Hybrid systems and vehicles

Abstract

This disclosure provides a hybrid power system and a vehicle, belonging to the field of vehicle technology. The hybrid power system includes an engine, a generator, an electric motor, a planetary gear train, a clutch, a brake, and an output shaft. The planetary gear train includes a sun gear, planet gears, a planet carrier, and a ring gear. The planet gears mesh with the sun gear and with the inner ring of the ring gear. The planet carrier is connected to the planet gears. The first output shaft of the engine is connected to the second output shaft of the generator. The second output shaft is coaxially connected to the sun gear. The sun gear and the planet carrier are engaged or disengaged via a clutch. The ring gear is connected to the brake. The planet carrier is drive-driven to the output shaft, and the electric motor is drive-driven to the output shaft. By controlling whether the engine and electric motor operate, the power source of the hybrid power system can be switched. Furthermore, by controlling the engagement and disengagement of the clutch or brake, the gear position of the hybrid power system can be changed. The technical solutions provided by the embodiments of this disclosure can enrich the structural forms of hybrid power systems.

Description

Technical Field

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

[0002] A hybrid power system is a crucial component of a hybrid vehicle, using both an engine and an electric motor as power sources. This allows the vehicle to operate in both gasoline and electric modes, thus achieving a balance between power and fuel economy.

[0003] In related technologies, the power source of a hybrid power system includes an engine and two electric motors. The hybrid power system can switch between different driving modes by switching between different power sources.

[0004] However, the structure of hybrid power systems in related technologies is relatively simple. With the increase in vehicle types, a single type of hybrid power system cannot be applied to different types of vehicles. Therefore, it is necessary to provide a new type of hybrid power system to enrich the structure of hybrid power systems. Summary of the Invention

[0005] This disclosure provides a hybrid power system and a vehicle that can solve the technical problems existing in the related art. The technical solution of the hybrid power system and the vehicle is as follows.

[0006] In a first aspect, this disclosure provides a hybrid power system, which includes an engine, a generator, an electric motor, a planetary gear system, a clutch, a brake, and an output shaft; The planetary gear train includes a sun gear, planet gears, a planet carrier, and a ring gear. The planet gears mesh with the sun gear and with the inner ring of the ring gear. The planet carrier is connected to the planet gears. The first output shaft of the engine is connected to the second output shaft of the generator, the second output shaft is coaxially connected to the sun gear, the sun gear and the planet carrier are engaged or disengaged through the clutch, and the ring gear is connected to the brake. The planetary carrier is driven to the output shaft, and the motor is driven to the output shaft.

[0007] In one possible implementation, the hybrid power system further includes a first gear, a second gear, a third gear, and a fourth gear; The first gear is coaxially connected to the planetary carrier, the first gear meshes with the second gear, the second gear is coaxially connected to the third gear, and the third gear is driven by the output shaft; The output shaft of the electric motor and the fourth gear are coaxially connected.

[0008] In one possible implementation, the diameter of the first gear is smaller than the diameter of the second gear, the diameter of the third gear is smaller than the diameter of the second gear, and the diameter of the fourth gear is smaller than the diameter of the second gear.

[0009] In one possible implementation, the hybrid system includes an engine low-gear drive mode and an engine high-gear drive mode; In the low-gear drive mode of the engine, the engine is running, the clutch is disengaged, and the brake is engaged; In the high-gear drive mode of the engine, the engine is working, the clutch is engaged, and the brake is disengaged.

[0010] In one possible implementation, when the vehicle is started, the hybrid system is in the low-gear drive mode of the engine.

[0011] In one possible implementation, the hybrid power system includes a pure electric drive mode; In the pure electric drive mode, the electric motor operates, the clutch disengages, and the brake disengages.

[0012] In one possible implementation, the hybrid power system includes a series drive mode and a parallel drive mode; In the series drive mode, the engine drives the generator to rotate, the generator and the electric motor are electrically connected, the electric motor is working, the clutch is disengaged, and the brake is disengaged; In the parallel drive mode, both the engine and the electric motor are operating, and one of the clutch and the brake is engaged while the other is disengaged.

[0013] In one possible implementation, the parallel drive mode includes a first gear and a second gear; In the first gear position, the clutch is disengaged and the brake is engaged; In the second gear, the clutch is engaged and the brake is disengaged.

