Flow and pressure characteristic testing device for electric drive controller cooling water circuit

Abstract

The utility model discloses a kind of flow and pressure characteristic testing devices of electric drive controller cooling water path, including the adjusting mechanism for adjusting the angle of electric drive controller, the water inlet pipeline connected with the water inlet end of electric drive controller, the backwater pipeline connected with the backwater end of electric drive controller and the water supply equipment connected with water inlet pipeline and backwater pipeline.The flow and pressure characteristic testing device of electric drive controller cooling water path of the utility model, by setting adjusting mechanism adjusts the angle of electric drive controller, realizes the flow and pressure characteristic test of water circulation of electric drive controller under different installation postures.

Description

Technical Field

[0001] This utility model belongs to the field of testing equipment technology. Specifically, this utility model relates to a device for testing the flow and pressure characteristics of the cooling water circuit of an electric drive controller. Background Technology

[0002] As a key control component in new energy vehicles, the electric drive controller's performance and reliability directly impact the overall efficiency and safety of the powertrain. During high-load, long-term operation, the electric drive controller generates significant heat, which must be dissipated promptly. Cooling water circuits, the mainstream heat dissipation solution for electric drive controllers, have flow and pressure characteristics that directly determine their cooling efficiency. However, in practical applications, electric drive controllers often face varying installation orientations (such as tilting or vibration during vehicle operation, or adjustments to the installation angle of industrial equipment under different operating conditions). These different orientations alter the flow field distribution within the cooling water circuit, affecting key parameters such as flow transfer efficiency, pressure loss, and inlet / outlet pressure difference, ultimately impacting the stability of the cooling effect. Therefore, during the electric drive controller development phase, accurately testing the flow and pressure characteristics of the cooling water circuit under different installation orientations is crucial for optimizing the cooling system design and ensuring reliable operation of the controller across all operating conditions.

[0003] However, existing electric drive controller cooling water circuit testing devices have many limitations: on the one hand, most testing devices can only perform flow or pressure tests under a single installation posture, and cannot simulate diverse posture scenarios in actual applications, resulting in deviations between test data and actual operating conditions, making it difficult to support comprehensive optimization of the heat dissipation system; on the other hand, traditional testing equipment often lacks real-time monitoring and dynamic adjustment functions, and cannot obtain dynamic change data of flow and pressure in real time, nor can it accurately control the flow parameters entering the controller, nor can it efficiently obtain pressure characteristics and inlet and outlet pressure difference information under different flow conditions, resulting in low testing efficiency and insufficient data integrity.

[0004] Chinese Patent Application No. 202210760157.9 discloses a test system for a motor controller, comprising: a bidirectional DC power supply for providing high-voltage DC input to the motor controller; a temperature-varying chamber in which the motor controller is placed, used to simulate the ambient temperature and humidity of the environment in which the motor controller operates; a temperature monitoring device including at least one thermocouple temperature sensor placed inside the motor controller, the temperature monitoring device acquiring the temperature signal value collected by the thermocouple temperature sensor; a liquid cooling system for providing coolant to the motor controller; and a drive motor, including a generator and a drive motor, the generator and drive motor being mechanically coupled to each other and electrically connected to the output terminal of the motor controller, used to simulate the actual operating load of the motor controller. The technical solution disclosed in this patent document also fails to solve the aforementioned technical problems.

[0005] A device is provided for testing the flow and pressure characteristics of the cooling water circuit of an electric drive controller, particularly for accurately testing the flow and pressure characteristics of the water circulation of the electric drive controller under different installation postures. Utility Model Content

[0006] This invention aims to solve at least one of the technical problems existing in the prior art. To this end, this invention provides a device for testing the flow and pressure characteristics of the cooling water circuit of an electric drive controller, with the purpose of testing the flow and pressure characteristics of the water circulation of the electric drive controller under different installation postures.

[0007] To achieve the above objectives, the technical solution adopted by this utility model is as follows: a test device for the flow and pressure characteristics of the cooling water circuit of an electric drive controller, including an adjustment mechanism for adjusting the angle of the electric drive controller, an inlet pipe connected to the inlet end of the electric drive controller, a return pipe connected to the return end of the electric drive controller, and a water supply device connected to the inlet pipe and the return pipe.

