POWER DELIVERY SYSTEM OF HYBRID VEHICLE

• US 20080039261A1
• Filed: 08/07/2007
• Published: 02/14/2008
• Est. Priority Date: 08/08/2006
• Status: Abandoned Application

• Current Assignee: Hyundai Motor Company (Hyundai Motor Group)
• Original Assignee: Hyundai Motor Company (Hyundai Motor Group)
• Inventors: CHO, Sung Tae, KIM, Nam Wook, LEE, Jang Moo
• Application Number:
  US11/834,884
• Publication Number:
  US 20080039261A1
• Time in Patent Office: Days
• US Class Current: 475/5
• CPC Class Codes: B60K 1/02 comprising more than one electric motor
• CPC Class Codes: B60K 6/365 with the gears having orbital motion
• CPC Class Codes: B60K 6/40 characterised by the assembly or relative disposition of components
• CPC Class Codes: B60K 6/445 Differential gearing distribution type
• CPC Class Codes: B60K 6/547 the transmission being a stepped gearing
• CPC Class Codes: B60W 10/02 including control of driveline clutches
• CPC Class Codes: B60W 10/08 including control of electric propulsion units, e.g. motors or generators
• 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 20/40 Controlling the engagement or disengagement of prime movers, e.g. for transition between prime movers power-up or power-down of the driveline B60W30/192
• CPC Class Codes: B60W 30/18127 Regenerative braking
• CPC Class Codes: F16H 2037/102 the input or output shaft of the transmission is connected or connectable to two or more differentials
• CPC Class Codes: F16H 2037/106 with switching means to provide two variator modes or ranges
• CPC Class Codes: F16H 2200/201 with three sets of orbital gears
• CPC Class Codes: F16H 2200/2035 with two engaging means
• CPC Class Codes: F16H 3/728 with means to change ratio in the mechanical gearing
• CPC Class Codes: Y02T 10/62 Hybrid vehicles

Abstract

A power delivery system of a hybrid vehicle includes: a planetary gear part disposed including a first planetary gear, a second planetary gear, and a third planetary gear; a driving motor/generator part including a first motor/generator connected to the third planetary gear such that a power delivery can be performed therebetween, and a second motor/generator configured to deliver power to a driving shaft via the second planetary gear and supporting an engine in a starting state so as to operate the driving shaft; a clutch part connected to the planetary gear part such that the hybrid vehicle can drive by changing the operation mode at at least a critical mechanical point wherein the mechanical power of the driving motor/generator part is zero; and a controller controlling operations of the driving motor/generator part and the clutch part.

Claims

1. A power delivery system of a hybrid vehicle, comprising:

a planetary gear part disposed within a transaxle housing of the hybrid vehicle and including a first planetary gear, a second planetary gear, and a third planetary gear;

a driving motor/generator part including a first motor/generator connected to the third planetary gear such that power is delivered therebetween, and a second motor/generator configured to deliver power to a driving shaft via the second planetary gear so as to operate the driving shaft together with power generated by the engine;

a clutch part connected to the planetary gear part such that the hybrid vehicle can drive by changing an operation mode of a transmission at at least a critical mechanical point wherein a mode conversion between a first compound-split mode and a second compound-split mode occurs; and

a controller controlling the operation mode of the driving motor/generator part and the clutch part depending on the operation mode of the hybrid vehicle.

2. The power delivery system of claim 1, wherein the first planetary gear is connected to the engine so as to receive power generated by the engine.

3. The power delivery system of claim 1, wherein the first motor/generator of the driving motor/generator part is connected to a third carrier of the third planetary gear, and the second motor/generator is connected to a second sun gear of the second planetary gear.

4. The power delivery system of claim 1, wherein the clutch part comprises:

a first clutch connected to both the second planetary gear and the third planetary gear of the planetary gear part, and operating such that power generated by the engine and the first and the second motor/generators can be delivered to a driving shaft; and

a second clutch one end of which is connected to the third planetary gear and the other end of which is connected to an inside of the transaxle housing, and operating to increase torque of the first motor/generator required for initial driving of the hybrid vehicle.

6. The power delivery system of claim 1, wherein braking and inertia energy generated in the hybrid vehicle is delivered to the second motor/generator via the second planetary gear while the hybrid vehicle runs at a regenerative braking mode of the second compound-split mode.

5. The power delivery system of claim I, wherein braking and inertia energy generated in the hybrid vehicle is delivered to the first motor/generator via the second planetary gear while the hybrid vehicle runs at a regenerative braking mode of the first compound-split mode.