As the heart of electric vehicles, the development of power batteries has always been the focus of consumers’ attention. After all, the size of battery capacity directly affects the length of cruising range and the development of electric vehicles, but our current lithium batteries are affected by material characteristics. Leading the battery industry to a halt. Therefore, finding a new energy storage device instead of a lithium battery will be an inevitable trend in the future. So we will think, why not use a super capacitor to do the power battery, can it replace the lithium battery in the future?
The so-called supercapacitor, also known as electrochemical capacitor, is an energy storage system that has become more and more popular in recent years. It can be thought of as a mixture of ordinary capacitors and batteries, but different from both. Like a battery, a supercapacitor also has a positive and a negative electrode separated by an electrolyte. However, unlike batteries, supercapacitors store energy electrostatically like a capacitor, rather than storing energy chemically like a battery. In addition, supercapacitors also have the unparalleled advantages of lithium batteries, such as it can store a large amount of capacitance in a small volume; long cycle life, can be repeatedly charged and discharged hundreds of thousands of times; short charge and discharge time; ultra-low temperature Good characteristics; strong current discharge capability.
In this way, supercapacitors are the best way to source power for electric vehicles. However, everything has advantages and disadvantages. At present, it is still impossible to replace lithium batteries with super capacitors, because the current production of super capacitors is not complete in technology and the production cost is high. In addition, its energy density is low and it is impossible to store more energy per unit volume. If a pure electric vehicle is switched to a super capacitor, the whole vehicle will have to be loaded with a larger volume of super capacitor. Another point is that it is not resistant to high temperatures and cannot be placed in a humid environment, otherwise it will affect normal operation and even damage the battery.
If we look at the advantages, supercapacitors are definitely an alternative to new energy car batteries. But its shortcomings also restrict its development in new energy vehicles. However, we believe that in the near future, we will overcome the shortcomings caused by super capacitors, when the power battery of new energy vehicles will have a new breakthrough.
Post time: Mar-01-2019