阅读说明：本技术 一种可变架构电驱动力系统 (Variable-architecture electric driving system ) 是由 陈晓宇 谢巍 姚伟科 汪训定 于 2021-06-09 设计创作，主要内容包括：本发明公开了一种可变架构电驱动力系统,包括驱动电机、减速器和控制器,减速器上设有三相接线座,控制器上设有与三相接线座插接配合的三相接线头,所述三相接线座和三相接线头为圆形,所述控制器水平设置。(1)对于不同架构无需改变接口、减速器、控制器的结构,零件通用化程度高,降低生产成本；(2)采用水平布置的控制器更有利于保护这些电子元器件在整车经常发生震动冲击的工作环境下,保证高可靠性；(3)油路循环流量始终保持最佳状态；(4)电驱动力系统不同角度架构提升车内空间利用率；(5)设置水平检测装置保证装配和行驶时控制器的水平状态。(The invention discloses a variable-framework electric drive power system which comprises a drive motor, a speed reducer and a controller, wherein a three-phase wiring seat is arranged on the speed reducer, a three-phase wiring head which is in plug-in fit with the three-phase wiring seat is arranged on the controller, the three-phase wiring seat and the three-phase wiring head are circular, and the controller is horizontally arranged. (1) The structures of an interface, a speed reducer and a controller do not need to be changed for different architectures, the part universalization degree is high, and the production cost is reduced; (2) the controller which is horizontally arranged is more favorable for protecting the electronic components under the working environment that the whole vehicle is frequently shocked and impacted, and high reliability is ensured; (3) the oil circuit circulating flow is always kept in an optimal state; (4) the electric drive power system is constructed at different angles to improve the space utilization rate in the vehicle; (5) a level detection device is arranged to ensure the level state of the controller during assembly and running.)

1. The utility model provides a variable framework electricity drives driving system, includes driving motor (1), reduction gear (2) and controller (3), is equipped with three-phase connection terminal (21) on reduction gear (2), is equipped with on controller (3) and pegs graft complex three-phase connector (31) with three-phase connection terminal (21), characterized by, three-phase connection terminal (21) and three-phase connector (31) are circular, controller (3) level sets up.

2. The variable-architecture electric drive system as claimed in claim 1, wherein a connecting line between the axis of the speed reducer (2) and the axis of the drive motor (1) forms an angle of 0 ° to 30 ° with the horizontal direction.

3. The variable-architecture electric drive power system as claimed in claim 1, wherein an oil inlet pipe joint (5) and an oil outlet pipe joint (4) are circumferentially arranged between the drive motor (1) and the speed reducer (2), the oil inlet pipe joint (5) is higher than the oil outlet pipe joint (4), an included angle between a connecting line from the center of the oil inlet pipe joint (5) to the axis of the drive motor (1) and a horizontal direction is 23-67 degrees, and an included angle between a connecting line from the center of the oil outlet pipe joint (4) to the axis of the drive motor (1) and a vertical direction is ± 26 degrees.

4. A variable-architecture electric drive system according to claim 1, characterized in that level detection means are provided between the three-phase terminal block (21) and the three-phase terminal head (31).

5. The variable-architecture electric driving system as claimed in claim 4, wherein the horizontal detection device comprises a ring-shaped tube (32) circumferentially arranged on the three-phase connector lug (31), a pressure block (321) is arranged in the ring-shaped tube (32) in a rolling manner, pressure sensors (322) are symmetrically arranged at the bottom of the ring-shaped tube (32) in a direction perpendicular to the extension direction of the controller (3), and the area between the pressure sensors (322) is larger than the contact area of the pressure block (321) and the bottom surface of the ring-shaped tube (32).

6. The electric driving system with the variable framework as recited in claim 4, characterized in that a movable groove (22) is formed in the inner wall of the three-phase wire holder (21), the movable groove (22) is connected with the three-phase wire holder (21) in a sliding manner in the circumferential direction, a balancing weight is arranged at the bottom of the movable groove (22), a first lower pole plate (23) and a second lower pole plate (24) are fixedly arranged in the movable groove (22), the first lower pole plate (23) and the second lower pole plate (24) are symmetrically arranged in the vertical direction, an upper pole plate (33) is arranged at the bottom of the outer wall of the three-phase wire holder (31), a central connecting line from the center of the upper pole plate (33) to the center of the three-phase wire holder (31) is perpendicular to the width direction of the controller (3), and the first lower pole plate (23), the second lower pole plate (24) and the upper pole plate (33) are all connected with the MCU.

