Longitudinal rear-drive dual-motor hybrid mechanism

Abstract

The application discloses a longitudinal rear-drive double-motor hybrid power mechanism, wherein an engine input shaft is connected with a first motor through a first clutch, the first motor is connected with an inner input shaft through a second clutch, a second motor is connected with an outer input shaft through a third clutch, the inner input shaft is connected with the second motor and a sun gear of a second planetary gear set, the outer input shaft is connected with a second brake and a sun gear of a first planetary gear set, a carrier of the first planetary gear set is connected with a ring gear of the second planetary gear set and a first brake, the carrier of the first planetary gear set is connected with the ring gear of the first planetary gear set through a planetary gear, the ring gear of the first planetary gear set is connected with the carrier of the second planetary gear set, and the carrier of the second planetary gear set is connected with an output shaft. The longitudinal rear-drive double-motor hybrid power mechanism does not have the problems of low electric power flow efficiency and high cost caused by setting a separate brake, so that the engine direct drive mode can be realized at a lower cost.

Description

Technical Field

[0001] This invention belongs to the field of new energy vehicle transmission technology. Specifically, this invention relates to a longitudinally mounted rear-wheel drive dual-motor hybrid power mechanism. Background Technology

[0002] In the prior art, such as the patent document with publication number CN108237893A, a hybrid vehicle is disclosed. In this hybrid vehicle, during medium and high speed driving, the engine and the electric motor are coupled through a planetary mechanism. The two power flows merge and output power. The electric power flow is generated, stored, and driven by the motor, which has very low efficiency and will result in high fuel consumption at high speeds.

[0003] For example, patent document CN111572328A discloses a hybrid vehicle drive device. During medium-to-high-speed driving, this device can use a B1 brake and a C1 clutch to create two engine-driven gears, allowing the engine to directly drive the vehicle without motor power flow, resulting in high efficiency. However, its drawbacks lie in the fact that the two shifting elements require an electro-hydraulic control system, a clutch, and a brake, leading to high cost and large size. Summary of the Invention

[0004] This invention aims to at least solve one of the technical problems existing in the prior art. To this end, this invention provides a longitudinally mounted, rear-wheel-drive dual-motor hybrid powertrain mechanism, which aims to ensure that the problems of low power flow efficiency and high cost due to the use of a separate brake are avoided, thereby enabling a direct engine-driven mode to be implemented at a lower cost.

[0005] To achieve the above objectives, the technical solution adopted by the present invention is as follows: a longitudinally mounted rear-drive dual-motor hybrid power mechanism, comprising an engine input shaft, a first motor, a second motor, a first clutch, a second clutch, a third clutch, a first brake, a second brake, an inner input shaft, and an outer input shaft. The engine input shaft is connected to the first motor via the first clutch. The first motor is connected to the inner input shaft via the second clutch. The second motor is connected to the outer input shaft via the third clutch. The inner input shaft is connected to the second motor and the sun gear of the second planetary gear set. The outer input shaft is connected to the second brake and the sun gear of the first planetary gear set. The sun gear of the first planetary gear set is connected to the planet carrier of the first planetary gear set via a first planetary gear. The sun gear of the second planetary gear set is connected to the planet carrier of the second planetary gear set via a second planetary gear. The planet carrier of the first planetary gear set is connected to the ring gear of the second planetary gear set and the first brake. The planet carrier of the first planetary gear set is connected to the ring gear of the first planetary gear set via a first planetary gear set. The ring gear of the first planetary gear set is connected to the planet carrier of the second planetary gear set. The planet carrier of the second planetary gear set is connected to the output shaft.

[0006] The engine input shaft is coaxial with the inner input shaft and the outer input shaft, with the outer input shaft sleeved on the inner input shaft.

[0007] The length of the inner input shaft is greater than the length of the outer input shaft. One end of the inner input shaft is connected to the second clutch, and the other end of the inner input shaft is connected to the sun gear of the second planetary gear set. One end of the outer input shaft is connected to the third clutch, and the other end of the outer input shaft is connected to the sun gear of the first planetary gear set.

[0008] The output shaft is coaxial with the inner input shaft and the outer input shaft.

