CN212301780U - Testing device for wheel-side driving system - Google Patents
Testing device for wheel-side driving system Download PDFInfo
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- CN212301780U CN212301780U CN202020287004.3U CN202020287004U CN212301780U CN 212301780 U CN212301780 U CN 212301780U CN 202020287004 U CN202020287004 U CN 202020287004U CN 212301780 U CN212301780 U CN 212301780U
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Abstract
The utility model relates to a testing arrangement of wheel limit actuating system, it includes: the system comprises a differential, a first wheel side driving system, a second wheel side driving system, a variable frequency speed regulating asynchronous motor, a four-quadrant frequency converter, a feedable direct current power supply, a vehicle control unit and a motor controller, wherein the differential is provided with an input end, an output end A and an output end B, and the input end of the differential, the variable frequency speed regulating asynchronous motor and the four-quadrant frequency converter are sequentially connected; the output end A of the differential mechanism is connected with the first wheel-side driving system through a half shaft A, and the output end B of the differential mechanism is connected with the second wheel-side driving system through a half shaft B; the feedable direct current power supply, the vehicle control unit and the motor controller are sequentially connected, and the output end of the motor controller is respectively connected with the first wheel edge driving system and the second wheel edge driving system. The utility model discloses can simulate whole car use operating mode in the great degree of many sets of wheel limit actuating system of concurrent test, conveniently mark wheel limit actuating system more accurately.
Description
Technical Field
The utility model belongs to the technical field of electric automobile, in particular to wheel driving system's testing arrangement.
Background
The wheel driving system is an integrated structure that a motor is arranged on a wheel, and the output torque of the motor is transmitted to the wheel after being decelerated and torque-increased by a speed reducer. As a novel electric drive system, the wheel-side drive system can effectively reduce the quality of the whole vehicle and improve the smoothness of the vehicle, and is widely applied to the field of electric vehicles.
At present, various indexes are generally tested in a laboratory aiming at a single wheel-side driving system, and the indexes of the performance, the efficiency, the durability and the like of a motor and a reduction gearbox of the wheel-side driving system can be verified and optimized through the tests. However, the vehicle body motion structure is an overall motion structure of the vehicle body realized by means of a multi-wheel-side driving system, and the single-wheel-side driving system cannot represent the overall motion performance of the vehicle body after being successfully verified, so that how to directly and quickly test the multi-wheel-side driving system is an urgent problem to be solved in the current experiment.
SUMMERY OF THE UTILITY MODEL
The utility model discloses a solve above-mentioned technical problem and provide a wheel limit actuating system's testing arrangement, it can solve and is difficult to at present direct, carry out the technical problem that many sets of wheel limit actuating system tested fast.
The utility model provides an above-mentioned technical problem's technical scheme as follows: a testing apparatus for a wheel-side drive system, comprising: a differential mechanism, a first wheel edge driving system, a second wheel edge driving system, a variable frequency and adjustable speed asynchronous motor, a four-quadrant frequency converter, a feedable direct current power supply, a vehicle control unit and a motor controller,
the differential mechanism is provided with an input end, an output end A and an output end B, the input end of the differential mechanism is connected with the output end of the variable-frequency speed-regulating asynchronous motor, and the input end of the variable-frequency speed-regulating asynchronous motor is connected with the input end of the four-quadrant frequency converter; the output end A of the differential is connected with the first wheel-side driving system through a half shaft A, and the output end B of the differential is connected with the second wheel-side driving system through a half shaft B;
the feedable direct current power supply, the vehicle control unit and the motor controller are connected in sequence, and the output end of the motor controller is connected with the first wheel edge driving system and the second wheel edge driving system respectively.
The utility model has the advantages that:
(1) the utility model adopts the feedable DC power supply to provide controllable DC for the first wheel driving system and the second wheel driving system, and provides a power foundation for driving the first wheel driving system and the second wheel driving system;
(2) the torque magnitude and direction of the first wheel side driving system and the second wheel side driving system to be tested can be changed through the vehicle control unit and the motor controller, and tests on the aspects of performance, efficiency, reliability and the like can be realized;
(3) the four-quadrant frequency converter can run in four quadrants, electric energy can be directly fed back to a power grid, energy is saved by more than 85%, and the economical efficiency is good;
(4) the utility model can simultaneously test the first wheel driving system and the second wheel driving system to be tested, thereby simulating the use working condition of the whole vehicle to a greater extent and conveniently and accurately calibrating the wheel driving system;
(5) under the cooperation of the differential and the variable-frequency speed-regulating asynchronous motor, the electronic differential control of the wheel-side driving system to be measured can be simulated and verified, and the running safety of the whole vehicle is ensured.