[0008] The adjustment mechanism includes a support base, a movable slider mounted on the support base, a connecting rod rotatably connected to the slider, a support platform rotatably connected to the connecting rod and used to mount an electric drive controller, and a drive assembly for controlling the slider to move linearly.

[0009] The drive assembly includes a screw, which is connected to the slider and is threadedly connected to the support base.

[0010] The drive assembly also includes an adjustment knob connected to the screw.

[0011] The water inlet pipeline is equipped with a first temperature sensor, a first pressure sensor, and a first flow sensor.

[0012] The return water pipeline is equipped with a second temperature sensor, a second pressure sensor, and a second flow sensor.

[0013] This utility model relates to a device for testing the flow and pressure characteristics of the cooling water circuit of an electric drive controller. By setting an adjustment mechanism to adjust the angle of the electric drive controller, the device can test the flow and pressure characteristics of the water circulation of the electric drive controller under different installation postures. Attached Figure Description

[0014] This manual includes the following figures, which illustrate the following: Figure 1 This is a schematic diagram of the structure of the test device for the flow and pressure characteristics of the cooling water circuit of the electric drive controller of this utility model; Figure 2 This is a schematic diagram of the regulating mechanism; The components in the diagram are labeled as follows: 1. Support base; 2. Screw; 3. Adjustment mechanism; 4. Electric drive controller; 5. First temperature sensor; 6. First pressure sensor; 7. First flow sensor; 8. Water supply equipment; 9. Return water pipe; 10. Second temperature sensor; 11. Second pressure sensor; 12. Second flow sensor; 13. Inlet water pipe; 14. Slider; 15. Connecting rod; 16. Support platform; 17. Adjustment knob. Detailed Implementation

[0015] The specific embodiments of this utility model will be further described in detail below with reference to the accompanying drawings, in order to help those skilled in the art to have a more complete, accurate and in-depth understanding of the concept and technical solution of this utility model, and to facilitate its implementation.

[0016] It should be noted that in the following embodiments, the terms "first" and "second" do not represent an absolute distinction in structure and / or function, nor do they represent the order of execution, but are merely for the convenience of description.

[0017] like Figure 1 and Figure 2 As shown, this utility model provides a test device for the flow and pressure characteristics of the cooling water circuit of an electric drive controller, including an adjustment mechanism 3 for adjusting the angle of the electric drive controller, an inlet pipe 13 connected to the inlet end of the electric drive controller, a return pipe 9 connected to the return end of the electric drive controller, and a water supply device 8 connected to the inlet pipe 13 and the return pipe 9.

[0018] Specifically, such as Figure 2 As shown, the adjustment mechanism 3 includes a support base 1, a slider 14 movably mounted on the support base 1, a connecting rod 15 rotatably connected to the slider 14, a support platform 16 rotatably connected to the connecting rod 15 and used to mount the electric drive controller, and a drive assembly for controlling the linear movement of the slider 14. The electric drive controller is fixedly mounted on the support platform 16, which is rotatably connected to the support base 1. Both ends of the connecting rod 15 are rotatably connected to the support platform 16 and the slider 14, respectively. The support base 1 has a groove for the slider 14 to engage, allowing the slider 14 to move linearly. The support base 1 guides the slider 14, and the drive assembly provides the driving force for the slider 14 to move. When the slider 14 moves, the connecting rod 15 drives the support platform 16 to rotate, which in turn drives the electric drive controller to rotate synchronously. This allows for adjustment of the electric drive controller's angle, meeting different attitude testing requirements.

[0019] like Figure 2As shown, the drive assembly includes a screw 2, which is connected to a slider 14. The screw 2 is threadedly connected to the support base 1, and the outer surface of the screw 2 has an external thread. The support base 1 has a threaded hole that mates with the screw 2. The slider 14 has a through hole through which the end of the screw 2 passes. The screw 2 is rotatable relative to the slider 14. When the screw 2 rotates, it can drive the slider 14 to move linearly along the axial direction, making operation convenient and simple.

[0020] like Figure 2 As shown, the drive assembly also includes an adjustment knob 17 connected to the screw 2. The adjustment knob 17 is located on the outside of the support base 1, and the adjustment knob 17 and the slider 14 are located at opposite ends of the screw 2. The operator rotates the adjustment knob 17 to drive the screw 2 to rotate around its axis.

