Hybrid power system and vehicle

Abstract

The invention provides a hybrid power system and a vehicle. The system comprises an engine, double clutches, an input shaft, an output shaft, a motor, at least one input synchronizer, at least one output synchronizer and at least three gear sets, and each gear set comprises a driving gear and a driven gear for transmission; the engine is in transmission connection with the input shaft, the input shaft is sleeved with the driving gear, the output shaft is sleeved with the driven gear, and the output shaft is suitable for being in transmission connection with wheels. The at least one output synchronizer is used for switching the driven gear between the first state and the second state; the at least three gear sets comprise a target gear set, a driven gear of the target gear set is directly or indirectly meshed with an output piece of the motor, and a driving gear of the target gear set can be switched between a third state and a fourth state under the action of at least one input synchronizer. The system can realize free switching of multiple gears, and ensures that the vehicle always works in a high-efficiency state.

Description

Technical Field

[0001] The present disclosure relates to the field of vehicle technology, and in particular to a hybrid power system and a vehicle. Background Art

[0002] Traditional fuel vehicles consume oil and generate a large amount of polluting gases, which makes the environment worse. Pure electric vehicles consume electricity and can effectively avoid the generation of polluting gases. However, the slow development of battery energy storage technology has led to widespread range anxiety in pure electric vehicles. Against this background, hybrid vehicles came into being. Hybrid vehicles use hybrid power systems to meet the needs of high mileage and reduced pollution.

[0003] In the related art, the hybrid power system of a hybrid vehicle generally includes an engine and a motor. The coordination of the engine and the motor in different working states can enable the vehicle to operate in pure electric mode, engine mode or hybrid mode, etc.

[0004] However, existing hybrid vehicles have a small number of gears, which makes it difficult to ensure that the vehicle can more efficiently utilize the engine and motor under various operating conditions. Summary of the invention

[0005] In view of this, the present disclosure provides a hybrid power system and a vehicle, which can realize free switching of multiple gears to ensure that the vehicle always operates in a high-efficiency state.

[0006] Specifically, the following technical solutions are included:

[0007] In a first aspect, a hybrid power system is provided, comprising an engine, an input shaft, an output shaft, a motor, at least one input synchronizer, at least one output synchronizer, and at least three gear sets, each gear set comprising a driving gear and a driven gear of the transmission, and the transmission ratios of different gear sets are different;

[0008] The engine is drivingly connected to the input shaft, the driving gear is sleeved on the input shaft, the driven gear is sleeved on the output shaft, and the output shaft is suitable for drivingly connecting to the wheels;

[0009] The at least one output synchronizer is used to switch the driven gear between a first state and a second state, wherein the driven gear rotates synchronously with the output shaft in the first state and the driven gear is separated from the output shaft in the second state;

[0010] The at least three gear sets include a target gear set, a driven gear of the target gear set is directly or indirectly meshed with the output member of the motor, and a driving gear of the target gear set can be switched between a third state and a fourth state under the action of the at least one input synchronizer. In the third state, the driving gear rotates synchronously with the input shaft, and in the fourth state, the driving gear is separated from the input shaft.

[0011] Optionally, the input shaft includes a central input shaft and a hollow input shaft, and the central input shaft passes through the hollow input shaft;

[0012] The hybrid power system further includes a dual clutch assembly, the dual clutch assembly includes a first clutch and a second clutch, active parts of the first clutch and the second clutch can be switched between a fifth state and a sixth state, the active parts are drivingly connected to the output member of the engine in the fifth state, and the active parts are disconnected from the output member of the engine in the sixth state, the driven part of the first clutch is fixedly connected to the central input shaft, and the driven part of the second clutch is fixedly connected to the hollow input shaft;

[0013] The driving gear of at least one gear set among the at least three gear sets is sleeved on the hollow input shaft, and the driving gear of at least one gear set among the at least three gear sets is sleeved on the central input shaft.

[0014] Optionally, the at least three gear sets include a first gear set, a second gear set, a third gear set, a fourth gear set and a fifth gear set, and the fifth gear set is the target gear set;

[0015] The driving gears of the first gear set, the third gear set and the fifth gear set are sleeved on the central input shaft;

[0016] The driving gears of the second gear set and the fourth gear set are sleeved on the hollow input shaft.

