add charge_curves.txt

[BTollison]

In an effort to make ODS more compatible with electric fleets, I am proposing the following addition of charge_curves.txt

Charge_Curve_ID Represents the primary key value for a charge curve and links to the proposed vehicles.txt

• Primary Key

kw_charge_rate The rate at which a charge provides power in kW.

• required

start_soc A decimal value representing the start state of charge value.

• required
• I'd rather this be represented in kwh, but it's pretty standard to see this as state of charge so I'd rather not fight that.

end_soc A decimal value representing the end state of charge value.

• required
• I'd rather this be represented in kwh, but it's pretty standard to see this as state of charge so I'd rather not fight that.

curve_sequence Represents the display order of the charging curve (integer)

[jeffkessler-keolis]

In alignment with the proposed generalization of https://github.com/cal-itp/operational-data-standard/issues/46#issuecomment-1872260528, I'd propose changing kw_charge_rate to power_charge_rate, which could support not only battery chargers, but also fuel stands and other fuel sources.

[Guilhem1976]

Would that be a data provided by electric bus providers to feed Scheduling and Operations systems ?