Distributed drive system

Abstract

The present invention discloses a distributed drive system, including a first motor and a second motor, wherein the first motor is connected to a first output shaft through a double-row planetary gear reduction assembly, the second motor is located on one side of the double-row planetary gear reduction assembly and the first motor, and is placed in the maximum axial space of the double-row planetary gear reduction assembly and the first motor, the second motor is connected to the second output shaft through a mixed reduction assembly, and the second output shaft is coaxial with the first output shaft. The beneficial effects of the present invention are mainly reflected in: the design is exquisite, and the parallel arrangement of the first motor and the second motor can save the axial space of the drive system to the greatest extent, facilitate reasonable layout, and make the structure more compact. In addition, the second motor is located on one side of the double-row planetary gear reduction assembly and the first motor, and is placed in the maximum axial space of the double-row planetary gear reduction assembly and the first motor, which can minimize the axial occupied space and further improve the rationality of the layout.

Description

Technical Field

[0001] The present invention relates to the field of automobile technology, and in particular to a distributed drive system. Background Art

[0002] With the acceleration of the electrification process in the field of powertrain in the automotive industry, various new energy vehicles have emerged. People's requirements for vehicle safety and controllability are also getting higher and higher. Traditional "three-in-one" or "multi-in-one" electric drive systems with differentials generally require the installation of expensive LSD limited slip differentials, or the addition of mechanisms that can fully or partially lock the differentials, to achieve partial decoupling of left and right wheel torque and speed, thereby increasing the vehicle's cornering performance, passing performance and control performance, but it is always accompanied by a decrease in transmission efficiency.

[0003] For example, a pure electric two-speed transmission structure and vehicle disclosed in the authorization announcement number CN212804096U, however, the motor shafts of the first motor and the second motor in the vehicle are coaxially arranged, which results in an excessively large axial space of the powertrain, limited vehicle layout, and limited achievable speed ratios. In addition, the coaxially arranged flat axial flux motor plus a gearbox with a smaller speed ratio is expensive and has an excessively large radial dimension, which results in a reduction in ground clearance and an increase in the half-shaft swing angle, and the transmission efficiency to the wheel end is reduced accordingly. Summary of the invention

[0004] The purpose of the present invention is to overcome the deficiencies in the prior art and provide a distributed drive system.

[0005] The purpose of the present invention is achieved through the following technical solutions: A distributed drive system comprises a first motor and a second motor, wherein the first motor is connected to a first output shaft through a double-row planetary gear reduction assembly, the second motor is located on one side of the double-row planetary gear reduction assembly and the first motor, and is placed in the maximum axial space between the double-row planetary gear reduction assembly and the first motor, the second motor is connected to a second output shaft through a hybrid reduction assembly, and the second output shaft is coaxial with the first output shaft; The double-row planetary gear reduction assembly at least comprises a primary planetary row fixedly connected to the motor shaft of the first motor, the primary planetary row is provided with a secondary planetary row driving the primary planetary row, and the secondary planetary row drives the first output shaft to rotate; The first-stage planetary row comprises a first-stage sun gear I fixedly mounted on the motor shaft of the first motor, a first-stage gear ring I is sleeved on the first-stage sun gear I, a first-stage planetary gear I meshed with the first-stage gear ring I is arranged between the first-stage gear ring I and the first-stage sun gear I, the first-stage planet carrier I where the first-stage planetary gear I is located is fixedly mounted on the system, and a second-stage sun gear I is fixedly mounted on the central axis of the other side of the first-stage gear ring I; or, the first-stage planetary row comprises a first-stage sun gear I fixedly mounted on the motor shaft of the first motor, a first-stage gear ring I is sleeved on the first-stage sun gear I, and the first-stage gear ring I is fixedly mounted on the system; a first-stage planetary gear I meshed with the first-stage sun gear I is arranged between the first-stage gear ring I and the first-stage sun gear I, a first-stage planet carrier I is fixedly mounted on the first-stage planetary gear I, and a second-stage sun gear I is fixedly mounted on the central axis of the first-stage planet carrier I; The secondary planetary gear row includes the second-stage sun gear I and a second-stage ring gear I mounted thereon, the second-stage ring gear I is fixed on the system, a second-stage planetary gear I meshing with the second-stage ring gear I is provided between the second-stage ring gear I and the second-stage sun gear I, a second-stage planetary carrier I is fixed on the second-stage planetary gear I, and the second-stage planetary carrier I is fixedly connected to the first output shaft.

[0006] Preferably, the hybrid reduction assembly at least includes a transmission shaft coaxial with the second output shaft, a first driven wheel is fixedly provided at one end of the transmission shaft, a first driving wheel is fixedly provided on the motor shaft of the second motor, and a first idler wheel meshing with the first driving wheel and the first driven wheel is provided between the first driving wheel and the first driven wheel; a second-stage sun gear II is fixedly provided at the other end of the transmission shaft, a second-stage ring gear II is sleeved on the second-stage sun gear II, and the second-stage ring gear II is fixed on the system; a second-stage planetary gear II meshing with the second-stage ring gear II is provided between the second-stage ring gear II and the second-stage sun gear II, a second-stage planet carrier II is fixed on the second-stage planetary gear II, and a second output shaft is fixed on the second-stage planet carrier II.

[0007] Preferably, the mixed reduction assembly includes a transmission shaft coaxial with the second output shaft, a driven sprocket is fixedly provided at one end of the transmission shaft, a first-stage sun gear II is fixedly provided on the motor shaft of the second motor, a first-stage ring gear II is sleeved on the first-stage sun gear II, and the first-stage ring gear II is fixed on the system; a first-stage planetary gear II is provided between the first-stage ring gear II and the first-stage sun gear II, a first-stage planetary carrier II is fixedly provided on the first-stage planetary gear II, a driving sprocket is fixedly provided on the first-stage planetary carrier II, and the driving sprocket is connected to the driven sprocket by a chain; a second-stage sun gear II is fixedly provided at the other end of the transmission shaft, a second-stage sun gear II is sleeved on the second-stage sun gear II, and the second-stage ring gear II is fixed on the system; a second-stage planetary gear II meshing with the second-stage ring gear II is provided between the second-stage ring gear II and the second-stage sun gear II, a second-stage planetary carrier II is fixedly provided on the second-stage planetary carrier II, and a second output shaft is fixedly provided on the second-stage planetary carrier II.

