A test device
By designing a test device that includes fixtures and sensors, the high cost and long cycle of welding parameter debugging in the manufacturing of motor stators for new energy vehicles were solved. The device enables simultaneous verification and precise monitoring of multiple test samples, thereby reducing costs and cycle time.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- CHINA FAW CO LTD
- Filing Date
- 2025-06-20
- Publication Date
- 2026-06-16
AI Technical Summary
In the manufacturing of stators for new energy vehicle motors, the existing technology involves high costs and long cycles for adjusting the process parameters of the copper wires at the welding end, and the parameters have large errors, making it difficult to meet actual production needs.
Design a test device comprising a base plate and a fixture, the fixture being equipped with temperature and pressure sensors for clamping copper wires and monitoring temperature and pressure during the welding process. Simultaneous verification of multiple test samples is achieved through a guiding mechanism and locking components, thereby improving versatility and accuracy.
It reduced the cost and manufacturing cycle of process development parts, reduced process parameter errors, and met the needs of actual production.
Smart Images
Figure CN224359570U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of new energy vehicle motor manufacturing technology, and in particular to a testing device. Background Technology
[0002] Currently, new energy vehicle motors are undergoing rapid product iteration and continuous industrial upgrading. New and iterative motor products require process development and performance verification. In particular, the stator assembly, a core performance component of the motor, requires continuous design optimization in aspects such as winding shape and wire gauge to achieve overall performance improvement and structural optimization. This structural innovation necessitates a versatile, low-cost, and short-cycle process development solution to address the innovative upgrading and replacement development model of motor products.
[0003] In the manufacturing of stators for new energy vehicle motors, it is necessary to adjust process parameters such as welding parameters, copper wire temperature, and clamping force for the copper wire at the welding end. Currently, the common practice is to develop these processes using semi-finished stator products or short copper wire samples. The former has high manufacturing costs and long production cycles, making it difficult to meet actual production needs; the latter results in significant deviations between the copper wire mating angle and the actual product, leading to large errors in the developed process parameters, necessitating the use of semi-finished products.
[0004] Therefore, there is an urgent need for an experimental device to solve the above-mentioned technical problems. Utility Model Content
[0005] The purpose of this invention is to provide a testing device that can improve the versatility of the testing device, reduce the cost of process development parts and manufacturing cycle, and meet actual production needs.
[0006] To achieve this objective, the present invention adopts the following technical solution:
[0007] A testing apparatus includes a base plate and a plurality of clamps. The base plate is provided with a plurality of mounting slots, each corresponding to one of the clamps. Each clamp is mountable in a mounting slot. Each clamp includes a fixed part, a movable part, an adjusting member, a temperature sensor, and a pressure sensor. One end of the adjusting member passes through the fixed part and is slidably connected to the movable part, and the adjusting member is capable of adjusting the distance between the fixed part and the movable part for clamping a test copper wire. The temperature sensor is disposed in the fixed part and is used to detect the temperature of the test copper wire. The pressure sensor is disposed in the fixed part and is used to detect the pressure exerted on the test copper wire.
[0008] As a preferred technical solution of the above-mentioned test device, the test device further includes several guiding mechanisms, which are arranged one-to-one with several of the clamps, and one end of each guiding mechanism passes through the fixed part and is slidably connected to the moving part.
[0009] As a preferred embodiment of the above-mentioned test device, the guiding mechanism includes a plurality of guiding components, which are spaced apart on the fixed part. Each guiding component includes a guide rod, a limiting block, and an elastic element. One end of the guide rod passes through the fixed part and is slidably connected to the moving part. The limiting block is fixed to the end of the guide rod. The moving part can abut against the limiting block. The elastic element is disposed between the fixed part and the moving part, and the elastic element is configured to always have a tendency to drive the moving part to move away from the fixed part.
[0010] As a preferred embodiment of the above-mentioned test device, the guide assembly further includes two fixing seats, one of which is disposed between the elastic member and the fixing part, and the other of which is disposed between the elastic member and the moving part.
[0011] As a preferred embodiment of the above-mentioned test device, the elastic element is sleeved on the outer periphery of the guide rod, the guide rod passes through the two fixed seats, and the two ends of the elastic element are respectively connected to the two fixed seats.
[0012] As a preferred technical solution of the above-mentioned test device, the test device further includes a plurality of locking components, which are respectively arranged in a corresponding manner with a plurality of mounting slots, and one end of the locking component can pass through the wall of the mounting slot and abut against the clamp.
[0013] As a preferred technical solution of the above-mentioned test device, the locking element is a bolt.
