Durable PbC Batteries Facilitate Large Fuel Efficiency Gains
Axion Power International’s PbC brand lead-carbon batteries are being tested on a Peterbilt 386 tractor converted to series hybrid electric operation by ePower Engine Systems of Florence, Ky. The PCB batteries’ tolerance to repeated charge cycles is enabling significant fuel efficiency gains.
The truck has 56 PbC batteries operating in a string configuration with proprietary Axion data logger. “Our batteries have an inherent ability to self-regulate,” says Axion CEO Tom Granville – and therefore, he says, don’t require a conventional battery management system.
Axion’s other key advantage is that its batteries can be manufactured on a conventional lead acid battery production line (F&F, February 25) – “The only thing that’s different is the negative electrode, which is an activated carbon electrode,” Granville told F&F. The electrode doesn’t deteriorate like a common lead acid battery’s electrode, which is why the Axion product can endure the thousands of discharge cycles required of a hybrid.
50% Mileage Improvement?
According to an Axion (OTC QB: AXPW) release, “ePower’s proprietary, patent protected, diesel electric hybrid drive train, with the PbC batteries, efficiently powers the converted vehicles, and is able to reduce fuel consumption through the unique application of power sharing between engine and batteries.”
“Our PbC batteries and management system, together with the ingenuity and intellectual property of ePower, are cutting fuel consumption by a significant factor,” Granville said in the announcement.
“Our early testing has gone well and has demonstrated an ability to increase miles per gallon by more than 35%,” Granville said.
“We believe, and more importantly ePower believes, that with improved synergy of function between the proprietary hybrid drive train and our PbC batteries, that improvements in miles per gallon exceeding 50% can be achieved…
ePower CEO Praises PcB Batteries Too
“The extremely high charge acceptance of our batteries over thousands of cycles, combined with the inherent battery voltage equalization in large string applications, make the PbC battery a great value proposition in the ePower system.”
“We have worked with several types of batteries, including advanced lead-acid batteries, and have come to the firm conclusion that even VRLA or glass-mat batteries are not capable of sustained performance in this demanding application for over-the-road transport,” ePower CEO Andy Claypole says in the Axion announcement.
“They start out meeting specification,” Claypole said, “but their performance degrades significantly, often, requiring a complete replacement within a matter of months. The PbC batteries, on the other hand, are designed for sustained long-lasting performance geared for the life of our system, and the rigors of many charge/discharge cycles.”
Contact information is only available to premium subscribers. Click here to purchase a subscription.
Source: Axion Power with Fleets & Fuels follow-up