Apparatus for cooling an electric propulsion engine
AssigneeDr. Ing. h.c. F. Porsche Aktiengesellschaft
InventorTobias Engelhardt
Life of this patent
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Abstract
An apparatus for cooling an electric propulsion engine for an object, including a stator having a stator housing and a rotor, which is supported in a rotationally movable manner on the stator housing and is connected to a propulsion means for generating a force acting on the object, by a first coolant and a second coolant. The propulsion means generates a flow of the first coolant by rotational motion. The first coolant flows around or through the electric propulsion engine with aid of a flow guide, wherein the second coolant circulates in a cooling channel and transfers uptaken heat to the first coolant. The second coolant is circulated in the cooling channel with aid of a pump driven by the propulsion engine.
Claims19
An apparatus for cooling an electric propulsion engine for an object, comprising:
- a stator having a stator housing;
- and
- a rotor, which is supported in a rotationally movable manner on the stator housing and is connected to a propulsion means for generating a force acting on the object, by a first coolant and a second coolant,
- wherein the propulsion means generates a flow of the first coolant by rotational motion,
- wherein the first coolant flows around or through the electric propulsion engine with aid of a flow guide, wherein the second coolant circulates in a cooling channel and transfers uptaken heat to the first coolant, and
- wherein the second coolant is circulated in the cooling channel with aid of a pump driven by the propulsion engine.
An apparatus for cooling an electric propulsion engine for an object, comprising:
- a stator having a stator housing;
- and
- a rotor, which is supported in a rotationally movable manner on the stator housing and is connected to a propulsion means for generating a force acting on the object, by a first coolant and a second coolant,
- wherein the propulsion means generates a flow of the first coolant by rotational motion, wherein the first coolant flows around or through the electric propulsion engine with aid of a flow guide,
- wherein the flow guide directs the flow of the first coolant generated by the propulsion means in a targeted manner through the stator housing to the components to be cooled,
- wherein the second coolant circulates in a cooling channel and transfers uptaken heat to the first coolant,
- wherein the second coolant is circulated in the cooling channel with aid of a pump driven by the propulsion engine, and
- wherein the stator housing is arranged in the flow of the first coolant such that a thermal loss transported in the second coolant through the stator housing is output to the first coolant via a surface of the stator housing.
An apparatus for conveying persons or objects, the apparatus comprising:
- a base body;
- an electric motor, the electric motor comprising:
- a stator having a stator housing coupled to the base body;
- and
- a rotor, which is supported in a rotationally movable manner by the stator housing and comprises a rotor carrier coupled to a rotor shaft, the stator housing at least partially radially enclosing the rotor carrier;
- a propeller coupled to an axially external end of the rotor shaft, the propeller being configured to be rotationally driven by the electric motor to a generate a propulsive force for moving the apparatus and to generate a flow of a fluid directed at the stator housing;
- and
- a pump connected to the rotor shaft and arranged coaxially the rotor shaft such that it is configured to be directly driven by the rotor shaft,
- wherein the fluid is configured to be directed through the stator housing to components to be cooled by a flow guide, the flow guide comprising:
- a fluid impermeable housing wall portion of the stator housing;
- an opening between the stator housing and the rotor carrier configured to allow the fluid to flow into or out of the electric motor at predetermined positions;
- or a blade or compressor geometry feature of the electric motor configured to accelerate or compress the fluid in conjunction with the rotational movement of the rotor, and
- wherein the pump is configured to circulate a coolant in a cooling channel, which is arranged proximate to a wall of electric motor, such that the coolant transfers uptaken heat to the fluid via the wall.
Dependencies are inferred from the claim text.