Range-extending type power system and vehicle

Abstract

The embodiment of the utility model provides a range extending type power system and a vehicle, and belongs to the technical field of vehicles. The extended-range power system includes: an engine; the input end of the generator is in dynamic coupling connection with the output end of the engine, and the generator is electrically connected with the battery; the driving motor is electrically connected with the battery; the speed reducer is connected with the engine or the driving motor; the speed reducer is mounted on the bearing seat; the engine, the generator, the driving motor, the speed reducer and the bearing seat are mounted on the mounting shell; at least one of the engine, the generator, the driving motor, the speed reducer, the non-moving part of the bearing seat and the mounting shell is provided with a cavity, and a plurality of movable damping particles are arranged in the cavity. According to the embodiment of the invention, vibration and noise generated in the operation process of the extended-range power system can be reduced, and the stability of the system is improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of vehicles, and more particularly, to a range-extending power system and a vehicle. BACKGROUND

[0002] In an electric vehicle, the impact of the range-extending power system when starting and stopping is large, resulting in large vibration and noise transmitted to the vehicle body. In the related art, a viscoelastic damping filler and a particle damping are usually used for vibration reduction at the bottom of an electric drive controller, but the viscoelastic material is not resistant to high temperature and is prone to aging, and at the same time, it cannot solve the problem of large vibration of the motor reducer and the range-extender housing, and there is room for improvement. CONTENT OF THE UTILITY MODEL

[0003] The present application provides a range-extending power system and a vehicle, which can effectively improve the vibration and noise reduction effect of the range-extending power system.

[0004] In a first aspect, an embodiment of the present application provides a range-extending power system, comprising:

[0005] an engine;

[0006] a generator, an input end of the generator being power-coupled connected with an output end of the engine, the generator being electrically connected with a battery;

[0007] a drive motor, the drive motor being electrically connected with the battery;

[0008] a reducer, the reducer being connected with the engine or the drive motor;

[0009] a bearing seat, the reducer being installed in the bearing seat;

[0010] a mounting shell, the engine, the generator, the drive motor, the reducer and the bearing seat being installed in the mounting shell;

[0011] At least one of non-movement parts of the engine, the generator, the drive motor, the reducer and the bearing seat and the mounting shell is provided with a cavity, and a plurality of movable damping particles are arranged in the cavity.

[0012] In the above technical solution, the cavity is designed in the non-movement parts of the engine, the generator, the drive motor, the reducer and the bearing seat and the mounting shell, and a plurality of movable damping particles are arranged, so that the vibration and noise generated during the operation of the range-extending power system can be reduced, and the stability of the system can be improved.

[0013] In some embodiments, at least one of the engine, the generator, the drive motor, the housing of the reducer and the bearing seat, and the mounting shell forms at least part of the cavity.

[0014] In the above technical solution, the cavity design in the engine, the generator, the drive motor, the housing of the reducer and the bearing seat, and the mounting shell is mainly used for vibration and noise reduction, which can effectively buffer the vibration and noise generated by the moving parts such as the engine, the generator, the drive motor and the reducer.

[0015] In some embodiments, at least one of the engine, the generator, the drive motor, the housing of the reducer and the bearing seat, and the mounting shell forms a groove, and a cover is installed at the open end of the groove to form the cavity.

[0016] In the above technical solution, the cavity is formed by the combination of the groove and the cover, which can effectively achieve the vibration reduction effect by using the vibration absorption and dispersion principle.

[0017] In some embodiments, the hub drive system further comprises:

[0018] A box body forms at least part of the cavity, and is installed on at least one of the non-moving parts of the engine, the generator, the drive motor, the reducer and the bearing seat, and the mounting shell.

[0019] In the above technical solution, through the coordinated work of the cavity and the damping particles, vibration energy can be efficiently absorbed and dissipated under different frequencies and conditions, thereby improving the performance and use experience of the whole vehicle.

[0020] In some embodiments, the box body comprises two sub-box bodies arranged opposite to each other, each of which forms the cavity, and the two sub-box bodies are connected in abutment, and the two sub-box bodies form a via hole for installing the box body at the abutment.

[0021] In the above technical solution, the combined structure of the two sub-box bodies can withstand greater load, which helps to reduce deformation or loosening caused by external impact or long-term use.

[0022] In some embodiments, the sub-box body forms a plurality of fan-shaped cavities, and a partition is arranged in adjacent cavities.

[0023] In the above technical solution, a plurality of fan-shaped cavities are formed in the sub-box body, which can improve the shock absorption capacity and space utilization of the box body.

[0024] In some embodiments, the extended-range power system further comprises:

[0025] An intake manifold, which is connected to the engine;

[0026] An exhaust pipe, which is connected to the engine;

[0027] The housing is installed on at least one of the intake pipe and the exhaust pipe.

