Power system and vehicle

Abstract

The present application relates to the technical field of vehicle layout, and in particular to a power system and a vehicle. The power system comprises a driving electric motor, a transmission mechanism, an output mechanism, an electric generator, an engine and a flywheel. The driving electric motor has a first output shaft. The transmission mechanism comprises a transmission shaft, which is in transmission connection with the first output shaft and the output mechanism. The engine is in transmission connection with the flywheel. The orthographic projection of the first output shaft on a first projection plane and the orthographic projection of the transmission shaft on the first projection plane are both spaced apart from the orthographic projection of the flywheel on the first projection plane, and the first projection plane is a plane perpendicular to the lengthwise direction of the engine. The electric generator has an input shaft, the input shaft is in transmission connection with the flywheel, and the orthographic projection of the input shaft on the first projection plane is located within the orthographic projection of the flywheel on the first projection plane. Therefore, the compactness of the power system can be improved, and the width of the power system is reduced, thereby reducing the volume of the power system.

Description

Power system and automobile

[0001] The present application claims priority to the Chinese patent application No. 202410434880.7, filed on April 11, 2024, and entitled "A power system and automobile", the entire content of which is incorporated herein by reference. TECHNICAL FIELD

[0002] The present application relates to the technical field of whole vehicle arrangement, and in particular to a power system and automobile. BACKGROUND

[0003] With the development of technology, the power source of the automobile is also increasing. There are already automobiles on the market that use electric machines and engines as power sources.

[0004] In addition to the power source, the power system of the automobile also has numerous transmission components. The transmission components can output the power of the power source to the wheels to drive the automobile to travel.

[0005] In the related art, the addition of the power source increases the volume of the power system. However, due to the small available space, the power system with an additional electric machine as a power source cannot be mounted on some vehicle models.

[0006] SUMMARY

[0007] The embodiments of the present application provide a power system and automobile, which can reduce the volume. The technical solution is as follows:

[0008] In one aspect, the embodiments of the present application provide a power system, which includes a drive electric machine, a transmission mechanism, an output mechanism, a generator, an engine and a flywheel. The drive electric machine has a first output shaft. The transmission mechanism includes a transmission shaft, which is in transmission connection with the first output shaft and the output mechanism. The engine is in transmission connection with the flywheel. The orthographic projection of the first output shaft in a first projection plane and the orthographic projection of the transmission shaft in the first projection plane are both separated from the orthographic projection of the flywheel in the first projection plane, and the first projection plane is a plane perpendicular to the length direction of the engine. The generator has an input shaft, which is in transmission connection with the flywheel, and the orthographic projection of the input shaft in the first projection plane is located within the orthographic projection of the flywheel in the first projection plane.

[0009] Optionally, the orthographic projection of the first output shaft in a second projection plane is separated from the orthographic projection of the flywheel in the second projection plane, the second projection plane is a plane perpendicular to the width direction of the engine, and at least a part of the output mechanism is located between the first output shaft and the flywheel.

[0010] Optionally, the output mechanism comprises a second output shaft, and the second output shaft is in driving connection with the transmission shaft.

[0011] Optionally, the second output shaft is separated from the flywheel in the orthographic projection of the first projection plane.

[0012] Optionally, the output mechanism comprises a first output gear, the first output gear is sleeved on the second output shaft and in driving connection with the second output shaft, the transmission mechanism comprises a first transmission gear, the first transmission gear is sleeved on the transmission shaft and in driving connection with the transmission shaft, and the first output gear is in meshing connection with the first transmission gear.

[0013] Optionally, the transmission shaft is located on the side away from the engine on the line connecting the center of the second output shaft and the center of the transmission shaft.

[0014] Optionally, the drive motor has a first input gear, the first input gear is sleeved on the first output shaft and in driving connection with the first output shaft, the transmission mechanism has a second transmission gear, the second transmission gear is sleeved on the transmission shaft and in driving connection with the transmission shaft, and the first input gear is in meshing connection with the second transmission gear.

[0015] Optionally, the generator has a second input gear, the second input gear is sleeved on the input shaft and in driving connection with the input shaft, the engine has a third output shaft and a second output gear, the third output shaft is in driving connection with the second output gear and the engine, and the second input gear is in meshing connection with the second output gear.

[0016] Optionally, the generator and the drive motor are located on the same side of the flywheel.

[0017] In another aspect, an automobile is provided, which comprises a power system, and the power system comprises a drive motor, a transmission mechanism, an output mechanism, a generator, an engine and a flywheel. The drive motor has a first output shaft. The transmission mechanism comprises a transmission shaft, and the transmission shaft is in driving connection with the first output shaft and the output mechanism. The engine is in driving connection with the flywheel. The orthographic projection of the first output shaft in a first projection plane and the orthographic projection of the transmission shaft in the first projection plane are both separated from the orthographic projection of the flywheel in the first projection plane, and the first projection plane is a plane perpendicular to the length direction of the engine. The generator has an input shaft, and the input shaft is in driving connection with the flywheel. The orthographic projection of the input shaft in the first projection plane is located in the orthographic projection of the flywheel in the first projection plane.

