CN207772874U - A kind of combination train formula hybrid power system for automobile - Google Patents

Abstract

A kind of combination train formula hybrid power system for automobile, including engine, two motors, battery pack, inverter, three driving gears, four driven gears, shift fork clutch collar, clutch and combination train gear, it includes sun gear, outer planet round, inner planets round, planetary wheel carrier, centre wheel, brake disc, ring gear, two brakes to combine train gear, combining train gear tool, there are two gears, including high gear and low gear；The combination train formula hybrid power system for automobile of the utility model has four-speed gear shift ability, possess pure electric vehicle single motor drive mode, pure electric vehicle Dual-motors Driving pattern, mixed dynamic parallel drive pattern, mixed dynamic series drive mode, engine and pattern and inertia energy take-back model is operated alone, can steadily quick implementation pattern it switch, gear ratios can quickly be changed according to vehicle actual operating mode, it realizes distributing rationally for energy, promotes the dynamic property and economy of vehicle.

Description

A combined wheel train type vehicle hybrid power system

technical field

The utility model belongs to the technical field of automobile hybrid power, in particular to a combined wheel train type automobile hybrid power system.

Background technique

At present, climate anomalies and environmental pollution caused by the excessive use of fossil fuels have become the primary issues affecting the common destiny of mankind in the future. For the common future of mankind, countries all over the world are making active efforts to find alternatives to fossil energy. New energy seems to be the most effective solution at present. As the automotive sector with the highest consumption of fossil energy, it is imperative to replace traditional fuel vehicles with new energy vehicles.

No matter how high the emission standards of fuel vehicles are set, the exhaust gas emitted by fuel vehicles will inevitably pollute the environment. Therefore, if we do not solve the problem of exhaust emissions, we can only treat the symptoms and not the root cause. Furthermore, statistics show that under more than 80% of the road conditions, an ordinary fuel car can only exert 40% of its power potential, and in a severely congested urban area, the power potential will even drop to 25%, resulting in fuel consumption. Inefficient emissions from cars have become the norm.

Since the 1990s, countries around the world have become more and more vocal about improving the environment. It is generally believed that pure electric vehicles will definitely replace fuel vehicles in the future, but the reality is that pure electric vehicles are restricted by battery technology and expensive. The cost of pure electric vehicles will be difficult to shake the position of fuel vehicles for a long time.

For this reason, automotive engineers have proposed a compromise plan, that is, to develop a hybrid vehicle with both a fuel engine and an electric motor, which can not only take advantage of the fuel engine's long working time and good power, but also take advantage of the electric motor's ineffectiveness. The advantages of pollution and low noise have realized the advantages of learning from each other, so that the comprehensive thermal efficiency of the vehicle has been increased by more than 10%, while the exhaust gas emission has been reduced by more than 30%.

Since the world's first hybrid car rolled off the production line in 1997, various car manufacturers around the world have launched hybrid cars, and each car manufacturer has also developed their own unique vehicle hybrid systems, but the existing cars The hybrid system is still lacking in the diversity of operating modes and mode switching.

Utility model content

Aiming at the problems existing in the prior art, the utility model provides a combined wheel train type vehicle hybrid power system, which has a pure electric single motor drive mode, a pure electric dual motor drive mode, a hybrid parallel drive mode, a hybrid series drive mode, The engine independent drive mode and the inertial energy recovery mode can achieve smooth and fast mode switching, and can quickly change the gear speed ratio according to the actual operating conditions of the vehicle, realize the optimal allocation of energy, and improve the power and economy of the vehicle.

