Driving system and automobile

Abstract

The utility model belongs to the field of power transmission, and particularly relates to a driving system and an automobile, in the driving system, a first input shaft is used for connecting a first power source and a second power source, a second input shaft is used for connecting a third power source, and an intermediate shaft is arranged between the first input shaft and the second input shaft; the first transmission assembly and the second transmission assembly are both connected with the first input shaft and the intermediate shaft, and the third transmission assembly and the fourth transmission assembly are both connected with the second input shaft and the intermediate shaft. The controller is used for controlling the first gear switching assembly and the second gear switching assembly to selectively transmit power to the intermediate shaft through at least one of the first transmission assembly, the second transmission assembly, the third transmission assembly and the fourth transmission assembly so as to achieve multi-gear switching. In the embodiment of the invention, the driving system provides a wider speed ratio selection range, and different power sources can run in respective high-efficiency areas for a long time, so that the dynamic property and the economical efficiency of the whole vehicle are improved.

Description

TECHNICAL FIELD

[0001] The application belongs to the field of power transmission, and particularly relates to a driving system and a car. BACKGROUND

[0002] The power system of a hybrid electric vehicle mainly comprises three basic forms of series connection, parallel connection and series-parallel connection. In the series connection form, the engine and the output shaft are not mechanically connected, and optimal control of the rotation speed or torque can be realized, but all the energy needs to be converted between mechanical power and electric power twice before being transmitted to the output shaft, and the loss is large. The parallel connection has high transmission efficiency, but the engine and the output shaft are mechanically connected, and the engine cannot be ensured to be always in an optimal working area, and is usually used for medium and high speeds. The series-parallel connection couples the series connection and the parallel connection, and combines the advantages of the series connection and the parallel connection, and can realize optimal control of the engine and high-efficiency control at medium and high speeds.

[0003] At present, the series-parallel coupling power system is single-gear, and the entire power system only has a fixed speed ratio, and the vehicle cannot be always operated in an optimal mode. For example, the optimal mode at high speed should be the engine direct drive or parallel drive mode, and since the power system has only a single gear, the engine and the driving motor cannot be ensured to work in the high-efficiency area for a long time when the engine is directly driven or driven in parallel, so that the power performance and the economy of the vehicle are limited. CONTENT OF THE UTILITY MODEL

[0004] The application aims to provide a driving system and a car, so that different power sources are operated in respective high-efficiency areas, to improve the power performance and the economy of the vehicle.

[0005] In order to achieve the above-mentioned purpose, the application provides a driving system, comprising:

[0006] A first input shaft is used for connecting a first power source and a second power source;

[0007] A second input shaft is used for connecting a third power source;

[0008] An intermediate shaft is arranged between the first input shaft and the second input shaft, and is parallel to the first input shaft and the second input shaft;

[0009] A first transmission assembly is connected between the first input shaft and the intermediate shaft;

[0010] A second transmission assembly is connected between the first input shaft and the intermediate shaft;

[0011] A third transmission assembly is connected between the second input shaft and the intermediate shaft;

[0012] A fourth transmission assembly is connected between the second input shaft and the intermediate shaft;

[0013] a first gear shift assembly arranged on the intermediate shaft for selectively transmitting power of the first input shaft to the intermediate shaft through the first transmission assembly or the second transmission assembly;

[0014] a second gear shift assembly arranged on the second input shaft or the intermediate shaft for selectively transmitting power of the second input shaft to the intermediate shaft through the third transmission assembly or the fourth transmission assembly;

[0015] a controller for controlling at least one of the first power source, the second power source and the third power source to output power, and for controlling the first gear shift assembly and the second gear shift assembly to selectively transmit power to the intermediate shaft through at least one of the first transmission assembly, the second transmission assembly, the third transmission assembly and the fourth transmission assembly.

[0016] Optionally, the first gear shift assembly is a double clutch or a back-to-back clutch, and the second gear shift assembly is a synchronizer.

[0017] Optionally, the first transmission assembly comprises a first transmission shaft, a first transmission gear and a second transmission gear, the first transmission shaft is a hollow shaft, the first transmission shaft is sleeved on the intermediate shaft, the first transmission gear is sleeved on the first transmission shaft, the second transmission gear is sleeved on the first input shaft, the first transmission gear and the second transmission gear are engaged, and the first transmission shaft is connected with the intermediate shaft through the first gear shift assembly.

[0018] the second transmission assembly comprises a second transmission shaft, a third transmission gear and a fourth transmission gear, the second transmission shaft is a hollow shaft, the second transmission shaft is sleeved on the intermediate shaft, the third transmission gear is sleeved on the second transmission shaft, the fourth transmission gear is sleeved on the first input shaft, the third transmission gear and the fourth transmission gear are engaged, and the second transmission shaft is connected with the intermediate shaft through the first gear shift assembly.

[0019] Optionally, the second transmission shaft is located between the intermediate shaft and the first transmission shaft, the length of the second transmission shaft is greater than the length of the first transmission shaft, and the first transmission gear and the third transmission gear are located on the same side of the first gear shift assembly.

[0020] Optionally, the second gear shift assembly is arranged on the intermediate shaft.

[0021] The third transmission assembly comprises a first idler gear and a fifth transmission gear, the first idler gear is loosely sleeved on the intermediate shaft, the fifth transmission gear is arranged on the second input shaft, the first idler gear and the fifth transmission gear are engaged, and the first idler gear is connected with the intermediate shaft through the second gear shifting assembly.

[0022] The fourth transmission assembly comprises a second idler gear and a sixth transmission gear, the second idler gear is loosely sleeved on the intermediate shaft, the sixth transmission gear is arranged on the second input shaft, the second idler gear and the sixth transmission gear are engaged, and the second idler gear is connected with the intermediate shaft through the second gear shifting assembly.

[0023] Optionally, the second gear shifting assembly is arranged on the second input shaft.

[0024] The third transmission assembly comprises a first idler gear and a fifth transmission gear, the first idler gear is loosely sleeved on the second input shaft, the first idler gear is connected with the second input shaft through the second gear shifting assembly, the fifth transmission gear is arranged on the intermediate shaft, and the first idler gear and the fifth transmission gear are engaged.

