CN218761340U - A three-speed transmission without power interruption for electric vehicles - Google Patents

Abstract

The utility model discloses a three-speed transmission without power interruption for an electric vehicle. The second input shaft and the first input shaft are connected through a first electromagnetic clutch, and the first output shaft and the first input shaft are connected through a second-speed gear pair. The second output shaft is connected to the first output shaft through the second electromagnetic clutch, and is connected to the second input shaft through the first gear pair and the third gear pair; the synchronizer is moved and installed on the second output shaft, and is located on the first gear between the gear pair and the third gear pair; the transmission shaft and the second output shaft are connected through the gear pair of the final drive, and the differential is installed on the drive shaft and connected with the gear pair of the final drive; it can realize three gears There is no power interruption between shifts; and the shift is simple, has good shift comfort, compact structure, high transmission efficiency, and low manufacturing cost; it can significantly improve the power performance, economic performance and driving comfort performance of the vehicle.

Description

A three-speed transmission without power interruption for electric vehicles

technical field

The utility model belongs to the technical field of automobile transmissions, in particular to a three-speed transmission without power interruption for electric vehicles.

Background technique

With the large-scale use of internal combustion engine vehicles, the global oil resource crisis and environmental pollution problems continue to aggravate. In order to alleviate the energy crisis and environmental pollution problems, countries around the world have focused on the development of electric vehicles. Different from traditional internal combustion engine vehicles, electric vehicles use electric motors as the power source and are driven by electric energy. They have the advantages of energy saving, environmental protection, and high efficiency.

In the early stage of the development of electric vehicles, most of their powertrains use single-speed reducers. Due to the wide speed range of the motor, the dependence of electric vehicles on multi-speed transmissions can be reduced to a certain extent. However, the vehicle performance of an electric vehicle using a single-speed reducer is limited, such as poor dynamic performance such as acceleration time and maximum vehicle speed, and poor economic performance such as cruising range.

In addition to power performance and economic performance, shift comfort performance such as impact is also an important performance index of the vehicle. The traditional mechanical automatic transmission has the problem of power interruption during the shifting process, which makes the vehicle feel frustrated during the shifting process, resulting in poor driving experience.

Utility model content

Aiming at at least one of the above problems in the prior art of automobile transmissions, the utility model provides a three-speed transmission without power interruption for electric vehicles, the purpose of which is to significantly improve the power performance, economic performance and driving comfort performance of the vehicle.

In order to achieve the above object, the utility model adopts the following technical solutions:

A three-speed transmission without power interruption for an electric vehicle includes a first input shaft, a second input shaft, a first output shaft, a second output shaft, a synchronizer, a drive shaft and a differential. The second input shaft is connected to the first input shaft through a first electromagnetic clutch. The first output shaft is in transmission connection with the first input shaft through a second gear pair. Second output shaft The first output shaft is connected through a second electromagnetic clutch, and is connected with the second input shaft through a first-speed gear pair and a third-speed gear pair. The synchronizer is movably installed on the second output shaft, and is located between the first gear pair and the third gear pair. The transmission shaft is connected to the second output shaft through the gear pair of the final reducer. The differential is installed on the transmission shaft and connected with the gear pair of the final reducer.

Preferably, the driving motor is drivingly connected to the first input shaft.

The second-speed gear pair includes a meshed second-speed driving gear and a second-speed driven gear, the second-speed driving gear is installed on the first input shaft, and the second-speed driven gear is installed on the first on the output shaft.

The first-speed gear pair includes a meshed first-speed driving gear and a first-speed driven gear, the first-speed driving gear is installed on the second input shaft, and the first-speed driven gear is installed on the second on the output shaft.

The third-speed gear pair includes a meshing third-speed driving gear and a third-speed driven gear, the third-speed driving gear is installed on the second input shaft, and the third-speed driven gear is installed on the second on the output shaft.

The synchronizer is located between the first-speed driven gear and the third-speed driven gear.

