Производственная мебель и системы хранения Hoffmann Group 2026 - страница 630

GBP 57 STORAGE OF LITHIUM-ION BATTERIES Lithium-ion batteries are very high-power energy storage devices. Due to their compact design they are increasingly being used. But however handy and efficient this battery technology may be, it also poses latent safety risks which should not be underestimated. With lithium-ion batteries there is an increased risk of fire and of bursting: due to the very high energy density, under certain conditions they may suffer spontaneous combustion or become unstable and explode due to overheating. Electrical Deep discharge Mechanical Thermal overloading damage overloading Lithium-ion batteries can cause fires. During charging Unstable cell. In combination with Due to external °C and discharging. the high energy sources of heat and The reasons for this are: density of the battery. energy. Double protection Protection of the inside space against events on the Protection of the outside space against events on the inside outside Additional fire protection tests have shown that the safety cabinets have a fire In the event of a fire outside the safety cabinet the lithium-ion batteries resistance time of more than 90 minutes. They thus offer a high degree of stored within it are protected against overheating for a period of 90 minutes. protection in the event that a fire occurs inside the cabinet. This prevents the batteries stored within the cabinet spontaneously catching fire, becoming unstable or exploding. 3-stage warning system with the option of connecting to a permanently staffed building control room or fire alarm switchboard: The fire resistance test under the conditions specified in EN 14470-1 ■ Warning message: Internal temperature over 50°C showed a fire resistance performance (type 90) for the cabinet. → Warning message to a central control room is triggered, warning lamp is activated, alarm buzzer with a slow cycle interval, Safety cabinets with a fire resistance time of at least 90 minutes socket strip is de-energised. rank as a storage section to TRGS 510 – thus satisfying the conditions ■ Alarm stage 1: The start of smoke evolution within the cabinet specified in VdS 3103:2019-06. → Warning lamp is activated continuously, alarm buzzer Tested and certified in accordance with VDMA 24994 by means of with a medium cycle interval, technical ventilation is a real fire test with lithium-ion cells inside the cabinet. switched off. ■ Alarm stage 2: Internal temperature over 70°C + smoke → Warning lamp is activated to be flashing, alarm buzzer with a quick cycle interval. The optionally available fire suppression system is triggered. That means: Perfect protection when batteries are in storage, and especially under conditions of unsupervised charging: ■ Allows sufficient time for the emergency services and fire brigade to initiate evacuation and fire extinguishing measures. ■ Sufficient time for personnel to escape. ■ The alarm forwarding ensures a quick and an appropriate response in the event of fire. 98 630