michigan tech’s e-rush
DESCRIPTION
Michigan Tech’s E-Rush. Presented by: Terry Gregoricka Adrienne Piron. Abstract. 2010 Polaris Rush Electric Powered Powered by Hi Performance Golf Cars AC-20 Curtis motor controller CALB 70AH batteries MTU designed rear drive system. Design Strategy. Range Towing capacity Innovation - PowerPoint PPT PresentationTRANSCRIPT
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Michigan Tech’s E-Rush
Presented by:Terry GregorickaAdrienne Piron
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Abstract
• 2010 Polaris Rush• Electric Powered• Powered by Hi
Performance Golf Cars AC-20
• Curtis motor controller• CALB 70AH batteries• MTU designed rear drive
system
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Design Strategy
• Range• Towing capacity• Innovation• Safety• Weight, handling, acceleration, cost, and
durability.
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Chassis and Electrical Design
• 2010 Polaris Rush • Lightweight• Adjustable rear
suspension• Low cost
• Rear mounted motor• Easily accessible• “All-in-one system”• HV and 12 V system
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DC to DC Converter
• Mean Well SD-150D-12• Similar to AC
Transformer• Complete Isolation
between HV and LV • Isolation up to 1500V• Range of 72-144V
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Accumulator System• Batteries • Battery Management System
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Batteries
• 35 Lithium Iron Phosphate• Selected for stability characteristics • Chinese Aviation Lithium Batteries (CALB)• Connected in Series• Produces 114V (3.2V each)• Short time discharge rating of these cells is
700A
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Battery Management System
• Was necessary to manage the batteries• Orion has one of the smartest BMS modules
on the market• Thus can manage a large range of parameters• Monitors voltage, current, temperate, and
controls the charging system
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Battery Containment
• Goal was to maintain low center of gravity• Constructed using 1/8 inch 6061-T6 aluminum • Modeled to be similar to original engine• Analysis was done on CAD to apply loads
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Battery Containment
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Safety Precautions
• Isolated display to prevent HV going to dash• Nomex and polycarbonate lined battery box• Bender IR155-3204 ground fault circuit
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Speed Control
• Curtis 1238-7501 motor controller• Converts DC to AC• 3 phase motor• Curtis Spyglass 840 for operator to view
various parameters
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Motor and Motor Controller
Motor Controller under Charger AC-20 Motor
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High Voltage Fusing
• Only 1 fuse is in the battery pack• Rated for pack voltage and continuous ampere
rating of the wire• Using a 250A Bussman slow blow fuse
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System Charging
• On board charging system• 1 kW delta-q, qui-q charger• BMS and charger are in communication• BMS states if it is safe to charge
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Power Transmission
• Motor and brakes located in the rear• Leads to more efficient drive system • Direct motor to track system
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Weight
• Stock chassis 271 lbs• Battery pack weight 192 lbs• Battery housing weight 25 lbs• Motor and controller 65 lbs• Final design weight 600 lbs
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MSRP
• The total cost of our sled was calculated to be $16,041.47
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Thank You Sponsors!
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Thank You Sponsors!