Self-cleaning battery pack airtightness testing device

Abstract

The utility model discloses a self-cleaning battery pack airtightness testing device. The piston device is used for driving the testing head. The testing head is at least provided with a first surface and a second surface and at least comprises an airtight plug and a belt, the belt drives the airtight plug to reciprocate between the first surface and the second surface, and the piston device drives the position change of the testing head in the testing process. The piston device drives the test head to stretch out and draw back, the belt drives the airtight plug to reciprocate, the two are matched to efficiently complete the test process, meanwhile, different from a traditional test mode using a single airtight plug, and the service life of the airtight plug can be effectively prolonged by alternately using the airtight plug.

Description

Technical Field

[0001] This utility model relates to the field of battery sealing testing, and in particular to a self-cleaning battery pack airtightness testing device. Background Technology

[0002] The existing technical solution proposes an airtightness testing device for vehicle-mounted modules, mainly comprising a fixture, a drive mechanism, a support, and a connecting mechanism. The fixture consists of a first template and a second template, forming a sealed space to test the airtightness of the vehicle-mounted module. The drive mechanism is connected to the first template via the connecting mechanism, enabling precise alignment of the templates. The support supports the second template and allows for quick replacement via a detachable connection. The device design emphasizes compatibility and efficiency, allowing for rapid fixture replacement to meet the testing needs of different modules, while a control mechanism ensures operational safety. The overall structure aims to improve testing efficiency and accuracy, ensuring the waterproof and dustproof performance of the vehicle-mounted module.

[0003] In traditional testing, the sealing rings and gaskets on airtight plugs may accumulate dust particles during repeated use. Over time, this buildup can cause impurities to build up on the plugs, affecting the accuracy of test results. These impurities can also cause physical corrosion, reducing the lifespan of the airtight plugs. Therefore, timely cleaning and maintenance of airtight plugs is crucial. Utility Model Content

[0004] Purpose of the invention: The purpose of this utility model is to provide a self-cleaning battery pack airtightness testing device that effectively extends service life while ensuring the sealing effect of the test.

[0005] To achieve the above-mentioned objectives, the self-cleaning battery pack airtightness testing device of this invention adopts the following technical solution:

[0006] A self-cleaning battery pack airtightness testing device includes a test head, a battery bracket, an air pump, a piston device, a first bracket, a second bracket, and a base. The first bracket is vertically mounted on the base, and the piston device is mounted on the first bracket. The piston device includes a plunger, which is fixedly connected to the test head. The test head has at least a first surface and a second surface. The test head is provided with at least one airtight plug that can move between the first surface and the second surface. A working distance is provided between the cleaning device and the second surface, where the airtight plug scrapes against the cleaning device when it moves to the second surface.

[0007] By adopting the above technical solution, the device can evenly distribute a certain number of test tasks to a certain number of airtight plugs, and clean the airtight plugs in a timely manner after each individual test process, which significantly improves the service life of the airtight plugs.

[0008] Furthermore, the test head includes several drive rollers and a conveyor belt, the conveyor belt having a first side and a second side, and the airtight plug being disposed on the conveyor belt.

[0009] By adopting the above technical solution, the airtight plug can be efficiently switched between the first and second surfaces, thereby improving testing efficiency.

[0010] Preferably, the length of the belt in the first running direction is less than the length in the second running direction. In the side view, the belt is a trapezoid with the first surface as the upper base and the second surface as the lower base. When a complete test process is completed, the airtight plug can effectively avoid scratching or colliding with objects including but not limited to devices, batteries, etc., when it rotates out of the first surface or into the first surface from other surfaces. This can provide better protection for the top of the airtight plug.

[0011] Furthermore, the test head includes a guide rail, which has mounting grooves that mate with the plurality of drive rollers.

[0012] Preferably, a retaining edge is provided at the inner edge of the belt to further strengthen the connection between the guide rail and the belt and prevent the belt from derailing during operation.

[0013] Furthermore, the airtight plug includes a sealing plug and an inflation head, the inflation head having an inflation channel.

[0014] Furthermore, a support column is provided between the guide rails, and an air pipe is provided inside the support column. The support column has an air hole on the end face of the first side. The air hole is connected to the air pump through the air pipe, and the air hole corresponds to the bottom of the inflation channel of the inflation head.

[0015] Furthermore, the top of the inflation head is fitted with a hollow sleeve, which is an inverted frustum, and the sleeve has an air outlet that mates with the inflation channel.

