Variable speed power system and automobile

Abstract

The utility model belongs to the technical field of automobiles, and particularly relates to a variable-speed power system and an automobile. The variable-speed power system comprises an engine, a first variable-speed module, a generator, a second variable-speed module and a motor, the engine and the generator can transmit power to the first variable-speed module and transmit the power to a lower-stage power module through the first variable-speed module, and the lower-stage power module can be an intermediate shaft, a gear on the intermediate shaft and the like; the motor can transmit power to the second speed change module, and the power can be transmitted to the lower-stage power module through the second speed change module; wherein the output shaft of the engine, the output shaft of the generator and the output shaft of the motor are located on the same horizontal line, so that the space ratio of the engine, the generator and the motor in the automobile is smaller; besides, the decoupling device is arranged between the generator and the motor, so that power decoupling between the generator and the motor can be realized, that is, the generator and the motor can operate independently, and the operation efficiency and the response rate of the motor are improved.

Description

Technical Field

[0001] The present invention relates to the field of automobile technology, and more particularly to a transmission power system and an automobile. Background Art

[0002] In existing automotive transmission power systems, the generator and the motor are generally designed in parallel, that is, the axis of the generator's output shaft and the axis of the motor are not on the same horizontal line, but a parallel layout is adopted. This design makes the layout space of the generator and the motor inside the car occupy a high proportion. In other designs, the axis of the generator's output shaft and the axis of the motor are designed to be on the same horizontal line, but the power decoupling is not achieved between the generator and the motor, that is, the generator and the motor move synchronously, which will limit the flexibility of the motor, resulting in insufficient efficiency and power response of the motor. Utility Model Content

[0003] One purpose of the invention of the present application is to provide a variable speed power system, wherein the axis of the output shaft of the generator and the axis of the output shaft of the motor are located at the same height, and power decoupling can be achieved between the generator and the motor.

[0004] Another invention object of the present application is to provide a vehicle comprising the above-mentioned speed-changing power system.

[0005] According to an embodiment of the present application, a first aspect provides a speed-changing power system, the speed-changing power system comprising:

[0006] engine;

[0007] A first transmission module, one end of which is connected to the output shaft of the engine, and the first transmission module is used to transmit power to a lower power module;

[0008] A generator, wherein an output shaft of the generator is connected to the other end of the first speed change module;

[0009] A second speed change module, wherein a decoupling device is provided between one end of the second speed change module and the output shaft of the generator, the decoupling device comprising an independent first connection end and a second connection end, the first connection end being connected to one end of the second speed change module and rotating synchronously with the second speed change module, the second connection end being connected to the output shaft of the generator and rotating synchronously with the output shaft of the generator, the decoupling device enabling the second speed change module and the generator to work independently;

[0010] The motor, the output shaft of the motor is connected to the other end of the second speed change module, the second speed change module transmits power to the lower power module, and the axis of the output shaft of the motor is on the same horizontal line as the axis of the engine and the axis of the output shaft of the generator.

[0011] In one embodiment, the decoupling device includes a shell and a rotating member, the rotating member rotates around an inner cavity of the shell, the first connecting end is arranged on the rotating member, and the second connecting end is arranged on the shell.

[0012] In one embodiment, the rotating member is a needle bearing.

[0013] In one embodiment, the first transmission module includes a clutch assembly and a first transmission gear, the clutch assembly includes a first clutch and a second clutch that can be selectively separated from an outer hub of the clutch assembly, the first transmission gear is connected to the outer hub of the clutch assembly, the first clutch is connected to the output shaft of the engine, and the second clutch is connected to the output shaft of the generator, and when the first clutch or the second clutch is combined with the outer hub of the clutch assembly, the clutch assembly can drive the first transmission gear to rotate.

[0014] In one embodiment, the first transmission module further includes a planetary gear train, a planet carrier of the planetary gear train is connected to the second clutch, and a sun gear of the planetary gear train is connected to an output shaft of the generator.

[0015] In one embodiment, a torsional vibration damper is further provided between the output shaft of the engine and the clutch assembly.

[0016] In one embodiment, the second speed change module includes a second transmission gear, one end of the second transmission gear is connected to the first connection end of the decoupling device, and the other end of the second transmission gear is connected to the motor.

[0017] In one embodiment, the speed-changing power system also includes an intermediate transmission shaft, the axis of the intermediate transmission shaft is parallel to the axis of the output shaft of the engine, the intermediate transmission shaft includes a third transmission gear and a fourth transmission gear, the third transmission gear is meshed with the first speed-changing module, and the fourth transmission gear is meshed with the second speed-changing module.