In order to achieve the above object, the utility model adopts the following technical scheme: a combined wheel train type vehicle hybrid power system, including an engine, a first motor, a second motor, a battery pack, an inverter, a first driving gear, a second driving gear gear, the third driving gear, the first driven gear, the second driven gear, the third driven gear, the fourth driven gear, the shift fork sleeve and the combined gear train transmission mechanism; the power output shaft of the engine passes through The clutch is connected with the motor shaft of the first motor, and the first driving gear and the second driving gear are installed on the motor shaft of the first motor, and the first driving gear and the second driving gear are only connected to the motor shaft of the first motor. It has a degree of freedom of rotation; the shift fork sleeve is installed on the motor shaft of the first motor between the first drive gear and the second drive gear, and the shift fork sleeve only has axial movement relative to the motor shaft of the first motor degree of freedom, the shift fork sleeve engages with the first driving gear and the second driving gear respectively; the third driving gear is fixedly mounted on the motor shaft of the second motor; the first driven gear and the second driven gear The driven gears are all fixedly installed on the power input shaft of the combined gear train transmission mechanism, the first driven gear meshes with the first driving gear, and the second driven gear meshes with the second driving gear and the third driving gear at the same time; The third driven gear is fixedly mounted on the power output shaft of the combined gear train speed change mechanism, the fourth driven gear is fixedly mounted on the wheel shaft of the wheel, and the third driven gear meshes with the fourth driven gear; The battery pack is electrically connected to the first motor and the second motor respectively through the inverter.

The first driving gear and the first driven gear form a speed-up transmission gear set, the second driving gear and the second driven gear form a constant-speed transmission gear set, and the third driving gear and the second driven gear Constitute the reduction transmission gear set.

The combined gear train transmission mechanism includes a sun gear, an outer planetary gear, an inner planetary gear, a planetary gear carrier, a center wheel, a brake disc, an inner ring gear, a first brake and a second brake; the sun gear is fixedly mounted on the combination On the power input shaft of the gear train transmission mechanism, the planetary gear frame is fixedly installed on the power output shaft of the combined gear train transmission mechanism, and the outer planetary gear and the inner planetary gear are radially installed on the planetary gear frame. The outer planetary wheel and the inner planetary gear only have rotational freedom on the planetary gear carrier; the outer planetary wheel meshes with the inner planetary gear, sun gear and inner ring gear at the same time; the center wheel and the brake disc are set coaxially on the On the power input shaft of the combined gear train transmission mechanism, the center wheel and the brake disc only have rotational freedom relative to the power input shaft of the combined gear train transmission mechanism, and the center wheel is meshed with the inner planetary gear; The moving disc performs braking cooperation, and the second brake performs braking cooperation with the inner ring gear.

When the first brake is released and the second brake is engaged, the brake disc is in a free state, the ring gear is in a braking state, and the combined gear train transmission mechanism is in a high-speed gear; the first brake is engaged and the second brake is released When it is on, the brake disc is in the braking state, the inner ring gear is in the free state, and the combined gear train transmission mechanism is in the low-speed gear.

When the speed-up transmission gear set composed of the first driving gear and the first driven gear is performing power transmission, and the combined gear train transmission mechanism is in a high-speed gear, the automobile hybrid power system is in the first gear ratio; the second When the constant speed transmission gear set composed of the driving gear and the second driven gear is for power transmission, and the combined gear train transmission mechanism is in the high-speed gear, the automobile hybrid power system is in the second gear ratio; the first driving gear and the second driving gear When the speed-up transmission gear set composed of a driven gear is for power transmission, and when the combined gear train speed change mechanism is in a low-speed gear, the vehicle hybrid power system has a three-speed ratio; the second driving gear and the second driven gear When the formed constant speed transmission gear set is for power transmission, and when the combined gear train transmission mechanism is in the low gear position, the automobile hybrid power system is in the fourth gear ratio.

The beneficial effects of the utility model:

The combined wheel-train vehicle hybrid power system of the present utility model has a pure electric single motor drive mode, a pure electric double motor drive mode, a hybrid parallel drive mode, a hybrid series drive mode, an engine independent drive mode and an inertial energy recovery mode, It can smoothly and quickly realize the mode switching, and can quickly change the gear speed ratio according to the actual operating conditions of the vehicle, realize the optimal allocation of energy, and improve the power and economy of the vehicle.

