Non-plug-in hybrid powertrain and vehicle

Abstract

The present application provides a non-plug-in hybrid system and vehicle, which relates to the field of power systems, including an engine, a clutch, a first motor, a first reduction mechanism, a second motor, a second reduction mechanism, a third shift mechanism and a drive axle; wherein the output shaft of the engine is connected to one end of the clutch, the other end of the clutch is connected to the drive axle through the third shift mechanism, the input shaft of the third shift mechanism is connected to the clutch, the output shaft of the third shift mechanism is also connected to the first motor through the first reduction mechanism, and the third shift mechanism is also connected to the second motor through the second reduction mechanism; the third shift mechanism is used to realize or disconnect the connection between the clutch and the second reduction mechanism, and the third shift mechanism is also used to realize or disconnect the connection between the clutch and the drive axle. The present application can realize multiple switching modes of oil-electric hybrid power and can be applied to various road conditions.

Description

Technical Field

[0001] The present application relates to the field of power systems, and in particular to a non-plug-in hybrid power system and a vehicle. Background Art

[0002] With the advancement of the country's dual carbon policy, the pressure on commercial vehicles to reduce carbon emissions is increasing. The number of commercial vehicles is large, and it is difficult to improve the thermal efficiency of small engines. Therefore, the pressure on commercial vehicles to reduce carbon emissions is relatively high.

[0003] The effective technology routes for reducing carbon emissions in commercial vehicles include zero-carbon engines, hybrid power, and pure electric vehicles. Zero-carbon engines are still immature, and the research focus is on high-horsepower engines. The pure electric technology route has a large battery weight, which greatly reduces the effective load during use. On the other hand, the pure electric technology route has a range that is difficult to meet the needs of users. Hybrid vehicles are mostly single series-parallel hybrid systems, and their adaptability to road conditions is too poor.

[0004] In view of the above-mentioned defects, there is an urgent need for a non-plug-in hybrid power system and vehicle that can realize multiple switching modes of oil-electric hybrid power and can be suitable for various road conditions. Summary of the invention

[0005] The present application provides a non-plug-in hybrid power system and vehicle, which can realize multiple switching modes of oil-electric hybrid power and can be applicable to various road conditions.

[0006] In a first aspect, the present application provides a non-plug-in hybrid system, including an engine, a clutch, a first motor, a first reduction mechanism, a second motor, a second reduction mechanism, a third shift mechanism, and a drive axle;

[0007] The output shaft of the engine is connected to one end of the clutch, the other end of the clutch is connected to the drive axle through the third shifting mechanism, the input shaft of the third shifting mechanism is connected to the clutch, the output shaft of the third shifting mechanism is also connected to the first motor through the first reduction mechanism, and the third shifting mechanism is also connected to the second motor through the second reduction mechanism;

[0008] The third shifting mechanism is used to realize or disconnect the connection between the clutch and the second reduction mechanism, and the third shifting mechanism is also used to realize or disconnect the connection between the clutch and the drive axle.

[0009] In one possible design, the third gear shift mechanism includes a first gear, a second gear and an intermediate gear. The intermediate gear of the third gear shift mechanism is connected to the input shaft of the third gear shift mechanism, and the second gear of the third gear shift mechanism is connected to the output shaft of the third gear shift mechanism; the first gear of the third gear shift mechanism is connected to the second reduction mechanism.

[0010] In a possible design, the system further includes a first transmission mechanism, the output shaft of the third shift mechanism is connected to the first reduction mechanism through the first transmission mechanism, and the first transmission mechanism is a gear pair structure;

[0011] The first transmission mechanism has a third gear and a fourth gear that mesh with each other; the third gear is coaxially connected to the output end of the third shifting mechanism, the fourth gear is coaxially connected to one end of the planetary frame of the first reduction mechanism, and one end of the sun gear of the first reduction mechanism is coaxially connected to the first motor.

[0012] In a possible design, the output shaft of the third shift mechanism is also connected to the first reduction mechanism through the fourth shift mechanism and the fifth transmission mechanism in sequence; the output shaft of the third shift mechanism is also connected to the drive axle through the fourth shift mechanism.

[0013] In a possible design, the fourth shift mechanism includes a first gear and a second gear, and the fourth shift mechanism includes a first gear and a second gear that can engage according to the gears. The output shaft of the third shift mechanism is connected to the drive shaft of the drive axle through the second gear of the fourth shift mechanism, and the first gear of the fourth shift mechanism is connected to the first reduction mechanism through the fifth transmission mechanism.

[0014] In a possible design, the fifth transmission mechanism is a gear structure, and the first reduction mechanism is a planetary reducer;

[0015] The fifth transmission mechanism is engaged with the first gear of the fourth shift mechanism, the fifth transmission mechanism is coaxially connected to one end of the planetary carrier in the planetary reducer, and one end of the sun gear in the planetary reducer is coaxially connected to the first motor.

[0016] In a possible design, the system further includes a second transmission mechanism, the third shift mechanism is sequentially connected to the second transmission mechanism and the second reduction mechanism through a first gear, the second transmission mechanism is a gear pair structure, and the second reduction mechanism is a planetary reducer;

[0017] The second transmission mechanism includes a first gear and a second gear that are meshed with each other, the first gear is meshed with the first gear of the third shift mechanism, the second gear is coaxially connected to one end of the planetary carrier of the second reduction mechanism, and one end of the sun gear of the second reduction mechanism is coaxially fixed to the second motor.

[0018] In a possible design, the system further includes a speed shifting mechanism, and the output shaft of the third shifting mechanism is further connected to the drive axle through the speed shifting mechanism, and the speed shifting mechanism is a two-speed transmission or a four-speed transmission.

[0019] In a possible design, the system further includes a battery, and the first motor and the second motor are both connected to the battery.

[0020] In a second aspect, the present application provides a vehicle comprising the above-mentioned non-plug-in hybrid power system.

