Lithium battery in the truck self-ignited, Shenzhen Safety Supervision reminds safety production and management

At 4:42 pm on April 22, a truck of a lithium battery company in Pingshan District was unloaded at a bus stop in Tangjia Community, Fenghuang District, Guangming District. Due to improper operation of the workers, the lithium battery inside the vehicle was subjected to crushing friction Self-ignition. Fortunately, the fire was put out after half an hour of intensive treatment by fire control, safety supervision and community work stations.

Spontaneous combustion can occur when squeezed by friction? Lithium batteries are so easy to "fire"? In fact, this is related to its characteristics.

Lithium batteries have the advantages of high energy density, long life, small size, light weight, etc., and are widely used in various types of consumer electronics, mobile power, and new energy vehicles, but at the same time, their chemical properties are very lively and slightly inadvertent (Such as short circuit, high temperature, squeezing and impact, overcharging, etc., may lead to uncontrolled fire or even explosion.

Lithium batteries are generally small in size, but their power is not small. Therefore, whether it is used or stored, the safety management methods and specifications of lithium batteries must be strictly observed.

Enterprise use and storage of lithium batteries

Control points

First, the use of lithium batteries

1. Lithium battery users should strictly control the storage of lithium batteries.

2. The production workshop should not store batteries and batteries that exceed the usage of the shifts, and sort them, sort them, and store them in sections.

3. The lithium battery should be equipped with an accident battery disposal bucket and fire extinguishing equipment.

4. After the work is finished, the lithium battery in the workshop should be recycled to a safe area for storage.

5. If the battery usage is too large, it should be set in a place that meets the safety requirements for lithium battery storage.

Second, the storage of lithium batteries

1. The battery and battery storage warehouse should be set up independently. The storage place should be marked with a prominent “No Fireworks” sign. It is forbidden to stack combustibles and flammable materials around.

2. The temperature of the battery and battery warehouse should be controlled within the range of 20±5°C, the maximum temperature should not exceed 30°C, and the relative humidity should be no more than 75%. Keep the warehouse clean and dry, well ventilated, and do not store other items.

3. The battery and battery warehouse should be equipped with smoke detector and temperature alarm device. The alarm signal should be transmitted to the 24-hour manned place.

4. The battery and battery warehouse should be equipped with an independent external air exhaust device. The accident air exhaust device should be interlocked with the smoke and temperature alarm device.

5. The battery and battery should be placed neatly, not stacked too high, and the storage facilities should be made of non-combustible materials, and take anti-static measures.

6. The positive (negative) pole position of each battery (cell) must be insulated to prevent short-circuit protection.

7. The battery warehouse should be equipped with an automatic sprinkler system.

8. The battery should not be stored at full capacity. It is recommended to store 30% of the power.

9. The semi-finished battery should be equipped with a protective plate.

10. Dispose of used batteries after discharge treatment and store them separately.

11. The area of each fire compartment of the battery and battery warehouse shall not exceed 250 square meters.

12. The battery and battery warehouse should be equipped with a sufficient number of spherical dry powder automatic fire extinguishers or sprinklers.

13. The battery and battery warehouse should be equipped with 2 fire blankets and 1 special bucket for accident battery treatment.

Residents' Safe Use of lithium battery Guide

1. Do not use a charger that is not specified and that does not have a safety certificate to charge the battery.

2. Do not place the battery near a heat source or a source of ignition.

3. Control the amount of charge and do not let the battery overcharge.

4. It is forbidden to strike the battery and let the battery fall, so as to avoid artificial short circuit.

5. During use, charging or storage, if the battery is found to be hot, odor, discoloration, deformation or other abnormalities, stop using it.

6. When using, pay attention to the positive and negative poles of the battery.

7. Do not disassemble or dissect the battery core under any circumstances. Disassembly and dissection may cause a short circuit inside the core.

The page contains the contents of the machine translation.