PDF Publication Title:
Text from PDF Page: 066
III.B.7 Stand Alone Battery Thermal Management System Johnson – NETL, Brodie – DENSO study. The type of Equivalent Circuit model is DC Resistance-Capacitor (RC). After the battery model is created in Phase I, Phase II will involve incorporating the battery model with a thermal system model. This may not be easy because this needs to include a battery management system and influence of temperature from the vehicle cabin and the ambient to the battery pack. The conditions used for the evaluation are provided by Chrysler based on its experience with specifying the battery packs for electric vehicles. Each concept for the thermal system will be run, using the simulation program, through each driving and ambient temperature scenario. After that, the battery life will be determined using the NREL battery life model. Then, a comparison can be made between various thermal system concepts and the effect on battery life. If battery life is increased, the battery pack size can be reduced and still achieve the target life span for the battery packs. Results Evaluation conditions were established among all members of the project, with strong input from Chrysler. This includes warming the battery pack from cold soak, cooling the battery from a hot soak, three drive profiles, and two battery charging conditions. These conditions will be used next year when the thermal system is developed in the simulation program. Basic thermal characteristics of the battery cells were determined and used to establish the battery pack simulation model in AMEsim. An image of the battery simulation model is shown in Figure III - 71. There are five key parts of the model; inputs, electrical controls, battery pack model, thermal controls and thermal model. The inputs include the drive profile conditions. (Charge and discharge rate of the battery pack.) The electrical controls simulate a battery management system and monitor items like state of charge. The battery pack model simulates the battery cells based on equivalent circuits model. Thermal controls monitor thermal characteristics and make decisions on whether heating or cooling is needed. Finally, the thermal model processes the ambient conditions of the battery pack which includes ambient temperature, cabin temperature and solar load plus other inputs. Figure III - 71: Battery model using AMEsim Using the battery model in Figure III - 71, one roadblock that was encountered was the time to run the simulation. There are about 25 scenarios that will be run on each thermal system technology to find the best option. However, simulation time was almost 80 hrs for just one scenario. After optimizing the simulation model for speed, and using a faster PC, the simulation time was reduced to 10 hrs. Further work will be done to further optimize the model and increase the speed. Conclusions and Future Directions Because of the roadblock encountered with simulation speed, the project is delayed approximately 1.5 months. However, there is a recovery plan to get the project on schedule by the middle of 2014. Because of the delay, there are currently no results to show how well the new system will reduce the battery pack compared to the base system. These works will occur in November and December of 2013. The final results of the simulations and thermal system performance should be ready to publish at the 2014 Annual Merit Review. Energy Storage R&D 88 FY 2013 Annual Progress ReportPDF Image | Advanced Battery Development
PDF Search Title:
Advanced Battery DevelopmentOriginal File Name Searched:
APR13_Energy_Storage_d_III_Adv_Battery_Dev_0.pdfDIY PDF Search: Google It | Yahoo | Bing
Turbine and System Plans CAD CAM: Special for this month, any plans are $10,000 for complete Cad/Cam blueprints. License is for one build. Try before you buy a production license. More Info
Waste Heat Power Technology: Organic Rankine Cycle uses waste heat to make electricity, shaft horsepower and cooling. More Info
All Turbine and System Products: Infinity Turbine ORD systems, turbine generator sets, build plans and more to use your waste heat from 30C to 100C. More Info
CO2 Phase Change Demonstrator: CO2 goes supercritical at 30 C. This is a experimental platform which you can use to demonstrate phase change with low heat. Includes integration area for small CO2 turbine, static generator, and more. This can also be used for a GTL Gas to Liquids experimental platform. More Info
Introducing the Infinity Turbine Products Infinity Turbine develops and builds systems for making power from waste heat. It also is working on innovative strategies for storing, making, and deploying energy. More Info
Need Strategy? Use our Consulting and analyst services Infinity Turbine LLC is pleased to announce its consulting and analyst services. We have worked in the renewable energy industry as a researcher, developing sales and markets, along with may inventions and innovations. More Info
Made in USA with Global Energy Millennial Web Engine These pages were made with the Global Energy Web PDF Engine using Filemaker (Claris) software.
Sand Battery Sand and Paraffin for TES Thermo Energy Storage More Info
| CONTACT TEL: 608-238-6001 Email: greg@infinityturbine.com | RSS | AMP |