Range extending power driving device, range extending power system and vehicle

Abstract

The embodiment of the utility model provides a range extending power driving device, a range extending power system and a vehicle. The range extending power driving device comprises a range extender, a clutch, a motor, a speed reducing mechanism and an on-off mechanism. The clutch is connected between the range extender and the motor so as to control connection and disconnection between the range extender and the motor. The speed reducing mechanism is connected between the motor and the on-off mechanism, the on-off mechanism is used for being connected with a wheel carrier, and the on-off mechanism controls connection and disconnection between the speed reducing mechanism and the wheel carrier. Starting and power generation of the range extender are controlled through the clutch, the on-off mechanism is matched to control connection and disconnection between the speed reducing mechanism and the wheel carrier, driving and kinetic energy recovery of the wheel carrier are achieved, and the range extending power driving device can achieve the power generation and driving functions according to actual needs in a time division multiplexing mode. And the use number of motors is reduced, the product weight is reduced, lightweight design is facilitated, and the production cost is reduced.

Description

TECHNICAL FIELD

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

[0002] With the development of science and technology and the improvement of living standards, people have put forward higher and higher requirements for the performance of vehicles. Among them, the auxiliary driving device of the range extending power system plays a relatively important role in the operation of the vehicle power system.

[0003] In the prior art, the auxiliary driving device of the range extending power system usually includes a power generation mechanism and a driving mechanism, wherein the power generation mechanism includes a range extender, a generator and a motor controller, which are used to provide auxiliary power generation and range extender starting. The driving system includes a motor, a motor controller and a speed reduction mechanism, which are used to provide auxiliary driving and kinetic energy recovery.

[0004] However, the existing power generation mechanism and driving mechanism have many structural components, resulting in a relatively complex overall architecture of the auxiliary driving device of the range extending power system, and the functions of the power generation mechanism and the driving mechanism are relatively single. SUMMARY

[0005] In view of the above problems, the present application is proposed to provide a range extending power driving device, a range extending power system and a vehicle which overcome the above problems or at least partially solve the above problems.

[0006] In order to solve the above technical problems, the present application is implemented as follows:

[0007] In a first aspect, the present application embodiment provides a range extending power driving device, which comprises a range extender, a clutch, a motor, a speed reduction mechanism and an on-off mechanism.

[0008] The clutch is connected between the range extender and the motor to control the on-off between the range extender and the motor.

[0009] The speed reduction mechanism is connected between the motor and the on-off mechanism, and the on-off mechanism is used to connect a wheel frame, and the on-off between the speed reduction mechanism and the wheel frame is controlled through the on-off mechanism.

[0010] Optionally, in a first working condition, the clutch connects the range extender and the motor, and the on-off mechanism disconnects the speed reduction mechanism and the wheel frame, so as to start and generate power for the range extender.

[0011] Optionally, in a second working condition, the clutch disconnects the range extender and the motor, and the on-off mechanism connects the speed reduction mechanism and the wheel frame, so as to drive the wheel frame by the motor to realize kinetic energy recovery.

[0012] Optionally, in the third working condition, the clutch connects the range extender and the motor, the on-off mechanism connects the reduction mechanism and the wheel frame, and the torque of the range extender and the motor is controlled to realize that the motor and the range extender drive the wheel frame while generating electricity, or the range extender and the motor jointly drive the wheel frame.

[0013] Optionally, the on-off mechanism comprises a first on-off member and a second on-off member, and the wheel frame comprises a first tire and a second tire arranged at intervals.

[0014] The first on-off member is connected between the reduction mechanism and the first tire, and the second on-off member is connected between the reduction mechanism and the second tire.

[0015] Optionally, the first tire, the first on-off member, the second on-off member and the second tire are coaxially arranged.

[0016] Optionally, the range extender, the clutch and the motor are coaxially arranged.

[0017] Optionally, the reduction mechanism comprises a transmission and a differential, the transmission is connected to the motor, and the differential is connected between the transmission and the on-off mechanism.

