New energy battery box semi-product airtightness detection equipment

Abstract

The invention relates to the technical field of air tightness detection equipment, and provides new energy battery box semi-product air tightness detection equipment which comprises a main body frame, the top of the main body frame is slidably connected with a supporting table, the inner side of the main body frame is provided with a translation mechanism used for driving the supporting table to move in the horizontal direction, and a top frame is arranged above the main body frame. The four corners of the bottom wall of the top frame are fixedly connected with connecting columns, the bottoms of the four connecting columns are fixedly connected with the main body frame, the bottom of the top frame is provided with a positioning mechanism used for positioning the battery box semi-finished product, and the inner side of the top frame is provided with an air tightness detection assembly used for detecting the air tightness of the battery box semi-finished product. The pressure sensor is used for monitoring the change of air pressure in the battery box in real time, data are processed through the single-chip microcomputer, the leakage rate is accurately calculated, and the problem that traditional manual visual judgment errors are large is solved.

Description

Technical Field

[0001] The present invention relates to the technical field of airtightness detection equipment, and in particular to an airtightness detection equipment for a semi-product of a new energy battery box. Background Art

[0002] With the rapid development of new energy vehicles, energy storage systems and consumer electronics industries, the airtightness of battery boxes, as the core packaging components of power batteries or energy storage modules, directly determines the safety, reliability and service life of the products. During the welding and assembly process, the semi-finished battery box may fail to seal due to process fluctuations (such as weld micropores, assembly gaps, etc.). If not discovered in time during the manufacturing process, it will cause serious safety hazards such as electrolyte leakage, internal short circuit and even explosion. Therefore, airtightness testing has become an indispensable key quality control link in the battery box production process.

[0003] After searching, the Chinese patent (publication number: CN115931262B) disclosed "a new energy battery box air tightness detection device, including a battery box, a working plate is provided on the top of the battery box, a silicone pad is provided on the bottom of the working plate, an air intake pipe is provided on one side of the top of the working plate, a one-way valve is provided on the upper part of the air intake pipe, a detection mechanism is provided on one side of the top of the working plate, a transmission assembly is provided on the side of the detection mechanism away from the air intake pipe, and the transmission assembly is connected to the detection mechanism, an indicator light, a pressure relief valve and a switch are provided on one side of the top of the working plate from left to right, and the indicator light is connected to the transmission assembly, the detection mechanism includes a detection cylinder, and the detection cylinder is located between the air intake pipe and the indicator light at the top of the working plate, a guide column is provided at the top of the detection cylinder, a positive electrode plate is connected to the bottom of the guide column, a spring is provided in the detection cylinder, and a set of springs is provided on the outside of the guide column, a push plate is provided inside the detection cylinder, and the push plate is fixedly connected to the lower end of the spring, and a negative electrode plate facing the positive electrode plate is provided on the top of the push plate. ".

[0004] However, in the process of implementing relevant technologies, this type of patent has certain technical defects:

[0005] First, after ventilating the battery box, this type of patent mainly determines whether the battery box is leaking by observing whether the scale values ​​corresponding to the push plate and the pointer are consistent. However, this detection method completely relies on the change of the pointer scale value, which is difficult to quantify the leakage amount, and the detection accuracy is low;

[0006] Second, when testing the battery box, the battery box needs to be pressed and sealed. Since the sizes of battery boxes are different, instant adjustments are required when testing battery boxes of different sizes. However, the existing battery box airtightness testing equipment cannot automatically adjust and position according to the size of the battery box, and has certain limitations. In view of this, the present invention proposes a new energy battery box semi-product airtightness testing equipment. Summary of the invention

[0007] The present invention provides a semi-product airtightness detection device for a new energy battery box, which solves the problem of large error in manual observation detection accuracy in the prior art.

