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Sensor System helps prevent Li-Ion battery safety hazards.

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January 16, 2013 - Used to detect and preempt short circuits, lithium-ion battery safety sensor system provides early warning of developing hazardous conditions inside lithium-ion cell. Technology employs sensors in combination with proprietary signal processing algorithms and works for any lithium-ion battery chemistry. In lithium-ion cell packs, system is effective over range of temperatures as well as in automotive duty cycles and does not require changes in cell design.

TIAX Announces Breakthrough Sensor Technology for Preventing Lithium-ion Battery Safety Incidents


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Tiax LLC
15 Acorn Park
Cambridge, MA, 02140
USA



Press release date: January 11, 2013

LEXINGTON, Mass. -- TIAX LLC (TIAX), a leading developer of advanced technologies and materials for batteries, today introduced its lithium-ion battery safety sensor system for detecting and pre-empting short circuits inside a lithium-ion cell. Short circuits can lead to safety events such as explosions and fires.

"Safety incidents in lithium-ion batteries, while infrequent, can be hazardous for consumers and can result in expensive recalls. The primary cause of these safety incidents is short circuits inside cells, which are not present at the point of manufacture and which, to date, have been impossible to detect in the field," said Dr. Brian Barnett, vice-president at TIAX.

A key component of TIAX's lithium-ion battery safety sensor system is based on a proven sensing technology that TIAX has had in the market for many years in a different application. "The use of our sensor system provides early warning of developing hazardous conditions due to internal shorts thus enabling a range of appropriate interventions," added Dr. Barnett. 

"Lithium-ion battery technology has been a great boon to portable electronic devices such as smart phones and tablets, and to electric drive vehicles," said Dr. Kenan Sahin, President of TIAX. "Detecting internal shorts in lithium-ion cells before they lead to safety hazards has been elusive until now, and has been described as the 'holy grail' of lithium-ion battery safety enhancements. TIAX is very proud to have developed the breakthrough sensor system, that can enable effective measures to mitigate the until-now-unpredictable field failures and thus accelerate the expansion of this very critical industry by lessening the need for expensive hazard mitigation mechanisms and regulations."

This patent-pending technology employs sensors in combination with proprietary signal processing algorithms. It works for any lithium-ion battery chemistry. In lithium-ion cell packs it is effective over a wide range of temperatures and also in automotive duty cycles. It is low-cost and reliable. The system does not need changes in cell design, which makes it easy to incorporate it into battery systems.

TIAX is also developing an instrument incorporating this breakthrough sensor that will allow battery developers to design safer, longer lasting, lithium-ion battery packs.

TIAX's work in lithium-ion battery safety was mostly self-funded, with additional funds provided through a competitively won multi-year award under DOE's Vehicle Technologies Program.

About TIAX

Headquartered in Lexington, MA, TIAX LLC (www.TIAXLLC.com) develops and sells scalable, de-risked, prototyped, IP-protected technologies in clean-energy, energy storage, energy efficiency and advanced sensors with applications in vehicles, buildings and security.

TIAX lithium-ion battery-related technologies under development include a high performance electrolyte that functions at high-voltages and high-temperatures, a patented breakthrough silicon anode that lengthens battery run time, a novel active cell balancing system that improves battery life and safety, and an advanced sensor that detects electrical shorts inside cells to prevent safety-related events.

TIAX's CAM-7(TM) cathode material for lithium-ion batteries, after 10 years of development, has been introduced to the market for portable electronics and transportation applications. Batteries using CAM-7 last longer, cost less, and deliver more power. TIAX has built a plant in Massachusetts with a capacity up to 300 tons per year to produce CAM-7. The plant is operated by CAMX Power, a TIAX subsidiary.

Recently TIAX was chosen as an affiliate member of the Battery Hub being led by Argonne National Laboratory which combines the capabilities of five U.S. DOE National Laboratories with selected companies and universities.

Contact:
Bernard D. Lupien
Vice President, Sales
TIAX LLC
Phone: +1 781.879.1289
E-mail: lupien.bernard@tiaxllc.com
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