[0025] The fourth transmission assembly comprises a second idler gear and a sixth transmission gear, the second idler gear is loosely sleeved on the second input shaft, the second idler gear is connected with the second input shaft through the second gear shifting assembly, the sixth transmission gear is arranged on the intermediate shaft, and the second idler gear and the sixth transmission gear are engaged.

[0026] Optionally, the first power source is an engine, the second power source and the third power source are motors, the second power source and the third power source are located on the same side of the driving system in the axial direction, and the first transmission assembly, the second transmission assembly, the third transmission assembly and the fourth transmission assembly are arranged between the first power source and the third power source.

[0027] Optionally, the driving system further comprises a fifth transmission assembly, the fifth transmission assembly comprises a seventh transmission gear and an eighth transmission gear, the seventh transmission gear is arranged on the first input shaft, the eighth transmission gear is arranged on a rotating shaft on which the second power source is arranged, and the seventh transmission gear and the eighth transmission gear are engaged.

[0028] Optionally, the drive system further comprises a sixth transmission assembly, the sixth transmission assembly comprising a ninth transmission gear, a tenth transmission gear, a differential and drive half shafts, the ninth transmission gear being arranged on the intermediate shaft, the tenth transmission gear being engaged with the ninth transmission gear, the differential connecting the two drive half shafts and the tenth transmission gear, the drive half shafts being configured to drive the wheels to rotate.

[0029] The application also provides an automobile, comprising:

[0030] a drive system;

[0031] wheels connected with the drive system.

[0032] The drive system and the automobile disclosed by the application have the following beneficial effects:

[0033] In the application, the drive system comprises a first input shaft, a second input shaft, an intermediate shaft, a first transmission assembly, a second transmission assembly, a third transmission assembly, a fourth transmission assembly, a first gear shifting assembly, a second gear shifting assembly and a controller, the first input shaft being configured to connect a first power source and a second power source, the second input shaft being configured to connect a third power source, the intermediate shaft being arranged between the first input shaft and the second input shaft, the first transmission assembly and the second transmission assembly both connecting the first input shaft and the intermediate shaft, the third transmission assembly and the fourth transmission assembly both connecting the second input shaft and the intermediate shaft, the controller being configured to control the first gear shifting assembly and the second gear shifting assembly to selectively transmit power to the intermediate shaft through at least one of the first transmission assembly, the second transmission assembly, the third transmission assembly and the fourth transmission assembly, so as to realize multi-gear shifting. In the embodiment, the drive system provides a wider range of speed ratio selection, and different power sources can run in their respective high-efficiency zones for a long time, thereby improving the power performance and the economy of the vehicle.

[0034] Other characteristics and advantages of the application will become apparent from the following detailed description, or will be learned by practice of the application.

[0035] It should be understood that the general description above and the following detailed description are only exemplary and explanatory, and cannot limit the present disclosure. BRIEF DESCRIPTION OF DRAWINGS

[0036] The drawings incorporated in the specification and constituting a part hereof illustrate embodiments consistent with the present application and together with the description serve to explain the principles of the application. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can be obtained by those skilled in the art without creative labor on the basis of these drawings.

[0037] Figure 1Fig. 1 is a structural schematic diagram of a drive system in Embodiment One of the present application.

[0038] Figure 2 Fig. 2 is a structural schematic diagram of a double clutch in Embodiment One of the present application.

[0039] Figure 3 Fig. 3 is a structural schematic diagram of another drive system in Embodiment Two of the present application.

[0040] Figure 4 Fig. 4 is a flow chart of a control method of a drive system in Embodiment Three of the present application.

[0041] Figure 5 Fig. 5 is a schematic diagram of an idle power generation mode of a drive system in Embodiment Three of the present application.

[0042] Figure 6 Fig. 6 is a schematic diagram of a pure electric first gear mode of a drive system in Embodiment Three of the present application.

[0043] Figure 7 Fig. 7 is a schematic diagram of a pure electric second gear mode of a drive system in Embodiment Three of the present application.

[0044] Figure 8 Fig. 8 is a schematic diagram of a series first gear mode of a drive system in Embodiment Three of the present application.

[0045] Figure 9 Fig. 9 is a schematic diagram of a series second gear mode of a drive system in Embodiment Three of the present application.

[0046] Figure 10 Fig. 10 is a schematic diagram of a direct drive first gear mode of a drive system in Embodiment Three of the present application.

[0047] Figure 11 Fig. 11 is a schematic diagram of a direct drive second gear mode of a drive system in Embodiment Three of the present application.

[0048] Figure 12 Fig. 12 is a schematic diagram of a parallel first gear mode of a drive system in Embodiment Three of the present application.

[0049] Figure 13 Fig. 13 is a schematic diagram of a parallel second gear mode of a drive system in Embodiment Three of the present application.

[0050] Figure 14 Fig. 14 is a schematic diagram of a parallel third gear mode of a drive system in Embodiment Three of the present application.

[0051] Figure 15 Fig. 15 is a schematic diagram of a parallel fourth gear mode of a drive system in Embodiment Three of the present application.

[0052] Figure 16 Fig. 16 is a structural schematic diagram of an automobile in Embodiment Four of the present application.

[0053] Legend of reference signs:

[0054] 10. Drive system;

[0055] 110. First input shaft; 120. Intermediate shaft; 130. Second input shaft;

[0056] 210. First transmission assembly; 211. First transmission shaft; 212. First transmission gear; 213. Second transmission gear;

[0057] 220. Second transmission assembly; 221. Second transmission shaft; 222. Third transmission gear; 223. Fourth transmission gear;

[0058] 230. Third transmission assembly; 231. First idler gear; 232. Fifth transmission gear;

[0059] 240. Fourth transmission assembly; 241. Second idler gear; 242. Sixth transmission gear;

[0060] 250. Fifth transmission assembly; 251. Seventh transmission gear; 252. Eighth transmission gear;

[0061] 260. Sixth transmission assembly; 261. Ninth transmission gear; 262. Tenth transmission gear; 263. Differential; 264. Drive half shaft;

[0062] 310. Dual clutch; 311. First clutch; 312. Second clutch; 313. Housing; 320. Synchronizer;

[0063] 400. Damper;

[0064] 20. Engine; 31. First electric machine; 32. Second electric machine; 40. Wheel. DETAILED DESCRIPTION

[0065] Example implementations will now be described more fully with reference to the accompanying drawings. Example implementations can be implemented in any

[0066] Moreover, described features, structures, or characteristics can be combined in any suitable manner in one or more embodiments. In the following description, numerous specific details are provided to give a thorough understanding of embodiments of the application. One skilled in the relevant art will recognize, however, that the

[0067] The present application will now be described in further detail with reference to the accompanying drawings and specific embodiments. It should be noted that the technical features involved in the various embodiments described below can be combined with each other as long as they do not conflict with each other. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain the present application, and should not be construed as limiting the present application.

