communication module;
Network access module, for reception notification, the wireless network access signal of search wireless charger broadcast, if search wireless network access signal, according to searching for the wireless network access signal access wireless charger obtained;
Communication module, for after access wireless charger, sends charge request to wireless charger; Receive the notice that electric quantity monitoring module sends, send charging complete information to wireless charger.
The wireless charging system that the embodiment of the present invention provides, based on rf wave send-receive principle, wireless charger carries out rectification, filtering to alternating current, direct current is modulated to rf wave and carries out power amplifier, carry out every straight process to the rf wave of power amplifier, be converted to rf wave carry out wireless transmission, mobile electronic device received RF electric wave by every directly processing the electric wave obtained, carry out rectification and filtering, obtain the direct current in order to charge to battery and battery is charged.Send owing to adopting rf wave mode, can charging be provided within the scope of several meters multiple mobile electronic device entered in wireless charger transmitting boundary, the charge efficiency of power supply is effectively promoted, in mobile electronic device charging process, user can use mobile electronic device in the scope of several meters, extend User Activity scope, improve the service efficiency of mobile electronic device.
Accompanying drawing explanation
In order to be illustrated more clearly in the embodiment of the present invention or technical scheme of the prior art, be briefly described to the accompanying drawing used required in embodiment or description of the prior art below, apparently, accompanying drawing in the following describes is only some embodiments of the present invention, for those of ordinary skill in the art, under the prerequisite not paying creative work, other accompanying drawing can also be obtained according to these accompanying drawings.
Fig. 1 is embodiment of the present invention wireless charger structural representation;
Fig. 2 is embodiment of the present invention wireless charging system structural representation.
Embodiment
Below in conjunction with accompanying drawing, the embodiment of the present invention is described in detail.
Should be clear and definite, described embodiment is only the present invention's part embodiment, instead of whole embodiments.Based on the embodiment in the present invention, those of ordinary skill in the art, not making other embodiments all obtained under creative work prerequisite, belong to the scope of protection of the invention.
Fig. 1 is embodiment of the present invention wireless charger structural representation.See Fig. 1, this wireless charger comprises: rectification module 101, modulation module 102, power amplifier module 103, every straight module 104 and radiofrequency emitting module 105, wherein,
Rectification module 101, for from external power receptacle incoming transport electricity, obtains direct current after carrying out rectification and filtering, exports power amplifier module 103 and modulation module 102 respectively to;
In the embodiment of the present invention, full-wave rectification can be adopted to obtain direct current, halfwave rectifier also can be adopted to obtain direct current, bridge rectifier can also be adopted to obtain direct current etc., and the embodiment of the present invention is not construed as limiting this.
As embodiment, rectification module 101 comprises: primary coil, secondary coil and current rectifying and wave filtering circuit (not shown), wherein,
Primary coil, for from external power receptacle incoming transport electricity, carries out elementary transformation;
Secondary coil, for from primary coil coupling alternating current, obtains the alternating current of step-down, inputs to current rectifying and wave filtering circuit;
Current rectifying and wave filtering circuit, for carrying out rectification and filtering to the alternating current of input, obtaining direct current, and exporting power amplifier module 103 and modulation module 102 respectively to.
In the embodiment of the present invention, current rectifying and wave filtering circuit is aforesaid full-wave rectifying circuit, or half-wave rectifying circuit, or bridge rectifier.
Modulation module 102, for the direct current of input is modulated to the first rf wave, exports power amplifier module 103 to by modulating the first rf wave obtained;
In the embodiment of the present invention, as embodiment, modulation module 102 comprises: pulse-width modulation (PWM, Pulse Width Modulation) control circuit and radio-frequency signal generator (not shown), wherein,
Control circuit for pulse-width modulation, for the direct current according to input, generating the pulse-width modulation control signal for controlling the first rf wave frequency, exporting radio-frequency signal generator to;
In the embodiment of the present invention, as an embodiment, control circuit for pulse-width modulation can be an ON-OFF control circuit, and ON-OFF control circuit can be field-effect transistor or CMOS (Complementary Metal Oxide Semiconductor) transistor etc.For field-effect transistor, the grid access direct current of field-effect transistor, drain electrode output pulse width modulator control signal, source ground.
