Automatic plugging test device for battery module connector

Abstract

The invention discloses a battery module connector automatic plugging test device, and relates to the technical field of battery module connector plugging test appliances, the battery module connector automatic plugging test device comprises an electric control cabinet, one side of the electric control cabinet is provided with a base, the top surface of the base is provided with a clamping moving assembly, one side of the base is provided with a logistics frame, and the upper end of the logistics frame is provided with a test assembly; according to the invention, through cooperation of the collaborative robot and the industrial camera, automatic identification and replacement of the adaptive plugging quick-change test head are facilitated, and product defects caused by testing are reduced; through the cooperation of the collaborative robot and the logistics plate, the test work can be completed through machinery, the plugging test efficiency is improved, and the labor intensity and the production cost are reduced. Through the cooperation of the quick-change frame and the quick-change seat, the quick-change test head can be conveniently and quickly installed on the mechanical arm of the collaborative robot, the situation that a module plug is easily damaged due to the fact that the test plug is taken by mistake due to similar plug models when a manual plugging test is carried out by a worker is avoided, and the detection effect is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of battery module connector plug-in and pull-out testing tools, and in particular to an automatic plug-in and pull-out testing device for a battery module connector. Background Art

[0002] In order to ensure the factory quality of new energy battery modules and determine the qualified rate of different batches of batteries, batteries often need to be tested after being processed into finished modules; in order to avoid battery damage or unusability due to unqualified quality of battery module units, manufacturers need to test battery module units to detect whether they are good products; during the test process, there is a plug-in test for battery module units, the method is to select a male plug that matches the connector of the battery module unit to be tested, and plug it with the battery module unit to be tested for plug-in test. The tester reads the voltage, temperature and other parameters of each battery cell of the module. If the parameters are within the specified range, it means that the plug-in test of the battery module unit to be tested is successful; the general battery module unit test has a fast tact. If it relies on manual plug-in, it will consume a considerable labor cost and have low efficiency; In major enterprises, the plug-in and pull-out tests of battery module units mostly require manual handheld test heads to connect to the battery module units for direct testing, which is slow and inefficient. Moreover, during the installation process, it is difficult for operators to hold and align the installation holes, which can easily damage the battery module connector pins. Different battery module connectors have different shapes, and different male heads need to be replaced, which also leads to low efficiency and affects production. During the automatic plug-in and pull-out test, the plug-in and pull-out test force and time cannot be intelligently adjusted according to the placement status of the connector and the loss status of the electrode, which causes damage to the connector electrodes during the test. In addition, some test results cannot accurately represent the status of the connector due to the short test time. The appearance of the battery module is not inspected, which affects the stability of the connector in the battery module during transportation. Therefore, improvements need to be made based on the above problems. Summary of the invention

[0003] The purpose of the present invention is to solve the shortcomings of the prior art and to propose an automatic plug-in and pull-out test device for battery module connectors.

[0004] In order to achieve the above-mentioned objectives, the present invention adopts the following technical solutions: a battery module connector automatic plug-in and unplugging test device, comprising an electric control cabinet, a base is provided on one side of the electric control cabinet, a clamping moving component is installed on the top surface of the base, and a logistics rack is provided on one side of the base, and a test component is provided on the upper end of the logistics rack.

[0005] Preferably, the clamping and moving assembly includes a quick-change rack installed laterally at the rear end of the top surface of the base, a plurality of equidistant quick-change seats are installed laterally on the top surface of the quick-change rack, the mounting opening of the quick-change seat is located at the rear end, and a quick-change test head is installed at the mounting opening of the quick-change seat.

[0006] Preferably, a collaborative robot is installed on one side of the front end of the top surface of the base, and a connecting head is installed on one end of the mechanical arm of the collaborative robot.

[0007] Preferably, an industrial camera is installed on one side of the connector, and the lower end of the connector is snap-connected with a quick-change test head.

[0008] Preferably, the test assembly includes guide rails longitudinally installed on both sides of the upper end of the logistics rack, and a plurality of equidistant rollers are rotatably connected inside the guide rails. A logistics plate is horizontally provided on the upper end of the logistics rack, and both sides of the bottom surface of the logistics plate are slidably connected to the guide rails, and the bottom surface of the logistics plate is in contact with the rollers, and a battery module is longitudinally installed in the middle of the top surface of the logistics plate.