[0068] Example 1

[0069] See Figure 1 and Figure 2 As shown, in this embodiment, the drive system 10 includes: a first input shaft 110, an intermediate shaft 120, a second input shaft 130, a first transmission component 210, a second transmission component 220, a third transmission component 230, a fourth transmission component 240, a first gear shifting component, a second gear shifting component, and a controller.

[0070] The first input shaft 110 is used to connect a first power source and a second power source, and the second input shaft 130 is used to connect a third power source. The first power source can be an engine 20, and both the second and third power sources are electric motors. The second power source can be a first motor 31, and the third power source can be a second motor 32. The first input shaft 110 has a first end and a second end opposite to each other. The first end of the first input shaft 110 is used to connect to the engine 20, and the second end of the first input shaft 110 is used to connect to the first motor 31. The first input shaft 110 and the first motor 31 can be directly or indirectly connected. The first motor 31 can generate electricity under the drive of the first input shaft 110. An intermediate shaft 120 is disposed between the first input shaft 110 and the second input shaft 130, and is parallel to both the first input shaft 110 and the second input shaft 130. The intermediate shaft 120 is used to connect directly or indirectly to the wheel 40.

[0071] A first transmission assembly 210 connects the first input shaft 110 and the intermediate shaft 120; a second transmission assembly 220 connects the first input shaft 110 and the intermediate shaft 120; a third transmission assembly 230 connects the second input shaft 130 and the intermediate shaft 120; and a fourth transmission assembly 240 connects the second input shaft 130 and the intermediate shaft 120. A first gear shifting assembly is disposed on the intermediate shaft 120 and is used to selectively transmit power from the first input shaft 110 to the intermediate shaft 120 via either the first transmission assembly 210 or the second transmission assembly 220. A second gear shifting assembly is disposed on either the second input shaft 130 or the intermediate shaft 120 and is used to selectively transmit power from the second input shaft 130 to the intermediate shaft 120 via either the third transmission assembly 230 or the fourth transmission assembly 240.

[0072] The controller is configured to control at least one of the first power source, the second power source and the third power source to output power, and to control the first gear shifting assembly and the second gear shifting assembly to selectively transmit the power to the intermediate shaft 120 through at least one of the first transmission assembly 210, the second transmission assembly 220, the third transmission assembly 230 and the fourth transmission assembly 240.

[0073] It should be noted that the transmission ratios of the first transmission assembly 210 and the second transmission assembly 220 are different, and the transmission ratios of the third transmission assembly 230 and the fourth transmission assembly 240 are different. The first gear shifting assembly can be in driving connection with the first input shaft 110 through one of the first transmission assembly 210 and the second transmission assembly 220, or in loose connection with the first input shaft 110, i.e., neither the first transmission assembly 210 nor the second transmission assembly 220 is in driving connection.

[0074] The second gear shifting assembly can be in driving connection with the second input shaft 130 through one of the third transmission assembly 230 and the fourth transmission assembly 240, or in loose connection with the second input shaft 130, i.e., neither the third transmission assembly 230 nor the fourth transmission assembly 240 is in driving connection.

[0075] In the embodiment, the drive system 10 includes the first input shaft 110, the second input shaft 130, the intermediate shaft 120, the first transmission assembly 210, the second transmission assembly 220, the third transmission assembly 230, the fourth transmission assembly 240, the first gear shifting assembly, the second gear shifting assembly and the controller. The first input shaft 110 is configured to be connected with the first power source and the second power source, the second input shaft 130 is configured to be connected with the third power source, the intermediate shaft 120 is arranged between the first input shaft 110 and the second input shaft 130, the first transmission assembly 210 and the second transmission assembly 220 are both connected with the first input shaft 110 and the intermediate shaft 120, the third transmission assembly 230 and the fourth transmission assembly 240 are both connected with the second input shaft 130 and the intermediate shaft 120, and the controller is configured to control the first gear shifting assembly and the second gear shifting assembly to selectively transmit the power to the intermediate shaft 120 through at least one of the first transmission assembly 210, the second transmission assembly 220, the third transmission assembly 230 and the fourth transmission assembly 240, so as to realize multi-gear shifting. In the embodiment, the drive system 10 provides a wider range of speed ratio selection, and the engine 20 and the motor can operate in the high-efficiency region for a long time, thereby improving the power performance and the fuel economy of the vehicle.

[0076] In some embodiments, the first gear shifting assembly is a dual clutch 310 or back-to-back clutch, and the second gear shifting assembly is a synchronizer 320. For example, the first gear shifting assembly is a dual clutch 310, which includes a first clutch 311, a second clutch 312, and a housing 313, the housing 313 is mounted on the first input shaft 110, the first clutch 311 and the second clutch 312 are arranged in the housing 313, the first clutch 311 connects the housing 313 and the first transmission assembly 210, and the first clutch 311 can combine and separate the housing 313 and the first transmission assembly 210, the second clutch 312 connects the housing 313 and the second transmission assembly 220, and the second clutch 312 can combine and separate the housing 313 and the second transmission assembly 220.

[0077] Through the dual clutch 310 or back-to-back clutch, the first input shaft 110 can output power through one of the first transmission assembly 210 and the second transmission assembly 220 or none of them. When neither the first transmission assembly 210 nor the second transmission assembly 220 transmits power, the first input shaft 110 and the intermediate shaft 120 can be decoupled, the second motor 32 can output power through the second input shaft 130, that is, the second motor 32 can be directly driven and the engine 20 can be idling.