[0018] Optionally, the first output shaft is separated from the flywheel in the orthographic projection of the second projection plane, the second projection plane being a plane perpendicular to the width direction of the engine, and at least a part of the output mechanism is located between the first output shaft and the flywheel.

[0019] Optionally, the output mechanism comprises a second output shaft, and the second output shaft is in driving connection with the transmission shaft.

[0020] Optionally, the second output shaft is separated from the flywheel in the orthographic projection of the first projection plane.

[0021] Optionally, the output mechanism comprises a first output gear, the first output gear is sleeved on the second output shaft and in driving connection with the second output shaft, the transmission mechanism comprises a first transmission gear, the first transmission gear is sleeved on the transmission shaft and in driving connection with the transmission shaft, and the first output gear is in meshing connection with the first transmission gear.

[0022] Optionally, the transmission shaft is located on the side away from the engine on the line connecting the center of the second output shaft and the center of the transmission shaft.

[0023] The technical scheme provided by the embodiments of the present application has at least the following beneficial effects: the engine can drive the generator to generate electricity, and the generated electricity can be used to drive the motor to work. The motor can output power to the output mechanism through the transmission mechanism to drive the output mechanism to work. The orthographic projection of the input shaft in the first projection plane is located within the orthographic projection of the flywheel in the first projection plane, which is conducive to shortening the transmission path of the engine and the generator, and thus reducing the transmission parts of the power system and the volume of the power system. The orthographic projection of the first output shaft in the first projection plane and the orthographic projection of the transmission shaft in the first projection plane are both separated from the orthographic projection of the flywheel in the first projection plane, which is conducive to forming a space for arranging the transmission mechanism and the output mechanism in the width direction of the engine for the first output shaft and the flywheel, so as to improve the compactness of the power system and shorten the width of the power system, and thus reduce the volume of the power system. BRIEF DESCRIPTION OF DRAWINGS

[0024] In order to more clearly illustrate the technical schemes in the embodiments of the present application, the drawings needed in the embodiment description will be briefly introduced. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can be obtained by those skilled in the art without creative effort.

[0025] FIG. 1 is a structural schematic view of a power system according to an example embodiment of the present application;

[0026] Fig. 2 is a front view of a power system according to another exemplary embodiment of the present application;

[0027] Fig. 3 is a side view of a power system according to an exemplary embodiment of the present application.

[0028] The reference signs in the figures respectively represent:

[0029] 1, drive motor; 11, first output shaft; 12, first input gear;

[0030] 2, transmission mechanism; 21, transmission shaft; 22, first transmission gear; 23, second transmission gear;

[0031] 3, output mechanism; 31, second output shaft; 32, first output gear;

[0032] 4, generator; 41, input shaft; 42, second input gear;

[0033] 5, engine; 51, third output shaft; 52, second output gear;

[0034] 6, flywheel. DETAILED DESCRIPTION

[0035] To make the objectives, technical solutions and advantages of the present application clearer, the embodiments of the present application will be further described in detail below with reference to the drawings. Obviously, the described embodiments are only some of the embodiments of the present application, but not all the embodiments of the present application. Based on the embodiments in the present application, all the other embodiments obtained by those of ordinary skill in the art without creative work fall within the scope of the present application.

[0036] Unless otherwise defined, all the technical terms used in the embodiments of the present application have the same meanings as those commonly understood by those of ordinary skill in the art.

[0037] To make the technical solutions and advantages of the present application clearer, the embodiments of the present application will be further described in detail below with reference to the drawings.

[0038] The first aspect of the present application provides a power system as shown in FIG. 1, FIG. 2 and FIG. 3, the power system comprising a driving motor 1, a transmission mechanism 2, an output mechanism 3, a generator 4, an engine 5 and a flywheel 6. The driving motor 1 has a first output shaft 11. The transmission mechanism 2 comprises a transmission shaft 21, the transmission shaft 21 being in transmission connection with the first output shaft 11 and the output mechanism 3. The engine 5 is in transmission connection with the flywheel 6. The first output shaft 11 is separated from the flywheel 6 in the first projection plane, and the transmission shaft 21 is separated from the flywheel 6 in the first projection plane, the first projection plane being a plane perpendicular to the length direction of the engine 5. The generator 4 has an input shaft 41, the input shaft 41 being in transmission connection with the flywheel 6, and the input shaft 41 in the first projection plane is located in the flywheel 6 in the first projection plane.

[0039] It can be understood that the engine 5 can drive the generator 4 to generate electricity, and the generated electricity can be used to drive the driving motor 1 to work. The driving motor 1 can output power to the output mechanism 3 through the transmission mechanism 2 to drive the output mechanism 3 to work. The input shaft 41 in the first projection plane is located in the flywheel 6 in the first projection plane, which is beneficial to shorten the transmission path of the engine 5 and the generator 4, and further reduce the transmission parts of the power system of the present application, and thus reduce the volume of the power system. The first output shaft 11 in the first projection plane is separated from the flywheel 6 in the first projection plane, and the transmission shaft 21 in the first projection plane is separated from the flywheel 6 in the first projection plane, which is beneficial to form a space for arranging the transmission mechanism 2 and the output mechanism 3 in the width direction of the engine 5 by the first output shaft 11 and the flywheel 6, so that the compactness of the engine 5 can be improved, the width of the power system can be shortened, and the volume of the power system can be reduced.

