Series & parallel combined dual power drive system

1. A series and parallel combined dual power system operating either as a series combined power system, or as a parallel combined power system; comprising:

an engine;

a primary dynamo-electric unit;

a secondary dynamo-electric unit; and

a first rechargeable device charged by the system;

a rotary part of the engine being coupled to the primary dynamo-electric unit through at least one of a first clutch and a first variable transmission device comprising a first differential gear;

a rotary part of the primary dynamo-electric unit being coupled to the secondary dynamo-electric unit through at least one of a second clutch and a second variable transmission device comprising a second differential gear;

a rotary part of the secondary dynamo-electric unit being coupled to a load through at least one of a third clutch and a third variable transmission device;

a drive control unit including circuits to control the primary dynamo-electric unit, the secondary dynamo-electric unit, and the rechargeable device;

a central control unit comprising a device subject to control by a control interface and manipulating the drive control unit;

the control interface comprising a device subject to manual input or input of a control signal to control the operation of the system;

a redundant rechargeable device controlled by a start switch to drive a starter motor of the engine;

wherein:

the system operates as the series combined power system in case of a light load;

the load is driven by the engine in case of a normal load;

each of the primary and the secondary dynamo-electric units function as a motor on power from the rechargeable device to jointly drive the load with the power from the engine; and each function as a generator to provide power to the rechargeable device in case of a light load; and

when the system is operating as the series combined power drive system, the second clutch is disengaged while the engine drives the primary dynamo-electric unit to operate as a generator and the power so generated drives the secondary dynamo-electric unit to operate as a motor for driving the load; and when the system is operating as the parallel combined power drive system the second clutch is closed up.

2. The series and parallel combined dual power system as claimed in claim 1 , wherein

the rotary part of the engine is coupled to the primary dynamo-electric unit through at least the first variable transmission device;

the rotary part of the primary dynamo-electric unit is coupled to the secondary dynamo-electric unit through at least the second clutch and the second variable transmission device; and

the rotary part of the secondary dynamo-electric unit is coupled to the load through at least the third variable transmission device.

3. The series and parallel combined dual power system as claimed in claim 1 , wherein

the rotary part of the engine is coupled to an input end of the second clutch through at least the first variable transmission;

an output end of the second clutch is coupled to the rotary part of the secondary dynamo-electric unit; and

the rotary part of the secondary dynamo-electric unit is coupled to the load through the third variable transmission device.

4. The series and parallel combined dual power system as claimed in claim 1 , wherein

the engine is coupled to the primary and secondary dynamo-electric units via an epicyclical gear set and a brake;

the rotary part of the engine is coupled to an epicyclical gear of the epicyclical gear set;

the rotary part of the primary dynamo-electric unit is coupled to a sun gear of the epicyclical gear set;

a lockup function is provided either by the primary dynamo-electric unit or by the brake, where the rotary part of the primary dynamo-electric unit is coupled to a rotary side of the brake, and a static side of the brake is locked to a casing or to a static part of the primary dynamo-electric unit;

wherein, when the primary dynamo-electric unit is in lockup status, rotary kinetic energy from the engine is outputted through an external gear.

5. The series and parallel combined dual power system as claimed in claim 1 , wherein:

when the primary dynamo-electric unit functions as a generator, the external gear is coupled to the input end of the second clutch and to the rotary side of the brake; and

the static side of the brake is locked to the casing of the system.

6. The series and parallel combined dual power system as claimed in claim 1 , wherein:

the engine is coupled to the primary and secondary dynamo-electric units via an revolving gear set and a brake;

the rotary part of the engine is coupled to a first end of the revolving gear set;

the rotary part of the primary dynamo-electric unit is coupled to a second end of the revolving gear set;

a lockup function is provided either by the primary dynamo-electric unit or by the brake, where the rotary part of the primary dynamo-electric unit is coupled to a rotary side of the brake, and a static side of the brake is locked to a casing or to a static part of the primary dynamo-electric unit;

wherein, when the primary dynamo-electric unit is in lockup status, rotary kinetic energy from the engine is outputted through a third end of the revolving gear set.

