CN113738833B - Take out of order to keep off speed change system - Google Patents

Take out of order to keep off speed change system Download PDF

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Publication number
CN113738833B
CN113738833B CN202111065640.7A CN202111065640A CN113738833B CN 113738833 B CN113738833 B CN 113738833B CN 202111065640 A CN202111065640 A CN 202111065640A CN 113738833 B CN113738833 B CN 113738833B
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Prior art keywords
gear
clutch
output shaft
motor
transmission
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CN202111065640.7A
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CN113738833A (en
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郝庆军
冯涛
王琳
陆中华
朱学军
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Capotech Suzhou Co ltd
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Capotech Suzhou Co ltd
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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16H—GEARING
    • F16H3/00—Toothed gearings for conveying rotary motion with variable gear ratio or for reversing rotary motion
    • F16H3/02—Toothed gearings for conveying rotary motion with variable gear ratio or for reversing rotary motion without gears having orbital motion
    • F16H3/20—Toothed gearings for conveying rotary motion with variable gear ratio or for reversing rotary motion without gears having orbital motion exclusively or essentially using gears that can be moved out of gear
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16H—GEARING
    • F16H57/00—General details of gearing
    • F16H57/02—Gearboxes; Mounting gearing therein
    • F16H57/023—Mounting or installation of gears or shafts in the gearboxes, e.g. methods or means for assembly
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16H—GEARING
    • F16H57/00—General details of gearing
    • F16H57/02—Gearboxes; Mounting gearing therein
    • F16H57/028—Gearboxes; Mounting gearing therein characterised by means for reducing vibration or noise
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16H—GEARING
    • F16H61/00—Control functions within control units of change-speed- or reversing-gearings for conveying rotary motion ; Control of exclusively fluid gearing, friction gearing, gearings with endless flexible members or other particular types of gearing
    • F16H61/04—Smoothing ratio shift

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Structure Of Transmissions (AREA)
  • Transmission Devices (AREA)
  • Electric Propulsion And Braking For Vehicles (AREA)

Abstract

The invention provides a speed change system with a escaping gear, which is characterized in that a third clutch is introduced to add a escaping gear, so that once unexpected conditions such as pit collapse of a road surface are encountered, the requirement of the escaping condition can be met through torque provided by the escaping gear, and the driving stability is ensured; the scheme that the double motors are symmetrically arranged on two sides of the speed change system is adopted, so that the overall mass arrangement of the speed change system is balanced, the balanced arrangement of power components on each shaft is combined, vibration and noise in running of a vehicle are reduced, running safety is guaranteed, and service life is prolonged.

Description

Take out of order to keep off speed change system
Technical Field
The invention relates to the field of new energy transmission, in particular to a speed changing system with a gear-out-of-order.
Background
In the prior art, the multi-motor transmission is often adjusted in different speed ratios through a plurality of gear settings, and once unexpected conditions such as collapse of a road pit are encountered, the torque provided by the existing speed ratio cannot meet the requirements of the escaping condition; on the other hand, the existing double motors or more motors are often arranged on the same side of the speed change system, so that the whole mass of the speed change system is unbalanced in arrangement while the occupied space is small and the structure is compact, vibration and noise are increased in the running process of a vehicle, and the running safety and the service life are influenced.
Disclosure of Invention
In order to solve the defects and shortcomings in the prior art, the invention provides a speed changing system with a gear-out-of-order function.
The technical scheme provided by the invention is as follows: a belt out of gear transmission system comprising:
a first motor (EM 1), wherein an output shaft (1) of the first motor (EM 1) is selectively connected with a transmission system output shaft (3) through a first motor input gear pair, or is selectively connected with the transmission system output shaft (3) through a first transmission gear pair (EGR 1) and a second transmission gear pair (EGR 2);
a second motor (EM 2), wherein an output shaft (2) of the second motor (EM 2) can be selectively connected with a speed change system output shaft (3) through a second motor input gear pair; or the first transmission gear pair (EGR 1) and the second transmission gear pair (EGR 2) can be selectively connected with the speed change system output shaft (3);
a first clutch B (18), the first clutch B (18) being provided on the output shaft (1) of the first electric motor (EM 1) and selectively engaging or disengaging the output shaft (1) of the first electric motor (EM 1) with or from the gear of the first electric motor input gear pair, or selectively engaging or disengaging the output shaft (1) of the first electric motor (EM 1) with or from the gear of the first transmission gear pair (EGR 1);
a second clutch a (17), the second clutch a (17) being provided on the output shaft (2) of the second motor (EM 2) and selectively engaging or disengaging the output shaft (2) of the second motor (EM 2) with or from the gear of the second motor input gear pair;
a third clutch C (19), said third clutch C (19) being provided at the transmission output shaft (3) and selectively engaging or disengaging the transmission output shaft (3) with the second transmission gear pair (EGR 2).
