Multi-axle driving system and vehicle

Abstract

The embodiment of the invention provides a multi-shaft driving system and a vehicle, the multi-shaft driving system comprises a first speed reducer, the first speed reducer comprises a first motor and a first transmission assembly, and the first motor is connected with the first transmission assembly; the second speed reducer comprises a synchronizer, a second motor and a second transmission assembly. The synchronizer and the second transmission assembly are connected with the second motor. Wherein during single-shaft driving, the first motor is started, and the synchronizer is in a disengaged state, and when double-shaft driving is needed, the second motor is started, and the synchronizer is in a locked state. When the multi-shaft driving system carries out single-shaft driving, the second speed reducer can be disconnected through the synchronizer, power consumption can be reduced, and driving is carried out through the first motor, and when multi-shaft driving is carried out, locking can be carried out through the synchronizer, so that the first speed reducer and the second speed reducer synchronously rotate, and the second motor drives the first transmission assembly and the second transmission assembly to rotate; therefore, the trafficability of the vehicle is improved.

Description

Technical Field

[0001] The present application relates to the technical field of reducers, and in particular to a multi-axis drive system and a vehicle. Background Art

[0002] The electric vehicle reducer is an important component in the vehicle transmission system. Its main function is to convert the high rotational torque of the motor into the low and high torque of the wheels, thereby realizing the driving of the vehicle.

[0003] In the relevant technologies, reducers are undergoing various forms of evolution. Therefore, for vehicles using reducers, how to improve the vehicle's passability is particularly important. Summary of the invention

[0004] The purpose of the embodiments of the present application is to provide a multi-axle drive system and a vehicle, which can improve the vehicle's passability.

[0005] In the first aspect, an embodiment of the present application provides a multi-axis drive system, comprising: a first reducer, comprising a first motor and a first transmission assembly, the first motor being connected to the first transmission assembly; a second reducer, comprising a synchronizer, a second motor and a second transmission assembly, the synchronizer and the second transmission assembly being respectively connected to the second motor; wherein when a single axis is driven, the first motor is started and the synchronizer is in a disengaged state, and when a dual axis drive is required, the second motor is started and the synchronizer is in a locked state.

[0006] In the above implementation process, the first transmission component is connected to the first motor, the second transmission component is connected to the second motor, and the synchronizer is connected to the second motor, so that when the multi-axis drive system performs single-axis drive, the second reducer can be disconnected by the synchronizer to reduce power consumption and be driven by the first motor. When multi-axis drive is performed, the synchronizer can be locked so that the first reducer and the second reducer rotate synchronously, and the second motor drives the first transmission component and the second transmission component to rotate, thereby improving the vehicle's passability.

[0007] In some embodiments, the first transmission assembly includes a first driving wheel, a first driven wheel, a first intermediate shaft and a first driven wheel, the first driving wheel is connected to the first motor, the first driven wheel is meshed with the first driving wheel, the first intermediate shaft is respectively connected to the first driven wheel and the first driven wheel, and the first driven wheel is connected to the synchronizer.

[0008] In the above implementation process, the first driving wheel, the first passive wheel, the first intermediate shaft and the first driven wheel are connected to form a whole, so that when the multi-axis drive system performs single-axis drive, the first motor can drive the first driving wheel, the first passive wheel, the first intermediate shaft and the first driven wheel to rotate, and then output power; when multi-axis drive is performed, the second motor can drive the first driven wheel to rotate to achieve power output, improve the vehicle's passing efficiency, simplify the structure of the multi-axis drive system, and significantly improve the economy and comfort of the whole vehicle.

[0009] In some embodiments, the first transmission assembly further includes a second driving wheel, and the second driving wheel is sleeved on the first intermediate shaft.

[0010] In the above implementation process, after the second driving wheel is connected to the first intermediate shaft, no matter whether the multi-axis drive system performs single-axis drive or multi-axis drive, when the first motor or the second motor is working, the power can be output by the second driving wheel to realize single-axis or multi-axis drive, which is beneficial to reduce power consumption, simplify the structure of the multi-axis drive system, and significantly improve the economy and comfort of the whole vehicle.

