Patent · US Active

Brushless electrical machine

US11901781B2 · kind B2 · utility

0Cited by

1References

11Claims

0Family size

Assignee

Robert Bosch GmbH · DE

Inventors

Christian Binder · Friolzheim, DE
Oliver Fuchs · Offenbach am Main, DE

Key dates

Filing date	Dec 18, 2018
Grant date	Feb 13, 2024
Priority date	—
Expiry date	Feb 5, 2040

Classification

Technology area (CPC H)Electricity
CPC primaryH02P2203/03
WIPO fieldElectrical machinery, apparatus, energy
WIPO sectorElectrical engineering

Abstract

A brushless electrical machine, in particular, a brushless d.c. motor, having a housing, at least one rotor, which is positioned on a shaft rotationally mounted in the housing, and a stator attached to the housing; the rotor being assigned a rotor position detection device, which operates contactlessly and includes a multipole magnetic ring positioned on the shaft in a rotatably fixed manner and at least one sensor, which is sensitive to magnetic fields and is attached to the housing radially with respect to the outer circumference of the magnetic ring. The number of pole pairs of the rotor and the number of pole pairs of the magnetic ring are coprime.

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