Nokia Technologies Oy

Nokia Corporation

Heikki Sakari Paananen

Matti Juhani Naskali

Rune Lindholm

Juha Harri-Pekka Nurmi

Juha Nurmi

Matti Naskali

A method including controlling a wireless energy transfer apparatus to synchronize energy transfer with at least one further wireless energy transfer apparatus to wirelessly transfer energy to at least one load in combination with the at least one further wireless energy transfer apparatus.

Apparatuses, methods and computer programs for wireless energy transfer control

Improved mechanisms for automated control of harvested energy delivery are described. A device harvests and stores energy and activates a controller when a sufficient level of stored energy is achieved. The controller retrieves previous power-off state information determines status information, and activates and powers a powered device. Just before insufficient energy remains to power the powered device, the controller stores shutdown status information and enters a power-off state.

Methods and apparatus for electronic device power

A battery characteristic converter comprises an interface to a battery and to an electronic device to be powered with energy supplied by the battery. The interface to the battery and the interface to the electronic device are connected using a bidirectional voltage ratio converter. The bidirectional voltage ratio converter is controlled so that the characteristics at the interface to the electronic device are adapted to the electronic device, independently of the battery characteristics. Energy may flow to the electronic device to power the electronic device or from the electronic device to the battery to charge the battery, depending on a comparison of the characteristics at the interfaces.

Methods and apparatus for battery characteristic conversion

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.

Balancing of battery cells connected in parallel

In accordance with an example embodiment of the present invention, an apparatus, comprises an energy storage device having an interface and at least one terminal, the interface having first and second surfaces, the first surface having at least one first surface opening and the second surface having at least one second surface opening, wherein the at least one first surface opening allows access to the at least one terminal, wherein the at least one second surface opening allows access to the at least one terminal, and wherein the at least one first surface opening is distinct from the at least one second surface opening.

Growing community of inventors

Saku, Japan

Heikki Sakari Paananen