Distributed driving system and vehicle

Abstract

The utility model discloses a distributed driving system and a vehicle. The distributed driving system comprises an engine, a driving device and a controller, the synchronizing mechanism and the engine can be in a power coupling state or a power disconnection state; the first driving module comprises a first motor and a first speed reducing mechanism, and the power input end of the first speed reducing mechanism is in transmission connection with the first power output end of the synchronizing mechanism and the power output end of the first motor; the second driving module comprises a second motor and a second speed reducing mechanism, and the power input end of the second speed reducing mechanism is in transmission connection with the second power output end of the synchronizing mechanism and the power output end of the second motor; and the coupling and disconnecting mechanism is used for realizing power connection or disconnecting power connection between the first driving module and the second driving module. Compared with the prior art, the engine is integrated in the distributed driving system, so that the endurance mileage is increased, and the mileage anxiety is reduced.

Description

Technical Field

[0001] This utility model relates to the field of vehicle drive system technology, and in particular to a distributed drive system and a vehicle. Background Technology

[0002] A distributed drive system consists of different motors that independently drive each wheel of the vehicle. The torque and speed of each wheel can be precisely controlled independently by different or the same controllers. Vehicles with this drive system offer several advantages, such as a smaller turning radius and more efficient vehicle stability control, improving handling performance. Furthermore, dual motors can achieve higher power, better off-road capability, and increased safety redundancy.

[0003] Existing distributed drive systems all use dual-motor drive, with all power coming from the battery pack. The size of the battery pack affects the driving range, increasing users' range anxiety. At the same time, most of them currently use a parallel shaft arrangement without a coupling mechanism. If one motor fails during driving, the power to that wheel will be interrupted. Utility Model Content

[0004] The purpose of this invention is to provide a distributed drive system and vehicle to solve the technical problems in the prior art, which can increase driving range and reduce range anxiety.

[0005] In a first aspect, this utility model provides a distributed driving system, comprising:

[0006] engine;

[0007] The synchronizing mechanism has a first power output end and a second power output end. The synchronizing mechanism and the engine can be in a power coupled state or a power disconnected state. When in the power coupled state, the power of the engine is transmitted to the first power output end or the second power output end.

[0008] The first drive module includes a first motor and a first reduction mechanism. The power input end of the first reduction mechanism is connected to the first power output end of the synchronization mechanism and the power output end of the first motor, respectively.

[0009] The second drive module includes a second motor and a second reduction mechanism. The power input end of the second reduction mechanism is connected to the second power output end of the synchronization mechanism and the power output end of the second motor, respectively.

[0010] The coupling disconnection mechanism is used to establish or disconnect the power connection between the first drive module and the second drive module.

[0011] In the distributed drive system described above, preferably, the first motor and the second motor are arranged in parallel side by side.

[0012] In the distributed drive system described above, preferably, the power output end of the engine is connected to a first output shaft;

[0013] The synchronization mechanism includes a first drive gear, a second drive gear, and a synchronizer, wherein:

[0014] Both the first drive gear and the second drive gear are loosely fitted on the first output shaft, so that the synchronization mechanism and the engine are in a power disconnected state;

[0015] The synchronizer can move along a preset path. When the synchronizer is at the end of the preset path, the first drive gear or the second drive gear forms a power connection with the first output shaft, so that the synchronization mechanism and the engine are in a power coupling state.

[0016] In the distributed drive system described above, preferably, the first reduction mechanism includes a first planetary gear set and a first parallel shaft transmission gear pair that are connected in a transmission connection, wherein the power input end of the first parallel shaft transmission gear pair is connected in a transmission connection to the power output end of the first motor.

[0017] In the distributed drive system described above, preferably, the power output end of the first motor is connected to a first motor power output gear, the first parallel shaft transmission gear pair includes a first reduction transmission shaft and a first reduction transmission gear fixed on the first reduction transmission shaft, the first reduction transmission shaft is connected to the sun gear of the first planetary gear set, and the first drive gear, the first reduction transmission gear and the first motor power output gear mesh sequentially.

