-Three step treatment for thermal runaway of power lithium batteries (4)

Three step treatment for thermal runaway of power lithium batteries (4)
author:enerbyte source:本站 click278 Release date: 2023-06-01 09:09:39
abstract:
The method to deal with collision (mechanical) heat loss is to design the structural safety protection of the battery. For this reason, Professor Ouyang Minggao proposed four design routes: 1. Assembly structure design: plastic frame support+steel strip pre tightening assemb...

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The method to deal with collision (mechanical) heat loss is to design the structural safety protection of the battery. For this reason, Professor Ouyang Minggao proposed four design routes:

1. Assembly structure design: plastic frame support+steel strip pre tightening assembly structure and high-strength skeleton;

2. Reliability design: use battery pack isolation connectors to reduce vibration wear; Elastic floating plate ensures connection reliability; Ip67 dustproof design;

3. Anti collision lightweight design: optimization of collision CAE structure; The battery module that meets the strength requirements is lightweight, and the mass group efficiency of the square shell system is 90%;

4. Battery pack positioning and locking technology: precise positioning and locking of the battery pack using limit self-locking and single locking mechanism.

The experts attending the meeting believed that the electric vehicle battery should meet the performance and safety related requirements, and the safety detection verification should meet the safety requirements of thermal detection (high temperature hazard, thermal stability, no heat management cycle, thermal shock cycle, passive propagation resistance), electrical detection (short circuit, overcharge and over discharge) and mechanical detection (impact, drop, puncture, roll, immersion, crushing). However, this does not mean that power lithium-ion battery companies can rest assured. Safety is endless, and improving the safety of electric vehicles requires the joint efforts of the state, research institutions, and the entire industry chain of lithium-ion batteries.

In the more than 100 year history of the development of fuel powered vehicles, accidents have also occurred continuously, and encountering setbacks is the law of everything's development. Therefore, regarding various accidents, the various industrial chains of electric vehicles should not be stagnant, but should examine and improve their existing problems and shortcomings. At the same time, it should also be realized that consumers' demands for safety are endless, and safety should be the primary condition to meet all functions.

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