Analysis of the New Released GB/T 36276-2023,
GB/T 36276-2023,

▍Certification Overview

Standards and Certification Document

Test standard: GB31241-2014: Lithium ion cells and batteries used in portable electronic equipment―Safety requirements
Certification document: CQC11-464112-2015: Secondary Battery and Battery Pack Safety Certification Rules for Portable Electronic Devices

Background and Date of implementation

1. GB31241-2014 was published on December 5^th, 2014;

2. GB31241-2014 was mandatorily implemented on August 1^st, 2015. ;

3. On October 15th, 2015, Certification and Accreditation Administration issued a technical resolution on additional testing standard GB31241 for key component “battery” of the audio and video equipment, information technology equipment and telecom terminal equipment. The resolution stipulates that the lithium batteries used in the above products need to be randomly tested as per GB31241-2014, or obtain a separate certification. 

Note: GB 31241-2014 is a national compulsory standard. All the lithium battery products sold in China shall conform to GB31241 standard. This standard will be used in new sampling schemes for national, provincial and local random inspection.

▍Scope of Certification

GB31241-2014 Lithium ion cells and batteries used in portable electronic equipment―Safety requirements
Certification documents is mainly for mobile electronic products that are scheduled to be less than 18kg and can be often carried by users. The main examples are as follows. The portable electronic products listed below do not include all products, so products not listed are not necessarily outside the scope of this standard.

Wearable equipment: Lithium-ion batteries and battery packs used in equipment need to meet standard requirements.

▍Why MCM?

● Qualification recognition: MCM is a CQC accredited contract laboratory and a CESI accredited laboratory. The test report issued can be directly applied for CQC or CESI certificate;

● Technical support: MCM has ample GB31241 testing equipment and is equipped with more than 10 professional technicians to conduct in-depth research on testing technology, certification, factory audit and other processes, which can provide more accurate and customized GB 31241 certification services for global clients.

Lithium-ion Batteries for Power Storage (GB/T 36276-2023) was released at the end of December 2023 and will be implemented on July 1, 2024. With the rapid development of the lithium-ion battery energy storage market in recent years, accidents have also been occurring frequently. Based on this, compared with that of the 2018 version, the overall structure of the new version remains basically unchanged, but the technical requirements are stricter, and the testing requirements are more comprehensive.
The hierarchical structure of the energy storage system is as follows: cells are connected in series and parallel to form a cell module, cell modules are connected in series and parallel to form a cell cluster, cell clusters are connected in parallel to form a battery energy storage system, and battery energy storage systems are connected in parallel to form a battery energy storage station. The performance and safety of the battery system are the cornerstone of the operation of the energy storage station. GB/T 36276-2023 covers key working parameters and performance safety from the level of cells, modules to clusters, and clearly specifies requirements for each level of batteries.Due to space constraints, we will present the key changes between the new and old versions in two parts. This issue focuses on the key changes in cells.