IEC 62619: Safety standards for lithium-ion batteries in industrial applications

IEC 62619 is an important safety certification standard for secondary lithium batteries and storage batteries used in industrial applications. It assesses the safety and stability of the batteries under different working conditions and was issued by the International Electrotechnical Commission (IEC). Here is a detailed interpretation of the IEC 62619 standard:

I. Standard Overview

Standard Name: IEC 62619, the full title is "Secondary cells and batteries containing alkaline or other non-acid electrolytes - Safety requirements for secondary lithium cells and batteries, for use in industrial applications".

Issuing authority: International Electrotechnical Commission (IEC).

Release Date: This standard was initially released on February 13, 2017 and became the international safety standard for energy storage batteries. Subsequently, on May 24, 2022, IEC released the updated version of IEC 62619:2022, which revised and revised the standard.

Nature: It falls under the category of voluntary certification, but is widely applied in multiple countries and regions, such as Europe, Australia, Japan, etc., serving as the basic standard for the battery system in the certification of power storage systems.

II. Scope of Application

The IEC 62619 standard is applicable to various types of industrial lithium batteries and battery packs, including but not limited to batteries used in fixed applications (such as uninterruptible power supplies UPS, energy storage systems) and batteries used for generating kinetic energy (such as for forklifts, automated guided vehicles AGVs, as well as railway and maritime vehicles). These batteries can exist in the form of individual battery cells or battery packs and are widely used in various industrial scenarios.

III. Main Content

The IEC 62619 standard specifies in detail the safety requirements that industrial lithium batteries and battery packs should meet during the design and manufacturing process. The main aspects include the following:

Electrical performance: This includes basic parameters such as the voltage, current, and capacity of the battery, as well as its performance under different operating conditions.

Mechanical performance: Evaluate the stability and durability of the battery under mechanical stresses such as dropping, vibration, and compression.

Environmental adaptability: Evaluates the working performance and safety of the battery under various environmental conditions such as different temperatures and humidity.

Safety performance test: This includes safety performance evaluations under extreme conditions such as external short circuit, overcharge, overdischarge, thermal abuse, and reverse charging, to ensure the safety and reliability of the battery in abnormal situations.

IV. Test Requirements

To obtain the IEC 62619 certification, manufacturers need to pass a series of rigorous testing and evaluation procedures, including but not limited to the following test items:

External short-circuit test: Simulate the reaction of the battery in the case of an external short circuit, ensuring that the battery will not catch fire or explode.

Impact test: Simulates the situation where the battery is subjected to impact during use or transportation, to test its safety.

Drop test: This simulates the situation where a battery falls from a certain height onto a hard surface, to test whether it will cause damage or pose safety risks.

Thermal abuse test: This test evaluates the performance of the battery in a high-temperature environment, ensuring its safe operation even under extreme temperatures.

Overcharge test: Simulate the overcharge situation during battery charging to verify whether the battery management system can effectively prevent the dangers caused by overcharging.

Forced discharge test: Simulates abnormal situations during the battery discharge process to test whether the battery management system can respond promptly and take appropriate measures.

Internal short-circuit test: By using a specific method to create an internal short circuit within the battery, observe the reaction and safety of the battery.

Heat spread test: Evaluates the fire spread of the battery in the event of thermal runaway, ensuring that the battery system can effectively control the fire.

V. Importance

The IEC 62619 standard holds significant importance for ensuring the safety and reliability of energy storage battery systems. It not only provides clear design and production guidelines for manufacturers, but also offers reliable product quality assurance for users. Additionally, this standard promotes international exchanges and cooperation in energy storage battery technology, facilitating the healthy development of the energy storage battery industry.

In conclusion, IEC 62619 is an important safety certification standard for secondary lithium batteries and storage batteries in industrial applications. Its strict testing requirements and wide application scope make it an indispensable part of the certification process for power storage systems.