CN107465242A - A kind of wireless charging receiver and wireless charging system - Google Patents

A kind of wireless charging receiver and wireless charging system Download PDF

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Publication number
CN107465242A
CN107465242A CN201710784681.9A CN201710784681A CN107465242A CN 107465242 A CN107465242 A CN 107465242A CN 201710784681 A CN201710784681 A CN 201710784681A CN 107465242 A CN107465242 A CN 107465242A
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CN
China
Prior art keywords
signal
circuit
charging
control
voltage
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN201710784681.9A
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Chinese (zh)
Inventor
倪漫利
李新
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Shenzhen Tinno Mobile Technology Co Ltd
Shenzhen Tinno Wireless Technology Co Ltd
Original Assignee
Shenzhen Tinno Mobile Technology Co Ltd
Shenzhen Tinno Wireless Technology Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Shenzhen Tinno Mobile Technology Co Ltd, Shenzhen Tinno Wireless Technology Co Ltd filed Critical Shenzhen Tinno Mobile Technology Co Ltd
Priority to CN201710784681.9A priority Critical patent/CN107465242A/en
Publication of CN107465242A publication Critical patent/CN107465242A/en
Pending legal-status Critical Current

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Classifications

    • H02J7/025
    • HELECTRICITY
    • H02GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02JCIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J7/00Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
    • H02J7/02Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries for charging batteries from ac mains by converters
    • H02J7/04Regulation of charging current or voltage

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  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Charge And Discharge Circuits For Batteries Or The Like (AREA)

Abstract

The invention discloses a kind of wireless charging receiver and wireless charging system.Wherein, wireless charging receiver includes:First electromagnetic switching circuit, the electromagnetic signal for wireless charging emitter to be launched are converted into ac signal;First control circuit, the charging voltage current desired for detecting charging object, and export the first control instruction for indicating current desired charging voltage;AC DC change-over circuit, including be connected with electromagnetic conversion circuit first input end, be connected with first control circuit the second input and the output end for being connected with charging object, for responding the first control instruction of first control circuit output, the ac signal that first electromagnetic switching circuit exports is converted into magnitude of voltage and is equal to the DC signal of current desired charging voltage, and exports DC signal.By the above-mentioned means, the present invention can reduce energy conversion loss, charge efficiency can be improved.