Further, the first transmission gear pair (EGR 1) comprises a first motor transmission gear (10) which is sleeved on the output shaft (1) of the first motor (EM 1), a second motor transmission gear (11) which is fixed on the output shaft (2) of the second motor (EM 2), and an output transmission gear (12) which is sleeved on the output shaft (3) of the speed change system, wherein the output transmission gear (12) is meshed with the first motor transmission gear (10) and the second motor transmission gear (11).
Further, the second transmission gear pair (EGR 2) is a planetary gear transmission mechanism, and the planetary gear transmission mechanism comprises a sun gear (13) which is sleeved on the output shaft (3) of the speed change system and fixedly connected with the output transmission gear (12), a planet wheel (14) which is externally meshed with the sun gear (13), a planet carrier (15) which can be selectively connected with the output shaft (3) of the speed change system, and a gear ring (16) which is fixedly connected with the outside.
Further, the first motor input gear pair comprises a second gear pair (GR 2) positioned at the left side of the first clutch B (18), the second gear pair (GR 2) comprises a second driving gear (6) which is sleeved on the output shaft (1) of the first motor (EM 1) in a hollow mode and a second driven gear (7) which is fixed on the output shaft (3) of the speed change system, and the second driving gear (6) is correspondingly meshed with the second driven gear (7).
Further, the second motor input gear pair comprises a first gear pair (GR 1) located at the left side of the second clutch a (17) and a third gear pair (GR 3) located at the right side of the second clutch a (17);
the first gear pair (GR 1) comprises a first driving gear (4) which is sleeved on the output shaft (2) of the second motor (EM 2) in a hollow mode and a first driven gear (5) which is fixed on the output shaft (3) of the speed change system, and the first driving gear (4) is correspondingly meshed with the first driven gear (5);
the third gear pair (GR 3) comprises a third driving gear (8) which is sleeved on the output shaft (2) of the second motor (EM 2) in a hollow mode and a third driven gear (9) which is fixed on the output shaft (3) of the speed change system, and the third driving gear (8) is correspondingly meshed with the third driven gear (9).
Further, the first motor (EM 1) and the second motor (EM 2) are symmetrically arranged on two sides of the speed change system output shaft (3).
Further, the second gear pair (GR 2) is located between the first gear pair (GR 1) and the third gear pair (GR 3) in the extending direction of the transmission output shaft (3); the first clutch B (18) is located between the second clutch A (17) and the third clutch C (19).
Further, along the extending direction of the transmission output shaft (3), the second transmission gear pair (EGR 2) is located further away from the first motor (EM 1) and the second motor (EM 2) than the first transmission gear pair (EGR 1).
Further, the motor further comprises a third motor (EM 3), wherein an output shaft of the third motor (EM 3) is fixedly connected with the speed change system output shaft (3) and is coaxially arranged with the speed change system output shaft (3).
Further, the working positions of the clutches under each gear of the speed change system are as follows:
1) In neutral, the first clutch B is centered, the second clutch A is centered, and the third clutch C is not engaged;
2) When the gear is released, the first clutch B is engaged with a gear of the first transmission gear pair on the other side, the second clutch A is centered, and the third clutch C is engaged;
3) In the 1 st gear, the first clutch B is engaged with the gear of the first transmission gear pair on the other side, the second clutch A is engaged with the gear of the second motor input gear pair on one side, and the third clutch C is not engaged;
3) In the 2-gear, the first clutch B is engaged with the gear of the first motor input gear pair at one side, the second clutch A is engaged with the gear of the second motor input gear pair at one side, and the third clutch C is not engaged;
4) In the 3 rd gear, the first clutch B is engaged with the gear of the first motor input gear pair at one side, the second clutch A is engaged with the gear of the second motor input gear pair at the other side, and the third clutch C is not engaged;
5) In the 4 th gear, the first clutch B is engaged with the gear of the first transmission gear pair at the other side, the second clutch A is engaged with the gear of the second motor input gear pair at the other side, and the third clutch C is not engaged.
