Electric motors, electric vehicles

A cooling channel and axial width technology, applied in the direction of electric vehicles, motors, electric components, etc., can solve the problems of local overheating of motors, reduction of motor working efficiency, power loss, etc., to reduce power loss, eliminate local overheating, and improve work efficiency effect

Active Publication Date: 2021-01-29
SCHAEFFLER TECH AG & CO KG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The problem solved by the invention is that the existing motor has the problem of local overheating, which causes power loss and reduces the working efficiency of the motor

Method used

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  • Electric motors, electric vehicles
  • Electric motors, electric vehicles
  • Electric motors, electric vehicles

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Embodiment Construction

[0022] Aiming at the problems existing in the prior art, the inventor found through research that the inlet and outlet of the cooling channel are located on both sides of the partition, which forms a dead water zone near the partition between the inlet and the outlet.

[0023] During the coolant circulation process, due to the partition, the low-temperature coolant flowing from the input port will flow towards the output port, and only a small amount of low-temperature coolant will flow to the cooling channel area between the partition and the input port, so that The coolant in the area of ​​the cooling channel between the partition and the inlet is in a stagnant state for a long time.

[0024] Correspondingly, the low-temperature coolant from the input port flows into the high-temperature coolant after flowing through the cooling channel, and the high-temperature coolant directly flows into the output port and is output, while only a small amount of high-temperature coolant fl...

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PUM

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Abstract

A motor and an electric vehicle, wherein the motor includes a casing and a cooling passage located in the casing, the cooling passage surrounds the central axis of the casing, and a partition is arranged in the cooling passage; the partition The cooling channel is axially partitioned into two sub-channels, the partition member has a connecting channel connecting the two sub-channels, and the two sub-channels respectively have an input port and an output port, and the input port and the output port The ports are all spaced apart from the connecting channel along the circumferential direction. With this technical solution, the first sub-channel and the second sub-channel in the cooling channel are connected through the connecting channel, the coolant in the first sub-channel, the second sub-channel and the connecting channel are all in a continuous flow state, and no dead water zone will be formed . Therefore, the coolant in the entire cooling channel is in a state of continuous flow, which reduces the probability of forming a dead water zone. This can eliminate the problem of local overheating of the motor, reduce power loss, and improve the working efficiency of the motor.

Description

technical field [0001] The invention relates to a motor and an electric vehicle. Background technique [0002] Electric vehicles are powered by on-board power supplies, and use electric motors to convert electrical energy into mechanical energy to drive wheels. An existing electric motor for an electric vehicle includes a housing, in which an annular cooling passage is provided around the central axis of the housing, and a coolant can circulate in the cooling passage, and the coolant can absorb the energy of the motor during the circulation process. The generated heat realizes the purpose of cooling the motor. [0003] A partition member is provided in the cooling passage to partition the cooling passage along the circumferential direction. The cooling channel has an input port and an output port, and the input port and the output port are both close to the partition and respectively located on two sides of the partition along the circumferential direction. The low-temper...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H02K5/20
CPCH02K5/20Y02T10/64
Inventor 饶玲军陈苏涛
Owner SCHAEFFLER TECH AG & CO KG
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