A new energy automobile battery pack portable detection device

Abstract

This utility model relates to the field of new energy vehicle technology and discloses a portable testing device for new energy vehicle battery packs. The top of the support platform has symmetrically arranged sliding grooves on both sides. A driving rod is slidably connected to the inner side of each sliding groove, and a clamping corner block is fixedly connected to the top of the driving rod. A pressure plate is fixedly installed at the middle of one side of the top surface of the support platform. During the pre-testing positioning process of the battery pack, the threaded rod and driving block can move the driving rod. The sliding groove restricts the position of the driving rod, allowing the clamping corner blocks on the two driving rods to move synchronously towards or away from the pressure plate. By moving the clamping corner blocks towards the pressure plate, the position of the battery pack placed on the support platform is compressed and restricted, ensuring the stability of the battery pack during the actual airtightness test and preventing it from shaking under air pressure, which would affect the accuracy of the actual test results.

Description

Technical Field

[0001] This utility model relates to the field of new energy vehicle technology, specifically a portable testing device for new energy vehicle battery packs. Background Technology

[0002] With the increasing international energy shortage, worsening air pollution, and growing awareness of low-carbon and environmental protection, energy conservation and environmental protection have become increasingly important. In the automotive industry, more and more car companies are focusing on new energy vehicles. The broad prospects of the new energy vehicle industry have driven the rapid development of the new energy vehicle battery industry. Currently, the battery pack of new energy vehicles is a core component, and it is necessary to test the battery pack during the maintenance and repair of new energy vehicles. As a core component of the whole vehicle, the airtightness of the new energy vehicle battery pack is directly related to the safety, service life and overall vehicle performance of the battery system. If the sealing is not good, moisture and dust may enter, causing problems such as electrolyte leakage and internal short circuits, and even inducing safety accidents. Therefore, airtightness testing has become an indispensable key link in the maintenance and repair process of new energy vehicles. Through strict testing, the stable operation of the battery pack in complex environments can be effectively guaranteed.

[0003] In the actual testing process, current battery pack testing equipment requires fixing the battery pack during airtightness testing. However, traditional fixing methods are complicated and the stability of the battery pack cannot be effectively guaranteed after fixing. As a result, the battery pack is prone to unstable air pressure due to positional movement during airtightness testing, which affects the accuracy of the actual airtightness test results. Summary of the Invention

[0004] To address the shortcomings of existing technologies, this utility model provides a portable testing device for new energy vehicle battery packs. It solves the problem that current battery pack testing equipment requires fixing the battery pack during airtightness testing. Traditional fixing methods are complex and the stability of the battery pack cannot be effectively guaranteed after fixing. As a result, the battery pack is prone to unstable air pressure due to positional movement during airtightness testing, which affects the accuracy of the actual airtightness test results.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a portable testing device for new energy vehicle battery packs, comprising a testing box and a sealing cover, wherein the top of the testing box is sealed with the sealing cover, and mounting boxes are installed on both sides of the testing box, wherein a booster pump is embedded in the mounting box on one side of the testing box, and a vacuum pump is embedded in the mounting box on the other side of the testing box, and a digital display panel is embedded in the front side of the testing box;

[0006] A support platform is fixedly installed on the inner bottom surface of the detection box. The top two sides of the support platform are provided with symmetrical sliding grooves. A driving rod is slidably connected to the inner side of the sliding groove. A clamping corner block is fixedly connected to the top of the driving rod. A pressure plate is fixedly installed at the middle position of one side edge of the top surface of the support platform.

[0007] The end of the driving rod away from the clamping corner block is fixedly connected to the edge of the driving block at the inner side of the support platform. The driving block slides along the inner center of the support platform and is limited by a threaded rod. A threaded rod is connected to the inside of the driving block by a thread. A sealing shaft seat is provided at the connection position between the threaded rod and the edge of the detection box. A drive motor is fixedly installed at the end of the threaded rod. The top surface of the support platform is uniformly provided with overhead bars.

[0008] As a preferred technical solution of the portable testing equipment for new energy vehicle battery packs of this utility model, the booster pump and the vacuum pump are respectively connected to the inside of the testing chamber through pipelines, and one-way valves are installed on the end pipelines of the booster pump and the vacuum pump. The digital display panel displays the air pressure inside the testing chamber.

