Abstract: The present invention relates a system (30) comprising a plurality of battery modules (10) and a cold plate (30) for cooling the battery modules. Each battery module comprises a plurality of stacked battery cells (11) and two side plates (12), each side plate having a protruding lower edge (14) supporting a bottom surface (15). The cold plate comprises a base plate (31) provided with cooling channels, wherein the base plate (31) is thermally connected to the bottom surface (15) of the battery cells (11) in each battery module (10); an inlet port (24) for feeding cooling media via the cooling channels to an outlet port (26), and at least one cut-out (32) configured to house one of the protruding lower edges (14) of the side plates (12).

Abstract: A method and control arrangement for monitoring coating quality during production of electrodes of secondary cells. The production of electrodes comprises a coating process including coating slurry onto a conductive substrate and drying the coated conductive substrate, and a calendering process. The method comprises measuring (S1), during the coating process and/or calendering process, power consumption of one or more electrical components used for performing the coating process and/or calendering process and evaluating (S3) the coating quality by analyzing the measured power consumption using coating quality criteria, wherein the coating quality criteria defines coating quality of the secondary cells based on measured power consumption of the one or more electrical components.

Abstract: 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.

Abstract: The present disclosure generally pertains to testing of secondary batteries. More specifically, the disclosure relates to a movable walk-in chamber for testing secondary cells. According to a first aspect, the present disclosure relates to a movable walk-in chamber for testing secondary cells comprising an enclosure, racking, a plurality of cycler interfaces and cabling. The enclosure form at least one thermally isolated temperature chamber. Furthermore, the enclosure comprises a walking aisle arranged between an entrance and an exit. The racking is arranged at inner walls of the enclosure along the walking aisle. Secondary cells can be inserted in the racking for testing and removed after testing. The plurality of cycler interfaces are arranged at outer walls of the enclosure. Each cycler interface comprises a power interface and one or more cell interfaces.

Abstract: 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.

Abstract: 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.

Abstract: 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).

Abstract: 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.

Abstract: 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.

Abstract: 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).

Abstract: 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.