[0009] The first planetary gear ring is fixedly connected to the second planetary gear carrier, and the first planetary gear carrier is fixedly connected to the second planetary gear ring.

[0010] When the longitudinally mounted rear-drive dual-motor hybrid power mechanism operates in pure electric drive mode, the first motor is running, the first clutch is in a disengaged state, the second clutch is in a engaged state, the first motor drives the inner input shaft to rotate, and the power generated by the first motor is transmitted to the double-row planetary gear mechanism through the inner input shaft. Finally, the power is output through the output shaft.

[0011] When the longitudinally mounted rear-drive dual-motor hybrid power mechanism operates in pure electric drive mode, the second motor is running, the first clutch and the second clutch are in a disengaged state, the second motor drives the inner input shaft to rotate, and the power generated by the second motor is transmitted to the double-row planetary gear mechanism through the inner input shaft, and finally the power is output through the output shaft.

[0012] When the longitudinally mounted rear-drive dual-motor hybrid power mechanism operates in pure electric drive mode, the first clutch is in a disengaged state and the second clutch is in a engaged state. The first motor and the second motor drive the inner input shaft to rotate. The power generated by the first motor and the second motor is transmitted to the double-row planetary gear mechanism through the inner input shaft, and finally the power is output through the output shaft.

[0013] When the longitudinally mounted rear-wheel drive dual-motor hybrid powertrain operates in series drive mode, the first clutch is engaged and the second clutch is disengaged. The engine drives the first motor to operate, and the first motor generates electricity to charge the vehicle's power battery. The power battery supplies power to the second motor, and the second motor drives the inner input shaft to rotate. The power generated by the second motor is transmitted to the double-row planetary gear mechanism via the inner input shaft, and finally the power is output via the output shaft.

[0014] The longitudinally mounted rear-drive dual-motor hybrid power mechanism of the present invention uses a low-cost, simple clutch and gear mechanism to form the engine direct drive gear, which avoids the problems of low electric power flow efficiency and high cost caused by setting up a separate brake. Thus, the engine direct drive mode can be realized at a lower cost. Attached Figure Description

[0015] This manual includes the following figures, which illustrate the following:

[0016] Figure 1 This is the overall architecture diagram of the longitudinally mounted rear-drive dual-motor hybrid power mechanism of the present invention;

[0017] Figure 2 This is a diagram of the first gear ratio lever;

[0018] Figure 3 This is a diagram of the 2nd gear ratio lever;

[0019] Figure 4 It is a 3-speed ratio lever diagram;

[0020] Figure 5 This is a schematic diagram of a longitudinally mounted rear-wheel-drive dual-motor hybrid powertrain in first gear.

[0021] Figure 6 This is a schematic diagram of a longitudinally mounted rear-wheel-drive dual-motor hybrid powertrain in 2nd gear.

[0022] Figure 7 This is a schematic diagram of a longitudinally mounted rear-wheel-drive dual-motor hybrid powertrain in 3rd gear.

[0023] The diagram is labeled as follows: M1, first motor; M2, second motor; Z1, engine input shaft; Z2, inner input shaft; Z3, outer input shaft; C0, first clutch; C1, second clutch; C2, third clutch; B1, first brake; B2, second brake; S1, first planetary set sun gear; P1, first planetary set planet carrier; R1, first planetary set ring gear; S2, second planetary set sun gear; P2, second planetary set planet carrier; R2, second planetary set ring gear; Z4, output shaft. Detailed Implementation

[0024] The specific embodiments of the present invention will be further described in detail below with reference to the accompanying drawings, in order to help those skilled in the art to have a more complete, accurate and in-depth understanding of the concept and technical solutions of the present invention, and to facilitate its implementation.

[0025] It should be noted that in the following embodiments, the terms "first" and "second" do not represent an absolute distinction in structure and / or function, nor do they represent the order of execution, but are merely for the convenience of description.

