CN115675052A - Multi-mode hybrid device for heavy vehicle - Google Patents
Multi-mode hybrid device for heavy vehicle Download PDFInfo
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- CN115675052A CN115675052A CN202310002194.8A CN202310002194A CN115675052A CN 115675052 A CN115675052 A CN 115675052A CN 202310002194 A CN202310002194 A CN 202310002194A CN 115675052 A CN115675052 A CN 115675052A
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
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- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
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Abstract
The invention discloses a multi-mode hybrid device for a heavy vehicle, and belongs to the technical field of transmissions. The device comprises a first planet row, a second planet row, a third planet row, a first input shaft, a second input shaft, a first motor, a second motor, an engine, a connecting shaft, an output shaft, a first clutch, a second clutch, a third clutch, a fourth clutch, a first brake, a second brake and a third brake; the input power can be output at the output shaft in a power, power splitting or direct-drive mode through the matching control of the first clutch, the second clutch, the third clutch, the fourth clutch, the first brake, the second brake and the third brake. The multi-mode hybrid device can be driven in a pure electric or oil-electric hybrid mode, and can enable input power to be output at an output shaft in a power, power split or direct drive mode, so that different modes can be selected according to different working conditions, and the power performance and the economy can be better considered.
Description
Technical Field
The invention relates to the technical field of transmissions, in particular to a multi-mode hybrid device for a heavy vehicle.
Background
With the increasing requirements on environmental protection, new energy automobiles have become a new development trend. The new energy automobile mainly comprises a pure electric automobile, a fuel cell automobile and a hybrid electric automobile. For heavy trucks, on one hand, in order to meet the power requirements, the selected motor and engine are generally heavy and high in cost; on the other hand, in order to meet the endurance requirement, a large-capacity battery or a large-capacity oil tank is required. The hybrid power system is adopted in the field of heavy trucks, the requirements on the motor and the engine can be well lowered, energy consumption is reduced, and the endurance mileage is increased. At present, most of hybrid power systems adopted in the field of heavy trucks adopt technical routes such as series connection, parallel connection, series-parallel connection, power classification and the like, but the hybrid power systems based on the technical routes have certain limitations, are single in working mode and cannot well take the economical efficiency and the dynamic performance into consideration.
Disclosure of Invention
In order to solve the problems of single working mode and poor economic and dynamic compatibility of the conventional heavy truck hybrid power system, the invention provides a multi-mode hybrid device for a heavy truck, which comprises the following components:
a first planet row comprising a first sun gear, a first ring gear, a first planet gear, and a first planet carrier; the first sun gear is meshed with the first planet gears through external teeth, the first planet gears are installed on the first planet carrier, and the external teeth of the first planet gears are meshed with the internal teeth of the first gear ring;
a second planet row comprising a second sun gear, a second ring gear, a second planet gear, and a second planet carrier; the second sun gear is meshed with a plurality of second planet gears through external teeth, the second planet gears are arranged on the second planet carrier, and the external teeth of the second planet gears are meshed with the internal teeth of the second gear ring;
a third planet bar comprising a third sun gear, a third ring gear, a third planet gear, and a third planet carrier; the third sun gear is meshed with a plurality of third planet gears through external teeth, the third planet gears are installed on the third planet carrier, and the external teeth of the third planet gears are meshed with the internal teeth of the third gear ring;
the first sun gear is connected with the first motor through a first input shaft; the second sun gear is connected with a second motor through a second input shaft; the second planet carrier is connected with the third sun gear through a connecting shaft; the first planet carrier is connected with the second ring gear; the output shaft is connected with the third planet carrier; the first clutch is arranged between the engine and the second motor; a second clutch is disposed between the first carrier and the first ring gear; the third clutch is arranged between the first gear ring and the second planet carrier; a fourth clutch is disposed between the third carrier and the third ring gear; a first brake is disposed between the first carrier and the housing; a second brake is provided between the first ring gear and the housing; a third brake is provided between the third ring gear and the housing; the power input from the first input shaft and the second input shaft can be output at the output shaft in a power mode, a power splitting mode or a direct drive mode through the cooperative control of the first clutch, the second clutch, the third clutch, the fourth clutch, the first brake, the second brake and the third brake.
The invention also provides another multi-mode hybrid device for a heavy vehicle, which comprises:
a first planet row comprising a first sun gear, a first ring gear, a first planet gear, and a first planet carrier; the first sun gear is meshed with the plurality of first planet gears through external teeth, the first planet gears are arranged on the first planet carrier, and the external teeth of the first planet gears are meshed with the internal teeth of the first gear ring;
a second planet row comprising a second sun gear, a second ring gear, a second planet gear, and a second planet carrier; the second sun gear is meshed with a plurality of second planet gears through external teeth, the second planet gears are arranged on the second planet carrier, and the external teeth of the second planet gears are meshed with the internal teeth of the second gear ring;
a third planet row including a third sun gear, a third ring gear, a third planet gear, and a third planet carrier; the third sun gear is meshed with a plurality of third planet gears through external teeth, the third planet gears are installed on the third planet carrier, and the external teeth of the third planet gears are meshed with the internal teeth of the third gear ring;
the first sun gear is connected with a first motor through a first input shaft; the second sun gear is connected with a second motor through a second input shaft; the second planet carrier is connected with the third sun gear through a connecting shaft; the first planet carrier is connected with the second ring gear; the output shaft is connected with the third planet carrier; the first clutch is arranged between the engine and the second motor; a second clutch is disposed between the first sun gear and the first carrier; the third clutch is arranged between the first gear ring and the second planet carrier; a fourth clutch is disposed between the third carrier and the third ring gear; a first brake is disposed between the first carrier and the housing; a second brake is provided between the first ring gear and the housing; a third brake is provided between the third ring gear and the housing; the power input from the first input shaft and the second input shaft can be output at the output shaft in a power mode, a power splitting mode or a direct-drive mode through the cooperative control of the first clutch, the second clutch, the third clutch, the fourth clutch, the first brake, the second brake and the third brake.
The present invention also provides another multi-mode hybrid device for a heavy vehicle, comprising:
a first planet row comprising a first sun gear, a first ring gear, a first planet gear, and a first planet carrier; the first sun gear is meshed with the plurality of first planet gears through external teeth, the first planet gears are arranged on the first planet carrier, and the external teeth of the first planet gears are meshed with the internal teeth of the first gear ring;
a second planet row comprising a second sun gear, a second ring gear, a second planet gear and a second planet carrier; the second sun gear is meshed with a plurality of second planet gears through external teeth, the second planet gears are arranged on the second planet carrier, and the external teeth of the second planet gears are meshed with the internal teeth of the second gear ring;
a third planet row including a third sun gear, a third ring gear, a third planet gear, and a third planet carrier; the third sun gear is meshed with a plurality of third planet gears through external teeth, the third planet gears are installed on the third planet carrier, and the external teeth of the third planet gears are meshed with the internal teeth of the third gear ring;
the first sun gear is connected with the first motor through a first input shaft; the second sun gear is connected with a second motor through a second input shaft; the second planet carrier is connected with the third sun gear through a connecting shaft; the first planet carrier is connected with the second ring gear; the output shaft is connected with the third planet carrier; the first clutch is arranged between the engine and the second motor; the second clutch is arranged between the second sun gear and the second planet carrier; the third clutch is arranged between the first gear ring and the second planet carrier; a fourth clutch is disposed between the third carrier and the third ring gear; a first brake is disposed between the first carrier and the housing; a second brake is provided between the first ring gear and the housing; a third brake is provided between the third ring gear and the housing; the power input from the first input shaft and the second input shaft can be output at the output shaft in a power mode, a power splitting mode or a direct-drive mode through the cooperative control of the first clutch, the second clutch, the third clutch, the fourth clutch, the first brake, the second brake and the third brake.
