BMW Canada

Research plan “FastCharge”: ultra-fast charging record prepared for a electrically powered vehicles of a future.

Jettingen-Scheppach. The industrial companies
concerned in a investigate plan “FastCharge” yesterday presented the
latest advancements in a margin of quick and accessible appetite supply
for electrically powered vehicles. The antecedent of a charging station
with a ability of adult to 450 kW was inaugurated in
Jettingen-Scheppach, Bavaria. At this ultra-fast charging station,
electrically powered investigate vehicles total as partial of a project
are means to denote charging times of rebate than 3 mins for
a initial 100 kilometres of operation or 15 mins for a full charge
(10-80 % State of Charge (SOC)).

The new charging hire can be used giveaway of assign right away
and is suitable for electric models of all brands with a Type 2
chronicle of a internationally widespread Combined Charging System
(CCS), as is ordinarily used in Europe.

The investigate plan “FastCharge” is being run by an industry
consortium underneath a care of a BMW Group; a other members
are Allego GmbH, Phoenix Contact E-Mobility GmbH,
Dr. Ing. h. c. F. Porsche AG and Siemens AG. “FastCharge” is receiving
sum appropriation of EUR 7.8 million from a Federal Ministry of
Transport and Digital Infrastructure. The doing of the
appropriation directives is being concurrent by NOW GmbH (National
Organisation Hydrogen and Fuel Cell Technology).


Fast and accessible charging will raise a interest of
electromobility. The boost in charging ability adult to 450 kW –
between 3 and 9 times a ability accessible during DC
fast-charging stations to date – enables a estimable rebate in
charging times.
“FastCharge” is questioning a technical
mandate that need to be met in terms of both vehicles and
infrastructure in sequence to be means to daub into these intensely high
charging capacities.

The basement is supposing by a high-performance charging
infrastructure. The Siemens appetite supply complement being used in the
plan enables researchers to exam a boundary of a fast-charging
ability demonstrated by car batteries. It can already handle
aloft voltages of adult to 920 volts – a turn expected in future
electrically powered vehicles. The complement integrates both the
high-power wiring for a charging connectors as good as the
communication interface to a electric vehicles. This charge
controller ensures a outlay is automatically blending so that
opposite electric cars can be charged regulating a singular infrastructure.
The system’s flexible, modular design permits several vehicles
to be charged during a same time. Thanks to high-current, high-voltage
charging a complement is suitable for a series of different
applications, including swift charging solutions and, as in this case,
charging along highways. In sequence to couple a complement to a public
energy grid in Jettingen-Scheppach as partial of a project, a charging
enclosure was set adult with dual charging connections: one provides an
rare charging ability of max. 450 kW while a second can
broach adult to 175 kW. Both charging stations are now accessible for use
giveaway of assign for all vehicles that are CCS-compatible.

The Allego charging hire prototypes now presented use the
European Type 2 chronicle of a timeless Combined Charging
System (CCS) charging connectors. This customary has already proved
successful in countless electrically powered vehicles and is widely
used internationally.

In sequence to accommodate a final of quick charging during high capacity,
cooled HPC (High Power Charging) cables done by Phoenix Contact are
used, that are entirely CCS-compatible. The cooling liquid is an
environment-friendly reduction of H2O and glycol, permitting a cooling
circuit to be half-open. This creates upkeep comparatively
candid as compared to hermetically hermetic systems that use
oil, e.g. in terms of refilling a cooling fluid.

One plea was ensuring that a cooling hoses in a charging
line were not squeezed when connected to a charging station, as
would occur with a compulsory wire gland. In a benefaction instance
this would deteriorate a cooling upsurge and therefore cooling efficiency.
This problem was solved by Phoenix Contact by means of a specially
grown wall channel with tangible interfaces for energy transmission,
communication and cooling as good as integrated tragedy relief.

Depending on a model, a new ultra-fast charging hire can be
used for vehicles propitious with both 400 V and 800 V battery systems.
Its charging ability automatically adapts to a limit permitted
charging ability on a car side. The time saved as a outcome of
a increasing charging capacities is demonstrated in a instance of
a BMW i3 investigate vehicle. A singular 10-80 % SOC charging operation
now usually takes 15 mins for a high-voltage battery, that has a
net ability of 57 kWh. This can be achieved on a car side by
means of a specifically grown high-voltage battery total with an
intelligent charging strategy. The latter includes precise
preconditioning of a storage heat during a start of charging,
heat government during a charging operation itself and a
ideally concurrent charging ability form over time. The
charging operation is carried out around a novel multi-voltage network on
a car side regulating a high-voltage DC/DC (HV-DC/DC) converter,
transforming a compulsory 800 V submit voltage of a charging station
to a reduce 400 V complement voltage of a BMW i3 investigate vehicle. The
HV-DC/DC complement also gives a car retreat compatibility, allowing
it to be charged during both aged and destiny charging stations. A key
cause in ensuring arguable operation is secure communication between
a car and a charging station. For this reason, standardisation
issues relating to interoperability are also being investigated and
submitted to standardisation bodies.

The Porsche investigate car with a net battery ability of approx.
90 kWh achieves a charging ability of some-more than 400 kW, thereby
permitting charging times of rebate than 3 mins for a initial 100
km of range.