[0014] In one possible implementation, the hybrid power system includes a parking power generation mode; In the parking power generation mode, the engine drives the generator to work, the electric motor does not work, the clutch is disengaged, and the brake is disengaged.

[0015] In a second aspect, this disclosure provides a vehicle that includes a hybrid power system as described in any of the first aspects.

[0016] The technical solution provided in this disclosure includes at least the following beneficial effects: This disclosure provides a hybrid power system in which an engine is driven by a planetary gear train and an output shaft, enabling the engine to drive the output shaft to rotate. By controlling the engagement and disengagement of a clutch or brake, the transmission ratio of the planetary gear train can be changed, thereby altering the gear position of the hybrid power system. An electric motor is driven by the output shaft, enabling the engine to drive the output shaft to rotate. Furthermore, the engine is connected to a generator, allowing the engine to drive the generator to generate electricity, thereby supplying power to the hybrid power system. By controlling whether the engine and electric motor are operating, the power source of the hybrid power system can be switched. Moreover, by controlling the engagement and disengagement of the clutch or brake, the gear position of the hybrid power system can be altered. Compared with related technologies, the technical solution provided by the embodiments of this disclosure enriches the structural forms of hybrid power systems.

[0017] Furthermore, connecting the engine's first output shaft to the generator's second output shaft reduces the number of components in the hybrid system and decreases its overall size.

[0018] It should be understood that the above general description and the following detailed description are exemplary and explanatory only, and are not intended to limit this disclosure. Attached Figure Description

[0019] The accompanying drawings, which are incorporated in and form part of this specification, illustrate embodiments consistent with this disclosure and, together with the description, serve to explain the principles of this disclosure. In the drawings: Figure 1 This is a schematic diagram of the structure of a hybrid power system shown in an embodiment of this disclosure; Figure 2 This is a schematic diagram illustrating the power transmission path of an engine in a low-gear drive mode according to an embodiment of this disclosure; Figure 3 This is a schematic diagram illustrating the power transmission path of an engine in a high-gear drive mode according to an embodiment of this disclosure; Figure 4 This is a schematic diagram of a power transmission path in a series drive mode according to an embodiment of this disclosure; Figure 5 This is a schematic diagram of the power transmission path in a parallel drive mode according to an embodiment of this disclosure; Figure 6 This is a schematic diagram illustrating a power transmission path in a first gear according to an embodiment of this disclosure; Figure 7 This is a schematic diagram illustrating a power transmission path for a second gear according to an embodiment of this disclosure.

[0020] Legend: 1. Planetary gear train; 11. Sun gear; 12. Planetary gears; 13. Planet carrier; 14. Gear ring. 2. Clutch; 3. Brake; 4. Output shaft; 5. First gear; 6. Second gear; 7. The third gear; 8. The fourth gear; 9. Differential; 100, Engine; 100a, First Output Shaft; 200, generator; 200a, second output shaft; 300, electric motor; 300a, third output shaft.

[0021] The accompanying drawings have illustrated specific embodiments of this disclosure, which will be described in more detail below. These drawings and descriptions are not intended to limit the scope of the concept in any way, but rather to illustrate the concepts of this disclosure to those skilled in the art through reference to particular embodiments. Detailed Implementation

[0022] To make the objectives, technical solutions, and advantages of this disclosure clearer, the embodiments of this disclosure will be further described in detail below with reference to the accompanying drawings.

[0023] The terminology used in the embodiments of this disclosure is for illustrative purposes only and is not intended to limit the disclosure. Unless otherwise defined, the technical or scientific terms used herein should be understood in their ordinary sense by one of ordinary skill in the art to which this disclosure pertains. The terms “first,” “second,” “third,” and similar terms used in this patent application specification and claims do not indicate any order, quantity, or importance, but are merely used to distinguish different components. Similarly, the terms “a” or “one,” and similar terms do not indicate a quantity limitation, but rather indicate the presence of at least one. The terms “comprising,” “including,” and similar terms mean that the elements or objects preceding “comprising” or “including” encompass the elements or objects listed following “comprising” or “including” and their equivalents, and do not exclude other elements or objects. The terms “connected,” “linked,” and similar terms are not limited to physical or mechanical connections, but can include electrical connections, whether direct or indirect. The terms “upper,” “lower,” “left,” “right,” etc., are used only to indicate relative positional relationships, and these relative positional relationships may change accordingly when the absolute position of the described object changes. It is understood that in this disclosure, “multiple” refers to two or more, and other quantifiers are similar. The singular forms “a kind,” “the,” and “the” are also intended to include the plural forms unless the context clearly indicates otherwise.

