Patents Assigned to ARCACTIVE LIMITED
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Patent number: 11276847Abstract: A method for forming a connection such as an electrical connection, to a fibre material electrode element comprises moving a length of the fibre material relative to a pressure injection stage and pressure impregnating by a series of pressure injection pulses a lug material into a lug zone part of the fibre material to surround and/or penetrate fibres of the fibre material and form a lug strip in the lug zone. The fibre material may be a carbon fibre material and the lug material a metal such as Pb or a Pb alloy. Apparatus for forming an electrical connection to a fibre material electrode element is also disclosed.Type: GrantFiled: October 8, 2019Date of Patent: March 15, 2022Assignee: ArcActive LimitedInventors: John Abrahamson, Shane Christie, Hannu Out, Euan Scott Heffer, Yoon San Wong
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Patent number: 11108034Abstract: Lead-acid batteries with low water consumption and hydrogen gassing, comprise electrodes of a carbon fibre material having a surface area of less than 50 m2/g. The carbon fibre material may also comprise non-carbon functional groups less than 22% by mass in the bulk fibre, and at least 78% carbon by mass in the bulk fibre. The carbon fibre material may be heated to a temperature of at least 1000° C. and cooled in an inert atmosphere to prevent non-carbon functional groups reforming on the carbonised carbon fibre material. The batteries are suitable for use in hybrid vehicles.Type: GrantFiled: October 6, 2016Date of Patent: August 31, 2021Assignee: ARCACTIVE LIMITEDInventors: John Abrahamson, Grigory Isaac Titelman
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Patent number: 10903501Abstract: Batteries comprise a carbon fibre electrode construction of the invention and have improved DCA and/or CCA, and/or may maintain DCA with an increasing number of charge-discharge cycles, and thus may be particularly suitable for use in hybrid vehicles.Type: GrantFiled: December 20, 2016Date of Patent: January 26, 2021Assignee: ARCACTIVE LIMITEDInventors: Shane Christie, Yoon San Wong, Grigory Titelman, John Abrahamson
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Patent number: 10903480Abstract: A method for impregnating an active paste into a fibre material in the manufacture of an electrode of a lead acid battery or cell, comprises moving a fibre material through a confined pasting zone also containing a Pb-based paste, while vibrating and maintaining a pressure on the paste, to continuously impregnate the paste into the fibre material. A paste impregnating machine is also disclosed, with a fibre material feed system, and which may use a lug along the fibre material to draw the fibre material through the paste application stage.Type: GrantFiled: December 9, 2016Date of Patent: January 26, 2021Assignee: ARCACTIVE LIMITEDInventors: John Abrahamson, Shane Christie, Euan Scott Heffer, Hannu Out, Aimee Pavitt, Grigory Isaac Titelman, Yoon San Wong
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Publication number: 20190088931Abstract: Lead-acid batteries with low water consumption and hydrogen gassing, comprise electrodes of a carbon fibre material having a surface area of less than 50 m2/g. The carbon fibre material may also comprise non-carbon functional groups less than 22% by mass in the bulk fibre, and at least 78% carbon by mass in the bulk fibre. The carbon fibre material may be heated to a temperature of at least 1000° C. and cooled in an inert atmosphere to prevent non-carbon functional groups reforming on the carbonised carbon fibre material. The batteries are suitable for use in hybrid vehicles.Type: ApplicationFiled: October 6, 2016Publication date: March 21, 2019Applicant: ArcActive LimitedInventors: John Abrahamson, Grigory Isaac Titelman
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Patent number: 10096819Abstract: A method for forming an electrical connection to a microscale electrically conductive fiber material electrode element, such as a carbon fiber electrode element of a Pb-acid battery, comprises pressure impregnating into the fiber material an electrically conductive lug material, such as molten Pb metal, to surround and/or penetrate fibers and form an electrical connection to the fiber material and provide a lug for external connection of the electrode element. Other methods of forming a lug for external connection are also disclosed.Type: GrantFiled: September 20, 2013Date of Patent: October 9, 2018Assignee: ARCACTIVE LIMITEDInventors: John Abrahamson, Suzanne Furkert, Shane Christie, Yoon San Wong
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Patent number: 9666868Abstract: A lead-acid battery or cell comprises electrode(s) of with current collector(s) of a fibrous material with an average interfiber spacing of less than 50 microns. The current collector material may be a carbon fiber material which has been thermally treated by electric arc discharge. The fibrous current collector material may comprise an impregnated paste comprising a mixture of lead sulphate particles and dilute sulfuric acid.Type: GrantFiled: December 23, 2010Date of Patent: May 30, 2017Assignee: ArcActive LimitedInventor: John Abrahamson
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Patent number: 9543589Abstract: Batteries comprise a carbon fiber electrode construction of the invention and have improved DCA and/or CCA, and/or may maintain DCA with an increasing number of charge-discharge cycles, and thus may be particularly suitable for use in hybrid vehicles.Type: GrantFiled: March 8, 2013Date of Patent: January 10, 2017Assignee: ARCACTIVE LIMITEDInventors: Shane Christie, Yoon San Wong, Grigory Titelman, John Abrahamson