7. A variable-architecture electric drive system according to claim 1, characterized in that angle detection means are provided between the three-phase terminal base (21) and the three-phase terminal head (31) for detecting the angle between the reducer (2) and the controller (3).

Technical Field

The invention relates to the technical field of electric automobile power systems, in particular to an electric drive power system with a variable framework.

Background

The electric driving power system generally comprises three core modules, namely a motor, a speed reducer and a controller, the available space of a user of the electric automobile becomes a selling point of product market competition, the structural layout requirement of the whole automobile is more compact, and the space of the electric driving power system around the whole automobile is very small; meanwhile, in order to avoid other part structures of the whole vehicle or meet the layout requirement of the whole vehicle, the layout of the electric drive power system is matched with the layout requirement of the whole vehicle and needs to be inclined at a certain angle. For different vehicle types, the assembly angle of the controller and the speed reducer is required to be adjusted to match the whole vehicle framework, but the existing electric drive power system is usually a fixed framework, when the inclination angle of the speed reducer and the controller is changed to match the whole vehicle boundary, the three-phase wiring structure of the controller and the speed reducer and the mounting point structure of the controller and the motor are required to be adjusted and matched along with the structure, and parts relating to interfaces and mounting points are required to be redesigned and developed, so that the production cost is increased.

For example, a "three-in-one housing structure of a controller, a reducer and a motor" disclosed in chinese patent literature, whose publication No. CN208754130U, includes a controller housing, a reducer housing and a motor housing which are integrally cast; and a radial M-shaped motor water channel is arranged in the motor shell. The utility model discloses a through setting up integrated into one piece's casing with controller, reduction gear and motor fixed for an overall structure. The electric drive power system has the disadvantages that the electric drive power system is a fixed framework, the complete matching of the whole vehicle boundary is difficult to achieve for different vehicle types, and if the included angle between the controller and the speed reducer needs to be changed, a mold needs to be cast again, so that the production cost is increased.

Disclosure of Invention

The invention aims to solve the problem that an electric drive power system in the prior art cannot be matched with the whole vehicle boundary of different vehicle types, change the structure and increase a large amount of cost, and provides a variable-structure electric drive power system, which realizes the adjustable assembling angle of a controller, improves the generalization rate of parts, reduces the cost, has wide structure range suitable for vehicle types and high reliability.

In order to achieve the purpose, the invention adopts the following technical scheme:

the utility model provides a variable framework electricity drives driving system, includes driving motor, reduction gear and controller, is equipped with the three-phase connection terminal on the reduction gear, is equipped with on the controller with three-phase connection terminal grafting complex three-phase connector lug, three-phase connection terminal and three-phase connector lug are circular, the controller level sets up.

The invention is characterized in that the three-phase wiring ports of the controller and the speed reducer are arranged in a circular shape, therefore, when the speed reducer is assembled, the three-phase wiring head of the speed reducer is inserted into the three-phase wiring seat on the speed reducer, on the premise of ensuring the horizontal arrangement of the controller, the included angle between the controller and the speed reducer is changed according to different vehicle architectures, after the angle adjustment is finished, the controller and the driving motor are connected through the bracket, and as the driving motor and the speed reducer are connected with each other, the integral fixation of an electric driving power system is finished, different electric driving power system architectures are formed, the structures of an interface, the speed reducer and the controller do not need to be changed for different architectures, the part generalization degree is high; the controller is internally provided with a plurality of core electronic components (such as IGBTs, circuit boards and the like), and due to the inherent structural characteristics of the electronic components, the horizontal arrangement is more favorable for protecting the electronic components under the working environment that the whole vehicle is frequently shocked and impacted, and the high reliability is ensured.

Preferably, the included angle between the connecting line between the axis of the speed reducer and the axis of the driving motor and the horizontal direction is 0-30 degrees.

The angle between the controller and the speed reducer is good in adaptability with a peripheral framework in the range, for example, when the electric drive assembly adopts a front-drive arrangement framework, a front engine room is provided with a plurality of other parts, such as a steering engine, a radiator, a compressor and the like, the peripheral parts are numerous, the boundary environment is complex, and the matching difficulty is high. By adopting the mode of adjusting the electrically-driven arrangement inclination angle (for example, the included angle is set to be 25 degrees), peripheral parts are avoided, more schemes for arranging the front cabin can be selected, the matching difficulty is reduced, and the space utilization efficiency is optimized; for another example, when the electric drive assembly adopts a rear drive arrangement structure, the horizontal arrangement structure is formed by adjusting the inclination angle of the electric drive arrangement to be less than 8 degrees, the Z-direction size is smaller, and more space can be released to the member cabin for users to use.