The main reducer gear pair includes a main reducer driving gear and a main reducer driven gear that are meshed, the main reducer driving gear is installed on the second output shaft, and the final reducer driven gear is installed on the second output shaft. on the drive shaft.

The differential is connected with the driven gear of the final reducer.

The three-speed transmission without power interruption of the electric vehicle of the utility model can achieve the following beneficial effects:

The three-gear transmission without power interruption of the electric vehicle of the utility model adopts two electromagnetic clutches to carry out the power transmission of the odd-numbered gear and the even-numbered gear respectively, and controls the alternate engagement of the two electromagnetic clutches to realize the transmission between the three gears. There is no power interruption for gear shifting; the gear shifting is simple, has good shifting comfort, compact structure, high transmission efficiency, and low manufacturing cost; it can significantly improve the power performance, economic performance and driving comfort performance of the vehicle.

Description of drawings

The accompanying drawings described here are used to provide a further understanding of the utility model and constitute a part of the utility model. The schematic embodiments of the utility model and their descriptions are used to explain the utility model and do not constitute an improper limitation of the utility model . In the attached picture:

Fig. 1 is the structural representation of the three-gear transmission without power interruption of the electric vehicle of the present utility model,

Numbers in the figure: 1 is the driving motor, 2 is the first input shaft, 3 is the second-speed driving gear, 4 is the first electromagnetic clutch, 5 is the second input shaft, 6 is the first-speed driving gear, 7 is the third-speed driving gear , 8 is the first output shaft, 9 is the second gear driven gear, 10 is the second electromagnetic clutch, 11 is the second output shaft, 12 is the driving gear of the main reducer, 13 is the first gear driven gear, 14 is the synchronizer , 15 is the third gear driven gear, 16 is the transmission shaft, 17 is the differential, and 18 is the driven gear of the main reducer.

Detailed ways

In order to make the purpose, technical solution and advantages of the utility model clearer, the technical solution of the utility model will be clearly and completely described below in conjunction with specific embodiments of the utility model and corresponding drawings. Apparently, the described embodiments are only some of the embodiments of the present invention, but not all of them. Based on the embodiments of the present utility model, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the scope of protection of the present utility model.

The technical solutions provided by the various embodiments of the present invention will be described in detail below in conjunction with the accompanying drawings.

Example

As shown in Figure 1, a kind of three-speed transmission without power interruption for electric vehicles includes a first input shaft 2, a second input shaft 5, a first output shaft 8, a second output shaft 11, a synchronizer 14, a transmission shaft 16 and Differential 17. The second input shaft 5 is connected with the first input shaft 2 through the first electromagnetic clutch 4, and the first output shaft 8 is connected with the first input shaft 2 through the second gear pair transmission; the second output shaft 11 is connected with the first output shaft 8 through The second electromagnetic clutch 10 is connected, and is connected with the second input shaft 5 through the first gear pair and the third gear pair; the synchronizer 14 is moved and installed on the second output shaft 11, and is located at the first gear pair and the third gear Between the pairs: the transmission shaft 16 is connected with the second output shaft 11 through the gear pair of the final reducer, and the differential 17 is installed on the drive shaft 16 and connected with the gear pair of the final reducer.

In the three-speed transmission without power interruption for electric vehicles in this embodiment, the first input shaft 2 transmits power to the second input shaft 5 through the first electromagnetic clutch 4 , and transmits power to the first output shaft 8 through the second gear pair. The first output shaft 8 is connected to the second input shaft 5 through the second electromagnetic clutch 10 . The second input shaft 5 transmits power to the second output shaft 11 through the first gear pair and the third gear pair. The second output shaft 11 transmits power to the propeller shaft 16 through the gear pair of the final drive. The synchronizer 14 can move axially along the second output shaft 11 and can engage with the gear pair of the first speed and the gear pair of the third speed respectively.