[0018] In the distributed drive system described above, preferably, the second reduction mechanism includes a second planetary gear set and a second parallel shaft transmission gear pair that are connected in a transmission connection, wherein the power input end of the second parallel shaft transmission gear pair is connected in a transmission connection to the power output end of the second motor.

[0019] In the distributed drive system described above, preferably, the power output end of the second motor is connected to a second motor power output gear, the second parallel shaft transmission gear pair includes a second reduction transmission shaft and a second reduction transmission gear fixed on the second reduction transmission shaft, the second reduction transmission shaft is connected to the sun gear of the second planetary gear set, and the second drive gear, the second reduction transmission gear and the second motor power output gear mesh sequentially.

[0020] In the distributed drive system described above, preferably, the coupling disconnection mechanism is integrated on the first reduction drive shaft and the second reduction drive shaft, respectively.

[0021] In a distributed drive system as described above, preferably, it further includes a clutch and a generator, wherein the first output shaft is connected to the inner hub of the clutch, and the rotor of the generator is connected to the outer hub of the clutch.

[0022] Secondly, this utility model provides a vehicle including the aforementioned distributed drive system.

[0023] Compared with the prior art, this utility model increases the driving range and reduces range anxiety by integrating the engine into the distributed drive system. When one motor fails during driving, the engine can intervene to drive and ensure driving safety. At the same time, the distributed drive system is also equipped with a coupling disconnection mechanism. When the vehicle needs to get out of trouble, the coupling disconnection mechanism can be used to make both motors work at the same time, or the engine can participate in driving, further increasing the ability to get out of trouble. Attached Figure Description

[0024] Figure 1 This is a schematic diagram of the distributed drive system provided in an embodiment of the present invention.

[0025] Explanation of reference numerals in the attached figures:

[0026] 10 - Engine, 11 - First output shaft;

[0027] 20 - Synchronization mechanism, 21 - First drive gear, 22 - Second drive gear, 23 - Synchronizer;

[0028] 30 - First drive module; 31 - First motor; 311 - First motor power output gear; 32 - First reduction mechanism; 321 - First reduction transmission shaft; 322 - First reduction transmission gear; 33 - First planetary gear set;

[0029] 40 - Second drive module; 41 - Second motor; 411 - Second motor power output gear; 42 - Second reduction mechanism; 421 - Second reduction transmission shaft; 422 - Second reduction transmission gear; 43 - Second planetary gear set;

[0030] 50 - Coupling disconnect mechanism;

[0031] 60 - Clutch. Detailed Implementation

[0032] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote 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 this utility model, and should not be construed as limiting this utility model.

[0033] like Figure 1 As shown, an embodiment of this utility model provides a distributed drive system, including an engine 10, a synchronization mechanism 20, a first drive module 30, a second drive module 40, and a coupling disconnection mechanism 50, wherein:

[0034] As one of the power sources, engine 10 can be coupled into the existing distributed drive system to increase driving range and reduce range anxiety.

[0035] In one feasible implementation, the power output end of the engine 10 is connected to a first output shaft 11, which is connected to the inner hub of the clutch 60. The outer hub of the clutch 60 is connected to the rotor of a generator (not shown). The clutch 60 is used to control the transmission or disconnection of power, and the generator is used to convert mechanical energy into electrical energy. When the clutch 60 is engaged, the power of the engine 10 is transmitted to the outer hub via the inner hub of the clutch 60, thereby driving the rotor of the generator to rotate, realizing the conversion of mechanical energy into electrical energy and providing additional power support for the vehicle. When the clutch 60 is disengaged, the power between the first output shaft 11 and the generator is disconnected, and the generator does not generate electricity.

