Electric vehicle battery protection system

Abstract

The present invention discloses an electric vehicle battery protection system, which comprises a plurality of energy storage devices, a plurality of DC-DC converters, a plurality of switches, a DC bus, a controller, a large-capacity energy storage device, resistors, a collision detection sensor and a refrigeration system. When an accident is detected, energy in batteries can be rapidly decreased, the energy in a battery pack is rapidly decreased by using a rapid cooling system, thus the energy in the batteries can be rapidly transferred to the single large-capacity energy storage device, and the single large-capacity energy storage device is cooled to prevent a fact that heat generated by a damaged battery is transferred to other batteries to make the adjacent batteries to conduct the same exothermic reactions, and the chain of dangerous reactions is caused to spread.

Description

technical field [0001] The invention relates to a battery protection system for an electric vehicle, in particular to the control and protection of the battery in the vehicle. Background technique [0002] New energy electric vehicles are becoming more and more mainstream in the automotive market. However, electric vehicles are usually driven by high-energy-density batteries. However, when a collision occurs or when subjected to excessive heat or mechanical stress, the high-energy-density battery is called thermal runaway. A dangerous exothermic reaction may release its energy uncontrollably and explode or catch fire. Batteries in a car are usually in close proximity to each other. Therefore, the thermal energy generated by one damaged battery can be transferred to other batteries, causing these nearby batteries to experience the same The exothermic reaction will spread the chain reaction. Contents of the invention [0003] The purpose of the present invention is to overc...

AI Technical Summary

Problems solved by technology

[0002] New energy electric vehicles are becoming more and more mainstream in the automotive market. However, electric vehicles are usually driven by high-energy-density batteries. However, when a collision occurs or when subjected to excessive heat or mechanical stress, the high-energy-density battery is called thermal runaway. In a dangerous exothermic reaction of a battery, it may release its energy uncontrollably and explode or catch fire. Batteries in a car are usually in close proximity to each other. Therefore, the thermal energy generated by one damaged battery can be transferred to other batteries, causing these nearby batteries to experience the same exothermic reaction, which spreads the chain reaction

Images