ESTechnologies has designed the first 
Lithium-Polymer battery with Lloyds Certificate in the world. This battery is
specially designed and certified for Marine applications and large Energy
storage systems in the most harsh environment.
Energy storage
With a Lithium Polymer Battery
you can create energy storage in a cost effective manner, reducing fuel and
therefore making  a contribution to a better environment. Reduction of CO2
emissions, and energy which normally gets lost, will now be saved and stored by
means of optimized power management.


This makes the use of  energy more efficiently. This is due to the special
qualities of the lithium polymer cells. Firstly, the chemical composition of the
battery, using non corrosive chemicals which guarantees long lifetime and little
wear.


Secondly, the use of polymer technology allows to make batteries with
extremely high efficiency and low impedance(lowest on the market).


The polymer technology and the chemical composition makes it possible to
realize an extremely high number of charge / discharge cycles, over 5000 cycles,
with a long lifetime.


With these cells ESTechnologies produces high voltage and high power battery
systems. For this purpose, 51.8 Vdc battery blocks have been developed with a
capacity of 100Ah or 200Ah.


The battery blocks are built with only 14 large single cells instead of
(most common), hundreds of small cells. This contributes to the already high
reliability of the battery systems.


Battery Management System
To guarantee the
extensive lifetime of this battery, ESTechnologies has also designed a unique
Battery Management System with constantly active balancing. Unlike any other
system available on the market today, this Battery Management System has superb
specifications. It can balance energy between cells within one battery unit and
even between cells of different battery units connected in one system. This is
all achieved with minimal losses. Special care has been taken to ensure safety
at all times. High DC voltage is present at large energy storage systems and
additional safety measures are built into the battery module itself.


The batteries communicate with other modules and system controllers like
NMEA2000 devices. The 50V battery modules are constructed for durability with
just 14 large LiPo cells in series and a reduced amount of parts.


Each cell has its own chemical process. Therefore a balanced system is
needed. EST uses an in-house developed, state of the art, active balancing and 
monitoring board for each module. If there is an imbalance in the system, a part
of the energy will be transported from the highest cell  to the lowest cell.
Result: The EST modules are always 100% balanced.


The required voltage is realized by connecting batteries in series, the
required power can be obtained by connection these battery series  in parallel.
ESTechnologies is responsible for the complete supply and installation of the
complete system including battery, total battery management and safety
features.


Because of working with a high DC voltage, safety has top priority and is
included in the overall design philosophy. The housing and connectors are fully
protected and have IP65 rating.


Further Development
ESTechnologies is still
improving their batteries and have now made a very important step forward. They
have found positive improvements regarding the weight of the
batteries.
ESTechnologies has succeeded to reduce the weight of their
batteries with 12% from 85 kg to 75 kg.  This by using a new cell which is
lighter and by improving the mounting frame on the inside.


Other Specifications of ESTechnologies batteries
are:


• Lloyd’s Certified with Lloyd’s Certified power connections
• Certified
for high DC voltage systems
• Have a charge and discharge efficiency of more
than 95%
• Configurable for Mega-Watt applications
• Very light weighted
and ultra-compact in size
• Designed for large energy storage systems
•
Maintenance free
• Environmental friendly (100% recyclable)
• 10 years
limited warranty

Analytic Systems has announced that it has responded to its commercial marine reseller network in North America and started the process of certifying their marine specific power conversion products.

The first models to be certified to ABS standards are the new BCA1505 (1500W AC charger); the BCA310 (300W AC charger); the IPS300 (300W DC/AC Puresine inverter) and the VTC315 (Isolated DC/DC voltage converter). In addition a new line of cost reduced Intelligent AC battery chargers, cost reduced power supplies and inverters will also be highlighted.

Analytic Systems is looking to bring on new Commercial Marine customers/resellers with these newly certified products and their new lower pricing based on its 2011 cost reduction program. This will prove to be an attractive package as Analytic Systems prepares to launch a line of new inverters, power supplies and intelligent battery chargers for 2012.

"Our extensive experience with the commercial marine market gives us a real appreciation for the operational challenges facing our customer,” said Bill Walker, Vice President, Sales and Marketing. "Our understanding of those challenges combined with our expertise as a supplier to various commercial and military marine users worldwide, gives us tremendous insights as our customers approach leaner budgets.  We remain committed to delivering exceptional value from production through the entire life cycle, whatever the fleet."


Analytic Systems, www.analyticsystems.com is committed to innovative and cutting edge technology in the design and development of marine battery chargers, dc/dc converters, inverters and power supplies. Clients include: Northrop Grumman Ship Systems, US Marines, Lockheed Martin, CDI Marine, Washington State Ferries, US Navy, Textron Marine Systems, US Army, Foss Tugs, Wellcraft Marine, Washington Marine, Sperry Marine, Kobelt, Prime Mover Controls, Raymarine, Seaspan, ACB Boats, SeaArk Marine, Metal Shark and Boat Electric.  

Corvus Energy has been selected as a strategic storage technology provider for a range of Eco Marine Power's (EMP) projects, including the Aquarius wind and solar power system for ships, the Aquarius eco ship and Medaka urban solar-electric commuter ferry. By Kari Williamson

Corvus Energy technologies such as the AT6500 Energy Storage Module & Battery Management System will be incorporated into Eco Marine Power’s marine renewable energy designs.

Each battery module can be combined to form a custom-sized pack - from 6.5 kWh to multi-megawatt sized storage applications.

The EMP Aquarius System will incorporate Corvus Energy’s AT6500 Lithium NMC Technology allowing energy collected via the solar panels to be stored for use when the ship is at anchor or in harbour. The Corvus Battery Management System (BMS) will also enable to energy collected from the solar panels to be used while the ship is underway as required.

The Aquarius System uses an array of rigid but movable sails to collect wind and solar energy which are positioned by a computer system taking into account the speed of the ship and prevailing weather conditions. The system can also be used while a ship is at anchor or in harbour.