Electric vehicle power battery safety monitoring device and method

Abstract

The invention discloses an electric vehicle power battery safety monitoring device and method. The monitoring device comprises a data acquisition system, a data transmission system, a data saving system and a state monitoring system. The state monitoring system comprises a data processing subsystem, an execution module and a remote communication unit. The data acquisition system sends the collected battery state data to the data saving system for caching through the data transmission system, and injects into the data processing subsystem to detect the internal resistance of a battery cell through an online parameter identification module. A evaluation index system combines the multi-factor and multi-level fuzzy logic reasoning to comprehensively evaluate the battery safety status; according to the evaluation result in combination with a corresponding control strategy, a control signal is injected into the execution module to achieve the battery safety monitoring and control. The devicehas the advantages of being systematic and intelligent, and the monitoring and troubleshooting of faulty vehicles are achieved through a remote communication technology in combination with a monitoring platform.

Description

technical field [0001] The invention relates to a monitoring and control technology for the safety state of a power battery, in particular to a safety monitoring device and method for a power battery of an electric vehicle. Background technique [0002] Electric vehicles are of great significance for promoting the strategic transformation of transportation energy and alleviating environmental pollution. At the same time, time-sharing rental of electric vehicles can reduce the number of vehicles on the road, alleviate traffic congestion to a certain extent, and the market demand continues to expand. However, accidents related to electric vehicles catching fire are reported frequently. Therefore, the safety of battery systems of electric vehicles has also become the focus of widespread attention inside and outside the industry, causing passengers to worry. Overheating of the battery system, liquid leakage, water immersion, overcharge, overdischarge, etc. are the main causes o...

AI Technical Summary

Problems solved by technology

[0009] However, the above solution does not solve a major problem in the battery safety monitoring system, that is, how to effectively and centrally integrate the detection of multiple safety performance parameters of the battery and related equipment into a system management platform.

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