[0011] In some embodiments, the first transmission assembly further includes a first input shaft, and the first input shaft is connected to the first motor and the first driving wheel respectively. By connecting the first input shaft to the first driving wheel, when the first motor is working, its power can be output to the first driving wheel through the first input shaft, thereby realizing power transmission and finally completing the driving of the single shaft.

[0012] In some embodiments, the first transmission assembly further includes a second passive wheel, and the second passive wheel is meshed with the second driving wheel. By connecting the second passive wheel with the second driving wheel, when single-axis drive or multi-axis drive is performed, the second passive wheel and the second driving wheel are meshed to finally achieve power output, thereby improving the vehicle's passing ability.

[0013] In some embodiments, the first speed reducer further includes a first differential, which is connected to the first transmission assembly, can achieve high speed ratio transmission, has high transmission efficiency and torque transmission capacity, and is connected to the first transmission assembly to increase the space inside the vehicle, which is beneficial to the layout of the entire vehicle.

[0014] In some embodiments, the second transmission assembly includes a third driving wheel, a second driven wheel, a second intermediate shaft and a fourth driving wheel, the third driving wheel is connected to the second motor, the second driven wheel is meshed with the third driving wheel, and the second intermediate shaft is respectively connected to the second driven wheel and the fourth driving wheel.

[0015] In the above implementation process, the third driving wheel, the second driven wheel, the second intermediate shaft and the fourth driving wheel are connected to form a whole, so that when the multi-axis drive system performs multi-axis drive, the third driving wheel can be driven by the second motor to rotate, and the fourth driving wheel can output power, thereby improving the vehicle's passing efficiency, simplifying the structure of the multi-axis drive system, and significantly improving the economy and comfort of the whole vehicle.

[0016] In some embodiments, the second transmission assembly further includes a third passive wheel, and the third passive wheel is meshed with the fourth driving wheel. By connecting the third passive wheel with the fourth driving wheel, when multi-axis driving is performed, the third passive wheel and the fourth driving wheel are meshed, and finally the power output is realized, thereby improving the vehicle's passing ability.

[0017] In some embodiments, the second transmission assembly further includes a second input shaft, and the second input shaft is connected to the synchronizer and the second motor respectively. The synchronizer is connected to the second motor through the second input shaft, so that when a single-axis drive is performed, the synchronizer is switched to a disengaged state, reducing power consumption, and when a multi-axis drive is performed, the synchronizer is switched to a locked state, and the second input shaft outputs the power of the second motor to achieve synchronous rotation of the first reducer and the second reducer, thereby improving the vehicle's passing ability.

[0018] In some embodiments, the second speed reducer further includes a second differential, and the second differential is connected to the second transmission assembly, so as to realize high-speed ratio transmission, have high transmission efficiency and torque transmission capacity, and be connected to the second transmission assembly to increase the space inside the vehicle, which is beneficial to the layout of the whole vehicle.

[0019] In a second aspect, the present application further provides a vehicle, comprising: running wheels; and a multi-axle drive system as described in any one of the above items, wherein a first differential and a second differential of the multi-axle drive system are respectively connected to the running wheels.

[0020] Since the vehicle provided in the second aspect includes a multi-axis drive system, the vehicle has all the technical effects of the multi-axis drive system, which will not be repeated here.

[0021] Other features and advantages of the present disclosure will be set forth in the following description, or some features and advantages may be inferred or unambiguously determined from the description, or may be learned by implementing the above-mentioned technology of the present disclosure.

[0022] In order to make the above-mentioned objects, features and advantages of the present application more obvious and easy to understand, preferred embodiments are specifically cited below and described in detail with reference to the attached drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings required for use in the embodiments of the present application will be briefly introduced below. It should be understood that the following drawings only show certain embodiments of the present application and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other related drawings can be obtained based on these drawings without paying creative work.

[0024] Figure 1 A schematic diagram of the structure of a multi-axis drive system provided in an embodiment of the present application.