[0028] In the above technical solution, by installing the second housing in at least one of the intake pipe and the exhaust pipe, various problems caused by engine vibration can be effectively mitigated, the reliability and stability of the range-extended power system can be improved, and the service life of related components can be extended.

[0029] In some embodiments, the filling rate of the damping particles in each of the cavities is ε, satisfying: 20% ≤ ε < 100%.

[0030] In the above technical solution, the filling rate is within a certain range, and the density of the damping particles can be adjusted according to actual needs to optimize vibration control.

[0031] In some embodiments, the damping particles account for a percentage of the mass of the range-extended power system, which satisfies the following condition: 2% ≤ a ≤ 10%.

[0032] In the above technical solution, the damping particles account for a certain percentage of the mass of the range-extended power system, which can maintain the high efficiency and flexibility of the range-extended power system while satisfying the vibration reduction and noise reduction effects.

[0033] In some embodiments, the damping particles are spherical particles.

[0034] In the above technical solution, the excellent rolling friction characteristics of the spherical damping particles can effectively improve the vibration reduction performance of the system and reduce friction and heat loss.

[0035] In some embodiments, the diameter D of the damping particle satisfies: 0.001mm ≤ D ≤ 100mm.

[0036] In the above technical solution, the diameter range of the damping particles has a certain impact on the vibration reduction effect. In practical applications, by reasonably selecting the diameter range of the damping particles, the vibration reduction effect can be optimized according to the required vibration reduction performance.

[0037] Secondly, embodiments of this application provide a vehicle, including:

[0038] The hub drive system as described in any one of the above examples is used to provide power.

[0039] In the above technical solution, the wheel hub driving system provides power for the vehicle, which can improve transmission efficiency, reduce energy waste, and improve the overall driving efficiency of the vehicle. BRIEF DESCRIPTION OF DRAWINGS

[0040] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings needed in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of the present application, and therefore should not be regarded as a limitation on the scope. For those skilled in the art, other related drawings can also be obtained without creative labor.

[0041] Figure 1 Structure diagram of the range-extending power system provided by some embodiments of the present application;

[0042] Figure 2 Structure diagram of the range-extending power system provided by some embodiments of the present application;

[0043] Figure 3 Structure diagram of the range-extending power system provided by some embodiments of the present application;

[0044] Figure 4 Structure diagram of the first box provided by some embodiments of the present application;

[0045] Figure 5 Structure diagram of the second box provided by some embodiments of the present application;

[0046] Figure 6 Structure diagram of the second box provided by some embodiments of the present application;

[0047] Figure 7 Structure diagram of the second box provided by some embodiments of the present application.

[0048] Reference signs:

[0049] Range-extending power system 1;

[0050] Engine 10, generator 20, drive motor 30, speed reducer 40, mounting shell 50;

[0051] Cavity 60, damping particles 610;

[0052] Box 70;

[0053] First box 710, second box 720, sub-box 721, via hole 722, partition 723, lug 724;

[0054] Air inlet pipe 80, air outlet pipe 90. DETAILED DESCRIPTION

[0055] In order to make the objects, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be clearly described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only some but not all of the embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by a person of ordinary skill in the art without creative work fall within the protection scope of the present application.

[0056] Unless otherwise defined, all technical and scientific terms used in the present application have the same meaning as commonly understood by one of ordinary skill in the art to which the present application belongs; the terms used in the present application are only for the purpose of describing the specific embodiments of the present application and are not intended to limit the present application; the terms "include" and "have" and any variations thereof in the specification and claims of the present application and the above description of drawings are intended to cover the non-exclusive inclusion. The terms "first", "second" and the like in the specification and claims of the present application and the above description of drawings are used to distinguish different objects, and are not intended to describe a particular order or primary and secondary relationship.

[0057] In the present application, the phrase "embodiments" means that the specific features, structures or characteristics described in connection with the embodiments can be included in at least one embodiment of the present application. The phrase appears at various places in the specification does not necessarily all refer to the same embodiments, nor are they necessarily mutually exclusive or alternative embodiments to each other. It is explicitly and implicitly understood by those skilled in the art that the embodiments described in the present application can be combined with other embodiments.

[0058] In the description of the present application, it should be noted that unless otherwise explicitly specified and limited, the terms "mount", "connect", "connection", "attach" should be understood broadly, for example, it can be fixed connection, or detachable connection, or integral connection; it can be direct connection, or indirect connection through intermediate medium, or internal communication of two elements. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0059] In the present application, the term "and / or" is only a description of the association relationship between the associated objects, which means that there can be three kinds of relationships, for example, A and / or B can represent the following three cases: A exists alone, A and B exist together, and B exists alone. In addition, the character " / " in the present application generally represents an "or" relationship between the front and rear associated objects.

