Summary of changes to the new IEC 62619 version,
IEC 62619,

▍What is CB Certification？

IECEE CB is the first genuine international system for mutual recognition of electrical equipment safety test reports. NCB (National Certification Body) reaches a multilateral agreement, which enables manufacturers to obtain national certification from other member countries under CB scheme on the basis of transferring one of the NCB certificates.

CB certificate is a formal CB scheme document issued by authorized NCB, which is to inform other NCB that the tested product samples conform to present standard requirement.

As a kind of standardized report, CB report lists relevant requirements from IEC standard item by item. CB report not only provides results of all required testing, measurement, verification, inspection and assessment with clearness and non-ambiguity, but also including photos, circuit diagram, pictures and product description. According to the rule of CB scheme, CB report will not take effect until it presents with CB certificate together.

▍Why we need CB Certification?

1. Directly recognized or approved by member countries

With CB certificate and CB test report, your products can be exported to some countries directly.

1. Convert to other countries certificates

The CB certificate can be directly converted to the certificate of its member countries, by providing the CB certificate, test report and difference test report (when applicable) without repeating the test, which can shorten the lead time of certification.

1. Ensure the Safety of Product

The CB certification test considers the product’s reasonable use and foreseeable safety when misused. The certified product proves the satisfactory of the safety requirements.

▍Why MCM? 

● Qualification: MCM is the first authorized CBTL of IEC 62133 standard qualification by TUV RH in mainland China.

● Certification and testing capability: MCM is among the first patch of testing and certification third party for IEC62133 standard, and has finished more than 7000 battery IEC62133 testing and CB reports for global clients.

● Technical support: MCM possesses more than 15 technical engineers specialized in testing as per IEC 62133 standard. MCM provides clients with comprehensive, accurate, closed-loop type of technical support and leading-edge information services.

IEC 62619: 2022 (the second version) released on 24 May 2022 will replace the first version published in 2017. IEC 62169 covers the safety requirements of secondary lithium ion cells and batteries for industrial use. It is generally considered to be a test standard for energy storage batteries. But in addition to energy storage batteries, IEC 62169 can also be used for lithium batteries used in uninterruptable power supplies (UPS), automatic transport vehicles (ATV), emergency power supplies and marine vehicles.
The major changes in IEC 62619: 2022 from that of 2017 are as follows:
Add requirements for moving parts;
Supplement the requirements for dangerous electrical parts;
Supplement the requirements for battery system design;
Add requirements for system lock;
Add requirements for EMC;
Add a heat spread test program that triggers thermal runaway by laser.
The changes to the standard will be explained in detail in the next journal.
There are six major changes, but the most significant one is to add requirements for EMC.
EMC testing requirements have been added to a growing number of battery standards, especially for large power and energy storage systems, including standard UL 1973 released this year. In order to meet EMC testing requirements, manufacturers should optimize and improve circuit design and use of electronic components, and conduct preliminary verification on trial-produced products to ensure that EMC requirements are met.