[0017] Optionally, the driving gears of the second gear set and the fourth gear set are fixedly connected to the hollow input shaft;

[0018] The at least one output synchronizer includes a first output synchronizer located between driven gears of the second gear set and the fourth gear set for switching the driven gears of the second gear set and the fourth gear set between the first state and the second state.

[0019] Optionally, the at least one input synchronizer includes a first input synchronizer, which is located between the driving gears of the first gear set and the fifth gear set, and is used to adjust the driving gears of the first gear set and the fifth gear set between the third state and the fourth state.

[0020] Optionally, the at least one output synchronizer includes a second output synchronizer, which is located between the driven gears of the first gear set and the third gear set, and is used to switch the driven gears of the first gear set and the third gear set between the first state and the second state.

[0021] Optionally, the at least one output synchronizer includes a third output synchronizer, and the third output synchronizer is used to switch the driven gear of the fifth gear set between the first state and the second state.

[0022] Optionally, the driving gear of the third gear set is fixedly connected to the central input shaft.

[0023] Optionally, the hybrid power system further includes a differential, the output shaft is drivingly connected to the differential, and the differential is used to drive the wheels to move.

[0024] In a second aspect, an embodiment of the present disclosure provides a vehicle comprising a hybrid power system as described above.

[0025] The disclosed embodiment provides a hybrid power system and a vehicle, wherein the hybrid power system has at least three gear sets, and the transmission ratios of different gear sets are different. When the engine is used as the only power source, by changing the driven gear that rotates synchronously with the output shaft, power output can be achieved with the help of different gear sets, and then output with different transmission ratios can be achieved, that is, there are at least three gears to choose from in the engine mode. The driving gear of the target gear set in at least three gear sets can be switched between the third state and the fourth state under the action of at least one input synchronizer, and then for the pure electric mode, there are at least two gears to choose from, that is, directly making the driven gear of the target gear set rotate synchronously with the output shaft for output; or, making the driven gear of the target gear set separate from the output shaft, and making the driving gear of the target gear set rotate synchronously with the input shaft, and realizing power output with the help of other driving gears that rotate synchronously with the input shaft and the driven gears corresponding to the other driving gears. At the same time, the hybrid power system can also realize the hybrid mode, the power generation mode and the kinetic energy recovery mode. With the above-mentioned multiple gears, it can be ensured that the hybrid power system can select the most suitable gear according to the working conditions, and ensure that the vehicle always works in a high-efficiency state. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] In order to more clearly illustrate the technical solutions in the embodiments of the present disclosure, the drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present disclosure. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0027] Figure 1 A schematic diagram of a hybrid power system provided by an embodiment of the present disclosure;

[0028] Figure 2 A schematic diagram of a hybrid power system provided by an embodiment of the present disclosure;

[0029] Figure 3 A schematic diagram of a dual clutch assembly in a hybrid power system provided by an embodiment of the present disclosure;

[0030] Figure 4 for Figure 1 A schematic diagram of the power transmission path when the system is operating in the engine mode;

[0031] Figure 5 for Figure 1 The schematic diagram of the power transmission path when the system is operating in a pure electric mode and in one gear;

[0032] Figure 6 for Figure 1 A schematic diagram of the power transmission path when the system is operating in another gear position in the pure electric mode;

[0033] Figure 7 for Figure 1 A schematic diagram of the power transmission path when the system is working in the power generation mode;

[0034] Figure 8 for Figure 1 A schematic diagram of the power transmission path when the system is operating in the hybrid mode;

[0035] Fig. 9 for Figure 1 Schematic diagram of the power transmission path when the system is operating in kinetic energy recovery mode.

[0036] The reference numerals in the figures represent respectively:

[0037] 10-Engine;

[0038] 20-input shaft; 201-center input shaft; 202-hollow input shaft;

[0039] 30- output shaft;

[0040] 40-motor;

[0041] Gi-input synchronizer; Gi1-first input synchronizer;

[0042] Go-output synchronizer; Go1-first output synchronizer; Go2-second output synchronizer; Go3-third output synchronizer;

[0043] H-gear set; Hi-driving gear; Ho-driven gear; Ht-target gear set; H1-first gear set; H2-second gear set; H3-third gear set; H4-fourth gear set; H5-fifth gear set;

[0044] 50-dual clutch assembly; 501-first clutch; 502-second clutch; x-active part; y-driven part;

[0045] 60-Differential.

