Category: Battery Electric Car

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Chevrolet Bolt EV Ride Along [VIDEO]

Chevy hopes to achieve huge success with the Bolt. The EV has a $37,500 starting price before the $7,500 federal tax credit. The Bolt has a 200-mile rated range from an onboard 60 kWh battery pack. Those numbers put the Bolt squarely in the sights of people looking for a moderately priced electric car with a reasonable driving range. Much of the Tesla Model 3’s pre-order success has been attributed to those same factors.

The list of Bolt components supplied by LG defines the car’s performance and most of its user experience. LG is producing the electric drive motor, power inverter module, battery pack, battery heater, onboard charger, high-power distribution module, accessory power module, and power line communication module. The South Korean company is also making the electric climate control system compressor, the instrument cluster, and the infotainment system.

That full inventory of parts will be transported to Michigan where they will be used to make Bolts in GM’s Orion Charter Township assembly plant. With the LG parts on hand, full production starts in October. Finished Bolts will be rolling off car carriers onto dealership lots shortly after production starts.

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2023 BMW i8 to double power to 750hp + torque vectoring

As the EV technology arms race gathers pace, the second generation BMW i8 is rumored to boost power output from it's current 350 hp to a more Tesla like 750 hp.

Automobile reports that the next-generation i8 will ditch the current i8’s three-cylinder, range-extending internal combustion engine in favor of going all-electric with three high-revving (25,000rpm) electric motors producing a total of 750 hp and more potent batteries capable of delivering a 500 kilometre range. Also part of the package are four-wheel drive, four-wheel steering, torque vectoring, and an active suspension system that scans the road ahead.

While the front axle mounted electric motor in the current i8 revs to 11,400 rpm and is mated to a 2 speed GKN transmission, using high revving electric motors could potentially allow a single speed reduction gearbox yet still achieve terminal velocity on Autobahnen.

The rumored three electric motor powertrain would have BMW only catching up to the recently launched Acura NSX. The Honda has a three electric motor torque vectoring systems with dual motors up front and combined ICE/eMotor at the rear.

Back in 2012 Mercedes demonstrated the full potential of all-wheel-drive torque vectoring with their Mercedes SLS E-Cell. By the time the next gen i8 launches around 2022-2023, a full decade after the SLS E-Cell, we can only hope BMW's next generation EV sports car at least meets if not exceeds that benchmark.

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Audi reveal eROT energy harvesting ‘regen’ shock absorders

We have reported on a wide range of energy regenerative shock absorbers over the years that most often convert linear motion into electricity. Audi is working on a prototype called “eROT,” in which electric motors replace telescopic shock absorbers in the form of electromechanical rotary dampers.

The principle behind eROT is easily explained: “Every pothole, every bump, every curve induces kinetic energy in the car. Today’s dampers absorb this energy, which is lost in the form of heat,” said Dr.-Ing. Stefan Knirsch, Board Member for Technical Development at AUDI AG. “With the new electromechanical damper system in the 48-volt electrical system, we put this energy to use. It also presents us and our customers with entirely new possibilities for adjusting the suspension.”

The eROT system responds quickly and with minimal inertia. As an actively controlled suspension, it adapts ideally to irregularities in the road surface and the driver’s driving style. A damper characteristic that is virtually freely definable via software increases the functional scope. It eliminates the mutual dependence of the rebound and compression strokes that limits conventional hydraulic dampers. With eROT, Audi configures the compression stroke to be comfortably soft without compromising the taut damping of the rebound stroke. Another advantage of the new damper system is its geometry. The horizontally arranged electric motors in the rear axle area replace the upright telescopic shock absorbers, which allows for additional space in the luggage compartment.

The eROT system enables a second function besides the freely programmable damper characteristic: It can convert the kinetic energy during compression and rebound into electricity. To do this, a lever arm absorbs the motion of the wheel carrier. The lever arm transmits this force via a series of gears to an electric motor, which converts it into electricity. The recuperation output is 100 to 150 watts on average during testing on German roads – from 3 watts on a freshly paved freeway to 613 watts on a rough secondary road. Under customer driving conditions, this corresponds to a CO2 savings of up to three grams per kilometer (4.8 g/mi).

