Stator, motor, power assembly, and electric vehicle

A motor, comprising a motor housing and a stator, and the stator comprises a stator core and a seal kit;

• the stator core comprises a yoke part and a plurality of tooth parts, a tooth root of the tooth part is connected to the yoke part, a tooth top of the tooth part is away from the yoke part, and an opening slot is formed between two adjacent tooth parts;
• the opening slot comprises a coil slot and a flow passing slot that communicate with each other, the coil slot extends from the tooth top to the tooth root, the coil slot is configured to accommodate a stator coil, and the flow passing slot extends from the tooth root to the yoke part;
• and
• the seal kit is connected to an inner wall of the opening slot, and the seal kit and the inner wall of the flow passing slot jointly form a flow passing passage for a coolant to flow through, and the stator is accommodated inside the motor housing,
• wherein the motor further comprises a first end cover and a second end cover, and the first end cover and the second end cover are respectively connected to two ends of a housing of the stator and abut against two axial ends of the stator core;
• there is a plurality of connection passages, wherein the connection passages are spaced in the circumferential direction;
• the first end cover comprises a first body and a plurality of first protrusion parts protruding from the first body, the plurality of first protrusion parts is spaced in the circumferential direction and abut against the stator core, each of the first protrusion parts is provided with one first liquid outlet penetrating the first end cover, the first body cooperates with the housing of the stator and the stator core to form a first flow equalization passage, and the first flow equalization passage communicates with the plurality of connection passages;
• the second end cover comprises a second body and a plurality of second protrusion parts protruding from the second body, the plurality of second protrusion parts is spaced in the circumferential direction and abut against the stator core, each of the second protrusion parts is provided with one second liquid outlet penetrating the second end cover, the second body cooperates with the housing of the stator and the stator core to form a second flow equalization passage, and the second flow equalization passage communicates with the plurality of connection passages;
• and
• two adjacent flow passing passages respectively communicate with the first liquid outlet and the second liquid outlet, the flow passing passage communicating with the first liquid outlet further communicates with the second flow equalization passage, and the flow passing passage communicating with the second liquid outlet further communicates with the first flow equalization passage.

A power assembly, comprising a motor controller and a motor, the motor comprises a motor housing and a stator, and the stator comprises a stator core and a seal kit;

• the stator core comprises a yoke part and a plurality of tooth parts, a tooth root of the tooth part is connected to the yoke part, a tooth top of the tooth part is away from the yoke part, and an opening slot is formed between two adjacent tooth parts;
• the opening slot comprises a coil slot and a flow passing slot that communicate with each other, the coil slot extends from the tooth top to the tooth root, the coil slot is configured to accommodate a stator coil, and the flow passing slot extends from the tooth root to the yoke part;
• and
• the seal kit is connected to an inner wall of the opening slot, and the seal kit and the inner wall of the flow passing slot jointly form a flow passing passage for a coolant to flow through, and the stator is accommodated inside the motor housing, and the motor controller is electrically connected to the motor;
• wherein the motor further comprises a first end cover and a second end cover, and the first end cover and the second end cover are respectively connected to two ends of a housing of the stator and abut against two axial ends of the stator core;
• there is a plurality of connection passages, wherein the connection passages are spaced in the circumferential direction;
• the first end cover comprises a first body and a plurality of first protrusion parts protruding from the first body, the plurality of first protrusion parts is spaced in the circumferential direction and abut against the stator core, each of the first protrusion parts is provided with one first liquid outlet penetrating the first end cover, the first body cooperates with the housing of the stator and the stator core to form a first flow equalization passage, and the first flow equalization passage communicates with the plurality of connection passages;
• the second end cover comprises a second body and a plurality of second protrusion parts protruding from the second body, the plurality of second protrusion parts is spaced in the circumferential direction and abut against the stator core, each of the second protrusion parts is provided with one second liquid outlet penetrating the second end cover, the second body cooperates with the housing of the stator and the stator core to form a second flow equalization passage, and the second flow equalization passage communicates with the plurality of connection passages;
• and
• two adjacent flow passing passages respectively communicate with the first liquid outlet and the second liquid outlet, the flow passing passage communicating with the first liquid outlet further communicates with the second flow equalization passage, and the flow passing passage communicating with the second liquid outlet further communicates with the first flow equalization passage.