HYBRID WORKING MACHINE HAVING BATTERY PROTECTING FUNCTION
First Claim
1. A working machine having a battery protecting function, comprising:
- a hydraulic actuator;
an engine;
a hydraulic pump which is connected to the engine and driven by an output power of the engine to supply hydraulic fluid to the hydraulic actuator;
a battery;
a generator motor which is connected to the engine to serve as a generator by the output power of the engine to charge the battery and serve as a motor for assisting the engine by supply of an electric power from the battery;
a battery monitor which detects a battery SOC indicating a charging state of the battery;
a controller which controls a charging power of the battery depending on the battery SOC detected by the battery monitor; and
a working state detector which detects a working state as information for discriminating between a working period during which the hydraulic actuator is actuated and a standby period during which the hydraulic actuator is not actuated, whereinthe controller limits the charging power in the standby period in comparison with in the working period.
1 Assignment
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Accused Products
Abstract
Provided is a hybrid working machine capable of performing battery charging control both for a working period and a standby period. The hybrid working machine includes a hydraulic actuator, an engine, a hydraulic pump driven by the engine to supply hydraulic fluid to the hydraulic actuator, a battery, a generator motor connected to the engine to serve as a generator by an output power of the engine to charge the battery and serve as a motor for assisting the engine by supply of an electric power from the battery, a battery monitor detecting a battery SOC, a controller which controls a charging power of the battery depending on the battery SOC, and a working state detector detecting a working state as information for discriminating between a working period during which the hydraulic actuator is actuated and a standby period during which the hydraulic actuator is not actuated. The controller limits the charging power in the standby period in comparison with in the working period.
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Citations
6 Claims
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1. A working machine having a battery protecting function, comprising:
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a hydraulic actuator; an engine; a hydraulic pump which is connected to the engine and driven by an output power of the engine to supply hydraulic fluid to the hydraulic actuator; a battery; a generator motor which is connected to the engine to serve as a generator by the output power of the engine to charge the battery and serve as a motor for assisting the engine by supply of an electric power from the battery; a battery monitor which detects a battery SOC indicating a charging state of the battery; a controller which controls a charging power of the battery depending on the battery SOC detected by the battery monitor; and a working state detector which detects a working state as information for discriminating between a working period during which the hydraulic actuator is actuated and a standby period during which the hydraulic actuator is not actuated, wherein the controller limits the charging power in the standby period in comparison with in the working period. - View Dependent Claims (2, 3, 4, 5, 6)
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Specification