Description of drawings

Fig. 1 is a structural schematic diagram of a combined wheel train type automobile hybrid power system of the present utility model;

Fig. 2 is a schematic diagram of power transmission of the utility model under the driving mode of pure electric single motor;

Fig. 3 is a schematic diagram of the power transmission of the utility model under the driving mode of pure electric dual motors;

Fig. 4 is a schematic diagram of the power transmission of the utility model in the hybrid parallel driving mode;

Fig. 5 is a schematic diagram of the power transmission of the utility model in the hybrid series driving mode;

Fig. 6 is a schematic diagram of power transmission of the utility model under the mode of independent driving of the engine;

Fig. 7 is a schematic diagram of the power transmission of the utility model in the inertial energy recovery mode;

In the figure, 1—engine, 2—first motor, 3—second motor, 4—battery pack, 5—inverter, 6—first driving gear, 7—second driving gear, 8—third driving gear , 9—first driven gear, 10—second driven gear, 11—third driven gear, 12—fourth driven gear, 13—shift fork sleeve, 14—clutch, 15—wheel, 16— Sun gear, 17—outer planetary gear, 18—inner planetary gear, 19—planetary carrier, 20—center wheel, 21—brake disc, 22—internal ring gear, 23—first brake, 24—second brake.

Detailed ways

Below in conjunction with accompanying drawing and specific embodiment the utility model is described in further detail.

As shown in Figure 1, a combined wheel train type automobile hybrid power system includes an engine 1, a first motor 2, a second motor 3, a battery pack 4, an inverter 5, a first driving gear 6, and a second driving gear 7. The third driving gear 8, the first driven gear 9, the second driven gear 10, the third driven gear 11, the fourth driven gear 12, the shift fork sleeve 13 and the combined gear train transmission mechanism; The power output shaft of engine 1 is connected with the motor shaft of first motor 2 by clutch 14, and described first driving gear 6 and second driving gear 7 are all installed on the motor shaft of first motor 2, and first driving gear 6 and The second driving gear 7 has only rotational freedom with respect to the motor shaft of the first motor 2; Above, the shift fork sleeve 13 has only axial movement freedom relative to the motor shaft of the first motor 2, and the shift fork sleeve 13 engages with the first driving gear 6 and the second driving gear 7 respectively; The driving gear 8 is fixedly installed on the motor shaft of the second motor 3; the first driven gear 9 and the second driven gear 10 are all fixedly installed on the power input shaft of the combined gear train speed change mechanism, and the first driven gear 9 meshes with the first driving gear 6, and the second driven gear 10 meshes with the second driving gear 7 and the third driving gear 8 at the same time; the third driven gear 11 is fixedly installed in the power On the output shaft, the fourth driven gear 12 is fixedly mounted on the wheel shaft of the wheel 15, and the third driven gear 11 is meshed with the fourth driven gear 12; A motor 2 and a second motor 3 are electrically connected.

The first driving gear 6 and the first driven gear 9 form a speed-increasing transmission gear set, the second driving gear 7 and the second driven gear 10 form a constant speed transmission gear set, and the third driving gear 8 and The second driven gear 10 constitutes a reduction transmission gear set.

The combined gear train transmission mechanism includes a sun gear 16, an outer planetary gear 17, an inner planetary gear 18, a planetary gear carrier 19, a sun gear 20, a brake disc 21, an inner ring gear 22, a first brake 23 and a second brake 24 The sun gear 16 is fixedly installed on the power input shaft of the combined gear train transmission mechanism, and the planetary gear carrier 19 is fixedly installed on the power output shaft of the combined gear train transmission mechanism, and the outer planetary gear 17 and the inner planetary gear 18 is radially installed on the planetary wheel carrier 19, and the outer planetary wheel 17 and the inner planetary wheel 18 only have a rotational degree of freedom on the planetary wheel carrier 19; The inner ring gear 22 is meshed; the center wheel 20 and the brake disc 21 are set on the power input shaft of the combined gear train transmission mechanism in a coaxial manner, and the center wheel 20 and the brake disc 21 are relative to the combined gear train speed change mechanism. The power input shaft only has rotational freedom, and the center wheel 20 meshes with the inner planetary wheel 18; the first brake 23 and the brake disc 21 perform braking cooperation, and the second brake 24 performs braking with the inner ring gear 22 Cooperate.

When the first brake 23 is released and the second brake 24 is combined, the brake disc 21 is in a free state, the ring gear 22 is in a braking state, and the combined gear train transmission mechanism is in a high-speed gear; the first brake 23 is combined And when the second brake 24 is released, the brake disc 21 is in the braking state, the ring gear 22 is in the free state, and the combined gear train transmission mechanism is in the low gear.

