The next-generation Prius plug-in hybrid gets a little greener with a the rooftop solar panel for recharging the batteries. While Toyota already produces a Prius with a rooftop solar system, that panel was only used to drive the air conditioning system as apparently Toyota found it to risky to integrate this new technology into the drive system.
Sun power only amplifies the eco-car cred of one of the most efficient vehicles. The cells charge the car even when it is parked and can boost fuel efficiency by as much as 10 percent by allowing longer electric-only driving times.
Unfortunately for U.S. fans of all things green, the technology will only be offered in the Japan and European versions of the car -- at least initially. But Koji Toyoshima, chief engineer of the Prius plug-in and its standard Prius hybrid sibling, says Toyota aims to introduce the panels Stateside too. The problem: The Japan market solar panels are laid on reinforced glass sheeting that doesn’t pass America’s more stringent rollover crash tests.
Toyota doesn’t have the technology to laminate the photo-voltaic cells in a resin that won’t shatter dangerously during a rollover, Toyoshima said. But the company is working on a solution so that it can introduce the solar panels to the U.S. version of the car during its life-cycle.
In Japan, the plug-in Prius will be called the Prius PHV. Toyota has not announced whether the solar panels will be standard or optioned here.
Various uses
Aside from recharging the batteries during a standstill, the solar panels also supply electricity to accessories such as lamps, power windows and air conditioning when the car is running, Toyota says. As Toyota whittles down their cost, Toyoshima said the company hopes to introduce the solar-powered technology to other hybrids across the lineup.
Advancements in solar technology have made solar ready to be used as an additional power source for cars.
Tesla recently made a bid to purchase SolarCity - a hint that Tesla may have similar plans.
Showing posts with label hybrid. Show all posts
Showing posts with label hybrid. Show all posts
Sunday, June 26, 2016
Tuesday, July 14, 2015
Bosch's 48V mild hybrid system to debut this year
With so many innovative vehicle concepts testing the market we almost forget that most vehicles sold are still traditional gasoline vehicles. Such vehicles can be made more fuel-efficient by adding a mild hybrid system.
A new trend in the development of mild hybrid systems has been the use of 48 Volt lithium-ion batteries. These batteries replace lower voltage systems, often using 12V lead-acid batteries (or occasionally even nickel-metal hydride (NiMH) batteries). This has been made possible by advances and cost savings in li-ion technology. According to Just-Auto a 48V architecture provides about four times the energy recuperation from regenerative braking than is available on the traditional 12V system. Full hybrids use much higher voltages, for instance the Toyota Prius hybrid synergy drive uses a 220V battery.
Many automotive suppliers have jumped on the band-wagon, including Continental, Johnson Controls and Bosch.
Automotive news Europe interviewed Bosch executives about this subject recently. In 2013, GS Yuasa, Bosch and trading house Mitsubishi Corp. formed a joint venture to develop low-cost, high energy-density lithium ion batteries by 2020. A Bosch executive told Automotive news that they are "on a good path" toward their goal of developing a lithium ion battery that costs half as much as today's batteries but has twice the energy density.
Such advances will greatly popularize the use of hybrid and electric-only drive trains. Bosch expects such drive trains to account for 15 percent of the global automotive market by 2020. Mild hybrids are expected to break through with the introduction of 48V technology and could account for most of those vehicles.
Bosch also is rolling out a new 48 V mild-hybrid system this year that it says will improve fuel efficiency at minimal extra cost. Bosch has named its system "Boost Recuperation System" (BRS) which features an electric motor, with a 48V 0.25kWh lithium-ion battery and DC/DC converter. The system potentially reduces fuel consumption by 5 to 18%.
BRS offers four functions:
- coasting
- start-stop
- recuperation
- torque boost
When coasting and during start-stop the 48V battery keeps the car's electronics and climate control running. Recuperation enables the car to recover braking energy. The battery can provide the vehicle a torque boost of up to 10 kW.
Bosch's system debuts this year in a nameplate for Europe offered by a European automaker, executives said. They declined to name the customer. Bosch aims to sell the mild hybrid system in other markets, including North America.
A new trend in the development of mild hybrid systems has been the use of 48 Volt lithium-ion batteries. These batteries replace lower voltage systems, often using 12V lead-acid batteries (or occasionally even nickel-metal hydride (NiMH) batteries). This has been made possible by advances and cost savings in li-ion technology. According to Just-Auto a 48V architecture provides about four times the energy recuperation from regenerative braking than is available on the traditional 12V system. Full hybrids use much higher voltages, for instance the Toyota Prius hybrid synergy drive uses a 220V battery.
Many automotive suppliers have jumped on the band-wagon, including Continental, Johnson Controls and Bosch.
