Master-slave role switching control strategy for battery management system

• Main Author: LYU TIANYUAN
• Format: Patent
• Language: Chinese; English
• Published: 08.05.2020
• 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 belongs to the technical field of battery management, and particularly relates to a master-slave role switching control strategy for a battery management system, which comprises the following steps of: 1, connecting two groups of battery packs in parallel, switching to a CAN communication network, and setting master-slave identity selection switches of the two groups of battery packs, 2, performing power-on self-test after the battery management system is started, and firstly detecting a master-slave identity selection switch of the battery management system, 3, enabling each lithium battery pack to analyze a master-slave identity selection switch of the other lithium battery pack on the CAN communication network according to the received special message and the mark of whether self-test ends, and 4, enabling each lithium battery pack to analyze a master-slave identity selection switch of the other lithium battery pack on the CAN communication network according to the received special message an