CN109450041A - A kind of wireless charging device of multi gear position - Google Patents

A kind of wireless charging device of multi gear position Download PDF

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Publication number
CN109450041A
CN109450041A CN201811535950.9A CN201811535950A CN109450041A CN 109450041 A CN109450041 A CN 109450041A CN 201811535950 A CN201811535950 A CN 201811535950A CN 109450041 A CN109450041 A CN 109450041A
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CN
China
Prior art keywords
unit
signal
selecting unit
wireless charging
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
CN201811535950.9A
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Chinese (zh)
Inventor
徐自强
马云飞
吴孟强
杨娟
李湜
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.)
Baoshan Yalongxin Investment Management Co ltd
University of Electronic Science and Technology of China
Original Assignee
Baoshan Yalongxin Investment Management Co ltd
University of Electronic Science and Technology of China
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.)
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Publication date
Application filed by Baoshan Yalongxin Investment Management Co ltd, University of Electronic Science and Technology of China filed Critical Baoshan Yalongxin Investment Management Co ltd
Priority to CN201811535950.9A priority Critical patent/CN109450041A/en
Publication of CN109450041A publication Critical patent/CN109450041A/en
Pending legal-status Critical Current

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    • H02J7/025

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  • Charge And Discharge Circuits For Batteries Or The Like (AREA)

Abstract

A kind of wireless charging device of multi gear position, belongs to wireless charging field.Voltage selecting unit handles DC power supply, controls switching device in voltage selecting unit so that voltage selecting unit be made to generate different DC voltages by control signal driving unit;DC voltage is changed into high frequency ac signal by high-frequency inversion unit, then is transmitted to primary coil after power amplification unit amplifies;Secondary coil obtains the AC signal of primary coil by electromagnetic induction, after rectified filter unit is changed into direct current signal, control is adjusted to the output electric current of direct current signal in charged current selecting unit again, controls switching device in charging current selecting unit by control signal driving unit so that corresponding resistance access circuit is exported different current signals as the output signal of wireless charging device;The different electric currents that the different DC voltages and charging current selecting unit generated using voltage selecting unit are generated are combined, to provide a variety of charging gears.