[0009] Preferably, the test analysis module performs the following steps to determine the stable state of the connector: M1: Obtain the distance data between any three corners of the four corners of each connector on the battery module and the distance measuring device, and compare the obtained distance data; M2: If one of the three detected spacing data with respect to the corners is not equal to the spacing data of the other two corners, it is determined that the connector placement at the detection position is unstable, a stable adjustment signal is generated, and the stable adjustment signal is transmitted to the test adjustment module.

[0010] Preferably, the test analysis module performs the following steps to determine the appearance damage of the battery module: S1: Obtain image data of the four side walls of the battery module and perform grayscale processing, depict the outline of the battery module in the grayscale processed image, then segment the image outside the depicted outline, segment the remaining grayscale image according to the size of the pixel block, and record the grayscale value of the corresponding pixel block; S2: According to the number of rows corresponding to the pixel block in the outline and number of columns Mark the pixel blocks as , the pixel block The gray value of the pixel block is compared with the gray value of the preset standard pixel block. The absolute value of the difference between the gray value of the pixel block and the gray value of the preset standard pixel block is greater than the preset comparison threshold, then the pixel block is determined to be There is an abnormality at the corresponding position; S3: Detect the grayscale values ​​of the adjacent pixel blocks with abnormal pixel blocks. If the absolute value of the difference between the grayscale value of the adjacent pixel block and the grayscale value of the preset standard pixel block is greater than the preset comparison threshold, the adjacent pixel block is determined to be an abnormal pixel block. and the number of columns Determine the position of the adjacent pixel block next to the abnormal pixel block. If the adjacent pixel block has the same number of rows as the abnormal pixel block, then count horizontally. The count is increased by one; if the number of columns of the adjacent pixel block is the same as that of the abnormal pixel block, the vertical count is increased by one. The count increases by one; S4: If the preset counting threshold or or , it is determined that the appearance of the battery module is abnormal, an appearance warning signal is generated, and the appearance warning signal is transmitted to the test adjustment module.

[0011] Preferably, the test analysis module performs the following steps to analyze the electrode status: K1: grayscale processing is performed on the image data of the connector on the battery module, and then the occupied area blocks are drawn on the grayscale image according to the position of the connector on the battery module. In the corresponding area block, the position of the corresponding electrode is located according to the horizontal and vertical distances between the corresponding electrode and the corresponding boundary of the area block, and then the number of pixel blocks occupied by the electrode at the electrode positioning position is calculated. The grayscale value is counted and the grayscale mean at the clicked position is calculated. , and then the number of pixels occupied by the electrode The number of pixels occupied by lossless electrodes Make comparisons; K2: If , it is determined that the detection electrode is worn, a force adjustment signal is generated, and the force adjustment signal is transmitted to the test adjustment module; if the preset electrode grayscale threshold , it is determined that there is an abnormality at the corresponding electrode position, an electrical measurement adjustment signal is generated, and the electrical measurement adjustment signal is transmitted to the test adjustment module.

[0012] Preferably, the steps of operating the test adjustment module are as follows: N1: After receiving the stable adjustment signal, the test adjustment module controls the warning light to emit an audible and visual alarm to notify the staff to come and adjust the connector, and displays "Connector unstable" on the display screen of the electric control cabinet. ”, Indicates horizontal Row connector, Indicates vertical row connector; N2: After receiving the appearance warning signal, the test adjustment module controls the warning light to sound a buzzer alarm to notify the staff to come and adjust the connector, and displays "Appearance Warning" on the display screen of the electric control cabinet. ”, Indicates the side of the battery module face; N3: After receiving the force adjustment signal, the test adjustment module reduces the force of plugging and unplugging according to the set ratio and increases the number of plugging and unplugging. After receiving the electrical measurement adjustment signal, the test adjustment module increases the test frequency of the electrode contact resistance according to the set ratio and extends the duration of each test.

