CN104539031B - Wireless charging method based on wireless energy transfer system - Google Patents
Wireless charging method based on wireless energy transfer system Download PDFInfo
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- CN104539031B CN104539031B CN201410835369.4A CN201410835369A CN104539031B CN 104539031 B CN104539031 B CN 104539031B CN 201410835369 A CN201410835369 A CN 201410835369A CN 104539031 B CN104539031 B CN 104539031B
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- 238000000034 method Methods 0.000 title claims abstract description 30
- 238000002474 experimental method Methods 0.000 claims description 4
- 235000013399 edible fruits Nutrition 0.000 claims 1
- 230000032683 aging Effects 0.000 abstract description 3
- 230000005611 electricity Effects 0.000 description 6
- 230000005540 biological transmission Effects 0.000 description 4
- 238000009434 installation Methods 0.000 description 2
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
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Classifications
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- H02J5/005—
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- H02J7/025—
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- H02J7/045—
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- Charge And Discharge Circuits For Batteries Or The Like (AREA)
Abstract
Wireless charging method based on wireless energy transfer system, is related to a kind of wireless charging method, and the present invention is to solve the problems, such as that existing charging method is dangerous, easy to aging, inconvenient.Charging method detailed process of the present invention is：Load is charged using initial charge current according to initial operating frequency；Controller obtains reference charge electric current according to the resonant frequency of load acquisition system according to the resonant frequency；Constant-current charge is carried out for load according to reference charge current control energy acceptance device；Judge whether charging voltage is less than reference charge upper voltage limit, if carrying out constant-voltage charge to load after otherwise reducing input direct voltage by the BUCK circuits in energy acceptance device；Judge whether input direct voltage is more than threshold value, if otherwise adjust resonant frequency carries out trickle charge for load.The present invention is used for wireless charging.
Description
Technical field
The present invention relates to a kind of wireless charging method.
Background technology
Electronic installation in the market is most of to be charged by the way of cable, if user uses more electricity
Sub- equipment, and charge electronic devices specification is different, then must retain various types of cable chargers, thus cause user
Frustration, if for example, lose wherein charger, need to buy the charger again to fill corresponding electronic installation
Electricity.
The content of the invention
The invention aims to solve the problems, such as that existing charging method is dangerous, easy to aging, inconvenient, there is provided a kind of
Wireless charging method based on wireless energy transfer system.
Wireless charging method of the present invention based on wireless energy transfer system, the wireless charging method are based on wireless energy
Measure Transmission system to realize, the wireless energy transfer system includes energy emitting device, energy acceptance device and controller, energy
Emitter connects power supply, and the connection load of energy acceptance device, energy emitting device and energy acceptance device pass through coupling
Mode wireless connection, load is connected on the collection signal input part of controller, energy is connected in the control signal output of controller
Measure reception device；
The detailed process of this method is：
Step 1, wireless energy transfer system are charged according to initial operating frequency using initial charge current to load；
Step 2, controller obtain reference charge electricity according to the resonant frequency of load acquisition system according to the resonant frequency
Stream；
Step 3, wireless energy transfer system carry out constant current according to reference charge current control energy acceptance device for load
Charging；
Step 4, controller judge whether charging voltage is less than reference charge upper voltage limit, if it is return and perform step
2, if otherwise performing step 5；
Step 5, load progress constant pressure is filled after reducing input direct voltage by the BUCK circuits in energy acceptance device
Electricity；
Step 6, judge whether input direct voltage is more than threshold value, if it is return and perform step 5, if otherwise performed
Step 7；
Step 7, controller regulation resonant frequency, control energy acceptance device to carry out trickle charge for load.
Advantages of the present invention：Wireless charging method proposed by the present invention based on wireless energy transfer system overcomes tradition
Wired plug-in charging modes bring it is dangerous, easy to aging, inconvenient the problems such as, have a wide range of applications, in electric automobile
Battery charging, the application in the field such as household electrical appliances charging, intelligent carrier substantially increase automation and intelligentification level.
Brief description of the drawings
Fig. 1 is the FB(flow block) of the wireless charging method of the present invention based on wireless energy transfer system；
Fig. 2 is the structural representation of wireless energy transfer system.
Embodiment
Embodiment one：Illustrate present embodiment with reference to Fig. 1-Fig. 2, wireless energy is based on described in present embodiment
The wireless charging method of Transmission system is measured, the wireless charging method is realized based on wireless energy transfer system, the wireless energy
Transmission system includes energy emitting device, energy acceptance device and controller, energy emitting device connection power supply, and energy connects
Receiving apparatus connection load, energy emitting device and energy acceptance device are believed by coupled modes wireless connection, the collection of controller
Load is connected on number input, energy acceptance device is connected in the control signal output of controller；
The detailed process of this method is：
Step 1, wireless energy transfer system are charged according to initial operating frequency using initial charge current to load；
Step 2, controller obtain reference charge electricity according to the resonant frequency of load acquisition system according to the resonant frequency
Stream；
Step 3, wireless energy transfer system carry out constant current according to reference charge current control energy acceptance device for load
Charging；
Step 4, controller judge whether charging voltage is less than reference charge upper voltage limit, if it is return and perform step
2, if otherwise performing step 5；
Step 5, load progress constant pressure is filled after reducing input direct voltage by the BUCK circuits in energy acceptance device
Electricity；
Step 6, judge whether input direct voltage is more than threshold value, if it is return and perform step 5, if otherwise performed
Step 7；
Step 7, controller regulation resonant frequency, control energy acceptance device to carry out trickle charge for load.