[0025] Reference numerals

[0026] 100, first reducer; 101, first motor; 102, first driving wheel; 103, first driven wheel; 104, first intermediate shaft; 105, first driven wheel; 106, second driving wheel; 107, first input shaft; 108, second driven wheel; 109, first differential; 110, first half shaft; 200, second reducer; 201, synchronizer; 202, second motor; 203, third driving wheel; 204, second driven wheel; 205, second intermediate shaft; 206, fourth driving wheel; 207, third driven wheel; 208, second input shaft; 209, second differential; 210, second half shaft; 300, running wheel. DETAILED DESCRIPTION

[0027] The technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all of the embodiments. The components of the embodiments of the present application described and shown in the drawings here can be arranged and designed in various different configurations. Therefore, the following detailed description of the embodiments of the present application provided in the drawings is not intended to limit the scope of the application claimed for protection, but merely represents the selected embodiments of the present application. Based on the embodiments of the present application, all other embodiments obtained by those skilled in the art without making creative work belong to the scope of protection of the present application.

[0028] In the present application, the terms "upper", "lower", "left", "right", "front", "back", "top", "bottom", "inner", "outer", "middle", "vertical", "horizontal", "lateral", "longitudinal" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the drawings. These terms are mainly used to better describe the present application and its embodiments, and are not used to limit the indicated devices, elements or components to have a specific orientation, or to be constructed and operated in a specific orientation.

[0029] In addition, some of the above terms may be used to express other meanings in addition to indicating orientation or positional relationship. For example, the term "on" may also be used to express a certain dependency or connection relationship in some cases. For those of ordinary skill in the art, the specific meanings of these terms in this application can be understood according to specific circumstances.

[0030] In addition, the terms "installed", "set", "provided with", "connected", and "connected" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral structure; it can be a mechanical connection, or a point connection; it can be a direct connection, or an indirect connection through an intermediate medium, or it can be an internal connection between two devices, elements, or components. For those of ordinary skill in the art, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0031] In addition, the terms "first", "second", etc. are mainly used to distinguish different devices, elements or components (the specific types and structures may be the same or different), and are not used to indicate or imply the relative importance and quantity of the indicated devices, elements or components. Unless otherwise specified, "plurality" means two or more.

[0032] Example

[0033] The types of reducers for electric vehicles mainly include cylindrical gear reducers, worm reducers and planetary gear reducers. These reducers are further subdivided into single-speed and multi-speed reducers as well as expansion, split and coaxial reducers according to the different transmission levels and layout forms. According to the trend of high-speed motors, reducers are undergoing a product evolution process from single-speed to multi-speed, including single-speed reducers, two-speed reducers and multi-speed reducers.

[0034] During the design process, the inventor discovered that the reducers currently on the market are mostly cylindrical gear, parallel shaft and single-speed types, which have the disadvantages of poor passability and difficulty in layout as the torque increases.

[0035] In view of this, if Figure 1 As shown, in the first aspect, an embodiment of the present application provides a multi-axis drive system, including: a first reducer 100, including a first motor 101 and a first transmission assembly, the first motor 101 is connected to the first transmission assembly; a second reducer 200, including a synchronizer 201, a second motor 202 and a second transmission assembly, the synchronizer 201 and the second transmission assembly are respectively connected to the second motor 202; wherein when a single-axis drive is required, the first motor 101 is started, and the synchronizer 201 is in a disengaged state, and when a dual-axis drive is required, the second motor 202 is started, and the synchronizer 201 is in a locked state.

[0036] Exemplarily, the synchronizer 201 is disposed between the first transmission assembly and the second transmission assembly, and the second motor 202 is connected to the synchronizer 201, so that the user can switch the operation of the first motor 101 or the second motor 202 according to actual conditions, thereby realizing single-axis or multi-axis driving.

[0037] It can be understood that the multi-axis drive system may also include a motor controller (not shown in the figure). The layout position of the motor controller is not specifically limited and can be arranged according to actual conditions. The motor controller is connected to the first motor 101 and the second motor 202. The motor controller can receive various signals and information from the vehicle, including vehicle speed, acceleration, steering angle, etc., and then adjust the operating status of the first motor 101 and the second motor 202 in real time according to this information. Under the control of the motor controller, the first motor 101 and the second motor 202 can accurately adjust the speed and torque according to the actual needs of the vehicle, thereby achieving more efficient and smooth driving.

