Sealing device for air tightness detection of battery tray

Abstract

The utility model discloses a sealing device for air tightness detection of a battery tray. The sealing device comprises a bearing platform; the sealing plate is U-shaped, the sealing plate is fixed on the bearing platform with an opening facing upwards, a circle of first sealing strip is arranged on the inner wall of the sealing plate along the peripheral edge of the sealing plate, and the first sealing strip seals the joint of the sealing plate and the battery tray; the supporting block is arranged in the sealing plate, and the supporting block supports the battery tray; the side pressing mechanisms are arranged on the two sides of the sealing plate and press the two sides of the sealing plate to the battery tray; the downward pressing mechanism is arranged above the battery tray, and the downward pressing mechanism is used for pressing the battery tray to the supporting block; and the plurality of hole site plugging mechanisms are arranged at the two ends of the battery tray respectively, and the plurality of hole site plugging mechanisms plug the plurality of air leakage holes in the two ends of the battery tray in a one-to-one correspondence manner. According to the utility model, omnibearing sealing of the battery tray can be realized, sealing is comprehensive and reliable, and air tightness detection of the battery tray can be realized rapidly.

Description

Technical Field

[0001] This utility model relates to the field of airtightness testing technology, and in particular to a sealing device for airtightness testing of battery trays. Background Technology

[0002] In the current technology, with the rapid development of the new energy vehicle industry, the safety and reliability of power batteries, as core components, have attracted much attention. As the supporting structure for battery modules, battery trays must possess excellent sealing performance to prevent the intrusion of external moisture and corrosive media or leakage of internal electrolyte, thereby avoiding safety hazards such as battery short circuits and thermal runaway. Therefore, battery trays must undergo rigorous airtightness testing before leaving the factory.

[0003] Currently, the industry commonly uses differential pressure or direct pressure airtightness testing methods to test the sealing performance of battery trays. These methods require a dedicated sealing device to seal the tray opening or test hole and inject test gas to create a sealed cavity. Therefore, a sealing device is needed to seal the tray for airtightness testing. Summary of the Invention

[0004] According to an embodiment of the present invention, a sealing device for detecting the airtightness of a battery tray is provided, comprising:

[0005] Supporting platform;

[0006] The sealing plate is U-shaped and fixed to the support platform with its opening facing upward. A first sealing strip is provided around the inner wall of the sealing plate along its four perimeter. The first sealing strip seals the connection between the sealing plate and the battery tray.

[0007] The support block is located inside the sealing plate and supports the battery tray.

[0008] The side-pressing mechanism is located on both sides of the sealing plate and presses the two sides of the sealing plate against the battery tray.

[0009] The pressing mechanism is located above the battery tray and presses the battery tray against the support block.

[0010] Several hole-sealing mechanisms are respectively installed at both ends of the battery tray, and the several hole-sealing mechanisms seal the several air leakage holes at both ends of the battery tray in a corresponding manner.

[0011] Furthermore, the sealing plate is made of aluminum.

[0012] Furthermore, the side-pressure mechanism includes: several side-pressure cylinders and several pressure blocks; the several side-pressure cylinders are respectively arranged on both sides of the sealing plate, and the output ends of the several side-pressure cylinders are connected to the several pressure blocks one by one. The side-pressure cylinders drive the pressure blocks to press against the sealing plate, thereby driving the sealing plate to press against the battery tray.

[0013] Furthermore, the pressing mechanism includes: a first pressing component and a second pressing component;

[0014] The first pressing component is disposed around the battery tray, and the first pressing component presses against the four edges of the top surface of the battery tray;

[0015] The second pressing component is placed on the battery tray, pressing down on the center of the top surface of the battery tray.

[0016] Furthermore, the first pressing component includes:

[0017] Several downward pressure cylinders are arranged around the sealing plate on the support platform;

[0018] Several connectors are connected one-to-one with the output ends of several downward cylinders, and each connector has at least two pressure rods fixed on it;

[0019] The downward-pressing cylinder drives the pressure rod to press against the edge of the battery tray.

[0020] Furthermore, the second pressure-down component includes:

[0021] The connecting rod has a pair of handles at the top and several pressure plates at the bottom. The connecting rod is placed on the top center of the battery tray for pressing.