When the speed-increasing transmission gear set composed of the first driving gear 6 and the first driven gear 9 performs power transmission, and when the combined gear train transmission mechanism is in a high-speed gear, the automobile hybrid power system is in the first gear ratio; When the constant speed transmission gear set formed by the second driving gear 7 and the second driven gear 10 is carrying out power transmission, and when the combined gear train transmission mechanism is a high-speed gear, the automobile hybrid power system is a second gear speed ratio; When the driving gear 6 and the first driven gear 9 form the speed-up transmission gear set for power transmission, and when the combined gear train speed change mechanism is a low-speed gear, the automobile hybrid power system is a third-gear speed ratio; the second driving gear 7 and the second driven gear 10 constitute the constant speed transmission gear set for power transmission, and when the combined gear train transmission mechanism is in the low gear position, the automobile hybrid power system is in the fourth gear ratio.

Below in conjunction with accompanying drawing illustrate the use process of the present utility model:

Embodiment 1: Pure electric single motor drive mode

As shown in Figure 2, in this mode, the engine 1 does not work and the clutch 14 is disengaged. According to the actual working conditions, the first motor 2 or the second motor 3 can be selected as the power output motor, and the battery pack 4 is the second motor through the inverter 5. A motor 2 or a second motor 3 provides electrical energy.

When the first motor 2 is selected as the power output motor, the second motor 3 does not work, and the shift fork sleeve 13 is in the left or right position, so that the shift fork sleeve 13 is engaged with the first driving gear 6 or the second driving gear 7 Together, the power of the first motor 2 will pass through the speed-increasing transmission gear set (the first driving gear 6 meshes with the first driven gear 9) or the constant speed transmission gear set (the second driving gear 7 and the second driven gear 10 meshing) is transmitted to the power input shaft of the combined gear train transmission mechanism; at the same time, the second motor 3 is driven to idle by the reduction transmission gear set (the third driving gear 8 meshes with the second driven gear 10);

When the second motor 3 is used as a power output motor, the first motor 2 does not work, and the shift fork sleeve 13 is in the neutral position, then the power of the second motor 3 will pass through the reduction transmission gear set (the third driving gear 8 and the second slave The driving gear 10 meshing) is transmitted to the power input shaft of the combined gear train speed change mechanism; at the same time, the first driving gear 6 and the second driving gear 7 are idling;

When the first brake 23 is released and the second brake 24 is combined, the brake disc 21 is in a free state, and the ring gear 22 is in a braking state. The power input shaft of the combined gear train transmission mechanism first drives the sun gear 16 to rotate, and then drives The outer planetary gear 17 rotates, and through the rotation of the outer planetary gear 17 and the meshing transmission with the inner ring gear 22, the revolution of the outer planetary gear 17 around the sun gear 16 is realized, and the rotation of the planetary gear carrier 19 is realized through the revolution of the outer planetary gear 17; At the same time, the inner planetary wheel 18, the center wheel 20 and the brake disc 21 are idling;

When the first brake 23 is combined and the second brake 24 is released, the brake disc 21 and the center wheel 20 are in a braking state, and the ring gear 22 is in a free state. The power input shaft of the combined gear train transmission mechanism first drives the sun gear 16 Rotate, and then drive the outer planetary wheel 17 to rotate, through the rotation of the outer planetary wheel 17 and the meshing transmission with the inner planetary wheel 18, realize the revolution of the inner planetary wheel 18 around the center wheel 20, and realize the planetary gear carrier through the revolution of the inner planetary wheel 18 19 rotation; at the same time, the ring gear 22 idles;

Through the rotation of the planetary gear carrier 19, the third driven gear 11 is driven to rotate, and then the fourth driven gear 12 meshed with it is driven to rotate, and finally the wheel 15 is driven to rotate.

Embodiment 2: Pure electric dual-motor drive mode

As shown in Figure 3, in this mode, the engine 1 does not work, the clutch 14 is disengaged, the first motor 2 and the second motor 3 are simultaneously used as power output motors, and the battery pack 4 provides power for the first motor 2 and the second motor through the inverter 5. Motor 3 provides electric energy.

