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Repurposing Tesla S batteries

EMUS is rolling out a battery management system (BMS) specifically to reuse battery packs from the Tesla Model S (writes Nick Flaherty). The Tesla’s 24 V DC packs have a rated capacity of 5.3 kWh, and consist of six modules. The key is that the cells in each module can end up with different performance characteristics...

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Solar charging’s looking up

Hyundai has developed a roof-mounted solar charging system that connects directly to the powertrain of an electric vehicle (writes Nick Flaherty). Previous roof implementations have used the energy generated to power ancillary equipment such as entertainment systems or...

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Inverter designs gain traction

ON Semiconductor has launched a family of power modules and two reference designs aimed at high-voltage automotive traction inverters (writes Nick Flaherty). The first two VE-Trac modules are intended for main traction inverters of all types of electrically powered vehicles including battery-electric vehicles, plugin hybrids and full hybrids. There are two inverter design platforms for...

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Snow problem for torque software

Porsche Engineering has developed a torque control system for EVs that provides stability in environments such as snow without the need for additional sensors (writes Nick Flaherty). An electric all-wheel-drive vehicle with multiple motors has a key advantage in allowing variable distribution of the drive power every millisecond. This compares to a conventional all-wheel-drive vehicle, where the power is...

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Gearbox offers e-drive options

Drexler Automotive has developed a modular multi-speed gearbox for EVs (writes Nick Flaherty). Working with German design house Sala Drive, the gearbox has up to 922 Nm input torque, up to 580 kW input power and optional single or dual e-motor drives on the same axle. There is also a move to two-speed transmission powertrains to increase the...

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‘Full stack’ monitoring system

Fleetonomy has developed an end-to end fleet management system for EVs that includes system data (writes Nick Flaherty). The ‘full stack’ system is based in the cloud and manages the performance and operation of fleets of electric cars. It is currently being used in a project in London called HAVN with a fleet of...

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Interface for standard EV chargers

Delta-Q Technologies has launched a standards-based vehicle charge interface module (VCIM) for AC charging stations (writes Nick Flaherty). The hardware works with Delta-Q’s recently released stackable charging system (SCS) to include compatibility with standard EV supply equipment (EVSE). The module manages the AC current limits in the EVSE and communicates that data to the ‘master’ charger of the...

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E-bike from Nepal uses Ion cloud

Battery management technology developer Ion Energy is working with Yatri Motorcycles in Nepal on an electric motorbike design (writes Nick Flaherty). The bike, called Project Zero, is built from carbon fibre and uses a 30 kW motor running off a 6 kWh lithium-ion battery pack that provides a range of 230 km (150 miles) from...

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Schottky diodes start to motor

Schottky barrier diodes (SBDs) operating at 200 V and with low leakage current are being increasingly used for hybrid and full electric powertrains and inverters (writes Nick Flaherty). There is currently a strong effort towards mechanical integration in 48 V hybrid drive systems, by combining the motor and peripheral circuits...

Grid

Fifth-gen cell voltage monitors

Smart Test Solutions has launched its fifth generation of cell voltage monitoring (CVM) systems for fuel cells, batteries and electrolysis for hydrogen generation (writes Nick Flaherty). This latest version has an extended temperature range of up to 105 C, up from the previous 85 C. The power supply range has also been extended. Instead of using a 5 V supply...
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