Category: EV Technology

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World’s Fastest Charging Electric Bus Takes 10 seconds to Charge

The world's fastest charging electric busses, that takes just 10 seconds to be fully charged, were put into operation for the first time in Ningbo on Tuesday.

The bus operates a 11-km route with 24 stops in Ningbo, Zhejiang province, local transport authorities said.

In the next three years, a total of 1,200 such buses will be used for public transport in the city, where the electric bus plant is located.

The bus recharges while stationary or while passengers get on or off, and each charge enables the bus to run for least five kilometers, according to Zhou Qinghe, president of Zhuzhou Electric Locomotive, a subsidiary of high-speed train maker CRRC.

In addition, the bus, which rolled off production line in April, consumes 30 to 50 percent less energy than other electric vehicles.

The capacitor can be charged one million times and has a 10-year life cycle.

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BorgWarner to buy electric motor maker Remy for $950M

BorgWarner agreed to buy Remy for $951 million in cash, driving further consolidation of the auto-parts industry.

BorgWarner will pay $29.50 a share, a 44 percent premium from Remy’s closing price on Friday, according to a statement today. The price indicates an enterprise value of about $1.2 billion, BorgWarner said. The maker of turbochargers and transmission parts said the deal is set to close in the fourth quarter and should add to earnings in the first year because of purchasing efficiencies and other savings.

Demand for fuel-saving technology and global scale is pushing auto-parts makers to consolidate. In May, TRW Automotive Holdings Corp. was acquired by German auto supplier ZF Friedrichshafen AG for $12.4 billion.

“Our main focus has been organic growth, and that remains a prime path for us,” James Verrier, CEO of BorgWarner, said on a conference call. “But we’ve also been consistent about the need for M&A to add key technology to sustain that growth.”

The acquisition highlights the increasing importance of the electrification of the powertrain, which has not been a strength of BorgWarner’s, Verrier said.

BorgWarner rose 1 percent to $54.14 at 11:39 a.m. in New York, as Remy soared 42 percent to $29.18. This year through Friday, Remy had fallen 1.9 percent and BorgWarner had declined 2.4 percent.

Electric Powertrains

Buying Remy will add alternators, starters and hybrid motors, giving BorgWarner the ability to benefit as more powertrains blend electric power with traditional gasoline-fueled technology.

Some investors had been concerned that the move to hybrid engines would eventually cause BorgWarner to lose sales to automakers, Joseph Spak, an analyst with RBC Capital Markets, wrote in a research note today.

BorgWarner CFO Ron Hundzinski said he expects savings from the acquisition of at least $15 million annually within two years, in part by eliminating duplicate costs associated with a public company, and from lower purchasing expenses. He said he expects the Remy business to have profit margins in the mid-teens, similar to BorgWarner’s.

Former GM unit

Remy International, formerly known as Delco Remy, traces its roots to brothers Frank and Perry Remy, who developed magnetos, generators that used magnets to help start early automobiles. GM acquired Delco Remy in 1918 and spun it off in 1995. The name was changed to Remy International in 2004 and the Pendleton, Ind.-based company spent less than two months in bankruptcy in 2007.

Remy posted net income from continuing operations of $6.1 million last year on revenue of $1.2 billion. In 2013, it posted net income of $12.4 million on revenue of $1.1 billion.

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VW ‘close to battery breakthrough’ next-gen e-Golf to get 300km range

Volkswagen is closing in on a new battery technology that will bring “a quantum leap for the electric car”, according to the firm’s boss Martin Winterkorn.

Winterkorn told German tabloid newspaper Bild, "VW is researching a super-battery in Silicon Valley in California, that is cheaper, smaller and more powerful. An electric Volkswagen that can travel 300km (186 miles) on electricity is in sight. It will be a quantum leap for the electric car.”

As we reported back in December, VW acquired a 5% holding in QuantumScape, a San Jose-based early-stage battery startup that has been working on commercializing solid-state battery technology from Stanford University.

Volkswagen was due to decide in the first half of this year whether QuantumScape's battery technology is ready for use in its electric cars.

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Torque Vector Steering Improves Electric Vehicle Energy Efficiency

Germany's Karlsruhe Institute for Technology along with industry partner Schaeffler are researching improvements in electric vehicle energy efficiency by using brake steer or torque vector control of wheel motors to assist power steering.

The project "Intelligent Assisted Steering System with Optimum Energy Efficiency for Electric Vehicles (e²-Lenk)" subsidized by the Federal Ministry for Education and Research (BMBF) focuses on a new assisted steering concept. In conventional vehicles, the internal combustion engine not only accelerates the car but also supplies on-board assist systems with energy; such as the assisted steering system, which reduces the strain on the driver at the wheel.