Description

A kind of wireless charging device of multi gear position
Technical field
The invention belongs to wireless charging fields, and in particular to a kind of wireless charging device of multi gear position.
Background technique
In recent years, with the continuous development of science and technology, various terminal equipment emerges one after another.Traditional charging modes are different Terminal device relies on matched charging cable and charges, and this wired charging method is cumbersome, is unable to satisfy the modern times Life requirement, wireless charging device come into being.
Wireless charging refers to the Wireless charging coil that wireless charging device is received by the Wireless charging coil of terminal device The electromagnetic wave launched makes terminal device obtain electric energy, to complete charging using the inductive energy transmitting of low-frequency electromagnetic wave Process.Existing wireless charging device only has a kind of charging modes of power mostly, i.e. the charging rate of charger is non-adjustable, nothing Method meets the power demand of actual life.And the existing wireless charging device for being capable of providing a variety of charge modes often circuit knot Structure and control logic are complex, and the gearing regime provided is limited.
Summary of the invention
It is non-adjustable for the wireless charging device charging rate of the above-mentioned single charging modes of tradition, and it is capable of providing a variety of fill The limited problem of the gear that the wireless charging device circuit of power mode is complicated, power consumption is high and provides, the present invention propose a kind of multi gear The wireless charging device of position, circuit structure is simple easily controllable and can provide charging gear as much as possible.
To achieve the above object, the technical solution of the present invention is as follows:
A kind of wireless charging device of multi gear position, including voltage selecting unit, high-frequency inversion unit, power amplification unit, Primary coil, secondary coil, rectification filtering unit, charging current selecting unit and control signal driving unit;
The input terminal of the voltage selecting unit connects DC power supply, and output end connects the defeated of the high-frequency inversion unit Enter end, the voltage selecting unit includes multiple concatenated decompression devices, each decompression device switching device in parallel;
The high-frequency inversion unit is for handling the output signal of the voltage selecting unit for high frequency ac signal;
The power amplification unit is for being transmitted to the primary coil after amplifying the high frequency ac signal;
The secondary coil obtains the AC signal of the primary coil by electromagnetic induction;
The rectification filtering unit is for being changed into direct current signal for the AC signal that the secondary coil obtains and carrying out Output is to the charging current selecting unit after filtering;
The charging current selecting unit includes the resistance of multiple parallel connections, and the resistance in each parallel branch is connected one and opened Close device;Output signal of the electric current of the charging current selecting unit output as the wireless charging device;
The control signal driving unit controls corresponding switching device according to different charging gears and is switched on or off.
Specifically, the wireless charging device further includes Power Management Unit, it is described when power supply signal is AC signal Power Management Unit is for being converted to DC power supply for AC power source and being supplied to the voltage selecting unit.
Specifically, the wireless charging device further includes charge protection unit, the charge protection Unit selection model The chip of SL1053 is monitored and protects to the output signal of the wireless charging device.
The course of work of the invention are as follows:
Voltage selecting unit handles DC power supply, is controlled in voltage selecting unit by control signal driving unit Switching device is switched on and off, so that corresponding decompression device access circuit is generated different DC voltages by control;High frequency DC voltage is changed into high frequency ac signal by inversion unit, then is transmitted to primary coil after power amplification unit amplifies;It is secondary Grade coil obtains the AC signal of primary coil by electromagnetic induction, after rectified filter unit is changed into direct current signal, then passes through Control is adjusted to the output electric current of direct current signal in charging current selecting unit, passes through control signal driving unit control charging Switching device is switched on and off in current selecting unit, so that corresponding resistance access circuit is exported different electric currents by control Output signal of the signal as wireless charging device.Different DC voltages and the charging current choosing generated according to voltage selecting unit The various combination for selecting the different current signals of unit generation is capable of providing different charging gears, when switching different charging gears by It controls corresponding in signal driving unit charging gear control voltage selecting unit and charging current selecting unit as needed Switching device is realized.
The invention has the benefit that a kind of wireless charging device of multi gear position provided by the invention, is emitted by changing The charging current levels of the voltage input grade at end and receiving end change the charge power of charging unit, solve wireless at present The single problem of charging unit charging modes;It can be provided according to the various combination of voltage selecting unit and charging current selecting unit Charging in many ways meets practical application request, increases alternative and flexibility;And circuit structure is simply easily achieved.
