Battery management system for pure electric bus

Abstract

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.

Description

technical field [0001] The invention relates to the technical field of electric vehicle battery management systems. Background technique [0002] With the rapid development of the automobile industry and the rapid increase of urban population and vehicles, the fuel consumption of the urban transportation system will also increase sharply, and the pressure on the transportation system is also increasing. The pressure of energy saving and environmental protection is driving the technological change of the transportation energy power system, and the main trend is the electrification of vehicle energy. Due to the fixed bus route and short mileage, the power system is required to have good economical and environmental requirements. At present, the energy density of batteries has basically met the needs of bus operation, and corresponding batteries can be equipped according to the mileage of bus lines. Therefore, pure electric buses are one of the main development directions of e...

AI Technical Summary

Problems solved by technology

[0004] (1) The battery management system of pure electric buses usually only has two modes of on-board operation and vehicle charging, which cannot meet the operation needs of rapid bus replacement;

[0005] (2) During the charging process of pure electric buses, the battery management system is separated from the charging equipment, and the charging equipment cannot know the real-time status of the battery in time, so the safety of charging cannot be effectively guaranteed;

[0006] (3) The PC monitoring system equipped with the battery management system has problems such as short standby time and inconvenient portability, which cannot meet the needs of on-site debugging and fault diagnosis

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