MULTI-MODE HYBRID POWER SYSTEM

Abstract

The present invention discloses a multi—mode hybrid power system. An output shaft of a first engine is connected to a main input shaft, an output shaft of a second engine is connected to an auxiliary input shaft, an output shaft of a second electric motor is connected to a first gear pair, and a first battery and a second. battery are connected in parallel and are connected to a first electric motor and the second electric motor. A.first switching shaft is connected to the main input shaft, the first switching shaft is connected to a first input shaft, a second switching shaft is connected to the auxiliary input shaft, the second switching shaft is connected to the first input shaft, a first middle shaft is connected to an output shaft of the first electric motor, and the first middle shaft is connected to the first input shaft.

Description

TECHNICAL FIELD [Ol] The present invention relates to the field of vehicle hybrid power technology, and particularly to a multimode hybrid power system. BACKGROUND ART

[02] The ePOWER. oilelectric hybrid. power technology, which adopts direct electric motor drive and uses an engine completely for power generation, has some problems in the practical application.

[03] If the engine is only used for power generation and does not participate in power output, so that the power output distribution can not be reasonable under all the driving conditions. The singleelectric motor drive provides limited power, and it is difficult to ensure the reliability of the vehicle's overall drive system; relying on a single electric motor for various complex working conditions of the vehicle increases the technical difficulty and cost of the electric motor.

[04] Therefore, there is no guarantee in the existing art for a reasonable power output distribution of the electric motor and for the reliability of singleelectric motor drive. SUMMARY

[05] The present invention provides a Hmltimode hybrid power system capable of satisfying various power demands and ensuring reliability of driving.

[06] In order to achieve the above object, the present invention provides the following solutions.

[07] The present invention provides a nmltimode hybrid power system, including:

[08] a first engine, where an output shaft of the first engine is connected to a main input shaft;

[09] a second engine, where an output shaft of the second engine is connected to an auxiliary input shaft;

[10] a first electric motor;

[11] a second electric motor, where an output shaft of the second electric motor is connected to a first gear pair;

[12] a first battery and a second battery, where the first battery and the second battery are connected in parallel and are connected to the first electric motor and the second electric motor;

[13] a first switching shaft, where the first switching shaft is connected to the main input shaft via a first torsional shock absorber, and the first switching shaft is connected to a first input shaft via a first switching gear pair;

[14] a second switching shaft, where the second switching shaft is connected to the auxiliary input shaft via a second torsional shock absorber, and the second switching shaft is connected to the first input shaft via a second switching gear pair;

[15] a first middle shaft, where the first middle shaft is connected to an output shaft of the first electric motor via a planetary gear pair, and the first middle shaft is selectively connected to the first input shaft via a first shifter;

[16] a second middle shaft, where the second middle shaft is connectable to the first middle shaft via a second gear pair;

[17] a system power output shaft, where the system power output shaft is connected to the second middle shaft via a third gear pair or a fourth gear pair;

[18] an engine shifter, where the engine shifter is provided on the first input shaft and is located between the first switching gear pair and the second switching gear pair, and is selectively engaged with gears of the first switching gear pair or the second switching gear pair;

[19] a second shifter, where the second shifter is provided on the second middle shaft and is located between the first gear pair and the second gear pair, and is engaged with gears of the first gear pair or the second gear pair; and

[20] a third shifter, where the third shifter is provided on the second middle shaft, and is located between the third gear pair and the fourth gear pair, engaging with gears of the third gear pair or the fourth gear pair, or is located at a middle position.

[21] The present invention achieves the following technical effects with respect to the existing art.