[0008] Preferably, the mixed reduction assembly includes a transmission shaft coaxial with the second output shaft, a driven sprocket is fixedly provided at one end of the transmission shaft, a first-stage sun gear II is fixedly provided on the motor shaft of the second motor, a first-stage ring gear II is sleeved on the first-stage sun gear II, a first-stage planetary gear II is provided between the first-stage ring gear II and the first-stage sun gear II, and the first-stage planetary carrier II where the first-stage planetary gear II is located is fixed on the system; a driving sprocket is fixedly provided on the first-stage ring gear II, and the driving sprocket is connected to the driven sprocket by a chain; a second-stage sun gear II is fixedly provided at the other end of the transmission shaft, a second-stage sun gear II is sleeved on the second-stage sun gear II, and the second-stage ring gear II is fixed on the system; a second-stage planetary gear II meshing with the second-stage ring gear II and the second-stage sun gear II is provided between the second-stage ring gear II and the second-stage sun gear II, a second-stage planetary carrier II is fixedly provided on the second-stage planetary gear II, and a second output shaft is fixedly provided on the second-stage planetary carrier II.

[0009] Preferably, the first motor and the second motor are arranged side by side, and the first motor and the second motor are close to each other.

[0010] Preferably, the mixed reduction assembly includes a first-stage sun gear II fixedly mounted on the motor shaft of the second motor, a first-stage ring gear II is sleeved on the first-stage sun gear II, a first-stage planetary gear II is arranged between the first-stage ring gear II and the first-stage sun gear II, and a first-stage planetary carrier II where the first-stage planetary gear II is located is fixedly mounted on the system; a second sun gear II is fixedly mounted on the first-stage ring gear II, a second-stage ring gear II is sleeved on the second-stage sun gear II, and the second-stage ring gear II is fixedly mounted on the system; a second-stage planetary gear II meshing with the second-stage ring gear II is arranged between the second-stage ring gear II and the second-stage sun gear II, a second-stage planetary wheel carrier II is fixedly mounted on the second-stage planetary wheel II, a driving sprocket is fixedly mounted on the second-stage planetary wheel carrier II, a driven sprocket is fixedly mounted on the second output shaft, and the driving sprocket and the driven sprocket are connected by a chain.

[0011] Preferably, the mixed reduction assembly includes a first-stage sun gear II fixedly mounted on the motor shaft of the second motor, a first-stage ring gear II is sleeved on the first-stage sun gear II, the first-stage ring gear II is fixed on the system, a first-stage planetary gear II is arranged between the first-stage ring gear II and the first-stage sun gear II, and a first-stage planetary carrier II is fixed on the first-stage planetary gear II; a second sun gear II is fixedly mounted on the first-stage planetary carrier II, a second-stage ring gear II is sleeved on the second-stage sun gear II, and the second-stage ring gear II is fixed on the system; a second-stage planetary gear II is arranged between the second-stage ring gear II and the second-stage sun gear II, which is meshed with the second-stage planetary gear II, a second-stage planetary carrier II is fixedly mounted on the second-stage planetary gear II, a driving sprocket is fixedly mounted on the second-stage planetary carrier II, a driven sprocket is fixedly mounted on the second output shaft, and the driving sprocket and the driven sprocket are connected by a chain.

[0012] Preferably, the hybrid reduction assembly includes at least a first linkage shaft and a second linkage shaft arranged in parallel, a driven transmission wheel is fixedly provided on the first linkage shaft, an active transmission wheel meshing with the driven transmission wheel is fixedly provided on the second motor, a primary active connecting wheel is also fixedly provided on the first linkage shaft, a primary driven connecting wheel meshing with the primary active connecting wheel is fixedly provided on the second linkage shaft, a secondary active connecting wheel is also fixedly provided on the second linkage shaft, and a secondary driven connecting wheel meshing with the secondary active connecting wheel is fixedly provided on the second output shaft.

[0013] Preferably, the double-row planetary gear reduction assembly and the second motor are arranged side by side, and the second motor and the double-row planetary gear reduction assembly are close.

[0014] The beneficial effects of the present invention are mainly reflected in: 1. Exquisite design. The parallel arrangement of the first motor and the second motor can save the axial space of the drive system to the greatest extent, facilitate reasonable layout, and make the structure more compact. In addition, the second motor is located on one side of the double-row planetary gear reduction assembly and the first motor, and is placed in the maximum axial space of the double-row planetary gear reduction assembly and the first motor, which can minimize the axial space occupied and further improve the rationality of the layout; 2. The double-row planetary gear reduction assembly is connected in series to achieve high speed ratio transmission, less nested structure, and good manufacturing processability and assembly processability; 3. The hybrid reduction assembly can achieve reasonable speed ratio distribution and lightweight and compact structural design. The double-row planetary gear reduction assembly and hybrid reduction assembly and related half-shaft interfaces on both sides of the system can be shared, which can greatly reduce costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] The technical solution of the present invention is further described below in conjunction with the accompanying drawings: Figure 1 : A schematic structural diagram of a first preferred embodiment of the present invention; Figure 2 : A schematic structural diagram of a second preferred embodiment of the present invention; Figure 3 : A schematic structural diagram of a third preferred embodiment of the present invention; Figure 4 : A schematic structural diagram of a fourth preferred embodiment of the present invention; Figure 5 : A schematic structural diagram of a fifth preferred embodiment of the present invention; Figure 6 : A schematic structural diagram of a sixth preferred embodiment of the present invention; Figure 7 : A schematic structural diagram of a seventh preferred embodiment of the present invention; Figure 8 : A schematic structural diagram of an eighth preferred embodiment of the present invention; Fig. 9 : A schematic structural diagram of the ninth preferred embodiment of the present invention. DETAILED DESCRIPTION

[0016] The present invention will be described in detail below in conjunction with the specific embodiments shown in the accompanying drawings. However, these embodiments are not limited to the present invention, and any structural, methodological, or functional changes made by a person skilled in the art based on these embodiments are all included in the protection scope of the present invention.

[0017] The present invention will be described in detail below with reference to the accompanying drawings and in conjunction with embodiments.

