| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a secondary battery which, by applying appropriate load to an electrode body, restricts increase in internal resistance during high rate charging/discharging to extend a cycle life, and a battery pack constructed by a combination of a plurality of those secondary batteries. <P>SOLUTION: A secondary battery of the present invention comprises: a power storage section which includes an electrode body consisting of a cathode plate and an anode plate, composed by forming an active material layer in part of a current collector, which are laminated or wound in flat form with a separator interposed in between and a rectangular shaped battery case which accommodates the electrode body, the electrode body being such that the active material layers of the cathode and the anode plates lie one on top of another via the separator; a cathode terminal section consisting of a cathode collector protruding from the power storage section to one end side; and an anode terminal section consisting of an anode collector protruding from the power storage section to the other end side opposite to the cathode terminal section. Also included is a compression member, located inside the battery case, which presses a prescribed range on the cathode terminal section and anode terminal section sides of the power storage section in the thickness direction of the power storage section. <P>COPYRIGHT: (C)2013,JPO&INPIT |
