A battery airtightness detection device

Abstract

The application discloses a kind of battery airtightness detection device, it is related to battery detection device technical field.The present application includes the sealed box of top opening, and cooperate with the sealing cover of being set on sealed box;The inner top side of sealing cover is provided with the support structure of placing battery;Support structure includes a U-shaped frame, support plate is set between the opposite two inner side walls of U-shaped frame, and both ends of support plate are rotatably installed on U-shaped frame by a rotating shaft;The top of sealing cover is provided with the air pressure detection mechanism of detecting the air pressure in sealed box after sealing cooperation of sealing cover and sealed box.The present application is provided with the drive system of driving sealing cover to move up and down, is placed on support structure by mechanical hand or belt etc when using, then control battery is placed into the air pressure detection after being stationary for a period of time in sealed box.

Description

Technical Field

[0001] This invention belongs to the technical field of battery testing devices, and in particular relates to a battery airtightness testing device. Background Technology

[0002] The battery airtightness tester is used to test the sealing degree of automotive battery case covers and shells after heat sealing or adhesive bonding. This machine has the characteristics of good testing stability, and using this product can greatly improve production efficiency and product qualification rate.

[0003] For example, CN217930731U discloses a rapid detection structure for battery air tightness, belonging to the field of battery testing. It includes a positive pressure pipeline and a negative pressure pipeline. A positive pressure pipeline test gauge is installed on the positive pressure pipeline, and a negative pressure pipeline test gauge is installed on the negative pressure pipeline. It also includes a drive cylinder, a test cylinder, and a double-headed piston. The double-headed piston includes a drive piston head located in the drive cylinder and a test piston head located in the test cylinder. In the test cylinder, the two sides of the test piston head are a positive pressure chamber and a negative pressure chamber, respectively. During use, the battery under test is exposed to the outside air, which will cause the air pressure measurement of the pressure gauge to be unstable, affecting the accuracy of the battery air tightness detection. Summary of the Invention

[0004] The purpose of this invention is to provide a battery airtightness testing device. By setting a drive system that drives the sealing cover to move up and down, the battery is placed on the support structure by means of a robotic arm or belt, etc., and then the battery is placed inside the sealed box and left to stand for a period of time before air pressure testing is performed, thus solving the problems mentioned in the prior art.

[0005] To solve the above-mentioned technical problems, the present invention is achieved through the following technical solution:

[0006] This invention relates to a battery airtightness testing device, comprising a sealed housing with a top opening and a sealing cover fitted onto the sealed housing; a support structure for placing the battery is provided on the inner top side of the sealing cover; the support structure includes a U-shaped frame, and a support plate is provided between the two opposite inner side walls of the U-shaped frame, with both ends of the support plate rotatably mounted on the U-shaped frame via a pivot; a pressure detection mechanism is provided on the top of the sealing cover to detect the air pressure inside the sealed housing after the sealing cover and the sealed housing are sealed together.

[0007] As a preferred embodiment of the present invention, it further includes a testing platform, the upper surface of which is connected to a top plate via a support column, and the top plate is provided with a drive system that is connected to the sealing cover and drives the sealing cover to move up and down; the sealing box is installed on the upper surface of the testing platform.

[0008] As a preferred embodiment of the present invention, one end of the U-shaped frame is provided with a plurality of spaced-apart stops; in its natural state, the support plate is inclined toward one side of the stops.

[0009] As a preferred embodiment of the present invention, the drive system includes a cylinder unit, the output end of which passes through a top plate and is connected to the top of a sealing cover; linear bearings are provided through the top plate on both sides of the cylinder unit, and guide rods are fitted on the linear bearings, the bottom ends of which are connected to the upper surface of the sealing cover; it also includes a control unit connected to the cylinder unit and controlling the extension and retraction of the cylinder unit, and the control unit is also connected to a detection unit for detecting the operation of the battery; the operation of the battery includes placing and removing it; the detection unit includes two grooves provided on the two edges of the upper surface of the support plate, and a brightness sensor is installed in each of the two grooves.

[0010] As a preferred embodiment of the present invention, the method for determining the operation of the storage battery is as follows:

[0011] When the two brightness sensors collect a normal brightness value of X1, and the brightness sensor on the side furthest from the lever detects a decrease in brightness value first, it is determined that the battery is being inserted. When both brightness sensors detect a brightness value much smaller than X1 at the same time, it is determined that the battery insertion operation is complete.

[0012] When the two brightness sensors collect a normal brightness value of X2, and the brightness sensor closest to the lever detects an increase in brightness value first, it is determined that the battery is being inserted. When both brightness sensors simultaneously detect a brightness value much greater than X1, it is determined that the battery removal operation is complete.

[0013] As a preferred embodiment of the present invention, the control unit is also connected to a three-color lamp and a pressure balance valve disposed on the sealing cover.

