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Electric vehicle charging time slashed to a third with revised standard

  • March 27, 2017
  • , Nikkei , p. 5
  • JMH Translation

The CHAdeMo Association, the organization that promotes the CHAdeMO fast charging standard for electric vehicles (EV), has announced that it will significantly upgrade its standard specification for the first time in seven years. In response to the popularity of larger EV batteries, the new standard allows for the commercialization of fast chargers with a maximum power output of 150 kW, which is three times more powerful than its current standard. The new standard plugs will be launched by the end of the year. Charging time will be shortened to a third for the same amount of charge.

 

Since the publication of its initial protocol released in 2010, the CHAdeMo Association has certified fast charging plugs for more than 230 vehicle models made by some 50 automakers. There are 21 models by 11 automakers that are compatible, including the Nissan EV Leaf and Toyota Prius PHV plug-in hybrid.

 

Currently, CHAdeMO compatible fast chargers with a maximum power output of 50 kW have become popular in the Japanese and European markets. More automotive makers are installing larger batteries in their vehicles to maximize the driving range per charge. For example, to charge the latest Leaf model installed with a 30 kWH battery would require 30 minutes for an 80% charge. Fast chargers that meet the new standard would take 10 minutes, one third of the previous time.

 

Some major automakers like Nissan and Volkswagen (VW) have developed EV concept cars that have about double the battery capacity of current models, and are projected to continue increasing battery size. The CHAdeMo Association aims to include new systems, such as liquid cooling cables, in future revisions to its standards. It hopes to raise the maximum output seven-fold to 350 kW by 2020.

 

Other fast charging standards like Combo, promoted by European manufacturers including VW, are considering upgrading vehicular battery capacity. In other countries, fast charging stations equipped with plugs compatible with both CHAdeMO and Conbo standards are emerging. The CHAdeMo Association plans to ensure compatibility in its next-generation protocol.

 

Major DC fast charging standards for EVs

 

CHAdeMO

Combo

Tesla

Deployment

Japan, Europe, and U.S.

Europe and U.S.

U.S., Europe, China, and Japan

Max power output

50 kW

50 kW

120 kW

Installed # of chargers

Approx. 14,000

Approx. 4,000

Approx. 4,000

 

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