Nissan Leaf. Manual — part 507
EVC-52
< SYSTEM DESCRIPTION >
SYSTEM
Then, VCM determines the charge power based on the Li-ion battery chargeable power signal received from
the Li-ion battery controller and the chargeable power signal received from the PDM (Power Delivery Module).
VCM then sends the maximum charge power signal to the PDM (Power Delivery Module).
The PDM (Power Delivery Module) determines a charge power based on the maximum charge power signal
and the maximum input current signal sent by the EVSE control box.
Concurrently, the VCM activates the system main relay 1 and system main relay 2. Consequently, Li-ion bat-
tery charge starts.
NOTE:
• Li-ion battery charge does not start when the power switch is ON. When it is required to charge with the
power switch ON, start charging before turning ON the power switch.
• When the charging connector is connected to the charge port in the READY state, READY is turned OFF,
the power switch is turned ON, and the shift position is changed to N position.
IMMEDIATE CHARGE MODE
When EVSE is connected to the normal charge port, the PDM (Power Delivery Module) transmits an EV sys-
tem activation signal to VCM. Li-ion battery charge then starts immediately.
When the timer charge is set, Li-ion battery charge does not start just after the PDM (Power Delivery Module)
transmits an EV system activation signal to VCM. When VCM detects an ON signal from the immediate charg-
ing switch in that state, VCM judges that the immediate charge mode is selected and starts charging.
When the charge is finished and VCM receives a Li-ion battery charge completion signal from Li-ion battery
controller, VCM stops the charge control.
TIMER CHARGE MODE
VCM starts up automatically and starts charging at the set time.
When VCM receives a Li-ion battery charge completion signal from Li-ion battery controller or at a set timer
charge finish time, VCM stops the charge control.
NOTE:
• The timer setting method varies according to vehicle specifications.
- Models with navigation system: Refer to
AV-221, "MULTI AV SYSTEM : System Description"
(Navigation
without BOSE) or
AV-346, "MULTI AV SYSTEM : System Description"
(Navigation with BOSE).
- Models without navigation system: Refer to
MWI-30, "TIMER CHARGE AND A/C-HEATER TIMER (CLI-
MATE CTRL. TIMER) (WITHOUT NAVIGATION) : System Description"
.
• When timer charge and the timer air conditioner operate simultaneously, VCM distributes power to the air
conditioner system and the charge system according to the priority set on the navigation screen or combina-
tion meter.
REMOTE CHARGE MODE
When TCU transmits an EV system activation signal to VCM, VCM judges that the remote charge mode is
selected and starts charge control.
When VCM receives a Li-ion battery charge completion signal from Li-ion battery controller, VCM stops the
charge control.
CANCEL CONDITIONS
VCM stops the normal charging when VCM detects the EVSE is disconnected.
In addition, under the following conditions, VCM temporarily stops the normal charging and enters standby
status.
• When the AC voltage and PWM communication from the EVSE are interrupted.
• When the EVSE connector release switch is pressed.
• When the Li-ion battery temperature reaches 60
°C (140°F) or higher.
SYSTEM
EVC-53
< SYSTEM DESCRIPTION >
D
E
F
G
H
I
J
K
L
M
A
B
EVC
N
O
P
LI-ION BATTERY CHARGE CONTROL : Quick Charge Control
INFOID:0000000010120562
SYSTEM DIAGRAM
BASIC CONTROL
When the quick charge connector is connected to the quick charge port and the start switch of quick charger is
pressed, the PDM (Power Delivery Module) transmits an EV system activation request signal to VCM. VCM
then activates the F/S CHG relay.
Next, VCM determines the target charge power based on the Li-ion battery chargeable power signal received
from the Li-ion battery controller and the chargeable power signal received from the PDM (Power Delivery
Module). VCM then sends the maximum charge power signal to the PDM (Power Delivery Module).
The PDM (Power Delivery Module) converts the Maximum charge power signal to a charge current request
signal and transmits it to the quick charger.
