Built-in integrated hybrid power coupled driving motor

Abstract

The invention relates to the technical field of vehicle motors, and particularly discloses a built-in integrated hybrid power coupling driving motor, which comprises a shell, a motor rotor is arranged in the shell, a gear ring is fixedly mounted in the motor rotor, an output shaft is connected to the end part of the motor rotor, and the output shaft is connected with a motor shaft. A motor rotor is arranged in the shell, a planet carrier body is arranged in the motor rotor, the planet carrier body is fixedly connected with a second input shaft through a spline, a first input shaft is installed on the outer wall of the second input shaft, a sun gear is connected to the first input shaft, and two rotor right bearings and two rotor left bearings are connected to the two sides of the interior of the shell respectively; according to the invention, a series-parallel mode is adopted, the hybrid electric vehicle is carried on a commercial vehicle and can meet the national sixth and fourth stage oil consumption requirement, the power coupler is integrated into the motor rotor, an independent gear box is not arranged, the structure is simpler, the size is smaller, the motor rotor is directly connected with a gear ring of the power coupler, and the efficiency is higher.

Description

Technical Field

[0001] The present invention belongs to the technical field of vehicle motors, and particularly relates to a drive motor with an integrated built-in hybrid power coupling. Background Art

[0002] With the increasing global attention to environmental protection and energy efficiency, the automotive industry is undergoing a crucial transformation from traditional fuel power to new energy power. As an important technical route in the transitional stage, hybrid electric vehicles combine the advantages of traditional internal combustion engines and electric motors, which can effectively reduce fuel consumption and emissions and improve energy utilization efficiency. In the power system of hybrid electric vehicles, as one of the core components, the performance of the drive motor directly affects the power performance, economy, and reliability of the whole vehicle. The drive motor with an integrated built-in hybrid power coupling realizes efficient power transmission and flexible power distribution by integrating and coupling multiple power sources, which is an important development direction of hybrid electric vehicle technology.

[0003] In the current commercial vehicle field, as a key technology to improve fuel economy and reduce emissions, hybrid power systems have been widely used. Among them, the parallel hybrid power system has become the main form of commercial vehicle hybrid power systems due to its relatively simple structure and high technical maturity. Such parallel hybrid power systems usually come with a dedicated multi-speed gearbox independent of the motor. Its original design intention is to optimize the power output matching of the engine and the motor through multi-gear shifting to adapt to different driving conditions. Specifically, in low-speed or low-load conditions, the system can rely more on the motor drive to reduce the fuel consumption and emissions of the engine; while in high-speed or high-load conditions, the engine and the motor work together to provide sufficient power output.

[0004] However, with the increasingly strict environmental protection regulations, especially the implementation of the fuel consumption standard of the sixth national stage and the fourth phase, the independent multi-speed gearboxes equipped in the existing parallel hybrid power systems gradually expose their limitations. On the one hand, the complex structure of the gearbox leads to higher mechanical losses and energy transfer losses, making it difficult for the overall system efficiency to meet the fuel consumption requirements of the sixth national stage and the fourth phase. On the other hand, the relatively large volume of the independent multi-speed gearbox not only increases the weight and cost of the whole vehicle but also restricts the layout and optimization of the vehicle interior space. Therefore, a drive motor with an integrated built-in hybrid power coupling is proposed. Summary of the Invention

[0005] The object of the present invention is to provide a drive motor with an internal integrated hybrid power coupling, so as to solve the problems in the prior art that the complex structure of the gearbox leads to high mechanical losses and energy transfer losses, making it difficult for the overall efficiency of the system to meet the fuel consumption requirements of the national VI stage 4; on the other hand, the independent multi-speed gearbox is relatively large in volume, which not only increases the weight and cost of the whole vehicle, but also restricts the layout and optimization of the vehicle interior space.

