Control method and control system of oil-cooled motor cooling loop based on driving path

A driving path and motor cooling technology, applied in cooling/ventilation devices, electrical components, electromechanical devices, etc., can solve problems such as cooling lag, achieve the effects of reducing operating temperature, ensuring accuracy, and extending service life

Active Publication Date: 2021-09-21
CHONGQING CHANGAN AUTOMOBILE CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the control strategy of relying solely on the temperature of the oil-cooled motor collected by the temperature sensor to determine the speed of the oil pump is prone to cooling lag.

Method used

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  • Control method and control system of oil-cooled motor cooling loop based on driving path
  • Control method and control system of oil-cooled motor cooling loop based on driving path

Examples

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Embodiment Construction

[0035] The present invention will be described in detail below in conjunction with the accompanying drawings.

[0036] Such as figure 1 The shown control method of the oil-cooled motor cooling circuit based on the driving path is executed by the control unit, and the control method includes:

[0037] Step 1. Obtain the driving route from the vehicle navigation system, start timing, and then perform step 2.

[0038] Step 2: Obtain real-time road condition information (such as road gradient and traffic jam) on the driving route from the vehicle navigation system, and then perform Step 3.

[0039] Step 3: Based on the real-time road condition information, the driving route is divided into multiple road sections with working condition information, and then step 4 is performed.

[0040] The working condition information corresponding to any road section is normal working condition, low slope working condition, medium slope working condition, high slope working condition, weak tra...

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PUM

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Abstract

The invention discloses a control method and a control system of an oil-cooled motor cooling loop based on a driving path. The control method comprises the following steps: acquiring the driving path and real-time road condition information on the driving path from a vehicle-mounted navigation system; dividing the driving path into a plurality of road sections with working condition information based on the real-time road condition information; calling a preset oil-cooled motor operation condition model according to the condition information corresponding to each road section to obtain the oil-cooled motor rotating speed and the oil-cooled motor torque in each road section; calculating the temperature of the oil-cooled motor at each moment to form a temperature change curve of the oil-cooled motor, and re-predicting the temperature change curve of the oil-cooled motor when the driving path changes or the preset time is reached; and enabling an oil pump in the cooling loop of the oil-cooled motor to start and stop according to the temperature change curve of the oil-cooled motor. According to the invention, the oil-cooled motor can be cooled timely and effectively, and the reliability of the oil-cooled motor is improved.

Description

technical field [0001] The invention belongs to the field of oil-cooled motors, and in particular relates to a control method and a control system for a cooling circuit of an oil-cooled motor based on a traveling path. Background technique [0002] With the rapid development of pure electric vehicles, the issue of cruising range has gradually become the focus of attention. How to improve the cruising range of pure electric vehicles has become an important issue that needs to be solved urgently in the industry. There are two ways to increase the cruising range, one is "open source", that is, to increase the energy of the battery, and the other is "throttling", that is, to reduce the energy consumption of the car. As the power source of new energy vehicles, the motor realizes the conversion of electrical energy into mechanical energy to drive the vehicle, which plays a key role in the energy consumption performance of the vehicle. [0003] The performance of the motor is clos...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02H7/085H02K9/19
CPCH02H7/0856H02K9/19Y02T90/16
Inventor 彭钱磊陈富杜长虹栾文悦邓承浩周安健
Owner CHONGQING CHANGAN AUTOMOBILE CO LTD
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