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Friction brakes will always be needed, and if they are there, it doesn't make much sense if you use them ~10% of the time (only battery) or only 2% of the time (supercap). A battery in a EV in the near future will be capable of absorbing 100+ kW, that basicly covers all normal driving scenarios for braking, the problem with regen braking is that you have diferential, it will slip. If you wan't to go with bigger regen power then you absolutly need 4 motors and control them individually, like the ABS is doing it today with friction brakes.
Supercaps would be great in other aplications, but I don't see a good use case in EVs.
New carbon material sets energy-storage record likely to advance supercapacitors
Researchers at the Department of Energy’s Oak Ridge National Laboratory (ORNL) have used machine learning to design a carbonaceous supercapacitor material that stores four times more energy than the best commercial material. A supercapacitor made with the new material could store more energy—imp...
Why no plug-in FCEV? Two main reasons:
- Hydrogen leaks out of the tank, so doing majority of km on Battery, you will be loosing hydrogen even if you don't use it.
- Infrastructure - the one reason to go plug-in is to have a quick fill up on longer journey. The hydrogen filling stations are next to non-existant and I don't see this changing in next 10-20 years. Those stations may become more available for heavier commercial vehicles on strategic places, but you will struggle to find hydrogen station in some small town in the middle of nowhere even 20 years from now.
Advanced Propulsion Centre UK publishes automotive power electronics value chain
The Advanced Propulsion Centre (APC) UK, with experts and stakeholders from industry, academia and funding and support bodies, has published an updated power electronics value chain which shows an end-to-end supply chain view of materials and components required for volume manufacturing of auto...
Toyota will do what it can with their limited battery supply not jeopardizing their 10 million units sold per year.
Their take is that it's more beneficial use of battery to make ~50 HEVs instead of one BEV. Slowly when supply chain catches up, they will up their game on the BEV side. I admit this is disappointing from the potential EV customer side of view, but you got to understand the capitalist point of view from Toyota :)
Toyota starts production of 5th-generation hybrid powertrain in Europe for new Corolla
Toyota Motor Europe (TME) has started production of its 5th-generation hybrid powertrains for the new Corolla. The latest Toyota hybrid electric low-emission powertrains will be made at Toyota Motor Manufacturing Poland (TMMP) and Toyota Motor Manufacturing UK (TMUK) for the new Corollas manufa...
I wonder what the range is, they only say it was extended by 30%, but compared to what? Adding hydrogen tanks to a normal ICE platform is probably hard (small tank?), then you have efficiency of combustion of a racing 1.5 turbo engine. If this thing gets more than 200 km range, then kudos to Toyota.
Toyota developing prototype hydrogen combustion engine Corolla Cross H2 Concept road car
Toyota engineers have created a prototype hydrogen engine road car—the Corolla Cross H2 Concept. By equipping the 1.6l 3-cylinder turbo engine from the GR Corolla with high-pressure hydrogen direct injection engine technology from motorsport activity, and adding the hydrogen tank packaging know...
The battery is not there for the capacity, but for the power. This small battery must be capable of delivering 20C discharge and regen. Or it must provide around 20 kW of power. All this in a package of around 40 kg. No way you can package 20kWh LFP battery that can do 20 kW in the same space and at the same weight. Also note that weight defines the material used and directly affects cost.
To summarise, the Corolla is a econo box ICE car that uses as little raw materials as possible and saves at least 20% fossil fuel use compared to conventional ICE. Nothing more nothing less.
Toyota boosts 2023 Corolla Hybrid; starting MSRP $1,250 lower than 2022 Corolla Hybrid
The Toyota Corolla Hybrid enters the 2023 model year as a thoroughly upgraded model. The 2023 Corolla Hybrid now offers a choice of five model grades versus just one before. Debuting a more powerful hybrid system and available Electronic On-Demand All-Wheel Drive, the 2023 Corolla Hybrid also g...