[0060] The "multiple" appearing in the present application refers to more than two (including two), and similarly, "multiple groups" refers to more than two groups (including two groups), and "multiple pieces" refers to more than two pieces (including two pieces).

[0061] The inventors found that in an electric vehicle, the impact when the range-extending power system starts and stops is large, resulting in large vibration and noise transmitted to the vehicle body. In the related art, a viscoelastic damping filler and a particle damping are usually used at the bottom of the electric drive controller to reduce vibration, but the viscoelastic material is not resistant to high temperature and is prone to aging, and at the same time, it cannot solve the problem of large vibration of the motor reducer and the range-extender shell, and there is room for improvement.

[0062] Based on the above considerations, in order to solve the problem of large impact when the range-extending power system starts and stops, the inventors have designed a range-extending power system, in which the vibration and noise generated by the moving parts can be reduced, and the vibration and noise reduction effect of the range-extending power system can be effectively improved.

[0063] The following embodiments are described by taking a range-extending power system of an embodiment of the present application as an example for convenience of description.

[0064] As shown in Figure 1 , Figure 1 is one of the structure schematic diagrams of the range-extending power system 1 provided by some embodiments of the present application. The range-extending power system 1 comprises an engine 10, a generator 20, a drive motor 30, a reducer 40, a bearing seat and a mounting shell 50.

[0065] The range-extending power system 1 is usually used in a range-extending electric vehicle, and mainly extends the cruising range of the battery drive by increasing the engine 10 and the generator 20, wherein the engine 10 is one of the core components of the range-extending power system 1, which generates mechanical power by burning fuel, the generator 20 is connected with the engine 10, and converts the mechanical energy generated by the engine 10 into electrical energy, and supplies the electrical energy to the drive motor 30 or the battery, the generator 20 can charge the battery or directly supply power to the drive system, and the drive motor 30 is one of the core components of the electric drive system, which is responsible for converting the power provided by the battery or the generator 20 into mechanical power, and is used to drive the wheel shaft of the vehicle.

[0066] Specifically, the input end of the generator 20 is usually connected with the output end of the engine 10 in a mechanical coupling manner, and the mechanical power output by the engine 10 can be transmitted to the generator 20 through a belt, a gear or a transmission shaft, so as to drive the rotation of the generator 20. In the working process of the generator 20, the mechanical power is converted into electrical energy by the rotating parts inside the generator 20 through the principle of electromagnetic induction.

[0067] The generator 20 and the drive motor 30 are electrically connected to the battery. The battery is usually composed of multiple battery cells to form a battery pack, which is used to store or provide electrical energy. The power generated by the generator 20 can be transmitted to the battery through the electrical system to charge the battery. The drive motor 30 can provide electrical energy through the battery and convert the electrical energy into mechanical power to drive the wheels.

[0068] The reducer 40 can be connected to the engine 10 or the drive motor 30 to adjust the output speed and torque, which helps to improve drive efficiency. When the reducer 40 is connected to the engine 10, the reducer 40 can change the output speed of the engine and adjust the torque output at the same time. When the reducer 40 is connected to the drive motor 30, the reducer 40 can convert the high speed output by the drive motor 30 into a lower speed suitable for the drive wheel axle and adjust the torque output at the same time.

[0069] The reducer 40 is mounted on a bearing housing, which is a robust support structure capable of withstanding high pressure. It can be used to support and fix components such as the reducer 40, generator 20, and engine 10, which helps the reducer 40 to work stably under high load and high speed conditions. In addition, the bearing housing usually contains bearings to reduce friction between moving parts and keep the components running smoothly.

[0070] Mounting housing 50 is the external protective structure of the entire power system. It is used to integrate components such as engine 10, generator 20, drive motor 30, reducer 40 and bearing housing. Mounting housing 50 can also protect these components and reduce damage to internal components from the external environment.

[0071] Among them, such as Figures 1-4 As shown, Figure 2 This is the second schematic diagram of the structure of the range-extended power system 1 provided in some embodiments of this application. Figure 3 This is the third schematic diagram of the structure of the range-extended power system 1 provided in some embodiments of this application. Figure 4 This is a structural schematic diagram of the first housing 710 provided in some embodiments of this application. At least one of the non-moving parts of the engine 10, generator 20, drive motor 30, reducer 40 and bearing housing, and mounting shell 50 is provided with a cavity 60, and a plurality of movable damping particles 610 are disposed in the cavity 60.

[0072] The cavity 60 provides space for the damping particles 610 to move freely within the cavity 60, thereby absorbing and mitigating vibration.

[0073] Specifically, the cavities 60 with damping particles 610 can absorb vibration energy through resonance, gas expansion and compression, etc., to reduce vibration transmission, and the movement of the damping particles 610 can also absorb or disperse noise in mechanical transmission. The cavities 60 are arranged on at least one of the non-moving parts of the engine 10, the generator 20, the drive motor 30, the reducer 40 and the bearing seat or the mounting shell 50, which can maximize the damping effect.