[0021] The present application provides a non-plug-in hybrid system and vehicle, including an engine, a clutch, a first motor, a first reduction mechanism, a second motor, a second reduction mechanism, a third shift mechanism and a drive axle; the output shaft of the engine is connected to one end of the clutch, the other end of the clutch is connected to the drive axle through the third shift mechanism, the input shaft of the third shift mechanism is connected to the clutch, the output shaft of the third shift mechanism is also connected to the first motor through the first reduction mechanism, and the third shift mechanism is also connected to the second motor through the second reduction mechanism; the third shift mechanism is used to realize or disconnect the connection between the clutch and the second reduction mechanism, and the third shift mechanism is also used to realize or disconnect the connection between the clutch and the drive axle. The following technical effects are achieved: the present application can realize the pure electric mode of commercial vehicles, the series model of power generation and driving in parallel, and the parallel mode of dual power source hybrid through the cooperation of the clutch and the third shift mechanism. The present application has a compact structure and can be applied to a variety of working conditions and a variety of models to meet the user's use needs for commercial vehicles; it can reduce no-load losses, while ensuring the power of the system, and taking into account fuel economy, and improving fuel saving rate. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0023] Figure 1 A schematic diagram of a non-plug-in hybrid system provided in an embodiment of the present application Figure 1 ;

[0024] Figure 2 A schematic diagram of a non-plug-in hybrid system provided in an embodiment of the present application Figure 2 ;

[0025] Figure 3 A schematic diagram of a non-plug-in hybrid system provided in an embodiment of the present application Figure 3 ;

[0026] Figure 4 A schematic diagram of a non-plug-in hybrid system provided in an embodiment of the present application Figure 4 .

[0027] The above drawings have shown clear embodiments of the present application, which will be described in more detail later. These drawings and text descriptions are not intended to limit the scope of the present application in any way, but to illustrate the concept of the present application to those skilled in the art by referring to specific embodiments.

[0028] Description of reference numerals:

[0029] 101-engine; 102-clutch; 104-second transmission mechanism; 105-second reduction mechanism; 106-second motor; 107-drive shaft; 108-first transmission mechanism; 109-first reduction mechanism; 110-first motor; 111-drive axle; 112-third shift mechanism;

[0030] 202-fifth transmission mechanism; 203 fourth shifting mechanism;

[0031] 300-two-speed gearbox; 301-fifth gear shift mechanism; 302-third transmission mechanism;

[0032] 400 - fourth gear gearbox; 401 - sixth gear shift mechanism; 402 - seventh gear shift mechanism; 403 - fourth transmission mechanism. DETAILED DESCRIPTION

[0033] In order to make the purpose, technical solution and advantages of the embodiments of the present invention clearer, the technical solution in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0034] In the description of this application, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, or it can be an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0035] In the description of the present application, it should be understood that the terms used include "upper", "lower", "front", "back", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc. to indicate orientation or positional relationships. They are based on the orientation or positional relationships shown in the accompanying drawings and are only for the convenience of describing the equipment or method of the present application. They are not used to indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present application.

[0036] In the specification and claims of the present application and the above-mentioned drawings, the terms "first", "second", and "third" are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence. It should be understood that the objects used in this way can be interchanged where appropriate, so that the embodiments of the present application described herein can be implemented in an order other than those illustrated or described herein, for example.

[0037] In addition, the described terms "include" and "have" and any variations thereof are intended to cover non-exclusive inclusions; for example, a process, method, system, product, or maintenance tool that includes a series of steps or units is not necessarily limited to those steps or units explicitly listed, but also includes other steps or units not explicitly listed or inherent to these processes, methods, products, or maintenance tools.

[0038] In the existing technology, the operating conditions of commercial vehicles are relatively complex. Under complex operating conditions, the hybrid powertrain system can play a higher advantage and significantly improve the fuel saving rate. In addition, hybrid vehicles do not have the anxiety of driving range. The power density of the entire powertrain system is high, so it will not affect the load. A single series hybrid system or parallel system has poor road adaptability and low fuel saving rate.

[0039] The present application provides a non-plug-in hybrid power system and a vehicle thereof, aiming to solve the above technical problems of the prior art.

[0040] The technical solution of the present application and how the technical solution of the present application solves the above-mentioned technical problems are described in detail below with specific embodiments. The following specific embodiments can be combined with each other, and the same or similar concepts or processes may not be repeated in some embodiments. The embodiments of the present application will be described below in conjunction with the accompanying drawings.

[0041] Figure 1 A schematic diagram of a non-plug-in hybrid system provided in an embodiment of the present application Figure 1 ;like Figure 1As shown, the system provided in this embodiment includes an engine 101, a clutch 102, a first motor 110, a first reduction mechanism 109, a second motor 106, a second reduction mechanism 105, a third shift mechanism 112 and a drive axle 111; wherein

[0042] The output shaft of the engine 101 is connected to one end of the clutch 102, and the other end of the clutch 102 is connected to the drive axle 111 through the third gear shifting mechanism 112. The input shaft of the third gear shifting mechanism 112 is connected to the clutch 102, and the output shaft of the third gear shifting mechanism 112 is also connected to the first motor 110 through the first reduction mechanism 109, and the third gear shifting mechanism 112 is also connected to the second motor 106 through the second reduction mechanism 105; the third gear shifting mechanism 112 is used to realize or disconnect the connection between the clutch 102 and the second reduction mechanism 105, and the third gear shifting mechanism 112 is also used to realize or disconnect the connection between the clutch 102 and the drive axle 111.

[0043] Furthermore, the third gear shift mechanism 112 includes a first gear, a second gear and an intermediate gear, the intermediate gear is connected to the input shaft of the third gear shift mechanism 112, and the second gear is connected to the output shaft of the third gear shift mechanism 112; the first gear of the third gear shift mechanism 112 is connected to the second reduction mechanism 105.