@Engineer-Poet, come on, any combustible gas mixed with air and a spark will ignite, so what? Hydrogen is contained in hydrogen tank, no real danger. If there is a leak it will leak up in the air, if this is inside building it will be trapped in the ceeling. That is what happend in Fukushima.
Process of producing hydrogen with electrolysis was at 60-80% efficiency, so this 97% could be a game changer, with fuel cell (eg. Toyota) 60% efficiency, the round trip efficiency is above 50% + waste heat from fuel cell, can be used for home heating. This good seasonal solution, for three winter months, where there is little to no solar energy.
Researchers find capillary-fed electrolysis cell can deliver hydrogen at 98% cell energy efficiency
In an open access paper published in Nature Communications, researchers from the University of Wollongong in Australia report that their capillary-fed electrolysis cell demonstrates water electrolysis performance exceeding commercial electrolysis cells, with a cell voltage at 0.5 A cm−2 and 85 °...
@mahonj, the obvious answer is the price of electricity will control when this will operate. The price of electricity when there is no excess renuvables will get higher and higer. But I too, would like to know if this project is ment to work this way.
Siemens Energy secures 50 MW electrolyzer order from European Energy for first large-scale eMethanol project
European Energy, a Danish developer and operator of green energy projects, has ordered a 50 MW electrolyzer from Siemens Energy for use in developing the first large-scale commercial e-Methanol production facility. The plan is that the plant will be built in Kassø, located west of Aabenraa in...
There certanly is shortage of dead battery waste when you consider NV Will produce hundrets of GWh of new batteries every year. Where Will they get 100,000+ tons of dead batteries to get 50% recycled lithium?
Galp and Northvolt establish JV for lithium conversion plant in Portugal; initial annual capacity of 35,000 tons of lithium hydroxide
Portugal-based energy company Galp and Sweden-based battery manufacturer Northvolt have agreed to set up a joint company, Aurora, that aims to become a steppingstone for the development of an integrated lithium-battery value-chain aligned with Portuguese and European ambitions. With the main ...
This is disappointing, It's like a mild hybrid thing, one MG between the transmission. They obviously went the cheap route, not sure it will pay out. What they should have done is ditch the mechanical 4x4 and make it independent with electric motors, maybe even each rear motor for each wheel. I know this means more cost (not just the motors but also power electronics) but the benefit would be much greater.
Toyota introduces 2022 Toyota Tundra pickup with new i-FORCE MAX hybrid option
Toyota has introduced the new third-generation Tundra full-size pickup with two different powertrain configurations. The new, base twin-turbo 3.5-liter V6 engine produces up to 389 horsepower and 479 lb-ft (649 N·m) of torque. When paired with the new i-FORCE MAX system, the result is a combined...
30% is not just electric efficiency, but overall vehicle efficiency. That is easier, start with an SUV and then improve with Prius type shape :)
Toyota will invest $14.3B in development of a battery supply system and research and development by 2030
In a livestreamed briefing on batteries and carbon neutrality, Toyota Chief Technology Officer Masahiko Maeda said that the company will invest ¥1.5 trillion (US$14.3 billion) in the development of a battery supply system and research and development by 2030. Toyota currently assumes it will go...
The industry uses what works for them, Why does Toyota still use NiMh in their hybrids? Because it works for the target application. Current Giga factories that are in the pipeline will use graphite, that is just fact. Over time they may use less graphite per kWh with adding silicon (Tesla plan). Solid state won't ramp up as quickly as people think, just look at the QS presentation, 90 GWh by the 2029, World will be at 4+ TWh by then, predominantly on graphite anode. Installed capacities will then produce this "old school" cells for at least 10 more years, just because they will be cheap to make and good enough for target applications.
US designates Graphite One Project as “High-Priority Infrastructure Project”
Canada-based Graphite One Inc. announced that it received notice on 15 January 2021 that its Alaska-based Graphite Creek Project has been designated a High-Priority Infrastructure Project (HPIP) by the US Government’s Federal Permitting Improvement Steering Committee (FPISC). The approval is the...