[22] 1n_the multimode hybrid power system provided by the present invention, the first engine and the second engine can be selected to participate in power generation and power output processes of the system at the same time, and the multioperating mode and nmltigear power output can be achieved through the cooperation of the plurality of different shifters and gear pairs, so as to meet various power demands and increase the scope of application. By providing the first electric motor and the second electric motor, during shifting of one electric motor, the other electric motor can ensure that the power is not interrupted during the shifting. By providing the first engine, the second engine, and the engine shifter, the switching operation of the first engine and the second engine can be achieved, so that when one engine fails, the other engine can operate normally to meet the demands of the system for power generation and power output. By providing the first battery and the second battery connected in parallel, the switching operation of the first battery and the second battery can be achieved, so that when one battery fails, the other battery can operate normally to meet the demands of the system for power consumption and power output. BRIEF DESCRIPTION OF THE DRAWINGS

[23] FIG. 1 is a schematic diagram of a multimode hybrid power system provided by the present invention. DETAILED DESCRIPTION OF THE EMBODIMENTS

[24] As shown in FIG. 1, the present invention provides a multimode hybrid power system, including:

[25] a first engine 1, where an output shaft of the first engine 1 is connected to a main input shaft 2;

[26] a second engine 3, where an output shaft of the second engine 3 is connected to an auxiliary input shaft 4;

[27] a first electric motor 5;

[28] a second electric motor 6, where an output shaft of the second electric motor 6 is connected to a first gear pair;

[29] a first battery 7 and a second battery 8, where the first battery 7 and the second battery 8 are connected in parallel and are connected to the first electric motor 5 and the second electric motor 6;

[30] a first switching shaft 9, where the first switching shaft 9 is connected to the main input shaft 2 via a first torsional shock absorber 10, and the first switching shaft 9 is connected. to a first input shaft 11 via a first switching gear pair;

[31] a second switching shaft 12, where the second switching shaft 12 is connected to the auxiliary input shaft 4 via a second torsional shock absorber 13, and the second switching shaft 12 is connected to the first input shaft 11 via a second switching gear pair;

[32] a first middle shaft 14, where the first middle shaft 14 is connected to an output shaft of the first electric motor 5 via a planetary gear pair, and the first middle shaft 14 is selectively connected to the first input shaft 11 via a first shifter 15;

[33] a second middle shaft 16, where the second middle shaft 16 is connectable to the first middle shaft 14 via a second gear pair;

[34] a system power output shaft 17, where the system power output shaft 17 is connected to the second middle shaft 16 via a third gear pair or a fourth gear pair;

[35] an engine shifter 18, where the engine shifter 18 is provided on the first input shaft 11 and is located between the first switching gear pair and the second switching gear pair, and is selectively engaged with gears of the first switching gear pair or the second switching gear pair on both sides;

[36] a second shifter 19, where the second shifter 19 is provided on the second middle shaft 16 and is located between the first gear pair and the second gear pair, and is engaged with gears of the first gear pair or the second gear pair on both sides; and

[37] a third shifter 20, where the third shifter 20 is provided on the second middle shaft 16, and is located between the third gear pair and the fourth gear pair, engaging with gears of the third gear pair or the fourth gear pair on both sides, or is located at a middle position.

[38] In the multimode hybrid power system provided by the present invention, the first engine 1 and the second engine 3 can be selected to participate in power generation and power output processes of the system at the same time, and the multioperating mode and multigear power output can be achieved through the cooperation of the plurality of different shifters and gear pairs, so as to meet various power demands and increase the scope of application. By providing the first electric motor 5 and the second electric motor 6, during shifting of one electric motor, the other electric motor can ensure that the power is not interrupted during the shifting. By providing the first engine 1, the second engine 3, and the engine shifter 18, the switchingoperation of the first engine 1 and the second engine 3 can be achieved, so that when one engine fails, the other engine can operate normally to meet the demands of the system for power generation and power output. By providing the first battery 7 and the second battery 8 connected in parallel, the switching operation of the first battery 7 and the second battery 8 can be achieved, so that when one battery fails, the other battery can operate normally to meet the demands of the system for power consumption and power output.

[39] The first switching gear pair includes a first switching driving gear 21 and a first switching driven gear 22 which are correspondingly engaged, the first switching driving gear 21 movably sleeves the first input shaft 11, and the first switching driven gear 22 is fixed on the first switching shaft 9. The second switching gear pair includes a second switching driving gear 23 and a second switching driven gear 24 which are correspondingly engaged, the second switching driving gear 23 movably sleeves the first input shaft 11, and the second switching driven gear 24 is fixed on the second switching shaft 12. The engine shifter 18 is provided on the first input shaft 11 and is located between the first switching driving gear 21 and the second switching driving gear 23 to be selectively engaged with the first switching driving gear 21 or the second switching driving gear 23 on both sides.