In electric vehicles, this energy comes from the battery and also reduces the range as a result. In this research project by the collaborating partners, Karlsruhe Institute for Technology (KIT) and Schaeffler, the steering system is assisted in an energy-efficient manner by intelligent control of the drive torques transmitted to the individual wheels. The project is being sponsored by BMBF with a sum of around 0.6 million euros over 3 years and was started in January 2015.

"The new assisted steering system would require less system components in an electric vehicle, this would mean savings in terms of weight and energy in an electric vehicle", explain project managers Dr. Marcel Mayer, Schaeffler, and Dr. Michael Frey, KIT. "This would mean that an electric car would be cheaper and have a greater range." Materials and production steps can be saved due to the potential optimization of the design and weight.

The basic idea of the e²-Lenk project is simple: The wheels in an electric car will be driven individually by electric motors in contrast to a car with an internal combustion engine where all the wheels are provided with equal force. If the wheels on the left side transmit more drive torque to the road than those on the right side, this will result in acceleration of the vehicle to the right without the need to turn the front wheels or consume additional energy for steering.

Tracked vehicles or quadrocopters steer using the same principle. "Steering assistance can be provided while driving by means of an intelligent control system and suitable wheel suspension", says Schaeffler engineer Mayer, Manager of the Automatic Driving Working Group, which is carrying out research as part of the collaborative research project SHARE (Schaeffler Hub for Automotive Research in E-Mobility) at KIT. "Only steering when stationary remains a challenge with conventional designs."

"The assisted steering system is part of the drive train with our approach", explains Frey who is researching at KIT's Institute of Vehicle Systems Technology. Steering the front wheels is carried out without using additional energy. "We also want to significantly increase the quality of driving. Customer benefit, comfort, safety and reliability go hand in hand here."

As part of the project, functional demonstrators are being built, with which the concepts can be validated and optimized in experiments. It is also planned to implement the system in last year's Formula Student racing car KIT built by the university group KA-RaceIng with the participation of the students.

e²-Lenk is the first publicly subsidized joint project as part of the collaborative re-search project SHARE at KIT between Schaeffler Technologies AG & Co. KG and KIT. This joint project is being managed at KIT's East Campus in a joint project management office run by SHARE at KIT and the Institute of Vehicle Systems Technology (FAST).

Schaeffler and KIT are partners in the Leading Edge Cluster Electric Mobility South-West (ESW), which connects over 80 stakeholders from science and economics in the region Karlsruhe – Mannheim – Stuttgart – Ulm. The cluster strategy of the ESW cluster aims to achieve intensive regional collaboration in the field of electric mobility by means of new approaches and forms of cooperation. As a result, knowledge is developed, consolidated and ultimately advantages are achieved in international competition.

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Axial Flux Induction Motor for Hybrid and Electric Cars [VIDEO]

EV Powertrain start-up Evans Electric is rumoured to have been working on some interesting electric vehicle projects recently.

The team have developed a world-first copper rotor axial flux induction motor for automotive applications. The patent pending design has torque density on par with comparable axial air gap synchronous motors but without the expense of rare-earth permanent magnets.

Disc-shaped Axial flux motors are steadily making inroads into electric vehicle powertrains with Renault, Koenigsegg and Bugatti all looking to incorporate them into future models.

Evans Electric were also rumoured to have been hired by an OEM to help develop the architecture of a series hybrid powertrain based on in-board AFIMs with all-wheel-drive torque vectoring powered by a supercapacitor / li-ion battery energy storage system.

No news on which OEMs head these projects but they are believed to be EU headquartered.

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Carbon Fiber to Go Mainstream in Automobile by 2025

Driven by a faster-than-expected pace of technology development, carbon-fiber reinforced plastics (CFRPs) will be poised to gain widespread adoption for automotive lightweighting by 2025, according to Lux Research.

Already advances underway in fiber, resin and composite part production will lead to a $6 billion market for automotive CFRPs in 2020, more than double Lux's earlier projection. Even this figure is dwarfed by the full potential for CFRPs in automotive if they can become affordable enough for use in mainstream vehicles.

“Current trends strongly indicate significant mainstream automotive adoption of CFRPs in the mid-2020s, and companies throughout the value chain must position themselves to take advantage of the coming shifts. However, long-term megatrends towards urbanization, connectivity and automation suggest that there could be a limited time window beyond that for penetrating the automotive space,” said Anthony Vicari, Lux Research Associate and the lead author of the report titled, “Scaling Up Carbon Fiber: Roadmap to Automotive Adoption.”