[0008] The technical solution of the present invention is as follows: A new energy battery box semi-product airtightness detection equipment, comprising a main frame, the top of the main frame is slidably connected to a support platform, the inner side of the main frame is provided with a translation mechanism for driving the support platform to move in a horizontal direction, a top frame is provided above the main frame, the four corners of the bottom wall of the top frame are fixedly connected with connecting columns, the bottoms of the four connecting columns are fixedly connected to the main frame, the bottom of the top frame is provided with a positioning mechanism for positioning the battery box semi-product, and the inner side of the top frame is provided with an airtightness detection component for detecting the airtightness of the battery box semi-product.

[0009] Preferably, the translation mechanism includes a pushing cylinder, the pushing cylinder is fixedly connected to the bottom of the support platform, the output end of the pushing cylinder is fixedly connected to a movable seat, one end of the movable seat is fixedly connected to a connecting belt, and the end of the connecting belt away from the movable seat is fixedly connected to the main frame.

[0010] Preferably, the translation mechanism further comprises an extension frame, the extension frame is fixedly connected to one end of the main frame, both ends of the top of the extension frame are fixedly connected to guide rails, and both ends of the bottom of the movable seat are slidably connected to the two guide rails respectively.

[0011] Preferably, the side walls of the main frame are fixedly connected with sealing plates, and the sealing plates are transparent acrylic-aluminum alloy plates.

[0012] Preferably, a plurality of mounting seats are fixedly connected to the inner side of the main frame, and guide wheels are rotatably connected to the inner sides of the plurality of mounting seats, and the top ends of the plurality of guide wheels are in contact with the bottom wall of the movable seat.

[0013] Preferably, the positioning mechanism includes four first cylinders, which are respectively fixedly connected to the four corners of the support platform, and the output ends of the four first cylinders are fixedly connected to positioning sockets, and the bottom of the top frame is fixedly connected to a plurality of second cylinders distributed in an array, and the output ends of the plurality of second cylinders are fixedly connected to pressure plates, and fool-proof detection parts for detecting the direction of the semi-product of the battery box are arranged around the support platform, and a water collecting tray is arranged on the top of the support platform.

[0014] Preferably, the fool-proof detection component includes several fixing frames, and an equal number of the fixing frames are fixedly connected to the two ends of the support platform. The inner sides of several of the fixing frames are fixedly connected with a third cylinder, and the output ends of several of the third cylinders are fixedly connected with an adjustment block 1. The other two ends of the support platform are fixedly connected with a fourth cylinder, and the output ends of the two fourth cylinders are fixedly connected with an adjustment block 2.

[0015] Preferably, the contact surfaces of the pressing plate, adjusting block 1 and adjusting block 2 with the battery box semi-product are all provided with silicone or polyurethane sealing rings.

[0016] Preferably, the airtight detection assembly includes a pressure sensor arranged on the inner side of the battery box semi-product and an inflation device connected to the inflation port of the battery box semi-product.

[0017] Preferably, position detection sensors for detecting the position of the semi-product of the battery box are fixedly connected on all four sides of the support platform, a status sensor 1 for detecting the state of the first cylinder is fixedly connected to the outer side of the first cylinder, a status sensor 2 for detecting the state of the second cylinder is fixedly connected to the outer side of the second cylinder, a control panel is fixedly connected to the outer side of the top frame, the control panel includes a single-chip microcomputer, the position detection sensor, status sensor 1, status sensor 2, and pressure sensor are all connected to the single-chip microcomputer signal, a start-stop switch is fixedly connected to the outer side of one of the connecting columns, and the start-stop switch is electrically connected to the single-chip microcomputer.