[0046] The above drawings show clear embodiments of the present disclosure, which will be described in more detail below. These drawings and text descriptions are not intended to limit the scope of the present disclosure in any way, but to illustrate the concepts of the present disclosure to those skilled in the art by referring to specific embodiments. DETAILED DESCRIPTION

[0047] The following will be combined with the drawings in the embodiments of the present disclosure to clearly and completely describe the technical solutions in the embodiments of the present disclosure. Obviously, the described embodiments are part of the embodiments of the present disclosure, rather than all of the embodiments. Based on the embodiments in the present disclosure, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present disclosure.

[0048] The directional nouns involved in the embodiments of the present disclosure, such as "upper", "lower", "side", etc., are generally based on the relative directional relationship between the structures when the hybrid power system is usually arranged, and these directional nouns are used only to more clearly describe the relationship between the structures, and are not intended to describe the absolute directional. When the hybrid power system is placed in different postures, the directional may change, for example, "upper" and "lower" may be interchangeable.

[0049] Unless otherwise defined, all technical terms used in the embodiments of the present disclosure have the same meanings as commonly understood by those of ordinary skill in the art.

[0050] In order to make the technical solutions and advantages of the present disclosure more clear, the embodiments of the present disclosure will be further described in detail below with reference to the accompanying drawings.

[0051] In a first aspect, an embodiment of the present disclosure provides a hybrid power system. Figure 1-2The hybrid system includes an engine 10, an input shaft 20, an output shaft 30, a motor 40, at least one input synchronizer Gi, at least one output synchronizer Go and at least three gear sets H, each gear set H includes a driving gear Hi and a driven gear Ho, and the transmission ratios of different gear sets H are different;

[0052] The engine 10 is connected to the input shaft 20 by transmission, the driving gear Hi is mounted on the input shaft 20, and the driven gear Ho is mounted on the output shaft 30, and the output shaft 30 is suitable for connecting to the wheels by transmission;

[0053] At least one output synchronizer Go is used to switch the driven gear Ho between a first state and a second state, in which the driven gear Ho rotates synchronously with the output shaft 30 in the first state and the driven gear Ho is separated from the output shaft 30 in the second state;

[0054] At least three gear sets H include a target gear set Ht, a driven gear Ho of the target gear set Ht is directly or indirectly meshed with an output member of the motor 40, and a driving gear Hi of the target gear set Ht can be switched between a third state and a fourth state under the action of at least one input synchronizer Gi. In the third state, the driving gear Hi rotates synchronously with the input shaft 20, and in the fourth state, the driving gear Hi is separated from the input shaft 20.

[0055] The following Figure 1-2 The case where there are five gear sets is shown for illustration, but it is easy to understand that the number of gear sets can be increased or reduced according to needs.

[0056] Combination Figure 1 and Figure 4 When the vehicle uses the engine as the only power source, the driven gear that rotates synchronously with the driven shaft can be adjusted to achieve output with different transmission ratios. That is, five gears can be achieved in the engine mode.

[0057] Combination Figure 1 and Figure 5-6 When the vehicle uses the motor as the only power source, the first gear position refers to the situation where the driven gear of the target gear set rotates synchronously with the output shaft (at this time, the driving gear of the target gear set is separated from the input shaft, and the driven gears of other gear sets are separated from the output shaft); the second gear position refers to the situation where the driven gear of the target gear set is separated from the output shaft, the driving gear of the target gear set rotates synchronously with the input shaft, and the power output is achieved through other driving gears that rotate synchronously with the input shaft and the driven gears corresponding to the other driving gears (the driven gears corresponding to the other driving gears rotate synchronously with the output shaft). There can be one or more second gear positions, and the number of the second gear positions is the same as the number of other available driving gears. That is, there are at least two gear positions in the power generation mode.

[0058] When the vehicle uses both the engine and the motor as power sources, Figure 8 , the driven gear of the target gear set rotates synchronously with the output shaft to output the power of the motor to the wheels, and the power output of the engine can be output by any gear set except the target gear set. That is, there are also four gears in the hybrid mode.