Description

A kind of wireless charging receiver and wireless charging system
Technical field
The present invention relates to wireless charging control technology field, more particularly to a kind of wireless charging receiver and wireless charging Electric system.
Background technology
With the continuous development of electronic technology, different mobile terminals has to rely on matched in traditional charging modes Charging wire could be charged, the charge requirement of people can not be met.And the use that wireless charging technology has due to it Simply, conveniently, it is durable the features such as, can be achieved a wireless charger different mobile terminals is charged, gradually substitution Traditional charging technique.
When present wireless charger is carrying out wireless charging, the receiving terminal of wireless charger is needed the friendship received Stream electric signal is converted to DC signal, then the DC signal is converted to again the straight letter of charging object required voltage Number, cause most of energy to be lost in the form of heat energy so that charge efficiency is low, can not meet need of the user to charge efficiency Ask, satisfaction of users is poor, therefore, it is necessary to propose a kind of new wireless charger to solve above-mentioned technical problem.
The content of the invention
, can the present invention solves the technical problem of a kind of wireless charging receiver and wireless charging system is provided Energy conversion loss is reduced, charge efficiency can be improved.
In order to solve the above technical problems, one aspect of the present invention is:A kind of wireless charging is provided and receives dress Put, including:First electromagnetic switching circuit, the electromagnetic signal for wireless charging emitter to be launched are converted into exchanging telecommunications Number;First control circuit, the charging voltage current desired for detecting charging object, and export for indicating current desired charging First control instruction of voltage;AC-DC change-over circuit, including be connected with electromagnetic conversion circuit first input end, with the One control circuit connects the second input and the output end for being connected with charging object, defeated for responding first control circuit The first control instruction gone out, the ac signal that the first electromagnetic switching circuit exports is converted into magnitude of voltage and is equal to current desired fill The DC signal of piezoelectric voltage, and export DC signal.
In order to solve the above technical problems, another technical solution used in the present invention is:A kind of wireless charging system is provided, Including:Wireless charging emitter and above-mentioned wireless charging receiver, wherein, wireless charging dispensing device is used for will exchange Electric signal is converted into electromagnetic signal;Wireless charging receiver is used to convert electromagnetic signal into and the object that charges is current desired The DC signal of charging voltage matching, and DC signal is exported to charging object.
The beneficial effects of the invention are as follows:It is different from the situation of prior art, in wireless charging receiver of the invention, The electromagnetic signal that wireless charging emitter is launched is converted into ac signal by one electromagnetic switching circuit;First control circuit is examined The current desired charging voltage of charging object is surveyed, and exports the first control instruction for indicating current desired charging voltage;Hand over Stream-DC converting circuit is used for the first control instruction for responding first control circuit output, and the first electromagnetic switching circuit is exported Ac signal be converted into the DC signal that magnitude of voltage is equal to current desired charging voltage, and export DC signal, make First control circuit is obtained can directly to eliminate from alternating current with the DC voltage of control input charging object and be converted to direct current Electricity, then the process of direct current is converted to from direct current, therefore reduce the loss of energy conversion in charging process, improve charging Efficiency, and also reduce the radiating cost of charging equipment.
Brief description of the drawings
Fig. 1 is a kind of structural representation of the embodiment of wireless charging receiver one of the present invention;
Fig. 2 is a kind of structural representation of another embodiment of wireless charging receiver of the present invention;
Fig. 3 is a kind of embodiment circuit diagram of wireless charging receiver one of the present invention;
Fig. 4 is a kind of structural representation of the embodiment of wireless charging system one of the present invention.
Embodiment
Referring to Fig. 1, Fig. 1 is a kind of structural representation of the embodiment of wireless charging receiver one of the present invention.Such as Fig. 1 Shown, the wireless charging receiver 10 in present embodiment includes:First electromagnetic switching circuit 11, first control circuit 12, AC-DC change-over circuit 13 and charging object 14.Wherein, the first input end connection the of AC-DC change-over circuit 13 One electromagnetic switching circuit 11, the second input connection first control circuit 12, input connection charging object 14.In addition, first Control circuit 12 also includes a test side, the test side connection charging object 14 of first control circuit 12.
Specifically, the electromagnetic signal that the first electromagnetic switching circuit 11 is used to launch wireless charging emitter, which is changed, to strike a bargain Flow electric signal.
First control circuit 12 is used for the current desired charging voltage for detecting charging object 14, and exports for indicating to work as First control instruction of charging voltage needed for preceding.
AC-DC change-over circuit 13 is used for the first control instruction for responding the output of first control circuit 12, by the first electricity The ac signal that magnetic change-over circuit 11 exports is converted into the DC signal that magnitude of voltage is equal to current desired charging voltage, and defeated Go out DC signal.Specifically, the first control instruction refers to the instruction that needs are charged, and required for the object 14 that charges Specific charging voltage value.
Further, first control circuit 12 is additionally operable to reach threshold voltage in the current voltage for detecting charging object 14 When, export the second control instruction.AC-DC change-over circuit 13 is used for when receiving the second control instruction, stops output.Tool Body, the second control instruction refers to that charging object 14 has been filled with electricity, stops the instruction being charged.
