SYSTEM AND METHOD FOR INDUCTIVE CHARGING OF PORTABLE DEVICES
First Claim
1. A system for inductive powering and charging of portable devices or batteries, comprising:
- a base unit, including one or more primary coils composed of a non-ferrite material and shaped as planar spiral coils, which are capable of generating an inductive energy for use in powering or charging multiple devices or batteries simultaneously;
a receiver unit, including a receiver coil also composed of a non-ferrite material and shaped as a planar spiral coil, which is coupled to or incorporated into a portable device or battery, wherein the secondary coil receives energy inductively from the primary coil and uses it to charge or power the portable device or battery;
means within the base unit for allowing a degree of position independence of the devices or batteries on the base unit and selectively activating the one or more primary coils; and
wherein the base unit can simultaneously charge or power additional portable devices or batteries with additional secondary coils.
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Accused Products
Abstract
A system and method for variable power transfer in an inductive charging or power system. In accordance with an embodiment the system comprises a pad or similar base unit that contains a primary, which creates an alternating magnetic field. A receiver comprises a means for receiving the energy from the alternating magnetic field from the pad and transferring it to a mobile device, battery, or other device. In accordance with various embodiments, additional features can be incorporated into the system to provide greater power transfer efficiency, and to allow the system to be easily modified for applications that have different power requirements. These include variations in the material used to manufacture the primary and/or the receiver coils; modified circuit designs to be used on the primary and/or receiver side; and additional circuits and components that perform specialized tasks, such as mobile device or battery identification, and automatic voltage or power-setting for different devices or batteries.
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Citations
20 Claims
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1. A system for inductive powering and charging of portable devices or batteries, comprising:
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a base unit, including one or more primary coils composed of a non-ferrite material and shaped as planar spiral coils, which are capable of generating an inductive energy for use in powering or charging multiple devices or batteries simultaneously; a receiver unit, including a receiver coil also composed of a non-ferrite material and shaped as a planar spiral coil, which is coupled to or incorporated into a portable device or battery, wherein the secondary coil receives energy inductively from the primary coil and uses it to charge or power the portable device or battery; means within the base unit for allowing a degree of position independence of the devices or batteries on the base unit and selectively activating the one or more primary coils; and wherein the base unit can simultaneously charge or power additional portable devices or batteries with additional secondary coils. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. A mobile device capable of being inductively powered or charged comprising:
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a battery; and a receiver for one of inductively powering the device or charging the battery in the mobile device, and wherein the receiver is one of attached to or incorporated into the battery or the mobile device. - View Dependent Claims (10, 11, 12)
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13. A system for use with a mobile device or battery for charging or powering the mobile device or battery inductively, comprising:
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a base unit including one or more primary coils therein, the primary coil having a generally planar shape so that when a current is passed through the primary coil a magnetic field is generated in a direction substantially perpendicular to the plane of the primary coil; and wherein the perpendicular magnetic field inductively generates a current in a matching receiver coil or coils within a mobile device or battery placed close to and aligned with the base unit, to charge or power the mobile device or battery. - View Dependent Claims (14, 15, 16, 17, 18, 19, 20)
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Specification