7. The series and parallel combined dual power system as claimed in claim 6 , wherein:

when the primary dynamo-electric unit functions as a generator, the third I/O end of the revolving gear set is coupled to the input end of the second clutch and to the rotary side of the brake; and

the static side of the brake is locked to the casing of the system.

8. The series and parallel combined dual power system as claimed in claim 1 , wherein;

the secondary dynamo-electric unit is a combined dual power dynamo-electric unit;

the engine is coupled to the primary dynamo-electric unit and to the combined dual power dynamo-electric unit via the first clutch, and the output from the third variable transmission unit drives the load;

a rotary part of the engine is coupled to the rotary part of the primary dynamo-electric unit through the first clutch and the first variable transmission unit, and coupled to a first rotary part of the dual power dynamo-electric unit through the second clutch and a rotary part of a brake;

the first rotary part and a second rotary part of the dual power dynamo-electric unit are manipulated by the drive control unit function as a motor or as a generator;

wherein the first and the second rotary parts of the dual power drive dynamo-electric unit provide electromagnetic lockup through manipulation of the drive control unit;

wherein a fourth clutch is provided between the first and the second rotary parts of the dual power drive dynamo-electric unit, wherein said fourth clutch is also configured to provide lockup subject to manipulation of the drive control unit.

9. The series and parallel combined dual power system as claimed in claim 1 , wherein;

the secondary dynamo-electric unit is a combined dual power dynamo-electric unit comprising first and second rotary parts;

the second clutch is provided between the rotary part of the primary dynamo-electric unit and the first rotary part of the dual power drive dynamo-electric unit;

a fourth clutch is provided between the first and the second rotary parts of the dual power drive dynamo-electric unit;

the system further comprises a brake, where a rotary part of the brake is coupled to the first rotary part of the dual power drive dynamo-electric unit, and a static part of the brake is locked to a casing;

wherein, when the second clutch is engaged and both the brake and the fourth clutch are disengaged, the engine drives the primary dynamo-electric as a generator, and the power so generated supplies at least one of the dual power drive dynamo-electric unit and the rechargeable device for the system to engage in series combined power drive operation;

when both the first and second clutches are engaged and both of the brake and the fourth clutch are disengaged, the power generated by at least one of the primary dynamo-electric unit and the rechargeable device supplies the dual power drive dynamo-electric unit;

when the brake is disengaged, and all said clutches are engaged, the dual power drive dynamo-electric unit drives the load; and

when both clutches are disengaged and the brake locked up, power generated by at least one of the primary dynamo-electric unit and the rechargeable device drives the dual power drive dynamo-electric unit to function as a motor.

10. The series and parallel combined dual power system as claimed in claim 1 , wherein;

the primary dynamo-electric unit and the engine are coupled to a multi-shaft variable transmission unit; and

the output end of the engine drives the load as driven by the dual power dynamo-electric unit through the second clutch;

the output end of the engine is coupled to the multi-shaft variable transmission unit, and

one of a plurality of output ends of the multi-shaft variable transmission unit drives the primary dynamo-electric unit through the first clutch, while other selected output ends of said plurality of ends of the multi-shaft variable transmission unit is coupled to the first rotary part of the dual power drive dynamo-electric unit through the second clutch and the rotary part of the brake;

as manipulated by the driver control unit, the first and the second rotary parts of the dual power drive dynamo-electric unit function as a motor or as a generator or lockup operation is provided between the first and the second rotary parts of the dual power drive dynamo-electric unit;

the third clutch is provided between the first and the second rotary parts of the dual power drive dynamo-electric unit and subject to the manipulation by the control unit.