[0014] As a preferred embodiment of the above-mentioned test device, the adjusting component includes a screw and a nut. One end of the screw passes through the fixed part and the moving part in sequence and is threadedly connected to the nut. The other end of the screw abuts against the fixed part, and the moving part abuts against the nut.
[0015] As a preferred technical solution of the above-mentioned test device, the fixture further includes a plurality of positioning elements, which are spaced apart on the moving part. The fixed part is provided with a plurality of positioning grooves, which correspond one-to-one with the plurality of positioning elements, and the positioning elements can be inserted into the positioning grooves.
[0016] As a preferred embodiment of the aforementioned testing device, the clamp is triangular in shape.
[0017] The beneficial effects of this utility model are:
[0018] This invention provides a testing device. The testing device includes a base plate and several clamps. The base plate has several mounting slots, each corresponding to one of the clamps. The clamps can be installed in the mounting slots. Each clamp includes a fixed part, a movable part, an adjusting part, a temperature sensor, and a pressure sensor. One end of the adjusting part passes through the fixed part and is slidably connected to the movable part, and the adjusting part can adjust the distance between the fixed part and the movable part for clamping the test copper wire. The temperature sensor is located in the fixed part and is used to detect the temperature of the test copper wire. The pressure sensor is also located in the fixed part and is used to detect the pressure exerted on the test copper wire. Compared with existing technologies, this device, by using several clamps, can achieve simultaneous testing and verification of multiple sets of test samples, improving the versatility of the testing device. Furthermore, by integrating the temperature and pressure sensors, this device can achieve pressure and temperature monitoring during the welding process, reducing errors in process parameters, lowering the cost of process development parts and reducing manufacturing cycles, thus meeting actual production needs. Attached Figure Description
[0019] To more clearly illustrate the technical solutions in the embodiments of this utility model, the drawings used in the description of the embodiments of this utility model 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 the content of the embodiments of this utility model and these drawings without creative effort.
[0020] Figure 1 This is a schematic diagram of the structure of a test device provided in an embodiment of the present invention;
[0021] Figure 2 This is a schematic diagram of the structure of the base plate provided in an embodiment of this utility model;
[0022] Figure 3 This is a schematic diagram of the structure of the clamp provided in this embodiment of the utility model;
[0023] Figure 4 This is a schematic diagram of the structure of the guide component provided in an embodiment of the present utility model;
[0024] Figure 5 This is a schematic diagram of the structure of the adjusting member provided in an embodiment of this utility model.
[0025] In the picture:
[0026] 1. Base plate; 11. Mounting slot;
[0027] 2. Fixture; 21. Fixing part; 211. Positioning groove; 22. Adjusting component; 221. Screw; 222. Nut; 23. Temperature sensor; 24. Pressure sensor;
[0028] 3. Guide assembly; 31. Guide rod; 32. Limiting block; 33. Elastic element; 34. Fixing base;
[0029] 4. Locking component; 5. First test copper wire; 6. Second test copper wire. Detailed Implementation
[0030] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present invention and not intended to limit it. Furthermore, it should be noted that, for ease of description, the accompanying drawings show only the parts relevant to the present invention, not the entire structure.
[0031] In the description of this utility model, unless otherwise explicitly specified and limited, the terms "connected," "linked," and "fixed" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.
[0032] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.
[0033] In the description of this embodiment, the terms "upper," "lower," "left," and "right," etc., refer to the orientation or positional relationship shown in the accompanying drawings. They are used only for ease of description and simplification of operation, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. In addition, the terms "first" and "second" are only used for distinction in description and have no special meaning.
[0034] like Figures 1 to 5As shown, this utility model provides a testing device. The testing device includes a base plate 1 and several clamps 2. Specifically, the base plate 1 is provided with several mounting slots 11, and the mounting slots 11 are correspondingly arranged with several clamps 2. The clamps 2 can be installed in the mounting slots 11. The clamps 2 include a fixing part 21, a moving part, an adjusting part 22, a temperature sensor 23, and a pressure sensor 24. One end of the adjusting part 22 passes through the fixing part 21 and is slidably connected to the moving part. The adjusting part 22 can adjust the distance between the fixing part 21 and the moving part for clamping the test copper wire. The temperature sensor 23 is disposed in the fixing part 21 and is used to detect the temperature of the test copper wire. The pressure sensor 24 is disposed in the fixing part 21 and is used to detect the pressure on the test copper wire. Compared to existing technologies, this device, by setting up several fixtures 2, can achieve simultaneous testing and verification of multiple sets of test samples, improving the versatility of the testing device. By integrating temperature sensors 23 and pressure sensors 24, the device can monitor the pressure and temperature during the welding process, reducing errors in process parameters, lowering the cost of process development components and manufacturing cycle, and meeting actual production needs. In this embodiment, the testing device is equipped with five fixtures 2. Of course, in other embodiments, the number of fixtures 2 is determined according to the actual situation, which will not be elaborated here.
