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Oil-cooled motor cooling system and method for determining target rotating speed of oil pump of oil-cooled motor cooling system

A target speed and motor cooling technology, applied in cooling/ventilation devices, pump control, pump testing, etc., can solve the problems of unspecified determination of control targets, complex systems, etc., to avoid severe temperature fluctuations of oil-cooled motors, reduce Oil pump power consumption, solve the effect of high power consumption of oil pump

Active Publication Date: 2022-05-13
重庆长安新能源汽车科技有限公司
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  • Claims
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Problems solved by technology

Due to the large number of input variables in this control method, the system is too complex, and there is a coupling relationship between the input variables, and the control target does not specify the basis for determination

Method used

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  • Oil-cooled motor cooling system and method for determining target rotating speed of oil pump of oil-cooled motor cooling system
  • Oil-cooled motor cooling system and method for determining target rotating speed of oil pump of oil-cooled motor cooling system
  • Oil-cooled motor cooling system and method for determining target rotating speed of oil pump of oil-cooled motor cooling system

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Embodiment Construction

[0049] likefigure 1 As shown, the oil-cooled motor cooling system in this embodiment includes an oil-cooled motor system, a heat exchanger 1, an oil filter 2 (that is, an oil filter), an oil pump 3, an oil-cooled motor controller 5 and an oil pump controller 6, The oil-cooled motor system includes an oil-cooled motor 7 and a reducer 4 connected to the oil-cooled motor 7, a heat exchanger 1, an oil filter 2, an oil pump 3, a reducer 4, and the oil-cooled motor 7 are connected to form a cooling oil passage, and the oil-cooled motor The controller 5 is connected to the oil-cooled motor 7 and the oil pump controller 6, the oil pump controller 6 is connected to the oil pump 3, the oil-cooled motor controller 5 controls the operation of the oil-cooled motor 7, determines the target speed of the oil pump, and sends the target speed of the oil pump to the oil pump The controller 6 and the oil pump controller 6 control the oil pump 3 to run according to the target speed of the oil pump....

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Abstract

The invention discloses an oil-cooled motor cooling system and an oil pump target rotating speed determination method thereof, the target rotating speed of an oil pump is determined in a refined mode, the oil pump is controlled to operate according to the target rotating speed of the oil pump, and cooling oil is pumped into the oil-cooled motor system to cool the oil-cooled motor system. Fine cooling of the oil-cooled motor system is realized, power consumption of the oil pump is reduced, cooling lag of the oil pump and severe temperature fluctuation of the oil-cooled motor are avoided, and the problems of high power consumption of the oil pump, severe temperature fluctuation of the oil-cooled motor, cooling lag of the oil pump and the like in the operation process of the oil-cooled motor are solved.

Description

technical field [0001] The invention belongs to the technical field of thermal management of electric vehicles, and in particular relates to a cooling system for an oil-cooled motor and a method for determining a target rotational speed of an oil pump. Background technique [0002] During the operation of the oil-cooled motor, according to the internal heat balance of the system, it can be divided into steady-state working conditions and transient working conditions. Corresponding to the oil pump control, if its flow is always fully controlled, the oil-cooled motor and lubricating oil can be guaranteed not to be overheated, but there is a problem that the temperature of the oil-cooled motor changes drastically in the entire working range of the oil-cooled motor. As a result, the torque output accuracy of the oil-cooled motor is reduced, and the power consumption of the oil pump is too large; if the flow rate of the oil pump is only set according to the current NTC sampling t...

Claims

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Application Information

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IPC IPC(8): H02K9/19F04B49/06F04B51/00
CPCH02K9/19F04B49/06F04B51/00Y02T10/64
Inventor 刘立王志斌陈扬陈健陈鹏沈晓义李华
Owner 重庆长安新能源汽车科技有限公司
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