Charging or changing battery? Two difficulties in electric cars

2022/04/08

  Author :Iflowpower – Portable Power Station Supplier

Text / Chen Gang has long, the high cost and low efficiency of electric vehicle batteries have limited the development of electric vehicles, which has become the "mileage anxiety" of electric vehicles. To crack the charging dilemma, on the one hand, the electric car company supplies the battery-changing method, just like many years ago, the laptop is the same, take off the battery, the same battery, but due to the electric power station The initial investment cost of the electricity method is too large, the promotion area is limited, and it has not been able to get the result. Therefore, on the other hand, with the battery technology constantly breaks through, the renewal mileage continues to increase, the fast charge mode advantage of electric vehicles is increasingly high.

Nowadays, Headquartered in the startup of Estonia, Skeleton and the German Karlsruhe Institute of Technology have completed super battery technology for electric vehicles, such a breakthrough graphene battery can be fully charged within 15 seconds. Specifically, this is a mixed battery pack that combines ordinary lithium-ion batteries and Skeleton's supercapacitor batteries that play their own advantages in collaborative work. From the advantages and disadvantages of lithium-ion batteries, the lithium ion battery has a high energy density, which means that they can store a large amount of energy, but their power density is often quite low, which means that their charge and discharge speed is relatively slow.

For supercapacitors, supercapacitors can store charges, rather than stored in chemical forms, so they supply huge power densities, charge and discharge at higher speeds, and can last hundreds of thousands of cycles without degrading. At the same time, their energy density is very bad compared to lithium electricity; if you want to maintain the same energy, you have to have a larger battery pack than the same lithium battery. Thus, when Skeleton combines some elements of the supercapacitor to the lithium ion battery, it has achieved a very attractive solution to a very attractive solution.

As a breakthrough graphene battery, its charging time is only 15 seconds. This ultra-fast charging time plus hundreds of thousands of charging cycles, making the super battery will become the perfect solution for the three important issues affecting electric vehicles in the future: the charging time is slow, battery degradation and endurance anxiety. Obviously, when the super battery is going to the market, it will also create more opportunities and air outlets for electric vehicles.

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