Alternately, first control circuit 12 is additionally operable to reach threshold voltage in the current voltage for detecting charging object 14 When, the first electromagnetic switching circuit 11 of control disconnects with AC-DC change-over circuit 13.
Specifically, the first electromagnetic switching circuit 11 is receiving coil, is entered with the transmitting coil in wireless charging emitter Row coupling, for receiving ac signal.
Specifically, charging object 14 can be that mobile phone, tablet personal computer, notebook computer, palm PC, mobile Internet are set Standby (MID, Mobile Internet Device), wearable device (intelligent watch, Intelligent bracelet) or other can be used for charging Terminal device.
In present embodiment, the electromagnetic signal that the first electromagnetic switching circuit launches wireless charging emitter changes conclusion of the business Flow electric signal;The current desired charging voltage of first control circuit detection charging object, and export for indicating current desired fill First control instruction of piezoelectric voltage;AC-DC change-over circuit is used for the first control instruction for responding first control circuit output, The ac signal that first electromagnetic switching circuit exports is converted into direct current telecommunications of the magnitude of voltage equal to current desired charging voltage Number, and exporting DC signal so that first control circuit can directly be saved with the DC voltage of control input charging object From alternating current direct current is converted to, then the process of direct current is converted to from direct current, therefore reduce energy in charging process The loss of conversion, charge efficiency is improved, and also reduce the radiating cost of charging equipment.
Referring to Fig. 2, Fig. 2 is a kind of structural representation of another embodiment of wireless charging receiver of the present invention.Such as Shown in Fig. 2, the wireless charging receiver 20 in present embodiment includes:First electromagnetic switching circuit 21, AC-DC conversion Circuit 22, first control circuit 23, charging object 24.Wherein, AC-DC change-over circuit 22 includes rectification module 221 and electricity Press adjusting module 222.Specifically, receiving coil 21 connects rectification module 221, and rectification module 221 connects voltage regulator module 222, another input connection first control circuit 23 of voltage regulator module 222, the output end of voltage regulator module 222 connection is filled Electric object 24, the test side connection charging object 24 of first control circuit 23.
In the present embodiment, the first electromagnetic switching circuit 21 is specifically receiving coil.
Receiving coil 21 is used to be coupled according to electromagnetic induction, and the electromagnetic signal received is converted into ac signal.
Rectification module 221 is used to the ac signal that receiving coil 21 exports being converted into DC signal.
The control instruction that voltage regulator module 222 is used to be exported according to first control circuit 23 adjusts DC signal, and DC signal extremely charging object 24 after output adjustment.
First control circuit 23 is used for the charging voltage for detecting charging object 24, and in the charging for detecting charging object 24 When voltage tends to voltage threshold, send control instruction to VRM Voltage Regulator Module 222, with cause VRM Voltage Regulator Module 222 stop to Charge the input voltage of object 24.
In a wherein embodiment specifically, as shown in figure 3, Fig. 3, which is a kind of wireless charging of the present invention, receives dress Put an embodiment circuit diagram.In figure 3, first control circuit 23 specifically includes the first control chip 31 of interconnection With light emitting diode 32, the first control chip 31 is used for the current power state for obtaining charging object 24, and according to current electric quantity State control light emitting diode 32 is in luminous situation accordingly.Voltage regulator module 222 specifically include the second control chip 33, Photodiode 34, triode 35 and voltage adjuster 36, wherein, the input of the second control chip 33 connects photosensitive two pole The control terminal of pipe 34, output end connecting triode 35, the input connection rectification module 221 and triode 35 of voltage adjuster 36 Input, output end be used for connect charging object 25, the output head grounding of triode 35;Second control chip 33 is used to receive The electric signal according to caused by the luminous situation of light emitting diode 32 of photodiode 34, and triode 35 is controlled according to electric signal ON time;Voltage adjuster 36 adjusts the voltage of output according to the ON time of triode 35.Specifically, light emitting diode 32 In corresponding luminous situation be light emitting diode 32 send the light pulse of predetermined number or light emitting diode 32 send it is default Intensity of illumination.
In addition, light emitting diode 32 connects the pin VDD of the first control chip 31, the first control chip 31 is also connected with voltage Adjuster 36 and charging object 38, photodiode 34 connect the FB of the second control chip 33, and the second control chip 33 is also connected with Voltage adjuster 36 and rectification circuit 37.Specifically, the pin QP/QN of the first control chip 31 is used to obtain charging object 38 Current power state, and control light emitting diode 32 to be in luminous situation accordingly according to current power state.Second control core Piece 33 is used to receive the electric signal according to caused by the luminous situation of light emitting diode 32 of photodiode 34, and according to electric signal control The ON time of triode 35 processed;Voltage adjuster 36 adjusts the voltage of output according to the ON time of triode 35.For example, hair The charging object 38 that optical diode 32 detects according to the first control chip 31 needs the signal to be charged, within 1s time 10 light pulses are sent, after photodiode 34 receives 10 light pulses that light emitting diode 32 is sent, the second control chip 33 signals received according to photodiode 34, control triode 35 adjust its ON time so that voltage adjuster 36 can Corresponding voltage is inputted to the object 38 that charges.
