Battery management system for pure electric bus

The invention relates to the technical field of battery management systems for electric vehicles, and provides a battery management system for a pure electric bus. The battery management system has three working modes of on-vehicle running, whole vehicle emergent charging and quick replacing, and mainly comprises a main control module, a detection module, a handheld device, a monitoring computer and an on-vehicle battery pack. The battery management system can transmit the obtained real-time battery state and detailed information on the on-vehicle battery pack after processing to a whole vehicle controller, an on-vehicle instrument, and the monitoring computer for online monitoring; and under the whole vehicle emergent charging and the quick replacing modes, the battery management system can perform data interaction with a charging device to achieve safe charging. The battery management system is also provided with the handheld device, and can achieve voltage acquisition of a single-box battery, and the debugging and the fault diagnosis of the detection module. The battery management system has the advantages of strong communication functions, perfect charging management, complete auxiliary equipment, and high safety, reliability and stability.