BMW unveil ultra-fast 450 Kw EV charging station | Electrical Automobile Information

BMW unveil ultra-fast 450 Kw EV charging station | Electrical Automobile Information


BMW and industrial firms concerned within the analysis mission “FastCharge” yesterday introduced the newest developments within the area of quick and handy power provide for electrically powered autos. The prototype of a charging station with a capability of as much as 450 kW was inaugurated in Jettingen-Scheppach, Bavaria. At this ultra-fast charging station, electrically powered analysis autos created as a part of the mission are in a position to exhibit charging occasions of lower than three minutes for the primary 100 kilometres of vary or quarter-hour for a full cost (10-80 % State of Cost (SOC)).

The brand new charging station can be utilized freed from cost straight away and is appropriate for electrical fashions of all manufacturers with the Kind 2 model of the internationally widespread Mixed Charging System (CCS), as is often utilized in Europe.

The analysis mission “FastCharge” is being run by an trade consortium underneath the management of the BMW Group; its different members are Allego GmbH, Phoenix Contact E-Mobility GmbH, Dr. Ing. h. c. F. Porsche AG and Siemens AG. “FastCharge” is receiving whole funding of EUR 7.8 million from the Federal Ministry of Transport and Digital Infrastructure. The implementation of the funding directives is being coordinated by NOW GmbH (Nationwide Organisation Hydrogen and Gas Cell Expertise).

Quick and handy charging will improve the enchantment of electromobility. The rise in charging capability as much as 450 kW – between three and 9 occasions the capability obtainable at DC fast-charging stations so far – allows a considerable discount in charging occasions.
“FastCharge” is investigating the technical necessities that must be met by way of each autos and infrastructure so as to have the ability to faucet into these extraordinarily excessive charging capacities.

The idea is supplied by a high-performance charging infrastructure. The Siemens power provide system getting used within the mission allows researchers to check the boundaries of the fast-charging capability demonstrated by automobile batteries. It could already deal with increased voltages of as much as 920 volts – the extent anticipated in future electrically powered autos. The system integrates each the high-power electronics for the charging connections in addition to the communication interface to the electrical autos. This cost controller ensures the output is robotically tailored in order that totally different electrical vehicles will be charged utilizing a single infrastructure. The system’s versatile, modular structure permits a number of autos to be charged on the identical time. Due to high-current, high-voltage charging the system is appropriate for plenty of totally different functions, together with fleet charging options and, as on this case, charging alongside highways. With a view to hyperlink the system to the general public energy grid in Jettingen-Scheppach as a part of the mission, a charging container was arrange with two charging connections: one gives an unprecedented charging capability of max. 450 kW whereas the second can ship as much as 175 kW. Each charging stations are actually obtainable to be used freed from cost for all autos that are CCS-compatible.

The Allego charging station prototypes now introduced use the European Kind 2 model of the well-established Mixed Charging System (CCS) charging connectors. This normal has already proved profitable in quite a few electrically powered autos and is broadly used internationally.

With a view to meet the calls for of quick charging at excessive capability, cooled HPC (Excessive Energy Charging) cables made by Phoenix Contact are used, that are absolutely CCS-compatible. The cooling fluid is an environment-friendly combination of water and glycol, permitting the cooling circuit to be half-open. This makes upkeep comparatively easy as in comparison with hermetically sealed methods that use oil, e.g. by way of refilling the cooling fluid.

One problem was making certain that the cooling hoses within the charging line weren’t squeezed when related to the charging station, as would occur with a traditional cable gland. Within the current occasion this may impair the cooling move and subsequently cooling effectivity. This downside was solved by Phoenix Contact by way of a specifically developed wall duct with outlined interfaces for energy transmission, communication and cooling in addition to built-in rigidity aid.

Relying on the mannequin, the brand new ultra-fast charging station can be utilized for autos fitted with each 400 V and 800 V battery methods. Its charging capability robotically adapts to the utmost permitted charging capability on the automobile facet. The time saved because of the elevated charging capacities is demonstrated within the instance of the BMW i3 analysis automobile. A single 10-80 % SOC charging operation now solely takes quarter-hour for the high-voltage battery, which has a internet capability of 57 kWh. This may be achieved on the automobile facet by way of a specifically developed high-voltage battery mixed with an clever charging technique. The latter consists of exact preconditioning of the storage temperature at the beginning of charging, temperature administration throughout the charging operation itself and a wonderfully coordinated charging capability profile over time. The charging operation is carried out through a novel multi-voltage community on the automobile facet utilizing a high-voltage DC/DC (HV-DC/DC) converter, remodeling the required 800 V enter voltage of the charging station to the decrease 400 V system voltage of the BMW i3 analysis automobile. The HV-DC/DC system additionally provides the automobile reverse compatibility, permitting it to be charged at each outdated and future charging stations. A key think about making certain dependable operation is safe communication between the automobile and the charging station. Because of this, standardisation points referring to interoperability are additionally being investigated and submitted to standardisation our bodies.

The Porsche analysis automobile with a internet battery capability of approx. 90 kWh achieves a charging capability of greater than 400 kW, thereby permitting charging occasions of lower than three minutes for the primary 100 km of vary.


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December 2022