Airtight tool structure for sealing test of battery pack cover plate

Abstract

The utility model provides an airtight tool structure for a sealing test of a battery pack cover plate, which comprises an airtight detection rack and a cover plate detection table top mounted at the top end of the airtight detection rack, and further comprises a pressing mechanism, the pressing mechanism comprises a plurality of pressing air cylinders, a plurality of hinge shafts, a plurality of overturning pressing rods and a plurality of insulation pressing heads, and the pressing mechanism comprises a plurality of pressing air cylinders, a plurality of hinge shafts, a plurality of overturning pressing rods and a plurality of insulation pressing heads. The plurality of pressing cylinders are installed at the top end of the airtightness detection rack and are distributed at equal intervals along the contour of the cover plate detection table top, and the pressing cylinders are connected with the overturning pressing rods with the insulation pressing heads through the hinge shafts, so that the cover plate can be better limited, the position precision of the cover plate during detection is ensured, and errors of detection results caused by deviation of the position of the cover plate are reduced.

Description

Technical Field

[0001] This utility model belongs to the field of battery pack cover testing technology, and relates to an airtight tooling structure for battery pack cover sealing testing. Background Technology

[0002] A battery pack is an integrated unit composed of multiple battery modules, used to store and provide electrical energy. It is a higher-level component in a battery system, typically consisting of several battery modules, connectors, a battery management system, a cooling system, electrical interfaces, and a housing.

[0003] The outer shell includes a cover structure to better protect the battery module components inside. During the production of the cover, an airtightness test is required to ensure stable operation of the battery under various environments. Existing testing technology uses a gas detection method, connecting the cover to the test frame platform, but it lacks a mechanism to limit the cover's position. Under the action of air pressure, the position of the cover and the test frame platform deviates, causing errors in the test results. Therefore, we designed an airtight tooling structure for battery pack cover sealing test. Summary of the Invention

[0004] The purpose of this invention is to provide an airtight tooling structure for battery pack cover sealing tests, in order to solve the problems mentioned in the background art.

[0005] The objective of this utility model can be achieved through the following technical solution: an airtight tooling structure for battery pack cover sealing test, including an airtight testing frame and a cover testing platform, wherein the cover testing platform is installed at the top of the airtight testing frame, and further includes a clamping mechanism; the clamping mechanism includes multiple clamping cylinders, multiple hinge shafts, multiple flipping pressure rods and multiple insulating pressure heads, wherein the multiple clamping cylinders are all installed at the top of the airtight testing frame and are equidistantly distributed along the contour of the cover testing platform, the output end of each clamping cylinder is connected to a hinge shaft, the hinge part of each hinge shaft is connected to a flipping pressure rod, the end of each flipping pressure rod is connected to a corresponding insulating pressure head, and each insulating pressure head corresponds to the cover testing platform.

[0006] Specifically: two through holes are opened at the top of each cylinder mounting plate, and every two pressure rod shafts pass through the two through holes and are connected to a pressure plate.

[0007] In the aforementioned airtight fixture structure for battery pack cover sealing testing, the top of the airtightness testing frame further includes an upper pressure assembly. This upper pressure assembly comprises two gantry frames, two frame connecting plates, and multiple pressure plates. The ends of the two gantry frames are mounted on the top of the airtightness testing frame via the frame connecting plates. Multiple cylinder mounting plates are arranged between the two gantry frames. Each cylinder mounting plate has an upper pressure cylinder mounted at both ends. Each upper pressure cylinder's output shaft is equipped with a pressure rod shaft. Every two pressure rod shafts are connected to both ends of a pressure plate, connecting the pressure plate to the cover plate testing table. This arrangement aims to use the upper pressure assembly to achieve upper pressure and limit the cover plate, while also allowing the tested cover plate to be lifted and easily transferred off the airtightness testing frame's cover plate testing table.