Preferably, an oil inlet pipe interface and an oil outlet pipe interface are arranged between the driving motor and the speed reducer along the circumferential direction, the oil inlet pipe interface is higher than the oil outlet pipe interface, the included angle between the connecting line from the center of the oil inlet pipe interface to the axis of the driving motor and the horizontal direction is 23-67 degrees, and the included angle between the connecting line from the center of the oil outlet pipe interface to the axis of the driving motor and the vertical direction is +/-26 degrees.

Oil-cooled motor coolant (such as gearbox lubricating oil and the like) circulates to the motor shell from the speed reducer side through the speed reducer, is sprayed to a heating area such as a motor stator rotor and the like, and flows back to an oil pool in a speed reducer cavity through an oil return pipeline under the action of gravity. The oil circuit structure is arranged along the surfaces of the motor shell and the speed reducing shell and is butted at the box closing surface of the motor and the speed reducer. When the arrangement inclination angle of the electric drive assembly is changed, the height positions of an oil inlet pipeline and an oil return pipeline which are circumferentially arranged on the motor shell are changed, so that the flow of the oil inlet and the flow of the oil return pipeline are influenced. When the included angle between the center of the oil path and the axis of the motor and the horizontal direction is in the range of 23-67 degrees, the flow of the inlet oil path is the largest, and the included angle between the connecting line of the cross section of the oil return pipe and the axis of the motor and the vertical direction is +/-26 degrees, which is the position with the largest oil return flow. When the angle range is exceeded, the oil path circulation flow of the oil cold-electricity driving can not reach the optimal state.

Preferably, a level detection device is arranged between the three-phase wire holder and the three-phase wire connector lug.

The horizontal state of the controller is constantly monitored in the assembling process and the driving process by arranging the horizontal detection device, and when the controller is in the horizontal state in the assembling process, the included angle between the speed reducer and the controller is accurately adjusted by taking the controller as a reference; during driving, the level state of the controller is monitored to ensure the reliability of the electric driving system, and preferably, an alarm system is connected to the level detection device, and when the controller is in a non-level state, the alarm system prompts an alarm until the controller is in a level state.

Preferably, the level detection device comprises an annular pipe arranged on the three-phase connector lug along the circumferential direction, pressure blocks are arranged in the annular pipe in a rolling mode, pressure sensors are symmetrically arranged at the bottom of the annular pipe along the vertical direction, and the area between the pressure sensors is larger than the contact area between the pressure blocks and the bottom surface of the annular pipe.

The symmetrical axes of the two pressure sensors are vertical to the width direction of the controller, when the controller (namely the width direction of the controller) is in a non-horizontal state, the symmetrical axes of the two pressure sensors form an included angle with the vertical direction, the pressure block always moves to the lowest point of the annular pipe under the action of gravity, at the moment, the pressure block is positioned at the lowest point in the vertical direction and presses on the pressure sensors, and the pressure sensors transmit signals in the non-horizontal state; when the rotation controller is in a horizontal state, the two pressure sensors are symmetrical along the vertical direction, the pressure block always moves to the lowest point of the annular pipe under the action of gravity, at the moment, the pressure block is positioned on the annular pipe between the two pressure sensors, and the pressure sensors cannot sense pressure.

As preferred, three-phase connection terminal inner wall is equipped with the movable groove, movable groove and three-phase connection terminal circumference sliding connection, the movable groove bottom is equipped with the balancing weight, the movable inslot internal fixation is provided with first bottom plate and second bottom plate, first bottom plate and second bottom plate set up along vertical direction symmetry, three-phase connector head outer wall bottom is equipped with the polar plate, it is perpendicular with controller width direction to go up polar plate center to three-phase connector head center line, first bottom plate, second bottom plate and last polar plate all are connected with MCU.

Another embodiment is to provide a polar plate, and a cavity taking air as a medium is formed between the three-phase wire holder and the three-phase wire connector lug. The air medium, the upper polar plate and the first lower polar plate form a first capacitor, the upper polar plate, the air medium and the second lower polar plate form a second capacitor, the angle of the upper polar plate changes along with the controller, the first lower polar plate and the second lower polar plate are always kept in a symmetrical state along with the movable groove due to the action of the balancing weight on the movable groove, when the controller is in a horizontal state, the upper polar plate does not deviate, the corresponding areas of the upper polar plate, the first lower polar plate and the second lower polar plate are 0, the sizes of the first capacitor and the second capacitor are 0, when the controller rotates, the angle of the upper polar plate deviates, if the controller rotates leftwards, the first capacitor formed by the upper polar plate and the first lower polar plate generates a capacitance value, and the size of the angle deviation is judged according to the size of the capacitance value of the first capacitor; if the first capacitor rotates towards the right side, a second capacitor formed by the upper pole plate and the second lower pole plate generates a capacitance value, the angle deviation is judged according to the capacitance value of the second capacitor, and whether the second capacitor tilts left or right is judged according to whether the first capacitor or the second capacitor generates the capacitance value.

