Apparatus and method for changing magnetic flux density and receiving wireless power
First Claim
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1. An apparatus for receiving wireless power from an apparatus for transmitting the wireless power, the apparatus for receiving the wireless power comprising:
- a coil to receive the wireless power and wound to have a hollow portion; and
a metal member disposed within the hollow portion, that varies a magnetic flux density of the wireless power transmitting apparatus and is sensed by the apparatus for transmitting the wireless power by the variation of the magnetic flux density,wherein the metal member includes a stainless steel plate,wherein the coil includes any one of a winding coil structure and a lead frame coil structure, andwherein a ratio of an area of the metal member to the hollow portion of the lead frame coil is in a range of 44% to 100%, and a ratio of an area of the metal member to the hollow portion of the winding coil structure is in a range of 22% to 50%.
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Abstract
The embodiment relates to an apparatus and a method for receiving wireless power. The apparatus for receiving the wireless power according to the embodiment includes: a coil to receive the power; and a metal member to be detected by the apparatus for transmitting wireless power, wherein the coil has an empty central region, the metal member is disposed in the empty central region of the coil, and the metal member includes a stainless steel plate.
13 Citations
13 Claims
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1. An apparatus for receiving wireless power from an apparatus for transmitting the wireless power, the apparatus for receiving the wireless power comprising:
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a coil to receive the wireless power and wound to have a hollow portion; and a metal member disposed within the hollow portion, that varies a magnetic flux density of the wireless power transmitting apparatus and is sensed by the apparatus for transmitting the wireless power by the variation of the magnetic flux density, wherein the metal member includes a stainless steel plate, wherein the coil includes any one of a winding coil structure and a lead frame coil structure, and wherein a ratio of an area of the metal member to the hollow portion of the lead frame coil is in a range of 44% to 100%, and a ratio of an area of the metal member to the hollow portion of the winding coil structure is in a range of 22% to 50%. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. A method for receiving wireless power from an apparatus for transmitting the wireless power, the method comprising:
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triggering a sensor of the wireless transmitting apparatus for transmitting the wireless power by a metal member in an apparatus for receiving the wireless power; transmitting an effective signal to the apparatus for transmitting the wireless power; receiving an identification signal from the apparatus for transmitting the wireless power; and receiving the wireless power from the apparatus for transmitting the wireless power, wherein the metal member varies a magnetic flux density of the wireless power transmitting apparatus and is sensed by a variation of the magnetic flux density, and wherein the metal member includes a stainless steel plate. - View Dependent Claims (11, 12, 13)
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Specification