Hybrid powertrain system

Abstract

The application provides a kind of hybrid power transmission system, the hybrid power transmission system includes generator, drive motor, engine and output shaft, the output end of the drive motor is connected with the output shaft by first transmission group, the output end of the engine is connected with planetary gear mechanism and second synchronizer, the output end of the generator is equipped with and parallel distribution second transmission group and third transmission group, the left side of the second synchronizer is connected with the third transmission group when being combined;The hybrid power transmission system further includes first synchronizer, and the first synchronizer is used to transmit the power of generator or engine to output shaft.The hybrid power transmission system provided by the application can optimize the optimal working point of engine in real time, improve fuel economy;Simple structure, easy to carry;Different gears can be combined by first synchronizer and second synchronizer, to realize the mode of range extending, ECVT and pure electric, and the mode is more flexible.

Description

Technical Field

[0001] This invention belongs to the field of new energy vehicle technology, and specifically relates to a hybrid power transmission system. Background Technology

[0002] With the development of the new energy vehicle market, hybrid power has occupied an important position due to its unique technological advantages, and major manufacturers have a wide range of products in its lineup. Representative manufacturers include Toyota, Honda, BYD, Geely, Chery, GAC, and Li Auto. Each hybrid transmission has its own characteristics. For example, Toyota's THS system can achieve a power split mode, but it cannot decouple the engine and generator in pure electric drive, resulting in lower efficiency and no range-extending mode. BYD's DMi system can achieve a range-extending mode, but the engine direct drive at medium and high speeds is in single gear, leading to low fuel efficiency. Li Auto's range-extending solution has a single operating mode, a long power flow conversion path, and significant system losses. Summary of the Invention

[0003] This invention provides a hybrid powertrain system designed to address the technical problems of limited hybrid transmission modes and poor performance in existing hybrid transmissions.

[0004] To achieve the above objectives, the technical solution adopted by the present invention is as follows: a combined power transmission is provided, including a generator, a drive motor, an engine, and an output shaft. The output end of the drive motor is connected to the output shaft through a first transmission group. The output end of the engine is connected to a planetary gear mechanism and a second synchronizer. The output end of the generator is provided with a second transmission group and a third transmission group arranged in parallel. When the left side of the second synchronizer is engaged, it is connected to the third transmission group.

[0005] The hybrid powertrain also includes a braking unit, which is connected to the right side of the second synchronizer when engaged.

[0006] The hybrid powertrain also includes a first synchronizer for transmitting power from the generator or the engine to the output shaft.

[0007] In one possible implementation, the first transmission group includes a first gear connected to the output end of the drive motor;

[0008] The output shaft is equipped with a third gear, and the first gear is connected to the third gear in a transmission connection.

[0009] In one possible implementation, the first transmission group further includes at least one second gear that is transmissionally connected between the first gear and the third gear.

[0010] In one possible implementation, the planetary gear mechanism includes a planet carrier, a sun gear, and a ring gear. The first synchronizer is driven by the sun gear, and when the right side of the first synchronizer is engaged, it is driven by the second transmission group. The ring gear is driven by the second gear.

[0011] In one possible implementation, the planetary gear mechanism includes a planet carrier, a sun gear, and a ring gear. The sun gear is driven by the second transmission group, and the ring gear is driven by the first synchronizer. When the right side of the first synchronizer is engaged, it is driven by the second gear.

[0012] In one possible implementation, the planetary gear mechanism includes a planet carrier, a sun gear, and a ring gear, wherein the sun gear is connected to the second transmission group.

[0013] The first synchronizer is connected to the second gear drive, and when the right side of the first synchronizer is engaged, it is connected to the gear ring drive.

[0014] In one possible implementation, the hybrid powertrain further includes a transmission assembly connected to a third gear on the output shaft, the transmission assembly including at least one transmission gear.

[0015] In one possible implementation, the planetary gear mechanism includes a planet carrier, a sun gear, and a ring gear. The first synchronizer is driven by the sun gear, and when the right side of the first synchronizer is engaged, it is driven by the second transmission group. The ring gear is driven by the transmission gear.

[0016] In one possible implementation, the planetary gear mechanism includes a planet carrier, a sun gear, and a ring gear. The sun gear is driven by the second transmission group, and the ring gear is driven by the first synchronizer. When the right side of the first synchronizer is engaged, it is driven by the transmission gear.