[0022] A pair of support brackets are symmetrically arranged at both ends of the battery tray, and the support brackets are fixed with buckles;

[0023] The two ends of the connecting rod are placed on the support frame respectively, and the connecting rod is locked in place by the buckle.

[0024] Furthermore, the borehole sealing mechanism includes:

[0025] Mounting bracket, which is fixed to the supporting platform;

[0026] The drive cylinder is fixed on the mounting bracket;

[0027] A sealing plate is fixed to the output end of the drive cylinder, and a second sealing strip is provided around its four perimeter.

[0028] The drive cylinder drives the sealing plate to connect with the battery tray, and the second sealing strip seals the air leakage hole of the battery tray.

[0029] Furthermore, it also includes: four positioning posts, which are fixed on the support platform and respectively set at the four corners of the sealing plate, and the four positioning posts position the battery tray.

[0030] The sealing device for battery tray airtightness testing according to the present invention can achieve all-round sealing of the battery tray, and the sealing is comprehensive and reliable, which facilitates rapid testing of battery tray airtightness.

[0031] It should be understood that both the foregoing general description and the following detailed description are exemplary and intended to provide further illustration of the claimed technology. Attached Figure Description

[0032] Figure 1 This is a schematic diagram of the sealing device for testing the airtightness of a battery tray according to an embodiment of the present invention.

[0033] Figure 2 This is a schematic diagram of a battery tray for a sealing device used for airtightness testing of a battery tray according to an embodiment of the present invention;

[0034] Figure 3 This is a schematic diagram of the sealing plate of a sealing device for testing the airtightness of a battery tray according to an embodiment of the present invention;

[0035] Figure 4 This is a schematic diagram of a support block for a sealing device used for airtightness testing of a battery tray according to an embodiment of the present invention;

[0036] Figure 5 This is a schematic diagram of the first pressing component of a sealing device for testing the airtightness of a battery tray according to an embodiment of the present invention;

[0037] Figure 6 This is a schematic diagram of the second pressing component of the sealing device for testing the airtightness of a battery tray according to an embodiment of the present invention;

[0038] Figure 7 This is a schematic diagram of the side pressure mechanism of a sealing device for testing the airtightness of a battery tray according to an embodiment of the present invention;

[0039] Figure 8 This is a schematic diagram of the hole sealing mechanism of a sealing device for testing the airtightness of a battery tray according to an embodiment of the present invention. Detailed Implementation

[0040] The preferred embodiments of the present invention will be described in detail below with reference to the accompanying drawings, further illustrating the present invention.

[0041] First, combine Figures 1-8 This invention describes a sealing device for testing the airtightness of a battery tray according to an embodiment of the present invention. It is used for airtightness testing and has a wide range of applications.

[0042] like Figures 1-8As shown, the sealing device for testing the airtightness of a battery tray according to an embodiment of the present invention includes: a support platform 1; a sealing plate 2; a support block 3; a side pressing mechanism 4; a downward pressing mechanism 5; and a plurality of hole sealing mechanisms 6.

[0043] Specifically, such as Figures 1-8 As shown, in this embodiment, the sealing plate 2 is U-shaped, unlike the previous flat sealing plate. In this embodiment, the sealing plate 2 is U-shaped to fit the shape of the battery tray, achieving a tight fit from all sides. The sealing plate 2 is fixed to the support platform 1 with its opening facing upwards. A first sealing strip 21 is provided around the inner wall of the sealing plate 2 along its four perimeter. The first sealing strip 21 seals the junction between the sealing plate 2 and the battery tray 7. The first sealing strip 21 is adapted to the shape of the sealing plate 2 and surrounds it in a U-shape. Figure 2 It can be seen that the battery tray 7 is also U-shaped. The sealing plate 2 and the battery tray 7 are placed alternately. The space between the sealing plate 2 and the battery tray 7 is formed by a first sealing strip 21 to form a sealed cavity, which facilitates ventilation for airtightness testing. The support block 3 is set inside the sealing plate 2. The support block 3 supports the battery tray 7, prevents damage to the battery tray 7, and positions the battery tray 7. The side pressing mechanism 4 is set on both sides of the sealing plate 2, pressing the two sides of the sealing plate 2 against the battery tray 7 to ensure tight contact between the sealing plate 2 and the two sides of the battery tray 7, achieving reliable sealing and preventing damage. To prevent test gas from leaking from the gap between the sealing plate 2 and the battery tray 7, a pressing mechanism 5 is set above the battery tray 7. The pressing mechanism 5 presses the battery tray 7 against the support block 3 and the sealing plate 2, so that the bottom of the battery tray 7 is in close contact with the sealing plate 2. Several hole sealing mechanisms 6 are respectively set at both ends of the battery tray 7. The several hole sealing mechanisms 6 seal several leakage holes at both ends of the battery tray 7 one by one to prevent test gas from leaking from the leakage holes of the battery tray 7. This device achieves all-round sealing through various mechanisms to ensure airtightness.