[0018] In one embodiment, the speed-changing power system further includes a differential module, and the intermediate transmission shaft further includes a fifth transmission gear, the fifth transmission gear is located on a side of the third transmission gear away from the fourth transmission gear, and the fifth transmission gear is connected to the differential module.

[0019] According to an embodiment of the present application, a second aspect provides a car, which includes the speed-changing power system.

[0020] In the variable speed power system of the present application, the output shaft of the engine, the output shaft of the generator and the output shaft of the motor are located on the same horizontal line, which has a smaller integrated size than the scheme in which the generator and the motor are arranged in parallel. This arrangement can reduce the space occupied by the three in the car; at the same time, a decoupling device is provided between the generator and the motor, wherein the decoupling device can achieve power decoupling between the generator and the motor, and the generator and the motor can work independently, thereby improving the operating efficiency and response speed of the motor. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 This is a schematic diagram of a module of a speed-changing power system in one embodiment of the present application;

[0022] Figure 2 It is a structural schematic diagram of a speed-changing power system in one embodiment of the present application.

[0023] Description of Figure Numbers:

[0024] 100. Engine;

[0025] 200, first transmission module; 210, clutch assembly; 211, first clutch; 212, second clutch; 213, outer hub; 220, first transmission gear; 230, planet carrier; 240, sun gear; 250, torsional vibration damper;

[0026] 300, generator; 400, second speed change module; 410, second transmission gear;

[0027] 500, decoupling device; 510, first connection end; 520, second connection end;

[0028] 530, housing; 540, rotating member;

[0029] 600, motor;

[0030] 700, intermediate transmission shaft; 710, third transmission gear; 720, fourth transmission gear;

[0031] 730, fifth transmission gear; 800, differential module. DETAILED DESCRIPTION

[0032] In order to make the purpose, technical solution and advantages of the present application more clearly understood, the present application is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present application and are not used to limit the present application.

[0033] It should be noted that the illustrations provided in this embodiment are only used to schematically illustrate the basic concept of the present invention.

[0034] The structures, proportions, sizes, etc. illustrated in the drawings in this specification are only used to match the contents disclosed in the specification so as to facilitate understanding and reading by persons familiar with this technology, and are not used to limit the conditions under which the present invention can be implemented. Any structural modification, change in proportion or adjustment of size should still fall within the scope of the technical contents disclosed in the present invention without affecting the effects and purposes that can be achieved by the present invention.

[0035] The directions or positional relationships indicated by the terms "upper", "lower", "left", "right", "middle", "longitudinal", "lateral", "horizontal", "inner", "outer", "radial", "circumferential" and the like in this specification are based on the directions or positional relationships shown in the drawings and are only for the convenience of simplifying the description. They do not indicate or imply that the devices or elements referred to must have a specific direction, be constructed and operate in a specific direction, and therefore cannot be understood as limiting the present invention. In addition, the terms "first" and "second" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance.

[0036] In the existing automobile speed-changing power system, the generator and the motor are generally designed in parallel, that is, the axis of the output shaft of the generator and the axis of the motor are not on the same horizontal line, but a parallel layout scheme is adopted. This design scheme makes the layout space of the generator and the motor inside the car account for a high proportion. In other design schemes, the axis of the output shaft of the generator and the axis of the motor are designed to be on the same horizontal line, but the power decoupling between the generator and the motor is not achieved, that is, the generator and the motor are synchronously moving, which will limit the flexibility of the motor, resulting in insufficient problems such as the efficiency and power response of the motor. In order to better solve this problem, the researchers in this application proposed a speed-changing power system, in which the output shaft of the generator and the output shaft of the motor are on the same horizontal line to reduce the space occupied by the engine, the generator and the motor inside the car; at the same time, a decoupling device is set between the generator and the motor to achieve power decoupling between the generator and the motor, and the generator and the motor can work independently, thereby improving the operating efficiency and response speed of the motor.

[0037] like Figure 1 As shown, Figure 1The module diagram of the speed-changing power system in one embodiment of the present application is shown in FIG. The speed-changing power system includes: an engine 100, a first speed-changing module 200, a generator 300, a second speed-changing module 400, and a motor 600. The engine 100 and the generator 300 can transmit power to the first speed-changing module 200, and transmit it to the lower power module through the first speed-changing module 200. The lower power module can be an intermediate shaft and gears on the intermediate shaft, etc. The motor 600 can transmit power to the second speed-changing module 400, and transmit power to the lower power module through the second speed-changing module 400. The output shaft, the output shaft of the generator 300 and the output shaft of the motor 600 are located on the same horizontal line, which makes the engine 100, the generator 300 and the motor 600 have a smaller integration, so that the engine 100, the generator 300 and the motor 600 can occupy a smaller space inside the car; in addition, a decoupling device 500 is provided between the generator 300 and the motor 600, and the decoupling device 500 can realize power decoupling between the generator 300 and the motor 600, so as to improve the operating efficiency of the motor 600 and the response rate of the motor 600.

