Do you know why lithium battery so dangerous is?

Lithium is a particularly reactive metal with a silvery white appearance. It is very soft, extensible and flammable. Lithium metal belongs to the substance that releases flammable gases when exposed to water.

A metallic lithium properties:

(1) the water or damp air will release of flammable gas;

(2) the solid state, when the temperature exceeds its melting point 180 ℃, can burn;

(3) a powder, can burn in room temperature;

(4) can cause serious burns and corrosion.

B Lithium batteries or batteries belong to the ninth category of dangerous goods, and their danger depends on the lithium contained in them.

1.Lithium electricity Pool of highly flammable;

(2) the short circuit and overcharge, extreme temperature, error operation or other errors can be on fire;

(3) whether because the internal or external heating or physical impact, it can generate enough heat to make thermal runaway adjacent to the battery. Lithium batteries release of electrolytes mixed melting of lithium metal, accompanied by a large pressure pulse. Flammable electrolytes and molten lithium metal can produce explosive mixture;

(4) in grade C cargo agent halon 1301 (three fluorine methyl bromide extinguishing agent), cannot effectively control ignition of lithium battery.

1) lithium batteries the prevention methods of spontaneous combustion

Although you can think of some way to improve safety performance in terms of battery production, reduce the probability of fire, however, consumers should also pay attention to in the process of using the following several aspects:

Use the match the battery charger for the battery. In order to reduce costs, the market is filled with a lot of bad charger, although the price is low, but can't guarantee safety performance. The battery charger is essentially a small transformer, if do not match with the performance of the battery, will cause damage to the battery.

Don't usually use lithium batteries are best placed to solid insulation within a container, and avoid make it come into contact with water, or in more than 100 ℃ environment.

Lithium ion batteries Charge reasonable temperature range is 0 ~ 45 ℃, the discharge of the appropriate temperature range is - 20 ~ 60 ℃.If the temperature at which the battery is lower than 0 ℃, so in the positive will precipitate metal lithium batteries, makes cells more sensitive to vibration or impact, increase the risk.

To avoid the battery overcharge or excessive discharge, both are damaged inside the battery protection circuit.

Mass storage lithium ion battery, should pay attention to control the environment temperature, avoid impact force.

Don't open any case or remove the battery, otherwise it will cause the battery short circuit batteries.

2) lithium batteries the emergency disposal measures of spontaneous combustion

Although has adopted a series of preventive measures, the lithium ion battery still exists the possibility of spontaneous combustion. In the event of lithium batteries, spontaneous combustion emergency treatment usually follow the steps as follows:

First cut off power supply. Any abnormal situation, should in the first place to cut off the power supply.

When batteries in spontaneous combustion, should be immediately available for battery for continuous cooling process, save water is the ideal solution. If the fire is larger, can use ABC dry powder fire extinguishers or type carbon dioxide fire extinguisher to extinguish fire, and then with water to cool the damaged battery, and check the spontaneous battery has every 5 min, if is still hot, continued to water to cool the battery, until the complete cooling.

If possible, remove the damaged cells to the safety of the open area, and quickly evacuated the people around.

?Under the conditions allow, quickly remove the spontaneous combustible around the battery.

Don't for lithium battery with ice cooling. Because can lead to internal heat, continuous high temperature further chemical reactions, the internal temperature will rise sharply, electrolyte gas accumulation in great quantities, causing the battery explosion, the power and destructive than batteries "calm" spontaneous combustion is more terrible.

Even appeared a naked flame, should avoid to use foam extinguisher, spewing bubble adhesion formation on the fringes of the battery thermal insulation, thereby increasing chemical reaction, generate more heat.

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