Detailed description of the invention
Fig. 1 is the overall structure diagram of wireless charging system work.
Fig. 2 is a kind of structural schematic diagram of wireless charging device of multi gear position provided by the invention in embodiment.
Fig. 3 is a kind of structural representation of voltage selecting unit in a kind of wireless charging device of multi gear position provided by the invention Figure.
Fig. 4 is a kind of structure of charging current selecting unit in a kind of wireless charging device of multi gear position provided by the invention Schematic diagram.
Specific embodiment
With reference to the accompanying drawings and examples, technical solution of the present invention is described in detail.
The present invention proposes a kind of wireless charging device of multi gear position, as shown in Fig. 2, inverse including voltage selecting unit, high frequency Become unit, power amplification unit, primary coil, secondary coil, rectification filtering unit, charging current selecting unit and control signal Driving unit;It further include Power Management Unit in some embodiments, when power supply signal is AC signal, Power Management Unit is used It handles as DC power supply in by AC power source conversion Transformer Rectifier and is supplied to voltage selecting unit;Power supply signal in the present embodiment It for 220V alternating current, selects full-bridge rectification chip that 220V alternating current is carried out AC-DC transformation, then is dropped for the first time with decompression chip Pressure is supplied to voltage selecting unit.
The input terminal of voltage selecting unit connects DC power supply, and output end connects the input terminal of high-frequency inversion unit, uses In the multiple and different DC voltage of generation.Voltage selecting unit includes M concatenated decompression devices, each decompression device parallel connection one A switching device, M are positive integer, as shown in figure 3, voltage selecting unit includes 2 concatenated decompression devices in the present embodiment, when The decompression ability of 2 decompression devices is not capable of providing 4 kinds of different DC voltages simultaneously, receives control signal by MOSFET and drives The signal condition of moving cell controls whether that the output voltage to Power Management Unit carries out decompression processing, when control signal driving When two MOSFET of unit control are opened, when not carrying out decompression processing to DC voltage, voltage selecting unit generates the first DC voltage;When controlling signal driving unit control and only having the MOSFET on the left side to turn off, DC voltage is depressured by the left side Device carries out decompression processing, and voltage selecting unit generates second of DC voltage;When control signal driving unit control only has the right side When the MOSFET shutdown on side, the decompression device that DC voltage passes through the right is subjected to decompression processing, voltage selecting unit generates the Three kinds of DC voltages;When control signal driving unit, which controls two MOSFET, to be turned off, by DC voltage by two decompressions Device carries out decompression processing, and voltage selecting unit generates the 4th kind of DC voltage;By the control to each switching device to Control is input to the voltage of high-frequency inversion unit and power amplification unit, realizes the regulation of primary coil output power, finally changes Become charge power.With should 2 decompression devices decompression abilities it is identical when, only connect the decompression device on the left side and only connect on the right of Decompression device is identical to the antihypertensive effect of DC power supply, therefore can generate 3 kinds of different DC voltages.It is depressured in some embodiments For device using lm7812, lm7805 etc., switching device is that MOSFET uses IRF540.
High-frequency inversion unit is for handling the output signal of voltage selecting unit for high frequency ac signal;Some embodiments It is middle that high frequency ac signal is become to direct current signal progress DC-AC inversion using 555 and peripheral circuit.
Power amplification unit is for being transmitted to primary coil after amplifying high frequency ac signal;It is sharp in some embodiments The small signal of high-frequency ac is amplified with triode and peripheral circuit.
Primary coil is used to launch signal, such as can use the parallel resonance that capacitor and primary coil are formed and return Road is launched by signal.
Secondary coil obtains the AC signal that primary coil issues by electromagnetic induction.
Rectification filtering unit is for being changed into direct current signal for the AC signal that secondary coil obtains and being filtered rear defeated Charging current selecting unit is given out;AC-DC transformation is carried out to signal using rectifier bridge in some embodiments, recycles capacitor to letter It number is filtered.
