Aerosol Based Automatic Fire Suppression System For Charging Storage Batteries

Aerosol Automatic Fire Protection For Changing and Charging Storage Batteries

Introduction of electric powered vehicles

In trading and industrial activities, electric powered vehicles such as fork lift trucks and pallet trucks (industrial trucks) or mechanical sweepers (cleaning equipment) are powered by accumulator batteries. To maintain the operational readiness of these vehicles, the accumulator batteries - referred to as batteries below - must be charged at regular intervals and maintained appropriately.

Why fires happen in charging storage batteries?

Although developments in recent years have seen more efficient and lightweight batteries available (e.g. lithiumion), electric powered vehicles normally use lead acid batteries. The electrolyte used in these batteries is diluted sulphuric acid. During the charging and discharging processes, the battery electrodes produce hydrogen gas and other by-products. This creates a potential explosion hazard which increases if the ventilation is insufficient or poorly designed.

Meanwhile the chargers for industrial trucks and cleaning equipment and electric road vehicles also needed protection.

How to choose the fire extinguisher?

• FireLess 0.3 aerosol fire extinguishing device was adopted, the dose of each fire extinguishing device was 0.01kg, and the discharging time of the fire extinguishing device was less than 20s.
• If you need a warning device to feedback the fire signal to the driver, you can also equipped with CSIC1161(Fireless 0.5 sensor). This fire warning and extinguishing device has the function of early warning of battery fire. Before the battery open fire is generated, it sends out early warning signals to the man-machine interface (button/monitoring interface) in the driver area. CSIC1161(Fireless 0.5 sensor)fire warning and fire extinguishing device has the function of automatically starting the fire extinguishing device. It can automatically start the fire extinguishing device to extinguish the fire in case of a lithium battery fire. At the same time, the man-machine interface (button/monitoring software) in the driver area receives the feedback signal of automatically starting the fire extinguishing device.

Specification

Risks in battery that cause fires:

Fires in battery charging installations are usually attributable to technical deficiencies in the electrical equipment and to failure to observe safety measures.

Examples include:

• combustible materials stored or dumped in the immediate surroundings;

• lack of servicing and maintenance leading to:

– increased contact resistance and degradation of insulation on connectors and charge cables respectively;

– soiling and debris build up within the machine causing overheating;

• insufficient ventilation;

• overload of the power outlet;

• missing or insufficient collision/impact protection.