“CFRP developers will have to continue the pace of innovation to overcome the high cost that has so far limited the material to less price-sensitive markets like aerospace and sporting goods,” he added.

Lux Research analysts reviewed the technology development in CFRPs, and evaluated its economics to consider its impact on the automotive sector. Among their findings:

  • Growing partnerships hasten development. The number of direct partnerships between carmakers or Tier-1 automotive suppliers and carbon fiber players has nearly doubled to 11 since 2012. Toray, with partnerships with Plasan Carbon Composites and Magna, has formed the most new relationships and is a major hub.

  • Patent uptick suggests mid-2020 adoption. Using a predictive tool, Lux Research identified a lag of about 18 years between uptick of patent activity and attainment of mainstream commercial adoption milestones. With another major upturn in CFRP patent activity occurring in 2007, large-scale mainstream automotive use is likely by the mid-2020s.

  • Other manufacturing costs need to be cut. Carbon fiber itself, at $28/kg for standard modulus fiber, represents just 22% of the cost of a final CFRP part. Additional advances are needed to reduce capital, labor, energy, resin and processing costs, which together make up the remaining 78%.

    Source: Lux Research

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    Toyota to Trial New SiC Power Semiconductor Technology [VIDEO]

    Using a "Camry" hybrid prototype and a fuel cell bus, Toyota Motor Corporation will bring a brand new technology to the streets of Japan for testing this year. The tests will evaluate the performance of silicon carbide (SiC) power semiconductors, which could lead to significant efficiency improvements in hybrids and other vehicles with electric powertrains.

    Technology

    Power semiconductors are found in power control units (PCUs), which are used to control motor drive power in hybrids and other vehicles with electric powertrains. PCUs play a crucial role in the use of electricity, supplying battery power to the motors during operation and recharging the battery using energy recovered during deceleration.

    At present, power semiconductors account for approximately 20 percent of a vehicle's total electrical losses, meaning that raising the efficiency of the power semiconductors is a promising way to increase powertrain efficiency.

    By comparison with existing silicon power semiconductors, the newly developed high quality silicon carbide (SiC) power semiconductors create less resistance when electricity flows through them. The technologies behind these SiC power semiconductors were developed jointly by Toyota, Denso Corporation, and Toyota Central R&D Labs., Inc. as part of the results of a broader R&D project* in Japan.

    Test vehicles and period

    In the Camry hybrid prototype, Toyota is installing SiC power semiconductors (transistors and diodes) in the PCU's internal voltage step-up converter and the inverter that controls the motor. Data gathered will include PCU voltage and current as well as driving speeds, driving patterns, and conditions such as outside temperature. By comparing this information with data from silicon semiconductors currently in use, Toyota will assess the improvement to efficiency achieved by the new SiC power semiconductors. Road testing of the Camry prototype will begin (primarily in Toyota City) in early February 2015, and will continue for about one year.

    Similarly, on January 9, 2015, Toyota began collecting operating data from a fuel cell bus currently in regular commercial operation in Toyota City. The bus features SiC diodes in the fuel cell voltage step-up converter, which is used to control the voltage of electricity from the fuel cell stack.

    Data from testing will be reflected in development, with the goal of putting the new SiC power semiconductors into practical use as soon as possible.

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    Carnegie Mellon Researchers Increase Lithium Air Battery Energy Capacity 5x

    Carnegie Mellon University's Venkat Viswanathan and a team of researchers have reduced the problem of sudden death in lithium air batteries through the addition of water, increasing energy storage capacity by five times.

    "We could not get all the energy out of these batteries because of sudden death," says Viswanathan, an assistant professor of Mechanical Engineering. "That was the ugly aspect of this battery."

    Lithium air batteries are an exciting research frontier because they could store at least twice as much energy as lithium ion batteries, which are currently the most common battery used in many consumer products, ranging from cell phones and laptops to electric vehicles. The potential of lithium air batteries lies in replacing one of the battery materials, the cathode, with air, making lithium air batteries lighter than lithium ion batteries. The lighter the battery, the more energy it can store. In addition, lithium air batteries have the possibility to increase safety.

    Viswanathan, IBM researchers Nagaphani B. Aetukuri, Jeannette M. García, and Leslie E. Krupp, University of California, Berkley Assistant Professor Bryan D. McCloskey and Alan C. Luntz of the SLAC National Accelerator Laboratory discovered that adding water to the battery decreases a phenomenon called sudden death, which reduces the battery's storage capacity. They published their results in Nature Chemistry.