[0038] Specifically, one end of the first speed change module 200 is connected to the output shaft of the engine 100, and the first speed change module 200 is used to transmit power to the lower power module; the output shaft of the generator 300 is connected to the other end of the first speed change module 200; a decoupling device 500 is arranged between one end of the second speed change module 400 and the output shaft of the generator 300, and the decoupling device 500 includes an independent first connection end 510 and a second connection end 520, wherein the first connection end 510 is connected to one end of the second speed change module 400 and rotates synchronously with the second speed change module 400, and the second connection end 520 is connected to the output shaft of the generator 300 and rotates synchronously with the output shaft of the generator 300, and the decoupling device 500 enables the second speed change module 400 and the generator 300 to work independently; the output shaft of the motor 600 is connected to the other end of the second speed change module 400, and the second speed change module 400 transmits power to the lower power module, and the axis of the output shaft of the motor 600 is located on the same horizontal line as the axis of the engine 100 and the axis of the output shaft of the generator 300.

[0039] In this embodiment, the researchers set the axis of the output shaft of the engine 100, the axis of the output shaft of the generator 300 and the axis of the output shaft of the motor 600 on the same horizontal line. Compared with the original scheme in which the axis of the output shaft of the generator 300 and the axis of the output shaft of the motor 600 are set in parallel, this scheme can have a smaller integrated size, so when it is installed inside the car, it can occupy a smaller space; at the same time, a decoupling device 500 is provided between the second speed change module 400 and the generator 300 in this embodiment, so that the generator 300 and the motor 600 can work independently, that is, the rotational power in the generator 300 will not be transmitted to the motor 600 through the second speed change module 400, and similarly, the rotational power in the motor 600 will not be transmitted to the generator 300 through the second speed change module 400, thereby realizing the decoupling between the generator 300 and the motor 600.

[0040] The working principle of the scheme in this embodiment is that the power generated by the engine 100 or the generator 300 can be transmitted to the lower power module through the first speed change module 200; the power generated by the motor 600 can be transmitted to the lower power module through the second speed change module 400; during the rotation of the generator 300 or the motor 600, due to the provision of the decoupling device 500, the power generated by the generator 300 is transmitted to the second connection end 520 of the decoupling device 500, and the power generated by the motor 600 is transmitted to the first connection end 510 of the decoupling device 500, thereby realizing independent operation between the generator 300 and the motor 600, and decoupling between the generator 300 and the motor 600. It should be noted that the first connection end 510 and the second connection end 520 are rotating ends, and the two are relatively independent in rotation, so that the generator 300 and the motor 600 can work independently and achieve the effect of decoupling.

[0041] For further information, see Figure 2 As shown, in one embodiment, the decoupling device 500 includes a shell 530 and a rotating member 540, wherein the decoupling device 500 includes a shell 530 and a rotating member 540, the rotating member 540 rotates around the inner cavity of the shell 530, the first connecting end 510 is arranged on the rotating member 540, and the second connecting end 520 is arranged on the shell 530.

[0042] In this embodiment, the power generated by the generator 300 will be transmitted to the second connection end 520, and then transmitted to the shell 530 through the second connection end 520, that is, the generator 300 will achieve synchronous movement with the shell 530; and the power generated by the motor 600 will be transmitted to the first connection end 510, and then transmitted to the rotating member 540 through the first connection end 510, and the rotating member 540 rotates around the inner cavity of the shell 530. In this way, decoupling between the generator 300 and the motor 600 can be achieved.

[0043] Furthermore, in one embodiment, the rotating member 540 is a needle bearing.

[0044] In this embodiment, the researchers determined that the rotating part 540 is a needle bearing. The purpose is that after the needle bearing is set in the housing 530, the ball of the needle bearing can rotate around the inner cavity of the housing 530, reducing the friction between the inner cavity of the housing 530; in addition, the needle bearing can share and evenly distribute the load, and can better carry the second speed module 400.

[0045] In one embodiment, see Figure 2 As shown, the clutch assembly 210 includes a first clutch 211 and a second clutch 212 that can be selectively separated from the outer hub 213 of the clutch assembly 210, the first transmission gear 220 is connected to the outer hub 213 of the clutch assembly 210, the first clutch 211 is connected to the output shaft of the engine 100, and the second clutch 212 is connected to the output shaft of the generator 300. When the first clutch 211 or the second clutch 212 is combined with the outer hub 213 of the clutch assembly 210, the clutch assembly 210 can drive the first transmission gear 220 to rotate.