[0026] like Figure 1 As shown, the present invention provides a longitudinally mounted rear-drive dual-motor hybrid power mechanism, including a dual-row planetary gear set mechanism, an engine input shaft Z1, a first motor M1, a second motor M2, a first clutch C0, a second clutch C1, a third clutch C2, a first brake B1, a second brake B2, an inner input shaft Z2, and an outer input shaft Z3. The dual-row planetary gear set mechanism includes a first planetary gear set sun gear S1, a first planetary gear set planet carrier P1, a first planetary gear set ring gear R1, a second planetary gear set sun gear S2, a second planetary gear set planet carrier P2, and a second planetary gear set ring gear R2. The engine input shaft Z1 is connected to the first motor M1 via the first clutch C0. The first motor M1 is connected to the inner input shaft Z2 via the second clutch C1. The second motor M2 is connected to the outer input shaft Z3 via the third clutch C2. The inner input shaft Z2 is connected to the second motor M2 and the second planetary gear sun gear S2. The outer input shaft Z3 is connected to the second brake B2 and the first planetary gear sun gear S1. The first planetary gear sun gear S1 is connected to the first planetary gear carrier P1 via the first planetary gear. The first planetary gear is rotatably mounted on the first planetary gear carrier P1. The first planetary gear meshes with the first planetary set sun gear S1 and the first planetary set ring gear R1. The second planetary set sun gear S2 is connected to the second planetary set planet carrier P2 through the second planetary gear. The second planetary gear is rotatably mounted on the second planetary set planet carrier P2. The second planetary gear meshes with the second planetary set sun gear S2 and the second planetary set ring gear R2. The first planetary set planet carrier P1 is connected to the second planetary set ring gear R2 and the first brake B1. The first planetary set planet carrier P1 is connected to the first planetary set ring gear R1 through the first planetary gear. The second planetary set planet carrier P2 is connected to the second planetary set ring gear R2 through the second planetary gear. The first planetary set ring gear R1 is connected to the second planetary set planet carrier P2. The second planetary set planet carrier P2 is connected to the output shaft Z4.

[0027] Specifically, such as Figure 1As shown, the engine input shaft Z1 is coaxial with the inner input shaft Z2 and the outer input shaft Z3, with the outer input shaft Z3 fitted onto the inner input shaft Z2. The length of the inner input shaft Z2 is greater than the length of the outer input shaft Z3. One end of the inner input shaft Z2 is connected to the second clutch C1, and the other end is connected to the second planetary gear set sun gear S2. One end of the outer input shaft Z3 is connected to the third clutch C2, and the other end is connected to the first planetary gear set sun gear S1. The output shaft Z4 serves as the power output component of the longitudinally mounted rear-drive dual-motor hybrid powertrain mechanism, and is coaxial with the inner input shaft Z2 and the outer input shaft Z3. The power generated by the engine, the first motor M1, and the second motor M2 is output through the dual-row planetary gear set mechanism to achieve three-speed drive. The first planetary gear set ring gear R1 of the dual-row planetary gear set mechanism is fixedly connected to the second planetary gear set planet carrier P2, and the first planetary gear set planet carrier P1 is fixedly connected to the second planetary gear set ring gear R2.

[0028] like Figure 1 As shown, the engine output shaft Z4 is connected to the motor shaft of the first motor M1 via a first clutch C0. The first clutch C0 is used to realize the power transmission and interruption between the engine output shaft Z4 and the motor shaft of the first motor M1. The inner input shaft Z2 is connected to the motor shaft of the first motor M1 via a second clutch C1. The second clutch C1 is used to realize the power transmission and interruption between the inner input shaft Z2 and the motor shaft of the first motor M1. The inner input shaft Z2 is also fixedly connected to the motor shaft of the second motor M2. The outer input shaft Z3 is connected to the motor shaft of the second motor M2 via a third clutch C2. The third clutch C2 is used to realize the power transmission and interruption between the outer input shaft Z3 and the motor shaft of the second motor M2. The first brake B1 is used to brake the first planetary gear carrier P1, and the second brake B2 is used to brake the outer input shaft Z3. The engine, first motor M1, and second motor M2 are coaxially arranged with the output shaft Z4. The power of the two motors is connected to the double-row planetary gear mechanism through a clutch and brake, and the output power realizes gear shifting. At the same time, it can realize independent drive of the engine, independent drive of the first motor M1, independent drive of the second motor M2, and combined drive of the engine and motors. The inner input shaft Z2 and the outer input shaft Z3 are coaxially arranged with a hollow sleeve, and are respectively connected to the sun gear of the first planetary gear and the sun gear of the second planetary gear.