[0040] In the embodiment of the present application, the width direction of the vehicle body is generally the same as the crankshaft axial length direction of the engine 5.

[0041] In the related art, when the whole vehicle is designed, the width of the front compartment longitudinal beam of the vehicle body is generally limited by the structural strength and other requirements, and the width cannot be changed. At the same time, the width requirement of the vehicle body is also relatively fixed and cannot be changed in subsequent design. The above two factors result in a narrow width space of the vehicle body.

[0042] Since the power system mainly uses an internal combustion engine as the power source, the power source is relatively small, and thus the width requirement of the vehicle body is not high and can meet the width requirement of the vehicle body. With the addition of the motor as the power source to the power system, and the power of the motor being related to the power of the engine 5, the motor needs to be arranged in the width direction of the engine 5, which increases the width of the power system.

[0043] However, due to the arrangement requirements and safety performance requirements of other components, the width space of the vehicle body cannot increase with the increase of the width. This results in certain difficulties in arranging the power system on the whole vehicle.

[0044] The power system of the present application reduces the width of the power system and improves its compactness by improving the positional relationship of the driving motor 1 and the generator 4 relative to the engine 5, thereby reducing the volume and the difficulty of arrangement on the vehicle body.

[0045] In the embodiment of the present application, the driving motor 1 can be connected to the transmission mechanism 2 through gear engagement or the like. The driving motor 1 can drive the first output shaft 11 to rotate by generating a changing electromagnetic field, and the driving transmission mechanism 2 outputs power to the output mechanism 3.

[0046] In the embodiment of the present application, the transmission mechanism 2 can be connected to the output mechanism 3 through gear engagement or the like.

[0047] In the embodiment of the present application, the output mechanism 3, as a driving component of power, can include a wheel, and the power output by the transmission mechanism 2 can drive the wheel to rotate, thereby completing the normal operation of the power system of the present application.

[0048] In the embodiment of the present application, the engine 5 can serve as a power source of the generator 4, and converts the kinetic energy generated by fuel into electric energy of the generator 4 by driving the generator 4 to work. The generated electric energy can be stored in a battery to drive the motor 1 or other components of the vehicle to work, thereby achieving the functions necessary for normal driving of the vehicle, or can directly drive the driving motor 1 to work.

[0049] In the embodiment of the present application, the driving motor 1 can be electrically connected to the generator 4 to directly use the electric energy generated by the generator 4.

[0050] In the embodiment of the present application, the flywheel 6 can temporarily store the excess kinetic energy generated by the engine 5 during work as an energy storage component, and can also serve as a starter to provide a certain amount of kinetic energy for starting the engine 5 until the engine 5 can drive the generator 4 to work by fuel.

[0051] In the embodiment of the present application, the first projection plane is a plane perpendicular to the length direction of the engine 5. The length direction of the engine 5 can be the axial direction of the crankshaft of the engine 5. The crankshaft includes a plurality of parallel shaft segments, and thus the axial direction of the crankshaft can refer to the axial direction of any one of the shaft segments.

[0052] In the embodiment of the present application, the orthographic projection of the first output shaft 11 in the first projection plane and the orthographic projection of the transmission shaft 21 in the first projection plane are both separated from the orthographic projection of the flywheel 6 in the first projection plane, which is conducive to forming a space for arranging the transmission mechanism 2 and the output mechanism 3 in the width direction of the engine 5 for the first output shaft 11 and the flywheel 6. The driving motor 1 is used as a power source, which needs to be connected in transmission with the transmission mechanism 2, and the transmission mechanism 2 generally needs to adjust the power torque generated by the driving motor 1 during work, so that a considerable space is needed around the first output shaft 11 for arranging the transmission mechanism 2 and its corresponding auxiliary components. The orthographic projection of the first output shaft 11 in the first projection plane and the orthographic projection of the transmission shaft 21 in the first projection plane are both separated from the orthographic projection of the flywheel 6 in the first projection plane, which is conducive to arranging these auxiliary components between the first output shaft 11 and the flywheel 6, which can improve the compactness of the power system of the present application. In addition, the driving motor 1 can be closer to the flywheel 6 in the width direction of the engine 5, which can improve the compactness of the power system of the present application and is conducive to reducing the volume of the power system of the present application.

[0053] In the embodiment of the present application, the orthographic projection of the input shaft 41 in the first projection plane is located within the orthographic projection of the flywheel 6 in the first projection plane, which is conducive to shortening the transmission path of the engine 5 and the generator 4, thereby reducing the transmission parts of the power system of the present application and reducing its volume. Among them, the generator 4 is used as a driving component of the engine 5, without complex working conditions, so the power requirement of the engine 5 is relatively low, and the power of the engine 5 does not need to be adjusted. This makes the power transmission path between the engine 5 and the generator 4 shorter, so that the orthographic projection of the input shaft 41 in the first projection plane is located within the orthographic projection of the flywheel 6 in the first projection plane, which can improve the compactness of the power system of the present application, and also adapts to the transmission requirements of the engine 5 and the engine 5.

