Supercapacitor is not a battery: charging is ultra fast
Supercapacitors are used as ultrafast batteries with very long life. Ideal storage system for renewable energy and electric transportation, supercapacitors are taking gradually their place alongside or instead of batteries...
China takes the lead in adopting the all-electric bus equipped with supercapacitors.
The Chinese company Sunwin, a joint venture between Volvo and China's largest automaker SAIC had already made a big publicity stunt in 2010 by providing 61 electric buses using supercapacitors to serve the World Expo 2010 of Shanghai.
Buses with supercapacitors of Sunwin brought in their 2010 version an autonomy from 3 to 6 km. Supercapacitors are then charged on each bus stop with a pantograph (like a tram). 30 seconds are enough to charge the bus to 50% and it takes 80 seconds to charge to 100%.
Here is a video where we see the supercapacitor bus to recharge in a bus stop:
A new electric bus was put into operation on July 28th, 2015 in China. Its special feature: a full charge in just 10 seconds thanks to its supercapacitors.
This bus travels a line of 11 km with 24 stops in Ningbo city on the East coast of China. In the next three years, no less than 1,200 of these buses will be used for public transport in the city, where the electric bus plant is located.
This bus is recharged at stop stations, while passengers getting on or off the bus. Each charge allows the bus to travel up to five kilometers.
In addition, the bus consumes 30 to 50 percent less energy than other electric vehicles.
The Chinese company "Ningbo CSR New Energy Technology", a subsidiary of CSR Zhuzhou Electric Locomotive (the largest train manufacturer in the world) developed graphene supercapacitors with high capacitance.
These new supercapacitors are intended to improve the efficiency of electric buses, trolleybuses and trams with fast recharge and to increase their autonomy.
Thus, a supercapacitor trolleybus should be able to travel 10 km after a charge of one minute, against 6 km for a charge of 30 seconds with the supercapacitor trolleybuses currently operated by the company. The goal is to reduce the number of intermediate charge to better adapt to the requirements of planning and urban construction.
The Chinese company Ningbo CSR New Energy Technology has delivered to its parent company CSR Zhuzhou Electric Locomotive its first batch of 5000 supercapacitors 7500 Farads. This is the largest mass production in the world of supercapacitors with such capacitance.
The most advanced countries in the field of supercapacitors are South Korea, the United States, Japan and China. Today there are more than a dozen manufacturers worldwide able to supply large quantities of supercapacitors.
The first electric boat in the world powered 100% by supercapacitors has been named this Wednesday, September 18, 2013 in Lorient (France). This electric ferry that will shuttle between Lorient and Pen-Mané (Locmiquélic) is aptly named: Ar Vag Tredan means "electric boat" in Breton, the local historical language.
Built by STX shipyard in Lanester, this boat shuttle with exclusively electric propulsion will charge at each stop in just 4 minutes. A capacity provided by the charging speed of supercapacitors that far exceeds that of traditional batteries. This is certainly a breakthrough for the design and construction of ships "zero emission".
Few people know it, but supercapacitors are already in use in many car models for brake energy regeneration and Start-Stop systems (not only in electric vehicles). Indeed, ultracapacitors are particularly effective in meeting this need. Able to charge and discharge very quickly and almost without wear, the supercapacitor appears as an ultra-fast and reliable battery.
Start-Stop system to cut the engine off
In 2010, PSA was the first car manufacturer to have had the idea of using supercapacitors to optimize the Start-Stop system that cuts the engine when the car stops with gear lever in neutral to save some fuel.