Battery airtightness testing device

Abstract

The utility model discloses a battery air tightness detection device, battery air tightness detection device, including base, the top of base is fixedly connected with detection box, and the inside bottom side of detection box is equipped with the sliding slot, and the sliding slot is slidably connected with the sliding block, and the front side of sliding block is fixedly connected with the placing plate, and the upper surface of placing plate is provided with the clamping assembly, and the front side top of detection box is hinged with the box door, and the left and right sides of detection box are provided with the limiting component for limiting the rotation of box door, and the rear side of base is provided with the gas supply component for the inflation, and the inside left and right sides of detection box are located above placing plate and are all rotatably connected with a plurality of rotating shafts, and the rotating shaft is fixedly connected with the vane, and the left and right sides of detection box are all fixedly connected with the helium detector. In the utility model, through being provided with detection box, placing plate, clamping plate, box door, helium bottle, conveying pipe, gas pump, connecting pipe, helium detector, rotating shaft, vane, fixing frame, transmission shaft, improve test efficiency and accuracy.

Description

Technical Field

[0001] This utility model relates to the technical field of battery airtightness testing devices, and in particular to battery airtightness testing devices. Background Technology

[0002] A storage battery is a device that converts chemical energy into electrical energy and is widely used in various fields. Battery airtightness testing is a crucial step in battery manufacturing and quality control, aiming to ensure the battery's sealing performance, prevent internal electrolyte leakage or external gas ingress, and thus guarantee the battery's safety and reliability. Traditional testing methods, such as the bubble method, while simple and easy to implement, suffer from low testing accuracy.

[0003] Chinese patent publication number CN221706854U discloses an airtightness testing device for battery processing, relating to the field of battery technology. The device includes a testing platform with support legs fixed at each of the four corners of its bottom. A through-groove is formed at the top of the testing platform, with support platforms fixed on both sides of the groove. A miniature air pump is fixed in the middle of the support platforms. Movable sleeves are movably mounted at both ends of the top of the testing platform, with ventilation holes through-formed on the outer wall of each sleeve. The top of the cover plate is rotatably connected to the outer wall of the movable sleeve via a hinge. The cover plate is made of foam, making it easier to move with the wind. Through the multiple ventilation holes and multiple cover plates, when the movable sleeve is closed, the movement of the cover plates can be used to determine whether airflow is generated inside the movable sleeve. This achieves the effect of performing airtightness testing without requiring subsequent battery processing, thus reducing testing costs.

[0004] Existing battery airtightness testing devices suffer from low accuracy and low testing efficiency due to reliance on visual inspection alone. To overcome these disadvantages, this invention provides a battery airtightness testing device. Utility Model Content

[0005] The purpose of this invention is to address the shortcomings of existing technologies by proposing a battery airtightness testing device.

[0006] To achieve the above objectives, this utility model adopts the following technical solution: a battery airtightness testing device, including a base, a testing box fixedly connected to the top of the base, a sliding groove opened on the bottom side of the testing box, a slider slidably connected in the sliding groove, a placement plate fixedly connected to the front side of the slider, clamping components symmetrically arranged on the upper surface of the placement plate, a door hinged to the top front side of the testing box, fixing bolts symmetrically arranged on the door, screw holes adapted to the fixing bolts opened on the front bottom of the testing box, and limiting components for restricting the rotation of the door symmetrically arranged on the left and right sides of the top of the testing box, the bottom... A gas supply assembly for inflation is provided on the rear side of the base. Several rotating shafts are rotatably connected to the left and right sides of the inside of the testing box above the placement plate. Blades are fixed on the rotating shafts. One end of each rotating shaft extends outside the testing box and is fixedly connected to a driven bevel gear. Fixing frames are fixed to the left and right sides of the testing box. A drive shaft is rotatably connected inside the fixing frame. A driving bevel gear is fixedly connected to the drive shaft at the position corresponding to the driven bevel gear. Each driving bevel gear meshes with the corresponding driven bevel gear. Helium detectors are fixedly connected to the left and right sides of the testing box. The air inlet of the helium detector extends into the inside of the testing box.