They will have to speed up this things, they are moving like 10 mph :)
Toyota shows e-Palette geared towards practical MaaS applications
Toyota Motor Corporation is introducing an operations management system to support the providing of services that will enable practical use of the e-Palette, a battery-electric vehicle for autonomous mobility as a service (Autono-MaaS) applications. In collaboration with a range of partners, it...
I think it will be a lot slower than anyone thinks. When they come out with mass production in 2027 they won't be so far away in energy density to competitors, especially when you account the battery pack level density including structural rigidity. But that said they probably have much more margin for improvement from that point, but they will need another ~5 years to master that. This means that for at least 15 years current Li-ion tech will still be the dominant production capacity.
QuantumScape releases performance data for its solid-state battery technology
QuantumScape Corporation, a Volkswagen Group-backed developer of next-generation solid-state lithium-metal batteries for use in electric vehicles (EVs), released performance data demonstrating that its technology addresses fundamental issues holding back widespread adoption of high-energy densit...
Nice to see Avancements in LFP, but there is no cycle life data, and that graph shows big voltage drop in the middle of SOC (from 4V to 3.5V). What does that mean when you have more cells in the battery pack? Does this complicate BMS or is this maybe a complete deal breaker? Anyone knows this?
VSPC boosts energy density of LFP cells up to 25% by incorporating manganese; LMFP
Lithium Australia subsidiary VSPC reports significant progress towards improving the energy density of LFP (lithium ferro phosphate) Li-ion battery cells by adjusting its proprietary manufacturing processes to incorporate manganese into the cathode active material during production. The additio...
Silicon specific capacity is 10x more than graphite. You roughly need 30,000 t of graphite anode for 30 Gwh, but you only need 3,000 t of silicon anode for the same capacity.
If this is 40% or not is probably dependant on the cathode, a higher energy density cathode would see a boost of 40%, but something like LFP would benefit less, but still probably around 20%.
As far as I understand the problem with anode material is that there is a long evaluation process, so this may take a while until it's used in EVs.
E-magy looking to scale nano-porous silicon production for next-generation Li-ion batteries
E-magy, a Dutch cleantech scale-up, has developed a technology platform for nanoporous silicon that can significantly boost the performance of next-generation lithium-ion batteries for electric vehicles (EVs). E-magy’s low-cost process manufactures structured silicon particles with nano-scale ...
This type of shifting is only possible with electric motor, because it must cooperate and change load instantly without driver noticing it. I thing Renault is doing something similar with their hybrid without a clutch. No matter how instant the shift is, it means that motor must suddenly change rpm and that the motor is the integral part of transmission, you can't just bolt this thing to an EV and expect it to work.
Inmotive introduces efficient two-speed transmission for EVs
Inmotive, a Canadian-based automotive supplier, has launched its patented Ingear two-speed transmission. Invented and designed for the next generation of electric vehicles, the Ingear features a simple and durable design that enables a more efficient powertrain, with extended range, at lower co...
I don't know what went wrong here but either this was not a good Hypermiling effort or ID.3 is just not an efficient EV.
Hypermiling Kona EV resulted in consumption of just 6.3 kWh/100 km (1026 km), and Model 3 someone managed to do 7 kWh/100 km (975 km).
Hypermiling Volkswagen ID.3 makes 531 km journey on a single charge
The new Volkswagen ID.3 has set its first range record—the electric car covered the 531 kilometers (330 miles) from Zwickau to Schaffhausen (Switzerland) on a single charge. Officially, the model has a range of up to 420 kilometers (261 miles) (WLTP). This mark was topped by more than 100 kilom...
Did I miss something here, or is there really no AWD option???
BMW introduces iX3 electric SUV; destined for China and Europe
BMW unveiled the iX3 electric SUV (earlier post), offering full electric mobility in a BMW X model. Electric power consumption combined in the WLTP test cycle is 19.5 – 18.5 kWh/100 km. The operating range is up to 460 kilometers (285 miles) in the statutory new WLTP test cycle (up to 520 kilome...
