Test system

Abstract

The utility model relates to a test system including a test box, a power supply, a load mechanism and a transmission shaft, an electric drive to be tested and a test liquid for placing the electric drive to be tested in a wading condition are arranged in the test box, and the output end of the electric drive to be tested is in transmission connection with the input end of the load mechanism through the transmission shaft. The power supply supplies power to the to-be-tested electric drive. The test system provided by the utility model realizes the verification of the reliability of the electric drive dynamic seal under the load wading working condition.

Description

Technical Field

[0001] This utility model relates to the field of testing technology, and in particular to a testing system. Background Technology

[0002] With the development of vehicle technology, some automakers are gradually launching vehicles with water-floating capabilities into the market. These water-wading conditions place higher demands on the static and dynamic sealing of the vehicle's electric drive system. Therefore, it is necessary to conduct static and dynamic sealing tests on the electric drive system under these water-wading conditions. While static sealing tests for electric drives are relatively mature, conventional dynamic sealing tests do not involve load and cannot simulate the water-wading conditions of the electric drive under load. Utility Model Content

[0003] To address the aforementioned technical problems, this invention provides a testing system that can simulate the wading conditions of an electric drive under load.

[0004] To achieve the above objectives, this utility model provides a testing system, including a test chamber, a power supply, a load mechanism, and a drive shaft. The test chamber contains a test drive and a test liquid in which the test drive is placed under water conditions. The output end of the test drive is connected to the input end of the load mechanism via the drive shaft. The power supply provides power to the test drive.

[0005] In one embodiment of the present invention, the test system includes a load module, which includes the load mechanism and the drive shaft, and the load module is respectively disposed at the two output terminals of the electric drive under test.

[0006] In one embodiment of this utility model, the transmission shaft includes a first transmission shaft, a second transmission shaft, and a third transmission shaft arranged sequentially. The second transmission shaft is rotatably mounted on the wall of the test chamber. The output end of the electric drive under test is connected to one end of the second transmission shaft via the first transmission shaft, and the input end of the load mechanism is connected to the other end of the second transmission shaft via the third transmission shaft.

[0007] In one embodiment of the present invention, a reinforcing member is provided on the wall of the test chamber, and the second transmission shaft is rotatably disposed on the wall of the test chamber and the reinforcing member.

[0008] In one embodiment of this utility model, the first drive shaft and the second drive shaft are connected by a coupling, and both the first drive shaft and the second drive shaft are detachably connected to the coupling.

[0009] In one embodiment of this utility model, the test box is provided with two mounting brackets, and the two ends of the electric drive under test are respectively mounted on the two mounting brackets, and the distance between the two mounting brackets is adjustable.

[0010] In one embodiment of the present invention, the testing system further includes a test base, a first test bracket, and a second test bracket. The first test bracket and the second test bracket are both disposed on the test base, the test box is disposed on the first test bracket, and the load mechanism is disposed on the second test bracket.

[0011] In one embodiment of the present invention, the testing system further includes a circulating water tank and a pump drive mechanism. The circulating water tank is connected to the test chamber, and the pump drive mechanism is disposed on the pipeline between the circulating water tank and the test chamber.

[0012] In one embodiment of the present invention, the testing system further includes a cooling mechanism, which is provided with a first liquid inlet and a first liquid outlet, and the electric drive under test is provided with a second liquid inlet and a second liquid outlet, wherein the first liquid inlet is connected to the second liquid outlet and the first liquid outlet is connected to the second liquid inlet.

[0013] In one embodiment of the present invention, the testing system further includes a controller and a mobile terminal, wherein the controller is connected to the electric drive under test, and the mobile terminal is connected to the controller.

[0014] The above-mentioned technical solution of this utility model has the following advantages compared with the prior art:

[0015] The electric drive under test described in this utility model is powered by a power supply, which puts the electric drive under test into a working state. The output end of the electric drive under test is connected to the input end of the load mechanism, so that the load mechanism provides a load condition for the electric drive under test. At the same time, the test liquid in the test chamber puts the electric drive under test into a water immersion condition, thereby realizing the dynamic sealing reliability verification of the electric drive under test under a load water immersion condition. Attached Figure Description

[0016] To more clearly illustrate the technical solutions in the embodiments of this utility model, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0017] Figure 1 This is a first structural schematic diagram of the testing system of this utility model;

[0018] Figure 2This is a second structural schematic diagram of the testing system of this utility model (hidden test box);

[0019] Figure 3 This is a cross-sectional view of the testing system of this utility model.