[40] In different modes, the first electric motor 5 and the second electric motor 6 obtain driving power from the first battery 7 or the second battery 8, respectively or simultaneously, or supply charging power to the first battery 7 or the second battery 8, respectively or simultaneously.

[41] The planetary gear pair includes a sun gear 25, a planet gear 26, and a gear ring 27; the sun gear 25 is fixed to the output shaft of the first electric motor 5, the planet gear 26 surrounds the outer periphery of the sun gear 25 and is engaged with the sun gear 25, and is fixed to the first middle shaft 14, and the gear ring 27 is fixed to an outer component.

[42] The first gear pair includes a first driving gear 28 and a first driven gear 29 which are correspondingly engaged, the first driving gear 28 is fixed to the output shaft of the second electric motor 6, and the first driven gear 29 is fixed to the second middle shaft 16. The second gear pair includes a second driving gear 30 and a second driven gear 31 which are correspondingly engaged, the second driving gear 30 is fixed to the first middle shaft 14, and the second driven gear 31 movably sleeves the second middle shaft 16. The third gear pair includes a third driving gear 32 and a third driven gear 33 which are correspondingly engaged, the third. driving' gear 32 movably sleeves the second middle shaft 16, and the third driven gear 33 is fixed to the system power output shaft 17. The fourth gear pair includes a fourth driving gear 34 and a fourth driven gear 35 which are correspondingly engaged, the fourth driving gear 34 movably sleeves the second middle shaft 16, and the fourth driven gear 35 is fixed to the system power output shaft 17.

[43] The output shaft of the first electric motor 5 and the output shaft of the second electric motor 6 sleeve the first middle shaft 14.

[44] The first shifter 15 uses an electromagnetic clutch; the second shifter 19 is located between the first driven gear 29 and the second driven gear 31 to be selectively engaged with the first driven gear 29 or the second driven gear 31 on both sides; the third shifter 20 is located between the third driving gear 32 and the fourth driving gear 34 to be selectively engaged with the third driving gear 32 or the fourth driving gear 34 on both sides, or located at a middle position.

[45] Realizable modes of the system:

[46] Stopstart: the first battery 7 or the second battery 8 drives the first electric motor 5 to start the first engine 1 or the second engine 3, the first shifter 15 is engaged, the second shifter 19 is engaged with the gears of the first gear pair, and the third shifter 20 is located at the middle position.

[47] Parking power generation: the first engine 1 or the second engine 3 charges the first battery 7 or the second battery 8 via the first electric motor 5, the first shifter 15 is engaged, the second shifter 19 is engaged with the gears of the first gear pair, and the third shifter 20 is located at the middle position.

[48] The second electric motor 6 driving independently: when in low gear, the first shifter 15 is disengaged, the second shifter 19 is engaged with the gears of the first gear pair, and the third shifter 20 is engaged with the gears of the third gear pair; when in high gear, the first shifter 15 is disengaged, the second shifter 19 is engaged with the gears of the first gear pair, and the third shifter 20 is engaged with the gears of the fourth gear pair.

[49] Dual electric motor driving: when at a low speed, the first shifter 15 is disengaged, the second shifter 19 is engaged with the gears of the second gear pair, and the third shifter 20 is engaged with the gears of the third gear pair; when at a high speed, the first shifter 15 is disengaged, the second shifter 19 is engaged with the gears of the second gear pair, and the third shifter 20 is engaged with the gears of the fourth gear pair.

[50] The second electric motor 6 driving, while the first electric motor 5 starting the first engine 1 or the second engine 3, or the first engine 1 or the second engine 3 generating power: the first shifter 15 is engaged, the second shifter 19 is engaged with the gears of the first gear pair, and the third shifter 20 is engaged with the gears of the third gear pair or the fourth gear pair.