[0017] In one possible implementation, the planetary gear mechanism includes a planet carrier, a sun gear, and a ring gear, wherein the sun gear is connected to the second transmission group.

[0018] The first synchronizer is connected to the transmission gear, and when the right side of the first synchronizer is engaged, it is connected to the gear ring.

[0019] Compared with the prior art, the embodiments of this application have the following advantages:

[0020] It can achieve single-motor pure electric mode, dual-motor pure electric mode, low-to-medium speed range-extending mode, medium-to-high speed ECVT mode, hybrid parallel mode, and energy braking recovery mode. The use of multiple modes can optimize the engine's optimal operating point in real time and improve fuel economy; at the same time, it matches the motor output mode, resulting in strong power.

[0021] It is formed by combining a planetary gear mechanism, a first synchronizer, a second synchronizer, and a first transmission group, a second transmission group, and a third transmission group. It has a simple structure, is easy to install, and is easy to control.

[0022] The generator has two engagement states. By combining the first and second synchronizers with different gears, it can achieve range-extending, ECVT, and pure electric modes. Compared with the ordinary ECVT method of directly connecting to the planetary carrier, the mode is more flexible. Attached Figure Description

[0023] Figure 1 This is a schematic diagram of a hybrid powertrain system provided in Embodiment 1 of the present invention;

[0024] Figure 2 This is a schematic diagram of a hybrid powertrain system provided in Embodiment 2 of the present invention;

[0025] Figure 3 This is a schematic diagram of a hybrid powertrain system provided in Embodiment 3 of the present invention;

[0026] Figure 4 This is a schematic diagram of a hybrid powertrain system provided in Embodiment 4 of the present invention;

[0027] Figure 5 This is a schematic diagram of a hybrid powertrain system provided in Embodiment 5 of the present invention;

[0028] Figure 6 This is a schematic diagram of a hybrid powertrain system provided in Embodiment Six of the present invention.

[0029] Explanation of reference numerals in the attached figures:

[0030] 10 - Generator;

[0031] 20 - Drive motor;

[0032] 30-Engine; 31-Second synchronizer; 32-Brake unit;

[0033] 40 - Output shaft; 41 - Third gear;

[0034] 50 - First transmission group; 51 - First gear; 52 - Second gear;

[0035] 60 - Second transmission group; 61 - Ninth gear; 62 - Tenth gear;

[0036] 70 - Third transmission group; 71 - Eleventh gear; 72 - Twelfth gear;

[0037] 80 - First synchronizer;

[0038] 90 - Planetary gear mechanism; 91 - Intermediate gear; 92 - Ring gear; 93 - Sun gear; 94 - Planet carrier;

[0039] 100 - Transmission group; 101 - Transmission gear. Detailed Implementation

[0040] To make the technical problems to be solved, the technical solutions, and the beneficial effects of the present invention clearer, the present invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present invention and are not intended to limit the present invention.

[0041] In this application, the descriptions of "left" and "right" are limited to those relating to... Figures 1 to 6 The description of its intuitive location does not represent its actual installation location in the vehicle body.

[0042] Please refer to the following: Figures 1 to 6 The hybrid power transmission system provided by the present invention will now be described. The hybrid power transmission system includes a generator 10, a drive motor 20, an engine 30, and an output shaft 40. The output end of the drive motor 20 is connected to the output shaft 40 via a first transmission group 50. The output end of the engine 30 is connected to a planetary gear mechanism 90 and a second synchronizer 31. The output end of the generator 10 is provided with a second transmission group 60 and a third transmission group 70 arranged in parallel. When the left side of the second synchronizer 31 is engaged, it is connected to the third transmission group 70. The hybrid power transmission system also includes a braking unit 32, which is connected when the right side of the second synchronizer 31 is engaged. The hybrid power transmission system also includes a first synchronizer 80, which is used to transmit power from the generator 10 or the engine 30 to the output shaft 40.

[0043] The hybrid powertrain system provided in this embodiment specifically includes the following modes (hereinafter, SOC refers to the ratio of charging capacity to rated capacity):

[0044] (1) Pure electric mode 1 (only drive motor 20 starts): When the throttle opening is <50%, SOC is >30%, vehicle speed is <60km / h, the vehicle has sufficient remaining power and low torque power demand (such as normal flat road start), the power route is: drive motor 20 → first transmission group 50 → output shaft 40.