[0074] For example, the damping particles 610 are usually made of durable materials such as rubber, polymer or metal particles. The damping particles 610 absorb and consume part of the vibration energy by moving freely in the cavities 60. When the vibration is transmitted to the cavities 60, the damping particles 610 in the cavities 60 move, collide and rub in the cavities 60 according to the frequency and intensity of the vibration, which is then converted into heat energy and consumes the vibration energy, reducing the impact of vibration on the extended-range power system 1.

[0075] In the above description, the cavities 60 are designed in the non-moving parts of the engine 10, the generator 20, the drive motor 30, the reducer 40 and the bearing seat, and the mounting shell 50, and the movable damping particles 610 are arranged therein, which can reduce the vibration and noise generated during the operation of the extended-range power system 1 and improve the stability of the system.

[0076] According to some embodiments of the present application, referring to Figures 1-4 at least one of the engine 10, the generator 20, the drive motor 30, the reducer 40 and the bearing seat forms at least part of the cavity 60.

[0077] The extended-range power system 1 integrates the engine 10, the generator 20, the drive motor 30, the reducer 40, the bearing seat and the mounting shell 50, wherein the engine 10, the generator 20, the drive motor 30, the reducer 40 and the bearing seat are all mounted on the mounting shell 50. The cavities 60 can be formed in the respective housings of these components and the mounting shell 50, and the cavities 60 are structured with damping particles 610, which are mainly used for damping and can effectively buffer the vibration and noise generated during the operation of each component.

[0078] Specifically, the cavities 60 with damping particles 610 can reduce the vibration generated during the operation of the engine 10, the generator 20, the drive motor 30 and the reducer 40, and the cavities 60 with damping particles 610 can also reduce the vibration transmitted to the bearing seat and the mounting shell 50.

[0079] In the above description, the cavities 60 in the engine 10, the generator 20, the drive motor 30, the housing of the bearing seat and the mounting shell 50 are designed mainly for vibration and noise reduction, which can effectively buffer the vibration and noise generated by the moving parts of the engine 10, the generator 20, the drive motor 30 and the reducer 40.

[0080] According to some embodiments of the present application, at least one of the engine 10, the generator 20, the drive motor 30, the housing of the bearing seat and the mounting shell 50 forms a groove, and a cover is installed at the open end of the groove to form the cavity 60.

[0081] In the extended range power system 1, the cavity 60 can be part of a vibration reduction system, which, in cooperation with other components, reduces vibration and noise during operation. Specifically, by providing a groove in at least one of the engine 10, the generator 20, the drive motor 30, the housing of the bearing seat and the mounting shell 50, the elastic deformation capacity of the housing can be increased, which helps to disperse the vibration from the engine 10, the generator 20, the drive motor 30 and the reducer 40. The cavity 60 inside the groove acts as a vibration reduction chamber, which can absorb or weaken the vibration through air or elastic deformation of the structure.

[0082] In addition, by installing a cover at the open end of the groove, the cavity 60 can be closed, and the vibration reduction effect inside the cavity 60 can be enhanced. The cooperation of the cavity 60 and the cover allows air to be slightly compressed and expanded inside the cavity 60, absorbing part of the vibration energy and reducing vibration, thereby reducing noise and vibration.

[0083] In the above description, by combining the groove and the cover to form the cavity 60, the vibration absorption and dispersion principle can be used to effectively achieve the vibration reduction effect.

[0084] According to some embodiments of the present application, with reference to Figures 1-4 , the extended range power system 1 further comprises a box body 70, the box body 70 comprising a first box body 710 and a second box body 720, the first box body 710 forming at least part of the cavity 60 and being mounted on at least one of the non-moving parts of the engine 10, the generator 20, the drive motor 30, the reducer 40 and the bearing seat and the mounting shell 50.

[0085] In the extended range power system 1, the first box body 710 is a shell structure containing the cavity 60, which is used for vibration and noise reduction. It can be mounted on the non-moving parts of the engine 10, the generator 20, the drive motor 30, the reducer 40 and the bearing seat. These non-moving parts are fixed parts of the extended range power system 1 and do not participate in the movement, so they can be used to mount the first box body 710.

[0086] As Figure 4As shown, the cavity 60 in the first box body 710 is provided with movable damping particles 610 for absorbing vibration. When the system is working, the generated vibration will be transmitted to the first box body 710. The damping particles 610 in the cavity 60 help to disperse and absorb part of the vibration energy, reducing the impact on other components.

[0087] The first box body 710 is a device that absorbs vibration energy through the mutual collision and friction of the damping particles 610 in the closed cavity 60. The damping particles 610 can be metal, ceramic or other materials. Through the nonlinear motion of the damping particles 610 in the cavity 60, the vibration energy can be effectively consumed, and the vibration propagation can be weakened.