The shift fork sleeve 13 is in the left or right position, so that the shift fork sleeve 13 is engaged with the first driving gear 6 or the second driving gear 7, then the power of the first motor 2 will pass through the speed-increasing transmission gear set (the first A driving gear 6 is meshed with the first driven gear 9) or a constant speed transmission gear set (the second driving gear 7 is meshed with the second driven gear 10) is transmitted to the power input shaft of the combined gear train speed change mechanism; at the same time, the first The power of the second motor 3 will be transmitted to the power input shaft of the combined gear train transmission mechanism through the reduction transmission gear set (the third driving gear 8 meshes with the second driven gear 10);

When the first brake 23 is released and the second brake 24 is combined, the brake disc 21 is in a free state, and the ring gear 22 is in a braking state. The power input shaft of the combined gear train transmission mechanism first drives the sun gear 16 to rotate, and then drives The outer planetary gear 17 rotates, and through the rotation of the outer planetary gear 17 and the meshing transmission with the inner ring gear 22, the revolution of the outer planetary gear 17 around the sun gear 16 is realized, and the rotation of the planetary gear carrier 19 is realized through the revolution of the outer planetary gear 17; At the same time, the inner planetary wheel 18, the center wheel 20 and the brake disc 21 are idling;

When the first brake 23 is combined and the second brake 24 is released, the brake disc 21 and the center wheel 20 are in a braking state, and the ring gear 22 is in a free state. The power input shaft of the combined gear train transmission mechanism first drives the sun gear 16 Rotate, and then drive the outer planetary wheel 17 to rotate, through the rotation of the outer planetary wheel 17 and the meshing transmission with the inner planetary wheel 18, realize the revolution of the inner planetary wheel 18 around the center wheel 20, and realize the planetary gear carrier through the revolution of the inner planetary wheel 18 19 rotation; at the same time, the ring gear 22 idles;

Through the rotation of the planetary gear carrier 19, the third driven gear 11 is driven to rotate, and then the fourth driven gear 12 meshed with it is driven to rotate, and finally the wheel 15 is driven to rotate.

Embodiment 3: Hybrid Parallel Driving Mode

As shown in Figure 4, in this mode, the engine 1 is working and the clutch 14 is engaged. According to actual working conditions, the first motor 2 or the second motor 3 can be used as a power output motor alone, or the first motor 2 and the second motor 3 can be used simultaneously. As a power output motor, the battery pack 4 provides electric energy for the first motor 2 and the second motor 3 through the inverter 5 .

When the combination of the engine 1 and the first motor 2 is selected, the shift fork sleeve 13 is in the left or right position, so that the shift fork sleeve 13 is engaged with the first driving gear 6 or the second driving gear 7, and the engine 1 The coupling power with the first motor 2 will pass through the speed-up transmission gear set (the first driving gear 6 meshes with the first driven gear 9) or the constant speed transmission gear set (the second driving gear 7 meshes with the second driven gear 10) ) is transmitted to the power input shaft of the combined gear train transmission mechanism; at the same time, the second motor 3 is driven to idle by the reduction transmission gear set (the third driving gear 8 meshes with the second driven gear 10);

When the combination of the engine 1 and the second motor 3 is selected, the shift fork sleeve 13 is in the neutral position, and the power of the engine 1 will pass through the speed-up transmission gear set (the first driving gear 6 meshes with the first driven gear 9) or The constant speed transmission gear set (the second driving gear 7 meshes with the second driven gear 10) is transmitted to the power input shaft of the combined gear train speed change mechanism; at the same time, the power of the second motor 3 will pass through the reduction transmission gear set (the third Driving gear 8 is meshed with the second driven gear 10) to the power input shaft of the combination gear train transmission mechanism, and the power of the engine 1 and the second motor 3 will be coupled on the power input shaft of the combination gear train transmission mechanism;

When the first brake 23 is released and the second brake 24 is combined, the brake disc 21 is in a free state, and the ring gear 22 is in a braking state. The power input shaft of the combined gear train transmission mechanism first drives the sun gear 16 to rotate, and then drives The outer planetary gear 17 rotates, and through the rotation of the outer planetary gear 17 and the meshing transmission with the inner ring gear 22, the revolution of the outer planetary gear 17 around the sun gear 16 is realized, and the rotation of the planetary gear carrier 19 is realized through the revolution of the outer planetary gear 17; At the same time, the inner planetary wheel 18, the center wheel 20 and the brake disc 21 are idling;