[0014] As a preferred embodiment of the present invention, the bottom ends of the U-shaped frame are respectively provided with openings at both front ends, and the two ends of the support plate are respectively provided with protruding plates extending into the openings; a top rod is provided on the opening and extends into the opening; the sealing cover and the U-shaped frame are provided with through holes that seal with the top rod.

[0015] As a preferred embodiment of the present invention, the detection method includes:

[0016] Stp1: Place the gas-filled battery onto the support plate. Once the battery is against the lever, the placement operation is completed by the detection unit.

[0017] Stp2, the control cylinder unit extends, driving the support plate containing the battery to be placed into the sealed box, and the sealing cover and the sealed box are sealed together.

[0018] Stp3: The air pressure inside the sealed enclosure is measured as P1 by an air pressure detection mechanism. After a duration of T, the air pressure becomes P0. The air tightness of the battery is determined based on the relationship between P1 and P0.

[0019] As a preferred technical solution of the present invention, in the Stp1, the normal brightness is collected by two brightness sensors as X1. At this time, the cylinder unit is controlled to retract the length of L1 until the push rod hits the convex plate. At this time, the front edge of the support plate abuts against the U-shaped frame.

[0020] When the brightness sensor on the side furthest from the gear lever first detects a decrease in brightness, the control cylinder unit extends by a length of L1 and continues to push along the upper surface of the support plate until both brightness sensors simultaneously detect brightness values ​​that are much smaller than X1.

[0021] As a preferred technical solution of the present invention, after Stp3, after the determination, the cylinder unit extends L2 length in Stp2. At this time, the cylinder unit is first controlled to retract L2 length. When the image detection mechanism detects that an operator is performing a battery removal operation, the cylinder unit is controlled to retract L1 length again, and the push rod presses against the convex plate to control the support plate to tilt outward.

[0022] The present invention has the following beneficial effects:

[0023] 1. This invention, by setting up a drive system that drives the sealing cover to move up and down, enables the battery to be placed on the support structure by means of a robotic arm or belt during use, and then the battery is controlled to be placed inside the sealed box and left to stand for a period of time before the air pressure is tested, thus solving the problems mentioned in the prior art.

[0024] 2. The present invention provides a series of intermittently spaced stop bars at one end of the U-shaped frame. In its natural state, the support plate is tilted toward one side of the stop bars. After the battery is placed, the support plate tilts toward one side of the stop bars, and together with the stop bars, it can conveniently block the battery placed on the support plate, thus preventing the battery from slipping or tilting due to shaking during the up-and-down movement of the U-shaped frame.

[0025] Of course, any product implementing this invention does not necessarily need to achieve all of the advantages described above at the same time. Attached Figure Description

[0026] To more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0027] Figure 1 This is a schematic diagram of the airtightness testing device of the present invention;

[0028] Figure 2 for Figure 1 Enlarged view of a portion of point A in the middle;

[0029] Figure 3 for Figure 1 The main view. Detailed Implementation

[0030] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0031] In the description of this invention, it should be understood that the terms "opening", "upper", "lower", "thickness", "top", "middle", "length", "inner", "around", etc., which indicate orientation or positional relationship, are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the components or elements referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as limiting this invention.

[0032] Please see Figure 1-3 As shown, the present invention is a battery airtightness testing device. In use, the battery is placed inside the support structure provided on the top side of the sealing cover 2 for placing the battery. Then, the sealing cover 2 is closed inside the sealed box 1 with an opening at the top. The airtightness of the battery is determined by detecting the change in air pressure in the sealed box 1 over a period of time.

[0033] In the present invention, the bracket structure includes a U-shaped frame 20 provided on the inner top surface of the sealing cover 2. At the same time, a pressure detection mechanism 100, a three-color lamp, and a pressure balance valve are provided on the top of the sealing cover 2. In the above situation, when the sealing cover 2 is closed onto the sealed box body 1, first open the pressure balance valve and then close it. Then, the internal pressure of the sealed box body 1 is detected by the pressure detection mechanism 100 at this time and after 3 hours. When it is determined that the storage battery is qualified, the three-color lamp displays a green light. When it is determined that the storage battery is unqualified, the three-color lamp displays a red light. At the same time, during the detection process, the three-color lamp displays a yellow light.

[0034] Based on the above, in the present invention, in order to facilitate the control of the sealing cover 2 to be fitted and installed onto the sealed box body 1, the sealed box body 1 in the present invention is installed on the upper surface of a detection platform 3, and the upper surface of the detection platform 3 is further connected with a top plate 32 through a support column 31. A driving system for connecting with the sealing cover 2 and driving the sealing cover 2 to move up and down is provided on the top plate 32. The driving system includes a cylinder unit 33 and linear bearings 34 provided on the top plate 32 on both sides of the cylinder unit 33. The output end of the cylinder unit 33 penetrates through the top plate 32 and is connected to the top of the sealing cover 2. A guide rod 35 whose bottom end is connected to the upper surface of the sealing cover 2 is cooperatively provided on the linear bearing 34.

