Stepped heating tests for Ternary li-cell and LFP cell,
LFP,

▍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.

In the new energy automobile industry, ternary lithium batteries and lithium iron phosphate batteries have always been the focus of discussion. Both have their advantages and disadvantages. The ternary lithium battery has high energy density, good low-temperature performance, and high cruising range, but the price is expensive and not stable. LFP is cheap, stable, and has good high-temperature performance. The disadvantages are poor low-temperature performance and low energy density.
In the development process of the two batteries, due to different policies and development needs, two types play against each other up and down. But no matter how the two types develop, the safety performance is the key element. Lithium-ion batteries are mainly composed of negative electrode material, electrolyte and positive electrode material. The chemical activity of the negative electrode material graphite is close to that of metallic lithium in the charged state. The SEI film on the surface decomposes at high temperatures, and the lithium ions embedded in the graphite react with the electrolyte and the binder polyvinylidene fluoride to release a lot of heat. Alkyl carbonate organic solutions are commonly used as
electrolytes, which are flammable. The positive electrode material is usually a transition metal oxide, which has a strong oxidizing property in the charged state, and is easily decomposed to release oxygen at high temperature. The released oxygen undergoes an oxidation reaction with the electrolyte, and then releases a large amount of heat.
Therefore, from the point of view of materials, lithium-ion batteries have a strong risk, especially in the case of abuse, safety issues are more prominent. In order to simulate and compare the performance of two different lithium-ion batteries under high temperature conditions, we conducted the following stepped heating test.