[0018] In a second aspect, an embodiment of the present application provides a range extending power system, which comprises the range extending power driving device.

[0019] In a third aspect, an embodiment of the present application provides a vehicle, which comprises the range extending power system or the range extending power driving device.

[0020] In the embodiment of the present application, the range extending power driving device comprises a range extender, a clutch, a motor, a speed reduction mechanism and an on-off mechanism; the clutch is connected between the range extender and the motor to control the on-off between the range extender and the motor; the speed reduction mechanism is connected between the motor and the on-off mechanism, and the on-off mechanism is used to connect a wheel carrier to control the on-off between the speed reduction mechanism and the wheel carrier. In this way, the on-off between the range extender and the motor can be controlled by the clutch according to the driving condition during driving, and the start and power generation of the range extender can be controlled, and the on-off between the speed reduction mechanism and the wheel carrier can be controlled by the on-off mechanism, and the driving of the wheel carrier and the kinetic energy recovery can be realized, so that the range extending power driving device can realize the functions of power generation and driving according to actual needs. Moreover, the number of motors and related structures is reduced, the product weight is reduced, the lightweight design of the vehicle is facilitated, and the production cost is also reduced. The structure parts of the existing power generation mechanism and driving mechanism are reduced, and the overall architecture of the range extending power driving device is simplified.

[0021] Additional aspects and advantages of the application will be set forth in part in the description which follows, and in part will become apparent to those skilled in the art upon examination of the following and / or can be learned by practice of the application. BRIEF DESCRIPTION OF DRAWINGS

[0022] The above and / or additional aspects and advantages of the present application will become apparent and be readily appreciated from the following description, including the accompanying drawings, wherein:

[0023] Figure 1 FIG. 1 is a structural schematic diagram of a range extending power driving device according to an embodiment of the present application.

[0024] FIG. 1 is a structural schematic diagram of a range extending power driving device according to an embodiment of the present application. DETAILED DESCRIPTION

[0025] Embodiments of the present application will be described in detail below, examples of which are shown in the accompanying drawings, wherein the same or similar reference signs represent the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present application, and cannot be understood as a limitation of the present application. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor are within the scope of protection of the present application.

[0026] The terms "first", "second" in the description and claims of the present application can explicitly or implicitly include one or more of the features. In the description of the present application, unless otherwise specified, the meaning of "a plurality of" is two or more. In addition, "and / or" in the specification and claims means at least one of the connected objects, and the character " / ", generally indicates that the front and rear associated objects are in an "or" relationship.

[0027] In the description of the present application, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the present application.

[0028] In the description of the present application, it should be noted that unless otherwise specified and limited, the terms "mounting", "connection", "connection" should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or integrally connected; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium; it can be the communication inside 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.

[0029] Referring to Figure 1 , a structure schematic diagram of a range extending power driving device is shown, which can specifically include: a range extender 10, a clutch 20, a motor 30, a speed reduction mechanism 40 and an on-off mechanism 50; the clutch 20 is connected between the range extender 10 and the motor 30 to control the on-off between the range extender 10 and the motor 30; the speed reduction mechanism 40 is connected between the motor 30 and the on-off mechanism 50, and the on-off mechanism 50 is used to connect a wheel frame, and controls the on-off between the speed reduction mechanism 40 and the wheel frame through the on-off mechanism 50.

[0030] In the embodiment of the present application, the clutch 20 can control the on-off between the range extender 10 and the motor 30 according to the driving condition in the driving process and actual needs, thereby controlling the starting and power generation of the range extender 10, and the on-off mechanism 50 can control the on-off between the speed reduction mechanism 40 and the wheel carrier, thereby realizing the driving and kinetic energy recovery of the wheel carrier, so that the range-extending power driving device can realize the functions of power generation and driving according to actual needs. In addition, the embodiment of the present application reduces the number of motors 30 and related structures, reduces the weight of the product, is conducive to the lightweight design of the vehicle, and also reduces the production cost. The embodiment of the present application reduces the various structural components of the existing motor 30 and driving mechanism, and simplifies the overall structure of the range-extending power driving device.

