公开(公告)号：US20190277921A1

公开(公告)日：2019-09-12

申请号：US16297296

申请日：2019-03-08

Applicant: Oticon A/S

Inventor： Jess CHRISTENSEN

IPC: G01R31/3835 ,  G01R31/374 ,  G01R31/36 ,  G01R19/165 ,  H04R25/00

Abstract: The disclosure presents a method and a hearing aid with an improved method for updating a discharge charging profile of a battery. The method comprises following steps; receiving during a first discharge step of the plurality of discharge steps a first primary battery voltage from a voltage monitor unit, receiving during the first discharge step a first primary charge from a charge monitor unit or a storing unit, determining a first secondary charge, where the first secondary charge is one or more discharge steps lower than the first primary charge, determining a first secondary battery voltage difference to be equal to a secondary battery voltage difference of a plurality of secondary battery voltage differences relative to the first secondary charge, wherein the plurality of secondary battery voltage differences is stored in the storing unit, determining a first secondary battery voltage to be equal to a secondary battery voltage of the plurality of secondary battery voltages relative to the first secondary charge, determining a first primary battery voltage difference between the first secondary battery voltage and the first primary battery voltage, determining a new battery voltage difference based on a first weight of the first primary battery voltage difference and a second weight of the first secondary battery voltage difference, and updating the discharge battery profile with the new battery voltage difference.

公开(公告)号：US20220377473A1

公开(公告)日：2022-11-24

申请号：US17746496

申请日：2022-05-17

Applicant: Oticon A/S

Inventor： Ole ANDERSEN ,  Jess CHRISTENSEN ,  Martin BERGMANN ,  Andreas ROBERTSON ,  Andreas KOFOD-HANSEN

IPC: H04R25/00 ,  H02J50/10 ,  H02J7/00

Abstract: A method for wirelessly charging at least one hearing device (4) via at least one power transmission unit (14) is disclosed. The method comprises: Charging at least one power receiving and storing unit of the at least one hearing device (4) via a wireless charge field of the at least one power transmission unit (14); Turning off the at least one hearing device (4) when the at least one power receiving and storing unit of the at least one hearing device (4) is substantially fully charged; Rebooting the at least one hearing device (4) when the at least one wireless charge field is removed; and Determining the resonance frequency of a coil element of the at least one hearing device (4) after rebooting. Further, a hearing aid system is disclosed.

公开(公告)号：US20190165671A1

公开(公告)日：2019-05-30

申请号：US16201236

申请日：2018-11-27

Applicant: Oticon A/S

Inventor： Gunnar GUDNASON ,  Rasmus Glarborg JENSEN ,  Jess CHRISTENSEN ,  Kåre Tais CHRISTENSEN

IPC: H02M1/44 ,  H02M3/06 ,  H04R25/00

Abstract: The disclosure presents a method of operating a switched capacitor voltage converter and a switched capacitor voltage converter, where the switched capacitor voltage converter comprises a power source, a bucket capacitance, an output capacitance with output capacitance terminals to be connected to a load and switches. The power source provides an input voltage and the output capacitance provides an output voltage over the output capacitance terminals. The output voltage is different from the input voltage, i.e higher or lower or of opposite polarity. The switches are configured to provide at least two phases, a bucket capacitance charging phase and a bucket capacitance discharging phase. In case of a voltage up-converter in the bucket capacitance charging phase the bucket capacitance is connected to the power source for charging the bucket capacitance while the bucket capacitance is not connected to the output capacitance. In a voltage down-converter in the bucket capacitance charging phase the bucket capacitance and the output capacitance are connected in series with the power source. In a voltage up-converter in the bucket capacitance discharging phase the bucket capacitance is connected in series with the power source for charging the output capacitance. In a voltage down-converter in the bucket capacitance discharging phase the bucket capacitance and the output capacitance are connected in parallel with each other while being disconnected from the power source. Further, a detection circuit is provided that is configured to monitor the output voltage over the output capacitance terminals and to cause switching of at least one of said switches so as to interrupt charging of the output capacitance when output voltage exceeds a predefined reference voltage.