[0024] It is further understood that, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral molding; they can refer to a mechanical connection, an electrical connection, or a connection that allows communication between the two components; they can refer to a direct connection between two components without the presence of other components, or an indirect connection through an intermediate medium; they can refer to the internal communication between two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this disclosure according to the specific circumstances.

[0025] A hybrid power system is a crucial component of a hybrid vehicle, using both an engine and an electric motor as power sources. This allows the vehicle to operate in both gasoline and electric modes, thus achieving a balance between power and fuel economy.

[0026] In related technologies, the power source of a hybrid power system includes an engine and two electric motors. The hybrid power system can switch between different driving modes by switching between different power sources.

[0027] However, the structure of hybrid power systems in related technologies is relatively simple. With the increase in vehicle types, a single type of hybrid power system cannot be applied to different types of vehicles. Therefore, it is necessary to provide a new type of hybrid power system to enrich the structure of hybrid power systems.

[0028] In view of the above-mentioned technical problems, embodiments of this disclosure provide a hybrid power system, such as... Figure 1 As shown, the hybrid power system includes an engine 100, a generator 200, an electric motor 300, a planetary gear train 1, a clutch 2, a brake 3, and an output shaft 4. The planetary gear train 1 includes a sun gear 11, planet gears 12, a planet carrier 13, and a ring gear 14. Planet gears 12 mesh with the sun gear 11 and with the inner ring of the ring gear 14. The planet carrier 13 is connected to the planet gears 12. The first output shaft 100a of the engine 100 is connected to the second output shaft 200a of the generator 200. The second output shaft 200a is coaxially connected to the sun gear 11. The sun gear 11 and the planet carrier 13 are engaged or disengaged via the clutch 2. The ring gear 14 is connected to the brake 3. The planet carrier 13 is drive-driven to the output shaft 4, and the electric motor 300 is also drive-driven to the output shaft 4.

[0029] The brake 3 is fixed to the housing of the hybrid power system. When the brake 3 is engaged, the gear ring 14 remains stationary.

[0030] The output shaft 4 connects to two wheels at each end. The hybrid system also includes a differential 9. The output shaft 4 comprises two half-shafts, each connected at one end to the differential 9 and at the other end to a wheel. When the vehicle turns, the differential 9 causes the two half-shafts to rotate at different speeds, thus allowing the vehicle to turn smoothly.

[0031] The hybrid system also includes a battery pack (not shown in the figure), which is electrically connected to the generator 200 and the electric motor 300. The battery pack can supply power to the electric motor 300, thereby driving the electric motor 300 to rotate. When the generator 200 is driven by the engine 100, the generator 200 can charge the battery pack. The electrical energy in the battery pack can be used to drive the electric motor 300 or to supply power to other electrical appliances in the vehicle.

[0032] The technical solution provided in this disclosure involves an engine 100 connected to an output shaft 4 via a planetary gear train 1, enabling the engine 100 to drive the output shaft 4 to rotate. By controlling the engagement and disengagement of the clutch 2 or brake 3, the transmission ratio of the planetary gear train 1 can be changed, thereby altering the gear position of the hybrid power system. An electric motor 300 is also connected to the output shaft 4, allowing the engine 100 to drive the output shaft 4 to rotate. Furthermore, the engine 100 is connected to a generator 200, enabling the engine 100 to drive the generator 200 to generate electricity, thereby supplying power to the hybrid power system. By controlling whether the engine 100 and the electric motor 300 are operating, the power source of the hybrid power system can be switched. Moreover, by controlling the engagement and disengagement of the clutch 2 or brake 3, the gear position of the hybrid power system can be changed. Compared with related technologies, the technical solution provided in this disclosure enriches the structural forms of hybrid power systems.

[0033] Furthermore, the connection between the first output shaft 100a of the engine 100 and the second output shaft 200a of the generator 200 can reduce the number of components in the hybrid power system, simplify the structure of the hybrid power system, and reduce the size of the hybrid power system.