[0045] (2) Pure electric mode 2 (only generator 10 and drive motor 20 start): When the throttle opening is >50%, SOC is >30%, and the vehicle speed is <60km / h, the vehicle has sufficient remaining power and high torque power demand (such as starting on a steep slope), the power route is: drive motor 20 → first transmission group 50 → output shaft 40; generator 10 → second transmission group 60 → first synchronizer 80 → engine 30 braking (at the same time, the right side of the second synchronizer 31 is connected to the braking unit 32) → planetary gear mechanism 90 → output shaft 40; (engine 30 does not work and acts as a braking element);

[0046] (3) Range-extending mode (generator 10, drive motor 20 and engine 30 are all started): When SOC≤30% and vehicle speed<60km / h, the vehicle has insufficient remaining power and low speed and low torque power demand (such as low speed cruising in urban road conditions) power route: engine 30 → second synchronizer 31 left side engagement → third transmission group 70 → generator 10 power generation; drive motor 20 → first transmission group 50 → output shaft 40;

[0047] (4) ECVT mode (only generator 10 and engine 30 start): When SOC≤30% and vehicle speed≥60km / h, the vehicle has insufficient remaining power. When medium and high speeds are required (such as high-speed cruising), the power route is: engine 30 → planetary gear mechanism 90 → first synchronizer 80 → second transmission group 60 → generator 10 generates electricity; engine 30 → planetary gear mechanism 90 → output shaft 40; (ECVT mode is used at medium and high speeds, generating electricity while driving, and engine 30 can be adjusted to work at the fuel efficiency point).

[0048] (5) Hybrid parallel mode (generator 10, drive motor 20 and engine 30 are all started): When the throttle opening is >50%, SOC is >30%, and the vehicle speed is ≥60km / h, the vehicle has sufficient remaining power. Accelerate at medium and high speeds with large throttle (such as when overtaking at high speed). Power route: Engine 30 → Planetary gear mechanism 90 → First synchronizer 80 → Second transmission group 60 → Generator 10 generates electricity; Engine 30 → Planetary gear mechanism 90 → Output shaft 40; Drive motor 20 → First transmission group 50 → Output shaft 40; (Power is composed of ECVT mode + pure electric mode 1)

[0049] (6) Energy recovery mode (only drive motor 20 starts): When SOC < 90%, the vehicle can recover energy, such as during braking, downhill conditions, etc. Power route: output shaft 40 → first transmission group 50 → drive motor 20 generates electricity.

[0050] Compared with the prior art, the hybrid powertrain system of the present invention has the following advantages:

[0051] (1) It can realize single motor pure electric mode, dual motor pure electric mode, medium and low speed range extension mode, medium and high speed ECVT mode, hybrid parallel mode, energy braking recovery mode. The use of multiple modes can optimize the engine's optimal operating point in real time and improve fuel economy; at the same time, it matches the motor output mode and has strong power.

[0052] (2) It is formed by combining planetary gear mechanism 90, first synchronizer 80, second synchronizer 31, first transmission group 50, second transmission group 60 and third transmission group 70. It has a simple structure, is easy to install and control.

[0053] (3) The generator 10 has two engagement states. It can be combined with different gears through the first synchronizer 80 and the second synchronizer 31 to realize range extension, ECVT and pure electric modes. Compared with the ordinary ECVT directly connected to the planetary carrier, the mode is more flexible.

[0054] (4) In pure electric mode 2, the engine 30 does not work as a braking element. At this time, the right side of the second synchronizer 31 is engaged. Since the braking unit 32 is fixed, the braking unit 32 can brake at the same time as the engine 30. Compared with the case of braking by the engine 30 alone, the braking capacity is higher. Therefore, the input torque of the generator 10 in pure electric mode 2 can be increased, thereby increasing the output torque of the system. It can be used for pure electric conditions with greater torque requirements.

[0055] In some embodiments, a specific implementation of the first transmission group 50 described above may employ, as follows: Figures 1 to 6 The structure shown. See also Figures 1 to 6 The first transmission group 50 includes a first gear 51 connected to the output end of the drive motor 20; a third gear 41 is provided on the output shaft 40, and the first gear 51 and the third gear 41 are connected in a transmission manner. In this embodiment, optionally, the drive motor 20 can be located on the left or right side of the output shaft 40. When the drive motor 20 is located on the left side of the output shaft 40, the planetary gear mechanism 90 is connected to the output shaft 40 through the first transmission group 50; when the drive motor 20 is located on the right side of the output shaft 40, the planetary gear mechanism 90 is connected to the output shaft 40 and located on the opposite side of the first transmission group 50.

