World First: DNV GL Awards Type Approval for LTO Batteries

Source: Echandia

Published Feb 26, 2020 8:04 PM by The Maritime Executive

Echandia is pleased to announce that it is the first company in the world to be awarded a DNV GL Type approval certificate for an LTO battery system. Echandia’s E-LTO energy storage system (ESS) is a smart, highly scalable air-cooled modular design system based on Toshiba LTO cells, widely considered the best heavy-duty cell chemistry on the market. 

The significance of DNV GL Type Approval

DNV GL is the world’s leading classification society for maritime battery systems. A DNV GL certificate gives shipyards, operators and insurers confidence that Echandia’s batteries meet DNV GL’s strict requirements.

Type tests conducted

DNV GL awards type approval to companies that can demonstrate that their solutions meet international standards, regulations and recognized DNV GL rules. Echandia conducted a series of tests to demonstrate compliance, including thermal runway propagation, internal/external short circuit, forced discharge, EMC, environmental tests, software functional tests and battery system performance tests.

Arguably the safest battery system on the market

LTO battery chemistry represents the safest maritime chemistry on the market. It is more resilient to external heat and other abuse, preventing thermal runaways. It does not form dendrite like other lithium-ion chemistries. A build-up of dendrite can cause a short circuit and decrease battery safety over time.

In the event of an internal short circuit, the cell chemistry goes through a phase shift, creating a current limiting function in the cell, reducing the short-circuit current and thereby any possible consequences.

Supreme Thermal Runaway Prevention

Unlike other Li-Ion batteries, LTO battery chemistry is so robust that thermal runaway in the cell is extremely unlikely, and propagation of thermal runaway between Toshiba cells is almost impossible.  Thus, E-LTO offers supreme passive prevention against thermal runaway propagation compared to other battery types. This result in a highly safe, controlled system that does not require any active measures like water cooling or fire suppression.

E-LTO at a glance

-Based on the safest battery chemistry (Lithium titanium oxide - LTO);

-The only LTO battery system in the world with DNV GL type approval;

-Engineered to be equal to or better than other Li-Ion-type batteries in terms of weight and volume for heavy-duty applications;

-Superior supercharging performance. High power charge/discharge capacity; and

-Long-term system stability and reliability - designed to last 10 years and beyond for heavy duty operational profiles, without affecting safety or performance.

The products and services herein described in this press release are not endorsed by The Maritime Executive.