[0020] Explanation of reference numerals on the accompanying drawings:

[0021] 1. Test chamber; 2. Power supply; 3. Load mechanism; 4. Electric drive under test; 5. Drive shaft; 6. Load module; 7. First drive shaft; 8. Second drive shaft; 9. Third drive shaft; 10. Coupling; 11. Mounting bracket; 12. Test base; 13. First test bracket; 14. Second test bracket; 15. Controller; 16. Mobile terminal; 17. Liquid level and temperature sensor; 18. Speed ​​and torque sensor; 19. Insulation monitor; 20. First water inlet; 21. First water outlet; 22. Reinforcing member. Detailed Implementation

[0022] To make the objectives, technical solutions, and advantages of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0023] Reference Figures 1-3 As shown, the testing system of this utility model includes a test box 1, a power supply 2, a load mechanism 3, and a transmission shaft 5. The test box 1 contains a test drive 4 and a test liquid in which the test drive 4 is placed in a water-contaminated environment. The output end of the test drive 4 is connected to the input end of the load mechanism 3 through the transmission shaft 5. The power supply 2 supplies power to the test drive 4.

[0024] The test system described in this application implements dynamic sealing testing of the electric drive under test (4). Specifically, as shown... Figure 1 As shown, the testing system of this application includes a test chamber 1, a power supply 2, a load mechanism 3, and a drive shaft 5. The test chamber 1 is used to set the test fluid and the electric drive 4 under test, as shown... Figure 2As shown, the test fluid in the test chamber 1 has a preset height. The electric drive under test 4 is placed in a water-immersion condition by the test fluid with the preset height. The water-immersion condition includes a submerged state and a non-submerged state. In the submerged state, the electric drive under test 4 is completely submerged in the test fluid. The submersion height of the electric drive under test 4 in the test fluid can be adjusted by adjusting the preset height of the test fluid in the test chamber 1. In the non-submerged state, the electric drive under test 4 is partially submerged in the test fluid, that is, part of the electric drive under test 4 is exposed outside the test fluid. Therefore, by adjusting the height of the test fluid in the test chamber 1, the water-immersion condition is adjusted so as to verify the reliability of the electric drive seal under the water-immersion condition. Furthermore, power supply 2 is the power supply for the electric drive under test 4. After power supply 2 powers on the electric drive under test 4, the electric drive under test 4 is put into working state. The output end of the electric drive under test 4 is connected to the input end of the load mechanism 3 through the transmission shaft, so that the load mechanism 3 provides the load condition for the electric drive under test 4. At the same time, the test liquid in the test chamber 1 puts the electric drive under test 4 into a water immersion condition, realizing the dynamic sealing reliability verification of the electric drive under test 4 under the load water immersion condition.

[0025] The power supply 2 can be a storage battery. The DC power from the battery is converted into AC power by an inverter to power the electric drive under test 4, so that the electric drive under test 4 is put into working state, that is, the output end of the electric drive under test 4 is in a rotating state. In addition, the test system can also be equipped with measuring sensors such as a liquid level and temperature sensor 17 and a speed and torque sensor 18. The liquid level and temperature sensor 17 is used to measure the height and temperature of the test liquid in the test chamber 1, and the speed and torque sensor 18 is used to measure the real-time torque and speed of the output shaft of the electric drive under test 4, so as to control the test system to operate under different working conditions (such as different speeds, different loads, etc.) according to the above sensor parameters, and to monitor the electric drive under test 4 according to the sensor parameters. The liquid level and temperature sensor 17 is set on the inner wall of the test chamber 1, and the liquid level and temperature sensor 17 is below the test liquid level to collect the temperature of the test liquid. In addition, the test system also includes an insulation monitor 19. One end of the insulation monitor 19 receives the busbar of the electric drive under test 4, and the other end is grounded to measure the insulation resistance of the electric drive under test 4, thereby measuring the insulation performance of the electric drive under test.

[0026] In one embodiment, the test system includes a load module 6, which includes a load mechanism 3 and a drive shaft 5. The load module 6 is respectively disposed at the two output terminals of the electric drive 4 under test.

[0027] The load module 6 in this application is used to establish the load on the electric drive 4 under test. Specifically, as shown... Figure 1As shown, a load module 6 includes a load mechanism 3 and a drive shaft 5. Preferably, this application provides two load modules. The electric drive under test 4 includes two output terminals. One load module 6 is connected to one of the output terminals of the electric drive under test 4, and the other load module 6 is connected to the other output terminal of the electric drive under test 4 to simulate the actual operating conditions of the electric drive under test 4. The load mechanism 3 is connected to the controller 15 so that the load size of the load mechanism 3 can be controlled by the controller 15.

