A research report pointed out that when a lithium-ion battery is quickly charged at an ambient temperature below 50 degrees Celsius, the battery activity will be greatly reduced. A study by Pennsylvania State University found that during the charging process, if the lithium ion battery is continuously heated at 140 degrees Celsius for 10 minutes and then quickly cooled, the battery can be fully charged more quickly. In addition, this charging method can be used to charge the battery 2500 times.
Under normal circumstances, rapid heating and cooling the battery will cause the battery to short circuit, but the use of a thin nickel foil layer can absorb excess heat and evenly distribute the charge throughout the battery pack. Specifically, it uses a thin nickel foil with a temperature sensor, connects the sensor to the switch, and controls the switch to make current flow through the metal foil, thereby quickly heating the battery, and then relying on the vehicle's cooling system to quickly cool the battery.
It is worth noting that there are certain risks in heating batteries. Therefore, the industry currently bans this measure, and the program will not be mass-produced in a short period of time. Researchers said that in the field of batteries, this extreme behavior of heating the battery to above 60 degrees Celsius is often prohibited. Some people think that doing so will cause damage to the battery and significantly reduce battery life.
Compared with the traditional on-board charging system, the temperature-controlled charging method of Pennsylvania State University takes less time and is more practical. However, until the risks of battery short circuit are resolved, we cannot yet see the mass production of this new technology.
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