[0088] In the above description, through the coordinated work of the cavity 60 and the damping particles 610, vibration energy can be efficiently absorbed and dissipated under different frequencies and conditions, thereby improving the performance and use experience of the whole vehicle.

[0089] According to some embodiments of the present application, with reference to Figure 5 , Figure 5 is one of the structure schematic diagrams of the second box body 720 provided for some embodiments of the present application. The second box body 720 includes two sub-box bodies 721 arranged oppositely, each of which forms a cavity 60, and the two sub-box bodies 721 are connected in abutment. The two sub-box bodies 721 form a via hole 722 for mounting the second box body 720 at the abutment.

[0090] Each of the two sub-box bodies 721 forms an independent cavity 60, and the cavity 60 is provided with movable damping particles 610 for absorbing vibration. When the system is working, the generated vibration will be transmitted to the second box body 720. The damping particles 610 in the cavity 60 help to disperse and absorb part of the vibration energy, reducing the impact on other components.

[0091] The two sub-box bodies 721 can be connected by a specific buckle, screw or welding, etc. The two sub-box bodies 721 form a via hole 722 at the abutment, and the via hole 722 is used for passing through other components and fixing the second box body 720 on other components.

[0092] In the above description, the combined structure of the two sub-box bodies 721 can withstand greater load, which helps to reduce deformation or looseness caused by external impact or long-term use.

[0093] According to some embodiments of the present application, with reference to Figure 5 , the sub-box body 721 forms a plurality of fan-shaped cavities 60, and a partition 723 is arranged in the adjacent cavities 60.

[0094] Two sub-boxes 721 are connected by lugs 724, the cross-section of the sub-boxes 721 except for the lug 724 part is semicircular, and multiple partitions 723 are distributed around the inside of the sub-boxes 721, thereby forming multiple fan-shaped cavities 60, which can effectively utilize space and can enhance the stability and carrying capacity of the structure of the sub-boxes 721.

[0095] The multiple fan-shaped cavities 60 are each provided with damping particles 610 for vibration reduction and noise reduction, the cavities 60 in the sub-boxes 721 are divided into multiple small fan-shaped regions by the partitions 723, the fan-shaped cavity 60 structure can optimize stress distribution and reduce the risk of excessive stress on a single region, thereby reducing local deformation or damage, and in addition, the partitions 723 between adjacent cavities 60 can also block the propagation of vibrations in different regions, thereby reducing noise and unnecessary energy loss.

[0096] In the above description, the multiple fan-shaped cavities 60 formed in the sub-boxes 721 can improve the vibration reduction capability and space utilization of the second box 720.

[0097] According to some embodiments of the present application, with reference to Figure 5 The sub-boxes 721 are provided with connecting lugs 724, and the lugs 724 of the two sub-boxes 721 are oppositely arranged and connected.

[0098] The lugs 724 of the two identical sub-boxes 721 are oppositely arranged and can be connected by a specific buckle, screw, or welding, etc. When installing the second box 720, the two sub-boxes 721 can be matched with the installation position respectively, the lugs 724 of the two sub-boxes 721 are oppositely arranged and in contact, and then the lugs 724 of the two sub-boxes 721 are connected together, thereby integrating the two sub-boxes 721 into a whole, and completing the installation of the second box 720.

[0099] The firm connection of the two sub-boxes 721 in structure can enhance the stability and vibration reduction effect of the second box 720, and the connected lugs 724 make the two sub-boxes 721 jointly bear the vibration load, thereby more evenly distributing the pressure, reducing the risk of local overload, and improving the durability of the system.

[0100] In addition, when the lugs 724 of the two sub-boxes 721 are oppositely arranged, good symmetry in structure can be maintained, structural stress and vibration problems caused by asymmetric load can be effectively reduced, and the damping effect can be more balanced.

[0101] In the above description, by providing the lugs 724 for connection on the sub-boxes 721, the two sub-boxes 721 can be efficiently connected and jointly achieve the absorption and reduction of vibration energy, thereby enhancing the structural stability and vibration reduction effect of the damping system.

[0102] According to some embodiments of the present application, as shown inFigure 1 and Figure 6 as shown in FIG. 7B, Figure 6 FIG. 7C is a structural schematic diagram of the second box 720 according to some embodiments of the present application. The range-extending power system 1 further comprises an air intake pipe 80 and an exhaust pipe 90, both of which are connected to the engine 10, and at least one of the air intake pipe 80 and the exhaust pipe 90 is provided with the second box 720.

[0103] In the range-extending power system 1, the second box 720 provided with the damping particles 610 mainly absorbs and consumes vibration energy by using the movement of the damping particles 610 in the closed cavities 60, thereby effectively suppressing vibration and reducing noise, and improving the stability of the entire system.