[0029] The longitudinally mounted rear-drive dual-motor hybrid power mechanism of the present invention can operate in pure electric drive mode, series drive mode, parallel drive mode, engine direct drive mode, brake energy recovery and idle charging mode.

[0030] When the longitudinally mounted rear-drive dual-motor hybrid power mechanism of the present invention operates in pure electric drive mode, it can be in gear 1, gear 2 or gear 3. The first motor M1 is running, the first clutch C0 is in the disengaged state, the second clutch C1 is in the engaged state, the first motor M1 can drive the inner input shaft Z2 to rotate, and the power generated by the first motor M1 is transmitted to the double-row planetary gear mechanism through the inner input shaft Z2. Finally, the power is output through the output shaft Z4.

[0031] When the longitudinally mounted rear-drive dual-motor hybrid power mechanism of the present invention operates in pure electric drive mode, it can be in gear 1, gear 2 or gear 3. The second motor M2 is running, the first clutch C0 and the second clutch C1 are in a disengaged state, the second motor M2 drives the inner input shaft Z2 to rotate, and the power generated by the second motor M2 is transmitted to the double-row planetary gear mechanism through the inner input shaft Z2. Finally, the power is output through the output shaft Z4.

[0032] When the longitudinally mounted rear-drive dual-motor hybrid power mechanism of the present invention operates in pure electric drive mode, it can be in gear 1, gear 2 or gear 3. The first motor M1 and the second motor M2 operate simultaneously. The first clutch C0 is in the disengaged state and the second clutch C1 is in the engaged state. The first motor M1 and the second motor M2 can drive the inner input shaft Z2 to rotate. The power generated by the first motor M1 and the second motor M2 is transmitted to the double-row planetary gear mechanism through the inner input shaft Z2. Finally, the power is output through the output shaft Z4.

[0033] When the longitudinally mounted rear-drive dual-motor hybrid power mechanism of the present invention operates in series drive mode, it can be in gear 1, gear 2, or gear 3. The engine and the second motor M2 are running, the first clutch C0 is engaged, and the second clutch C1 is disengaged. The engine drives the first motor M1 to run, and the first motor M1 generates electricity to charge the power battery on the vehicle. The power battery supplies power to the second motor M2. The second motor M2 drives the inner input shaft Z2 to rotate. The power generated by the second motor M2 is transmitted to the double-row planetary gear mechanism through the inner input shaft Z2, and finally the power is output through the output shaft Z4.

[0034] When the longitudinally mounted rear-drive dual-motor hybrid power mechanism of the present invention operates in parallel drive mode, it can be in gear 1, gear 2, or gear 3. The engine and the first motor M1 are running, and the first clutch C0 and the second clutch C1 are engaged. The engine and the first motor M1 drive the vehicle to move simultaneously. The first motor M1 drives the inner input shaft Z2 to rotate. The power generated by the engine and the first motor M1 is transmitted to the double-row planetary gear mechanism through the inner input shaft Z2, and finally the power is output through the output shaft Z4.

[0035] When the longitudinally mounted rear-drive dual-motor hybrid power mechanism of the present invention operates in parallel drive mode, it can be in gear 1, gear 2 or gear 3. The engine and the second motor M2 are running, the first clutch C0 and the second clutch C1 are engaged, and the engine and the second motor M2 drive the vehicle to move simultaneously. The second motor M2 drives the inner input shaft Z2 to rotate. The power generated by the engine and the second motor M2 is transmitted to the double-row planetary gear mechanism through the inner input shaft Z2, and finally the power is output through the output shaft Z4.

[0036] When the longitudinally mounted rear-drive dual-motor hybrid power mechanism of the present invention operates in parallel drive mode, it can be in gear 1, gear 2, or gear 3. The engine, the first motor M1, and the second motor M2 are running, and the first clutch C0 and the second clutch C1 are engaged. The engine, the first motor M1, and the second motor M2 simultaneously drive the vehicle. The first motor M1 and the second motor M2 drive the inner input shaft Z2 to rotate. The power generated by the engine and the second motor M2 is transmitted to the double-row planetary gear mechanism through the inner input shaft Z2, and finally the power is output through the output shaft Z4.

