The way to suppress thermal runaway in a module
The way to suppress thermal runaway in a module,
The way to suppress thermal runaway in a module,
▍Compulsory Registration Scheme (CRS)
Ministry of Electronics & Information Technology released Electronics & Information Technology Goods-Requirement for Compulsory Registration Order I-Notified on 7th September, 2012, and it came into effect on 3rd October, 2013. Electronics &Information Technology Goods Requirement for Compulsory Registration, what is usually called BIS certification, is actually called CRS registration/certification. All electronic products in the compulsory registration product catalog imported to India or sold in the Indian market must be registered in the Bureau of Indian Standards (BIS). In November 2014, 15 kinds of compulsory registered products were added. New categories include: mobile phones, batteries, power banks, power supplies, LED lights and sales terminals, etc.
▍BIS Battery Test Standard
Nickel system cell/battery: IS 16046 (Part 1): 2018/ IEC62133-1: 2017
Lithium system cell/battery: IS 16046 (Part 2): 2018/ IEC62133-2: 2017
Coin cell/battery is included in CRS.
▍Why MCM?
● We have been focused on Indian certification for more than 5 years and helped client obtain the world’s first battery BIS letter. And we have practical experiences and solid resource accumulation in BIS certification field.
● Former senior officers of Bureau of Indian Standards (BIS) are employed as certification consultant, to ensure case efficiency and remove the risk of registration number cancellation.
● Equipped with strong comprehensive problem solving skills in certification, we integrate indigenous resources in India. MCM keeps good communication with BIS authorities to provide clients with the most cutting-edge, most professional and most authoritative certification information and service.
● We serve leading companies in various industries and earn a good reputation in the field, which make us deeply trusted and supported by clients.
We can restrain thermal runaway actively or passively.
Active thermal spread suppression is mostly based on thermal management system, like:1)Set cooling pipes on the bottom or the inner sides of a module, and fill with cooling liquid. The flowing of cooling liquid can effectively decrease the propagation.2)Set up fire extinction pipes on the top a module. When there’s thermal runaway, the high temperature gas released from battery will trigger the pipes to spray out extinguishant to suppress propagation.However, a thermal management requires extra components, lead to higher cost and lower energy density. There’s also possibility that the management system may not take effect.Passive suppression works by blocking propagation through adiabatic material between thermal runaway cells and normal cells. Normally the material should feature in: Low thermal conductivity. This is to lower the speed of heat spreading.High temperature resistance. The material should not resolve under high temperature and lose the ability of thermal resistance. Low density. This is to lower the influence of volume-energy rate and mass-energy rate.The ideal material can meanwhile block the heat spreading as well as absorb the heat.
