Interconnection

An interconnection for a battery, the battery comprising a plurality of cells having connection tabs, wherein the interconnection establishes electrical connections between the plurality of cells and/or establishes electrical connections between the plurality of cells and a terminal of the battery, the interconnection comprising:

• a first electrically insulating substrate having a first face on a first side of the interconnection and a second face;
• a heat sink positioned adjacent to and in direct contact with and along the second face of the first substrate on a second side of the interconnection;
• a plurality of tab-receiving regions comprising electrically conducting material on the first side of the interconnection for receiving connection tabs of the cells;
• a plurality of apertures extending through the substrate and the heat sink, wherein the apertures are arranged so that the connection tabs of the cells extend from a second side of the interconnection, through the apertures in the substrate and the heat sink, to the first side of the interconnection for establishing contact with the tab-receiving regions on the first side of the interconnection;
• and
• electrically insulating material arranged to line the apertures extending through the heat sink so as to provide an insulating barrier between the apertures and the heat sink;
• such that connection tabs extending through the apertures of the substrate and heat sink are electrically insulated from the heat sink.