[0034] In some examples, such as Figure 1 As shown, the hybrid power system also includes a first gear 5, a second gear 6, a third gear 7, and a fourth gear 8. The first gear 5 is coaxially connected to the planetary carrier 13, the first gear 5 meshes with the second gear 6, the second gear 6 is coaxially connected to the third gear 7, and the third gear 7 is drive-connected to the output shaft 4. The third output shaft 300a of the electric motor 300 is coaxially connected to the fourth gear 8.

[0035] When the engine 100 drives the planetary carrier 13 to rotate, the planetary carrier 13 drives the first gear 5 to rotate. The power of the first gear 5 is transmitted to the output shaft 4 in sequence through the second gear 6, the third gear 7 and the fourth gear 8, thereby driving the wheels to rotate through the output shaft 4.

[0036] When the motor 300 is working, the power of the motor 300 is transmitted to the output shaft 4 in sequence through the fourth gear 8, the second gear 6 and the third gear 7, thereby driving the wheel to rotate through the output shaft 4.

[0037] When the engine 100 and the electric motor 300 work simultaneously, the power of the engine 100 and the power of the electric motor 300 are coupled at the second gear 6, and then the power is transmitted together to the third gear 7 and the fourth gear 8, thereby driving the output shaft rear 4 to rotate.

[0038] In some examples, such as Figure 1 As shown, the diameter of the first gear 5 is smaller than the diameter of the second gear 6, the diameter of the third gear 7 is smaller than the diameter of the second gear 6, and the diameter of the fourth gear 8 is smaller than the diameter of the second gear 6.

[0039] The diameter of the first gear 5 is smaller than the diameter of the second gear 6, causing the rotational speed of the second gear 6 to be lower than that of the first gear 5, thus achieving speed reduction and torque increase between the first gear 5 and the second gear 6. Since the second gear 6 and the third gear 7 are coaxially connected, the rotational speeds of the second gear 6 and the third gear 7 are the same. Because the diameter of the third gear 7 is smaller than that of the second gear 6, and the third gear 7 is connected to the output shaft 4, the third gear 7 can increase the transmission ratio between the second gear 6 and the output shaft 4, thereby achieving speed reduction and torque increase between the second gear 6 and the output shaft 4. This increases the torque of the hybrid system on the output shaft 4, resulting in a greater driving force from the output shaft 4 to the wheels, which is beneficial for vehicle starting.

[0040] Similarly, the diameter of the fourth gear 8 is smaller than that of the second gear 6, causing the rotational speed of the second gear 6 to be lower than that of the fourth gear 8. This results in a reduction in speed and a increase in torque between the fourth gear 8 and the output shaft 4. This increases the torque exerted on the output shaft 4 by the hybrid system, thereby providing a greater driving force to the wheels and facilitating vehicle start-up.

[0041] Hybrid systems include multiple driving modes. The following is an illustrative description of the power transmission paths of a hybrid system under different driving modes.

[0042] In related technologies, engines are mostly single-speed driven, and engine drive is usually used when the vehicle is traveling at high speed.

[0043] In some examples, the hybrid system includes an engine low-gear drive mode and an engine high-gear drive mode.

[0044] like Figure 2As shown, in the low-gear drive mode, engine 100 operates, clutch 2 disengages, and brake 3 engages. At this time, engine 100 drives the second output shaft 200a of generator 200 to rotate, which in turn drives the sun gear 11 to rotate. The power from the sun gear 11 is sequentially transmitted to planet gears 12, planet carrier 13, and first gear 5. Then, first gear 5 drives second gear 6 to rotate, and the power from second gear 6 is transmitted to output shaft 4 via third gear 7, thereby driving the wheels to rotate. Since brake 3 is engaged, ring gear 14 remains stationary. The sun gear 11 drives planet carrier 13 to rotate via planet gears 12, causing the rotational speed of planet carrier 13 to be less than the rotational speed of sun gear 11. Therefore, the transmission ratio of planetary gear train 1 is greater than 1. That is, planetary gear train 1 acts as a speed reducer in this mode.

[0045] like Figure 3 As shown, in the high-gear drive mode, engine 100 operates, clutch 2 engages, and brake 3 disengages. At this time, engine 100 drives the second output shaft 200a of generator 200 to rotate, and the second output shaft 200a drives the sun gear 11 to rotate. The power from the sun gear 11 is sequentially transmitted to planet carrier 13, first gear 5, second gear 6, and third gear 7, thereby driving the wheels to rotate. Because clutch 2 is engaged, the sun gear 11 and planet carrier 13 are connected as a whole through clutch 2, making the transmission ratio between the sun gear 11 and planet carrier 13 1, allowing as much power from engine 100 as possible to be transmitted to output shaft 4.

