Hybrid system and vehicle

Abstract

The present disclosure provides a hybrid power system and a vehicle, the system comprising an engine, a double clutch, an input shaft, an output shaft, an electric machine, 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; the engine is in driving connection with the input shaft, the driving gear is sleeved on the input shaft, the driven gear is sleeved on the output shaft, the output shaft is suitable for being in driving connection with a wheel; the at least one output synchronizer is used for switching the driven gear between a first state and a second state; the at least three gear sets comprise a target gear set, the driven gear of the target gear set is directly or indirectly engaged with an output of the electric machine, and the driving gear of the target gear set is capable of being switched between a third state and a fourth state under the action of the 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-powered vehicles consume oil and generate large amounts of pollutants, contributing to a deteriorating environment. Pure electric vehicles, on the other hand, consume electricity, effectively avoiding pollutants. However, the slow development of battery energy storage technology has led to widespread range anxiety among pure electric vehicles. This has led to the emergence of hybrid vehicles. Hybrid vehicles utilize a hybrid powertrain system, balancing the need for high range with the need for low pollution.

[0003] In related technologies, 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, an electric 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, the gear ratios of different gear sets being different;

[0008] The engine is in driving connection with 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 driving connection with 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, the driven gear of the target gear set is directly or indirectly engaged with the output member of the motor, and the 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 system further includes a dual clutch assembly, the dual clutch assembly including a first clutch and a second clutch, wherein active portions of the first clutch and the second clutch are switchable between a fifth state and a sixth state, wherein in the fifth state, the active portion is drivingly connected to an output member of the engine, and in the sixth state, the active portion is disconnected from the output member of the engine, the driven portion of the first clutch is fixedly connected to the central input shaft, and the driven portion 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 the 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 the hybrid power system as described above.

[0025] The disclosed embodiments provide a hybrid powertrain and vehicle comprising at least three gear sets, each with different transmission ratios. When the engine is the sole power source, power output can be achieved through different gear sets by changing the driven gear that rotates synchronously with the output shaft, thereby achieving output at different transmission ratios. This means that at least three gear positions are available in the engine mode. The driving gear of the target gear set in the at least three gear sets can be switched between a third state and a fourth state under the control of at least one input synchronizer. Consequently, in the pure electric mode, at least two gear positions are available: directly rotating the driven gear of the target gear set synchronously with the output shaft for power output; or decoupling the driven gear of the target gear set from the output shaft and rotating the driving gear of the target gear set synchronously with the input shaft, achieving power output through other driving gears rotating synchronously with the input shaft and their corresponding driven gears. Furthermore, the hybrid powertrain can also operate in hybrid mode, power generation mode, and kinetic energy recovery mode. These multiple gear positions ensure that the hybrid powertrain can select the most appropriate gear according to the operating conditions, ensuring that the vehicle always operates at a high efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] In order to more clearly illustrate the technical solutions in the embodiments of the present disclosure, the following briefly introduces the drawings required for use in the description of the embodiments. 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 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 engine mode;

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

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

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

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

[0035] Figure 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 illustrate specific embodiments of the present disclosure, which will be described in more detail below. These drawings and textual descriptions are not intended to limit the scope of the present disclosure in any way, but rather to illustrate the concepts of the present disclosure to those skilled in the art by reference to specific embodiments. DETAILED DESCRIPTION

[0047] The following will clearly and completely describe the technical solutions in the embodiments of the present disclosure in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present disclosure, not all of them. All other embodiments obtained by ordinary technicians in this field based on the embodiments of the present disclosure without making any creative efforts shall fall within the scope of protection of the present disclosure.

[0048] The directional terms used in the embodiments of this disclosure, such as "upper," "lower," and "side," are generally based on the orientation shown in the figures or the relative orientations of the components in the conventional configuration of the hybrid system. These directional terms are used solely to more clearly describe the relationships between components and are not intended to describe absolute orientations. When the hybrid system is positioned in different positions, the orientation 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 skilled in the art.

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

[0051] In a first aspect, 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, an electric 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. Different gear sets H have different transmission ratios.

[0052] The engine 10 is in driving connection with the input shaft 20, 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 driving connection with the wheels;

[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. The driven gear Ho of the target gear set Ht is directly or indirectly engaged with the output member of the motor 40. The 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. In the fourth state, the driving gear Hi is separated from the input shaft 20.