Specifically, light emitting diode 32 sends the light pulse of predetermined number or light emitting diode 32 sends default illumination Intensity, the signal that photodiode 34 is sent according to light emitting diode 32 feed back corresponding signal to the second control chip 33, made The second control chip 33 change the control terminal of triode 35 signal account for wide ratio so that voltage adjuster 36 export it is different Direct current extremely charging object 38.
In addition, the first control chip 31 is additionally operable to receive the signal of the controller transmitting of wireless charging emitter, go forward side by side Row feedback, to cause wireless charging emitter transmission of electromagnetic signals to the receiving coil of wireless charging receiver.
In present embodiment, the electromagnetic signal that the first electromagnetic switching circuit launches wireless charging emitter changes conclusion of the business Flow electric signal;The current desired charging voltage of first control circuit detection charging object, and export for indicating current desired fill First control instruction of piezoelectric voltage;AC-DC change-over circuit is used for the first control instruction for responding first control circuit output, The ac signal that first electromagnetic switching circuit exports is converted into direct current telecommunications of the magnitude of voltage equal to current desired charging voltage Number, and exporting DC signal so that first control circuit can directly be saved with the DC voltage of control input charging object From alternating current direct current is converted to, then the process of direct current is converted to from direct current, therefore reduce energy in charging process The loss of conversion, charge efficiency is improved, and also reduce the radiating cost of charging equipment.
Referring to Fig. 4, Fig. 4 is a kind of structural representation of the embodiment of wireless charging system one of the present invention.Such as Fig. 4 institutes Show, present embodiment includes wireless charging dispensing device 40 and wireless charging receiver 10, the nothing in present embodiment Line charging receiver 10 is the wireless charging receiver in above-mentioned embodiment.Wherein, wireless charging dispensing device 40 is used In ac signal is converted into electromagnetic signal;Wireless charging receiver 10 is used to convert electromagnetic signal into and the object that charges The DC signal of 14 current desired charging voltage matchings, and DC signal is exported to charging object 14.
Wherein, wireless charging dispensing device 40 include DC-ac conversion circuit 41, the second electromagnetic switching circuit 42 and Second control circuit 43.Specifically, the second electromagnetic switching circuit 42 connects the control of DC-ac conversion circuit 41 and second respectively Circuit 43.Specifically, second control circuit 43 is used to carry out in real time with the first control circuit 12 of wireless charging receiver 10 Communication, to cause the transmission of electromagnetic signals of the second electromagnetic switching circuit 42.
Specifically, the second electromagnetic switching circuit 42 is transmitting coil, and transmitting coil is used to turn the ac signal of input Change electromagnetic signal into.
In addition, wireless charging dispensing device 40 also includes detection circuit 44, detection circuit 44 connects the second electromagnetism and turned respectively Change circuit 42 and second control circuit 43.Detection circuit 44, which is used to detect and monitor electric current in the second electromagnetic switching circuit 42, to be believed Number, the temperature of the coupling coil of the voltage in DC-ac conversion circuit 41, the second electromagnetic switching circuit 42.Second electromagnetism turns The size for changing the current value of the coupling coil of circuit 42 directly affects the size of transimission power, monitors the effect of the signal and is:One It is to be used for when standby judging whether emission end surface has object, it is small when the signal value ratio does not have an object when having object, second, In power transmission process, the size of the size reflection current transmission power of the signal value, is that the input of second control circuit 43 becomes One of amount, the result of decision of second control circuit 43 can be influenceed.Voltage in DC-ac conversion circuit 41 is crossed conference and caused The damage of device in circuit, it is too small and normal power transmission can be influenceed, therefore to voltage in DC-ac conversion circuit 41 Detection is primarily to ensure the normal work of system and the safety of system device.The coupling coil of second electromagnetic switching circuit 42 Because its own has certain resistance, thus can be generated heat when the electric current that run duration is long and flows through is bigger, and coupling The temperature of zygonema circle is too high not only to produce unsafe factor, can also influence Consumer's Experience, it is therefore desirable to monitor coupling coil Problem, and when temperature exceedes threshold value, the instruction of pause transmission of electromagnetic signals is sent to second control circuit 43.
Wireless charging system in present embodiment includes wireless charging dispensing device and wireless charging receiver, its In, wireless charging receiver includes:First electromagnetic switching circuit, for the electromagnetic signal for launching wireless charging emitter It is converted into ac signal;First control circuit, the charging voltage current desired for detecting charging object, and export for referring to Show the first control instruction of current desired charging voltage;AC-DC change-over circuit, for responding first control circuit output First control instruction, the ac signal that the first electromagnetic switching circuit exports is converted into magnitude of voltage and is equal to current desired charging electricity The DC signal of pressure, and export DC signal so that first control circuit directly can be with the straight of control input charging object Piezoelectric voltage is flowed, eliminates from alternating current and is converted to direct current, then the process of direct current is converted to from direct current, therefore reduces and fills The loss of energy conversion in electric process, charge efficiency is improved, and also reduce the radiating cost of charging equipment.
Embodiments of the present invention are the foregoing is only, are not intended to limit the scope of the invention, it is every to utilize this The equivalent structure or equivalent flow conversion that description of the invention and accompanying drawing content are made, or directly or indirectly it is used in other correlations Technical field, it is included within the scope of the present invention.

