Hybrid electromechanical coupling system based on multi-mode switching

Abstract

The present invention provides a hybrid electromechanical coupling system based on multi-mode switching, which relates to the field of dual-power coupling technology, including: cylinder No. 1; the transmission housing is fixedly connected to cylinder No. 1 and cylinder No. 2, respectively, and cylinder No. 1 is internally connected to piston cylinder No. 1, and cylinder No. 2 is internally connected to piston cylinder No. 2; cylinder No. 1 is internally connected to input shaft No. 1, and input shaft No. 1 is connected to the engine; cylinder No. 2 is internally connected to input shaft No. 2, and input shaft No. 2 is connected to the motor. The present invention adopts a single set of hydraulic drive structure, which can achieve the effect of alternating power transmission between the engine and the motor, and can also achieve the effect of synchronous power transmission between the engine and the motor, making it easier to control. It solves the problem that in the application process of traditional hybrid electromechanical coupling systems, the two sets of power output structures require the design of two independent mechanical structures to cooperate with electrical components for control, which is relatively cumbersome.

Description

Technical Field

[0001] The present invention relates to the technical field of dual-power coupling, and in particular to a hybrid electromechanical coupling system based on multi-mode switching. Background Art

[0002] A hybrid vehicle is a new concept of vehicle, which is a pure electric vehicle with an internal combustion engine installed, so that it has the advantages of both a traditional engine-powered vehicle and an electric vehicle. It can reduce vehicle pollution and increase the mileage of pure electric vehicles. In a hybrid vehicle, an electromechanical coupling system is required to couple the power of the engine and the electric motor together as the vehicle's power source, and can adjust the power input of the engine and the electric motor according to the control instructions based on the vehicle's driving conditions.

[0003] However, in the current application of traditional hybrid electromechanical coupling systems, the two power output structures require the design of two independent mechanical structures to cooperate with electrical components for operation. The space required in the vehicle occupies a large area, the actual operation is relatively cumbersome, and mechanical and electrical failures are very likely to occur, which creates a burden for subsequent maintenance. Summary of the Invention

[0004] In view of this, the present invention provides a hybrid electromechanical coupling system based on multi-mode switching, which drives the No. 1 piston cylinder and the No. 2 piston cylinder to move inward and outward through hydraulic drive, thereby driving the No. 1 movable shaft and the No. 2 movable shaft to move inward and outward synchronously through the No. 1 piston cylinder and the No. 2 piston cylinder, so that the driving gear A and the driving gear B are engaged with the driven gear, realizing the mutual switching of engine power and electric motor power, and ensuring the power switching transmission effect.

[0005] The present invention provides a hybrid electromechanical coupling system based on multi-mode switching, which specifically includes: a No. 1 cylinder body; the transmission housing is fixedly connected to the No. 1 cylinder body and the No. 2 cylinder body, and the No. 1 piston cylinder is connected to the interior of the No. 1 cylinder body, and the No. 2 piston cylinder is connected to the interior of the No. 2 cylinder body; the No. 1 input shaft is connected to the interior of the No. 1 cylinder body, and the No. 1 input shaft is connected to the engine; the No. 2 cylinder body is connected to the No. 2 input shaft, and the No. 2 input shaft is connected to the electric motor; the No. 1 piston cylinder is connected to the No. 1 movable shaft, and the No. 1 movable shaft is connected to the No. 1 input shaft; the No. 2 piston cylinder is connected to the No. 2 movable shaft, and the No. 2 movable shaft is connected to the No. 2 input shaft; the transmission housing is connected to the output shaft, and the output shaft is transmission-connected to the No. 1 input shaft and the No. 2 input shaft through the No. 1 movable shaft and the No. 2 movable shaft, and the No. 2 movable shaft is connected to the No. 2 input shaft;

[0006] Optionally, the No. 1 input shaft is rotatably connected to the inside of the No. 1 cylinder body, a spline groove A is provided at the first section of the No. 1 input shaft, the No. 1 movable shaft is rotatably connected to the No. 1 piston cylinder, a spline portion A is provided at the tail end of the No. 1 movable shaft, and the spline portion A is slidably connected to the spline groove A.

