Electric vehicle battery safety supervision and early warning system and supervision and early warning method thereof

Abstract

The invention discloses an electric vehicle battery safety supervision early warning system which comprises a safety supervision mechanism connected between a lithium battery and an external terminal and an early warning mechanism installed on an electric vehicle, wherein the safety supervision mechanism communicates with the early warning mechanism and a cloud early warning platform, and the cloud early warning platform communicates with a user terminal. According to the electric vehicle battery safety supervision early warning system adopting the structure, the current state of the lithium battery is monitored through the safety supervision mechanism installed on the lithium battery, whether charging or discharging can be continued or not is judged, and if the charging or discharging exceeds the safety range, connection of an external circuit is stopped immediately; therefore, lithium battery deflagration accidents caused by continuous charging or discharging are avoided, and a reason data signal for forbidding work is sent to a cloud early warning platform and an early warning mechanism on the electric vehicle, so that safety supervision of the lithium battery is realized.

Description

technical field [0001] The invention relates to a battery safety supervision technology, in particular to an electric vehicle battery safety supervision and early warning system and a supervision and early warning method thereof. Background technique [0002] At present, electric vehicles are very popular, and the number of vehicles has reached 300 million, and the growth rate is still accelerating. This is due to its convenience and affordable price, but it also brings great security risks while bringing convenience to people. [0003] Electric vehicles in these deflagration fire accidents basically use lithium batteries. Scenes where deflagration occurs can be roughly divided into three categories: charging, driving, and standing still, of which 80% occur during charging. The places where the deflagration took place all took place in three kinds of places in public areas such as home interiors, special carports, corridors and offices. [0004] At present, the strategies...

AI Technical Summary

Problems solved by technology

This is the same as the second method, which is not easy to implement. Sometimes it is not exposed to the sun or in a high temperature environment when charging, but the environment may change during the charging process and cause the temperature to rise without being noticed by the user.

[0008] The above three countermeasures cannot really solve the problem of deflagration of electric vehicle batteries, and potential safety hazards still exist. Therefore, a solution to both symptoms and root causes is urgently needed to avoid and reduce the occurrence of electric vehicle lithium battery deflagration fire accidents. An early warning scheme for issuing early warning before battery deflagration to reduce casualties and economic losses

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