[0104] During the operation of the engine 10, the engine 10 will generate vibration and noise, and the vibration of the engine 10 itself will be transmitted to other system components connected to the engine 10, such as the air intake pipe 80 and the exhaust pipe 90, thereby affecting the stability of the air intake pipe 80 and the exhaust pipe 90. The air intake pipe 80 and the exhaust pipe 90 are both connected to the engine 10. The main function of the air intake pipe 80 is to introduce external air into the engine 10 for use in the combustion process. The exhaust pipe 90 is used to efficiently discharge exhaust gas while reducing exhaust backflow. By installing the second box 720 provided with the damping particles 610 on at least one of the air intake pipe 80 and the exhaust pipe 90, vibration and noise can be reduced, and the normal operation of the engine 10 can be maintained.

[0105] In the above description, by installing the second box 720 on at least one of the air intake pipe 80 and the exhaust pipe 90, various problems caused by engine 10 vibration can be effectively alleviated, the reliability and stability of the range-extending power system 1 can be improved, and the service life of related components can be prolonged.

[0106] According to some embodiments of the present application, referring to Figure 6 and Figure 7 , Figure 7 FIG. 7D is a structural schematic diagram of the second box 720 according to some embodiments of the present application. The filling rate of the damping particles 610 in each cavity 60 is ε, which satisfies: 20%≤ε<100%.

[0107] The filling rate of the damping particles 610 in each cavity 60 is the distribution density of the damping particles 610 in the cavity 60. Specifically, when the filling rate is low, such as 20%≤ε<100%, the interaction force between the damping particles 610 is small, and the space in the cavity 60 is large, so the vibration has a large propagation space. However, when the vibration is large, the distribution density of the damping particles 610 is not sufficient to fully absorb and disperse the vibration, and the vibration suppression effect may be poor.

[0108] When the filling rate is moderate, such as % ≤ ε < 90%, the number of damping particles 610 is sufficient to effectively absorb and reduce the transmission of vibration, and at the same time, such density helps to increase the collision and friction between the damping particles 610, thereby enhancing the consumption of energy and improving the damping effect.

[0109] When the filling rate is high, such as 90% ≤ ε < 100%, the damping particles 610 almost completely fill the cavity 60, which can greatly reduce the vibration and has the strongest damping effect, but at this time, the high filling rate may affect the free movement of the damping particles 610, and the high particle density may increase the heat conduction effect, causing the temperature inside the cavity 60 to rise.

[0110] In addition, under the condition of high filling rate, the density and friction of the damping particles 610 are enhanced, which can better stabilize the vibration of the vehicle during high-speed driving, thereby improving the handling stability of the vehicle.

[0111] In the above description, the filling rate ε is between 20% and 100%, and the density of the damping particles 610 can be adjusted according to actual needs, thereby optimizing the vibration control.

[0112] According to some embodiments of the present application, the mass percentage of the damping particles 610 in the extended-range power system 1 is a, which satisfies: 2% ≤ a ≤ 10%.

[0113] The mass percentage of the damping particles 610 in the extended-range power system 1 has a certain influence on the weight distribution of the extended-range power system 1. Specifically, the damping particles 610 mainly function to reduce vibration and impact, and also help to reduce noise caused by the drive system. A reasonable mass percentage of the damping particles 610 can effectively absorb the impact and vibration in the extended-range power system 1, and also help to improve the quiet performance of the vehicle.

[0114] When the mass percentage of the damping particles 610 is low, such as a < 2%, the damping particles 610 have a weakened effect on reducing vibration and noise of the extended-range power system 1,

[0115] When the mass percentage of the damping particles 610 is high, such as a > 2%, the damping particles 610 have an enhanced effect on reducing vibration and noise of the extended-range power system 1, but at the same time, the too high mass percentage increases the total mass of the extended-range power system 1, increases the output power of the hub motor 20, and has an adverse effect on the power performance and fuel efficiency of the extended-range power system 1.

[0116] In addition, as the mass percentage of the damping particles 610 increases, the total mass of the extended-range power system 1 increases, which may cause the inertia to increase, thereby affecting the acceleration performance and response speed.

[0117] In the above description, the mass percentage a of the damping particles 610 in the extended-range power system 1 is in the range of 2%≤a≤10%, which can maintain the high efficiency and flexibility of the extended-range power system 1 while meeting the vibration and noise reduction effect.

[0118] According to some embodiments of the present application, referring to Figure 6 and Figure 7 , the damping particles 610 are spherical particles.

[0119] Compared with other shaped particles, the spherical particles mainly exhibit rolling friction rather than sliding friction when moving, and the rolling friction generates less energy loss than the sliding friction. The spherical particles can more effectively transfer vibration energy, thereby improving the vibration reduction efficiency, and the lower friction loss helps to reduce the energy consumption of the system.

