IPC분류정보
국가/구분 |
United States(US) Patent
등록
|
국제특허분류(IPC7판) |
|
출원번호 |
US-0674624
(2003-09-30)
|
우선권정보 |
JP-0300500 (2002-10-15) |
발명자
/ 주소 |
|
출원인 / 주소 |
|
대리인 / 주소 |
|
인용정보 |
피인용 횟수 :
3 인용 특허 :
4 |
초록
▼
In an air conditioner for a hybrid vehicle, an air conditioning unit performs air-conditioning operation by electrical power supplied from a battery. When a residual charging degree of the battery becomes equal to or lower than a target degree, an electrical motor generator is driven by a vehicle en
In an air conditioner for a hybrid vehicle, an air conditioning unit performs air-conditioning operation by electrical power supplied from a battery. When a residual charging degree of the battery becomes equal to or lower than a target degree, an electrical motor generator is driven by a vehicle engine so that the battery is charged through the electrical motor generator. Further, when a rotation speed of the engine is lower than a predetermined speed or when a power generation efficiency due to the engine is lower than a predetermined efficiency, air-conditioning capacity of the air conditioning unit is set lower, so that a consumption power of the air conditioner is restricted. Accordingly, the frequency for starting the engine only for charging the battery can be reduced.
대표청구항
▼
1. An air conditioner for a hybrid vehicle, the hybrid vehicle having an engine for running the vehicle, an electrical motor generator for running the vehicle and for generating electrical power, and a battery for supplying electrical power to the electrical motor generator, the air conditioner comp
1. An air conditioner for a hybrid vehicle, the hybrid vehicle having an engine for running the vehicle, an electrical motor generator for running the vehicle and for generating electrical power, and a battery for supplying electrical power to the electrical motor generator, the air conditioner comprising:an air conditioning unit, to which electrical power is supplied from the battery, for performing air-conditioning operation in a passenger compartment of the vehicle; and a control unit for controlling operation of the air conditioning unit, wherein: when a residual charging degree of the battery becomes equal to or lower than a target degree, the electrical motor generator is driven by the engine to charge the battery; and the control unit gradually decreases the air conditioning capacity of the air conditioning unit from a maximum air conditioning capacity to a minimum air conditioning capacity as the rotation speed of the engine decreases from a first predetermined rotation speed to a second predetermined rotation speed that is smaller than the first predetermined rotation speed. 2. The air conditioner according to claim 1, wherein:the air conditioning unit includes a refrigerant cycle system in which refrigerant circulates; and the refrigerant cycle system includes an electrical compressor, operated using electrical power supplied from the battery, for compressing refrigerant. 3. An air conditioner for a hybrid vehicle, the hybrid vehicle having an engine for running the vehicle, an electrical motor generator for running the vehicle and for generating electrical power, and a battery for supplying electrical power to the electrical motor generator, the air conditioner comprising:an air conditioning unit, to which electrical power is supplied from the battery, for performing air-conditioning operation in a passenger compartment of the vehicle; and a control unit for controlling operation of the air conditioning unit, the control unit including means for calculating a power generation efficiency of the engine, wherein: when a residual charging degree of the battery becomes equal to or lower than a target degree, the electrical motor generator is driven by the engine to charge the battery; and when the power generation efficiency due to the engine is equal to or lower than a predetermined efficiency, the control unit decreases an air-conditioning capacity of the air conditioning unit, as compared with a case where the power generation efficiency due to the engine is higher than the predetermined efficiency. 4. The air conditioner according to claim 3, wherein:the air conditioning unit includes a refrigerant cycle system in which refrigerant circulates; and the refrigerant cycle system includes an electrical compressor, operated using electrical power supplied from the battery, for compressing refrigerant. 5. The air conditioner according to claim 3, wherein the control unit gradually decreases the air conditioning capacity of the air conditioning unit from a maximum air conditioning capacity to a minimum air conditioning capacity as the power generation efficiency due to the engine decreases from the predetermined rotation speed.6. The air conditioner according to claim 1, wherein:when a rotation speed of the engine is lower than a first predetermined rotation speed, the control unit sets the air conditioning unit to a first air conditioning capacity; and when the rotation speed of the engine is greater than the first predetermined rotation speed, the control unit sets the air conditioning unit to a second air conditioning capacity, the second air conditioning capacity always being greater than the first air conditioning capacity. 7. The air conditioner according to claim 3, wherein:when the power generation efficiency due to the engine is lower than the predetermined efficiency, the control unit sets the air conditioning unit to a first air conditioning capacity; and when the power generation efficiency due to the engine is greater than the predetermined rotation speed, the control unit sets the air conditioning unit to a second air conditioning capacity, the second air conditioning capacity always being greater than the first air conditioning capacity. 8. An air conditioner for a hybrid vehicle, the hybrid vehicle having an engine for running the vehicle, an electrical motor generator for running the vehicle and for generating electrical power, and a battery for supplying electrical power to the electrical motor generator, the air conditioner comprising:an air conditioning unit, to which electrical power is supplied from the battery, for performing air-conditioning operation in a passenger compartment of the vehicle; and a control unit for controlling operation of the air conditioning unit, wherein: when a residual charging degree of the battery becomes equal to or lower than a target degree, the electrical motor generator is driven by the engine to charge the battery; and when a rotation speed of the engine is lower than a predetermined rotation speed, the control unit sets the air conditioning unit to a first air conditioning capacity; and when the rotation speed of the engine is greater than the predetermined rotation speed, the control unit sets the air conditioning unit to a second air conditioning capacity, the second air conditioning capacity always being greater than the first air conditioning capacity. 9. An air conditioner for a hybrid vehicle, the hybrid vehicle having an engine for running the vehicle, an electrical motor generator for running the vehicle and for generating electrical power, and a battery for supplying electrical power to the electrical motor generator, the air conditioner comprising:an air conditioning unit, to which electrical power is supplied from the battery, for performing air-conditioning operation in a passenger compartment of the vehicle; and a control unit for controlling operation of the air conditioning unit, the control unit including means for calculating a power generation efficiency, wherein: when a residual charging degree of the battery becomes equal to or lower than a target degree, the electrical motor generator is driven by the engine to charge the battery; when the power generation efficiency due to the engine is lower than a predetermined efficiency, the control unit sets the air conditioning unit to a first air conditioning capacity; and when the power generation efficiency due to the engine is greater than the predetermined rotation speed, the control unit sets the air conditioning unit to a second air conditioning capacity, the second air conditioning capacity always being greater than the first air conditioning capacity.
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