The present invention also provides another multi-mode hybrid device for a heavy vehicle, comprising:
a first planet row comprising a first sun gear, a first ring gear, a first planet gear, and a first planet carrier; the first sun gear is meshed with the plurality of first planet gears through external teeth, the first planet gears are arranged on the first planet carrier, and the external teeth of the first planet gears are meshed with the internal teeth of the first gear ring;
a second planet row comprising a second sun gear, a second ring gear, a second planet gear, and a second planet carrier; the second sun gear is meshed with a plurality of second planet gears through external teeth, the second planet gears are arranged on the second planet carrier, and the external teeth of the second planet gears are meshed with the internal teeth of the second gear ring;
a third planet row including a third sun gear, a third ring gear, a third planet gear, and a third planet carrier; the third sun gear is meshed with a plurality of third planet gears through external teeth, the third planet gears are installed on the third planet carrier, and the external teeth of the third planet gears are meshed with the internal teeth of the third gear ring;
the first sun gear is connected with the first motor through a first input shaft; the second sun gear is connected with a second motor through a second input shaft; the second planet carrier is connected with the third sun gear through a connecting shaft; the first planet carrier is connected with the second ring gear; the output shaft is connected with the third planet carrier; the first clutch is arranged between the engine and the second motor; a second clutch is disposed between the second planet carrier and the second ring gear; the third clutch is arranged between the first gear ring and the second planet carrier; a fourth clutch is disposed between the third carrier and the third ring gear; a first brake is disposed between the first carrier and the housing; a second brake is provided between the first ring gear and the housing; a third brake is provided between the third ring gear and the housing; the power input from the first input shaft and the second input shaft can be output at the output shaft in a power mode, a power splitting mode or a direct drive mode through the cooperative control of the first clutch, the second clutch, the third clutch, the fourth clutch, the first brake, the second brake and the third brake.
The present invention also provides another multi-mode hybrid device for a heavy vehicle, comprising:
a first planet row comprising a first sun gear, a first ring gear, a first planet gear, and a first planet carrier; the first sun gear is meshed with the plurality of first planet gears through external teeth, the first planet gears are arranged on the first planet carrier, and the external teeth of the first planet gears are meshed with the internal teeth of the first gear ring;
a second planet row comprising a second sun gear, a second ring gear, a second planet gear, and a second planet carrier; the second sun gear is meshed with a plurality of second planet gears through external teeth, the second planet gears are arranged on the second planet carrier, and the external teeth of the second planet gears are meshed with the internal teeth of the second gear ring;
a third planet row including a third sun gear, a third ring gear, a third planet gear, and a third planet carrier; the third sun gear is meshed with a plurality of third planet gears through external teeth, the third planet gears are installed on the third planet carrier, and the external teeth of the third planet gears are meshed with the internal teeth of the third gear ring;
the first sun gear is connected with a first motor through a first input shaft; the second sun gear is connected with a second motor through a second input shaft; the second planet carrier is connected with the third sun gear through a connecting shaft; the first planet carrier is connected with the second ring gear; the output shaft is connected with the third planet carrier; the first clutch is arranged between the engine and the second motor; a second clutch is disposed between the second sun gear and the second ring gear; the third clutch is arranged between the first gear ring and the second planet carrier; a fourth clutch is disposed between the third carrier and the third ring gear; a first brake is disposed between the first carrier and the housing; a second brake is provided between the first ring gear and the housing; a third brake is provided between the third ring gear and the housing; the power input from the first input shaft and the second input shaft can be output at the output shaft in a power mode, a power splitting mode or a direct drive mode through the cooperative control of the first clutch, the second clutch, the third clutch, the fourth clutch, the first brake, the second brake and the third brake.
The multi-mode hybrid device for heavy vehicles (such as trucks and engineering vehicles) provided by the invention can be driven not only in a pure electric mode, but also in an oil-electricity hybrid mode, so that input power can be output at an output shaft in a power and power split or direct drive mode, and different modes can be selected according to different working conditions, thereby realizing better consideration of power performance and economy.
Drawings
Fig. 1 is a schematic structural diagram of a multi-mode hybrid device for a heavy-duty vehicle according to embodiment 1 of the present invention;
fig. 2 is a schematic structural diagram of a multi-mode hybrid device for a heavy-duty vehicle according to embodiment 2 of the present invention;
FIG. 3 is a schematic structural diagram of a multi-mode hybrid device for a heavy-duty vehicle according to embodiment 3 of the present invention;
FIG. 4 is a schematic structural diagram of a multi-mode hybrid device for a heavy-duty vehicle according to embodiment 4 of the present invention;
FIG. 5 is a schematic structural diagram of a multi-mode hybrid device for a heavy-duty vehicle according to embodiment 5 of the present invention;
fig. 6 is a structural diagram of an operating principle of the multi-mode hybrid device for a heavy vehicle according to embodiment 1 of the present invention when the output shaft outputs in the pure electric low-speed power mode;
fig. 7 is a structural diagram of an operating principle of the multi-mode hybrid device for a heavy vehicle according to embodiment 1 of the present invention when the output shaft outputs in a pure electric high-speed gear power mode;
fig. 8 is a structural diagram of an operating principle of the multi-mode hybrid device for a heavy vehicle provided in embodiment 1 of the present invention when the output shaft outputs in the pure low-speed power splitting mode;
fig. 9 is a structural diagram of an operating principle of the multi-mode hybrid device for a heavy vehicle according to embodiment 1 of the present invention when the output shaft outputs in the pure electric high-speed power split mode;
fig. 10 is a structural diagram of a working principle of the multi-mode hybrid device for a heavy vehicle provided in embodiment 1 of the present invention when the output shaft outputs in a pure electric low-speed direct drive mode;
fig. 11 is a structural diagram of a working principle of the multi-mode hybrid device for a heavy vehicle provided in embodiment 1 of the present invention in a pure electric high-speed direct drive mode at the output of an output shaft;
fig. 12 is a structural diagram of an operation principle of the multi-mode hybrid device for a heavy vehicle according to embodiment 1 of the present invention when the multi-mode hybrid device is output from an output shaft in an oil-electric hybrid low-speed power mode;
fig. 13 is a structural view of an operating principle of the multi-mode hybrid device for a heavy vehicle provided in embodiment 1 of the present invention when the multi-mode hybrid device is output from an output shaft in an oil-electric hybrid high-speed gear power mode;
fig. 14 is a structural diagram of an operation principle of the multi-mode hybrid device for a heavy vehicle according to embodiment 1 of the present invention when the output shaft outputs in the oil-electric hybrid low-speed power split mode;
fig. 15 is a structural diagram of an operating principle of the multi-mode hybrid device for a heavy vehicle according to embodiment 1 of the present invention when the multi-mode hybrid device is output from an output shaft in an oil-electric hybrid high-speed power split mode;
fig. 16 is a structural diagram of an operating principle of the multi-mode hybrid device for a heavy vehicle according to embodiment 1 of the present invention in an output from an output shaft in an oil-electric hybrid low-speed direct drive mode;
fig. 17 is a structural view of an operation principle of the multi-mode hybrid device for a heavy vehicle according to embodiment 1 of the present invention when the output shaft outputs in the hybrid high-speed direct drive mode.
