Wireless power transfer module for vehicles
First Claim
1. A wireless power transmission module for a vehicle comprising:
- a housing providing an internal space and including an upper plate on which a portable device to be charged is placed;
an antenna unit including a first wireless power transmission antenna operating in a magnetic induction method and a second wireless power transmission antenna operating in a magnetic resonance method; and
a shielding unit including a first shielding sheet disposed in an area corresponding to the first wireless power transmission antenna and a second shielding sheet disposed in an area corresponding to the second wireless power transmission antenna;
wherein the antenna unit is placed inside the housing so that a first distance from the first wireless power transmission antenna to an outer surface of the upper plate is shorter than a second distance from a second wireless power transmission antenna to an outer surface of the upper plate,wherein the first distance is set so that a coupling coefficient k between a reception coil included in the portable device and the first wireless power transmission antenna is 0.7 or more, and the second distance is set so that a coupling coefficient k between the reception coil included in the portable device and the second wireless power transmission antenna is less than 0.2.
1 Assignment
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Accused Products
Abstract
There is provided a wireless power transmission module for a vehicle that includes a housing providing an internal space and including an upper plate on which a portable device to be charged is placed, an antenna unit including a first wireless power transmission antenna operating in a magnetic induction method and a second wireless power transmission antenna operating in a magnetic resonance method, and a shielding unit including a first shielding sheet disposed in an area corresponding to the first wireless power transmission antenna and a second shielding sheet disposed in an area corresponding to the second wireless power transmission antenna. The antenna unit is placed inside the housing so that a first distance from the first wireless power transmission antenna to an outer surface of the upper plate is shorter than a second distance from the second wireless power transmission antenna to the outer surface of the upper plate.
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Citations
19 Claims
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1. A wireless power transmission module for a vehicle comprising:
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a housing providing an internal space and including an upper plate on which a portable device to be charged is placed; an antenna unit including a first wireless power transmission antenna operating in a magnetic induction method and a second wireless power transmission antenna operating in a magnetic resonance method; and a shielding unit including a first shielding sheet disposed in an area corresponding to the first wireless power transmission antenna and a second shielding sheet disposed in an area corresponding to the second wireless power transmission antenna; wherein the antenna unit is placed inside the housing so that a first distance from the first wireless power transmission antenna to an outer surface of the upper plate is shorter than a second distance from a second wireless power transmission antenna to an outer surface of the upper plate, wherein the first distance is set so that a coupling coefficient k between a reception coil included in the portable device and the first wireless power transmission antenna is 0.7 or more, and the second distance is set so that a coupling coefficient k between the reception coil included in the portable device and the second wireless power transmission antenna is less than 0.2. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19)
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Specification