[0059] When the vehicle is operating in power generation mode, combined with Figure 7 , the driven gear of the target gear set rotates synchronously with the output shaft, part of the power output by the engine is output to the wheels, and part is output to the motor, so that the motor generates electricity and stores it. At this time, any of the five gear sets can be selected to transmit the output power of the engine. Furthermore, the power generation mode can have five gears.

[0060] When the vehicle is operating in kinetic energy recovery mode, refer to Fig. 9 , the driven gear of the target gear set rotates synchronously with the output shaft, and the kinetic energy of the wheel is transmitted to the motor via the output shaft and the driven gear of the target gear set, so that the motor generates electricity and stores electricity, completing kinetic energy recovery. That is, there is one gear in the kinetic energy recovery mode.

[0061] It is easy to understand that when more gear sets are set, the number of gears in different modes can be even greater.

[0062] In summary, the embodiment of the present disclosure provides a hybrid power system, in which there are at least three gear sets, and the transmission ratios of different gear sets are different. When the engine is used as the only power source, by changing the driven gear that rotates synchronously with the output shaft, power output can be achieved with the help of different gear sets, and then output with different transmission ratios can be achieved, that is, there are at least three gears to choose from in the engine mode. The driving gear of the target gear set in at least three gear sets can be switched between the third state and the fourth state under the action of at least one input synchronizer, and then for the pure electric mode, there are at least two gears to choose from, that is, directly making the driven gear of the target gear set rotate synchronously with the output shaft for output; or, making the driven gear of the target gear set separate from the output shaft, and making the driving gear of the target gear set rotate synchronously with the input shaft, and realizing power output with the help of other driving gears that rotate synchronously with the input shaft and the driven gears corresponding to the other driving gears. At the same time, the hybrid power system can also realize the hybrid mode, the power generation mode and the kinetic energy recovery mode. With the above-mentioned multiple gears, it can be ensured that the hybrid power system can select the most suitable gear according to the working conditions, and ensure that the vehicle always works in a high-efficiency state.

[0063] Optionally, the driven gear Ho of the target gear set Ht is directly meshed with the output member of the motor 40, or is indirectly meshed through an intermediate gear, and the number and size of the intermediate gears can be set according to the required transmission ratio.

[0064] In some embodiments, reference Figure 1-3 , the input shaft 20 includes a central input shaft 201 and a hollow input shaft 202, and the central input shaft 201 passes through the hollow input shaft 202;

[0065] The hybrid power system further includes a dual clutch assembly 50, which includes a first clutch 501 and a second clutch 502. The active parts x of the first clutch 501 and the second clutch 502 can be switched between a fifth state and a sixth state. In the fifth state, the active part x is drivingly connected to the output member of the engine 10. In the sixth state, the active part x is disconnected from the output member of the engine 10. The driven part y of the first clutch 501 is fixedly connected to the central input shaft 201, and the driven part y of the second clutch 502 is fixedly connected to the hollow input shaft 202.

[0066] The driving gear Hi of at least one gear set H among the at least three gear sets H is sleeved on the hollow input shaft 202 , and the driving gear Hi of at least one gear set H among the at least three gear sets H is sleeved on the central input shaft 201 .

[0067] In this embodiment, the input shaft is divided into a central input shaft and a hollow input shaft, and the two can rotate around the same axis. The driving gear of at least one gear set is mounted on the hollow input shaft, and the output of at least one gear set is regulated by a second clutch connected to the hollow input shaft. The driving gear of at least one gear set is mounted on the central input shaft, and the output of at least one gear set is regulated by a first clutch connected to the central input shaft. The hybrid power system can have a controller, which can control the engine to be connected to one of the first clutch and the second clutch, disconnected from the other, or disconnected from both clutches, thereby realizing rapid selection of gears.

[0068] In some embodiments, reference Figure 1-Figure 3 , at least three gear sets H include a first gear set H1, a second gear set H2, a third gear set H3, a fourth gear set H4 and a fifth gear set H5, and the fifth gear set H5 is a target gear set Ht;

[0069] The driving gears Hi of the first gear set H1, the third gear set H3 and the fifth gear set H5 are sleeved on the central input shaft 201;

[0070] The driving gears Hi of the second gear set H2 and the fourth gear set H4 are sleeved on the hollow input shaft 202 .