Compared with the prior art, the invention has the following beneficial effects:
1) The invention provides a speed change system with a escaping gear, which is characterized in that a third clutch C is introduced to add a escaping gear, and once unexpected conditions such as pit collapse of a road surface are encountered, the requirement of the escaping condition can be met through torque provided by the escaping gear, so that the driving stability is ensured.
2) The invention provides a speed change system with a release gear, which adopts a scheme that double motors are symmetrically arranged in the speed change system, so that the overall mass arrangement of the speed change system is balanced, the balanced arrangement of power components on each shaft is combined, the vibration and noise in the running process of a vehicle are reduced, the running safety is ensured, and the service life is prolonged.
Drawings
Fig. 1 is a schematic structural diagram of embodiment 1 of the present invention.
Fig. 2 is a schematic structural diagram of embodiment 2 of the present invention.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
In the description of the present invention, it should be noted that the directions or positional relationships indicated by the terms "upper", "lower", "inner", "outer", "front", "rear", "both ends", "one end", "the other end", etc. are based on the directions or positional relationships shown in the drawings, are merely for convenience of describing the present invention and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a specific direction, be configured and operated in the specific direction, and thus should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
In the description of the present invention, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "provided," "connected," and the like are to be construed broadly, and may be fixedly connected, detachably connected, or integrally connected, for example; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present invention will be understood in specific cases by those of ordinary skill in the art.
[ example 1 ]
Fig. 1 shows an embodiment 1 of a shift system with out-of-order gear according to the present invention, which includes:
the output shaft 1 of the first motor EM1 may be selectively connected to the transmission output shaft 3 through a first motor input gear pair on one side, or may be selectively connected to the transmission output shaft 3 through a first transmission gear pair EGR1 on the other side, or may be selectively connected to the transmission output shaft 3 through a first transmission gear pair EGR1 and a second transmission gear pair EGR2 on the other side. Specifically, as a further preferable mode of the present embodiment, the first motor input gear pair includes a second gear pair GR2 located on the left side of the first clutch B18, the second gear pair GR2 includes a second driving gear 6 that is blank on the output shaft 1 of the first motor EM1 and a second driven gear 7 that is fixed on the transmission output shaft 3, and the second driving gear 6 is meshed with the second driven gear 7 correspondingly. The second gear pair GR2 is used to transmit the output power of the first electric machine EM1 to the transmission output shaft 3. Specifically, as a further preferable mode of the present embodiment, the first transmission gear pair EGR1 includes a first motor transmission gear 10 that is idle on the output shaft 1 of the first motor EM1, a second motor transmission gear 11 that is fixed on the output shaft 2 of the second motor EM2, and an output transmission gear 12 that is idle on the transmission system output shaft 3, and the output transmission gear 12 is meshed with the first motor transmission gear 10 and the second motor transmission gear 11; the first transmission gear pair EGR1 is used to transmit the output power of the first electric motor EM1 to the transmission system output shaft 3.
The technical scheme provided by the embodiment also comprises a second motor EM2, wherein the output shaft 2 of the second motor EM2 can be selectively connected with the output shaft 3 of the speed change system through second motor input gear pairs at two sides; or the transmission output shaft 3 can be selectively connected through the first transmission gear pair EGR1 and the second transmission gear pair EGR2 on the other side.
