A new energy automobile battery upper cover airtightness detection device

Abstract

The utility model relates to detection technical field and disclose a novel airtightness detection device of new energy automobile battery upper cover, including operation platform, the upper portion of operation platform is provided with upper frame, install a plurality of down -the-line cylinder on the upper frame, the output of down -the-line cylinder passes through upper frame and is connected with down -the -line frame, be provided with the sealing ring that battery upper cover shape matches on operation platform, be provided with mounting hole on the sealing ring, be provided with a plurality of fixed battery upper cover edge's pressure mechanism on operation platform, the position and quantity of pressure mechanism and mounting hole correspond. The utility model mainly improves the stability of tooling test, shortens test cycle simultaneously.

Description

Technical Field

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

[0002] With the continuous increase in car ownership, energy shortages and environmental pollution have become more prominent, leading to the vigorous promotion of new energy electric vehicles. The battery pack, as the power source of new energy electric vehicles, is one of their key components. The sealing performance of the battery pack has a crucial impact on the safety of the battery pack and even the entire vehicle. Therefore, relevant technical standards have extremely high requirements for the waterproof performance of battery packs, and related PACK manufacturers have included the airtightness testing of the battery casing as a mandatory inspection item in the battery casing production process. The battery pack cover, as the sealing element of the battery pack, primarily protects the battery from damage in the external environment, ensuring the safety of the battery pack.

[0003] Currently, the methods for testing the airtightness of battery pack covers include: water immersion visual bubble inspection, foreign gas detection, flow rate testing, and differential pressure testing. However, the required values ​​for the airtightness of battery pack covers are relatively small, and the surrounding environment, testing methods, tooling clamping methods, and sealing methods have a significant impact on the test results and testing cycle. The length of the testing cycle affects factory production capacity, so a testing device is needed to improve the stability of tooling testing while shortening the testing cycle. Utility Model Content

[0004] To address the shortcomings of existing technologies, this utility model provides a novel airtightness testing device for the top cover of new energy vehicle batteries, which mainly improves the stability of tooling testing and shortens the testing cycle.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a novel airtightness testing device for the top cover of a new energy vehicle battery, comprising an operating platform, an upper frame above the operating platform, several downward pressure cylinders mounted on the upper frame, the output end of each downward pressure cylinder passing through the upper frame and connected to the downward pressure frame, a sealing ring matching the shape of the battery top cover being provided on the operating platform, the sealing ring having mounting holes, and several clamping mechanisms for fixing the edge of the battery top cover being provided on the operating platform, the positions and number of the clamping mechanisms corresponding to the mounting holes.

[0006] By adopting the above structural design, and by setting up a pressing frame driven by a pressing cylinder and a sealing ring and pressing mechanism on the operating platform, automatic pressing and sealing of the battery cover is achieved. The number of pressing mechanisms corresponds to the number of sealing ring mounting holes, with one cylinder pressing for each mounting hole, completely simulating the vehicle installation state. This ensures that the pressing force can be applied evenly and directly to the sealing ring area, significantly improving the reliability and consistency of the seal, reducing misjudgments of leakage caused by uneven pressing, and improving the stability of test results.

[0007] Preferably, the clamping mechanism includes a cylinder fixedly connected to the upper surface of the operating platform, the output end of the cylinder facing and rotatably connected to a support arm, a nylon block fixedly connected to the end of the support arm away from the cylinder, and a connecting rod rotatably connected between the support arm and the cylinder.

[0008] The aforementioned structural design, with the support arm rotatably connected to the cylinder and a connecting rod, allows the nylon block to exhibit a degree of self-adaptability during the clamping process. This enables it to better conform to any minor unevenness that may exist on the edge of the battery cover, ensuring even distribution of clamping force and preventing excessive localized stress that could damage the cover or sealing ring, or insufficient clamping leading to leakage. The use of the nylon block avoids scratches on the battery cover surface that could be caused by direct contact with the metal clamping block. This design further enhances the stability and reliability of the clamping seal, reduces testing errors, and protects the product.

[0009] Preferably, grating emitters are installed at the front end and the left and right ends of the upper frame, and grating receivers are installed on the operating platform at the positions corresponding to the grating emitters.

