Today on EV Engineering
Audi combines battery management and bidirectional charging
Audi has introduced bidirectional charging capabilities and an updated battery management system in its A2 e-tron electric vehicle (EV). The system combines vehicle-to-load (V2L) and vehicle-to-home (V2H) functionality with coordinated battery thermal management, charging electronics, and software-based energy control. Vehicle-to-grid (V2G) functionality is also planned for future implementation. The A2 e-tron is available with three…
LG Energy Solution develops rapid cell-level EV battery diagnostics
LG Energy Solution has developed Re.Pulse, a software-based diagnostic solution that evaluates the state of health (SoH) of electric vehicle (EV) batteries in under ten minutes. The system uses pulse-based measurements to assess battery condition during vehicle operation or after battery removal, providing data for maintenance, repair, and end-of-life decisions. Re.Pulse applies current pulses to…
Researchers use UWB signals to align wireless EV charging coils
Researchers at the University of Osaka, working with Tokai Rika and the University of California San Diego, have developed an ultra-wideband (UWB) positioning method to help align coils during wireless charging of electric vehicles (EVs). In laboratory tests using a scaled-down vehicle mockup, the method achieved median errors of 2.32 mm in position and 0.25°…
Terawatt adds 22 MW of EV fleet charging capacity across four US cities
Terawatt Infrastructure, a provider of charging infrastructure for autonomous and electric vehicle (EV) fleets, announced four charging depots in South San Francisco, Nashville, Miami, and Dallas. The sites have a combined charging capacity of approximately 22 MW and are designed to accommodate more than 3,000 vehicles per day, according to the company. Terawatt managed the…
New SiC trench MOSFETs address EV charging requirements
Nexperia has introduced a family of 750-V silicon carbide (SiC) trench MOSFETs designed for automotive and industrial power conversion applications. The devices combine low switching losses with temperature-stable on-resistance and are available in several package configurations, including TOLL surface-mount packaging. The MOSFETs are intended for applications including electric vehicle (EV) charging infrastructure, onboard chargers, dc-dc…
FAQs See More >
How are EV battery packs designed for repairability?Replacing a failed module in an electric vehicle (EV) battery pack is considerably more complex than simply lifting the lid.…
How has NACS evolved into the SAE J3400 EV charging standard?Editor’s note: This article was originally published in November 2023. It is updated here to reflect the publication of SAE…
How AI surrogate models can speed up EV battery cooling designCooling design has a direct effect on how an electric vehicle (EV) battery pack handles fast charging and high loads,…
How does impedance spectroscopy detect early EV battery degradation?A battery management system (BMS) normally judges cell health from terminal voltage, current, and temperature. From these readings, capacity fade…
How do 800-V EVs charge on 400-V dc fast chargers?A 400-V-class dc fast charger cannot directly charge an 800-V electric vehicle (EV) battery when its maximum output falls below…
How hydrogen fits into electric vehicle powertrainsHydrogen is increasingly appearing in heavy-duty vehicle electrification, particularly in applications where battery capacity and charging infrastructure present challenges. Although…
How do current-sensing errors propagate through EV motor control systems?Torque decisions in an electric vehicle (EV) traction drive often start from two or three-phase current readings, which leaves little…
EV Talk: Designing EV components with end of life in mindMaterial selection plays an important role in the performance of electric vehicle (EV) components, but engineers are increasingly being asked…
Mitigating high-frequency vibration in structural battery packsModern electric vehicle (EV) battery engineering revolves around removing layers of structure so more active cell material fits into the…
What causes bearing currents in EV motors and how engineers prevent themAn electric vehicle (EV) traction inverter can drive unwanted current through the motor bearings. Its switching creates voltage on the…
Probing considerations for double pulse testing SiC devices and modulesEditor’s note: Silicon carbide (SiC) power devices are widely used in electric vehicle (EV) traction inverters and other high-voltage power…
Five trends shaping conductive additives in batteriesConductive additives make up a small portion of a battery electrode, yet they play a significant role in cell performance.…
Batteries See More >
LG Energy Solution develops rapid cell-level EV battery diagnosticsLG Energy Solution has developed Re.Pulse, a software-based diagnostic solution that evaluates the state of health (SoH) of electric vehicle…
All-solid-state EV battery demonstrates 1,000 cycles at atmospheric pressureQuantumScape has introduced Osprey, an all-solid-state lithium-metal battery platform designed for automotive applications. The technology combines the company’s ceramic separator…
BMW and Lumissil demonstrate battery communication without dedicated wiringLumissil Microsystems and BMW Group have demonstrated power line communication (PLC) across BMW’s Gen6 800-V battery system, using existing electrical…
Battery evaluation kit combines DCIR and EIS measurementsDukosi has introduced a dc internal resistance (DCIR) and electrochemical impedance spectroscopy (EIS) evaluation kit for lithium-ion battery development, including…
New patent covers silicon-enhanced graphite manufacturing processFocus Graphite has received a Canadian patent covering its silicon-enhanced graphite anode materials and manufacturing process for lithium-ion batteries. Canadian…
LG Energy Solution expands cylindrical battery production for EVsLG Energy Solution has outlined plans to expand cylindrical battery manufacturing for electric vehicles (EVs), including the start of US…
Lithium-metal battery testing demonstrates fast charging at 3.6CBlue Solutions has released new fast-charging test results for its Gen4 lithium-metal battery technology, which is being developed for electric…
How does impedance spectroscopy detect early EV battery degradation?A battery management system (BMS) normally judges cell health from terminal voltage, current, and temperature. From these readings, capacity fade…
DOE unveils national battery strategy and manufacturing acceleratorThe US Department of Energy (DOE) has released a national battery strategy and launched the Battery Manufacturing Accelerator (BattMan) to…
High-voltage coolant heaters provide battery and cabin heating for EVsKLC Corporation (Taiwan King Lung Chin PTC Co., Ltd.), a Taiwan-based thermal management manufacturer, has highlighted its high-voltage coolant heaters…
Graphite One advances $80 million US battery anode facilityGraphite One Inc. has received the final air permit from the Ohio Environmental Protection Agency for the first phase of…
New failure criteria predict EV battery short-circuit risk after mechanical impactResearchers at Temple University have developed a method for predicting the probability of internal short circuits in lithium-ion batteries following…
Componentry See More >
New SiC trench MOSFETs address EV charging requirements
Nexperia has introduced a family of 750-V silicon carbide (SiC) trench MOSFETs designed for automotive and industrial power conversion applications. The devices combine low switching losses with temperature-stable on-resistance and are available in several package configurations, including TOLL surface-mount packaging. The MOSFETs are intended for applications including electric vehicle (EV) charging infrastructure, onboard chargers, dc-dc…
Technology News See More >
WeaveGrid, Hyundai, and Kia develop smart charging and V2G capabilities
WeaveGrid and Hyundai Motor Group have announced a partnership to develop smart charging and vehicle-to-grid (V2G) capabilities for Hyundai and Kia electric vehicles (EVs) in North America. The collaboration will initially focus on managed charging, also known as V1G, before expanding into bidirectional energy services. The companies are developing a software platform that connects Hyundai…