[0007] Furthermore, a screw is rotatably connected inside the slide groove, the slider is threadedly connected to the screw, and the front end of the screw extends out of the detection box and is fixedly connected to a knob.

[0008] Furthermore, the clamping assembly includes a fixing plate, which is fixedly connected to the placement plate. A first telescopic rod is fixedly connected to the opposite side of the fixing plate. A clamping plate is fixedly connected to the end of the first telescopic rod. A first return spring is sleeved on the outside of the first telescopic rod. The two ends of the first return spring are fixedly connected to the fixing plate and the clamping plate, respectively.

[0009] Furthermore, a sealing strip is fixedly connected to the inner periphery of the box door.

[0010] Furthermore, the gas supply assembly includes a helium cylinder and a gas pump fixedly connected to the detection box. A pressure regulator is fixedly connected to the output end of the helium cylinder, a flow controller is fixedly connected to the output end of the pressure regulator, a delivery pipe is fixedly connected to the output end of the flow controller, the other end of the delivery pipe is fixedly connected to the input end of the gas pump, and a connecting pipe is fixedly connected to the output end of the gas pump. The connecting pipe extends into the interior of the detection box and is a flexible hose.

[0011] Furthermore, a drive motor is fixedly connected to the rear side of the fixing frame, and the output end of the drive motor is fixedly connected to the transmission shaft.

[0012] Furthermore, the limiting component includes a stop bar, and a second telescopic rod is fixedly connected between the stop bar and the detection box. A second return spring is sleeved on the outer side of the second telescopic rod, and the two ends of the second return spring are fixedly connected to the detection box and the stop bar, respectively.

[0013] The beneficial effects of this utility model are:

[0014] When in use, this battery airtightness testing device has the following advantages:

[0015] 1. In this solution, a base, testing box, slide, slider, screw, knob, placement plate, fixing plate, first telescopic rod, clamp, first return spring, box door, fixing bolts, screw holes, sealing strip, helium cylinder, pressure regulator, flow controller, delivery pipe, air pump, connecting pipe, and helium detector are provided. The battery to be tested is placed on the placement plate, and the clamp clamps the battery on both sides for stability. The port of the connecting pipe is connected to the testing port of the battery through a threaded joint. Then, the knob is turned to drive the screw to rotate, thereby moving the slider, placement plate, and clamped battery into the testing box. Pulling the two side bars outward releases the box door. The box door and testing box are rotated downward to close, and the fixing bolts are screwed into the corresponding screw holes to fix the box door. The helium cylinder valve and air pump are opened, and helium is filled into the battery through the delivery pipe and connecting pipe. The helium detector detects whether there is helium leakage inside the box, thereby detecting the airtightness of the battery and improving the accuracy of the test.

[0016] 2. In this solution, a rotating shaft, blades, driven bevel gears, a fixed frame, a transmission shaft, and a driving bevel gear are installed. The drive motors on both sides drive the corresponding transmission shafts to rotate. The driven bevel gears mesh with the corresponding driving bevel gears, thereby driving several rotating shafts to rotate synchronously. The outer blades fan the air inside the detection chamber, accelerating the internal airflow and preventing helium leaks from being in the blind zone of the helium detector. This improves testing efficiency and accuracy. After the test, the chamber door is opened, and the blades fan the air to accelerate the dissipation of internal gas, making it convenient for the next test. Attached Figure Description

[0017] To more clearly illustrate the technical solution of this utility model, the drawings used in the description of the specific embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0018] Figure 1 : A schematic diagram of the overall structure of this utility model;

[0019] Figure 2 : Front view of this utility model;

[0020] Figure 3 : Bottom view of this utility model;

[0021] Figure 4 : A schematic diagram of the rear structure of this utility model;

[0022] Figure 5 The present utility model Figure 4 Enlarged view of point A in the middle;

[0023] Figure 6 : Schematic diagram of the limiting structure of this utility model.