Detailed Description
The technical solution of the present invention is further described below with reference to the accompanying drawings and examples.
Example 1
Referring to fig. 1, an embodiment of the present invention provides a multi-mode hybrid device for a heavy vehicle, including:
a first planet row 1, the first planet row 1 comprising a first sun gear 11, a first ring gear 12, a first planet gear 13 and a first planet carrier 14; the first sun gear 11 is meshed with a plurality of first planet gears 13 through external teeth, the first planet gears 13 are arranged on a first planet carrier 14, and the external teeth of the first planet gears 13 are meshed with the internal teeth of the first gear ring 12;
a second planetary row 2, the second planetary row 2 comprising a second sun gear 21, a second ring gear 22, a second planet gear 23 and a second planet carrier 24; the second sun wheel 21 is meshed with a plurality of second planet wheels 23 through external teeth, the second planet wheels 23 are arranged on a second planet carrier 24, and the external teeth of the second planet wheels 23 are meshed with the internal teeth of a second gear ring 22;
a third planetary row 3 including a third sun gear 31, a third ring gear 32, third planetary gears 33, and a third carrier 34; the third sun gear 31 is engaged with a plurality of third planetary gears 33 through external teeth, the third planetary gears 33 are installed on a third planet carrier 34, and the external teeth of the third planetary gears 33 are engaged with the internal teeth of the third ring gear 32;
the first sun gear 11 is connected to the first motor 51 through the first input shaft 41; the second sun gear 21 is connected with a second motor 52 through a second input shaft 42; the second carrier 24 is connected to the third sun gear 31 via a connecting shaft 43; the first carrier 14 is connected with the second ring gear 22; the output shaft 44 is connected with the third carrier 34; the first clutch C1 is provided between the engine 7 and the second motor 52; the second clutch C2 is disposed between the first carrier 14 and the first ring gear 12; the third clutch C3 is disposed between the first ring gear 12 and the second carrier 24; the fourth clutch C4 is disposed between the third carrier 34 and the third ring gear 32; the first brake B1 is disposed between the first carrier 14 and the housing 9; the second brake B2 is provided between the first ring gear 12 and the housing 9; the third brake B3 is provided between the third ring gear 32 and the housing 9.
In a specific application, one end of the second input shaft 42 is connected to the second motor 52, and the other end of the second input shaft 42 passes through the first motor 51, the first input shaft 41 and the first sun gear 11 and then is connected to the second sun gear 21.
Example 2
Referring to fig. 2, the multi-mode hybrid device for a heavy vehicle provided in this embodiment is different from embodiment 1 only in that: the second clutch C2 of the present embodiment is disposed between the first sun gear 11 and the first carrier 14. In addition, other technical solutions related to this embodiment are the same as those in embodiment 1, and thus the description of this embodiment is omitted.
Example 3
Referring to fig. 3, the multi-mode hybrid device for a heavy-duty vehicle according to the present embodiment is different from embodiment 1 only in that: the second clutch C2 of the present embodiment is disposed between the second sun gear 21 and the second carrier 24. In addition, other technical solutions related to this embodiment are the same as those in embodiment 1, and thus the description of this embodiment is omitted.
Example 4
Referring to fig. 4, the multi-mode hybrid device for a heavy-duty vehicle according to the present embodiment is different from embodiment 1 only in that: the second clutch C2 of the present embodiment is disposed between the second carrier 24 and the second ring gear 22. In addition, other technical solutions related to this embodiment are the same as those of embodiment 1, and therefore, detailed description thereof is omitted.
Example 5
Referring to fig. 5, the multi-mode hybrid device for a heavy vehicle provided in this embodiment is different from embodiment 1 only in that: the second clutch C2 of the present embodiment is disposed between the second sun gear 21 and the second ring gear 22. In addition, other technical solutions related to this embodiment are the same as those in embodiment 1, and thus the description of this embodiment is omitted.
In the above-described embodiments 1 to 5, the power input from the first input shaft 41 and the second input shaft 42 can be output to the output shaft 44 in the power mode, the power split mode, or the direct drive mode by the engagement control of the first clutch C1, the second clutch C2, the third clutch C3, the fourth clutch C4, the first brake B1, the second brake B2, and the third brake B3. The power modes comprise a pure electric low-speed gear power mode, a pure electric high-speed gear power mode, an oil-electric hybrid low-speed gear power mode and an oil-electric hybrid high-speed gear power mode; the power distribution mode comprises a pure electric low-speed gear power distribution mode, a pure electric high-speed gear power distribution mode, an oil-electric hybrid low-speed gear power distribution mode and an oil-electric hybrid high-speed gear power distribution mode; the direct-drive mode comprises a pure electric low-speed gear direct-drive mode, a pure electric high-speed gear direct-drive mode, an oil-electric hybrid low-speed gear direct-drive mode and an oil-electric hybrid high-speed gear direct-drive mode. The working principle of the multi-mode hybrid device provided by the embodiment of the present invention is further described below by taking embodiment 1 as an example.
From the structural schematic diagram shown in fig. 1, it can be seen that the multi-mode hybrid device according to the embodiment of the present invention can be driven not only in a pure electric mode but also in a hybrid oil-electric mode, and both of the two driving modes can enable input power to be output at an output shaft in a power mode, a power split mode or a direct drive mode, so that different modes can be selected according to different working conditions, thereby achieving better consideration of power performance and economy, and the specific description is as follows:
1. pure electric mode drive: in the case of the pure electric drive, the first clutch C1 is disengaged and the engine 7 does not participate in the operation.