30 miles of range with a 24 kWh battery??? What is the MPG when on gas engine alone? I think it's better not to know.
BMW launches Gen2 X5 PHEV in US: X5 xDrive45e
BMW has launched the second-generation plug-in hybrid X5 Sports Activity Vehicle, the X5 xDrive45e, in the US. (Earlier post.) The US X5 xDrive45e arrives with a SULEV Super ultra-low emissions vehicle rating which can bring additional benefits in states which offer special consideration to dri...
warranty is not equal to expected life, this two things may be far apart. Every EV should be designed so that battery outlast the car, just use it as energy storage when the car is not in use anymore.
Silica-based cathode enables long-life Li-S batteries
Scientists from the Daegu Gyeongbuk Institute of Science and Technology, Korea, have developed a novel silica-based cathode for lithium–sulfur batteries, thereby enabling the realization of batteries that can last for more than 2,000 charge/discharge cycles. The possibility of successfully usi...
The key thing is:
"Silica, one of the most abundant metal oxides, is low-cost, easy to process..."
Sulfur is also a low cost element
2.000 cycles is a good achievement
I don't even care about energy density at this point, just give us cheaper batteries that last.
Silica-based cathode enables long-life Li-S batteries
Scientists from the Daegu Gyeongbuk Institute of Science and Technology, Korea, have developed a novel silica-based cathode for lithium–sulfur batteries, thereby enabling the realization of batteries that can last for more than 2,000 charge/discharge cycles. The possibility of successfully usi...
I think there is to much obsession with higher energy density, meanwhile existing technology is still incrementing slowly in energy density, but more importantly it's also surpassing 2000 cycle life and getting to 4000 cycles.
What is more beneficial? Battery that will last 15 years in a car and then also have second life in storage for additional 15 years. Or super high energy density battery that will last "only" 10 years in an EV or 1000 cycles as stated in this article? And still currently this Technology is at 350 cycles, there is still long path to get to 1000.
Battery500 project has achieved 350 Wh/kg and more than 350 cycles
EV battery costs have declined significantly over the past ten years, from more than $1,000 per kilowatt-hour (kWh) to less than $200/kWh. Increasing cell energy is one way to decrease cost even further, as a higher specific energy value will result in fewer materials needed for the same total ...
Measuring PM is a difficult task, because a measurement alone doesn't tell us what this particles are. I heard that near the sea those measurements are increased because of salt in the air and salt is actually beneficial for respiratory system.
This study is about diesel PM only and depending on your location this can be or it may not be a major component of air pollution. By the busy road in Europe where many cars are run on diesel not to mention trucks this sure is a big concern.
UCLA study shows how air pollution can lead to damage to brain cells; zebrafish and Parkinson’s
A new UCLA study in zebrafish identified the process by which air pollution can damage brain cells, potentially contributing to Parkinson’s disease. Published in the journal Toxicological Sciences, the findings show that chemicals in diesel exhaust can trigger the toxic buildup of a protein in ...
What am I saying? It's all about cost, making "normal" power EV go faster than 180 kph just means more cost or maybe even know-how, why bother when you already limited the whole range of models including ICE to 180 kph.
Official Volvo argument is safety, but I think it's not the only reason :)
Every Volvo model now comes with a 180 km/h speed limit and Care Key
Every new Volvo car now comes with a limited top speed of 180 km/h (112 mph), as Volvo Cars delivers on its promise made last year to introduce such a limitation and goes beyond regulation and legislation to help close the remaining gap to zero serious injuries and fatalities in traffic. Apar...
I think this is just preparing the field for EVs. If you have EV it's somewhat hard to make it go faster than 180 kmh, so why bother since every Volvo is already limited to 180 kmh ;)
Every Volvo model now comes with a 180 km/h speed limit and Care Key
Every new Volvo car now comes with a limited top speed of 180 km/h (112 mph), as Volvo Cars delivers on its promise made last year to introduce such a limitation and goes beyond regulation and legislation to help close the remaining gap to zero serious injuries and fatalities in traffic. Apar...
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