When the first brake 23 is combined and the second brake 24 is released, the brake disc 21 and the center wheel 20 are in a braking state, and the ring gear 22 is in a free state. The power input shaft of the combined gear train transmission mechanism first drives the sun gear 16 Rotate, and then drive the outer planetary wheel 17 to rotate, through the rotation of the outer planetary wheel 17 and the meshing transmission with the inner planetary wheel 18, realize the revolution of the inner planetary wheel 18 around the center wheel 20, and realize the planetary gear carrier through the revolution of the inner planetary wheel 18 19 rotation; at the same time, the ring gear 22 idles;

Through the rotation of the planetary gear carrier 19, the third driven gear 11 is driven to rotate, and then the fourth driven gear 12 meshed with it is driven to rotate, and finally the wheel 15 is driven to rotate.

Embodiment Four: Hybrid Series Drive Mode

As shown in FIG. 5 , in this mode, the engine 1 is working, the clutch 14 is engaged, the first motor 2 is used as a generator, and the second motor 3 is used as a power output motor.

The shift fork sleeve 13 is in the middle position, the engine 1 outputs mechanical energy to drive the first motor 2 to generate electricity, the electric energy generated by the first motor 2 is provided to the second motor 3 through the inverter 5, and the other way is to charge the battery pack 4, And the power of the second motor 3 will be transmitted to the power input shaft of the combined gear train transmission mechanism through the reduction transmission gear set (the third driving gear 8 meshes with the second driven gear 10);

When the first brake 23 is released and the second brake 24 is combined, the brake disc 21 is in a free state, and the ring gear 22 is in a braking state. The power input shaft of the combined gear train transmission mechanism first drives the sun gear 16 to rotate, and then drives The outer planetary gear 17 rotates, and through the rotation of the outer planetary gear 17 and the meshing transmission with the inner ring gear 22, the revolution of the outer planetary gear 17 around the sun gear 16 is realized, and the rotation of the planetary gear carrier 19 is realized through the revolution of the outer planetary gear 17; At the same time, the inner planetary wheel 18, the center wheel 20 and the brake disc 21 are idling;

When the first brake 23 is combined and the second brake 24 is released, the brake disc 21 and the center wheel 20 are in a braking state, and the ring gear 22 is in a free state. The power input shaft of the combined gear train transmission mechanism first drives the sun gear 16 Rotate, and then drive the outer planetary wheel 17 to rotate, through the rotation of the outer planetary wheel 17 and the meshing transmission with the inner planetary wheel 18, realize the revolution of the inner planetary wheel 18 around the center wheel 20, and realize the planetary gear carrier through the revolution of the inner planetary wheel 18 19 rotation; at the same time, the ring gear 22 idles;

Through the rotation of the planetary gear carrier 19, the third driven gear 11 is driven to rotate, and then the fourth driven gear 12 meshed with it is driven to rotate, and finally the wheel 15 is driven to rotate.

Embodiment 5: Engine Independent Driving Mode

As shown in FIG. 6 , in this mode, the engine 1 works, the clutch 14 is engaged, and neither the first motor 2 nor the second motor 3 works.

The shift fork sleeve 13 is in the left position or the right position, so that the shift fork sleeve 13 is engaged with the first driving gear 6 or the second driving gear 7, then the power of the engine 1 will pass through the speed-increasing transmission gear set (the first driving gear Gear 6 is meshed with the first driven gear 9) or a constant speed transmission gear set (the second driving gear 7 is meshed with the second driven gear 10) is transmitted to the power input shaft of the combined gear train speed change mechanism; The transmission gear set (the first driving gear 6 is meshed with the first driven gear 9) or the constant speed transmission gear set (the second driving gear 7 is meshed with the second driven gear 10) drives the first motor 2 to idle, and the reduction transmission gear group (the third driving gear 8 meshes with the second driven gear 10) drives the second motor 3 to idle;