[0078] Through the synchronizer 320, one of the third transmission assembly 230 and the fourth transmission assembly 240 can output power or none of them. When neither the third transmission assembly 230 nor the fourth transmission assembly 240 transmits power, the second input shaft 130 and the intermediate shaft 120 can be decoupled, and the engine can be directly driven.

[0079] In some embodiments, the first transmission assembly 210 includes a first transmission shaft 211, a first transmission gear 212, and a second transmission gear 213, the first transmission shaft 211 is a hollow shaft, the first transmission shaft 211 is sleeved on the intermediate shaft 120, the first transmission gear 212 is sleeved on the first transmission shaft 211, and the second transmission gear 213 is sleeved on the first input shaft 110. The first transmission gear 212 and the second transmission gear 213 are engaged, and the first transmission shaft 211 is connected with the intermediate shaft 120 through the first gear shifting assembly.

[0080] The second transmission assembly 220 includes a second transmission shaft 221, a third transmission gear 222, and a fourth transmission gear 223, the second transmission shaft 221 is a hollow shaft, the second transmission shaft 221 is sleeved on the intermediate shaft 120, the third transmission gear 222 is sleeved on the second transmission shaft 221, and the fourth transmission gear 223 is sleeved on the first input shaft 110. The third transmission gear 222 and the fourth transmission gear 223 are engaged, and the second transmission shaft 221 is connected with the intermediate shaft 120 through the first gear shifting assembly.

[0081] The first transmission assembly 210 and the second transmission assembly 220 connect the first input shaft 110 and the intermediate shaft 120, which can not only reduce the rotation speed of the first input shaft 110 and improve the torque output by the first input shaft 110, but also make the combination and separation of the synchronizer 320 with the third transmission assembly 230 and the fourth transmission assembly 240 more smooth.

[0082] In some embodiments, the second transmission shaft 221 is located between the intermediate shaft 120 and the first transmission shaft 211, that is, the second transmission shaft 221 is sleeved on the intermediate shaft 120, and the first transmission shaft 211 is sleeved on the second transmission shaft 221. The length of the second transmission shaft 221 is greater than the length of the first transmission shaft 211, and the first transmission gear 212 and the third transmission gear 222 are located on the same side of the first gear shifting assembly.

[0083] The first transmission gear 212 and the third transmission gear 222 are located on the same side of the first gear shifting assembly, which can make the structure of the drive system 10 more compact and reduce the design space occupied by the automobile.

[0084] It should be noted that the first transmission gear 212 and the third transmission gear 222 can be located on the same side of the first gear shifting assembly, but are not limited thereto. The first transmission gear 212 and the third transmission gear 222 can also be located on the two sides of the first gear shifting assembly, respectively, which can be determined according to the specific situation.

[0085] In some embodiments, the second gear shifting assembly is provided on the intermediate shaft 120, and the second gear shifting assembly is the synchronizer 320. The third transmission assembly 230 includes a first idler gear 231 and a fifth transmission gear 232. The first idler gear 231 is sleeved on the intermediate shaft 120, and the fifth transmission gear 232 is provided on the second input shaft 130. The first idler gear 231 and the fifth transmission gear 232 are engaged, and the first idler gear 231 is connected with the intermediate shaft 120 through the second gear shifting assembly.

[0086] The fourth transmission assembly 240 includes a second idler gear 241 and a sixth transmission gear 242. The second idler gear 241 is sleeved on the intermediate shaft 120, and the sixth transmission gear 242 is provided on the second input shaft 130. The second idler gear 241 and the sixth transmission gear 242 are engaged, and the second idler gear 241 is connected with the intermediate shaft 120 through the second gear shifting assembly.

[0087] The second motor 32 and the intermediate shaft 120 are connected through the third transmission assembly 230 and the fourth transmission assembly 240, which can reduce the rotation speed of the second motor 32 and improve the torque output by the second motor 32.

[0088] In some embodiments, the drive system 10 further comprises a damper 400, which is arranged on the first input shaft 110 and located between the first power source and the first gear shift assembly. The damper 400 can comprise a torsional damper and a dual mass flywheel.

[0089] The damper 400 is arranged on the first input shaft 110, and the torsional vibration of the first input shaft 110 can be inhibited through the damper 400, so as to avoid the first input shaft 110 from shaking or even breaking at high speed.

[0090] In some embodiments, the first power source is located on one side of the axial direction of the drive system 10, and the second power source and the third power source are located on the same side of the axial direction of the drive system 10. The axial direction of the drive system 10 is the axial direction of the first input shaft 110, the second input shaft 130 and the intermediate shaft 120. The first transmission assembly 210, the second transmission assembly 220, the third transmission assembly 230 and the fourth transmission assembly 240 are arranged between the first power source and the third power source.

[0091] The first power source can be the engine 20, and the second power source and the third power source can be motors. The first power source and the second power source are located on two sides of the axial direction of the drive system 10, and the second power source and the third power source are located on the same side of the axial direction of the drive system 10, which can reduce the design difficulty of oil supply of the engine 20 and power supply of the motor.

[0092] In some embodiments, the drive system 10 further comprises a fifth transmission assembly 250, which comprises a seventh transmission gear 251 and an eighth transmission gear 252. The seventh transmission gear 251 is arranged on the first input shaft 110, and the eighth transmission gear 252 is arranged on the rotating shaft of the second power source, which is the first motor 31. The eighth transmission gear 252 is arranged on the output shaft of the first motor 31. The seventh transmission gear 251 and the eighth transmission gear 252 are engaged.

[0093] The first input shaft 110 and the first motor 31 are connected through the fifth transmission assembly 250, and the fifth transmission assembly 250 can reduce the rotation speed output by the first input shaft 110 and increase the torque output by the first input shaft 110.

[0094] In some embodiments, the drive system 10 further comprises a sixth transmission assembly 260, which comprises a ninth transmission gear 261, a tenth transmission gear 262, a differential 263 and drive half shafts 264. The ninth transmission gear 261 is arranged on the intermediate shaft 120, and the tenth transmission gear 262 is engaged with the ninth transmission gear 261. The differential 263 is connected to the tenth transmission gear 262 and the two drive half shafts 264, and the drive half shafts 264 are used to drive the wheels 40 to rotate.

