HYBRID VEHICLE

• US 20110000725A1
• Filed: 07/02/2010
• Published: 01/06/2011
• Est. Priority Date: 07/06/2009
• Status: Abandoned Application

• Current Assignee: Suzuki Motor Corporation
• Original Assignee: Suzuki Motor Corporation
• Inventors: Ono, Masakazu, Murota, Naoya, Konno, Hiroyuki, Takekoshi, Fumihiko
• Application Number:
  US12/830,024
• Publication Number:
  US 20110000725A1
• Time in Patent Office: Days
• US Class Current: 180/65.245
• CPC Class Codes: B60K 6/46 Series type
• CPC Class Codes: B60L 58/15 Preventing overcharging
• CPC Class Codes: B60L 7/10 Dynamic electric regenerative braking B60L7/22 takes precedence
• CPC Class Codes: B60W 10/06 including control of combustion engines
• 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 20/13 in order to stay within battery power input or output limits; in order to prevent overcharging or battery depletion
• CPC Class Codes: B60W 2510/244 Charge state
• CPC Class Codes: B60W 2520/10 Longitudinal speed
• CPC Class Codes: B60W 2540/10 Accelerator pedal position
• CPC Class Codes: B60W 2540/12 Brake pedal position
• 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 10/92 Energy efficient charging or discharging systems for batteries, ultracapacitors, supercapacitors or double-layer capacitors specially adapted for vehicles

Abstract

In a hybrid vehicle including an engine; a generator for generating electrical power from the engine; a battery charged with electrical power generated by the generator; and a motor driven by electrical power generated by the generator or by electrical power output by the battery, and with a view to reducing energy consumption from the battery without using complicated control operations while preventing overcharging of the battery, the hybrid vehicle further includes a motoring control unit for starting motoring, i.e., mechanical driving of the engine, in addition to regenerative power generation when a state of charge of the battery reaches a first set value and stopping the motoring of the engine when the state of charge of the battery reaches a second set value. A battery management unit is also provided for starting power generation from the engine when a state of charge of the battery becomes higher than a third set value and stopping the engine when the state of charge of the battery reaches a fourth set value. Engine motoring control during regeneration and control of power generation by the engine can be separately performed.

Claims

1. A hybrid vehicle comprising an engine;

a generator for generating electrical power from the driving force of said engine;

a battery charged with electrical power generated by said generator; and

a motor driven by electrical power generated by said generator or by electrical power output from said battery, said hybrid vehicle further comprising motoring control means for starting motoring of said engine in addition to regenerative power generation when a state of charge of said battery reaches a first set value and stopping the motoring of said engine when the state of charge of said battery reaches a second set value lower than the first set value.

2. The vehicle of claim 1, wherein the power consumed by motoring of said engine executed by said motoring control means is larger than the amount of power generated by regenerative power generation.

3. The vehicle of claim 1, further comprising power generation control means for starting power generation by operating said engine when a state of charge of said battery becomes higher than a third set value lower than the second set value and stopping power generation by said engine when the state of charge of said battery reaches a fourth set value higher than the third set value and lower than the second set value.

4. A hybrid vehicle comprising an engine;

a generator for generating electrical power from the driving force of said engine;

a battery charged with electrical power generated by said generator; and

a motor driven by electrical power generated by said generator or by electrical power output from said battery, said hybrid vehicle further comprising a motoring control unit for starting motoring of said engine in addition to regenerative power generation when a state of charge of said battery reaches a first set value and stopping the motoring of said engine when the state of charge of said battery reaches a second set value lower than the first set value.

5. The vehicle of claim 4, wherein the power consumed by motoring of said engine executed by said motoring control unit is larger than the amount of power generated by regenerative power generation.

6. The vehicle of claim 4, further comprising a battery management unit for starting power generation by operating said engine when a state of charge of said battery becomes higher than a third set value lower than the second set value and stopping power generation by said engine when the state of charge of said battery reaches a fourth set value higher than the third set value and lower than the second set value.