| 摘要 |
PROBLEM TO BE SOLVED: To suppress sudden drop in the output due to the internal impedance, etc., of a secondary battery. SOLUTION: This battery pack has a secondary battery 1, a step-up circuit 2 which steps up the output of the secondary battery 1, a capacitor 3 which is connected in parallel with the step-up circuit 2 and is charged by the boosted output, a constant-voltage regulator 4 making the voltage of the discharge output of the capacitor 3 constant, and a reverse current blocking diode 5 via which the output of the constant-voltage regulator 4 is connected to the output side of the secondary battery. The sudden drop in the output of the secondary voltage is compensated for by the constant-voltage regulator 4 via the diode 5, the output characteristics when a high load is connected are improved, a sudden drop in the output caused by the internal impedance in a low temperature state and in a discharge capacity drop state of the secondary battery is suppressed, the discharge capability of the secondary battery can be effectively used up and further, the output characteristics at the time of pulse discharging is improved, and a pulse discharging effective output time is improved.
|