[0007] Optionally, the No. 2 input shaft is rotatably connected to the inside of the No. 2 cylinder body, a spline groove B is provided at the first section of the No. 2 input shaft, the No. 2 movable shaft is rotatably connected to the No. 2 piston cylinder, a spline portion B is provided at the tail end of the No. 2 movable shaft, and the spline portion B is slidably connected to the spline groove B.

[0008] Optionally, a movable chamber A is opened inside the No. 1 cylinder body, and the No. 1 piston cylinder is slidably connected to the movable chamber A; a movable chamber B is opened inside the No. 2 cylinder body, and the No. 2 piston cylinder is slidably connected to the movable chamber A.

[0009] Optionally, the first section of the No. 1 movable shaft is provided with a driving gear A, which moves in the transmission housing; the first section of the No. 2 movable shaft is provided with a driving gear B, which moves in the transmission housing; the output shaft is rotatably connected to the transmission housing; the tail end of the output shaft is provided with a driven gear, which is respectively engaged with the driving gear A and the driving gear B.

[0010] Optionally, a spline cavity A is provided inside the No. 1 cylinder body, a spline ring A is provided at the tail of the No. 1 piston cylinder, and the spline ring A is slidably connected to the spline cavity A. A spline cavity B is provided inside the No. 2 cylinder body, a spline ring B is provided at the tail of the No. 2 piston cylinder, and the spline ring B is slidably connected to the spline cavity B.

[0011] Optionally, the No. 1 piston cylinder divides the active chamber A into zone A and zone B, and the No. 2 piston cylinder divides the active chamber B into zone C and zone D.

[0012] Optionally, the area B is connected to the area C, and the area A and the area D are respectively connected to the hydraulic oil circuit.

[0013] Beneficial effects

[0014] Compared with the traditional hybrid electromechanical coupling system, the hybrid electromechanical coupling system based on multi-mode switching according to each embodiment of the present invention drives the No. 1 piston cylinder and the No. 2 piston cylinder to move inward and outward through hydraulic drive, thereby driving the No. 1 movable shaft and the No. 2 movable shaft to move inward and outward synchronously through the No. 1 piston cylinder and the No. 2 piston cylinder, so that the driving gear A and the driving gear B are engaged with the driven gear, realizing the mutual switching of engine power and electric motor power, and ensuring the power switching transmission effect.

[0015] In addition, through the arrangement of the No. 1 piston cylinder and the No. 2 piston cylinder, while the No. 1 input shaft drives the No. 1 movable shaft to rotate and the No. 2 input shaft drives the No. 2 movable shaft to rotate, the No. 1 piston cylinder is splined to the No. 1 cylinder body, and the No. 2 piston cylinder is splined to the No. 2 cylinder body, to prevent the No. 1 piston cylinder and the No. 2 piston cylinder from rotating synchronously, thereby ensuring the stability of the No. 1 piston cylinder and the No. 2 piston cylinder.

[0016] In addition, through the arrangement of the No. 1 cylinder body and the No. 2 cylinder body, when the hydraulic oil enters through area A, the No. 1 piston cylinder drives the No. 1 movable shaft to move inward, and the front end of the No. 1 movable shaft is separated from the output shaft. The hydraulic oil inside area B enters area C, and the hydraulic oil inside area D is discharged. The No. 2 piston cylinder drives the No. 2 movable shaft to move outward, and the front end of the No. 2 movable shaft is meshed with the output shaft. The gearbox is driven solely by the electric motor. When the hydraulic oil enters through area D, the No. 2 piston cylinder drives the No. 2 movable shaft to move inward, and the front end of the No. 2 movable shaft is separated from the output shaft. The hydraulic oil inside area C flows back to area B, and the hydraulic oil inside area A Discharge, the No. 1 piston cylinder drives the No. 1 movable shaft to move outward, and the front end of the No. 1 movable shaft engages with the output shaft. The gearbox is driven solely by the engine to achieve alternating power transmission between the engine and the electric motor. When the metering of the hydraulic oil entering area A is half of the normal value, half of the hydraulic oil measured in area B enters area C, and half of the hydraulic oil measured in area D is discharged. The No. 1 movable shaft and the No. 2 movable shaft are both moved to the middle position, so that the front ends of the No. 1 movable shaft and the No. 2 movable shaft are engaged with the output shaft at the same time. The gearbox is driven synchronously by the engine and the electric motor, and the operation is easier. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings of the embodiments are briefly introduced below.