[0054] In the embodiment of the present application, the transmission path between the driving motor 1 and the output mechanism 3 is longer for the driving motor 1 which needs to adjust power to adapt to the working condition of the output mechanism 3, and the transmission path between the generator 4 and the engine 5 is shorter for the generator 4 which does not need to adjust power. Therefore, the first output shaft 11 of the driving motor 1 with longer transmission path is separated from the flywheel 6 in the first projection plane, and the transmission shaft 21 is also separated from the flywheel 6 in the first projection plane, which can avoid the interference of the engine 5, and is also beneficial to arrange the transmission mechanism 2 and the output mechanism 3 close to the flywheel 6, and improve the compactness of the power system of the present application. The input shaft 41 of the generator 4 with shorter transmission path is located in the flywheel 6 in the first projection plane, which can meet the transmission requirement and improve the compactness of the power system of the present application. In summary, for the power system of the present application, the driving motor 1 and the generator 4 have the same working principle and similar structure, but the positions of the driving motor 1 and the generator 4 are determined according to the working requirements.

[0055] In the embodiment of the present application, the width of the power system mainly includes the width of the generator 4, the length of the input shaft 41, the gap between the input shaft 41 and the flywheel 6, the thickness of the flywheel 6, the gap between the flywheel 6 and the engine 5, and the width of the engine 5. The sum of the values of the above parameters can be 350mm, 360mm, 365mm or 370mm.

[0056] In the embodiment of the present application, the driving motor 1 has the first output shaft 11. The driving motor 1 and the first output shaft 11 can be connected by a shaft coupling. The end of the first output shaft 11 away from the driving motor 1 can be provided with a bearing, and the bearing is used to connect with other components to support the first output shaft 11 so that the first output shaft 11 can rotate.

[0057] In the embodiment of the present application, the generator 4 has the input shaft 41. The generator 4 and the input shaft 41 can be connected by a shaft coupling. The end of the input shaft 41 away from the generator 4 can be provided with a bearing, and the bearing is used to connect with other components to support the input shaft 41 so that the input shaft 41 can rotate.

[0058] In the embodiment of the present application, the transmission mechanism 2 includes the transmission shaft 21. The end of the transmission shaft 21 can be provided with a bearing, and the bearing is used to connect with other components to support the transmission shaft 21 so that the transmission shaft 21 can rotate.

[0059] In some embodiments of the present application, the power transmission between the output mechanism 3 and the first output shaft 11 is achieved through the transmission mechanism 2. Due to the presence of the transmission mechanism 2, the output mechanism 3 is generally located relatively lower in the power system of the present application (i.e. the position of the crankshaft of the engine 5). As shown in FIG. 2, the front projection of the first output shaft 11 in the second projection plane is separated from the front projection of the flywheel 6 in the second projection plane, and at least a part of the output mechanism 3 is located between the first output shaft 11 and the flywheel 6. Such an arrangement is conducive to improving the compactness of the power system of the present application.

[0060] In the embodiments of the present application, the flywheel 6 is arranged with the input shaft 41 of the generator 4 in the direction of the second projection plane, so that the front projection of the first output shaft 11 in the second projection plane is separated from the front projection of the flywheel 6 in the second projection plane, which is conducive to reducing the mutual interference between the input shaft 41 and the transmission mechanism 2, and at the same time, at least a part of the output mechanism 3 is located between the first output shaft 11 and the flywheel 6, which is conducive to shortening the length of the power system to reduce the volume of the power system of the present application.

[0061] In the embodiments of the present application, the width direction of the engine 5 can be the radial direction of the crankshaft of the engine 5. The crankshaft includes a plurality of parallel shaft segments, so the axial direction of the crankshaft can refer to the radial direction of any one of the shaft segments.

[0062] In some embodiments of the present application, as shown in FIG. 2, the output mechanism 3 includes a second output shaft 31, and the second output shaft 31 is in driving connection with the transmission shaft 21.

[0063] In the embodiments of the present application, the power transmission between the second output shaft 31 and the transmission shaft 21 can be achieved through rotation. The transmission shaft 21 is in driving connection with the output shaft, which is conducive to the second output shaft 31 receiving and adjusting the torque and rotational speed from the transmission shaft 21, and then outputting them to the working components to realize the operation of the power system.

[0064] In the embodiments of the present application, the end of the second output shaft 31 can be provided with a bearing for connecting with other components to support the second output shaft 31 so that the second output shaft 31 can rotate.

[0065] In some embodiments of the present application, as shown in FIG. 2, the front projection of the second output shaft 31 in the first projection plane is separated from the front projection of the flywheel 6 in the first projection plane.

