Some believe the answer to tackling emission regulations is lithium-ion full electric vehicles, but the lead battery industry believes the answer lies with 48V hybrid applications.
One such company is US start-up Gridtential, which is pushing its Silicon Joule technology to one day be the 48V industry standard by making lead batteries cheaper and boosting performance.
Advanced battery firm Gridtential has gained $6 million of investment from a group of the industry’s biggest lead-acid suppliers and distributors.
Final testing has confirmed a 48V lead-carbon battery can help reduce fuel consumption by 10-12%– equivalent to sub-80g/km of CO2 emissions.
That puts the test vehicle well inside the current European Union agreed 95 g/km of CO2 limit, which will come into 100% affect by 2021.
The solution to auto OEMs meeting emission requirements will be unveiled when a 48V lead-carbon consortium unveils its findings next week.
The ADEPT (advanced diesel-electric powertrain) consortium programme will showcase its advanced mild hybrid technologies with 48V ‘intelligent electrification’ presented at LCV2016.
German vehicle-maker Audi is in the middle of testing a 48V lithium-ion system for full electric and mild-hybrid vehicles.
The prototype system allows the battery to offer 0.5 kWhs and a peak output of 13 kW through the use of electromechanical rotary dampers to harness regenerative breaking energy.
Claims that a 48V lead-carbon powertrain architecture can help OEMs meet emission requirements of near term next generation vehicles is set to be proven within months.
The ADEPT (advanced diesel-electric powertrain) consortium programme is due to demonstrate its advanced mild hybrid technologies with 48V ‘intelligent electrification’ this September.
A £1 million investment by powertrain producer Controlled Power Technologies (CPT) could signal a breakthrough for lead-carbon batteries in hybrid vehicles as the company pushes for 48V batteries in mild hybrid vehicles.
The UK-based firm says that while its switched-reluctance technology is battery agnostic, tests have shown that lead-carbon would be the ideal chemistry for the job.
Some so-called battery events don’t even give them a platform but this wasn’t the case this week when tireless lead-acid old stager Allan Cooper delivered a cracking account of how advanced lead-acid batteries will bring serious environmental and cost benefits to the car industry.
Speaking at IQPC Automotive’s Second International Conference on Automotive 48V Power Supply Systems, Cooper said the low additional cost of introducing 48V mild hybrid powertrains is proving a major attraction to carmakers, because it will help them comply with stringent CO2 regulations being introduced in 2020 with even tougher rules following in 2025.a
German OEM Volkswagen will not switch to a single 48V power supply system in mild hybrids in the near future, according to Florian Kühnetz, development engineer at Volkswagen.
Volkswagen will focus on a dual voltage power supply comprising a 12V lead-acid battery and a 48V lithium-ion battery, said Kühnetz at the 2nd 48V automotive power supply conference in Düsseldorf, Germany.