| 摘要 |
PURPOSE:To obtain a laminated thin-film lithium battery, which can discharge at high voltage during discharge and can be charged with a voltage of around the electromotive force of the elementary battery during charge, by stacking thin-film lithium batteries and insulating members alternately, and providing a circuit which switches the connection of each elementary battery. CONSTITUTION:Elementary batteries each consisting of a positive material 1', a lithium-ion conducting electrolyte 2' and a negative material 3' are stacked, with insulating members 5' interposed between them, so as to make a main battery body 11. The main battery body 11 is provided with positive and negative terminals 12 and 13, which are connected to a connection-controlling circuit 14 by means of wirings 15 and 15'. Although electric power is supplied to a semiconductor device 18 usually from an external power source through a wiring 17, when the external power source is cut off, electric power is supplied to the semiconductor device 18 through a wiring 17' extending from the battery. After that, when the battery is charged through a wiring 16, the charge can be performed with such a small applied voltage as around 2V, which is the electromotive force of the elementary battery. |