Specifically, as a further preferable aspect of the present embodiment, the second motor input gear pair includes a first gear pair GR1 located on the left side of the second clutch a17 and a third gear pair GR3 located on the right side of the second clutch a 17; the first gear pair GR1 comprises a first driving gear 4 sleeved on the output shaft 2 of the second motor EM2 and a first driven gear 5 fixed on the output shaft 3 of the speed change system, and the first driving gear 4 is correspondingly meshed with the first driven gear 5; the third gear pair GR3 includes a third driving gear 8 that is sleeved on the output shaft 2 of the second motor EM2, and a third driven gear 9 that is fixed on the output shaft 3 of the transmission system, where the third driving gear 8 is meshed with the third driven gear 9 correspondingly; the first gear pair GR1 and the third gear pair GR3 are used for transmitting the output power of the second electric motor EM2 to the transmission output shaft 3; specifically, as a further preferable scheme of the present embodiment, the second transmission gear pair EGR2 is a planetary gear transmission mechanism, which includes a sun gear 13 that is sleeved on the output shaft 3 of the speed change system and fixedly connected to the output transmission gear 12, a planet gear 14 that is meshed with the sun gear 13, a planet carrier 15 that is selectively connected to the output shaft 3 of the speed change system, and a ring gear 16 that is fixedly connected to the outside; the planetary gear transmission mechanism is used when the vehicle gets out of order, and the output power of the first motor EM1 and the second motor EM2 is jointly transmitted to the speed change system output shaft 3 through the engagement of the planet carrier 15 and the third clutch C19 to form a large speed ratio for the vehicle to get out of order.
A first clutch B18 provided on the output shaft 1 of the first electric motor EM1 and selectively engaging or disengaging the output shaft 1 of the first electric motor EM1 with or from the gear of the first electric motor input gear pair on one side, or selectively engaging or disengaging the output shaft 1 of the first electric motor EM1 with or from the gear of the first transmission gear pair EGR1 on the other side.
A second clutch a17 provided on the output shaft 2 of the second motor EM2 and selectively engaging or disengaging the output shaft 2 of the second motor EM2 with or from gears of the two-sided second motor input gear pair.
A third clutch C19 provided at the transmission output shaft 3 and selectively engaging or disengaging the transmission output shaft 3 with the one-sided second transmission gear pair EGR 2.
Specifically, as a further preferable scheme of the embodiment, the first motor EM1 and the second motor EM2 are symmetrically arranged, so that the overall mass arrangement of the speed change system is balanced, the balanced arrangement of power components on each shaft is combined, vibration and noise in running of a vehicle are reduced, running safety is guaranteed, and service life is prolonged.
Specifically, as a further preferable aspect of the present embodiment, the second gear pair GR2 is located between the first gear pair GR1 and the third gear pair GR3 in the extending direction of the transmission output shaft 3; the first clutch B18 is positioned between the second clutch A17 and the third clutch C19, so that even distribution of all power components on all shafts is further ensured, the structure is compact, the internal space is simplified, and meanwhile, the overall quality balance is ensured.
Specifically, as a further preferable scheme of the present embodiment, along the extending direction of the output shaft 3 of the speed change system, the second transmission gear pair EGR2 is located at a position farther from the first motor EM1 and the second motor EM2 than the first transmission gear pair EGR1, so as to further ensure uniform distribution of each power component on each shaft, ensure compact structure, simplify the internal space, ensure uniform overall quality, and facilitate the shifting action of the third clutch C19.
[ example 2 ]
Fig. 2 shows an embodiment 2 of a gear shifting system with a release gear according to the present invention, which is different from embodiment 1 only in that the gear shifting system further includes a third electric motor EM3, wherein an output shaft of the third electric motor EM3 is fixedly connected to the gear shifting system output shaft 3 and is coaxially arranged with the gear shifting system output shaft 3, so that the power output of the third electric motor is increased during the release process, the gear shifting process or the normal driving process, thereby increasing the power, and ensuring that the power is not interrupted during the release and gear shifting processes and the power transmission is stable.