[0046] In this embodiment, when the first clutch 211 is connected to the outer hub 213 of the clutch assembly 210, it means that the engine 100 can transmit power to the first transmission gear 220 along the first clutch 211; when the first clutch 211 is separated from the outer hub 213 of the clutch assembly 210, it means that the engine 100 and the clutch assembly 210 are in a separated state; similarly, when the second clutch 212 is connected to the outer hub 213 of the clutch assembly 210, it means that the generator 300 can transmit power to the first transmission gear 220 along the second clutch 212; and when the second clutch 212 is separated from the output shaft of the engine 100, it means that the generator 300 and the first transmission module 200 are in a separated state. In this embodiment, by providing the first clutch 211 and the second clutch 212 in the first transmission module 200, different powers can be transmitted to the first transmission gear 220 respectively, and transmitted to the lower power module through the first transmission gear 220, so as to achieve different power output requirements.

[0047] Further, in one embodiment, see Figure 2 As shown, the first transmission module 200 further includes a planetary gear train, a planet carrier 230 of the planetary gear train is connected to the second clutch 212 , and a sun gear 240 of the planetary gear train is connected to the output shaft of the generator 300 .

[0048] In this embodiment, the researchers set a planetary gear train in the first transmission module 200. By setting the planetary gear train, complex transmission ratio changes can be achieved to meet different speed and torque requirements. That is, the power generated by the generator 300 passes through the planetary gear train and then through the second clutch 212 to the first transmission gear 220.

[0049] In one embodiment, see Figure 2 As shown, a torsional vibration damper 250 is further provided between the output shaft of the engine 100 and the clutch assembly 210 .

[0050] In this embodiment, the torsional vibration damper 250 can reduce the torsional vibration and impact transmitted from the output shaft of the engine 100 to the clutch assembly 210, thereby reducing the wear and damage of the clutch assembly 210 and improving the stability and reliability of the entire transmission system.

[0051] In one embodiment, see Figure 2 As shown, the second transmission module 400 includes a second transmission gear 410 , one end of the second transmission gear 410 is connected to the first end of the decoupling device 500 , and the other end of the second transmission gear 410 is connected to the motor 600 .

[0052] In this embodiment, in this embodiment, the power generated by the motor 600 can be transmitted to the lower-level power module through the second transmission gear 410 in the second speed change module 400; in addition, since one end of the second transmission gear 410 is connected to the first end of the decoupling device 500, the power transmitted by the motor 600 to the second transmission gear 410 will not be transmitted to the generator 300.

[0053] In one embodiment, see Figure 2 As shown, the speed-changing power system also includes an intermediate transmission shaft 700, the axis of which is parallel to the axis of the output shaft of the engine 100, and the intermediate transmission shaft 700 includes a third transmission gear 710 and a fourth transmission gear 720, the third transmission gear 710 is meshed with the first speed-changing module 200, and the fourth transmission gear 720 is meshed with the second speed-changing module 400.

[0054] In this embodiment, the power generated by the engine 100 or the generator 300 can be transmitted to the lower third transmission gear 710 through the first speed change module 200, and similarly, the power generated by the motor 600 can be transmitted to the fourth gear through the second speed change module 400. That is, the engine 100, the generator 300 and the motor 600 can simultaneously transmit power to the intermediate transmission shaft 700, or at least one of the engine 100, the generator 300 and the motor 600 can transmit power to the intermediate transmission shaft 700 or transmit power to one of them through the intermediate transmission shaft 700. In this way, different torque outputs can be achieved to meet different operating requirements.

[0055] For further information, see Figure 2 As shown, the speed-changing power system further includes a differential module 800 , and the intermediate transmission shaft 700 further includes a fifth transmission gear 730 . The fifth transmission gear 730 is located on a side of the third transmission gear 710 away from the fourth transmission gear 720 , and the fifth transmission gear 730 is connected to the differential module 800 .

[0056] In this embodiment, the power generated in the intermediate transmission shaft 700 can be transmitted to the differential module 800 through the fifth transmission gear, and the power can be distributed to the wheels through the differential module 800, thereby achieving complete power output. In addition, the fifth transmission gear 730 is arranged on the side of the third transmission gear 710 away from the fourth transmission gear 720, because the transmission path when the torque is transmitted to the wheels can be shortened.