[0018] like Figures 1 to 9As shown, the present invention discloses a distributed drive system, including a first motor 1 and a second motor 2 arranged in parallel. The parallel arrangement of the first motor 1 and the second motor 2 can save the axial space of the drive system to the greatest extent, facilitate reasonable layout, and make the structure more compact. The second motor 2 is located on one side of the double-row planetary gear reduction assembly 3 and the first motor 1, and is placed in the maximum axial space of the double-row planetary gear reduction assembly 3 and the first motor 1. The second motor 2 is close to the first motor 1 and the double-row planetary gear reduction assembly 3. The above design can minimize the axial occupied space and further improve the rationality of the layout. The second motor 2 is connected to the second output shaft 6 through the mixed reduction assembly 5. The second output shaft 6 is coaxial with the first output shaft 4, and both are connected to the wheel hub respectively. In the above, the double-row planetary gear reduction assembly 3 includes at least a first-stage planetary row fixedly connected to the motor shaft of the first motor 1, and the first-stage planetary row is provided with a second-stage planetary row that drives the first output shaft 4 to rotate. The double-row planetary gear reduction assembly 3 adopts a single series connection, which can realize a large speed ratio transmission, less nested structure, and will have good manufacturing processability and assembly processability. The hybrid reduction assembly 5 can achieve reasonable speed ratio distribution and lightweight and compact structural design. The double-row planetary gear reduction assembly 3 and the hybrid reduction assembly and related half-shaft interfaces on both sides of the system can be shared, which can greatly reduce costs.

[0019] like Figure 1As shown, it is a first preferred embodiment of the present invention, the first-stage planetary row includes a first-stage sun gear 131 fixedly mounted on the motor shaft of the first motor 1, a first-stage ring gear 132 is sleeved on the first-stage sun gear 131, a first-stage planetary gear 133 meshing with the first-stage ring gear 132 is provided between the first-stage ring gear 132 and the first-stage sun gear 131, the first-stage planetary carrier 134 where the first-stage planetary gear 133 is located is fixedly mounted on the housing or other components of the system, and a second-stage sun gear 135 is fixedly mounted on the central axis of the other side of the first-stage ring gear 132; the second-stage planetary row includes the second-stage sun gear 135 and a second-stage ring gear 136 sleeved thereon, the second-stage ring gear 136 is fixedly mounted on the housing or other components of the system, a second-stage planetary gear 137 meshing with the second-stage ring gear 136 is provided between the second-stage ring gear 136 and the second-stage sun gear 135, a second-stage planetary carrier 138 is fixedly mounted on the second-stage planetary gear 137, and the second-stage planetary carrier 138 is fixedly connected to the first output shaft 4. The hybrid reduction assembly 5 at least includes a transmission shaft 51 coaxial with the second output shaft 6, a first driven wheel 52 is fixedly provided at one end of the transmission shaft 51, a first driving wheel 53 is fixedly provided on the motor shaft of the second motor 2, and a first idler wheel 54 meshing with the first driving wheel 53 and the first driven wheel 52 is provided between the first driving wheel 53 and the first driven wheel 52; a second-stage sun gear II 55 is fixedly provided at the other end of the transmission shaft 51, a second-stage ring gear II 56 is sleeved on the second-stage sun gear II 55, a second-stage planetary gear II 57 meshing with the second-stage ring gear II 56 and the second-stage sun gear II 55 is provided between the second-stage ring gear II 56 and the second-stage sun gear II 55, a second-stage planet carrier II 58 is fixedly provided on the second-stage planetary gear II 57, and a second output shaft 6 is fixedly provided on the second-stage planetary carrier II 58.

[0020] The working process of the first preferred embodiment of the present invention is briefly described below: the first motor 1 is started, and drives the second-stage sun gear I35 to rotate through the first-stage sun gear I31, the first-stage planetary gear I33 and the first-stage ring gear I32 in sequence, and the second-stage sun gear I35 drives the first output shaft 4 to rotate through the second-stage planetary gear I37 and the second-stage planetary carrier I38 in sequence. At the same time, the second motor 2 is started, and drives the second output shaft 6 to rotate through the first driving wheel 53, the first idler wheel 54, the first driven wheel 52, the transmission shaft 51, the second-stage sun gear II55, the second-stage planetary gear II57 and the second-stage planetary carrier II58 in sequence.

[0021] like Figure 2As shown, it is a second preferred embodiment of the present invention, the first-stage planetary row includes a first-stage sun gear 131 fixedly mounted on the motor shaft of the first motor 1, the first-stage sun gear 131 is sleeved with a first-stage ring gear 132, and the first-stage ring gear 132 is fixedly mounted on the housing or other components of the system; a first-stage planetary gear 133 meshing with the first-stage sun gear 131 is provided between the first-stage ring gear 132 and the first-stage sun gear 131, a first-stage planetary carrier 134 is fixedly mounted on the first-stage planetary gear 133, and a second-stage sun gear 135 is fixedly mounted on the central axis of the first-stage planetary carrier 134; the second-stage planetary row includes the second-stage sun gear 135 and a second-stage ring gear 136 sleeved thereon, the second-stage ring gear 136 is fixedly mounted on the housing or other components of the system, a second-stage planetary gear 137 meshing with the second-stage sun gear 137 is provided between the second-stage ring gear 136 and the second-stage sun gear 135, a second-stage planetary carrier 138 is fixedly mounted on the second-stage planetary gear 137, and the second-stage planetary carrier 138 is fixedly connected to the first output shaft 4. The hybrid reduction assembly 5 at least includes a transmission shaft 51 coaxial with the second output shaft 6, a first driven wheel 52 is fixedly provided at one end of the transmission shaft 51, a first driving wheel 53 is fixedly provided on the motor shaft of the second motor 2, and a first idler wheel 54 meshing with the first driving wheel 53 and the first driven wheel 52 is provided between the first driving wheel 53 and the first driven wheel 52; a second-stage sun gear II 55 is fixedly provided at the other end of the transmission shaft 51, a second-stage ring gear II 56 is sleeved on the second-stage sun gear II 55, a second-stage planetary gear II 57 meshing with the second-stage ring gear II 56 and the second-stage sun gear II 55 is provided between the second-stage ring gear II 56 and the second-stage sun gear II 55, a second-stage planet carrier II 58 is fixedly provided on the second-stage planetary gear II 57, and a second output shaft 6 is fixedly provided on the second-stage planetary carrier II 58.

[0022] The working process of the second preferred embodiment of the present invention is briefly described below: the first motor 1 is started, and drives the second-stage sun gear I35 to rotate through the first-stage sun gear I31, the first-stage planetary gear I33 and the first-stage planetary carrier I34 in turn, and the second-stage sun gear I35 drives the first output shaft 4 to rotate through the second-stage planetary gear I37 and the second-stage planetary carrier I38 in turn. At the same time, the second motor 2 is started, and drives the second output shaft 6 to rotate through the first driving wheel 53, the first idler wheel 54, the first driven wheel 52, the transmission shaft 51, the second-stage sun gear II55, the second-stage planetary gear II57 and the second-stage planetary carrier II58 in turn.

