To provide an electrode lamination type battery in which short-circuiting of a positive electrode and a negative electrode can be prevented, the thickness of a positive electrode lead terminal side and a negative electrode lead terminal side is made uniform, and which is safe and has a high volume energy density.
In the electrode lamination type battery, the positive electrode is constructed of a positive electrode current collector 1 and a positive electrode active material layer 2 which is formed on the positive electrode current collector 1 so that at least a part of the positive electrode current collector 1 may be exposed, and the negative electrode is constructed of a negative electrode current collector 7 and a negative electrode mixture layer 6 which is formed on the negative electrode current collector 7 so that at least a part of the negative electrode current collector 7 may be exposed. Insulating covering materials 10a-10g are provided at the exposed portion of the negative electrode current collector 7 which may contact possibly the exposed portion of the positive electrode current collector 1 and/or at the exposed portion of the positive electrode current collector 1 which may contact possibly the exposed portion of the negative electrode current collector 7, and these covering materials 10a-10g are arranged so that the thickness may be uniform when the positive electrode and the negative electrode are alternately laminated.
COPYRIGHT: (C)2005,JPO&NCIPI
JP2000067906A | ||||
JP2002042881A |
Koichi Mori