[0057] The present application also proposes a car, wherein the car includes the above-mentioned variable speed power system. When the above-mentioned variable speed power system is used in the car, the variable speed power occupies a small space inside the car; at the same time, the coupling separation between the generator 300 and the motor 600 can be achieved, so that the motor 600 has better operating efficiency and better response rate.

[0058] The technical features of the above embodiments may be combined arbitrarily. To make the description concise, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0059] The above embodiments only express several implementation methods of the present application, and the descriptions thereof are relatively specific and detailed, but they cannot be understood as limiting the scope of the utility model patent. It should be pointed out that, for a person of ordinary skill in the art, several variations and improvements can be made without departing from the concept of the present application, and these all belong to the protection scope of the present application. Therefore, the protection scope of the patent of the present application shall be subject to the attached claims.

Claims

1. A variable speed power system, characterized in that: The speed-changing power system comprises: Engine (100); A first speed change module (200), one end of the first speed change module (200) being connected to an output shaft of the engine (100), and the first speed change module (200) being used to transmit power to a lower-level power module; A generator (300), wherein an output shaft of the generator (300) is connected to the other end of the first speed change module (200); a second speed change module (400), wherein a decoupling device (500) is arranged between one end of the second speed change module (400) and the output shaft of the generator (300), and the decoupling device (500) comprises an independent first connection end (510) and a second connection end (520), wherein the first connection end (510) is connected to one end of the second speed change module (400) and rotates synchronously with the second speed change module (400), and the second connection end (520) is connected to the output shaft of the generator (300) and rotates synchronously with the output shaft of the generator (300), and the decoupling device (500) enables the second speed change module (400) and the generator (300) to work independently; A motor (600), wherein the output shaft of the motor (600) is connected to the other end of the second speed change module (400), and the second speed change module (400) transmits power to the lower power module. The axis of the output shaft of the motor (600) is located on the same horizontal line as the axis of the engine (100) and the axis of the output shaft of the generator (300).

2. The speed-changing power system according to claim 1, characterized in that: The decoupling device (500) comprises a shell (530) and a rotating member (540), wherein the rotating member (540) rotates around an inner cavity of the shell (530), the first connecting end (510) is arranged on the rotating member (540), and the second connecting end (520) is arranged on the shell (530).

3. The speed-changing power system according to claim 2, characterized in that: The rotating member (540) is a needle bearing.

4. The speed-changing power system according to claim 1, characterized in that: The first transmission module (200) comprises a clutch assembly (210) and a first transmission gear (220); the clutch assembly (210) comprises a first clutch (211) and a second clutch (212) which can be selectively separated from an outer hub (213) of the clutch assembly (210); the first transmission gear (220) is connected to the outer hub (213) of the clutch assembly (210); the first clutch (211) is connected to an output shaft of the engine (100); the second clutch (212) is connected to an output shaft of the generator (300); when the first clutch (211) or the second clutch (212) is combined with the outer hub (213) of the clutch assembly (210), the clutch assembly (210) can drive the first transmission gear (220) to rotate.

5. The speed-changing power system according to claim 4, characterized in that: The first transmission module (200) further comprises a planetary gear train, a planet carrier (230) of the planetary gear train is connected to the second clutch (212), and a sun gear (240) of the planetary gear train is connected to an output shaft of the generator (300).

6. The speed-changing power system according to claim 4, characterized in that: A torsional vibration damper (250) is also provided between the output shaft of the engine (100) and the clutch assembly (210).

7. The speed-changing power system according to claim 1, characterized in that: The second transmission module (400) comprises a second transmission gear (410), one end of the second transmission gear (410) is connected to the first connection end (510) of the decoupling device (500), and the other end of the second transmission gear (410) is connected to the motor (600).

8. The speed-changing power system according to claim 1, characterized in that: The speed-changing power system further comprises an intermediate transmission shaft (700), the axis of the intermediate transmission shaft (700) being parallel to the axis of the output shaft of the engine (100), the intermediate transmission shaft (700) comprising a third transmission gear (710) and a fourth transmission gear (720), the third transmission gear (710) being meshed with the first speed-changing module (200), and the fourth transmission gear (720) being meshed with the second speed-changing module (400).

9. The speed-changing power system according to claim 8, characterized in that: The speed-changing power system further includes a differential module (800), and the intermediate transmission shaft (700) further includes a fifth transmission gear (730). The fifth transmission gear (730) is located on a side of the third transmission gear (710) away from the fourth transmission gear (720), and the fifth transmission gear (730) is connected to the differential module (800).

10. An automobile, characterized in that: The automobile comprises a speed-changing power system as claimed in any one of claims 1 to 9.

Images