Search Results Found For: "4r energy"

4R Energy earns first UL 1974 battery reuse certification

4R Energy, a joint venture between Nissan and Sumitomo that focuses on EV battery reuse, will be the first group certified to the UL 1974 Standard for Evaluation for Repurposing Batteries. UL 1974 outlines how to sort and grade EV battery packs, modules, and cells, identifying state-of-health and determining viability for second-life use as storage…. Read more »

Harvey Gulf orders Wärtsilä energy storage for four LNG-powered supply vessels

Wärtsilä, a provider of marine industry LNG solutions and services, will supply its Energy Storage System (ESS) to Louisiana-based Harvey Gulf, which will retrofit the system to four Harvey Energy-class LNG-fueled Platform Supply Vessels (PSVs). A fifth vessel in this class was previously fitted with a Wärtsilä ESS. When the upgrade project is completed, all… Read more »

LEAF batteries find a second life in automated guided vehicles

At Nissan’s Oppama plant near Tokyo, there are more than 700 automated guided vehicles, or AGVs, which deliver parts to workers in a car factory. Nissan, along with 4R Energy, is now repurposing used EV batteries, which no longer have enough capacity to provide sufficient EV range, to power its AGVs. The first-generation LEAF was… Read more »

Nissan starts LEAF battery exchange program in Japan

Starting in May, Japanese LEAF owners will be able to exchange their old batteries for refurbished ones. Nissan will initially offer 24 kWh refabricated batteries for ¥300,000 ($2,853) each. Prices for brand-new replacement batteries range from $6,182 for a 24 kWh battery to $7,800 for the 40 kWh version. Nissan is using the battery-rebuilding capabilities… Read more »

Nissan, GM and Toyota repurpose used EV batteries for stationary storage

Tesla may have made it trendy, but the California company is far from the only automaker exploring the commercial energy storage market, which is expected to grow from $200 million in 2012 to $19 billion in 2017, according to research firm IHS CERA. Nissan has joined forces with Green Charge Networks to deploy second-life EV… Read more »

Prototype power storage system in Japan uses EV batteries to regulate solar plant output

Sumitomo Corporation has developed and installed the first large-scale power storage system that uses used EV batteries. This prototype commercial-scale (600 kW, 400 kWh) storage system consists of sixteen used EV batteries. Located on Yume-shima Island, Osaka, the system begins operation this month. Over the next three years, Sumitomo will measure the facility’s smoothing effect… Read more »

A closer look at the losses in power semiconductors

A previous article examined loss mechanisms in traction motors, which tend to be the single biggest source of losses in a modern EV drivetrain. This time, the focus is on the various power semiconductors, as they are the next biggest source of losses. Also covered in brief are ways to mitigate these losses and design… Read more »