Automotive news Europe interviewed Bosch executives about this subject recently. In 2013, GS Yuasa, Bosch and trading house Mitsubishi Corp. formed a joint venture to develop low-cost, high energy-density lithium ion batteries by 2020. A Bosch executive told Automotive news that they are "on a good path" toward their goal of developing a lithium ion battery that costs half as much as today's batteries but has twice the energy density.
Such advances will greatly popularize the use of hybrid and electric-only drive trains. Bosch expects such drive trains to account for 15 percent of the global automotive market by 2020. Mild hybrids are expected to break through with the introduction of 48V technology and could account for most of those vehicles.
Bosch also is rolling out a new 48 V mild-hybrid system this year that it says will improve fuel efficiency at minimal extra cost. Bosch has named its system "Boost Recuperation System" (BRS) which features an electric motor, with a 48V 0.25kWh lithium-ion battery and DC/DC converter. The system potentially reduces fuel consumption by 5 to 18%.
BRS offers four functions:
- coasting
- start-stop
- recuperation
- torque boost
When coasting and during start-stop the 48V battery keeps the car's electronics and climate control running. Recuperation enables the car to recover braking energy. The battery can provide the vehicle a torque boost of up to 10 kW.
Bosch's system debuts this year in a nameplate for Europe offered by a European automaker, executives said. They declined to name the customer. Bosch aims to sell the mild hybrid system in other markets, including North America.
Monday, April 13, 2015
Aluminum batteries might find application in hybrids and FCVs
New publications about battery breakthroughs appear regularly in the media. In practice however not much has changed in the field of battery technology in the last few years. Recently Stanford University came up with a new story.
This time the story is about the aluminum-ion battery. Stanford has developed such a battery that they present as very promising. Of course they are looking for investors to help further develop this technology into actual products.
The main difference with the commonly used lithium-ion battery is the use of aluminum instead of lithium.
Advantages
Aluminum offers a number of advantages compared to lithium. Aluminum does not cause a fire hazard in case of incidents. Another important advantage is the shorter charge time: Stanford has succeeded in charging the battery in only a minute. Finally the battery has a much longer life time than lithium batteries. Standford's battery could withstand 7,500 cycles without capacity decay, where a typical lithium battery lasts about 1,000 cycles. Finally aluminum is also cheaper than lithium.
Disadvantage
The major disadvantage of the aluminum is the lower voltage, about half the voltage of a lithium battery. That also leads to lower battery energy density. In other words: more batteries are needed to store the same amount of energy. That is a key disadvantage which disqualifies this battery for most of the popular applications of lithium batteries, such as mobile devices and electric vehicles.
Applications
Still there are applications where the advantages of this aluminum battery seem more important than the disadvantage. Stanford suggests using this battery for storage of excess electricity from sustainable energy sources such as wind and solar. In such a stationary application the size of the battery stack is much less relevant and life time is more crucial.
Hybrid vehicles
Although aluminum seems unsuitable for electric vehicles and plug-in hybrids, I do see opportunities for vehicle applications. Hybrid vehicles without a plug such as the Toyota Prius have a relatively small battery which can be charged and uncharged multiple times during a single trip. And it is crucial that the battery can be charged quickly as this is needed to store breaking energy. The life time of lithium batteries in hybrid vehicles is a major bottleneck. In Toyota's hybrid synergy drive system the potential capacity of the batteries is only used for a small amount in order to extend battery life. In Honda's IMA (Integrated Motor Assist) system it is even worse. Battery failure is one of the main reasons why the IMA system is unsuccessful on the market. Aluminum batteries might offer new opportunities for such hybrid systems.
Fuel Cell Vehicles
Another type of vehicles that might see use of this type of batteries is the Fuel Cell Vehicle. FCVs are in fact hybrid vehicles which use a lithium-ion battery to store energy which can be used to improve response to the gas pedal. The battery is charged from breaking energy or when you let go of the gas pedal because the fuel cell doesn't stop producing power immediately. Just like ordinary hybrid vehicles, FCVs have relatively small capacity batteries that are typically charged and uncharged multiple times during a single trip.
This time the story is about the aluminum-ion battery. Stanford has developed such a battery that they present as very promising. Of course they are looking for investors to help further develop this technology into actual products.
The main difference with the commonly used lithium-ion battery is the use of aluminum instead of lithium.
Advantages
Aluminum offers a number of advantages compared to lithium. Aluminum does not cause a fire hazard in case of incidents. Another important advantage is the shorter charge time: Stanford has succeeded in charging the battery in only a minute. Finally the battery has a much longer life time than lithium batteries. Standford's battery could withstand 7,500 cycles without capacity decay, where a typical lithium battery lasts about 1,000 cycles. Finally aluminum is also cheaper than lithium.
Disadvantage
The major disadvantage of the aluminum is the lower voltage, about half the voltage of a lithium battery. That also leads to lower battery energy density. In other words: more batteries are needed to store the same amount of energy. That is a key disadvantage which disqualifies this battery for most of the popular applications of lithium batteries, such as mobile devices and electric vehicles.
