Patents Assigned to Northvolt AB
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Patent number: 11888182Abstract: A secondary cell is disclosed, comprising a first end plate and a second end plate. The first end plate comprises a contacting tab configured to provide an electrical contact between a first electrode of an electrode assembly and a first terminal, as well as a first spacer arrangement arranged between the first end plate and the electrode assembly and configured to secure the electrode assembly in a length direction. The second end plate comprises a current collector and a second spacer arrangement, wherein the second spacer arrangement is arranged to secure the electrode assembly in the length direction and the current collector to secure the electrode assembly in a direction orthogonal to the length direction. A method for assembling such a cell is also disclosed.Type: GrantFiled: August 29, 2022Date of Patent: January 30, 2024Assignee: NORTHVOLT ABInventor: Seungho Kwak
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Patent number: 11757160Abstract: This disclosure presents an electrode lead plate (6) for a cylindrical secondary cell (1) comprising a terminal part (4) and an electrode roll (3) comprising a conductive sheet (3a). The electrode lead plate (6) comprises an inner contact region (6c) configured to be arranged in direct electrical contact with the terminal part (4), an outer contact region (6e) configured to be arranged in direct electrical contact with the conductive sheet (3a), and a fuse region (6d). Further, a terminal part (4) and a cylindrical secondary cell (1), as well as uses and methods of manufacture, are presented.Type: GrantFiled: April 15, 2022Date of Patent: September 12, 2023Assignee: NORTHVOLT ABInventors: Tetsuya Makino, Brendan Sexton, Kenya Shatani, Marouene Ben Messaoud
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Patent number: 11670815Abstract: The disclosure provides a cylindrical secondary cell (1) and a method of its assembly. The cylindrical secondary cell (1) comprises a cylindrical can (2) comprising a beading groove (3), a first conductive sheet (4), with first electrode coating (4a), wound to form a jelly roll (5), the first conductive sheet (4) comprises a portion free of first electrode coating (4a) protruding on a first end side (5a), and an electrode lead plate (6) arranged at the first end side (5a) and in direct contact with the portion free of first electrode coating (4a). The electrode lead plate (6) comprises a flange (6a) extending away from the jelly roll (5) and arranged along the edge of the electrode lead plate (6). The beading groove (3) is arranged on the cylindrical can (2) such that the flange of the electrode lead plate (6) is bent and pressed inwards, towards a centre of the cylindrical can (2), by the beading groove (3).Type: GrantFiled: April 18, 2022Date of Patent: June 6, 2023Assignee: Northvolt ABInventors: Tetsuya Makino, Daniel Lowe
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Patent number: 11664561Abstract: This disclosure presents an electrode lead plate (6) for a cylindrical secondary cell (1) comprising a terminal part (4) and an electrode roll (3) comprising a conductive sheet (3a). The electrode lead plate (6) comprises an inner contact region (6c) configured to be arranged in direct electrical contact with the terminal part (4) and an outer contact region (6e) configured to be arranged in direct electrical contact with the conductive sheet (3a), wherein the inner contact region (6c) is recessed in relation to the outer contact region (6e). Further, a terminal part (4) and a cylindrical secondary cell (1), as well as uses and methods of manufacture, are presented.Type: GrantFiled: April 15, 2022Date of Patent: May 30, 2023Assignee: NORTHVOLT ABInventors: Tetsuya Makino, Brendan Sexton, Kenya Shatani, Marouene Ben Messaoud
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Patent number: 11509000Abstract: A process for removal of aluminium and iron in the recycling of rechargeable batteries comprising providing a leachate from black mass, adding phosphoric acid (H3PO4) to said leachate and adjusting the pH to form iron phosphate (FePO4) and aluminium phosphate (AlPO4), precipitating and removing the formed FePO4 and AlPO4, and forming a filtrate for further recovery of cathode metals, mainly NMC-metals and lithium.Type: GrantFiled: April 14, 2020Date of Patent: November 22, 2022Assignee: NORTHVOLT ABInventors: Mahmood Alemrajabi, Ingrid Karlsson, Ragnar Sjödahl, Emma Nehrenheim, Martina Petranikova, Cristian Tunsu
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Patent number: 11450933Abstract: This disclosure presents a terminal (30) for a secondary cell (40). The terminal (30) comprises a terminal plate (20) comprising a through-hole (21) and an inner surface (23) adapted to face the interior of the secondary cell (40). The terminal (30) further comprises a terminal rivet (1) that extends through the through-hole (21) of the terminal plate (20). The terminal rivet (1) comprises a first flange (6) that comprises a protruding portion (7), and the protruding portion (7) extends into the inner surface (23) of the terminal plate (20) in a riveted state (1b). The disclosure also presents a terminal rivet (1).Type: GrantFiled: December 1, 2021Date of Patent: September 20, 2022Assignee: Northvolt ABInventor: Myungjae Jang
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Patent number: 10995014Abstract: A process for generating a metal sulfate that involves crystallizing a metal sulfate from an aqueous solution to form a crystallized metal sulfate in a mother liquor with uncrystallized metal sulfate remaining in the mother liquor; separating the crystallized metal sulfate from the mother liquor; basifying a portion of the mother liquor to convert the uncrystallized metal sulfate to a basic metal salt; and using the basic metal salt upstream of crystallizing the metal sulfate. So crystallized, the generated metal sulfate may be battery-grade or electroplating-grade.Type: GrantFiled: October 9, 2020Date of Patent: May 4, 2021Assignees: Northvolt AB, Hatch Ltd.Inventors: Robert John Fraser, Evangelos Stamatiou, Mark Joseph Machado, Henry Christian Immo von Schroeter, Mahmood Alemrajabi