[0018] The drawings described below only relate to some embodiments of the present invention, but are not intended to limit the present invention.

[0019] In the attached figure:

[0020] Figure 1 It shows a schematic diagram of the shaft side structure according to an embodiment of the present invention;

[0021] Figure 2 It shows a schematic cross-sectional view of an engine in a single driving state according to an embodiment of the present invention;

[0022] Figure 3 It shows a schematic cross-sectional structural diagram of a motor in a single driving state according to an embodiment of the present invention;

[0023] Figure 4 It shows a cross-sectional structural diagram of an engine and a motor in a jointly driven state according to an embodiment of the present invention;

[0024] Figure 5 A schematic diagram of an electromechanical coupling system according to an embodiment of the present invention is shown;

[0025] Figure 6 It shows a schematic cross-sectional structure diagram of a No. 1 cylinder block, a No. 2 cylinder block and a transmission housing according to an embodiment of the present invention;

[0026] Figure 7 A schematic diagram of the axial structure of a No. 1 piston cylinder and a No. 2 piston cylinder according to an embodiment of the present invention is shown;

[0027] Figure 8 A schematic diagram of the split structure of the No. 1 input shaft and the No. 1 movable shaft, and the No. 2 input shaft and the No. 2 movable shaft according to an embodiment of the present invention is shown.

[0028] Reference Signs List

[0029] 1. Cylinder No. 1; 101. Movable cavity A; 1011. Area A; 1012. Area B; 102. Spline cavity A; 2. Cylinder No. 2; 201. Movable cavity B; 2011. Area C; 2012. Area D; 202. Spline cavity B; 3. Transmission housing; 4. Piston cylinder No. 1; 401. Spline ring A; 5. Piston cylinder No. 2; 501. Spline ring B; 6. Input shaft No. 1; 601. Spline groove A; 7. Input shaft No. 2; 701. Spline groove B; 8. Movable shaft No. 1; 801. Spline part A; 802. Driving gear A; 9. Movable shaft No. 2; 901. Spline part B; 902. Driving gear B; 10. Output shaft; 1001. Driven gear; 11. Engine; 12. Electric motor; 13. Gearbox. DETAILED DESCRIPTION

[0030] In order to make the purpose, scheme and advantages of the technical solution of the present invention more clear, the technical solution of the embodiment of the present invention will be clearly and completely described below in conjunction with the drawings of specific embodiments of the present invention. Unless otherwise specified, the terms used herein have the common meanings in the art. The same reference numerals in the drawings represent the same components.

[0031] Example:

[0032] Please refer to Figures 1 to 8 :