[0013] Compared with the prior art, the present invention has the following beneficial effects: 1. Through the cooperation of collaborative robots and industrial cameras, it is easy to automatically identify and replace the quick-change test heads for plug-in, reducing product defects caused by testing; through the cooperation of collaborative robots and logistics boards, it is easy to complete the testing work mechanically, improve the efficiency of plug-in testing, and reduce labor intensity and production costs; through the cooperation of quick-change racks and quick-change seats, it is easy to quickly install the quick-change test heads on the robotic arms of collaborative robots, avoiding the situation where manual plug-in tests are performed by hand and the wrong test plugs are taken because of the similarity of different plug models, which can easily damage the module plugs, thereby improving the detection effect; 2. By obtaining the distance data between the four corners of each connector on the battery module and the distance measuring device, determine whether the connector is placed stably. Once instability is detected, generate a stable adjustment signal in time and notify the staff to handle it, avoiding test errors and potential damage caused by connector placement problems; compare indicators such as the number of pixel blocks occupied by electrodes and grayscale values. When electrode wear or abnormality is detected, automatically reduce the plugging and unplugging force according to the set ratio, increase the number of plugging and unplugging times, or increase the frequency of electrode contact resistance testing and extend the test duration, effectively preventing unnecessary damage to the connector electrodes during the test, ensuring that the test results can accurately reflect the actual status of the connector, and greatly improving the accuracy and reliability of the test; 3. By inspecting the appearance of the battery module, it is effective to detect whether there is any damage on the appearance of the battery module, and when an abnormal appearance is detected, an appearance warning signal is quickly generated to notify the staff, thereby ensuring the stability of the connector in the battery module during transportation and subsequent use, reducing the risk of product defects caused by appearance problems, and further improving the overall quality and safety of the product, providing a strong guarantee for the efficient and high-quality production of new energy battery modules. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] The drawings described herein are used to provide a further understanding of the present invention and constitute a part of this application. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation of the present invention. In the drawings: Figure 1 This is a schematic diagram of the overall three-dimensional structure of the testing device proposed by the present invention; Figure 2 This is a schematic diagram of the three-dimensional structure of the logistics rack proposed by the present invention; Figure 3 A schematic diagram of a quick-change test head proposed by the present invention; Figure 4 The present invention proposes Figure 1 A schematic diagram of the enlarged structure of the middle A part; Figure 5 The present invention proposes Figure 1 A schematic diagram of the structure of the middle B part; Figure 6 The present invention proposes Figure 1 A magnified schematic diagram of the structure of the middle C part; Figure 7 It is a system flow chart of the present invention.

[0015] Serial numbers in the figure: 1. Electric control cabinet; 2. Base; 3. Logistics rack; 4. Quick-change rack; 5. Quick-change seat; 6. Quick-change test head; 7. Collaborative robot; 8. Industrial camera; 9. Guide rail; 10. Roller; 11. Logistics board; 12. Battery module. DETAILED DESCRIPTION

[0016] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0017] Example: See Figure 1-7 , an automatic plug-in and unplug test device for a battery module connector in the present invention comprises an electric control cabinet 1, a base 2 is provided on one side of the electric control cabinet 1, a clamping and moving assembly is installed on the top surface of the base 2, and a logistics rack 3 is provided on one side of the base 2, and a test assembly is provided on the upper end of the logistics rack 3; the electric control cabinet 1 is used to control the operation of the collaborative robot 7; the base 2 is used to install the quick-change rack 4 and the collaborative robot 7; the logistics rack 3 is used to install the guide rail 9; the clamping and moving assembly comprises a quick-change rack 4 installed laterally at the rear end of the top surface of the base 2, a plurality of equidistant quick-change seats 5 are installed laterally on the top surface of the quick-change rack 4, the installation port of the quick-change seat 5 is located at the rear end, and a quick-change test head 6 is installed at the installation port of the quick-change seat 5; the quick-change seat 5 is installed conveniently through the quick-change rack 4; the quick-change test head 6 is installed conveniently through the quick-change seat 5; a collaborative robot 7 is installed on one side of the front end of the top surface of the base 2, and a connector is installed at one end of the mechanical arm of the collaborative robot 7; the industrial camera 8 is installed conveniently through the connector, and the quick-change test head 6 is also conveniently connected.

