Electric drive assembly and electric device
AssigneesContemporary Amperex Intelligence Technology (Shanghai) Limited, Contemporary Amperex Technology Co., Limited
InventorsJunhui Zhang, Ji Xia
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Abstract
Disclosed are an electric drive assembly and an electric device. The electric drive assembly includes a motor, a speed shifting mechanism connected to the motor, and a cooling system configured to supply lubricating oil to the motor and the speed shifting mechanism in sequence. With the cooling system provided, lubricating oil is sequentially supplied to the motor and the speed shifting mechanism, reducing the loss of the cooling capacity of lubricating oil in the speed shifting mechanism, improving the cooling efficiency and the utilization rate of the cooling capacity, and reducing the loss.
Claims14
An electric drive assembly, comprising:
- two motors axially spaced apart from each other, each of the two motors comprising a stator oil passage configured to cool a stator of the motor using lubricating oil and a rotor oil passage configured to cool a rotor of the motor using the lubricating oil;
- two speed shifting mechanisms respectively connected to the two motors, at least part of the two speed shifting mechanisms being located between the two motors;
- two oil supply passages configured to supply the lubricating oil to the two stator oil passages, respectively;
- a flow diverting mechanism connected to the two stator oil passages and configured to deliver a part of the lubricating oil flowing out of each of the stator oil passages to the speed shifting mechanisms;
- and
- a flow guiding structure connected between the two motors, wherein the flow guiding structure is configured to guide a part of the lubricating oil delivered by the two-flow diverting mechanism to the two stator oil passages, and guide a part of the lubricating oil flowing out of the two stator oil passages to the two rotor oil passages;
- wherein each motor includes a rotor shaft, each rotor oil passage has a first shaft hole formed in the rotor shaft and extending in an axial direction of the rotor shaft, one end of the flow guiding structure is connected to one first shaft hole, and another end of the flow guiding structure is connected to another first shaft hole;
- and
- wherein the flow guiding structure comprises a circular flowing guiding disc, a first flow guiding channel is formed inside the flow guiding disc, one end of the first flow guiding channel extends to a peripheral side surface of the flow guiding disc, another end of the first flow guiding channel is connected to a central tube located in the center of the flow guiding disc, the first flow guiding channel is configured to guide the lubricating oil to flow to the rotor oil passages.
Dependencies are inferred from the claim text.