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News > CHAdeMO 2.0 standard opens the way to ultra-fast charging

The new protocol and the corresponding equipment are backwards compatible, that is, they will quietly charge old electric cars that are not capable of digesting such high currents. Just charge will go at lower values.
The new protocol and the corresponding equipment are backwards compatible, that is, they will quietly charge old electric cars that are not capable of digesting such high currents. Just charge will go at lower values.

Photo: Nissan, nichicon.co.jp, evwind.es

he CHAdeMO Association , which is promoting the EC-based standard for high-speed charging of DC electric vehicles, has published a new CHAdeMO 2.0 protocol, which allows the corresponding charging columns to output up to 400 kW (400 A × 1 kV). This will allow prospective electric cars, with the appropriate capabilities of the battery, to be charged much faster than the current ones. Let’s explain: the current protocol CHAdeMO 1.2 allows charging up to 200 kW (400 A × 500 V), but the lion’s share of deployed stations is in practice satisfied with only 50 kilowatts.

In developing an improved standard, the authors paid attention to compatibility with two-way charging systems of the V2X type , which enable them to feed local networks, a house or simply equipment on “nature” from machines.

To estimate the charge rate for a 400 kW system, divide the battery capacity by this number. The new Nissan Leaf , for example, has a battery of 40 kWh. Purely formally get 0.1 hours or six minutes (if he could take such a current). In practice, it will take longer, since the charge with the maximum parameters goes only at the beginning, and at the end of filling the battery, the rate falls. But even 15 minutes “before the full tank” would have been just a chic offer. Now, with a column of 50 kW, only the first 80% of the battery requires 45-50 minutes.

Standard CHAdeMO – a record in terms of prevalence. According to the association, now in 71 countries installed 18 030 such charging systems. As for cars on the road, 22% of the battery cars are now equipped with the appropriate connector and can use CHAdeMO charging directly, and another 13% (this is Tesla) – via the adapter.

The new protocol is an important step in the fight against the competing CCS format , actively promoted in Europe and the US, mostly by the “Germans”. Supporters of CCS have already deployed the construction of new generation charging systems, designed for power up to 350 kW. So, and CHAdeMO (its main supporters – Japanese manufacturers) should not be dozing. We add that the standard CHAdeMO 2.0 allows the charging of machines both through the known connector and through pantographs on the roof (the latter is true for electric buses receiving “fast” make-up at stops). And in the first case in the new generation stations will be used charging cables with liquid cooling.

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