Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Four-coil receiving device improving mobile wireless electric energy transmission quality, and application of four-coil receiving device

A receiving device and wireless energy technology, which is applied in the direction of circuit devices, power management, transportation and packaging, etc., can solve the problems affecting the use effect of electric vehicles and other equipment, affecting the quality of wireless energy transmission, and damaging energy storage equipment. Effects of transmission efficiency, cost reduction, and pressure reduction on energy storage equipment

Inactive Publication Date: 2017-10-20
SHANGHAI JIAO TONG UNIV
View PDF5 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

For wireless power transmission on the move, because the position of the power receiving target (equipment that receives or consumes power, such as electric bicycles, electric vehicles, etc.) is moving rapidly, in order to improve the overall magnetic circuit situation in the actual application process Polarity-separated transmitting mechanisms are often used, but in actual operation, the voltage induced by the secondary side will fluctuate significantly, which seriously affects the quality of wireless energy transmission, and at the same time will damage the energy storage device, affecting the safety of electric vehicles and other equipment. Effect

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 more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Four-coil receiving device improving mobile wireless electric energy transmission quality, and application of four-coil receiving device
  • Four-coil receiving device improving mobile wireless electric energy transmission quality, and application of four-coil receiving device
  • Four-coil receiving device improving mobile wireless electric energy transmission quality, and application of four-coil receiving device

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] This embodiment provides a four-coil receiving device for improving the quality of wireless power transmission, which includes two sets of coil groups, each of which includes two coils, the two coils are connected to each other and facing Emitter, so that the two coils in each group of coils have a phase angle of 180 degrees in the space magnetic field, so that the space magnetic field induces two opposite electromotive forces on the two coils, and passes between the two coils. The opposite physical structure allows the electromotive forces generated on the two coils to be superimposed.

[0032] There is a 90-degree phase angle difference between the two sets of coils in the spatial magnetic field, so that when the magnetic flux passing through one set of coils is the largest, the magnetic flux passing through the other set of coils is the smallest.

[0033] It also includes an outer rectification circuit, wherein the output end of each set of coil groups is connected t...

Embodiment 2

[0037] This embodiment provides an application of the four-coil receiving device provided in Embodiment 1 to improve the quality of wireless power transmission, which is used for mobile wireless charging of electric vehicles (also known as "charging while walking"), and decomposes the energy supply track For different polarities, the bottom of the vehicle is equipped with a receiving device with four coils. During the movement of the vehicle, the four coils obtain energy at the same time, but the output voltage is relatively stable due to the difference in the phase of the spatial magnetic field.

Embodiment 3

[0039] This embodiment provides an application of the four-coil receiving device provided in Embodiment 1 to improve the quality of wireless power transmission, which can be used in all situations that do not have a battery or rely solely on energy storage equipment for insufficient running time or that the cost of energy storage equipment is too high Mobile electrical equipment, when these equipment are in any position of the track laying direction, the energy can be directly transmitted from the energy supply track to the receiving equipment end, so as to realize the stable power supply of equipment without energy storage (or with less energy storage capacity).

[0040] In this embodiment, the insufficient running time solely relying on the energy storage device refers to the situation that the running time is less than or equal to 50% of the actual required working time after a full charge.

[0041]In this embodiment, the situation that the cost of the energy storage equipme...

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

No PUM Login to View More

Abstract

The invention provides a four-coil receiving device improving mobile wireless electric energy transmission quality, and the device comprises a four-coil receiving structure and an outer rectification circuit. Each two of the coils serve as one group, and the winding directions of the coils of each group are opposite. The coils in the same group are corresponding to different magnetic field polarities at the same moment, and the distance between the two groups of coils is one fourth of the length of the receiving device in space. The two groups of coils are respectively corresponding to the peak and valley of a spatial magnetic field at the angle of the magnetic field. The output end of the two groups of coils are respectively connected with one rectification circuit, and are selectively connected in series or in parallel according to the load conditions. When the two groups of coils are connected in series, the voltages obtained by the two groups of coils through the magnetic field are overlapped, thereby obtaining a higher output voltage. When the two groups of coils are connected in parallel, the loading capability of a wireless transmission secondary side is enabled to be stronger, and more stable power is supplied to a load. The device is widely used in the field of electric car mobile charging, effectively inhibits the fluctuation of the charging voltage of an electric car in a moving process, enables the transmission process of energy to be more stable, and provides a new technical means for the mobile charging of the electric car.

Description

technical field [0001] The invention relates to the technical field of circuit design and magnetic circuit design, and belongs to the field of bipolar mobile wireless power transmission, in particular to a four-coil receiving device for improving the quality of mobile wireless power transmission and its application. Background technique [0002] Wireless charging technology is committed to cutting off the "last section" of wires that plague people's lives, and will bring great convenience and changes to people's lives. In the smart home of the future, household appliances will be placed freely without being bound by wires, and the wireless charging table will make all smart terminals no longer need to drag the charger with wires. Fossil energy is being exhausted day by day, environmental pollution is increasingly affecting people's lives, and the call for electric vehicles to replace fuel vehicles is getting louder and louder. Wireless charging roads will make electric vehic...

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
no application Login to View More
IPC IPC(8): H02J50/40B60L11/18
CPCB60L53/12H02J50/40Y02T10/70Y02T10/7072Y02T10/72Y02T90/14Y02T90/16
Inventor 张欢黄梓昂唐厚君
Owner SHANGHAI JIAO TONG UNIV
Features
  • Generate Ideas
  • Intellectual Property
  • Life Sciences
  • Materials
  • Tech Scout
Why Patsnap Eureka
  • Unparalleled Data Quality
  • Higher Quality Content
  • 60% Fewer Hallucinations
Social media
Patsnap Eureka Blog
Learn More

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2025 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com