The secret of lithium battery

The lithium battery is a kind of lithium metal or lithium alloy anode materials with the use of water of the electrolyte solution. With the development of microelectronics technology in the 20th century, increasing miniaturization of equipment, puts forward high demands on the power supply. Lithium electricityThe use of the pool has become mainstream, but people know little about it.

Lithium battery is how to store charge? Why would some lithium battery explosion? How to prolong the life of a lithium battery that is a matter of concern to the people.

The working principle of the lithium battery

Lithium ion batteriesThe working principle of refers to the charge and discharge principle.

When charging the battery, the battery has lithium ions generated in the anode, the generated lithium ions through the electrolyte to the negative movement. As a cathode carbon layer structure, it has many pores, arrived in the cathode of lithium ion is embedded into the microporous carbon layer, the embedded lithium ion, the more the higher the charge capacity.

Likewise, when to discharge the battery (i.e., we use the battery process), embedded in the cathode carbon layer of emergence, lithium ions and movement back to the anode. Back to the anode of lithium ion, the more the higher the discharge capacity. We usually mean by battery capacity is the discharge capacity.

It is not hard to see, in the process of charging and discharging lithium ion batteries, lithium ion in the motion state from the positive and negative to the anode. If we compared the image of the lithium ion battery as a rocking chair, rocking chair at both ends of the poles for the battery, and lithium ion like excellent athlete, running to and fro in the ends of the rocking chair. So, the experts gave lithium ion battery - swing a cute name.

Why is easy to explode after lithium battery by weight?

When the battery is under a certain pressure, the shape of the battery under the action of external force changed. Like this, the concentrated stress cells are negative forced to bend, until is contact between the cathode, the battery short circuit. Electronic sharp release in this moment, a lot of heat. In the process of this brief, electrolyte into gas, make the cell swelling. Around the battery of the foil bag burst open, an electric spark ignites the evaporation of electrolyte in the air, the whole battery pack over short circuit caused by the fire and fever. The cells around the deflagration individually, until the whole battery completely.

Why excessive charge explosion can make inferior lithium battery products?

After filling, everywhere on the pole piece is acicular lithium metal crystallization, pierced diaphragm micro short circuit happens. Light, intensifying self-discharge; Or dendrite short circuit current caused by the battery temperature rise sharply, the electrolyte decomposition gasification. This kind of situation, whether high temperature materials burning explosion, or the shell was broken, the air inside with lithium oxide, are burning explosion. To sum up, the death of lithium electricity is put and overcharge. The solution is to give every single core supporting protection plate.

How to correctly use lithium battery?

1. Avoid completely discharge power (used to black screen);

2. Often to the lithium battery charge and discharge, charge when not put or use an external power source, charging while using, continue to use after the completion of external or charge, all the battery will not cause additional loss;

3. When not in use for a long time, should remove the lithium battery, in a cool and dry place .Don't freeze, avoid water erosion. Avoid car use in high temperature. Such as long time preservation, placed after the battery to 40%;

4. As a laptop users, if most of the time is to use a fixed power supply, can remove the battery in shade, but this is only for battery such as the improvement of environmental factors such as temperature, humidity, and protect the battery cover, metal contact concept, is not recommended because of using the power converter, frequent remove battery;

5. Avoid buying spare lithium batteries for storage, because the battery even if does not use, its service life is also in the natural fracture, so the battery within the limited time to live, utmost ground USES to manifest the value of the battery.

The page contains the contents of the machine translation.