Positioning mechanism for insulation and voltage resistance test

Abstract

The utility model relates to the technical field of positioning mechanisms, and discloses a positioning mechanism for an insulation and voltage resistance test, which comprises a test box, a positioning mechanism and a positioning mechanism, the two guide assemblies are symmetrically arranged on the two sides of the square channel opening; the number of the supporting shafts is two, and the two supporting shafts are symmetrically arranged on the side, facing the inner side wall of the test box, of the guiding assembly. The number of the mounting plates is four, the four mounting plates are divided into two groups, one group is mounted on the tops of the two supporting shafts, and the other group is arranged on the test box on the symmetrical sides of the supporting shafts; the jacking positioning assembly is arranged on the side, facing the guide assembly, of the mounting plate; and the two sets of sensors are mounted on the side, away from the jacking positioning assembly, of the mounting plate and are symmetrically arranged front and back.

Description

Technical Field

[0001] This utility model relates to the field of positioning mechanism technology, specifically to a positioning mechanism for insulation withstand voltage testing. Background Technology

[0002] Before being installed in a casing or assembled into a module, battery cells typically undergo insulation withstand voltage testing to ensure the insulation performance between the casing and the electrodes, thus preventing safety hazards such as short circuits and electric shocks. Existing testing methods mostly use manual clamping or semi-automatic platforms to position and contact the battery cells, which suffers from low operating efficiency, poor positioning accuracy, and unstable test results, making it difficult to meet the batch testing requirements of modern production lines.

[0003] To address this, some companies have introduced AGVs (Automated Guided Vehicles) in conjunction with automated testing devices for cell handling and alignment testing. However, numerous technical challenges remain in practical applications. For instance, when AGVs enter the testing area, path deviations or limit errors can easily lead to poor docking, affecting the accuracy of test contact. Furthermore, the lack of reliable clamping and lifting positioning mechanisms between the cell fixtures and test probes can also easily cause cell displacement or poor contact, impacting test results. In addition, to improve overall line efficiency, testing equipment often requires multi-station continuous testing capabilities, which places higher demands on the switching accuracy and repeatability stability of the testing fixtures.

[0004] In view of the above, this application proposes a positioning mechanism for insulation withstand voltage testing to solve the above problems. It can guide, clamp and lift the transport trolley for positioning, ensuring high-precision contact and stability of the battery cell during the test, thereby improving the automation level and reliability of insulation withstand voltage testing. Utility Model Content

[0005] To address the shortcomings of existing technologies, this utility model provides a positioning mechanism for insulation withstand voltage testing, which solves the problems mentioned in the background section.

[0006] To achieve the above objectives, this utility model provides the following technical solution:

[0007] Positioning mechanism for insulation withstand voltage testing, including:

[0008] The test chamber has a square channel opening at the bottom of its surface;

[0009] The guide components are provided in two sets, symmetrically arranged on both sides of the square channel opening;

[0010] There are two support shafts, which are set on one side of a set of guide components facing the inner wall of the test chamber and are arranged symmetrically.

[0011] There are four mounting plates, which are divided into two groups. One group is installed on the top of the two support shafts, and the other group is installed on the test box on the symmetrical side of the support shafts.

[0012] The lifting and positioning assembly is located on the side of the mounting plate facing the guide assembly;

[0013] The sensor is installed on the side of the mounting plate away from the lifting and positioning components, and it has two sets arranged symmetrically front and back.

[0014] Optionally, the test chamber is equipped with an insulation withstand voltage test component above the square channel opening.

[0015] Optionally, the guide assembly includes a positioning plate, a spacer block, and a guide unit;

[0016] The positioning plate is fixedly installed on the bottom wall inside the test chamber;

[0017] Multiple spacers are provided and are equidistantly distributed on the positioning plate;

[0018] The guide unit is located on the side of the spacer block away from the positioning plate.

[0019] Optionally, the guiding unit includes a guide plate and a guide pin;

[0020] The guide plate facing the opposite side is set from an inclined surface to a straight surface;

[0021] There are multiple guide pins, which are arranged along one edge of the guide plate.

[0022] Optionally, the lifting and positioning assembly includes a clamping cylinder, a three-axis cylinder, and a clamp;

[0023] Two clamping cylinders are provided, and the two sets of clamping cylinders are mounted opposite to each other on two mounting plates connected to the support shaft;

[0024] The three-axis cylinder is provided in four parts, which are mounted opposite to each other on four mounting plates;

[0025] The clamp is provided in two parts, which are mounted on two sets of clamping cylinders. The movement of the clamping cylinders causes the clamp to rotate 90°.

[0026] Optionally, two of the two clamping cylinders and four triaxial cylinders are mounted on the same mounting plate, and each of the two triaxial cylinders mounted on the same mounting plate is provided with a locating pin.

[0027] This utility model provides a positioning mechanism for insulation withstand voltage testing, which has the following advantages:

[0028] 1. This application achieves precise positioning and stable clamping of AGV transport vehicles by organically combining the guiding components, clamping structure, lifting and positioning components and sensor system, effectively improving the automation level and detection accuracy of insulation withstand voltage testing. Attached Figure Description

[0029] Figure 1 This is a schematic diagram of the structure of this utility model;

[0030] Figure 2 This is a schematic diagram of the clamping cylinder structure of this utility model;

[0031] Figure 3 This is a schematic diagram of the lifting and positioning component structure of this utility model;

[0032] Figure 4 This is a schematic diagram of the insulation withstand voltage test assembly of this utility model;

[0033] Figure 5 This is a schematic diagram of the guide component structure of this utility model.

[0034] In the diagram: 1. Test box; 2. Guide assembly; 21. Positioning plate; 22. Spacer block; 23. Guide unit; 231. Guide plate; 232. Guide pin; 3. Support shaft; 4. Mounting plate; 5. Lifting and positioning assembly; 51. Clamping cylinder; 52. Three-axis cylinder; 53. Fixture; 6. Sensor; 7. Positioning pin; 11. Square channel opening; 12. Insulation withstand voltage test assembly. Detailed Implementation

[0035] In order to make the technical means, creative features, objectives and effects of this utility model easier to understand, the present utility model will be further described below in conjunction with specific embodiments.

[0036] In the description of this utility model, it should be understood that the terms "lateral", "longitudinal", "end", "edge", "sidewall", "upper", "lower", "upper part", "lower part", "directly above", "surface", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "axial", "radial", "circumferential", "end", "head", "tail", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing the technical solution of this utility model and simplifying the description, 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.

[0037] This application proposes a positioning mechanism for insulation withstand voltage testing, the specific details of which are as follows:

[0038] For reference Figure 1-4This application mainly consists of a test box 1, a guide component 2, a support shaft 3, a mounting plate 4, a lifting and positioning component 5, and a sensor 6, which lifts the trolley to the target height and achieves high-precision vertical and horizontal positioning by cooperating with the positioning pin and bushing, while avoiding side slip or tilting.

[0039] For reference Figure 1-4 The test box 1 is the carrier of the mechanism. A square channel opening 11 is opened at the bottom of its surface to facilitate the passage of the AGV. After the AGV approaches the target and guides the AGV into the test box 1, the insulation withstand voltage test is performed through the insulation withstand voltage test component 12 located above the square channel opening 11 inside the test box 1.

[0040] It should be noted that the insulation withstand voltage test assembly 12 is an automated test system for testing the insulation withstand voltage of battery cells. The test area is divided into two parts, A and B. When the withstand voltage test is started, the test structure in the automated test system tests area A. After the test is completed, the motion mechanism (including cylinders and guide rails) in the automated test system assists the test instrument to move from area A to area B for another test. After one round of testing, the entire platform can return to the initial position or cyclically feed the material. The automated test system and its motion mechanism are common technical means in the existing field, and this application will not elaborate on the details further.

[0041] For reference Figure 1 and Figure 5 The guide component 2 is used to provide guidance assistance during movement. There are two sets, symmetrically arranged on both sides of the square channel opening 11. When the AGV approaches the transport vehicle, the guide component 2 guides it to fine-tune its lateral position. The main structure of the guide component 2 includes a positioning plate 21, spacers 22 and guide units 23. The positioning plate 21 is fixedly installed on the bottom wall of the test box 1. There are multiple spacers 22, which are equidistantly distributed on the positioning plate 21. The guide units 23 are located on the side of the spacers 22 away from the positioning plate 21. By setting the spacers 22, the force can be distributed, reducing the vibration caused by guiding the spacers 22 and achieving the effect of shock absorption.

[0042] Furthermore, the guide unit 23 includes a guide plate 231 and guide pins 232. The guide plate 231 is set to change from an inclined surface to a straight surface towards a group of guide components 2 on the opposite side. The straight surface is used for guidance, while the inclined surface is used for the convenience of the trolley when it is transported outward. There are multiple guide pins 232 arranged along one edge of the guide plate 231.

[0043] The straight surface of the guide plate 231 is used to make the AGV move in a straight line along the guide direction, so that the subsequent positioning pin 7 can be accurately inserted into the trolley bushing. The guide pin 232 reduces the friction between the AGV and the guide plate 231 during the guide movement, thereby achieving the effect of protecting the AGV.

[0044] To further support the installation height and support effect of the two sets of sensors 6, support shafts 3 and mounting plates 4 are provided. There are four support shafts 3, which are divided into two groups. The two groups of support shafts 3 are symmetrically arranged on the side of the guide assembly 2 facing the inner wall of the test chamber 1. There are also two support shafts 3, which are arranged symmetrically on the side of the guide assembly 2 facing the inner wall of the test chamber 1. There are four mounting plates 4, which are divided into two groups. One group is installed on top of the two support shafts 3, and the other group is installed on the test chamber 1 on the symmetrical side of the support shafts 3. The arrangement of two support shafts 3 is more conducive to subsequent structural installation.

[0045] For reference Figure 1-4 Sensor 6 is installed on the side of the mounting plate 4 away from the lifting and positioning component 5, and is connected to the two sets of mounting plates 4 connected to the support shaft 3. Sensor 6 is a pull rope displacement sensor, and there are two sets. The two sets of sensors 6 are set at the front and rear positions of the square channel opening 11, and the positions of the two sets of sensors 6 are set according to the corresponding detection points to detect the AGV's arrival.

[0046] For reference Figure 1-4 After the AGV approaches the target and guides the trolley into the test box 1, it achieves positioning and lifting through the lifting and positioning component 5. The lifting and positioning component 5 includes clamping cylinders 51, three-axis cylinders 52, and clamps 53. There are two clamping cylinders 51, which are mounted opposite each other on two mounting plates 4. There are four three-axis cylinders 52, which are mounted opposite each other on four mounting plates 4. There are two clamps 53, which are mounted on the two sets of clamping cylinders 51. The movement of the clamping cylinders 51 drives the clamps 53 to rotate 90°, thereby clamping the trolley.

[0047] Specifically, when the AGV travels to the docking position, the two sets of sensors 6 detect that the AGV is in place, the two cylinders are activated, and the clamp 53 is rotated 90° from the horizontal to the vertical direction. At the same time, the clamping arm of the clamp 53 is advanced to clamp the side of the transport vehicle, thereby achieving clamping and preliminary precise positioning of the transport vehicle and preventing the vehicle from moving, creating stable conditions for the lifting action.

[0048] For reference Figure 1-4 After positioning, the three-axis cylinder 52 is used for lifting. After the guiding and clamping work is completed, the four three-axis cylinders 52 start working simultaneously to lift the transport trolley from the bottom.