[0044] Specifically, the first gear position and the middle gear position of the third gear shift mechanism 112 can be linked together through gear meshing, and the second gear position and the middle gear position of the third gear shift mechanism 112 can be linked together through gear meshing.

[0045] Specifically, the third gear shift mechanism 112 includes a first gear, a second gear and an intermediate gear. The first gear is: the first gear and the intermediate gear are in contact with each other to achieve linkage. The second gear is: the second gear and the intermediate gear are in contact with each other to achieve linkage. The intermediate gear is: the intermediate gear is not in contact with other gears.

[0046] Specifically, according to the cooperation between the third shift mechanism 112 and the clutch 102, the embodiment of the present application can realize the following modes:

[0047] The clutch 102 is disconnected and the third shift mechanism 112 is placed in the middle gear: the first motor 110 is working, and the torque is amplified by the first reduction mechanism 109 and then transmitted to the drive shaft 107 of the drive axle 111 for driving the vehicle wheels, thereby realizing a pure electric mode of single-motor drive.

[0048] The clutch 102 is engaged and the third shift mechanism 112 is placed in the first gear: on the one hand, the engine 101 is working, and the battery is charged through the clutch 102, the third shift mechanism 112, the second reduction mechanism 105 and the second motor 106 in sequence; on the other hand, the first motor 110 amplifies the torque through the first reduction mechanism 109 and transmits it to the drive shaft 107 of the drive axle 111 for driving the vehicle wheels. In the series mode, the battery charging and the vehicle driving can be carried out simultaneously, thereby realizing the series mode.

[0049] The clutch 102 is engaged and the third shift mechanism 112 is placed in the second gear: on the one hand, the engine 101 is working, and the wheel transmission is carried out through the clutch 102, the third shift mechanism 112, and the drive shaft 107 in sequence; on the other hand, the first motor 110 is working, and the wheel transmission is realized through the first reduction mechanism 109 to the drive axle 111; the parallel mode of the engine 101 and the first motor 110 as driving power sources is realized, and when multiple power sources are driven, the drive shaft 107 receives power as a torque combining unit.

[0050] The system provided by the embodiment of the present application includes an engine 101, a clutch 102, a first motor 110, a first reduction mechanism 109, a second motor 106, a second reduction mechanism 105, a third shift mechanism 112 and a drive axle 111; the output shaft of the engine 101 is connected to one end of the clutch 102, the other end of the clutch 102 is connected to the drive axle 111 through the third shift mechanism 112, the input shaft of the third shift mechanism 112 is connected to the clutch 102, the output shaft of the third shift mechanism 112 is also connected to the first motor 110 through the first reduction mechanism 109, and the third shift mechanism 112 is also connected to the second motor 106 through the second reduction mechanism 105; the third shift mechanism 112 is used to realize or disconnect the connection between the clutch 102 and the second reduction mechanism 105, and the third shift mechanism 112 is also used to realize or disconnect the connection between the clutch 102 and the drive axle 111. The following technical effects can be achieved:

[0051] The embodiment of the present application can provide a non-plug-in hybrid system, which can realize the pure electric mode of commercial vehicles, the series model of power generation and driving in parallel, and the parallel mode of dual power source hybrid according to the cooperation between the clutch 102 and the third shift mechanism 112. The system provided by this embodiment has a compact structure and can be applied to a variety of working conditions and a variety of vehicle models to meet the user's demand for commercial vehicles; it can reduce no-load loss, while ensuring the power of the system, and taking into account fuel economy, thereby improving the fuel saving rate.

[0052] Figure 2 A schematic diagram of a non-plug-in hybrid system provided in an embodiment of the present application Figure 2 ;like Figure 2As shown, the system includes an engine 101, a clutch 102, a first motor 110, a first reduction mechanism 109, a second motor 106, a second reduction mechanism 105, a third shift mechanism 112, a speed change mechanism and a drive axle 111; wherein

[0053] The output shaft of the engine 101 is connected to one end of the clutch 102, and the other end of the clutch 102 is connected to the speed change mechanism and the drive axle 111 in sequence through the third shifting mechanism 112. The input shaft of the third shifting mechanism 112 is connected to the clutch 102, and the output shaft of the third shifting mechanism 112 is also connected to the first motor 110 through the first reduction mechanism 109, and the third shifting mechanism 112 is also connected to the second motor 106 through the second reduction mechanism 105; the third shifting mechanism 112 is used to realize or disconnect the connection between the clutch 102 and the second reduction mechanism 105, and the third shifting mechanism 112 is also used to realize or disconnect the connection between the clutch 102 and the speed change mechanism.

[0054] Furthermore, the third gear shift mechanism 112 includes a first gear, a second gear and an intermediate gear, the intermediate gear is connected to the input shaft of the third gear shift mechanism 112, and the second gear is connected to the output shaft of the third gear shift mechanism 112; the first gear of the third gear shift mechanism 112 is connected to the first reduction mechanism 109.

[0055] Specifically, the first gear position and the middle gear position of the third gear shift mechanism 112 can be linked together through gear meshing, and the second gear position and the middle gear position of the third gear shift mechanism 112 can be linked together through gear meshing.

[0056] Specifically, the third gear shift mechanism 112 includes a first gear, a second gear and an intermediate gear. The first gear is: the first gear and the intermediate gear are in contact with each other to achieve linkage. The second gear is: the second gear and the intermediate gear are in contact with each other to achieve linkage. The intermediate gear is: the intermediate gear is not in contact with other gears.

[0057] Furthermore, the system also includes a second transmission mechanism 104, and the third shift mechanism 112 is connected to the second transmission mechanism 104 and the second reduction mechanism 105 in sequence through the first gear, and the second reduction mechanism 105 is a planetary reducer.

[0058] Specifically, the second transmission mechanism 104 includes a first gear and a second gear that are meshed with each other; the first gear is meshed with the first gear of the third shift mechanism 112, the second gear is coaxially connected to one end of the planetary carrier of the second reduction mechanism 105, and one end of the sun gear of the second reduction mechanism 105 is coaxially fixed to the second motor 106.

