System Description

The Axle Power System is a 2-piece assembly:

1. The Energ-e Pack controls generation and provision of the Trailer Refrigeration Unit (TRU). It stores the power generated by the ePower Axle Generators or by charging with shore power connection in its high voltage batteries. It supplies electric power to the TRU.

   The Energ-e Pack consists of the following components, among others:

   • High voltage battery (HV battery). There are systems with one or two HV batteries.

   • Energ-e Pack HMI panel, the Human-Machine Interface or User Interface.

   • Temperature Management System (TMS).

   • Controllers, inverters, filters, sensors.

   
   

2. The ePower Axle unit generates electrical power for the Energ-e Pack. The Generator Transmission Units (GTUs) with the two generators are mounted below the trailer and convert mechanical power from vehicle movement into electric power to supply the Trailer Refrigeration Unit (TRU) and charge the high voltage battery of the Energ-e Pack.

These units in combination, the Axle Power System, provide electrical power for operating the refrigeration unit.