[0023] like Figure 3As shown, it is a third preferred embodiment of the present invention, the first-stage planetary row includes a first-stage sun gear 131 fixedly mounted on the motor shaft of the first motor 1, the first-stage sun gear 131 is sleeved with a first-stage ring gear 132, and the first-stage ring gear 132 is fixedly mounted on the housing or other components of the system; a first-stage planetary gear 133 meshing with the first-stage sun gear 131 is provided between the first-stage ring gear 132 and the first-stage sun gear 131, a first-stage planetary carrier 134 is fixedly mounted on the first-stage planetary gear 133, and a second-stage sun gear 135 is fixedly mounted on the central axis of the first-stage planetary carrier 134; the second-stage planetary row includes the second-stage sun gear 135 and a second-stage ring gear 136 sleeved thereon, the second-stage ring gear 136 is fixedly mounted on the housing or other components of the system, a second-stage planetary gear 137 meshing with the second-stage sun gear 137 is provided between the second-stage ring gear 136 and the second-stage sun gear 135, a second-stage planetary carrier 138 is fixedly mounted on the second-stage planetary gear 137, and the second-stage planetary carrier 138 is fixedly connected to the first output shaft 4. The hybrid reduction assembly 5 includes a transmission shaft 51 coaxial with the second output shaft 6, a driven sprocket 511 is fixedly arranged at one end of the transmission shaft 51, a first-stage sun gear II 50 is fixedly arranged on the motor shaft of the second motor 2, a first-stage ring gear II 501 is sleeved on the first-stage sun gear II 50, and the first-stage ring gear II 501 is fixedly arranged on the housing or other components of the system; a first-stage planetary gear II 502 is arranged between the first-stage ring gear II 501 and the first-stage sun gear II 50, a first-stage planetary carrier II 503 is fixedly arranged on the first-stage planetary carrier II 503 A driving sprocket 504 is fixedly provided, and the driving sprocket 504 is connected to the driven sprocket 511 by a chain 505; the other end of the transmission shaft 51 is fixedly provided with a second-stage sun gear Ⅱ55, and a second-stage ring gear Ⅱ56 is sleeved on the second-stage sun gear Ⅱ55, and the second-stage ring gear Ⅱ56 is fixedly provided on the housing or other components of the system, and a second-stage planetary gear Ⅱ57 meshing with the second-stage ring gear Ⅱ56 and the second-stage sun gear Ⅱ55 is provided between them, and a second-stage planetary carrier Ⅱ58 is fixedly provided on the second-stage planetary carrier Ⅱ58, and a second output shaft 6 is fixedly provided on the second-stage planetary carrier Ⅱ58.

[0024] The working process of the third preferred embodiment of the present invention is briefly described below: the first motor 1 is started, and drives the second-stage sun gear I35 to rotate through the first-stage sun gear I31, the first-stage planetary gear I33 and the first-stage planetary carrier I34 in turn, and the second-stage sun gear I35 drives the first output shaft 4 to rotate through the second-stage planetary gear I37 and the second-stage planetary carrier I38 in turn. At the same time, the second motor 2 is started, and drives the second output shaft 6 to rotate through the first-stage sun gear II50, the first-stage planetary gear II502, the first-stage planetary carrier II503, the driving sprocket 504, the chain 505, the driven sprocket 511, the transmission shaft 51, the second-stage sun gear II55, the second-stage planetary gear II57 and the second-stage planetary carrier II58 in turn.

[0025] like Figure 4As shown, it is a fourth preferred embodiment of the present invention, the first-stage planetary row includes a first-stage sun gear 131 fixedly mounted on the motor shaft of the first motor 1, a first-stage ring gear 132 is sleeved on the first-stage sun gear 131, a first-stage planetary gear 133 meshing with the first-stage ring gear 132 is provided between the first-stage ring gear 132 and the first-stage sun gear 131, the first-stage planetary carrier 134 where the first-stage planetary gear 133 is located is fixedly mounted on the housing or other components of the system, and a second-stage sun gear 135 is fixedly mounted on the central axis of the other side of the first-stage ring gear 132; the second-stage planetary row includes the second-stage sun gear 135 and a second-stage ring gear 136 sleeved thereon, the second-stage ring gear 136 is fixedly mounted on the housing or other components of the system, a second-stage planetary gear 137 meshing with the second-stage ring gear 136 is provided between the second-stage ring gear 136 and the second-stage sun gear 135, a second-stage planetary carrier 138 is fixedly mounted on the second-stage planetary gear 137, and the second-stage planetary carrier 138 is fixedly connected to the first output shaft 4. The hybrid reduction assembly 5 comprises a transmission shaft 51 coaxial with the second output shaft 6, a driven sprocket 511 is fixedly arranged at one end of the transmission shaft 51, a first-stage sun gear II 50 is fixedly arranged on the motor shaft of the second motor 2, a first-stage ring gear II 501 is sleeved on the first-stage sun gear II 50, a first-stage planetary gear II 502 is arranged between the first-stage ring gear II 501 and the first-stage sun gear II 50, and a first-stage planetary carrier II 503 where the first-stage planetary gear II 502 is located is fixedly arranged on the housing or other components of the system; a driving sprocket 5 is fixedly arranged on the first-stage ring gear II 501 04, the driving sprocket 504 is connected to the driven sprocket 511 by a chain 505; the other end of the transmission shaft 51 is fixedly provided with a second-stage sun gear Ⅱ55, and the second-stage sun gear Ⅱ55 is sleeved with a second-stage ring gear Ⅱ56, and the second-stage ring gear Ⅱ56 is fixedly provided on the housing or other components of the system, and a second-stage planetary gear Ⅱ57 meshing with the second-stage ring gear Ⅱ56 and the second-stage sun gear Ⅱ55 is provided between them, and a second-stage planetary carrier Ⅱ58 is fixedly provided on the second-stage planetary carrier Ⅱ58, and a second output shaft 6 is fixedly provided on the second-stage planetary carrier Ⅱ58.

[0026] The working process of the fourth preferred embodiment of the present invention is briefly described below: the first motor 1 is started, and drives the second-stage sun gear I35 to rotate through the first-stage sun gear I31, the first-stage planetary gear I33 and the first-stage ring gear I32 in sequence, and the second-stage sun gear I35 drives the first output shaft 4 to rotate through the second-stage planetary gear I37 and the second-stage planet carrier I38 in sequence. At the same time, the second motor 2 is started, and drives the second output shaft 6 to rotate through the first-stage sun gear II50, the first-stage planetary gear II502, the first-stage ring gear II501, the driving sprocket 504, the chain 505, the driven sprocket 511, the transmission shaft 51, the second-stage sun gear II55, the second-stage planetary gear II57 and the second-stage planet carrier II58 in sequence.

