CN222080522U - Three-gear double-motor electric drive bridge - Google Patents
Three-gear double-motor electric drive bridge Download PDFInfo
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- CN222080522U CN222080522U CN202420069477.4U CN202420069477U CN222080522U CN 222080522 U CN222080522 U CN 222080522U CN 202420069477 U CN202420069477 U CN 202420069477U CN 222080522 U CN222080522 U CN 222080522U
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Abstract
三挡双电机电驱桥，包括驱动电机一、与驱动电机一传动连接且具有两个传动挡位的输入轴组件、与输入轴组件的两个传动挡位分别啮合连接的中间轴组件和与中间轴组件啮合连接的差速器，其特征在于：还包括驱动电机二，驱动电机二与中间轴组件传动连接，差速器为带有强制锁止功能的强制锁止防滑差速器，差速器和输入轴组件平行设置在中间轴组件的上下两侧，驱动电机一和电驱动机二设置在中间轴组件的左右两侧。本实用新型实现三个挡位的选换挡控制，提高驱动桥效率，降低能耗，提高续航电程，实现动力不中断换档，提高车辆的通过性能，减小空间占用率，有利于整车布置。
The three-speed dual-motor electric drive axle comprises a drive motor 1, an input shaft assembly which is transmission-connected with the drive motor 1 and has two transmission gears, an intermediate shaft assembly which is respectively meshed with the two transmission gears of the input shaft assembly, and a differential which is meshed with the intermediate shaft assembly, and is characterized in that: it also comprises a drive motor 2, which is transmission-connected with the intermediate shaft assembly, the differential is a forced locking anti-slip differential with a forced locking function, the differential and the input shaft assembly are arranged in parallel on the upper and lower sides of the intermediate shaft assembly, and the drive motor 1 and the electric drive motor 2 are arranged on the left and right sides of the intermediate shaft assembly. The utility model realizes the gear selection and shifting control of three gears, improves the efficiency of the drive axle, reduces energy consumption, increases the cruising range, realizes gear shifting without power interruption, improves the vehicle's passing performance, reduces the space occupancy rate, and is beneficial to the layout of the whole vehicle.
Description
Technical Field
The utility model relates to a three-gear double-motor drive bridge, and belongs to the technical field of motor drive bridges.
Background
The electric drive axle can integrate the driving motor, the gearbox, the transmission shaft and the axle into a whole, so that the system volume can be reduced, the mechanical transmission efficiency of the whole driving system can be improved, and the weight of the whole vehicle can be reduced. Along with the continuous application of new energy automobile technology to commercial vehicles, the first system of the high-transmission-efficiency and high-structure integrated electric drive axle becomes the main stream of whole vehicle matching. The two-gear electric drive axle can improve the problems caused by the one-gear electric drive axle to a great extent, the low-gear is provided with a large transmission speed ratio to provide enough power for the vehicle, the high-gear is provided with a small transmission speed ratio to provide enough speed for the vehicle, the requirement on the motor can be reduced, the motor size is reduced, and the motor and electric control cost is reduced. However, when the actual speed ratio is configured, in order to meet the requirements of the highest speed and the maximum climbing power, the ratio between the high gear speed ratio and the low gear speed ratio is required to be very large, so that the vehicle is unsmooth in gear shifting, obvious setbacks are generated, the time occupied ratio of the vehicle under the extremely low speed and extremely high speed working conditions is very small, the situation that the vehicle is insufficient in low gear speed and insufficient in high gear power is caused when the vehicle runs under most working conditions, and the driving efficiency is poor. Compared with the scheme of adding a gearbox by a single motor, the double-motor double-gear electric drive axle has the advantages of improving the drive efficiency, but in the technical scheme of two or more gears of the double-motor, most of the multiple-gear electric drive axle structures have power interruption during gear shifting, the risk of gear shifting and sliding on a ramp, and the problems that the existing electric drive axle assembly is poor in slipping trafficability and complex in structure of the electric drive axle when in muddy, soft soil road or no road area and difficult in whole vehicle arrangement are also existed.
Disclosure of utility model
The three-gear double-motor electric drive bridge provided by the utility model realizes the gear selection and shift control of three gears, enlarges the high-efficiency interval of the electric drive bridge, improves the efficiency of the drive bridge, reduces energy consumption, improves the endurance range, realizes the power without interrupting gear shifting, avoids the risk caused by the interruption of gear shifting power, improves the passing performance of a vehicle, reduces the axial size of the electric drive bridge, facilitates the installation and arrangement of a motor, reduces the space occupation rate, and is beneficial to the arrangement of the whole vehicle.