[0031] In the embodiment of the present application, the wheel carrier can be a front wheel carrier, that is, the front wheel is used as auxiliary driving and the rear wheel is used as main driving. In addition, the wheel carrier can also be a rear wheel carrier, that is, the rear wheel is used as auxiliary driving and the front wheel is used as main driving. The specific type of the wheel carrier is not limited in the embodiment of the present application.

[0032] In the embodiment of the present application, the range-extending power driving device further comprises a motor controller, which is arranged on the motor 30 and electrically connected to the motor 30. The motor controller controls the operation of the motor 30, for example, controls the motor 30 to work in a set direction, speed, angle, response time, etc.

[0033] In the first working condition, the clutch 20 connects the range extender 10 and the motor 30, and the on-off mechanism 50 disconnects the speed reduction mechanism 40 and the wheel carrier, so that the range extender 10 starts and generates power. In this way, the power transmission of the range-extending power driving device to the wheel carrier for auxiliary driving is disconnected, the drag loss of the tire structure is reduced, the range extender 10 starts and generates power alone, and the energy consumed by driving the auxiliary wheel carrier is saved.

[0034] For example, when the battery of the vehicle has little power and needs to generate power to improve the battery power, the on-off mechanism 50 disconnects the speed reduction mechanism 40 and the wheel carrier, and disconnects the auxiliary driving structure of the vehicle. The range extender 10 is supplied with oil from the oil tank of the vehicle, so as to start and generate power of the range extender 10, charge the battery, save the power of the battery itself, and facilitate subsequent normal driving with the battery power.

[0035] In the second working condition, the clutch 20 disconnects the range extender 10 and the motor 30, and the on-off mechanism 50 connects the speed reduction mechanism 40 and the wheel carrier, so that the motor 30 drives the wheel carrier to realize kinetic energy recovery. In this way, the connection between the range extender 10 and the motor 30 is disconnected, the battery does not need to be charged, energy is saved, and the motor 30 drives the speed reduction mechanism 40 and the wheel carrier to rotate to provide auxiliary driving.

[0036] Specifically, in the embodiment of the present application, in the second working condition, the clutch 20 is in the disconnected state, the on-off mechanism 50 connects the reduction mechanism 40 and the wheel carrier of the vehicle, and the driving of the motor 30 on the wheel carrier is realized. For example, when the vehicle is in the process of deceleration by braking, the motor 30 can recover the kinetic energy generated by the wheel carrier to the battery pack of the vehicle, thereby realizing kinetic energy recovery and improving the cruising range of the vehicle.

[0037] For example, when the vehicle needs to overtake or climb a slope during driving, and a larger driving force is required, the clutch 20 is disconnected to disconnect the connection between the range extender 10 and the motor 30, the range extender 10 does not work, energy consumption is reduced, and the on-off mechanism 50 connects the reduction mechanism 40 and the wheel carrier, so that the motor 30 drives the wheel carrier and its tires to rotate through the reduction mechanism 40, providing auxiliary driving, realizing four-wheel drive mode with the main drive of the vehicle, providing a larger driving force, and recovering kinetic energy according to actual conditions.