[0037] When the longitudinally mounted rear-drive dual-motor hybrid power mechanism of the present invention operates in parallel drive mode, it can be in gear 1, gear 2 or gear 3. The engine and the first motor M1 are running, the first clutch C0 and the second clutch C1 are engaged, the engine drives the vehicle, the first motor M1 generates electricity, the first motor M1 adjusts the engine operating range, the power generated by the engine is transmitted to the double-row planetary gear mechanism through the inner input shaft Z2, and finally the power is output through the output shaft Z4.

[0038] When the longitudinally mounted rear-drive dual-motor hybrid power mechanism of the present invention operates in parallel drive mode, it can be in gear 1, gear 2 or gear 3. The engine and the second motor M2 are running, the first clutch C0 and the second clutch C1 are engaged, the engine drives the vehicle, the second motor M2 generates electricity, the second motor M2 adjusts the engine's operating range, the power generated by the engine is transmitted to the double-row planetary gear mechanism through the inner input shaft Z2, and finally the power is output through the output shaft Z4.

[0039] When the longitudinally mounted rear-drive dual-motor hybrid power mechanism of the present invention operates in engine direct drive mode, it can be in 1st, 2nd, or 3rd gear. When the engine is running, the first clutch C0 and the second clutch C1 are engaged, and the engine drives the vehicle. The power generated by the engine is transmitted to the dual-row planetary gear mechanism via the inner input shaft Z2, and finally the power is output via the output shaft Z4.

[0040] When the longitudinally mounted rear-drive dual-motor hybrid power mechanism of the present invention operates in the braking energy recovery mode, it can be in gear 1, gear 2 or gear 3. The first clutch C0 is in the disengaged state and the second clutch C1 is in the engaged state. The braking energy required by the vehicle is transmitted to the first motor M1 through the output shaft Z4 and the double-row planetary gear mechanism in sequence, so that the first motor M1 enters the power generation working mode and charges the power battery by the first motor M1 to realize energy recovery.

[0041] When the longitudinally mounted rear-drive dual-motor hybrid power mechanism of the present invention is operating in the braking energy recovery mode, it can be in gear 1, gear 2 or gear 3. The first clutch C0 and the second clutch C1 are in the disengaged state. The braking energy required by the vehicle is transmitted to the second motor M2 in sequence through the output shaft Z4 and the double-row planetary gear mechanism, so that the second motor M2 enters the power generation mode and charges the power battery by the second motor M2 to realize energy recovery.

[0042] When the longitudinally mounted rear-drive dual-motor hybrid power mechanism of the present invention is operating in idle charging mode, it can be in gear 1, gear 2 or gear 3, the first clutch C0 is engaged, the second clutch C1 is disengaged, the engine drives the first motor M1 to operate, the first motor M1 generates electricity to charge the power battery on the vehicle.

[0043] like Figure 5 As shown, in the longitudinally mounted rear-drive dual-motor hybrid power mechanism of the present invention, when in first gear, the third clutch C2 is disengaged, the first brake B1 is engaged, and the second brake B2 is disengaged. The first brake B1 brakes the first planetary gear set carrier P1, preventing it from rotating. Power is transmitted from the inner input shaft Z2 to the sun gear of the second planetary gear set, and then from the sun gear to the second planetary gear set carrier P2 via the second planetary gears. Finally, power is transmitted from the second planetary gear set carrier P2 to the output shaft Z4, which outputs power.

[0044] like Figure 2 As shown, when the longitudinally mounted rear-drive dual-motor hybrid power mechanism of the present invention is in 1st gear, its speed ratio is (a+1) / 1, where a is the ratio of the number of teeth of the second planetary gear ring R2 to the number of teeth of the second planetary gear sun gear S2.