[0006] To achieve the above object, the present invention provides the following technical solutions:

[0007] A drive motor with an internal integrated hybrid power coupling includes a housing. Inside the housing, there is a motor rotor. Inside the motor rotor, a ring gear is fixedly installed. At the end of the motor rotor, an output shaft is connected. Inside the motor rotor, a planet carrier body is provided. The planet carrier body is fixedly connected to a second input shaft through a spline. On the outer wall of the second input shaft, a first input shaft is installed. A sun gear is connected to the first input shaft. On both sides inside the housing, two rotor right bearings and two rotor left bearings are respectively connected. On both sides inside the housing, two planet carrier right bearings and two planet carrier left bearings are respectively connected.

[0008] Through the above technical solution, the present invention integrates the planetary gear mechanism (including key components such as the planet carrier body, sun gear, and ring gear) inside the motor rotor. This design method greatly saves space. Compared with the traditional externally placed planetary gear mechanism hybrid drive system, it reduces additional housings and connecting components, making the structure of the entire drive motor more compact, which is beneficial to the overall layout and lightweight design of the vehicle; the high-integration design makes the connection between components more direct and efficient, reducing energy losses during power transmission and improving the overall efficiency of the system. For example, the planet carrier body and the second input shaft are fixedly connected through a spline. This connection method is simple and reliable, and can transmit power quickly and accurately.

[0009] Preferably, the motor rotor is supported and installed inside the housing through the rotor right bearing and the rotor left bearing.

[0010] Preferably, the planet carrier body is supported and installed inside the motor rotor through the planet carrier right bearing and the planet carrier left bearing.

[0011] Through the above technical solution, two rotor right bearings and two rotor left bearings are symmetrically arranged on both sides inside the housing to support the motor rotor, and two planet carrier right bearings and two planet carrier left bearings are used to support the planet carrier body. This symmetric bearing layout not only ensures the stability and balance of the motor rotor and the planet carrier body during operation, but also makes full use of the space inside the housing, making the structure more compact and reasonable.

[0012] Preferably, the ring gear is installed between the inner wall of the planet carrier body and the motor rotor.

[0013] Preferably, the output shaft is arranged between the two right bearings of the rotor, and the planet carrier body is arranged between the two left bearings of the rotor.

[0014] Preferably, the two right bearings of the rotor and the two left bearings of the rotor are both symmetrically arranged, and the two right bearings of the planet carrier and the two left bearings of the planet carrier are both symmetrically arranged.

[0015] Preferably, the planet carrier body and the output shaft are arranged correspondingly.

[0016] Preferably, the motor rotor is arranged on both sides of the planet carrier body.

[0017] In summary, the present invention adopts a series-parallel mode, which can meet the fuel consumption requirements of the national VI stage 4 when installed on a commercial vehicle. The power coupler is integrated inside the motor rotor, without an independent gearbox, the structure is simpler, the volume is smaller, the motor rotor is directly connected to the ring gear of the power coupler, and the efficiency is higher.

[0018] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0019] The present invention places the planetary gear mechanism (including key components such as the planet carrier body, sun gear, ring gear, etc.) inside the motor rotor. This design method greatly saves space. Compared with the traditional hybrid drive system with an external planetary gear mechanism, it reduces the additional housing and connecting components, making the structure of the entire drive motor more compact, which is beneficial to the overall layout and lightweight design of the vehicle; the highly integrated design makes the connection between components more direct and efficient, reducing the energy loss during power transmission and improving the overall efficiency of the system. For example, the planet carrier body and the second input shaft are fixedly connected by splines. This connection method is simple and reliable, and can transmit power quickly and accurately.

[0020] On both sides inside the housing, two right bearings of the rotor and two left bearings of the rotor are symmetrically arranged respectively to support the motor rotor, and two right bearings of the planet carrier and two left bearings of the planet carrier are symmetrically arranged to support the planet carrier body. This symmetric bearing layout not only ensures the stability and balance of the motor rotor and the planet carrier body during operation, but also makes full use of the space inside the housing, making the structure more compact and reasonable.

