Real-time monitoring and diagnosis system and diagnosis method of electric vehicle battery management system

Abstract

The invention discloses a real-time monitoring diagnostic system and diagnostic method for an electromobile battery management system. The real-time monitoring diagnostic system comprises an upper computer and a CAN communication data transmission module; the CAN communication data transmission module comprises a USB interface and a CAN wire interface, the USB interface is connected with the upper computer, and the CAN wire interface is connected with the CAN wire of a BMS. The diagnostic method comprises the steps that operation parameters and data displaying of a host machine and a slave machine of the BMS system are set; a monitoring system operates in real time and automatically stores real-time information; reliability and sensitivity of BMS protecting actions are verified, generation of voltages, currents, temperature signals and anomalous events can be simulated, so that reaction of the BMS to abnormal signals is captured and diagnosis is conducted on the BMS; control reliability of each relay of the BMS is detected. The real-time monitoring diagnostic system and diagnostic method for the electromobile battery management system meets detection application requirements during BMS batch production and improves production testing efficiency, can carry out real-time fault diagnosis on the BMS through the CAN, and provides an effective method for debugging and fault processing work.

Description

Technical field [0001] The invention relates to a real-time monitoring and diagnosis system and a diagnosis method for an electric vehicle battery management system. Background technique [0002] At present, new energy vehicles are listed as national key projects, which mainly involve the electric vehicle industry. The current development of key technologies for electric vehicles includes vehicle control technology, power battery technology, and battery management system technology. Among them, the battery management system (BMS) is the link between the power battery and the user. In recent years, with the development of electric vehicle technology, the pros and cons of the BMS system will directly affect the safety and reliability of electric vehicles, so the performance requirements of the BMS system are getting higher and higher. The detection and monitoring of the BMS system is one of the important ways to ensure and improve the performance of the BMS system. [0003] The exi...

AI Technical Summary

Problems solved by technology

Its shortcoming is that it cannot reflect the operating status in real time, and the storage time interval is generally above the second level. If the system is temporarily disturbed or in an instant alarm state, it cannot accurately reflect

Its disadvantages are: the fault detection is not intuitive, the operator needs to be familiar with the BMS system communication protocol, which brings tediousness to the after-sales maintenance work

Its shortcomings are: remote monitoring has a high demand for network communication, and the amount of data it can carry is limited, which cannot meet the needs of batch data analysis

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