Power generating and storage system having a common stator

• US 20070199744A1
• Filed: 02/28/2006
• Published: 08/30/2007
• Est. Priority Date: 02/28/2006
• Status: Abandoned Application

• Current Assignee: Caterpillar Incorporated
• Original Assignee: Caterpillar Incorporated
• Inventors: Leman, Scott
• Application Number:
  US11/363,233
• Publication Number:
  US 20070199744A1
• Time in Patent Office: Days
• US Class Current: 180/65.22
• CPC Class Codes: B60K 6/105 the accumulator being a flywheel
• CPC Class Codes: B60K 6/26 characterised by the motors or the generators
• CPC Class Codes: B60K 6/46 Series type
• CPC Class Codes: B60K 6/48 Parallel type
• CPC Class Codes: B60L 15/20 for control of the vehicle or its driving motor to achieve a desired performance, e.g. speed, torque, programmed variation of speed
• CPC Class Codes: B60L 2200/36 Vehicles designed to transport cargo, e.g. trucks
• CPC Class Codes: B60L 2240/421 Speed
• CPC Class Codes: B60L 2240/441 Speed
• CPC Class Codes: B60L 50/16 with provision for separate direct mechanical propulsion
• CPC Class Codes: B60L 50/30 using propulsion power stored mechanically, e.g. in fly-wheels
• CPC Class Codes: B60L 50/40 using propulsion power supplied by capacitors
• CPC Class Codes: H02K 16/02 Machines with one stator and two or more rotors
• CPC Class Codes: H02K 7/006 Structural association of a motor or generator with the drive train of a motor vehicle
• CPC Class Codes: H02K 7/025 for power storage
• CPC Class Codes: H02K 7/1815 structurally associated with reciprocating piston engines general aspects of generating sets, e.g. housing, F02B63/04
• CPC Class Codes: Y02E 60/16 Mechanical energy storage, e.g. flywheels or pressurised fluids
• CPC Class Codes: Y02T 10/62 Hybrid vehicles
• CPC Class Codes: Y02T 10/64 Electric machine technologies in electromobility
• 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
• CPC Class Codes: Y02T 10/72 : Electric energy management in electromobility

Abstract

A power system for a mobile vehicle is disclosed. The power system has a power source, a first rotor mechanically driven by the power source, and a second rotor rotationally decoupled from the power source. The power system also has a stator common to the first and second rotors.

Claims

1. A power system, comprising:

a power source;

a first rotor mechanically driven by the power source;

a second rotor rotationally decoupled from the power source; and

a stator common to the first and second rotors.

2. The power system of claim 1, wherein the second rotor is a flywheel configured to selectively store and release rotational energy.

3. The power system of claim 2, wherein the inertial mass of the second rotor is greater than the inertial mass of the first rotor.

4. The power system of claim 1, wherein the stator is operatively mechanically connected to the power source.

5. The power system of claim 1, wherein the second rotor is operatively mechanically connected to the power source.

6. The power system of claim 1, wherein the second rotor is operatively electrically driven by the first rotor.

7. The power system of claim 6, wherein the first rotor is operatively electrically driven by the second rotor.

8. A mobile vehicle, comprising:

an engine;

a stator operatively mechanically connected to the engine;

a first rotor mechanically driven by the engine to interact with the stator and produce electrical power;

a traction device operatively driven by the electrical power to propel the mobile vehicle; and

a second rotor configured to interact with the stator and store and release power rotationally.

9. The mobile vehicle of claim 8, wherein the second rotor is rotationally decoupled from the engine.

10. The mobile vehicle of claim 8, wherein the second rotor is a flywheel and has an inertial mass greater than that of the first rotor.

11. The mobile vehicle of claim 8, wherein at least one of the stator and the second rotor is operatively mechanically connected to the power source.

12. The mobile vehicle of claim 8, wherein:

the second rotor is operatively electrically driven by the first rotor; and

the first rotor is operatively electrically driven by the second rotor.