In order to achieve the above purpose, the utility model adopts the following technical scheme:
The three-gear double-motor electric drive axle comprises a first driving motor, an input shaft assembly which is in transmission connection with the first driving motor and provided with two transmission gears, an intermediate shaft assembly which is in meshing connection with the two transmission gears of the input shaft assembly respectively, and a differential mechanism which is in meshing connection with the intermediate shaft assembly.
Preferably, the input shaft assembly comprises an input shaft connected with an output end of the driving motor, a first-gear driving gear rotatably arranged on the input shaft, a second-gear driving gear rotatably arranged on the input shaft, and a synchronizer arranged between the first-gear driving gear and the second-gear driving gear and synchronously rotating along with the input shaft, wherein the synchronizer moves leftwards and can be meshed with the first-gear driving gear, and moves rightwards and can be meshed with the second-gear driving gear.
Preferably, the intermediate shaft assembly comprises an intermediate shaft connected with the two output ends of the driving motor and parallel to the input shaft, a first-gear driven gear fixed on the intermediate shaft and meshed with the first-gear driving gear, a second-gear driven gear fixed on the intermediate shaft and meshed with the second-gear driving gear, and a main reduction driving gear fixed on the intermediate shaft and connected with the differential mechanism.
Preferably, the left end of the input shaft is connected with the first output end of the driving motor, and the right end of the intermediate shaft is connected with the second output end of the driving motor.
Preferably, the differential mechanism comprises a main driven gear connected with the main driven gear, a differential shell fixed with the main driven gear, a planetary gear arranged in the differential shell, a half shaft gear meshed with the planetary gear, a half shaft fixed with the half shaft gear and parallel to the intermediate shaft, a half shaft locking gear fixed on one side half shaft, a differential lock fixed gear fixed with the main driven gear, and a meshing gear sleeve in spline connection with the differential lock fixed gear, wherein the half shaft locking gear is coaxially separated from the meshing gear sleeve, and the meshing gear sleeve moves leftwards on the differential lock fixed gear and can be meshed with the half shaft locking gear.
The beneficial effects of the utility model are as follows:
According to the three-gear double-motor electric drive axle disclosed by the utility model, the first driving motor is in transmission connection with the input shaft assembly, the second driving motor is in transmission connection with the intermediate shaft assembly, when the input shaft assembly is in neutral gear and the first driving motor is not in transmission, the second driving motor drives the differential mechanism to move to output power, a third transmission gear is formed, the gear selection and shift control of the three gears is realized, the high-efficiency interval of the electric drive axle is enlarged through the power coordination distribution and control of the first driving motor and the second driving motor, the efficiency of the drive axle is improved, the energy consumption is reduced, the endurance range is improved, the risk caused by power interruption is avoided by using the second driving motor to provide driving force when the input shaft assembly shifts gears, the differential function of the differential mechanism is forced to be locked through the forced locking function of the differential mechanism when the differential mechanism slides, the differential mechanism and the input shaft assembly are arranged on the upper side and the lower side of the intermediate shaft assembly in parallel, the first driving motor and the second driving motor are arranged on the left side and the right side of the intermediate shaft assembly, the arrangement structure of the parallel shaft and the two side connecting motors is formed, the axial dimension of the electric drive axle is reduced, the arrangement size of the electric drive axle is convenient, and the whole vehicle arrangement space is reduced, and the occupied space is convenient.
Drawings
Fig. 1 is a schematic diagram of a three-gear double-motor drive bridge in an embodiment.
Detailed Description
An embodiment of the present utility model will be described in detail with reference to fig. 1.
The three-gear double-motor electric drive axle comprises a first driving motor 1, an input shaft assembly 2 which is in transmission connection with the first driving motor 1 and provided with two transmission gears, an intermediate shaft assembly 3 which is in meshing connection with the two transmission gears of the input shaft assembly 2 respectively, and a differential mechanism 4 which is in meshing connection with the intermediate shaft assembly 3, and is characterized by further comprising a second driving motor 5, wherein the second driving motor 5 is in transmission connection with the intermediate shaft assembly 3, the differential mechanism 4 is a forced locking anti-slip differential with a forced locking function, the differential mechanism 4 and the input shaft assembly 2 are arranged on the upper side and the lower side of the intermediate shaft assembly 3 in parallel, and the first driving motor 1 and the second electric driving motor 5 are arranged on the left side and the right side of the intermediate shaft assembly 3.