[0021] The settings of the first input shaft and the second input shaft enable the flexible access of multiple power sources. The first input shaft can be connected to the power output end of the engine, and the second input shaft can be connected to the power output end of the motor. This allows the drive motor to flexibly select the input mode of the power source according to different driving conditions and driving demands. For example, when starting the vehicle and driving at low speeds, the vehicle can mainly rely on the power of the motor to drive, reducing the fuel consumption and emissions of the engine; when driving at high speeds or when high power output is required, the power of the engine and the motor can be connected simultaneously to achieve hybrid drive and improve the power performance of the vehicle.

[0022] As the core component for power coupling, the planetary gear mechanism can efficiently couple the power from different power sources. The sun gear is connected to the first input shaft, the planetary carrier body is fixedly connected to the second input shaft, and the ring gear is fixed inside the motor rotor. Through the transmission principle of the planetary gear mechanism, the smooth coupling between power sources with different speeds and torques is achieved, enabling the output shaft to output stable and continuous power.

[0023] In summary, the present invention adopts a series-parallel hybrid mode. When installed on a commercial vehicle, it can meet the fuel consumption requirements of the national VI stage 4. The power coupler is integrated inside the motor rotor, without an independent gearbox, resulting in a simpler structure and smaller volume. The ring gear of the motor rotor is directly connected to the power coupler, with higher efficiency. Brief Description of the Drawings

[0024] Figure 1 It is the structural diagram of the present invention;

[0025] Figure 2 It is the structural schematic diagram of the present invention.

[0026] In the figure: 1. Housing; 2. Motor rotor; 3A. Right rotor bearing; 3B. Left rotor bearing; 4. First input shaft; 5. Second input shaft; 6. Ring gear; 7. Output shaft; 8. Planetary carrier body; 9. Sun gear; 10A. Right planetary carrier bearing; 10B. Left planetary carrier bearing. Detailed Description of the Embodiment

[0027] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without making creative efforts shall fall within the protection scope of the present invention.

[0028] Such as Figure 1 、 Figure 2As shown in the figure, an integrated built-in hybrid drive motor includes a housing 1. Inside the housing 1, there is a motor rotor 2. Inside the motor rotor 2, a ring gear 6 is fixedly installed. At the end of the motor rotor 2, an output shaft 7 is connected. Inside the motor rotor 2, there is a planet carrier body 8. The planet carrier body 8 is fixedly connected to a second input shaft 5 through a spline. On the outer wall of the second input shaft 5, a first input shaft 4 is installed. A sun gear 9 is connected to the first input shaft 4. On both sides inside the housing 1, two right rotor bearings 3A and two left rotor bearings 3B are respectively connected. On both sides inside the housing 1, two right planet carrier bearings 10A and two left planet carrier bearings 10B are respectively connected;

[0029] In further detailed description of the present invention, the motor rotor 2 is supported and installed inside the housing 1 by the right rotor bearing 3A and the left rotor bearing 3B. The planet carrier body 8 is supported and installed inside the motor rotor 2 by the right planet carrier bearing 10A and the left planet carrier bearing 10B. The ring gear 6 is installed between the inner wall of the planet carrier body 8 and the motor rotor 2. The output shaft 7 is arranged between the two right rotor bearings 3A. The planet carrier body 8 is arranged between the two left rotor bearings 3B. The two right rotor bearings 3A and the two left rotor bearings 3B are both symmetrically arranged. The two right planet carrier bearings 10A and the two left planet carrier bearings 10B are both symmetrically arranged. The planet carrier body 8 and the output shaft 7 are correspondingly arranged. The motor rotor 2 is arranged on both sides of the planet carrier body 8;

[0030] As can be seen from the above, it should be noted that: the motor or engine is respectively connected to the first input shaft 4 or the second input shaft 5, and the power is transmitted to the internal planetary gear train of the motor rotor 2, and the power is transmitted to the internal planetary gear train of the motor rotor 2 to achieve power coupling, and finally output by the output shaft 7;

[0031] Dual input shaft power input:

[0032] The present invention is provided with a first input shaft 4 and a second input shaft 5, which can be respectively connected to different power sources. For example, the first input shaft 4 can be connected to the power output end of the engine, and the second input shaft 5 can be connected to the power output end of the motor. This design of the dual input shaft provides multiple options for power input, and can flexibly select the input mode of the power source according to different driving conditions and driving requirements; when the engine and the motor work simultaneously, the power is respectively input into the drive motor through the first input shaft 4 and the second input shaft 5. The sun gear 9 on the first input shaft 4 interacts with the planetary gear mechanism, and the second input shaft 5 is fixedly connected to the planet carrier body 8 through a spline, so as to transmit the power to the planet carrier body 8;

[0033] Planetary gear mechanism power coupling:

[0034] The planetary gear mechanism consists of a sun gear 9, a planetary carrier body 8, and a ring gear 6. The sun gear 9 is connected to the first input shaft 4, the planetary carrier body 8 is fixedly connected to the second input shaft 5, and the ring gear 6 is fixed inside the motor rotor 2. When power is input to the sun gear 9 and the planetary carrier body 8, the planetary gear mechanism starts to work. According to the transmission principle of the planetary gear mechanism, the rotation of the sun gear 9 drives the planetary gears to revolve around the sun gear 9, and at the same time, the planetary gears also rotate around their own axes. The rotation and revolution of the planetary gears are integrated through the planetary carrier body 8 to couple the power from different power sources. The coupled power is transmitted to the motor rotor 2 through the planetary carrier body 8.

[0035] Support and operation of the motor rotor 2:

[0036] The motor rotor 2 is supported and installed inside the housing 1 through a right rotor bearing 3A and a left rotor bearing 3B. The symmetrically arranged bearings ensure the stability and balance of the motor rotor 2 during operation, reducing vibration and noise. When the coupled power is transmitted to the motor rotor 2 through the planetary carrier body 8, the motor rotor 2 starts to rotate. The rotation of the motor rotor 2 generates an electromagnetic field, thereby realizing the conversion or output of electrical energy.

[0037] Power output:

[0038] An output shaft 7 is connected to the end of the motor rotor 2. The output shaft 7 is arranged between two right rotor bearings 3A. When the motor rotor 2 rotates, power is output to the vehicle's transmission system through the output shaft 7 to drive the vehicle to travel. Since the transmission ratio of the planetary gear mechanism can be adjusted according to design requirements, the rotational speed and torque of the output shaft 7 can be changed by changing the parameters of the planetary gear mechanism to adapt to different driving conditions and driving needs.

[0039] Through the setting of the above technical solution, the present invention integrates the planetary gear mechanism (including key components such as the planetary carrier body 8, the sun gear 9, and the ring gear 6) inside the motor rotor 2. This design method greatly saves space. Compared with the traditional hybrid drive system with an external planetary gear mechanism, it reduces the additional housing 1 and connecting components, making the structure of the entire drive motor more compact, which is beneficial to the overall layout and lightweight design of the vehicle. The highly integrated design makes the connection between components more direct and efficient, reducing energy loss during power transmission and improving the overall efficiency of the system. For example, the planetary carrier body 8 and the second input shaft 5 are fixedly connected by splines. This connection method is simple and reliable and can transmit power quickly and accurately.

[0040] On both sides inside the housing 1, two rotor right bearings 3A and two rotor left bearings 3B are symmetrically arranged to support the motor rotor 2, and two planet carrier right bearings 10A and two planet carrier left bearings 10B are used to support the planet carrier body 8. This symmetric bearing layout not only ensures the stability and balance of the motor rotor 2 and the planet carrier body 8 during operation, but also makes full use of the space inside the housing 1, making the structure more compact and reasonable;