The three-speed transmission without power interruption of the electric vehicle in this embodiment performs the power transmission of the first gear and the third gear through the first electromagnetic clutch 4 , and performs the power transmission of the second gear through the second electromagnetic clutch 10 . By controlling the alternate engagement of the first electromagnetic clutch 4 and the second electromagnetic clutch 10 , shifting without power interruption among the three gears can be realized.

In some embodiments, the driving motor 1 can be drivingly connected to the first input shaft 2 . The second gear pair, the first gear pair and the third gear pair can be arranged sequentially.

The second-gear gear pair can include a second-gear driving gear 3 and a second-gear driven gear 9 that are engaged, the second-gear driving gear 3 is installed on the first input shaft 2, and the second-gear driven gear 9 is installed on the first output shaft 8 . The second gear driving gear 3 can be coaxial with the first input shaft 2 , and the second gear driven gear 9 can be coaxial with the first output shaft 8 .

The first-gear gear pair can include a first-gear driving gear 6 and a first-gear driven gear 13, the first-gear driving gear 6 is installed on the second input shaft 5, and the first-gear driven gear 13 is installed on the second output shaft 11 . The first gear driving gear 6 can be coaxial with the second input shaft 5 , and the first gear driven gear 13 can be coaxial with the second output shaft 11 .

The third-gear gear pair can include a third-gear driving gear 7 and a third-gear driven gear 15 that are engaged, the third-gear driving gear 7 is installed on the second input shaft 5, and the third-gear driven gear 15 is installed on the second output shaft 11 . The third gear driving gear 7 can be coaxial with the second input shaft 5 , and the third gear driven gear 15 can be coaxial with the second output shaft 11 .

The synchronizer 14 may be located between the first speed driven gear 13 and the third speed driven gear 15 .

The main reducer gear pair can include the main reducer driving gear 12 and the final reducer driven gear 18 that are meshed, the final reducer driving gear 12 is installed on the second output shaft 11, and the final reducer driven gear 18 is installed on the transmission on axis 16. The final drive gear 12 can be coaxial with the second output shaft 11 , and the final drive driven gear 18 can be coaxial with the transmission shaft 16 .

The differential 17 may be connected with a final driven gear 18 .

The final drive gear 12 can be located between the second gear driven gear 9 and the first gear driven gear 13 .

With reference to Fig. 1, the above-mentioned electric vehicle has no power to interrupt the three-speed transmission, the first input shaft 2 is fixedly connected to the second-speed driving gear 3, and the right end of the first input shaft 2 and the left end of the second input shaft 5 pass through the first electromagnetic clutch 4 connect. The first gear driving gear 6 and the third gear driving gear 7 are fixedly connected successively on the second input shaft 5, the second gear driven gear 9 is fixedly connected on the first output shaft 8, and the right end of the first output shaft 8 is connected with the second output shaft 11 The left end of is connected by the second electromagnetic clutch 10. The main reducer drive gear 12, the first gear driven gear 13, the synchronizer 14 and the third gear driven gear 15 are successively installed on the second output shaft 11, and the first gear driven gear 13 and the third gear driven gear 15 are sleeved on the second gear. On the second output shaft 11 , the driving gear 12 of the main reducer and the synchronizer 14 are fixedly connected to the second output shaft 11 . The synchronizer 14 is axially movable along the second output shaft 11 and engages with the first-speed driven gear 13 and the third-speed driven gear 15 respectively. A differential 17 and a final drive driven gear 18 are installed on the transmission shaft 16 , and the differential 17 is fixedly connected with the final drive driven gear 18 . The first gear driving gear 6, the second gear driving gear 3, the third gear driving gear 7 and the main reducer driving gear 12 are respectively connected with the first gear driven gear 13, the second gear driven gear 9, the third gear driven gear 15 and the main reducer The driven gear 18 meshes.

When the above-mentioned electric vehicle has no power interruption and the three-speed transmission is in gear, the working status and power transmission route of each component are as follows:

When the first gear is in gear: the first electromagnetic clutch 4 is engaged, the synchronizer 14 is engaged with the first gear driven gear 13, and the second electromagnetic clutch 10 is disengaged. The power of the drive motor 1 is transmitted to Transmission shaft 16.

