The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Dec. 04, 2018
Filed:
Nov. 27, 2015
Hitachi Rail Italy S.p.a., Naples, IT;
Luigi Fratelli, Naples, IT;
Vincenzo Improta, Naples, IT;
HITACHI RAIL ITALY S.p.A., Naples, IT;
Abstract
An auxiliary power supply system for an electric motor of an electric vehicle, comprising supercapacitors to generate a first auxiliary power supply, batteries to generate a second auxiliary power supply, one single common bidirectional converter and a control logic, which is configured for: (i) supplying power to the electric motor by means of network power supply voltage and through the energy stored in the supercapacitors during the acceleration of the electric vehicle; (ii) charging the supercapacitors during the braking of the electric vehicle, harvesting kinetic energy; (iii) supplying power to the electric motor through the sole energy of the batteries in the absence of the network power supply voltage; and (iv) charging the batteries during the running at constant speed and the parking of the electric vehicle.