| 摘要 |
<p>PROBLEM TO BE SOLVED: To reduce the number of times for turning on and off a main circuit relay even if thermo-on and thermo-off are repeated by judging whether discharge from a secondary cell is stopped based on a stop cause or not when electrical equipment is stopped during discharge operation from the secondary cell. SOLUTION: A rechargeable unit control part 36 (control part for achieving a function as a discharge control means and other functions) for controlling the discharge operation of a secondary cell 34 uses information for indicating the rotation and stop of a compressor 24 and a main circuit voltage as input, controls a charge main circuit relay 31 and a discharge main circuit relay 35, and at the same time performs the chopper control of a bi-directional converter part 33, thus turning on and off the discharge main circuit relay 35 only when a main switch 21 of an air conditioner 2 is operated, and greatly reducing the number of times for turning on and off the discharge main circuit relay 35 in a middle period when an air-conditioning load is small.</p> |
