Is the lithium iron phosphate cell safe under overcharge conditions?,
battery,

▍What is CE Certification?

The CE mark is a “passport” for products to enter the EU market and the EU Free Trade Association countries market. Any stipulated products (involved in the new method directive), whether manufactured outside the EU or in EU member states, in order to circulate freely in the EU market, they must be in compliance with the requirements of the directive and relevant harmonized standards before being placed on the EU market , and affix the CE mark. This is a mandatory requirement of EU law on related products, which provides a unified minimum technical standard for the trade of products of various countries in the European market and simplifies trade procedures.

▍What is CE directive?

The directive is a legislative document established by the European Community Council and the European Commission under authorization of the European Community Treaty. The applicable directives for batteries are:

2006/66 / EC & 2013/56 / EU: Battery Directive. Batteries that comply with this directive must have a trash can mark;

2014/30 / EU: Electromagnetic Compatibility Directive (EMC Directive). Batteries that comply with this directive must have the CE mark;

2011/65 / EU: ROHS directive. Batteries that comply with this directive must have the CE mark;

Tips: Only when a product complies with all CE directives (the CE mark needs to be pasted), can the CE mark be pasted when all the requirements of the directive are met.

▍The Necessity of Applying for CE Certification

Any product from different countries that wants to enter the EU and the European Free Trade Zone must apply for CE-certified and CE marked on the product. Therefore, CE certification is a passport for products entering EU and the European Free Trade Zone.

▍Benefits of Applying for CE certification

1. EU laws, regulations, and coordinate standards are not only large in quantity, but also complex in content. Therefore, obtaining the CE certification is a very smart choice to save time and effort as well as to reduce the risk;

2. A CE certificate can help earning the trust of consumers and market supervision institution to a maximum extent;

3. It can effectively prevent the irresponsible allegations situation;

4. In the face of litigation, the CE certification will become legally valid technical evidence;

5. Once punished by EU countries, the certification body will jointly bear the risks with the enterprise, thus reducing the risk of the enterprise.

▍Why MCM?

● MCM has a technical team with up to more than 20 professionals engaged in the field of battery CE certification, which provide clients with faster and more accurate and latest CE certification information;

● MCM provides various CE solutions including LVD, EMC, battery directives, etc. for clients;

● MCM has provided more than 4000 battery CE tests worldwide till today.

According to previous statistics, 80% of spontaneous combustion accidents of new energy vehicles occur
during charging or one hour after being fully charged. Among the many reasons for the fire and explosion of lithium batteries, overcharging is one of the most important.
The lithium iron phosphate battery is recognized by the industry as a battery with high safety. In order to
verify the safety of its overcharge, the editor chooses a lithium battery to perform an overcharge test to see if it is true.
Overcharge TestingThe Lithium iron phosphate cell used in the tested is 3.2V/100Ah with aluminum enclosure. To maximize overcharge state of the cell as much as possible, we have already used 2 times the nominal voltage(6.4V) as charging voltage and 2C as charging current.Step Testing Method in the Process
Conclusion:
It can be seen from the test results that this overcharge test method effectively simulates the situation that can occur when the cell is overcharged. The aluminum-shell lithium iron phosphate battery has undergone
processes such as swelling, exhaust, heating, and damage without fire (visible flame) and or explosion
(complete disintegration) during overcharge. In many repeated tests and previous tests, it is concluded that
lithium iron phosphate cells are relatively safe under overcharged conditions.