The new eROT technology is based on a high-output 48-volt electrical system. As currently configured, its lithium-ion battery offers an energy capacity of 0.5 kilowatt hours and peak output of 13 kilowatts. A DC converter connects the 48-volt electrical subsystem to the 12-volt primary electrical system, which includes a high-efficiency, enhanced output generator.

Initial test results for the eROT technology are promising, thus its use in future Audi production models is certainly plausible. A prerequisite for this is the 48-volt electrical system, which is a central component of Audi’s electrification strategy. In the next version planned for 2017, the 48-volt system will serve as the primary electrical system in a new Audi model and feed a high-performance mild hybrid drive. It will offer potential fuel savings of up to 0.7 liters per 100 kilometers.

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Driven | 2016 Toyota Prius

Toyota has been promising better handling with its cars, and it has delivered with the fourth-generation Prius. While it still does not look like a conventional car, the Prius now handles more like one.
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Samsung buys $450 million stake in Chinese electric car firm BYD

Samsung Electronics will pay $450 million for a stake in Chinese automaker and rechargeable batteries firm BYD Co Ltd, the Chinese company said in a stock exchange filing on Thursday.

Automakers and technology companies have formed a series of partnerships in recent years as the race to develop electric, self-driving, internet-connected vehicles has created demand for more electronics components and software.

The Samsung investment has been made through Chinese subsidiary Shanghai Samsung Semiconductor and gives the Korean firm a 1.92 percent stake in BYD, making it the ninth largest investor in the company.

Samsung Electronics said last week it was in talks to acquire a stake in BYD to boost its automotive chip business, after the Korea Economic Daily first reported that Samsung had agreed to buy a stake.

BYD, which also counts Warren Buffet's Berkshire Hathaway as a backer, began as a battery maker for personal electronics before launching its automotive business that focuses on electric and hybrid vehicles.

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Rimac Concept_One 0-100 km/h acceleration [VIDEO]

This is what 0-100 km/h in 2.6 seconds looks like.

The Concept One’s powertrain consists of four electric motors and four gearboxes with a total of 800 kW (1088 hp) and 1,600 Nm (1,180 ft-lb) distributed via torque vectoring.

The 620 volt, 82 kWh, LiNiMnCoO2 battery’s 1 MegaWatt of discharge capability linked to those four wheels moves the two-ton hypercar to 62.5 mph in just 2.6 seconds, to 124 mph in 6.2 seconds and to 186 mph in 14.2 seconds.

Top speed is rated at 221 mph.

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Atieva testing AWD powertrain in 900-hp Electric Van [VIDEO]

One of the four Chinese backed EV start-ups in Silicon Valley, Atieva was started by former executives from Tesla and Oracle in late 2007.

As Reuters reports, Atieva is headed by Bernard Tse, an ex-Tesla Vice President and board member, as well as Peter Rawlinson, the former chief engineer of the Tesla Model S. They don't have a factory yet, but they do have a van nicknamed Edna.

With its first car still at least two years away from production, Atieva is using a Mercedes-Benz Vito commercial van to test the drivetrain: a pair of high-output electric motors, a 87 kWh lithium-ion battery pack, inverters, gearboxes and dual motor controller.

Rawlinson, who while at Tesla led engineering of the Model S sedan, said Atieva's "secret sauce" is the software tying all that hardware together to deliver a combined 900 horsepower to the 2,200 kg all-wheel-drive van. With a dual motor powertrain the company is clearly not testing full-spec torque vectoring (which requires 4x motors).

The drivetrain propels the van from zero to 60 mph in just 3.1 seconds, a fraction slower than the fastest Tesla Model S. Atieva’s 0-60 acceleration target for its 2018 sedan is 2.7 seconds.

The Atieva sedan, being developed under the code name Project Cosmos, looks like a futuristic descendent of the Audi A7. Its headlamps are ultra-thin, with thousands of insect-inspired micro lenses. Its dashboard has a three-piece reconfigurable digital display that can be controlled by voice or touch.

Atieva has raised several hundred million dollars from investors including Mitsui & Co Ltd, the Japanese trading giant, and Venrock, a Silicon Valley venture capital firm connected with the Rockefeller family that once funded Intel and Apple. Two of Atieva’s biggest shareholders are Chinese: State-owned Beijing Auto and a subsidiary of publicly traded LeEco, an internet company that has also declared it intends to offer an electric car. LeEco is controlled by Chinese tech entrepreneur Jia Yueting.