[0010] With the above structural design, the grating can control the downward-pressing cylinder, and the grating transmitter and receiver form a safety light curtain. When the device is running, if the operator's hand or other body parts enter the danger zone and the light curtain is blocked, the safety control can be triggered immediately to stop the downward-pressing frame, effectively protecting the operator's personal safety, preventing pinching accidents, and meeting the requirements for safe production.

[0011] Preferably, several pressure blocks are installed in a matrix arrangement on the lower surface of the pressure frame.

[0012] The above structural design, with matrix-arranged pressure blocks on the lower surface of the pressure frame, allows for a more even distribution of downward pressure across the entire plane of the battery cover. This effectively prevents deformation of large or thin-walled battery covers during testing due to insufficient pressure in the center or uneven stress.

[0013] Preferably, positioning posts are fixedly connected to the four corners of the lower end of the pressure frame, and positioning cylinders matching the positioning posts are fixedly installed on the upper surface of the operating platform corresponding to the positions of the positioning posts.

[0014] The aforementioned structural design, with the positioning column and positioning cylinder working together, provides precise guidance and positioning for the pressure frame during the pressing process. This ensures that the pressure frame's position relative to the operating platform is consistent and accurate each time it is pressed down, eliminating the risk of misalignment caused by manual placement or mechanical deviation.

[0015] Preferably, the operating platform is provided with a filling block that matches the internal shape of the battery cover, and the filling block is located within the range of the sealing ring.

[0016] The above structural design incorporates a filling block within the sealing ring that matches the internal shape of the battery cover, providing strong support for the inner surface of the battery cover during airtightness testing. Furthermore, since the product is internally hollow during testing, requiring a large amount of gas for inflation, the filling block reduces the internal volume of the product and shortens the testing time.

[0017] Preferably, a guide post is fixedly connected to the upper end of the lower pressure frame, and the upper end of the guide post passes through the upper frame.

[0018] With the above structural design, the guide post passes through the upper frame, providing stable and vertical guidance for the up-and-down movement of the lower pressure frame. This prevents the lower pressure frame from tilting or wobbling during movement, ensuring that the downward pressure acts vertically downwards on the battery cover and sealing ring.

[0019] Compared with the prior art, this utility model provides a sol tank device for accelerating the dissolution of colloids, which has the following beneficial effects: By setting up a pressing frame driven by a pressing cylinder and a sealing ring and pressing mechanism on the operating platform, automatic pressing and sealing of the battery cover is achieved. The number of pressing mechanisms corresponds to the number of sealing ring mounting holes, with one cylinder pressing for each mounting hole, completely simulating the vehicle installation state. This ensures that the pressing force is applied evenly and directly to the sealing ring area, significantly improving the reliability and consistency of the seal, reducing misjudgments of leakage due to uneven pressing, and improving the stability of test results. This new airtightness testing equipment can shorten the time for airtightness testing of the battery pack cover, optimize production cycle, and improve production efficiency. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the structure of the present invention. Figure 1 ; Figure 2 This is a schematic diagram of the structure of the present invention. Figure 2 ; Figure 3 This utility model Figure 1 Enlarged structural diagram at point A; Figure 4 This utility model Figure 2Enlarged structural diagram at point B; Figure 5 This is a schematic diagram of the pressing mechanism of this utility model; Figure 6 This is a schematic diagram of the sealing ring of this utility model. Detailed Implementation

[0021] 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 of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0022] Please see Figures 1 to 6 This utility model provides a novel airtightness testing device for the top cover of a new energy vehicle battery, including an operating platform 1. An upper frame 2 is provided above the operating platform 1. Several downward pressure cylinders 6 are installed on the upper frame 2. The output end of the downward pressure cylinder 6 passes through the upper frame 2 and is connected to a downward pressure frame 3. A sealing ring 5 matching the shape of the battery top cover is provided on the operating platform 1. The sealing ring 5 is provided with mounting holes 501. Several clamping mechanisms 4 for fixing the edge of the battery top cover are provided on the operating platform 1. The positions and number of the clamping mechanisms 4 and the mounting holes 501 correspond to each other.