[0027] like Figure 5 As shown, it is the fifth preferred embodiment of the present invention, the first-stage planetary row includes a first-stage sun gear 131 fixedly mounted on the motor shaft of the first motor 1, a first-stage ring gear 132 is sleeved on the first-stage sun gear 131, a first-stage planetary gear 133 meshing with the first-stage ring gear 132 is provided between the first-stage ring gear 132 and the first-stage sun gear 131, the first-stage planetary carrier 134 where the first-stage planetary gear 133 is located is fixedly mounted on the housing or other components of the system, and a second-stage sun gear 135 is fixedly mounted on the central axis of the other side of the first-stage ring gear 132; the second-stage planetary row includes the second-stage sun gear 135 and a second-stage ring gear 136 sleeved thereon, the second-stage ring gear 136 is fixedly mounted on the housing or other components of the system, a second-stage planetary gear 137 meshing with the second-stage ring gear 136 is provided between the second-stage ring gear 136 and the second-stage sun gear 135, a second-stage planetary carrier 138 is fixedly mounted on the second-stage planetary gear 137, and the second-stage planetary carrier 138 is fixedly connected to the first output shaft 4. The hybrid reduction assembly 5 includes a transmission shaft 51 coaxial with the second output shaft 6, a driven sprocket 511 is fixedly arranged at one end of the transmission shaft 51, a first-stage sun gear II 50 is fixedly arranged on the motor shaft of the second motor 2, a first-stage ring gear II 501 is sleeved on the first-stage sun gear II 50, and the first-stage ring gear II 501 is fixedly arranged on the housing or other components of the system; a first-stage planetary gear II 502 is arranged between the first-stage ring gear II 501 and the first-stage sun gear II 50, a first-stage planetary carrier II 503 is fixedly arranged on the first-stage planetary carrier II 503 A driving sprocket 504 is fixedly provided, and the driving sprocket 504 is connected to the driven sprocket 511 by a chain 505; the other end of the transmission shaft 51 is fixedly provided with a second-stage sun gear Ⅱ55, and a second-stage ring gear Ⅱ56 is sleeved on the second-stage sun gear Ⅱ55, and the second-stage ring gear Ⅱ56 is fixedly provided on the housing or other components of the system, and a second-stage planetary gear Ⅱ57 meshing with the second-stage ring gear Ⅱ56 and the second-stage sun gear Ⅱ55 is provided between them, and a second-stage planetary carrier Ⅱ58 is fixedly provided on the second-stage planetary carrier Ⅱ58, and a second output shaft 6 is fixedly provided on the second-stage planetary carrier Ⅱ58.

[0028] The working process of the fifth preferred embodiment of the present invention is briefly described below: the first motor 1 is started, and drives the second-stage sun gear I35 to rotate through the first-stage sun gear I31, the first-stage planetary gear I33 and the first-stage ring gear I32 in sequence, and the second-stage sun gear I35 drives the first output shaft 4 to rotate through the second-stage planetary gear I37 and the second-stage planetary carrier I38 in sequence. At the same time, the second motor 2 is started, and drives the second output shaft 6 to rotate through the first-stage sun gear II50, the first-stage planetary gear II502, the first-stage planetary carrier II503, the driving sprocket 504, the chain 505, the driven sprocket 511, the transmission shaft 51, the second-stage sun gear II55, the second-stage planetary gear II57 and the second-stage planetary carrier II58 in sequence. In the above first to fifth preferred embodiments, the first motor and the second motor 2 are arranged side by side, and the first motor 1 and the second motor 2 are close.

[0029] like Figure 6As shown, it is the sixth preferred embodiment of the present invention, the first-stage planetary row includes a first-stage sun gear 131 fixedly mounted on the motor shaft of the first motor 1, a first-stage ring gear 132 is sleeved on the first-stage sun gear 131, a first-stage planetary gear 133 meshing with the first-stage ring gear 132 is provided between the first-stage ring gear 132 and the first-stage sun gear 131, the first-stage planetary carrier 134 where the first-stage planetary gear 133 is located is fixedly mounted on the housing or other components of the system, and a second-stage sun gear 135 is fixedly mounted on the central axis of the other side of the first-stage ring gear 132; the second-stage planetary row includes the second-stage sun gear 135 and a second-stage ring gear 136 sleeved thereon, the second-stage ring gear 136 is fixedly mounted on the housing or other components of the system, a second-stage planetary gear 137 meshing with the second-stage ring gear 136 is provided between the second-stage ring gear 136 and the second-stage sun gear 135, a second-stage planetary carrier 138 is fixedly mounted on the second-stage planetary gear 137, and the second-stage planetary carrier 138 is fixedly connected to the first output shaft 4. The hybrid reduction assembly 5 includes a first-stage sun gear II 50 fixedly mounted on the motor shaft of the second motor 2, a first-stage ring gear II 501 sleeved on the first-stage sun gear II 50, a first-stage planetary gear II 502 disposed between the first-stage ring gear II 501 and the first-stage sun gear II 50, and a first-stage planetary carrier II 503 where the first-stage planetary gear II 502 is located fixedly mounted on the housing or other components of the system; a second sun gear II 55 is fixedly mounted on the first-stage ring gear II 501, and a first-stage ring gear II 502 sleeved on the second-stage sun gear II 55 The second-stage ring gear II 56 is fixedly mounted on the housing or other components of the system; a second-stage planetary gear II 57 meshing with the second-stage sun gear II 55 is provided between the second-stage ring gear II 56 and the second-stage sun gear II 55, a second-stage planetary gear carrier II 58 is fixedly mounted on the second-stage planetary gear II 57, a driving sprocket 504 is fixedly mounted on the second-stage planetary gear carrier II 58, a driven sprocket 511 is fixedly mounted on the second output shaft 6, and the driving sprocket 504 and the driven sprocket 511 are connected via a chain 505.

[0030] The working process of the sixth preferred embodiment of the present invention is briefly described below: the first motor 1 is started, and drives the second-stage sun gear I35 to rotate through the first-stage sun gear I31, the first-stage planetary gear I33 and the first-stage ring gear I32 in sequence, and the second-stage sun gear I35 drives the first output shaft 4 to rotate through the second-stage planetary gear I37 and the second-stage planetary carrier I38 in sequence. At the same time, the second motor 2 is started, and drives the second output shaft 6 to rotate through the first-stage sun gear II50, the first-stage planetary gear II502, the first-stage ring gear II501, the second-stage sun gear II55, the second-stage planetary gear II57, the second-stage planetary carrier II58, the driving sprocket 504, the chain 505 and the driven sprocket 511 in sequence.

