Detailed explanations about the safety of lithium batteries

Lithium batteries can be divided into two categories, namely lithium metal batteries and lithium batteries. In the meantime, the lithium metal battery is a new type of battery born in 1996, and its safety, specific capacity and self-discharge rate are better than the recent lithium battery, but currently only a few countries can manufacture this battery. The largest sales volume on the market is lithium batteries. Lithium atom is the lightest alkali metal element. If it is used improperly, it will cause safety damage such as burning and explosion. In order to guard against the safety issues that may be caused by the use of lithium batteries, corresponding preventive measures have been taken in the storage structure of lithium batteries and the manufacture of the casing to guard against the damage of the casing and the explosion of oxygen from entering it. Lithium batteries have high technical requirements for charging and discharging. Overcharging or overdischarging may cause the shell to split and cause an explosion. In addition, lithium batteries also have relatively high requirements for manufacturing processes, shell welding, and operating ambient temperature. Careless processing or use may cause safety problems, and even cause great damage to humans and industries. For example, after the Apple mobile phone in the United States implemented the service of lowering the price and replacing the battery, there was an explosion of the iPhone battery in China. The reason was that a man put the battery in his mouth before replacing the battery at the counter in order to check the authenticity of the battery. With a bite, a fireball burst out instantly. A similar case also occurred on Samsung's note7 mobile phone. This phone was recalled shortly after it was launched due to multiple battery explosions. The real reason for the explosion of the mobile phone was caused by the lithium battery. Therefore, lithium batteries need to pass many experiments before being put into use, and imitate the misuse that lithium batteries may encounter in order to test the safety of the battery in operation. In addition to the external force kneading the lithium battery to form a shell damage and cause an explosion, it can also explode due to improper charging. For example, when a short circuit occurs in the power supply of a mobile phone, because the internal resistance of the battery itself is very small, the current that occurs immediately after the short circuit is large, causing the battery to rapidly heat up and explode. At present, high-capacity power banks made of lithium batteries are very popular among customers. Because the larger the lithium battery capacity of the power bank is, the more power it can store, and the safety hazard in use also increases. If the shell is kneaded or dropped while carrying the power bank, it may cause an explosion, and the greater the capacity of the lithium battery, the greater the power of the explosion. Especially in an airplane, a lithium battery explosion will endanger the lives of all passengers. In recent years, air crashes caused by passenger explosions on airplanes with lithium batteries have occurred frequently. The civil aviation departments of various countries have implemented strict regulations on the capacity and quantity of lithium battery products such as power banks carried by passengers to ensure the aircraft’s safety. Flying safely. The mobile phone family often can't stand loneliness during the charging process and will use the mobile phone continuously. This is actually a behavior that is not conducive to safety! One is to use the mobile phone while charging to simply form a short circuit of the mobile phone's power supply and form an electric shock. During the charging process, making a phone call or surfing the Internet will complicate the mobile phone's operating circuit, and then increase the risk of short circuit or error in the mobile phone circuit, and simple electric shock. The second is that the body will have a fever when the mobile phone is charging. When using the mobile phone to surf the Internet or make calls, the operating circuit of the mobile phone and the CPU will generate heat, and the heat overlaps together. It is very simple that the temperature of the lithium battery rises rapidly, and then causes an explosion or combustion. . The third is that the charging time and frequency will affect the battery life. Many mobile phones will not punctually block the charging circuit when answering the phone during charging. This leads to frequent charging, and the extension of the charging time will affect the battery life. The engineer of the test arrangement tells you: You only need to grasp the characteristics of lithium batteries to ensure the safety of mobile phones. Mobile phone charging tips 1. Don't wait until the battery is completely exhausted before charging the phone. 2. Don't overcharge the battery, especially don't overcharge the battery from a very low share at one time. 3. Try to keep the battery power share between 45% and 75%. Disclaimer: Some pictures and content of articles published on this site are from the Internet. If there is any infringement, please contact to delete. Previous: How to use lithium battery cells