Energy storage system for powering vehicle electric user devices
AssigneesMagneti Marelli Powertrain S.p.A., Ente per Le Nuove Tecnologie, L'Energia E L'Anbiente-ENEA
InventorsAngelo Puccetti, Michele Pennese
Life of this patent
Estimating the term…
Abstract
An energy storage system for powering electric user devices of a vehicle, the energy storage system having a battery; a capacitive element connected parallel to the terminals of the battery; and an inductive element connected in series to the battery, between the battery and the capacitive element; to effectively regulate power/energy flow between the battery and the capacitive element during transients, the ratio between the capacity of the battery measured in (Ah) and the capacitance of the capacitive element measured in (F) is less than 1, and the ratio between the capacity of the battery measured in (Ah) and the inductance of the inductive element measured in (μH) is less than 1.
Claims13
A power train for a hybrid vehicle comprising:
- an internal combustion engine having a drive shaft;
- a transmission having an input shaft connected mechanically the drive shaft of the internal combustion engine and an output shaft connected mechanically to drive wheels;
- an alternating-current reversible electric machine which may operate as both an electric motor and an electric generator and can exchange mechanical power with the drive shaft of the internal combustion engine and with the drive wheels;
- a direct-current energy storage system;
- a two-way electronic converter connecting electrically the reversible electric machine to the energy storage system and allowing reversible electric machine to operate in generator mode and motor mode;
- wherein the direct-current energy storage system comprises:
- a battery, a capacitive element connected in parallel to terminals of the battery, and an inductive element connected in series to the battery, between the battery and the capacitive element;
- and
- wherein to effectively regulate power/energy flow between the battery and the capacitive element during charge or discharge transients of the battery:
- the quotient of the capacity of the battery measured in Ampere-hour Ah divided by the capacitance of the capacitive element measured in Farad F is less than 1;
- and quotient of the capacity of the battery measured in Ah divided by the inductance of the inductive element measured in microHenry μH is less than 1.
Dependencies are inferred from the claim text.