From：CTECHI GROUP Limited Release time：2018-12-12
Overview：The first lithium battery in the world was born in March 1976 in the United States. An engineer of an oil company used lithium metal as the positive electrode, titanium sulfide as the negative electrode, and relying on the movement of lithium ion as the positive and negative electrode, formed an electric current in the battery, completed the charging and discharging process, and formed an electric energy interaction with the outside world.
The first lithium battery in the world was born in March 1976 in the United States. An engineer of an oil company used lithium metal as the positive electrode, titanium sulfide as the negative electrode, and relying on the movement of lithium ion as the positive and negative electrode, formed an electric current in the battery, completed the charging and discharging process, and formed an electric energy interaction with the outside world.
After research, the energy storage capacity and charging and discharging time of lithium batteries are much better than those of other rechargeable batteries at that time, which aroused great interest. After the 1980s, the prototype of lithium batteries has been strengthened, its stability, volume and manufacturing technology have been greatly enhanced, and lithium batteries have been widely used in mobile digital and even electric vehicles. Field. However, with the expansion of the scope of application, the hidden dangers of lithium batteries are gradually surfacing.
Is lithium battery toxic?
1. Electrolyte solution is toxic. Electrolyte is an organic volatile liquid with obvious corrosiveness. Inhalation of volatile gas for a long time is harmful to respiratory tract.
2. Lithium battery consists of positive powders, negative powders, conductive powder, binder powder, electrolyte, organic solution and other components. Cobalt in positive powders belongs to toxic metal substances, organic dispersants belong to toxic organic solvents, and electrolyte is the most toxic and corrosive component of lithium batteries, which has a direct impact on human body.
Will lithium batteries explode if they are punctured?
The answer points.
First of all, if lithium ion is not separated from the negative electrode (lithium ion is not completely crystallized by carbon bonding), lithium ion is in a stable state, and will not react with air due to lithium. Even lithium precipitation is not the main cause of combustion. The reason for spontaneous combustion is that the battery has been destroyed.
1. Short circuit of battery caused by metal weapon.
2. Battery short circuit is caused by damage of diaphragm caused by external force.
When DC short circuit occurs, the heat is huge, which causes the thermal runaway of batteries. When the thermal runaway occurs, the temperature will rise to more than 300 degrees Celsius in milliseconds. The main flammable substance in lithium batteries is actually electrolyte. In the absence of flame retardants (in fact, there are flame retardants in all products), the ignition point of the electrolyte is about 130 degrees Celsius. It has been found that large-scale electric vehicle accidents, in the final analysis, are caused by battery damage, electrolyte outflow and combustion.
Iron-lithium batteries that meet the requirements of our country should not be burned or exploded after needling. This experiment has done a lot, basically no objection, and even I can continue to use some products after needling. Cutting further increases the destructiveness. I have tried this experiment before, and the battery has not burned or exploded. In recent years, some third-party inspections, the supervisory authorities asked to unravel batteries to see if there is an internal and parallel structure. The standard is whether there is only one battery in the unified electrolyte structure. We have repeatedly separated the batteries for explanation, and there are no safety problems.
Therefore, iron-lithium battery products that meet the national standards should not spontaneously ignite after cutting because of their chemical characteristics and the protection after adding flame retardant. Other products are not guaranteed. Of course, because I am mainly responsible for iron and lithium here, I am not familiar with the standards of manganese and lithium products, and I hope that the peers will give additional answers to correct them. In theory, the metal foreign body puncture test should be the basis of the foundation.
We CTECHI Group is a leading durable 1.5V primary cylindrical Li-FeS2 battery, best high voltage 12.8v secondary lifepo4 battery pack, high energy 33.5AH secondary Li Ion Battery pack, durable 3v Lithium Manganese Dioxide battery exporter and manufacturer in China, we are not only focus on provide single cell but provide battery assembly and do OEM service for customers, CTECHI has captured 80 percent of overseas markets in the past 16 years with more than 2000 reliable customers in our customer management system, which has been being one of the leading enterprises with the most complete category in China's battery industry. If you have any request or want to purchase 12v 200ah lifepo4 battery, please contact us. We will provide battery solution and quotation for you immediately.