Preferably, an angle detection device for detecting an included angle between the speed reducer and the controller is arranged between the three-phase wire holder and the three-phase wire connector.

Through setting up angle detection device, the contained angle of accurate control reduction gear and controller when the assembly.

Therefore, the invention has the following beneficial effects: (1) the structures of an interface, a speed reducer and a controller do not need to be changed for different architectures, the part universalization degree is high, and the production cost is reduced; (2) the controller which is horizontally arranged is more favorable for protecting the electronic components under the working environment that the whole vehicle is frequently shocked and impacted, and high reliability is ensured; (3) the oil circuit circulating flow is always kept in an optimal state; (4) the electric drive power system is constructed at different angles to improve the space utilization rate in the vehicle; (5) a level detection device is arranged to ensure the level state of the controller during assembly and running.

Drawings

Fig. 1 is a schematic structural diagram of a controller according to embodiment 1 of the present invention.

Fig. 2 is a schematic structural diagram of a tilt framework according to embodiment 1 of the present invention.

Fig. 3 is a schematic structural diagram of a horizontal structure according to embodiment 1 of the present invention.

Fig. 4 is a layout diagram of the electric driving and tilting architecture of the whole vehicle.

Fig. 5 is a schematic layout of the electric drive horizontal architecture of the whole vehicle of the present invention.

Fig. 6 is a schematic structural view of a level detecting device according to embodiment 2 of the present invention.

Fig. 7 is a schematic structural view of a level detecting apparatus according to embodiment 3 of the present invention.

In the figure: 1. the device comprises a driving motor, 2, a speed reducer, 21, a three-phase wire holder, 22, a movable groove, 23, a first upper polar plate, 24, a second upper polar plate, 3, a controller, 31, a three-phase connector lug, 32, a ring pipe, 321, a pressure block, 322, a pressure sensor, 33, an upper polar plate, 34, a sealing ring, 4, an oil outlet pipe interface, 5 and an oil inlet pipe interface.

Detailed Description

The invention is further described with reference to the following detailed description and accompanying drawings.

Example 1

As shown in fig. 1, a variable framework electricity drives driving system, including driving motor 1, reduction gear 2 and controller 3, driving motor 1 axle center is connected with reduction gear 2, one side top that driving motor 1 was kept away from to reduction gear 2 is equipped with circular three-phase connection base 21, be equipped with on the controller 3 with the circular three-phase connector 31 of three-phase connection base 21 grafting complex, three-phase line wiring copper bar and controller connector overlap joint and bolt-up, 3 levels of controller set up, be equipped with sealing washer 34 on the three-phase connector 31. The controller 3 is fixedly connected with the driving motor 1 through a fixed bracket. An oil inlet pipe interface 5 and an oil outlet pipe interface 4 are arranged between the driving motor 1 and the speed reducer 2 along the circumferential direction, and the oil inlet pipe interface 5 is higher than the oil outlet pipe interface 4.

As shown in fig. 2, an included angle between a connecting line between the axis of the speed reducer 2 and the axis of the driving motor 1 and the horizontal direction is 25 °, so that an inclined structure is formed. The included angle between the connecting line of the center of the oil inlet pipe joint 5 and the axis of the driving motor 1 and the horizontal direction is 44.5 degrees, and the included angle between the connecting line of the center of the oil outlet pipe joint 4 and the axis of the driving motor 1 and the vertical direction is 26 degrees.

As shown in fig. 4, the electric drive power system with the inclined structure is used for a front-wheel drive arrangement structure, and is beneficial to avoiding a steering engine, a radiator, a compressor and the like of a front cabin of an automobile.

As shown in fig. 3, an included angle between a connecting line between the axis of the speed reducer 2 and the axis of the driving motor 1 and the horizontal direction is 8 °, so that a horizontal structure is formed. The included angle between the connecting line of the center of the oil inlet pipe joint 5 and the axis of the driving motor 1 and the horizontal direction is 27.5 degrees, and the included angle between the connecting line of the center of the oil outlet pipe joint 4 and the axis of the driving motor 1 and the vertical direction is 9 degrees.