[0036] The synchronizing mechanism 20 has a first power output end and a second power output end. The synchronizing mechanism 20 and the engine 10 can be in a power coupled state or a power disconnected state. When in a power coupled state, the power of the engine 10 is transmitted to the first power output end or the second power output end. When in a power coupled state, the power of the engine 10 can be selectively transmitted to the first power output end or the second power output end, thereby realizing flexible power distribution.

[0037] The first drive module 30 includes a first motor 31 and a first reduction mechanism 32. The power input end of the first reduction mechanism 32 is connected to the first power output end of the synchronization mechanism 20 and the power output end of the first motor 31 respectively. The power transmitted by the first motor 31 and / or the engine 10 is reduced by the first reduction mechanism 32 and drives the corresponding wheels.

[0038] The second drive module 40 includes a second motor 41 and a second reduction mechanism 42. The power input end of the second reduction mechanism 42 is connected to the second power output end of the synchronization mechanism 20 and the power output end of the second motor 41 respectively. The power transmitted by the second motor 41 and / or the engine 10 is reduced by the second reduction mechanism 42 and then drives the corresponding wheels.

[0039] The coupling disconnection mechanism 50 is used to connect or disconnect the power connection between the first drive module 30 and the second drive module 40. It can flexibly control the power transmission relationship between the two drive modules according to actual needs, thereby realizing different escape modes.

[0040] Based on the distributed driver system provided in the above embodiments, multiple driver modes can be provided, including:

[0041] 1. Idle power generation mode: When the vehicle is stationary, the first motor 31 and the second motor 41 are not working, the synchronization mechanism 20 is disconnected from the engine 10, the clutch 60 is engaged, the engine 10 inputs power, and then drives the generator to work to realize the power generation function.

[0042] 2. Pure Electric Mode: The coupling disconnection mechanism 50 is not working, the power connection between the first drive module 30 and the second drive module 40 is disconnected, the synchronization mechanism 20 and the engine 10 are in a power disconnected state, the clutch 60 is not working, the first motor 31 and the second motor 41 input power, and output to their respective wheels through the first reduction mechanism 32 and the second reduction mechanism 42.

[0043] 3. Single motor + engine 10 drive mode: The first motor 31 or the second motor 41 works. If the first motor 31 works and the second motor 41 does not work, the power of the first motor 31 is output to the corresponding wheel through the first reduction mechanism 32. At this time, the synchronization mechanism 20 and the engine 10 are in a power coupling state. The power of the engine 10 is transmitted to the second power output end, and then output to the corresponding wheel through the second reduction mechanism 42.

[0044] 4. Range Extender Mode: The synchronous mechanism 20 is in a power disconnected state from the engine 10, the clutch 60 is engaged, and the power connection between the first drive module 30 and the second drive module 40 is disconnected. At this time, both the first motor 31 and the second motor 41 are working. The first motor 31 and the second motor 41 input power, which is output to their respective wheels through the first reduction mechanism 32 and the second reduction mechanism 42. At the same time, the power of the engine 10 drives the generator to work, realizing the power supply and power generation function.

[0045] 5. Escape Mode: When one wheel is suspended in the air or in a special situation with no power, the first drive module 30 and the second drive module 40 are connected for power. At this time, three escape methods can be selected: ① Single motor + engine 10 escape; ② Dual motor coupling drive escape; ③ Dual motor coupling + engine 10 drive escape.

[0046] In the single motor + engine 10 traction mode, either the first motor 31 or the second motor 41 works. If the first motor 31 works and the second motor 41 does not work, the power of the first motor 31 is output to the corresponding wheel through the first reduction mechanism 32. At this time, the synchronization mechanism 20 and the engine 10 are in a power coupling state. The power of the engine 10 is transmitted to the second power output end, and then output to the wheel corresponding to the first motor 31 through the second reduction mechanism 42, the coupling disconnection mechanism 50 and the first reduction mechanism 32 in sequence.

