Patent · US Active

Method for overtemperature protection and audio apparatus

US11146221B2 · kind B2 · utility

0Cited by

3References

14Claims

0Family size

Assignee

Robert Bosch GmbH · DE

Inventors

Fabian Hoffmeister · Sonneberg, DE
Gregor Sauer · Rockenberg, DE
Josef Plager · Bogen, DE
Patrick Engl · Rattiszell, DE
Thomas Stein · Oberkochen, DE

Key dates

Filing date	Apr 11, 2018
Grant date	Oct 12, 2021
Priority date	—
Expiry date	Jun 7, 2038

Classification

Technology area (CPC H)Electricity
CPC primaryH03F2200/468
WIPO fieldBasic communication processes
WIPO sectorElectrical engineering

Abstract

The invention relates to a method for protecting a component (6) within an audio device (4) from the exceedance of a maximum internal temperature (TI), wherein a power loss (V) of the component (6) is determined, a measurement temperature (TM) is measured on the component (6), a temperature difference (DT) for the component (6) between the measurement temperature (TM) on the component and the internal temperature (TI) is determined from the power loss (V) by means of a thermal model (14) of the component (6), the internal temperature (TI) is determined as the sum of the measurement temperature (TM) and the temperature difference (DT), a permissible maximum value (VM) for the power loss (V) is determined on the basis of the internal temperature (TM) and known component data (16) of the component (6), and the component (6) is operated in a normal operating mode (N) if the power loss (V) does not exceed the maximum value (VM) or the component (6) is otherwise operated in reduced-power economy operating mode (S) such that the power loss (V) is limited to the maximum value (VM). An audio apparatus (2), having an audio device (4) that internally contains a component (6) that should be pr…

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