[0038] In the above-mentioned implementation process, the first transmission component is connected to the first motor 101, the second transmission component is connected to the second motor 202, and the synchronizer 201 is connected to the second motor 202, so that when the multi-axis drive system performs single-axis drive, the second reducer 200 can be disconnected by the synchronizer 201 to reduce power consumption and be driven by the first motor 101. When multi-axis drive is performed, the synchronizer 201 can be locked so that the first reducer 100 and the second reducer 200 rotate synchronously, and the second motor 202 drives the first transmission component and the second transmission component to rotate, thereby improving the vehicle's passability.

[0039] In some embodiments, the first transmission assembly includes a first driving wheel 102, a first driven wheel 103, a first intermediate shaft 104 and a first driven wheel 105, the first driving wheel 102 is connected to the first motor 101, the first driven wheel 103 is meshed with the first driving wheel 102, the first intermediate shaft 104 is respectively connected to the first driven wheel 103 and the first driven wheel 105, and the first driven wheel 105 is connected to the synchronizer 201.

[0040] Exemplarily, when the multi-axis drive system needs to perform single-axis drive, the first motor 101 drives the first driving wheel 102 to rotate, and then drives the first intermediate shaft 104 to rotate through the engagement of the first driving wheel 102 with the first passive wheel 103, and then the first intermediate shaft 104 outputs power to enable the vehicle to move.

[0041] In the above-mentioned implementation process, the first driving wheel 102, the first passive wheel 103, the first intermediate shaft 104 and the first driven wheel 105 are connected to form a whole, so that when the multi-axis drive system performs single-axis drive, the first motor 101 can drive the first driving wheel 102, the first passive wheel 103, the first intermediate shaft 104 and the first driven wheel 105 to rotate, and then output power. When performing multi-axis drive, the second motor 202 can drive the first driven wheel 105 to rotate to achieve power output, improve the vehicle's passing efficiency, simplify the structure of the multi-axis drive system, and significantly improve the economy and comfort of the whole vehicle.

[0042] In some embodiments, the first transmission assembly further includes a second driving wheel 106, and the second driving wheel 106 is sleeved on the first intermediate shaft 104. That is, the power of the first motor 101 and / or the second motor 202 can be output to the second driving wheel 106 through the first intermediate shaft 104, and the second driving wheel 106 is output to the running wheel 300 through the differential of the first reducer 100, thereby completing the power transmission.

[0043] In the above-mentioned implementation process, after the second driving wheel 106 is connected to the first intermediate shaft 104, no matter whether the multi-axis drive system performs single-axis drive or multi-axis drive, when the first motor 101 or the second motor 202 is working, the second driving wheel 106 can output power to realize single-axis or multi-axis drive, which is beneficial to reduce power consumption, simplify the structure of the multi-axis drive system, and significantly improve the economy and comfort of the whole vehicle.

[0044] In some embodiments, the first transmission assembly further includes a first input shaft 107, and the first input shaft 107 is respectively connected to the first motor 101 and the first driving wheel 102. The first input shaft 107 and the rotor shaft of the first motor 101 are integrated to solve the problem of centering and improve NVH performance.

[0045] By connecting the first input shaft 107 to the first driving wheel 102, when the first motor 101 is working, its power can be output to the first driving wheel 102 through the first input shaft 107, thereby realizing power transmission and finally completing the single-axis driving.

[0046] In some embodiments, the first transmission assembly further includes a second passive wheel 108, and the second passive wheel 108 is meshed with the second driving wheel 106. By connecting the second passive wheel 108 with the second driving wheel 106, when single-axis drive or multi-axis drive is performed, the second passive wheel 108 and the second driving wheel 106 are meshed, and finally the power output can be realized, thereby improving the vehicle's passing ability.

