Vehicle travelling recoding device and method of battery management system for electric vehicle

Abstract

The invention provides a vehicle travelling recoding device and method of a battery management system (BMS) for an electric vehicle, and the device and method provided by the invention can be used for timely recoding work status information of a power battery pack. The device comprises a microprocessor, an information storage module, a CAN (controller area network) transceiver, a power module and a clock module. By adopting a good heat-insulating and water-proof measure, the device not only can supply complete data information to the BMS under a normal working condition but also can supply reliable data information to analyze the fault of the electric vehicle when the fault happens; the data is read and written by a CAN, so that information of the battery pack such as voltage, current and the like is periodically stored; after a storage card is fully written, previous record can be replaced by new record; the stored battery pack information can be timely read by virtue of an interface of an upper computer as required; and the device has the functions such as storing, printing, and the like.

Description

[0001] technical field [0002] The invention relates to the field of power battery management systems for electric vehicles, in particular to a device and method for real-time recording of the working status of the power battery pack management system for electric vehicles. Background technique [0003] In recent years, new energy vehicles have become increasingly popular, and electric vehicles with the advantages of high efficiency, energy saving, low emission or zero emission have regained their vitality, and have received extensive attention from all over the world. They are the main direction of international energy-saving and environmentally friendly vehicle development. As one of the core components of electric vehicles, the power battery has attracted more and more attention in its industrial application, and the requirements for the power battery management system are also getting higher and higher. The application of lead-acid, nickel-metal hydride, and lithium bat...

AI Technical Summary

Problems solved by technology

Safety is especially important, because it is directly related to personal and property safety. At present, spontaneous combustion of electric vehicles occasionally occurs. Once a fire occurs, all information in the battery pack cannot be retained. It is difficult for technicians to analyze the cause of the failure, and there is no data basis for solving the problem.

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