1) Pure electric low-speed gear power mode
Referring to fig. 1 and 6, at the time of output of the output shaft in the electric low-speed power mode, the first clutch C1 is disengaged, the second clutch C2 is disengaged, the third clutch C3 is engaged, the fourth clutch C4 is disengaged, the first brake B1 is engaged, the second brake B2 is disengaged, and the third brake B3 is engaged; the first planet carrier 14 is braked by the first brake B1, the first planet row 1 plays a role in reducing speed and increasing torque, the power of the first motor 51 is input through the first sun gear 11, and the power of the first gear ring 12 is output; the second ring gear 22 is braked by the first brake B1, the second planet carrier 2 plays a role in reducing speed and increasing torque, the power of the second motor 52 is input through the second sun gear 21, and the power of the second planet carrier 24 is output; the first ring gear 12 and the second planet carrier 24 are connected through a third clutch C3 to form resultant force and output through the second planet carrier 24; the third ring gear 32 is braked by a third brake B3, the third planet carrier 3 plays a role in speed reduction and torque increase, the third sun gear 31 is input, the third planet carrier 34 is output, the third planet carrier 34 is connected with an output shaft 44, and the output shaft 44 outputs a resultant force of power of the first motor 51 and power of the second motor 52. The pure electric low-speed gear power mode is suitable for the low-speed starting stage of the heavy-duty vehicle, avoids the low quick-acting rate of the engine, and makes full use of the advantage of high low-speed torque of the motor.
2) Pure electric high-speed gear power mode
Referring to fig. 1 and 7, when the output shaft outputs in the electric-only high-speed power mode, the first clutch C1 is disengaged, the second clutch C2 is disengaged, the third clutch C3 is engaged, the fourth clutch C4 is engaged, the first brake B1 is engaged, the second brake B2 is disengaged, and the third brake B3 is disengaged; the first planet carrier 14 is braked by the first brake B1, the first planet carrier 1 plays a role in reducing speed and increasing torque, the power of the first motor 51 is input through the first sun gear 11, and the power of the first gear ring 12 is output; the second ring gear 22 is braked by the first brake B1, the second planet carrier 2 plays a role in reducing speed and increasing torque, the power of the second motor 52 is input through the second sun gear 21, and the power of the second planet carrier 24 is output; the first ring gear 12 and the second planet carrier 24 are connected through a third clutch C3, and a resultant force is formed and output through the second planet carrier 24; the third carrier 34 and the third ring gear 32 are connected by the fourth clutch C4, the third planetary gear set 3 is locked, the speed ratio is 1, the third sun gear 31 is input, the third carrier 34 is output, the third carrier 34 is connected with the output shaft 44, and the output shaft 44 outputs the resultant force of the powers of the first motor 51 and the second motor 52. Compared with the pure electric low-speed power mode, the pure electric high-speed power mode is driven by two motors, and is different in that the speed ratio of a third planet row is 1, so that the pure electric high-speed power mode is suitable for a low-speed driving stage after a heavy vehicle starts, has the advantage of high low-speed torque of the motor, and has good acceleration overtaking performance.
3) Pure electric low-speed gear power distribution mode
Referring to fig. 1 and 8, at the output of the output shaft in the electric low-speed power split mode, the first clutch C1 is disengaged, the second clutch C2 is disengaged, the third clutch C3 is disengaged, the fourth clutch C4 is disengaged, the first brake B1 is disengaged, the second brake B2 is engaged, and the third brake B3 is engaged; the first gear ring 12 is braked by the second brake B2, the first planet row 1 plays a role in reducing speed and increasing torque, the power of the first motor 51 is input through the first sun gear 11, and the power of the first planet carrier 14 is output; since the first carrier 14 and the second ring gear 22 are the same member, the power of the first motor 51 is reduced and increased in torque by the first planetary gear set 1, and is transmitted to the second ring gear 22 of the second planetary gear set 2; the second planet carrier 2 has a power splitting function, the power of the second motor 52 is transmitted to the second sun gear 21, the power of the first motor 51 is transmitted to the second ring gear 22, and resultant force is formed and output on the second planet carrier 24; the third ring gear 32 is braked by a third brake B3, the third planet carrier 3 plays a role in reducing speed and increasing torque, the third sun gear 31 inputs the third planet carrier 34 outputs the third planet carrier 34, the third planet carrier 34 is connected with the output shaft 44, and the output shaft 44 outputs the resultant force of the power of the first motor 51 and the power of the second motor 52. The pure electric low-gear power splitting mode is suitable for a heavy vehicle low-speed operation stage, the double motors are driven together, the first motor 51 is mainly used for speed regulation, and the second motor 52 can stably work in a high-efficiency area.
4) Pure electric high-speed gear power splitting mode
Referring to fig. 1 and 9, when the output shaft outputs in the electric-only high-speed power split mode, the first clutch C1 is disengaged, the second clutch C2 is disengaged, the third clutch C3 is disengaged, the fourth clutch C4 is engaged, the first brake B1 is disengaged, the second brake B2 is engaged, and the third brake B3 is disengaged; the first gear ring 12 is braked by the second brake B2, the first planet row 1 plays a role in reducing speed and increasing torque, the power of the first motor 51 is input through the first sun gear 11, and the power of the first planet carrier 14 is output; since the first carrier 14 and the second ring gear 22 are the same member, the power of the first motor 51 is reduced and increased in torque by the first planetary gear set 1, and is transmitted to the second ring gear 22 of the second planetary gear set 2; the second planet carrier 2 has a power splitting function, the power of the second motor 52 is transmitted to the second sun gear 21, the power of the first motor 51 is transmitted to the second ring gear 22, and resultant force is formed and output on the second planet carrier 24; the third planet carrier 34 and the third ring gear 32 are connected through a fourth clutch C4, the third planet carrier 3 is locked, the speed ratio is 1, the third sun gear 31 is input, the third planet carrier 34 is output, the third planet carrier 34 is connected with the output shaft 44, and the output shaft 44 outputs the resultant force of the power of the first motor 51 and the power of the second motor 52. Compared with the pure low-gear power splitting mode, the pure high-gear power splitting mode has the advantages that the speed ratio of the third planet row is changed into 1, the total speed ratio is further reduced, the pure high-gear power splitting mode is suitable for being driven by two motors together in the medium-speed running stage of heavy vehicles, the first motor 51 is mainly used for speed regulation, and the second motor 52 can stably work in a high-efficiency area.
5) Pure low-speed gear direct drive mode
Referring to fig. 1 and 10, when the output shaft outputs in the electric low-speed direct drive mode, the first clutch C1 is disengaged, the second clutch C2 is engaged, the third clutch C3 is engaged, the fourth clutch C4 is disengaged, the first brake B1 is disengaged, the second brake B2 is disengaged, and the third brake B3 is engaged; the first planet carrier 14 of the first planet row 1 is connected with the first gear ring 12 through the second clutch C2, the first planet row 1 is locked, and the speed ratio is 1; the second planet carrier 24 and the second ring gear 22 of the second planet row 2 are connected through the second clutch C2 and the third clutch C3, the second planet row 2 is locked, and the speed ratio is 1; the third ring gear 32 is braked by a third brake B3, the third planet carrier 3 plays a role in speed reduction and torque increase, the third sun gear 31 is input, the third planet carrier 34 is output, the third planet carrier 34 is connected with an output shaft 44, and the output shaft 44 outputs a resultant force of power of the first motor 51 and power of the second motor 52. The pure electric low-speed gear direct drive mode is suitable for heavy vehicles in a middle-speed running stage, the double motors drive together, and the vehicles can run to a higher speed without the motors having high rotating speed.