[0045] like Figure 6As shown, in the longitudinally mounted rear-drive dual-motor hybrid power mechanism of the present invention, when in 2nd gear, the third clutch C2 is disengaged, the first brake B1 is disengaged, and the second brake B2 is engaged. The second brake B2 brakes the outer input shaft Z3, preventing it from rotating. Power is transmitted from the inner input shaft Z2 to the sun gear of the second planetary gear set, and then from the sun gear to the planet carrier P2 via the second planetary gear set. Finally, power is transmitted from the planet carrier P2 to the output shaft Z4, which outputs power.

[0046] like Figure 3 As shown, when the longitudinally mounted rear-drive dual-motor hybrid power mechanism of the present invention is in 2nd gear, its speed ratio is (a+1+b) / (b+1), where a is the ratio of the number of teeth of the second planetary gear ring R2 to the number of teeth of the second planetary gear sun gear S2, and b is the ratio of the number of teeth of the first planetary gear ring R1 to the number of teeth of the first planetary gear sun gear S1.

[0047] like Figure 7 As shown, in the longitudinally mounted rear-drive dual-motor hybrid power mechanism of the present invention, when in 3rd gear, the third clutch C2 is engaged, the first brake B1 is engaged, and the second brake B2 is disengaged. The first brake B1 brakes the first planetary gear carrier P1, preventing it from rotating. Power is simultaneously transmitted to the dual-row planetary gear mechanism via the inner input shaft Z2 and the outer input shaft Z3. The power is then transmitted to the output shaft Z4 via the first planetary gear ring gear and the second planetary gear carrier P2, and the output shaft Z4 outputs power.

[0048] like Figure 4 As shown, when the longitudinally mounted rear-drive dual-motor hybrid power mechanism of the present invention is in 3rd gear, its speed ratio is 1.

[0049] The longitudinally mounted rear-drive dual-motor hybrid power mechanism of the present invention is a dual-motor P1P2 hybrid power structure comprising two drive motors and a dual planetary gear set. The first motor M1 and the second motor M2 can drive the wheels individually or simultaneously. Therefore, smaller motors can be selected for the two motors. Compared with the traditional hybrid structure that can only achieve one motor driving the wheel, which requires a large motor to drive the wheel, the present invention is more cost-effective in terms of motors while achieving the same driving capability.

[0050] In this invention, both motors can drive the wheels independently, and if one motor fails, the other motor can still continue to drive the wheels, thus improving the system's robustness.

[0051] In this invention, both the engine and the second motor M2 have three gears for driving, the engine and motor speeds have a wide range of adjustment, the power source has high driving efficiency, and the vehicle has good economy.

[0052] In this invention, since the engine has 3 gears, the first gear has a relatively high speed. The engine engages in the first gear, driving the vehicle at a low speed. The engine engages early, resulting in strong overall vehicle power.

[0053] In this invention, the clutch and motor are integrated into a structure that is compact in size and lightweight.

[0054] In this invention, there are multiple driving modes. All three power sources can drive individually or in combination. The model is flexible, and the vehicle can select the driving mode according to its needs, resulting in good power performance and economy.

[0055] The longitudinally mounted rear-drive dual-motor hybrid power mechanism of the present invention has the following advantages:

[0056] 1. A longitudinally mounted rear-drive dual-motor hybrid power drive system is formed by using 2 motors, 3 clutches, 2 brakes, 2 planetary gear sets and gear shaft mechanism, which has the advantages of simple structure, low cost and multiple modes;

[0057] 2. It is a front-engine, rear-wheel-drive DHT configuration with P1 and P2 hybrid configurations;

[0058] 3. The engine engages at low speeds but delivers strong power;

[0059] 4. The clutch is integrated with the motor. The external gear drum of the clutch is integrated into the motor rotor shaft, and the internal gear drum of the clutch is integrated into the motor input shaft. The structure is compact and the axial dimension is short.

[0060] 5. Multiple power transmission modes; all three power sources can be driven individually or in combination; good power, large room for economic optimization, and good robustness.

[0061] 6. It can achieve dual-motor start-up drive, which has strong power; and the performance requirements of a single motor are relatively low, which has a cost advantage.

[0062] The present invention has been described above by way of example with reference to the accompanying drawings. Obviously, the specific implementation of the present invention is not limited to the above-described manner. Any non-substantial improvements made using the inventive concept and technical solution; or the direct application of the inventive concept and technical solution to other situations without modification, are all within the protection scope of the present invention.

