Airtightness test equipment suitable for detecting box cover with side observation window

Abstract

The invention discloses airtightness test equipment suitable for detecting a box cover with a side observation window, and the equipment comprises a pedestal, a substrate is slidably disposed on the pedestal, the substrate is used for placing a to-be-detected battery box cover, one end of the pedestal in the length direction is provided with a gantry support, and the upper end of the gantry support is provided with a top pressing assembly. The top pressing assembly is used for tightly pressing a to-be-detected battery box cover on the top of the base plate, a horizontal blocking assembly is horizontally arranged on the base plate, a baffle is arranged at one end of the horizontal blocking assembly, and the baffle can be forced to be close to or away from an observation opening in the side portion of the to-be-detected battery box cover by driving the horizontal blocking assembly. And the observation opening can be blocked. The air tightness detection device has the beneficial effects that through the arranged horizontal plugging assembly, when the top pressing assembly tightly presses the to-be-detected battery box cover on the base plate, the baffle can plug the observation opening, so that a closed space is formed in the to-be-detected battery box cover, and air tightness detection of the to-be-detected battery box cover is facilitated.

Description

Technical Field

[0001] The present invention relates to the technical field of battery boxes for new energy vehicles, and in particular to an airtightness testing device suitable for detecting a box cover with a side observation window. Background Art

[0002] As one of the important components of new energy vehicles, new energy batteries can directly provide a power source for new energy vehicles. Therefore, the quality of the battery can directly affect the overall usability of the vehicle. In terms of physical structure, new energy batteries are composed of a battery box and battery packs stacked inside the battery box. In order to ensure the safe and stable use of the entire battery, the sealing of the battery box is very important, and the sealing of the entire battery box is mainly determined by the battery box cover. Therefore, the battery box cover needs to be tested for airtightness before it is put into use.

[0003] In the prior art, the air tightness test of the battery case cover is mainly performed by placing it on a test platform, pressing it circumferentially with a cylinder, and finally ventilating the inside of the battery case cover for air tightness test. However, the above-mentioned testing equipment is only applicable to battery case covers without circumferential openings. For the battery case covers with observation ports currently on the market, the traditional air tightness testing devices cannot meet the demand. Therefore, there is an urgent need for a testing device that can detect battery case covers with observation windows on the market. Summary of the invention

[0004] In view of this, the present invention provides an airtightness testing device suitable for detecting a box cover with a side observation window, aiming to meet the technical requirements proposed by the background technology.

[0005] To achieve the above purpose, the technical solution of the present invention is as follows:

[0006] A device for testing the airtightness of a box cover with a side observation window comprises a base, a substrate is slidably arranged on the base along its length direction, a core seat adapted to the inner cavity of the battery box cover is fixed on the base, and is used to position and place the battery box cover to be tested, a gantry bracket is arranged at one end in the length direction of the base, a top pressing assembly is arranged at the upper end of the gantry bracket, when the base carries the battery box cover to be tested and moves to the bottom of the gantry bracket, the top pressing assembly can press the battery box cover to be tested tightly against the top of the base, and is characterized in that: a horizontal blocking assembly is installed at one end in the sliding direction of the base, and the horizontal blocking assembly has a baffle which can move along the sliding direction of the base. After the battery box cover is positioned and placed on the core seat, the baffle is driven to move along the sliding direction of the base plate, so that the baffle can be blocked on the observation port on the side of the battery box cover to be inspected; the core seat includes a support block and a support baffle fixedly arranged on the top of the base plate, the support block is used to support the top of the battery box cover, and the support baffle is used to block the observation port on the side of the battery box cover; the base plate is provided with an edge pressing assembly on one side of the horizontal blocking assembly, and the edge pressing assembly is used to press the bottom flange of the side of the battery box cover with the observation port onto the base plate; the top pressing assembly has an extension plate extending vertically downward, and the extension plate is used to press the remaining three bottom flanges of the battery box cover onto the base plate.

[0007] By adopting the above structure, through the provision of the horizontal blocking assembly and the core seat, when the top pressing assembly presses the battery box cover to be tested tightly against the substrate, the observation port can be blocked between the baffle plate and the supporting baffle plate, thereby forming a closed space inside the battery box cover to be tested, thereby facilitating the airtightness test of the battery box cover to be tested, and the provided edge pressing assembly and extension plate ensure that the bottom flange of the battery box cover is pressed tightly against the substrate.