[0095] The intermediate shaft 120 and the wheels 40 are connected through a sixth transmission assembly 260, which can reduce the rotation speed of the intermediate shaft 120 output and increase the torque of the intermediate shaft 120 output. The sixth transmission assembly 260 includes a differential 263, which can automatically adjust the rotation speed of the left and right wheels 40 according to factors such as the radius of the vehicle turning and the vehicle speed, so that the inner side wheel 40 rotates slowly and the outer side wheel 40 rotates quickly, so that the wheels 40 maintain a pure rolling state during turning, avoid sliding friction of the wheels 40, and improve the handling performance and driving stability of the vehicle.

[0096] Embodiment Two

[0097] The main difference between Embodiment Two and Embodiment One is that the installation position of the second gear shifting assembly is different. Referring to FIG. 2, in Embodiment Two, the second gear shifting assembly is arranged on the second input shaft 130. Figure 3

[0098] The third transmission assembly 230 includes a first idle gear 231, which is sleeved on the second input shaft 130, and the first idle gear 231 is connected with the second input shaft 130 through the second gear shifting assembly. The third transmission assembly 230 further includes a fifth transmission gear 232, which is arranged on the intermediate shaft 120, and the first idle gear 231 and the fifth transmission gear 232 are engaged.

[0099] The fourth transmission assembly 240 includes a second idle gear 241, which is sleeved on the second input shaft 130, and the second idle gear 241 and the first idle gear 231 are respectively located on both sides of the second gear shifting assembly, and the second idle gear 241 is connected with the second input shaft 130 through the second gear shifting assembly. The fourth transmission assembly 240 further includes a sixth transmission gear 242, which is arranged on the intermediate shaft 120, and the second idle gear 241 and the sixth transmission gear 242 are engaged. The second gear shifting assembly includes a synchronizer 320.

[0100] The fifth transmission gear 232 and the sixth transmission gear 242 are arranged on the intermediate shaft 120, and the synchronizer 320, the first idle gear 231 and the second idle gear 241 are arranged on the second input shaft 130, and the length of the intermediate shaft 120 can be reduced, and the structure of the drive system 10 is more compact.

[0101] Embodiment Three

[0102] The application also provides a control method of the drive system 10, which is used to control the drive system 10 disclosed above. Referring to FIG. 6, the control method of the drive system 10 includes the following steps. Figure 4

[0103] ​​S100: Obtain vehicle operating status parameters, which include at least one of the following: battery charge value, throttle opening value, vehicle speed value, and brake pedal depth value.

[0104] S200: Determine the operating mode of the drive system 10 based on the operating status parameters;

[0105] S300: According to the working mode, control the output power of at least one of the first power source, the second power source, and the third power source, and control the first gear shifting component and the second gear shifting component to selectively transmit power to the intermediate shaft 120 through at least one of the first transmission component 210, the second transmission component 220, the third transmission component 230, and the fourth transmission component 240.

[0106] For example, the operating modes of the drive system 10 may include idle speed power generation mode, pure electric first gear mode, pure electric second gear mode, series first gear mode, series second gear mode, engine direct drive first gear mode, engine direct drive second gear mode, parallel first gear mode, parallel second gear mode, parallel third gear mode, parallel fourth gear mode, and brake energy recovery mode.

[0107] The operating mode of the drive system 10 is determined based on the operating status parameters. For example, if the throttle opening value is 0, the vehicle speed value is 0, and the battery charge value is less than the set value, the operating mode of the drive system 10 can be determined as idle power generation mode. Based on the battery charge value, vehicle speed value, and brake pedal depth value, the operating mode of the drive system 10 can be determined as one of the following: pure electric first gear mode, pure electric second gear mode, series first gear mode, series second gear mode, engine direct drive first gear mode, engine direct drive second gear mode, parallel first gear mode, parallel second gear mode, parallel third gear mode, or parallel fourth gear mode. When the brake pedal is engaged in pure electric first gear mode, pure electric second gear mode, series first gear mode, series second gear mode, engine direct drive first gear mode, engine direct drive second gear mode, parallel first gear mode, parallel second gear mode, parallel third gear mode, or parallel fourth gear mode, the operating mode of the drive system 10 can be determined as brake energy recovery mode.

[0108] Table 1. Status of Dual Clutch and Synchronizer under Different Operating Modes

[0109] Operating mode Engine First electric machine Second electric machine First clutch Second clutch Synchronizer Idle generation Work Generation Not work Separation Separation Separation Pure electric first gear Not work Not work Drive Separation Separation In combination with the first idler gear Pure electric first gear Not work Not work Drive Separation Separation In combination with the second idler gear Series first gear Work Generation Drive Separation Separation In combination with the first idler gear Series second gear Work Generation Drive Separation Separation In combination with the first idler gear Direct drive first gear Work Generation / follow Not work In combination Separation Separation Direct drive second gear Work Generation / follow Not work Separation In combination Separation Parallel first gear Work Generation / follow Drive In combination Separation In combination with the first idler gear Parallel second gear Work Generation / follow Drive In combination Separation In combination with the second idler gear Parallel third gear Work Generation / follow Drive Separation In combination In combination with the first idler gear Parallel fourth gear Work Generation / follow Drive Separation In combination In combination with the second idler gear Energy recovery / Generation Generation / / /

[0110] In idle power generation mode, the power transmission route of drive system 10 is as follows: Figure 5 As indicated by the arrow. Combined Figure 5As shown in Table 1, in the idle generation mode, the first clutch 311, the second clutch 312 and the synchronizer 320 are all separated. The second motor 32 is not working, the engine 20 works to drive the first input shaft 110 to rotate, and the power of the first input shaft 110 drives the first motor 31 to generate electricity in sequence through the seventh transmission gear 251 and the eighth transmission gear 252, so as to charge the power battery.