It will be appreciated that the above-described dc feedable power supply is a bi-directional dc power supply which can provide dc power to the device and can convert dc power generated by the device into ac power for feeding back to the grid.
It will also be appreciated that the differential is a mechanism that enables the left and right (or front and rear) drive wheels of the vehicle to rotate at different speeds. Mainly comprises a left half shaft gear, a right half shaft gear, two planet gears and a gear carrier.
On the basis of the technical scheme, the utility model discloses can also do following improvement.
Furthermore, the testing device of the wheel driving system further comprises a dynamometer between the variable-frequency speed-regulating asynchronous motor and the four-quadrant frequency converter, a signal collector A arranged on the half shaft A and a signal collector B arranged on the half shaft B, the variable-frequency speed-regulating asynchronous motor, the dynamometer and the four-quadrant frequency converter are sequentially connected, and the signal collector A and the signal collector B are respectively connected with the dynamometer.
The beneficial effect of adopting the further scheme is that: the signal collector A can collect test parameters on the first wheel side driving system; the signal collector B can collect test parameters on the second wheel side driving system; the dynamometer can analyze the collected test parameters and control the four-quadrant frequency converter and the variable-frequency speed-regulating asynchronous motor.
Further, the signal collector A and the signal collector B are selected from at least one of a torque sensor, a rotating speed sensor, a voltage sensor, a current sensor and a temperature sensor.
The beneficial effect of adopting the further scheme is that: the signal collector A and the signal collector B are various in form, can collect abundant test parameters and are beneficial to analyzing and debugging the wheel driving system.
Further, the testing device of the wheel-side driving system further comprises a brake controller, a first brake piece arranged at the output end A of the differential mechanism and a second brake piece arranged at the output end B of the differential mechanism, the brake controller is connected with the whole vehicle controller through a control line, and the first brake piece and the second brake piece are respectively connected with the brake controller.
The beneficial effect of adopting the further scheme is that: through the brake controller, the first brake piece and the second brake piece, the wheel driving system is in a rotating state and has the maximum braking torque, the integral driving safety can be improved, and the smoothness of a vehicle is improved.
Further, a first locking piece is arranged on the output end A of the differential mechanism; and a second locking piece is also arranged on the output end B of the differential mechanism.
The beneficial effect of adopting the further scheme is that: the locking piece can lock differential mechanism output A or differential mechanism output B to make wheel limit actuating system's testing arrangement can test single wheel limit actuating system, also can test many sets of wheel limit actuating system, and the test form is nimble various.
Further, the first wheel driving system comprises a first driving motor and a first speed reducer, the first driving motor and the first speed reducer are sequentially connected with the half shaft A, and the first driving motor is further connected with the motor controller through a control line; the second wheel driving system comprises a second driving motor and a second speed reducer, the second driving motor and the second speed reducer are sequentially connected with the half shaft B, and the second driving motor is further connected with the motor controller through a control line.
Further, the testing device of the wheel driving system further comprises a testing platform, and the differential is fixedly arranged above the testing platform.
The beneficial effect of adopting the further scheme is that: the test platform is placed on a laboratory reference surface, so that the heights of the differential, the first wheel-side driving system and the second wheel-side driving system can be increased, and the components are convenient to install, observe, operate and maintain.
Furthermore, the testing device of the wheel-side driving system further comprises two bearing bases, wherein one bearing base is sleeved on the half shaft A, and the other bearing base is sleeved on the half shaft B.
The beneficial effect of adopting the further scheme is that: better transmission stability can be provided for semi-axis A and semi-axis B through the bearing base.
Drawings
Fig. 1 is a schematic top view of a testing device of a wheel-side driving system according to the present invention;
fig. 2 is a system diagram of a connection structure of the differential, the first wheel-side driving system and the second wheel-side driving system of the present invention;
fig. 3 is a schematic diagram of the control principle structure of the present invention.
In the drawings, the components represented by the respective reference numerals are listed below:
2. a differential mechanism; 4. a variable frequency speed regulation asynchronous motor; 6. a four-quadrant frequency converter; 8. a feedable DC power supply; 10. a first wheel-side drive system; 12. a first drive motor; 14. a first decelerator; 16. a second wheel-side drive system; 18. a second drive motor; 20. a second decelerator; 22. a half shaft A; 24. a half shaft B; 26. a vehicle control unit; 28. a motor controller; 30. a brake controller; 32. a dynamometer; 34. a signal collector A; 36. a signal collector B; 38. a first brake member; 40. a second brake member; 42. a first locking member; 44. a second lock; 46. test platform, 48, bearing base.