[0009] As a preferred technical solution of the portable testing equipment for new energy vehicle battery packs of this utility model, a high-density rubber pad is provided on the inclined surface of the clamping corner block and the contact surface of the pressure plate. The clamping corner block is a right-angled triangular block, and the bottom of the clamping corner block slides along the top surface of the support platform through a sliding block.

[0010] As a preferred technical solution of the portable testing equipment for new energy vehicle battery packs of this utility model, a limiting groove is provided in the middle of the inner side of the support platform, the driving block slides along the limiting groove, the driving rod is L-shaped, and the driving block drives the driving rod and the clamping corner block to slide.

[0011] As a preferred technical solution of the portable testing equipment for new energy vehicle battery packs of this utility model, a sealing ring seat is provided at the top edge of the testing box, a compression sealing airbag is embedded and connected to the inner side of the sealing ring seat, a fitting seat is connected to the bottom end of the sealing cover, and an air pump is fixedly installed on the back of the testing box, and the air pump's air delivery end is connected to the compression sealing airbag through an air pipe.

[0012] The bottom edge of the fitting seat is provided with a fitting groove, and the top of the detection box is provided with a sealing strip corresponding to the fitting groove. Both sides of the sealing cover are locked and limited to the sealing ring seat by locking bolts.

[0013] As a preferred technical solution of the portable testing equipment for new energy vehicle battery packs of this utility model, the air pump delivers pressurized gas to the squeeze sealing airbag through the air pipe. After the fitting seat is fully inserted into the sealing ring seat, the squeeze sealing airbag and the edge of the fitting seat are in close contact.

[0014] As a preferred technical solution of the portable testing equipment for new energy vehicle battery packs of this utility model, after the sealing cover and the mating seat are fully covered and connected to the top of the testing box, the sealing strip is tightly embedded in the mating groove.

[0015] Compared with the prior art, this utility model provides a portable testing device for new energy vehicle battery packs, which has the following advantages:

[0016] 1. By setting a sliding groove, driving rod, clamping corner blocks, pressure plate, driving block, threaded rod, sealing shaft seat and driving motor on the support platform, the threaded rod and driving block can drive the driving rod to move during the limiting process before the battery pack is tested. The sliding groove restricts the position of the driving rod, so that the clamping corner blocks on the two driving rods can move synchronously closer to or away from the pressure plate. By moving the clamping corner blocks closer to the pressure plate, the position of the battery pack placed on the support platform is squeezed and limited, so as to achieve rapid and stable limiting of the battery pack, ensure the stability of the battery pack in the actual airtightness test process, and avoid the shaking under air pressure that would affect the accuracy of the actual test results.

[0017] Furthermore, when the clamping corner block moves, the clamping cavity formed between it and the pressure plate can be adaptively adjusted according to the actual size and specifications of the battery pack. This facilitates stable restriction of battery packs of different sizes and specifications, ensuring the adaptability of the limit. The overhead bar can provide overhead support for the bottom of the battery pack to prevent blind spots in the detection of the bottom of the battery pack, making it easier to conduct more comprehensive airtightness testing of the battery pack.

[0018] 2. By testing the sealing ring seat set on the top of the test chamber, the mating seat at the bottom of the sealing cover can be inserted into the sealing ring seat when the sealing cover is closed. At the same time, the air pump is started, and gas is delivered to the compression sealing airbag through the air pipe. The expansion of the compression sealing airbag fills the gap between it and the mating seat, thereby ensuring the sealing cover's airtightness after it is closed. In addition, combined with the mating groove, sealing strip, and locking bolt, the sealing strip is compressed and deformed in the mating groove when the sealing cover is connected, thereby further improving the sealing performance of the sealing cover connection and further ensuring the overall airtightness of the test chamber. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the structure of this utility model.

[0020] Figure 2This is a schematic diagram of the air pump structure of this utility model.

[0021] Figure 3 This is a structural schematic diagram of the support platform of this utility model.

[0022] Figure 4 This is a schematic diagram of the structure of the corner block clamping device of this utility model.

[0023] Figure 5 This is a schematic diagram of the structure of the drive block of this utility model.

[0024] Figure 6 This is a schematic diagram of the structure of the extrusion sealing airbag of this utility model.