[0018] In the present invention, an industrial camera 8 is installed on one side of the connecting head, and the lower end of the connecting head is clamped with the quick-change test head 6; the industrial camera 8 is used to facilitate monitoring of the positional relationship between the quick-change test head 6 and the battery module 12; the test component includes guide rails 9 longitudinally installed on both sides of the upper end of the logistics rack 3, and a plurality of equidistant rollers 10 are rotatably connected inside the guide rails 9; a logistics plate 11 is horizontally provided on the upper end of the logistics rack 3, and both sides of the bottom surface of the logistics plate 11 are slidably connected to the guide rails 9, and the bottom surface of the logistics plate 11 abuts against the rollers 10; the movement of the logistics plate 11 is facilitated by the guide rails 9 and the rollers 10; the battery module 12 is conveniently installed through the logistics plate 11; the battery module 12 is longitudinally installed in the middle of the top surface of the logistics plate 11; the battery module 12 is convenient for testing.

[0019] The electric control cabinet 1 is also provided with a test acquisition module, a test analysis module and a test adjustment module; A test acquisition module collects image data of the battery module 12 and transmits the collected image data to the test analysis module; The test analysis module processes and analyzes the image data of the battery module 12, determines whether the placement state of the connector of the battery module 12 is stable, determines whether the appearance of the battery module 12 is damaged, determines whether the electrodes of the connector are worn or abnormal, and generates a corresponding signal when it is determined to be unstable, damaged, worn or abnormal, and transmits the signal to the test adjustment module; The test adjustment module identifies the received signal and then performs the operation corresponding to the signal; After the battery module 12 moves to the designated position, the collaborative robot 7 located above the battery module 12 reads the code of the battery module 12 to obtain the corresponding information of the battery module 12, and then uses the corresponding quick-change test head 6 according to the obtained corresponding information; After the collaborative robot 7 uses the quick-change test head 6, when it moves to the top of the battery module 12 again, it acquires the image data and distance data of the battery module 12, and acquires the distance data between any three corners of the four corners of each connector on the battery module 12 and the distance measuring device. If one of the three distance data detected between the corners is not equal to the distance data of the other two corners, it is determined that the connector at the detection position is unstable, and a stable adjustment signal is generated. After receiving the stable adjustment signal, the test adjustment module controls the warning light to emit an audible and visual alarm to notify the staff to come and adjust the connector, and displays "Connector unstable" on the display screen of the electric control cabinet 1. ”, Indicates horizontal Row connector, Indicates vertical row connector; After determining that the connector is placed stably, the image data of the four side walls of the battery module 12 are grayed, and the outline of the battery module 12 is depicted in the grayed image. The image outside the outline is segmented, and the remaining gray image is segmented according to the size of the pixel block, and the gray value of the corresponding pixel block is recorded; according to the number of rows corresponding to the pixel block on the outline, and the number of columns Mark the pixel blocks as , the pixel block The gray value of the pixel block is compared with the gray value of the preset standard pixel block. The absolute value of the difference between the gray value of the pixel block and the gray value of the preset standard pixel block is greater than the preset comparison threshold, then the pixel block is determined to be There is an abnormality at the corresponding position; The grayscale values ​​of the adjacent pixel blocks of the abnormal pixel block are detected. If the absolute value of the difference between the grayscale value of the adjacent pixel block and the grayscale value of the preset standard pixel block is greater than the preset comparison threshold, the adjacent pixel block is determined to be an abnormal pixel block. and the number of columns Determine the position of the adjacent pixel block next to the abnormal pixel block. If the adjacent pixel block has the same number of rows as the abnormal pixel block, then count horizontally. The count is increased by one; if the number of columns of the adjacent pixel block is the same as that of the abnormal pixel block, the vertical count is increased by one. The count increases by one; if the preset count threshold or or , it is determined that the appearance of the battery module 12 is abnormal, and an appearance warning signal is generated. After receiving the appearance warning signal, the test adjustment module controls the warning light to emit a buzzer alarm to notify the staff to come to adjust the connector, and displays "Appearance Warning" on the display screen of the electric control cabinet 1. ”, The side of the battery module 12 is shown in FIG. The sides of the battery module 12 close to the collaborative robot 7 are the first side, and the numbers are counted clockwise; The image data of the connector on the battery module 12 is gray-scaled, and then the occupied area block is drawn on the gray-scale image according to the position of the connector on the battery module 12. In the corresponding area block, the position of the corresponding electrode is located according to the horizontal distance and vertical distance between the corresponding electrode and the corresponding boundary of the area block. Then, the number of pixel blocks occupied by the electrode at the electrode positioning position is calculated. The grayscale value is counted and the grayscale mean at the corresponding position of the electrode is calculated , and then the number of pixels occupied by the electrode The number of pixels occupied by lossless electrodes For comparison, if , it is determined that the detection electrode is worn and a force adjustment signal is generated. After receiving the force adjustment signal, the test adjustment module reduces the plugging and unplugging force according to the set ratio and increases the number of plugging and unplugging times; if the preset electrode grayscale threshold , it is determined that there is an abnormality at the corresponding electrode position and an electrical measurement adjustment signal is generated. After receiving the electrical measurement adjustment signal, the test adjustment module increases the test frequency of the electrode contact resistance according to the set ratio and extends the duration of each test.

