CN108199498A - A kind of wireless charging system - Google Patents
A kind of wireless charging system Download PDFInfo
- Publication number
- CN108199498A CN108199498A CN201810102369.1A CN201810102369A CN108199498A CN 108199498 A CN108199498 A CN 108199498A CN 201810102369 A CN201810102369 A CN 201810102369A CN 108199498 A CN108199498 A CN 108199498A
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- Prior art keywords
- coil
- capacitance
- optocoupler
- wireless charging
- charging system
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- 238000007600 charging Methods 0.000 title claims abstract description 55
- 238000004804 winding Methods 0.000 claims abstract description 8
- 238000006243 chemical reaction Methods 0.000 claims description 17
- 230000005540 biological transmission Effects 0.000 claims description 9
- 239000003990 capacitor Substances 0.000 claims description 9
- 230000008878 coupling Effects 0.000 claims description 3
- 238000010168 coupling process Methods 0.000 claims description 3
- 238000005859 coupling reaction Methods 0.000 claims description 3
- 230000007423 decrease Effects 0.000 claims description 3
- 230000005611 electricity Effects 0.000 claims description 3
- 238000001914 filtration Methods 0.000 claims 1
- 230000015556 catabolic process Effects 0.000 abstract description 2
- 230000001934 delay Effects 0.000 abstract 1
- 238000012512 characterization method Methods 0.000 description 1
- 238000011109 contamination Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
Classifications
-
- 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
- H02J50/00—Circuit arrangements or systems for wireless supply or distribution of electric power
- H02J50/10—Circuit arrangements or systems for wireless supply or distribution of electric power using inductive coupling
- H02J50/12—Circuit arrangements or systems for wireless supply or distribution of electric power using inductive coupling of the resonant type
-
- 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
- H02J50/00—Circuit arrangements or systems for wireless supply or distribution of electric power
- H02J50/70—Circuit arrangements or systems for wireless supply or distribution of electric power involving the reduction of electric, magnetic or electromagnetic leakage fields
-
- H02J7/025—
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- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Power Engineering (AREA)
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Charge And Discharge Circuits For Batteries Or The Like (AREA)
Abstract
The invention discloses a kind of wireless charging system, which includes：First coil, the second coil, tertiary coil, rectification circuit；The first coil, the second coil are circular for spiral, the first coil diameter is more than second coil, the first coil is enclosed in the periphery of second coil, apart from the first distance of the second coil outer diameter d1, the tertiary coil is spirally wound in the first coil, and second distance d2 is set between first coil, the winding direction and the first coil hand of spiral are tangent；First, second and third coil output connects the rectification circuit, the rectification circuit output end connection warning circuit, controller, alarm elements.The present invention provides a kind of wireless charging system, by setting the warning circuit being connect with filter circuit output terminal and DC/DC converter output ends so that each power breakdown alarm can at the right time, and there is no time delays.Meanwhile electromagnetic energy is fully received, reduce the loss of electromagnetic energy.
Description
Technical field
The present invention relates to a kind of wireless charging technical field, especially one kind to be informed in time for power blackout situation
Wireless charging system.
Background technology
Electric power be for the normal operation of load it is highly important, in particular, for example as pacemaker etc. for human body and
Say extremely important device.Existing pacemaker will gradually not have over time after being implanted in human body
Electric power needs to use wirelessly use to be set to external device and charges to internal device.
However, whether existing charging modes can not timely characterization apparatus be electrically charged.I.e. if during electric power is unexpected
It is disconnected, can not user be known, and then can not ensure that equipment can be by timely fully charged.
In the prior art, high cost is needed to carry out the alignment of transmitting coil and receiving coil, is carrying out wireless charging
In the process, leakage field phenomenon is serious, and the radio magnetic wave that transmitting coil can not be made full use of to send causes the waste of the energy, also makes
It is serious into Contamination of Electromagnetic Wave.
Invention content
Therefore, it in view of the above-mentioned problems, the present invention provides a kind of wireless charging system, is exported by setting and filter circuit
End and the warning circuit of DC/DC converter output ends connection so that each power breakdown alarm can at the right time, will not
Existence time postpones.
In order to achieve the above object, the present invention proposes a kind of wireless charging system, which includes：First Line
Circle, the second coil, tertiary coil, rectification circuit；The first coil, the second coil are circular for spiral, the first coil
Diameter is more than second coil, and the first coil is enclosed in the periphery of second coil, outside second coil
Diameter the first distance d1, the tertiary coil is spirally wound in the first coil, and second is set between first coil
Distance d2, the winding direction and the first coil hand of spiral are tangent；First, second and third coil output connects institute
State rectification circuit, the rectification circuit output end connection warning circuit, controller, alarm elements.
