BATTERY CHARGE/DISCHARGE CONTROL DEVICE, BATTERY CHARGE/DISCHARGE CONTROL METHOD, AND HYBRID WORKING MACHINE WITH BATTERY CHARGE/DISCHARGE CONTROL DEVICE
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Abstract
A battery charge/discharge control device which performs battery charge/discharge control in a working machine with a battery capable of storing electric energy generated by a generator motor coupled to an engine and driving the generator motor or at least one of other electric actuators by the stored electric energy and a controller which controls a distribution of the electric energy among the battery, the generator motor, and the electric actuator, wherein the controller performs the charge/discharge control in which the electric energy of the battery is discharged when the engine is driven and recharging to the battery is permitted on a condition that a state in which an engine speed is equal to or lower than a predetermined engine speed is maintained for a predetermined time after the battery is completely discharged.
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Citations
13 Claims
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1-4. -4. (canceled)
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5. A battery charge/discharge control device which performs battery charge/discharge control in a working machine with a battery capable of storing electric energy generated by a generator motor coupled to an engine and driving the generator motor or at least one of other electric actuators by the stored electric energy and a controller which controls a distribution of the electric energy among the battery, the generator motor, and the electric actuator,
wherein the controller performs the charge/discharge control in which the electric energy of the battery is discharged when the engine is driven and recharging to the battery is permitted on a condition that a cancelation signal for canceling prohibition of recharging to the battery is received after the battery is completely discharged.
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8-9. -9. (canceled)
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10. A battery charge/discharge control method which performs battery charge/discharge control in a working machine with a battery capable of storing electric energy generated by a generator motor coupled to an engine and driving the generator motor or at least one of other electric actuators by the stored electric energy and a controller which controls a distribution of the electric energy among the battery, the generator motor, and the electric actuator, the method comprising:
performing, by the controller, the charge/discharge control in which the electric energy of the battery is discharged when the engine is driven and recharging to the battery is permitted on a condition that a cancelation signal for canceling prohibition of recharging to the battery is received after the battery is completely discharged.
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11. (canceled)
Specification