[0120] The smooth surface of the spherical particles not only reduces direct friction and wear between the particles and other surfaces, but also effectively reduces the noise generated by the surface contact of the spherical particles, thereby improving the overall quietness and prolonging the service life of the particles.

[0121] In addition, the spherical particles can be more uniformly distributed in the system under dynamic load, which helps to improve the stability of the damping particles 610 and reduces the risk of accumulation or uneven distribution caused by external forces, thereby maintaining the stable vibration reduction effect of the system during long-term use.

[0122] For the extended-range power system 1 operating at high load or high speed, the lower friction characteristics of the spherical particles can generate relatively less friction heat, reduce the thermal load of the system, and reduce the performance degradation caused by heat accumulation.

[0123] For example, common damping particles 610 materials usually have good wear resistance and corrosion resistance, including polytetrafluoroethylene, rubber composite materials, and ceramic particles, etc.

[0124] In the above description, the good rolling friction characteristics of the spherical damping particles 610 can effectively improve the vibration reduction performance of the system and reduce friction and heat loss.

[0125] According to some embodiments of the present application, referring to Figure 6 and Figure 7 , the diameter D of the damping particles 610 satisfies: 0.001mm≤D≤100mm.

[0126] The working process of the damping particles 610 usually involves interaction with fluids or gases, and particles of different diameters exhibit different damping characteristics in collisions. The diameter of the damping particles 610 directly affects the response speed during vibration, thereby affecting the vibration reduction effect.

[0127] In the damping process, the damping particles 610 collide and rub with each other or the container wall, energy conversion and dissipation occur, the smaller diameter damping particles 610 usually collide and rub more, and can convert energy more effectively through higher frequency collisions and friction, showing stronger damping effect, and the larger diameter damping particles 610 have larger mass and slower response, and the collision frequency is lower, resulting in slower energy conversion speed.

[0128] Specifically, the smaller diameter damping particles 610 can provide higher surface area and higher collision frequency, which is suitable for high-frequency vibration damping, and the larger diameter damping particles 610 can withstand more vibration energy, which is suitable for low-frequency vibration. According to actual conditions, different diameters of damping particles 610 are used, and more stable and balanced damping effect can be obtained in different vibration frequency ranges.

[0129] In the above description, the diameter range of the damping particles 610 has a certain influence on the damping effect, and in actual application, reasonable selection of the diameter range of the damping particles 610 can optimize the damping effect according to the required damping performance.

[0130] According to some embodiments of the present application, the present application also provides a vehicle comprising the range-extending power system 1 of any of the above schemes for providing power.

[0131] The vehicle can include a range-extending electric vehicle, which is a hybrid vehicle combining electric drive and an internal combustion engine as a range extender. The technical solutions described in the embodiments of the present application are applicable to various vehicles using the range-extending power system 1.

[0132] Specifically, in the range-extending electric vehicle, the range-extending power system 1 is widely used to replace the traditional power system, and the range-extending power system 1 mainly extends the cruising range of the battery drive by adding the engine 10 and the generator 20.

[0133] The range-extending power system 1 mentioned in the embodiments of the present application can include an engine 10, a generator 20 and a drive motor 30, wherein the engine 10 is one of the core components in the range-extending power system 1, which generates mechanical power by burning fuel, the generator 20 is connected with the engine 10, which converts the mechanical energy generated by the engine 10 into electrical energy, and supplies part of the electrical energy to the drive motor 30 or the battery, the generator 20 can charge the battery or directly supply power to the drive system, and the drive motor 30 is one of the core components of the electric drive system, which is responsible for converting the power provided by the battery or the generator 20 into mechanical power, and is used to drive the wheel shaft of the vehicle.

[0134] In the foregoing description, the vehicle is powered by the range-extending power system 1, which can improve transmission efficiency, reduce energy waste, and improve the overall driving efficiency of the vehicle.

[0135] According to some embodiments of the present application, referring to Figures 1-7 The present application provides a range-extending power system 1, which comprises an engine 10, a generator 20, a drive motor 30, a reducer 40, a bearing seat, and a mounting shell 50.

[0136] The input end of the generator 20 is power-coupled to the output end of the engine 10, and the generator 20 is electrically connected to the battery; the drive motor 30 is electrically connected to the battery; the reducer 40 is connected to the engine 10 or the drive motor 30; the reducer 40 is mounted on the bearing seat; the engine 10, the generator 20, the drive motor 30, the reducer 40, and the bearing seat are mounted on the mounting shell 50; at least one of the non-moving parts of the engine 10, the generator 20, the drive motor 30, the reducer 40, and the bearing seat and the mounting shell 50 is provided with a cavity 60, and a plurality of movable damping particles 610 are arranged in the cavity 60.