[0018] The working principle and beneficial effects of the present invention are:

[0019] 1. The pressure sensor is used to monitor the changes in the air pressure inside the battery box in real time. The data is processed by the single-chip microcomputer to accurately calculate the leakage amount, which solves the problem of large errors in traditional manual visual judgment. The airtight detection component combines the inflation device and the pressure sensor to capture tiny air pressure fluctuations and improve detection sensitivity and reliability;

[0020] 2. Through the cooperation of the foolproof detection parts (third cylinder, fourth cylinder, adjustment block, etc.) and the position detection sensor, the position and direction of the battery box can be automatically corrected to meet the needs of products of different sizes. The multi-cylinder linkage design in the positioning mechanism (first cylinder, second cylinder, pressure plate, etc.) can seal the battery box horizontally, vertically and tightly without manual intervention to adjust the fixture;

[0021] 3. The control panel and the single-chip computer integrate signals such as position detection sensors and status sensors to realize fully automatic control of the detection process (transportation, positioning, sealing, inflation, judgment), improve efficiency, and prevent fool-proof detection parts and sensor networks (status sensors 1 and 2) to monitor the equipment status in real time to avoid operating errors or positioning deviations and ensure detection accuracy;

[0022] 4. The translation mechanism ensures the smooth movement of the support platform through the cooperation of guide rails, guide wheels and connecting belts, reducing the impact of vibration on detection. The transparent acrylic-aluminum alloy sealing plate combines protection and observation convenience; the water collection tray design prevents liquid spillage and improves operational safety;

[0023] 5. Silicone / polyurethane sealing rings are set on the contact surfaces of the pressure plate, adjustment block and battery box to ensure the effective sealing of the airtight cavity during the detection process, reduce the risk of misjudgment, integrate the entire process from product delivery to completion of detection, reduce manual handling and intervention, improve detection efficiency, and are suitable for assembly line operations. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] The present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0025] Figure 1 This is a schematic diagram of the structure of a semi-finished product airtightness detection device for a new energy battery box of the present invention. Figure 1 ;

[0026] Figure 2 This is a schematic diagram of the structure of a semi-finished product airtightness detection device for a new energy battery box of the present invention. Figure 2 ;

[0027] Figure 3 It is a structural schematic diagram of the translation mechanism of the present invention;

[0028] Figure 4 It is a schematic diagram of the local structure of the present invention;

[0029] Figure 5 It is a structural schematic diagram of the positioning mechanism of the present invention;

[0030] Figure 6 for Figure 5 A schematic diagram of the enlarged structure of part A;

[0031] Figure 7 It is a structural schematic diagram of the foolproof detection component of the present invention;

[0032] Figure 8 It is a system block diagram of the present invention.

[0033] In the figure: 1. main frame; 101. sealing plate; 102. mounting seat; 103. guide wheel; 2. extension frame; 3. top frame; 4. support table; 5. translation mechanism; 51. push cylinder; 52. movable seat; 53. connecting belt; 54. guide rail; 6. positioning mechanism; 61. first cylinder; 611. state sensor 1; 62. placement seat; 63. second cylinder; 631. state sensor 2; 64. pressure plate; 65. foolproof detection part; 651. fixing frame; 652. third cylinder; 653. adjustment block 1; 654. fourth cylinder; 655. adjustment block 2; 656. position detection sensor; 66. water collecting tray; 7. airtight detection component; 8. connecting column; 9. start-stop switch; 10. control panel. DETAILED DESCRIPTION

[0034] The following will be combined with the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0035] like Figures 1 to 8 As shown, this embodiment proposes an airtightness detection device for a semi-product of a new energy battery box, comprising a main frame 1, the top of the main frame 1 is slidably connected to a support platform 4, the inner side of the main frame 1 is provided with a translation mechanism 5 for driving the support platform 4 to move in a horizontal direction, a top frame 3 is provided above the main frame 1, the four corners of the bottom wall of the top frame 3 are fixedly connected with connecting columns 8, the bottoms of the four connecting columns 8 are fixedly connected to the main frame 1, the bottom of the top frame 3 is provided with a positioning mechanism 6 for positioning the semi-product of the battery box, and the inner side of the top frame 3 is provided with an airtightness detection component 7 for detecting the airtightness of the semi-product of the battery box.