[0046] As the above analysis shows, the transmission ratio of planetary gear train 1 is greater in the low-gear drive mode than in the high-gear drive mode. Therefore, the low-gear drive mode is suitable for low-speed driving conditions, while the high-gear drive mode is suitable for high-speed driving conditions. The hybrid system can switch between these two drive modes based on the current vehicle speed.

[0047] In hybrid systems of this technology, engine-driven mode is typically only suitable for high-speed driving, while pure electric drive mode is usually used for low-speed driving. For example, when starting the vehicle, the speed is low, so pure electric drive mode is used. However, when the vehicle's battery is too low, or the battery or electric motor malfunctions, pure electric drive mode cannot be used. If engine-driven mode is used directly, the vehicle will be difficult to start and the engine will stall. This will result in the vehicle being unable to start, requiring assistance to be provided.

[0048] Since the engine drive modes of this disclosure include engine low gear drive mode and engine high gear drive mode, in some examples, the hybrid system is in engine low gear drive mode when the vehicle is started.

[0049] When the engine starts, the planetary carrier 13 and the first gear 5 both rotate at 0. After the engine starts, the brake 3 gradually engages, reducing the rotational speed of the gear ring 14, which in turn gradually increases the rotational speed of the planetary carrier 13 and the first gear 5, driving the output shaft 4 to rotate until the brake 3 is fully engaged and the gear ring 14 is completely fixed.

[0050] In some examples, the hybrid system includes a pure electric drive mode.

[0051] In pure electric drive mode, such as Figure 4 As shown, when the electric motor 300 is working, the clutch 2 is disengaged, and the brake 3 is disengaged. The third output shaft 300a of the electric motor 300 drives the fourth gear 8 to rotate. The power of the fourth gear 8 is transmitted to the output shaft 4 in sequence through the second gear 6 and the third gear 7, thereby driving the vehicle.

[0052] When the vehicle is reversing, the electric motor 300 reverses, causing the wheels to rotate in the opposite direction.

[0053] It should be noted that the pure electric drive mode is suitable for vehicle start-up, low-speed driving, and when the vehicle has sufficient battery power. It can avoid the energy loss caused by frequent engine start-stop, thereby improving fuel efficiency.

[0054] When the vehicle starts, the hybrid system can choose either the low-gear engine drive mode or the pure electric drive mode, and this disclosure does not specifically limit this.

[0055] In some examples, the hybrid system includes both series drive mode and parallel drive mode.

[0056] In series drive mode, such as Figure 5 As shown, engine 100 drives generator 200 to rotate. Generator 200 and motor 300 are electrically connected. When motor 300 is working, clutch 2 is disengaged and brake 3 is disengaged. At this time, engine 100 drives generator 200 to generate electricity, and generator 200 transmits electrical energy to motor 300, thereby driving motor 300 to rotate. The third output shaft 300a of motor 300 drives fourth gear 8 to rotate. The power of fourth gear 8 is transmitted to output shaft 4 through second gear 6 and third gear 7 in sequence, thereby driving the vehicle. However, because clutch 2 is disengaged and brake 3 is disengaged, although the second output shaft 200a of generator 200 drives sun gear 11 to rotate, and sun gear 11 drives planet carrier 13 to rotate through planet gear 12, while simultaneously driving ring gear 14 to rotate freely, planetary gear system 1 only rotates but does not output torque. Therefore, the power of engine 100 and motor 300 is not transmitted to output shaft 4 through planetary gear system 1.

[0057] It should be noted that the series drive mode is suitable for situations where the vehicle's battery pack has a low charge level.

[0058] In parallel drive mode, both the engine 100 and the electric motor 300 are working, and one of the clutch 2 and the brake 3 is engaged while the other is disengaged. That is, the power from the engine 100 and the power from the electric motor 300 are simultaneously transmitted to the output shaft.

[0059] Among them, the parallel drive mode is suitable for vehicles traveling at medium and high speeds. It can provide sufficient power to the vehicle and greatly improve the smoothness of the vehicle, thus meeting the user's comfort requirements.

[0060] In some examples, the parallel drive mode includes a first gear and a second gear.