[0038] In the embodiment of the present application, optionally, in the third working condition, the clutch 20 connects the range extender 10 and the motor 30, the on-off mechanism 50 connects the reduction mechanism 40 and the wheel carrier, and the torque size and direction relationship of the range extender 10 and the motor 30 are controlled to realize the driving of the wheel carrier by the motor 30 and the range extender 10 at the same time, or the driving of the wheel carrier by the range extender 10 and the motor 30 together. In this way, the range extender 10 is connected with the motor 30, specifically, the range extender 10 is supplied with oil from the oil tank of the vehicle to realize the starting and power generation of the range extender 10, and to charge the battery. And the on-off mechanism 50 connects the reduction mechanism 40 and the wheel carrier, so that the motor 30 drives the wheel carrier and its tires to rotate through the reduction mechanism 40, providing auxiliary driving, realizing four-wheel drive mode with the main drive of the vehicle, providing a larger driving force, and recovering kinetic energy according to actual conditions. That is, the starting and power generation of the range extender 10 and the auxiliary driving force provided to the wheel carrier can be realized at the same time, which can be applied to application scenarios that require charging and auxiliary driving at the same time.

[0039] Optionally, in the embodiment of the present application, the on-off mechanism 50 includes a first on-off member 51 and a second on-off member 52, and the wheel carrier includes a first tire 61 and a second tire 62 arranged at intervals; the first on-off member 51 is connected between the reduction mechanism 40 and the first tire 61, and the second on-off member 52 is connected between the reduction mechanism 40 and the second tire 62. In this way, the first on-off member 51 realizes the connection or disconnection between the differential 42 and the first tire 61, and the second on-off member 52 realizes the connection or disconnection between the differential 42 and the second tire 62, so that the first tire 61 and the second tire 62 can be controlled more accurately respectively.

[0040] For example, in the embodiment of the present application, the first on-off component 51 can be a combination of external spline and internal spline. When the internal spline is inserted into the external spline to engage, the communication between the differential 42 and the first tire 61 can be realized, and power transmission can be realized. When the internal spline is disengaged from the external spline, the disconnection between the differential 42 and the first tire 61 can be realized. The structure is simple, widely applicable, and easy to realize. In addition, the first on-off component 51 can also be a clutch mechanism. The communication between the differential 42 and the first tire 61 can be realized through the clutch mechanism. The present application has a relatively wide application. The specific type of the first on-off component 51 can not be limited in the embodiment of the present application.

[0041] Similarly, in the embodiment of the present application, the second on-off component 52 can also be a combination of external spline and internal spline. When the internal spline is inserted into the external spline to engage, the communication between the differential 42 and the second tire 62 can be realized, and power transmission can be realized. When the internal spline is disengaged from the external spline, the disconnection between the differential 42 and the second tire 62 can be realized. The structure is simple, widely applicable, and easy to realize. In addition, the second on-off component 52 can also be a clutch mechanism. The communication between the differential 42 and the second tire 62 can be realized through the clutch mechanism. The present application has a relatively wide application. The specific type of the second on-off component 52 can not be limited in the embodiment of the present application.

[0042] Optionally, in the embodiment of the present application, the first tire 61, the first on-off component 51, the second on-off component 52, and the second tire 62 are coaxially arranged. In this way, the first on-off component 51 and the second on-off component 52, the first on-off component 51 and the first tire 61, and the second on-off component 52 and the second tire 62 can realize relatively accurate and reliable power transmission, reduce power transmission loss, make the first tire 61 and the second tire 62 have better motion coordination, and improve assembly efficiency.

[0043] In the embodiment of the present application, the range extender 10, the clutch 20, and the motor 30 are coaxially arranged. In this way, the range extender 10 and the clutch 20 and the motor 30 can realize relatively accurate and reliable power transmission, reduce power transmission loss, and further improve assembly efficiency.

[0044] Optionally, in the embodiment of the present application, the reduction mechanism 40 includes a transmission 41 and a differential 42. The transmission 41 is connected to the motor 30, and the differential 42 is connected between the transmission 41 and the on-off mechanism 50. Specifically, the differential 42 can be connected between the first on-off component 51 and the second on-off component 52. For example, the transmission 41 can also be called a gearbox. The transmission 41 can realize the conversion and allocation of the power output by the motor 30. The differential 42 can make the first tire 61 and the second tire 62 be able to stably travel during driving.