[0028] In one embodiment, the drive shaft 5 includes a first drive shaft 7, a second drive shaft 8, and a third drive shaft 9 arranged sequentially. The second drive shaft 8 is rotatably mounted on the wall of the test chamber 1. The output end of the electric drive under test 4 is connected to one end of the second drive shaft 8 via the first drive shaft 7, and the input end of the load mechanism 3 is connected to the other end of the second drive shaft 8 via the third drive shaft 9.

[0029] In this application, the electric drive 4 under test and the load mechanism 3 are connected by a transmission shaft 5. Specifically, as shown... Figure 2 and Figure 3 As shown, the drive shaft 5 includes a first drive shaft 7, a second drive shaft 8, and a third drive shaft 9 arranged sequentially. Further, the second drive shaft 8 is rotatably mounted on the wall of the test chamber 1 around its axis, and bearings and oil seals are provided between the second drive shaft 8 and the wall of the test chamber 1 to ensure the rotation of the second drive shaft 8 and the waterproof sealing performance between the second drive shaft 8 and the wall of the test chamber 1. Even further, the end of the second drive shaft 8 near the electric drive under test 4 is connected to the end of the first drive shaft 7 away from the electric drive under test 4; the end of the first drive shaft 7 near the electric drive under test 4 is connected to the output shaft of the electric drive under test 4; the end of the second drive shaft 8 away from the electric drive under test 4 is connected to the end of the third drive shaft 9 near the electric drive under test 4; and the end of the third drive shaft 9 away from the electric drive under test 4 is connected to the input end of the load mechanism 3. Preferably, the first drive shaft 7, the second drive shaft 8, and the third drive shaft 9 are arranged horizontally and coaxially. In addition, a speed and torque sensor 18 can be installed between the third drive shaft 9 and the input end of the load mechanism 3 to obtain speed and torque parameters; the second drive shaft 8 and the third rotating shaft 9 can be connected by a corresponding coupling.

[0030] In one embodiment, a reinforcing member 22 is provided on the wall of the test chamber 1, and a second drive shaft 8 is rotatably mounted on the wall of the test chamber 1 and the reinforcing member 22.

[0031] This application improves the rotational stability of the second drive shaft 8 on the wall of the test chamber 1 by using the reinforcing member 22. Specifically, as shown... Figure 3As shown, since the output end of the electric drive under test 4 is sequentially connected to the input end of the load mechanism 3 through the first drive shaft 7, the second drive shaft 8, and the third drive shaft 9, and the second drive shaft 8 is rotatably mounted on the wall of the test chamber 1 around its axis, there is a large torque on the second drive shaft 8 during the dynamic sealing reliability test of the electric drive under test 4. This results in a large force between the second drive shaft 8 and the wall of the test chamber 1 when the second drive shaft 8 rotates. In order to improve the rotational stability of the second drive shaft 8 on the wall of the test chamber 1, a reinforcing member 22 is provided at the position on the test chamber 1 where the second drive shaft 8 rotates. Therefore, the second drive shaft 5 is rotatably mounted on both the wall of the test chamber 1 and the reinforcing member 22. The strength of the wall of the test chamber 1 is improved by the reinforcing member 22, thereby improving the load-bearing capacity of the wall of the test chamber 1 on the second drive shaft 8, and thus improving the reliability of the entire test system.

[0032] In one embodiment, the first drive shaft 7 and the second drive shaft 8 are connected by a coupling 10, and both the first drive shaft 7 and the second drive shaft 8 are detachably connected to the coupling 10.

[0033] This application uses a coupling 10 to connect the first drive shaft 7 and the second drive shaft 8. Specifically, the test chamber 1 of this application can accommodate different models of electric drives under test (DUTs) 4. Different models of DUTs 4 are compatible with different models of couplings 10, and the lengths of the DUTs 4 and couplings 10 vary accordingly. Therefore, when the length of the DUT 4 in the test chamber 1 is long, a shorter coupling 10 is required; conversely, when the length of the DUT 4 in the test chamber 1 is short, a longer coupling 10 is required to ensure proper transmission connection between the output end of the DUT 4 and the first drive shaft 7. The detachable coupling 10 improves the versatility of the test system.