[0071] In this embodiment, the driving gears of the three gear sets are mounted on the central input shaft, and then when the first clutch is connected to the engine, the initial selection of the gear positions corresponding to the three gear sets can be achieved, and then it can be further selected which of the three gear sets is used for power output to achieve accurate selection of the gear position. The driving gears of the two gear sets are mounted on the hollow input shaft, and then when the second clutch is connected to the engine, the initial selection of the gear positions corresponding to the two gear sets can be achieved, and then it can be further selected which of the two gear sets is used for power output to achieve accurate selection of the gear position.

[0072] With the above arrangement, it is possible to group multiple gears, select different groups with the help of different clutches, and avoid the problem of high failure rate caused by setting a large number of gears on the same output shaft.

[0073] Optional, reference Figure 1-2 , the driving gears Hi of the second gear set H2 and the fourth gear set H4 are fixedly connected to the hollow input shaft 202;

[0074] At least one output synchronizer Go includes a first output synchronizer Go1, which is located between the driven gear Ho of the second gear set H2 and the fourth gear set H4 and is used to switch the driven gear Ho of the second gear set H2 and the fourth gear set H4 between the first state and the second state.

[0075] Based on the above settings, the driving gears of the second gear set and the fourth gear set always rotate synchronously with the hollow input shaft, and by adjusting the driven gear that rotates synchronously with the output shaft, power output can be achieved with one of the second gear set or the fourth gear set. Specifically, a first output synchronizer is set between the driven gears of the second gear set and the fourth gear set, and then the first output synchronizer is reused to select the first gear set or the second gear set, which helps to reduce the number of output synchronizers. Of course, an input synchronizer can also be set on the driving gear side, so that the driven gear side is always synchronized with the output shaft, and different driving gears are selected for power output with the help of the input synchronizer. The above settings achieve the switching between multiple gears corresponding to the second clutch with a minimum number of synchronizers.

[0076] Optional, reference Figure 1-2 At least one input synchronizer Gi includes a first input synchronizer Gi1, which is located between the first gear set H1 and the driving gear Hi of the fifth gear set H5, and is used to adjust the driving gear Hi of the first gear set H1 and the fifth gear set H5 between the third state and the fourth state.

[0077] Since the fifth gear set is the target gear set, in order to realize the multiple functions corresponding to the target gear set, the driving gear of the fifth gear set needs to be able to switch between the third state and the fourth state, and thus the driving gear of the fifth gear set needs to be equipped with a corresponding synchronizer. The above setting uses the first input synchronizer to regulate the state relationship between the driving gears of the first gear set and the fifth gear set and the input shaft, which is conducive to maximizing the use of the first input synchronizer to achieve more gears.

[0078] Optional, reference Figure 1-2 At least one output synchronizer Go includes a second output synchronizer Go2, which is located between the driven gears Ho of the first gear set H1 and the third gear set H3, and is used to switch the driven gears Ho of the first gear set H1 and the third gear set H3 between the first state and the second state.

[0079] The transmission state between two adjacent driven gears and the output shaft can be adjusted with the help of the second output synchronizer, which is conducive to achieving the switching of different gears with the help of as few output synchronizers as possible.

[0080] Optional, reference Figure 1-2 , at least one output synchronizer Go includes a third output synchronizer Go3, and the third output synchronizer Go3 is used to switch the driven gear Ho of the fifth gear set H5 between the first state and the second state.

[0081] Based on the above arrangement, it can be ensured that the driven gear of the fifth gear set can be switched between the first state and the second state as required, thereby ensuring that a variety of gear positions can be achieved.

[0082] Optional, combined Figure 1 , the driving gear Hi of the third gear set H3 is fixedly connected to the central input shaft 201. This can achieve the effect of reducing the number of synchronizers in the hybrid power system. Optionally, the driving gear Hi of the third gear set H3 is fixed to the input shaft 201 by splines or welding.

[0083] In some embodiments, in combination Figure 1 The hybrid system further includes a differential 60, the output shaft 30 is drivingly connected to the differential 60, and the differential 60 is used to drive the wheels to move.