[0137] At least one of the housing of the engine 10, the generator 20, the drive motor 30, the reducer 40, and the bearing seat and the mounting shell 50 forms a groove, and a cover is mounted at the open end of the groove to form the cavity 60.

[0138] The range-extending power system 1 further comprises a box body 70, which comprises a first box body 710 and a second box body 720, the first box body 710 forms at least part of the cavity 60 and is mounted on at least one of the non-moving parts of the engine 10, the generator 20, the drive motor 30, the reducer 40, and the bearing seat and the mounting shell 50.

[0139] The second box body 720 comprises two oppositely arranged sub-box bodies 721, each of which forms a cavity 60 and is connected in abutment, and the two sub-box bodies 721 form a via hole 722 for mounting the second box body 720 at the abutment, the intake pipe 80 and the exhaust pipe 90 pass through the via hole 722, a plurality of fan-shaped cavities 60 can be formed in the sub-box body 721, and a partition plate 723 is arranged in adjacent cavities 60.

[0140] A single cavity 60 or a plurality of fan-shaped cavities 60 can be formed in the box body 70, for example, a single cavity 60 is formed in the first box body 710 and a plurality of fan-shaped cavities 60 are formed in the second box body 720. The filling rate of the damping particles 610 in each cavity 60 is ε, which satisfies 20%≤ε<100%, and the damping particles 610 are spherical particles, the diameter D of the damping particles 610 satisfies 0.001mm≤D≤100mm, and in addition, the mass percentage of all damping particles 610 in the range-extending power system 1 is a, which satisfies 2%≤a≤10%.

[0141] All embodiments and optional embodiments of the present application can be combined with each other to form new technical solutions if not specifically stated.

[0142] All technical features and optional technical features of the present application can be combined with each other to form new technical solutions if not specifically stated.

[0143] The above is only the preferred embodiment of the present application and is not used to limit the present application. For those skilled in the art, the present application can have various changes and modifications. Any modification, equivalent replacement, improvement, etc. within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A range-extended power system, characterized in that, include: engine; A generator, wherein the input end of the generator is power-coupled to the output end of the engine, and the generator is electrically connected to a battery; A drive motor, which is electrically connected to the battery; A speed reducer, which is connected to the engine or the drive motor; Bearing housing, the reducer is mounted on the bearing housing; The engine, the generator, the drive motor, the reducer, and the bearing housing are mounted in the mounting housing; At least one of the engine, the generator, the drive motor, the reducer, the non-moving part of the bearing housing, and the mounting shell is provided with a cavity, and a plurality of movable damping particles are provided in the cavity.

2. The range-extended power system according to claim 1, characterized in that, At least one of the engine, the generator, the drive motor, the reducer, the bearing housing, and the mounting housing forms at least a portion of the cavity.

3. The range-extended power system according to claim 2, characterized in that, At least one of the housings of the engine, the generator, the drive motor, the reducer, and the bearing housing, as well as the mounting shell, forms a groove, and a cover is installed at the open end of the groove to form the cavity.

4. The range-extended power system according to claim 1, characterized in that, Also includes: A housing that forms at least a portion of the cavity and is mounted on at least one of the non-moving portions of the engine, the generator, the drive motor, the reducer, and the bearing housing, as well as the mounting shell.

5. The range-extended power system according to claim 4, characterized in that, The box body includes two sub-boxes arranged opposite each other, each of the two sub-boxes forming the cavity and connected together, and the two sub-boxes forming a through hole at the joint for installing the box body.

6. The range-extended power system according to claim 5, characterized in that, The sub-box body forms multiple fan-shaped cavities, and partitions are provided in adjacent cavities.

7. The range-extended power system according to claim 6, characterized in that, The sub-box body is provided with connecting lugs, and the lugs of the two sub-box bodies are arranged opposite to each other and connected.

8. The range-extended power system according to any one of claims 5-7, characterized in that, Also includes: An intake manifold, which is connected to the engine; An exhaust pipe, which is connected to the engine; The housing is installed on at least one of the intake pipe and the exhaust pipe.

9. The range-extended power system according to any one of claims 1-7, characterized in that, The filling rate of the damping particles in each cavity is ε, which satisfies the following condition: 20% ≤ ε < 100%.

10. The range-extended power system according to claim 9, characterized in that, The damping particles constitute a percentage of the mass of the range-extended power system, satisfying the condition: 2% ≤ a ≤ 10%.

11. The range-extended power system according to claim 10, characterized in that, The damping particles are spherical.

12. The range-extended power system according to claim 11, characterized in that, The diameter D of the damping particle satisfies: 0.1mm ≤ D ≤ 10mm.

13. A vehicle, characterized in that, include: The range-extended power system as described in any one of claims 1-12 is used to provide power.

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