Combined Fluid Loop Thermal Management for Electric Drive Vehicle Range Improvement

نویسنده

  • Daniel Leighton
چکیده

Electric drive vehicles (EDVs) have complex thermal management requirements not present in conventional vehicles. In addition to cabin conditioning, the energy storage system (ESS) and power electronics and electric motor (PEEM) subsystems also require thermal management. Many current-generation EDVs utilize separate cooling systems, adding both weight and volume, and lack abundant waste heat from an engine for cabin heating. Some use battery energy to heat the cabin via electrical resistance heating, which can result in vehicle range reductions of 50% under cold ambient conditions. These thermal challenges present an opportunity for integrated vehicle thermal management technologies that reduce weight and volume and increase cabin heating efficiency. Bench testing was conducted to evaluate a combined fluid loop technology that unifies the cabin air-conditioning and heating, ESS thermal management, and PEEM cooling into a single liquid coolant-based system. This system has separate hot and cold fluid streams that are directed to the thermal components as required. The advantages include PEEM waste heat recovery to supplement cabin heating and heat pump operation without refrigerant cycle reversal. A bench test apparatus was constructed to apply transient drive cycle loads to the thermal system and measure the performance under ambient temperatures from −12°C to 43°C. The system proved capable of meeting component thermal requirements at all tested conditions. Furthermore, the system demonstrated a 9% range increase on a nationally weighted basis that accounts for vehicle usage and ambient temperature. The range improvement is expected to be greater for an optimized in-vehicle system. CITATION: Leighton, D., "Combined Fluid Loop Thermal Management for Electric Drive Vehicle Range Improvement," SAE Int. J. Passeng. Cars Mech. Syst. 8(2):2015, doi:10.4271/2015-01-1709. 2015-01-1709 Published 04/14/2015 Copyright © 2015 SAE International doi:10.4271/2015-01-1709 saepcmech.saejournals.org NREL/CP-5400-63430. Posted with permission. Presented at the SAE 2015 World Congress & Exhibition, 21–23 April 2015, Detroit, Michigan.

برای دانلود متن کامل این مقاله و بیش از 32 میلیون مقاله دیگر ابتدا ثبت نام کنید

ثبت نام

اگر عضو سایت هستید لطفا وارد حساب کاربری خود شوید

منابع مشابه

Integrated vehicle thermal management for advanced vehicle propulsion technologies: Preprint

A critical element to the success of new propulsion technologies that enable reductions in fuel use is the integration of component thermal management technologies within a viable vehicle package. Vehicle operation requires vehicle thermal management systems capable of balancing the needs of multiple vehicle systems that may require heat for operation, require cooling to reject heat, or require...

متن کامل

Climate Control Load Reduction Strategies for Electric Drive Vehicles in Cold Weather: Preprint

When operated, the cabin climate control system is the largest auxiliary load on a vehicle. This load has significant impact on fuel economy for conventional and hybrid vehicles, and it drastically reduces the driving range of all-electric vehicles (EVs). Heating is even more detrimental to EV range than cooling because no engine waste heat is available. Reducing the thermal loads on the vehicl...

متن کامل

Improved nanofluid cooling of cylindrical lithium ion battery pack in charge/discharge operation using wavy/stair channels and copper sheath

Abstract: In order to improve the thermal management system for cooling an electric vehicle battery pack, the thermal performance of the battery pack in two states of charge and discharge in different working conditions by using a copper sheath around the batteries and a copper sheath, as well as a stair channel on top of the battery pack and using of nanofluid as cooling fluid, has been studie...

متن کامل

Management of electric and thermal energy consumption in residential building

In residential section, Studies have shown that, along with the use of various household consumption management techniques, the so-called hubs of energy can also be used to improve the performance and management of home energy management. In each electrical energy system, customers are aiming to minimize their energy costs. In this paper, it can be seen that in each home a home-made residential...

متن کامل

Research on Properties of Fluid Pressure Drop for Electric Vehicle IGBT Pin Fin Heat Sink

The Performance of electric vehicle IGPT Pin fin heat sink can be measured by the temperature field and the fluid pressure and other parameters. In order to improve the cooling effect of Pin fin heat sink, diameter, length and distance of the fin was optimized combination. The relationship between pressure drop of the water inlet, outlet and pin fin parameters was analyzed and calculated. It wa...

متن کامل

ذخیره در منابع من


  با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید

برای دانلود متن کامل این مقاله و بیش از 32 میلیون مقاله دیگر ابتدا ثبت نام کنید

ثبت نام

اگر عضو سایت هستید لطفا وارد حساب کاربری خود شوید

عنوان ژورنال:

دوره   شماره 

صفحات  -

تاریخ انتشار 2015