[0066] In the embodiments of the present application, the output mechanism 3 is used to realize the output of power, and generally has more components. The normal projection of the second output shaft 31 in the first projection plane is separated from the normal projection of the flywheel 6 in the first projection plane, which is beneficial to arranging corresponding components between the output mechanism 3 and the flywheel 6, and thus the compactness of the power system of the present application can be improved.

[0067] In some embodiments of the present application, as shown in FIG. 2, the output mechanism 3 includes a first output gear 32, which is sleeved on the second output shaft 31 and is in transmission connection with the second output shaft 31, the transmission mechanism 2 includes a first transmission gear 22, which is sleeved on the transmission shaft 21 and is in transmission connection with the transmission shaft 21, and the first output gear 32 is in meshing with the first transmission gear 22.

[0068] In the embodiments of the present application, the first transmission gear 22 is in meshing with the first output gear 32, so that the power received by the transmission shaft 21 from the driving motor 1 can be transmitted to the first output gear 32 through rotation, thereby realizing the transmission of power. The first transmission gear 22 and the first output gear 32 can also respectively adjust the number of teeth to correspondingly adjust the torque and the rotation speed of the power output by the output mechanism 3.

[0069] In the embodiments of the present application, the driving motor 1, the transmission mechanism 2 and the output mechanism 3 are arranged in sequence along the height direction of the power system of the present application, wherein the normal projection of the first output gear 32 in the first projection plane partially overlaps the normal projection of the flywheel 6 in the first projection plane.

[0070] In the embodiments of the present application, the number of teeth of the first output gear 32 is greater than the number of teeth of the first transmission gear 22, so as to adjust the output power of the first transmission gear 22 to reduce the rotation speed and increase the torque. The specific number of teeth of the first output gear 32 and the specific number of teeth of the first transmission gear 22 should be determined according to actual conditions.

[0071] In the embodiments of the present application, the first output gear 32 can be in transmission connection with the second output shaft 31 through key connection, so that the second output shaft 31 can drive the first output gear 32 to rotate. The first output gear 32 can also be in transmission connection with the second output shaft 31 through welding or one-piece forming process, so that the second output shaft 31 can drive the first output gear 32 to rotate.

[0072] In the embodiments of the present application, the first transmission gear 22 can be in transmission connection with the transmission shaft 21 through key connection, so that the transmission shaft 21 can drive the first transmission gear 22 to rotate. The first transmission gear 22 can also be in transmission connection with the transmission shaft 21 through welding or one-piece forming process, so that the transmission shaft 21 can drive the first transmission gear 22 to rotate.

[0073] In some embodiments of the present application, the transmission shaft 21 is located on the side away from the engine 5 along the line connecting the center of the second output shaft 31 and the center of the transmission shaft 21, as shown in FIG. 3.

[0074] In the embodiments of the present application, the transmission shaft 21 is located away from the engine 5, which is conducive to arranging corresponding transmission components on the transmission shaft 21 to transmit and adjust the power from the drive motor 1 to adapt to the working conditions of the power system of the present application.

[0075] In some embodiments of the present application, the drive motor 1 has a first input gear 12 sleeved on the first output shaft 11 and connected in transmission with the first output shaft 11, the transmission mechanism 2 has a second transmission gear 23 sleeved on the transmission shaft 21 and connected in transmission with the transmission shaft 21, and the first input gear 12 is engaged with the second transmission gear 23, as shown in FIG. 3.

[0076] In the embodiments of the present application, the engagement of the first input gear 12 and the second transmission gear 23 can transmit the power of the drive motor 1 to the second transmission gear 23 through rotation to achieve power transmission. The first input gear 12 and the second transmission gear 23 can also be adjusted in tooth number respectively to preliminarily adjust the torque and rotational speed of the power of the transmission mechanism 2, which is conducive to subsequent adjustment of the power.

[0077] In the embodiments of the present application, the second transmission gear 23 has a larger number of teeth than the first input gear 12 to adjust the output power of the first input gear 12 so that the rotational speed is reduced and the torque is increased. The specific number of teeth of the second transmission gear 23 and the specific number of teeth of the first input gear 12 should be determined according to actual conditions.

[0078] In the embodiments of the present application, the first input gear 12 can be connected in transmission with the first output shaft 11 by means of key connection, so that the first output shaft 11 can drive the first input gear 12 to rotate. The first input gear 12 can also be connected in transmission with the first output shaft 11 by means of welding or integral molding process, so that the first output shaft 11 can drive the first input gear 12 to rotate.

[0079] In the embodiments of the present application, the second transmission gear 23 can be connected in transmission with the transmission shaft 21 by means of key connection, so that the second transmission gear 23 can drive the transmission shaft 21 to rotate. The second transmission gear 23 can also be connected in transmission with the transmission shaft 21 by means of welding or integral molding process, so that the second transmission gear 23 can drive the transmission shaft 21 to rotate.

[0080] In some embodiments of the present application, as shown in Fig. 3, the generator 4 has a second input gear 42 sleeved on the input shaft 41 and connected in transmission with the input shaft 41, the engine 5 has a third output shaft 51 and a second output gear 52, the third output shaft 51 is connected in transmission with the second output gear 52 and the engine 5, and the second input gear 42 is engaged with the second output gear 52.