[0084] The differential allows the left and right (front and rear) wheels to move at different speeds to ensure smooth driving of the vehicle in road conditions such as turning.

[0085] Optionally, the input synchronizer or the output synchronizer is mounted on the output shaft by means of splines.

[0086] In some embodiments, the hybrid system further includes a controller, which has a built-in working mode and gear switching algorithm. The controller controls the working mode and gear of the hybrid system according to the actual operating conditions of the vehicle. The working modes include engine mode, pure electric mode, hybrid mode, power generation mode and kinetic energy recovery mode. The gears of each mode can refer to the previous description or subsequent description. In this way, the automatic and intelligent switching of the vehicle working mode and gear can be achieved.

[0087] Optionally, the controller may have a built-in mapping relationship between the vehicle operating condition and the operating mode and gear of the hybrid system, so as to query the mapping relationship to determine the target operating mode and gear. Alternatively, the controller may have a built-in pre-trained control model, so as to determine the target operating mode and gear by the control model, and the control model may be trained based on data calibrated by a technician.

[0088] The hybrid power system defined in the above embodiments is taken as an example, and various gears that can be realized by the hybrid power system are described in detail in combination with the accompanying drawings. Based on the idea of ​​the present disclosure, various gears corresponding to other embodiments can be obtained.

[0089] First, for the engine mode, there are five gears:

[0090] Combination Figure 4 , when the engine 10 is transmission-connected with the first clutch 501 (and separated from the second clutch 502), the driving gear of the first gear set H1 rotates coaxially with the input shaft through the first input synchronizer Gi1, and the driven gear of the first gear set H1 rotates coaxially with the output shaft through the second output synchronizer Go2 (at this time, the driven gears of the third gear set H3, the second gear set H2, the fourth gear set H4 and the fifth gear set H5 are separated from the output shaft, and the driving gear of the fifth gear set H5 is separated from the input shaft), the first gear of the engine mode is realized; when the driven gear of the third gear set H3 is connected to the output shaft by the second output synchronizer Go2 The third gear of the engine mode is achieved when the driving gear of the fifth gear set H5 rotates coaxially with the input shaft with the aid of the first input synchronizer Gi1 (the driving gear of the first gear set H1 is separated from the input shaft), and the driven gear of the fifth gear set H5 rotates coaxially with the output shaft with the aid of the third output synchronizer Go5 (the driven gears of the remaining gear sets are separated from the output shaft).

[0091] When the engine 10 is transmission-connected to the second clutch 502 (separated from the first clutch 501), the second gear of the engine mode is realized when the driven gear of the second gear set H2 rotates coaxially with the output shaft (the driven gears of the fourth gear set H4, the third gear set H3, the first gear set H1 and the fifth gear set H5 are separated from the output shaft); the fourth gear of the engine mode is realized when the driven gear of the fourth gear set H4 rotates coaxially with the output shaft (the driven gears of the second gear set H2, the third gear set H3, the first gear set H1 and the fifth gear set H5 are separated from the output shaft).

[0092] It should be noted that, since the present disclosure does not specifically define the transmission ratio corresponding to each gear set, and further does not define the difference between the output powers corresponding to each gear position, the first gear, second gear, third gear, fourth gear or fifth gear described in the present disclosure are only understood as different gear positions (different output powers), and are not understood as the output powers corresponding to these gear positions gradually increasing or decreasing. Of course, in actual applications, the output powers of the first gear, second gear, third gear, fourth gear or fifth gear described in the present disclosure can also be increased or decreased in sequence by setting parameters such as the size and gear ratio of each gear set.

[0093] Second, for pure electric mode, there are two gears:

[0094] Combination Figure 5 , the driven gear of the fifth gear set H5 rotates coaxially with the output shaft through the third output synchronizer Go4 (the driven gears of other gear sets are separated from the output shaft, and the driving gear of the fifth gear set is separated from the input shaft), thereby realizing the first gear of the pure electric mode.

[0095] Combination Figure 6 , the driven gear of the fifth gear set H5 is separated from the output shaft, the driving gear rotates coaxially with the input shaft through the first input synchronizer Gi1 (the driving gear of the first gear set H1 is separated from the input shaft), and the driven gear of the third gear set H3 rotates coaxially with the output shaft through the second output synchronizer Go2 (the driven gears of the first gear set H1, the second gear set H2 and the fourth gear set H4 are separated from the input shaft), thereby realizing the second gear in pure electric mode.

