Deliverable 3.1 Business Analysis - Green eMotion Project

Autarkic administration of sub-domains
for each EVSP
Error detection at the beginning of the
supply chain with help of check digits
• Two letters (676 as maximum deviation)
• Two alphanumeric characters (1,296 as
maximum deviation)
• Six numbers (1,000,000 contracts)
• Six alphanumeric Characters
(2,176,782,336 contracts)
• Check digits: analogue to ISBN-concept
Table 2: Requirements for contract ID defined by the e-IKT project 7
In the following paragraph, two different suggestions for customer IDs can be found. They are descended
from different e-Mobility projects in Germany.
“e-Mobility Berlin” (Daimler & RWE)
An example: DE-AA-123456-P with
• DE: country code
• AA: random letter combination
• 123456: six digit number (to be extended on alphanumeric character if needed), defined by the
EVSP
• P: check digit (analogue to ISBN-concept)
Other German electric mobility demonstration projects
An example: DE-AAA-XXXXXX-P with
• DE: country code
• AAA: three alphanumeric characters to identify the EVSP
• XXXXXX: six alphanumeric digit to be defined by the EVSP
• P: check digit (analogue to ISBN-concept)
Depending on how many different IDs have to be generated, either the first approach (with more) or the
second (with less) possible IDs can be chosen.
Identification/Authentication
A customer arriving at a charging point is identified via a customer ID saved on the EV. This ID is
transmitted via the charging cable. (ISO 15118 protocol)
Once the customer is identified, the following data is transmitted to the EVSP both at the starting and end
point of the charging:
Billing
• Charging point location
• Time
• Current State of Charging (SoC)
7 e-IKT consortium (2011): Integration der Elektromobilität in die Netzsysteme der Zukunft, http://www.eikt.de/language=en/469,
retrieved on 08.09.011.
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