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Five ways to keep power batteries out of thermal runaway!

2023-04-18

Five ways to keep power batteries out of thermal runaway!

Thermal runaway means that the battery generates a large amount of heat during operation and the temperature rises rapidly beyond the safety range, thus causing a fire or explosion. As one of the core components of a new energy vehicle, the power battery provides electricity to ensure the normal operation of the electric vehicle, and whether it can be kept away from thermal runaway directly affects the safety, service life, charge and discharge times of the power battery. How to keep the battery away from thermal runaway is a common concern of new energy vehicle users. To this end, TRUMONY has compiled the following methods to ensure the safety of the power battery and avoid thermal runaway from happening.

1. Adopt liquid cooling technology
The liquid cooling system can be highly integrated with the battery pack, easy to install on site, occupying a small area, without worrying about dust, water vapour condensation and other problems. In the event of a thermal runaway, liquid cooling solutions can rely on a high flow of cooling media to force the battery pack to dissipate heat and redistribute heat between battery modules, which can quickly inhibit the continuous deterioration of thermal runaway and reduce the risk of runaway. Liquid-cooled panels, which are more commonly used in new energy vehicles, work by transferring excess heat generated by battery operation through contact with the surface of the plate type aluminium device. The liquid-cooled system uses the large heat transfer coefficient of liquid flow to transfer high levels of heat, which is eventually carried away by the coolant passing through the internal flow channels of the device.
2. Battery Management System
A battery management system (BMS) is a system that monitors the status of the battery. It monitors parameters such as temperature, voltage, current and capacity of the battery and ensures its safety by controlling its operating status.
3. Protection measures
In addition to controlling the temperature of the battery and using the BMS, other protective measures are required to ensure the safety of the battery. For example, guards can be placed around the battery to prevent it from colliding with other objects. Guards can also be installed to avoid short-circuiting and overcharging of the battery.
4. Choose a high-quality battery
It is advisable to buy original chargers and batteries as these products have undergone rigorous testing and verification and are of safer and more reliable quality. Moreover, due to the complex internal structure of lithium batteries, if you are not a professional, do not dismantle the batteries at will to avoid damaging them and causing safety accidents. But the use of good quality batteries, but also only passive protection, and can actively protect the safety of the driver, the current stage or driving safety awareness, "safe driving" "active defensive driving" is the most important line of defence to protect the safety of drivers and passengers.
5. Correct use of batteries
When using power batteries, there are some basic rules to follow. For example, avoid leaving batteries in hot or cold environments for long periods of time, avoid contact with water or other liquids, avoid charging and discharging batteries in hot or humid environments and do not overcharge them. The battery's charge level and state of charge should be checked regularly for wear and tear, damage or other abnormalities. If abnormalities are found, you should contact the manufacturer or a professional repairer for repair or replacement in order to avoid accidents. It is also very important to carry out regular maintenance on the power battery, which needs to be replaced in time for ageing.
Translated with DeepL

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