[0016] By adopting the above technical solution, when the inflation head contacts the inflation port of the battery under test, the top surface of the inverted truncated cone and the structure are in contact with the contact surface of the battery inflation port, which improves the sealing effect during inflation. At the same time, the contact surface between the side wall of the inverted truncated cone and the inner side wall of the inflation port of the battery under test is small, which avoids friction between the inflation head and the battery.

[0017] Furthermore, the free end of the plunger is provided with a cleaning device that cooperates with the test head.

[0018] By adopting the above technical solution, the test head is installed on the top of the free end of the plug, the cleaning device is installed on the outer wall of the plug near the test head, and the cleaning device can scrape the surface of the sealing plug when it moves to the second side.

[0019] Furthermore, the cleaning device includes a brush and a base, wherein the distance between the second surface and the base is less than the sum of the heights of the airtight plug and the brush bristles.

[0020] By adopting the above technical solution, the cleaning device can achieve a good cleaning effect on the surface of the sealing plug.

[0021] Preferably, the bristles are covered with non-woven fabric, which can further improve the cleaning effect and at the same time prevent the bristles from scratching the surface of the airtight plug, thus reducing the sealing effect during the test.

[0022] Furthermore, the brush includes bristles extending along the direction of movement of the conveyor belt.

[0023] Furthermore, the first bracket is provided with an adjustment mechanism for adjusting the working angle of the piston device.

[0024] By adopting the above technical solution, a test process can be completed cyclically by adjusting the angle between the test head and the horizontal plane using a cylinder, thus ensuring the working efficiency of the device.

[0025] In summary, this application has at least one of the following beneficial effects:

[0026] 1. The test head is equipped with multiple pairs of airtight plugs, which are driven by a belt to circulate between the first and second sealing surfaces. After each test, the airtight plugs automatically move to a new sealing surface. Combined with a cleaning device, this effectively avoids fatigue deformation of the airtight plugs caused by repeated use of the same sealing surface. This design significantly extends the service life of the airtight plugs, reduces maintenance costs and downtime, and ensures the long-term stability and accuracy of test results.

[0027] 2. The test head is trapezoidal in the side view direction, which can effectively prevent the test head from bumping into the environment when cycling between the first and second sides.

[0028] The cleaning device promptly removes dust and dirt from the airtight plug after each test, preventing a decline in sealing performance due to dust accumulation. This continuous cleaning mechanism reduces the need for manual cleaning, simplifies the maintenance process, lowers maintenance costs, and improves equipment operating efficiency. Attached Figure Description

[0029] Figure 1 This is a three-dimensional drawing of the present invention;

[0030] Figure 2 This is a side view of the present invention;

[0031] Figure 3 This is a front view of the present invention;

[0032] Figure 4 This is a top view of the present invention;

[0033] Figure 5 This is the left view of the present invention;

[0034] Figure 6 This is a three-dimensional view of point A in this utility model;

[0035] Figure 7 This is a cross-sectional view at point A of the present invention;

[0036] Figure 8 This is a right view of part A of this utility model.

[0037] 1 Test head; 11 Airtight plug; 111 Sealing plug; 112 Inflatable plug; 113 Sleeve; 12 Air pipe; 13 First surface; 14 Second surface; 15 Belt; 16 Roller; 17 Guide rail; 18 Column; 19 Cavity;

[0038] 2. Cleaning device; 21. Brush; 22. Base;

[0039] 3. Battery holder;

[0040] 4. Piston assembly; 41. Sleeve; 42. Piston plunger; 43. Adjusting mechanism;

[0041] 5. First support;

[0042] 6. Second support;

[0043] 7. Base. Detailed Implementation

[0044] To make the technical solution of this utility model clearer, the present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0045] In the description of this utility model, unless otherwise explicitly specified and limited, the terms "connected," "linked," and "fixed" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances. Example

[0046] like Figure 1As shown, this application provides a self-cleaning battery pack airtightness testing device, including a test head 1, a cleaning device 2, a battery bracket 3, an air pump, a piston device 4, a first bracket 5, a second bracket 6, and a base 7. The first bracket 5 is vertically arranged on the base 7. The piston device 4 is arranged on the top of the first bracket 5 and can change angle with the first bracket 5. The piston device 4 includes a sleeve 41 and a plunger 42. The test head 1 is installed on the free end of the plunger 42. The test head 1 has at least two different first surfaces 13 and second surfaces 14. At least one airtight plug 11 that can cyclically displace between the first surface 13 and the second surface 14 is provided on the outer side of the test head 1. An airtight plug 11 includes a sealing plug 111 and an inflation head 112. The cleaning device 2 is installed on the outer side wall of the plunger 42 near the free end in cooperation with the test head 1. The cleaning device 2 is distributed along the movement direction of the airtight plug 11.