[0081] In the embodiments of the present application, the second output gear 52 is engaged with the second input gear 42, so that the power of the engine 5 can be transmitted to the second input gear 42 through rotation, thereby achieving power transmission. The second output gear 52 and the second input gear 42 can also be adjusted in gear number respectively, so as to adjust the torque and the rotation speed of the power of the engine 5, thereby facilitating to improve the efficiency of the engine 5 in driving the generator 4 to operate through the third output shaft 51.

[0082] In the embodiments of the present application, the end of the third output shaft 51 away from the engine 5 can be provided with a bearing for being connected with other components to support the third output shaft 51, so that the third output shaft 51 can rotate.

[0083] In the embodiments of the present application, the second output gear 52 has a larger number of teeth than the second input gear 42, so as to adjust the output power of the second output gear 52, increase the rotation speed and reduce the torque, thereby improving the efficiency of power generation. The specific number of teeth of the second output gear 52 and the specific number of teeth of the second input gear 42 should be determined according to actual conditions.

[0084] In the embodiments of the present application, the second input gear 42 can be connected in transmission with the input shaft 41 through key connection, so that the input shaft 41 can drive the second input gear 42 to rotate. The second input gear 42 can also be connected in transmission with the input shaft 41 through welding or one-piece forming process, so that the input shaft 41 can drive the second input gear 42 to rotate.

[0085] In the embodiments of the present application, the second output gear 52 can be connected in transmission with the third output shaft 51 through key connection, so that the second output gear 52 can drive the third output shaft 51 to rotate. The second output gear 52 can also be connected in transmission with the third output shaft 51 through welding or one-piece forming process, so that the second output gear 52 can drive the third output shaft 51 to rotate.

[0086] In some embodiments of the present application, the generator 4 and the driving motor 1 are located on the same side of the flywheel 6.

[0087] It can be understood that the generator 4 and the driving motor 1 located on the same side facilitate to improve the compactness of the power system of the present application, so as to reduce the volume.

[0088] The second aspect of the present application provides an automobile, which comprises a power system. The power system comprises a driving motor 1, a transmission mechanism 2, an output mechanism 3, a generator 4, an engine 5 and a flywheel 6. The driving motor 1 has a first output shaft 11. The transmission mechanism 2 comprises a transmission shaft 21, which is in transmission connection with the first output shaft 11 and the output mechanism 3. The engine 5 is in transmission connection with the flywheel 6. The normal projection of the first output shaft 11 in a first projection plane and the normal projection of the transmission shaft 21 in the first projection plane are both separated from the normal projection of the flywheel 6 in the first projection plane, and the first projection plane is a plane perpendicular to the length direction of the engine 5. The generator 4 has an input shaft 41, which is in transmission connection with the flywheel 6, and the normal projection of the input shaft 41 in the first projection plane is located in the normal projection of the flywheel 6 in the first projection plane.

[0089] It can be understood that the engine 5 can drive the generator 4 to generate electricity, and the generated electricity can be used to drive the driving motor 1 to work. The driving motor 1 can output power to the output mechanism 3 through the transmission mechanism 2 to drive the output mechanism 3 to work. The normal projection of the input shaft 41 in the first projection plane is located in the normal projection of the flywheel 6 in the first projection plane, which is beneficial to shorten the transmission path of the engine 5 and the generator 4, and thus reduce the transmission parts of the power system of the present application, and reduce the volume of the power system. The normal projection of the first output shaft 11 in the first projection plane and the normal projection of the transmission shaft 21 in the first projection plane are both separated from the normal projection of the flywheel 6 in the first projection plane, which is beneficial to form a space for arranging the transmission mechanism 2 and the output mechanism 3 in the width direction of the engine 5 by the first output shaft 11 and the flywheel 6, so that the compactness of the engine 5 can be improved, the width of the power system can be shortened, and the volume of the power system can be reduced.

[0090] In some embodiments of the present application, the power transmission between the output mechanism 3 and the first output shaft 11 is realized through the transmission mechanism 2. Due to the existence of the transmission mechanism 2, the output mechanism 3 is generally located at a relatively lower position in the power system of the present application (i.e. the position of the crankshaft of the engine 5). As shown in FIG. 2, the normal projection of the first output shaft 11 in a second projection plane is separated from the normal projection of the flywheel 6 in the second projection plane, the second projection plane is a plane perpendicular to the width direction of the engine 5, and at least a part of the output mechanism 3 is located between the first output shaft 11 and the flywheel 6. Such arrangement is beneficial to improve the compactness of the power system of the present application.

[0091] In the embodiments of the present application, the input shaft 41 of the generator 4 is arranged in the direction of the second projection plane of the flywheel 6, so that the normal projection of the first output shaft 11 in the second projection plane is separated from the normal projection of the flywheel 6 in the second projection plane, which is beneficial to reduce the mutual interference between the input shaft 41 and the transmission mechanism 2, and at the same time, at least a part of the output mechanism 3 is located between the first output shaft 11 and the flywheel 6, which is beneficial to shorten the length of the power system, so as to reduce the volume of the power system of the present application.