[0047] In some embodiments, the first reducer 100 further includes a first differential 109, which is connected to the first transmission assembly, can achieve high-speed ratio transmission, has high transmission efficiency and torque transmission capacity, and is connected to the first transmission assembly to increase the space inside the vehicle, which is beneficial to the layout of the entire vehicle.

[0048] Please refer to Figure 1 The second transmission assembly includes a third driving wheel 203, a second driven wheel 204, a second intermediate shaft 205 and a fourth driving wheel 206, the third driving wheel 203 is connected to the second motor 202, the second driven wheel 204 is meshed with the third driving wheel 203, and the second intermediate shaft 205 is respectively connected to the second driven wheel 204 and the fourth driving wheel 206.

[0049] Exemplarily, when the multi-axis drive system needs to perform multi-axis drive, the synchronizer 201 is in a locked state, and the second motor 202 drives the third driving wheel 203 to rotate, and then through the engagement of the third driving wheel 203 with the second driven wheel 204 and the engagement of the third driving wheel 203 with the first driven wheel 105, the first intermediate shaft 104 and the second intermediate shaft 205 are driven to rotate, and then the first intermediate shaft 104 and the second intermediate shaft 205 output power to enable the vehicle to move.

[0050] In the above implementation process, the third driving wheel 203, the second driven wheel 204, the second intermediate shaft 205 and the fourth driving wheel 206 are connected to form a whole, so that when the multi-axis drive system performs multi-axis drive, the third driving wheel 203 can be driven by the second motor 202 to rotate, and the fourth driving wheel 206 outputs power, thereby improving the vehicle's passing efficiency, simplifying the structure of the multi-axis drive system, and significantly improving the economy and comfort of the whole vehicle.

[0051] In some embodiments, the second transmission assembly further includes a third passive wheel 207, and the third passive wheel 207 is meshed with the fourth driving wheel 206. By connecting the third passive wheel 207 with the fourth driving wheel 206, when multi-axis driving is performed, the third passive wheel 207 and the fourth driving wheel 206 are meshed, and finally the power output can be realized, thereby improving the vehicle's passing ability.

[0052] In some embodiments, the second transmission assembly further includes a second input shaft 208, which is respectively connected to the synchronizer 201 and the second motor 202. The second input shaft 208 and the rotor shaft of the second motor 202 are integrated to solve the problem of centering and improve NVH performance.

[0053] The synchronizer 201 is connected to the second motor 202 through the second input shaft 208, so that when single-axis driving is performed, the synchronizer 201 is switched to a disengaged state to reduce power consumption, and when multi-axis driving is performed, the synchronizer 201 is switched to a locked state, and the second input shaft 208 outputs the power of the second motor 202 to achieve synchronous rotation of the first reducer 100 and the second reducer 200, thereby improving the vehicle's passability.

[0054] In some embodiments, the second reducer 200 further includes a second differential 209, which is connected to the second transmission assembly, so as to realize high-speed ratio transmission, have high transmission efficiency and torque transmission capacity, and is connected to the second transmission assembly to increase the space inside the vehicle, which is beneficial to the layout of the whole vehicle.

[0055] Please refer to Figure 1 In a second aspect, the present application further provides a vehicle, comprising: a running wheel 300; and a multi-axis drive system as described above, wherein a first differential 109 and a second differential 209 of the multi-axis drive system are respectively connected to the running wheel 300.

[0056] Exemplarily, the vehicle also includes a first half-shaft 110 and a second half-shaft 210, the running wheels 300 are arranged in two rows, and each row of the running wheels 300 is provided with at least one, the first half-shaft 110 is provided with two, and the two first half-shafts 110 are respectively connected to the first differential 109 and the running wheels 300 in the first row, and the second half-shaft 210 is provided with two, and the two second half-shafts 210 are respectively connected to the second differential 209 and the running wheels 300 in the second row.

[0057] The vehicle may be a fuel vehicle, a gas vehicle or a new energy vehicle, and the new energy vehicle may be a pure electric vehicle, a hybrid vehicle or an extended-range vehicle, etc.

[0058] Since the vehicle provided in the second aspect includes a multi-axis drive system, the vehicle has all the technical effects of the multi-axis drive system, which will not be repeated here.