Radio-frequency signal generator, for the pulse-width modulation control signal according to input, adjustment, according to the first rf wave of the direct current generation of input, exports power amplifier module 103 to by modulating the first rf wave obtained.
Preferably, the first rf wave is a square wave.The amplitude of square wave and duty ratio can adjust according to pulse-width modulation control signal.In practical application, can also according to actual needs, the amplitude of square wave and duty ratio are adjusted in real time.
Power amplifier module 103, for utilizing the direct current of input, after carrying out power amplification, obtaining the second rf wave and exporting to every straight module 104 the first rf wave of input;
Every straight module 104, for the second rf wave of input is carried out isolated DC electric treatment, obtain the 3rd rf wave, export radiofrequency emitting module 105 to;
In the embodiment of the present invention, can be electric capacity every straight module 104.
Radiofrequency emitting module 105, for carrying out resonance process to the 3rd rf wave of input, obtain the 4th rf wave, and the 4th rf wave obtained is launched, after receiving to make mobile electronic device the 4th rf wave launched, carry out rectification and filtering, obtain the direct current in order to charge to battery.
In the embodiment of the present invention, the charge frequency specified due to radio rechargeable standard is 110-205KHz, and thus, the 4th rf wave frequency obtained by resonance process is 110-205KHz.Be known technology about the handling process of the 4th rf wave being carried out radio-frequency transmissions, omit detailed description at this.
As an embodiment, radiofrequency emitting module 105 comprises: resonant capacitance and transmitting antenna (not shown), wherein,
Resonant capacitance is in parallel with transmitting antenna, for forming resonant circuit under the control of the 3rd rf wave, and resonance process is carried out to the 3rd rf wave of input, obtain the 4th rf wave, and the 4th rf wave obtained is launched, after receiving to make mobile electronic device the 4th rf wave launched, carry out rectification and filtering, obtain the direct current in order to charge to battery.
As an embodiment, this wireless charger can further include:
Overcurrent protection module 106, for detecting the output current of power amplifier module 103, if detect the output current obtained to exceed the output current threshold value pre-set, notice modulation module 102 reduces the first rf wave exported.
As another embodiment, this wireless charger can further include:
Overtemperature prote module 107, for detecting power tube temperature in power amplifier module 103, if detect the power tube temperature obtained to exceed the temperature threshold pre-set, the fan started in power amplifier module 103 is lowered the temperature.
Preferably, in order to effectively promote the charge efficiency of wireless charger, the charge efficiency of wireless charger is made to reach optimum, this wireless charger can further include: rf wave adjustment module 108, transmitting power detection module 109, received power module 110 and power conditioning module 111, wherein
Rf wave adjustment module 108, for regulating the resonant parameter of radiofrequency emitting module 105, makes the 4th rf wave frequency change in 110-205KHz, and in the 4th rf wave launched, carries the information requiring that mobile electronic device reports received power;
In the embodiment of the present invention, can regulate the 4th rf wave frequency according to the frequency adjustment threshold value pre-set, such as, take 5KHz as frequency adjustment threshold value.Namely by regulating resonant parameter, the 4th rf wave frequency is sequentially: 110KHz, 115KHz, 120KHz ..., 200KHz, 205KHz.
Transmitting power detection module 109, for after rf wave adjustment module 108 regulates the 4th rf wave frequency each time, detects the transmitting power of radiofrequency emitting module 105;
Received power module 110, for after rf wave adjustment module 108 regulates the 4th rf wave frequency each time, receives the received power that mobile electronic device reports;
In the embodiment of the present invention, if having multiple mobile electronic device in charging, then the received power sum that each mobile electronic device calculating reception reports, regulate the received power after the 4th rf wave frequency as rf wave adjustment module 108 each time.
Power conditioning module 111, for after rf wave adjustment module 108 regulates the 4th rf wave frequency each time, calculate the business of received power and transmitting power, obtain charge efficiency, the 4th rf wave frequency when acquisition charge efficiency is the highest, regulate the resonant parameter of radiofrequency emitting module 105, make in the 4th rf wave frequency of the 4th rf wave frequency stabilization when described charge efficiency is the highest.
