Drive Motor Generator Battery Venting and Cooling Description

Drive Motor Generator Battery Venting and Cooling Description

The hybrid drive motor battery has two venting systems. One for battery air cooling and one for venting of the hybrid batteries themselves. The hybrid batteries vent system connects all the battery vents to a rubber manifold that exits the hybrid drive motor battery through a single hose and is vented through the floor panel of the vehicle.

Air cooling

The exhaust air from hybrid drive motor battery cooling is routed through a duct and into the floor panel of the vehicle. The hybrid battery air inlet and air outlet temperature sensors are located on the inlet and outlet air ducts of the hybrid battery fan. These sensors are used by the battery energy control module (BECM) to determine air flow. Refer to Drive Motor Generator Control Module Description and Operation.

Electrolyte venting

Each of the 40 hybrid batteries has a vent for electrolyte gas on the top. The hybrid batteries vent system connects all of the 40 hybrid battery vents to a rubber manifold. The vent exits the hybrid drive motor battery through a single hose and is vented through the floor panel of the vehicle. These vents are mechanical and will only open when a predetermined amount of internal battery pressure is reached.