Device for the inductive transmission of electric energy
First Claim
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1. An apparatus comprising:
- a primary coil supplied with electrical energy, the primary coil being arranged in a stationary unit; and
a secondary coil to inductively receive electrical energy from the primary coil, the secondary coil being arranged in a motor vehicle,whereinat least one of the primary coil and the secondary coil includes first and second switchable coil taps to adjust a length of an active coil portion, the active coil portion being active for inductive energy transmission,the first and second switchable coil taps are provided respectively at first and second opposing end sections of the at least one of the primary coil and the secondary coil,a first multistage switch connects the first switchable coil tap to one of a first plurality of positions at the first end section to selectively activate a specific portion of the first end section, anda second multistage switch connects the second switchable coil tap to one of a second plurality of positions at the second end section to selectively activate a specific portion of the second end section,wherein none of the first plurality of positions at the first end section overlap with any of the second plurality of positions at the second end section.
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Abstract
An apparatus inductively transmits electrical energy from a primary coil, which is arranged in a stationary unit, to a secondary coil, which is arranged in a vehicle. The primary coil and/or the secondary coil have or has at least one switchable coil tap for adjusting a coil length which is active for the inductive energy transmission.
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Citations
19 Claims
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1. An apparatus comprising:
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a primary coil supplied with electrical energy, the primary coil being arranged in a stationary unit; and a secondary coil to inductively receive electrical energy from the primary coil, the secondary coil being arranged in a motor vehicle, wherein at least one of the primary coil and the secondary coil includes first and second switchable coil taps to adjust a length of an active coil portion, the active coil portion being active for inductive energy transmission, the first and second switchable coil taps are provided respectively at first and second opposing end sections of the at least one of the primary coil and the secondary coil, a first multistage switch connects the first switchable coil tap to one of a first plurality of positions at the first end section to selectively activate a specific portion of the first end section, and a second multistage switch connects the second switchable coil tap to one of a second plurality of positions at the second end section to selectively activate a specific portion of the second end section, wherein none of the first plurality of positions at the first end section overlap with any of the second plurality of positions at the second end section. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13)
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14. A motor vehicle, comprising:
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a secondary coil to inductively receive electrical energy from a primary coil arranged outside of the motor vehicle, wherein at least one of the primary coil and the secondary coil includes first and second switchable coil taps to adjust a length of an active coil portion, the active coil portion being active for inductive energy transmission, the first and second switchable coil taps are provided respectively at first and second opposing end sections of the at least one of the primary coil and the secondary coil, a first multistage switch connects the first switchable coil tap to one of a first plurality of positions at the first end section to selectively activate a specific portion of the first end section, and a second multistage switch connects the second switchable coil tap to one of a second plurality of positions at the second end section to selectively activate a specific portion of the second end section, wherein none of the first plurality of positions at the first end section overlap with any of the second plurality of positions at the second end section. - View Dependent Claims (15, 16)
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17. An inductive transmission apparatus to inductively supply electric energy to a secondary coil mounted in a motor vehicle transversely with respect to a longitudinal axis of the motor vehicle, the apparatus comprising:
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a primary coil mounted in a stationary unit at a parking space for the motor vehicle, the primary coil being supplied with electrical energy, the primary coil having first and second opposing end sections; first and second switchable coil taps provided respectively at the first and second opposing end sections, to adjust a length of an active coil portion, the active coil portion being active for inductive energy transmission; a first multistage switch which connects the first switchable coil tap to one of a first plurality of positions at the first end section to selectively activate a specific portion of the first end section, and a second multistage switch which connects the second switchable coil tap to one of a second plurality of positions at the second end section to selectively activate a specific portion of the second end section; and a control device to control the first and second multistage switches to switch the first and second switchable coil taps and match a location of the active coil portion with a location of the secondary coil, wherein none of the first plurality of positions at the first end section overlap with any of the second plurality of positions at the second end section. - View Dependent Claims (18, 19)
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Specification