In practical application, charge in order to avoid often there being a new mobile electronic device access wireless charger, the frequent operation needing rf wave adjustment module 108 to regulate the resonant parameter of radiofrequency emitting module 105 to cause, in the embodiment of the present invention, this wireless charger can further include: counting statistics module 112 and residue charge volume statistical module 113, wherein
Counting statistics module 112, for regulate radiofrequency emitting module 105 in rf wave adjustment module 108 resonant parameter after, the mobile electronic device that new access wireless charger charges is counted, when count value exceedes the count threshold pre-set, notice residue charge volume statistical module 113, and count value is reset;
In the embodiment of the present invention, count threshold can be arranged according to actual needs, such as, can be set to 2,4,5 etc.After the mobile electronic device number only carrying out charging at new access wireless charger exceedes this count threshold, just can trigger the possibility that rf wave adjustment module 108 carries out resonant parameter adjustment.
Residue charge volume statistical module 113, for reception notification, that adds up the mobile electronic device of each charging does not complete charge volume, if statistics do not complete charge volume exceed pre-set do not complete charge volume threshold value, notice rf wave adjustment module 108 performs the flow process of the resonant parameter regulating radiofrequency emitting module 105.
In the embodiment of the present invention, after the mobile electronic device number that newly access wireless charger carries out charging exceedes count threshold, further judge each mobile electronic device total do not complete charge volume whether exceed pre-set do not complete charge volume threshold value, if, then can regulate the resonant parameter of radiofrequency emitting module 105, to make radiofrequency emitting module 105 be operated in optimum state, if not, then without the need to regulating.
In the embodiment of the present invention, not completing charge volume threshold value can be arranged according to actual needs.
Certainly, in practical application, as another embodiment, charge avoiding often having a new mobile electronic device access wireless charger, during the frequent operation needing rf wave adjustment module 108 to regulate the resonant parameter of radiofrequency emitting module 105 to cause, wireless charger can only include counting statistics module 112 or residue charge volume statistical module 113.Such as, to comprise counting statistics module 112 and residue charge volume statistical module 113 respectively, then wireless charger may further include:
Counting statistics module 112, for regulate radiofrequency emitting module 105 in rf wave adjustment module 108 resonant parameter after, the mobile electronic device that new access wireless charger charges is counted, when count value exceedes the count threshold pre-set, notice rf wave adjustment module 108 performs the flow process of the resonant parameter regulating radiofrequency emitting module 105, and count value is reset.
As an embodiment again, wireless charger may further include:
Residue charge volume statistical module 113, for regulate radiofrequency emitting module 105 in rf wave adjustment module 108 resonant parameter after, detect that new access wireless charger carries out the mobile electronic device charged, that adds up the mobile electronic device of each charging does not complete charge volume, if statistics do not complete charge volume exceed pre-set do not complete charge volume threshold value, notice rf wave adjustment module 108 performs the flow process of the resonant parameter regulating radiofrequency emitting module 105.
In the embodiment of the present invention, when wireless charger charges to each mobile electronic device, by the charge frequency that traversal radio rechargeable standard specifies, and at each frequency place, gather the transmitting power of radiofrequency emitting module 105 and the received power of each mobile electronic device, thus calculate the charge efficiency of wireless charger, the tranmitting frequency of radiofrequency emitting module 105 corresponding when therefrom can obtain optimum charge efficiency, and make radiofrequency emitting module 105 be stabilized in this tranmitting frequency, can ensure that the charge efficiency of wireless charger reaches optimum.
As an embodiment again, this wireless charger can further include: access module, wireless communication module and charge control module (not shown), wherein,
Access module, for broadcast wireless networks access signal, receives the wireless network access response signal that mobile electronic device returns, by described mobile electronic device access wireless charger;
In the embodiment of the present invention, wireless charger is built-in with wireless network card, can send wireless signal by wireless network card, such as, and wireless network access signal, rf wave etc.