[0008] In the aforementioned airtight fixture structure for battery pack cover sealing testing, a sliding groove is provided at the edge of the top of the airtightness testing frame. A pneumatic guide rail is installed on one side of the sliding groove, and a sliding seat is connected to one end of the pneumatic guide rail. The sliding seat is connected to one of the frame connecting plates via a triangular bracket. This design facilitates the transfer of the entire pressing assembly to the front end of the airtightness testing frame via the movement of the sliding seat along the pneumatic guide rail, enabling better unloading of the tested cover and providing excellent material handling convenience.

[0009] In the aforementioned airtight fixture structure for battery pack cover sealing testing, two auxiliary platforms are installed at the front end of the airtight testing frame. Each auxiliary platform has a limit switch at its top, which abuts against the frame connecting plate. Each auxiliary platform also has an auxiliary slide rail at its top, which mates with a sliding groove, and the widths of the auxiliary slide rail and the sliding groove are equal. This design ensures proper limiting operation, preventing the frame connecting plate from sliding beyond its maximum distance due to the limit switch, thus avoiding cover detachment caused by insufficient load-bearing capacity.

[0010] Compared with the prior art, the advantages of the airtight fixture structure for battery pack cover sealing test of this utility model are as follows: By setting a clamping mechanism including multiple clamping cylinders, multiple hinge shafts, multiple flipping pressure rods and multiple insulating pressure heads, the clamping cylinders are all installed at the top of the airtightness testing frame and are equidistantly distributed along the contour of the cover plate testing table. The clamping cylinders are connected to the flipping pressure rods with insulating pressure heads through the hinge shafts. This can better limit the cover plate, ensure the positional accuracy of the cover plate during testing, and reduce errors in the test results caused by deviations in the position of the cover plate. By setting an upper pressure assembly, which includes two gantry frames, two frame connecting plates and multiple pressure plates, the upper pressure assembly can be used to achieve upper clamping and limiting of the cover plate, and can also lift the tested cover plate, making it convenient to transfer the tested cover plate off the cover plate testing table of the airtightness testing frame. Attached Figure Description

[0011] Figure 1 This is a three-dimensional structural diagram of the airtight tooling structure used for sealing test of battery pack cover plate according to this utility model.

[0012] Figure 2 This is a three-dimensional structural diagram of the airtight tooling structure used for sealing test of battery pack cover plate according to this utility model.

[0013] Figure 3 This is a three-dimensional structural diagram of the airtight tooling structure used for sealing test of battery pack cover plate according to this utility model.

[0014] Figure 4 This is a three-dimensional structural diagram of the airtight tooling structure used for sealing test of battery pack cover plate according to this utility model.

[0015] In the diagram, 1. Air tightness testing frame; 2. Cover plate testing platform; 3. Gantry frame; 4. Frame connecting plate; 5. Cylinder mounting plate; 6. Pressing cylinder; 7. Pressure rod shaft; 8. Pressure plate; 9. Sliding groove; 10. Pneumatic guide rail; 11. Sliding seat; 12. Triangular bracket; 13. Clamping cylinder; 14. Hinge shaft; 15. Flipping pressure rod; 16. Insulating pressure head; 17. Auxiliary platform; 18. Limit switch. Detailed Implementation

[0016] The following are specific embodiments of the present invention, which are described in conjunction with the accompanying drawings. However, the present invention is not limited to these embodiments.

[0017] like Figure 1 , Figure 2 , Figure 3 and Figure 4 As shown, this utility model provides an airtight fixture structure for battery pack cover sealing tests.

[0018] Example 1: The airtight fixture includes an airtightness testing frame 1 and a cover plate testing platform 2. The cover plate testing platform 2 is installed at the top of the airtightness testing frame 1 and also includes a clamping mechanism. The clamping mechanism includes multiple clamping cylinders 13, multiple hinge shafts 14, multiple flipping pressure rods 15, and multiple insulating pressure heads 16. The multiple clamping cylinders 13 are all installed at the top of the airtightness testing frame 1 and are equidistantly distributed along the contour of the cover plate testing platform 2. The output end of each clamping cylinder 13 is connected to a hinge shaft 14. The hinge part of each hinge shaft 14 is connected to a flipping pressure rod 15. The end of each flipping pressure rod 15 is connected to a corresponding insulating pressure head 16. Each insulating pressure head 16 corresponds to the cover plate testing platform 2.