[0056] In some embodiments, an improved implementation of the first transmission group 50 described above may employ, as follows: Figures 1 to 6 The structure shown. See also Figures 1 to 6 The first transmission assembly 50 also includes at least one second gear 52 that is connected between the first gear 51 and the third gear 41. The at least one second gear 50 can be adapted to the spatial arrangement within the vehicle body, and different numbers of second gears 52 can adapt to different intervals between the first gear 51 and the third gear 41.

[0057] In some embodiments, a specific implementation of the first synchronizer 80 described above may employ, as follows: Figure 1 The structure shown. See also Figure 1 The planetary gear mechanism includes a planet carrier 94, a sun gear 93, and a ring gear 92. A first synchronizer 80 is connected to the sun gear 93. When the right side of the first synchronizer 80 is engaged, it is connected to the second transmission group 60. The ring gear 92 is connected to the second gear 52. In this configuration, when the right side of the first synchronizer 80 is engaged, the second synchronizer 31 is not activated. Through the engagement of the right side of the first synchronizer 80, the second transmission group 60 is connected to the planetary gear mechanism 90, which in turn is connected to the first transmission group 50, thereby transmitting the power of the generator 10 to the output shaft 40.

[0058] It should be noted that, in this embodiment, an intermediate gear 91 is also connected between the gear ring 92 and the second gear 52.

[0059] In some embodiments, a modified implementation of the first synchronizer 80 described above may employ, as follows: Figure 2 The structure shown. See also Figure 2 The planetary gear mechanism includes a planet carrier 94, a sun gear 93, and a ring gear 92. The sun gear 93 is connected to the second transmission group 60, and the ring gear 92 is connected to the first synchronizer 80. When the right side of the first synchronizer 80 is engaged, it is connected to the second gear 52. When the second transmission group 60 is running, power is not transmitted to the output shaft 40 because the first synchronizer 80 and the ring gear 92 are separated. When the right side of the first synchronizer 80 is engaged, the ring gear 92 is connected to the first transmission group 50, thereby transmitting power from the second transmission group 60 to the output shaft 40.

[0060] It should be noted that in this embodiment, an intermediate gear 91 is also connected between the gear ring 92 and the second gear 52. However, the intermediate gear 91 is directly connected to the second gear 52. When the right side of the first synchronizer 80 is engaged, it is connected to the intermediate gear 91, thereby realizing the transmission connection between the gear ring 92 and the second gear 52.

[0061] In some embodiments, a modified implementation of the first synchronizer 80 described above may employ, as follows: Figure 3 The structure shown. See also Figure 3The planetary gear mechanism 90 includes a planet carrier 94, a sun gear 93, and a ring gear 92. The sun gear 93 is connected to the second transmission group 60. The first synchronizer 80 is connected to the second gear 52. When the right side of the first synchronizer 80 is engaged, it is connected to the ring gear 92. When the second transmission group 60 is running, power is not transmitted to the output shaft 40 because the first synchronizer 80 and the ring gear 92 are separated. When the right side of the first synchronizer 80 is engaged, the ring gear 92 is connected to the first transmission group 50, thereby transmitting power from the second transmission group 60 to the output shaft 40.

[0062] It should be noted that in this embodiment, two intermediate gears 91 are also connected between the gear ring 92 and the second gear 52.

[0063] It should be noted that the above Figures 1 to 3 The three technical solutions mainly involve changing the position of the first synchronizer 80 while keeping the position of the second synchronizer 31 unchanged. By changing the position of the first synchronizer 80, different installation situations and interior space layouts can be adapted. In these three embodiments, when in pure electric mode 2, the speed and torque of the generator 10 and the drive motor 20 will be coupled at the second gear 52 and output together. When in hybrid parallel mode, the power will also be coupled at the second gear 52.

[0064] In some embodiments, an improved implementation of the above-described hybrid powertrain system may employ, as follows: Figures 4 to 6 The structure shown. See also Figures 4 to 6 The hybrid powertrain also includes a transmission assembly 100 that is driven by a third gear 41 on the output shaft 40. The transmission assembly 100 includes at least one transmission gear 101. In this case, the drive motor 20 and the output shaft 40 are on the same side. The drive motor 20 is driven by the output shaft 40 through the first transmission assembly 50, and the output shaft 40 is driven by the planetary gear mechanism 90 through the transmission assembly 100.

