Heat dissipation system of pure electric excavator and control method

• Main Authors: CHEN QINFA, WANG SHUAI, LIU YUEJI, WANG RONGBIAO, GUO HUIHUI, PENG HUIHUI, GENG JIAWEN, CHEN CHAO, WANG QING, WANG ZHEN
• Format: Patent
• Language: Chinese; English
• Published: 07.08.2020
• 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; DREDGING; ELECTRIC EQUIPMENT OR PROPULSION OF ELECTRICALLY-PROPELLEDVEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES, IN GENERAL; FIXED CONSTRUCTIONS; FOUNDATIONS; HYDRAULIC ENGINEERING; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; PERFORMING OPERATIONS; SOIL SHIFTING; TRANSPORTING; VEHICLES IN GENERAL

The invention discloses a heat dissipation system of a pure electric excavator and a control method. The system comprises a cooling liquid radiating system and a hydraulic oil radiating system, the cooling liquid heat dissipation system comprises a water pump, a cooling liquid cooling bag, a filter, a temperature sensor T0, parts needing water cooling heat dissipation, a hydraulic control valve, astop valve, a cold exchanger and a refrigerating system, the parts are connected in parallel, the system further comprises a controller, and the controller is connected with a motor in the parts needing water cooling heat dissipation in parallel or in series. Internal cooling water channels of precision parts such as a motor controller and a motor can be protected, and the service life of coolingliquid is prolonged; cooling water channels of all parts needing heat dissipation are arranged in parallel, the amount of water flowing through the interior of the cooling water channels is accurately controlled, the hydrauli