[0019] Specifically: two through holes are opened at the top of each cylinder mounting plate 5, and every two pressure rod shafts 7 pass through the two through holes and are connected to a pressure plate 8.

[0020] When this solution is used, the cover plate is placed at the top of the cover plate testing platform 2. Through existing PLC integrated control technology, multiple pressing cylinders 13 are synchronously contracted, which drives the flipping pressure rod 15 to flip downward so that the insulating pressure head 16 presses against the edge of the cover plate. This can better constrain the cover plate and ensure the accuracy of the cover plate position during the airtightness test, reducing the error in the test results caused by the deviation of the cover plate position.

[0021] Example 2: The airtight fixture includes an airtightness testing frame 1 and a cover plate testing platform 2. The cover plate testing platform 2 is installed at the top of the airtightness testing frame 1. A clamping mechanism is also provided, including multiple clamping cylinders 13, multiple hinge shafts 14, multiple flipping pressure rods 15, and multiple insulating pressure heads 16. Further, an upper pressure assembly is provided at the top of the airtightness testing frame 1. The upper pressure assembly includes two gantry frames 3, two frame connecting plates 4, and multiple pressure plates 8. The ends of the two gantry frames 3 are installed at the top of the airtightness testing frame 1 through the frame connecting plates 4. Multiple cylinder mounting plates 5 are provided between the two gantry frames 3. Each cylinder mounting plate 5 has an upper pressure cylinder 6 installed at both ends. Each upper pressure cylinder 6 has a pressure rod shaft 7 installed on its output shaft. Every two pressure rod shafts 7 are connected to the two ends of a pressure plate 8, so that the pressure plate 8 is connected to the cover plate testing platform 2.

[0022] When using this solution: the cover plate is installed at the bottom of the pressure plate 8 with fasteners. The upper pressure cylinder 6 and the pressure rod shaft 7 are connected by a U-shaped frame (not shown in the figure). The extension and retraction of the upper pressure cylinder 6 will cause the pressure rod shaft 7 to pull or press the pressure plate 8. This not only increases the limiting effect on the cover plate, but also lifts the cover plate to achieve better horizontal transfer.

[0023] Example 3: The airtight fixture includes an airtightness testing frame 1 and a cover plate testing table 2. The cover plate testing table 2 is installed on the top of the airtightness testing frame 1. A clamping mechanism is also provided, including multiple clamping cylinders 13, multiple hinge shafts 14, multiple flipping pressure rods 15, and multiple insulating pressure heads 16. Further, an upper pressure assembly is provided on the top of the airtightness testing frame 1. The upper pressure assembly includes two gantry frames 3, two frame connecting plates 4, and multiple pressure plates 8. The ends of the two gantry frames 3 are installed on the top of the airtightness testing frame 1 through the frame connecting plates 4. Multiple cylinder mounting plates 5 are provided between the two gantry frames 3. Each cylinder mounting plate 5 has an upper pressure cylinder 6 installed at both ends. Each upper pressure cylinder 6 has a pressure rod shaft 7 installed on its output shaft. Every two pressure rod shafts 7 are connected to the two ends of a pressure plate 8, so that the pressure plate 8 is connected to the cover plate testing table 2.