[0035] Optionally, the test apparatus also includes several guiding mechanisms, which are arranged one-to-one with several clamps 2. One end of the guiding mechanism passes through the fixed part 21 and is slidably connected to the moving part, so that the moving part can move along the length direction of the guiding mechanism, preventing the moving part from deviating and ensuring accurate clamping of the test copper wire.
[0036] Optionally, the guiding mechanism includes a plurality of guiding components 3, which are spaced apart on the fixed part 21. Each guiding component 3 includes a guide rod 31, a limiting block 32, and an elastic member 33. One end of the guide rod 31 passes through the fixed part 21 and is slidably connected to the moving part. The limiting block 32 is fixed to the end of the guide rod 31. The moving part can abut against the limiting block 32. The elastic member 33 is disposed between the fixed part 21 and the moving part, and the elastic member 33 is configured to always have a tendency to drive the moving part to move away from the fixed part 21. Specifically, in this embodiment, the guiding mechanism includes two guiding components 3, which are spaced apart. This allows the fixed part 21 to move along the length of the guide rod 31, further preventing the moving part from shifting and ensuring precise clamping of the test copper wire. When the operator locks the adjusting member 22, the fixed part 21 and the moving part move closer together, thus clamping the test copper wire. When the operator releases the adjusting member 22, the fixed part 21 and the moving part move away from each other under the action of the elastic member 33, thereby releasing the test copper wire. This allows for rapid insertion, replacement, and removal of the test copper wire. The limiting block 32 prevents the moving part from separating from the guide rod 31. Of course, in other embodiments, the number of guiding components 3 is determined according to the actual situation, and will not be elaborated here.
[0037] Optionally, the guide assembly 3 further includes two fixing seats 34, one of which is disposed between the elastic member 33 and the fixing part 21, and the other fixing seat 34 is disposed between the elastic member 33 and the moving part. Specifically, the fixing seats 34 can increase the contact area between the two ends of the elastic member 33 and the fixing part 21 and the moving part, respectively, so that the fixing part 21 and the moving part have a larger force-bearing surface, and the force direction of the fixing part 21 and the moving part is always along the length direction of the guide rod 31.
[0038] Furthermore, the elastic element 33 is a compression spring, which is sleeved on the outer periphery of the guide rod 31. The guide rod 31 passes through two fixed seats 34, and the two ends of the compression spring are respectively connected to the two fixed seats 34, which can improve the stability of the press fitting.
[0039] Optionally, the testing apparatus further includes several locking elements 4, each corresponding to a certain number of mounting slots 11. One end of each locking element 4 can pass through the wall of the mounting slot 11 and abut against the clamp 2. Specifically, the clamp 2 is assembled into the mounting slot 11 of the base plate 1, and the clamp 2 is fixed to the base plate 1 by rotating the locking element 4. Further, the locking element 4 is a bolt.
[0040] Optionally, the adjusting component 22 includes a screw 221 and a nut 222. One end of the screw 221 passes through the fixed part 21 and the moving part in sequence and is threadedly connected to the nut 222. The other end of the screw 221 abuts against the fixed part 21, and the moving part abuts against the nut 222. Specifically, by rotating the nut 222, the clamping force of the clamp 2 can be adjusted, and the pressure on the test copper wire can be precisely controlled by a digital torque wrench.
[0041] Optionally, the fixture 2 also includes a plurality of positioning elements, which are spaced apart on the moving part. The fixed part 21 is provided with a plurality of positioning grooves 211, which correspond one-to-one with the plurality of positioning elements. The positioning elements can be inserted into the positioning grooves 211 to prevent the moving part from shifting and to ensure accurate clamping of the test copper wire.
[0042] Optionally, the clamp 2 is triangular. Specifically, in this embodiment, both the fixing part 21 and the moving part are triangular, and the long sides of the fixing part 21 and the moving part are inserted into the mounting groove 11. The two short sides of the fixing part 21 and the moving part can clamp different types of test copper wires, which can improve the test efficiency.
