Johnson Controls Shrinks Micro-Hybrid Battery Pack to Size of Shoebox
November 5, 2013 11:41 AM
comment(s) - last by
It's expected to have lower up-front costs for fuel efficiency, but only has a lifespan of four years on the battery
A Milwaukee, Wisconsin-based global automotive supplier has developed a smaller micro-hybrid battery pack meant to make gains in fuel efficiency more affordable.
The Detroit News
has reduced the size of the micro-hybrid battery pack from that of a car trunk to the size of a shoe box. The system consists of a 48-volt lithium-ion battery pack and an advanced low-voltage lead-acid battery. It supports higher power loads and regenerative braking.
Micro-hybrid technology can be implemented in large gas or diesel-powered vehicles like SUVs and trucks. The idea is to make these vehicles more efficient at a lower price.
For comparison purposes, a micro-hybrid system with an advanced, lead-acid 12-volt battery coupled with the lithium-ion battery and start-stop technology will improve fuel efficiency about 15 percent (compared to a standard internal combustion engine). Start-stop systems alone, where the engine stops running when a vehicle is stopped and restarts when the accelerator is used, has about an 8 percent improvement.
While neither of these beat the 20 percent improvement from
a full hybrid
, the micro-hybrid system is pretty close. And with Johnson Controls' smaller system, the price will be even lower, allowing more drivers to pay hundreds of dollars instead of thousands for full hybrids.
But there is one feature of a micro-hybrid system that may be seen as a downfall: the smaller lithium-ion battery has the lifespan of about four years while larger lithium-ion batteries in full hybrids have a 10-year lifespan. That means the battery will have to be changed every four years, which is reportedly an easy process, but could be costly.
But micro-hybrid systems are expected to become more popular in the U.S. auto market by the end of the decade. Global sales projections for micro-hybrids are estimated to be about 40 million annual sales by 2020. Currently, there are about 5 million global annual sales (the systems are most popular in Europe and China).
The systems are likely gaining popularity in the U.S. due to the new
Corporate Average Fuel Economy
(CAFE) requirements, which state that automaker’s fleetwide average fuel economy to equal 54.5 miles per gallon by 2025.
The Detroit News
This article is over a month old, voting and posting comments is disabled
RE: 75% of the output for 10% of the cost
11/7/2013 5:55:19 PM
I think Toyota was aiming at a 50% gain in economy through hybridization. I think the reality on say the Camry is more like 35%. I think the micro hybrid cost is supposed to be around $300 to $400 more over a conventional vehicle. Probably more like half the benefit for 1/5th the cost. Johnson Controls is hoping to find an optimization with maximum benefit for minimum cost which will popularize hybridization. They define Micro hybrid as having a traction pack with less than 60V, nothing to do with vehicle size or what type of assist is provided. Sub 60V would provide a much lower electrocution hazard than a regular hybrid pack. The main purpose of the traction pack would probably be to run ancillaries. This would allow the electrification of more of the vehicles systems, oil pumps, water pumps, e-assisted brakes, HVAC etc. Electrification allows better load matching for more efficient operation and allows regenerative braking to contribute to some of that demand while eliminating parasitic loads from the engine. The higher pack voltage would also make the stop start function more effective than implementations in conventional vehicles.
"A lot of people pay zero for the cellphone ... That's what it's worth." -- Apple Chief Operating Officer Timothy Cook
Hybrid Vehicle Market Share Climbs to 4% of Automotive Market
April 2, 2013, 9:51 AM
White House Finalizes 54.5 MPG CAFE Standards for 2017-2025 Model Years
August 28, 2012, 2:52 PM
Hot Air? President Obama, G7 Pledge to Eliminate Most Fossil Fuel Use by 2100
June 8, 2015, 5:40 PM
Study Predicts Self-Driving Vehicles Could Rake in Billions
March 6, 2015, 8:34 AM
Dual-Motor Tesla Model S P85D's "Insane Mode" Shocks Passengers
January 28, 2015, 11:18 PM
2016 Cadillac CTS-V Packs 640 hp Punch with 200 mph Reach
January 23, 2015, 3:25 PM
BMW Testing Tech to Allow Users to Auto-Park, Summon Cars Via Smartwatch
December 16, 2014, 9:30 AM
Lamborghini Offers Up $6,000 Leather-Bound Android Smartphone
December 12, 2014, 3:12 PM
Most Popular Articles
Windows XP, Vista Users Can Get Free Windows 10 Upgrade Thanks to Loophole
June 23, 2015, 2:23 PM
SanDisk's 200GB microSDXC Card Turns Smartphones Into Enviable PMPs
June 26, 2015, 2:02 PM
U.S. Navy Spends $9M USD to Cling to Windows XP, Office 2003
June 24, 2015, 2:03 PM
Under the Hood: Digging Into Sony's New CUH-1200 PS4, 1 TB Ultimate Player Ed.
June 23, 2015, 10:33 AM
Xbox Outsold 108-to-1 By PS4 in Japan, Weekly Sales Fall to 100 Units
June 22, 2015, 1:54 PM
Latest Blog Posts
Sceptre Airs 27", 120 Hz. 1080p Monitor/HDTV w/ 5 ms Response Time for $220
Dec 3, 2014, 10:32 PM
Costco Gives Employees Thanksgiving Off; Wal-Mart Leads "Black Thursday" Charge
Oct 29, 2014, 9:57 PM
"Bear Selfies" Fad Could Turn Deadly, Warn Nevada Wildlife Officials
Oct 28, 2014, 12:00 PM
The Surface Mini That Was Never Released Gets "Hands On" Treatment
Sep 26, 2014, 8:22 AM
ISIS Imposes Ban on Teaching Evolution in Iraq
Sep 17, 2014, 5:22 PM
More Blog Posts
Copyright 2015 DailyTech LLC. -
Terms, Conditions & Privacy Information