[0096] Third, for hybrid mode, there are four gears:

[0097] Combination Figure 8 , the driven gear of the fifth gear set H5 rotates coaxially with the output shaft through the third output synchronizer Go3, and the driving gear is separated from the input shaft to realize the power output of the motor. At the same time, referring to the aforementioned engine mode, any other gear set except the fifth gear set is selected to realize the power output of the engine. Except for the fifth gear set, the use of each gear set corresponds to a gear position in the hybrid mode, that is, there are four gear positions.

[0098] Fourth, for power generation mode, there are five gears:

[0099] Combination Figure 7 , the driven gear of the fifth gear set H5 rotates coaxially with the output shaft through the third output synchronizer Go3, so that the power output from the engine to the output shaft can be transmitted to the motor to enable the motor to generate electricity. At the same time, referring to the aforementioned engine mode, any one of the five gear sets is selected to transmit the power of the engine from the input shaft to the output shaft. The use of each of the five gear sets corresponds to a gear position in the power generation mode. That is, there are five gear positions in the power generation mode to achieve different degrees of power generation effects.

[0100] Fifth, for the kinetic energy recovery mode, there is a gear:

[0101] Combination Fig. 9 When the vehicle needs to decelerate, the kinetic energy of the wheels is transmitted to the motor in the opposite direction through the output shaft during the vehicle's coasting process. During this process, the driven gears of the gear sets other than the fifth gear set are separated from the output shaft, while the driven gear of the fifth gear set rotates coaxially with the output shaft through the third output synchronizer, and the driving gear is separated from the input shaft.

[0102] To sum up, the hybrid power system provided by the embodiment of the present disclosure can not only realize five working modes, but also ensure that the vehicle always works in a high-efficiency state by switching between different working modes, and also provide multiple gears for other modes except the kinetic energy recovery mode, which is conducive to quickly adjusting the vehicle's energy supply method and efficiency according to the vehicle's operating conditions, and further ensure that the engine or motor of the vehicle always works in a high-efficiency mode during driving, making the vehicle more fuel-efficient and electricity-saving, while ensuring that the vehicle's power and energy replenishment speed are also effectively improved.

[0103] In a second aspect, an embodiment of the present disclosure provides a vehicle comprising a hybrid power system as described above.

[0104] The hybrid power system of the vehicle provided by the embodiment of the present disclosure can not only realize five working modes, but also ensure that the vehicle always works in a high-efficiency state by switching between different working modes, and also provide multiple gears for other modes except the kinetic energy recovery mode, which is conducive to quickly adjusting the vehicle's energy supply method and efficiency according to the vehicle's operating conditions, and further ensure that the engine or motor of the vehicle always works in a high-efficiency mode during driving, making the vehicle more fuel-efficient and power-saving, while ensuring that the vehicle's power and energy replenishment speed are also effectively improved.

[0105] In the present disclosure, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance. The term "plurality" refers to two or more, unless explicitly defined otherwise.

[0106] Those skilled in the art will readily appreciate other embodiments of the present disclosure after considering the specification and practicing the present disclosure disclosed herein. The present disclosure is intended to cover any variations, uses or adaptations of the present disclosure that follow the general principles of the present disclosure and include common knowledge or customary techniques in the art that are not disclosed in the present disclosure. The description and examples are intended to be exemplary only.

[0107] It should be understood that the present disclosure is not limited to the exact structures that have been described above and shown in the drawings, and that various modifications and changes may be made without departing from the scope thereof. The scope of the present disclosure is limited only by the appended claims.

