ONR HEV HMMWV

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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
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Outline

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

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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.

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Needs-Specifications

• Get the HMMWV self propelled
• Unify the battery bus to 360 VDC
• Regulate the battery box to 10020 F
• Instrument the battery pack and vehicle

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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

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Current State of Affairs
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Overview
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Electrical Systems
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Electrical Systems - Instrumentation

• Alternative 1 Microcontroller Based

• Pros
• Less initial cost
• Distributed computing
• Task specific
• Low power

• Cons
• Extensive development time
• Expandability issues
• Task Specific
• Exponential learning curve

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Electrical Systems - Instrumentation

• Alternative 2 NI PXI Based

• Pros
• Ready to connect
• Low development time
• Highly reconfigurable
• Extremely expandable
• Graphical interface capable

• Cons
• Larger initial cost
• No sleep mode

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Electrical Systems

• Power distribution
• Buck converter
• 12V Auxiliary Batteries
• Vehicle auxiliary systems

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Electrical Systems

• Alternator
• Starting circuit
• AC 150 integration
• Inputs
• CAN bus
• Thermal Management
• Monitor
• Control

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Battery Box Configuration Substitute Batteries
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Battery Box Configuration Advanced Lead Acid
Batteries
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Thermal Management

• Alternative 1 Fans and Blankets

• Pros
• Distributed heat source
• Not dependent on APU for heat source
• Quick response time
• Location specific heating
• Low maintenance

• Cons
• Moderate power consumption
• No active cooling

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Thermal Management

• Alternative 2 Engine Heat Transfer

• Pros
• Readily Available
• Recaptures otherwise lost energy

• Cons
• Engine must be operating
• Slower response time
• Less temperature gradient control

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Motor Mounting

• Requires Battery Box Modification
• Fabrication of Mechanical Adapters
• Environmental protection
• Torque control
• Gear reduction

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Work Schedule
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Budget
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Conclusion

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

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Questions?
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Team Photograph