[0111] In the single-motor pure electric first gear mode, the power transmission route of the drive system 10 is as shown by arrows. Figure 6 In combination with Figure 6 As shown in Table 1, in the single-motor pure electric first gear mode, the first clutch 311 and the second clutch 312 are both separated, and the synchronizer 320 is combined with the first idling gear 231. The engine 20 and the first motor 31 are both not working, and the second motor 32 drives the wheels 40 in sequence through the second input shaft 130, the fifth transmission gear 232, the first idling gear 231, the intermediate shaft 120, the ninth transmission gear 261, the tenth transmission gear 262, the differential 263 and the drive half shaft 264.

[0112] In the single-motor pure electric second gear mode, the power transmission route of the drive system 10 is as shown by arrows. Figure 7 In combination with Figure 7 As shown in Table 1, in the single-motor pure electric second gear mode, the first clutch 311 and the second clutch 312 are both separated, and the synchronizer 320 is combined with the second idling gear 241. The engine 20 and the first motor 31 are both not working, and the second motor 32 drives the wheels 40 in sequence through the second input shaft 130, the sixth transmission gear 242, the second idling gear 241, the intermediate shaft 120, the ninth transmission gear 261, the tenth transmission gear 262, the differential 263 and the drive half shaft 264.

[0113] In the series first gear mode, the power transmission route of the drive system 10 is as shown by arrows. Figure 8 In combination with Figure 8 As shown in Table 1, in the series first gear mode, the first clutch 311 and the second clutch 312 are both separated, and the synchronizer 320 is combined with the first idling gear 231. The first motor 31 starts the engine 20, and after starting, the engine 20 works to drive the first input shaft 110 to rotate, and the power of the first input shaft 110 drives the first motor 31 to generate electricity in sequence through the seventh transmission gear 251 and the eighth transmission gear 252, so as to provide power for the second motor 32, and the remaining energy is used for charging the power battery. The second motor 32 drives the wheels 40 in sequence through the second input shaft 130, the fifth transmission gear 232, the first idling gear 231, the intermediate shaft 120, the ninth transmission gear 261, the tenth transmission gear 262, the differential 263 and the drive half shaft 264.

[0114] In the series second gear mode, the power transmission route of the drive system 10 is as shown by arrows.Figure 9 Arrow shown. Combined Figure 9 And Table 1, in the first clutch 311, second clutch 312 are separated, the synchronizer 320 and the second idler gear 241 combined in series first gear mode. First motor 31 start engine 20, start engine 20 work after the first input shaft 110 rotation, the first input shaft 110 power through the 7th gear 251, 8th gear 252 drive first motor 31 power generation, as the second motor 32 power supply, the remaining energy for power battery charging. The second motor 32 through the second input shaft 130, 6th gear 242, second idler gear 241, intermediate shaft 120, 9th gear 261, 10th gear 262, differential 263, drive axle 264 drive wheels 40.

[0115] Drive system 10 in engine direct drive first gear mode, power transmission route as Figure 10 Arrow shown. Combined Figure 10 And Table 1, in the first clutch 311, second clutch 312 are separated, the synchronizer 320 and the second idler gear 241 combined in series first gear mode. First motor 31 start engine 20, start engine 20 work after the first input shaft 110 rotation, the first input shaft 110 power through the 7th gear 251, 8th gear 252 drive first motor 31 power generation, as the second motor 32 power supply, the remaining energy for power battery charging. The second motor 32 through the second input shaft 130, 6th gear 242, second idler gear 241, intermediate shaft 120, 9th gear 261, 10th gear 262, differential 263, drive axle 264 drive wheels 40.

[0116] Drive system 10 in engine direct drive second gear mode, power transmission route as Figure 11 Arrow shown. Combined Figure 11As shown in Table 1, in the engine direct drive second gear mode, the first clutch 311 is separated, the second clutch 312 is engaged, and the synchronizer 320 is separated. The second motor 32 is not working, and the engine 20 is used to drive the wheels 40 entirely or to drive the wheels 40 partially and to drive the first motor 31 to generate electricity partially, depending on the specific situation. When the engine 20 is used to drive, the first input shaft 110 drives the wheels 40 in sequence through the fourth transmission gear 223, the third transmission gear 222, the second clutch 312, the second transmission shaft 221, the intermediate shaft 120, the ninth transmission gear 261, the tenth transmission gear 262, the differential 263, and the drive half shaft 264. When the engine 20 is used to generate electricity, the first input shaft 110 drives the first motor 31 to generate electricity in sequence through the seventh transmission gear 251 and the eighth transmission gear 252, so as to charge the power battery.

[0117] In the parallel first gear mode, the power transmission route of the drive system 10 is as shown by the arrows. In combination Figure 12 Figure 12 As shown in Table 1, in the parallel first gear mode, the first clutch 311 is engaged, the second clutch 312 is separated, and the synchronizer 320 is engaged with the first idler gear 231. The engine 20 is used to drive the wheels 40 entirely or to drive the wheels 40 partially and to drive the first motor 31 to generate electricity partially, depending on the specific situation. When the engine 20 is used to generate electricity, the first input shaft 110 drives the first motor 31 to generate electricity in sequence through the seventh transmission gear 251 and the eighth transmission gear 252, so as to charge the power battery.

[0118] When the engine 20 is used to drive, the first input shaft 110 drives the wheels 40 in sequence through the second transmission gear 213, the first transmission gear 212, the first clutch 311, the first transmission shaft 211, the intermediate shaft 120, the ninth transmission gear 261, the tenth transmission gear 262, the differential 263, and the drive half shaft 264. At the same time, the second motor 32 drives the wheels 40 in sequence through the second input shaft 130, the fifth transmission gear 232, the first idler gear 231, the intermediate shaft 120, the ninth transmission gear 261, the tenth transmission gear 262, the differential 263, and the drive half shaft 264.

[0119] In the parallel second gear mode, the power transmission route of the drive system 10 is as shown by the arrows. In combination Figure 13 Figure 13 ​​As shown in Table 1, in parallel first gear mode, the first clutch 311 engages, the second clutch 312 disengages, and the synchronizer 320 engages with the second idler gear 241. All the power from the engine 20 is used to drive the wheels 40, or part of the power is used to drive the wheels 40 and part of the power is used to drive the first motor 31 to generate electricity, depending on the situation. When the engine 20 is used to generate electricity, the power from the first input shaft 110 sequentially drives the first motor 31 to generate electricity through the 7th transmission gear 251 and the 8th transmission gear 252, thereby charging the power battery.