[0025] In the diagram: 1. Testing chamber; 2. Sealing cover; 3. Mounting box; 4. Booster pump; 5. Vacuum pump; 6. Digital display panel; 7. Support platform; 8. Sliding groove; 9. Drive rod; 10. Clamping corner block; 11. Pressure plate; 12. Drive block; 13. Threaded rod; 14. Sealing shaft seat; 15. Drive motor; 16. Overhead bar; 17. Sealing ring seat; 18. Compression sealing airbag; 19. Fitting seat; 20. Air pipe; 21. Air pump; 22. Fitting pressure groove; 23. Sealing strip; 24. Locking bolt. Detailed Implementation

[0026] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. However, it should be understood that the specific embodiments described herein are merely illustrative of the present utility model and are not intended to limit its scope. Furthermore, descriptions of well-known structures and technologies are omitted in the following description to avoid unnecessarily obscuring the concept of the present utility model.

[0027] In the description of this utility model, it should be noted that when an element is referred to as being "fixed to" or "set on" another element, it can be directly on or indirectly on the other element. When an element is referred to as being "connected to" another element, it can be directly connected to or indirectly connected to the other element.

[0028] In the description of this utility model, it should be noted that the terms "center," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the product is in use. They are used only for the convenience of describing the invention and for simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the invention. Furthermore, the terms "first," "second," and "third," etc., are used only to distinguish descriptions and should not be construed as indicating or implying relative importance. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, "a plurality of" means two or more, unless otherwise explicitly specified. "Several" means one or more, unless otherwise explicitly specified.

[0029] In the description of this utility model, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set," "install," "connect," and "link" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; 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; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0030] Example: Please refer to Figure 1-6 This utility model provides the following technical solution: a portable testing device for new energy vehicle battery packs, including a testing box 1 and a sealing cover 2. The top of the testing box 1 is sealed with the sealing cover 2. The testing box 1 is equipped with mounting boxes 3 on both sides. A booster pump 4 is embedded in the mounting box 3 on one side of the testing box 1, and a vacuum pump 5 is embedded in the mounting box 3 on the other side of the testing box 1. A digital display panel 6 is embedded in the front side of the testing box 1. The booster pump 4 and the vacuum pump 5 are respectively connected to the inside of the testing box 1 through pipes. A one-way valve is installed on the end pipes of the booster pump 4 and the vacuum pump 5. The digital display panel 6 displays the air pressure inside the testing box 1, which is convenient for testing the air tightness of the battery pack. The digital display panel 6 can conveniently and intuitively display the air pressure value inside the testing box 1.

[0031] A support platform 7 is fixedly installed on the inner bottom surface of the test box 1. The top two sides of the support platform 7 are provided with symmetrically arranged sliding grooves 8. The inner side of the sliding groove 8 is slidably connected to a driving rod 9. The top of the driving rod 9 is fixedly connected to a clamping corner block 10. A pressure plate 11 is fixedly installed at the middle position of one side edge of the top surface of the support platform 7. A high-density rubber pad is provided on the inclined surface of the clamping corner block 10 and the contact surface of the pressure plate 11. The right-angled triangular block of the clamping corner block 10 and the bottom of the clamping corner block 10 slide along the top surface of the support platform 7 through the sliding block. The clamping corner block 10 moves towards the pressure plate 11 to squeeze and restrict the position of the battery pack placed on the support platform 7.

[0032] The end of the driving rod 9 away from the clamping corner block 10 is fixedly connected to the edge of the driving block 12 at the inner side of the support platform 7. The driving block 12 slides along the inner middle of the support platform 7 and is connected to the threaded rod 13 by a thread. The inner middle of the support platform 7 is provided with a limit groove. The driving block 12 slides along the limit groove. The driving rod 9 is L-shaped and the driving block 12 drives the driving rod 9 and the clamping corner block 10 to slide, so that the threaded rod 13 can drive the driving block 12 to move. The driving rod 9 is moved by the driving block 12. A sealing shaft seat 14 is provided at the connection position between the threaded rod 13 and the edge of the detection box 1. The end of the threaded rod 13 is fixedly installed with a drive motor 15. The top surface of the support platform 7 is evenly provided with overhead bars 16.