    Sudden death causes lithium air batteries to die prematurely. The batteries require lithium, oxygen and an electron to move inside the battery to reach the active site where the reaction produces energy. As the battery operates, however, the lithium and oxygen form lithium peroxide films that produces a barrier and prevents electron movement to the active site, resulting in sudden death.

    Water selectively dissolves the lithium peroxide, and the dissolved lithium and oxygen move to a toroidal depository in the cathode, removing the barrier to electron movement, before reforming into lithium peroxide.

    "This allows for five times the capacity of the original case," says Aetukuri.

    While water is a temporary solution, it is eventually consumed and results in parasitic products that reduce battery efficiency. Viswanathan and McCloskey are currently searching for an additive other than water, which will result in increased battery capacity and efficiency. However, the addition of water is a large step forward in lithium air battery technology.

    "This additive opens up the opportunity to be able to reach a much higher energy density than a lithium ion battery, and once we perfect the design, we can compete with lithium ion batteries," says Viswanathan.

    To read the full Nature Chemistry paper, visit: http://www.nature.com/nchem/journal/vaop/ncurrent/full/nchem.2132.html

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    TU München develop torque vectoring transmission for electric vehicles

    A limiting factor for the driving range of electric vehicles is the amount of energy supplied by the batteries. To recoup as much braking energy as possible, engineers at the Gear Research Center (FZG) at the TU München have developed a light-weight torque vectoring transmission for electric vehicles.

    “While drive torque is normally distributed 50/50 to the wheels of the drive axle, our torque vectoring system doses the torque between the wheels as required,” explains engineer Philipp Gwinner from FZG. “This also ensures particularly good drive dynamics.” When a vehicle accelerates in a curve, greater torque is applied to the outside wheel. The car steers itself into the curve. The result: greater agility and, at the same time, safer road handling.

    Recovering braking energy in curves

    Even more important to the researchers, however, is the efficient recovery of braking energy. Normally, brakes convert kinetic energy into heat. So-called recuperation systems can prevent this. They work along the principle of a bicycle dynamo, which converts energy tapped from the wheel into electrical energy. In the case of electric vehicles this energy can be used to recharge the batteries, thereby extending the driving range.

    Unfortunately, in curves the recuperation of braking energy is limited since the inside wheel bears significantly less load than the outside wheel. The torque vectoring function adjusts the recuperation torque for both wheels individually. This increases vehicle stability while at the same time allowing more energy to be recovered.

    Less weight, lower cost

    Torque vectoring transmissions are used today in select top model cars and sports cars with combustion engines. Due to their high cost and additional weight torque vectoring transmissions have not found application in electric vehicles. The aim of the researchers was, thus, to optimize the transmission for small vehicles with electric drives.

    Instead of the standard bevel gears used in differential transmissions, the engineers developed a spur gear differential in which additional torque can be applied from outside via a superimposed planetary gearbox. Using a small (in comparison to the drive motor) electric torque vectoring machine they can generate a large yaw moment at any speed to achieve the desired road handling dynamics.

    The housing of the first prototypes are made of aluminum. To save even more weight, the aluminum housing will be replaced by a composite case made of aluminum and a fiber-reinforced synthetic. To reduce the forces acting on the housing without increasing gear noise, which is critical in electrical vehicles, the researchers have developed a special gearing free of axial forces. This and further construction element optimizations led to a reduction in gearbox weight of more than ten percent.

    “The elegant thing about the torque vectoring transmission we have developed is that it not only has a higher recuperation level, and, with that, an increased driving range,” says Professor Karsten Stahl, Director of the FZG, “the transmission also improves road handling dynamics, driving pleasure and safety. The continuously improving optimization measures leave us optimistic that in the near future both the weight and cost will be able to compete with today’s standard differential transmissions.”

    Participants in the Visio.M consortium are, in addition to the automotive companies BMW AG (lead manager) and Daimler AG, the Technische Universitaet Muenchen as a scientific partner, and Autoliv BV & Co. KG, the Federal Highway Research Institute (BAST), Continental Automotive GmbH, Finepower GmbH, Hyve AG, IAV GmbH, InnoZ GmbH, Intermap Technologies GmbH, LION Smart GmbH, Amtek Tekfor Holding GmbH, Siemens AG, Texas Instruments Germany GmbH and TÜV SÜD AG as industrial partners. The project is funded under the priority program "Key Technologies for Electric Mobility - STROM" of the Federal Ministry for Education and Research (BMBF) for a term of 2.5 years with a total budget of 10.8 million euro.