Detailed Description
The principles and features of the present invention are described below in conjunction with the following drawings, the examples given are only intended to illustrate the present invention and are not intended to limit the scope of the present invention.
In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, but do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus should not be construed as limiting the present invention. Furthermore, the terms "first", "second", etc. are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first," "second," etc. may explicitly or implicitly include one or more of that feature. In the description of the invention, unless otherwise specified, "a plurality" means two or more.
In the description of the present invention, it should be noted that unless otherwise explicitly stated or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the creation of the present invention can be understood by those of ordinary skill in the art through specific situations.
The present invention will be further described with reference to the accompanying drawings 1-3:
in a first mode
The present embodiment provides a testing apparatus for a wheel-side driving system, which includes, in combination with fig. 1 to 3: a differential 2, a first wheel-side driving system 10, a second wheel-side driving system 16, a variable frequency and adjustable speed asynchronous motor 4, a four-quadrant frequency converter 6, a feedable direct current power supply 8, a vehicle control unit 26 and a motor controller 28, wherein,
the differential 2 is provided with an input end, an output end A and an output end B, the input end of the differential 2 is connected with the output end of the variable-frequency adjustable-speed asynchronous motor 4, the input end of the variable-frequency adjustable-speed asynchronous motor 4 is connected with the input end of the four-quadrant frequency converter 6, the output end A of the differential 2 is connected with the first wheel-side driving system 10 through a half shaft A22, and the output end B of the differential 2 is connected with the second wheel-side driving system 16 through a half shaft B24;
the feedable dc power supply 8, the vehicle control unit 26 and the motor controller 28 are sequentially connected, and an output end of the motor controller 28 is respectively connected to the first wheel-side driving system 10 and the second wheel-side driving system 16.
The technical problem that the test of a multi-set wheel edge driving system is difficult to directly and quickly carry out at present can be solved by the mode.
The method can be used for testing the first wheel edge driving system 10 and the second wheel edge driving system 16 to be tested simultaneously, the using working condition of the whole vehicle is simulated to a greater extent, and the wheel edge driving system is conveniently and accurately calibrated, wherein a feedable direct current power supply 8 is adopted to provide controllable direct current for the first wheel edge driving system 10 and the second wheel edge driving system 16 and provide a power foundation for driving the first wheel edge driving system 10 and the second wheel edge driving system 16; the whole vehicle controller 26 and the motor controller 28 can change the torque and the direction of the first wheel-side driving system 10 and the second wheel-side driving system 16 to be tested, and tests on the aspects of performance, efficiency, reliability and the like can be realized; the four-quadrant frequency converter 6 can run in four quadrants, electric energy can be directly fed back to a power grid, energy is saved by more than 85%, and the economical efficiency is good. In addition, under the cooperation of the differential 2 and the variable-frequency speed-regulating asynchronous motor 4, the electronic differential control of the wheel-side driving system to be measured can be simulated and verified, and the running safety of the whole vehicle is ensured.
The first wheel-side driving system 10 includes a first driving motor 12 and a first speed reducer 14, the first driving motor 12 and the first speed reducer 14 are sequentially connected to the axle shaft a22, and the first driving motor 12 is further connected to the motor controller 28 through a control line; the second wheel-side driving system 16 includes a second driving motor 18 and a second speed reducer 20, the second driving motor 18 and the second speed reducer 20 are sequentially connected to the half shaft B24, and the second driving motor 18 is further connected to the motor controller 28 through a control line.
The testing device of the wheel driving system further comprises a testing platform, and the differential 2 is fixedly arranged above the testing platform.
In this way, the test platform is placed on a laboratory reference surface, which can increase the height of the differential 2, the first wheel-side drive system 10, and the second wheel-side drive system 16, facilitating installation, observation, operation, and maintenance of the components.
It should be noted that the variable frequency speed control asynchronous motor 4 may also be fixed on the test platform, the variable frequency speed control asynchronous motor 4 may respectively operate in a rotation speed mode or a torque mode, and the test is performed by cooling in a forced air cooling manner. Specifically, the variable-frequency speed-regulating asynchronous motor 4 is a variable-frequency speed-regulating motor which is specially used for dynamometer driving and is of a model YVPCG model, developed and manufactured by Chongqing Deloma variable-frequency motor.
