Invention Grant
- Patent Title: Method for overtemperature protection and audio apparatus
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Application No.: US16617030Application Date: 2018-04-11
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Publication No.: US11146221B2Publication Date: 2021-10-12
- Inventor: Fabian Hoffmeister , Gregor Sauer , Josef Plager , Patrick Engl , Thomas Stein
- Applicant: Robert Bosch GmbH
- Applicant Address: DE Stuttgart
- Assignee: Robert Bosch GmbH
- Current Assignee: Robert Bosch GmbH
- Current Assignee Address: DE Stuttgart
- Agency: Michael Best & Friedrich LLP
- Priority: DE102017209072.3 20170530
- International Application: PCT/EP2018/059281 WO 20180411
- International Announcement: WO2018/219542 WO 20181206
- Main IPC: H03F1/52
- IPC: H03F1/52 ; H03F3/181 ; H03G7/00 ; H04R3/00

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 protected from the exceedance of a maximum internal temperature (TI), contains a protection module (8) for carrying out the method according to the invention.
Public/Granted literature
- US20200091873A1 METHOD FOR OVERTEMPERATURE PROTECTION AND AUDIO APPARATUS Public/Granted day:2020-03-19
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