[0044] Furthermore, in this embodiment, the sealing plate 2 is an aluminum plate, which is low in cost, has good ductility, can be repeatedly stretched, is not easy to break, and facilitates the side pressing mechanism 4 to press the two sides of the sealing plate 2 against the battery tray 7, thereby improving its service life.

[0045] Specifically, such as Figures 1-8 As shown, in this embodiment, the side-pressing mechanism 4 includes: a plurality of side-pressing cylinders 41 and a plurality of pressing blocks 42; the plurality of side-pressing cylinders 41 are respectively disposed on both sides of the sealing plate 2, and the output ends of the plurality of side-pressing cylinders 41 are connected to the plurality of pressing blocks 42 in a corresponding manner. The side-pressing cylinders 41 drive the pressing blocks 42 to press against the sealing plate 2, thereby driving the sealing plate 2 to press against the battery tray 7, so as to achieve close contact between the two sides of the sealing plate 2 and the battery tray 7.

[0046] Specifically, such as Figures 1-8As shown, in this embodiment, the pressing mechanism 5 includes: a first pressing component and a second pressing component; the first pressing component is disposed around the battery tray 7, and the first pressing component presses against the four edges of the top surface of the battery tray 7; the second pressing component is placed on the battery tray 7, pressing against the center of the top surface of the battery tray 7. The first pressing component presses against the four edges of the battery tray 7 to prevent the edges from lifting up, and the second pressing component presses against the center of the battery tray 7 to prevent the center from bulging up, thus ensuring sealing. The first pressing component and the second pressing component achieve full pressing of the battery tray 7, ensuring close contact between the battery tray 7 and the sealing plate 2.

[0047] Furthermore, such as Figures 1-8 As shown, in this embodiment, the first pressing component includes: a plurality of pressing cylinders 51, which are arranged around the sealing plate 2 on the support platform 1. The pressing cylinders 51 can be rotary pressing cylinders 51 or side-positioning cylinders; a plurality of connecting members 52, which are connected one-to-one with the output ends of the plurality of pressing cylinders 51. The connecting members 52 are connecting frames, and each connecting member 52 is fixed with at least two pressure rods 53 to achieve multi-point pressing, balance the pressing force, prevent damage to the battery tray 7, and ensure the comprehensiveness and stability of the pressing; the pressing cylinders 51 drive the pressure rods 53 to press the edge of the battery tray 7.

[0048] Furthermore, such as Figures 1-8 As shown, in this embodiment, the second pressing component includes: a connecting rod 54, with a pair of handles 55 at the top and several pressure plates 56 at the bottom. The connecting rod 54 is placed on the center of the top surface of the battery tray 7 for pressing. The several pressure plates 56 achieve multi-point pressing and balance the pressing force. The pair of handles 55 facilitates the handling and movement of the connecting rod 54. A pair of support frames 57 are symmetrically arranged at both ends of the battery tray 7 and fixed on the support platform 1. The support frames 57 are fixed with buckles 58. The two ends of the connecting rod 54 are respectively placed on the support frames 57, and the buckles 58 lock and fix the connecting rod 54 to ensure the pressing force.

[0049] Specifically, such as Figures 1-8 As shown, in this embodiment, the hole sealing mechanism 6 includes: a mounting frame 61, which is fixed on the support platform 1; a drive cylinder 62, which is fixed on the mounting frame 61; and a sealing plate 63, which is fixed at the output end of the drive cylinder 62. A second sealing strip 64 is provided around the four periphery of the sealing plate 63. The drive cylinder 62 drives the sealing plate 63 to connect with the battery tray 7, and the second sealing strip 64 seals the air leakage hole of the battery tray 7, achieving precise point-to-point sealing.