The wireless charging system further includes filter circuit, reaction diode, the first capacitance, DC/DC converters.
The wireless charging system, the first coil, the second coil sense the linear type magnetic line of force in transmitting coil,
The magnetic line of force to deflect in the tertiary coil sensing transmitting coil, the first coil use single-turn circular coil, the third
Insulated support is set between coil and the first coil.
The wireless charging system, second coil are wrapped on fluted body shelf, and the fluted body shelf includes
Both sides protrusion, intermediate recess structure, wherein, the bottom surface of both sides protrusion and the sunk structure is shielded layer, described
Second coil is placed in the sunk structure, and the first coil and the tertiary coil are arranged on the outer of the both sides protrusion
Side.
The wireless charging system, warning circuit include optocoupler, resistance, the second capacitance, amplifier；The two of secondary windings
Two input terminals of end connection rectification circuit, one end of the first output terminal connection filter circuit of rectification circuit, rectification circuit
Second output terminal is grounded, and the other end ground connection of filter circuit, the first output terminal of rectification circuit is also connected with the sun of reaction diode
Pole, the cathode of reaction diode connect the first end of the first capacitance, the other end ground connection of the first capacitance, the first end of the first capacitance
It is also connected with the input terminal of DC/DC converters, the output terminal connection load of DC/DC converters；First output terminal of rectification circuit is also
Connect the anode of the diode in warning circuit in optocoupler, the minus earth of diode in optocoupler, the transmitting of switching tube in optocoupler
Pole is grounded, and the collector of switching tube connects one end of resistance in warning circuit, the other end connection DC/DC conversions of resistance in optocoupler
The output terminal of device, the collector of switching tube is also connected with the first end of the second capacitance in warning circuit in optocoupler, and the of the second capacitance
Two ends are grounded, and the first end of the second capacitance is also connect by amplifier with controller, and controller is connect with alarm elements.
The wireless charging system, the mode of the wireless power transmission is resonance type wireless power transmission.
The wireless charging system, the rectification circuit are full bridge rectifier.
The wireless charging system, the DC/DC converters are for reducing voltage level and improve levels of current.
The wireless charging system, when the device with primary coil provides electric power for the no-delay warning device,
Secondary coil and primary coil electromagnetic coupling in the no-delay warning device receive the electric energy of primary coil transmission, the electric energy
It is rectified circuit rectifies, rectification circuit output power, so that two in the optocoupler being connect with the first output terminal of rectification circuit
Pole pipe is switched on, and diode sends out bright so that the switching tube in optocoupler is switched on, and the electric power of rectification circuit output passes through
Reaction diode gives the first capacitor charging, and passes through DC/DC converters and provide electric power for load；And DC/DC converter output ends
Electric power ground is flowed to by switching tube in optocoupler by resistance so that with the collector and emitter of the switching tube in optocoupler simultaneously
The voltage very little of second capacitance of connection, so that less than the input threshold value of amplifier, therefore amplifier does not export, thus will not
Signal is transmitted to controller；When the device with primary coil suddenly far from the no-delay warning device when, that is, there is primary line
When the device of circle can not provide electric power for the no-delay warning device, rectification circuit will not have output, then two poles in optocoupler
Pipe ends, so that the switching tube in optocoupler will not work, at this point, since in the input sides of DC/DC converters, there are first
Capacitance, therefore the DC/DC converters are still working, output power gives the second capacitor charging after resistance, the second capacitance
Voltage gradually rises up to the input threshold value more than amplifier, and amplifier is caused to there is output, so as to transmit signal, control to controller
Device processed controls alarm elements to send out alarm when receiving signal；With the continuous electric discharge of the first capacitance, when the electricity of the first capacitance
Pressure drop low to less than DC/DC converters conversion lower voltage limit when, DC/DC converters will no longer work, so as to will not be again to the
Two capacitor chargings, the second capacitance will be in discharge condition, the output of amplifier be provided by the electric power of its own electric discharge, with the
Two capacitances gradually discharge, and voltage continuously decreases, when the voltage of the second capacitance is less than the input threshold value of amplifier, amplifier
It will no longer work, and then there is no outputs, so as to stop sending a signal to controller, controller further stops alarm elements
Alarm action.
The design that the present invention passes through optocoupler, resistance, the second capacitance, amplifier so that the second capacitance can discharge every time
To the input threshold value of amplifier, so as to ensure, alarm can be promptly and accurately every time.
