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Freudenberg introduces new conductive seals for electric motors

Freudenberg Sealing Technologies is introducing a new generation of electrically conductive seals at the virtual 2021 Vienna Motor Symposium. The seals are designed to prevent bearing damage caused by electrically-induced corrosion and to decrease electromagnetic interference. The power semiconductors in an inverter are often positioned directly above the motor. Silicon carbide semiconductors, which are often… Read more »

Ford Mustang Mach-E turns heads with its looks, closes the deal with practicality and price

Man, this car is an attention-getter! The Ford Mustang Mach-E has been drawing far more comments and questions from passers-by than any of the dozens of other plug-in vehicles I’ve evaluated, including the Porsche Taycan and several Teslas. As I’ve been driving it around town, at least a dozen people per day have asked me… Read more »

DELO offers thermally conductive battery adhesive for hybrid vehicles

Industrial adhesive manufacturer DELO has introduced a structural adhesive for batteries used in hybrid vehicles. Designed for high-volume series production, DELO-DUOPOX TC8686 is thermally conductive and flame-retardant. DELO says its new adhesive, which is currently being used by an automotive supplier in the ramp-up phase of production, is suitable for low-voltage batteries used in hybrid… Read more »

Specialized motor materials and constructions (Part 2)

The previous article in this two-part series looked at specialized materials that are (or will be) used in motors; the focus this time will be on the innovative methods of construction that make motors more suitable for EV traction applications. Separating the wheat from the chaff is especially important here, because hyperbole (and outright fantasy)… Read more »

Promising lithium-sulfur active battery material made with low-cost liquid phase process

Scientists at the Toyohashi University of Technology have made an active sulfur material and carbon nanofiber (CNF) composite using a low-cost liquid phase process. Their paper, published in the American Chemical Society’s ACS Applied Energy Materials, claims that all-solid-state lithium-sulfur batteries using a sulfur-CNF composite material show higher discharge capacity and better cycle stability than… Read more »

Are EV drivers really costing states gas tax revenue?

US states have been on an EV-taxing spree over the last couple of years. Many states have established or increased annual taxes on EV ownership—including supposedly EV-friendly states like Oregon and Washington. Proponents of the tax increases invariably argue that they’re needed to make up for a growing shortfall in gas tax revenues (in an… 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 »