Nokia Technologies Oy

Frank Borngräber

Rune Lindholm

Petri Vuori

Matti Juhani Naskali

Heikki Sakari Paananen

Matti Naskali

It is inter alia disclosed an apparatus (), comprising a power connector () configured to be connected to a removable first rechargeable energy source and configured to supply power from the first rechargeable energy source to the apparatus via a power supply line (), a second rechargeable energy source (), a balancing element () placed between the power supply line () and the second rechargeable energy source () and configured to provide power from the power supply line () to the second rechargeable energy in a first state of the apparatus and configured to provide power from the second rechargeable energy source () to the power supply line () in a second state of the apparatus, wherein in the first state the apparatus is configured to prevent supplying power from the second rechargeable power supply () to the power supply line ().

Battery hot swap capable apparatus

It is inter alia disclosed to determining whether an object detected () based on at least one capacitance representative of at least one capacitance representative sensed by at least one capacitance sensing element () of an apparatus () corresponds to a predefined type of objects, the apparatus () further comprising a wireless charging unit (), wherein the at least one capacitance sensing element () is at least partially placed in proximity to the wireless charging unit ().

Foreign object detection

The invention relates to protecting metals and components from inductive energy. The protecting apparatus comprises an inductive energy coil (), a first shielding unit comprising an opening () around the inductive energy coil () wherein the first shielding unit () is located in parallel to inductive energy coil (); and a second shielding unit () under the inductive energy coil () so that the inductive energy coil () is enabled for electromagnetic radiation. The invention further relates to a method for producing the protecting apparatus and an electronic device comprising the protecting apparatus.

Method and shielding units for inductive energy coils

Apparatus comprises: an induction, coil () arrangement, the induction coil arrangement having a first set of at least one coil () with a first diameter and a second set of at least one coil () with a second diameter, the second diameter being different to the first diameter, a first tap (A) connected at a first end of the first set, a second tap (B) connected at connection common to a second end of the first set and a first end of the second set, and a third tap (C) connected at a second end of the second set; a power transmit arrangement () selectively connectable to a first combination of two of the first to third taps; and a power receive arrangement () selectively connectable to a second combination of two of the first to third taps, the second combination being different to the first combination.

Power transfer

Systems and techniques for parallel battery balancing are described. A battery assembly comprises a first battery interface and a second battery interface; the first battery interface may connect to a first battery exhibiting a first voltage profile and the second battery interface may connect to a second battery exhibiting a second voltage profile. The battery assembly further comprises a current flow control mechanism to direct current flow to, from, and between the first battery and the second battery, with current directed to each battery being adapted so as to be compatible with the voltage profile of the battery.

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Weissenhorn, Germany

Frank Borngräber