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lithium-ion batteries

US recommends aircraft-specific lithium-ion thermal runaway tests

Fri, 05/23/2014 - 11:12 -- David Appleyard
Thermal runaway testing for aircraft batteries recommended

US authorities have recommended the Federal Aviation Administration (FAA) adopt aircraft-specific lithium-ion battery tests and other measures to evaluate the risk of internal short circuits, following the infamous Boeing Dreamliner incident.

The US National Transportation Safety Board (NTSB) is conducting an ongoing investigation of a fire event that occurred in January 2013 of a lithium-ion battery on a Boeing 787 parked at Boston Logan Airport.

In a letter to the FAA, the National Transportation Safety Board (NTSB) has said that the processes used in 2006 to support the certification of the GS Yuasa lithium-ion battery designed for the Boeing 787 were inadequate, in part, because there is no standardised thermal runaway test conducted in the environment and conditions that would most accurately reflect how the battery would perform when installed and operated.

Investigators found the battery involved showed evidence not just of an internal thermal runaway but that “unintended electrical interactions occurred among the cells, the battery case, and the electrical interfaces between the battery and the airplane.”

The NTSB said that including subject matter experts outside of the aviation industry “could further strengthen the aircraft certification process” by ensuring that both the FAA and the aircraft manufacturer have access to the most current research and information related to the developing technology.

In the letter to the FAA, the NTSB recommended five measures including developing an aircraft-level thermal runaway test to demonstrate safety performance in the presence of an internal short circuit failure; Requiring the above test as part of certification of future aircraft designs; Re-evaluating internal short circuit risk for lithium-ion batteries now in-service; Developing guidance for thermal runaway test methods; Include a panel of independent expert consultants early in the certification process for new technologies installed on aircraft.

The final report on the January 2013 Boston 787 battery fire investigation is estimated to be completed in the autumn.

Polypore signs long-term deal with Panasonic for Celgard expander

Fri, 05/09/2014 - 12:25 -- David Appleyard
Polypore and Panasonic deal

Polypore has secured a five-year contract to supply Panasonic with its Celgard brand separators for use in large format lithium-ion cells. This long-term agreement includes guaranteed purchase and supply volume requirements over its term.

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Sony, Hydro-Québec to form energy storage JV

Fri, 04/25/2014 - 09:07 -- Tildy Bayar
Sony, Hydro-Québec to form energy storage JV

Sony and Hydro-Québec are to form a joint venture to research and develop a large-scale energy storage system for power grids, the companies have announced.


The intention is to combine Sony’s control techniques for olivine-type lithium-ion iron phosphate rechargeable batteries and scalable module systems with Hydro-Québec’s operation and control technologies for electric power supplies as well as its lithium-ion battery technology.  

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MHI to sell battery manufacturing business

Fri, 04/25/2014 - 08:51 -- Tildy Bayar
MHI to sell battery manufacturing business

Mitsubishi Heavy Industries (MHI) is to sell its battery manufacturing business and focus instead on grid-tied energy storage.


The purchaser is Taiwanese firm Delta Electronics. The two companies said they have finalized a deal giving Delta Mitsubishi’s rechargeable lithium-ion battery manufacturing concern, including machinery. The two companies will continue to work together to further develop the battery business, they said.

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GM to invest $65m in Detroit battery factory

Fri, 04/11/2014 - 11:24 -- Editor
GM to invest $65m in Detroit battery factory

GM is to invest $65 million in its lithium-ion battery plant in Detroit as part of a $449 million boost to its Chevy Volt manufacturing facility.


GM’s Brownstown Battery Assembly, a 479,000 square feet facility 20 miles south of Detroit, produces the lithium-ion battery packs for GM’s extended-range electric vehicles. It started mass production in October 2010 and is the first high-volume manufacturing site in the US operated by a major car manufacturer for automotive lithium-ion battery production.

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LG to enter e-bike lithium-ion market

Fri, 04/11/2014 - 11:07 -- Tildy Bayar
LG to enter e-bike lithium-ion market

LG Chem, a division of Korean electronics giant LG, is reportedly reviewing a plan to begin manufacturing batteries for electric bicycles.


According to the Korean IT Times, LG has shown its hand after clear signs that both the e-bike and rechargeable battery markets are growing, with growth in the latter sector accelerated by the trend toward replacing lead-acid batteries with lithium-ion.

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Daimler to buy Evonik's li-ion business

Fri, 04/11/2014 - 10:52 -- Tildy Bayar
Daimler to buy Evonik's li-ion business

German carmaker Daimler is to acquire two battery cell manufacturing companies from its erstwhile partner Evonik Industries, the companies have announced. 


Under the terms of their agreement, Daimler will acquire a 50.1% stake in Evonik’s battery cell company Li-Tec Battery and a 10% stake in joint venture Deutsche Accumotive, making Daimler the sole owner of both companies. Details of the agreement were not revealed.

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Nickel-Manganese-Cobalt licensed for cathodes

Fri, 12/13/2013 - 10:09 -- Ruth Williams
Lithium-nickel-manganese-cobalt-oxide

The global developer of chemicals, materials and energy storage solutions, 3M, has teamed up with Korea-based ECOPRO to develop a patent license to build upon existing work in nickel-manganese-cobalt (NMC) for cathode materials for lithium-ion batteries.

Under the license agreement, 3M is granting a license for use of three patented cathodes it holds. These patents are US6964828, US7078128, US8241791 and all global equivalents that relate to preparing compositions useful as cathodes for lithium-ion batteries.

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