[0024] The attached figures are labeled as follows:

[0025] 1. Base; 2. Detection box; 3. Slide groove; 4. Slider; 5. Screw; 6. Knob; 7. Placement plate; 8. Fixing plate; 9. First telescopic rod; 10. Clamping plate; 11. First return spring; 12. Box door; 13. Fixing bolt; 14. Screw hole; 15. Sealing strip; 16. Helium cylinder; 17. Pressure regulator; 18. Flow controller; 19. Delivery pipe; 20. Air pump; 21. Connecting pipe; 22. Rotating shaft; 23. Blade; 24. Driven bevel gear; 25. Fixing frame; 26. Transmission shaft; 27. Driving bevel gear; 28. Drive motor; 29. ​​Helium detector; 30. Stop bar; 31. Second telescopic rod; 32. Second return spring. Detailed Implementation

[0026] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of the present utility model.

[0027] like Figure 1-6As shown, the battery airtightness testing device includes a base 1, a testing box 2 fixedly connected to the top of the base 1, a sliding groove 3 on the bottom side of the inside of the testing box 2, a slider 4 slidably connected in the sliding groove 3, a placement plate 7 fixedly connected to the front side of the slider 4, clamping components symmetrically arranged on the upper surface of the placement plate 7, a door 12 hinged to the top front side of the testing box 2, fixing bolts 13 symmetrically arranged on the door 12, screw holes 14 adapted to the fixing bolts 13 on the front bottom of the testing box 2, limiting components for restricting the rotation of the door 12 symmetrically arranged on the left and right sides of the top of the testing box 2, and an air supply component for inflation arranged on the rear side of the base 1. Inside the test box 2, on both the left and right sides above the placement plate 7, several rotating shafts 22 are rotatably connected. Blades 23 are fixed to the rotating shafts 22. One end of each rotating shaft 22 extends outside the test box 2 and is fixedly connected to a driven bevel gear 24. Fixing frames 25 are fixed to both the left and right sides of the test box 2. A drive shaft 26 is rotatably connected inside the fixing frame 25. A driving bevel gear 27 is fixedly connected to the drive shaft 26 at the position corresponding to the driven bevel gear 24. The driving bevel gear 27 meshes with the corresponding driven bevel gear 24. Helium detectors 29 are fixedly connected to both the left and right sides of the test box 2. The inlet of the helium detector 29 extends into the interior of the test box 2.

[0028] like Figure 1-3 As shown, a screw 5 is rotatably connected inside the slide groove 3, and a slider 4 is threadedly connected to the screw 5. The front end of the screw 5 extends out of the test box 2 and is fixedly connected to a knob 6. Rotating the knob 6 causes the screw 5 to rotate, thereby causing the slider 4 to slide along the slide groove 3, moving the placement plate 7 and the clamped battery into or out of the test box 2.

[0029] like Figure 1 As shown, the clamping assembly includes a fixed plate 8, which is fixedly connected to a placement plate 7. A first telescopic rod 9 is fixedly connected to the opposite side of the fixed plate 8. A clamping plate 10 is fixedly connected to the end of the first telescopic rod 9. A first return spring 11 is sleeved on the outside of the first telescopic rod 9. The two ends of the first return spring 11 are fixedly connected to the fixed plate 8 and the clamping plate 10, respectively. When the clamping plates 10 on both sides are pulled outward, the first telescopic rod 9 and the first return spring 11 are compressed. The battery to be tested is placed on the placement plate 7. When the clamping plate 10 is released, the first telescopic rod 9 and the first return spring 11 return and extend, causing the clamping plate 10 to clamp the battery on both sides for fixation, thereby improving stability.

[0030] like Figure 1 As shown, a sealing strip 15 is fixedly connected to the inner periphery of the box door 12 to improve airtightness.

