1 ONR HEV HMMWV Team Assault and Battery Team Members: Linnea Anderson, Bryan Blakley, Matthew Braley, Danny George, Slade Klein, Chad Schierman, Matt Shaw, Albert Whetstone Team Advisors: Steve Beyerlein, Herb Hess Team Mentors: Brice Quirl, Yu-Chen Lu

2 Outline Background Overview of Project Current State of Affairs Electrical Systems Mechanical Systems Design Options Work Schedule Budget Conclusion

3 Background Team Assault and Battery has received a military grade HMMWV from the U.S. Marines that has been previously converted to a Hybrid Electric Vehicle (HEV). It is currently in a non-running condition due to various subsystem conflicts and possible issues with non-working parts. The focus will be to unify the electric bus to 360V. The next focus is to install monitors and thermal controls to test the performance of the next generation of lead-acid batteries that are currently in development. This will require the implementation of an advanced control and display system. Also we will be working to incorporate aspects of regenerative braking control and advanced battery management systems. The HMMWV will have operational characteristics as close to those of a normal HMMWV as possible.

4 Needs-Specifications Get the HMMWV self propelled Unify the battery bus to 360 VDC Regulate the battery box to 100±20 °F Instrument the battery pack and vehicle

5 Current State of Affairs Electronics submersed for an extended period of time Unknown condition of power plant/ engine 24 VDC system requires upgrading No documentation for current systems

6 Current State of Affairs

7 Overview

8 Electrical Systems

9 Electrical Systems - Instrumentation Alternative 1 – Microcontroller Based Cons:  Extensive development time  Expandability issues  Task Specific  Exponential learning curve Pros:  Less initial cost  Distributed computing  Task specific  Low power

10 Electrical Systems - Instrumentation Alternative 2 – NI PXI Based Cons:  Larger initial cost  No sleep mode Pros:  Ready to connect  Low development time  Highly reconfigurable  Extremely expandable  Graphical interface capable

11 Electrical Systems Power distribution  Buck converter  12V Auxiliary Batteries  Vehicle auxiliary systems

12 Electrical Systems Alternator  Starting circuit AC 150 integration  Inputs  CAN bus Thermal Management  Monitor  Control

13 Battery Box Configuration Substitute Batteries

14 Battery Box Configuration Advanced Lead Acid Batteries

15 Thermal Management Alternative 1 – Fans and Blankets Cons:  Moderate power consumption  No active cooling Pros:  Distributed heat source  Not dependent on APU for heat source  Quick response time  Location specific heating  Low maintenance

16 Thermal Management Alternative 2 – Engine Heat Transfer Cons:  Engine must be operating  Slower response time  Less temperature gradient control Pros:  Readily Available  Recaptures otherwise lost energy

17 Motor Mounting Requires Battery Box Modification Fabrication of Mechanical Adapters  Environmental protection  Torque control  Gear reduction

18 Work Schedule

19 Budget

20 Conclusion Background Overview of Project Current State of Affairs Electrical Systems Mechanical Systems Design Options Work Schedule Budget

21 Questions?

22 Team Photograph