Transmitter coils for contactless energy transmission systems with coupling enhancement and stray field reduction
First Claim
1. A transmitter coil for a contactless energy transmission system comprising a winding with a number of turns of at least one conductor, which occupies a ring area between an outer larger unequilateral rectangle and an inner smaller unequilateral rectangle, wherein the ring area is wider on a longer side (x1) of the outer rectangle than on a shorter side (x2) thereof.
1 Assignment
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Accused Products
Abstract
Transmitter coils (1, 1a . . . 1f) for contactless energy transmission systems (8) include a winding (2) with a number of turns of at least one conductor. Such winding (2) occupies ring area (3) between an outer larger unequilateral rectangle (4) and an inner smaller unequilateral rectangle (5). This ring area (3) is wider on the longer side (x1) of the outer rectangle (4) than it is on shorter side (x2). Transmitters (6) with such transmitter coils (1, 1a . . . 1f) may include a number of conductors and a number of power supplies (7, 7a, 7b) that may be switched and/or controlled independently of each other. Energy transmission systems (8) with such transmitter coils (1a . . . 1f)/such transmitters (6) as well as receiver coils (10) installed in motor vehicles (9), are also disclosed.
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Citations
19 Claims
- 1. A transmitter coil for a contactless energy transmission system comprising a winding with a number of turns of at least one conductor, which occupies a ring area between an outer larger unequilateral rectangle and an inner smaller unequilateral rectangle, wherein the ring area is wider on a longer side (x1) of the outer rectangle than on a shorter side (x2) thereof.
- 16. A transmitter of an energy transmission system including a transmitter coil for a contactless energy transmission system, said transmitter coil comprising a winding with a number of turns of a plurality of conductors, which occupy a ring area between an outer larger unequilateral rectangle and an inner smaller unequilateral rectangle, wherein the ring area is wider on a longer side (x1) of the outer rectangle than on a shorter side (x2) thereof, wherein the conductors of the winding are connected to several different power supplies which are configured to be, at least one of, switched and controlled independently of one another.
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19. A transmitter of an energy transmission system including a transmitter coil for a contactless energy transmission system, said transmitter coil comprising:
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a winding with a number of turns of a plurality of conductors, which occupy a ring area between an outer larger unequilateral rectangle and an inner smaller unequilateral rectangle, wherein the ring area is wider on a longer side (x1) of the outer rectangle than on a shorter side (x2) thereof, wherein the conductors of the winding are connected to several different power supplies which are configured to be, at least one of, switched and controlled independently of one another; a receiver coil; the transmitter coil and the receiver coil being configured to be installed in a motor vehicle so as to enable the transmitter coil to charge a battery in the motor vehicle; the conductors of the winding being twisted against each other by 90°
respectively, in corners of the ring area; andthe conductors of the winding, in each corner of the ring area, being twisted in one of, alternate directions of rotation, or the same direction of rotation, respectively.
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Specification