Charging current selecting unit includes the resistance of N number of parallel connection, resistance one derailing switch of series connection in each parallel branch Part, N are positive integer;As shown in figure 4, charging current selecting unit includes 2 resistance in parallel in the present embodiment, when 2 resistance Resistance value is not capable of providing 4 kinds of different DC currents simultaneously, and the signal condition of control signal driving unit is received by MOSFET Come control whether to rectification filtering unit export signal carry out control change charging current size, realize the tune of charge power Control.When control signal driving unit, which controls two MOSFET, to be turned off, DC current is not shunted, charging current selection The output signal of unit output rectification filter unit, as the first current class;When control signal driving unit control only has When the MOSFET on the left side is opened, DC current is shunted by the resistance on the left side, the output of charging current selecting unit is passed through Electric current after shunting, as second of current class;It, will be straight when the MOSFET for controlling signal driving unit control the right is opened The resistance that galvanic electricity stream passes through the right is shunted, electric current of the charging current selecting unit output after shunting, as the third Current class;When control signal driving unit, which controls two MOSFET, opens, DC current is carried out by two resistance Decompression processing, charging current selecting unit generate the 4th kind of current class;By the control to each switching device to control The size of charging current realizes the regulation of charge power.With should two resistances it is identical when be capable of providing 3 kinds it is different straight Galvanic electricity stream;Select resistance for 100 Ω in some embodiments, metal-oxide-semiconductor uses IRF540.
Output signal of the electric current of charging current selecting unit output as wireless charging device;It is wireless in some embodiments Charging unit further includes charge protection unit, and charge protection unit uses existing charge protection chip, selects in the present embodiment The chip of model SL1053 is monitored the charged state of wireless charging device, protects, final output signal.
Control signal driving unit controls corresponding switching device according to different charging gears and is switched on or off, to mention For multiple charging gears, control signal driving unit uses IR2110 driving chip in the present embodiment, is mentioned by centralized control unit For controlling signal, centralized control unit selects the single-chip microcontroller of model STC89C52.
The present invention changes the voltage input grade of transmitting terminal by voltage selecting unit, to change primary coil output Power;The size for changing charging current using charging current selecting unit, to change the charging current levels of receiving end, finally Change the charge power of charging unit.If voltage selecting unit includes M concatenated decompression devices, when each decompression device is depressured Ability is not capable of providing 2 simultaneouslyMThe different DC voltage of kind can generate M+1 kind when each decompression device decompression ability is identical Different DC voltages;If charging current selecting unit includes the resistance of N number of parallel connection, can be mentioned when each resistance difference For 2NKind different DC currents, when each resistance is identical while being capable of providing the different DC current of N+1 kind, below with Voltage selecting unit include 1 concatenated decompression device and charging current selecting unit include for 1 resistance in parallel in detail Illustrate the charging modes in the present embodiment.
A kind of wireless charging device of multi gear position provided in this embodiment is selected by voltage selecting unit and charging current The regulation of unit obtains four kinds of output powers, and then realizes the charging modes of four kinds of different capacities, specifically:
This wireless charging device provides four kinds of charging modes.It is divided into level-one, second level, three-level, level Four charging gear.
When in level-one charging gear, emit signal, control to control signal driving unit using centralized control unit Signal driving unit controls the grid voltage between source electrodes U of the MOSFET in voltage selecting unitGS>UGS(th), and drain-source voltage across poles UDS>0;The grid voltage between source electrodes U of the MOSFET in charging current selecting unit is controlled simultaneouslyGS< 0, high voltage letter is obtained with this Number and high current output.
When in second level charging gear, emit signal, control to control signal driving unit using centralized control unit Signal driving unit controls the grid voltage between source electrodes U of the MOSFET in voltage selecting unitGS>UGS(th), and drain-source voltage across poles UDS>0;The grid voltage between source electrodes U of the MOSFET in charging current selecting unit is controlled simultaneouslyGS>UGS(th), and drain-source voltage across poles UDS> 0, higher voltage signal and reduced-current output are obtained with this.
When in three-level charging gear, emit signal, control to control signal driving unit using centralized control unit Signal driving unit controls the grid voltage between source electrodes U of the MOSFET in voltage selecting unitGS< 0, while controlling charging current selection The grid voltage between source electrodes U of MOSFET in unitGS< 0, lower voltage signal and high current output are obtained with this.
When in level Four charging gear, emit signal, control to control signal driving unit using centralized control unit Signal driving unit controls the grid voltage between source electrodes U of the MOSFET in voltage selecting unitGS<0;Charging current selection is controlled simultaneously The grid voltage between source electrodes U of MOSFET in unitGS>UGS(th), and drain-source voltage across poles UDS> 0, lower voltage signal is obtained with this And reduced-current output, charge saturation degree highest at this time.
Example described here is to help technical staff and understands the principle of the present invention, and those skilled in the art can be with According to the present invention disclosed the technical disclosures make it is various do not depart from various other variations and combinations of the invention, these deformation It is still within the scope of the present invention with combining.