The present invention can have by the way that the coil of multiple and different types is set to be coordinated and receive transmitting coil to greatest extent
Electric energy reduces leakage field phenomenon, meanwhile, the precision that must be strictly aligned between transmitting coil and receiving coil is reduced, is reduced
The control cost of control device.The efficiency of wireless charging can be greatly improved, meanwhile, it is capable to when receiving dotted line charging, in time
The alarm control of wireless charging is carried out, is charged in time, is quickly found out the transmit coil of charging.
Description of the drawings
Fig. 1 is the structure diagram of wireless charging system.
Specific embodiment
As shown in Figure 1, the present invention proposes a kind of wireless charging system, which includes：First coil, second
Coil, tertiary coil, rectification circuit；The first coil, the second coil are circular for spiral, and the first coil diameter is more than
Second coil, the first coil are enclosed in the periphery of second coil, apart from second coil outer diameter first away from
From d1, the tertiary coil is spirally wound in the first coil, and second distance d2, institute are set between first coil
It states winding direction and the first coil hand of spiral is tangent；First, second and third coil output connects the rectified current
Road, the rectification circuit output end connection warning circuit, controller, alarm elements.
The wireless charging system further includes filter circuit, reaction diode, the first capacitance, DC/DC converters.
The wireless charging system, the first coil, the second coil sense the linear type magnetic line of force in transmitting coil,
The magnetic line of force to deflect in the tertiary coil sensing transmitting coil, the first coil use single-turn circular coil, the third
Insulated support is set between coil and the first coil.
The wireless charging system, second coil are wrapped on fluted body shelf, and the fluted body shelf includes
Both sides protrusion, intermediate recess structure, wherein, the bottom surface of both sides protrusion and the sunk structure is shielded layer, described
Second coil is placed in the sunk structure, and the first coil and the tertiary coil are arranged on the outer of the both sides protrusion
Side.
The wireless charging system, warning circuit include optocoupler, resistance, the second capacitance, amplifier；The two of secondary windings
Two input terminals of end connection rectification circuit, one end of the first output terminal connection filter circuit of rectification circuit, rectification circuit
Second output terminal is grounded, and the other end ground connection of filter circuit, the first output terminal of rectification circuit is also connected with the sun of reaction diode
Pole, the cathode of reaction diode connect the first end of the first capacitance, the other end ground connection of the first capacitance, the first end of the first capacitance
It is also connected with the input terminal of DC/DC converters, the output terminal connection load of DC/DC converters；First output terminal of rectification circuit is also
Connect the anode of the diode in warning circuit in optocoupler, the minus earth of diode in optocoupler, the transmitting of switching tube in optocoupler
Pole is grounded, and the collector of switching tube connects one end of resistance in warning circuit, the other end connection DC/DC conversions of resistance in optocoupler
The output terminal of device, the collector of switching tube is also connected with the first end of the second capacitance in warning circuit in optocoupler, and the of the second capacitance
Two ends are grounded, and the first end of the second capacitance is also connect by amplifier with controller, and controller is connect with alarm elements.
The wireless charging system, the mode of the wireless power transmission is resonance type wireless power transmission.
The wireless charging system, the rectification circuit are full bridge rectifier.
The wireless charging system, the DC/DC converters are for reducing voltage level and improve levels of current.
The wireless charging system, when the device with primary coil provides electric power for the no-delay warning device,
Secondary coil and primary coil electromagnetic coupling in the no-delay warning device receive the electric energy of primary coil transmission, the electric energy
It is rectified circuit rectifies, rectification circuit output power, so that two in the optocoupler being connect with the first output terminal of rectification circuit
Pole pipe is switched on, and diode sends out bright so that the switching tube in optocoupler is switched on, and the electric power of rectification circuit output passes through
Reaction diode gives the first capacitor charging, and passes through DC/DC converters and provide electric power for load；And DC/DC converter output ends
Electric power ground is flowed to by switching tube in optocoupler by resistance so that with the collector and emitter of the switching tube in optocoupler simultaneously
The voltage very little of second capacitance of connection, so that less than the input threshold value of amplifier, therefore amplifier does not export, thus will not
Signal is transmitted to controller；When the device with primary coil suddenly far from the no-delay warning device when, that is, there is primary line
When the device of circle can not provide electric power for the no-delay warning device, rectification circuit will not have output, then two poles in optocoupler
Pipe ends, so that the switching tube in optocoupler will not work, at this point, since in the input sides of DC/DC converters, there are first
Capacitance, therefore the DC/DC converters are still working, output power gives the second capacitor charging after resistance, the second capacitance
Voltage gradually rises up to the input threshold value more than amplifier, and amplifier is caused to there is output, so as to transmit signal, control to controller
Device processed controls alarm elements to send out alarm when receiving signal；With the continuous electric discharge of the first capacitance, when the electricity of the first capacitance
Pressure drop low to less than DC/DC converters conversion lower voltage limit when, DC/DC converters will no longer work, so as to will not be again to the
Two capacitor chargings, the second capacitance will be in discharge condition, the output of amplifier be provided by the electric power of its own electric discharge, with the
Two capacitances gradually discharge, and voltage continuously decreases, when the voltage of the second capacitance is less than the input threshold value of amplifier, amplifier
It will no longer work, and then there is no outputs, so as to stop sending a signal to controller, controller further stops alarm elements
Alarm action.
