Micropower does not burn battery technology -Lithium - Ion Battery Equipment

Micropower does not burn battery technology? -Lithium - Ion Battery Equipment

Wu Yang, CEO of Weihong, introduced that when Weihong began to focus on the research and development of electric vehicle power systems in 2008, it established 10-minute fast charging (electric vehicle mobility guarantee), long life (realizing electric vehicle life cycle circulation) , non-combustion (to ensure that electric vehicles will not spontaneously ignite without warning) three major elements, "ten-minute fast charge" and "long life" battery technology has more than 10,000 sets of battery technology in 6 countries and more than 100 cities around the world. application. And the release this time is also the technical achievement of non-combustion battery developed by Weihong for 8 years.

At present, the controversy about battery safety technology in the industry mainly focuses on cathode materials and BMS battery management systems. Especially at the Electric Vehicle Hundred People's Forum at the beginning of this year, the Ministry of Industry and Information Technology stated that it will organize a risk assessment of ternary lithium batteries and suspend the inclusion of ternary lithium battery buses in the catalog of recommended models for the promotion and application of new energy vehicles. Wu Yang said that whether the battery burns or not has little to do with the cathode material. The battery is composed of four materials: positive stage, negative stage, electrolyte and diaphragm. The short circuit in the battery causes thermal runaway and fire. As long as you find a way to release the heat as soon as possible, it can be very safe.(Lithium - Ion Battery Equipment)

Solving the problems of the electrolyte and diaphragm inside the lithium-ion battery is equivalent to actively setting up defensive measures for the non-combustible battery. In terms of safety at the battery system level, Weihong also demonstrated the safety advantages brought by the immersion STL intelligent thermal control fluid technology. As a material with excellent insulation, flame retardant and thermal conductivity, STL can quickly isolate the thermal runaway point in the case of a slight internal short circuit inside the battery pack, and at the same time use the liquid to reduce the temperature of the thermal runaway point, reducing the battery pack to the greatest extent. Security Risk. As a passive defense system, in addition to safety, STL can also balance the internal temperature difference of the battery pack and use external circulation to achieve better temperature control. At the same time, even if the battery pack leaks, it can be detected through liquid detection in time, which is safer and more Assure.

The two active defense measures of non-combustible electrolyte and high temperature resistant diaphragm, combined with the passive defense measure of STL intelligent thermal control fluid, finally achieve non-combustion, high safety and high performance at the battery system level. The cell ignition displayed at the end of the conference also intuitively reflects the shocking effect of non-combustion battery technology compared to ordinary lithium-ion batteries.

The recent two sessions pointed out that "new energy vehicles" are a symbolic industry of "new economy" in the industrial field. The development of new energy vehicles has once again been elevated to a national strategy. Today, the core factors restricting the development of new energy vehicles are batteries and charging. Based on the 10-minute fast charging, long life and non-combustion battery technology advocated by Weihong, combined with the clean urban transportation (CCT) strategy, it is expected to make new energy vehicles really enter the fast lane.

There are many causes of short circuits in lithium-ion batteries, which can be divided into controllable external causes and uncontrollable internal causes. Unstable design, harsh environment and mechanical damage can be avoided through electronic devices and mechanical design, but some internal factors cannot be completely avoided.

Due to the influence of many factors such as material system and manufacturing process, lithium-ion batteries have the risk of internal short circuit. Although lithium-ion batteries have undergone strict aging and self-discharge screening before leaving the factory, due to process failure and other unpredictable use factors, there is still a certain probability of failure, resulting in internal short circuits during use. According to the current industry's highest standard 18650 battery quality control rate of 2ppm, for every 100,000 vehicles sold, 1,600 units are at high risk of spontaneous combustion.



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