Abstract
A novel bipolar packaging design for a nickel metal hydride (NiMH) battery has been developed. As with other bipolar designs, advantages include reduced battery resistance and volume when compared with more conventional approaches. These advantages make the bipolar NiMH an excellent energy and power source for existing and emerging high voltage, high power applications. In this paper, we give an account of our recent experiences with the design, with a focus on designs for high power batteries for hybrid electric vehicles and high energy batteries for plug-in hybrids. In addition, we discuss results from a hybrid electric vehicle to plug-in hybrid electric vehicle conversion utilizing a high energy bipolar NiMH battery. The conversion and results demonstrate the successful implementation of the battery design in an automotive application.
Highlights
As the cost of oil based fuels continues to rise, and the concerns of the environmental effects from burning such fuels grow, alternative means of energy are being explored for the transportation industry
Governments and individual consumers are demanding cheaper and cleaner sources of energy to power small and large consumer vehicles, as well as public transportation vehicles. One such means of supplying this energy is through energy storage such as rechargeable batteries. These can be used in multiple transportation applications, including electric bikes and scooters, hybrid electric vehicles (HEVs), plug-in hybrid electric vehicles (P-HEVs), and various configurations of electric buses
From this data we are able to conclude that the bipolar design results in a battery that has the equivalent performance of the OEM HEV battery, while occupying 30% less volume
Summary
As the cost of oil based fuels continues to rise, and the concerns of the environmental effects from burning such fuels grow, alternative means of energy are being explored for the transportation industry. Governments and individual consumers are demanding cheaper and cleaner sources of energy to power small and large consumer vehicles, as well as public transportation vehicles. One such means of supplying this energy is through energy storage such as rechargeable batteries. These can be used in multiple transportation applications, including electric bikes and scooters, hybrid electric vehicles (HEVs), plug-in hybrid electric vehicles (P-HEVs), and various configurations of electric buses. A bipolar battery¶s most attractive attributes involve the reduction of the current path through the electrodes, as well as potentially simplified battery manufacturing. The reduced current path leads to a design that has lower internal resistance, with the capability of supplying much
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