[0033] The present invention proposes a hybrid electromechanical coupling system based on multi-mode switching, comprising: a No. 1 cylinder body 1; a transmission housing 3 is fixedly connected to the No. 1 cylinder body 1 and the No. 2 cylinder body 2 respectively, and the No. 1 cylinder body 1 is internally connected to the No. 1 piston cylinder 4, and the No. 2 cylinder body 2 is internally connected to the No. 2 piston cylinder 5; an active chamber A101 is provided inside the No. 1 cylinder body 1, and the No. 1 piston cylinder 4 is slidably connected to the active chamber A101, and an active chamber B201 is provided inside the No. 2 cylinder body 2, and the No. 2 piston cylinder 5 is slidably connected to the active chamber A101; the No. 1 cylinder body 1 is internally connected to the No. 1 input shaft 6, and the No. 1 input shaft 6 is connected to the engine 11; the No. 2 cylinder body 2 is internally connected to the No. 2 input shaft 7, and the No. 2 input shaft 7 is connected to the motor 12; the No. 1 piston cylinder 4 is internally connected to the No. 1 movable shaft 8, and the No. 1 movable shaft 8 is connected to the No. 1 input shaft 6; the No. 1 input shaft 6 is rotatably connected to the No. 1 cylinder body. 1, a spline groove A601 is formed at the first section of the No. 1 input shaft 6, and the No. 1 movable shaft 8 is rotatably connected to the No. 1 piston cylinder 4. A spline portion A801 is formed at the rear end of the No. 1 movable shaft 8, and the spline portion A801 is slidably connected to the spline groove A601; the No. 2 piston cylinder 5 is connected to the No. 2 movable shaft 9, and the No. 2 movable shaft 9 is connected to the No. 2 input shaft 7; the No. 2 input shaft 7 is rotatably connected to the No. 2 cylinder body 2, and a spline groove B701 is formed at the first section of the No. 2 input shaft 7. The No. 2 movable shaft 9 is rotatably connected to the No. 2 piston cylinder 5, and a spline portion B901 is formed at the rear end of the No. 2 movable shaft 9, and the spline portion B901 is slidably connected to the spline groove B701; the output shaft 10 is connected to the transmission housing 3, and the output shaft 10 is transmission-connected to the No. 1 input shaft 6 and the No. 2 input shaft 7 through the No. 1 movable shaft 8 and the No. 2 movable shaft 9, respectively, and the output shaft 10 is connected to the gearbox 13.

[0034] In addition, according to an embodiment of the present invention, the first section of the first movable shaft 8 is provided with a driving gear A802, which moves within the transmission housing 3. The first section of the second movable shaft 9 is provided with a driving gear B902, which moves within the transmission housing 3. The output shaft 10 is rotatably connected to the transmission housing 3. The rear end of the output shaft 10 is provided with a driven gear 1001, which meshes with the driving gear A802 and the driving gear B902 respectively.

[0035] By adopting the above technical solution, the No. 1 piston cylinder 4 and the No. 2 piston cylinder 5 are driven to move inward and outward by hydraulic drive, thereby driving the No. 1 movable shaft 8 and the No. 2 movable shaft 9 to move inward and outward synchronously through the No. 1 piston cylinder 4 and the No. 2 piston cylinder 5, so that the driving gear A802 and the driving gear B902 are engaged with the driven gear 1001, realizing the mutual switching of the power of the engine 11 and the power of the electric motor 12, and ensuring the power switching transmission effect.

[0036] In addition, according to an embodiment of the present invention, a spline cavity A102 is formed inside the No. 1 cylinder body 1, a spline ring A401 is formed at the tail end of the No. 1 piston cylinder 4, and the spline ring A401 is slidably connected to the spline cavity A102; a spline cavity B202 is formed inside the No. 2 cylinder body 2, and a spline ring B501 is formed at the tail end of the No. 2 piston cylinder 5, and the spline ring B501 is slidably connected to the spline cavity B202;

[0037] By adopting the above technical solution, while the No. 1 input shaft 6 drives the No. 1 movable shaft 8 to rotate and the No. 2 input shaft 7 drives the No. 2 movable shaft 9 to rotate, the No. 1 piston cylinder 4 is splined to the No. 1 cylinder body 1, and the No. 2 piston cylinder 5 is splined to the No. 2 cylinder body 2, preventing the No. 1 piston cylinder 4 and the No. 2 piston cylinder 5 from rotating synchronously, thereby ensuring the stability of the No. 1 piston cylinder 4 and the No. 2 piston cylinder 5.

[0038] In addition, according to an embodiment of the present invention, the No. 1 piston cylinder 4 divides the active chamber A101 into the A zone 1011 and the B zone 1012, and the No. 2 piston cylinder 5 divides the active chamber B201 into the C zone 2011 and the D zone 2012. The B zone 1012 and the C zone 2011 are connected, and the A zone 1011 and the D zone 2012 are respectively connected to the hydraulic oil circuit;

