Attributes of the Chevrolet Volt

Attributes of the Chevrolet Volt

VOLT Lithium-Ion Battery

288 Cells70% of the Cost Module

Pack

VOLT Lithium-Ion Battery

The Battery ChallengeThe Battery ChallengeLithium-Ion Battery Pack

16 kWh (8kWh usable)

High energy/High Power

Efficiently packaged> 6 ft. in length

> 375 lbs

Reasonable cost

10 yr life/150,000 miles

Lithium-Ion Battery Pack

16 kWh (8kWh usable)

High energy/High Power

Efficiently packaged> 6 ft. in length

> 375 lbs

Reasonable cost

10 yr life/150,000 miles

Early Vehicle Testing and Learning

Next Phase of Testing and Learning

Next Phase of Testing and LearningMule Vehicles now in Test

Charging and Infrastructure

Charging Power Level

• 3.3 kW/240V charging will usually require a one time investment to upgrade the garage with a dedicated 240V circuit

• Full charge is <3 hours – very acceptable• Fast charging will have customer value

• 1.2 kW/120V charging may work depending on the customer’s situation

• Full charge in minimum 8 hours (temperature dependent)• May require understanding and control of other devices on the circuit

• Charger and control logic is on-board the vehicle

• Designed for global voltages• 120V charge cord comes with the

vehicle in NA

GM/EPRI/Utility Collaboration for Electrical Infrastructure• The Collaboration includes more than 40 Utilities in North America… many the

industry’s thought-leaders in electric transportation and grid interaction

GM / EPRI / Utility Collaboration

Why collaboration is important?

Impact on the Electric Grid

Electricity: An important energy source withsignificant capacity to support transportation

• 10 million E-REVs in 2010 would add a load that is less than 1% of the total grid load

Electric Grid Design for Peak Demand

• The last 5% of the system’s capacity is needed less than 1% of the time

• The last 25% of the system’s capacity is only needed about 10% of the time

• The real objective of smart charging is simply to avoid these peaks with most of the vehicles out there

• This has tremendous value for the utilities – and very achievable once the technology is in place to manage vehicle charging

For example, in California like most hot-weather states with a lot of air conditioning:

Electric Grid Design for Peak DemandVolt leverages off-peak for charging

820 MILLION VEHICLES<1% are Electrified Vehicles(Hybrid, Battery Electric or Fuel Cell)

Will Take >20 Years to ReplaceThem with More Energy

Efficient Vehicles

Thank you