Applications
Still there are applications where the advantages of this aluminum battery seem more important than the disadvantage. Stanford suggests using this battery for storage of excess electricity from sustainable energy sources such as wind and solar. In such a stationary application the size of the battery stack is much less relevant and life time is more crucial.
Hybrid vehicles
Although aluminum seems unsuitable for electric vehicles and plug-in hybrids, I do see opportunities for vehicle applications. Hybrid vehicles without a plug such as the Toyota Prius have a relatively small battery which can be charged and uncharged multiple times during a single trip. And it is crucial that the battery can be charged quickly as this is needed to store breaking energy. The life time of lithium batteries in hybrid vehicles is a major bottleneck. In Toyota's hybrid synergy drive system the potential capacity of the batteries is only used for a small amount in order to extend battery life. In Honda's IMA (Integrated Motor Assist) system it is even worse. Battery failure is one of the main reasons why the IMA system is unsuccessful on the market. Aluminum batteries might offer new opportunities for such hybrid systems.
Fuel Cell Vehicles
Another type of vehicles that might see use of this type of batteries is the Fuel Cell Vehicle. FCVs are in fact hybrid vehicles which use a lithium-ion battery to store energy which can be used to improve response to the gas pedal. The battery is charged from breaking energy or when you let go of the gas pedal because the fuel cell doesn't stop producing power immediately. Just like ordinary hybrid vehicles, FCVs have relatively small capacity batteries that are typically charged and uncharged multiple times during a single trip.
Tuesday, February 3, 2015
2014 good year for CNG in the Netherlands
Figures published by Aumacon show that CNG / green gas vehicles were the most popular alternative fueled vehicles in the Netherlands in 2014.
The largest vehicle category in the Netherlands in terms of sales remains the traditional gasoline car. 248,796 of these were sold in 2014. This is a drop of 6% compared to 2013. Traditional gasoline cars are slowly losing ground.
Diesel cars sales were better. 105,102 were sold in 2014, a growth of 1,5%.
The third category in the Netherlands in terms of sales is the hybrid vehicle (including plug-in hybrids and range extended electric vehicles). Compared to the top year 2013 sales decreased by 38% as a result of reduced fiscal stimulation. Despite this (as I wrote yesterday) the number of these vehicles on the road is still increasing.
Number four in the Netherlands in terms of cars on the road is LPG. Sales of LPG however are declining because the Dutch government no longer stimulates LPG despite verbally advocating its use. Sales dropped by 53% to 988. As a result the number of LPG vehicles on Dutch roads is decreasing. This is in sharp contrast to worldwide developments.
2014 was a great year for CNG / green gas vehicles. 3,232 CNG vehicles were sold, an increase of over 500% compared to 2013. Despite these impressive numbers CNG still has a long way to go to overtake LPG as the most popular alternative fuel.
Next are the fully electric cars. 2,982 of these were sold which is a 14% increase compared to 2013. Electric cars are slowly gaining market share.
Other than these fuels not much is happening in the Netherlands. When the first public hydrogen station was opened it was already known that the Dutch government would leased two Hyundai ix35's. No other hydrogen vehicles were registered in 2014.
The sale of cars on ethanol has come to a near complete stop in 2014: only one was sold compared to 17 in 2013.
The largest vehicle category in the Netherlands in terms of sales remains the traditional gasoline car. 248,796 of these were sold in 2014. This is a drop of 6% compared to 2013. Traditional gasoline cars are slowly losing ground.
Diesel cars sales were better. 105,102 were sold in 2014, a growth of 1,5%.
The third category in the Netherlands in terms of sales is the hybrid vehicle (including plug-in hybrids and range extended electric vehicles). Compared to the top year 2013 sales decreased by 38% as a result of reduced fiscal stimulation. Despite this (as I wrote yesterday) the number of these vehicles on the road is still increasing.
Number four in the Netherlands in terms of cars on the road is LPG. Sales of LPG however are declining because the Dutch government no longer stimulates LPG despite verbally advocating its use. Sales dropped by 53% to 988. As a result the number of LPG vehicles on Dutch roads is decreasing. This is in sharp contrast to worldwide developments.
2014 was a great year for CNG / green gas vehicles. 3,232 CNG vehicles were sold, an increase of over 500% compared to 2013. Despite these impressive numbers CNG still has a long way to go to overtake LPG as the most popular alternative fuel.
Next are the fully electric cars. 2,982 of these were sold which is a 14% increase compared to 2013. Electric cars are slowly gaining market share.
Other than these fuels not much is happening in the Netherlands. When the first public hydrogen station was opened it was already known that the Dutch government would leased two Hyundai ix35's. No other hydrogen vehicles were registered in 2014.
The sale of cars on ethanol has come to a near complete stop in 2014: only one was sold compared to 17 in 2013.
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