The design that the present invention passes through optocoupler, resistance, the second capacitance, amplifier so that the second capacitance can discharge every time
To the input threshold value of amplifier, so as to ensure, alarm can be promptly and accurately every time.
The present invention can have by the way that the coil of multiple and different types is set to be coordinated and receive transmitting coil to greatest extent
Electric energy reduces leakage field phenomenon, meanwhile, the precision that must be strictly aligned between transmitting coil and receiving coil is reduced, is reduced
The control cost of control device.The efficiency of wireless charging can be greatly improved, meanwhile, it is capable to when receiving dotted line charging, in time
The alarm control of wireless charging is carried out, is charged in time, is quickly found out the transmit coil of charging.
It is it should be noted that made for the present invention further specifically the above content is specific embodiment is combined
It is bright, it is impossible to assert that the specific embodiment of the present invention is only limitted to this, under the above-mentioned guidance of the present invention, those skilled in the art can
To carry out various improvement and deformation on the basis of above-described embodiment, and these are improved or deformation is fallen in protection model of the invention
In enclosing.
Claims (9)
1. a kind of wireless charging system, which is characterized in that the wireless charging system includes：First coil, the second coil, third line
Circle, rectification circuit；The first coil, the second coil are circular for spiral, and the first coil diameter is more than second line
Circle, the first coil is enclosed in the periphery of second coil, apart from the first distance of the second coil outer diameter d1, described the
Three-winding is spirally wound in the first coil, and second distance d2, the winding direction are set between first coil
It is tangent with the first coil hand of spiral；First, second and third coil output connects the rectification circuit, the rectification
Circuit output end connection warning circuit, controller, alarm elements.
2. wireless charging system according to claim 1, which is characterized in that further include filter circuit, reaction diode,
One capacitance, DC/DC converters.
3. wireless charging system according to claim 2, which is characterized in that the first coil, the second coil sensing hair
The linear type magnetic line of force in ray circle, the tertiary coil sense the magnetic line of force to deflect in transmitting coil, the First Line
Circle sets insulated support using single-turn circular coil between the tertiary coil and the first coil.
4. wireless charging system according to claim 3, which is characterized in that second coil is wrapped in fluted body shelf
On, the fluted body shelf is raised including both sides, intermediate recess structure, wherein, both sides protrusion and the recess knot
The bottom surface of structure is shielded layer, and second coil is placed in the sunk structure, the first coil and the tertiary coil
It is arranged on the outside of the both sides protrusion.
5. wireless charging system according to claim 4, which is characterized in that warning circuit includes optocoupler, resistance, the second electricity
Hold, amplifier；Two input terminals of the both ends connection rectification circuit of secondary windings, the first output terminal connection filtering of rectification circuit
One end of circuit, the second output terminal ground connection of rectification circuit, the other end ground connection of filter circuit, the first output terminal of rectification circuit
The anode of reaction diode is also connected with, the cathode of reaction diode connects the first end of the first capacitance, the other end of the first capacitance
Ground connection, the first end of the first capacitance are also connected with the input terminal of DC/DC converters, the output terminal connection load of DC/DC converters；It is whole
First output terminal of current circuit is also connected in warning circuit the anode of the diode in optocoupler, and the cathode of diode connects in optocoupler
Ground, the emitter ground connection of switching tube in optocoupler, in optocoupler in the collector connection warning circuit of switching tube resistance one end, resistance
Other end connection DC/DC converters output terminal, the collector of switching tube is also connected with the second capacitance in warning circuit in optocoupler
First end, the second end ground connection of the second capacitance, the first end of the second capacitance also connect by amplifier with controller, controller
It is connect with alarm elements.
