A discharging circuit, connected to both terminals of a lithium battery, includes a first discharge resistor, a second discharge resistor, and a transistor for occasionally discharging the lithium battery to reduce the SOC difference among respective lithium batteries constituting a combination battery. A voltage detecting circuit detects a terminal voltage of the lithium battery via the first discharge resistor. A discharge controller judges a failure occurring in the discharging circuit based on a comparison between a terminal voltage value detected when the transistor is turned on and a terminal voltage value detected when the transistor is turned off.

 
Web www.patentalert.com

< Electrical apparatus with cover for retractably housing an electrical cable connected thereto

< Circuits and methods for synchronizing non-constant frequency switching regulators with a phase locked loop

> Power factor correction circuit

> Method and apparatus for starting a gas turbine using a polyphase electric power generator
~ 00217