As an embodiment, wireless network card can be bluetooth network card, by the mobile electronic device in low-power consumption bluetooth (BluetoothLE, Bluetooth Low Energy) location technology search coverage.As another embodiment, wireless network card also can be Wireless Fidelity (Wi-Fi, Wireless Fidelity) network interface card, such as, for the wireless charger being built-in with Wireless Fidelity network interface card, it is equivalent to a Wireless Fidelity router or Wireless Fidelity access point (AP, Access Point).
In practical application, access module by timing mode broadcast wireless networks access signal, also can access signal by not timing mode broadcast wireless networks.
Wireless communication module, for after mobile electronic device access wireless charger, receives the charge request from mobile electronic device, sends charge notification to charge control module; Receive the charging complete information from mobile electronic device, send charging termination notice to charge control module;
Charge control module, for receiving charge notification, the path of conducting rectification module 101 and external power receptacle, to make rectification module 101 incoming transport electricity; Reception charging termination notifies, disconnects the path of rectification module 101 and external power receptacle.
As an embodiment again, this wireless charger can further include:
Charge storage module (not shown), for at rectification module 101 after external power receptacle incoming transport electricity, the direct current that rectification module 101 exports is stored, to make wireless charger under the scene that there is not alternating current, the direct current stored is exported, to charge to the mobile electronic device of access wireless charger to power amplifier module 103 and modulation module 102.
From above-mentioned, the wireless charger of the embodiment of the present invention, based on rf wave send-receive principle, be equivalent to a signal tower, by carrying out rectification, filtering, modulation, power amplifier and after straight process to alternating current, radiofrequency emitting module is converted to rf wave carries out wireless transmission by every directly processing the electric wave obtained, rf wave is high-frequency current, thus by being connected the Receiver Module received RF radio wave energy of the mobile electronic device accessing wireless charger by Wi-Fi or bluetooth, obtain direct current after carrying out rectifying and wave-filtering to charge to battery.Charge owing to adopting rf wave mode, can charging be provided within the scope of several meters multiple mobile electronic device entered in wireless charger transmitting boundary, add the mobile electronic device quantity can holding charging, the charge efficiency of power supply is effectively promoted, it can be the charging of multiple mobile electronic device simultaneously, save the time needed for charging, also reduce charging cost; Further, in mobile electronic device charging process, user can use mobile electronic device in the scope of several meters (rf wave operating distances), extend User Activity scope, user friendly applied business uses, improve the service efficiency of mobile electronic device, improve customer service and experience.
Fig. 2 is embodiment of the present invention wireless charging system structural representation.See Fig. 2, this wireless charging system comprises: wireless charger 201 and mobile electronic device 202, wherein,
As embodiment, wireless charger 201 quantity is 1, and mobile electronic device 202 quantity is one or more.
Wireless charger 201, for electric from external power receptacle incoming transport, direct current is obtained after carrying out rectification and filtering, the direct current obtained is modulated to the first rf wave, and utilize the direct current obtained, power amplification is carried out to the first rf wave of modulation, obtain the second rf wave, the second rf wave obtained is carried out isolated DC electric treatment, obtain the 3rd rf wave, resonance process is carried out to the 3rd rf wave obtained, obtains the 4th rf wave, and the 4th rf wave obtained is launched;
Mobile electronic device 202, for receiving the 4th rf wave that wireless charger 201 is launched, carrying out rectification and filtering, obtains the direct current in order to charge to battery and charge to battery.
In the embodiment of the present invention, as embodiment, wireless charger 201 comprises: rectification module, modulation module, power amplifier module, every straight module and radiofrequency emitting module (not shown), wherein,
Rectification module, for from external power receptacle incoming transport electricity, obtains direct current after carrying out rectification and filtering, exports power amplifier module and modulation module respectively to;
Modulation module, for the direct current of input is modulated to the first rf wave, exports power amplifier module to by modulating the first rf wave obtained;
Power amplifier module, for utilizing the direct current of input, after carrying out power amplification, obtaining the second rf wave and exporting to every straight module the first rf wave of input;
Every straight module, for the second rf wave of input is carried out isolated DC electric treatment, obtain the 3rd rf wave, export radiofrequency emitting module to;
Radiofrequency emitting module, for carrying out resonance process to the 3rd rf wave of input, obtain the 4th rf wave, and the 4th rf wave obtained is launched, after receiving to make mobile electronic device 202 the 4th rf wave launched, carry out rectification and filtering, obtain the direct current in order to charge to battery.
