Nowadays, the use of electric vehicles is increasing, and the introduction of new energy vehicles with pure electric seems to be an important development direction in the future. According to current technology and materials, lithium batteries are the best solution, but lithium batteries also have their own shortcomings. Board, that is, in the cold, the senior activity is not high, battery life and charging capacity will be limited.
Some people have tested that in the ambient temperature below 10 degrees Celsius, lithium-ion batteries are difficult to achieve fast charging, and in many areas in winter, the temperature is zero, not only charging, but also daily use, the vehicle's cruising range will be Greatly reduced. Therefore, many cars will be equipped with heating devices to ensure the normal use of the vehicles. However, these heating devices are cumbersome and not too efficient, and the action time is longer.
A team at the Electrochemical Engine Research Center at Penn State University has developed a new battery system that can heat itself to solve the problem of low temperature in cold conditions. His principle is also self-heating. It only works more quickly. Better battery savings. With this technology, the battery can be charged in 15 minutes even when the ambient temperature drops to minus 43 degrees Celsius.
The pool connects one end of a nickel foil to the negative pole, and the other end extends to the outside of the battery to form a third pole port. The temperature sensor connected to the switch detects the current through the nickel when the ambient temperature is lowered to about 25 degrees Celsius. Resistance to resistance causes the nickel piece to heat up and provide temperature to the battery from the inside. Once the temperature rises above room temperature, the battery-equipped switch automatically transfers the current to directly charge the battery.
Researchers claim that their prototype battery can withstand 4,500 cycles of 15 minutes of fast charging at 0 degrees Celsius, and the energy loss is only 20%. This means that the battery life will reach 12.5 years.
However, this technology has not mentioned whether it is possible to preheat the vehicle battery before driving. We know that when the temperature is very low, the vehicle battery has low lithium ion activity and serious endurance.