[0039] With the above technical solution, when the hydraulic oil enters through area A 1011, the No. 1 piston cylinder 4 drives the No. 1 movable shaft 8 to move inward, and the front end of the No. 1 movable shaft 8 is separated from the output shaft 10. The hydraulic oil inside area B 1012 enters area C 2011, and the hydraulic oil inside area D 2012 is discharged. The No. 2 piston cylinder 5 drives the No. 2 movable shaft 9 to move outward, and the front end of the No. 2 movable shaft 9 is meshed with the output shaft 10. The gearbox 13 is driven by the motor 12 alone. When the hydraulic oil enters through area D 2012, the No. 2 piston cylinder 5 drives the No. 2 movable shaft 9 to move inward, and the front end of the No. 2 movable shaft 9 is separated from the output shaft 10. The hydraulic oil inside area C 2011 flows back to area B 1012, and the hydraulic oil inside area A 1011 Discharge, the No. 1 piston cylinder 4 drives the No. 1 movable shaft 8 to move outward, and the front end of the No. 1 movable shaft 8 is engaged with the output shaft 10, and the gearbox 13 is driven by the engine 11 alone, so as to realize the alternating power transmission effect of the engine 11 and the electric motor 12. When the metering of the hydraulic oil entering the interior of area A 1011 is half of the normal value, half of the metered hydraulic oil in area B 1012 enters area C 2011, and half of the metered hydraulic oil in area D 2012 is discharged, and the No. 1 movable shaft 8 and the No. 2 movable shaft 9 are both moved to the middle position, so that the front ends of the No. 1 movable shaft 8 and the No. 2 movable shaft 9 are engaged with the output shaft 10 at the same time, and the gearbox 13 is driven synchronously by the engine 11 and the electric motor 12, which makes the operation easier.

[0040] Specific usage and function of this embodiment: When the present invention is in use, when the hydraulic oil enters the internal active chamber A101 of the No. 1 cylinder body 1 through the A area 1011, the No. 1 piston cylinder 4 drives the No. 1 movable shaft 8 to move inward, and the front end driving gear A802 of the No. 1 movable shaft 8 is separated from the output shaft 10, the internal hydraulic oil of the B area 1012 enters the C area 2011, and the internal hydraulic oil of the D area 2012 is discharged, and the No. 2 piston cylinder 5 drives the No. 2 movable shaft 9 to move outward, and the front end driving gear B902 of the No. 2 movable shaft 9 is meshed with the output shaft 10, and the electric The motive 12 drives the gearbox 13 in sequence through the No. 1 input shaft 6, the No. 1 movable shaft 8 and the output shaft 10; when the hydraulic oil enters the movable chamber B201 inside the No. 2 cylinder 2 through the D area 2012, the No. 2 piston cylinder 5 drives the No. 2 movable shaft 9 to move inward, and the driving gear B902 at the front end of the No. 2 movable shaft 9 is separated from the output shaft 10, and the hydraulic oil inside the C area 2011 flows back to the B area 1012, and the hydraulic oil inside the A area 1011 is discharged, and the No. 1 piston cylinder 4 drives the No. 1 movable shaft 8 to move outward, and the driving gear A8 at the front end of the No. 1 movable shaft 8 is 02 is meshed with the output shaft 10, and the engine 11 drives the gearbox 13 through the second input shaft 7, the second movable shaft 9 and the output shaft 10 in sequence, realizing the alternating power transmission effect between the engine 11 and the motor 12; when the metering of the hydraulic oil entering the internal of area A 1011 is half of the normal value, half of the metering of the hydraulic oil in the internal of area B 1012 enters the internal of area C 2011, and half of the metering of the hydraulic oil in the internal of area D 2012 is discharged, the first movable shaft 8 and the second movable shaft 9 are both moved to the middle position, so that the front end driving gear A of the first movable shaft 8 802 and the front end driving gear B902 of the No. 2 movable shaft 9 are engaged with the output shaft 10 at the same time, and the gearbox 13 is driven synchronously by the engine 11 and the electric motor 12, which makes the operation easier; while the No. 1 input shaft 6 drives the No. 1 movable shaft 8 to rotate and the No. 2 input shaft 7 drives the No. 2 movable shaft 9 to rotate, the No. 1 piston cylinder 4 is splined to the No. 1 cylinder body 1, and the No. 2 piston cylinder 5 is splined to the No. 2 cylinder body 2, to prevent the No. 1 piston cylinder 4 and the No. 2 piston cylinder 5 from rotating synchronously, thereby ensuring the stability of the No. 1 piston cylinder 4 and the No. 2 piston cylinder 5.

