Primary Unit Comprising a Plurality of Coil Sections for Inductive Charging
AssigneeBayerische Motoren Werke Aktiengesellschaft
InventorJosef KRAMMER
Life of this patent
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Abstract
A primary unit is provided for producing an electromagnetic charging field for inductive coupling to a secondary coil. The primary unit has a multi-part primary coil, which includes N coil sections, with N>2, which are coupled to each other on a first end in the shape of a star. Moreover, the primary unit has N half-bridges, which are each coupled to a second end of the N coil sections. In addition, the primary unit has a control unit, which is configured to control the N half-bridges in relation to the secondary coil.
Claims17
A primary unit for generating an electromagnetic charging field for inductive coupling to a secondary coil, the primary unit comprising:
- a multipartite primary coil, which comprises N coil elements, where N>2, which are coupled to one another in star at a respective first end;
- N half-bridges, which in each case are coupled to a respective second end of the N coil elements;
- and
- a control unit, which is configured to drive the N half-bridges depending on the secondary coil.
Dependencies are inferred from the claim text.