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CCS-interface

The CCS interface manages the input and output from the HIL-Computer and converts them to the EVCC. On the power path, it connects directly P-HIL (A, B, C, N, DC+, DC-) and Power Unit (A', B', C', N', DC+', DC-').

component component dialog parameters
property tabs
  1. General
  2. CP/PP
  3. T check
  4. digital out
  5. lock

Block Diagram

The CCS-Interface block diagram is separated into the main parts.

The Power Statge maps

  • the AC inputs A, B, C and N to A', B', C' and N'.
  • the DC inputs DC+ and DC- to DC+' and DC-'.

The analog and digital signals are converted in

  • CCS board where the whole communication according IEC61851-2 over CP and PP contact is managed. It also provides access to connect diodes and filter capacitors via digital signals on the CCS board 1.0.
  • P-HIL Interface where the other elements of the HIL-Connect. This are:
    • CAN communication for locking CCS and detecting the temperature sensors in the CCS-interface
    • reading analog measurements for the measurement of AC and DC voltages and currents
    • Controlling digital outputs for switching between EV or EVSE mode
    • Setting LED in the HIL Connect for status indication.

Locking of CCS

the locking is initialized by a pulse (0 - 1 - 0) at input sw This results in the shown digital outputs for the motor control.

Input and Output

The CCS interface manages the input and output from the HIL-Computer and converts them to the EVCC. This is done via the outputs CP, PP, st and the input sw. For Details please check the EVCC IO documentation in the section inputs and outputs.

input

  • input switch for controlling the motor of the CCS inlet. The signal flow for controlling the motor for locking is described in section Locking of CCS.
Number Output Description range default
1 motor direction direction of motor: lock (0), unlock (1) 0 or 1 0
2 motor on/off switching motor on (1) or off (0) 0 or 1 0

output

  • output CP contains all control pilot signals:
Number Input Description range default
1 CP peak Peak voltage of PWM signal 0 - 12 V
2 CP duty cycle duty cycle of PWM signal 0 - 1 %/100
3 CP frequency frequency of PWM signal 0 - 10000 Hz 1000
  • output PP contains all Plug present signals:
Number Input Description range default
1 PP resistor Resistor measurement between PE and PP 0 - inf Ohm
  • output state contains all states of the CCS plug:
    • Temperature sensor feedback
      • 1: too low (R < 790)
      • 2: ok (790 < R < 1280)
      • 3: switch off (1280 < R < 1420)
      • 4: too high (R > 1420)
      • 5: not defined
    • locking state
      • 0: disabled
      • 1: unlocked
      • 2: locked
Number Input Description range default
1 T AC ok Temperature AC Pins of CCS connector are ok 1, 2, 3, 4 or 5 2
2 T DC ok Temperature DC Pins of CCS connector are ok 1, 2, 3, 4 or 5 2
3 CCS lock state Feedback of CCS locking actor 0, 1 or 2 0

Component dialogue box and parameters

The mask dialog of CCS interface defines all the analog and digital signals that are mapped to the model. For convenient operation, predefined selections top row or bottom row provide predefined settings if the HIL-Connect. The CCS subsystem is organized in two tabs.

Tab 1 - General

Parameter Code Name Description
execution rate Tn The Faster execution rate at which control PWM evaluation of the CP-signal is processing. Should be approximately 5 to 10 times faster than the Slower execution rate. [s]
execution rate slower Tslow The Slower execution rate, at which part of the inner signal processing of the communication components will be executed. This execution rate is identical by the connected UI subsystem. Should be approximately 5 to 10 times slower than the Faster execution rate. [s]
signal input sig_inp Defines the input signals from the CCS-interface. Currently, the only version is "HIL-Connect".
Pin out setting HIL Connect pout Combobox defining how the HIL Connect is connected to the HIL-Computer
internal lock emulation emulate_lock Checkbox enabling internal emulation of the feedback from the CCS-interface. If activated the feedback follows the switching actions initiated by EVCC. This is mandatory for V-HIL.
internal Tcheck emulation emulate_Tcheck Checkbox enabling internal temperature sensor emulation. If activated the temperature sensors of the CCS-interface are emulated in a temperature range that allows charging. This is mandatory for V-HIL.
activate AC measurement AC checkbox activates the measurement of AC voltage and current by the HIL connect via analog signals
activate DC measurement DC checkbox activates the measurement of DC voltage and current by the HIL connect via analog signals

Tab 2 - CP/PP

Parameter Code Name Description
CP HW filter C3n2 C3n2 checkbox connects a capacitor with 3n2 to the CP-contact on CCS-board.
CP HW filter C1n6 C1n6 checkbox connects a capacitor with 1n6 to the CP-contact on CCS-board.
CP HW filter C800p C800p checkbox connects a capacitor with 800p to the CP-contact on CCS-board.
CP HW filter C400p C400p checkbox connects a capacitor with 400p to the CP-contact on CCS-board.
CP HW filter C200p C200p checkbox connects a capacitor with 200p to the CP-contact on CCS-board.
CP HW filter C100p C100p checkbox connects a capacitor with 100p to the CP-contact on CCS-board.
cut of frequency CP Vpeak fc_CP_Vp includes a cut off frequency for the measured peak of the CP signal [Hz]
rate limit CP duty cycle (+/-) rate_lim_dc limits the rate of change for the detected duty cycle of CP-signal