[0061] In first gear, such as Figure 6 As shown, clutch 2 disengages and brake 3 engages. At this time, engine 100 drives the second output shaft 200a of generator 200 to rotate, and the second output shaft 200a drives the sun gear 11 to rotate. The power of the sun gear 11 is transmitted sequentially to planet gear 12, planet carrier 13 and first gear 5. Then the first gear 5 drives the second gear 6 to rotate, and the power of the second gear 6 is transmitted to the third gear 7. The third output shaft 300a of electric motor 300 drives the fourth gear 8 to rotate, and the power of the fourth gear 8 is transmitted to the third gear 7 through the second gear 6. The power of engine 100 and electric motor 300 is coupled at the third gear 7 and transmitted to the output shaft 4, thereby driving the vehicle.

[0062] Since brake 3 is engaged, ring gear 14 remains stationary. Sun gear 11 drives planet carrier 13 to rotate via planet gears 12, causing the rotational speed of planet carrier 13 to be less than that of sun gear 11. Therefore, the gear ratio of planetary gear train 1 is greater than 1. In other words, planetary gear train 1 acts as a decelerator in this position. Thus, the first gear is suitable for low-speed vehicle operation, allowing the parallel drive mode to be used beyond high-speed driving conditions.

[0063] In second gear, such as Figure 7 As shown, clutch 2 is engaged and brake 3 is disengaged. Engine 100 drives the second output shaft 200a of generator 200 to rotate, and the second output shaft 200a drives the sun gear 11 to rotate. The power of the sun gear 11 is sequentially transmitted to planet carrier 13, first gear 5, second gear 6, and third gear 7. The third output shaft 300a of electric motor 300 drives the fourth gear 8 to rotate, and the power of the fourth gear 8 is transmitted to the third gear 7 through the second gear 6. The power of engine 100 and electric motor 300 is coupled at the third gear 7 and transmitted to output shaft 4, thereby driving the vehicle.

[0064] Since the clutch 2 is engaged, the sun gear 11 and the planet carrier 13 are connected as a whole through the clutch 2, so that the transmission ratio between the sun gear 11 and the planet carrier 13 is 1. The power of the engine 100 can be transmitted to the output shaft 4 as much as possible. Therefore, the second gear is suitable for high-speed driving of the vehicle.

[0065] Understandably, a hybrid system can switch between first and second gear based on the current vehicle speed.

[0066] In some examples, the hybrid system includes a parking power generation mode.

[0067] In parking generator mode, engine 100 drives generator 200 to operate, electric motor 300 is not operating, clutch 2 is disengaged, and brake 3 is disengaged. At this time, engine 100 drives generator 200 to generate electricity, which can be stored in the vehicle's battery pack. Because clutch 2 is disengaged and brake 3 is disengaged, although the second output shaft 200a of generator 200 drives sun gear 11 to rotate, and sun gear 11 drives planet carrier 13 to rotate via planet gear 12, while simultaneously driving ring gear 14 to idle, planetary gear train 1 only rotates but does not output torque. Therefore, the power from engine 100 and electric motor 300 is not transmitted to output shaft 4 through planetary gear train 1.

[0068] In some instances, when the electric motor 300 in the hybrid system fails, the hybrid system automatically switches to either high-gear or low-gear engine drive mode.

[0069] The hybrid power system provided in this embodiment selects either pure electric drive mode or low-gear engine drive mode when the vehicle starts. When the vehicle speed is high, it can use parallel drive mode or high-gear engine drive mode. When the vehicle has sufficient battery power, the hybrid power system can select pure electric drive mode. When the vehicle has low battery power, the hybrid power system can select series drive mode, low-gear engine drive mode, or high-gear engine drive mode. When the vehicle has low battery power and the vehicle is not moving, the hybrid power system can select parking charging mode, thereby allowing the generator 200 to charge the battery pack.

[0070] The technical solutions provided in this disclosure offer multiple driving modes, enabling the hybrid power system to meet different driving conditions of the vehicle. Furthermore, the hybrid power system has fewer components and smaller dimensions, which facilitates its placement within the vehicle and promotes miniaturization of the vehicle design.

[0071] This disclosure also provides a vehicle that includes the aforementioned hybrid power system.

[0072] This disclosure does not specifically limit the type of vehicle; the type of vehicle can be a sedan, bus, truck, sport utility vehicle (SUV), etc.