[0021] like Figure 1 As shown, one end of the water inlet pipe 13 is connected to the water supply device 8, and the other end is connected to the water inlet of the electric drive controller. A first temperature sensor 5, a first pressure sensor 6, and a first flow sensor 7 are installed in the water inlet pipe 13. The water supply device 8 supplies coolant to the electric drive controller. The first temperature sensor 5 detects the water temperature in the water inlet pipe 13, the first pressure sensor 6 detects the water pressure in the water inlet pipe 13, and the first flow sensor 7 detects the water flow rate in the water inlet pipe 13. The first temperature sensor 5, the first pressure sensor 6, and the first flow sensor 7 are electrically connected to the control system, transmitting the collected pressure, flow rate, and other data to the control system.

[0022] like Figure 1 As shown, one end of the return water pipe 9 is connected to the water supply equipment 8, and the other end is connected to the return water port of the electric drive controller. A second temperature sensor 10, a second pressure sensor 11, and a second flow sensor 12 are installed in the return water pipe 9. The second temperature sensor 10 is used to detect the water temperature in the return water pipe 9, the second pressure sensor 11 is used to detect the water pressure in the return water pipe 9, and the second flow sensor 12 is used to detect the water flow rate in the return water pipe 9. The second temperature sensor 10, the second pressure sensor 11, and the second flow sensor 12 are electrically connected to the control system, transmitting the collected pressure, flow rate, and other data to the control system.

[0023] During the experiment, a certain amount of coolant was first added to the water supply device 8. When the water supply device 8 was turned on, the coolant began to flow into the first flow sensor 7, the first pressure sensor 6, and the first temperature sensor 5, which monitored the flow rate, pressure, and temperature of the coolant before it entered the electric drive controller. The coolant flowing out of the electric drive controller passed through the second flow sensor 12, the second pressure sensor 11, and the second temperature sensor 10, respectively. The flow rate, pressure, and temperature of the coolant after passing through the electric drive controller could be obtained. Finally, the coolant flowed back to the water supply device 8, forming a loop. During the experiment, the output flow rate could be controlled by adjusting the valve opening at the outlet of the water supply device 8. By collecting data such as the pressure and flow rate of the cooler in the loop, the pressure difference between the input and output ends of the electric drive controller could be calculated based on the collected data. During the experiment, the angle of the electric drive controller could be changed by rotating the adjustment knob. After collecting the corresponding data and performing calculations, the force and pressure characteristics of the electric drive controller under different postures could be obtained.

[0024] The present invention has been described above by way of example with reference to the accompanying drawings. Obviously, the specific implementation of the present invention is not limited to the above-described manner. Any non-substantial improvements made using the inventive concept and technical solution of the present invention; or the direct application of the inventive concept and technical solution to other situations without modification, are all within the protection scope of the present invention.

Claims

1. A device for testing the flow rate and pressure characteristics of the cooling water circuit of an electric drive controller, characterized in that: It includes an adjustment mechanism for adjusting the angle of the electric drive controller, an inlet pipe connected to the inlet end of the electric drive controller, a return pipe connected to the return end of the electric drive controller, and a water supply device connected to the inlet pipe and the return pipe.

2. The device for testing the flow and pressure characteristics of the cooling water circuit of the electric drive controller according to claim 1, characterized in that: The adjustment mechanism includes a support base, a movable slider mounted on the support base, a connecting rod rotatably connected to the slider, a support platform rotatably connected to the connecting rod and used to mount an electric drive controller, and a drive assembly for controlling the slider to move linearly.

3. The device for testing the flow and pressure characteristics of the cooling water circuit of the electric drive controller according to claim 2, characterized in that: The drive assembly includes a screw, which is connected to the slider and is threadedly connected to the support base.

4. The device for testing the flow and pressure characteristics of the cooling water circuit of the electric drive controller according to claim 3, characterized in that: The drive assembly also includes an adjustment knob connected to the screw.

5. The device for testing the flow and pressure characteristics of the cooling water circuit of the electric drive controller according to any one of claims 1 to 4, characterized in that: The water inlet pipeline is equipped with a first temperature sensor, a first pressure sensor, and a first flow sensor.

6. The device for testing the flow and pressure characteristics of the cooling water circuit of the electric drive controller according to any one of claims 1 to 4, characterized in that: The return water pipeline is equipped with a second temperature sensor, a second pressure sensor, and a second flow sensor.

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