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 hand tool case holding device includes: a holding device housing, a case accommodating area, and at least one charging coil, which is provided for the purpose of transferring energy into the case accommodating area in a direction perpendicular to a charging surface of the holding device housing. The holding device housing has a case support surface, which is provided for the purpose of causing a support force at least essentially parallel to the charging surface.

Abstract: A hand tool case holding device includes at least one charging coil, a case accommodating area and a holding device housing, which includes a first outer side facing toward the case accommodating area. The holding device housing includes at least one second outer side, (a) which, in at least one operating state, faces toward the case accommodating area, (b) which is aligned essentially perpendicularly to the first outer side, and (c) on which the charging coil is situated.

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 switch-mode power supply includes a control element in a primary circuit for controlling a transformer for transmitting electric energy from the primary circuit to a secondary circuit, a first regulating element in the secondary circuit for regulating an electric output variable of the secondary circuit, and a second regulating element in the primary circuit for regulating an electric controlled variable of the control element as a function of a temperature of the primary circuit, the second regulating element being thermally coupled to an element of the primary circuit whose temperature is to be ascertained.

Abstract: A method is described for an inductive transmission of energy, in particular for charging an energy storage device, in which an induction unit transmits at least one synchronizing signal. It is provided that, in a synchronizing step, at least one signal characteristic of the synchronizing signal is set.

Abstract: A rechargeable handheld tool battery includes: at least one rechargeable cell; and at least one inductive charging unit that has at least one inductive charging coil for charging the at least one rechargeable cell. A diameter of the inductive charging coil is greater than a principal extension length of the at least one rechargeable cell.

Abstract: A hand tool device having at least one charging coil, which includes at least one coil core which is at least partially made of a ceramic material and which is provided for transmitting energy. The coil core may be configured as a composite component.

Abstract: An inductive charging device for a handheld machine tool storage battery device includes at least one foreign-object detection unit having at least one operating time counter and at least one compensating unit. The compensating unit sets and/or adapts at least one foreign-object detection parameter of the foreign-object detection unit as a function of an operating time t.

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 detecting foreign objects in an induction charging device, with the aid of at least one control and/or regulating unit of the induction charging device, includes: ascertaining a resonance frequency; determining an actual quality at the resonance frequency; and comparing the actual quality to a setpoint quality which is a function of a resonance frequency.

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: A switch-mode power supply includes a control element in a primary circuit for controlling a transformer for transmitting electric energy from the primary circuit to a secondary circuit, a first regulating element in the secondary circuit for regulating an electric output variable of the secondary circuit, and a second regulating element in the primary circuit for regulating an electric controlled variable of the control element as a function of a temperature of the primary circuit, the second regulating element being thermally coupled to an element of the primary circuit whose temperature is to be ascertained.

Abstract: An induction charging coil device is provided, in particular an induction charging coil device for a hand-held power tool, including at least one coil unit having at least one shielding unit, at least one core unit and at least one electronics unit and/or one cell unit to be shielded. It is provided that a projection area of the core unit, in the case of a projection in the direction of a winding axis of the coil unit, covers at least essentially the electronics unit and/or the cell unit to be shielded.

Abstract: A system having a hand tool battery, a hand tool case which has at least one inductive charge receiving area which is provided for storing a hand tool battery which is inserted into the inductive charge receiving area at least partially in close proximity to at least one wall of the hand tool case, and having at least one latent heat storage unit which is provided for influencing at least a temperature of the at least one hand tool battery.

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 hand-held power tool rechargeable battery is provided as including a housing, at least one rechargeable battery cell, and an inductive charging unit, which includes at least one coil core and an inductive charging coil for charging the at least one rechargeable battery cell. It is provided that the inductive charging unit is accommodated detachably in the housing.

Abstract: An inductive rechargeable battery charging apparatus for a vehicle, having at least one DC voltage transformer and having at least one inductive charging unit that is provided in order to supply energy by way of the DC voltage transformer, is described.

Abstract: An inductive charging unit is provided, in particular a hand-held power tool inductive charging unit, which is provided for transferring energy in a coupled state with an induction battery, including at least one charging coil and a housing which includes at least one receiving area for accommodating the induction battery in a coupled state. It is provided that the at least one receiving area has at least one recess.

Abstract: An inductive charging device is provided, in particular a hand-held power tool inductive charging device, which includes an inductive charging unit which is provided for transferring energy in a coupled state with an induction battery. It is provided that the inductive charging device includes a fastening unit which is provided, at least in part, for coupling the inductive charging unit to the at least one induction battery and/or to at least one external unit in at least one state.