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Team Shock Therapy

Team Shock Therapy. Team members: Tim Blake EE Senior Travis McMillen EE Senior David Bankhead EE Senior. Advisors: Greg Donohoe Herb Hess Jim Klein. Opportunity Statement. NAVY has electric submarines and ships Batteries for these are replaced every 4 years

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Team Shock Therapy

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  1. Team Shock Therapy Team members: Tim Blake EE Senior Travis McMillen EE Senior David Bankhead EE Senior Advisors: Greg Donohoe Herb Hess Jim Klein

  2. Opportunity Statement • NAVY has electric submarines and ships • Batteries for these are replaced every 4 years • Costs NAVY a lot of money to replace batteries • Looking for a way to extend battery life

  3. Sponsor

  4. Shock Therapy Timeline 9 months projected plan 2011-2012 Sep Oct Nov Dec Jan Feb March April May Understand project Engineering Expo Visit Bayview site Define parameters Order parts and implement into project Draw conclusions/ complete project Fabricate project Implement Ideas and schematics Final Testing Begin Testing

  5. Project Needs • Compare pulse charging vs. standard (constant-current, constant-voltage) charging • Develop an algorithm and test setup to characterize battery rejuvenators • Find the best charging methods (types of rejuvenators) for the Navy • Current charging system will be replaced in the near future and they want to implement the best charging methods possible. • Increase battery life • Develop a way to rejuvenate “dead” batteries

  6. Project Learning • Different charging methods are used to rejuvenate batteries • CCVT(Constant Current Constant Voltage) • Pulse • Mostly dealing with pulse chargers • Renaissance • BatteryMinder • Types of batteries: • 12 & 2 Volt, dry cell, lead acid batteries

  7. How do you know when a battery’s life is done? • Currently batteries are known to be unusable if they cannot be charged to a certain voltage. • Our batteries are dry cell batteries so they cannot be checked by pH or sulfate levels. • One of the primary goals of this project is to determine if there are any parameters other than voltage drop that exist which would indicate a “dead” or “dying” battery.

  8. Preliminary concepts • Design a battery rejuvenator of our own based on analysis • Compare with commercial product • Create test set up that will characterize pulse chargers • Software algorithm • Manual testing procedure

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