[0050] Specifically, such as Figures 1-8As shown, in this embodiment, it also includes: four positioning posts 8, which are fixed on the support platform 1 and respectively set at the four corners of the sealing plate 2. The four positioning posts 8 position the battery tray 7 to ensure that the battery tray 7 is in an accurate position.

[0051] Working principle: During use, the battery tray 7 to be tested for air tightness is placed upside down on the support block 3, the connecting rod 54 is pressed and fixed on the battery tray 7, and the buckle 58 on the support frame 57 is locked; then the pressing cylinder 51 drives the pressing rod 53 to press down the four edges of the battery tray 7, the side pressing cylinder 41 drives the pressing block 42 to extend, and pushes the two sides of the sealing plate 2 towards the battery tray 7 to seal it. The driving cylinder 62 then drives the sealing plate 63 to extend, sealing the air leakage holes at both ends of the battery tray 7. Finally, the battery tray 7 is filled with air to test for air tightness.

[0052] Above, refer to Figures 1-8 A sealing device for airtightness testing of battery tray 7 according to an embodiment of the present invention is described, which can achieve all-round sealing of battery tray 7, and the sealing is comprehensive and reliable, making it easy to quickly achieve airtightness testing of battery tray 7.

[0053] It should be noted that, in this specification, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus. Unless otherwise specified, an element defined by the phrase "comprising..." does not exclude the presence of additional identical elements in the process, method, article, or apparatus that includes that element.

[0054] Although the present invention has been described in detail through the above preferred embodiments, it should be understood that the above description should not be considered as a limitation of the present invention. Various modifications and substitutions to the present invention will be apparent to those skilled in the art after reading the above content. Therefore, the scope of protection of the present invention should be defined by the appended claims.

Claims

1. A sealing device for battery tray airtightness detection, characterized in that, The utility model relates to a battery tray sealing device, which comprises a supporting platform, a sealing plate fixed on the supporting platform, a support block arranged in the sealing plate, a side pressing mechanism arranged on both sides of the sealing plate, a lower pressing mechanism arranged above the battery tray, and a plurality of hole position blocking mechanisms arranged at both ends of the battery tray. The sealing plate is a U-shaped aluminum plate. The side pressing mechanism comprises a plurality of side pressing cylinders and a plurality of pressing blocks. The lower pressing mechanism comprises a first lower pressing assembly and a second lower pressing assembly. The first lower pressing assembly is arranged around the battery tray and covers the top surface of the battery tray. The second lower pressing assembly is placed on the battery tray and covers the middle part of the top surface of the battery tray. The first lower pressing assembly comprises a plurality of lower pressing cylinders arranged around the sealing plate on the supporting platform, a plurality of connecting members connected to the output ends of the lower pressing cylinders, and at least two pressing rods fixed on each connecting member.

2. The sealing device for battery tray airtightness detection of claim 1, wherein, The second lower pressing assembly comprises a connecting rod, a pair of supporting frames, and a pair of buckles.

3. The sealing device for battery tray airtightness detection according to claim 1 or 2, characterized in that, The connecting rod has a pair of handles at the top and a plurality of pressing discs at the bottom.

4. The sealing device for battery tray hermeticity testing of claim 1, wherein, The connecting rod is placed on the middle part of the top surface of the battery tray for pressing. The supporting frames are symmetrically arranged at both ends of the battery tray. The buckles are fixed on the supporting frames.

5. The sealing device for battery tray hermeticity testing of claim 4, wherein, The ends of the connecting rod are respectively placed on the supporting frames, and the buckles lock and fix the connecting rod. The hole position blocking mechanism comprises a mounting frame fixed on the supporting platform, a driving cylinder fixed on the mounting frame, and a blocking plate fixed on the output end of the driving cylinder. The driving cylinder drives the blocking plate to contact the battery tray, and the second sealing strip seals the air leakage hole of the battery tray. The utility model further comprises four positioning columns fixed on the supporting platform and arranged at the four corners of the sealing plate.

6. The sealing device for battery tray hermeticity testing of claim 4, wherein, The four positioning columns position the battery tray. ​ ​ ​ 7. The sealing device for battery tray hermeticity testing of claim 1, wherein, ​ ​ ​ ​ ​ 8. The sealing device for battery tray hermeticity testing of claim 1, wherein, ​

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