[0059] In all the embodiments of the present application, "big" and "small" are relative, "more" and "less" are relative, and "up" and "down" are relative. The expressions of such relative terms are not elaborated in the embodiments of the present application.

[0060] It should be understood that the "in this embodiment", "in the embodiment of the present application" or "as an optional implementation" mentioned throughout the specification means that the specific features, structures or characteristics related to the embodiment are included in at least one embodiment of the present application. Therefore, "in this embodiment", "in the embodiment of the present application" or "as an optional implementation" appearing throughout the specification does not necessarily refer to the same embodiment. In addition, these specific features, structures or characteristics can be combined in one or more embodiments in any suitable manner. Those skilled in the art should also be aware that the embodiments described in the specification are all optional embodiments, and the actions and modules involved are not necessarily required for the present application.

[0061] In the various embodiments of the present application, it should be understood that the size of the serial numbers of the above-mentioned processes does not necessarily mean the order of execution. The execution order of each process should be determined by its function and internal logic, and should not constitute any limitation on the implementation process of the embodiments of the present application.

[0062] The above is only a specific implementation of the present application, but the protection scope of the present application is not limited thereto. Any person skilled in the art who is familiar with the present technical field can easily think of changes or substitutions within the technical scope disclosed in the present application, which should be included in the protection scope of the present application. Therefore, the protection scope of the present application should be based on the protection scope of the claims.

Claims

1. A multi-axis drive system, characterized in that: include: A first reducer, comprising a first motor and a first transmission assembly, wherein the first motor is connected to the first transmission assembly; A second reducer, comprising a synchronizer, a second motor and a second transmission assembly, wherein the synchronizer and the second transmission assembly are respectively connected to the second motor; When single-axis driving is required, the first motor is started and the synchronizer is in a disengaged state. When dual-axis driving is required, the second motor is started and the synchronizer is in a locked state.

2. The multi-axis drive system according to claim 1, characterized in that: The first transmission assembly includes a first driving wheel, a first driven wheel, a first intermediate shaft and a first driven wheel, the first driving wheel is connected to the first motor, the first driven wheel is meshed with the first driving wheel, the first intermediate shaft is respectively connected to the first driven wheel and the first driven wheel, and the first driven wheel is connected to the synchronizer.

3. The multi-axis drive system according to claim 2, characterized in that: The first transmission assembly also includes a second driving wheel, and the second driving wheel is sleeved on the first intermediate shaft.

4. The multi-axis drive system according to claim 2, characterized in that: The first transmission assembly also includes a first input shaft, and the first input shaft is respectively connected to the first motor and the first driving wheel.

5. The multi-axis drive system according to claim 3, characterized in that: The first transmission assembly further includes a second passive wheel, and the second passive wheel is meshed with the second active wheel.

6. The multi-axis drive system according to any one of claims 1 to 5, characterized in that: The first speed reducer further includes a first differential, and the first differential is connected to the first transmission assembly.

7. The multi-axis drive system according to any one of claims 1 to 5, characterized in that: The second transmission assembly includes a third driving wheel, a second driven wheel, a second intermediate shaft and a fourth driving wheel, the third driving wheel is connected to the second motor, the second driven wheel is meshed with the third driving wheel, and the second intermediate shaft is respectively connected to the second driven wheel and the fourth driving wheel.

8. The multi-axis drive system according to claim 7, characterized in that: The second transmission assembly further includes a third passive wheel, and the third passive wheel is meshed with the fourth driving wheel.

9. The multi-axis drive system according to claim 7, characterized in that: The second transmission assembly further includes a second input shaft, and the second input shaft is respectively connected to the synchronizer and the second motor.

10. The multi-axis drive system according to claim 8, characterized in that: The second speed reducer further includes a second differential, and the second differential is connected to the second transmission assembly.

11. A vehicle, characterized in that: include: Traveling wheels; and According to the multi-axis drive system as described in any one of claims 1 to 10, the first differential and the second differential of the multi-axis drive system are respectively connected to the driving wheels.

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