Abstract: A state of health of a battery cell used in a hearing instrument is ascertained. For each of a plurality of charging cycles, a battery manager of the hearing instrument ascertains a charge transferred to the battery cell and a number of charging characteristic values that provides information about the change in a state of charge of the battery cell brought about by the charge. Based on the transferred charge and the charging characteristic values a capacity characteristic value is ascertained that forms a characteristic variable for a present charging capability of the battery cell. A signal processor averages respective capacity characteristic values of at least some past charging cycles at a specific time and calculates an averaged charging capacity. The averaged charging capacity is compared with a reference value representing an original capacity of the battery cell to determine the state of health of the battery cell.

Abstract: A method includes connecting a device to a charger and providing wireless charging in a state of charge by transferring energy wirelessly from a transmitter module of the charger to a reception module of the device. The device has a state of discharge in which energy is consumed. The device includes a charging connector, to which a charging input voltage adjustable by the charger is applied for charging. The device includes a switching connector for turning the device on and off. The device includes a switch connected to the switching connector and being switchable by the charging input voltage by setting the charging input voltage to an intermediate voltage. The charger sets the charging input voltage to the intermediate voltage for switching the switch and transitioning the device into an off state with the device turned off. A corresponding device and charger are also provided.

Abstract: A method operates a hearing device, in particular a hearing aid device, which contains an inductive charging unit that has a receiving coil, and a battery that is electrically connected via a communication unit to the charging unit. An electric voltage applied at the receiving coil is changed by the communication unit in dependence on data to be transferred to the charging unit. Furthermore, a hearing device and a hearing device system incorporate the operating method.

Abstract: A battery module for a hearing device is configured for an inductive resonance charging method. The battery module includes a secondary cell and a blocking sleeve that encloses the secondary cell to shield the secondary cell against a magnetic field. A jacket formed from permeable material is arranged on the outside of the blocking sleeve. An induction coil, which is arranged on the outside of the jacket, is configured to receive energy inductively. The induction coil and the jacket form a receiving antenna for receiving energy. The induction coil is arranged such that a coil axis of the induction coil is oriented radially with respect to the secondary cell.

Abstract: An electronic device has a temperature reduction configuration and a technique for wireless charging. The electronic device has a rechargeable battery, a receiver circuit for wirelessly receiving energy from a charger and transforming the received energy into a charging current for charging the battery, and a power management circuit for regulating the level of the charging current. The power management circuit is arranged on a printed circuit board of the electronic device so that it faces away from the battery. Furthermore, an inductive charging system is provided that contains the electronic device as described above and a charger for wirelessly charging the battery of the electronic device.

Abstract: A hearing device has a motherboard and a receiver module. The receiver module is configured for wireless charging of a battery and, for that purpose, has a coil wound around an axial direction. The motherboard has a top section that extends perpendicular to the axial direction and in a radial direction. The top section of the motherboard and the receiver module are stacked in the axial direction.

Abstract: A battery coil module, in particular for a hearing instrument, contains two battery polarity terminals for contacting the battery poles of a secondary battery, a fuse, a ferrite element, a receiver coil, a resonance capacitor and a temperature sensor for sensing the temperature close to the secondary battery and a module ring. In addition, the battery coil module can be used in a hearing instrument.

Abstract: A hearing device has a battery module. The battery module has a secondary cell and a reception coil for contactless charging of the secondary cell. The battery module has a circuit board with a conductor track which forms the reception coil. The circuit board contains a plurality of layers. The conductor track extends over the plurality of layers while containing a conductor loop, which has at least one turn, in each of the plurality of layer. A corresponding circuit board is furthermore specified.

Abstract: A charging coil for a hearing aid charger for magnetic resonance charging of a hearing aid. The charging coil has a printed circuit board coil and a frame shaped ferrite tile with a central opening for receiving and securing the hearing aid. The printed circuit board coil is arranged on the frame shaped ferrite tile.

Abstract: A battery module for a hearing device includes a secondary cell and two contact elements for making contact with the secondary cell at two different potential areas. A fuse which is arranged at a short distance from the contact element that is assigned to a positive potential. A copper jacket surrounds the secondary cell, and a ferrite jacket is arranged on the outside of the copper jacket. An induction coil is arranged on the outside of the ferrite jacket and is configured to inductively receive energy for charging the battery module. A resonant capacitor is coupled to the induction coil at a short distance from the latter. A thermistor for monitoring a cell temperature is arranged with electrical insulation from the secondary cell but is coupled to the latter with low thermal resistance using heat-transfer capability.