6) Pure electric high-speed gear direct drive mode
Referring to fig. 1 and 11, when the output shaft outputs in the electric-high-speed direct drive mode, the first clutch C1 is disengaged, the second clutch C2 is engaged, the third clutch C3 is engaged, the fourth clutch C4 is engaged, the first brake B1 is disengaged, the second brake B2 is disengaged, and the third brake B3 is disengaged; the first planet carrier 14 of the first planet row 1 is connected with the first gear ring 12 through the second clutch C2, the first planet row 1 is locked, and the speed ratio is 1; the second planet carrier 24 and the second ring gear 22 of the second planet row 2 are connected through the second clutch C2 and the third clutch C3, the second planet row 2 is locked, and the speed ratio is 1; the third planet carrier 34 is connected with the third ring gear 32 through the fourth clutch C4, the third planet row 3 is locked, and the speed ratio is 1; the third sun gear 31 inputs, the third planet carrier 34 outputs, the third planet carrier 34 is connected with the output shaft 44, and the output shaft 44 outputs the resultant force of the power of the first motor 51 and the power of the second motor 52. The pure electric high-speed gear direct drive mode has the total speed ratio of 1, is suitable for the high-speed driving stage of heavy vehicles, drives the double motors together, and enables the vehicles to drive to the highest speed without the need of the motors to have high rotating speed.
Table 1 below shows the states of the clutch and the brake in the 6 pure electric modes described above, where "o" represents engagement and "x" represents disengagement:
TABLE 1
2. Oil-electricity hybrid drive: in the case of hybrid drive, the first clutch C1 is engaged and the engine 7 is engaged.
1) Oil-electricity hybrid low-speed gear power mode
Referring to fig. 1 and 12, at the time of output of the output shaft in the hybrid low-speed power mode, the first clutch C1 is engaged, the second clutch C2 is disengaged, the third clutch C3 is engaged, the fourth clutch C4 is disengaged, the first brake B1 is engaged, the second brake B2 is disengaged, and the third brake B3 is engaged; the first clutch C1 is engaged, the engine 7 and the second motor 52 are connected together in series, and the second motor 52 can be selected to work together with the engine 7 in series to drive the second sun gear 21 together; alternatively, the second electric machine 52 may also be selectively stopped, the rotor of the second electric machine 52 is rotated only by the engine 7, and at this time, the second electric machine 52 operates as a generator, and the rotor of the second electric machine 52 is rotated by the engine 7 to generate power. In the low-speed starting stage of the heavy vehicle, a pure electric low-speed gear power mode is generally selected to be suitable, but when the electric quantity of a vehicle power battery is insufficient, the engine 7 needs to be involved in driving as early as possible, and the oil-electric hybrid low-speed gear power mode needs to be used.
2) Oil-electricity hybrid high-speed gear power mode
Referring to fig. 1 and 13, at the time of output of the output shaft in the hybrid electric-oil high speed power mode, the first clutch C1 is engaged, the second clutch C2 is disengaged, the third clutch C3 is engaged, the fourth clutch C4 is engaged, the first brake B1 is engaged, the second brake B2 is disengaged, and the third brake B3 is disengaged; the first clutch C1 is engaged, the engine 7 and the second electric machine 52 are connected in series, and the second electric machine 52 can be selectively operated in series with the engine 7 to jointly drive the second sun gear 21; alternatively, the second electric machine 25 may be stopped, the rotor of the second electric machine 52 is rotated only by the engine 7, and the second electric machine 52 is operated as a generator, and the rotor of the second electric machine 52 is rotated by the engine 7 to generate electricity. In the low-speed driving stage of the heavy vehicle, a pure electric high-speed gear power mode is generally selected to be suitable, but when the electric quantity of a vehicle power battery is insufficient, the engine 7 needs to be involved in driving as early as possible, and the oil-electric hybrid high-speed gear power mode needs to be used.
3) Oil-electricity hybrid low-speed gear power splitting mode
Referring to fig. 1 and 14, at the output of the output shaft in the electric-oil hybrid low speed power split mode, the first clutch C1 is engaged, the second clutch C2 is disengaged, the third clutch C3 is disengaged, the fourth clutch C4 is disengaged, the first brake B1 is disengaged, the second brake B2 is engaged, and the third brake B3 is engaged; the first clutch C1 is engaged, the engine 7 and the second electric machine 52 are connected in series, and the second electric machine 52 can optionally work in series with the engine 7 to jointly drive the second sun gear 21; alternatively, the second electric machine 52 may also be selectively stopped, the rotor of the second electric machine 52 is rotated only by the engine 7, and at this time, the second electric machine 52 operates as a generator, and the rotor of the second electric machine 52 is rotated by the engine 7 to generate power. The oil-electricity hybrid low-speed gear power splitting mode is suitable for a low-speed driving stage of a vehicle, the rotating speed of the engine 7 is stabilized in a high-efficiency area, the first motor 51 is used for regulating the speed, and when the power of the engine 7 is rich, the second motor 52 is driven to generate power to supplement the power for a power battery.
4) Oil-electricity hybrid high-speed gear power splitting mode
Referring to fig. 1 and 15, at the time of output of the output shaft in the electric-oil hybrid high-speed power split mode, the first clutch C1 is engaged, the second clutch C2 is disengaged, the third clutch C3 is disengaged, the fourth clutch C4 is engaged, the first brake B1 is disengaged, the second brake B2 is engaged, and the third brake B3 is disengaged; the first clutch C1 is engaged, the engine 7 and the second electric machine 52 are connected in series, and the second electric machine 52 can optionally work in series with the engine 7 to jointly drive the second sun gear 21; alternatively, the second electric machine 52 may also be selectively stopped, the rotor of the second electric machine 52 is rotated only by the engine 7, and at this time, the second electric machine 52 operates as a generator, and the rotor of the second electric machine 52 is rotated by the engine 7 to generate power. Compared with the oil-electricity hybrid high-speed power split mode, the speed ratio of the third planetary row is changed into 1, the total speed ratio is further reduced, the oil-electricity hybrid high-speed power split mode is suitable for being used in the middle-speed running stage of heavy vehicles, the engine 7 and the first motor 51 are driven together, the first motor 51 is mainly used for speed regulation, the rotating speed of the engine 7 can work stably in a high-efficiency area, and when the power of the engine 7 is rich, the second motor 52 is driven to generate power to supplement the power battery.
