Cooling control method and cooling control device for motor and controller thereof

• Main Authors: SHI ZHONGGUANG, LI GUOFU, CHEN LINGPING, NIU SHENGFU, DAI XIHUAI, ZHANG SUNHUA, LI HAO
• Format: Patent
• Language: Chinese; English
• Published: 10.04.2020
• Subjects: ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS INVEHICLES; ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OFTRANSMISSIONS IN VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GASEXHAUST OR FUEL SUPPLY OF PROPULSION UNITS, IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; BLASTING; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER; DYNAMO-ELECTRIC MACHINES; ELECTRIC EQUIPMENT OR PROPULSION OF ELECTRICALLY-PROPELLEDVEHICLES; ELECTRICITY; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES, IN GENERAL; GENERATION; HEATING; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; LIGHTING; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MECHANICAL ENGINEERING; NON-POSITIVE DISPLACEMENT PUMPS; PERFORMING OPERATIONS; POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS; TRANSPORTING; VEHICLES IN GENERAL; WEAPONS

The invention provides a cooling control method and a cooling control device for a motor and a controller thereof. The method comprises the following steps: firstly, acquiring the following parameters: real-time rotating speed, power and stator temperature of the motor, the temperature of a cooling liquid at a motor inlet, the real-time power and temperature of the motor controller and the runningtime of a fan at the highest gear; secondly, calculating a flow demand according to the rotating speed and the power of the motor and the water temperature, correcting the flow demand according to the temperature of a stator, calculating a flow demand according to the power of the motor controller and the water temperature, correcting the flow demand according to the temperature of the motor controller, and taking the larger one of the two corrected values as a target flow demand; then, correcting the target flow demand according to the running time of the fan at the highest gear; and finally, adjusting a water pump