It should be noted that the four-quadrant frequency converter 6 can implement the torque control and the rotational speed control of the first wheel-side drive system 10, and the four-quadrant frequency converter 6 can also implement the torque control and the rotational speed control of the second wheel-side drive system 16. At the same time, the motor controller 28 is capable of varying the torque and steering of the first wheel drive system 10, and the motor controller 28 is also capable of varying the torque and steering of the second wheel drive system 16. Specifically, the motor controller 28 of the present embodiment is a motor controller 28 of the type LCA600R12C, manufactured by the union of shanks power control technologies ltd; the vehicle control unit 26 adopts a Shenzhen Zhongde century New energy Limited company, ZDC-VCU024C01 and the vehicle control unit 26; the four-quadrant frequency converter adopts an ACS800 series four-quadrant frequency converter 6 of Hunan instrument Power testing instruments, Inc.
The working principle is as follows:
the utility model discloses a four-quadrant converter 6 and feedable DC power supply 8 all regard as the power supply, work in positive torque stage when being surveyed round of limit actuating system, are surveyed round of limit actuating system promptly and acquire the electric energy and export forward moment of torsion from feedable DC power supply 8, and four-quadrant converter 6 control variable frequency speed governing asynchronous machine 4 works in rotational speed mode, and at this moment, the electric wire netting is given in the 6 repayment electric energy of four-quadrant converter.
When the tested motor driving system works in a negative torque stage, the four-quadrant frequency converter 6 controls the variable-frequency speed-regulating asynchronous motor 4 to work in a torque mode, the motor controller 28 controls the tested wheel driving system to work in a rotating speed mode, and at the moment, the direct-current power supply 8 can feed back electric energy to the power grid.
Therefore, the energy consumed in the running process of the testing device is mainly the efficiency of electric energy conversion and the mechanical energy lost, the energy is saved by more than 80%, and the economy is good.
The testing device of the wheel-side driving system further comprises two bearing bases 48, wherein one of the bearing bases 48 is sleeved on the half shaft A22, and the other bearing base 48 is sleeved on the half shaft B24.
In this way, better drive stability can be provided for half-shaft A22 and half-shaft B24 by bearing mount 48.
It should be noted that the form of the testing device of the present wheel-side drive system is various, and we provide several alternatives below.
Mode two
The difference between this mode and the first mode is that, in conjunction with fig. 1 to 3, it includes: wheel driving system's testing arrangement still including being located variable frequency speed governing asynchronous machine 4 with dynamometer 32 between the four-quadrant converter 6, set up in signal collector A34 on semi-axis A22 with set up in signal collector B36 on semi-axis B24, variable frequency speed governing asynchronous machine 4 dynamometer 32 with the four-quadrant converter 6 connects gradually, signal collector A34 with signal collector B36 respectively with dynamometer 32 connects.
In this way, the signal collector a34 can collect the test parameters on the first wheel-side drive system 10; the signal collector B36 can collect test parameters on the second wheel-side driving system 16; the dynamometer 32 can analyze the collected test parameters and control the four-quadrant frequency converter 6 and the variable-frequency variable-speed asynchronous motor 4.
Wherein the signal collector A34 and the signal collector B36 are selected from at least one of a torque sensor, a rotating speed sensor, a voltage sensor, a current sensor and a temperature sensor. Specifically, in the present embodiment, the signal collector a34 and the signal collector B36 are both a torque sensor and a rotational speed sensor.
Therefore, the signal collector A34 and the signal collector B36 have various forms, can collect abundant test parameters, and are beneficial to analyzing and debugging the wheel-side driving system.
Mode III
The difference between the present mode and the first mode is that, with reference to fig. 1 to 3, the testing apparatus of the wheel-side driving system further includes a brake controller 30, a first brake piece 38 disposed at the output end a of the differential 2, and a second brake piece 40 disposed at the output end B of the differential 2, the brake controller 30 is connected to the vehicle control unit 26 through a control line, and the first brake piece 38 and the second brake piece 40 are respectively connected to the brake controller 30.
Thus, the brake controller 30, the first brake piece 38 and the second brake piece 40 enable the wheel-side driving system to be in a rotating state and have the maximum braking torque, so that the overall active safety can be improved, and the smoothness of the vehicle can be improved.
