Patent application number | Description | Published |
20090239139 | SECONDARY BATTERY AND METHOD FOR MANUFACTURING SECONDARY BATTERY - An electrode group | 09-24-2009 |
20100003599 | METHOD FOR PRODUCING CURRENT COLLECTOR FOR NON-AQUEOUS ELECTROLYTE SECONDARY BATTERY, METHOD FOR PRODUCING ELECTRODE FOR NON-AQUEOUS ELECTROLYTE SECONDARY BATTERY, AND NON-AQUEOUS ELECTROLYTE SECONDARY BATTERY - An objective is to improve the mechanical strength and the durability of a current collector for a non-aqueous electrolyte secondary battery and to allow an active material layer to be efficiently carried on the surface of the current collector with high adhesion. This objective is achieved with the use of a pair of processing means being disposed such that the surfaces thereof are in press contact with each other to form a press nip for passing a sheet material therethrough and having a plurality of recesses formed on the surface of at least one of the processing means, by passing a metallic foil for current collector through the press nip between the processing means to perform compression, thereby to form a plurality of projections on at least one surface of the metallic foil for current collector by partial plastic deformation associated with the compression. | 01-07-2010 |
20100112452 | BATTERY CURRENT COLLECTOR, METHOD FOR PRODUCING THE SAME, AND NON-AQUEOUS SECONDARY BATTERY - The invention relates to a battery current collector including a metal foil for carrying at least a positive electrode active material or a negative electrode active material. At least one side of the metal foil has a compressed base plane and non-compressed protrusions arranged at a predetermined interval, and the non-compressed protrusions are formed at the same time as formation of the base plane. The surface roughness of the base plane is different from the surface roughness of the protrusions, and the surface roughness of the base plane is preferably an arithmetic mean roughness of 0.8 μm or less. | 05-06-2010 |
20100116799 | ROLLER MACHINING METHOD AND ROLLER MACHINING APPARATUS - A laser beam | 05-13-2010 |
20100285353 | ELECTRODE STRUCTURE FOR NON-AQUEOUS ELECTROLYTE SECONDARY BATTERY, METHOD FOR PRODUCING THE SAME, AND NON-AQUEOUS ELECTROLYTE SECONDARY BATTERY - An electrode | 11-11-2010 |
20100304199 | SECONDARY BATTERY AND METHOD FOR MANUFACTURING SECONDARY BATTERY - An electrode group | 12-02-2010 |
20100310927 | CURRENT COLLECTOR TERMINAL PLATE FOR SECONDARY BATTERY, SECONDARY BATTERY, AND METHOD FOR PRODUCING SECONDARY BATTERY - A current collector terminal plate comprising a plate-shaped conductive material is used. The conductive material has an expected welding portion that melts with priority. The conductive material has, for example, a bent portion forming a protrusion on one side and a depression on the other side and a flat portion, and the expected welding portion includes the bent portion. The bent portion has a pair of upstanding portions raised from the flat portion and a bent top portion extending continuously from the pair of upstanding portions. | 12-09-2010 |