[0120] When the engine 20 is used for driving, the first input shaft 110 drives the wheels 40 sequentially through the second transmission gear 213, the first transmission gear 212, the first clutch 311, the first drive shaft 211, the intermediate shaft 120, the ninth transmission gear 261, the tenth transmission gear 262, the differential 263, and the drive half-shaft 264. Simultaneously, the second motor 32 drives the wheels 40 sequentially through the second input shaft 130, the sixth transmission gear 242, the second idler gear 241, the intermediate shaft 120, the ninth transmission gear 261, the tenth transmission gear 262, the differential 263, and the drive half-shaft 264.

[0121] In parallel third-gear mode, the power transmission route of drive system 10 is as follows: Figure 14 As indicated by the arrow. Combined Figure 14 As shown in Table 1, in parallel three-speed mode, the first clutch 311 disengages, the second clutch 312 engages, and the synchronizer 320 engages with the first idler gear 231. All the power from the engine 20 is used to drive the wheels 40, or part of the power is used to drive the wheels 40 and part of the power is used to drive the first motor 31 to generate electricity, depending on the situation. When the engine 20 is used to generate electricity, the power from the first input shaft 110 sequentially drives the first motor 31 to generate electricity through the 7th transmission gear 251 and the 8th transmission gear 252, thus charging the power battery.

[0122] When the engine 20 is used for driving, the first input shaft 110 drives the wheels 40 sequentially through the fourth transmission gear 223, the third transmission gear 222, the second clutch 312, the second transmission shaft 221, the intermediate shaft 120, the ninth transmission gear 261, the tenth transmission gear 262, the differential 263, and the drive half-shaft 264. Simultaneously, the second motor 32 drives the wheels 40 sequentially through the second input shaft 130, the fifth transmission gear 232, the first idler gear 231, the intermediate shaft 120, the ninth transmission gear 261, the tenth transmission gear 262, the differential 263, and the drive half-shaft 264.

[0123] In parallel fourth gear mode, the power transmission route of drive system 10 is as follows: Figure 15 As indicated by the arrow. Combined Figure 15As shown in Table 1, in the parallel fourth gear mode, the first clutch 311 is engaged, the second clutch 312 is disengaged, and the synchronizer 320 is engaged with the second idler gear 241. The engine 20 can be used to drive the wheels 40 entirely or to drive the wheels 40 partially and to drive the first motor 31 to generate electricity, depending on the specific situation. When the engine 20 is used to generate electricity, the first input shaft 110 drives the first motor 31 to generate electricity in sequence through the seventh transmission gear 251 and the eighth transmission gear 252, so as to charge the power battery.

[0124] When the engine 20 is used to drive, the first input shaft 110 drives the wheels 40 in sequence through the fourth transmission gear 223, the third transmission gear 222, the second clutch 312, the second transmission shaft 221, the intermediate shaft 120, the ninth transmission gear 261, the tenth transmission gear 262, the differential 263, and the drive half shaft 264. At the same time, the second motor 32 drives the wheels 40 in sequence through the second input shaft 130, the sixth transmission gear 242, the second idler gear 241, the intermediate shaft 120, the ninth transmission gear 261, the tenth transmission gear 262, the differential 263, and the drive half shaft 264.

[0125] In addition, the drive system 10 further includes a brake energy recovery mode. When the brake pedal is braked in the pure electric first gear mode, the pure electric second gear mode, the series first gear mode, the series second gear mode, the engine direct drive first gear mode, the engine direct drive second gear mode, the parallel first gear mode, the parallel second gear mode, the parallel third gear mode, or the parallel fourth gear mode, power is reversely transmitted from the wheels 40 to the first motor 31 and / or the second motor 32, the first motor 31 and / or the second motor 32 generates electricity and charges the power battery.

[0126] By controlling the double clutch 310, one of the first transmission assembly 210 and the second transmission assembly 220 can be in transmission connection with the intermediate shaft 120. By controlling the synchronizer 320, one of the first idler gear 231 and the second idler gear 241 can be in transmission connection with the intermediate shaft 120. By controlling the double clutch 310 and the synchronizer 320, four gear switching can be achieved to provide a wider range of speed ratio selection. The engine 20 and the motor can be operated in the high-efficiency zone for a long time, thereby improving the power performance and the economy of the vehicle.

[0127] Embodiment Four

[0128] The application also provides an automobile, as shown in Figure 16 The automobile includes the drive system 10.

[0129] The automobile further comprises an engine 20, a first motor 31, a second motor 32, wheels 40, a power battery, and the like. The engine 20 is connected with the first input shaft 110, the first motor 31 is connected with the first input shaft 110 through the fifth transmission assembly 250, the second motor 32 is connected with the second input shaft 130, and the wheels 40 are installed on the drive half shaft 264.

[0130] The automobile comprises a drive system 10, in which the first input shaft 110 is used for connecting a first power source and a second power source, the second input shaft 130 is used for connecting a third power source, the intermediate shaft 120 is arranged between the first input shaft 110 and the second input shaft 130, the first transmission assembly 210 and the second transmission assembly 220 are both connected with the first input shaft 110 and the intermediate shaft 120, the third transmission assembly 230 and the fourth transmission assembly 240 are both connected with the second input shaft 130 and the intermediate shaft 120, and a controller is used for controlling the first gear shift assembly and the second gear shift assembly to selectively transmit power to the intermediate shaft 120 through at least one of the first transmission assembly 210, the second transmission assembly 220, the third transmission assembly 230 and the fourth transmission assembly 240, so as to realize multi-gear shift. In the embodiment, the drive system 10 provides a wider range of speed ratio selection, and the engine 20 and the motor can be operated in the high-efficiency zone for a long time, thereby improving the power performance and the economy of the automobile.

[0131] The terms "first", "second", and the like are used only for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the technical features indicated. Therefore, the features defined with "first", "second", and the like can explicitly or implicitly include one or more of the features. In the description of the present application, the meaning of "multiple" is two or more, unless otherwise specifically limited.

