Electromagnetic resonance type wireless charging device and control method based on CLL resonant transformation
A resonant conversion and wireless charging technology, which is applied in the direction of battery circuit devices, circuit devices, output power conversion devices, etc., can solve the problem of reducing the power transmission efficiency of the strong magnetic coupling resonant wireless charging system, safety accidents, and heating of switching devices etc. to achieve the effects of improving light load efficiency, reducing energy waste, and reducing circulation loss
Active Publication Date: 2015-04-29
SHANDONG UNIV
View PDF4 Cites 39 Cited by
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
The resonant frequency of the electromagnetic resonance wireless charging method is generally between several hundred kilohertz to several megahertz. Such a high switching frequency causes a large switching loss,
Method used
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View moreImage
Smart Image Click on the blue labels to locate them in the text.
Smart ImageViewing Examples
Examples
Experimental program
Comparison scheme
Effect test
Embodiment Construction
[0040] The present invention will be further described below in conjunction with the accompanying drawings and embodiments.
[0041] Such as figure 1 As shown, it is a soft-switching electromagnetic resonance wireless charging device based on CLL resonance conversion, including a microcontroller 1, an AC / DC rectification module 2, a transmitter voltage stabilization filter capacitor 3, a CLL resonance conversion module 4, and a transmitter coupling resonant coil 5. Receiving end coupling resonant coil 6, receiving end resonant circuit capacitor 7, receiving end AC / DC rectifier module 8, receiving end voltage stabilizing filter capacitor 9, storage battery 10 and three-phase power supply 11;
[0042] The input end of the bidirectional AC / DC rectification module 2 is connected to the three-phase power supply 11, and the output end is connected to the CLL resonant conversion module 4 after being connected in parallel with the transmitting end voltage stabilization filter capacito...
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more PUM
Login to view more Abstract
The invention discloses an electromagnetic resonance type wireless charging device and a control method based on CLL resonant transformation. The control method comprises the steps that a DC-bus voltage is acquired by a microcontroller, and the microcontroller controls the duty ratio of an MOS tube of a two-way AC/DC rectifier module, so that the stability of the input DC-bus voltage is achieved; through controlling the switching of the MOS tube of a CLL resonant conversion module, the microcontroller can inverts a direct current into an alternating current; a coupling resonance coil of a transmitting terminal sends out contravariant energy of the CLL resonant conversion module and transmits to a coupling resonance coil of a receiving terminal; after a high-frequency alternating current is received by the coupling resonance coil of the receiving terminal, rectification is conducted by an AC/DC rectifier module of the receiving terminal, stable voltage smoothing is conducted, and the coupling resonance coil of the receiving terminal conducts charging on a storage battery; a terminal voltage and a charging current of the storage battery are acquired by the microcontroller, and the duty ratio of the MOS tube of the CLL resonant conversion module is controlled by the microcontroller, so that the set charging current and the over-charge protection function are achieved. The electromagnetic resonance type wireless charging device and the control method based on the CLL resonant transformation has the advantages that working under the switching of zero voltage and zero current is achieved, the switching loss is effectively reduced, the energy transmitting efficiency is improved, and the volume of a wireless transmission device is reduced.
Description
technical field [0001] The present invention relates to the field of wireless charging, in particular to an electromagnetic resonance wireless charging device and control method based on CLL resonance conversion. Background technique [0002] The world is facing more and more serious environmental crisis and energy crisis, the decreasing of fossil fuels and the increasing seriousness of environmental problems have attracted global attention. Electric vehicles have many advantages such as energy saving and environmental protection. Vigorously developing electric vehicles has become one of the important ways to solve the crisis and is an inevitable trend in the future development of the automobile industry. Large-scale electric vehicles as mobile energy storage equipment will be an important pillar of the third industrial revolution (Energy Internet). Now the development of electric vehicles is facing a series of problems such as high battery cost, lower energy density than f...
Claims
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more Application Information
Patent Timeline
Login to view more IPC IPC(8): H02J7/02H02J17/00H02J50/12
CPCH02J7/022H02J7/025H02M3/335H02M7/217
Inventor 张承慧商云龙李超群崔纳新张奇李泽元韩尧
Owner SHANDONG UNIV
Who we serve
- R&D Engineer
- R&D Manager
- IP Professional
Why Eureka
- Industry Leading Data Capabilities
- Powerful AI technology
- Patent DNA Extraction
Social media
Try Eureka
Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.
© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap