Energy storage battery box pressure resistance test system

Abstract

The application is suitable for the technical field of pressure resistance test of energy storage battery box, and provides a pressure resistance test system for energy storage battery box, which comprises a conveying unit, a detection unit, a transfer unit, a qualified part discharging unit and a problem part discharging unit. The conveying unit comprises a first conveying mechanism; the first conveying mechanism comprises a limiting structure, and the limiting structure is used for limiting the energy storage battery box in the conveying process. The detection unit comprises a lifting adjusting mechanism, a positioning structure and a detection plate. The upper surface of the energy storage battery box is provided with a test point area and a suction point area, a plurality of detection points are arranged in the test point area, and a transfer grabbing part for the transfer unit is arranged in the suction point area; by arranging the test point and the transfer grabbing part on the top surface of the box, the transfer suction point and the test point are separated, and by adopting the limiting structure of the U-shaped limiting frame matched with the inclined support frame, the box in the conveying process is limited from the side and the bottom edge support.

Description

Technical Field

[0001] This invention relates to the field of energy storage battery box withstand voltage testing technology, and more specifically, to an energy storage battery box withstand voltage testing system. Background Technology

[0002] With the rapid development of the new energy storage industry, the application scale of energy storage battery modules continues to expand. As the core structural component that supports and protects the battery module, the insulation withstand voltage performance of the energy storage battery box directly determines the power safety and operational reliability of the energy storage system. Therefore, withstand voltage testing is an essential quality inspection process before the energy storage battery box leaves the factory.

[0003] Currently, there are two main modes for withstand voltage testing of energy storage battery boxes: manual testing and automated testing. In the manual testing mode, operators manually connect the test probe to the test point on the box, complete the withstand voltage test, and then manually sort the qualified and unqualified products. This not only has low testing efficiency and high labor intensity, but the consistency of the test is also greatly affected by the operator's skill level, which can easily lead to problems such as poor contact and test data deviation. At the same time, there are certain electrical safety hazards.

[0004] In addition, in the automated testing mode, the adsorption area on the top surface of the energy storage battery box is not distinguished from the test point, which makes it easy for the gripping mechanism to make incorrect gripping. Furthermore, in the existing automated conveying, the box is only transported by a conveyor belt without limiting the position of the box. The box is prone to deviation during the transport process, which makes it difficult for the gripping mechanism to grip it. Therefore, an energy storage battery box withstand voltage test system is proposed to improve the existing problems. Summary of the Invention

[0005] In view of the shortcomings of the existing technology, the purpose of this invention is to provide a pressure withstand testing system for energy storage battery boxes.

[0006] To achieve the above objectives, the present invention provides the following technical solution: The energy storage battery enclosure withstand voltage testing system includes a conveying unit, a testing unit, a transfer unit, a qualified parts unloading unit, and a defective parts unloading unit.

[0007] The conveying unit includes a first conveying mechanism; the first conveying mechanism includes a limiting structure, which is used to limit the energy storage battery box during conveying.

[0008] The detection unit includes a lifting and adjusting mechanism, a positioning structure, and a detection plate.

[0009] The lifting and adjusting mechanism is used to drive the positioning structure and the energy storage battery box placed on the positioning structure to adjust their position in the vertical direction.

[0010] The upper surface of the energy storage battery box is provided with a test point area and an absorption point area. The test point area is provided with several detection points, and the absorption point area is provided with a transfer gripping part for the transfer unit to absorb.

[0011] The positioning structure includes two sets of positioning seats one and two sets of positioning seats two. The two sets of positioning seats one are supported on the side where the sampling point area is located, and the two sets of positioning seats two are supported on the side where the test point area is located. Furthermore, the size of the positioning seat one is larger than the size of the positioning seat two.

[0012] The present invention is further configured such that: detection point one, detection point two, and detection point three are set in the test point area.

[0013] The bottom of the detection plate is provided with adapter point one, adapter point two, and adapter point three in sequence, and adapter point one, adapter point two, and adapter point three are respectively set to correspond to detection point one, detection point two, and detection point three.

[0014] The invention is further configured such that the positioning structure includes two sets of positioning seats three, wherein the two sets of positioning seats one, two sets of positioning seats two, and two sets of positioning seats three are all fixed to the top surface of the connecting seat and arranged around the outer periphery of the energy storage battery box. The two sets of positioning seats three are correspondingly supported at both ends of the energy storage battery box. The dimensions of the two sets of positioning seats one are larger than the dimensions of the two sets of positioning seats three.

[0015] The present invention is further configured such that: the lifting adjustment mechanism includes a mounting base, the mounting base is fixed on the base support, a lifting adjustment component is fixed on the mounting base, the output end of the lifting adjustment component is connected to a connecting seat, and a plurality of guide structures are provided between the connecting seat and the base support.

[0016] The present invention is further configured such that: the detection unit further includes a base support, a detection bracket is provided on the top of the base support, the detection bracket has an L-shaped structure, the detection bracket includes a horizontal section and a vertical section, the vertical section is fixedly connected to the base support, the detection plate is disposed below the horizontal section, and a plurality of buffer members are provided between the detection plate and the horizontal section.

[0017] The present invention is further configured such that: the qualified part unloading unit and the defective part unloading unit respectively include a second conveying mechanism and a third conveying mechanism, and the first conveying mechanism, the second conveying mechanism and the third conveying mechanism have the same structure.

[0018] The present invention is further configured such that: the first conveying mechanism includes a support frame, an electric conveyor belt is disposed on the support frame, and the limiting structure is disposed on the outside of the electric conveyor belt.

[0019] The present invention is further configured such that: the limiting structure includes a first limiting frame and a second limiting frame symmetrically arranged, with a crossbeam connecting the first and second limiting frames; the first limiting frame, the second limiting frame, and the crossbeam together form a U-shaped limiting frame with its opening facing outwards; the U-shaped limiting frame is located on the outside of the electric conveyor belt, and is used to limit the side of the energy storage battery box. A position detection sensor is provided on the side of the crossbeam facing the energy storage battery box, and the position detection sensor is used to detect the position of the energy storage battery box.

[0020] The present invention is further configured such that: multiple sets of fixing frames are equidistantly arranged on the outer side of the limiting frame, one end of each set of fixing frames is fixedly connected to the limiting frame, and the other end of each set of fixing frames is fixedly connected to the support frame.

[0021] Multiple sets of fixing frames 2 are equidistantly arranged on the outer side of the limiting frame 2. One end of each set of fixing frames 2 is fixedly connected to the limiting frame 2, and the other end of each set of fixing frames 2 is fixedly connected to the support frame.

[0022] The present invention is further configured such that: the limiting structure also includes a support frame one and a support frame two, both of which are fixed on multiple sets of fixed frames two, and the tops of the support frame one and the support frame two are used to contact the bottom of the energy storage battery box to support the bottom of the energy storage battery box.

[0023] In summary, this application includes at least one of the following beneficial technical effects: (1) The main conveying channel is connected in series with the conveying unit, the testing unit and the qualified part unloading unit. The problem part unloading unit is set up in parallel on the side of the qualified part unloading unit. A single transfer unit can cover four workstations at the same time: the loading end station, the testing station and the double unloading station. This simplifies the control logic of multi-device collaboration and effectively reduces the difficulty of later operation and maintenance.

[0024] (2) By setting test points and transfer gripping parts in sections on the top surface of the energy storage battery box, the gripping reference and the test reference form a unified positional relationship on the structure of the box itself. The transfer adsorption point and the test point are separated from the structural level. After the transfer unit grips the box, it can be placed and positioned directly according to the preset coordinates, which facilitates the normal operation of the gripping work.

[0025] (3) By adopting a U-shaped limiting frame and a tilted support frame, the box is limited throughout the transportation process from two dimensions: lateral constraint and bottom edge support, reducing the possibility of the box going off track during transportation; with the position detection sensor for position detection and linkage control, the start and stop of the transportation station can be realized, improving the position repeatability accuracy of the box and providing a position basis for subsequent transfer, grabbing and testing alignment.

[0026] (4) The inner sides of positioning seat 1, positioning seat 2 and positioning seat 3 are all provided with guide chamfers. The guide chamfers are inclined from top to bottom toward the outside of the energy storage battery box, so that the entrance of the positioning area is horn-shaped, which facilitates the energy storage battery box to fall smoothly into the positioning area when the transfer unit places the box, and reduces the positioning accuracy requirements. The positioning seat 1 corresponding to the box absorption area adopts a larger size design, which can provide a larger support area and limiting strength, reduce the impact load generated when the transfer unit places the energy storage battery box, and improve the placement stability of the energy storage battery box. Attached Figure Description

[0027] Figure 1 This is a schematic diagram of the energy storage battery box withstand voltage test system of the present invention.

[0028] Figure 2 for Figure 1 Top view.

[0029] Figure 3 for Figure 2 A partial structural diagram.

[0030] Figure 4 This is a schematic diagram of the structure of the energy storage battery box in this invention.

[0031] Figure 5 This is a schematic diagram of the detection unit in this invention.

[0032] Figure 6 This is a schematic diagram of the detection plate in this invention.

[0033] Figure 7 This is a schematic diagram of the positioning structure in this invention.

[0034] Figure 8 This is a schematic diagram of the structure of the first conveying mechanism in this invention.

[0035] Figure 9 This is a schematic diagram of the limiting structure in this invention.

[0036] Figure 10 for Figure 9 The front view.

[0037] Explanation of reference numerals in the attached drawings: 1. Conveying unit; 11. First conveying mechanism; 111. Support frame; 112. Electric conveyor belt; 113. Limiting structure; 1131. Limiting frame one; 1132. Limiting frame two; 1133. Horizontal frame; 1134. Fixing frame one; 1135. Fixing frame two; 1136. Support frame one; 1137. Support frame two; 1138. Position detection sensor; 2. Detection unit; 21. Base bracket; 22. Lifting and adjusting mechanism; 221. Mounting seat; 222. Lifting and adjusting component; 223. Connecting seat; 224. Guide structure; 23. Positioning structure; 231. Positioning seat one; 232. Positioning seat two; 233. Positioning seat three; 24. Detection bracket; 25. Detection plate; 251. Adaptor point one; 252. Adaptor point two; 253. Adaptor point three; 26. Buffer component; 3. Transfer unit; 4. Qualified parts unloading unit; 41. Second conveying mechanism; 5. Problem part unloading unit; 51. Third conveying mechanism; 6. Energy storage battery box; 61. Inspection point one; 62. Inspection point two; 63. Inspection point three; 64. Transfer and gripping unit. Detailed Implementation

[0038] It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other. The present invention will now be described in detail with reference to the accompanying drawings and embodiments.

[0039] It should be noted that, unless otherwise specified, all technical and scientific terms used in this application have the same meaning as commonly understood by one of ordinary skill in the art to which this application pertains.

[0040] Please see Figures 1-10 The present invention provides the following technical solutions: Example 1, see Figure 1 The energy storage battery casing withstand voltage testing system includes a conveying unit 1, a testing unit 2, a transfer unit 3, a qualified parts unloading unit 4, and a defective parts unloading unit 5. Along the material conveying direction, the testing unit 2 and the qualified parts unloading unit 4 are sequentially located downstream of the conveying unit 1. The testing unit 2 is used to perform withstand voltage performance testing on the energy storage battery casing 6. The transfer unit 3 is located to the side of the testing unit 2, and the defective parts unloading unit 5 is located to the side of the qualified parts unloading unit 4. The working range of the transfer unit 3 covers the end station of the conveying unit 1, the testing station of the testing unit 2, the loading end station of the qualified parts unloading unit 4, and the loading end station of the defective parts unloading unit 5, and is used to transfer the energy storage battery casing 6 between these stations.

[0041] By setting up the above-mentioned device, the withstand voltage test of the energy storage battery box 6 and the sorting of qualified and unqualified products can be realized, thereby improving the testing efficiency and accuracy and reducing the positioning error and efficiency caused by manual operation.

[0042] See Figure 2The conveying unit 1 includes a first conveying mechanism 11, the qualified parts unloading unit 4 includes a second conveying mechanism 41, and the defective parts unloading unit 5 includes a third conveying mechanism 51. The first conveying mechanism 11, the second conveying mechanism 41 and the third conveying mechanism 51 have the same structure. The consistent structure makes the conveying rhythm of each station consistent, while reducing the processing and manufacturing costs and subsequent maintenance costs of the equipment.

[0043] The specific structure of the conveying mechanism is as follows: The first conveying mechanism 11 is used as an example for detailed explanation. The second conveying mechanism 41 and the third conveying mechanism 51 are implemented with reference to this structure.

[0044] See Figure 8 The first conveying mechanism 11 includes a support frame 111, an electric conveyor belt 112, and a limiting structure 113.

[0045] The support frame 111 is a vertical frame frame that can be formed by welding square steel or splicing aluminum profiles. The bottom of the support frame 111 is equipped with multiple adjustable feet to adjust the overall level and installation height of the frame, adapting to different on-site installation conditions.

[0046] The electric conveyor belt 112 is installed on the top of the support frame 111 and mainly consists of a drive motor, a drive roller, a driven roller and a conveyor belt. The drive motor drives the drive roller to rotate, which in turn drives the conveyor belt to rotate in a cycle, so that the energy storage battery box 6 placed on the belt is conveyed in a straight direction.

[0047] The limiting structure 113 is set on both sides above the electric conveyor belt 112 to provide lateral limiting and bottom auxiliary support for the energy storage battery box 6 during the conveying process.

[0048] See Figure 3 and Figure 4 The specific structure of the energy storage battery box 6 is as follows: The upper surface of the energy storage battery box 6 is provided with detection point 1 61, detection point 2 62, detection point 3 63, and transfer gripping part 64.

[0049] Among them, test point 1 61 is a square test interface area, and test points 2 62 and 3 63 are circular test interfaces. The three are arranged side by side along the width of the energy storage battery box 6, together forming the test point area.

[0050] The transfer gripping unit 64 is located on one side of the test point area and is an integrally formed mesh-reinforced planar area on the upper surface of the energy storage battery housing 6, with mesh reinforcing ribs protruding from the upper surface of the energy storage battery housing 6. This structure not only improves the local structural strength of the energy storage battery housing 6 but also provides an adsorption plane for the transfer unit 3. The test point and the absorption point are separated, ensuring that the transfer and adsorption processes do not come into contact, and that the test accuracy is not affected by the transfer operation.

[0051] The energy storage battery housing 6 is tested by setting up detection unit 2. The specific structure of detection unit 2 is as follows: See Figure 5 The detection unit 2 includes, from bottom to top, a base support 21, a lifting and adjusting mechanism 22, a positioning structure 23, a detection bracket 24, and a detection plate 25.

[0052] The base support 21 is a vertical frame structure, and the bottom of the base support 21 is equipped with adjustable support feet for horizontal calibration of the detection unit.

[0053] The lifting and adjusting mechanism 22 is used to assist in adjusting the position during the withstand voltage test so that the detection point of the energy storage battery box 6 contacts the adapter point of the detection plate 25, thereby conducting the withstand voltage test. The specific structure of the lifting and adjusting mechanism 22 is as follows: See Figure 7 The lifting and adjusting mechanism 22 is mounted on the base support 21 and includes a mounting base 221, a lifting and adjusting component 222, a connecting base 223, and several sets of guide structures 224. The mounting base 221 is horizontally fixed on the middle crossbeam of the base support 21, and the lifting and adjusting component 222 is fixedly installed at the center of the top surface of the mounting base 221, with its output end facing vertically upward. In this embodiment, the lifting and adjusting component 222 can be an electric push rod or a linear cylinder.

[0054] See Figure 7 The connecting seat 223 is horizontally arranged above the lifting adjustment component 222, and its bottom center is fixedly connected to the output end of the lifting adjustment component 222. It is driven by the lifting adjustment component 222 to perform reciprocating lifting and lowering motion in the vertical direction. Several sets of guide structures 224 are provided between the bottom of the connecting seat 223 and the mounting base 221. In this embodiment, four sets of guide structures 224 are provided. Each set of guide structures 224 includes a guide post and a linear bearing. The guide post is vertically fixed at the bottom corner of the connecting seat 223, and the linear bearing is correspondingly fixedly installed on the base bracket 21. The guide post passes through the linear bearing and forms a sliding fit. The guide structure 224 provides linear guidance for the lifting and lowering motion of the connecting seat 223, reducing the possibility of horizontal deviation or circumferential rotation of the connecting seat 223 during the lifting and lowering process.

[0055] The positioning structure 23 is fixedly installed on the top surface of the connector 223 and is used to support and laterally position the energy storage battery box 6 placed on it.

[0056] See Figure 7The detection bracket 24 is fixed to the top of the base bracket 21 and has an overall L-shaped structure, including a horizontal section and a vertical section that are perpendicularly connected to each other. The vertical section extends downward and is fixedly connected to the top of the base bracket 21, while the horizontal section extends overhead directly above the positioning structure 23. The detection plate 25 is suspended below the horizontal section, and several buffer members 26 are provided between the detection plate 25 and the horizontal section. In this embodiment, the buffer member 26 is a spring buffer column, and multiple sets of spring buffer columns are evenly distributed in the top corner area of ​​the detection plate 25. The upper end of the spring buffer column is connected to the bottom surface of the horizontal section of the detection bracket 24, and the lower end is connected to the top surface of the detection plate 25.

[0057] See Figure 5 The bottom surface of the test plate 25 is provided with three adapter points: 251 (first adapter point), 252 (second adapter point), and 253 (third adapter point). The positions of these three adapter points correspond to the test points 61 (first adapter point), 62 (second adapter point), and 63 (third adapter point) on the top surface of the energy storage battery housing 6, respectively. When the energy storage battery housing 6 rises to the test position with the lifting and adjusting mechanism 22, each adapter point and its corresponding test point are tightly fitted together, forming a test path for the withstand voltage test. The buffer 26 provides elastic cushioning during the fitting process, ensuring uniform contact pressure at multiple test points and reducing rigid impact damage to the test plate 25 and the test surface of the energy storage battery housing 6.

[0058] As a preferred embodiment, triangular reinforcing ribs are fixedly provided at the corners of the horizontal and vertical sections of the detection bracket 24 to improve the overall structural rigidity of the detection bracket 24.

[0059] The specific structure of transfer unit 3 is as follows: See Figure 2 The transfer unit 3 employs a six-axis industrial robot, which is fixedly installed on the ground or mounting platform to the side of the inspection unit 2. Its operating radius covers the end of the conveying unit 1, the inspection unit 2, the beginning of the qualified parts unloading unit 4, and the beginning of the problematic parts unloading unit 5. A vacuum suction cup assembly is installed on the end flange of the six-axis industrial robot. The suction cup layout of the vacuum suction cup assembly corresponds to the position of the transfer gripping part 64 on the top surface of the energy storage battery box 6, and grips the energy storage battery box 6 by vacuum negative pressure adsorption.

[0060] By adopting a main conveyor channel consisting of a conveying unit 1, a testing unit 2, and a qualified part unloading unit 4 connected in series, a problem part unloading unit 5 is set up parallel to the side of the qualified part unloading unit 4; a single transfer unit 3 is arranged to the side of the testing unit 2, and the operating radius simultaneously covers four core workstations: the feeding end, the testing station, the qualified discharge end, and the problem discharge end; thus forming a complete pressure resistance test by taking parts from the conveying unit 1, placing them in the testing unit 2 for positioning, and then splitting them into two discharge lines according to the results after testing.

[0061] In Example 2, the structure in Example 1 can be used to perform a pressure test on the energy storage battery box 6. However, during the actual test, the bottom of the energy storage battery box 6 has a certain tilt angle, and the energy storage battery box 6 as a whole has a certain height. That is, the energy storage battery box 6 not only needs to be limited on both sides, but the limit also needs to be set at a certain height. If only the electric conveyor belt 112 and the limit structure 113 are used for simple support and limit, the bottom of the energy storage battery box 6 will be suspended, and the middle will lack limit constraint. It is easy to tilt or deviate when the conveyor starts, stops, or accelerates. When the energy storage battery box 6 reaches the corresponding position, the position repeatability is low, and the robot in the transfer unit 3 is prone to deviation when grasping.

[0062] To improve the accuracy of the energy storage battery box 6 reaching the corresponding position and enhance the robot's grasping precision, the limiting structure 113 is designed with details. By further defining the specific structure within the limiting structure 113, the limiting support for the energy storage battery box 6 is achieved, reducing the possibility of the energy storage battery box 6 tilting or deviating during transport start-up, acceleration, and deceleration, thereby improving the accuracy of the energy storage battery box 6 reaching each workstation.

[0063] See Figure 9 The specific structure of the limiting structure 113 is as follows: The limiting structure 113 includes a first limiting frame 1131 and a second limiting frame 1132 symmetrically arranged. A cross frame 1133 connects the first limiting frame 1131 and the second limiting frame 1132. The first limiting frame 1131 and the second limiting frame 1132 extend along the entire conveying direction of the electric conveyor belt 112. The second limiting frame 1132 and the cross frame 1133 together form a U-shaped limiting frame. The U-shaped limiting frame is set on both sides of the electric conveyor belt 112. The inner facades of the first limiting frame 1131 and the second limiting frame 1132 are set opposite to the side of the energy storage battery box 6, forming a continuous lateral constraint surface.

[0064] Since the bottom of the energy storage battery box 6 has a certain tilt angle and the overall height of the energy storage battery box 6 is a certain height, in addition to setting the limiting frame 1131, the limiting frame 2132 on both sides and the electric conveyor belt 112 for support, it is also necessary to set limiting settings for the bottom and height of the energy storage battery box 6. Therefore, a fixing frame and a support frame are further set to limit it, reduce the possibility of the energy storage battery box 6 moving during transportation, and make it easier for the transfer unit 3 to grab it.

[0065] See Figure 10Multiple sets of fixing frames 1134 are fixed at equal intervals along the conveying direction on the outer wall of the limiting frame 1131. The fixing frame 1134 is L-shaped with an included angle of 90 degrees. One end of the fixing frame 1134 is fastened to the outer wall of the limiting frame 1131 by bolts, and the other end of the fixing frame 1134 is fixedly connected to the support frame 111.

[0066] See Figure 10 Multiple sets of fixing frames 1135 are fixed at equal intervals along the conveying direction on the outer wall of the limiting frame 1132. One end of the fixing frame 1135 is fastened to the outer wall of the limiting frame 1132 by bolts, and the other end of the fixing frame 1135 is fixedly connected to the support frame 111.

[0067] In this embodiment, the side of the fixing frame 2 1135 near the inner side of the conveyor belt for installing the support frame is an inclined side. The angle formed by the inclined side and the vertical direction matches the inclination angle of the bottom surface of the energy storage battery box 6. Its outer side is a vertical side, which is fastened to the outer wall of the limiting frame 2 1132 by bolts.

[0068] The lateral height of the energy storage battery box 6 is limited by setting a first fixing frame 1134 and a second fixing frame 1135, and the inclined side of the second fixing frame 1135 is further fitted to the inclined surface of the energy storage battery box 6 to increase the support contact surface.

[0069] See Figure 10 Furthermore, the limiting structure 113 also includes a long strip-shaped support frame 1136 and a support frame 2 1137 extending integrally along the conveying direction. The support frame 1136 and the support frame 2 1137 are respectively fixed on the fixed frame 2 1135, and multiple sets of the fixed frames 2 1135 are arranged at equal intervals along the conveying direction. The outer surfaces of the support frame 1136 and the support frame 2 1137 are sequentially attached to the inclined edges of multiple fixed frames 2 1135 and fastened with bolts, so that the support frame 1136 and the support frame 2 1137 are continuously supported at multiple points along their length, forming a stable support structure. The top surface of the support frame 1136 and the support frame 2 1137 is the bearing surface, which is adapted to the bottom surface of the energy storage battery box 6 and can contact the bottom edge of the energy storage battery box 6, forming auxiliary support for the bottom of the energy storage battery box 6.

[0070] As a preferred embodiment, wear-resistant lining strips are embedded on the top surfaces of both support bracket 1136 and support bracket 2137. The wear-resistant lining strips can reduce the frictional resistance between the bottom of the box and the support bracket.

[0071] Based on the above structure, a position detection sensor 1138 is installed on the crossbeam 1133. The position detection sensor 1138 is preferably a laser distance sensor, with its detection end facing inwards towards the conveyor channel. The position detection sensor 1138 is electrically connected to the drive control system of the electric conveyor belt 112 and the control system of the transfer unit 3 to achieve conveying positioning detection and full-process linkage control. The position detection sensor 1138 is used to detect the conveyed energy storage battery box 6. When the energy storage battery box 6 reaches the preset position, the electric conveyor belt 112 stops running.

[0072] In the first conveying mechanism 11, the second conveying mechanism 41, and the third conveying mechanism 51, the openings of the U-shaped limiting frames formed by each mechanism face the non-working area. Specifically, in the first conveying mechanism 11 and the qualified part unloading unit 4, the openings of the U-shaped limiting frames of the second conveying mechanism 41 face away from the detection unit 2; in the problematic part unloading unit 5, the openings of the U-shaped limiting frames of the third conveying mechanism 51 face away from the detection unit 2.

[0073] For different functions of the conveyor mechanism, the position detection sensor 1138 adopts differentiated trigger judgment logic: For the first conveying mechanism 11, the energy storage battery box 6 enters the conveying channel from the opening side of the U-shaped limiting frame and is conveyed to the end station where the cross frame 1133 is located. The position detection sensor 1138 detects the straight distance to the box in front in real time. When the detection distance continues to shorten to the preset positioning threshold, it is determined that the energy storage battery box 6 has been conveyed to the loading end station, and then the electric conveyor belt 112 is stopped and a grab signal is sent to the transfer unit 3.

[0074] For the second conveying mechanism 41 and the third conveying mechanism 51, the energy storage battery box 6 is placed in the conveying channel from the end closest to the detection unit 2 and conveyed to the downstream discharge end where the cross frame 1133 is located. The position detection sensor 1138 detects the straight distance to the box in front in real time. When the detection distance increases from near to far and exceeds the preset discharge threshold, it is determined that the energy storage battery box 6 has been conveyed through the unloading station and the discharge is completed. Then, a signal is sent to the transfer unit 3 to allow the unloading of the next box.

[0075] This setup ensures that the box has a uniform inner reference on each conveying mechanism, and the position status of the box can be accurately determined by the position detection sensor 1138, which facilitates the uniform grabbing and placement by the transfer unit 3. At the same time, it realizes the automated closed-loop linkage of conveying, transfer and testing processes without the need for manual intervention in the position status.

[0076] In Example 3, the structure described in Examples 1 and 2 can be used to limit the movement of the energy storage battery box 6 during transportation. It can also be used to perform a pressure test on the energy storage battery box 6. After the energy storage battery box 6 is transported to its position by the transport unit 1, the transfer unit 3 needs to grab the energy storage battery box 6 and place it on the positioning structure 23. In order to facilitate the placement of the energy storage battery box 6 and reduce the difficulty of alignment, the structure of the positioning structure 23 is specifically designed so that the positioning structure 23 fits the placement of the transfer unit 3.

[0077] The specific structure of positioning structure 23 is as follows: See Figure 7 The positioning structure 23 includes two sets of positioning seats 1 231, two sets of positioning seats 232, and two sets of positioning seats 3 233. All six sets of positioning seats are fastened to the top surface of the connecting seat 223 by bolts and arranged around the outer periphery of the energy storage battery box 6: the two sets of positioning seats 1 231 correspond to the gripping side of the energy storage battery box 6, the two sets of positioning seats 232 correspond to the detection side of the energy storage battery box 6, and the two sets of positioning seats 3 233 correspond to the front and rear end faces of the energy storage battery box 6. The two sets of positioning seats 1 231, the two sets of positioning seats 232, and the two sets of positioning seats 3 233 together restrict the horizontal degree of freedom of the box from multiple directions to achieve the positioning of the energy storage battery box 6.

[0078] Positioning seats 231, 232, and 233 all have guide chamfers on their inner sides. These chamfers slope downwards towards the outer side of the energy storage battery housing 6, making the entrance to the positioning area funnel-shaped. This facilitates the smooth placement of the energy storage battery housing 6 into the positioning area by the transfer unit 3, reducing the accuracy requirements for alignment. Elastic buffer pads are affixed to the inner limiting surfaces of each positioning seat to prevent rigid collisions during placement of the energy storage battery housing 6 and protect its appearance.

[0079] In this embodiment, the dimensions of the two sets of positioning seats 1 231 are larger than the dimensions of the two sets of positioning seats 232 and the two sets of positioning seats 3 233, so as to provide a larger support area and limiting force, reduce the impact load generated when the transfer unit 3 places the energy storage battery box 6, and improve the placement stability of the energy storage battery box 6.

[0080] In the specific test, two sets of positioning seats 232 are set below the detection areas corresponding to detection points 1 61, 2 62, and 3 63 for support. That is, the two sets of positioning seats 232 are set to correspond to the detection plate 25, and the transfer gripping part 64 corresponds to the gripping of the transfer unit 3. The bottom of the transfer gripping part 64 is supported by the two sets of positioning seats 231. Detection points 1 61, 2 62, 3 63 and the transfer gripping part 64 are set on both sides.

[0081] The specific workflow is as follows: The energy storage battery box 6 to be tested is placed on the first conveying mechanism 11 of the conveying unit 1 by manual operation or feeding equipment. The electric conveyor belt 112 is started and drives the box forward. During the conveying process, the U-shaped limit frame limits the energy storage battery box 6 laterally, and the support frame 1136 and the support frame 2137 provide auxiliary support for the bottom edge of the energy storage battery box 6. The position detection sensor 1138 at the end of the first conveying mechanism 11 detects the distance of the box in real time. When the detected distance continues to decrease to the preset arrival threshold, it is determined that the energy storage battery box 6 has reached the end feeding station. Then, a stop command is sent to the drive control system, the electric conveyor belt 112 stops running, and a grab ready signal is sent to the transfer unit 3.

[0082] The six-axis industrial robot of the transfer unit 3 moves the end-effector vacuum suction cup assembly to the top of the energy storage battery box 6 at the transfer station. The suction cup is aligned with the transfer gripper 64 on the top surface of the energy storage battery box 6, and the vacuum generator is activated to generate negative pressure, which lifts the energy storage battery box 6. Then the robot moves the energy storage battery box 6 to the top of the positioning structure 23 of the detection unit 2 and slowly lowers the energy storage battery box 6. Guided by the chamfered guide on the top of the positioning seat, the energy storage battery box 6 falls into the positioning area surrounded by six sets of positioning seats, completing the lateral positioning. Then the vacuum suction cup breaks the vacuum, and the robot end-effector moves out of the detection station.

[0083] When the lifting adjustment component 222 is activated, the output end extends and drives the connecting seat 223, the positioning structure 23, and the energy storage battery box 6 to rise vertically together; during the rise of the box, the detection points 1 61, 2 62, and 3 63 on the top surface gradually align with the matching points 1 251, 2 252, and 3 253 on the bottom surface of the detection plate 25; the buffer component 26 is gradually compressed to provide elastic clamping force, so that each test point has good contact and uniform pressure.

[0084] Once the contact points are properly aligned, the external withstand voltage testing equipment, which is electrically connected to the testing board 25, is activated. It performs a withstand voltage performance test on the energy storage battery box 6 according to the preset test parameters and automatically records the test results.

[0085] After the test is completed, the lifting adjustment component 222 drives the energy storage battery box 6 to descend and reset; the transfer unit 3 performs sorting and transfer based on the test results fed back by the system. If the energy storage battery box 6 passes the pressure resistance test, the robot picks up the energy storage battery box 6 from the positioning structure 23 and transfers it to the loading end of the second conveying mechanism 41 of the qualified part unloading unit 4. After placement, the second conveying mechanism 41 is started, driving the qualified box to the downstream discharge end. After the position detection sensor 1138 of the discharge end of the second conveying mechanism 41 detects the box passing by, the detection distance changes from near to far and exceeds the preset threshold, it determines that the box has been discharged and sends a signal to the system to complete the unloading, allowing the transfer unit 3 to perform the next unloading action. The second conveying mechanism 41 then continuously transports the qualified energy storage battery box to the downstream process. If the energy storage battery box 6 fails the withstand voltage test, it is considered a defective part. The robot picks up the energy storage battery box 6 and transfers it to the loading end of the third conveying mechanism 51 of the defective part unloading unit 5. After placement, the third conveying mechanism 51 is started, driving the defective box to the downstream discharge end. When the position detection sensor 1138 at the discharge end of the third conveying mechanism 51 detects the box passing by, the detection distance changes from near to far and exceeds the preset threshold, it determines that the defective part has been discharged and sends a discharge completion signal to the system. The third conveying mechanism 51 then transports the defective box to the rework area or the defective product storage area.

[0086] This completes the withstand voltage test and sorting of a single energy storage battery box 6. The system can continuously test and produce energy storage battery boxes 6 by repeating the above process.

[0087] Obviously, the embodiments described above are merely some, not all, embodiments of the present invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort should fall within the scope of protection of the present invention.

Claims

1. A voltage withstand testing system for energy storage battery housings, characterized in that: It includes a conveying unit (1), a detection unit (2), a transfer unit (3), a qualified parts unloading unit (4), and a defective parts unloading unit (5); The conveying unit (1) includes a first conveying mechanism (11); The first conveying mechanism (11) includes a limiting structure (113), which is used to limit the energy storage battery box (6) during conveying; The detection unit (2) includes a lifting adjustment mechanism (22), a positioning structure (23), and a detection plate (25); The lifting and adjusting mechanism (22) is used to drive the positioning structure (23) and the energy storage battery box (6) placed on the positioning structure (23) to adjust their positions in the vertical direction; The upper surface of the energy storage battery box (6) is provided with a test point area and an absorption point area. The test point area is provided with several detection points, and the absorption point area is provided with a transfer gripping part (64) for the transfer unit (3) to absorb. The positioning structure (23) includes two sets of positioning seats one (231) and two sets of positioning seats two (232). The two sets of positioning seats one (231) are supported on the side where the absorption point area is located, and the two sets of positioning seats two (232) are supported on the side where the test point area is located; and the size of the positioning seat one (231) is larger than the size of the positioning seat two (232).

2. The energy storage battery housing withstand voltage testing system according to claim 1, characterized in that: The test point area is equipped with test point one (61), test point two (62), and test point three (63). The bottom of the detection plate (25) is provided with adapter point 1 (251), adapter point 2 (252), and adapter point 3 (253) in sequence. The adapter point 1 (251), adapter point 2 (252), and adapter point 3 (253) are respectively set to correspond to detection point 1 (61), detection point 2 (62), and detection point 3 (63).

3. The energy storage battery housing withstand voltage testing system according to claim 1, characterized in that: The positioning structure (23) also includes two sets of positioning seats (233). The two sets of positioning seats (231), the two sets of positioning seats (232), and the two sets of positioning seats (233) are all fixed to the top surface of the connecting seat (223) and arranged around the outer periphery of the energy storage battery box (6). The two sets of positioning seats (233) are supported at both ends of the energy storage battery box (6). The size of the two sets of positioning seats (231) is larger than the size of the two sets of positioning seats (233). Among them, the two sets of positioning seats one (231), the two sets of positioning seats two (232) and the two sets of positioning seats three (233) constitute the positioning area of ​​the energy storage battery box (6). Each set of positioning seats one (231), positioning seat two (232) and positioning seat three (233) has a guide chamfer on its inner side. The guide chamfer is inclined from top to bottom toward the outside of the energy storage battery box (6), so that the entrance of the positioning area is horn-shaped.

4. The energy storage battery housing withstand voltage testing system according to claim 1, characterized in that: The lifting adjustment mechanism (22) includes a mounting base (221), which is fixed on the base support (21). A lifting adjustment component (222) is fixed on the mounting base (221). The output end of the lifting adjustment component (222) is connected to a connecting seat (223). Several guide structures (224) are provided between the connecting seat (223) and the base support (21).

5. The energy storage battery housing withstand voltage testing system according to claim 1, characterized in that: The detection unit (2) also includes a base support (21), and a detection bracket (24) is provided on the top of the base support (21). The detection bracket (24) has an L-shaped structure and includes a horizontal section and a vertical section. The vertical section is fixedly connected to the base support (21). The detection plate (25) is located below the horizontal section. Several buffers (26) are provided between the detection plate (25) and the horizontal section.

6. The energy storage battery housing withstand voltage testing system according to claim 1, characterized in that: The qualified parts unloading unit (4) and the problematic parts unloading unit (5) respectively include a second conveying mechanism (41) and a third conveying mechanism (51), and the first conveying mechanism (11), the second conveying mechanism (41) and the third conveying mechanism (51) have the same structure.

7. The energy storage battery housing withstand voltage testing system according to claim 6, characterized in that: The first conveying mechanism (11) includes a support frame (111), on which an electric conveyor belt (112) is provided, and the limiting structure (113) is located on the outside of the electric conveyor belt (112).

8. The energy storage battery housing withstand voltage testing system according to claim 7, characterized in that: The limiting structure (113) includes a first limiting frame (1131) and a second limiting frame (1132) symmetrically arranged. A cross frame (1133) is connected between the first limiting frame (1131) and the second limiting frame (1132). The first limiting frame (1131), the second limiting frame (1132) and the cross frame (1133) together form a U-shaped limiting frame with the opening facing outward. The U-shaped limiting frame is set on the outside of the electric conveyor belt (112). The U-shaped limiting frame is used to limit the side of the energy storage battery box (6). A position detection sensor (1138) is set on the side of the cross frame (1133) facing the energy storage battery box (6). The position detection sensor (1138) is used to detect the position of the energy storage battery box (6).

9. The energy storage battery housing withstand voltage testing system according to claim 8, characterized in that: Multiple sets of fixing frames (1134) are equidistantly arranged on the outer side of the limiting frame (1131). One end of each set of fixing frames (1134) is fixedly connected to the limiting frame (1131), and the other end of each set of fixing frames (1134) is fixedly connected to the support frame (111). Multiple sets of fixing frames (1135) are equidistantly arranged on the outer side of the limiting frame (1132). One end of each set of fixing frames (1135) is fixedly connected to the limiting frame (1132), and the other end of each set of fixing frames (1135) is fixedly connected to the support frame (111).

10. The energy storage battery housing withstand voltage testing system according to claim 9, characterized in that: The limiting structure (113) also includes a support frame one (1136) and a support frame two (1137). The support frame one (1136) and the support frame two (1137) are both fixed on multiple sets of fixed frames two (1135). The top of the support frame one (1136) and the support frame two (1137) are used to contact the bottom of the energy storage battery box (6) to support the bottom of the energy storage battery box (6).

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