News : Lithium-Ion batteries: temperature issues

Know the impact of heat to guarantee the integrity and proper functioning of your batteries

When the heat is oppressive, whether inside a van in the sun or a car in a heatwave, the temperature can quickly reach highs, sometimes up to 80°C.

But did you know that lithium-ion batteries can also sense heat?

Lithium-Ion batteries and heat

Lithium-ion batteries are sensitive to temperature variations. When exposed to excessive heat, they can experience thermal runaway, a dangerous phenomenon that we strive to avoid at all costs. Thermal runaway occurs when the temperature inside the battery rises uncontrollably. This reaction can be triggered by several factors, including:

Mechanical abuse

Shocks or poor handling can lead to cell deformation or even rupture.

Electrical abuse

Overcharging or discharging the battery can cause thermal runaway.

Thermal abuse

Excessive temperatures, such as those reached in an overheated van, can also trigger this runaway.

The importance of thermal management

To avoid thermal runaway, effective thermal management is crucial. This is where the Battery Management System (BMS) comes in, a critical battery component that monitors and regulates cell temperature. The BMS takes measures to prevent overheating and ensure battery safety.

How to avoid thermal runaway as a supplier?

As a supplier, TecSup ensures that preventive measures are implemented, in particular:

Tests before leaving the factory

Perform rigorous testing on welds, cells and load cycles.

Mitigation system

Implement a mitigation system to manage thermal runaway at the level of individual cells.

Compliance with safety standards

Ensure that the product complies with safety standards, thus providing a reliable product with a controlled level of risks.

Advice for the industrial or individual user

For industrial or private users, it is important to:

Monitor temperature

Avoid exposing the battery to temperatures above 75 degrees Celsius, as this significantly increases the risk.

Choosing a suitable charger

Use a charger compatible with the battery to avoid overcharging or overdischarging.

Store carefully

Do not store a discharged battery for long periods of time, as prolonged deep discharge may cause a fire.

By understanding the risks associated with heat and taking preventative measures, it is possible to enjoy the benefits of lithium-ion batteries safely.

Free your Energy !