[0092] In the embodiment of the present application, the width direction of the engine 5 can be the radial direction of the crankshaft of the engine 5. The crankshaft includes multiple parallel shaft segments, and thus the axial direction of the crankshaft can refer to the radial direction of any one of the shaft segments.

[0093] In some embodiments of the present application, as shown in FIG. 2, the output mechanism 3 includes a second output shaft 31, which is in driving connection with the transmission shaft 21.

[0094] In the embodiment of the present application, the power transmission between the second output shaft 31 and the transmission shaft 21 can be achieved through rotation. The transmission shaft 21 is in driving connection with the output shaft, which is conducive to the second output shaft 31 receiving and adjusting the torque and rotational speed from the transmission shaft 21, and then outputting them to the working components to realize the operation of the power system.

[0095] In the embodiment of the present application, the end of the second output shaft 31 can be provided with a bearing, which is used to connect with other components to support the second output shaft 31 so that the second output shaft 31 can rotate.

[0096] In some embodiments of the present application, as shown in FIG. 2, the orthographic projection of the second output shaft 31 in the first projection plane is separated from the orthographic projection of the flywheel 6 in the first projection plane.

[0097] In the embodiment of the present application, the output mechanism 3 generally has more components to realize the output of power. The orthographic projection of the second output shaft 31 in the first projection plane is separated from the orthographic projection of the flywheel 6 in the first projection plane, which is conducive to the output mechanism 3 arranging corresponding components between the output shaft and the flywheel 6, so as to improve the compactness of the power system of the present application.

[0098] In some embodiments of the present application, as shown in FIG. 2, the output mechanism 3 includes a first output gear 32, which is sleeved on the second output shaft 31 and in driving connection with the second output shaft 31, and the transmission mechanism 2 includes a first transmission gear 22, which is sleeved on the transmission shaft 21 and in driving connection with the transmission shaft 21, and the first output gear 32 is in meshing connection with the first transmission gear 22.

[0099] In the embodiment of the present application, the first transmission gear 22 and the first output gear 32 are in meshing connection, which can transmit the power received by the transmission shaft 21 from the driving motor 1 to the first output gear 32 through rotation to realize the transmission of power. The first transmission gear 22 and the first output gear 32 can also respectively adjust the number of teeth to correspondingly adjust the torque and rotational speed of the power output by the output mechanism 3.

[0100] In the embodiment of the present application, the driving motor 1, the transmission mechanism 2 and the output mechanism 3 are arranged along the height direction of the power system of the present application in sequence, wherein the normal projection of the first output gear 32 in the first projection plane partially overlaps the normal projection of the flywheel 6 in the first projection plane.

[0101] In the embodiment of the present application, the number of teeth of the first output gear 32 is greater than the number of teeth of the first transmission gear 22, so as to adjust the output power of the first transmission gear 22, and reduce the rotating speed and increase the torque. The specific number of teeth of the first output gear 32 and the specific number of teeth of the first transmission gear 22 should be determined according to the actual situation.

[0102] In the embodiment of the present application, the first output gear 32 can be connected to the second output shaft 31 through a key connection to form a transmission connection, so that the second output shaft 31 can drive the first output gear 32 to rotate. The first output gear 32 can also be connected to the second output shaft 31 through welding or one-piece forming process to form a transmission connection, so that the second output shaft 31 can drive the first output gear 32 to rotate.

[0103] In the embodiment of the present application, the first transmission gear 22 can be connected to the transmission shaft 21 through a key connection to form a transmission connection, so that the transmission shaft 21 can drive the first transmission gear 22 to rotate. The first transmission gear 22 can also be connected to the transmission shaft 21 through welding or one-piece forming process to form a transmission connection, so that the transmission shaft 21 can drive the first transmission gear 22 to rotate.

[0104] In some embodiments of the present application, as shown in FIG. 3, the transmission shaft 21 is located on the side away from the engine 5 of the line connecting the center of the second output shaft 31 and the center of the transmission shaft 21.

[0105] In the embodiment of the present application, the transmission shaft 21 is arranged away from the engine 5, which is conducive to arranging corresponding transmission components on the transmission shaft 21 to transmit and adjust the power from the driving motor 1 to adapt to the working condition of the power system of the present application.

[0106] Those skilled in the art can understand that all or part of the steps of the above-mentioned embodiments can be completed by hardware, or by a program instructing relevant hardware, and the program can be stored in a computer readable storage medium, such as a read-only memory, a magnetic disk or an optical disk.

