Nissan Motor Company Limited

Renault S.a.s.

Ampere S.a.s.

Julien Borie

Bassel Assaad

Alain Carbon

Fabrice Bernardin

Nelson Brandao

Fabrice Boisadan

Timothée Bladier

Karim Mikati

Jean-Marie Salondy

Nicolas Allart

An electric machine for an electric or hybrid motor vehicle includes a cooling system suitable for spraying a dielectric heat transfer fluid onto active parts of the machine and a reservoir for collecting, by gravity, the fluid flowing through an orifice in a wall separating the active parts and the reservoir. The machine also includes, at the orifice, a flap attached to the wall and suitable for closing the orifice, a resilient device to open the flap under the effect of gravity on the liquid, and a non-return device to hold the flap closed when a force exerted on the fluid in the reservoir brings the liquid against the flap.

Electric machine cooled by a dielectric heat transfer fluid

A device cools a power train of a vehicle including an electric machine with a wound rotor coupled to a speed reducer. The device includes: an oil cooling circuit for cooling the electric machine, the circuit include a heat exchanger connected to an oil tank and a water circuit that connects members of the power train through the radiator of the vehicle; a temperature adjuster of the oil flow supplied at the outlet of the exchanger to a distribution circuit projecting the oil to elements for heating the electric machine; a circuit for lubricating the reducer, the circuit including a sump, the bottom of the sump forming a reserve of oil for lubricating the reducer; and a bypass channel at the outlet of the exchanger, for conveying a portion of the temperature-adjusted oil in contact with the bottom of the sump in order to cool the oil reserve.

Device for cooling and lubricating an electric power train of an electric or hybrid motor vehicle

Growing community of inventors

Guyancourt, France

Julien Borie