Specifically, as a further preferable mode of this embodiment, the operating positions of the clutches in each gear of the transmission system in the 1 st and 2 nd embodiments are (as shown in the following table 1):
1) In neutral, the first clutch B is centered, the second clutch A is centered, and the third clutch C is not engaged;
2) When the gear is out of order (namely the LOW gear in table 1), the first clutch B is engaged with the gear of the first transmission gear pair on the other side, the second clutch A is centered, and the third clutch C is engaged; at the moment, the second transmission gear pair is engaged with the output shaft, and the first motor and the second motor jointly output power to be output from the output shaft;
3) In the 1 st gear, the first clutch B is engaged with the gear of the first transmission gear pair on the other side, the second clutch A is engaged with the gear of the second motor input gear pair on one side, and the third clutch C is not engaged; at the moment, the second transmission gear pair is not jointed with the output shaft, and the power output by the first motor is output together with the power output by the second motor after passing through the first transmission gear pair and is output from the output shaft through the first gear pair;
3) In the 2-gear, the first clutch B is engaged with the gear of the first motor input gear pair at one side, the second clutch A is engaged with the gear of the second motor input gear pair at one side, and the third clutch C is not engaged; at the moment, the second transmission gear pair is not jointed with the output shaft, the output power of the first motor is output from the output shaft through the second gear pair, and the output power of the second motor is output from the output shaft through the first gear pair;
4) In the 3 rd gear, the first clutch B is engaged with the gear of the first motor input gear pair at one side, the second clutch A is engaged with the gear of the second motor input gear pair at the other side, and the third clutch C is not engaged; at the moment, the second transmission gear pair is not jointed with the output shaft, the output power of the first motor is output from the output shaft through the second gear pair, and the output power of the second motor is output from the output shaft through the third gear pair;
5) In the 4 th gear, the first clutch B is engaged with the gear of the first transmission gear pair at the other side, the second clutch A is engaged with the gear of the second motor input gear pair at the other side, and the third clutch C is not engaged; at the moment, the second transmission gear pair is not jointed with the output shaft, and the power output by the first motor is output together with the power output by the second motor after passing through the first transmission gear pair and is output from the output shaft through the third gear pair.
Table 1 operating position table of clutches in each gear of a transmission system in examples 1-2
Figure 157879DEST_PATH_IMAGE002
Note that: ● Indicating the current position of each clutch; l represents left junction; r represents a right bond; indicating engagement, N indicates a neutral position (i.e., not engaged).
The operating position of each clutch in each gear of the transmission system according to embodiment 2 is the same as that of embodiment 1, except that the third electric machine EM3 in each gear always keeps outputting power through the transmission system output shaft 3.
And at least one motor is always kept to output power in the gear shifting process, so that continuous power output is realized without interruption in the gear shifting process.
It will be evident to those skilled in the art that the invention is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential characteristics thereof. The present embodiments are, therefore, to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.

Claims (9)

1. A belt out of gear transmission system, characterized by: comprising the following steps:
a first motor (EM 1), wherein an output shaft (1) of the first motor (EM 1) is selectively connected with a transmission system output shaft (3) through a first motor input gear pair, or is selectively connected with the transmission system output shaft (3) through a first transmission gear pair (EGR 1) and a second transmission gear pair (EGR 2);
a second motor (EM 2), wherein an output shaft (2) of the second motor (EM 2) can be selectively connected with a speed change system output shaft (3) through a second motor input gear pair; or the first transmission gear pair (EGR 1) and the second transmission gear pair (EGR 2) can be selectively connected with the speed change system output shaft (3);
a first clutch B (18), the first clutch B (18) being provided on the output shaft (1) of the first electric motor (EM 1) and selectively engaging or disengaging the output shaft (1) of the first electric motor (EM 1) with or from the gear of the first electric motor input gear pair, or selectively engaging or disengaging the output shaft (1) of the first electric motor (EM 1) with or from the gear of the first transmission gear pair (EGR 1);
a second clutch a (17), the second clutch a (17) being provided on the output shaft (2) of the second motor (EM 2) and selectively engaging or disengaging the output shaft (2) of the second motor (EM 2) with or from the gear of the second motor input gear pair;
a third clutch C (19), the third clutch C (19) being provided at the transmission output shaft (3) and selectively engaging or disengaging the transmission output shaft (3) with the second transmission gear pair (EGR 2);
the working positions of the clutches under each gear of the speed change system are as follows:
1) In neutral, the first clutch B is centered, the second clutch A is centered, and the third clutch C is not engaged;
2) When the gear is released, the first clutch B is engaged with a gear of the first transmission gear pair on the other side, the second clutch A is centered, and the third clutch C is engaged;
3) In the 1 st gear, the first clutch B is engaged with the gear of the first transmission gear pair on the other side, the second clutch A is engaged with the gear of the second motor input gear pair on one side, and the third clutch C is not engaged;
3) In the 2-gear, the first clutch B is engaged with the gear of the first motor input gear pair at one side, the second clutch A is engaged with the gear of the second motor input gear pair at one side, and the third clutch C is not engaged;
4) In the 3 rd gear, the first clutch B is engaged with the gear of the first motor input gear pair at one side, the second clutch A is engaged with the gear of the second motor input gear pair at the other side, and the third clutch C is not engaged;
5) In the 4 th gear, the first clutch B is engaged with the gear of the first transmission gear pair at the other side, the second clutch A is engaged with the gear of the second motor input gear pair at the other side, and the third clutch C is not engaged.
