Control device for hybrid vehicle

• US 6,943,460 B2
• Filed: 07/14/2003
• Issued: 09/13/2005
• Est. Priority Date: 07/16/2002
• Status: Active Grant

• Current Assignee: Honda Giken Kogyo Kabushiki Kaisha (Honda Motor Company)
• Original Assignee: Honda Giken Kogyo Kabushiki Kaisha (Honda Motor Company)
• Inventors: Kishida, Makoto, Hara, Kazuhiro, Hanada, Kohei, Yonekura, Takahiro, Wakashiro, Teruo, Nishi, Tomohiro
• Primary Examiner(s): Schuberg, Darren
• Assistant Examiner(s): Cuevas, Pedro J.
• Application Number:
  US10/617,749
• Publication Number:
  US 20040012206A1
• Time in Patent Office: 792 Days
• Field of Search: 290/9, 290 16- 18, 290/40.C, 180 651- 658
• US Class Current: 290/40.00C
• CPC Class Codes: B60K 6/485 Motor-assist type
• CPC Class Codes: B60K 6/54 Transmission for changing ratio
• CPC Class Codes: B60L 50/16 with provision for separate direct mechanical propulsion
• CPC Class Codes: B60L 58/24 for controlling the temperature of batteries
• CPC Class Codes: B60L 58/25 by controlling the electric load
• CPC Class Codes: B60L 58/27 by heating
• CPC Class Codes: B60W 10/06 including control of combustion engines
• CPC Class Codes: B60W 10/08 including control of electric propulsion units, e.g. motors or generators
• CPC Class Codes: B60W 10/26 for electrical energy, e.g. batteries or capacitors
• CPC Class Codes: B60W 20/00 Control systems specially adapted for hybrid vehicles hybrid vehicle design, B60K6/00; electric vehicles B60L
• CPC Class Codes: B60W 2510/244 Charge state
• CPC Class Codes: B60W 2510/246 Temperature
• CPC Class Codes: B60W 2520/10 Longitudinal speed
• CPC Class Codes: B60W 2540/10 Accelerator pedal position
• CPC Class Codes: B60W 30/20 Reducing vibrations in the driveline
• CPC Class Codes: H01M 10/486 for measuring temperature
• CPC Class Codes: H01M 10/615 Heating or keeping warm
• CPC Class Codes: H01M 10/625 Vehicles
• CPC Class Codes: H01M 10/633 characterised by algorithms, flow charts, software details or the like
• CPC Class Codes: H01M 10/635 based on ambient temperature
• CPC Class Codes: H01M 10/637 : characterised by the use of reversible temperature-sensitive devices, e.g. NTC, PTC or bimetal devices; characterised by control of the internal current flowing through the cells, e.g. by switching means for preventing undesired use or discharge H01M50/572
• CPC Class Codes: H01M 10/663 : the system being an air-conditioner or an engine
• CPC Class Codes: Y02E 60/10 : Energy storage using batteries
• CPC Class Codes: Y02T 10/62 : Hybrid vehicles
• CPC Class Codes: Y02T 10/70 : Energy storage systems for electromobility, e.g. batteries
• CPC Class Codes: Y02T 10/7072 : Electromobility specific charging systems or methods for batteries, ultracapacitors, supercapacitors or double-layer capacitors

Abstract

A control device for a hybrid vehicle, the hybrid vehicle comprising an engine and a motor as power sources, the control device including: a battery device sending energy to and receiving energy from the motor, a temperature sensor for measuring the temperature of the battery device; a control section which is adapted to execute a warming control operation for the battery device when the temperature of the battery device is low; and a determination section for determining whether a cylinder deactivation operation is permitted for the engine depending on the running state of the engine. The control section executes a vibration control operation for the engine by operating the motor so as to reduce vibration of the engine when it is determined by the determination section that the partial cylinder deactivation operation is permitted for the engine, and to perform the warming control operation for the battery device by executing a vibration control operation for the engine.

Claims

1. A control device for a hybrid vehicle, the hybrid vehicle comprising an engine, which is adapted to allow a partial cylinder deactivation operation, a motor, which is capable of power generation, and driving wheels, the output power of at least one of the engine and the motor being transmitted to the driving wheels for driving the hybrid vehicle;

the control device comprising;

a battery device sending energy to and receiving energy from the motor;

a temperature measuring section for measuring the temperature of the battery device;

a control section which is adapted to execute a warming control operation for the battery device when the temperature of the battery device measured by the temperature measuring section is equal to or lower than a first predetermined value; and

a determination section for determining whether the partial cylinder deactivation operation is permitted for the engine depending on the running state of the engine, wherein

the control section is further adapted to execute a vibration control operation for the engine by operating the motor so as to reduce vibration of the engine when it is determined by the determination section that the partial cylinder deactivation operation is permitted for the engine, and to perform the warming control operation for the battery device by executing a vibration control operation for the engine.

2. A control device for a hybrid vehicle according to claim 1, wherein the warming control operation for the battery device by executing vibration control operation for the engine is performed only in the case in which a state of charge of the battery device is greater than a predetermined value, and the temperature of the battery device is higher than a second predetermined value.

3. A control device for a hybrid vehicle according to claim 1, wherein the control section is further adapted to operate the engine in an all-cylinder operation state when it is determined by the determination section that the partial cylinder deactivation operation is not permitted for the engine, and to perform the warming control operation for the battery device by charging the battery device with electrical energy generated by the motor.

4. A control device for a hybrid vehicle according to claim 1, wherein the determination section is adapted to determine whether the partial cylinder deactivation operation is permitted for the engine depending on one of the parameters including the temperature of cooling water of the engine, a state of charge of the battery device, and the temperature of the battery device.

5. A control device for a hybrid vehicle according to claim 1, wherein the determination section is adapted to determine whether the partial cylinder deactivation operation is permitted for the engine while containing a threshold value which is determined by a depression amount of an accelerator pedal and the vehicle speed.

6. A control device for a hybrid vehicle according to claim 1, wherein, when it is determined that the partial cylinder deactivation operation is permitted, and when the warming control operation for the battery device is performed by executing the vibration control operation, an amplitude for the vibration control operation is differently set depending on the temperature of the battery device.

7. A control device for a hybrid vehicle according to claim 6, wherein a greater amplitude for the vibration control operation is set when a greater increase in the temperature of the battery device is required.