[0036] During inspection, the battery box semi-product is placed on the top of the support table 4, and then the translation mechanism 5 drives the support table 4 to slide to the bottom of the main frame 1 to realize the transportation of the battery box semi-product, and then the positioning mechanism 6 is used to position and seal the battery box semi-product, and finally the airtightness of the battery box semi-product is tested by the airtightness detection component 7. The whole process realizes automated detection of the airtightness of the battery box semi-product, effectively improving the detection efficiency of the airtightness of the battery box semi-product.

[0037] Furthermore, the translation mechanism 5 includes a pushing cylinder 51, which is fixedly connected to the bottom of the support platform 4, and the output end of the pushing cylinder 51 is fixedly connected to a movable seat 52, one end of the movable seat 52 is fixedly connected to a connecting belt 53, the end of the connecting belt 53 away from the movable seat 52 is fixedly connected to the main frame 1, one end of the main frame 1 is fixedly connected to an extension frame 2, both ends of the top of the extension frame 2 are fixedly connected to guide rails 54, and the two ends of the bottom of the movable seat 52 are respectively slidably connected to the two guide rails 54.

[0038] When the semi-finished battery box is placed on the top of the support table 4, the movable seat 52 is moved by controlling the push cylinder 51, so that the connecting belt 53 connected to the movable seat 52 will apply a pulling force to the main frame 1, so that the support table 4 is subjected to the reverse pulling force and slides, so that the support table 4 transports the semi-finished battery box to the bottom of the main frame 1 for air tightness testing.

[0039] Furthermore, the side walls of the main frame 1 are fixedly connected with sealing plates 101, which are transparent acrylic-aluminum alloy plates. The sealing plates 101 can ensure that the equipment is not affected by foreign objects entering during operation. The transparent acrylic-aluminum alloy plate used for the sealing plates 101 not only has good strength, but also facilitates observation of the operation of the equipment.

[0040] Furthermore, a plurality of mounting seats 102 are fixedly connected to the inner side of the main frame 1, and guide wheels 103 are rotatably connected to the inner sides of the plurality of mounting seats 102, and the top ends of the plurality of guide wheels 103 are in contact with the bottom wall of the movable seat 52. The guide wheels 103 can not only play a guiding role, but also provide auxiliary support for the support platform 4 to ensure that the support platform 4 can translate stably.

[0041] Furthermore, the positioning mechanism 6 includes four first cylinders 61, which are respectively fixedly connected to the four corners of the support platform 4, and the output ends of the four first cylinders 61 are fixedly connected to the positioning card seat 62, and the bottom of the top frame 3 is fixedly connected to a plurality of second cylinders 63 distributed in an array, and the output ends of the plurality of second cylinders 63 are fixedly connected to a pressure plate 64, and the support platform 4 is provided with a foolproof detection member 65 for detecting the direction of the semi-product of the battery box, and the top of the support platform 4 is provided with a water collecting tray 66, and the foolproof detection member 65 includes a plurality of fixed A fixed frame 651 and an equal number of fixed frames 651 are fixedly connected to both ends of the support platform 4, the inner sides of the fixed frames 651 are fixedly connected with a third cylinder 652, the output ends of the third cylinders 652 are fixedly connected with an adjusting block 1 653, the other two ends of the support platform 4 are fixedly connected with a fourth cylinder 654, the output ends of the two fourth cylinders 654 are fixedly connected with an adjusting block 2 655, and the contact surfaces of the pressing plate 64, the adjusting block 1 653 and the adjusting block 2 655 with the battery box semi-product are all provided with silicone or polyurethane sealing rings.

