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US 2014/0180612 A1Published application
Inductive charging device
AssigneeRobert Bosch GmbH
InventorsMarcin REJMAN, Guenter LOHR, Juergen MACK, Dragan KRUPEZEVIC
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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.
Claims9
An inductive charging device for a handheld machine tool storage battery device, comprising:
- a primary inductive charging unit;
- and
- at least one foreign-object detection unit which includes (i) at least one operating time counter and (ii) at least one compensating unit provided to at least one of set, adapt and calculate at least one foreign-object detection parameter of the foreign-object detection unit as a function of an operating time.
A method for detecting a foreign object, comprising:
- providing a foreign-object detection unit of an inductive charging device, the inductive charging device including an electronic charging unit which has at least one oscillator circuit for direct energy transmission, wherein foreign-object detection unit which includes (i) at least one operating time counter and (ii) at least one compensating unit provided to at least one of set, adapt and calculate at least one foreign-object detection parameter of the foreign-object detection unit as a function of an operating time;
- and
- comparing a quality differential ΔQI, which represents a difference between a setpoint quality QS and an actual quality QI of the oscillator circuit, with a predefined permissible quality differential ΔQS.
A battery system, comprising:
- a storage battery device;
- and
- an inductive charging device for the storage battery device, the inductive charging device including:
- a primary inductive charging unit, wherein the primary inductive charging unit has an electronic charging unit which includes at least one oscillator circuit for direct energy transmission;
- and
- at least one foreign-object detection unit which includes (i) at least one operating time counter and (ii) at least one compensating unit provided to at least one of set, adapt and calculate at least one foreign-object detection parameter of the foreign-object detection unit as a function of an operating time.
3 more elements
Dependencies are inferred from the claim text.