[0034] In one embodiment, the test box 1 is provided with two mounting brackets 11, and the two ends of the electric drive 4 under test are respectively mounted on the two mounting brackets 11, and the distance between the two mounting brackets 11 is adjustable.

[0035] This application uses a mounting bracket 11 installed inside the test chamber 1 to fix the electric drive 4 under test. Specifically, as shown... Figure 2As shown, two mounting brackets 11 are used to mount the electric drive under test (DUT) 4. Specifically, one end of the DUT 4 is mounted on one mounting bracket 11, and the other end is mounted on the other mounting bracket 11, thus securing the DUT 4. Furthermore, the distance between the two mounting brackets 11 is adjustable. For example, the two mounting brackets 11 can be a first mounting bracket and a second mounting bracket, and the first and / or second mounting brackets can be slidably disposed within the test chamber 1, allowing adjustment of the distance between the two mounting brackets 11 through relative sliding. The DUT 4 comes in different models with varying lengths. The adjustable mounting brackets 11 accommodate DUT 4 of different lengths, improving the versatility of the testing system.

[0036] In one embodiment, the testing system further includes a test base 12, a first test bracket 13 and a second test bracket 14, both of which are disposed on the test base 12, the test box 1 is disposed on the first test bracket 13, and the load mechanism 3 is disposed on the second test bracket 14.

[0037] This application uses a test bracket to position the test chamber 1 and the load mechanism 3. Specifically, as shown... Figure 1 and Figure 3 As shown, the testing system also includes a test base 12, through which the test box 1 and the load mechanism 3 are mounted. Further, the testing system also includes a first test bracket 13 and a second test bracket 14. The first test bracket 13 is used for mounting and positioning the test box 1, and is mounted on the test base 12. The test box 1 is mounted on the first test bracket 13, which is located above the test base 12. The second test bracket 14 is used for mounting and positioning the load mechanism 3, and is mounted on the test base 12. The load mechanism 3 is mounted on the second test bracket 14, which is located above the test base 12.

[0038] In one embodiment, the test system further includes a circulating water tank (not shown in the figure) and a pump drive mechanism (not shown in the figure), the circulating water tank being connected to the test chamber 1, and the pump drive mechanism being disposed on the pipeline between the circulating water tank and the test chamber 1.

[0039] This application utilizes a circulating water tank and a pump-driven mechanism to fill the test solution inside the test chamber 1. Specifically, the test system of this application includes a circulating water tank and a pump-driven mechanism. The circulating water tank is used to store the test solution, such as... Figure 3As shown, the test chamber 1 has a first inlet 20 at its top and a first outlet 21 at its bottom. A second outlet (not shown) of the circulating water tank is connected to the first inlet 20 of the test chamber 1 via a pipeline, and the second inlet (not shown) of the circulating water tank is connected to the first outlet 21 of the test chamber 1 via a pipeline. This facilitates communication between the circulating water tank and the test chamber 1, allowing the test liquid to be transported from the circulating water tank to the test chamber 1, or vice versa. The power to transport the test liquid from the circulating water tank to the test chamber 1 is provided by a pump drive mechanism, which can be located on the pipeline between the circulating water tank and the test chamber 1. Preferably, the pump drive mechanism is located at the second outlet of the circulating water tank.

[0040] In one embodiment, the test system further includes a cooling mechanism, which is provided with a first liquid inlet and a first liquid outlet. The electric drive under test 4 is provided with a second liquid inlet and a second liquid outlet. The first liquid inlet and the second liquid outlet are connected to each other.

[0041] This application uses a cooling mechanism (not shown in the figure) to cool the electric drive under test 4. Specifically, since the electric drive under test 4 is in operation, its output end is connected to the input end of the load mechanism 3 via a drive shaft 5. Therefore, the electric drive under test 4 generates heat. If the temperature is too high, it will damage the electric drive under test 4. Therefore, the testing system of this application also includes a cooling mechanism to cool the electric drive under test 4. Furthermore, the cooling mechanism uses liquid cooling to cool the electric drive under test 4. That is, the first liquid outlet of the cooling mechanism is connected to the second liquid inlet of the electric drive under test 4 to facilitate the delivery of coolant to the electric drive under test 4. After heat exchange within the electric drive under test 4, the coolant becomes hot liquid. The second liquid outlet of the electric drive under test 4 is connected to the first liquid inlet of the cooling mechanism to facilitate the delivery of hot liquid to the cooling mechanism. After heat exchange at the cooling mechanism, the hot liquid becomes coolant again. This cycle repeats to achieve the cooling of the electric drive under test 4. The cooling mechanism is connected to the controller 15 so that the controller 15 can control the cooling capacity of the cooling mechanism, such as the circulation speed of the coolant and the temperature of the coolant.

