Abstract: A method for wirelessly transmitting electric energy to an energy receiving device using at least one energy transmitting device, in particular an induction transmission device. The method includes wirelessly transmitting electric energy to the energy receiving device via at least one voltage signal using at least one resonant circuit of the at least one energy transmitting device, and pausing the transmission of the at least one voltage signal, in particular at regular intervals, in order to detect foreign bodies and/or for communication between the at least one energy transmitting device and the energy receiving device and/or an external unit.

Abstract: The disclosure relates to a charging apparatus for a rechargeable battery pack, having a housing, having at least one first rechargeable battery interface that is designed so as to releasably connect the charging apparatus to a first rechargeable battery pack along a first connection direction, having a second rechargeable battery interface that is designed so as to releasably connect the charging apparatus to a second rechargeable battery pack along a second connection direction, wherein the connection directions intersect the rechargeable battery pack in the state connected to the charging apparatus. It is proposed that the first connection direction and the second connection direction are arranged crossing each other.

Abstract: A battery device, which has a battery cell unit and at least one induction interface and, in at least one reception operating state, is configured to receive electrical energy by induction for charging the battery cell unit. The battery device includes at least one electrical load, which is activate-able above a defined state of charge of the battery cell unit.

Abstract: A battery device, which has a battery cell unit and at least one induction interface and, in at least one reception operating state, is configured to receive electrical energy by induction for charging the battery cell unit. The battery device includes at least one electrical load, which is activate-able above a defined state of charge of the battery cell unit.

Abstract: A battery device, which has a battery cell unit and at least one inductive charging unit for charging the battery cell unit; the inductive charging unit including at least one inductive charging coil having at least one base winding. The inductive charging coil has at least one secondary winding, whose winding axis runs at least substantially perpendicularly to a winding axis of the base winding.

Abstract: A user interface device, in particular, for a handheld power tool, including at least one input unit, which is intended for at least inputting at least one mechanically processible and/or processed information item, and/or including at least one output unit, which is intended at least for outputting a mechanically processible and/or processed information item. The user interface device has at least one power transmission unit, which is intended for wirelessly transmitting power of at least a separate energy storage unit and/or for operating a separate, electrically operable device.

Abstract: A method is provided for a wireless, in particular inductive, energy transmission from an energy transmission device to a consumer, and in at least one method task, an interruption of the energy transmission from the energy transmission device to the consumer takes place in conjunction with a foreign object detection. The method provides that a cycle time of the method, and/or a duration and/or frequency of the foreign object detection is/are adapted in at least one method task as a function of a characteristic energy transmission variable of the wireless energy transmission.

Abstract: A method for operating an inductive charging device, in which a foreign object detection is carried out in at least one method step. It is provided that in at least one method step, the foreign object detection is carried out as a function of at least one characteristic power transmission variable.

Abstract: An induction charging device and a method for inductively transmitting energy to an induction rechargeable battery device, with at least one primary oscillating circuit that includes at least one charging coil, and with a control/regulation unit for controlling the primary oscillating circuit with an inverter circuit. An excitation frequency of an output signal of the inverter circuit made up of half-waves essentially corresponds to a resonant frequency of the primary oscillating circuit. The induction charging device provides that, for reducing a charging current, the control/regulation unit, after an end-of-charge voltage of the induction rechargeable battery device is reached, controls the inverter circuit so that the output signal periodically sets at least one first half-wave to a high value, and an odd plurality of successive half-waves is then immediately set to a value that is low compared to the high value.

Abstract: A method for foreign object detection for an induction charging device is described, including an oscillator circuit, in particular, for a hand-held power tool, a resonance frequency and an associated actual quality of the oscillator circuit being detected and the actual quality is subsequently compared to a setpoint quality as a function of the resonance frequency and a decision is made about the presence of a foreign object based on a defined setpoint quality range. The method provides that an internal temperature of induction charging device is detected, in particular, during the wireless energy transmission, and the actual quality is multiplied by a correction factor based on the internal temperature. Also, an induction charging device is described that includes an oscillator circuit and a control and regulating unit, as well as at least one temperature sensor for carrying out the method.