[0047] See further Figure 1 It should be noted that the test head 1 and the plunger 42 will not have relative displacement, so the connection method can be either a fixed connection or a detachable connection.

[0048] exist Figure 1 Based on this, see Figure 2 In the right view, an interactive panel is mounted on the first bracket 5.

[0049] like Figure 1 , Figure 3 As shown, the second bracket 6 is vertically mounted on the base 7, and the battery bracket 3 is mounted on top of the second bracket 6. The battery bracket 3 corresponds to the test head 1, and the battery is placed on the battery bracket 3 when testing is required.

[0050] like Figure 1-3 As shown, in a separate testing procedure, the battery is placed on the battery holder 3, and the piston device 4 is changed from a horizontal angle to a testing angle directly facing the battery holder 3. After the airtight plug 11 on the test head 1 is driven to the testing position on the first surface 13, the piston device 4 drives the plunger 42 to move the test head 1 into the test port of the battery under test for airtightness testing. After the test is completed, the plunger 42 retracts, and at the same time, the airtight plug 11 is driven to the cleaning position on the second surface 14. The tip of the airtight plug 11 scrapes against the surface of the brush 21 in the cleaning device 2 on the second surface 14 to achieve a cleaning effect.

[0051] like Figure 4 , Figure 5 As shown, in the side view direction, the test head 1 is provided with a mounting hole for the air tube 12. The air tube 12 is installed inside the test head 1 through the mounting hole and is connected to the bottom of the inflation head 112 in the working state.

[0052] like Figure 1 , Figure 5As shown, it should be noted that the installation method of the fixing parts of the test head 1 and the piston device 4 and the installation method of the air tube 12 should provide a detachable path for the belt 15 of the test head 1. For example, threaded holes should be opened on the side of the column 18 of the test head 1 and the plunger 42 of the piston device 4 near the interactive panel, and the two ends of the fixing parts should be fixed to the outer walls of the column 18 and the plunger 42 respectively by bolts.

[0053] like Figure 6 As shown, a column 18 is set in the middle of the test head 1. The two end faces of the column 18 correspond to the first face 13 and the second face 14 respectively. A guide rail 17 is set on the end face of the column 18. Rollers 16 are set at both ends of the guide rail 17. A belt 15 is tensioned and sleeved on the roller 16. The belt 15 has replaceable installation positions, which can facilitate the replacement of different types of plugs. The inner side of the belt 15 is provided with a groove that cooperates with the roller 16. Since the belt 15 is tensioned and sleeved on the roller 16, it applies positive pressure to the roller. Therefore, there is friction between the belt 15 and the roller 16. When the roller 16 rotates along its own axis, it drives the belt 15 to rotate. At the same time, the groove on the inner side of the belt 15 cooperates with the roller 16 to prevent the belt 15 from derailing during operation. This helps to improve the stability of the airtight plug 11 running along the belt 15 between the first face 13 and the second face 14.

[0054] See further Figure 6 The column 18 has an air hole on the end face of the first surface 13, and the position of the air hole corresponds to the air pipe 12 of the airtight plug 11 in the working state.

[0055] See further Figure 6 The length of the first guide rail 17 (13) is shorter than the length of the second guide rail 17 (14), which helps to prevent the airtight plug 11 from rubbing against parts of the device other than the cleaning device 2 when the first and second guide rails 13 and 14 reciprocate.

[0056] like Figure 7 As shown, the test head 1 has a cavity 19 inside, and an air tube 12 is installed inside the cavity 19. The air tube 12 is connected to an air hole. When the battery needs to be inflated during the test, the air tube 12 passes through the air hole to the inflation channel of the inflation head 112 and inflates the battery.

[0057] like Figure 8 As shown, the connection between the test head 1 and the free end of the plunger 42 can be either fixed or detachable, ensuring the strength of the connection. It should be noted that the installation method of the air tube 12 needs to allow for a path to replace the conveyor belt; for example, the air tube 12 can be detachably connected to the test head 1, or the air tube 12 can be installed between the test head 1 and the first support 5.