As an embodiment, this wireless charger 201 can further include:
Overcurrent protection module (not shown), for detecting the output current of power amplifier module, if detect the output current obtained to exceed the output current threshold value pre-set, notice modulation module reduces the first rf wave exported.
As another embodiment, this wireless charger 201 can further include:
Overtemperature prote module (not shown), for detecting power tube temperature in power amplifier module, if detect the power tube temperature obtained to exceed the temperature threshold pre-set, the fan started in power amplifier module is lowered the temperature.
As an embodiment again, this wireless charger 201 can further include: rf wave adjustment module, transmitting power detection module, received power module and power conditioning module (not shown), wherein,
Rf wave adjustment module, for regulating the resonant parameter of radiofrequency emitting module, makes the 4th rf wave frequency change in 110-205KHz, and in the 4th rf wave launched, carries the information requiring that mobile electronic device 202 reports received power;
Transmitting power detection module, for after rf wave adjustment module regulates the 4th rf wave frequency each time, detects the transmitting power of radiofrequency emitting module;
Received power module, for after rf wave adjustment module regulates the 4th rf wave frequency each time, receives the received power that mobile electronic device 202 reports;
Power conditioning module, for after rf wave adjustment module regulates the 4th rf wave frequency each time, calculate the business of received power and transmitting power, obtain charge efficiency, the 4th rf wave frequency when acquisition charge efficiency is the highest, regulate the resonant parameter of radiofrequency emitting module, make in the 4th rf wave frequency of the 4th rf wave frequency stabilization when described charge efficiency is the highest.
As an embodiment again, this wireless charger 201 can further include:
Counting statistics module (not shown), for after the resonant parameter of rf wave adjustment module adjustment radiofrequency emitting module, the mobile electronic device 202 that new access wireless charger 201 charges is counted, when count value exceedes the count threshold pre-set, notice rf wave adjustment module performs the flow process of the resonant parameter regulating radiofrequency emitting module, and count value is reset.
As an embodiment again, this wireless charger 201 can further include:
Residue charge volume statistical module (not shown), for after the resonant parameter of rf wave adjustment module adjustment radiofrequency emitting module, detect that new access wireless charger 201 carries out the mobile electronic device 202 charged, that adds up the mobile electronic device 202 of each charging does not complete charge volume, if statistics do not complete charge volume exceed pre-set do not complete charge volume threshold value, notice rf wave adjustment module performs the flow process of the resonant parameter regulating radiofrequency emitting module.
As an embodiment again, this wireless charger 201 can further include: access module, wireless communication module and charge control module (not shown), wherein,
Access module, for broadcast wireless networks access signal, receives the wireless network access response signal that mobile electronic device 202 returns, described mobile electronic device 202 is accessed wireless charger 201;
Wireless communication module, for after mobile electronic device 202 accesses wireless charger 201, receives the charge request from mobile electronic device 202, sends charge notification to charge control module; Receive the charging complete information from mobile electronic device 202, send charging termination notice to charge control module;
Charge control module, for receiving charge notification, the path of conducting rectification module and external power receptacle, to make rectification module incoming transport electricity; Reception charging termination notifies, disconnects the path of rectification module and external power receptacle.
As an embodiment again, this wireless charger 201 can further include:
Charge storage module (not shown), for at rectification module after external power receptacle incoming transport electricity, the direct current that rectification module exports is stored, to make wireless charger 201 under the scene that there is not alternating current, the direct current stored is exported, to charge to the mobile electronic device 202 of access wireless charger 201 to power amplifier module and modulation module.