[0045] In summary, the range extending power driving device described in the embodiments of the present application can at least have the following advantages:

[0046] In the embodiments of the present application, the range extending power driving device comprises a range extender, a clutch, a motor, a speed reduction mechanism and an on-off mechanism. The clutch is connected between the range extender and the motor to control the on-off between the range extender and the motor. The speed reduction mechanism is connected between the motor and the on-off mechanism. The on-off mechanism is used to connect a wheel carrier. The on-off between the speed reduction mechanism and the wheel carrier is controlled through the on-off mechanism. In this way, the on-off between the range extender and the motor can be controlled through the clutch according to the driving conditions during driving and actual needs, and the starting and power generation of the range extender are controlled. In addition, the on-off between the speed reduction mechanism and the wheel carrier is controlled through the on-off mechanism, and the driving and kinetic energy recovery of the wheel carrier are realized. Therefore, the range extending power driving device can realize power generation and driving functions according to actual needs. In addition, the embodiments of the present application reduce the number of motors and related structures, reduce the weight of the product, are beneficial to the lightweight design of the vehicle, and also reduce the production cost. The number of structural parts of the existing power generation mechanism and driving mechanism is reduced, and the overall architecture of the range extending power driving device is simplified.

[0047] The embodiments of the present application also propose a range extending power system, which comprises the range extending power driving device. In this way, the range extending power driving device can cooperate with the main drive system of the vehicle to realize the switching between two-wheel drive mode and four-wheel drive mode according to actual needs, and improve the overall economy of the vehicle.

[0048] The range extending power system described in the embodiments of the present application can at least have the following advantages:

[0049] In the embodiment of the present application, the range extending power system comprises a main driving device and the range extending power driving device, and the range extending power driving device comprises a range extender, a clutch, a motor, a speed reduction mechanism and an on-off mechanism. The clutch is connected between the range extender and the motor to control the on-off between the range extender and the motor. The speed reduction mechanism is connected between the motor and the on-off mechanism, and the on-off mechanism is used to connect a wheel frame. The on-off between the speed reduction mechanism and the wheel frame is controlled through the on-off mechanism. In this way, the on-off between the range extender and the motor can be controlled through the clutch according to the driving condition during driving and actual needs, and the starting and power generation of the range extender are controlled. In addition, the on-off between the speed reduction mechanism and the wheel frame is controlled through the on-off mechanism, and the driving and kinetic energy recovery of the wheel frame are realized. Therefore, the range extending power driving device can realize the functions of power generation and driving according to actual needs through time-sharing multiplexing. Moreover, the number of motors and related structures is reduced, the product weight is reduced, the lightweight design of the vehicle is facilitated, and the production cost is reduced. The number of structural components of the existing power generation mechanism and driving mechanism is reduced, and the overall architecture of the range extending power driving device is simplified.

[0050] The embodiment of the present application also provides a vehicle, which comprises the range extending power system or the range extending power driving device.

[0051] For example, in the embodiment of the present application, the vehicle can comprise a small car, a medium car, a three-door car, a truck, a trailer, a CDV (Car Derived Van, van based on a car platform), an MPV (multi-Purpose Vehicles, multi-purpose vehicle), an SUV (Sport Utility Vehicles, sport utility vehicle) and the like. The specific type of the vehicle is not limited in the embodiment of the present application.

[0052] The vehicle provided by the embodiment of the present application can at least have the following advantages:

[0053] In the embodiment of the present application, the vehicle comprises the range extending power system, or the range extending power driving device, the range extending power system comprises the main driving device and the range extending power driving device, the range extending power driving device comprises a range extender, a clutch, an electric machine, a speed reduction mechanism and an on-off mechanism, the clutch is connected between the range extender and the electric machine to control the on-off between the range extender and the electric machine, the speed reduction mechanism is connected between the electric machine and the on-off mechanism, the on-off mechanism is used to connect a wheel frame, and the on-off between the speed reduction mechanism and the wheel frame is controlled through the on-off mechanism. In this way, the on-off between the range extender and the electric machine can be controlled through the clutch according to the driving condition in the driving process and actual needs, and the starting and power generation of the range extender are controlled, and the on-off between the speed reduction mechanism and the wheel frame is controlled through the on-off mechanism, and the driving and kinetic energy recovery of the wheel frame are realized, so that the range extending power driving device can realize the functions of power generation and driving in time sharing and multiplexing according to actual needs. Moreover, the number of the electric machine and related structures is reduced, the product weight is reduced, the light weight design of the vehicle is facilitated, and the production cost is reduced. The structure parts of the existing power generation mechanism and driving mechanism are reduced, and the overall structure of the range extending power driving device is simplified.

[0054] In the description of the present specification, the description of the terms "one embodiment", "some embodiments", "exemplary embodiment", "example", "specific example", or "some examples" means that the specific features, structures, materials or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present application. In the present specification, the exemplary description of the above terms does not necessarily mean the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0055] Although the embodiments of the present application have been shown and described, those skilled in the art can understand that various changes, modifications, replacements and variations can be made to the embodiments without departing from the principles and purposes of the present application, and the scope of the present application is defined by the claims and their equivalents.

Claims

1. A range-extending power drive device, characterized in that, include: Range extender (10), clutch (20), motor (30), reduction gear (40) and switching mechanism (50); The clutch (20) is connected between the range extender (10) and the motor (30) to control the on / off connection between the range extender (10) and the motor (30); The deceleration mechanism (40) is connected between the motor (30) and the switching mechanism (50). The switching mechanism (50) is used to connect the wheel frame and control the connection and disconnection between the deceleration mechanism (40) and the wheel frame.

2. The range-extended power drive device according to claim 1, characterized in that, In the first operating condition, the clutch (20) connects the range extender (10) and the motor (30), and the switching mechanism (50) disconnects the reduction mechanism (40) and the wheel frame to enable the range extender (10) to start and generate electricity.

3. The range-extended power drive device according to claim 1, characterized in that, In the second operating condition, the clutch (20) disconnects the range extender (10) and the motor (30), and the switching mechanism (50) connects the reduction mechanism (40) and the wheel frame, so that the motor (30) drives the wheel frame to realize kinetic energy recovery.

4. The range-extended power drive device according to claim 1, characterized in that, In the third operating condition, the clutch (20) connects the range extender (10) and the motor (30), and the switching mechanism (50) connects the reduction mechanism (40) and the wheel frame. By controlling the torque magnitude and direction relationship between the range extender (10) and the motor (30), the motor (30) and the range extender (10) drive the wheel frame to generate electricity at the same time, or the range extender (10) and the motor (30) jointly drive the wheel frame.

5. The range-extended power drive device according to any one of claims 1-4, characterized in that, The switching mechanism (50) includes a first switching element (51) and a second switching element (52), and the wheel frame includes a first tire (61) and a second tire (62) arranged at intervals. The first switch (51) is connected between the deceleration mechanism (40) and the first tire (61), and the second switch (52) is connected between the deceleration mechanism (40) and the second tire (62).

6. The range-extended power drive device according to claim 5, characterized in that, The first tire (61), the first switch (51), the second switch (52) and the second tire (62) are coaxially arranged.

7. The range-extended power drive device according to any one of claims 1-4, characterized in that, The range extender (10), the clutch (20), and the motor (30) are arranged coaxially.

8. The range-extended power drive device according to any one of claims 1-4, characterized in that, The reduction mechanism (40) includes a gearbox (41) and a differential (42), the differential (42) being connected to the motor (30) and the differential (42) being connected between the gearbox (41) and the switching mechanism (50).

9. A range-extending power system, characterized in that, The range-extended power system includes the range-extended power drive device as described in any one of claims 1-8.

10. A vehicle, characterized in that, The vehicle includes the range-extended power system of claim 9, or the range-extended power drive device of any one of claims 1-8.

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