[0008] Preferably, the horizontal blocking component is a first telescopic cylinder horizontally arranged on the substrate, the baffle is fixedly mounted on the end of the cylinder rod of the first telescopic cylinder, and a circle of sealing gasket is provided on the side of the baffle close to the battery box cover to be tested, and the sealing gasket is used to be close to the side of the battery box cover to be tested. With the above structure, the observation port can be blocked by the first telescopic cylinder, and the provided sealing gasket ensures the airtightness of the baffle blocking the observation port, which is beneficial to the airtightness detection of the battery box cover to be tested.

[0009] Preferably, the edge pressing assembly includes a second telescopic cylinder vertically arranged, and a pressing plate is arranged at the end of the cylinder rod of the second telescopic cylinder, and the pressing plate is used to press the bottom flange of the battery box cover with the observation port on the substrate. With the above structure, the bottom edge of the battery box cover with the observation port to be tested can be pressed on the substrate, thereby ensuring the accuracy of the airtightness test.

[0010] Preferably, the top pressing assembly includes a third telescopic cylinder vertically arranged on the top of the gantry bracket, a rectangular cover plate is arranged at the lower end of the third telescopic cylinder, the rectangular cover plate can be pressed downward against the top of the battery box cover to be tested, and the extension plate is formed on the circumferential edge of the rectangular cover plate. With the above structure, the rectangular cover plate can avoid the bulging phenomenon on the top of the battery box cover to be tested during the airtightness test, and the extension plate can press the circumferential edge of the battery box cover to be tested against the substrate, thereby ensuring that the airtightness test of the battery box cover to be tested is more accurate.

[0011] Preferably, two first slide rails are arranged in parallel on the base along its length direction, and first sliders are slidably arranged on the first slide rails, and the base plate is fixedly arranged on the top of the first sliders; a fourth telescopic cylinder is arranged on the base along its length direction, and the cylinder rod end of the fourth telescopic cylinder is fixedly connected to the base plate. With the above structure, the base plate can slide on the base, thereby facilitating the installation and removal of the battery box cover to be tested.

[0012] Preferably, the edge pressing assembly further comprises a second slide rail arranged at the bottom of the substrate, the second slide rail is arranged in parallel with the first slide rail, a second slider is slidably arranged on the second slide rail, the second telescopic cylinder is fixed on the second slider, a fifth telescopic cylinder arranged horizontally is provided on the substrate, the cylinder rod end of the fifth telescopic cylinder is connected to the second slider, and the fifth telescopic cylinder is driven to force the pressing plate to approach or move away from the battery box cover to be detected in the horizontal direction. With the above structure, the position of the pressing plate can be adjusted by horizontal movement to ensure that the pressing plate can stably press the edge of the battery box cover to be detected onto the substrate.

[0013] Preferably, two groups of edge pressing components are provided, and the horizontal blocking component is provided between the two groups of edge pressing components. With the above structure, the bottom edge of the side of the battery box cover to be tested with the observation port can be completely pressed against the substrate, thereby ensuring the airtightness of the inside of the battery box cover to be tested.

[0014] As a preference, both sides of the substrate in the width direction are provided with limit blocks, and the battery box cover to be inspected is arranged between the limit blocks on both sides. With the above structure, the installation position of the battery box cover to be inspected can be limited.

[0015] Preferably, a roller 23 is provided at the bottom of the base 1. The above structure can facilitate the movement of the entire airtight test equipment.

[0016] Compared with the prior art, the present invention has the following beneficial effects:

[0017] 1. The airtightness testing device for detecting the box cover with the side observation window provided by the present invention is adopted. By means of the horizontal blocking assembly and the core seat, when the top pressing assembly presses the battery box cover to be detected tightly against the substrate, the observation port can be blocked between the baffle plate and the supporting baffle plate, so that a closed space is formed inside the battery box cover to be detected, thereby facilitating the airtightness detection of the battery box cover to be detected. The edge pressing assembly and the extension plate ensure that the bottom flange of the battery box cover is pressed tightly against the substrate, thereby ensuring the accuracy of the airtightness detection. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the three-dimensional structure of the airtight testing equipment;

[0019] Figure 2 is a schematic structural diagram of a battery box cover 17 to be tested;

[0020] Figure 3 is a schematic structural diagram of the substrate 2;

[0021] Figure 4 It is a structural schematic diagram of the base 1;

[0022] Figure 5 It is a structural schematic diagram of the top pressing component A;

[0023] Figure 6 is a structural schematic diagram of the edge pressing component B;

[0024] Figure 7 It is a structural schematic diagram of the horizontal plugging component. DETAILED DESCRIPTION

[0025] The present invention is further described below in conjunction with embodiments and drawings.