In the embodiment of the present invention, as embodiment, mobile electronic device 202 comprises: Receiver Module, rectification filtering module and charging module (not shown), wherein,
Receiver Module, for receiving the 4th rf wave that wireless charger 201 is launched, exports rectification filtering module to;
In the embodiment of the present invention, as embodiment, Receiver Module comprises: resonance receives electric capacity and reception antenna (not shown), wherein,
It is in parallel with reception antenna that resonance receives electric capacity, and form resonant circuit, the resonance frequency of described resonant circuit is consistent with the resonance frequency of described resonant capacitance and transmitting antenna, receives the 4th rf wave for making reception antenna.
Rectification filtering module, for carrying out rectifying and wave-filtering to obtain direct current to the 4th rf wave of input, exports charging module to;
Charging module, for charging to battery according to the direct current of input.
As another embodiment, mobile electronic device 202 can further include: electric quantity monitoring module, network access module and communication module (not shown), wherein,
Electric quantity monitoring module, for monitoring battery electric quantity, if the battery electric quantity that monitoring obtains is lower than the power threshold pre-set, informing network access module; After monitoring battery charging complete, notice communication module;
Network access module, for reception notification, the wireless network access signal that search wireless charger 201 is broadcasted, if search wireless network access signal, according to searching for the wireless network access signal access wireless charger 201 obtained;
Communication module, for after access wireless charger 201, sends charge request to wireless charger 201; Receive the notice that electric quantity monitoring module sends, send charging complete information to wireless charger 201.
One of ordinary skill in the art will appreciate that all or part of flow process realized in above-described embodiment method, that the hardware that can carry out instruction relevant by computer program has come, described program can be stored in a computer read/write memory medium, this program, when performing, can comprise the flow process of the embodiment as above-mentioned each side method.Wherein, described storage medium can be magnetic disc, CD, read-only store-memory body (Read-Only Memory, ROM) or random store-memory body (RandomAccess Memory, RAM) etc.
The above; be only the specific embodiment of the present invention, but protection scope of the present invention is not limited thereto, is anyly familiar with those skilled in the art in the technical scope that the present invention discloses; the change that can expect easily or replacement, all should be encompassed within protection scope of the present invention.Therefore, protection scope of the present invention should be as the criterion with the protection range of claim.
Claims (17)
1. a wireless charger, is characterized in that, this wireless charger comprises: rectification module, modulation module, power amplifier module, every straight module and radiofrequency emitting module, wherein,
Rectification module, for from external power receptacle incoming transport electricity, obtains direct current after carrying out rectification and filtering, exports power amplifier module and modulation module respectively to;
Modulation module, for the direct current of input is modulated to the first rf wave, exports power amplifier module to by modulating the first rf wave obtained;
Power amplifier module, for utilizing the direct current of input, after carrying out power amplification, obtaining the second rf wave and exporting to every straight module the first rf wave of input;
Every straight module, for the second rf wave of input is carried out isolated DC electric treatment, obtain the 3rd rf wave, export radiofrequency emitting module to;
Radiofrequency emitting module, for carrying out resonance process to the 3rd rf wave of input, obtain the 4th rf wave, and the 4th rf wave obtained is launched, after receiving to make mobile electronic device the 4th rf wave launched, carry out rectification and filtering, obtain the direct current in order to charge to battery.
2. wireless charger according to claim 1, is characterized in that, described rectification module comprises: primary coil, secondary coil and current rectifying and wave filtering circuit, wherein,
Primary coil, for from external power receptacle incoming transport electricity, carries out elementary transformation;
Secondary coil, for from primary coil coupling alternating current, obtains the alternating current of step-down, inputs to current rectifying and wave filtering circuit;
Current rectifying and wave filtering circuit, for carrying out rectification and filtering to the alternating current of input, obtaining direct current, and exporting power amplifier module and modulation module respectively to.
3. wireless charger according to claim 1, is characterized in that, described modulation module comprises: control circuit for pulse-width modulation and radio-frequency signal generator, wherein,
Control circuit for pulse-width modulation, for the direct current according to input, generating the pulse-width modulation control signal for controlling the first rf wave frequency, exporting radio-frequency signal generator to;
Radio-frequency signal generator, for the pulse-width modulation control signal according to input, adjustment, according to the first rf wave of the direct current generation of input, exports power amplifier module to by modulating the first rf wave obtained.