5) Oil-electricity hybrid low-speed gear direct-drive mode
Referring to fig. 1 and 16, when the output shaft outputs in the hybrid low-speed direct drive mode, the first clutch C1 is engaged, the second clutch C2 is engaged, the third clutch C3 is engaged, the fourth clutch C4 is disengaged, the first brake B1 is disengaged, the second brake B2 is disengaged, and the third brake B3 is engaged; the first clutch C1 is engaged, the engine 7 and the second motor 52 are connected in series, and the second motor 52 can be selected to work in series with the engine 7 to drive the second sun gear 21 together; alternatively, the second electric machine 52 may also be stopped, the rotor of the second electric machine 52 is rotated only by the engine 7, and at this time, the second electric machine 52 operates as a generator, and the rotor of the second electric machine 52 is rotated by the engine 7 to generate electricity. In the oil-electric hybrid low-speed gear direct drive mode, the total speed ratio is only the speed ratio of the third planet row for reducing speed and increasing torque, and the oil-electric hybrid low-speed gear direct drive mode is suitable for the medium-speed running stage of heavy vehicles, the engine 7 and the first motor 51 are driven together, and the engine and the motor can enable the vehicles to run to a higher speed without high rotating speed. When the engine 7 has a surplus of power, the second motor 52 is driven to generate electricity to supplement the power battery with electricity.
6) Oil-electricity hybrid high-speed gear direct drive mode
Referring to fig. 1 and 17, when the output shaft outputs in the hybrid electric high speed direct drive mode, the first clutch C1 is engaged, the second clutch C2 is engaged, the third clutch C3 is engaged, the fourth clutch C4 is engaged, the first brake B1 is disengaged, the second brake B2 is disengaged, and the third brake B3 is disengaged; the first clutch C1 is engaged, the engine 7 and the second motor 52 are connected in series, and the second motor 52 can be selected to work in series with the engine 7 to drive the second sun gear 21 together; alternatively, the second electric machine 52 may also be stopped, the rotor of the second electric machine 52 is rotated only by the engine 7, and at this time, the second electric machine 52 operates as a generator, and the rotor of the second electric machine 52 is rotated by the engine 7 to generate electricity. The oil-electric hybrid high-speed gear direct drive mode has the total speed ratio of 1, is suitable for the high-speed driving stage of heavy vehicles, can be directly driven by the engine 7 alone, or can be directly driven by the engine 7 and the first motor 51 or the engine 7, the first motor 51 and the second motor 52 together, and can drive the vehicle to the highest speed without the need of high rotating speed of the engine and the motors.
Table 2 below shows the states of the clutch and the brake in the 6 oil-electric hybrid modes described above, in which "∘" represents engagement and "x" represents disengagement:
TABLE 2
In conclusion, in the running process of the heavy vehicle, a pure electric low-speed power mode is selected in the starting stage, and the heavy vehicle is driven by double motors and has strong climbing capability; in the low-speed stage, a pure electric high-speed gear power mode is selected, and the two motors are used for driving, so that the accelerating and overtaking capacity is high; in the medium-speed stage, an oil-electricity hybrid high-speed gear power splitting mode is selected, the engine can be maintained at a high-efficiency rotating speed, the speed is regulated through the first motor, and the energy-saving effect is obvious; the high-speed stage can select an oil-electricity hybrid high-speed gear direct-drive mode and an engine direct-drive mode. When the oil-electricity hybrid mode is adopted, if the power of the engine is rich, the second motor can be driven to generate electricity.
It should be noted that: the multi-mode hybrid device provided in embodiments 2 to 5 can also enable the input power to be output at the output shaft in a power mode, a power split mode or a direct drive mode in a pure electric and oil-electric hybrid driving mode, and the working principle thereof is basically the same as that of embodiment 1, and therefore, the details are not repeated.
The multi-mode hybrid device for heavy vehicles (such as trucks and engineering vehicles) provided by the embodiment of the invention can be driven not only in a pure electric mode, but also in a hybrid oil-electricity mode, so that input power can be output at an output shaft in a power mode, a power splitting mode or a direct-drive mode, and different modes can be selected according to different working conditions, thereby realizing better consideration of power performance and economy.
The above-mentioned embodiments are intended to illustrate the objects, technical solutions and advantages of the present invention in further detail, and it should be understood that the above-mentioned embodiments are only exemplary embodiments of the present invention, and are not intended to limit the present invention, and any modifications, equivalents, improvements and the like made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (23)
1. A multi-mode hybrid device for a heavy vehicle, comprising:
a first planet row comprising a first sun gear, a first ring gear, a first planet gear, and a first planet carrier; the first sun gear is meshed with the plurality of first planet gears through external teeth, the first planet gears are arranged on the first planet carrier, and the external teeth of the first planet gears are meshed with the internal teeth of the first gear ring;
a second planet row comprising a second sun gear, a second ring gear, a second planet gear and a second planet carrier; the second sun gear is meshed with a plurality of second planet gears through external teeth, the second planet gears are arranged on the second planet carrier, and the external teeth of the second planet gears are meshed with the internal teeth of the second gear ring;
a third planet row including a third sun gear, a third ring gear, a third planet gear, and a third planet carrier; the third sun gear is meshed with a plurality of third planet gears through external teeth, the third planet gears are installed on the third planet carrier, and the external teeth of the third planet gears are meshed with the internal teeth of the third gear ring;
the first sun gear is connected with the first motor through a first input shaft; the second sun gear is connected with a second motor through a second input shaft; the second planet carrier is connected with the third sun gear through a connecting shaft; the first planet carrier is connected with the second ring gear; the output shaft is connected with the third planet carrier; the first clutch is arranged between the engine and the second motor; the second clutch is arranged between the first planet carrier and the first gear ring; the third clutch is arranged between the first gear ring and the second planet carrier; a fourth clutch is disposed between the third carrier and the third ring gear; a first brake is disposed between the first carrier and the housing; a second brake is provided between the first ring gear and the housing; a third brake is provided between the third ring gear and the housing; the power input from the first input shaft and the second input shaft can be output at the output shaft in a power mode, a power splitting mode or a direct drive mode through the cooperative control of the first clutch, the second clutch, the third clutch, the fourth clutch, the first brake, the second brake and the third brake.
2. The multi-mode hybrid device for a heavy-duty vehicle according to claim 1, wherein one end of the second input shaft is connected to the second motor, and the other end of the second input shaft passes through the first motor, the first input shaft, and the first sun gear and is connected to the second sun gear.
3. The multi-mode hybrid device for the heavy vehicle according to claim 2, wherein the power modes comprise a pure electric low-speed gear power mode, a pure electric high-speed gear power mode, an oil-electric hybrid low-speed gear power mode and an oil-electric hybrid high-speed gear power mode; the power distribution mode comprises a pure electric low-speed gear power distribution mode, a pure electric high-speed gear power distribution mode, an oil-electric hybrid low-speed gear power distribution mode and an oil-electric hybrid high-speed gear power distribution mode; the direct-drive mode comprises a pure electric low-speed gear direct-drive mode, a pure electric high-speed gear direct-drive mode, an oil-electricity hybrid low-speed gear direct-drive mode and an oil-electricity hybrid high-speed gear direct-drive mode.