[0042] By controlling the four first cylinders 61, the positioning seat 62 moves upward and supports the battery box semi-product, and then by controlling the third cylinder 652, the adjustment block 1 653 adjusts the position of the battery box semi-product laterally, and then controlling the fourth cylinder 654 to adjust the position of the battery box semi-product longitudinally. The position of the battery box semi-product is adjusted to a preset direction, and then all the second cylinders 63 drive the pressure plate 64 to contact the top surface of the battery box semi-product, so that the battery box semi-product is pressed and sealed, and finally the airtight detection component 7 is used to perform an airtight detection on it. The whole process can correctly adjust and position the position of battery box semi-products of different sizes, thereby realizing airtight detection of different battery box semi-products, and has strong versatility.

[0043] Furthermore, the airtight detection component 7 includes a pressure sensor (a conventional pressure sensor in the prior art, not marked in the figure) arranged on the inner side of the battery box semi-product and an inflation device (the prior art, not marked in the figure) connected to the inflation port of the battery box semi-product. Position detection sensors 656 for detecting the position of the battery box semi-product are fixedly connected on all four sides of the support platform 4. A state sensor 1 611 for detecting the state of the first cylinder 61 is fixedly connected to the outer side of the first cylinder 61. A state sensor 2 631 for detecting the state of the second cylinder 63 is fixedly connected to the outer side of the second cylinder 63. A control panel 10 is fixedly connected to the outer side of the top frame 3. The control panel 10 includes a single-chip microcomputer. The position detection sensor 656, state sensor 1 611, state sensor 2 631, and pressure sensor are all connected to the single-chip microcomputer signal. A start-stop switch 9 is fixedly connected to the outer side of one of the connecting columns 8. The start-stop switch 9 is electrically connected to the single-chip microcomputer.

[0044] Working principle: First, place the semi-finished battery box on the top of the support table 4, and control the push cylinder 51 to make the movable seat 52 move, so that the connecting belt 53 connected to the movable seat 52 will apply tension to the main frame 1, so that the support table 4 is subjected to reverse tension and slides, so that the support table 4 transports the semi-finished battery box to the bottom of the main frame 1. At this time, the position detection sensor 656 can detect the position of the semi-finished battery box and send a signal to the single-chip microcomputer. The single-chip microcomputer receives the signal and controls the third cylinder 652 to make the adjustment block 1 653 adjust the position of the semi-finished battery box laterally, and then controls the fourth cylinder 654 to make the adjustment block 2 655 adjust the position of the semi-finished battery box longitudinally , so that the position of the battery box semi-product is adjusted to a preset direction, and then all the second cylinders 63 drive the pressure plate 64 to contact the top surface of the battery box semi-product, so that the battery box semi-product is compressed and sealed, wherein the state sensor 1 611 and the state sensor 2 631 monitor the states of the first cylinder 61 and the second cylinder 63 in real time to ensure that the detection position of the battery box semi-product is determined, and then control the inflation device to inflate the battery box semi-product, and then monitor the air pressure change inside the battery box semi-product through the pressure sensor. If the air pressure inside the battery box semi-product decreases, it can be determined that the battery box semi-product is leaking, and the leakage amount is determined based on the change in pressure. The whole process has high sensitivity and high detection accuracy.

[0045] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A new energy battery box semi-product airtightness detection equipment, characterized in that: The invention comprises a main frame (1); A support platform (4) slidably connected to the top of the main frame (1); A translation mechanism (5) is arranged inside the main frame (1), and the translation mechanism (5) is used to drive the support platform (4) to move in a horizontal direction; A top frame (3) is arranged above the main frame (1), the four corners of the bottom wall of the top frame (3) are fixedly connected with connecting columns (8), and the bottoms of the four connecting columns (8) are fixedly connected to the main frame (1); A positioning mechanism (6) disposed at the bottom of the top frame (3), the positioning mechanism (6) being used to position the semi-finished battery box; An airtightness detection component (7) is arranged on the inner side of the top frame (3), and the airtightness detection component (7) is used to detect the airtightness of the semi-finished battery box.

