Thermal runaway control system for lithium ion battery pack for new energy electric vehicle and running method

Abstract

The invention discloses a thermal runaway control system for a lithium ion battery pack for a new energy electric vehicle, which comprises a battery pack body and an inert gas tank, wherein a batterymodule, a BMS module and a BDU module are arranged in a box body of the battery pack body; the BMS module and the BDU module are used for monitoring the state of the battery module; a thermal runawaymonitor electrically connected with the BMS module is further arranged in the box body; an outlet of the inert gas tank communicates with the interior of the box body of the battery pack body througha gas conveying pipeline; an electromagnetic valve controlled by the BMS module is installed on the gas conveying pipeline; and a balance ventilation valve is further arranged at one end of the box body. The thermal runaway control system disclosed in the invention is simple and convenient in component integration, safe, reliable, high in detection precision, high in response timeliness rate, highin restraining effectiveness, adjustable in component fixity, good in universality and practicability and capable of effectively monitoring and restraining thermal runaway while thermal runaway is prevented, and therefore thermal runaway can be effectively and controllably achieved.

Description

technical field [0001] The invention belongs to the technical field of battery pack management, in particular to a thermal runaway control system for a lithium-ion battery pack for a new energy electric vehicle, and in particular to an operating method for the thermal runaway control system for a lithium-ion battery pack for a new energy electric vehicle. Background technique [0002] In recent years, with the rapid development of the electric vehicle industry, the number and demand of domestic new energy vehicles have increased year by year. At the same time, the safety issues of new energy vehicles have gradually been paid attention to, and the safety issues mainly focus on the thermal runaway of lithium-ion power batteries. Above, the so-called thermal runaway refers to the combination of abnormal internal chemical reaction of the lithium battery in the battery pack and external abuse, etc., the occurrence of high heat concentration leads to the decomposition and gasificat...

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to provide a lithium-ion battery pack thermal runaway control system and operation method for new energy electric vehicles, so as to solve the problem of thermal runaway of lithium-ion battery packs in the prior art proposed in the above-mentioned background technology. However, prevention and warning measures cannot completely avoid the occurrence of thermal runaway, and there is still a certain probability that electric vehicles will catch fire.

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