[0047] In the dual-motor coupled drive traction mode, both the first motor 31 and the second motor 41 are working. The power of the first motor 31 is output to the corresponding wheel through the first reduction mechanism 32, and the power of the second motor 41 is output to the wheel corresponding to the first motor 31 through the second reduction mechanism 42, the coupling disconnection mechanism 50 and the first reduction mechanism 32 in sequence.

[0048] In the dual-motor coupled drive traction mode, both the first motor 31 and the second motor 41 are working. The power of the first motor 31 is output to the corresponding wheel through the first reduction mechanism 32. The power of the second motor 41 is output to the wheel corresponding to the first motor 31 through the second reduction mechanism 42, the coupling disconnection mechanism 50 and the first reduction mechanism 32 in sequence. At this time, the synchronization mechanism 20 and the engine 10 are in a power coupling state. The power of the engine 10 is transmitted to the first power output end and then output to the wheel corresponding to the first motor 31 through the first reduction mechanism 32.

[0049] Reference Figure 1 As shown in the embodiment provided by this utility model, the first motor 31 and the second motor 41 are arranged in parallel, which can effectively utilize space, reduce the overall volume and length of the system, and make the system more compact. Furthermore, the first reduction mechanism 32 and the second reduction mechanism 42 are also symmetrically arranged. For example, the power of the first motor 31 is transmitted to the right wheel through the first reduction mechanism 32, and the power of the second motor 41 is transmitted to the left wheel through the second reduction mechanism 42, which can improve the symmetry of the system, help balance the weight distribution, and reduce vibration and noise.

[0050] In one feasible implementation, the synchronization mechanism 20 includes a first drive gear 21, a second drive gear 22, and a synchronizer 23, wherein:

[0051] Both the first drive gear 21 and the second drive gear 22 are loosely fitted on the first output shaft 11. Neither the first drive gear 21 nor the second drive gear 22 forms a power connection with the first output shaft 11, so that the synchronization mechanism 20 and the engine 10 are in a power disconnected state. When the first drive gear 21 and the second drive gear 22 do not need to transmit power, they will not generate additional load on the first output shaft 11, which simplifies the structure and control of the system.

[0052] Synchronizer 23 can move along a preset path. When synchronizer 23 is at the end of the preset path, the first drive gear 21 or the second drive gear 22 forms a power connection with the first output shaft 11, so that the synchronization mechanism 20 and the engine 10 are in a power coupling state. The power of the engine 10 can be transmitted to the first drive gear 21 or the second drive gear 22 through the first output shaft 11, thereby driving the subsequent transmission system.

[0053] The structure of synchronizer 23 can refer to the synchronizer or dual clutch structure in the prior art, which will not be described in detail here. By moving synchronizer 23, the power of engine 10 can be selectively transmitted to the first drive gear 21 or the second drive gear 22, thereby achieving flexible power distribution.

[0054] Reference Figure 1 As shown, the first reduction mechanism 32 includes a first planetary gear set 33 and a first parallel shaft transmission gear pair connected by transmission. The power input end of the first parallel shaft transmission gear pair is connected to the power output end of the first motor 31, which can realize efficient power transmission and reduction function.

[0055] In one feasible implementation, the first planetary gear set 33 is an NGW planetary gear set, the ring gear of the first planetary gear set 33 is fixedly set, the planet carrier of the first planetary gear set 33 can be connected to the right wheel drive, the first parallel shaft drive gear pair includes a first reduction drive shaft 321 and a first reduction drive gear 322 fixed on the first reduction drive shaft 321, and the first reduction drive shaft 321 is connected to the sun gear of the first planetary gear set 33 drive.

[0056] The first motor 31 or engine 10 provides power, which is transmitted to the first reduction drive shaft 321 through the first reduction gear 322. The first reduction drive shaft 321 transmits the power to the sun gear of the first planetary gear set 33. When the sun gear rotates, the planetary gears rotate in the gear ring, driving the planet carrier to rotate. The rotation of the planet carrier can be transmitted to the rear wheel drive, thereby driving the rear wheel.

