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US 9,425,639 B2Granted
Inductive charging device and control method
AssigneeRobert Bosch GmbH
InventorAlexander Osswald
Life of this patent
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Abstract
A charging device for a rechargeable energy store which has a first induction coil includes: a coupling surface for positioning the first energy store; a second induction coil for generating a magnetic field in the area of the coupling surface to transfer electrical energy between the first and second induction coils; and a direction control system for bringing an alignment of the field of the second induction coil in line with an alignment of the first induction coil.
Claims8
A charging device for a rechargeable energy store which has a first induction coil, comprising:
- a contact surface for positioning the energy store;
- a second induction coil for generating a magnetic field in the area of the contact surface to transmit electrical energy between the first and second induction coils;
- and
- a direction control system for bringing the magnetic field of the second induction coil in alignment with the first induction coil,
- wherein the direction control system includes multiple differently aligned subcoils which are configured to generate magnetic subfields, and wherein the magnetic subfields are superimposed to form the magnetic field of the second induction coil in the area of the contact surface.
2 more elements
Dependencies are inferred from the claim text.