Check patentability & draft patents in minutes with Patsnap Eureka AI!

A Design Method for Series Compensation of Wireless Charging Coil Adapting to Wide Load Range

A series compensation and wireless charging technology, applied in the direction of circuit devices, electrical components, etc., can solve the problems of increasing system complexity, system light load, no-load working limit, increasing cost, etc., to achieve increased complexity and simple compensation design method Feasible, cost-increasing effect

Active Publication Date: 2019-02-26
ZHEJIANG UNIV
View PDF4 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In this design method, when the resistance of the load resistance is large or the system is no-loaded, a large current will be generated on the primary side of the coil, and a high induced electromotive force will be generated on the secondary side of the coil, which will cause damage to the power devices on the secondary side of the coil, so the system is light-loaded. , no-load work is restricted
General solutions, such as the method of controlling the output voltage of the secondary side of the coil to be constant and the current of the primary side of the control coil to be constant, will increase the complexity of the system, increase the cost, and even reduce the system efficiency

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
  • A Design Method for Series Compensation of Wireless Charging Coil Adapting to Wide Load Range
  • A Design Method for Series Compensation of Wireless Charging Coil Adapting to Wide Load Range
  • A Design Method for Series Compensation of Wireless Charging Coil Adapting to Wide Load Range

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0018] Such as figure 1 Shown is the coil series compensation equivalent circuit adopting the inventive method, and it comprises coil primary side self-inductance L 1 , the secondary self-inductance L 2 , the primary side compensation capacitor C 1 , the secondary compensation capacitor C 2 .

[0019] The design method of the compensation network is: after determining the operating angular frequency ω of the system, the self-inductance L of the primary side of the coil 1 , Secondary side self-inductance L 2 , After the mutual inductance M, the secondary side compensation capacitance C can be obtained from the self-inductance resonance compensation of the secondary side of the coil 2 The value is

[0020]

[0021] According to the equivalent circuit of wireless charging coil series compensation, ignoring the influence of coil parasitic resistance, the load resistance R L When changing, the maximum power that the coil can output is:

[0022]

[0023] In order to en...

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 discloses a wireless charging coil series compensation design method being adaptive to a wide load range. The design method comprises the following steps: 1) designing a wireless charging coil secondary compensation capacitor and coil secondary self-inductance resonance compensation; 2) according to the coil output power required by the system, determining the maximum value of an original primary compensation capacitor; and 3) according to the maximum value, of the coil secondary output voltage, allowed by the system, determining the minimum of the primary compensation capacitor. The wireless charging coil series compensation design method is simple and practicable, compared with a traditional design method, and can realize that the system can work normally in the light load or zero load state without extra control and only needs suitably increasing the capacitance of the coil primary compensation capacitor. The wireless charging coil series compensation design method does not increase the complexity of the system and the cost, and does not influence the efficiency of the coil.

Description

technical field [0001] The invention relates to a design method for a wireless charging coil series compensation network, in particular to a design method for a wireless charging coil series compensation adapting to a wide load range. Background technique [0002] The series compensation of the wireless charging coil usually includes a coil for magnetic coupling to transmit electric energy, and compensation capacitors for the primary and secondary sides of the coil. The traditional coil series compensation design method is to design the resonance of the primary self-inductance and the primary compensation capacitor, and the secondary self-inductance and the secondary compensation capacitor at the rated operating frequency point. In this design method, when the resistance of the load resistance is large or the system is no-loaded, a large current will be generated on the primary side of the coil, and a high induced electromotive force will be generated on the secondary side o...

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
Patent Type & Authority Patents(China)
IPC IPC(8): H02J50/12
CPCH02J5/005
Inventor 崔鸿志陈敏
Owner ZHEJIANG UNIV
Features
  • R&D
  • 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