[0024] A sliding groove 9 is provided at the edge of the top of the airtightness testing frame 1. A pneumatic guide rail 10 is installed on the side of one of the sliding grooves 9. One end of the pneumatic guide rail 10 is connected to a sliding seat 11. The sliding seat 11 is connected to one of the frame connecting plates 4 through a triangular bracket 12. Two auxiliary platforms 17 are installed at the front end of the airtightness testing frame 1. Each auxiliary platform 17 has a limit switch 18 installed at its top. The limit switch 18 abuts against the frame connecting plate 4. An auxiliary slide is provided at the top of each auxiliary platform 17. The auxiliary slide is connected to the sliding groove 9 and the width of the auxiliary slide is equal to that of the sliding groove 9.

[0025] The frame connecting plate 4 can move along the sliding groove 9 and the auxiliary slide, transferring the entire upper pressure assembly to the front end of the airtightness testing frame 1, realizing automated cover plate loading and unloading operations.

[0026] Contents not described in detail herein are existing technologies known to those skilled in the art. The specific embodiments described herein are merely illustrative examples illustrating the spirit of this invention. Those skilled in the art to which this invention pertains may make various modifications or additions to the described specific embodiments or use similar methods to substitute them, without departing from the spirit of this invention or exceeding the scope defined by the appended claims.

Claims

1. An airtight tool structure for battery pack cover plate sealing test, comprising an airtight detection rack (1) and a cover plate detection table (2), the cover plate detection table (2) is installed at the top end of the airtight detection rack (1), characterized in that, Also include the compression mechanism; The compression mechanism includes a plurality of compression cylinders (13), a plurality of hinge shafts (14), a plurality of turnover pressure rods (15) and a plurality of insulation pressure heads (16), the plurality of compression cylinders (13) are installed at the top of the air tightness detection rack (1) and are distributed equidistantly along the cover detection table (2) contour, the output end of each compression cylinder (13) is connected with the hinge shaft (14), the hinge part of each hinge shaft (14) is connected with the turnover pressure rod (15), the end of each turnover pressure rod (15) is connected with the corresponding insulation pressure head (16), and each insulation pressure head (16) corresponds to the cover detection table (2).

2. The air-tight tooling structure for battery pack cover plate seal test of claim 1, wherein, The top of the air tightness detection rack (1) further comprises an upper pressing assembly, the upper pressing assembly comprises two gantry frames (3), two rack connecting plates (4) and a plurality of pressing plates (8), the ends of the two gantry frames (3) are installed at the top of the air tightness detection rack (1) through the rack connecting plate (4), a plurality of cylinder mounting plates (5) are arranged between the two gantry frames (3), upper pressing cylinders (6) are installed at both ends of each cylinder mounting plate (5), pressing rod shafts (7) are installed on the output shaft of each upper pressing cylinder (6), and every two pressing rod shafts (7) are connected at both ends of a pressing plate (8) and make the pressing plate (8) connected with the cover detection table (2).

3. The air-tight tooling structure for battery pack cover plate seal test of claim 1, wherein, The edge of the top of the air tightness detection rack (1) is provided with a sliding groove (9), and the edge of the sliding groove (9) on one side is provided with a pneumatic guide rail (10), one end of the pneumatic guide rail (10) is connected with a sliding seat (11), and the sliding seat (11) is connected with one of the rack connecting plates (4) through a triangular support (12).

4. The air-tight tooling structure for battery pack cover plate seal test of claim 1, wherein, The front end of the air tightness detection rack (1) is provided with two auxiliary tables (17), and the top of each auxiliary table (17) is provided with a limit switch (18), and the limit switch (18) abuts against the rack connecting plate (4).

5. The air-tight tooling structure for battery pack cover plate seal test of claim 4, wherein, The top of each auxiliary table (17) is provided with an auxiliary sliding way, the auxiliary sliding way is in butt joint with the sliding groove (9), and the width size of the auxiliary sliding way is equal to that of the sliding groove (9).

6. The air-tight tooling structure for battery pack cover plate seal test of claim 2, wherein, The top of each cylinder mounting plate (5) is provided with two through holes, and every two pressing rod shafts (7) pass through the two through holes and are connected with a pressing plate (8).

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