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Patent

Dual voltage electrical distribution system

Joan Fontanilles Piñas, +6 more
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TLDR
In this paper, a bidirectional voltage converter cooperates with two electrical power supply systems and corresponding differentiated voltage level charges and two batteries operating at a first and a second voltage level.
Abstract: 
The invention is designed for vehicles having two electrical power supply systems and corresponding differentiated voltage level charges and two batteries operating at a first and a second voltage level. A bidirectional voltage converter cooperates with both systems whose input and output stages are galvanically insulated and include a switch. The batteries are connected to said input and output at a first and a second voltage level so that said bidirectional converter can provide a first reduced voltage mode and a second increased voltage mode . The passive components, e.g. the magnetic components and capacitances, of said stages have been chosen to provide an identical transitional behavior in both modes when a disruption occurs in the regulating system either in the charge or the input voltage.

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Electric tool powered by a plurality of battery packs and adapter therefor

Tomoyuki Ota, +2 more
TL;DR: In this paper, an electric power tool comprises a main body supporting a tool and an electric motor housed in the main body for driving the tool, and a plurality of indicators are configured to communicate information concerning the respective conditions of the attached first battery packs, arranged such that all of the indicators are simultaneously viewable by a user.
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Locomotive power train architecture

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Power converter architecture and method for integrated fuel cell based power supplies

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References
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Patent

Device and method for supplying power to a vehicle, semi-conductor circuit device for use in the same and collective wiring device for a vehicle or an automobile

Hiroyuki Saito, +4 more
TL;DR: In this paper, a power supply line is wired in a loop from a battery power supply, and power supply relay circuit is installed intermediately of the power source line such that power is supplied from the relay circuit to an electric load connected to a terminal unit of an intensive wiring line.
Proceedings ArticleDOI

Experimental study of a bidirectional DC-DC converter for the DC link voltage control and the regenerative braking in PM motor drives devoted to electrical vehicles

Federico Caricchi, +3 more
TL;DR: In this article, the experimental study of a bidirectional DC-DC converter prototype has been designed for application in small-size EVs propelled by axial-flux PM motor drives.
Patent

Dual voltage battery for a motor vehicle

Koichiro Ozawa
TL;DR: In this article, a single dual-voltage battery capable of powering an automobile system having electrical equipment that requires different supply voltage was obtained by equipping a 12V battery with a 24-V battery of a different type and adapted to supply power to respective electrical components.
Patent

Push-pull switching power amplifier

Slobodan Cuk
TL;DR: In this paper, a push-pull switching power amplifier utilizing two dc-to-dc converters is described, where each converter is comprised of two inductances, one inductance in series with a DC source and the other inductance with the output load, with suitable switching means between the inductances to obtain DC level conversion.
Proceedings ArticleDOI

Topologies of bidirectional PWM dc-dc power converters

Marian K. Kazimierczuk, +3 more
TL;DR: In this paper, the authors proposed a bidirectional PWM dc-dc converters, which are obtained by adding an antiparallel diode to the switch and a controllable switch to a diode.