[0031] like Figure 1-4As shown, the gas supply assembly includes a helium cylinder 16 and an air pump 20 fixedly connected to the detection box 2. A pressure regulator 17 is fixedly connected to the output end of the helium cylinder 16, a flow controller 18 is fixedly connected to the output end of the pressure regulator 17, a delivery pipe 19 is fixedly connected to the output end of the flow controller 18, and the other end of the delivery pipe 19 is fixedly connected to the input end of the air pump 20. A connecting pipe 21 is fixedly connected to the output end of the air pump 20, and the connecting pipe 21 extends into the interior of the detection box 2. The connecting pipe 21 is a flexible hose. When the valve of the helium cylinder 16 and the air pump 20 are opened, helium is charged into the battery through the delivery pipe 19 and the connecting pipe 21. The helium detector 29 detects whether there is a helium leak inside the box.

[0032] like Figure 2-5 As shown, a drive motor 28 is fixedly connected to the rear side of the fixed frame 25. The output end of the drive motor 28 is fixedly connected to the transmission shaft 26. When the drive motors 28 on both sides are started, the corresponding transmission shafts 26 are driven to rotate. The driven bevel gear 24 meshes with the corresponding driving bevel gear 27, thereby driving several rotating shafts 22 to rotate synchronously. The outer blades 23 fan the air inside the detection box 2, accelerating the internal air flow and preventing helium leakage in a certain place from being in the blind zone of the helium detector 29, thus improving the testing efficiency and accuracy.

[0033] like Figure 6 As shown, the limiting component includes a stop bar 30. A second telescopic rod 31 is fixedly connected between the stop bar 30 and the detection box 2. A second return spring 32 is sleeved on the outside of the second telescopic rod 31. The two ends of the second return spring 32 are fixedly connected to the detection box 2 and the stop bar 30, respectively. When the box door 12 is rotated to the top, the stop bar 30 abuts against the inside of the box door 12 to limit the movement. Pulling the stop bars 30 on both sides outward can release the box door 12.

[0034] Working principle: In use, pull the clamping plates 10 on both sides outward, and the first telescopic rod 9 and the first return spring 11 will be compressed, placing the battery to be tested on the placement plate 7. Release the clamping plates 10, and the first telescopic rod 9 and the first return spring 11 will return and extend, causing the clamping plates 10 to clamp the battery on both sides for fixation, improving stability. Connect the port of the connecting pipe 21 to the test port of the battery through the threaded joint. Then turn the knob 6 to drive the screw 5 to rotate, thereby driving the slider 4 to slide along the slide groove 3, moving the placement plate 7 and the clamped battery into the test box 2. Pull the stop bars 30 on both sides outward to release the box door 12. Rotate the box door 12 downward to close it with the test box 2, and screw the fixing bolts 13 into the corresponding screw holes 14. With the fixed door 12, the valve of the helium cylinder 16 and the air pump 20 are opened, and helium is charged into the battery through the delivery pipe 19 and the connecting pipe 21. The helium detector 29 detects whether there is a helium leak inside the box, thereby checking the airtightness of the battery. The drive motors 28 on both sides are started, thereby driving the corresponding transmission shafts 26 to rotate. The driven bevel gear 24 and the corresponding driving bevel gear 27 mesh with each other, thereby driving several rotating shafts 22 to rotate synchronously. The outer blades 23 fan the air inside the detection box 2, accelerating the internal airflow and preventing helium leaks from being in the blind zone of the helium detector 29, thus improving the testing efficiency and accuracy. After the test is completed, the door 12 is opened, and the blades 23 fan the air to accelerate the dissipation of the internal gas, making it convenient for the next test.

[0035] The preferred embodiments of this utility model disclosed above are merely illustrative of the present utility model. These preferred embodiments do not exhaustively describe all details, nor do they limit the utility model to any specific implementation. Clearly, many modifications and variations can be made based on the content of this specification. This specification selects and specifically describes these embodiments to better explain the principles and practical applications of this utility model, thereby enabling those skilled in the art to better understand and utilize it. This utility model is limited only by the claims and their full scope and equivalents.