When the second gear is in gear: the second electromagnetic clutch 10 is engaged, the first electromagnetic clutch 4 is disengaged, and the synchronizer 14 is disengaged. The power of the driving motor 1 is transmitted to the transmission shaft 16 through the second gear driving gear 3 , the second gear driven gear 9 , the second electromagnetic clutch 10 , the final drive gear 12 , the final drive driven gear 18 and the differential 17 .

When the third gear is in gear: the first electromagnetic clutch 4 is engaged, the synchronizer 14 is engaged with the third gear driven gear 15, and the second electromagnetic clutch 10 is separated. The power of the driving motor 1 is transmitted to Transmission shaft 16.

When in reverse gear: the working state and power transmission route of each component are the same as when the first gear is in gear, and the drive shaft 16 is driven to reverse through the reverse rotation of the driving motor 1 to realize the reverse gear function.

The process of upshifting without power interruption of the above-mentioned electric vehicle without power interruption three-speed transmission is as follows:

When the first gear is upgraded to the second gear: first, the first electromagnetic clutch 4 starts to disengage, the second electromagnetic clutch 10 starts to engage, and the two electromagnetic clutches enter the slipping state at the same time. At this time, the power of the drive motor 1 is simultaneously transmitted through the power transmission lines of the first gear and the second gear. As the first electromagnetic clutch 4 is gradually disengaged and the second electromagnetic clutch 10 is gradually engaged, the power transmitted by the power transmission line of the first gear gradually decreases, while the power transmitted by the power transmission line of the second gear gradually increases. Then, when the power transmitted by the power transmission line of the first gear drops to zero, the first electromagnetic clutch 4 is completely disengaged, and the second electromagnetic clutch 10 is fully engaged. At this moment, the power of the driving motor 1 is completely transmitted through the power transmission route of the second gear. Finally, the synchronizer 14 is separated from the driven gear 13 of the first gear, and the gear is removed from the first gear, and the transmission is promoted to the second gear.

When the second gear is upgraded to the third gear: first, the synchronizer 14 is engaged with the third gear driven gear 15 . Then, the second electromagnetic clutch 10 starts to disengage, the first electromagnetic clutch 4 starts to engage, and the two electromagnetic clutches enter the slipping state at the same time. At this time, the power of the drive motor 1 is simultaneously transmitted through the power transmission lines of the second gear and the third gear. As the second electromagnetic clutch 10 is gradually disengaged and the first electromagnetic clutch 4 is gradually engaged, the power transmitted by the power transmission line of the second gear gradually decreases, while the power transmitted by the power transmission line of the third gear gradually increases. Finally, when the power transmitted by the power transmission line of the second gear drops to zero, the second electromagnetic clutch 10 is completely disengaged, and the first electromagnetic clutch 4 is fully engaged. At this moment, the power of the driving motor 1 is completely transmitted through the power transmission route of the third gear, the second gear is removed, and the transmission is promoted to the third gear.

The process of downshifting without power interruption of the above-mentioned electric vehicle without power interruption three-speed transmission is as follows:

The second gear is lowered from the third gear: first, the first electromagnetic clutch 4 starts to disengage, the second electromagnetic clutch 10 starts to engage, and the two electromagnetic clutches enter the sliding friction state at the same time. At this time, the power of the drive motor 1 is simultaneously transmitted through the power transmission lines of the third gear and the second gear. As the first electromagnetic clutch 4 is gradually disengaged and the second electromagnetic clutch 10 is gradually engaged, the power transmitted by the power transmission line of the third gear gradually decreases, while the power transmitted by the power transmission line of the second gear gradually increases. Then, when the power transmitted by the power transmission route of the third gear drops to zero, the first electromagnetic clutch 4 is completely disengaged, and the second electromagnetic clutch 10 is fully engaged. At this moment, the power of the driving motor 1 is completely transmitted through the power transmission route of the second gear, and finally, the synchronizer 14 is separated from the driven gear 15 of the third gear, and the gear is removed from the third gear, and the speed changer drops to the second gear.

