US lithium separator maker Dreamweaver International (Dreamweaver) has partnered with Australia’s materials developer Nano-Nouvelle for the development of electrode materials.
The collaboration is aimed to support Nano-Nouvelles’ range of electrodes for advanced battery systems.
EV battery producers LG Chem and SK Innovation have withdrawn their patent lawsuit in the US and South Korea about inorganic material-coated separators.
The two companies agreed to not file any lawsuits over patents or seek damages for the next 10 years in Korea or overseas and cooperate in the electric vehicle battery business.
Hollingsworth & Vose (H&V), a battery separator manufacturer, has acquired Indian filtration media and battery separator maker Raman FibreScience (Raman) with immediate effect.
Raman manufactures a range of battery separators for flooded lead-acid batteries. According to the Mysore-headquartered company, the battery separators are suitable for use in automotive, standby power, industrial tubular and traction batteries. Raman has an international customer base.
Battery separator manufacturer Entek is investing £10m ($17m) to develop its next generation lead-acid separator materials for automotive batteries at its UK manufacturing plant.
The company is keeping the new separator, which will be formally unveiled at the 14th European Lead Battery Conference in Edinburgh this September, under wraps. The first phase of the investment includes £2.5m of new machinery installed at its site near the city of Newcastle, with more to follow in the coming 18 months.
The US Patent & Trademark Office issued Johnson Controls Autobatterie GmbH a patent for a set of separators for a lead-acid rechargeable battery on 17 September.
According to the abstract released by the US Patent & Trademark Office: "The invention relates to a method for converting a separator processing machine for processing separators for a lead accumulator, comprising the steps of ending a supply of a first separator having a first separator width to the separator processing machine and supplying a second separator having a second separator width that differs from the first separator width to the separator processing machine.
“According to the invention, the separators comprise a base film body extending along a center line and a plurality of primary ribs, which are raised above the base film body along the center line by a primary rib height and are disposed mirror-symmetrically with respect to the center line, wherein the primary ribs of the second separator with respect to the center line are disposed in the same locations as the primary ribs of the first separator."
Porous Power Technologies (PPT) has launched a line of ceramic-filled battery separators designed to improve the thermal stability and safety of the large-format lithium-ion batteries used in electric vehicles, flat-cell consumer electronics, and high-power applications.
Under heat, the ceramic-filled polymer separators fuse together, leaving a thin film of ceramic particles between the electrodes and reduce the likelihood of hard shorts that can lead to thermal runaway and cell failure.
The ceramic particles are evenly distributed throughout the PPT chemically inert PVDF polymer. The particles reside primarily in the pore walls, leaving a large and uniform open pore structure that enable ions to pass through with less resistance and less heat generation.
The separators will provide greater power in high-current applications as well as having increased thermal stability with less cell degradation. The design offers reduced separator shrinkage, extended cycle life, higher bake-out and operating temperatures, and improved puncture and abuse resistance.
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