Patent ID: 8546011
Filing Date: 2013-10-01
Classification: H01M,Y02E,Y02P,Y10T

Abstract:
1. A method for producing an assembled battery, comprising the following steps: (a) producing a plurality of toroidal unit cells each having a through-hole and each toroidal unit cell comprising an inner side wall defining the through-hole, an outer side wall defining an outer circumference of the toroidal unit cell, and a core between the inner side wall and the outer side wall by: (b) arranging the plurality of toroidal unit cells in a nested manner such that one toroidal unit cell is disposed within the through-hole of another toroidal unit cell: and (c) electrically connecting the plurality of toroidal unit cells with one another in parallel or in series, wherein the inner side wall of an outer unit cell of two adjacent nested unit cells serves as the outer side wall of an inner unit cell of the two adjacent nested unit cells, so that the two adjacent nested unit cells share a common side wall and the common side wall shared by the two adjacent nested unit cells is configured as a double-wall structure including two shell walls that are connected integrally via heat dissipating fins.