4. The multi-mode hybrid device for a heavy-duty vehicle of claim 3, wherein said first clutch is disengaged, said second clutch is disengaged, said third clutch is engaged, said fourth clutch is disengaged, said first brake is engaged, said second brake is disengaged, and said third brake is engaged when output at said output shaft in an electric low-speed power mode.
5. The multi-mode hybrid device for a heavy-duty vehicle according to claim 3, wherein when outputting at said output shaft in a pure electric high gear power mode, said first clutch is disengaged, said second clutch is disengaged, said third clutch is engaged, said fourth clutch is engaged, said first brake is engaged, said second brake is disengaged, and said third brake is disengaged.
6. The multi-mode hybrid device for a heavy-duty vehicle according to claim 3, wherein said first clutch is disengaged, said second clutch is disengaged, said third clutch is disengaged, said fourth clutch is disengaged, said first brake is disengaged, said second brake is engaged, and said third brake is engaged when output at said output shaft in an electric-only low-speed power-split mode.
7. The multi-mode hybrid device for a heavy-duty vehicle according to claim 3, wherein said first clutch is disengaged, said second clutch is disengaged, said third clutch is disengaged, said fourth clutch is engaged, said first brake is disengaged, said second brake is engaged, and said third brake is disengaged when output at said output shaft in an electric-only high-speed power-split mode.
8. The multi-mode hybrid device for a heavy-duty vehicle according to claim 3, wherein said first clutch is disengaged, said second clutch is engaged, said third clutch is engaged, said fourth clutch is disengaged, said first brake is disengaged, said second brake is disengaged, and said third brake is engaged when outputting at said output shaft in a pure low-speed direct drive mode.
9. The multi-mode hybrid device for a heavy-duty vehicle according to claim 3, wherein said first clutch is disengaged, said second clutch is engaged, said third clutch is engaged, said fourth clutch is engaged, said first brake is disengaged, said second brake is disengaged, and said third brake is disengaged when outputting at said output shaft in a pure electric high gear direct drive mode.
10. The multi-mode hybrid device for a heavy-duty vehicle according to claim 3, wherein said first clutch is engaged, said second clutch is disengaged, said third clutch is engaged, said fourth clutch is disengaged, said first brake is engaged, said second brake is disengaged, and said third brake is engaged when output at said output shaft in an electric-oil hybrid low-speed power mode.
11. The multi-mode hybrid device for a heavy-duty vehicle according to claim 3, wherein the first clutch is engaged, the second clutch is disengaged, the third clutch is engaged, the fourth clutch is engaged, the first brake is engaged, the second brake is disengaged, and the third brake is disengaged when output at the output shaft in the hybrid electric-oil high-speed power mode.
12. The multi-mode hybrid device for a heavy-duty vehicle according to claim 3, wherein said first clutch is engaged, said second clutch is disengaged, said third clutch is disengaged, said fourth clutch is disengaged, said first brake is disengaged, said second brake is engaged, and said third brake is engaged when output at said output shaft in an electric-oil hybrid low-speed power split mode.
13. The multi-mode hybrid device for heavy-duty vehicle according to claim 3, wherein said first clutch is engaged, said second clutch is disengaged, said third clutch is disengaged, said fourth clutch is engaged, said first brake is disengaged, said second brake is engaged, and said third brake is disengaged when output at said output shaft in an electric-oil hybrid high-speed power split mode.
14. The multi-mode hybrid drive unit for a heavy-duty vehicle as set forth in claim 3, wherein said first clutch is engaged, said second clutch is engaged, said third clutch is engaged, said fourth clutch is disengaged, said first brake is disengaged, said second brake is disengaged, and said third brake is engaged when outputted at said output shaft in the hybrid low-speed direct drive mode.
15. The multi-mode hybrid drive unit for a heavy-duty vehicle as set forth in claim 3, wherein said first clutch is engaged, said second clutch is engaged, said third clutch is engaged, said fourth clutch is engaged, said first brake is disengaged, said second brake is disengaged, and said third brake is disengaged when outputted at said output shaft in the hybrid electric high speed direct drive mode.
16. A multi-mode hybrid device for a heavy vehicle, comprising:
a first planet row comprising a first sun gear, a first ring gear, a first planet gear, and a first planet carrier; the first sun gear is meshed with the plurality of first planet gears through external teeth, the first planet gears are arranged on the first planet carrier, and the external teeth of the first planet gears are meshed with the internal teeth of the first gear ring;
a second planet row comprising a second sun gear, a second ring gear, a second planet gear and a second planet carrier; the second sun gear is meshed with a plurality of second planet gears through external teeth, the second planet gears are arranged on the second planet carrier, and the external teeth of the second planet gears are meshed with the internal teeth of the second gear ring;
a third planet bar comprising a third sun gear, a third ring gear, a third planet gear, and a third planet carrier; the third sun gear is meshed with a plurality of third planet gears through external teeth, the third planet gears are installed on the third planet carrier, and the external teeth of the third planet gears are meshed with the internal teeth of the third gear ring;
the first sun gear is connected with the first motor through a first input shaft; the second sun gear is connected with a second motor through a second input shaft; the second planet carrier is connected with the third sun gear through a connecting shaft; the first planet carrier is connected with the second ring gear; the output shaft is connected with the third planet carrier; the first clutch is arranged between the engine and the second motor; a second clutch is disposed between the first sun gear and the first carrier; the third clutch is arranged between the first gear ring and the second planet carrier; a fourth clutch is disposed between the third carrier and the third ring gear; a first brake is disposed between the first carrier and the housing; a second brake is provided between the first ring gear and the housing; a third brake is provided between the third ring gear and the housing; the power input from the first input shaft and the second input shaft can be output at the output shaft in a power mode, a power splitting mode or a direct-drive mode through the cooperative control of the first clutch, the second clutch, the third clutch, the fourth clutch, the first brake, the second brake and the third brake.
17. The multi-mode hybrid device for a heavy-duty vehicle according to claim 16, wherein one end of the second input shaft is connected to the second motor, and the other end of the second input shaft passes through the first motor, the first input shaft, and the first sun gear and is connected to the second sun gear.
