2016年9月26日星期一

Battery potential has limits

Now, companies are digging battery energy density potential and pursue the positive electrode, a negative electrode, a battery separator are made thinner, the indicators have tended to limit.
For example the battery separator, the separator is now mainstream high-end mobile application has reached 7 microns, while the theoretical limit is 3 microns. This battery safety management of a growing challenge.
External heating can also lead to lithium-ion battery to overheat and ultimately catch fire. September 20, South Korea, "Chosun Ilbo" reported that China had exposed two cases of mobile phone fire incident by their experiments detected, the suspected cause of the fire China Note7 phone external heating, and is highly suspected Induction heating caused a fire. The report also said that Samsung considering suing two making a false explosive Chinese consumers.

Now cell phone battery is a lithium-ion battery is divided into cathode, anode, electrolyte three parts, positive and negative electrodes separated by a membrane. Charging the lithium ion from the positive to the negative movement embedded in a graphite layer. Discharge, lithium ions from the negative electrode graphite crystal surface is moved out of the positive electrode, so the same as LiFePo4 battery pack, it can be used in portable solar power generator. If the battery positive and negative direct contact with the battery internal short circuit and will appear combustion or explosion.
Lithium-ion battery successfully developed in 1992 by Sony, its practical mobile phone, the weight and volume of the notebook computers, calculators and other portable electronic devices is greatly reduced. Although the application more than 20 years, but any one of the manufacturers are afraid to absolutely guarantee the absolute safety of its battery, fire incidents have occurred occasionally.

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