Hyster, a US manufacturer of forklifts and materials-handling equipment, has agreed to provide 10 battery-powered terminal tractors to shipping company APM Terminals at its location in Port of Mobile, Alabama. The tractors are part of APM’s $60-million investment in port equipment electrification pilots, and are scheduled to be delivered this year. Each has a 182,000-pound… Read more »
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How to improve EV traction motor efficiency
A look at improving motor efficiency in two main categories: electrical and mechanical. Regular readers of Charged don’t need to be told that the typical EV drivetrain is way more efficient from battery to wheels than its ICE-based equivalent, but it is perhaps less well-known that the approximate drivetrain efficiency ranges from 75-90% for the… Read more »
Capacity Trucks unveils new battery-electric terminal truck
American truck maker Capacity Trucks, a subsidiary of REV Group, introduced its lithium-ion-powered terminal truck at the ACT Expo in Anaheim, California. The truck is designed for port, intermodal and distribution/warehouse use. It is equipped with a Hyster-Yale powertrain and either a 130 kWh or 260 kWh battery. It is expected to operate over a… Read more »
How to measure EV current and voltage in confined spaces
Sponsored by CSM For tests drives of electric vehicles, high-frequency currents and voltages must be measured in the high-voltage vehicle electrical system. The installation options for the necessary measurement equipment can be very limited due to confined installation spaces. This example shows how currents and voltages can nevertheless be measured with high sampling rates, HV-safe… Read more »
The ideal fluid control valve for EV thermal management
Sponsored by TLX Technologies The increasing demand for EVs are driving design teams to search out innovative fluid management solutions for EV thermal management applications. Unlike internal combustion engines, which have relatively simple cooling systems, EV cooling systems must be able to manage multiple heat sources and sinks, each with specific optimal operating temperatures and… Read more »
Wildcat develops new device to measure battery electrode thickness during cycling
Wildcat Discovery Technologies, a creator of high-throughput methods to rapidly design new battery materials, has developed a new Linear Displacement Measurement (LDM) Device that measures small thickness changes in pouch cells during cycling. Developed in partnership with BMW, Wildcat’s LDM capability allows new cell performance feedback as parts of projects with its collaboration partners. Measurements… Read more »
HBM’s torque transducer for high-speed applications testing
Measurement technology specialist Hottinger Baldwin Messtechnik (HBM) has announced that its T40MS torque transducer, intended for testing electric drives and transmissions, is now available as a cost-optimized solution. The T40MS is suitable for high-speed measurements up to 30,000 rpm. It covers the available nominal torques of 500 Nm, 1 kNm and 2 kNm in a… Read more »
Specialized motor materials and constructions (Part 1)
When demand drives innovation, the state of the art can progress quite rapidly, but if the demand is not there yet, the end result is often the proverbial “solution in search of a problem.” One of the most prominent examples of this is the lithium-ion battery, which was developed in the 1970s, but didn’t really… Read more »
EuroGroup’s new gluing technology promises to improve motor efficiency and reshape electric machine design
Groundbreaking glue: New results show as much as 44% core loss reductions for the same steel and lamination thickness. Many design decisions in the EV industry are still driven by range. Engineers remain focused on delivering system efficiency improvements, because it directly translates into delivering more range without increasing the size and cost of the… Read more »
A closer look at current sensors in EVs
Pretty much every electronic circuit that handles significant power utilizes some means of measuring current, whether to simply protect against overload or because it is a basic functional requirement. In this article we’ll cover some of the more common devices and circuit techniques for measuring current in the major subsystems of an EV, including when… Read more »