2. The out-of-gear transmission system of claim 1, wherein: the first transmission gear pair (EGR 1) comprises a first motor transmission gear (10) which is sleeved on an output shaft (1) of the first motor (EM 1), a second motor transmission gear (11) which is fixed on an output shaft (2) of the second motor (EM 2), and an output transmission gear (12) which is sleeved on an output shaft (3) of the speed change system, wherein the output transmission gear (12) is meshed with the first motor transmission gear (10) and the second motor transmission gear (11).
3. The out-of-gear transmission system of claim 2, wherein: the second transmission gear pair (EGR 2) is a planetary gear transmission mechanism, and the planetary gear transmission mechanism comprises a sun gear (13) which is sleeved on the output shaft (3) of the speed change system and fixedly connected with the output transmission gear (12), a planet wheel (14) which is externally meshed with the sun gear (13), a planet carrier (15) which can be selectively connected with the output shaft (3) of the speed change system, and a gear ring (16) which is fixedly connected with the outside.
4. A belt out of gear transmission system according to any one of claims 1-3, wherein: the first motor input gear pair comprises a second gear pair (GR 2) positioned on the left side of a first clutch B (18), the second gear pair (GR 2) comprises a second driving gear (6) which is sleeved on an output shaft (1) of a first motor (EM 1) in a hollow mode and a second driven gear (7) which is fixed on an output shaft (3) of a speed change system, and the second driving gear (6) is correspondingly meshed with the second driven gear (7).
5. The out-of-gear transmission system of any one of claim 4, wherein: the second motor input gear pair comprises a first gear pair (GR 1) positioned at the left side of the second clutch A (17) and a third gear pair (GR 3) positioned at the right side of the second clutch A (17);
the first gear pair (GR 1) comprises a first driving gear (4) which is sleeved on the output shaft (2) of the second motor (EM 2) in a hollow mode and a first driven gear (5) which is fixed on the output shaft (3) of the speed change system, and the first driving gear (4) is correspondingly meshed with the first driven gear (5);
the third gear pair (GR 3) comprises a third driving gear (8) which is sleeved on the output shaft (2) of the second motor (EM 2) in a hollow mode and a third driven gear (9) which is fixed on the output shaft (3) of the speed change system, and the third driving gear (8) is correspondingly meshed with the third driven gear (9).
6. The out-of-gear transmission system of claim 1, wherein: the first motor (EM 1) and the second motor (EM 2) are symmetrically arranged on two sides of the speed change system output shaft (3).
7. The out-of-gear transmission system of claim 5, wherein: the second gear pair (GR 2) is located between the first gear pair (GR 1) and the third gear pair (GR 3) along the extending direction of the transmission output shaft (3); the first clutch B (18) is located between the second clutch A (17) and the third clutch C (19).
8. A belt out of gear transmission system according to any one of claims 1-3, wherein: along the extending direction of the speed change system output shaft (3), the second transmission gear pair (EGR 2) is located at a position further away from the first motor (EM 1) and the second motor (EM 2) than the first transmission gear pair (EGR 1).
9. A belt out of gear transmission system according to any one of claims 1-3, wherein: the transmission system further comprises a third motor (EM 3), wherein an output shaft of the third motor (EM 3) is fixedly connected with the transmission system output shaft (3) and is coaxially arranged with the transmission system output shaft (3).
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CN113738833B true CN113738833B (en) 2023-04-21

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