18. A multi-mode hybrid device for a heavy vehicle, comprising:
a first planet row comprising a first sun gear, a first ring gear, a first planet gear, and a first planet carrier; the first sun gear is meshed with the first planet gears through external teeth, the first planet gears are installed on the first planet carrier, and the external teeth of the first planet gears are meshed with the internal teeth of the first gear ring;
a second planet row comprising a second sun gear, a second ring gear, a second planet gear, and a second planet carrier; the second sun gear is meshed with a plurality of second planet gears through external teeth, the second planet gears are arranged on the second planet carrier, and the external teeth of the second planet gears are meshed with the internal teeth of the second gear ring;
a third planet bar comprising a third sun gear, a third ring gear, a third planet gear, and a third planet carrier; the third sun gear is meshed with a plurality of third planet gears through external teeth, the third planet gears are installed on the third planet carrier, and the external teeth of the third planet gears are meshed with the internal teeth of the third gear ring;
the first sun gear is connected with a first motor through a first input shaft; the second sun gear is connected with a second motor through a second input shaft; the second planet carrier is connected with the third sun gear through a connecting shaft; the first planet carrier is connected with the second ring gear; the output shaft is connected with the third planet carrier; the first clutch is arranged between the engine and the second motor; a second clutch is disposed between the second sun gear and the second carrier; the third clutch is arranged between the first gear ring and the second planet carrier; a fourth clutch is disposed between the third carrier and the third ring gear; a first brake is disposed between the first carrier and the housing; a second brake is provided between the first ring gear and the housing; a third brake is provided between the third ring gear and the housing; the power input from the first input shaft and the second input shaft can be output at the output shaft in a power mode, a power splitting mode or a direct-drive mode through the cooperative control of the first clutch, the second clutch, the third clutch, the fourth clutch, the first brake, the second brake and the third brake.
19. The multi-mode hybrid device for a heavy-duty vehicle according to claim 18, wherein one end of said second input shaft is connected to said second motor, and the other end of said second input shaft passes through said first motor, said first input shaft and said first sun gear and is connected to said second sun gear.
20. A multi-mode hybrid device for a heavy vehicle, comprising:
a first planet row comprising a first sun gear, a first ring gear, a first planet gear, and a first planet carrier; the first sun gear is meshed with the plurality of first planet gears through external teeth, the first planet gears are arranged on the first planet carrier, and the external teeth of the first planet gears are meshed with the internal teeth of the first gear ring;
a second planet row comprising a second sun gear, a second ring gear, a second planet gear and a second planet carrier; the second sun gear is meshed with a plurality of second planet gears through external teeth, the second planet gears are arranged on the second planet carrier, and the external teeth of the second planet gears are meshed with the internal teeth of the second gear ring;
a third planet row including a third sun gear, a third ring gear, a third planet gear, and a third planet carrier; the third sun gear is meshed with a plurality of third planet gears through external teeth, the third planet gears are installed on the third planet carrier, and the external teeth of the third planet gears are meshed with the internal teeth of the third gear ring;
the first sun gear is connected with a first motor through a first input shaft; the second sun gear is connected with a second motor through a second input shaft; the second planet carrier is connected with the third sun gear through a connecting shaft; the first planet carrier is connected with the second ring gear; the output shaft is connected with the third planet carrier; the first clutch is arranged between the engine and the second motor; a second clutch is disposed between the second carrier and the second ring gear; the third clutch is arranged between the first gear ring and the second planet carrier; a fourth clutch is disposed between the third carrier and the third ring gear; a first brake is disposed between the first carrier and the housing; a second brake is provided between the first ring gear and the housing; a third brake is provided between the third ring gear and the housing; the power input from the first input shaft and the second input shaft can be output at the output shaft in a power mode, a power splitting mode or a direct drive mode through the cooperative control of the first clutch, the second clutch, the third clutch, the fourth clutch, the first brake, the second brake and the third brake.
21. The multi-mode hybrid device for a heavy-duty vehicle according to claim 20, wherein one end of said second input shaft is connected to said second motor, and the other end of said second input shaft passes through said first motor, said first input shaft and said first sun gear and is connected to said second sun gear.
22. A multi-mode hybrid device for a heavy vehicle, comprising:
a first planet row comprising a first sun gear, a first ring gear, a first planet gear, and a first planet carrier; the first sun gear is meshed with the plurality of first planet gears through external teeth, the first planet gears are arranged on the first planet carrier, and the external teeth of the first planet gears are meshed with the internal teeth of the first gear ring;
a second planet row comprising a second sun gear, a second ring gear, a second planet gear, and a second planet carrier; the second sun gear is meshed with a plurality of second planet gears through external teeth, the second planet gears are arranged on the second planet carrier, and the external teeth of the second planet gears are meshed with the internal teeth of the second gear ring;
a third planet row including a third sun gear, a third ring gear, a third planet gear, and a third planet carrier; the third sun gear is meshed with a plurality of third planet gears through external teeth, the third planet gears are installed on the third planet carrier, and the external teeth of the third planet gears are meshed with the internal teeth of the third gear ring;
the first sun gear is connected with the first motor through a first input shaft; the second sun gear is connected with a second motor through a second input shaft; the second planet carrier is connected with the third sun gear through a connecting shaft; the first planet carrier is connected with the second ring gear; the output shaft is connected with the third planet carrier; the first clutch is arranged between the engine and the second motor; a second clutch is disposed between the second sun gear and the second ring gear; the third clutch is arranged between the first gear ring and the second planet carrier; a fourth clutch is disposed between the third carrier and the third ring gear; a first brake is disposed between the first carrier and the housing; a second brake is provided between the first ring gear and the housing; a third brake is provided between the third ring gear and the housing; the power input from the first input shaft and the second input shaft can be output at the output shaft in a power mode, a power splitting mode or a direct drive mode through the cooperative control of the first clutch, the second clutch, the third clutch, the fourth clutch, the first brake, the second brake and the third brake.
23. The multi-mode hybrid device for a heavy-duty vehicle according to claim 22, wherein one end of said second input shaft is connected to said second motor, and the other end of said second input shaft passes through said first motor, said first input shaft and said first sun gear and is connected to said second sun gear.
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| US20050137042A1 (en) * | 2003-12-19 | 2005-06-23 | Schmidt Michael R. | Two-mode, compound-split, hybrid electro-mechanical transmission having four fixed ratios |
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| DE102012016664A1 (en) * | 2012-08-23 | 2014-02-27 | Daimler Ag | Multi-step reduction gearbox for hybrid car, has two planet pinion carriers and sun wheel permanently connected with one another in torque-proof manner, and planetary gear interlocked by shifting unit |
| CN107636348A (en) * | 2015-05-19 | 2018-01-26 | 腓特烈斯港齿轮工厂股份公司 | Speed changer for motor vehicle and the hybrid-drive power train including the speed changer |
| CN111497592A (en) * | 2020-06-02 | 2020-08-07 | 苏州亚太金属有限公司 | Novel hybrid power system and driving method thereof |
| CN111731089A (en) * | 2020-07-10 | 2020-10-02 | 王利英 | Two series-parallel type oil-electricity hybrid power driving devices suitable for commercial vehicle |
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| US20050137042A1 (en) * | 2003-12-19 | 2005-06-23 | Schmidt Michael R. | Two-mode, compound-split, hybrid electro-mechanical transmission having four fixed ratios |
| CN103429450A (en) * | 2011-03-15 | 2013-12-04 | 腓特烈斯港齿轮工厂股份公司 | Hybrid drive of motor vehicle |
| DE102012016664A1 (en) * | 2012-08-23 | 2014-02-27 | Daimler Ag | Multi-step reduction gearbox for hybrid car, has two planet pinion carriers and sun wheel permanently connected with one another in torque-proof manner, and planetary gear interlocked by shifting unit |
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