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Building the Plug-In Hybrid: The Battery Challenge

beth_battery
Beth Lowery addresses the audience

By Beth Lowery
Vice President, GM Environment and Energy

In January, GM caused great excitement when we revealed the Chevrolet Volt, our plug-in electric hybrid concept vehicle. Since that time, we have received many questions about the car, particularly relating to the challenges of battery technology.

Today, I led a discussion before 100 members of the media and bloggers who joined in person and by webcast. The battery briefing: (1) introduced GM's new battery team and summarized where we've been — GM learned from its past work with the EV1 and lead acid batteries; (2) where we are — GM has evolved to nickel metal hydride batteries in vehicles like the current Saturn Vue Green Line; and (3) where we're going — to make a production-worthy car, the vehicle must meet a potential car buyer's expectations in terms of performance, cost, safety and reliability — and the battery is an integral part of that process.


Joining me were leaders from technology partners like Johnson Control-Saft, A123 Systems and Cobasys. Each spoke about the challenges in developing a lithium ion battery that is safe, low cost and as efficient and long-lasting as possible. Each is looking at refining materials and improving battery chemistry to develop a product that will be used in GM's future vehicles.

Whatever the battery looks like, it will need to perform in all situations — from quick acceleration to climbing steep hills. The energy storage needed to give the vehicle its range is equivalent to the power needed to run a laptop continuously for weeks. Lithium ion is the best solution to provide the energy and packaging profile demanded by these vehicles.

These efforts are all part of GM's commitment, as first laid out by Rick Wagoner at the L.A. Auto Show to develop more diverse, more secure and cleaner energy pathways.

Finally, for those of you who are wondering, "What about GM's hydrogen fuel cell program? Is it dead?" No, absolutely not. GM's battery program in no way diminishes GM's commitment to developing hydrogen fuel cell technology. The fuel cell program remains on track, with 100 fuel-cell powered Chevrolet Equinoxes hitting the streets later this year as part of our Project Driveway test fleet.

Through these efforts, GM continues to address the bigger issues of the environment, national security, dependence on foreign oil, technological leadership and new, diverse pathways for the future of transportation.

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