When the first brake 23 is released and the second brake 24 is combined, the brake disc 21 is in a free state, and the ring gear 22 is in a braking state. The power input shaft of the combined gear train transmission mechanism first drives the sun gear 16 to rotate, and then drives The outer planetary gear 17 rotates, and through the rotation of the outer planetary gear 17 and the meshing transmission with the inner ring gear 22, the revolution of the outer planetary gear 17 around the sun gear 16 is realized, and the rotation of the planetary gear carrier 19 is realized through the revolution of the outer planetary gear 17; At the same time, the inner planetary wheel 18, the center wheel 20 and the brake disc 21 are idling;

When the first brake 23 is combined and the second brake 24 is released, the brake disc 21 and the center wheel 20 are in a braking state, and the ring gear 22 is in a free state. The power input shaft of the combined gear train transmission mechanism first drives the sun gear 16 Rotate, and then drive the outer planetary wheel 17 to rotate, through the rotation of the outer planetary wheel 17 and the meshing transmission with the inner planetary wheel 18, realize the revolution of the inner planetary wheel 18 around the center wheel 20, and realize the planetary gear carrier through the revolution of the inner planetary wheel 18 19 rotation; at the same time, the ring gear 22 idles;

Through the rotation of the planetary gear carrier 19, the third driven gear 11 is driven to rotate, and then the fourth driven gear 12 meshed with it is driven to rotate, and finally the wheel 15 is driven to rotate.

Embodiment 6: Inertial Energy Recovery Mode

As shown in FIG. 7 , in this mode, the vehicle is in the coasting or braking phase, the engine 1 is not working, the clutch 14 is disengaged, and both the first motor 2 and the second motor 3 are used as generators.

During the sliding or braking process of the vehicle, the inertial kinetic energy of the vehicle is converted into the rotational mechanical energy of the wheel 15, which drives the fourth driven gear 12 to rotate through the wheel 15, and then drives the third driven gear 11 meshed with it to rotate, thus driving Planetary carrier 19 rotates;

When the first brake 23 is released and the second brake 24 is engaged, the brake disc 21 is in a free state, and the inner ring gear 22 is in a braking state. The revolution of the outer planetary gear 17 around the sun gear 16 is realized by the rotation of the planetary gear carrier 19 , the rotation of the outer planetary gear 17 is realized through the meshing transmission with the inner ring gear 22, and the rotation of the outer planetary gear 17 drives the sun gear 16 to rotate; at the same time, the inner planetary gear 18, the center wheel 20 and the brake disc 21 are idling;

When the first brake 23 is combined and the second brake 24 is loosened, the brake disc 21 and the center wheel 20 are in a braking state, and the inner ring gear 22 is in a free state, and the rotation of the planetary wheel carrier 19 realizes that the outer planetary wheel 17 revolves around the sun. The revolution of wheel 16 realizes the revolution of inner planetary wheel 18 around center wheel 20 and the rotation of inner planetary wheel 18 through the meshing transmission of inner planetary wheel 18, outer planetary wheel 17 and center wheel 20, and realizes the outer rotation of inner planetary wheel 18 through inner planetary wheel 18. The rotation of the planetary gear 17 drives the sun gear 16 to rotate through the rotation of the outer planetary gear 17; at the same time, the inner ring gear 22 idles;

Through the rotation of the sun gear 16, the power input shaft of the combined gear train speed change mechanism is driven to rotate, and then through the speed-up transmission gear set (the first driving gear 6 meshes with the first driven gear 9) or the constant speed transmission gear set (the second The driving gear 7 meshes with the second driven gear 10) to transmit power to the first motor 2, and drive the first motor 2 to generate electricity, and the electric energy sent by the first motor 2 charges the battery pack 4 through the inverter 5; at the same time , the power is transmitted to the second motor 3 through the reduction transmission gear set (the third driving gear 8 meshes with the second driven gear 10), and drives the second motor 3 to generate electricity, and the electric energy generated by the second motor 3 passes through the inverter 5Charge the battery pack 4.

When the required braking force is small, any one of the first motor 2 and the second motor 3 can be selected to be disconnected, and only one motor is used to charge the battery pack 4 .

The schemes in the embodiments are not intended to limit the patent protection scope of the present utility model, and all equivalent implementations or changes that do not deviate from the utility model are included in the patent scope of the present case.