6. wireless charging system according to claim 5, which is characterized in that the mode of the wireless power transmission is resonance
Formula wireless power transmission.
7. wireless charging system according to claim 6, which is characterized in that the rectification circuit is full bridge rectifier.
8. wireless charging system according to claim 7, which is characterized in that the DC/DC converters are for reducing voltage
Level simultaneously improves levels of current.
9. wireless charging system according to claim 8, which is characterized in that when the device with primary coil prolongs for the nothing
When Times alarm device provides electric power, secondary coil and primary coil electromagnetic coupling in the no-delay warning device receive primary
The electric energy of coil transmission, the electric energy are rectified circuit rectifies, rectification circuit output power, so that defeated with rectification circuit first
Diode in the optocoupler of outlet connection is switched on, and diode sends out bright so that the switching tube in optocoupler is switched on, whole
The electric power that current circuit exports gives the first capacitor charging by reaction diode, and passes through DC/DC converters and provide electric power for load；
And the electric power of DC/DC converter output ends flows to ground by resistance by the switching tube in optocoupler so that with the switch in optocoupler
The voltage very little of second capacitance of the collector and emitter parallel connection of pipe, so that less than the input threshold value of amplifier, therefore put
Big device does not export, so as to transmit signal to controller；When the device with primary coil is suddenly far from the no-delay report
During alarm device, i.e., when the device with primary coil can not provide electric power for the no-delay warning device, rectification circuit will not
There is output, then the diode cut-off in optocoupler, so that the switching tube in optocoupler will not work, at this point, due to turning in DC/DC
The input side of parallel operation is there are the first capacitance, therefore the DC/DC converters are still working, and output power gives second after resistance
Capacitor charging, the voltage of the second capacitance gradually rise up to the input threshold value more than amplifier, amplifier are caused to there is output, so as to
Signal is transmitted to controller, controller controls alarm elements to send out alarm when receiving signal；It is continuous with the first capacitance
Electric discharge, when the first capacitance voltage drop low to less than DC/DC converters conversion lower voltage limit when, DC/DC converters will no longer
Work, so as to give the second capacitor charging again, the second capacitance will be in discharge condition, be provided by the electric power of its own electric discharge
The output of amplifier, as the second capacitance gradually discharges, voltage continuously decreases, until the voltage of the second capacitance is less than amplifier
Input threshold value when, amplifier will no longer work, and then there is no output, so as to stop sending a signal to controller, controller
Further stop the alarm action of alarm elements.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810102369.1A CN108199498B (en) | 2018-02-01 | 2018-02-01 | Wireless charging system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810102369.1A CN108199498B (en) | 2018-02-01 | 2018-02-01 | Wireless charging system |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108199498A true CN108199498A (en) | 2018-06-22 |
| CN108199498B CN108199498B (en) | 2020-10-13 |
Family
ID=62591756
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810102369.1A Active CN108199498B (en) | 2018-02-01 | 2018-02-01 | Wireless charging system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108199498B (en) |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201233570Y (en) * | 2008-06-24 | 2009-05-06 | 同方股份有限公司 | Computer having power-off protection module |
| CN104991153A (en) * | 2015-07-10 | 2015-10-21 | 合肥美的电冰箱有限公司 | Refrigeration device and power-off alarm device of refrigeration device |
| CN105720696A (en) * | 2014-12-19 | 2016-06-29 | 联发科技股份有限公司 | Wireless power transmission device |
-
2018
- 2018-02-01 CN CN201810102369.1A patent/CN108199498B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201233570Y (en) * | 2008-06-24 | 2009-05-06 | 同方股份有限公司 | Computer having power-off protection module |
| CN105720696A (en) * | 2014-12-19 | 2016-06-29 | 联发科技股份有限公司 | Wireless power transmission device |
| CN104991153A (en) * | 2015-07-10 | 2015-10-21 | 合肥美的电冰箱有限公司 | Refrigeration device and power-off alarm device of refrigeration device |
Also Published As
| Publication number | Publication date |
|---|---|
| CN108199498B (en) | 2020-10-13 |
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Effective date of registration: 20200911 Address after: 3 / F, building A2, block a, Fangxing science and Technology Park, No. 13, Baonan Road, Longgang street, Longgang District, Shenzhen City, Guangdong Province Applicant after: SHENZHEN WEIERLISI TECHNOLOGY Co.,Ltd. Address before: 251700 Dongguan Street, Huimin County, Binzhou, Shandong Province, No. 81 Applicant before: Yang Ni |
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