2. A new energy battery box semi-product airtightness detection device according to claim 1, characterized in that: The translation mechanism (5) comprises a pushing cylinder (51), the pushing cylinder (51) is fixedly connected to the bottom of the support platform (4), the output end of the pushing cylinder (51) is fixedly connected to a movable seat (52), one end of the movable seat (52) is fixedly connected to a connecting belt (53), and the end of the connecting belt (53) away from the movable seat (52) is fixedly connected to the main frame (1).

3. A new energy battery box semi-product airtightness detection device according to claim 2, characterized in that: The translation mechanism (5) also includes an extension frame (2), the extension frame (2) is fixedly connected to one end of the main frame (1), both ends of the top of the extension frame (2) are fixedly connected to guide rails (54), and both ends of the bottom of the movable seat (52) are slidably connected to the two guide rails (54) respectively.

4. A new energy battery box semi-product airtightness detection device according to claim 1, characterized in that: The side walls of the main frame (1) are fixedly connected with sealing plates (101), and the sealing plates (101) are transparent acrylic-aluminum alloy plates.

5. The semi-finished product airtightness detection equipment of a new energy battery box according to claim 1 is characterized in that: A plurality of mounting seats (102) are fixedly connected to the inner side of the main frame (1), and guide wheels (103) are rotatably connected to the inner sides of the plurality of mounting seats (102), and the top ends of the plurality of guide wheels (103) are in contact with the bottom wall of the movable seat (52).

6. The semi-finished product airtightness detection equipment of a new energy battery box according to claim 1 is characterized in that: The positioning mechanism (6) comprises four first cylinders (61), the four first cylinders (61) are respectively fixedly connected to the four corners of the support platform (4), the output ends of the four first cylinders (61) are fixedly connected to the positioning base (62), the bottom of the top frame (3) is fixedly connected to a plurality of second cylinders (63) distributed in an array, the output ends of the plurality of second cylinders (63) are fixedly connected to a pressure plate (64), the support platform (4) is provided with foolproof detection parts (65) for detecting the direction of the semi-product of the battery box, and the top of the support platform (4) is provided with a water collecting tray (66).

7. A new energy battery box semi-product airtightness detection device according to claim 6, characterized in that: The foolproof detection component (65) includes a plurality of fixed frames (651), and a plurality of the fixed frames (651) are fixedly connected to the two ends of the support platform (4). The inner sides of the plurality of fixed frames (651) are fixedly connected to a third cylinder (652), and the output ends of the plurality of third cylinders (652) are fixedly connected to an adjustment block one (653). The other two ends of the support platform (4) are fixedly connected to a fourth cylinder (654), and the output ends of the two fourth cylinders (654) are fixedly connected to an adjustment block two (655).

8. The semi-finished product airtightness detection equipment of a new energy battery box according to claim 7 is characterized in that: The contact surfaces of the pressing plate (64), the first adjusting block (653) and the second adjusting block (655) with the battery box semi-product are all provided with silicone or polyurethane sealing rings.

9. A new energy battery box semi-product airtightness detection device according to claim 8, characterized in that: The airtightness detection component (7) comprises a pressure sensor arranged on the inner side of the battery box semi-product and an inflation device connected to the inflation port of the battery box semi-product.

10. A new energy battery box semi-product airtightness detection device according to claim 9, characterized in that: Position detection sensors (656) for detecting the position of a semi-finished battery box are fixedly connected to the four sides of the support platform (4); a state sensor 1 (611) for detecting the state of the first cylinder (61) is fixedly connected to the outer side of the first cylinder (61); a state sensor 2 (631) for detecting the state of the second cylinder (63) is fixedly connected to the outer side of the second cylinder (63); a control panel (10) is fixedly connected to the outer side of the top frame (3); the control panel (10) includes a single-chip microcomputer; the position detection sensor (656), the state sensor 1 (611), the state sensor 2 (631), and the pressure sensor are all connected to the single-chip microcomputer signal; a start-stop switch (9) is fixedly connected to the outer side of one of the connecting columns (8); and the start-stop switch (9) is electrically connected to the single-chip microcomputer.

Images