US 9,812,944 B2
Discharge device
Toru Daigo, Tokyo (JP); Taisuke Iwakiri, Tokyo (JP); and Takuya Miyanaga, Tokyo (JP)
Assigned to Mitsubishi Electric Corporation, Chiyoda-ku, Tokyo (JP)
Filed by Mitsubishi Electric Corporation, Tokyo (JP)
Filed on Aug. 31, 2015, as Appl. No. 14/840,161.
Claims priority of application No. 2015-101683 (JP), filed on May 19, 2015.
Prior Publication US 2016/0344217 A1, Nov. 24, 2016
Int. Cl. H02J 17/00 (2006.01); H02M 1/32 (2007.01); H03K 17/082 (2006.01); H03K 17/08 (2006.01)
CPC H02M 1/32 (2013.01) [H03K 17/0822 (2013.01); H03K 17/0828 (2013.01); H02M 2001/322 (2013.01); H03K 2017/0806 (2013.01)] 13 Claims
OG exemplary drawing
 
1. A discharge device, comprising:
a switch element connected in parallel to an electrical storage element;
a constant current output unit which supplies a constant current to the switch element; and
a control unit which gives an on or off instruction to the constant current output unit, wherein
the control unit controls the constant current output unit by setting an on-time of the switch element so as to cause energy with which is charged in the electrical storage element to be discharged through the switch element, the on-time being less than a limit time which is an energization time where an energization current of the switch element reaches a limiting current of the switch element, to thereby turn off the switch element in a region in which the energization current is lower than the limiting current.