[0020] Working principle: When the present invention is used, first connect the electric control cabinet 1 to the wires and conduct electricity, then install the battery module 12 on the logistics board 11, and then control the logistics board 11 to move to the specified position through the guide rail 9 and the roller 10. When the logistics board 11 moves to the specified position, stop moving the logistics board 11, and then start the electric control cabinet 1. Control the movement of the collaborative robot 7 through the electric control cabinet 1 to release the clamping connection between the quick-change test head 6 in the quick-change seat 5 on the quick-change frame 4 and the quick-change seat 5, then take the quick-change test head 6 out of the quick-change seat 5 and move it to just above the battery module 12, then plug the quick-change test head 6 into the battery module 12 to perform an electrical test on the module. After the test is completed, the plug-in and detach are used to complete the test action; then control the collaborative robot 7 to replace the next quick-change test head 6 for testing.

[0021] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A battery module connector automatic plug-in and pull-out test device, comprising an electric control cabinet (1), characterized in that: A base (2) is provided on one side of the electric control cabinet (1), a clamping moving component is installed on the top surface of the base (2), and a logistics rack (3) is provided on one side of the base (2), and a test component is provided on the upper end of the logistics rack (3); The clamping moving assembly comprises a quick-change frame (4) installed transversely on the rear end of the top surface of the base (2); a plurality of equidistant quick-change seats (5) are installed transversely on the top surface of the quick-change frame (4); the mounting opening of the quick-change seat (5) is located at the rear end, and a quick-change test head (6) is installed on the mounting opening of the quick-change seat (5); a collaborative robot (7) is installed on one side of the front end of the top surface of the base (2); a connector is installed on one end of the mechanical arm of the collaborative robot (7); an industrial camera (8) is installed on one side of the connector; and The lower end of the connector is snap-connected to the quick-change test head (6); the test assembly comprises guide rails (9) longitudinally mounted on both sides of the upper end of the logistics rack (3); a plurality of equally spaced rollers (10) are rotatably connected inside the guide rails (9); a logistics plate (11) is horizontally disposed at the upper end of the logistics rack (3); both sides of the bottom surface of the logistics plate (11) are slidably connected to the guide rails (9), and the bottom surface of the logistics plate (11) is in contact with the rollers (10); and a battery module (12) is longitudinally mounted in the middle of the top surface of the logistics plate (11); The electric control cabinet (1) is also provided with a test collection module, a test analysis module and a test adjustment module; A test acquisition module, which acquires image data of the battery module (12) and transmits the acquired image data to the test analysis module; a test analysis module for processing and analyzing image data of the battery module (12), determining whether the placement state of the connector of the battery module (12) is stable, determining whether the appearance of the battery module (12) is damaged, determining whether the electrodes of the connector are worn or abnormal, and generating a corresponding signal when determining instability, damage, wear or abnormality, and transmitting the signal to the test adjustment module; The test adjustment module identifies the received signal and then performs the operation corresponding to the signal.