Mode IV
The difference between this mode and the first mode is that, in conjunction with fig. 1 to 3, a first locking member 42 is further provided at the output end a of the differential 2; a second locking member 44 is also arranged at the output B of the differential 2.
Like this, the locking piece can pin 2 output A of differential mechanism or 2 output B of differential mechanism to make wheel driving system's testing arrangement can test single wheel driving system, also can test many sets of wheel driving system, the test form is nimble various.
The above description is only for the preferred embodiment of the present invention, and is not intended to limit the present invention, and any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention should be included within the protection scope of the present invention.
Claims (8)
1. A testing arrangement of wheel-side drive system, its characterized in that, it includes: a differential (2), a first wheel side driving system (10), a second wheel side driving system (16), a variable frequency speed regulation asynchronous motor (4), a four-quadrant frequency converter (6), a feedable direct current power supply (8), a vehicle control unit (26) and a motor controller (28), wherein,
the differential (2) is provided with an input end, an output end A and an output end B, the input end of the differential (2) is connected with the output end of the variable-frequency speed-regulating asynchronous motor (4), and the input end of the variable-frequency speed-regulating asynchronous motor (4) is connected with the input end of the four-quadrant frequency converter (6); the output end A of the differential (2) is connected with the first wheel-side driving system (10) through a half shaft A (22), and the output end B of the differential (2) is connected with the second wheel-side driving system (16) through a half shaft B (24);
the feedable direct current power supply (8) and the vehicle control unit (26) are sequentially connected with the motor controller (28), and the output end of the motor controller (28) is respectively connected with the first wheel-side driving system (10) and the second wheel-side driving system (16).
2. The testing device of the wheel-side driving system according to claim 1, wherein the testing device of the wheel-side driving system further comprises a dynamometer (32) located between the variable-frequency variable-speed asynchronous motor (4) and the four-quadrant frequency converter (6), a signal collector A (34) arranged on the half shaft A (22), and a signal collector B (36) arranged on the half shaft B (24), the variable-frequency variable-speed asynchronous motor (4), the dynamometer (32) and the four-quadrant frequency converter (6) are sequentially connected, and the signal collector A (34) and the signal collector B (36) are respectively connected with the dynamometer (32).
3. The testing device of a wheel-side driving system according to claim 2, characterized in that the signal collector a (34) and the signal collector B (36) are each selected from at least one of a torque sensor, a rotational speed sensor, a voltage sensor, a current sensor, and a temperature sensor.
4. A testing device of a wheel side driving system according to any one of claims 1 to 3, characterized in that the testing device of the wheel side driving system further comprises a brake controller (30), a first brake member (38) arranged at the output a of the differential (2) and a second brake member (40) arranged at the output B of the differential (2), the brake controller (30) is connected with the whole vehicle controller (26) through a control line, and the first brake member (38) and the second brake member (40) are respectively connected with the brake controller (30).
5. A testing device of a wheel-side drive system according to any one of claims 1 to 3, characterized in that a first locking member (42) is further provided on the output a of the differential (2); a second locking piece (44) is also arranged on the output end B of the differential (2).
6. A testing device of a wheel-side driving system according to any one of claims 1 to 3, characterized in that the first wheel-side driving system (10) comprises a first driving motor (12) and a first speed reducer (14), the first driving motor (12) and the first speed reducer (14) are connected with the half shaft a (22) in sequence, and the first driving motor (12) is further connected with the motor controller (28) through a control line; the second wheel driving system (16) comprises a second driving motor (18) and a second speed reducer (20), the second driving motor (18) and the second speed reducer (20) are sequentially connected with the half shaft B (24), and the second driving motor (18) is further connected with the motor controller (28) through a control line.
7. A testing device of a wheel-rim drive system according to any one of claims 1 to 3, characterized in that the testing device of the wheel-rim drive system further comprises a testing platform (46), and the differential (2) is fixedly arranged above the testing platform (46).
8. A wheel-rim drive system testing device according to any one of claims 1 to 3, characterized in that it further comprises two bearing seats (48), one of said bearing seats (48) being fitted over the half-shaft a (22) and the other bearing seat (48) being fitted over the half-shaft B (24).
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| CN202020287004.3U CN212301780U (en) | 2020-03-10 | 2020-03-10 | Testing device for wheel-side driving system |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN114705932A (en) * | 2022-03-24 | 2022-07-05 | 苏州信科检测技术有限公司 | EMC on-load testing device |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN114705932A (en) * | 2022-03-24 | 2022-07-05 | 苏州信科检测技术有限公司 | EMC on-load testing device |
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