[0073] The vehicle provided in this embodiment of the disclosure features a hybrid power system capable of multiple driving modes. This allows the vehicle to switch between different driving modes according to various operating conditions, ensuring smooth operation under all circumstances. Furthermore, the small size of the hybrid power system reduces the space it occupies within the vehicle, thus facilitating the arrangement of other components and promoting miniaturization of the vehicle design.

[0074] The above description is merely an optional embodiment of this disclosure and is not intended to limit this disclosure. Any modifications, equivalent substitutions, improvements, etc., made within the principles of this disclosure should be included within the protection scope of this disclosure. This disclosure is intended to cover any variations, uses, or adaptations of this disclosure that follow the general principles of this disclosure and include common knowledge or customary technical means in the art not disclosed in this disclosure. The specification and embodiments are to be considered exemplary only, and the true scope and spirit of this disclosure are indicated by the scope of claims.

Claims

1. A hybrid power system, characterized in that, The hybrid power system includes an engine (100), a generator (200), an electric motor (300), a planetary gear system (1), a clutch (2), a brake (3), and an output shaft (4). The planetary gear train (1) includes a sun gear (11), planet gears (12), a planet carrier (13) and a ring gear (14). The planet gears (12) mesh with the sun gear (11) and with the inner ring of the ring gear (14). The planet carrier (13) is connected to the planet gears (12). The first output shaft (100a) of the engine (100) is connected to the second output shaft (200a) of the generator (200), the second output shaft (200a) is coaxially connected to the sun gear (11), the sun gear (11) and the planet carrier (13) are engaged or disengaged by the clutch (2), and the ring gear (14) is connected to the brake (3). The planetary carrier (13) is connected to the output shaft (4) via a drive, and the motor (300) is connected to the output shaft (4) via a drive.

2. The hybrid power system according to claim 1, characterized in that, The hybrid power system also includes a first gear (5), a second gear (6), a third gear (7) and a fourth gear (8). The first gear (5) and the planet carrier (13) are coaxially connected, the first gear (5) and the second gear (6) mesh, the second gear (6) and the third gear (7) are coaxially connected, and the third gear (7) and the output shaft (4) are connected in a transmission. The third output shaft (300a) of the electric motor (300) and the fourth gear (8) are coaxially connected.

3. The hybrid power system according to claim 2, characterized in that, The diameter of the first gear (5) is smaller than the diameter of the second gear (6), the diameter of the third gear (7) is smaller than the diameter of the second gear (6), and the diameter of the fourth gear (8) is smaller than the diameter of the second gear (6).

4. The hybrid power system according to claim 3, characterized in that, The hybrid system includes an engine low-gear drive mode and an engine high-gear drive mode; In the low-gear drive mode of the engine, the engine (100) is working, the clutch (2) is disengaged, and the brake (3) is engaged; In the high-speed drive mode of the engine, the engine (100) is working, the clutch (2) is engaged, and the brake (3) is disengaged.

5. The hybrid power system according to claim 4, characterized in that, When the vehicle is started, the hybrid system is in the low-gear drive mode of the engine.

6. The hybrid power system according to claim 3, characterized in that, The hybrid power system includes a pure electric drive mode; In the pure electric drive mode, the motor (300) operates, the clutch (2) disengages, and the brake (3) disengages.

7. The hybrid power system according to claim 3, characterized in that, The hybrid power system includes a series drive mode and a parallel drive mode; In the series drive mode, the engine (100) drives the generator (200) to rotate, the generator (200) and the electric motor (300) are electrically connected, the electric motor (300) is working, the clutch (2) is disengaged, and the brake (3) is disengaged; In the parallel drive mode, both the engine (100) and the electric motor (300) are working, and one of the clutch (2) and the brake (3) is engaged while the other is disengaged.

8. The hybrid power system according to claim 7, characterized in that, The parallel drive mode includes a first gear and a second gear; In the first gear position, the clutch (2) is disengaged and the brake (3) is engaged; In the second gear, the clutch (2) is engaged and the brake (3) is disengaged.

9. The hybrid power system according to claim 3, characterized in that, The hybrid power system includes a parking power generation mode; In the parking power generation mode, the engine (100) drives the generator (200) to work, the electric motor (300) does not work, the clutch (2) is disengaged, and the brake (3) is disengaged.

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

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