Simultaneously, the PDM (Power Delivery Module) activates the quick charge relay, and VCM activates sys-
tem main relay 1 and system main relay 2. Consequently, the quick charge starts.
When the charge amount reaches the prescribed amount and VCM receives the Li-ion battery charge comple-
tion signal from the Li-ion battery controller, VCM stops the charging.
NOTE:
• Even if the Li-ion battery remaining energy does not reach the predetermined level, VCM may stop the
charge control after a certain period of time.
• When the Li-ion battery temperature reaches 60ºC (140
°F) or higher, VCM temporarily stops quick charging
and enters standby status.
HIGH VOLTAGE SYSTEM COOLING CONTROL
HIGH VOLTAGE SYSTEM COOLING CONTROL : System Description
INFOID:0000000010120563
VCM controls water pump and cooling fan according to information from various sensors and ECUs.
JSCIA0626GB
EVC-54
< SYSTEM DESCRIPTION >
SYSTEM
SYSTEM DIAGRAM
WATER PUMP CONTROL
Control Description
VCM controls the electric water pump to achieve the flow rate corresponding to water temperature and vehicle
speed. The electric water pump contains an interface circuit. When a malfunction occurs in the pump, the elec-
tric water pump transmits an error signal to VCM and prevents the reduction in coolant flow rate. Since PDM
(Power Delivery Module) needs to be cooled during charge, VCM activates the electric water pump to circulate
coolant to PDM (Power Delivery Module).
Electric Water Pump Operation During Traveling
< Reference value of electric water pump duty>
NOTE:
The values listed above may slightly differ from actual measurement values depending on conditions.
Fail-Safe
When a malfunction occurs in the electric water pump, VCM controls the electric water pump as follows:
JSCIA0494GB
Electric water pump operation
Electric water pump control duty
(Approx.)
LOW
40%
MID
60%
HIGH
73%
JSCIA0495GB
SYSTEM
EVC-55
< SYSTEM DESCRIPTION >
D
E
F
G
H
I
J
K
L
M
A
B
EVC
N
O
P
COOLING FAN CONTROL
Control Description
VCM calculates an appropriate speed according to coolant temperature, vehicle speed, and a cooling fan
speed request signal received from A/C auto amplifier and transmits a duty signal to the cooling fan control
module.VCM judges a maximum fan speed according to a cooling fan speed (calculated from coolant temper-
ature and a vehicle speed) and that requested from the A/C auto amplifier and outputs drive duty.
NOTE:
The cooling fan may be activated during charge or deice system operation (only models with heat pump) even
when the power switch is OFF.
The cooling fan speed control reduces variations in cooling fan
speed by setting a range in operating conditions as shown in the fig-
ure.
VCM reduces the frequency of ON/OFF cycles by setting a period of
time (A) in which the cooling fan continuously operates after the A/C
compressor is turned OFF.
Cooling fan operation (During traveling or charging)
<With heat pump system>
Cooling fan duty (%)
<Without heat pump system>
Feedback to VCM
Control state
Malfunction in pump or abnormal power supply of
pump
STOP
• Abnormal feedback signal
• A break in communication line or short circuit
Normal control
NOTE:
Water pump operates at a maximum velocity
Abnormal signal input from pump
Normal control
Speed fed back from pump differs largely from VCM-
indicated speed.
Normal control
JSCIA0496GB
JSCIA0418GB
Engine coolant temper-
ature [
°C (°F)]
Vehicle speed [km/h (MPH)]
0 (0) – 20 (12)
20 (12) – 50 (31)
50 (31) – 80 (50)
80 (50) or more
60 (140) or less
0
0
0
0
60 (140) – 62 (144)
30 – 75
30 – 75
30 – 75
0
62 (144) or more
100
100
100
100
Нет комментариевНе стесняйтесь поделиться с нами вашим ценным мнением.
Текст