F2010A111
Integration and Optimisation of EV Powertrain and Cabin Climate Thermal Management Systems
Abstract
The paper outlines the results of a collaborative research programme concerned with all relevant aspects of thermal management on a compact electric vehicle. The vehicle under study was fitted with a Sodium Nickel Chloride (ZEBRAź) traction battery pack, running at an electrolyte temperature of around 320C, and an integrated approach to battery, powertrain and cabin climate thermal management has been developed.
Experimental studies of cabin heating, air conditioning and powertrain cooling concepts have been conducted at sub-system and whole-vehicle levels in order to evaluate various options for the vehicle. The work is supported by appropriate simulation activities, which include the thermal characteristics of the battery pack and power electronics components, along with the heat transfer characteristics of the passenger compartment and all associated heat exchangers. A primary objective of the work has been to integrate the vehicle thermal management sub-systems in order to recover heat wherever possible, and also to mitigate the effects of external climatic conditions. This leads to the minimisation of 'non-traction' loads on the vehicle energy storage system, and hence optimal range performance.
Results of simulation and sub-system test work are presented, along with whole-vehicle test results, demonstrating the benefits of the integrated approach in terms of powertrain efficiency, range performance, and occupant comfort.
MRJ - 14.07.09
This abstract is supplemented by a PDF, which can be viewed here.