The three-gear double-motor electric drive bridge is characterized in that the first driving motor 1 is in transmission connection with the input shaft assembly 2, the input shaft assembly 2 is provided with two transmission gears, the second driving motor 5 is in transmission connection with the middle shaft assembly 3, when the first driving motor 1 is in neutral gear and the first driving motor 1 is not in transmission, the second driving motor 5 drives the middle shaft assembly 3 to drive the differential 4 to move to output power, a third transmission gear is formed, the gear selection and shift control of the three gears is realized, the power coordination distribution and control of the first driving motor 1 and the second driving motor 5 are adopted, the high efficiency interval of the electric drive bridge is enlarged, the driving bridge efficiency is improved, the energy consumption is reduced, the endurance range is improved, when the input shaft assembly 2 shifts gears, the driving motor II 5 provides driving force to realize that power does not interrupt the gear shifting, the risk caused by the gear shifting power interruption is avoided, when the differential mechanism slips, the differential mechanism function of the differential mechanism is forced to be locked through the forced locking function of the differential mechanism 4, the passing performance of a vehicle is improved, the differential mechanism 4 and the input shaft assembly 2 are arranged on the upper side and the lower side of the intermediate shaft assembly 3 in parallel, the driving motor I1 and the driving motor II 5 are arranged on the left side and the right side of the intermediate shaft assembly 3, an arrangement structure of connecting motors on the parallel shafts and the two sides is formed, the axial size of an electric drive bridge is reduced, the motor installation arrangement is facilitated, the space occupation rate is reduced, and the arrangement of the whole vehicle is facilitated.
The input shaft assembly 2 comprises an input shaft 21 connected with the output end of a first driving motor 1, a first-gear driving gear 22 rotatably arranged on the input shaft 21, a second-gear driving gear 23 rotatably arranged on the input shaft 21, and a synchronizer 24 arranged between the first-gear driving gear and the second-gear driving gear and synchronously rotating along with the input shaft 21, wherein the synchronizer 24 moves leftwards and can be meshed with the first-gear driving gear 22, and moves rightwards and can be meshed with the second-gear driving gear 23. The first gear driving gear 22 and the second gear driving gear 23 are rotatably mounted on the input shaft 21 through a hollow shaft, the first gear driving gear and the second gear driving gear are not driven to rotate by the rotation of the input shaft 21 when the synchronizer 24 is in the neutral position and are not meshed with the first gear driving gear and the second gear driving gear, and the first gear driving gear 22 or the second gear driving gear 23 synchronously rotates along with the input shaft 21 only when the synchronizer 24 is meshed with the first gear driving gear and the second gear driving gear, so that power is transmitted to the intermediate shaft assembly 3.
The intermediate shaft assembly 3 includes an intermediate shaft 31 connected to the output end of the second drive motor 5 and parallel to the input shaft 21, a first-gear driven gear 32 fixed on the intermediate shaft 31 and meshed with the first-gear driving gear 22, a second-gear driven gear 33 fixed on the intermediate shaft 31 and meshed with the second-gear driving gear 23, and a main reduction driving gear 34 fixed on the intermediate shaft 31 and connected with the differential 4. When the synchronizer 24 is meshed with the first-gear driving gear 22, the power of the first driving motor 1 is transmitted to the differential 4 through the input shaft 21, the synchronizer 24, the first-gear driving gear 22, the first-gear driven gear 32, the intermediate shaft 31 and the main reduction driving gear 34 to form first-gear transmission; when the synchronizer 24 is meshed with the second-gear driving gear 23, the power of the first driving motor 1 is transmitted to the differential through the input shaft 21, the synchronizer 24, the second-gear driving gear 23, the second-gear driven gear 33, the middle shaft 31 and the main reduction driving gear 34 to form second-gear transmission, the first driving motor 1 plays a main driving role in the process of first-gear transmission or second-gear transmission, the second driving motor 5 plays an auxiliary driving role, the output torque of the second driving motor 5 is coordinated, the first driving motor 1 always works in the most efficient area to improve the driving axle efficiency and reduce the energy consumption, the synchronizer 24 is in a middle neutral position, when the first driving motor 1 does not transmit, the middle shaft 31 is driven by the second driving motor 5 to rotate to enable the main reduction driving gear 34 to drive the differential 4 to move to output power, a third gear is formed, the electric drive axle is simultaneously transmitted in the process of bearing low-speed and low-speed climbing and acceleration stages, the second driving motor 5 only works in the high-speed cruising stage, the loss of a battery is reduced, the range of the input shaft assembly 2 is shifted from the first gear transmission to the second gear transmission or the second driving motor 5, and the driving force is not interrupted in the process of driving is ensured.