[0043] The testing device provided by this utility model can quickly clamp the test copper wire, simultaneously verify multiple technical solutions, linearly adjust the clamping force, and collect temperature data. The specific implementation scheme and usage method are as follows:
[0044] S1. Place the first test copper wire 5 and the second test copper wire 6 on the two short sides of the clamp 2 respectively, and clamp the copper wires by rotating the nut 222.
[0045] S2. The clamp 2 is assembled into the mounting groove 11 of the base plate 1, and the clamp 2 is fixed to the base plate 1 by rotating the locking member 4.
[0046] S3. Repeat steps 1 and 2 of the method to complete the connection and fixation of the five clamps 2 to the base plate 1;
[0047] S4. Connect the test leads of temperature sensor 23 and pressure sensor 24 to the test equipment, and observe the test instrument to confirm that the sensor connection is normal and that it can work normally.
[0048] S5, rotate nut 222 to ensure that the clamping force is consistent with the test design scheme;
[0049] S6. Place the first test copper wire 5 and the second test copper wire 6 into the laser welding equipment for welding. After welding is completed, take them out and place them on the work platform.
[0050] S7. By rotating the nut 222, the moving part of the clamp 2 is separated from the fixed part 21 of the clamp 2 under the action of the elastic member 33, and the first test copper wire 5 and the second test copper wire 6 can be taken out.
[0051] S8, the seventh step of the reuse method, completes the removal of five sets of test samples.
[0052] Furthermore, 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 protection scope 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 which is determined by the scope of the appended claims.
Claims
1. A testing apparatus, characterized in that, The device includes a base plate (1) and several clamps (2). The base plate (1) is provided with several mounting slots (11). The mounting slots (11) are provided one-to-one with the clamps (2). The clamps (2) can be installed in the mounting slots (11). The clamps (2) include a fixing part (21), a moving part, an adjusting part (22), a temperature sensor (23), and a pressure sensor (24). One end of the adjusting part (22) passes through the fixing part (21) and is slidably connected to the moving part. The adjusting part (22) can adjust the distance between the fixing part (21) and the moving part for clamping the test copper wire. The temperature sensor (23) is provided in the fixing part (21) and is used to detect the temperature of the test copper wire. The pressure sensor (24) is provided in the fixing part (21) and is used to detect the pressure on the test copper wire.
2. The experimental apparatus according to claim 1, characterized in that, The test device also includes several guiding mechanisms, which are arranged one-to-one with several of the clamps (2). One end of each guiding mechanism passes through the fixed part (21) and is slidably connected to the moving part.
3. The experimental apparatus according to claim 2, characterized in that, The guiding mechanism includes a plurality of guiding components (3), which are spaced apart on the fixed part (21). Each guiding component (3) includes a guide rod (31), a limiting block (32), and an elastic element (33). One end of the guide rod (31) passes through the fixed part (21) and is slidably connected to the moving part. The limiting block (32) is fixed to the end of the guide rod (31). The moving part can abut against the limiting block (32). The elastic element (33) is disposed between the fixed part (21) and the moving part, and the elastic element (33) is configured to always have a tendency to drive the moving part to move away from the fixed part (21).
4. The testing apparatus according to claim 3, characterized in that, The guide assembly (3) further includes two fixing seats (34), one of which is disposed between the elastic member (33) and the fixing part (21), and the other of which is disposed between the elastic member (33) and the moving part.
5. The testing apparatus according to claim 4, characterized in that, The elastic element (33) is sleeved on the outer periphery of the guide rod (31), the guide rod (31) passes through the two fixed seats (34), and the two ends of the elastic element (33) are respectively connected to the two fixed seats (34).
6. The testing apparatus according to claim 1, characterized in that, The test device also includes several locking components (4), which are arranged one-to-one with several mounting slots (11). One end of each locking component (4) can pass through the wall of the mounting slot (11) and abut against the clamp (2).
7. The testing apparatus according to claim 6, characterized in that, The locking component (4) is a bolt.
8. A testing apparatus according to any one of claims 1-7, characterized in that, The adjusting member (22) includes a screw (221) and a nut (222). One end of the screw (221) passes through the fixed part (21) and the moving part in sequence and is threadedly connected to the nut (222). The other end of the screw (221) abuts against the fixed part (21), and the moving part abuts against the nut (222).
9. A testing apparatus according to any one of claims 1-7, characterized in that, The clamp (2) further includes a plurality of positioning elements, which are spaced apart on the moving part. The fixing part (21) is provided with a plurality of positioning grooves (211), which correspond one-to-one with the plurality of positioning elements. The positioning elements can be inserted into the positioning grooves (211).
10. A testing apparatus according to any one of claims 1-7, characterized in that, The clamp (2) is triangular.