[0049] Furthermore, two of the two clamping cylinders 51 and four triaxial cylinders 52 are mounted on the same mounting plate 4. Each of the two triaxial cylinders 52 mounted on the same mounting plate 4 is provided with a positioning pin 7. The two triaxial cylinders 52 with positioning pins 7 are precisely inserted into the bushing holes on the trolley to achieve high-precision vertical and horizontal positioning, while avoiding side slippage or tilting.

[0050] It should be noted that AGV is a mature technology in this field, and this application will not elaborate on it further.

[0051] In this invention, the working steps of the device are as follows:

[0052] 1. First, the AGV approaches the target vehicle, and the guide component 2 guides the AGV to center itself;

[0053] 2. Next, sensor 6 detects that the device is in place and sends a signal to activate the two clamping cylinders 51. At this time, clamp 53 rotates and clamps the transport trolley.

[0054] 3. Then, the four three-axis cylinders 52 move to lift the transport trolley, and the synchronous positioning pins 7 are inserted into the bushings of the trolley to form a positioning.

[0055] 4. Finally, the lifting and high-precision locking are completed, and the insulation withstand voltage test component 12 works in coordination.

[0056] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments, and various changes and modifications can be made without departing from the spirit and scope of this utility model. All such changes and modifications fall within the scope of protection claimed by this utility model. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A positioning mechanism for insulation withstand voltage test, characterized by: include, The test box (1) has a square channel opening (11) on the bottom of its surface; The guide assembly (2) is provided in two sets, symmetrically arranged on both sides of the square channel opening (11); There are two support shafts (3), which are arranged symmetrically on one side of a set of guide components (2) facing the inner wall of the test chamber (1). Mounting plates (4) are provided in four groups. One group is installed on the top of the two support shafts (3), and the other group is installed on the test box (1) on the symmetrical side of the support shafts (3). The lifting and positioning assembly (5) is located on the side of the mounting plate (4) facing the guide assembly (2); The sensor (6) is installed on the side of the mounting plate (4) away from the lifting and positioning assembly (5), and it has two sets of symmetrically arranged front and back.

2. The positioning mechanism for insulation withstand voltage test according to claim 1, characterized in that: The test box (1) is equipped with an insulation withstand voltage test assembly (12) located above the square channel opening (11).

3. The positioning mechanism for insulation withstand voltage test according to claim 1, characterized in that: The guide assembly (2) includes a positioning plate (21), a spacer block (22), and a guide unit (23); The positioning plate (21) is fixedly installed on the bottom wall of the test chamber (1); Multiple spacer blocks (22) are provided and are equidistantly distributed on the positioning plate (21); The guide unit (23) is located on the side of the spacer block (22) away from the positioning plate (21).

4. The positioning mechanism for insulation voltage tests according to claim 3, characterized in that: The guiding unit (23) includes a guide plate (231) and a guide pin (232); The guide plate (231) is set from an inclined surface to a straight surface facing the opposite group of guide components (2); There are multiple guide pins (232), which are arranged along one edge of the guide plate (231).

5. The positioning mechanism for insulation withstand voltage test according to claim 1, characterized in that: The lifting and positioning assembly (5) includes a clamping cylinder (51), a three-axis cylinder (52), and a clamp (53); Two clamping cylinders (51) are provided, and the two sets of clamping cylinders (51) are mounted opposite each other on two mounting plates (4) connected to the support shaft (3); The three-axis cylinder (52) is provided in four parts, which are mounted opposite each other on four mounting plates (4); Two clamps (53) are provided, which are mounted on two sets of clamping cylinders (51). The movement of the clamping cylinders (51) drives the clamps (53) to rotate 90°.

6. The positioning mechanism for insulation voltage tests according to claim 5, characterized in that: Two of the two clamping cylinders (51) and four three-axis cylinders (52) are mounted on the same mounting plate (4), and each of the two three-axis cylinders (52) mounted on the same mounting plate (4) is provided with a positioning pin (7).

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