[0059] Furthermore, the system also includes a first transmission mechanism 108, and the output shaft of the third shift mechanism 112 is connected to the output end of the first reduction mechanism 109 through the first transmission mechanism 108, and the first reduction mechanism 109 is a planetary reducer.

[0060] Specifically, the first transmission mechanism 108 includes a third gear and a fourth gear that are meshed with each other; the third gear is coaxially connected to the output end of the third shift mechanism 112, the fourth gear is coaxially connected to one end of the planetary carrier of the first reduction mechanism 109, and one end of the sun gear in the first reduction mechanism 109 is coaxially connected to the first motor 110.

[0061] Optionally, the speed change mechanism may be a two-speed gearbox 300 or a four-speed gearbox 400. The four-speed gearbox 400 can be applied to 4×2 and 6×4 medium and heavy trucks.

[0062] As an embodiment, the speed change mechanism is connected to the drive shaft 107 via a universal joint.

[0063] As an embodiment, the speed change mechanism is a double intermediate shaft gearbox.

[0064] like Figure 2 The figure shows a two-speed gearbox 300, which includes a fifth gear shifting mechanism 301 and a third transmission mechanism 302; the fifth gear shifting mechanism 301 includes a first gear, a second gear and an intermediate gear, the first gear of the fifth gear shifting mechanism 301 can be meshed and linked with the intermediate gear of the fifth gear shifting mechanism 301 through a gear set, and the second gear of the fifth gear shifting mechanism 301 can be meshed and linked with the intermediate gear of the fifth gear shifting mechanism 301 through a gear set; the first gear of the fifth gear shifting mechanism 301 and the second gear of the fifth gear shifting mechanism 301 can also be linked with each other through the third transmission mechanism 302.

[0065] Furthermore, the first gear position of the fifth gear shift mechanism 301 is connected to the output shaft of the third gear shift mechanism 112 , and the middle gear position of the fifth gear shift mechanism 301 is connected to the drive axle 111 .

[0066] Specifically, the first gear of the two-speed gearbox 300 is the second gear that fits the middle gear, that is, the third shift mechanism 112 is directly connected to the drive shaft 107 through the first gear of the fifth shift mechanism 301, the third transmission mechanism 302, the second gear, and the middle gear in sequence, which is a low gear.

[0067] Specifically, the second gear of the two-speed gearbox 300 is the first gear and the middle gear are aligned, that is, the third shift mechanism 112 is linked with the drive shaft 107 through the first gear and the middle gear of the fifth shift mechanism 301 in sequence, which is a high gear.

[0068] As an embodiment, the first motor 110 and the second motor 106 are high-speed motors.

[0069] As an embodiment, the third shift mechanism 112 is a fork shift mechanism.

[0070] Optionally, the output shaft of the first motor 110 , the output shaft of the second motor 106 and the drive shaft 107 are arranged in parallel.

[0071] Optionally, the drive axle 111 is a single drive axle 111 or a dual mechanical drive axle 111, so that the present embodiment can be applicable to different vehicle models.

[0072] Furthermore, the first motor 110 and the second motor 106 are both connected to a battery.

[0073] The system provided in the embodiment of the present application can achieve the following technical effects:

[0074] The system provided by the present application can realize a pure electric mode of single-motor drive: when the clutch 102 is disconnected and the third shift mechanism 112 is placed in the middle gear, the first motor 110 can amplify the torque through the first reduction mechanism 109 and then transmit it to the drive shaft 107 of the drive axle 111 through the first transmission mechanism 108 and the speed change mechanism, so as to drive the vehicle wheels;

[0075] The system provided by the present application can realize a series mode of driving and charging: when the clutch 102 is engaged and the third shift mechanism 112 is placed in the first gear, on the one hand, the engine 101 can charge the battery through the clutch 102, the third shift mechanism 112, the second transmission mechanism 104, the second reduction mechanism 105 and the second motor 106 in sequence; on the other hand, the first motor 110 amplifies the torque through the first reduction mechanism 109 and then transmits it to the drive shaft 107 of the drive axle 111 through the first transmission mechanism 108 and the speed change mechanism in sequence for driving the vehicle wheels. In the series mode, battery charging and vehicle driving can be realized simultaneously;

[0076] Through the system provided by the present application, a parallel mode of multi-power source drive can be realized: when the clutch 102 is engaged and the third shift mechanism 112 is placed in the second gear, on the one hand, the engine 101 transmits power through the clutch 102, the third shift mechanism 112, the speed change mechanism, and the drive shaft 107 in sequence; on the other hand, the first motor 110 works and transmits power to the wheels through the first reduction mechanism 109, the speed change mechanism and the drive axle 111 in sequence; thereby realizing a parallel mode in which the engine 101 and the first motor 110 are used as driving power sources.

[0077] The embodiment of the present application can achieve speed shifting under different power source modes through the speed shifting mechanism. The speed shifting function is not affected by the power source mode, and speed shifting and forward movement can be achieved under the above different power source modes.

[0078] In summary, the system provided in this embodiment has a compact structure and can be applied to a variety of working conditions and a variety of vehicle models, including light commercial vehicles, 4×2 models, 6×4 medium and heavy trucks, etc., which can meet users' needs for commercial vehicles; it can reduce no-load losses, while ensuring the power of the system, and taking into account fuel economy, thereby improving fuel saving rate.

