Integrated 48V system for vehicle, vehicle and control method

• Main Authors: SHAN CHANGZHENG, YU XUDONG, XIE BIN, ZHENG ZHAOKE
• Format: Patent
• Language: Chinese; English
• Published: 05.07.2022
• Subjects: BASIC ELECTRIC ELEMENTS; ELECTRIC EQUIPMENT OR PROPULSION OF ELECTRICALLY-PROPELLEDVEHICLES; ELECTRICITY; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES, IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; PERFORMING OPERATIONS; PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSIONOF CHEMICAL INTO ELECTRICAL ENERGY; TRANSPORTING; VEHICLES IN GENERAL

The invention discloses an integrated 48V system for a vehicle, which comprises a vehicle control unit, a battery management system, a battery system and a motor, and is characterized in that the battery management system is in communication connection with the vehicle control unit and is connected with the battery system, and the motor is connected with the battery system; the battery system is characterized in that the battery system comprises a first battery and a second battery, and the first battery and the second battery can be connected in series to form a 48V battery; the interlocking switch is connected with the battery management system, and the interlocking switch comprises a first relay and a second relay which are interlocked; the battery distribution unit is connected with the battery management system and comprises a third relay and a fourth relay; the DC/DC converter is connected with the battery management system; the battery management system monitors the state of the battery system, estimat