Claims

1. A hybrid power system, characterized in that: The invention comprises an engine (10), an input shaft (20), an output shaft (30), a motor (40), at least one input synchronizer (Gi), at least one output synchronizer (Go) and at least three gear sets (H), each gear set (H) comprising a driving gear (Hi) and a driven gear (Ho) for transmission, and different gear sets (H) have different transmission ratios; The engine (10) is drivingly connected to the input shaft (20), the driving gear (Hi) is sleeved on the input shaft (20), the driven gear (Ho) is sleeved on the output shaft (30), and the output shaft (30) is suitable for drivingly connecting to wheels; The at least one output synchronizer (Go) is used to switch the driven gear (Ho) between a first state and a second state, wherein the driven gear (Ho) rotates synchronously with the output shaft (30) in the first state and the driven gear (Ho) is separated from the output shaft (30) in the second state; The at least three gear sets (H) include a target gear set (Ht), a driven gear (Ho) of the target gear set (Ht) is directly or indirectly meshed with an output member of the motor (40), and a driving gear (Hi) of the target gear set (Ht) can be switched between a third state and a fourth state under the action of the at least one input synchronizer (Gi), in which the driving gear (Hi) rotates synchronously with the input shaft (20) in the third state, and the driving gear (Hi) is separated from the input shaft (20) in the fourth state.

2. The hybrid power system according to claim 1, characterized in that: The input shaft (20) comprises a central input shaft (201) and a hollow input shaft (202), wherein the central input shaft (201) passes through the hollow input shaft (202); The hybrid power system further comprises a dual clutch assembly (50), the dual clutch assembly (50) comprising a first clutch (501) and a second clutch (502), the active parts (x) of the first clutch (501) and the second clutch (502) both being switchable between a fifth state and a sixth state, the active part (x) being transmission-connected to an output member of the engine (10) in the fifth state, and being disconnected from the output member of the engine (10) in the sixth state, the driven part (y) of the first clutch (501) being fixedly connected to the central input shaft (201), and the driven part (y) of the second clutch (502) being fixedly connected to the hollow input shaft (202); The driving gear (Hi) of at least one gear set (H) among the at least three gear sets (H) is mounted on the hollow input shaft (202), and the driving gear (Hi) of at least one gear set (H) among the at least three gear sets (H) is mounted on the central input shaft (201).

3. The hybrid power system according to claim 2, characterized in that: The at least three gear sets (H) include a first gear set (H1), a second gear set (H2), a third gear set (H3), a fourth gear set (H4) and a fifth gear set (H5), and the fifth gear set (H5) is the target gear set (Ht); The driving gears (Hi) of the first gear set (H1), the third gear set (H3) and the fifth gear set (H5) are sleeved on the central input shaft (201); The driving gears (Hi) of the second gear set (H2) and the fourth gear set (H4) are sleeved on the hollow input shaft (202).

4. The hybrid power system according to claim 3, characterized in that: The driving gears (Hi) of the second gear set (H2) and the fourth gear set (H4) are fixedly connected to the hollow input shaft (202); The at least one output synchronizer (Go) includes a first output synchronizer (Go1), which is located between the second gear set (H2) and the driven gear (Ho) of the fourth gear set (H4), and is used to switch the second gear set (H2) and the driven gear (Ho) of the fourth gear set (H4) between the first state and the second state.

5. The hybrid power system according to claim 3, characterized in that: The at least one input synchronizer (Gi) includes a first input synchronizer (Gi1), which is located between the first gear set (H1) and the driving gear (Hi) of the fifth gear set (H5), and is used to adjust the first gear set (H1) and the driving gear (Hi) of the fifth gear set (H5) between the third state and the fourth state.

6. The hybrid power system according to claim 3, characterized in that: The at least one output synchronizer (Go) includes a second output synchronizer (Go2), which is located between the driven gears (Ho) of the first gear set (H1) and the third gear set (H3), and is used to switch the driven gears (Ho) of the first gear set (H1) and the third gear set (H3) between the first state and the second state.

7. The hybrid power system according to claim 3, characterized in that: The at least one output synchronizer (Go) includes a third output synchronizer (Go3) for switching a driven gear (Ho) of the fifth gear set (H5) between the first state and the second state.

8. The hybrid power system according to any one of claims 3 to 7, characterized in that: The driving gear (Hi) of the third gear set (H3) is fixedly connected to the central input shaft (201).

9. The hybrid power system according to any one of claims 1 to 7, characterized in that: The hybrid power system further comprises a differential (60), the output shaft (30) is drivingly connected to the differential (60), and the differential (60) is used to drive the wheels to move.

10. A vehicle, characterized in that: Comprising a hybrid power system as described in any one of claims 1-9.

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