[0079] Figure 3 A schematic diagram of a hybrid power system provided in an embodiment of the present application Figure 3 ;like Figure 3 As shown, the system includes an engine 101, a clutch 102, a first motor 110, a first reduction mechanism 109, a second motor 106, a second reduction mechanism 105, a third shift mechanism 112, a fourth shift mechanism 203 and a drive axle 111; wherein

[0080] The output shaft of the engine 101 is connected to one end of the clutch 102, and the other end of the clutch 102 is connected to the drive axle 111 through the third shift mechanism 112 and the fourth shift mechanism 203. The third shift mechanism 112 is also connected to the second motor 106 through the second reduction mechanism 105; the fourth shift mechanism 203 is also connected to the first motor 110 through the first reduction mechanism 109;

[0081] The third shift mechanism 112 is used to connect or disconnect the clutch 102 with the second reduction mechanism 105 , and the fourth shift mechanism 203 is also used to connect or disconnect the third shift mechanism 112 with the first reduction mechanism.

[0082] Specifically, the third gear shift mechanism 112 includes a first gear, a second gear and an intermediate gear. The intermediate gear of the third gear shift mechanism 112 is connected to the input shaft of the third gear shift mechanism 112, and the second gear of the third gear shift mechanism 112 is connected to the output shaft of the third gear shift mechanism 112; the first gear of the third gear shift mechanism 112 is connected to the first reduction mechanism 109.

[0083] Specifically, the fourth gear shifting mechanism 203 includes a first gear and a second gear. The fourth gear shifting mechanism 203 includes a first gear and a second gear that can be engaged according to gears. The output shaft of the third gear shifting mechanism 112 is connected to the drive shaft 107 of the drive axle 111 through the second gear of the fourth gear shifting mechanism 203, and the first gear of the fourth gear shifting mechanism is connected to the first reduction mechanism 109 through the fifth transmission mechanism 202.

[0084] Specifically, the third gear shift mechanism 112 includes a first gear, a second gear and an intermediate gear. The first gear is: the first gear position and the intermediate gear position of the third gear shift mechanism 112 are in contact with each other to achieve linkage. The second gear is: the second gear position and the intermediate gear position of the third gear shift mechanism 112 are in contact with each other to achieve linkage. The intermediate gear is: the intermediate gear position of the third gear shift mechanism 112 does not fit with other gear positions.

[0085] Specifically, the fourth shift mechanism 203 includes a first gear and a second gear, the first gear is the first gear of the fourth shift mechanism 203 and is engaged with the second gear thereof to achieve linkage, and the middle gear of the fourth shift mechanism is the first gear and is disconnected from the second gear thereof and does not achieve linkage;

[0086] Specifically, according to the cooperation of the third shift mechanism 112, the fourth shift mechanism 203 and the clutch 102, the embodiment of the present application can realize the following modes:

[0087] The clutch 102 is disconnected, the third shift mechanism 112 is placed in the middle gear, and the fourth shift mechanism 203 is placed in the first gear: the first motor 110 is working, and the torque is amplified by the first reduction mechanism 109 and then transmitted to the drive shaft 107 of the drive axle 111 through the fourth shift mechanism 203 for driving the vehicle wheels, thereby realizing the first pure electric mode of single-motor drive.

[0088] The clutch 102 is disconnected, the third shift mechanism 112 is placed in the second gear, and the fourth shift mechanism 203 is placed in the second gear: the second motor 106 is working, and the torque is amplified by the second reduction mechanism 105 and then transmitted to the drive shaft 107 of the drive axle 111 through the third shift mechanism 112 and the fourth shift mechanism 203 for driving the vehicle wheels, thereby realizing the second pure electric mode of single-motor drive.

[0089] The clutch 102 is engaged, the third gear shift mechanism 112 is in the first gear, and the fourth gear shift mechanism 203 is in the first gear: on the one hand, the engine 101 is working, and the battery is charged through the clutch 102, the third gear shift mechanism 112, the second reduction mechanism 105 and the second motor 106 in sequence; on the other hand, the first motor 110 amplifies the torque through the first reduction mechanism 109 and transmits it to the drive shaft 107 of the drive axle 111 through the fourth gear shift mechanism 203 for driving the vehicle wheels. In the series mode, the battery charging and the vehicle driving can be carried out simultaneously, thereby realizing the series mode.

[0090] The clutch 102 is engaged, the third shift mechanism 112 is placed in the second gear, and the fourth shift mechanism 203 is placed in the first gear: first, the engine 101 is working, and the wheel transmission is carried out through the clutch 102, the third shift mechanism 112, the fourth shift mechanism 203, and the drive shaft 107 in sequence; second, the first motor 110 is working, and the wheel transmission is carried out through the first reduction mechanism 109, the fourth shift mechanism 203, and the drive axle 111 in sequence; the parallel mode of the engine 101 and the first motor 110 as the driving power source is realized, and when multiple power sources are driven, the drive shaft 107 receives power as a torque merging unit;

[0091] The clutch 102 is engaged, the third shift mechanism 112 is in the second gear, and the fourth shift mechanism 203 is in the second gear: the drive shaft 107 is disconnected from the first motor 110 and the second motor 106, and the engine 101 provides power to the drive axle 111 through the clutch 102, the third shift mechanism 112, and the fourth shift mechanism 203 in sequence; the engine direct drive mode without motor operation is realized.

[0092] The system provided by the embodiment of the present application includes an engine 101, a clutch 102, a first motor 110, a first reduction mechanism 109, a second motor 106, a second reduction mechanism 105, a third shift mechanism 112, a fourth shift mechanism 203 and a drive axle 111; the output shaft of the engine 101 is connected to one end of the clutch 102, and the other end of the clutch 102 is connected to the drive axle 111 through the third shift mechanism 112 and the fourth shift mechanism 203, and the third shift mechanism 112 is also connected to the second reduction mechanism 105 and the second motor 106; the fourth shift mechanism 203 is also connected to the first motor 110 through the first reduction mechanism 109; the third shift mechanism 112 is used to realize or disconnect the connection between the clutch 102 and the second reduction mechanism 105, and the fourth shift mechanism 203 is also used to realize or disconnect the connection between the third shift mechanism 112 and the first reducer. The following technical effects can be achieved:

[0093] The embodiment of the present application can provide a non-plug-in hybrid system, which can realize the first pure electric mode driven by the first motor, the second pure electric mode driven by the second motor, the series model of power generation and driving in parallel, the parallel mode of dual power source hybrid and the engine direct drive mode according to the cooperation between the clutch 102 and the third shift mechanism 112. The system provided by this embodiment has a compact structure and can be applied to a variety of working conditions and a variety of vehicle models to meet the user's demand for commercial vehicles; it can reduce no-load loss, while ensuring the power of the system, and taking into account fuel economy, and improving the fuel saving rate.