[0065] In some embodiments, a specific implementation of the first synchronizer 80 described above may employ, as follows: Figure 4 The structure shown. See also Figure 4 The planetary gear mechanism 90 includes a planet carrier 94, a sun gear 93, and a ring gear 92. A first synchronizer 80 is connected to the sun gear 93. When the right side of the first synchronizer 80 is engaged, it is connected to the second transmission group 60. The ring gear 92 is connected to the transmission gear 101. In this configuration, when the right side of the first synchronizer 80 is engaged, the second synchronizer 31 is not activated. Through the engagement of the right side of the first synchronizer 80, the second transmission group 60 is connected to the planetary gear mechanism 90, which in turn is connected to the transmission group 100, thereby transmitting the power of the generator 10 to the output shaft 40.

[0066] It should be noted that, in this embodiment, an intermediate gear 91 is also connected between the gear ring 92 and the second gear 52.

[0067] In some embodiments, a modified implementation of the first synchronizer 80 described above may employ, as follows: Figure 5 The structure shown. See also Figure 5 The planetary gear mechanism 90 includes a planet carrier 94, a sun gear 93, and a ring gear 92. The sun gear 93 is connected to the second transmission group 60, and the ring gear 92 is connected to the first synchronizer 80. When the right side of the first synchronizer 80 is engaged, it is connected to the transmission gear 101. When the second transmission group 60 is running, power is not transmitted to the output shaft 40 because the first synchronizer 80 and the ring gear 92 are separated. When the right side of the first synchronizer 80 is engaged, the ring gear 92 is connected to the transmission group 100, thereby transmitting power from the second transmission group 60 to the output shaft 40.

[0068] It should be noted that in this embodiment, an intermediate gear 91 is also connected between the gear ring 92 and the second gear 52. However, the intermediate gear 91 is directly connected to the transmission gear 101. When the right side of the first synchronizer 80 is engaged, it is connected to the intermediate gear 91, thereby realizing the transmission connection between the gear ring 92 and the second gear 52.

[0069] In some embodiments, a modified implementation of the first synchronizer 80 described above may employ, as follows: Figure 6 The structure shown. See also Figure 6 The planetary gear mechanism 90 includes a planet carrier 94, a sun gear 93, and a ring gear 92. The sun gear 93 is connected to the second transmission group 60. The first synchronizer 80 is connected to the transmission gear 101. When the right side of the first synchronizer 80 is engaged, it is connected to the ring gear 92. When the second transmission group 60 is running, since the first synchronizer 80 is separated from the ring gear 92, it does not transmit power to the output shaft 40. When the right side of the first synchronizer 80 is engaged, the first synchronizer 80 is engaged with the ring gear 92 and connected to the transmission group 100, thereby transmitting power from the second transmission group 60 to the output shaft 40.

[0070] It should be noted that in this embodiment, two intermediate gears 91 are also connected between the gear ring 92 and the transmission gear 101.

[0071] It should be noted that the above Figures 4 to 6 The aforementioned technical solutions mainly involve changing the position of the first synchronizer 80 while keeping the position of the second synchronizer 31 unchanged. By changing the position of the first synchronizer 80, different installation situations and interior space layouts can be adapted.

[0072] It should be noted that the above Figures 1 to 6In the aforementioned technical solutions, when the drive motor 20 operates purely in electric mode, a small amount of gears will idle. This can reduce system consumption and improve system efficiency.

[0073] In some embodiments, a specific implementation of the second transmission group 60 and the third transmission group 70 described above can adopt the following approach: Figures 1 to 6 The structure shown. See also Figures 1 to 6 The second transmission group 60 includes a ninth gear 61 and a tenth gear 62 connected by transmission, and the third transmission group 70 includes an eleventh gear 71 and a twelfth gear 72 connected by transmission. The ninth gear 61 and the eleventh gear 71 are coaxially connected to the output end of the generator 10; the second synchronizer 31 is connected to the twelfth gear 72 when engaged on the left side. After the generator 10 starts, the output shaft of the engine 30 synchronously drives the ninth gear 61 and the eleventh gear 71 to rotate. The ninth gear 61 drives the tenth gear 62 to rotate, and the eleventh gear 71 drives the twelfth gear 72 to rotate. The switching between the second transmission group 60 and the third transmission group 70 is realized by switching the first synchronizer 80 and the second synchronizer 31.

