Spontaneous combustion prevention system for battery of electric vehicle

Abstract

The invention discloses a spontaneous combustion prevention system for a battery of an electric vehicle. The spontaneous combustion prevention system comprises a battery box and a wind gathering cover connected with the battery box, a plurality of battery pack grooves extending longitudinally are formed in the battery box in the transverse direction at intervals, airflow channels are formed between the adjacent battery pack grooves, ventilation pipes are arranged in the airflow channels and penetrate through the front end and the rear end of the battery box, and the wind gathering cover comprises a fixed wind gathering part, a rotary wind guiding part and a driving motor; a fan is arranged at the tail part of each ventilation pipe; the positions, close to the two ends, of the fixed air gathering part are connected with cold air pipes, the cold air pipes are connected with an air outlet of a refrigerating machine to guide cold air provided by the refrigerating machine into the air gathering cover, each battery pack groove is provided with a plurality of battery positions, each battery position is provided with a battery and a temperature sensor for detecting the temperature of the corresponding battery, all the batteries are connected in parallel, and each battery lead-out wire is connected with a temperature control switch. According to the system, air cooling is utilized, and the situation of spontaneous combustion of the batteries caused by overlarge current, overlarge voltage and overhigh temperature can be effectively prevented.

Description

technical field [0001] The invention relates to the technical field of electric vehicle batteries, in particular to an electric vehicle battery spontaneous combustion prevention system. Background technique [0002] Spontaneous combustion of the newly emerging electric vehicles occurs from time to time, and the occurrence of spontaneous combustion is easy to cause personal injury and economic loss to the car owner. For the spontaneous combustion of electric vehicles, the reasons are: [0003] Electric vehicles use more batteries due to their improved battery life. If the batteries are connected in series with a higher voltage, or if the parallel current is higher, once a short circuit occurs, the vehicle will spontaneously ignite. [0004] Electric car batteries will heat up when charging, especially in hot summer, when the temperature rises to a certain height, the circuit insulation material of the battery will fail, causing a short circuit and causing the car to spontane...

AI Technical Summary

Problems solved by technology

[0007] Although the above-mentioned patent can solve the technical problem of lowering the battery temperature and further avoiding self-explosion, the above-mentioned patent uses liquid for heat exchange and cooling, and additional water pumps are required, so it is still relatively complicated to apply to electric vehicles

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