[0094] Figure 4 A schematic diagram of a non-plug-in hybrid system provided in an embodiment of the present application Figure 4 ;like Figure 4 As shown, the system includes an engine 101, a clutch 102, a first motor 110, a first reduction mechanism 109, a second motor 106, a second reduction mechanism 105, a third shift mechanism 112, a fourth shift mechanism 203, a speed change mechanism and a drive axle 111; wherein

[0095] The output shaft of the engine 101 is connected to one end of the clutch 102, and the other end of the clutch 102 is connected to the drive axle 111 through the third shift mechanism 112, the fourth shift mechanism 203, and the speed change mechanism. The third shift mechanism 112 is also connected to the second motor 106 through the second reduction mechanism 105; the fourth shift mechanism 203 is also connected to the first motor 110 through the first reduction mechanism 109;

[0096] The third shift mechanism 112 is used to connect or disconnect the clutch 102 with the second reduction mechanism 105 , and the fourth shift mechanism 203 is also used to connect or disconnect the third shift mechanism 112 with the first reduction mechanism.

[0097] Specifically, the third gear shift mechanism 112 includes a first gear, a second gear and an intermediate gear. The intermediate gear of the third gear shift mechanism 112 is connected to the input shaft of the third gear shift mechanism 112, and the second gear of the third gear shift mechanism 112 is connected to the output shaft of the third gear shift mechanism 112; the first gear of the third gear shift mechanism 112 is connected to the first reduction mechanism 109.

[0098] Specifically, the fourth gear shifting mechanism 203 includes a first gear and a second gear. The fourth gear shifting mechanism 203 includes a first gear and a second gear that can be engaged according to gears. The output shaft of the third gear shifting mechanism 112 is connected to the drive shaft 107 of the drive axle 111 through the second gear of the fourth gear shifting mechanism 203, and the first gear of the fourth gear shifting mechanism is connected to the first reduction mechanism 109 through the fifth transmission mechanism 202.

[0099] Specifically, the fifth transmission mechanism 202 is a gear transmission structure, and the first reduction mechanism 109 is a planetary reducer; the fifth transmission mechanism 202 is engaged with the first gear of the fourth shift mechanism 203, and the fifth transmission mechanism 202 is coaxially connected to one end of the planetary carrier in the planetary reducer, and one end of the sun gear in the planetary reducer is coaxially connected to the first motor 110.

[0100] Specifically, the system further includes a second transmission mechanism 104, and a third shift mechanism 112 is sequentially connected to the second transmission mechanism 104 and the second reduction mechanism 105 through a first gear, the second transmission mechanism is a gear pair structure, and the second reduction mechanism 105 is a planetary reducer;

[0101] Specifically, the second transmission mechanism includes a first gear and a second gear that are meshed with each other, the first gear is meshed with the first gear of the third shift mechanism 112, the second gear is coaxially connected to one end of the planetary carrier of the second reduction mechanism 105, and one end of the sun gear of the second reduction mechanism 105 is coaxially fixed to the second motor 106.

[0102] Optionally, the speed change mechanism is a two-speed gearbox or a four-speed gearbox 400;

[0103] Further, the four-speed gearbox 400 includes a sixth gear shift mechanism 401, a seventh gear shift mechanism 402 and a fourth transmission mechanism 403; the sixth gear shift mechanism 401 includes a first gear, a second gear and an intermediate gear, the first gear of the sixth gear shift mechanism 401 can be meshed and linked with the intermediate gear of the sixth gear shift mechanism 401 through a gear set, and the second gear of the sixth gear shift mechanism 401 can be meshed and linked with the intermediate gear of the sixth gear shift mechanism 401 through a gear set;

[0104] The seventh gear shift mechanism 402 includes a first gear, a second gear and an intermediate gear. The intermediate gear of the seventh gear shift mechanism 402 can be meshed and linked with the first gear of the seventh gear shift mechanism 402 through a gear set, and the intermediate gear of the seventh gear shift mechanism 402 can be meshed and linked with the second gear of the seventh gear shift mechanism 402 through a gear set.

[0105] The first gear position of the sixth gear shift mechanism 401 can be linked with the fourth gear shift mechanism 203, and the middle gear position of the sixth gear shift mechanism 401 can be linked with the drive shaft 107 through the middle gear position of the seventh gear shift mechanism 402;

[0106] The first gear position of the sixth gear shift mechanism 401 , the second gear position of the sixth gear shift mechanism 401 , the first gear position of the seventh gear shift mechanism 402 , and the second gear position of the seventh gear shift mechanism 402 can also be linked according to the fourth transmission mechanism 403 .

[0107] Furthermore, the fourth transmission mechanism is a coaxial gear set, which adjusts the torque through transmission of different gears and the tooth ratio between meshing gears.

[0108] Specifically, the four-speed gearbox 400 achieves speed change in the following manner:

[0109] First gear: the sixth gear shift mechanism 401 is placed in the middle gear position (i.e., not engaged with the first gear position or the second gear position), and the second gear position in the seventh gear shift mechanism 402 is engaged with the middle gear position, then the output shaft of the third gear shift mechanism 112 drives the drive axle 111 in sequence through the first gear position of the sixth gear shift mechanism 401, the fourth transmission mechanism 403, the second gear position of the seventh gear shift mechanism 402, and the middle gear position.

