A motor and controller cooling system and method

Abstract

The invention relates to a cooling system and method for a motor and a controller, and belongs to the technical field of cooling of an automobile drive system. It includes a cooling package assembly; two ends are respectively connected to the circulation circuit of the high-level interface and the low-level interface of the cooling package assembly, and the circulation circuit includes water pumps arranged in series, and a first branch circuit and a second branch circuit connected in parallel ; and the expansion tank connecting the cooling package assembly and the circulation circuit; wherein, the first branch includes an integrated controller and a generator arranged in series, and the integrated controller is located before the generator; The second branch includes the drive motor. The present invention uses a cooling system. At the same time, it can not only meet the flow and heat dissipation requirements of the controller and generator, but also meet the flow and heat dissipation requirements of the driving motor.

Description

technical field [0001] The invention relates to a cooling system and method for a motor and a controller, and belongs to the technical field of cooling of an automobile drive system. Background technique [0002] There are two main traditional cooling methods for current automotive electric drive systems. The first is that the generator and the drive motor are arranged in series, and the generator controller and the drive motor controller are arranged in series to form independent cooling systems. However, this method has the disadvantage of taking up a lot of space, and each cooling system uses a water pump, a radiator, and one or more electronic fans for heat dissipation, and the production cost is relatively high. The second is that the controller, the generator, and the drive motor are arranged in series to form a cooling system, and a water pump, a radiator, and one or more electronic fans are used for pumping and cooling. However, the disadvantage of this type of coo...

AI Technical Summary

Problems solved by technology

The disadvantage is that the water temperature will be delayed compared with the temperature of the generator, drive motor stator coil and the temperature of the generator controller and drive motor controller IGBT, and there will be a temperature difference, which will change with the driving conditions of the vehicle And changes, it is difficult to grasp the precise control algorithm

Therefore, in the actual driving process of the vehicle, the water temperature will not be high, but the generator, drive motor stator coil, generator controller, and drive motor controller IGBT have already experienced high temperature and power limitation, which affects the normal driving of the vehicle.

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