Materials

Deep Insight

Skateboard platforms

Against the backdrop of a boom in skateboard platforms for EV designs, Nick Flaherty looks at the approaches taken by some of their suppliers. Changing the wheelbase of a traditional car or truck design by 6 or 7 in creates a ripple effect whereby half the transmission shaft has to be redesigned, changing the centre of gravity and the requirements for the suspension. That means a whole new vehicle design is needed...

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Battery Safety

The EV battery industry offers a variety of ways to minimise the hazards they can pose, as Peter Donaldson explains. Proximity to large amounts of energy has always presented hazards, but people have mostly learned to live with them and enjoy its benefits. However, being close to a high-energy electrochemical system such as a 100 kWh battery is still...

Digest

Riversimple Rasa

Rather than go all-out on the technology, this EV has been conceived with reusable components – and the circular economy – in mind. Rory Jackson reports. End-to-end sustainability is a troublesome target for EV engineers to track. Reducing vehicle emissions at the point of use is easy enough, but reducing the emissions...

Deep Insight

Wireless Charging

With agreement on an SAE standard for wireless charging systems set to herald their wider roll-out, Nick Flaherty reports on developments in the technology. The technology for wireless charging of e-mobility systems has reached a critical point. With the SAE J2954 standard now agreed for consumer EVs...

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Condition monitoring

Peter Donaldson examines the factors involved in keeping tabs on the health and performance of key EV components. While an EV’s most costly component is its battery, there are also many other subsystems – inverters, generators and so on – whose condition is critical to safety and efficiency. Machinery health and usage monitoring is well-established...

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Battery Cooling

As liquid-based cooling for EV batteries becomes the technology of choice, Peter Donaldson explains the system options now available. Although there are other options for cooling EV batteries than using a liquid, it is rapidly taking over from forced-air cooling, as energy and power densities increase. It is emerging as the dominant technology...

PS

Battery reuse and recycling

As awareness grows of the environmental problems associated with several types of lithium mining and extraction, it is becoming obvious that the eco-friendly shine on EVs could soon become tarnished unless those processes are cleaned up and a circular economy for lithium-ion batteries and the materials in them can be established (writes Peter Donaldson). A circular economy means reusing...

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Battery Materials

Nick Flaherty reports on how recent advances in materials are leading to EV batteries with ever-growing energy densities. Battery systems for e-mobility platforms are based largely around lithium chemistry. Liquid lithium salts with graphite anodes and composite metal cathodes are the dominant combination for battery cells...

Dossier

BB Green ferry

Rory Jackson looks at the development of this battery-powered ferry, which is aimed at shuttling workers to and from work. As more and more people find work in the major urban centres of the world, traffic congestion continues to worsen. While road networks struggle to cope with an ever-growing number of commuters, levels of driver stress and greenhouse gas...

Dossier

Elaphe L1500 in-wheel motor

The L1500 has been designed to enable it to be used in a wide range of OEM EVs and HEVs. Rory Jackson reports on how it was developed. Slovenian company Elaphe is known in the e-mobility industry for its in-wheel propulsion technology, which is used in a range of automotive applications around the...

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