[0110] Second gear: the sixth gear shift mechanism 401 is placed in the middle gear position (i.e. not engaged with the first gear position or the second gear position), and the first gear position in the seventh gear shift mechanism 402 is engaged with the middle gear position, then the output shaft of the third gear shift mechanism 112 drives the drive axle 111 in sequence through the first gear position of the sixth gear shift mechanism 401, the fourth transmission mechanism 403, the first gear position of the seventh gear shift mechanism 402, and the middle gear position.

[0111] Third gear: The second gear position of the sixth gear shift mechanism 401 matches the middle gear position, and the seventh gear shift mechanism 402 is placed in the middle gear position. Then the output shaft of the third gear shift mechanism 112 drives the drive axle 111 through the first gear position of the sixth gear shift mechanism 401, the fourth transmission mechanism 403, the second gear position, the middle gear position, and the middle gear position of the seventh gear shift mechanism 402.

[0112] Fourth gear: the first gear position and the middle gear position of the sixth gear shift mechanism 401 match each other, and the seventh gear shift mechanism 402 is placed in the middle gear position. Then, the output shaft of the third gear shift mechanism 112 drives the drive axle 111 through the first gear position, the middle gear position of the sixth gear shift mechanism 401 and the middle gear position of the seventh gear shift mechanism 402.

[0113] It should be noted that, among the above four gears, the higher the gear, the higher the speed.

[0114] As an embodiment, the third shift mechanism 112 and the fourth shift mechanism 203 are both fork shift mechanisms.

[0115] Furthermore, the first motor 110 and the second motor 106 are high-speed motors.

[0116] Optionally, the output shaft of the first motor 110 , the output shaft of the second motor 106 and the drive shaft 107 are arranged in parallel.

[0117] Optionally, the drive axle 111 is a single drive axle 111 or a dual mechanical drive axle 111, so that the present embodiment can be applied to different vehicle types, including light commercial vehicles, 4×2 vehicles, 6×4 medium and heavy trucks, etc.

[0118] The system provided in the embodiment of the present application can achieve the following technical effects:

[0119] The system provided by the present application can realize a first pure electric mode in which the first motor 110 provides driving force: when the clutch 102 is disconnected, the third shift mechanism 112 is placed in the middle gear, and the fourth shift mechanism 203 is placed in the first gear, the single motor drive of the first motor 110 is realized;

[0120] The system provided by the present application can realize the second pure electric mode in which the second motor 106 provides driving force: when the clutch 102 is disconnected, the third shift mechanism 112 is placed in the second gear, and the fourth shift mechanism 203 is placed in the second gear, the single motor drive of the second motor 106 is realized;

[0121] The system provided by the present application can realize the series mode of charging and driving: when the clutch 102 is engaged, the third shift mechanism 112 is placed in the first gear, and the fourth shift mechanism 203 is placed in the first gear, the engine 101 sequentially charges the battery through the clutch 102, the third shift mechanism 112, the second reduction mechanism 105 and the second motor 106. The first motor 110 sequentially transmits to the drive axle 111 through the first reduction mechanism 109 and the fourth shift mechanism 203 for driving the vehicle wheels, realizing the series mode;

[0122] The system provided by the present application can realize the parallel mode of hybrid power: the clutch 102 is engaged, the third shift mechanism 112 is placed in the second gear, and the fourth shift mechanism 203 is placed in the first gear: on the one hand, the engine 101 is sequentially transmitted to the wheels through the clutch 102, the third shift mechanism 112, the fourth shift mechanism 203, and the drive shaft 107; on the other hand, the first motor 110 is sequentially transmitted to the drive axle 111 through the first reduction mechanism 109 and the fourth shift mechanism 203; the parallel mode of the engine 101 and the first motor 110 as the driving power source is realized;

[0123] The system provided by the present application can realize a direct drive mode in which only the engine 101 provides power: when the clutch 102 is engaged, the third shift mechanism 112 is in the second gear, and the fourth shift mechanism 203 is in the second gear, the drive shaft 107 is disconnected from the first motor 110 and the second motor 106, and the engine 101 provides power to the drive axle 111 through the clutch 102, the third shift mechanism 112, and the fourth shift mechanism 203 in sequence; the engine direct drive mode without motor operation is realized.

[0124] The embodiment of the present application can achieve speed shifting under different power source modes through the speed shifting mechanism. The speed shifting function is not affected by the power source mode, and speed shifting and forward movement can be achieved under the above different power source modes.

[0125] In summary, the system provided in this embodiment has a compact structure and can be applied to a variety of working conditions and a variety of vehicle models, including light commercial vehicles, 4×2 models, 6×4 medium and heavy trucks, etc., which can meet users' needs for commercial vehicles; it can reduce no-load losses, while ensuring the power of the system, and taking into account fuel economy, thereby improving fuel saving rate.

[0126] An embodiment of the present application further provides a vehicle, including the above-mentioned non-plug-in hybrid power system, whose implementation principle and technical effect are similar to those of the above-mentioned system and will not be repeated here.

[0127] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "illustrative embodiments", "examples", "specific examples", or "some examples" means that the specific features, structures, materials, or characteristics described in conjunction with the embodiments or examples are included in at least one embodiment or example of the present invention. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described may be combined in any one or more embodiments or examples in a suitable manner.

