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

A driving path and motor cooling technology, applied in the direction of cooling/ventilation devices, electromechanical devices, electrical components, etc., can solve the problem of cooling lag and other problems, achieve the effect of reducing operating temperature, reducing working time and power, and ensuring control accuracy

Active Publication Date: 2022-06-07
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 circuit based on driving path
  • Control method and control system of oil-cooled motor cooling circuit based on driving path

Examples

Experimental program
Comparison scheme
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Embodiment Construction

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

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

[0037] Step 1: Get the driving route from the car navigation system, start timing, and then go to step 2.

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

[0039] Step 3: Based on the real-time road condition information, the driving route is divided into a plurality of road sections with the 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 traff...

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Abstract

The invention discloses a control method and a control system of an oil-cooled motor cooling circuit based on a driving path. The control method includes: acquiring the driving path and real-time road condition information on the driving path from a vehicle navigation system; , divide the driving path into multiple road sections with working condition information; call the preset oil-cooled motor operating condition model according to the corresponding working condition information of each road section, and obtain the oil-cooled motor speed and oil-cooled motor torque in each road section; Calculate the temperature of the oil-cooled motor at each moment, form the temperature change curve of the oil-cooled motor, and re-predict the temperature change curve of the oil-cooled motor when the driving path changes or reaches the preset time; control the cooling of the oil-cooled motor according to the temperature change curve of the oil-cooled motor The oil pump in the circuit starts and stops. The invention can timely and effectively cool the oil-cooled motor and improve the reliability of the oil-cooled motor.

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 of a cooling circuit of an oil-cooled motor based on a driving path. Background technique [0002] With the rapid development of pure electric vehicles, the issue of cruising range has gradually become the focus of everyone's 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, increasing the energy of the battery, and the other is "throttling", that is, reducing 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 performance of the vehicle's energy consumption. [0003] The performance of the motor...

Claims

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Application Information

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Patent Type & Authority Patents(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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