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    Ultra-Fast Charging battery can reach 70% in only 2 minutes

    Scientists at Nanyang Technology University (NTU) have developed ultra-fast charging batteries that can be recharged up to 70 per cent in only two minutes.

    The new generation batteries also have a long lifespan of over 20 years, more than 10 times compared to existing lithium-ion batteries.

    This breakthrough has a wide-ranging impact on all industries, especially for electric vehicles, where consumers are put off by the long recharge times and its limited battery life.

    With this new technology by NTU, drivers of electric vehicles could save tens of thousands on battery replacement costs and can recharge their cars in just a matter of minutes.

    Commonly used in mobile phones, tablets, and in electric vehicles, rechargeable lithium-ion batteries usually last about 500 recharge cycles. This is equivalent to two to three years of typical use, with each cycle taking about two hours for the battery to be fully charged.

    In the new NTU-developed battery, the traditional graphite used for the anode (negative pole) in lithium-ion batteries is replaced with a new gel material made from titanium dioxide.

    Titanium dioxide is an abundant, cheap and safe material found in soil. It is commonly used as a food additive or in sunscreen lotions to absorb harmful ultraviolet rays.

    Naturally found in spherical shape, the NTU team has found a way to transform the titanium dioxide into tiny nanotubes, which is a thousand times thinner than the diameter of a human hair. This speeds up the chemical reactions taking place in the new battery, allowing for superfast charging.

    Invented by Associate Professor Chen Xiaodong from NTU’s School of Materials Science and Engineering, the science behind the formation of the new titanium dioxide gel was published in the latest issue of Advanced Materials, a leading international scientific journal in materials science.

    Prof Chen and his team will be applying for a Proof-of-Concept grant to build a large-scale battery prototype. With the help of NTUitive, a wholly-owned subsidiary of NTU set up to support NTU start-ups, the patented technology has already attracted interest from the industry.

    The technology is currently being licensed by a company for eventual production. Prof Chen expects that the new generation of fast-charging batteries will hit the market in the next two years. It also has the potential to be a key solution in overcoming longstanding power issues related to electro-mobility.

    “Electric cars will be able to increase their range dramatically, with just five minutes of charging, which is on par with the time needed to pump petrol for current cars,” added Prof Chen.

    “Equally important, we can now drastically cut down the toxic waste generated by disposed batteries, since our batteries last ten times longer than the current generation of lithium-ion batteries.”

    The 10,000-cycle life of the new battery also mean that drivers of electric vehicles would save on the cost of battery replacements, which could cost over US$5,000 each.

    Easy to manufacture

    According to Frost & Sullivan, a leading growth-consulting firm, the global market of rechargeable lithium-ion batteries is projected to be worth US$23.4 billion in 2016.

    Lithium-ion batteries usually use additives to bind the electrodes to the anode, which affects the speed in which electrons and ions can transfer in and out of the batteries.

    However, Prof Chen’s new cross-linked titanium dioxide nanotube-based electrodes eliminates the need for these additives and can pack more energy into the same amount of space.

    Manufacturing this new nanotube gel is very easy. Titanium dioxide and sodium hydroxide are mixed together and stirred under a certain temperature so battery manufacturers will find it easy to integrate the new gel into their current production processes.

    Recognised as the next big thing by co-inventor of today’s lithium-ion batteries

    NTU professor Rachid Yazami, the co-inventor of the lithium-graphite anode 30 years ago that is used in today’s lithium-ion batteries, said Prof Chen’s invention is the next big leap in battery technology.

    “While the cost of lithium-ion batteries has been significantly reduced and its performance improved since Sony commercialised it in 1991, the market is fast expanding towards new applications in electric mobility and energy storage,” said Prof Yazami, who is not involved in Prof Chen’s research project.

    Last year, Prof Yazami was awarded the prestigious Draper Prize by The National Academy of Engineering for his ground-breaking work in developing the lithium-ion battery with three other scientists.

    “However, there is still room for improvement and one such key area is the power density – how much power can be stored in a certain amount of space – which directly relates to the fast charge ability. Ideally, the charge time for batteries in electric vehicles should be less than 15 minutes, which Prof Chen’s nanostructured anode has proven to do so.”

    Prof Yazami is now developing new types of batteries for electric vehicle applications at the Energy Research Institute at NTU (ERI@N).

    This battery research project took the team of four scientists three years to complete. It is funded by the National Research Foundation (NRF), Prime Minister's Office, Singapore, under its Campus for Research Excellence and Technological Enterprise (CREATE) Programme of Nanomaterials for Energy and Water Management.