Patent ID: 9181683
Filing Date: 2015-11-10
Classification: B60K,B60L,B60W,E02F,H01M,H02J,Y02E,Y02T,Y10S

Abstract:
1. An electric power control apparatus for a construction machine, comprising: a motor; an electrical storage device which performs supply and receive of electric power with the motor, the electrical storage device including a plurality of electrical storage modules; an electrical-storage-device temperature detector which detects a temperature relating to the electrical storage device; a temperature-condition judgment section which judges whether the electrical storage device is under a predetermined non-steady temperature condition, based on the temperature detected by the electrical-storage-device temperature detector; a module-temperature detection section which detects a plurality of module temperatures which are respective temperatures of the electrical storage modules; an adopted-module-temperature selection section which selects a module temperature most deviated to a side of the non-steady temperature condition, from the module temperatures detected by the module-temperature detection section, as a adopted-module-temperature; and a charge/discharge-electric-power-upper-limit setting section which sets an upper limit of charge electric power and an upper limit of discharge electric power of the electrical storage device, based on the adopted-module-temperature selected by the adopted-module-temperature selection section, when the temperature-condition judgment section judges that the electrical storage device is under the non-steady temperature condition, wherein: the non-steady temperature condition on which the temperature-condition judgment section makes a judgment includes a low temperature condition, under which the temperature detected by the electrical-storage-device temperature detector is lower than a predetermined temperature; and the adopted-module-temperature selection section selects a lowest module temperature corresponding to a lowest temperature of the module temperatures detected by the module-temperature detection section, as the adopted-module-temperature, when the temperature-condition judgment section judges that the electrical storage device is under the low temperature condition.