[0026] The directional words such as "front", "back", "left", and "right" in this embodiment are all represented by Figure 1 The coordinate axis is used as the reference.

[0027] The airtight testing equipment in this embodiment is used to detect Figure 2 The battery box cover 17 shown in the figure has an overall rectangular structure, an observation port 17a on one side thereof, and a flange 17b on the circumferential bottom thereof. During the actual detection process, the flange 17b is used to directly contact the top of the substrate 2 and support the entire battery box cover 17.

[0028] like Figure 1 , Figure 3 and Figure 5As shown, a kind of airtightness testing equipment suitable for testing a box cover with a side observation window comprises a base 1, a base plate 2 is slidably mounted on the base 1 along its length direction, a core seat adapted to the inner cavity of the battery box cover 17 to be tested is fixedly mounted on the base 2, and the core seat is used to position and place the battery box cover 17 to be tested, a gantry bracket 3 is fixedly mounted on the rear end of the base 1, and a top pressing component A is mounted on the upper end of the gantry bracket 3, when the base 2 carries the battery box cover 17 to be tested and moves to the bottom of the gantry bracket 3, the top pressing component A can press the battery box cover 17 to be tested tightly on the top of the base 2. A horizontal plugging component is mounted on the front end of the base 2, and a baffle 4a is fixedly mounted on one end of the horizontal plugging component, when the battery box cover 17 to be tested is positioned and placed on the core seat, the baffle 4a is driven to move along the sliding direction of the base 2, so that the baffle 4a can be blocked on the observation port 17a on the side of the battery box cover 17 to be tested. In this embodiment, the core base includes a support block 21 fixedly arranged on the top of the base plate 2, and a support baffle 22 arranged on the side close to the observation port 17a, and the support baffle 22 is also used to block the observation port 17a on the side of the battery box cover 17. An edge pressing component B is also arranged on the front side of the upper end of the base plate 2, and the edge pressing component B is used to press the flange 17b of the side of the battery box cover 17 with the observation port 17a onto the base plate 2. The top pressing component A has an extension plate 7a extending vertically downward, and the extension plate 7a is used to press the flanges 17b of the remaining three sides of the battery box cover 17 onto the base plate 2.

[0029] By means of the horizontal plugging assembly and the core seat, when the top pressing assembly A presses the battery box cover 17 to be tested tightly against the top of the substrate 2, the observation port 17a can be blocked between the baffle 4a and the supporting baffle 22, thereby facilitating the airtightness test of the battery box cover 17 with the observation port 17a. The edge pressing assembly B and the extension plate 7a ensure that the flange 17b at the bottom of the battery box cover 17 can be pressed against the substrate 2, thereby ensuring the airtightness of the inside of the battery box cover 17 and facilitating the airtightness test.

[0030] like Figure 6 As shown, in this embodiment, the horizontal blocking component is a first telescopic cylinder 4 horizontally arranged at the front side of the upper end of the base plate 2, the baffle 4a is fixedly mounted on the end of the cylinder rod of the first telescopic cylinder 4, and a circle of sealing gasket 14 is fixedly mounted on one side of the baffle 4a close to the battery box cover 17, and the sealing gasket 14 is used to be close to the side of the battery box cover 17. The sealing gasket 14 ensures that the observation port 17a is more completely blocked, thereby facilitating the airtightness detection of the battery box cover 17.

[0031] In addition, a circle of sealing gasket 14 is also provided on one side of the support baffle 22 close to the observation port 17a. During the actual air tightness test, the inner and outer sides of the observation port 17a are tightly attached to the sealing gasket 14, which ensures that the observation port 17a can be blocked.

[0032] Further, such as Figure 3 As shown, a circle of sealing gasket 14 is also provided on the top of the substrate 2, and the flange 17b at the bottom of the battery box cover 17 is supported on the sealing gasket 14, so as to ensure that the battery box cover 17 to be tested can be pressed tightly on the top of the substrate 2, thereby ensuring the accuracy of the airtightness test.

[0033] Specifically, Figure 1 and Figure 6 As shown, the edge pressing assembly B includes a second telescopic cylinder 5 vertically installed at the lower end of the front side of the base plate 2. The cylinder rod of the second telescopic cylinder 5 penetrates the base plate 2 upward, and a pressing plate 5a is fixedly installed on the top thereof. The pressing plate 5a is used to press the flange 17b of the battery box cover 17 with the observation port 17a on the side thereof onto the base plate 2.