[51] The second electric motor 6 in parallel with the first engine 1 or the second engine 3 for hybrid power: when the battery has a high. SOC value, the first shifter 15 is engaged, the second shifter 19 is engaged with the gears of the second gear pair, and the third shifter 20 is engaged with the gears of the third gear pair or the fourth gear pair; when the battery has a low SOC value, the first engine 1 or the second engine 3 charges the first battery 7 or the second battery 8 via the first electric motor 5, the first shifter 15 is engaged, the second shifter 19 is engaged with the gears of the second gear pair, and the third shifter 20 is engaged with the gears of the third gear pair or the fourth gear pair.

[52] The first engine 1 or the second engine 3 directly driving: when the battery has a high SOC value, the first shifter 15 is engaged, the second shifter 19 is engaged with the gears of the second gear pair, and the third shifter 20 is engaged with the gears of the third gear pair or the fourth gear pair; when the battery has a low SOC value, the first electric motor 5 generates power, the first shifter 15 is engaged, the second shifter 19 is engaged with the gears of the second gear pair, and the third shifter 20 is engaged with the gears of the third gear pair or the fourth gear pair.

[53] Deceleration. braking: the second. electric motor 6 generates power, the first shifter 15 is disengaged, the second shifter 19 is engaged with the gears of the first gear pair, and the third shifter 20 is engaged with the gears of the third gear pair or the fourth gear pair; the first electric motor 5 generates power together with the second electric motor 6, the first shifter 15 is disengaged, the second shifter 19 is engaged with the gears of the second gear pair, and the third shifter 20 is engaged with the gears of the third gear pair or the fourth gear pair; the second electric motor 6 generates power, the first engine 1 or the second engine 3 brakes, the first shifter 15 is engaged, the second shifter 19 is engaged with the gears of the second gear pair, and the third shifter 20 is engaged with the gears of the third gear pair or the fourth gear pair.

[54] Reversing: the second electric motor 6 drives, the first shifter 15 is disengaged, the second shifter 19 is engaged with the gears of the first gear pair, and the third shifter 20 is engaged with the gears of the third gear pair; the first electric motor 5 and the second electric motor 6 drives together, the first shifter 15 is disengaged, the cond shifter 19 is engaged with the gears of the second ar pair, and the third shifter 20 is engaged with the ars of the third gear pair; the second electric motor 6 ives, the first electric motor 5 generates power, the rst shifter 15 is engaged, the second shifter 19 is engaged th the gears of the first gear pair, and the third shifter is engaged with the gears of the third gear pair.

Claims

1. A multimode hybrid energy system, comprising: a first motor, where an output shaft of the first motor is connected to a main input shaft; a second motor, where an output shaft of the second motor is connected to an additional input shaft; a first electric motor; a second electric motor, where an output shaft of the The second electric motor is connected to a first gear pair; a first battery and a second battery, where the The first battery and the second battery are parallel. bonded and are connected to the first electric motor and the second electric motor; a first shift shaft, where the first shift shaft is connected to the main input shaft via a first torsional shock damper, and where the first shift shaft is connected to a first input shaft via a first pair of shifting gears; a second shift shaft, where the second shift shaft is connected to the additional input shaft via a second transistor side shock absorber, and to which the second shift shaft is connected with the first input shaft via a second pair of shifting gears; a first center axis, where the first center axis is far connected to an output shaft of the first electric motor via a planetary gear pair, and where the first center shaft selec The tief is connected to the first input axis via a first adjuster; a second center axis, where the second center axis connects bar is connected to the first center shaft via a second gear pair; a system power output axis, where the system The output shaft is connected to the second center axis via a third gear pair or a fourth gear pair; a motor adjuster, where the motor adjuster is for visible at the first entrance axis and situated between the first scale the Kelt gear pair and the second shifting gear pair are located, and selectively engaging on both sides with gears of the first shifting gear pair or the second shifting tooth wheel pair; a second adjuster, where the second adjuster is provided on the second center axis and situated between the first gear pair and the second gear pair are located, and on both sides in engagement with gears of the first tooth wheel pair or the second gear pair; and a third adjuster, where the third adjuster is provided on the second center axis, and situated between the third gear pair and the fourth gear pair is located, on both sides in engagement with gears of the third gear pair or the fourth gear pair, or to a center position is located OOO FIG. 1

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