Claims (5)

1. A combined wheel train type automobile hybrid power system is characterized in that: comprise engine, the first motor, the second motor, battery pack, inverter, the first drive gear, the second drive gear, the 3rd drive gear, The first driven gear, the second driven gear, the third driven gear, the fourth driven gear, the shift fork sleeve and the combined gear train transmission mechanism; the power output shaft of the engine is connected with the motor of the first motor through the clutch The first driving gear and the second driving gear are all installed on the motor shaft of the first motor, and the first driving gear and the second driving gear have only rotational freedom relative to the motor shaft of the first motor; The shift fork sleeve is installed on the motor shaft of the first motor between the first driving gear and the second drive gear. The shift fork sleeve has only axial movement freedom relative to the motor shaft of the first motor. Engage and cooperate with the first driving gear and the second driving gear respectively; the third driving gear is fixedly mounted on the motor shaft of the second motor; the first driven gear and the second driven gear are fixedly mounted on the combination On the power input shaft of the gear train transmission mechanism, the first driven gear meshes with the first driving gear, and the second driven gear meshes with the second driving gear and the third driving gear at the same time; the third driven gear is fixed Installed on the power output shaft of the combined gear train speed change mechanism, the fourth driven gear is fixedly installed on the wheel shaft of the wheel, the third driven gear is meshed with the fourth driven gear; the battery pack passes through the inverter and are respectively electrically connected to the first motor and the second motor. 2. A combined wheel train type vehicle hybrid power system according to claim 1, characterized in that: the first driving gear and the first driven gear constitute a speed-up transmission gear set, and the second driving gear and the first driven gear The second driven gear forms a constant speed transmission gear set, and the third driving gear and the second driven gear form a reduction transmission gear set. 3. A combined wheel train hybrid vehicle system according to claim 2, characterized in that: said combined wheel train speed change mechanism comprises a sun gear, an outer planetary gear, an inner planetary gear, a planetary gear carrier, a center wheel, Brake disc, ring gear, first brake and second brake; the sun gear is fixedly installed on the power input shaft of the combined gear train transmission mechanism, and the planetary gear carrier is fixedly installed on the power output shaft of the combined gear train transmission mechanism On the shaft, the outer planetary wheel and the inner planetary wheel are radially installed on the planetary wheel carrier, and the outer planetary wheel and the inner planetary wheel have only rotational freedom on the planetary wheel carrier; the outer planetary wheel and the inner planetary wheel , the sun gear and the ring gear are meshed; the center wheel and the brake disc are coaxially set on the power input shaft of the combined gear train transmission mechanism, and the power of the center wheel and the brake disc relative to the combined gear train speed change mechanism The input shaft only has a degree of freedom of rotation, and the center wheel meshes with the inner planetary gear; the first brake performs braking cooperation with the brake disc, and the second brake performs braking cooperation with the inner ring gear. 4. A combined wheel train type vehicle hybrid power system according to claim 3, characterized in that: when the first brake is released and the second brake is combined, the brake disc is in a free state, and the ring gear is in a restraint state. When the first brake is engaged and the second brake is released, the brake disc is in the braking state, the inner ring gear is in the free state, and the combined gear train transmission mechanism is in the low gear. bit. 5. A combined wheel train type vehicle hybrid power system according to claim 4, characterized in that: when the speed-up transmission gear set composed of the first driving gear and the first driven gear performs power transmission, and the combination When the gear train transmission mechanism is in a high-speed gear position, the vehicle hybrid power system is in the first gear ratio; when the constant speed transmission gear set composed of the second driving gear and the second driven gear performs power transmission, and the combined gear train transmission mechanism When it is a high-speed gear, the automobile hybrid power system has a second-speed gear ratio; when the speed-up transmission gear set composed of the first driving gear and the first driven gear performs power transmission, and the combined gear train speed change mechanism is a low-speed gear , the automobile hybrid power system is in the third gear ratio; when the constant speed transmission gear set composed of the second driving gear and the second driven gear performs power transmission, and when the combined gear train speed change mechanism is in a low-speed gear, the automobile hybrid The power system is a four-speed ratio.