[0107] The above description is only the preferred embodiment of the present application, and is not intended to limit the present application. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A power system, characterized in that: The power system comprises a drive motor (1), a transmission mechanism (2), an output mechanism (3), a generator (4), an engine (5) and a flywheel (6), wherein: The drive motor (1) has a first output shaft (11); The transmission mechanism (2) comprises a transmission shaft (21), and the transmission shaft (21) is transmission-connected to the first output shaft (11) and the output mechanism (3); The engine (5) is drivingly connected to the flywheel (6); The orthographic projection of the first output shaft (11) on a first projection plane and the orthographic projection of the transmission shaft (21) on the first projection plane are both separated from the orthographic projection of the flywheel (6) on the first projection plane, and the first projection plane is a plane perpendicular to the length direction of the engine (5); The generator (4) has an input shaft (41), the input shaft (41) is drivingly connected to the flywheel (6), and the orthographic projection of the input shaft (41) on the first projection plane is located within the orthographic projection of the flywheel (6) on the first projection plane.

2. The power system according to claim 1, characterized in that: The orthographic projection of the first output shaft (11) on a second projection plane is separated from the orthographic projection of the flywheel (6) on the second projection plane, the second projection plane being a plane perpendicular to the width direction of the engine (5), and at least a portion of the output mechanism (3) is located between the first output shaft (11) and the flywheel (6).

3. The power system according to claim 1, characterized in that: The output mechanism (3) comprises a second output shaft (31), and the second output shaft (31) is transmission-connected to the transmission shaft (21).

4. The power system according to claim 3, characterized in that: The orthographic projection of the second output shaft (31) on the first projection plane is separated from the orthographic projection of the flywheel (6) on the first projection plane.

5. The power system according to claim 3, characterized in that: The output mechanism (3) comprises a first output gear (32), the first output gear (32) being sleeved on the second output shaft (31) and being transmission-connected to the second output shaft (31); the transmission mechanism (2) comprises a first transmission gear (22), the first transmission gear (22) being sleeved on the transmission shaft (21) and being transmission-connected to the transmission shaft (21); the first output gear (32) is meshed with the first transmission gear (22).

6. The power system according to claim 3, characterized in that: The transmission shaft (21) is located on a side of a line connecting the center of the second output shaft (31) and the center of the transmission shaft (21) away from the engine (5).

7. The power system according to claim 1, characterized in that: The drive motor (1) has a first input gear (12), which is sleeved on the first output shaft (11) and is transmission-connected to the first output shaft (11); the transmission mechanism (2) has a second transmission gear (23), which is sleeved on the transmission shaft (21) and is transmission-connected to the transmission shaft (21); the first input gear (12) is meshed with the second transmission gear (23).

8. The power system according to claim 1, characterized in that: The generator (4) has a second input gear (42), which is sleeved on the input shaft (41) and is transmission-connected to the input shaft (41). The engine (5) has a third output shaft (51) and a second output gear (52), which is transmission-connected to the second output gear (52) and the engine (5), and the second input gear (42) is meshed with the second output gear (52).

9. The power system according to claim 1, characterized in that: The generator (4) and the drive motor (1) are located on the same side of the flywheel (6).

10. An automobile, characterized in that: The automobile comprises a power system, wherein the power system comprises a drive motor (1), a transmission mechanism (2), an output mechanism (3), a generator (4), an engine (5) and a flywheel (6), wherein: The drive motor (1) has a first output shaft (11); The transmission mechanism (2) comprises a transmission shaft (21), and the transmission shaft (21) is transmission-connected to the first output shaft (11) and the output mechanism (3); The engine (5) is drivingly connected to the flywheel (6); The orthographic projection of the first output shaft (11) on a first projection plane and the orthographic projection of the transmission shaft (21) on the first projection plane are both separated from the orthographic projection of the flywheel (6) on the first projection plane, and the first projection plane is a plane perpendicular to the length direction of the engine (5); The generator (4) has an input shaft (41), the input shaft (41) is drivingly connected to the flywheel (6), and the orthographic projection of the input shaft (41) on the first projection plane is located within the orthographic projection of the flywheel (6) on the first projection plane.

11. The automobile according to claim 10, characterized in that The orthographic projection of the first output shaft (11) on a second projection plane is separated from the orthographic projection of the flywheel (6) on the second projection plane, the second projection plane being a plane perpendicular to the width direction of the engine (5), and at least a portion of the output mechanism (3) is located between the first output shaft (11) and the flywheel (6).

12. The automobile according to claim 10, characterized in that The output mechanism (3) comprises a second output shaft (31), and the second output shaft (31) is transmission-connected to the transmission shaft (21).

13. The automobile according to claim 12, characterized in that The orthographic projection of the second output shaft (31) on the first projection plane is separated from the orthographic projection of the flywheel (6) on the first projection plane.

14. The automobile according to claim 12, characterized in that The output mechanism (3) includes a first output gear (32), the first output gear (32) is sleeved on the second output shaft (31) and is transmission-connected to the second output shaft (31); the transmission mechanism (2) includes a first transmission gear (22), the first transmission gear (22) is sleeved on the transmission shaft (21) and is transmission-connected to the transmission shaft (21); the first output gear (32) is meshed with the first transmission gear (22).

15. The automobile according to claim 12, characterized in that The transmission shaft (21) is located on a side of a line connecting the center of the second output shaft (31) and the center of the transmission shaft (21) away from the engine (5).

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