Second gear down first gear: First, the synchronizer 14 is engaged with the first gear driven gear 13 . Then, the second electromagnetic clutch 10 starts to disengage, the first electromagnetic clutch 4 starts to engage, and the two electromagnetic clutches enter the slipping state at the same time. At this time, the power of the drive motor 1 is simultaneously transmitted through the power transmission lines of the second gear and the first gear. As the second electromagnetic clutch 10 is gradually disengaged and the first electromagnetic clutch 4 is gradually engaged, the power transmitted by the power transmission line of the second gear gradually decreases, while the power transmitted by the power transmission line of the first gear gradually increases. Finally, when the power transmitted by the power transmission line of the second gear drops to zero, the second electromagnetic clutch 10 is completely disengaged, and the first electromagnetic clutch 4 is fully engaged. At this time, the power of the drive motor 1 is completely transmitted through the power transmission route of the first gear, and the gear is removed from the second gear, and the transmission drops to the first gear.

The above are only examples of the present application, and are not intended to limit the present application. For those skilled in the art, various modifications and changes may occur in this application. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included within the scope of the claims of the present application.

Claims (10)

1. A three-speed transmission without power interruption for electric vehicles, characterized in that it comprises: first input shaft, a second input shaft connected to the first input shaft through a first electromagnetic clutch, The first output shaft is connected to the first input shaft through the second gear pair, The second output shaft is connected to the first output shaft through a second electromagnetic clutch, and is connected to the second input shaft through a first-speed gear pair and a third-speed gear pair, a synchronizer, which is movably mounted on the second output shaft and located between the first gear pair and the third gear pair, a transmission shaft, which is connected to the second output shaft through the gear pair of the final reducer, The differential is installed on the transmission shaft and connected with the gear pair of the final reducer. 2. The three-speed transmission without power interruption for electric vehicles according to claim 1, wherein the second-speed gear pair includes a second-speed driving gear and a second-speed driven gear that are engaged, and the second-speed driving gear is installed On the first input shaft, the second speed driven gear is mounted on the first output shaft. 3. The three-gear transmission without power interruption for electric vehicles according to claim 2, wherein the first gear pair includes a first gear driving gear and a first gear driven gear that are engaged, and the first gear driving gear is installed On the second input shaft, the first speed driven gear is mounted on the second output shaft. 4. The three-gear transmission without power interruption for electric vehicles according to claim 3, wherein the third-gear gear pair includes a third-gear driving gear and a third-gear driven gear that are engaged, and the third-gear driving gear is installed On the second input shaft, the third speed driven gear is mounted on the second output shaft. 5. The three-speed transmission without power interruption for electric vehicles according to claim 4, wherein the synchronizer is located between the first-speed driven gear and the third-speed driven gear. 6. The three-speed transmission without power interruption for electric vehicles according to claim 4, characterized in that, the gear pair of the final reducer includes a driving gear of the final reducer and a driven gear of the final reducer that are meshed, and the final reducer The drive gear of the final reducer is installed on the second output shaft, and the driven gear of the final reducer is installed on the transmission shaft. 7. The three-speed transmission without power interruption for an electric vehicle according to claim 6, wherein the differential is connected with the driven gear of the final drive. 8. The three-speed transmission without power interruption for electric vehicles according to claim 6, wherein the driving gear of the final drive is located between the second-speed driven gear and the first-speed driven gear. 9. The three-speed transmission without power interruption for electric vehicles according to any one of claims 1-8, wherein the second gear pair, the first gear pair and the third gear pair are arranged in sequence cloth. 10. The three-speed transmission without power interruption for an electric vehicle according to any one of claims 1-8, characterized in that the drive motor is drivingly connected to the first input shaft.

Images