[0033] A sealing ring seat 17 is provided at the top edge of the test chamber 1. A compression sealing airbag 18 is embedded and connected to the inner side of the sealing ring seat 17. A fitting seat 19 is connected to the bottom end of the sealing cover 2. An air pump 21 is fixedly installed on the back of the test chamber 1. The air supply end of the air pump 21 is connected to the compression sealing airbag 18 through an air pipe 20. The air pump 21 delivers pressurized gas to the compression sealing airbag 18 through the air pipe 20. After the fitting seat 19 is fully inserted into the sealing ring seat 17, the compression sealing airbag 18 and the edge of the fitting seat 19 are in close contact. Gas is delivered to the compression sealing airbag 18 through the air pipe 20. The expansion of the compression sealing airbag 18 fills the gap between it and the fitting seat 19, thereby ensuring the sealing performance of the sealing cover 2 after it is closed.

[0034] The bottom edge of the mating seat 19 is provided with a mating groove 22. The top of the test box 1 is provided with a sealing strip 23 corresponding to the mating groove 22. After the sealing cover 2 and the mating seat 19 are completely covered and connected to the top of the test box 1, the sealing strip 23 is tightly embedded in the mating groove 22. The sealing strip 23 is squeezed and deformed in the mating groove 22 to improve the sealing performance of the sealing cover 2 and ensure the overall airtightness of the test box 1. Both sides of the sealing cover 2 are locked and limited to the sealing ring seat 17 by locking bolts 24.

[0035] The working principle and usage process of this utility model are as follows: During the airtightness test of the new energy battery pack, the sealing cover 2 is opened first, the battery pack is placed into the test box 1, and one side of the battery pack is made to contact the pressure plate 11. At the same time, the bottom of the battery pack is placed on the overhead strip 16 on the bottom surface of the support platform 7. The overhead strip 16 is used to support the bottom of the battery pack to prevent the bottom of the battery pack from having a blind spot for testing, so as to facilitate a more comprehensive airtightness test of the battery pack.

[0036] Next, the battery pack needs to be fixed in a limiting position. During the limiting process before the battery pack is tested, the drive motor 15 drives the threaded rod 13 to rotate. The sealing shaft seat 14 ensures the sealing of the threaded rod 13 connection. The rotation of the threaded rod 13 drives the drive block 12 to move. The drive block 12 then drives the drive rod 9 to move. The sliding groove 8 restricts the position of the drive rod 9 so that the clamping corner blocks 10 on the two drive rods 9 can move synchronously towards or away from the pressure plate 11.

[0037] During clamping, the clamping corner block 10 moves towards the pressure plate 11 to squeeze and restrict the position of the battery pack placed on the support platform 7, thereby achieving rapid and stable positioning of the battery pack, ensuring its stability, and preventing it from shaking under air pressure, which would affect the accuracy of the test results. Furthermore, when the clamping corner block 10 moves to clamp, the clamping cavity formed between the clamping corner block 10 and the pressure plate 11 can be adaptively adjusted according to the actual size and specifications of the battery pack, thus facilitating stable restriction of battery packs of different sizes and specifications, and ensuring the adaptability of the positioning.

[0038] After the battery pack position is restricted, the sealing cover 2 is connected to the top of the test chamber 1. Through the sealing ring seat 17 on the top of the test chamber 1, the mating seat 19 at the bottom of the sealing cover 2 can be inserted into the sealing ring seat 17 when the sealing cover 2 is connected. At this time, the air pump 21 is started, and gas is delivered to the compression sealing airbag 18 through the air pipe 20. The expansion of the compression sealing airbag 18 fills the gap between it and the mating seat 19, ensuring the sealing performance of the sealing cover 2 after it is connected. At the same time, combined with the mating groove 22, the sealing strip 23 and the locking bolt 24, the compression deformation of the sealing strip 23 in the mating groove 22 when the sealing cover 2 is connected further improves the sealing performance of the sealing cover 2 connection, ensuring the overall airtightness of the test chamber 1.

