Control Device and Control Method For Cooling Fan
AssigneeToyota Jidosha Kabushiki Kaisha
InventorsKoji Aridome, Yusuke Suzuki
Life of this patent
Estimating the term…
Abstract
A hybrid ECU executes a program including the steps of: setting a fan driving level F for a cooling fan, as based on a high voltage battery's temperature TB, SOC and input and output currents, and a vehicular cabin's internal temperature and background noise; detecting from a signal transmitted from a voltage sensor the voltage of an auxiliary battery serving as a power supply for the cooling fan; and setting a duty command value for the cooling fan from fan driving level F and the auxiliary battery's voltage so that the duty command value is smaller as a voltage of the auxiliary battery is higher.
Claims30
A control device for a cooling fan receiving electric power from a first power storage mechanism to be driven to blow cooling air to cool a second power storage mechanism connected to said first power storage mechanism to supply said first power storage mechanism with electric power via a converter converting voltage, comprising:
- a voltage sensor detecting a voltage of said first power storage mechanism;
- and
- an operation unit connected to said voltage sensor, said operation unit controlling a number of revolutions of said cooling fan and setting a control value in accordance with the voltage of said first power storage mechanism for varying the number of revolutions of said cooling fan.
A control method for a cooling fan receiving electric power from a first power storage mechanism to be driven to blow cooling air to cool a second power storage mechanism connected to said first power storage mechanism to supply said first power storage mechanism with electric power via a converter converting voltage, comprising the steps of:
- controlling a number of revolutions of said cooling fan;
- detecting a voltage of said first power storage mechanism;
- and
- setting a control value in accordance with the voltage of said first power storage mechanism for varying the number of revolutions of said cooling fan.
A control device for a cooling fan receiving electric power from a first power storage mechanism to be driven to blow cooling air to cool a second power storage mechanism connected to said first power storage mechanism to supply said first power storage mechanism with electric power via a converter converting voltage, comprising:
- control means for controlling a number of revolutions of said cooling fan;
- detection means for detecting a voltage of said first power storage mechanism;
- and
- setting means for setting a control value in accordance with the voltage of said first power storage mechanism for varying the number of revolutions of said cooling fan.
Dependencies are inferred from the claim text.