PACKED BATTERY, POWER SUPPLY SYSTEM, AND METHOD OF MANUFACTURING PACKED BATTERY

摘要

PPROBLEM TO BE SOLVED: To provide a battery pack in which charge and discharge depth can be detected precisely, which is high in reliability and in which a stable high output can be obtained. PSOLUTION: This is the battery pack in which a plurality of nonaqueous secondary batteries A12 is made as the main body and in which the plurality of the nonaqueous secondary batteries A and a storage element B13 having at least one piece of nonaqueous electrolyte for voltage detection are connected in series, and when a voltage difference between a voltage (VSBA1/SB) per a unit cell at the discharge depth 25% and the voltage (VSBA2/SB) per the unit cell at the discharge depth 75% in the nonaqueous secondary battery A is made as VSBA/SB, and the voltage (VSBB1/SB) per the unit cell at the discharge depth corresponding to the discharge depth 25% of the nonaqueous secondary battery A and the voltage (VSBB2/SB) per the unit cell at the discharge depth corresponding to the discharge depth 75% of the nonaqueous secondary battery A in the storage element B is made as VSBB/SB, the VSBB/SBof the storage element B is larger than the VSBA/SBof the nonaqueous secondary battery A. PCOPYRIGHT: (C)2007,JPO&INPIT