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

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

[0057] Combine Figure 1 and Figure 5-6 When the vehicle is powered solely by the electric motor, the first gear position represents the synchronous rotation of the driven gear of the target gear set and the output shaft (in this case, the driving gear of the target gear set is disconnected from the input shaft, and the driven gears of the other gear sets are disconnected from the output shaft). The second gear position represents the synchronous rotation of the driven gear of the target gear set and the input shaft, with the driving gear of the target gear set rotating synchronously with the input shaft. Power output is achieved through the other driving gears rotating 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 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. At the same time, the power output of the engine can be output through any gear set other than the target gear set. In other words, there are four gears in 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 engine's power is delivered to the wheels, and part is sent to the motor, generating and storing electricity. In this case, any of the five gear sets can be selected to transmit the engine's power. Furthermore, the power generation mode offers five gears.

[0060] When the vehicle is operating in kinetic energy recovery mode, refer to Figure 9 The driven gear of the target gear set rotates synchronously with the output shaft. The kinetic energy of the wheels is transferred to the motor via the output shaft and the driven gear of the target gear set, causing the motor to generate and store electricity, completing kinetic energy recovery. In other words, there is only one gear in 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, embodiments of the present disclosure provide a hybrid power system comprising at least three gear sets, each with different transmission ratios. When the engine is the sole power source, power output can be achieved through different gear sets by changing the driven gear that rotates synchronously with the output shaft, thereby achieving output at different transmission ratios. This means that at least three gear positions are available in the engine mode. The driving gear of the target gear set in the at least three gear sets can be switched between a third state and a fourth state under the action of at least one input synchronizer. Consequently, in the pure electric mode, at least two gear positions are available: directly rotating the driven gear of the target gear set synchronously with the output shaft for output; or decoupling the driven gear of the target gear set from the output shaft while rotating the driving gear of the target gear set synchronously with the input shaft, achieving power output through other driving gears rotating synchronously with the input shaft and their corresponding driven gears. Furthermore, this hybrid power system can also achieve hybrid mode, power generation mode, and kinetic energy recovery mode. These multiple gear positions ensure that the hybrid power system can select the most appropriate gear according to the operating conditions, ensuring that the vehicle always operates at a high efficiency.

[0063] Optionally, the driven gear Ho of the target gear set Ht is directly meshed with the output member of the motor 40 or indirectly meshed through an intermediate gear. 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 system further includes a dual-clutch assembly 50, which includes a first clutch 501 and a second clutch 502. The active portions x of the first clutch 501 and the second clutch 502 are switchable between a fifth state and a sixth state. In the fifth state, the active portion x is drivingly connected to the output member of the engine 10. In the sixth state, the active portion x is disconnected from the output member of the engine 10. The driven portion y of the first clutch 501 is fixedly connected to the central input shaft 201, and the driven portion 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 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 .

[0067] In this embodiment, the input shaft is divided into a central input shaft and a hollow input shaft, both of which can rotate about 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 controlled 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 controlled by a first clutch connected to the central input shaft. The hybrid system can have a controller that can control the engine to connect to one of the first and second clutches, disconnect from the other, or disconnect from both clutches, thereby achieving rapid gear selection.

[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. When the first clutch is in driving connection with the engine, a preliminary selection of the gear positions corresponding to the three gear sets is achieved. Subsequently, the user can further select which of the three gear sets is used for power output, thereby achieving precise gear selection. The driving gears of the two gear sets are mounted on the hollow input shaft. When the second clutch is in driving connection with the engine, a preliminary selection of the gear positions corresponding to the two gear sets is achieved. Subsequently, the user can further select which of the two gear sets is used for power output, thereby achieving precise gear selection.

[0072] With the above arrangement, it is possible to group multiple gears, and select different groups with the help of different clutches, thus avoiding the problem of a 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] The at least one output synchronizer Go includes a first output synchronizer Go1 located between the second gear set H2 and the driven gear Ho of the fourth gear set H4 for switching 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 arrangement, 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 through 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 can be selected for power output with the help of the input synchronizer. The above arrangement realizes 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, to achieve the multiple functions corresponding to the target gear set, the driving gear of the fifth gear set must be able to switch between the third and fourth states, and therefore the driving gear of the fifth gear set needs to be equipped with a corresponding synchronizer. The above configuration uses the first input synchronizer to regulate the state relationship between the driving gears of the first and fifth gear sets and the input shaft, which helps maximize the use of the first input synchronizer to achieve more gear positions.

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

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

[0080] Optional, reference Figure 1-2 , the 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 arbitrarily between the first state and the second state as required, thereby ensuring that multiple 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 reduce the number of synchronizers in the hybrid 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, combined 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 cornering.

