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4-8 Description and Operation
4.2.3 Charging Station
Figure 14. Charging station
KEY: 1. Scraper - 2. Primary pad - 3. Knobs (mushroom shaped) - 4. Spring - 5. Spring - 6. LEDs
Note: the secondary pad is on the machine
The automatically driven routes always start and end at the charging station. The battery in the machine is
charged wireless with two pads:
• The primary pad is installed in the charger, this pad can generate a magnetic field. The pad is
connected to the primary charger control box which is connected to the mains.
• The secondary pad is installed on the cover of the machine. This secondary pad generates a current
from the magnetic field and uses that current to recharge the battery. The pad is connected to the
secondary control box which is connected to the battery.
The primary and secondary control box communicate wirelessly when the machine is in the charger and
the primary and secondary pad are connected.
When the machine drives into the charging station, the scraper (1) on the charger wipes off the dirt from
the pad on the machine. When the machine drives further into the charging station, two mushroom
shaped knobs (3) hook into the pad on the machine. The two knobs align the primary pad with the
secondary pad. The primary pad can slide a bit to the left or right and the springs (4) and (5) push the pad
toward the machine. This alignment makes sure both pads are in the correct position for charging. If the
water station is combined with the charging station, the machine will drive backwards a bit after 2
minutes when the water bags are filled to avoid possible water leakage. The springs (4) and (5) also make
sure the two pads are still aligned after driving backwards.
The machine can be left permanently connected to the charging station. The VCB and VIOB continuously
monitor the state of the battery and control the charging to keep the battery in optimal condition.
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