Abstract: A method for foreign object detection for an induction charging device is described, including an oscillator circuit, in particular, for a hand-held power tool, a resonance frequency and an associated actual quality of the oscillator circuit being detected and the actual quality is subsequently compared to a setpoint quality as a function of the resonance frequency and a decision is made about the presence of a foreign object based on a defined setpoint quality range. The method provides that an upper limit and/or a lower limit of the setpoint quality range and the profile of the actual quality are adapted to one another. Also described is an induction charging device including an oscillator circuit and a control and regulating unit for carrying out the method.

Abstract: An inductive energy transmission system including: a primary coil connectible to an electrical useful voltage source, the primary coil being connected to a first capacitor, the first capacitor being connected to a local ground potential of the energy transmission system; and a secondary coil inductively coupled to the primary coil; wherein a second capacitor is situated between the primary coil and the local ground potential of the energy transmission system.

Abstract: A handheld power tool charging device for energy stores of handheld power tools, provided for a wireless energy transmission, having a first charging region and a first detection unit for a detection of a foreign body in the first charging region, and having at least one additional charging region, and at least one additional detection unit for a detection of a foreign body in the at least one additional charging region. The detection units are at least partly coordinated with one another.

Abstract: A method for producing an electrical oscillating circuit for an inductive charging device, having at least one oscillating circuit component. In a method step, the at least one oscillating circuit component is classified as a function of a structurally caused deviation of a characteristic value of the oscillating circuit component from a nominal value.

Abstract: An inductive charging device, in particular a handheld power tool inductive charging device, having a housing, a receptacle region for accommodating an induction accumulator, a coil unit that includes at least one core element and at least one induction coil that at least partly encloses the at least one core element, and at least one coil housing element that positions at least the coil unit relative to the receptacle region in the housing.

Abstract: An induction charging device and a method for inductively transmitting energy to an induction rechargeable battery device, with at least one primary oscillating circuit that includes at least one charging coil, and with a control/regulation unit for controlling the primary oscillating circuit with an inverter circuit. An excitation frequency of an output signal of the inverter circuit made up of half-waves essentially corresponds to a resonant frequency of the primary oscillating circuit. The induction charging device provides that, for reducing a charging current, the control/regulation unit, after an end-of-charge voltage of the induction rechargeable battery device is reached, controls the inverter circuit so that the output signal periodically sets at least one first half-wave to a high value, and an odd plurality of successive half-waves is then immediately set to a value that is low compared to the high value.

Abstract: An induction charging device, in particular, a hand-held power tool induction charging device, including a coil unit and at least one shielding unit, which is for at least partially shielding the coil unit. It is provided that the induction charging device includes at least one adjustment unit, with the aid of which at least one shielding parameter of the at least one shielding unit is changeable.

Abstract: A method for foreign object detection for an induction charging device is described, including an oscillator circuit, in particular, for a hand-held power tool, a resonance frequency and an associated actual quality of the oscillator circuit being detected and the actual quality is subsequently compared to a setpoint quality as a function of the resonance frequency and a decision is made about the presence of a foreign object based on a defined setpoint quality range. The method provides that an internal temperature of induction charging device is detected, in particular, during the wireless energy transmission, and the actual quality is multiplied by a correction factor based on the internal temperature. Also, an induction charging device is described that includes an oscillator circuit and a control and regulating unit, as well as at least one temperature sensor for carrying out the method.

Abstract: A method for foreign object detection for an induction charging device is described, including an oscillator circuit, in particular, for a hand-held power tool, a resonance frequency and an associated actual quality of the oscillator circuit being detected and the actual quality is subsequently compared to a setpoint quality as a function of the resonance frequency and a decision is made about the presence of a foreign object based on a defined setpoint quality range. The method provides that an upper limit and/or a lower limit of the setpoint quality range and the profile of the actual quality are adapted to one another. Also described is an induction charging device including an oscillator circuit and a control and regulating unit for carrying out the method.

Abstract: An inductive energy transmission system including: a primary coil connectible to an electrical useful voltage source, the primary coil being connected to a first capacitor, the first capacitor being connected to a local ground potential of the energy transmission system; and a secondary coil inductively coupled to the primary coil; wherein a second capacitor is situated between the primary coil and the local ground potential of the energy transmission system.