Abstract: A method includes connecting a device to a charger and providing wireless charging in a state of charge by transferring energy wirelessly from a transmitter module of the charger to a reception module of the device. The device has a state of discharge in which energy is consumed. The device includes a charging connector, to which a charging input voltage adjustable by the charger is applied for charging. The device includes a switching connector for turning the device on and off. The device includes a switch connected to the switching connector and being switchable by the charging input voltage by setting the charging input voltage to an intermediate voltage. The charger sets the charging input voltage to the intermediate voltage for switching the switch and transitioning the device into an off state with the device turned off. A corresponding device and charger are also provided.

Abstract: A method for initializing a long-term-storage mode for a hearing instrument having a rechargeable battery cell includes predetermining an upper limiting value of a parameter for a state of charge of the rechargeable battery cell for long-term storage of the hearing instrument. An actual value, actually present, of the parameter for the state of charge is measured within an activation routine for long-term storage. The measured actual value of the parameter for the state of charge is compared with the upper limiting value of the parameter for the state of charge, and if the measured actual value of the parameter lies above the upper limiting value, the battery cell is discharged at least until the parameter has reached the predetermined upper limiting value, and the hearing instrument is placed into a long-term-storage mode. A hearing instrument is also provided.

Abstract: A battery module for a hearing device is configured for inductive resonance charging. The battery module has a secondary cell, a blocking sleeve that encloses the secondary cell and shields the secondary cell against a magnetic field, a jacket formed from permeable material outside the blocking sleeve, and an induction coil outside the jacket for receiving energy inductively. The induction coil and the jacket form a receiving antenna for receiving the energy. The material and/or the geometric structure of the blocking sleeve, the jacket made of permeable material, and/or the induction coil is/are additionally selected in such a way that the battery module, in particular the induction coil, has a quality factor of at least 35 for receiving energy at a predetermined value of a charging frequency that is employed by a charging device that generates a magnetic alternating field.

Abstract: A hearing device has a battery module. The battery module has a secondary cell and a reception coil for contactless charging of the secondary cell. The battery module has a circuit board with a conductor track which forms the reception coil. The circuit board contains a plurality of layers. The conductor track extends over the plurality of layers while containing a conductor loop, which has at least one turn, in each of the plurality of layer. A corresponding circuit board is furthermore specified.

Abstract: A battery module for a hearing device is configured for inductive resonance charging. The battery module has a secondary cell, a blocking sleeve that encloses the secondary cell and shields the secondary cell against a magnetic field, a jacket formed from permeable material outside the blocking sleeve, and an induction coil outside the jacket for receiving energy inductively. The induction coil and the jacket form a receiving antenna for receiving the energy. The material and/or the geometric structure of the blocking sleeve, the jacket made of permeable material, and/or the induction coil is/are additionally selected in such a way that the battery module, in particular the induction coil, has a quality factor of at least 35 for receiving energy at a predetermined value of a charging frequency that is employed by a charging device that generates a magnetic alternating field.

Abstract: A battery module for a hearing device includes a secondary cell and two contact elements for making contact with the secondary cell at two different potential areas. A fuse which is arranged at a short distance from the contact element that is assigned to a positive potential. A copper jacket surrounds the secondary cell, and a ferrite jacket is arranged on the outside of the copper jacket. An induction coil is arranged on the outside of the ferrite jacket and is configured to inductively receive energy for charging the battery module. A resonant capacitor is coupled to the induction coil at a short distance from the latter. A thermistor for monitoring a cell temperature is arranged with electrical insulation from the secondary cell but is coupled to the latter with low thermal resistance using heat-transfer capability.

Abstract: A battery module for a hearing device is configured for an inductive resonance charging method. The battery module includes a secondary cell and a blocking sleeve that encloses the secondary cell to shield the secondary cell against a magnetic field. A jacket formed from permeable material is arranged on the outside of the blocking sleeve. An induction coil, which is arranged on the outside of the jacket, is configured to receive energy inductively. The induction coil and the jacket form a receiving antenna for receiving energy. The induction coil is arranged such that a coil axis of the induction coil is oriented radially with respect to the secondary cell.