[0035] It can be understood that when the upper surface of the U-shaped frame 20 for placing the storage battery is a horizontal plane, during the process of controlling the up and down movement of the U-shaped frame 20, it is easy to cause the situation that the storage battery slides, tilts or even slides due to shaking. Based on this, in the present invention, a support plate 21 for placing the storage battery is rotatably installed on the opposite inner side walls of the U-shaped frame 20. Both ends of the support plate 21 are rotatably installed on the U-shaped frame 20 through a rotating shaft. And in the present invention, a number of blocking rods 201 with gaps are provided at one end of the U-shaped frame 20. In the natural state, the support plate 21 tilts towards the side of the blocking rod 201. After placing the storage battery, the support plate 21 tilts towards the side of the blocking rod 201, and in cooperation with the blocking rod 201, it is convenient to block the storage battery placed on the support plate 21, avoiding the situation that the storage battery slides, tilts or even slides due to shaking during the process of controlling the up and down movement of the U-shaped frame 20.

[0036] It can be understood that in order to better facilitate the operation of taking and placing the storage battery, a detection unit connected to the control unit and used for detecting the operation actions of the storage battery is provided on the support plate 21. The operation actions of the storage battery include placing and taking out. The detection unit includes two grooves 211 provided on the two edge sides of the upper surface of the support plate 21, and a brightness sensor is respectively installed in the two grooves 211.

[0037] Determination method for the operation actions of the storage battery:

[0038] When the two brightness sensors collect a normal brightness value of X1, the brightness sensor on the side away from the lever 201 will detect the decrease in brightness value first. At this time, it is determined that the battery is being inserted. When both brightness sensors detect a brightness value much smaller than X1 at the same time, it is determined that the battery insertion operation is complete.

[0039] When the two brightness sensors collect a normal brightness value of X2, the brightness sensor closest to the lever 201 will detect an increase in brightness value first, indicating that the battery is being inserted. When both brightness sensors detect a brightness value much greater than X1 at the same time, it is determined that the battery removal operation has been completed.

[0040] like Figure 2 The bottom two front ends of the U-shaped frame 20 are respectively provided with openings 202, and the two ends of the support plate 21 are respectively provided with protruding plates 212 that extend into the openings 202; a top rod 23 is provided on the openings 202 and extends into the openings 202; the sealing cover 2 and the U-shaped frame 20 are provided with through holes that seal with the top rod 23.

[0041] As a preferred embodiment of the present invention, the detection method includes:

[0042] Stp1: Place the gas-filled battery onto the support plate 21. Once the battery is against the lever 201, the placement operation is completed by the detection unit.

[0043] Stp2, the control cylinder unit 33 extends, driving the support plate 21 containing the battery to be placed into the sealed housing 1 as a whole, and the sealing cover 2 and the sealed housing 1 are sealed together.

[0044] Stp3, the air pressure inside the sealed enclosure 1 is detected by the air pressure detection mechanism 100. The air pressure is P1 at this time. After a time T, the air pressure is P0. The air tightness of the battery is determined according to the relationship between P1 and P0.

[0045] As a preferred technical solution of the present invention, in Stp1, the normal brightness is collected by two brightness sensors as X1. At this time, the cylinder unit 33 is controlled to retract the length L1 until the top rod 23 abuts against the convex plate 212. At this time, the front edge of the support plate 21 abuts against the U-shaped frame 20.

[0046] When the brightness sensor on the side furthest from the lever 201 first detects a decrease in brightness, the control cylinder unit 33 extends by a length of L1 and continues to push along the upper surface of the support plate 21 until both brightness sensors simultaneously detect brightness values ​​that are much smaller than X1.

[0047] As a preferred technical solution of the present invention, after Stp3, after the determination, in Stp2, the cylinder unit 33 extends by a length of L2. At this time, the cylinder unit 33 is first controlled to retract by a length of L2. At this time, when the image detection mechanism detects that an operator is performing a battery removal operation, the cylinder unit 33 is controlled to retract by a length of L1. Then the push rod 23 presses against the convex plate 212 to control the support plate 21 to tilt outward.

[0048] In the description of this specification, references to terms such as "an embodiment," "example," "specific example," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the invention. In this specification, illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0049] The preferred embodiments of the present invention disclosed above are merely illustrative of the invention. These preferred embodiments do not exhaustively describe all details, nor do they limit the invention 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 the invention, thereby enabling those skilled in the art to better understand and utilize the invention. The invention is limited only by the claims and their full scope and equivalents.