[0074] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A hybrid powertrain system, characterized in that, It includes a generator (10), a drive motor (20), an engine (30), and an output shaft (40). The output end of the drive motor (20) is connected to the output shaft (40) via a first transmission group (50). The output end of the engine (30) is connected to a planetary gear mechanism (90) and a second synchronizer (31). The output end of the generator (10) is provided with a second transmission group (60) and a third transmission group (70) arranged in parallel. When the second synchronizer (31) is engaged on the left side, it is connected to the third transmission group (70). The hybrid powertrain also includes a braking unit (32), which is connected to the braking unit (32) when the right side of the second synchronizer (31) is engaged; The hybrid powertrain also includes a first synchronizer (80) for transmitting power from the generator (10) or the engine (30) to the output shaft (40). The generator has two engagement states, and different gears are engaged through the first synchronizer (80) and the second synchronizer (31); The hybrid powertrain includes an ECVT mode: when SOC≤30% and vehicle speed≥60km / h, the vehicle has insufficient remaining battery power and requires medium to high speeds, the power route is: engine (30) → planetary gear mechanism (90) → first synchronizer (80) → second transmission group (60) → generator (10) to generate electricity; engine (30) → planetary gear mechanism (90) → output shaft (40).

2. The hybrid powertrain system as described in claim 1, characterized in that, The first transmission assembly (50) includes a first gear (51), which is connected to the output end of the drive motor (20); The output shaft (40) is provided with a third gear (41), and the first gear (51) is connected to the third gear (41) in a transmission connection.

3. The hybrid powertrain system as described in claim 2, characterized in that, The first transmission assembly (50) further includes at least one second gear (52) that is transmissionally connected between the first gear (51) and the third gear (41).

4. The hybrid powertrain system as described in claim 3, characterized in that, The planetary gear mechanism (90) includes a planet carrier (94), a sun gear (93), and a gear ring (92). The first synchronizer (80) is connected to the sun gear (93) in a transmission connection. When the right side of the first synchronizer (80) is engaged, it is connected to the second transmission group (60) in a transmission connection. The gear ring (92) is connected to the second gear (52) in a transmission connection.

5. The hybrid powertrain system as described in claim 3, characterized in that, The planetary gear mechanism (90) includes a planet carrier (94), a sun gear (93), and a gear ring (92). The sun gear (93) is connected to the second transmission group (60), and the gear ring (92) is connected to the first synchronizer (80). When the right side of the first synchronizer (80) is engaged, it is connected to the second gear (52).

6. The hybrid powertrain system as described in claim 3, characterized in that, The planetary gear mechanism (90) includes a planet carrier (94), a sun gear (93), and a gear ring (92), wherein the sun gear (93) is connected to the second transmission group (60) for transmission. The first synchronizer (80) is connected to the second gear (52) in a transmission connection, and the right side of the first synchronizer (80) is connected to the gear ring (92) in a transmission connection.

7. The hybrid powertrain system as described in claim 3, characterized in that, The hybrid powertrain also includes a transmission assembly (100) that is connected to a third gear (41) on the output shaft (40), the transmission assembly (100) including at least one transmission gear (101).

8. The hybrid powertrain system as described in claim 7, characterized in that, The planetary gear mechanism (90) includes a planet carrier (94), a sun gear (93), and a gear ring (92). The first synchronizer (80) is connected to the sun gear (93) in a transmission connection. When the right side of the first synchronizer (80) is engaged, it is connected to the second transmission group (60) in a transmission connection. The gear ring (92) is connected to the transmission gear (101) in a transmission connection.

9. The hybrid powertrain system as described in claim 7, characterized in that, The planetary gear mechanism (90) includes a planet carrier (94), a sun gear (93), and a gear ring (92). The sun gear (93) is connected to the second transmission group (60), and the gear ring (92) is connected to the first synchronizer (80). When the right side of the first synchronizer (80) is engaged, it is connected to the transmission gear (101).

10. The hybrid powertrain system as claimed in claim 7, characterized in that, The planetary gear mechanism (90) includes a planet carrier (94), a sun gear (93), and a gear ring (92), wherein the sun gear (93) is connected to the second transmission group (60) for transmission. The first synchronizer (80) is connected to the transmission gear (101) in a transmission connection, and the right side of the first synchronizer (80) is connected to the gear ring (92) in a transmission connection.

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