System Main Relay

COMPONENT PARTS

System Main Relay


DESCRIPTION

When high-voltage power is supplied, HPCM activates the system main relay to supply power from the Li-ion battery to the hybrid system.

SYSTEM MAIN RELAY 1

System main relay 1 is installed inside the battery junction box and is controlled by HPCM. It connects and disconnects the high-voltage circuit (+) side and the Li-ion battery.

SYSTEM MAIN RELAY 2

System main relay 2 is installed inside the battery junction box and is controlled by HPCM. It connects and disconnects the high-voltage circuit (-) side and the Li-ion battery.

PRE-CHARGE RELAY

The pre-charge relay is contained in the DC/DC converter, and is controlled by HPCM. When supply of high voltage power is needed, HPCM activates the pre-charge relay and power is supplied via the charging resistor, preventing the sudden application of high-voltage.