Heat dissipation method for rotating motor and rotating motor using same

Abstract

The invention discloses a heat dissipation method for a rotating motor and the rotating motor using the same to dissipate heat, and belongs to the technical field of motors. The heat dissipation method for the rotating motor comprises the steps that a wind shielding structure is installed between a motor rear cover and an electronic assembly connected to the rear end of the motor rear cover, and agap is formed between the electronic assembly and the wind shielding structure to form a first cooling air inlet channel; a cooling fan is mounted on the rotating shaft mounted on the motor rear cover; when the rotating motor works, the cooling fan rotates, the first cooling air inlet channel can suck air from the peripheral side to form first cooling air flow, and heat exchange is sequentially conducted in the first cooling air inlet channel and the cavity through the first cooling air flow; hot air exhausted from the radial air outlet and formed by heat exchange with the cavity is blocked through the air blocking structure, and airflow formed by the hot air exhausted from the radial air outlet and airflow formed by air entering from the first cooling air inlet channel are separated through the air blocking structure. According to the heat dissipation method for the rotating motor, heat dissipation can be reliably carried out.

Description

technical field [0001] The invention relates to the technical field of motors, in particular to a heat dissipation method for a rotating electrical machine and a rotating electrical machine using the heat dissipation method. Background technique [0002] At present, rotating electrical machines are used in hybrid electric vehicles, electric vehicles, etc.; when rotating electrical machines are used in hybrid electric vehicles, the rotating electrical machines are used to drive the tires of the vehicles, and the rotating electrical machines are used as generators to charge batteries, while hybrid electric vehicles The car is easy to start and stop repeatedly during driving, which will easily cause the stator to generate a lot of heat. In addition, the high-speed rotation of the rotating motor will also easily cause the stator to generate a lot of heat. When the temperature of the stator is high, it will generate heat radiation to the electronic components installed on the bac...

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Problems solved by technology

[0002] At present, rotating electrical machines are used in hybrid electric vehicles, electric vehicles, etc.; when rotating electrical machines are used in hybrid electric vehicles, the rotating electrical machines are used to drive the tires of the vehicles, and the rotating electrical machines are used as generators to charge batteries, while hybrid electric vehicles The car is easy to start and stop repeatedly during driving, which will easily cause the stator to generate a lot of heat. In addition, the high-speed rotation of the rotating motor will also easily cause the stator to generate a lot of heat. When the temperature of the stator is high, it will generate heat radiation to the electronic components installed on the back cover of the motor. The electronic components installed on the back cover of the motor mainly include power modules, control modules, filter modules, etc., among which the power modules are used to connect and drive Rotating motor, the control module is used to generate control signals and control the power module to control the working mode of the rotating motor, the filter module prevents the power module from interfering with the power grid of the motor wheel, and the power module, control module, and filter module also generate heat during use , it is easy to make the temperature of the power module, the control module and the filter module in the process of use too high and they cannot work normally or even be damaged. Therefore, it is particularly important to be able to dissipate heat reliably for the rotating motor, but the heat dissipation of the existing cooling method for the rotating motor The effect is not ideal, and the heat dissipation effect of the rotating motor is poor, thereby reducing the service life of the rotating motor

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