As shown in FIG. 4, the electric drive power system with the horizontal architecture is used for the rear drive arrangement architecture, the Z-direction dimension is smaller, and more space can be released to the member cabin for users to use.

When the electric drive assembly adopts a four-wheel drive architecture layout, due to different requirements on the peripheral boundary of the front and rear drive, the electric drive assembly with two inclination angle architectures may be required, for example, a horizontal architecture can be arranged at the rear, and a front cabin is provided with an inclined architecture or a horizontal architecture.

The structures of the speed reducer, the controller and the interfaces of the speed reducer and the controller are not required to be changed when the structures of different angles are adjusted, so that the cost is saved, the controller is kept in a horizontal state, and the reliability is high.

Example 2

A variable-frame electric drive system, which is substantially the same in structure as embodiment 1, is different from that of embodiment 1 in that it further includes a level detecting means and an angle detecting means provided between a three-phase wire holder 21 and a three-phase wire tab 31, as shown in fig. 5.

The horizontal detection device comprises an annular tube 32 which is arranged on the three-phase connector lug 31 along the circumferential direction, a pressure block 321 is arranged in the annular tube 32 in a rolling mode, the pressure block 321 is spherical, pressure sensors 322 are symmetrically arranged at the bottom of the annular tube 32 along the direction perpendicular to the extension direction of the controller 3, the pressure sensors 322 extend along the inner wall of the annular tube 32, and the space area between the pressure sensors 322 is larger than the contact area between the pressure block 321 and the bottom surface of the annular tube 32.

As shown in fig. 5, the controller 3 is in a non-horizontal state, the pressure block 321 is always located at the lowest point due to gravity, at this time, the pressure block 321 is located on the pressure sensor 322 on the right side, the pressure sensor 322 sends a signal to the system to remind the controller 3 to adjust the inclination angle until the controller 3 is in a horizontal state, and the pressure block 321 is located between the two pressure sensors 322 and does not transmit a signal. The annular tube 32 is not limited to a circular shape and may be an elliptical shape, and the detection accuracy may be improved or reduced due to the difference in curvature. The included angle between the speed reducer and the controller is accurately controlled through the angle detection device during assembly.

Example 3

The structure of the electric drive system with the variable framework is substantially the same as that of the electric drive system in embodiment 2, as shown in fig. 6, the difference is that a movable groove 22 is formed in the inner wall of a three-phase wire holder 21, the movable groove 22 is connected with the three-phase wire holder 21 in a sliding mode in the circumferential direction, a balancing weight is arranged at the bottom of the movable groove 22, a first lower pole plate 23 and a second lower pole plate 24 are fixedly arranged in the movable groove 22, the first lower pole plate 23 and the second lower pole plate 24 are symmetrically arranged in the vertical direction, an upper pole plate 33 is arranged at the bottom of the outer wall of a three-phase wire connector 31, a connecting line from the center of the upper pole plate 33 to the center of the three-phase wire connector 31 is perpendicular to the width direction of a controller 3, and the first lower pole plate 23, the second lower pole plate 24 and the upper pole plate 33 are all connected with an MCU.

A cavity with air as a medium is formed between the three-phase wire holder and the three-phase wire connector, and the sealing ring is used for ensuring the sealing property of the cavity. The air medium, the upper polar plate and the first lower polar plate form a first capacitor, the upper polar plate, the air medium and the second lower polar plate form a second capacitor, the angle of the upper polar plate changes along with the controller, the first lower polar plate and the second lower polar plate are always kept in a symmetrical state along with the movable groove due to the action of the balancing weight on the movable groove, when the controller is in a horizontal state, as shown in figure 6, the upper polar plate does not deviate, the corresponding areas of the upper polar plate, the first lower polar plate and the second lower polar plate are 0, the sizes of the first capacitor and the second capacitor are 0, when the controller rotates, the angle of the upper polar plate deviates, if the controller rotates leftwards, the first capacitor formed by the upper polar plate and the first lower polar plate generates a capacitance value, and the size of the angle deviation is judged according to the size of the capacitance value of the first capacitor; if the first capacitor rotates towards the right side, a second capacitor formed by the upper pole plate and the second lower pole plate generates a capacitance value, the angle deviation is judged according to the capacitance value of the second capacitor, and whether the second capacitor tilts left or right is judged according to whether the first capacitor or the second capacitor generates the capacitance value. The device can be used for monitoring the horizontal state of the controller during assembly and driving.