[0128] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A non-plug-in hybrid power system, characterized in that: It includes an engine, a clutch, a first motor, a first reduction mechanism, a second motor, a second reduction mechanism, a third shift mechanism and a drive axle; wherein The output shaft of the engine is connected to one end of the clutch, the other end of the clutch is connected to the drive axle through the third shifting mechanism, the input shaft of the third shifting mechanism is connected to the clutch, the output shaft of the third shifting mechanism is also connected to the first motor through the first reduction mechanism, and the third shifting mechanism is also connected to the second motor through the second reduction mechanism; The third shifting mechanism is used to realize or disconnect the connection between the clutch and the second speed reduction mechanism, and the third shifting mechanism is also used to realize or disconnect the connection between the clutch and the drive axle; The third shift mechanism comprises a first gear, a second gear and an intermediate gear, the intermediate gear of the third shift mechanism is connected to the input shaft of the third shift mechanism, the second gear of the third shift mechanism is connected to the output shaft of the third shift mechanism; the first gear of the third shift mechanism is connected to the second reduction mechanism; The first reduction mechanism is a planetary reducer; When the clutch is disconnected and the third shift mechanism is placed in the middle gear, the first motor is in operation, and the torque is amplified by the first reduction mechanism and then transmitted to the drive shaft of the drive axle, thereby realizing a pure electric mode driven by a single motor; When the clutch is engaged and the third shift mechanism is in the first gear, the engine is operated to charge the battery through the clutch, the third shift mechanism, the second reduction mechanism and the second motor in sequence; the first motor amplifies the torque through the first reduction mechanism and transmits it to the drive shaft of the drive axle for driving the vehicle wheels. In this series mode, battery charging and vehicle driving can be achieved simultaneously; When the clutch is engaged and the third shift mechanism is in the second gear, the engine works, and the wheel transmission is performed through the clutch, the third shift mechanism, and the drive shaft of the drive axle in sequence; the first motor works, and the torque is amplified by the first reduction mechanism and then transmitted to the drive shaft of the drive axle to realize wheel transmission; a parallel mode of the engine and the first motor as driving power sources is realized.

2. The system according to claim 1, characterized in that The system further comprises a first transmission mechanism, the output shaft of the third shift mechanism is connected to the first reduction mechanism via the first transmission mechanism, and the first transmission mechanism is a gear pair structure; The first transmission mechanism includes a third gear and a fourth gear that are meshed with each other; the third gear is coaxially connected to the output end of the third shift mechanism, the fourth gear is coaxially connected to one end of the planetary carrier in the first reduction mechanism, and one end of the sun gear of the first reduction mechanism is coaxially connected to the first motor.

3. The system according to claim 1, characterized in that The output shaft of the third shift mechanism is also connected to the first reduction mechanism through the fourth shift mechanism and the fifth transmission mechanism in sequence; the output shaft of the third shift mechanism is also connected to the drive axle through the fourth shift mechanism; The fourth shift mechanism includes a first gear and a second gear, the first gear and the second gear of the fourth shift mechanism can be engaged according to gears, the output shaft of the third shift mechanism is connected to the drive shaft of the drive axle through the second gear of the fourth shift mechanism, and the first gear of the fourth shift mechanism is connected to the first reduction mechanism through the fifth transmission mechanism; When the clutch is disconnected, the third shift mechanism is placed in the middle gear, and the fourth shift mechanism is placed in the first gear, the single motor drive of the first motor is realized; When the clutch is disconnected, the third shift mechanism is placed in the second gear, and the fourth shift mechanism is placed in the second gear, the single motor drive of the second motor is realized; When the clutch is engaged, the third shift mechanism is in the first gear, and the fourth shift mechanism is in the first gear, the engine charges the battery through the clutch, the third shift mechanism, the second reduction mechanism, and the second motor in sequence; the first motor amplifies the torque through the first reduction mechanism and transmits it to the drive shaft of the drive axle through the fourth shift mechanism for driving the vehicle wheels, thereby realizing a series mode; When the clutch is engaged, the third shift mechanism is in the second gear, and the fourth shift mechanism is in the first gear, the engine sequentially transmits the power to the wheels through the clutch, the third shift mechanism, the fourth shift mechanism, and the drive shaft of the drive axle; the first motor sequentially transmits the power to the wheels through the first reduction mechanism, the fourth shift mechanism, and the drive shaft of the drive axle; the parallel mode of the engine and the first motor as driving power sources is realized; When the clutch is engaged, the third shift mechanism is in the second gear, and the fourth shift mechanism is in the second gear, the drive shaft of the drive axle is disconnected from the first motor and the second motor, and the engine provides power to the drive axle through the clutch, the third shift mechanism, and the fourth shift mechanism in sequence; Realizes engine direct drive mode without motor operation.

4. The system according to claim 3, characterized in that The fifth transmission mechanism is a gear structure; The fifth transmission mechanism is engaged with the first gear of the fourth shift mechanism, the fifth transmission mechanism is coaxially connected to one end of the planetary carrier in the planetary reducer, and one end of the sun gear in the planetary reducer is coaxially connected to the first motor.

5. The system according to claim 1 or 3, characterized in that: The system further comprises a second transmission mechanism, the third shift mechanism is sequentially connected with the second transmission mechanism and the second reduction mechanism through a first gear, the second transmission mechanism is a gear pair structure, and the second reduction mechanism is a planetary reducer; The second transmission mechanism includes a first gear and a second gear that are meshed with each other, the first gear is meshed with the first gear of the third shift mechanism, the second gear is coaxially connected to one end of the planetary carrier in the second reduction mechanism, and one end of the sun gear of the second reduction mechanism is coaxially fixed to the second motor.

6. The system according to claim 2, characterized in that The system further comprises a speed change mechanism, the output shaft of the third shift mechanism is further connected to the drive axle through the speed change mechanism, and the speed change mechanism is a two-speed transmission or a four-speed transmission; When the clutch is disconnected and the third shift mechanism is placed in the middle gear, the first motor can amplify the torque through the first reduction mechanism and then transmit it to the drive shaft of the drive axle through the first transmission mechanism and the speed change mechanism; When the clutch is engaged and the third shift mechanism is in the second gear, the engine transmits power through the clutch, the third shift mechanism, the speed change mechanism, and the drive shaft of the drive axle in sequence; the first motor works to realize wheel transmission through the first reduction mechanism, the speed change mechanism, and the drive axle in sequence.

7. The system according to claim 1, characterized in that The system further includes a battery, and the first motor and the second motor are both connected to the battery.

8. A vehicle, characterized in that: Comprising a system as claimed in any one of claims 1 to 7.

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