[0042] In one embodiment, the test system further includes a controller 15 and a mobile terminal 16, wherein the controller 15 is connected to the electric drive 4 under test, and the mobile terminal 16 is connected to the controller 15.

[0043] The testing system in this application is controlled via a mobile terminal 16. Specifically, as shown... Figure 3As shown, the testing system of this application also includes a controller 15 and a mobile terminal 16. The controller 15 is connected to the electric drive under test 4 to control its operating status. The mobile terminal 16 is connected to the controller 15 via wired or wireless communication, allowing the user to send control commands to the controller 15 to control the operating status of the electric drive under test 4. Furthermore, the controller 15 is also connected to measuring sensors such as a liquid level and temperature sensor 17, an insulation monitor 19, and a speed and torque sensor 18 to receive parameters such as liquid level, temperature, insulation resistance, speed, and torque collected by the sensors, and to send these parameters to the mobile terminal 16 for display.

[0044] Note that the above description is merely a preferred embodiment of the present invention and the technical principles employed. Those skilled in the art will understand that the present invention is not limited to the specific embodiments described herein, and various obvious changes, readjustments, and substitutions can be made without departing from the scope of protection of the present invention. Therefore, although the present invention has been described in detail through the above embodiments, the present invention is not limited to the above embodiments, and may include many other equivalent embodiments without departing from the concept of the present invention. The scope of the present invention is determined by the scope of the appended claims.

Claims

1. A testing system, characterized in that: The device includes a test chamber (1), a power supply (2), a load mechanism (3), and a drive shaft (5). The test chamber (1) contains a test drive (4) and a test liquid in which the test drive (4) is placed in a water-related working condition. The output end of the test drive (4) is connected to the input end of the load mechanism (3) through the drive shaft (5). The power supply (2) supplies power to the test drive (4).

2. The testing system according to claim 1, characterized in that: The test system also includes a load module (6), which includes the load mechanism (3) and the drive shaft (5). The load module (6) is respectively disposed at the two output ends of the electric drive (4) under test.

3. The testing system according to claim 1, characterized in that: The drive shaft (5) includes a first drive shaft (7), a second drive shaft (8) and a third drive shaft (9) arranged in sequence. The second drive shaft (8) is rotatably mounted on the wall of the test box (1). The output end of the electric drive under test (4) is connected to one end of the second drive shaft (8) through the first drive shaft (7). The input end of the load mechanism (3) is connected to the other end of the second drive shaft (8) through the third drive shaft (9).

4. The testing system according to claim 3, characterized in that: The test chamber (1) is provided with a reinforcing member (22) on its wall, and the second transmission shaft (8) is rotatably mounted on the test chamber (1) wall and the reinforcing member (22).

5. The testing system according to claim 3, characterized in that: The first drive shaft (7) and the second drive shaft (8) are connected by a coupling (10), and both the first drive shaft (7) and the second drive shaft (8) are detachably connected to the coupling (10).

6. The testing system according to claim 1, characterized in that: The test box (1) is provided with two mounting brackets (11), and the two ends of the electric drive under test (4) are respectively mounted on the two mounting brackets (11), and the distance between the two mounting brackets (11) is adjustable.

7. The testing system according to claim 1, characterized in that: The testing system also includes a test base (12), a first test bracket (13) and a second test bracket (14). The first test bracket (13) and the second test bracket (14) are both disposed on the test base (12), the test box (1) is disposed on the first test bracket (13), and the load mechanism (3) is disposed on the second test bracket (14).

8. The testing system according to claim 1, characterized in that: The testing system also includes a circulating water tank and a pump drive mechanism. The circulating water tank is connected to the test chamber (1), and the pump drive mechanism is located on the pipeline between the circulating water tank and the test chamber (1).

9. The testing system according to claim 1, characterized in that: The testing system also includes a cooling mechanism, which is provided with a first liquid inlet and a first liquid outlet. The electric drive under test (4) is provided with a second liquid inlet and a second liquid outlet. The first liquid inlet is connected to the second liquid outlet, and the first liquid outlet is connected to the second liquid inlet.

10. The testing system according to claim 1, characterized in that: The test system also includes a controller (15) and a mobile terminal (16). The controller (15) is connected to the electric drive (4) under test, and the mobile terminal (16) is connected to the controller (15).

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