[0057] Those skilled in the art will know that the arrangement order of the first planetary gear set 33 and the first parallel shaft transmission gear pair can be adjusted according to actual needs to achieve various matching methods. The number of reduction gears and the gear ratio in the first parallel shaft transmission gear pair can also be adjusted and matched according to actual needs to achieve the torque and speed transmission requirements of the system.

[0058] Furthermore, the power output end of the first motor 31 is connected to a first motor power output gear 311. The first drive gear 21, the first reduction gear 322, and the first motor power output gear 311 mesh sequentially to form a three-tooth structure, which flexibly adjusts the power transmission path to meet the needs of different working conditions. The power provided by the engine 10 can be transmitted to the right wheel through the first drive gear 21 to the first reduction gear 322, and the power provided by the first motor 31 can be transmitted to the right wheel through the first motor power output gear 311 to the first reduction gear 322. This combines the advantages of the engine 10 and the motor, improving power efficiency and flexibility.

[0059] Continue to refer to Figure 1 As shown, the second reduction mechanism 42 includes a second planetary gear set 43 and a second parallel shaft transmission gear pair connected by transmission. The power input end of the second parallel shaft transmission gear pair is connected to the power output end of the second motor 41, which can realize efficient power transmission and reduction function.

[0060] In one feasible implementation, the second planetary gear set 43 is an NGW planetary gear set, the ring gear of the second planetary gear set 43 is fixedly set, the planet carrier of the second planetary gear set 43 can be connected to the left wheel drive, the second parallel shaft drive gear pair includes a second reduction drive shaft 421 and a second reduction drive gear 422 fixed on the second reduction drive shaft 421, and the second reduction drive shaft 421 is connected to the sun gear of the second planetary gear set 43.

[0061] The second motor 41 or engine 10 provides power, which is transmitted to the second reduction drive shaft 421 through the second reduction gear 422. The second reduction drive shaft 421 transmits the power to the sun gear of the second planetary gear set 43. When the sun gear rotates, the planetary gears rotate in the gear ring, driving the planet carrier to rotate. The rotation of the planet carrier can be transmitted to the rear wheel drive, thereby driving the rear wheel.

[0062] Those skilled in the art will know that the arrangement sequence of the second planetary gear set 43 and the second parallel shaft transmission gear pair can be adjusted according to actual needs to achieve various matching methods. The number of reduction gears and the gear ratio in the second parallel shaft transmission gear pair can also be adjusted and matched according to actual needs to achieve the torque and speed transmission requirements of the system.

[0063] Furthermore, the power output end of the second motor 41 is connected to a second motor power output gear 411. The second drive gear 22, the second reduction gear 422, and the second motor power output gear 411 mesh sequentially to form a three-tooth structure, which flexibly adjusts the power transmission path to meet the needs of different working conditions. The power provided by the engine 10 can be transmitted to the left wheel through the second drive gear 22 to the second reduction gear 422, and the power provided by the second motor 41 can be transmitted to the left wheel through the second motor power output gear 411 to the second reduction gear 422. This combines the advantages of the engine 10 and the motor, improving power efficiency and flexibility.

[0064] In one feasible implementation, the coupling disconnection mechanism 50 is integrated on the first reduction drive shaft 321 and the second reduction drive shaft 421 respectively. This simplifies the overall structure of the system, reduces additional transmission components, and improves the reliability and maintenance convenience of the system. Through the integration of the coupling disconnection mechanism 50, the power connection or disconnection between the first drive module 30 and the second drive module 40 can be flexibly controlled, thereby realizing different drive modes. When needed, the power of the two drive modules can be combined to increase the total output power of the system; when not needed, the power of the two drive modules can be separated to reduce energy loss.