11. The series and parallel combined dual power system as claimed in claim 10 , wherein;

the first rotary part of the dual power drive dynamo-electric unit is coupled to the rotary side of the brake, and the static side of the brake is locked to the casing of the system;

the second rotary part of the dual power drive dynamo-electric unit directly or indirectly through the optionally provided variable transmission outputs to drive the load;

with the second clutch engaged and the brake and the third clutch disengaged, the engine drives the primary dynamo-electric to function as a generator, and the power so generated is used to drive the dual power drive dynamo-electric unit to function as a motor and/or to recharge the rechargeable device for the system to engage in series combined power drive operation;

when both the first and second clutches are engaged and both of the brake and the third clutch are disengaged, the power generated by the primary dynamo-electric unit and/or that from the rechargeable device drive the dual power drive dynamo-electric unit for the rotary kinetic energy of the dual power drive dynamo-electric unit and those from the engine to provide output of summarized speed;

wherein differential motion between the first and the second rotary parts of the dual power drive dynamo-electric unit recharges the rechargeable device;

wherein with the brake disengaged, and the first, second and third clutches engaged, the dual power drive dynamo-electric unit transmits the rotary kinetic energy from the engine to drive the load;

wherein the dual power drive dynamo-electric unit functions as a motor or as a brake for power regeneration with the third clutch disengaged and the brake engaged;

wherein when both the second and third clutches are disengaged and the brake is locked up, at least one of the power generated form the primary dynamo-electric unit and that from the rechargeable device jointly drive the dual power drive dynamo-electric unit to function as a motor;

wherein the second rotary part of the dual power drive dynamo-electric unit drives at least one load through the variable transmission or other transmission device;

wherein the second rotary part of the dual power drive dynamo-electric unit is coupled to the input end of the variable transmission unit that provides differential motion for both output ends capable of providing differential motion of the differential variable transmission unit to drive the load; and

wherein the second clutch and the brake are manipulated to stay in disengaged status while the engine drives the primary dynamo-electric unit to function as a generator; the power so generated drives the dual power drive dynamo-electric unit to function as a generator to drive the load.

12. The series and parallel combined dual power system as claimed in claim 1 , wherein:

both the primary and the secondary dynamo-electric units share a common structure;

said common structure comprising a concentric arrangement of an external dynamo-electric structure, a central dynamo-electric structure and an internal dynamo-electric structure, the central dynamo-electric structure comprising an exterior part and an interior part;

wherein the primary dynamo-electric unit comprises the external dynamo-electric structure and said exterior part of the central dynamo-electric structure; and

the secondary dynamo-electric unit comprises the internal dynamo-electric structure and said interior part of the central dynamo-electric structure;

the central dynamo-electric structure is fixed to the casing of the system without engaging in rotation;

the external dynamo-electric structure is coupled to the engine through the first clutch or the variable transmission unit;

the second clutch is provided between the external and the internal dynamo-electric structures;

the internal dynamo-electric structure is coupled to the load; and

the load coupled to the rotary part of the secondary dynamo-electric unit is selectively coupled to the input end of the variable transmission unit capable of exercising differential motion for both output ends capable of exercising differential motion of the differential variable transmission unit.

13. The series and parallel combined dual power system as claimed in claim 1 , wherein:

both the primary and the secondary dynamo-electric units share a common structure;

said common structure comprising a concentric arrangement of an external dynamo-electric structure, a central dynamo-electric structure and an internal dynamo-electric structure, the central dynamo-electric structure comprising an exterior part and an interior part;

wherein the primary dynamo-electric unit comprises the external dynamo-electric structure and said exterior part of the central dynamo-electric structure; and

the secondary dynamo-electric unit comprises the internal dynamo-electric structure and said interior part of the central dynamo-electric structure;

the central dynamo-electric structure is fixed to the casing of the system without engaging in rotation;

the central dynamo-electric structure is coupled to the engine through the first clutch or the variable transmission unit;

the second clutch is provided between the central and the internal dynamo-electric structures;

the internal dynamo-electric structure is coupled to the load; and

the load coupled to the rotary part of the secondary dynamo-electric unit is selectively coupled to the input end of the variable transmission unit capable of exercising differential motion for both output ends capable of exercising differential motion of the differential variable transmission unit.