Claims

1. A longitudinally mounted rear-drive dual-motor hybrid powertrain mechanism, comprising an engine input shaft, a first motor, and a second motor, characterized in that: It also includes a first clutch, a second clutch, a third clutch, a first brake, a second brake, an inner input shaft, and an outer input shaft. The engine input shaft is connected to the first motor via the first clutch. The first motor is connected to the inner input shaft via the second clutch. The second motor is connected to the outer input shaft via the third clutch. The inner input shaft is connected to the second motor and the second planetary gear sun gear. The outer input shaft is connected to the second brake and the first planetary gear sun gear. The first planetary gear sun gear is connected to the first planetary gear carrier via the first planetary gear. The second planetary gear sun gear is connected to the second planetary gear carrier via the second planetary gear. The first planetary gear carrier is connected to the second planetary gear ring gear and the first brake. The first planetary gear carrier is connected to the first planetary gear ring gear via the first planetary gear. The first planetary gear ring gear is connected to the second planetary gear carrier. The second planetary gear carrier is connected to the output shaft. The engine input shaft is coaxially arranged with the inner input shaft and the outer input shaft, and the outer input shaft is sleeved on the inner input shaft; The length of the inner input shaft is greater than the length of the outer input shaft. One end of the inner input shaft is connected to the second clutch, and the other end of the inner input shaft is connected to the sun gear of the second planetary gear set. One end of the outer input shaft is connected to the third clutch, and the other end of the outer input shaft is connected to the sun gear of the first planetary gear set.

2. The longitudinally mounted rear-drive dual-motor hybrid power mechanism according to claim 1, characterized in that: The output shaft is coaxial with the inner input shaft and the outer input shaft.

3. The longitudinally mounted rear-drive dual-motor hybrid power mechanism according to claim 1, characterized in that: The first planetary gear ring is fixedly connected to the second planetary gear carrier, and the first planetary gear carrier is fixedly connected to the second planetary gear ring.

4. The longitudinally mounted rear-drive dual-motor hybrid power mechanism according to any one of claims 1 to 3, characterized in that: When the longitudinally mounted rear-drive dual-motor hybrid power mechanism operates in pure electric drive mode, the first motor is running, the first clutch is in a disengaged state, the second clutch is in a engaged state, the first motor drives the inner input shaft to rotate, and the power generated by the first motor is transmitted to the double-row planetary gear mechanism through the inner input shaft. Finally, the power is output through the output shaft.

5. The longitudinally mounted rear-drive dual-motor hybrid power mechanism according to any one of claims 1 to 3, characterized in that: When the longitudinally mounted rear-drive dual-motor hybrid power mechanism operates in pure electric drive mode, the second motor is running, the first clutch and the second clutch are in a disengaged state, the second motor drives the inner input shaft to rotate, and the power generated by the second motor is transmitted to the double-row planetary gear mechanism through the inner input shaft, and finally the power is output through the output shaft.

6. The longitudinally mounted rear-drive dual-motor hybrid power mechanism according to any one of claims 1 to 3, characterized in that: When the longitudinally mounted rear-drive dual-motor hybrid power mechanism operates in pure electric drive mode, the first clutch is in a disengaged state and the second clutch is in a engaged state. The first motor and the second motor drive the inner input shaft to rotate. The power generated by the first motor and the second motor is transmitted to the double-row planetary gear mechanism through the inner input shaft, and finally the power is output through the output shaft.

7. The longitudinally mounted rear-drive dual-motor hybrid power mechanism according to any one of claims 1 to 3, characterized in that: When the longitudinally mounted rear-wheel drive dual-motor hybrid powertrain operates in series drive mode, the first clutch is engaged and the second clutch is disengaged. The engine drives the first motor to operate, and the first motor generates electricity to charge the vehicle's power battery. The power battery supplies power to the second motor, and the second motor drives the inner input shaft to rotate. The power generated by the second motor is transmitted to the double-row planetary gear mechanism via the inner input shaft, and finally the power is output via the output shaft.

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