Claims (10)

  1. A kind of 1. wireless charging receiver, it is characterised in that including:
    First electromagnetic switching circuit, the electromagnetic signal for wireless charging emitter to be launched are converted into ac signal;
    First control circuit, the charging voltage current desired for detecting charging object, and export for indicating the current institute Need the first control instruction of charging voltage;
    AC-DC change-over circuit, including the first input end being connected with the electromagnetic conversion circuit and the described first control electricity Road connects the second input and the output end for being connected with the charging object, defeated for responding the first control circuit The first control instruction gone out, the ac signal that first electromagnetic switching circuit exports is converted into magnitude of voltage and is equal to described work as The DC signal of charging voltage needed for preceding, and export the DC signal.
  2. 2. device according to claim 1, it is characterised in that
    The first control circuit is additionally operable to when the current voltage for detecting the charging object reaches threshold voltage, output the Two control instructions;
    The AC-DC change-over circuit is used for when receiving second control instruction, stops output.
  3. 3. device according to claim 1, it is characterised in that
    The first control circuit is additionally operable to, when the current voltage for detecting the charging object reaches threshold voltage, control institute The first electromagnetic switching circuit is stated to disconnect with the AC-DC change-over circuit.
  4. 4. device according to claim 1, it is characterised in that
    First electromagnetic switching circuit includes receiving coil, and the receiving coil is used to be coupled according to electromagnetic induction, will received To electromagnetic signal be converted into ac signal.
  5. 5. device according to claim 1, it is characterised in that the AC-DC change-over circuit includes:
    Rectification module, first electromagnetic switching circuit is connected to, for the exchange for exporting first electromagnetic switching circuit Electric signal is converted into DC signal;
    Voltage regulator module, the rectification module, the first control circuit are connected to, for according to the described first control The control instruction of circuit output adjusts the DC signal, and exports the DC signal after the adjustment.
  6. 6. device according to claim 1, it is characterised in that
    The first control circuit includes the first control chip and light emitting diode being connected with each other, and first control chip is used It is in the current power state for obtaining the charging object, and according to the current power state control light emitting diode Luminous situation accordingly;
    The voltage regulator module includes photodiode, the second control chip, triode and voltage adjuster, wherein, institute The input for stating the second control chip connects the photodiode, output end connects the control terminal of the triode, the electricity The input of pressure adjuster connects the rectification module and the input, output end of the triode is used to connect the charging pair As the output head grounding of the triode;Second control chip is used to receive the photodiode according to described luminous Electric signal caused by the luminous situation of diode, and the triode ON time is controlled according to the electric signal;The voltage Adjuster adjusts the voltage of output according to the ON time of the triode.
  7. 7. device according to claim 6, it is characterised in that
    The light emitting diode be in corresponding luminous situation be the light emitting diode send predetermined number light pulse or The light emitting diode sends default intensity of illumination.
  8. A kind of 8. wireless charging system, it is characterised in that including:
    Wireless charging emitter and the wireless charging receiver as described in any one of claim 1 to 7, wherein, the nothing Micro USB electricity dispensing device is used to ac signal being converted into electromagnetic signal;The wireless charging receiver is used for the electricity Magnetic signal is converted into the DC signal that the charging voltage current desired with charging object matches, and the DC signal is defeated Go out to the charging object.
  9. 9. system according to claim 8, it is characterised in that
    The wireless charging emitter includes DC-ac conversion circuit, the second electromagnetic switching circuit and second control circuit, The DC-ac conversion circuit, the second control circuit connect second electromagnetic switching circuit respectively, wherein:
    The second control circuit is used to carry out real-time Communication for Power with the first control circuit of the wireless charging receiver, so that Obtain the second electromagnetic switching circuit transmission of electromagnetic signals.
  10. 10. system according to claim 8, it is characterised in that
    Second electromagnetic switching circuit of the wireless charging emitter includes transmitting coil, and the transmitting coil is used for will input Ac signal be converted into electromagnetic signal.
CN201710784681.9A 2017-09-01 2017-09-01 A kind of wireless charging receiver and wireless charging system Pending CN107465242A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201710784681.9A CN107465242A (en) 2017-09-01 2017-09-01 A kind of wireless charging receiver and wireless charging system

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Application Number Priority Date Filing Date Title
CN201710784681.9A CN107465242A (en) 2017-09-01 2017-09-01 A kind of wireless charging receiver and wireless charging system

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CN111246079A (en) * 2019-03-21 2020-06-05 泰州市赛得机电设备有限公司 Intelligent signal adjusting method

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Application publication date: 20171212