4. wireless charger according to claim 1, is characterized in that, described radiofrequency emitting module comprises: resonant capacitance and transmitting antenna, wherein,
Resonant capacitance is in parallel with transmitting antenna, for forming resonant circuit under the control of the 3rd rf wave, and resonance process is carried out to the 3rd rf wave of input, obtain the 4th rf wave, and the 4th rf wave obtained is launched, after receiving to make mobile electronic device the 4th rf wave launched, carry out rectification and filtering, obtain the direct current in order to charge to battery.
5. the wireless charger according to any one of Claims 1-4, is characterized in that, comprises further:
Overcurrent protection module, for detecting the output current of power amplifier module, if detect the output current obtained to exceed the output current threshold value pre-set, notice modulation module reduces the first rf wave exported.
6. the wireless charger according to any one of Claims 1-4, is characterized in that, comprises further:
Overtemperature prote module, for detecting power tube temperature in power amplifier module, if detect the power tube temperature obtained to exceed the temperature threshold pre-set, the fan started in power amplifier module is lowered the temperature.
7. the wireless charger according to any one of Claims 1-4, is characterized in that, comprises further: rf wave adjustment module, transmitting power detection module, received power module and power conditioning module, wherein,
Rf wave adjustment module, for regulating the resonant parameter of radiofrequency emitting module, makes the 4th rf wave frequency change in 110-205KHz, and in the 4th rf wave launched, carries the information requiring that mobile electronic device reports received power;
Transmitting power detection module, for after rf wave adjustment module regulates the 4th rf wave frequency each time, detects the transmitting power of radiofrequency emitting module;
Received power module, for after rf wave adjustment module regulates the 4th rf wave frequency each time, receives the received power that mobile electronic device reports;
Power conditioning module, for after rf wave adjustment module regulates the 4th rf wave frequency each time, calculate the business of received power and transmitting power, obtain charge efficiency, the 4th rf wave frequency when acquisition charge efficiency is the highest, regulate the resonant parameter of radiofrequency emitting module, make in the 4th rf wave frequency of the 4th rf wave frequency stabilization when described charge efficiency is the highest.
8. the wireless charger according to any one of Claims 1-4, is characterized in that, comprises further:
Counting statistics module, for after the resonant parameter of rf wave adjustment module adjustment radiofrequency emitting module, the mobile electronic device that new access wireless charger charges is counted, when count value exceedes the count threshold pre-set, notice rf wave adjustment module performs the flow process of the resonant parameter regulating radiofrequency emitting module, and count value is reset.
9. the wireless charger according to any one of Claims 1-4, is characterized in that, comprises further:
Residue charge volume statistical module, for after the resonant parameter of rf wave adjustment module adjustment radiofrequency emitting module, detect that new access wireless charger carries out the mobile electronic device charged, that adds up the mobile electronic device of each charging does not complete charge volume, if statistics do not complete charge volume exceed pre-set do not complete charge volume threshold value, notice rf wave adjustment module performs the flow process of the resonant parameter regulating radiofrequency emitting module.
10. the wireless charger according to any one of Claims 1-4, is characterized in that, comprises further: counting statistics module and residue charge volume statistical module, wherein,
Counting statistics module, for after the resonant parameter of rf wave adjustment module adjustment radiofrequency emitting module, the mobile electronic device that new access wireless charger charges is counted, when count value exceedes the count threshold pre-set, notice residue charge volume statistical module, and count value is reset;
Residue charge volume statistical module, for reception notification, that adds up the mobile electronic device of each charging does not complete charge volume, if statistics do not complete charge volume exceed pre-set do not complete charge volume threshold value, notice rf wave adjustment module performs the flow process of the resonant parameter regulating radiofrequency emitting module.
