Electric machine cooled by a dielectric heat transfer fluid
AssigneesRENAULT s.a.s., Nissan Motor Co., Ltd.
InventorsAlain CARBON, Julien BORIE
Life of this patent
Estimating the term…
Abstract
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.
Claims8
1-7. (canceled)
An electric machine for an electric or hybrid motor vehicle, comprising:
- a casing that is configured to protect the active parts of said electric machine;
- a cooling system comprising means for spraying a dielectric heat transfer cooling liquid onto at least one part of said active parts, a reservoir that is configured to collect, by gravity, said cooling liquid flowing through at least one orifice of a wall separating said active parts and said reservoir,
- wherein said machine comprises, at the level of said at least one orifice, a flap fixed to said wall and configured to close off said at least one orifice, an elastic means that is configured to open said flap under the effect of the gravity of said cooling liquid, and a non-return means that is configured to keep said flap closed when a force exerted on said cooling liquid in said reservoir causes said liquid to press against said flap.
Dependencies are inferred from the claim text.