Secondary coil of receiver for non-contact charging system

A secondary coil and charging system technology, applied in the direction of electromagnetic wave system, transformer/inductor coil/winding/connection, inductor, etc., can solve the problem of insufficient charging efficiency, increase the size and weight of cellular phones, and increase product costs and other problems to achieve the effect of reducing the reduction of charging efficiency
CN104508944AInactive Publication Date: 2015-04-08金宣燮
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
金宣燮
Publication Date
2015-04-08
Estimated Expiration
Not applicable · inactive patent

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Abstract

Provided is a secondary coil (40) applied to an electromagnetic induction type non-contact charging system according to the present invention, the secondary coil including: a substrate (41); a first coil 42 stacked on one side of the substrate (41) and having a first internal space (42a) formed in its center; a second coil 43 stacked on the other side of the substrate (41) and having a second internal space (43a) formed in its center; a first additional pattern (44) electrically connected to the first coil (42); and a second additional pattern (45) electrically connected to the second coil (43), wherein the first internal space (42a) and the second internal space (43a) are not vertically aligned, but "are non-overlappingly arranged" to deviate by a predetermined distance in a horizontal direction.
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Description

technical field

[0001] The present invention relates generally to contactless charging systems, and more particularly to a receiver's secondary coil for a contactless charging system for use in a transmitter's primary coil and a receiver's Electromagnetic induction generated between a secondary coil placed close to the primary coil charges a battery electrically connected to the secondary coil. Background technique

[0002] Repeatedly rechargeable batteries have been widely used in place of disposable batteries to power various portable devices as well as cellular phones. Generally, a wired (contact) charging method is widely used in charging a rechargeable battery, but recently a non-contact (wireless) charging method is increasingly used.

[0003] Examples of conventional techniques related to non-contact charging of cellular phones are as follows: "Contactless charging system of radio telephone" disclosed in Korean Patent Publication No. 10-1995-0005819 (published on May...

Claims

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