[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 having a built-in operating mode and gear shifting algorithm. The controller controls the operating mode and gear shifting of the hybrid system based on the actual operating conditions of the vehicle. The operating modes include engine mode, pure electric mode, hybrid mode, power generation mode, and kinetic energy recovery mode. The gear shifting of each mode can be described in the previous or subsequent descriptions. This allows for automated and intelligent switching of vehicle operating modes and gear shifting.

[0087] Optionally, the controller may include a built-in mapping relationship between vehicle operating conditions and the hybrid system's operating mode and gear position, and query this mapping relationship to determine the target operating mode and gear position. Alternatively, the controller may include a built-in pre-trained control model, which may be trained based on data calibrated by technicians, to determine the target operating mode and gear position.

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

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

[0090] Combine Figure 4 When the engine 10 is in transmission connection with the first clutch 501 (and is 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 first gear of the engine mode is realized. Under the condition of coaxial rotation (the driving gears of the first gear set H1 and the fifth gear set H5 are separated from the input shaft, and the driven gears of the fifth gear set H5, the first gear set H1, the second gear set H2 and the fourth gear set H4 are separated from the output shaft), the third gear of the engine mode is realized; under the condition that 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 Go3 (the driven gears of the remaining gear sets are separated from the output shaft), the fifth gear of the engine mode is realized.

[0091] When the engine 10 is in transmission connection with the second clutch 502 (separated from the first clutch 501), and 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 second 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), the fourth gear of the engine mode is realized.

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

[0093] Secondly, for the pure electric mode, there are two gear positions:

[0094] In combination with Figure 5 , the driven gear of the fifth gear set H5 rotates coaxially with the output shaft through the third output synchronizer Go3 (the driven gears of the other gear sets are separated from the output shaft, and the driving gear of the fifth gear set is separated from the input shaft), realizing the first gear of the pure electric mode.

[0095] In combination with 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), realizing the second gear of the pure electric mode.

[0096] Thirdly, for the hybrid mode, there are four gear positions:

[0097] In combination with 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, realizing the power output of the motor. At the same time, referring to the aforementioned engine mode, any one of the other gear sets except the fifth gear set is selected to realize the power output of the engine. The use of each gear set except the fifth gear set corresponds to a gear position in the hybrid mode, i.e. there are four gear positions.

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

[0099] Combine Figure 7 The driven gear of the fifth gear set H5 rotates coaxially with the output shaft via the third output synchronizer Go3. This allows the engine's power output to the output shaft to be transmitted to the motor, generating electricity. Simultaneously, referring to the aforementioned engine mode, any one of the five gear sets is selected to transmit the engine's power from the input shaft to the output shaft. Each of the five gear sets corresponds to a gear position in the power generation mode. In other words, the power generation mode has five gear positions, enabling varying degrees of power generation.

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

[0101] Combine Figure 9 When the vehicle needs to decelerate, the kinetic energy of the wheels during coasting is transferred back to the motor via the output shaft. During this process, the driven gears of all gear sets except the fifth gear set are separated from the output shaft. The driven gear of the fifth gear set rotates coaxially with the output shaft via the third output synchronizer, and the driving gear is separated from the input shaft.

[0102] In summary, the hybrid power system provided by the embodiment of the present disclosure can not only realize five working modes, and ensure that the vehicle always operates in a high-efficiency state by switching between different working modes, but also provide multiple gears for modes other than 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 always operates in a high-efficiency mode during the vehicle's driving process, 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 the 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 operates in a high-efficiency state by switching between different working modes. It also provides multiple gears for modes other than the kinetic energy recovery mode, which is conducive to quickly adjusting the vehicle's energy supply method and efficiency according to the vehicle operating conditions, and further ensures that the engine or motor always operates in a high-efficiency mode during the driving process of the vehicle, 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 than two, unless expressly limited otherwise.

[0106] Other embodiments of the present disclosure will readily occur to those skilled in the art after considering the specification and practicing the present disclosure disclosed herein. This 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 not disclosed herein. The description and examples are to be considered as 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 can 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), and different gear sets (H) have different transmission ratios; The engine (10) is in driving connection with the input shaft (20), the driving gear (Hi) is sleeved on the input shaft (20), the input shaft (20) comprises a central input shaft (201) and a hollow input shaft (202), the central input shaft (201) passes through the hollow input shaft (202), the driven gear (Ho) is sleeved on the output shaft (30), and the output shaft (30) is suitable for driving connection with a wheel; 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 hybrid 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 the 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 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).

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), wherein 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 first gear set (H1) and the driven gear (Ho) of the third gear set (H3), and is used to switch the driven gear (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 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.

10. A vehicle, characterized in that: The hybrid power system comprises the hybrid power system as claimed in any one of claims 1 to 9.

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