Claims

1. Apparatus for detecting the tightness of a battery, comprising a base (1), characterized in that: The top of the base (1) is fixedly connected with a detection box (2), the inner bottom side of the detection box (2) is provided with a sliding groove (3), the sliding groove (3) is slidably connected with a sliding block (4), the front side of the sliding block (4) is fixedly connected with a placing plate (7), the upper surface of the placing plate (7) is symmetrically provided with a clamping assembly, the front top of the detection box (2) is hingedly connected with a box door (12), the box door (12) is symmetrically provided with a fixed bolt (13), the bottom front side of the detection box (2) is provided with a threaded hole (14) matched with the fixed bolt (13), the top of the detection box (2) is symmetrically provided with a limiting assembly for limiting the rotation of the box door (12), the rear side of the base (1) is provided with a gas supply assembly for inflating, the inside of the detection box (2) is rotatably connected with a plurality of rotating shafts (22) above the placing plate (7), the rotating shafts (22) are fixedly connected with blades (23), one end of the rotating shaft (22) extends to the outside of the detection box (2) and is fixedly connected with a driven bevel gear (24), the left and right sides of the detection box (2) are fixedly connected with a fixed frame (25), the fixed frame (25) is rotatably connected with a transmission shaft (26), the transmission shaft (26) is fixedly connected with a driving bevel gear (27) at a position corresponding to the driven bevel gear (24), the driving bevel gear (27) is meshed with the corresponding driven bevel gear (24), the left and right sides of the detection box (2) are fixedly connected with a helium detector (29), the gas inlet of the helium detector (29) extends into the detection box (2).

2. The battery gas tightness detection apparatus according to claim 1, characterized by: The sliding groove (3) is rotatably connected with a screw rod (5), the sliding block (4) is threadedly connected with the screw rod (5), the front end of the screw rod (5) extends to the outside of the detection box (2) and is fixedly connected with a knob (6).

3. The battery gas tightness detection apparatus according to claim 1, characterized by: The clamping assembly comprises a fixed plate (8), the fixed plate (8) is fixedly connected with the placing plate (7), the opposite side of the fixed plate (8) is fixedly connected with a first telescopic rod (9), the end of the first telescopic rod (9) is fixedly connected with a clamping plate (10), the outer side of the first telescopic rod (9) is sleeved with a first reset spring (11), the two ends of the first reset spring (11) are fixedly connected with the fixed plate (8) and the clamping plate (10) respectively.

4. The apparatus of claim 1 wherein: The inner side of the box door (12) is fixedly connected with a sealing strip (15).

5. The apparatus of claim 1 wherein: The gas supply assembly comprises a helium cylinder (16) and a gas pump (20) fixedly connected to the detection box (2), the output end of the helium cylinder (16) is fixedly connected with a pressure regulator (17), the output end of the pressure regulator (17) is fixedly connected with a flow controller (18), the output end of the flow controller (18) is fixedly connected with a conveying pipe (19), the other end of the conveying pipe (19) is fixedly connected with the input end of the gas pump (20), the output end of the gas pump (20) is fixedly connected with a connecting pipe (21), the connecting pipe (21) extends into the inside of the detection box (2), and the connecting pipe (21) is a flexible pipe.

6. The apparatus of claim 1 wherein: The rear side of the fixing frame (25) is fixedly connected with a driving motor (28), and the output end of the driving motor (28) is fixedly connected with a transmission shaft (26).

7. The apparatus of claim 1 wherein: The limiting assembly comprises a blocking rod (30), a second telescopic rod (31) is fixedly connected between the blocking rod (30) and the detection box (2), a second reset spring (32) is arranged on the outer side of the second telescopic rod (31), and the two ends of the second reset spring (32) are fixedly connected with the detection box (2) and the blocking rod (30) respectively.

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