[0041] The settings of the first input shaft 4 and the second input shaft 5 enable the flexible access of multiple power sources. The first input shaft 4 can be connected to the power output end of the engine, and the second input shaft 5 can be connected to the power output end of the motor, enabling the drive motor to flexibly select the input mode of the power source according to different driving conditions and driving requirements. For example, when starting and driving at low speeds, the vehicle can mainly rely on the motor power to drive, reducing the fuel consumption and emissions of the engine; when driving at high speeds or when high power output is required, the engine and motor power can be connected simultaneously to achieve hybrid drive and improve the power performance of the vehicle;

[0042] As the core component for power coupling, the planetary gear mechanism can efficiently couple the power from different power sources. The sun gear 9 is connected to the first input shaft 4, the planet carrier body 8 is fixedly connected to the second input shaft 5, and the ring gear 6 is fixed inside the motor rotor 2. Through the transmission principle of the planetary gear mechanism, smooth coupling between power sources with different speeds and torques is achieved, enabling the output shaft 7 to output stable and continuous power;

[0043] In summary, the present invention adopts a series-parallel hybrid mode. When installed on a commercial vehicle, it can meet the fuel consumption requirements of the national VI stage 4. The power coupler is integrated inside the motor rotor 2, without an independent gearbox, making the structure simpler, the volume smaller, and the direct connection between the motor rotor 2 and the ring gear 6 of the power coupler results in higher efficiency.

[0044] Furthermore, this design application is for the integrated coupling of the hybrid power system used in commercial vehicles. The present invention adopts a series-parallel hybrid mode. When installed on a commercial vehicle, it can meet the fuel consumption requirements of the national VI stage 4. The power coupler is integrated inside the motor rotor 2, without an independent gearbox, making the structure simpler, the volume smaller, and the direct connection between the motor rotor 2 and the ring gear 6 of the power coupler results in higher efficiency.

[0045] Although the embodiments of the present invention have been shown and described, for those of ordinary skill in the art, it can be understood that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principles and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A drive motor with built-in integrated hybrid coupling, characterized in that: The invention comprises a housing (1), wherein a motor rotor (2) is arranged inside the housing (1), a gear ring (6) is fixedly installed inside the motor rotor (2), an output shaft (7) is connected to the end of the motor rotor (2), a planet carrier body (8) is arranged inside the motor rotor (2), the planet carrier body (8) is fixedly connected to a second input shaft (5) via a spline, a first input shaft (4) is installed on the outer wall of the second input shaft (5), a sun gear (9) is connected to the first input shaft (4), two rotor right bearings (3A) and two rotor left bearings (3B) are respectively connected to the two sides of the interior of the housing (1), and two planet carrier right bearings (10A) and two planet carrier left bearings (10B) are respectively connected to the two sides of the interior of the housing (1).

2. The drive motor with built-in integrated hybrid coupling according to claim 1, characterized in that: The motor rotor (2) is supported and installed inside the housing (1) via the rotor right bearing (3A) and the rotor left bearing (3B).

3. The drive motor with built-in integrated hybrid coupling according to claim 1, characterized in that: The planet carrier body (8) is supported and installed inside the motor rotor (2) through the planet carrier right bearing (10A) and the planet carrier left bearing (10B).

4. The drive motor with built-in integrated hybrid coupling according to claim 1, characterized in that: The ring gear (6) is installed between the inner wall of the planet carrier body (8) and the motor rotor (2).

5. The drive motor with built-in integrated hybrid coupling according to claim 1, characterized in that: The output shaft (7) is arranged between the two rotor right bearings (3A), and the planet carrier body (8) is arranged between the two rotor left bearings (3B).

6. The drive motor with built-in integrated hybrid coupling according to claim 1, characterized in that: The two rotor right bearings (3A) and the two rotor left bearings (3B) are symmetrically arranged, and the two planet carrier right bearings (10A) and the two planet carrier left bearings (10B) are symmetrically arranged.

7. The drive motor with built-in integrated hybrid coupling according to claim 1, characterized in that: The planet carrier body (8) and the output shaft (7) are arranged correspondingly.

8. The drive motor with built-in integrated hybrid coupling according to claim 1, characterized in that: The motor rotor (2) is arranged on both sides of the planet carrier body (8).

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