Claims

1. A battery airtightness testing device, characterized in that: Includes a sealed box (1) with a top opening, and a sealing cover (2) that fits onto the sealed box (1). It also includes a testing platform (3), the upper surface of which is connected to a top plate (32) via a support column (31). The top plate (32) is provided with a drive system that is connected to the sealing cover (2) and drives the sealing cover (2) to move up and down. The inner top side of the sealing cover (2) is provided with a support structure for placing the storage battery; The top of the sealing cover (2) is provided with a pressure detection mechanism (100) for detecting the air pressure inside the sealing box (1) after the sealing cover (2) and the sealing box (1) are sealed together. The support structure includes a U-shaped frame (20), and a support plate (21) is provided between the two opposite inner side walls of the U-shaped frame (20). Both ends of the support plate (21) are rotatably mounted on the U-shaped frame (20) through a rotating shaft. The sealing box (1) is installed on the upper surface of the detection platform (3); a number of gap-set baffles (201) are provided at one end of the U-shaped frame (20); in the natural state, the support plate (21) is tilted to one side of the baffles (201).

2. The battery airtightness testing device according to claim 1, characterized in that, The drive system includes a cylinder unit (33), the output end of which passes through the top plate (32) and is connected to the top of the sealing cover (2); A through linear bearing (34) is provided on the top plate (32) on both sides of the cylinder unit (33), and a guide rod (35) is provided on the linear bearing (34), with the bottom end of the guide rod (35) connected to the upper surface of the sealing cover (2); It also includes a control unit connected to the cylinder unit (33) and controlling the extension and retraction of the cylinder unit (33), the control unit being connected to a detection unit for detecting the operation of the battery; The battery operation includes placing and removing the battery. The detection unit includes two grooves (211) disposed on the two edges of the upper surface of the support plate (21), and a brightness sensor is installed in each of the two grooves (211).

3. The battery airtightness testing device according to claim 2, characterized in that, The method for determining the operation of the storage battery: When the two brightness sensors collect the normal brightness value as X1, the brightness sensor on the side away from the lever (201) will detect the decrease in brightness value first. At this time, it is determined that the battery is being put in. When the two brightness sensors detect the brightness value at the same time as X1, it is determined that the battery placement operation is completed. When the two brightness sensors collect a normal brightness value of X2, the brightness sensor on the side closer to the lever (201) will detect an increase in brightness value first. At this time, it is determined that the battery is being inserted. When both brightness sensors detect a brightness value much greater than X1 at the same time, it is determined that the battery removal operation is complete.

4. The battery airtightness testing device according to claim 3, characterized in that, The control unit is also connected to a three-color lamp and a pressure balance valve installed on the sealing cover (2).

5. A battery airtightness testing device according to claim 3, characterized in that, The bottom two front ends of the U-shaped frame (20) are respectively provided with openings (202), and the two ends of the support plate (21) are respectively provided with protruding plates (212) that extend into the openings (202); a top rod (23) is provided on the opening (202) and extends into the opening (202); the sealing cover (2) and the U-shaped frame (20) are provided with through holes that seal with the top rod (23).

6. The battery airtightness testing device according to claim 5, characterized in that, The detection methods include: Stp1, Place the gas-filled battery onto the support plate (21), and wait until the battery touches the lever (201). At this time, the detection unit determines that the placement operation is complete. Stp2, the control cylinder unit (33) extends, driving the support plate (21) containing the battery to be placed into the sealed box (1) as a whole, and the sealing cover (2) and the sealed box (1) are sealed together. Stp3, the air pressure inside the sealed box (1) is P1 at this time by the air pressure detection mechanism (100), and after a time of T, the air pressure is P0; the air tightness of the battery is determined according to the relationship between P1 and P0.

7. A battery airtightness testing device according to claim 6, characterized in that, In the Stp1, the normal brightness is X1 collected by two brightness sensors. At this time, the control cylinder unit (33) retracts the length of L1 until the top rod (23) presses against the convex plate (212). At this time, the front edge of the support plate (21) abuts against the U-shaped frame (20). When a brightness sensor on the side furthest from the lever (201) first detects a decrease in brightness value, the control cylinder unit (33) extends by a length of L1 and then continues to push along the upper surface of the support plate (21) until both brightness sensors detect that the brightness value is much smaller than X1.

8. A battery airtightness testing device according to claim 6, characterized in that, After Stp3, after the determination, in Stp2, the cylinder unit (33) extends L2 length. At this time, the cylinder unit (33) is first controlled to retract L2 length. At this time, when the image detection mechanism detects that an operator is performing a battery removal operation, the cylinder unit (33) is controlled to retract L1 length again. Then the push rod (23) presses against the convex plate (212) to control the support plate (21) to tilt outward.

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