Proterra and LG Chem co-developing battery cell for heavy-duty vehicles
Proterra and LG Chem announced the joint development of a battery cell that the companies say will be optimized to meet the performance and safety demands of the heavy-duty vehicle market. The cell chemistry is said to provide exceptional energy throughput capability, high charge rate acceptance, and industry-leading energy density. Proterra's new Burlingame battery production facility is currently ramping production to meet demand and can reportedly produce more than 500 MW·h of E2 battery packs on an annual basis.
"Between Proterra's demonstrated leadership in the heavy-duty electric vehicle industry, and the company's battery expertise, Proterra has been a strong partner for LG Chem to co-develop a battery cell with for this important market," said Youngsun Kim, LG Chem Vice President, Marketing. "It is our commitment to be at the leading edge of designing and manufacturing advanced batteries to meet the increasing global demand coming from the electric transportation sector."
Last year, Proterra introduced the Catalyst E2, a long-range electric transit bus designed to travel up to 350 mi (560 km) on a single charge. For this program, LG Chem has developed a battery cell to meet Proterra's standard in terms of performance and safety. The E2 battery packs have a pack-level energy density of 160 W·h/kg and 260 W·h/L. Made from lightweight ballistic-grade materials to withstand tough conditions, the standard E2 pack was designed from the ground up with an emphasis on safety, durability, and performance.
"Safety is paramount to our battery design philosophy," said Dustin Grace, Director of Battery Engineering at Proterra. "We have implemented redundant layers of passive and active safety features into the architecture of the battery in concert with the vehicle itself. Deploying energy storage systems of this scale has led us down a technology path to new and advanced safety features."
Proterra's ISO 26262 certified battery management system monitors cell temperature and voltage with more than 70 sensors capturing 160 different diagnostic data streams from each battery pack. E2 packs can interconnect in various series and parallel configurations for different second life and heavy-duty applications. Features such as liquid cooling and proprietary state-of-charge algorithms enable long life, rapid charge times, and operation in various climates. Onboard vehicle telemetry enables real-time monitoring and over-the-air updates to battery software so fleet operators can track battery performance and attain continuous product improvement.
To increase access to its battery-electric buses, Proterra has also introduced a battery-lease financing model that enables transit agencies to purchase electric buses at approximately the same price as fossil fuel-based alternatives.
"It is a pivotal time in the heavy-duty vehicle market as transit, delivery, and refuse services wake up to the combined benefits of electric propulsion," said Ryan Popple, Proterra CEO. "We are thrilled to be working with LG Chem to deliver best-in-class batteries to meet these unique market demands, and enable mass adoption of zero-emission battery-electric fleets."