Automotive electric oil pump

An automotive electric oil pump comprising:

• a static pump housing which defines a pumping chamber and a motor chamber, the pumping chamber and the motor chamber being fluidically connected to each other;
• an electric drive motor which is arranged within the motor chamber, the electric drive motor comprising a motor stator and a motor rotor, the motor stator comprising a plurality of stator coils;
• a rotatable pump wheel which is configured to pump oil through the pumping chamber, wherein a partial volume of the oil within the pumping chamber thereby flows through the motor chamber;
• a control module which is configured to energize the plurality of stator coils in a cold-start phase if a temperature of the oil within the motor chamber is below a defined temperature value and to inhibit a rotation of the motor rotor;
• a heat transfer wall which fluidically separates an electronics chamber from the motor chamber;
• and
• a temperature sensor which is configured to measure a temperature of the oil within the static pump housing, the temperature sensor being arranged embedded within the heat transfer wall,
• wherein,
• the motor stator is in a direct contact with the oil.

An automotive electric oil pump comprising:

• a static pump housing which defines a pumping chamber and a motor chamber, the pumping chamber and the motor chamber being fluidically connected to each other;
• an electric drive motor which is arranged within the motor chamber, the electric drive motor comprising a motor stator and a motor rotor, the motor stator comprising a plurality of stator coils;
• a rotatable pump wheel which is configured to pump oil through the pumping chamber, wherein a partial volume of the oil within the pumping chamber thereby flows through the motor chamber;
• a control module which is configured to energize the plurality of stator coils in a cold-start phase if a temperature of the oil within the motor chamber is below a defined temperature value and to inhibit a rotation of the motor rotor;
• an electronics chamber which is arranged within the static pump housing;
• a heat transfer wall which fluidically separates the electronics chamber from the motor chamber;
• and
• a printed circuit board comprising a plurality of power electronic components, the printed circuit board being arranged directly on and in an inner heat transferring contact with the heat transfer wall,
• wherein,
• the motor stator is in a direct contact with the oil.