The left end of the input shaft 21 is connected with the output end of the first driving motor 1, and the right end of the middle shaft 31 is connected with the output end of the second driving motor 5. The first driving motor 1 is connected to the left end of the input shaft 21, the second driving motor is connected to the right end of the intermediate shaft 31, the input shaft 31 is parallel to the intermediate shaft 31, an arrangement structure of parallel shafts and motors connected to two sides is formed, the axial size of the electric drive bridge is reduced, the motor installation arrangement is facilitated, the space occupation rate is reduced, and the whole vehicle arrangement is facilitated.
Wherein the differential 4 comprises a main driven gear 41 connected with the main driven gear 34, a differential case 42 fixed with the main driven gear 41, planetary gears 43 arranged in the differential case 42, a half shaft gear 44 meshed with the planetary gears 43, a half shaft 45 fixed with the half shaft gear 44 and parallel to the intermediate shaft 31, a half shaft locking gear 46 fixed on one side half shaft 45, and a differential lock fixed gear 47 fixed with the main driven gear 41, an engaging tooth sleeve 48 spline-connected with the differential lock fixed gear 47, wherein the half shaft locking gear 46 is coaxially spaced from the engaging tooth sleeve 48, and the engaging tooth sleeve 48 moves leftwards on the differential lock fixed gear 47 to be engaged with the half shaft locking gear 46. In the initial state, the half-shaft locking gear 46 is separated from the meshing gear sleeve 48 and is not contacted, the differential 4 has a normal differential function, when the differential slips, the meshing gear sleeve 48 is controlled to move leftwards on the differential locking gear 47 and is meshed with the half-shaft locking gear 46, so that the half-shaft locking gear 46, the half shaft 45 on one side and the differential 42 form integral rotation, the differential function of the differential is locked forcibly, and the half shafts on two sides synchronously rotate to output power, thereby improving the passing performance of a vehicle.
The foregoing disclosure of embodiments of the present utility model has been fully described with reference to the accompanying drawings, in which it is to be understood that the embodiments described are merely some of the embodiments of the utility model. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.
Claims (5)
1. The three-gear double-motor electric drive axle comprises a first driving motor, an input shaft assembly which is in transmission connection with the first driving motor and provided with two transmission gears, an intermediate shaft assembly which is in meshing connection with the two transmission gears of the input shaft assembly respectively, and a differential mechanism which is in meshing connection with the intermediate shaft assembly.
2. The three-gear double-motor electric drive axle of claim 1, wherein the input shaft assembly comprises an input shaft connected with an output end of the driving motor, a first-gear driving gear rotatably mounted on the input shaft, a second-gear driving gear rotatably mounted on the input shaft, and a synchronizer mounted between the first-gear driving gear and the second-gear driving gear and synchronously rotating along with the input shaft, wherein the synchronizer moves leftwards and can be meshed with the first-gear driving gear, and moves rightwards and can be meshed with the second-gear driving gear.
3. The three-gear double-motor electric drive axle of claim 1, wherein the intermediate shaft assembly comprises an intermediate shaft connected with the two output ends of the driving motor and parallel to the input shaft, a first-gear driven gear fixed on the intermediate shaft and meshed with the first-gear driving gear, a second-gear driven gear fixed on the intermediate shaft and meshed with the second-gear driving gear, and a main reduction driving gear fixed on the intermediate shaft and connected with the differential.
4. The three-gear double-motor electric drive bridge according to claim 3, wherein the left end of the input shaft is connected with one output end of the driving motor, and the right end of the intermediate shaft is connected with two output ends of the driving motor.
5. The three-speed double motor drive axle according to claim 1, wherein the differential mechanism comprises a main driven gear connected with the main driven gear, a differential case fixed with the main driven gear, a planetary gear arranged in the differential case, a half shaft gear meshed with the planetary gear, a half shaft fixed with the half shaft gear and parallel to the intermediate shaft, a half shaft locking gear fixed on one half shaft, a differential lock fixed gear fixed with the main driven gear, and an engaging gear sleeve connected with the differential lock fixed gear in a spline manner, wherein the half shaft locking gear is coaxially separated from the engaging gear sleeve, and the engaging gear sleeve moves leftwards on the differential lock fixed gear to be engaged with the half shaft locking gear.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202420069477.4U CN222080522U (en) | 2024-01-11 | 2024-01-11 | Three-gear double-motor electric drive bridge |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202420069477.4U CN222080522U (en) | 2024-01-11 | 2024-01-11 | Three-gear double-motor electric drive bridge |
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| Publication Number | Publication Date |
|---|---|
| CN222080522U true CN222080522U (en) | 2024-11-29 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202420069477.4U Active CN222080522U (en) | 2024-01-11 | 2024-01-11 | Three-gear double-motor electric drive bridge |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN222080522U (en) |
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2024
- 2024-01-11 CN CN202420069477.4U patent/CN222080522U/en active Active
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