TU-TESL

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It has been reported that the battery activity will be greatly reduced when lithium ion is charged rapidly at an ambient temperature lower than 50 ℃. According to the research of Penn State University, if the lithium-ion battery is heated for 10 minutes at a high temperature of 140 ℃ and cooled rapidly during the charging process, the battery can be charged more quickly. In addition, the battery can be recharged for 2500 times by this charging method. In general, rapid heating and cooling of the battery will lead to short circuit of the battery, but the use of thin nickel foil layer can absorb the extra heat and make the charge evenly distributed throughout the battery pack. Specifically, a thin nickel foil with a temperature sensor is used to connect the sensor to the switch, and the current flows through the metal foil through the switch control, so as to rapidly heat the battery, and then rely on the vehicle's cooling system to rapidly cool the battery. It is worth noting that there are certain risks in heating batteries. Therefore, this measure is prohibited in the industry and will not be mass produced in a short period of time. In the field of battery, the extreme behavior of heating the battery to above 60 ℃ is often prohibited, the researchers said. Some people think that this will cause damage to the battery and greatly reduce the battery life. Compared with the traditional vehicle charging system, the temperature controlled charging method of Penn State University takes less time and is more practical. However, we can't see the mass production of this new technology until the risk of battery short circuit is solved.