Patent · US Active

Primary unit comprising a plurality of coil sections for inductive charging

US10576831B2 · kind B2 · utility

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0References

17Claims

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Assignee

Bayerische Motoren Werke Aktiengesellschaft · DE

Inventor

Josef Krammer · Holzkirchen, DE

Key dates

Filing date	Jun 15, 2017
Grant date	Mar 3, 2020
Priority date	—
Expiry date	Oct 14, 2037

Classification

Technology area (CPC Y)Emerging Cross-Sectional Technologies
CPC primaryY02T90/14
WIPO fieldElectrical machinery, apparatus, energy
WIPO sectorElectrical engineering

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.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.