[0132] In the present application, unless otherwise specifically defined and limited, the terms "assembly", "connection", and the like should be understood in a broad sense, for example, can be fixed connection, or detachable connection, or integral; can be mechanical connection, or electrical connection; can be directly connected, or indirectly connected through an intermediate medium; can be the internal communication of two elements or the interaction relationship between 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.

[0133] In the description of the specification, the description of the terms "some embodiments", "exemplarily" and the like means that the specific features, structures, materials or characteristics described in connection with the embodiments or examples are contained in at least one embodiment or example of the present application. In the specification, the illustrative description of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any appropriate manner in any one or more embodiments or examples. In addition, the person skilled in the art can combine and combine the different embodiments or examples described in the specification and the features of the different embodiments or examples without contradiction.

[0134] Although the embodiments of the present application have been shown and described above, it is understood that the above embodiments are exemplary and cannot be construed as limiting the present application, and those skilled in the art can make changes, modifications, replacements and variations to the above embodiments within the scope of the present application. Any changes or modifications made in accordance with the claims and specification of the present application shall be within the scope of the present application.

Claims

1. A drive system characterized by, The utility model relates to a kind of transmission device, including: First input shaft, for connecting first power source and second power source; Second input shaft, for connecting third power source; Intermediate shaft, disposed between the first input shaft and the second input shaft, and parallel to the first input shaft, the second input shaft; First transmission assembly, connecting the first input shaft and the intermediate shaft; Second transmission assembly, connecting the first input shaft and the intermediate shaft; Third transmission assembly, connecting the second input shaft and the intermediate shaft; Fourth transmission assembly, connecting the second input shaft and the intermediate shaft; First gear shift assembly, disposed in the intermediate shaft, for selectively transmitting power of the first input shaft to the intermediate shaft through the first transmission assembly or the second transmission assembly; Second gear shift assembly, disposed in the second input shaft or the intermediate shaft, for selectively transmitting power of the second input shaft to the intermediate shaft through the third transmission assembly or the fourth transmission assembly; Controller, for controlling at least one output power of the first power source, the second power source, the third power source, and controlling the first gear shift assembly, the second gear shift assembly to selectively transmit power to the intermediate shaft through at least one of the first transmission assembly, the second transmission assembly, the third transmission assembly, the fourth transmission assembly.

2. The drive system of claim 1, wherein, The first gear shift assembly is a double clutch or a back-to-back clutch, and the second gear shift assembly is a synchronizer.

3. The drive system of claim 1, wherein, The first transmission assembly includes a first transmission shaft, a first transmission gear and a second transmission gear, the first transmission shaft is a hollow shaft, the first transmission shaft is sleeved on the intermediate shaft, the first transmission gear is sleeved on the first transmission shaft, the second transmission gear is sleeved on the first input shaft, the first transmission gear and the second transmission gear are engaged, and the first transmission shaft is connected with the intermediate shaft through the first gear shift assembly. The second transmission assembly includes a second transmission shaft, a third transmission gear and a fourth transmission gear, the second transmission shaft is a hollow shaft, the second transmission shaft is sleeved on the intermediate shaft, the third transmission gear is sleeved on the second transmission shaft, the fourth transmission gear is sleeved on the first input shaft, the third transmission gear and the fourth transmission gear are engaged, and the second transmission shaft is connected with the intermediate shaft through the first gear shift assembly.

4. The drive system of claim 3, wherein, The second transmission shaft is located between the intermediate shaft and the first transmission shaft, the length of the second transmission shaft is greater than the length of the first transmission shaft, and the first transmission gear and the third transmission gear are located on the same side of the first gear shift assembly.

5. The drive system of claim 1, wherein, The second gear shift assembly is disposed in the intermediate shaft. The third transmission assembly includes a first idler gear and a fifth transmission gear, the first idler gear is hollowly sleeved on the intermediate shaft, the fifth transmission gear is disposed on the second input shaft, the first idler gear and the fifth transmission gear are engaged, and the first idler gear is connected with the intermediate shaft through the second gear shift assembly. The fourth transmission assembly comprises a second idle gear and a sixth transmission gear, the second idle gear is loosely sleeved on the intermediate shaft, the sixth transmission gear is arranged on the second input shaft, the second idle gear and the sixth transmission gear are engaged, and the second idle gear is connected with the intermediate shaft through the second gear shifting assembly.

6. The drive system of claim 1, wherein, The second gear shifting assembly is arranged on the second input shaft. The third transmission assembly comprises a first idle gear and a fifth transmission gear, the first idle gear is loosely sleeved on the second input shaft, the first idle gear is connected with the second input shaft through the second gear shifting assembly, the fifth transmission gear is arranged on the intermediate shaft, and the first idle gear and the fifth transmission gear are engaged. The fourth transmission assembly comprises a second idle gear and a sixth transmission gear, the second idle gear is loosely sleeved on the second input shaft, the second idle gear is connected with the second input shaft through the second gear shifting assembly, the sixth transmission gear is arranged on the intermediate shaft, and the second idle gear and the sixth transmission gear are engaged.

7. The drive system of claim 1, wherein, The first power source is an engine, the second power source and the third power source are motors, the second power source and the third power source are located on the same side of the driving system in the axial direction, and the first transmission assembly, the second transmission assembly, the third transmission assembly and the fourth transmission assembly are arranged between the first power source and the third power source.

8. The drive system of claim 1 or 7, wherein The driving system further comprises a fifth transmission assembly, the fifth transmission assembly comprises a seventh transmission gear and an eighth transmission gear, the seventh transmission gear is arranged on the first input shaft, the eighth transmission gear is arranged on a rotating shaft on which the second power source is arranged, and the seventh transmission gear and the eighth transmission gear are engaged.

9. The drive system of claim 1 or 7, wherein The driving system further comprises a sixth transmission assembly, the sixth transmission assembly comprises a ninth transmission gear, a tenth transmission gear, a differential and drive half shafts, the ninth transmission gear is arranged on the intermediate shaft, the tenth transmission gear is engaged with the ninth transmission gear, the differential is connected with the two drive half shafts and the tenth transmission gear, and the drive half shafts are used to drive wheels to rotate.

10. An automobile characterized by comprising: The driving system comprises: The driving system according to any one of claims 1-9; The wheels are connected with the driving system.

Images