1.5
Charging Principle
Figure3. Charging Principle
Charging
status
Charging
connection
connected or
not
S2
Successful
charging or
not
CP
signal
voltage
①
Explanation
Status1
No
disconnect
No
12±1V
Fail
to
connect
to
the vehicle
Status2
Yes
disconnect
No
9±1V
S1 switches
to the PWM
connected
state, and R3
is detected.
Status3
Yes
connect
Yes
6±1V
Both
OBS
and
power
supply are in
working
condition
Figure4. CP signal control
Note
：①
According to IEC 61851-1
：
2017, high level maximum error ± 1V;