[0023] The clamping mechanism 4 includes a cylinder 401 fixedly connected to the upper surface of the operating platform 1. The output end of the cylinder 401 is rotatably connected to a support arm 402. A nylon block 403 is fixedly connected to one end of the support arm 402 away from the cylinder 401. A connecting rod 404 is rotatably connected between the support arm 402 and the cylinder 401.

[0024] The upper frame 2 is equipped with grating emitters 10 at its front end and left and right ends, respectively, and the operating platform 1 is equipped with grating receivers 11 at the positions corresponding to the grating emitters 10.

[0025] The lower surface of the pressure frame 3 has several pressure blocks 9 arranged in a matrix.

[0026] Positioning posts 12 are fixedly connected to the four corners of the lower end of the pressure frame 3, and positioning cylinders 13 that match the positioning posts 12 are fixedly installed on the upper surface of the operating platform 1 at the positions corresponding to the positioning posts 12.

[0027] The operating platform 1 is provided with a filling block 14 that matches the internal shape of the battery cover, and the filling block 14 is located within the range of the sealing ring 5.

[0028] The upper end of the lower pressure frame 3 is fixedly connected to a guide post 7, and the upper end of the guide post 7 passes through the upper frame 2.

[0029] Working principle: First, the worker needs to scan the barcode on the battery pack cover. Then, the worker places the battery pack cover on the sealing ring 5 of the operating platform 1. After the product is in place, the worker presses the start button. The cylinders 401 around the sealing ring 5 are inflated and compressed, and the lower frame 3 falls. After the lower frame 3 falls into place, the air tightness tester set on one side of the device is activated to test the air tightness of the battery pack cover. After the test is passed, the lower frame 3 automatically lifts up, the surrounding cylinders 401 open, the worker removes the product, and records the air tightness value and pressure value, thus completing the air tightness test of a battery pack cover.

[0030] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A novel airtightness detection device for the top cover of a new energy vehicle battery, comprising an operating platform (1), characterized in that: An upper frame (2) is provided above the operating platform (1). Several downward pressure cylinders (6) are installed on the upper frame (2). The output end of the downward pressure cylinder (6) passes through the upper frame (2) and is connected to the downward pressure frame (3). A sealing ring (5) matching the shape of the battery cover is provided on the operating platform (1). A mounting hole (501) is provided on the sealing ring (5). Several clamping mechanisms (4) for fixing the edge of the battery cover are provided on the operating platform (1). The position and number of the clamping mechanism (4) and the mounting hole (501) correspond to each other.

2. The novel airtightness detection device for the battery cover of a new energy vehicle according to claim 1, characterized in that: The clamping mechanism (4) includes a cylinder (401) fixedly connected to the upper surface of the operating platform (1). The output end of the cylinder (401) is rotatably connected to a support arm (402). A nylon block (403) is fixedly connected to one end of the support arm (402) away from the cylinder (401). A connecting rod (404) is rotatably connected between the support arm (402) and the cylinder (401).

3. A novel airtightness detection device for the top cover of a new energy vehicle battery according to claim 1, characterized in that: The upper frame (2) is equipped with grating emitters (10) at the front end and the left and right ends respectively, and the operating platform (1) is equipped with grating receivers (11) at the positions corresponding to the grating emitters (10).

4. A novel airtightness detection device for the top cover of a new energy vehicle battery according to claim 1, characterized in that: The lower surface of the pressure frame (3) is provided with several pressure blocks (9) arranged in a matrix.

5. A novel airtightness detection device for the top cover of a new energy vehicle battery according to claim 1, characterized in that: Positioning columns (12) are fixedly connected at the four corners of the lower end of the pressure frame (3), and a positioning cylinder (13) matching the positioning column (12) is fixedly installed on the upper surface of the operating platform (1) corresponding to the position of the positioning column (12).

6. A novel airtightness detection device for the top cover of a new energy vehicle battery according to claim 1, characterized in that: The operating platform (1) is provided with a filling block (14) that matches the internal shape of the battery cover, and the filling block (14) is located within the range of the sealing ring (5).

7. A novel airtightness detection device for a new energy vehicle battery cover according to claim 1, characterized in that: The upper end of the lower pressure frame (3) is fixedly connected to a guide post (7), and the upper end of the guide post (7) passes through the upper frame (2).

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