[0039] During actual testing, the booster pump 4 is started to increase the internal pressure of the testing chamber 1. After pressurizing to the specified time, the booster pump 4 stops working, and the pressure value on the digital display panel 6 is recorded. The pressure value on the digital display panel 6 is observed to see if it decreases. If the pressure value decreases, it indicates that gas has entered the new energy vehicle battery pack, proving that there is a problem with the airtightness of the battery pack. Conversely, the airtightness of the new energy vehicle battery pack is qualified. In addition, after testing, the new energy vehicle battery pack is removed from the testing chamber 1, and the vacuum pump 5 is started. The pressure value inside the testing chamber 1 is observed through the digital display panel 6 until the vacuum pump 5 evacuates the inside of the testing chamber 1. If the pressure value on the digital display panel 6 does not change, it indicates that the airtightness of the testing chamber 1 is qualified. This verifies the test results and ensures the accuracy of the new energy vehicle battery pack test.

[0040] Finally, it should be noted that the above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A portable testing device for new energy vehicle battery packs, comprising a testing housing (1) and a sealing cover (2), characterized in that: The top of the detection box (1) is sealed with a sealing cover (2). Both sides of the detection box (1) are equipped with mounting boxes (3). A booster pump (4) is embedded in the mounting box (3) on one side of the detection box (1), and a vacuum pump (5) is embedded in the mounting box (3) on the other side of the detection box (1). A digital display panel (6) is embedded in the front side of the detection box (1). A support platform (7) is fixedly installed on the inner bottom surface of the detection box (1). A sliding groove (8) is symmetrically arranged on both sides of the top of the support platform (7). A driving rod (9) is slidably connected to the inner side of the sliding groove (8). A clamping corner block (10) is fixedly connected to the top of the driving rod (9). A pressure plate (11) is fixedly installed at the middle position of one side edge of the top surface of the support platform (7). The end of the driving rod (9) away from the clamping corner block (10) is fixedly connected to the edge of the driving block (12) at the inner side of the support platform (7). The driving block (12) slides along the inner middle of the support platform (7) and is connected to a threaded rod (13) by a thread. A sealing shaft seat (14) is provided at the connection position between the threaded rod (13) and the edge of the detection box (1). A drive motor (15) is fixedly installed at the end of the threaded rod (13). The top surface of the support platform (7) is uniformly provided with overhead bars (16).

2. The portable testing device for new energy vehicle battery packs according to claim 1, characterized in that: The booster pump (4) and vacuum pump (5) are connected to the inside of the test chamber (1) through pipes respectively. One-way valves are installed on the pipes at the ends of the booster pump (4) and vacuum pump (5). The digital display panel (6) displays the air pressure inside the test chamber (1).

3. The portable testing device for new energy vehicle battery packs according to claim 1, characterized in that: High-density rubber pads are provided on the inclined surface of the clamping corner block (10) and the contact surface of the pressure plate (11). The clamping corner block (10) is a right-angled triangular block, and the bottom of the clamping corner block (10) slides along the top surface of the support platform (7) through a sliding block.

4. The portable testing device for new energy vehicle battery packs according to claim 3, characterized in that: The support platform (7) has a limiting groove in the middle of its inner side. The drive block (12) slides along the limiting groove. The drive rod (9) is L-shaped, and the drive block (12) drives the drive rod (9) and the clamping corner block (10) to slide.

5. A portable testing device for new energy vehicle battery packs according to claim 1, characterized in that: The top edge of the detection box (1) is provided with a sealing ring seat (17), and a squeeze sealing airbag (18) is embedded and connected to the inner side of the sealing ring seat (17). The bottom end of the sealing cover (2) is connected with a fitting seat (19). An air pump (21) is fixedly installed on the back of the detection box (1), and the air supply end of the air pump (21) is connected to the squeeze sealing airbag (18) through an air pipe (20). The bottom edge of the fitting seat (19) is provided with a fitting groove (22), and the top of the detection box (1) is provided with a sealing strip (23) corresponding to the fitting groove (22). Both sides of the sealing cover (2) are locked and limited to the sealing ring seat (17) by locking bolts (24).

6. A portable testing device for new energy vehicle battery packs according to claim 5, characterized in that: The air pump (21) delivers pressurized gas through the air pipe (20) into the squeeze sealing airbag (18). After the fitting seat (19) is fully inserted into the sealing ring seat (17), the squeeze sealing airbag (18) and the edge of the fitting seat (19) are in close contact.

7. A portable testing device for new energy vehicle battery packs according to claim 5, characterized in that: After the sealing cover (2) and the mating seat (19) are fully covered and connected to the top of the detection box (1), the sealing strip (23) is tightly embedded in the mating groove (22).

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