[0058] Combination Figure 1 , 8When a single test begins, the battery is transferred to the battery holder 3 with the test port facing the test head 1. The working program of the test head 1 is started on the interactive panel. The roller 16 on the test head 1 drives the belt 15 to move the airtight plug 11 from the first surface 13 to the first surface 13. The sleeve 41 of the piston device and the adjustment mechanism 43 change the angle of the test head 1 so that it is in a straight line with the battery under test. Then, the plug 42 of the piston device 4 inserts the airtight plug 11 into the test port of the battery under test. During the airtight test, the air tube 12 passes through the air hole to the inflation channel of the inflation head 112 to inflate the battery. After the airtight test is completed, the piston device 4 first retracts the plug 42 and removes the battery from the battery holder 3. At the same time, the used airtight plug 11 is driven from the first surface 13 to the second surface 14 by the roller 16 and the belt 15. The airtight plug 11 scrapes against the surface of the brush 21 on the second surface 14 to achieve a cleaning effect. Thus, a single test process is completed. Example

[0059] In Example 1, the positional relationship between the battery holder 3 and the test head 1 will change, wherein the first holder 5 and the second holder 6 are fixed, and the piston device 4 adjusts the angle and distance to achieve this.

[0060] This embodiment provides an implementation method based on the adjustment of the relative position of the test head 1 and the battery bracket 3 in Embodiment 1: the piston device 4 is fixed, a height adjustment device is set between the piston device 4 and the first bracket 5, and the second bracket 6 is fixed; or the piston device 4 is set at a specific angle, the piston device 4 is fixed on the first bracket 5, the first bracket 5 is fixed on the base 7, and the second bracket 6 can adjust the battery bracket 3 and the angle to match the test head 1.

[0061] This embodiment provides only an alternative implementation of the first support 5, the second support 6 and the piston device 4 working together. Other technical means and working methods are based on the preferred implementation of embodiment 1 or other optional methods. Example

[0062] In Example 1, the test head 1 is installed at the free end of the plug 42 and will not be displaced relative to the plug 42.

[0063] This embodiment provides an installation method for the test head 1 and the plug 42 based on Embodiment 1: threaded holes are opened on the side of the test head 1 and the free end of the plug 42, and at least two bolts are inserted into the steel plate and tightened to the threaded holes on the test head 1 and the plug 42 respectively.

[0064] This embodiment only provides an alternative implementation of the connection method between the test head 1 and the free end of the plug 42. Other technical means and working methods are based on the preferred implementation method of embodiment 1 or other optional methods.

[0065] The embodiments described above are merely illustrative of several implementations of the present invention, and while the descriptions are specific and detailed, they should not be construed as limiting the scope of the present invention. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of the present invention, and these modifications and improvements all fall within the scope of protection of the present invention. Therefore, the scope of protection of this patent should be determined by the appended claims.

Claims

1. A self-cleaning battery pack air tightness testing device, characterized in that: The utility model relates to a test head, battery support, air pump, piston device, first support, second support and base, the first support is vertically arranged on the base, the piston device is arranged on the first support, the piston device includes the plug post, the plug post is fixedly connected with the test head, the test head has at least first surface and second surface, the test head is provided with at least one airtight plug that can move between the first surface and second surface, cleaning device and the second surface are equipped with the working distance of the scraping of the cleaning device when the airtight plug moves to the second surface.

2. The self-cleaning battery package air tightness testing device of claim 1, wherein: The test head includes a plurality of drive rollers, guide rails, and a conveying belt. The guide rails are provided with mounting grooves that cooperate with the plurality of drive rollers. The conveying belt is provided with a first surface and a second surface. The airtight plug is arranged on the conveying belt.

3. The self-cleaning battery package air tightness testing device of claim 2, wherein: The airtight plug includes a sealing plug and an inflation head. The inflation head has an inflation channel.

4. The self-cleaning battery package air tightness testing device of claim 3, wherein: Supporting columns are arranged between the guide rails. The supporting columns are internally provided with air tubes. The supporting columns have air holes on the end surface of the first surface. The air holes are connected with the air pump through the air tubes. The air holes correspond to the bottom of the inflation channel of the inflation head.

5. The self-cleaning battery package air tightness testing device of claim 3, wherein: A hollow sleeve is arranged on the top of the inflation head. The sleeve is a rounded table. The sleeve has air outlet holes that cooperate with the top of the inflation channel.

6. The self-cleaning battery package air tightness testing device of claim 1, wherein: The free end of the plug post is provided with a cleaning device that cooperates with the test head.

7. The self-cleaning battery package air tightness testing device of claim 6, wherein: The cleaning device includes a brush and a base. The distance between the second surface and the base is less than the sum of the height of the airtight plug and the height of the bristles.

8. The self-cleaning battery package air tightness testing device of claim 7, wherein: The brush includes bristles that extend along the direction of movement of the conveying belt.

9. The self-cleaning battery package air tightness testing device of claim 1, wherein: An adjusting mechanism is arranged on the first support to adjust the working angle of the piston device.

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