Geely EC718 2009 Workshop Manual page 631

Engine
2.11.2 Description and Operation
2.11.2.1 Battery Description and Operation
Warning!
Refer to "Battery Acid Fluid" in "Warnings and Notices".
This vehicle uses uses a maintenance-free battery, which is
different from a conventional battery. There is no vent plug in
this battery. Apart from a small vent on both sides of batteries,
the battery is completely sealed. Vent holes can discharge a
small amount of gas generated by the battery. The electrolyte
inside the battery generates a small amount of gas after
chemical reactions. If there is no exhaust vent, battery internal
pressure increases as the gas pressure increases. When the
pressure is over limit that the battery shell can withstand, the
battery shell will break.
Compared with a conventional battery, this battery has the
following advantages:
–
No need to fill water during the life of the battery.
– Overcharge protection.
– Electricity leakage is less likely to happen as compared with
a conventional battery.
–
Lighter, smaller and capacity is larger.
In the entire electrical system, battery has main functions:
– Provide energy to the starter for starting the vehicle.
– Play a role as the electrical system voltage regulator.
–
When the generator electrical system capacity can not
meet the demand, the battery can provide power in a
certain period of time.
Battery technical parameters explained:
1. Rated capacity: Witt the minimum output of electrical loads
and without generator power, the time the vehicle drives at
night.
2. Cold start current: Starting current when the battery
temperature is -18°C.
If the battery test is normal, but the battery voltage often
appears inadequate, the vehicle can not start at night etc.,
consider the reasons from the following aspects:
– Electrical equipment in the vehicle remain turned on all
night.
–
Driving speed is low, stop and start frequently.
Starting / Charging System JL4G18-D
– Vehicle electrical load exceeds the generator output,
especially if the vehicle is equipped with aftermarket
equipments.
–
Charging system fault, such as electrical short circuit,
generators belt slipping, generator malfunction or voltage
regulator malfunction.
– Improper use of the battery, including failed to maintain
battery cable terminals clean and tighten, or the battery
bracket is loose.
– Mechanical failure in the electrical system, such as short
circuit or circuit damage.
2.11.2.2 Starting System Description and
Operation
Starting system includes the battery, ignition switch, starter,
starter relays and related circuits, all of these parts are
connected by circuits. When the ignition switch is turned to "ST"
position, the starter relay pull-in and provides power to starter
motor magnetic switch, starter motor runs. For specific control
principle. Refer to 2.11.3.1 Starting System Working
2.11.2.3 Charging System Description and
Operation
Charging system includes the battery, generator, instrument
cluster and relevant circuits. Generator consists of the voltage
regulator, rectifier, stator and rotor, which are all installed inside
the generator housing. When the engine rotates, the drive belt
drives the generator to rotate. The generator rotation generates
an alternating current, which is converted to a direct current by
the diode rectifier and then transmitted to the charging system.
Voltage regulator automatically adjusts the generator field
current to control voltage output to keep it within the appropriate
charging range. For detailed working principle. Refer to
the2.11.3.2 Charging System Working
Charging Process:
1. Remove the sealed-type battery from the vehicle and install
proper adapter components. Make sure that all the
charging cables are clean and firm. To achieve best results,
charge the battery when the electrolyte and electrode are
at room temperature. If the battery temperature is too low,
the charger may not start charging after a few hours.
2. Charge the battery until the battery is full or the tested
battery voltage is close to full load capacity. Check the
battery every half an hour during charging.
3. Test the battery
2.11.7.9 Battery Discharging Current Parasitic Load
EC718/EC718RV EC715/EC715RV 10/2009
Principle.
load after charging. Refer
2-549
Principle.
to
Test.