Claims (3)

1. a kind of wireless charging device of multi gear position, which is characterized in that including voltage selecting unit, high-frequency inversion unit, power Amplifying unit, primary coil, secondary coil, rectification filtering unit, charging current selecting unit and control signal driving unit;
The input terminal of the voltage selecting unit connects DC power supply, and output end connects the input of the high-frequency inversion unit End, the voltage selecting unit includes multiple concatenated decompression devices, each decompression device switching device in parallel;
The high-frequency inversion unit is for handling the output signal of the voltage selecting unit for high frequency ac signal;
The power amplification unit is for being transmitted to the primary coil after amplifying the high frequency ac signal;
The secondary coil obtains the AC signal of the primary coil by electromagnetic induction;
The rectification filtering unit is for being changed into direct current signal for the AC signal that the secondary coil obtains and being filtered After export to the charging current selecting unit;
The charging current selecting unit includes the resistance of multiple parallel connections, resistance one derailing switch of series connection in each parallel branch Part;Output signal of the electric current of the charging current selecting unit output as the wireless charging device;
The control signal driving unit controls corresponding switching device according to different charging gears and is switched on or off.
2. the wireless charging device of multi gear position according to claim 1, which is characterized in that the wireless charging device also wraps Power Management Unit is included, when power supply signal is AC signal, the Power Management Unit is for being converted to directly AC power source Galvanic electricity source is simultaneously supplied to the voltage selecting unit.
3. the wireless charging device of multi gear position according to claim 1 or 2, which is characterized in that the wireless charging device It further include charge protection unit, the chip of the charge protection Unit selection model SL1053 is to the wireless charging device Output signal is monitored and protects.
CN201811535950.9A 2018-12-14 2018-12-14 A kind of wireless charging device of multi gear position Pending CN109450041A (en)

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110262303A (en) * 2019-04-11 2019-09-20 泰州悦诚科技信息咨询中心 Adaptive device control apparatus
CN111697648A (en) * 2020-06-10 2020-09-22 上海空间电源研究所 Error amplification circuit with three control loops for lithium ion storage battery and control method thereof
CN113572207A (en) * 2020-04-28 2021-10-29 深圳市万普拉斯科技有限公司 Wireless charging circuit and method and mobile terminal

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103209347A (en) * 2013-04-08 2013-07-17 四川长虹电器股份有限公司 Set top box (STB) with wireless charging function and wireless charging method thereof
CN104917266A (en) * 2015-07-10 2015-09-16 李文华 Emergency starting power supply with multi-gear wireless charge function for automobile
CN106712312A (en) * 2016-08-17 2017-05-24 桐城信邦电子有限公司 Novel wireless energy transmission power supply generator system
CN208158203U (en) * 2018-05-23 2018-11-27 深圳市金威澎电子有限公司 Wireless charging device

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103209347A (en) * 2013-04-08 2013-07-17 四川长虹电器股份有限公司 Set top box (STB) with wireless charging function and wireless charging method thereof
CN104917266A (en) * 2015-07-10 2015-09-16 李文华 Emergency starting power supply with multi-gear wireless charge function for automobile
CN106712312A (en) * 2016-08-17 2017-05-24 桐城信邦电子有限公司 Novel wireless energy transmission power supply generator system
CN208158203U (en) * 2018-05-23 2018-11-27 深圳市金威澎电子有限公司 Wireless charging device

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
铁路职工岗位培训教材编审委员会编著: "《铁路通信工》", 30 June 2014 *

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110262303A (en) * 2019-04-11 2019-09-20 泰州悦诚科技信息咨询中心 Adaptive device control apparatus
CN113572207A (en) * 2020-04-28 2021-10-29 深圳市万普拉斯科技有限公司 Wireless charging circuit and method and mobile terminal
CN111697648A (en) * 2020-06-10 2020-09-22 上海空间电源研究所 Error amplification circuit with three control loops for lithium ion storage battery and control method thereof
CN111697648B (en) * 2020-06-10 2022-03-04 上海空间电源研究所 Error amplification circuit with three control loops for lithium ion storage battery and control method thereof

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