[0031] like Figure 7As shown, it is the seventh preferred embodiment of the present invention, the first-stage planetary row includes a first-stage sun gear 131 fixedly mounted on the motor shaft of the first motor 1, the first-stage sun gear 131 is sleeved with a first-stage ring gear 132, and the first-stage ring gear 132 is fixedly mounted on the housing or other components of the system; a first-stage planetary gear 133 meshing with the first-stage sun gear 131 is provided between the first-stage ring gear 132 and the first-stage sun gear 131, a first-stage planetary carrier 134 is fixedly mounted on the first-stage planetary gear 133, and a second-stage sun gear 135 is fixedly mounted on the central axis of the first-stage planetary carrier 134; the second-stage planetary row includes the second-stage sun gear 135 and a second-stage ring gear 136 sleeved thereon, the second-stage ring gear 136 is fixedly mounted on the housing or other components of the system, a second-stage planetary gear 137 meshing with the second-stage sun gear 137 is provided between the second-stage ring gear 136 and the second-stage sun gear 135, a second-stage planetary carrier 138 is fixedly mounted on the second-stage planetary gear 137, and the second-stage planetary carrier 138 is fixedly connected to the first output shaft 4. The hybrid reduction assembly 5 includes a first-stage sun gear II 50 fixedly mounted on the motor shaft of the second motor 2, a first-stage ring gear II 501 sleeved on the first-stage sun gear II 50, the first-stage ring gear II 501 fixedly mounted on the housing or other components of the system, a first-stage planetary gear II 502 is arranged between the first-stage ring gear II 501 and the first-stage sun gear II 50, a first-stage planetary carrier II 503 fixedly mounted on the first-stage planetary gear II 502; a second sun gear II 55 fixedly mounted on the first-stage planetary carrier II 503, and a second sun gear II 56 fixedly mounted on the second-stage sun gear II 57. A second-stage ring gear II56 is sleeved on the positive gear II55, and the second-stage ring gear II56 is fixed on the housing or other components of the system; a second-stage planetary gear II57 meshing with the second-stage sun gear II55 is provided between the second-stage ring gear II56 and the second-stage sun gear II55, a second-stage planetary carrier II58 is fixed on the second-stage planetary gear II57, a driving sprocket 504 is fixed on the second-stage planetary carrier II58, a driven sprocket 511 is fixed on the second output shaft 6, and the driving sprocket 504 and the driven sprocket 511 are connected by a chain 505.

[0032] The working process of the seventh preferred embodiment of the present invention is briefly described below: the first motor 1 is started, and drives the second-stage sun gear I35 to rotate through the first-stage sun gear I31, the first-stage planetary gear I33 and the first-stage planetary carrier I34 in turn, and the second-stage sun gear I35 drives the first output shaft 4 to rotate through the second-stage planetary gear I37 and the second-stage planetary carrier I38 in turn. At the same time, the second motor 2 is started, and drives the second output shaft 6 to rotate through the first-stage sun gear II50, the first-stage planetary gear II502, the first-stage planetary carrier II503, the second-stage sun gear II55, the second-stage planetary gear II57, the second-stage planetary carrier II58, the driving sprocket 504, the chain 505 and the driven sprocket 511 in turn.

[0033] like Figure 8 As shown, it is the eighth preferred embodiment of the present invention, the first-stage planetary row includes a first-stage sun gear 131 fixedly mounted on the motor shaft of the first motor 1, a first-stage ring gear 132 is sleeved on the first-stage sun gear 131, a first-stage planetary gear 133 meshing with the first-stage ring gear 132 is provided between the first-stage ring gear 132 and the first-stage sun gear 131, the first-stage planetary carrier 134 where the first-stage planetary gear 133 is located is fixedly mounted on the housing or other components of the system, and a second-stage sun gear 135 is fixedly mounted on the central axis of the other side of the first-stage ring gear 132; the second-stage planetary row includes the second-stage sun gear 135 and a second-stage ring gear 136 sleeved thereon, the second-stage ring gear 136 is fixedly mounted on the housing or other components of the system, a second-stage planetary gear 137 meshing with the second-stage ring gear 136 is provided between the second-stage ring gear 136 and the second-stage sun gear 135, a second-stage planetary carrier 138 is fixedly mounted on the second-stage planetary gear 137, and the second-stage planetary carrier 138 is fixedly connected to the first output shaft 4. The hybrid reduction assembly 5 includes at least a first linkage shaft 59 and a second linkage shaft 591 arranged in parallel, a driven transmission wheel 592 is fixedly provided on the first linkage shaft 59, an active transmission wheel 593 meshing with the driven transmission wheel 592 is fixedly provided on the second motor 2, a primary active connecting wheel 594 is also fixedly provided on the first linkage shaft 59, a primary driven connecting wheel 595 meshing with the primary active connecting wheel 594 is fixedly provided on the second linkage shaft 591, a secondary active connecting wheel 596 is also fixedly provided on the second linkage shaft 591, and a secondary driven connecting wheel 597 meshing with the secondary active connecting wheel 596 is fixedly provided on the second output shaft 6.

[0034] The working process of the eighth preferred embodiment of the present invention is briefly described below: the first motor 1 is started, and drives the second-stage sun gear 135 to rotate through the first-stage sun gear 131, the first-stage planetary gear 133 and the first-stage ring gear 132 in sequence, and the second-stage sun gear 135 drives the first output shaft 4 to rotate through the second-stage planetary gear 137 and the second-stage planetary carrier 138 in sequence. At the same time, the second motor 2 is started, and drives the second output shaft 6 to rotate through the active transmission wheel 593, the driven transmission wheel 592, the first-stage planetary carrier II 503, the first linkage shaft 59, the first-stage active connecting wheel 594, the first-stage driven connecting wheel 595, the second linkage shaft 591, the second-stage active connecting wheel 596 and the second-stage driven connecting wheel 597 in sequence.