11. wireless chargers according to any one of Claims 1-4, is characterized in that, comprise further: access module, wireless communication module and charge control module, wherein,
Access module, for broadcast wireless networks access signal, receives the wireless network access response signal that mobile electronic device returns, by described mobile electronic device access wireless charger;
Wireless communication module, for after mobile electronic device access wireless charger, receives the charge request from mobile electronic device, sends charge notification to charge control module; Receive the charging complete information from mobile electronic device, send charging termination notice to charge control module;
Charge control module, for receiving charge notification, the path of conducting rectification module and external power receptacle, to make rectification module incoming transport electricity; Reception charging termination notifies, disconnects the path of rectification module and external power receptacle.
12. wireless chargers according to any one of Claims 1-4, is characterized in that, comprise further:
Charge storage module, for at rectification module after external power receptacle incoming transport electricity, the direct current that rectification module exports is stored, to make wireless charger under the scene that there is not alternating current, the direct current stored is exported, to charge to the mobile electronic device of access wireless charger to power amplifier module and modulation module.
13. 1 kinds of wireless charging systems, is characterized in that, this wireless charging system comprises: wireless charger and mobile electronic device, wherein,
Wireless charger, for electric from external power receptacle incoming transport, direct current is obtained after carrying out rectification and filtering, the direct current obtained is modulated to the first rf wave, and utilize the direct current obtained, power amplification is carried out to the first rf wave of modulation, obtain the second rf wave, the second rf wave obtained is carried out isolated DC electric treatment, obtain the 3rd rf wave, resonance process is carried out to the 3rd rf wave obtained, obtains the 4th rf wave, and the 4th rf wave obtained is launched;
Mobile electronic device, for receiving the 4th rf wave that wireless charger is launched, carrying out rectification and filtering, obtains the direct current in order to charge to battery and charge to battery.
14. wireless charging systems according to claim 13, is characterized in that, described wireless charger comprises: rectification module, modulation module, power amplifier module, every straight module and radiofrequency emitting module, wherein,
Rectification module, for from external power receptacle incoming transport electricity, obtains direct current after carrying out rectification and filtering, exports power amplifier module and modulation module respectively to;
Modulation module, for the direct current of input is modulated to the first rf wave, exports power amplifier module to by modulating the first rf wave obtained;
Power amplifier module, for utilizing the direct current of input, after carrying out power amplification, obtaining the second rf wave and exporting to every straight module the first rf wave of input;
Every straight module, for the second rf wave of input is carried out isolated DC electric treatment, obtain the 3rd rf wave, export radiofrequency emitting module to;
Radiofrequency emitting module, for carrying out resonance process to the 3rd rf wave of input, obtain the 4th rf wave, and the 4th rf wave obtained is launched, after receiving to make mobile electronic device the 4th rf wave launched, carry out rectification and filtering, obtain the direct current in order to charge to battery.
15. wireless charging systems according to claim 13 or 14, it is characterized in that, described mobile electronic device comprises: Receiver Module, rectification filtering module and charging module, wherein,
Receiver Module, for receiving the 4th rf wave that wireless charger is launched, exports rectification filtering module to;
Rectification filtering module, for carrying out rectifying and wave-filtering to obtain direct current to the 4th rf wave of input, exports charging module to;
Charging module, for charging to battery according to the direct current of input.
16. wireless charging systems according to claim 15, is characterized in that, described Receiver Module comprises: resonance receives electric capacity and reception antenna, wherein,
It is in parallel with reception antenna that resonance receives electric capacity, and form resonant circuit, the resonance frequency of described resonant circuit is consistent with the resonance frequency of described resonant capacitance and transmitting antenna, receives the 4th rf wave for making reception antenna.
17. wireless charging systems according to claim 15, is characterized in that, comprise further: electric quantity monitoring module, network access module and communication module, wherein,
Electric quantity monitoring module, for monitoring battery electric quantity, if the battery electric quantity that monitoring obtains is lower than the power threshold pre-set, informing network access module; After monitoring battery charging complete, notice communication module;
Network access module, for reception notification, the wireless network access signal of search wireless charger broadcast, if search wireless network access signal, according to searching for the wireless network access signal access wireless charger obtained;
Communication module, for after access wireless charger, sends charge request to wireless charger; Receive the notice that electric quantity monitoring module sends, send charging complete information to wireless charger.
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