In present embodiment, the purpose of constant-voltage charge in step 5：When system charging voltage reaches reference charge upper voltage limit
When, system enters constant-voltage phase, and the process is constant-pressure drop stream process, can influence system efficiency of transmission using mode of frequency regulation, simultaneously
There is tuning range limitation in system, significantly frequency modulation can cause system resonance to collapse, and more serious conditions are entered in resonance peak, are burnt
Device is ruined, therefore using frequency voltage drop method is determined, is mainly depressured and controlled by BUCK circuit realirations, reduce input direct voltage, so as to
Reach the purpose of drop stream.
Embodiment two：Present embodiment is described further to embodiment one, and system is obtained described in step 2
During resonant frequency, controller carries out open loop experiment test, and the frequency modulation of resonant frequency is determined according to open loop experiment test result
Scope.
Embodiment three：Present embodiment is described further to embodiment one, and threshold value described in step 6 is output
Magnitude of voltage when electric current is 0A.
Claims (3)
1. the wireless charging method based on wireless energy transfer system, it is real that the wireless charging method is based on wireless energy transfer system
Existing, the wireless energy transfer system includes energy emitting device, energy acceptance device and controller, energy emitting device connection
Power supply, the connection load of energy acceptance device, energy emitting device and energy acceptance device by coupled modes wireless connection,
Load is connected on the collection signal input part of controller, energy acceptance device is connected in the control signal output of controller；
Characterized in that, the detailed process of this method is：
Step 1, wireless energy transfer system are charged according to initial operating frequency using initial charge current to load；
Step 2, controller obtain reference charge electric current according to the resonant frequency of load acquisition system according to the resonant frequency；
Step 3, wireless energy transfer system carry out constant-current charge according to reference charge current control energy acceptance device for load；
Step 4, controller judge whether charging voltage is less than reference charge upper voltage limit, if it is return and perform step 2, such as
Otherwise fruit performs step 5；
Step 5, constant-voltage charge is carried out to load after reducing input direct voltage by the BUCK circuits in energy acceptance device；
Step 6, judge whether input direct voltage is more than threshold value, if it is return and perform step 5, if otherwise performing step
7；
Step 7, controller regulation resonant frequency, control energy acceptance device to carry out trickle charge for load；
Step 5 is reduced input direct voltage and used by the BUCK circuits in energy acceptance device determines frequency voltage drop method.
2. the wireless charging method according to claim 1 based on wireless energy transfer system, it is characterised in that step 2
During the resonant frequency of the acquisition system, controller carries out open loop experiment test, is determined according to open loop experiment test result
The tuning range of resonant frequency.
3. the wireless charging method according to claim 1 based on wireless energy transfer system, it is characterised in that step 6
The threshold value is magnitude of voltage when output current is 0A.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201410835369.4A CN104539031B (en) | 2014-12-29 | 2014-12-29 | Wireless charging method based on wireless energy transfer system |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201410835369.4A CN104539031B (en) | 2014-12-29 | 2014-12-29 | Wireless charging method based on wireless energy transfer system |
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| CN104539031A CN104539031A (en) | 2015-04-22 |
| CN104539031B true CN104539031B (en) | 2018-01-30 |
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Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN105871000B (en) * | 2016-04-08 | 2018-07-10 | 深圳市清友能源技术有限公司 | A kind of current control method of DC charging motor |
| WO2018157371A1 (en) * | 2017-03-03 | 2018-09-07 | 小天才科技有限公司 | Non-contact charging device |
| CN109450032B (en) * | 2018-12-04 | 2021-08-24 | 北京小米移动软件有限公司 | Wireless charging processing method, device and equipment |
| CN110126648B (en) * | 2019-04-25 | 2021-10-26 | 西安理工大学 | Self-optimizing tuning control method for tracking maximum current of wireless charging of electric automobile |
Citations (1)
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|---|---|---|---|---|
| CN103457362A (en) * | 2012-06-04 | 2013-12-18 | 比亚迪股份有限公司 | Wireless charging sending device, wireless charging system and wireless charging control method |
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| BR112013023212A2 (en) * | 2011-03-11 | 2017-01-03 | Univ Utah State | METHOD AND APPARATUS FOR CONTROLLING LCL CONVERTERS USING ASYMMETRIC VOLTAGE CANCELLATION TECHNIQUES |
| CN103855764B (en) * | 2014-01-14 | 2016-05-18 | 深圳市普林泰克科技有限公司 | Mobile device detection method on a kind of wireless charger emission end surface |
| CN104158269B (en) * | 2014-08-11 | 2016-03-16 | 长城信息产业股份有限公司 | A kind of wireless charging reflector, receiver, charging device and wireless charging method |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103457362A (en) * | 2012-06-04 | 2013-12-18 | 比亚迪股份有限公司 | Wireless charging sending device, wireless charging system and wireless charging control method |
Non-Patent Citations (1)
| Title |
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| 电动汽车动力蓄电池无线充电技术的智能化研究;李昆鹏;《中国优秀硕士学位论文全文数据库-工程科技Ⅱ辑》;20120515(第05期);C042-692 * |
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