[0035] like Fig. 9As shown, it is the ninth preferred embodiment of the present invention, the first-stage planetary row includes a first-stage sun gear 131 fixedly mounted on the motor shaft of the first motor 1, the first-stage sun gear 131 is sleeved with a first-stage ring gear 132, and the first-stage ring gear 132 is fixedly mounted on the housing or other components of the system; a first-stage planetary gear 133 meshing with the first-stage sun gear 131 is provided between the first-stage ring gear 132 and the first-stage sun gear 131, a first-stage planetary carrier 134 is fixedly mounted on the first-stage planetary gear 133, and a second-stage sun gear 135 is fixedly mounted on the central axis of the first-stage planetary carrier 134; the second-stage planetary row includes the second-stage sun gear 135 and a second-stage ring gear 136 sleeved thereon, the second-stage ring gear 136 is fixedly mounted on the housing or other components of the system, a second-stage planetary gear 137 meshing with the second-stage sun gear 137 is provided between the second-stage ring gear 136 and the second-stage sun gear 135, a second-stage planetary carrier 138 is fixedly mounted on the second-stage planetary gear 137, and the second-stage planetary carrier 138 is fixedly connected to the first output shaft 4. The hybrid reduction assembly 5 includes at least a first linkage shaft 59 and a second linkage shaft 591 arranged in parallel, a driven transmission wheel 592 is fixedly provided on the first linkage shaft 59, an active transmission wheel 593 meshing with the driven transmission wheel 592 is fixedly provided on the second motor 2, a primary active connecting wheel 594 is also fixedly provided on the first linkage shaft 59, a primary driven connecting wheel 595 meshing with the primary active connecting wheel 594 is fixedly provided on the second linkage shaft 591, a secondary active connecting wheel 596 is also fixedly provided on the second linkage shaft 591, and a secondary driven connecting wheel 597 meshing with the secondary active connecting wheel 596 is fixedly provided on the second output shaft 6.

[0036] The working process of the ninth preferred embodiment of the present invention is briefly described below: the first motor 1 is started, and drives the second-stage sun gear 135 to rotate through the first-stage sun gear 131, the first-stage planetary gear 133 and the first-stage planetary carrier 134 in turn, and the second-stage sun gear 135 drives the first output shaft 4 to rotate through the second-stage planetary gear 137 and the second-stage planetary carrier 138 in turn. At the same time, the second motor 2 is started, and drives the first output shaft 4 through the active transmission wheel 593, the driven transmission wheel 592, the first-stage planetary carrier 134 in turn. 503, the first linkage shaft 59, the primary active connecting wheel 594, the primary driven connecting wheel 595, the second linkage shaft 591, the secondary active connecting wheel 596 and the secondary driven connecting wheel 597 drive the second output shaft 6 to rotate. In the sixth to ninth preferred embodiments, the double-row planetary gear reduction assembly 3 and the second motor 2 are arranged side by side, and the second motor 2 and the double-row planetary gear reduction assembly 3 are close.

[0037] It should be understood that although this specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each implementation mode may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

[0038] The series of detailed descriptions listed above are only specific descriptions of feasible implementation methods of the present invention. They are not intended to limit the scope of protection of the present invention. Any equivalent implementation methods or changes that do not deviate from the technical spirit of the present invention should be included in the scope of protection of the present invention.

Claims

1. Distributed drive system, characterized by: The invention comprises a first motor (1) and a second motor (2), wherein the first motor (1) is connected to a first output shaft (4) via a double-row planetary gear reduction assembly (3), the second motor (2) is located on one side of the double-row planetary gear reduction assembly (3) and the first motor (1), and is placed in the maximum axial space between the double-row planetary gear reduction assembly (3) and the first motor (1), the second motor (2) is connected to a second output shaft (6) via a mixed reduction assembly (5), and the second output shaft (6) is coaxial with the first output shaft (4); the double-row planetary gear reduction assembly (3) comprises at least a first-stage planetary gear row fixedly connected to the motor shaft of the first motor (1), the first-stage planetary gear row is provided with a second-stage planetary gear row for transmission therewith, and the second-stage planetary gear row drives the first output shaft (4) to rotate; The first-stage planetary gear train comprises a first-stage sun gear I (31) fixedly mounted on the motor shaft of the first motor (1); a first-stage ring gear I (32) is sleeved on the first-stage sun gear I (31); a first-stage planetary gear I (33) is disposed between the first-stage ring gear I (32) and the first-stage sun gear I (31) and meshed with the first-stage planetary gear I (33); the first-stage planetary carrier I (34) on which the first-stage planetary gear I (33) is located is fixedly mounted on the system; a second-stage sun gear I (35) is fixedly mounted on the central axis of the other side of the first-stage ring gear I (32); or, the first-stage planetary gear train comprises a first-stage sun gear I (31) and a second-stage sun gear I (35); The first-stage planetary gear train comprises a first-stage sun gear I (31) fixedly mounted on the motor shaft of the first motor (1); a first-stage ring gear I (32) is sleeved on the first-stage sun gear I (31); the first-stage ring gear I (32) is fixedly mounted on the system; a first-stage planetary gear I (33) meshing with the first-stage ring gear I (32) is arranged between the first-stage sun gear I (31); a first-stage planetary carrier I (34) is fixedly mounted on the first-stage planetary gear I (33); and a second-stage sun gear I (35) is fixedly mounted on the central axis of the first-stage planetary carrier I (34); The secondary planetary gear train comprises a second-stage sun gear I (35) and a second-stage ring gear I (36) sleeved thereon, wherein the second-stage ring gear I (36) is fixedly mounted on the system, a second-stage planetary gear I (37) meshing with the second-stage sun gear I (35) is provided between the second-stage ring gear I (36) and the second-stage sun gear I (35), a second-stage planetary carrier I (38) is fixedly mounted on the second-stage planetary gear I (37), and the second-stage planetary carrier I (38) is fixedly connected to the first output shaft (4).

2. The distributed drive system according to claim 1, characterized in that: The hybrid reduction assembly (5) comprises at least a transmission shaft (51) coaxial with the second output shaft (6); a first driven wheel (52) is fixedly provided at one end of the transmission shaft (51); a first driving wheel (53) is fixedly provided on the motor shaft of the second motor (2); a first idler wheel (54) meshing with the first driving wheel (53) and the first driven wheel (52) is provided between the first driving wheel (53) and the first driven wheel (52); a second-stage sun gear II (55) is fixedly provided at the other end of the transmission shaft (51); a second-stage ring gear II (56) is sleeved on the second-stage sun gear II (55); a second-stage planetary gear II (57) meshing with the second-stage ring gear II (56) and the second-stage sun gear II (55) is provided between the second-stage ring gear II (56) and the second-stage sun gear II (55); a second-stage planetary carrier II (58) is fixedly provided on the second-stage planetary gear II (57); and a second output shaft (6) is fixedly provided on the second-stage planetary carrier II (58).

