CHAdeMO

CHAdeMO is the trade name of a cross-brand electrical interface of a battery management system for electric cars. This Japanese designed interface based on DC voltage of the battery of an electric vehicle with an electrical output of up to 62.5 kW can be loaded.

Origin of the name

CHAdeMO is an acronym of Chargé de MOve derived from "charge for moving". More plausible is the derivative of the Japanese sentence O cha demo ikaga desuka - which means something like " How about a cup of tea? ". So the name should point out that an empty Driven electric car can be charged within 15-30 minutes on 80 % of the battery capacity - after a cup of tea so you can continue the journey.

Consortium

Members of the CHAdeMO industry consortium that created the standard and introduced on 15 March 2010, are The Tokyo Electric Power Company ( TEPCO ), Nissan, Mitsubishi and Fuji Heavy Industries ( the company producing the Subaru brand ). Toyota later joined as the fifth member.

Operation

When CHAdeMO protocol, the battery management system (BMS ) of the car with the computer of the fast-charging station to a master-slave system connects. The BMS of the car ( Master ) reports the charging station ( slave):

The charging station fit out the charging parameters to the information provided by the BMS of the car battery parameters ( voltage, current ). In this way, the charging process is controlled from the car, which should lead to more rapidly as possible and at the same time gentle charging of the battery.

Compatibility and standardization

The CHAdeMO protocol is compatible with Japanese charging connectors from the power company TEPCO. However, it is not compatible with other charging connectors (eg, type 1, type 2 ), since the CHAdeMO charging communication requires two CAN lines and separate signal lines. However, the extra effort to implement a DC charging station for both standards is low, so that combined solutions exist.

Japanese electric cars like the Nissan LEAF and the Mitsubishi i- MiEV are already set up for fast-charge after CHAdeMO standard.

The CHAdeMO protocol is now recognized internationally as part of the ISO standard as a DC charging standard: as the protocol in the ISO / IEC 61851-23 and ISO / IEC 61851-24 has been added.

Dissemination

The fast charging stations by CHAdeMO standard were installed by the power company TEPCO in Japan in large numbers - TEPCO has this set up its own distribution network to supply the power stations.