[0065] Based on the distributed drive system provided in the above embodiments, this utility model also provides a vehicle including the aforementioned distributed drive system. By integrating the engine 10 into the distributed drive system, the driving range is increased and range anxiety is reduced. When one motor fails during driving, the engine 10 can intervene to drive, ensuring driving safety. At the same time, the distributed drive system is also provided with a coupling disconnection mechanism 50. When the vehicle needs to get out of trouble, the coupling disconnection mechanism 50 can be used to make both motors work at the same time, or the engine 10 can participate in driving, further increasing the ability to get out of trouble.

[0066] The above description, based on the embodiments shown in the drawings, details the structure, features, and effects of this utility model. The above description is only a preferred embodiment of this utility model, but the scope of implementation of this utility model is not limited to what is shown in the drawings. Any changes made in accordance with the concept of this utility model, or modifications to equivalent embodiments, that do not exceed the spirit covered by the specification and drawings, shall be within the protection scope of this utility model.

Claims

1. A distributed drive system characterized by, include: engine; The synchronizing mechanism has a first power output end and a second power output end. The synchronizing mechanism and the engine can be in a power coupled state or a power disconnected state. When in the power coupled state, the power of the engine is transmitted to the first power output end or the second power output end. The first drive module includes a first motor and a first reduction mechanism. The power input end of the first reduction mechanism is connected to the first power output end of the synchronization mechanism and the power output end of the first motor, respectively. The second drive module includes a second motor and a second reduction mechanism. The power input end of the second reduction mechanism is connected to the second power output end of the synchronization mechanism and the power output end of the second motor, respectively. The coupling disconnection mechanism is used to establish or disconnect the power connection between the first drive module and the second drive module.

2. The distributed drive system of claim 1, wherein: The first motor and the second motor are arranged in parallel side by side.

3. The distributed drive system according to claim 1, characterized in that: The power output end of the engine is connected to a first output shaft; The synchronization mechanism includes a first drive gear, a second drive gear, and a synchronizer, wherein: Both the first drive gear and the second drive gear are loosely fitted on the first output shaft, so that the synchronization mechanism and the engine are in a power disconnected state; The synchronizer can move along a preset path. When the synchronizer is at the end of the preset path, the first drive gear or the second drive gear forms a power connection with the first output shaft, so that the synchronization mechanism and the engine are in a power coupling state.

4. The distributed drive system of claim 3, wherein: The first reduction mechanism includes a first planetary gear set and a first parallel shaft transmission gear pair connected by transmission. The power input end of the first parallel shaft transmission gear pair is connected to the power output end of the first motor.

5. The distributed drive system of claim 4, wherein: The first motor's power output end is connected to a first motor power output gear. The first parallel shaft transmission gear pair includes a first reduction transmission shaft and a first reduction transmission gear fixed on the first reduction transmission shaft. The first reduction transmission shaft is connected to the sun gear of the first planetary gear set. The first drive gear, the first reduction transmission gear, and the first motor power output gear mesh sequentially.

6. The distributed drive system of claim 5, wherein: The second reduction mechanism includes a second planetary gear set and a second parallel shaft transmission gear pair connected by transmission. The power input end of the second parallel shaft transmission gear pair is connected to the power output end of the second motor.

7. The distributed drive system of claim 6, wherein: The second motor's power output end is connected to a second motor power output gear. The second parallel shaft transmission gear pair includes a second reduction transmission shaft and a second reduction transmission gear fixed on the second reduction transmission shaft. The second reduction transmission shaft is connected to the sun gear of the second planetary gear set. The second drive gear, the second reduction transmission gear, and the second motor power output gear mesh in sequence.

8. The distributed drive system of claim 7, wherein: The coupling disconnection mechanism is integrated on the first reduction drive shaft and the second reduction drive shaft, respectively.

9. The distributed drive system of claim 3, wherein: It also includes a clutch and a generator, with the first output shaft connected to the inner hub of the clutch and the rotor of the generator connected to the outer hub of the clutch.

10. A vehicle characterized by comprising: Includes the distributed drive system as described in any one of claims 1-9.

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