3. The distributed drive system according to claim 1, characterized in that: The hybrid reduction assembly (5) comprises a transmission shaft (51) coaxial with the second output shaft (6), a driven sprocket (511) being fixedly provided at one end of the transmission shaft (51), a first-stage sun gear II (50) being fixedly provided on the motor shaft of the second motor (2), a first-stage ring gear II (501) being sleeved on the first-stage sun gear II (50), and the first-stage ring gear II (501) being fixedly provided on the system; a first-stage planetary gear II (502) being provided between the first-stage ring gear II (501) and the first-stage sun gear II (50), a first-stage planetary carrier II (503) being fixedly provided on the first-stage planetary gear II (502), and the first-stage A driving sprocket (504) is fixedly provided on the planet carrier II (503), and the driving sprocket (504) is connected to the driven sprocket (511) via a chain (505); a second-stage sun gear II (55) is fixedly provided on the other end of the transmission shaft (51), a second-stage ring gear II (56) is sleeved on the second-stage sun gear II (55), a second-stage planetary gear II (57) meshing with the second-stage ring gear II (56) and the second-stage sun gear II (55) is provided between the second-stage ring gear II (56) and the second-stage sun gear II (55), a second-stage planetary carrier II (58) is fixedly provided on the second-stage planetary gear II (57), and a second output shaft (6) is fixedly provided on the second-stage planetary carrier II (58).

4. The distributed drive system according to claim 1, characterized in that: The hybrid reduction assembly (5) comprises a transmission shaft (51) coaxial with the second output shaft (6), a driven sprocket (511) being fixedly arranged at one end of the transmission shaft (51), a first-stage sun gear II (50) being fixedly arranged on the motor shaft of the second motor (2), a first-stage ring gear II (501) being sleeved on the first-stage sun gear II (50), a first-stage planetary gear II (502) being arranged between the first-stage ring gear II (501) and the first-stage sun gear II (50), and the first-stage planetary carrier II (503) on which the first-stage planetary gear II (502) is located being fixedly arranged on the system; the first-stage ring gear II (501) ) is fixedly provided with a driving sprocket (504), and the driving sprocket (504) is connected to the driven sprocket (511) via a chain (505); a second-stage sun gear II (55) is fixedly provided at the other end of the transmission shaft (51), a second-stage ring gear II (56) is sleeved on the second-stage sun gear II (55), a second-stage planetary gear II (57) meshing with the second-stage ring gear II (56) and the second-stage sun gear II (55) is provided between the second-stage ring gear II (56) and the second-stage sun gear II (55), a second-stage planetary carrier II (58) is fixedly provided on the second-stage planetary gear II (57), and a second output shaft (6) is fixedly provided on the second-stage planetary carrier II (58).

5. The distributed drive system according to any one of claims 1 to 4, characterized in that: The first motor (1) and the second motor (2) are arranged side by side, and the first motor (1) and the second motor (2) are close to each other.

6. The distributed drive system according to claim 1, characterized in that: The hybrid reduction assembly (5) comprises a first-stage sun gear II (50) fixedly mounted on the motor shaft of the second motor (2); a first-stage ring gear II (501) is sleeved on the first-stage sun gear II (50); a first-stage planetary gear II (502) is arranged between the first-stage ring gear II (501) and the first-stage sun gear II (50); a first-stage planetary carrier II (503) on which the first-stage planetary gear II (502) is located is fixedly mounted on the system; a second sun gear II (55) is fixedly mounted on the first-stage ring gear II (501 ... first-stage sun gear II (55) is sleeved on the second-stage sun gear II (55); A secondary gear ring II (56), wherein the second gear ring II (56) is fixedly mounted on the system; a second planetary gear II (57) meshing with the second sun gear II (55) is provided between the second gear ring II (56) and the second sun gear II (55); a second planetary gear carrier II (58) is fixedly mounted on the second planetary gear II (57); a driving sprocket (504) is fixedly mounted on the second planetary gear carrier II (58); a driven sprocket (511) is fixedly mounted on the second output shaft (6); and the driving sprocket (504) and the driven sprocket (511) are connected via a chain (505).

7. The distributed drive system according to claim 1, characterized in that: The hybrid reduction assembly (5) comprises a first-stage sun gear II (50) fixedly mounted on the motor shaft of the second motor (2); a first-stage ring gear II (501) is sleeved on the first-stage sun gear II (50); the first-stage ring gear II (501) is fixedly mounted on the system; a first-stage planetary gear II (502) is arranged between the first-stage ring gear II (501) and the first-stage sun gear II (50); a first-stage planetary carrier II (503) is fixedly mounted on the first-stage planetary gear II (502); a second sun gear II (55) is fixedly mounted on the first-stage planetary carrier II (503); and the second sun gear II (55) is fixedly mounted on the first-stage planetary carrier II (503). A second-stage ring gear II (56) is sleeved on the wheel II (55), and the second-stage ring gear II (56) is fixedly mounted on the system; a second-stage planetary gear II (57) meshing with the second-stage sun gear II (55) is arranged between the second-stage ring gear II (56) and the second-stage sun gear II (55), and a second-stage planetary carrier II (58) is fixedly mounted on the second-stage planetary gear II (57); a driving sprocket (504) is fixedly mounted on the second-stage planetary carrier II (58), and a driven sprocket (511) is fixedly mounted on the second output shaft (6), and the driving sprocket (504) and the driven sprocket (511) are connected via a chain (505).

8. The distributed drive system according to claim 1, characterized in that: The hybrid reduction assembly (5) comprises at least a first linkage shaft (59) and a second linkage shaft (591) which are arranged in parallel; a driven transmission wheel (592) is fixedly provided on the first linkage shaft (59); a driving transmission wheel (593) meshing with the driven transmission wheel (592) is fixedly provided on the second motor (2); a primary driving connecting wheel (594) is also fixedly provided on the first linkage shaft (59); a primary driven connecting wheel (595) meshing with the primary driving connecting wheel (594) is fixedly provided on the second linkage shaft (591); a secondary driving connecting wheel (596) is also fixedly provided on the second linkage shaft (591); and a secondary driven connecting wheel (597) meshing with the secondary driving connecting wheel (596) is fixedly provided on the second output shaft (6).

9. The distributed drive system according to any one of claims 6 to 8, characterized in that: The double-row planetary gear reduction assembly (3) and the second motor (2) are arranged side by side, and the second motor (2) and the double-row planetary gear reduction assembly (3) are close to each other.

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