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Hawaii study finds vehicle-to-grid discharge detrimental to EV batteries

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Results of a study by a team at the Hawaii Natural Energy Institute, SOEST, University of Hawaii at Manoa, suggest that the additional cycling to discharge vehicle batteries to the power grid in a vehicle-to-grid (V2G) scenario, even at constant power, is detrimental to EV battery cell performance. —Dubarry et al.

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US Hybrid awarded contract to deliver plug-in fuel cell shuttle bus to Hawaii County Mass Transit Agency

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California-based US Hybrid Corporation has been awarded a contract by the Hawaii Center for Advanced Transportation Technologies (HCATT) for the design, integration and delivery of its H 2 Ride Fuel Cell Plug-In Shuttle Bus for operation by the County of Hawaii Mass Transit Agency’s (MTA) HELE-ON Big Island bus service. Earlier post.).

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Better Place, Sheraton Waikiki and Hawaiian Electric Partner on EV Charge Network in Hawaii

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Better Place has started its initial deployment of EV infrastructure in Hawaii, with the launch of a project to incorporate its electric-vehicle infrastructure in Honolulu, in partnership with Kyo-ya Hotels & Resorts’ Sheraton Waikiki Resort and Hawaiian Electric Company. Other charging stations will be at three Hawaiian Electric sites.

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US and Japan collaborating on smart grid project in Hawaii; EV operation and charging, including grid-balancing services

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The project is supported by Japan’s New Energy and Industrial Technology Development Organization (NEDO), in cooperation with the State of Hawaii, Hawaiian Electric Company, Inc., Part of the demonstration plan includes utilization of the EVs for grid-balancing services ( earlier post ).

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Sandia Labs and HHC partner to design metal hydride hydrogen storage system for forklifts

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Adrian Narvaez of Hawaii Hydrogen Carriers (HHC) observes a metal hydride storage tank, part of a project led by Sandia National Laboratories. Plus, they no longer have to purchase battery rechargers or dedicate space for recharging. —Adrian Narvaez, Hawaii Hydrogen Carriers (HHC).

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USC team uses mixed conduction membranes to suppress polysulfide shuttle in Li-S batteries

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Addressing this polysulfide shuttle—which causes self-discharge, low charging efficiencies, and irreversible capacity losses—has been a major focus of research and development. C = Charge, D = Discharge. C = Charge, D = Discharge. Top: Schematic of the electrochemical processes in a generic lithium-sulfur battery.

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Ultrasonic welding in the battery pack for the Cadillac ELR

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Charging the ELR’s battery can be done with a 120V electrical outlet or a dedicated 240V charging station. The vehicle can be completely recharged in about 4.5 hours using a 240V outlet, depending on the outside temperature. The Cadillac ELR is built at GM’s Detroit-Hamtramck Assembly Plant.

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