[0041] Finally, it should be noted that when describing the positions of various components and the matching relationships between them, the present invention usually takes one / a pair of components as an example. However, those skilled in the art should understand that such positions, matching relationships, etc. are also applicable to other components / other pairs of components.

[0042] The above description is merely an exemplary embodiment of the present invention and is not intended to limit the scope of protection of the present invention. The scope of protection of the present invention is determined by the appended claims.

Claims

1. A hybrid electromechanical coupling system based on multi-mode switching, characterized in that: include: The first cylinder (1); the transmission housing (3) is fixedly connected to the first cylinder (1) and the second cylinder (2), and the first cylinder (1) is internally connected to the first piston cylinder (4), and the second cylinder (2) is internally connected to the second piston cylinder (5); the first cylinder (1) is internally connected to the first input shaft (6), and the first input shaft (6) is connected to the engine (11); the second cylinder (2) is internally connected to the second input shaft (7), and the second input shaft (7) is connected to the motor (12); the first piston cylinder ( 4) A movable shaft (8) is connected inside, and the movable shaft (8) is connected to the input shaft (6); a movable shaft (9) is connected inside the second piston cylinder (5), and the movable shaft (9) is connected to the input shaft (7); an output shaft (10) is connected inside the transmission housing (3), and the output shaft (10) is respectively connected to the input shaft (6) and the input shaft (7) through the movable shaft (8) and the movable shaft (9), and the output shaft (10) is connected to the gearbox (13); The first input shaft (6) is rotatably connected to the inside of the first cylinder body (1), and a spline groove A (601) is provided at the first section of the first input shaft (6). The first movable shaft (8) is rotatably connected to the inside of the first piston cylinder (4), and a spline portion A (801) is provided at the tail end of the first movable shaft (8), and the spline portion A (801) is slidably connected to the spline groove A (601). The second input shaft (7) is rotatably connected to the inside of the second cylinder body (2), and a spline groove B (701) is provided at the first section of the second input shaft (7). The second movable shaft (9) is rotatably connected to the inside of the second piston cylinder (5), and a spline portion B (901) is provided at the tail end of the second movable shaft (9), and the spline portion B (901) is slidably connected to the spline groove B (701); The first cylinder body (1) has an active cavity A (101) formed therein, and the first piston cylinder (4) is slidably connected to the active cavity A (101); the second cylinder body (2) has an active cavity B (201) formed therein, and the second piston cylinder (5) is slidably connected to the active cavity A (101); The first section of the movable shaft (8) is provided with a driving gear A (802), which is movably arranged in the transmission housing (3); the first section of the movable shaft (9) is provided with a driving gear B (902), which is movably arranged in the transmission housing (3); the output shaft (10) is rotatably connected to the transmission housing (3); the tail end of the output shaft (10) is provided with a driven gear (1001), which is meshed with the driving gear A (802) and the driving gear B (902) respectively; The first cylinder body (1) is provided with a spline cavity A (102), the tail of the first piston cylinder (4) is provided with a spline ring A (401), and the spline ring A (401) is slidably connected to the spline cavity A (102). The second cylinder body (2) is provided with a spline cavity B (202), the tail of the second piston cylinder (5) is provided with a spline ring B (501), and the spline ring B (501) is slidably connected to the spline cavity B (202).

2. The hybrid electromechanical coupling system based on multi-mode switching according to claim 1, characterized in that: The No. 1 piston cylinder (4) divides the active chamber A (101) into zone A (1011) and zone B (1012), and the No. 2 piston cylinder (5) divides the active chamber B (201) into zone C (2011) and zone D (2012).

3. The hybrid electromechanical coupling system based on multi-mode switching according to claim 2, characterized in that: The B area (1012) and the C area (2011) are connected, and the A area (1011) and the D area (2012) are respectively connected to the hydraulic oil circuit.

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