公开(公告)号：EP2897242A4

公开(公告)日：2016-05-04

申请号：EP13837841

申请日：2013-09-11

申请人： PANASONIC IP MAN CO LTD

发明人： MOCHIZUKI KENTO ,  TAZAKI SHINTARO

IPC分类号： H02H7/00 ,  B60L3/00 ,  B60L11/18 ,  G01R31/02 ,  H01H47/00 ,  H02H3/16 ,  H02J7/00

CPC分类号： G01R31/025 ,  B60L3/00 ,  B60L3/0046 ,  B60L3/0069 ,  B60L3/04 ,  B60L11/18 ,  B60L11/1816 ,  B60L11/1825 ,  G01R31/006 ,  G01R31/043 ,  G01R31/3278 ,  H01H47/00 ,  H01H47/002 ,  H01H2047/003 ,  H02H3/16 ,  H02H7/00 ,  Y02T10/7005 ,  Y02T10/7072 ,  Y02T90/121 ,  Y02T90/128 ,  Y02T90/14

摘要： In the present invention, the connection between an external power supply and a unit for detecting welding of a relay is disestablished at least when a short circuit is detected, thereby preventing the short circuit from being falsely detected in the event that the short circuit and the welding of the relay can both be detected. A device for detecting welding of a relay detects welding of a relay provided to a path via which a cell is charged by an external power supply. Welding of a power-supply-side relay or a ground-side relay is detected on the basis of a current flowing disproportionately more toward the external power supply than the power-supply-side relay or ground-side relay when a control unit has deactivated the power-supply-side relay or ground-side relay during an interrupting in charging. A disconnecting switch establishes or disestablishes the connection between the external power supply and a weld-detection switch.