2. The battery module connector automatic plug-in and pull-out test device according to claim 1, characterized in that: The steps for the test analysis module to determine the stable state of the connector are as follows: M1: Obtaining the distance data between any three corners of the four corners of each connector on the battery module (12) and the distance measuring device, and comparing the obtained distance data; M2: If one of the three detected spacing data with respect to the corners is not equal to the spacing data of the other two corners, it is determined that the connector placement at the detection position is unstable, a stable adjustment signal is generated, and the stable adjustment signal is transmitted to the test adjustment module.

3. The battery module connector automatic plug-in and pull-out test device according to claim 2, characterized in that: The test analysis module performs the following steps to determine the appearance damage of the battery module (12): S1: acquiring image data of four side walls of the battery module (12), performing grayscale processing, depicting the outline of the battery module (12) in the grayscale processed image, then segmenting the image outside the depicted outline, segmenting the remaining grayscale image according to the size of the pixel blocks, and recording the grayscale values ​​of the corresponding pixel blocks; S2: According to the number of rows corresponding to the pixel block in the outline and number of columns Mark the pixel blocks as , the pixel block The gray value of the pixel block is compared with the gray value of the preset standard pixel block. The absolute value of the difference between the gray value of the pixel block and the gray value of the preset standard pixel block is greater than the preset comparison threshold, then the pixel block is determined to be There is an abnormality at the corresponding position; S3: Detect the grayscale values ​​of the adjacent pixel blocks with abnormal pixel blocks. If the absolute value of the difference between the grayscale value of the adjacent pixel block and the grayscale value of the preset standard pixel block is greater than the preset comparison threshold, the adjacent pixel block is determined to be an abnormal pixel block. and number of columns Determine the position of the adjacent pixel block next to the abnormal pixel block. If the adjacent pixel block has the same number of rows as the abnormal pixel block, then count horizontally. The count is increased by one; if the number of columns of the adjacent pixel block is the same as that of the abnormal pixel block, the vertical count is increased by one. The count is increased by one; S4: If the preset counting threshold or or , it is determined that the appearance of the battery module (12) is abnormal, an appearance warning signal is generated, and the appearance warning signal is transmitted to the test adjustment module.

4. The battery module connector automatic plug-in and pull-out test device according to claim 3, characterized in that: The test analysis module performs the following steps to analyze the electrode status: K1: grayscale processing is performed on the image data of the connector on the battery module (12), and then the occupied area block is drawn on the grayscale image according to the position of the connector on the battery module (12). Within the corresponding area block, the position of the corresponding electrode is located according to the horizontal distance and vertical distance between the corresponding electrode and the corresponding boundary of the area block, and then the number of pixel blocks occupied by the electrode at the electrode location is calculated. The grayscale value is counted and the grayscale mean at the corresponding position of the electrode is calculated , and then the number of pixels occupied by the electrode The number of pixels occupied by lossless electrodes Make comparisons; K2: If , it is determined that the detection electrode is worn, a force adjustment signal is generated, and the force adjustment signal is transmitted to the test adjustment module; if the preset electrode grayscale threshold , it is determined that there is an abnormality at the corresponding electrode position, an electrical measurement adjustment signal is generated, and the electrical measurement adjustment signal is transmitted to the test adjustment module.

5. The battery module connector automatic plug-in and pull-out test device according to claim 4, characterized in that: The steps to perform the test adjustment module operation are as follows: N1: After receiving the stable adjustment signal, the test adjustment module controls the warning light to emit an audible and visual alarm to notify the staff to come and adjust the connector, and displays "Connector unstable" on the display screen of the electric control cabinet (1). ”, Indicates horizontal Row connector, Indicates vertical row connector; N2: After receiving the appearance warning signal, the test adjustment module controls the warning light to emit a buzzer alarm to notify the staff to come and adjust the connector, and displays "Appearance Warning" on the display screen of the electric control cabinet (1). ”, Indicates the side of the battery module (12) face; N3: After receiving the force adjustment signal, the test adjustment module reduces the force of plugging and unplugging according to the set ratio and increases the number of plugging and unplugging. After receiving the electrical measurement adjustment signal, the test adjustment module increases the test frequency of the electrode contact resistance according to the set ratio and extends the duration of each test.

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