Analysis on standards of China and other countries
Analysis on standards of China and other countries,
Analysis on standards of China and other countries,
▍SIRIM Certification
For the security of person and property, Malaysia government establishes product certification scheme and puts surveillance on electronic appliances, information & multimedia and construction materials. Controlled products can be exported to Malaysia only after obtaining product certification certificate and labeling.
▍SIRIM QAS
SIRIM QAS, a wholly-owned subsidiary of the Malaysian Institute of Industry Standards, is the only designated certification unit of the Malaysian national regulatory agencies (KDPNHEP, SKMM, etc.).
The secondary battery certification is designated by KDPNHEP (Malaysian Ministry of Domestic Trade and Consumer Affairs) as the sole certification authority. Currently, manufacturers, importers and traders can apply for certification to SIRIM QAS and apply for the testing and certification of secondary batteries under the licensed certification mode.
▍SIRIM Certification- Secondary Battery
Secondary battery is currently subject to voluntary certification but it is going to be in the scope of mandatory certification soon. The exact mandatory date is subject to the official Malaysian announcement time. SIRIM QAS has already started accepting certification requests.
Secondary battery certification Standard : MS IEC 62133:2017 or IEC 62133:2012
▍Why MCM?
● Established a good technical exchange and information exchange channel with SIRIM QAS who assigned a specialist to handle with MCM projects and inquiries only and to share the latest precisely information of this area.
● SIRIM QAS recognizes MCM testing data so that samples can be tested in MCM instead of delivering to Malaysia.
● To provide one-stop service for Malaysian certification of batteries, adapters and mobile phones.
It’s always a difficulty on the research of DCIR of a lithium-ion battery. It’s mainly because the internal resistance of a lithium-ion battery is very small, usually just some mΩ. Meanwhile as an active component, it is hard to measure the internal resistance directly. Besides, the internal resistance is influenced by the status of environment, like temperature and charges status. Below are standards that have mentioned about how to test DCIR.IEC 61960-3: 2017: Secondary cells and batteries containing alkaline or other non-acid electrolytes – Secondary lithium cells and batteries for portable applications – Part 3: Prismatic and cylindrical lithium secondary cells and batteries made from them.
IEC 62620:2014: Secondary cells and batteries containing alkaline or other non-acid electrolytes – Secondary lithium cells and batteries for use in industrial applications.Testing temperatures are different. IEC 62620:2014 and JIS C 8715-1:2018regulates a 5℃ higher of ambient temperature than IEC 61960-3:2017. Lower temperature will make it higher viscosity of electrolyte, which will cause lower movement of ions. Thus the chemical reaction will slower, and Ohm resistance and polarization resistance will become larger, which will cause a trend of DCIR increase.
