GF08.20-S-2000S | High-voltage charger control unit, component description | 16.2.11 |
ENGINES 000.001 in MODEL 639.603
with CODE (MA0) E-CELL 60 kW
with CODE (XZ1) Model generation 1
1 and 2
N54.21-2153-06
45 Bracket
N33/9 PTC heater booster
N83/2 Charging mode control unit 1
and 2
Interlock circuit
The interlock circuit is used as contact protection to protect people against inadvertent contact with high-voltage batteries. For this purpose, a 12 V/20 mA interlock signal is looped through all high-voltage system components that are to be dismantled or opened. To do this there is a contact bridge in each removable high-voltage connection which interrupts the interlock circuit during removal of the high-voltage connection. The interlock circuit is also led switched in a series over the 12 V control unit plug connection of the high-voltage components.
Location
The charging mode control units 1 and 2 are located on a bracket at the front center in the engine compartment.
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Task
Charging mode control units 1 and 2 monitor and control charging of the battery system (G1/3) on the home power network.
Input and output signals
The charging mode control units 1 and 2 evaluate the input signals and send appropriate output signals:
Direct input signals
Direct output signals
Electric vehicle CAN (CAN V) input signals
Electric vehicle CAN output signals
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Direct input signals
The following signals are read in via direct lines:
- Temperature for charger feed socket (X58/24)
- Protective earth "PE"
- Bypass: Network zero conductor "N1" or battery system negative
- Network zero conductor "N2"
- Bypass: Network phase "L1" or battery system positive
- Network phase "L2"
- Circuit 30
- Circuit 31
- Network power limitation
- Charging pulses
- Discharging pulses
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Direct output signals
The following signals are output via direct lines:
- Protective earth "PE"
- Battery system negative
- Bypass: Network zero conductor "N1" or battery system negative
- Battery system positive
- Safety signal for mobile booster
- Bypass: Network phase "L1" or battery system positive
- Circuit 31
Electric vehicle CAN (CAN V) input signals
The following signals are read in via the electric vehicle CAN.
- Battery cooling circuit temperature
- Charger feed socket interlock
- Battery system voltage
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Electric vehicle CAN output signals
The following signals are output via the electric vehicle CAN.
- Charging status
- Charger temperature
- Charger input socket temperature
Charger mode control units 1 and 2 form a CAN link to the components:
- Battery management system control unit (G1/3n1)
- DC/DC converter control unit (N83/1)
- Charging mode control unit (SCCU) (N83/4)
- Electric drive control unit 1 (N3/16)
- Electric drive control unit 2 (N3/17)
- DC/AC converter control unit (N24)
- PTC heater booster
Coding/flashing capability
Charging mode control units 1 and 2 are flashable, i.e. the entire software in the control units can be updated. The software required to program the control units is stored on the STAR DIAGNOSIS DAS Update DVD.
N54.21-2154-74
Body
4 Charge level indicator
16 Electrical connection 12 V
34 Coolant connections
46 Battery system connection
47 Charger feed socket connection
48 Net
49 Fault
50 Charging capacity
51 Charging level 90 %
52 Charging level 100 %