[0034] Furthermore, the edge pressing assembly B also includes a second slide rail 11 fixedly installed at the bottom of the front end of the substrate 2, the second slide rail 11 is arranged along the length direction of the base 1, and a second slider 12 is slidably installed on the second slide rail 11. The second telescopic cylinder 5 is fixedly installed on the second slider 12, and a fifth telescopic cylinder 13 is horizontally installed at the front end of the substrate 2. The cylinder rod end of the fifth telescopic cylinder 13 is connected to the second slider 12, and the fifth telescopic cylinder 13 is driven to retract, so that the pressing plate 5a can be close to or away from the battery box cover 17 to be inspected in the front and rear directions. By adjusting the position of the pressing plate 5a forward and backward, it is ensured that the flange 17b on the side of the battery box cover 17 with the observation port 17a can be pressed tightly on the substrate 2. In this embodiment, two second slide rails 11 are fixedly installed at the bottom of the base plate 2, a connecting block 18 is connected between the two second sliders 12, the second telescopic cylinder 5 is fixedly installed at the bottom of the connecting block 18, the cylinder rod end of the fifth telescopic cylinder 13 is fixedly connected to the connecting block 18, and an avoidance groove 2a is also provided at the front end of the base plate 2. The avoidance groove 2a can avoid motion interference between the cylinder rod of the second telescopic cylinder 5 and the base plate 2 when the fifth telescopic cylinder 13 is extended or retracted.

[0035] In this embodiment, two sets of edge mounting components B are provided, and the first telescopic cylinder 4 is fixedly installed between the two sets of edge pressing components B. Such a design further ensures that the flange 17b of the battery box cover 17 with the observation port 17a can be pressed against the substrate 2, thereby ensuring the accuracy of the airtightness detection.

[0036] like Figure 5 As shown, the top pressing assembly A includes a third telescopic cylinder 6 vertically installed on the top of the gantry bracket 3, and a rectangular cover plate 7 is fixedly installed on the lower end of the third telescopic cylinder 6. The rectangular cover plate 7 can be pressed downwardly against the top of the battery box cover 17 to ensure that no bulge will be generated on the top of the battery box cover 17 to be tested during the airtightness test, and the extension plate 7a is formed on the circumferential edge of the rectangular cover plate 7.

[0037] In order to ensure that the top of the battery box cover 17 to be tested is evenly pressed by the rectangular cover plate 7, in this embodiment, six third telescopic cylinders 6 are evenly distributed on the top of the gantry bracket 3. Linear bearings 19 are symmetrically installed on the front and rear sides of the top of the gantry bracket 3, and guide rods 20 are symmetrically installed on the front and rear sides of the top of the rectangular cover plate 7. The guide rods 20 are inserted into the linear bearings 19, so as to ensure that the rectangular cover plate 7 as a whole always moves vertically upward without tilting.

[0038] like Figure 4 As shown, two first slide rails 8 are arranged in parallel on the base 1 along its length direction, and first sliders 9 are slidably mounted on the first slide rails 8. The base plate 2 is fixedly mounted on the top of the first sliders 9. A fourth telescopic cylinder 10 is installed on the base 1 along its length direction. The fourth telescopic cylinder 10 is arranged between the two first slide rails 8, and the cylinder rod end of the fourth telescopic cylinder 10 is fixedly mounted on the bottom of the base plate 2. With such a design, the base plate 2 can slide on the base 1.

[0039] like Figure 4 As shown, a limit stop pin 15 is fixedly installed at the rear end of the base 1, and the limit stop pin 15 can limit the sliding position of the base plate 2, thereby ensuring that the top pressing component A can accurately cover the battery box cover 17 to be tested.

[0040] For example Figure 3 As shown, limit blocks 16 are symmetrically installed on the left and right sides of the substrate 2, and the battery box cover 17 to be detected is placed between the limit blocks 16 on both sides, so as to ensure that the battery box cover 17 is placed more accurately.

[0041] In this embodiment, a vent hole is provided in the middle of the substrate 2 , and the lower end of the vent hole is connected to the air intake device and the measuring device through an air pipe, so as to realize the air tightness detection of the battery box cover 17 .

[0042] like Figure 1 As shown, rollers 23 are fixedly installed at the four corners of the bottom of the base 1, and the rollers 23 can facilitate the movement of the entire airtight testing equipment.

[0043] Based on the above structure, the specific use process of the airtight test equipment is as follows:

[0044] In the initial state, the substrate 2 is located at the front end of the base 1, and the staff sets the cover of the battery box cover 17 to be tested on the support block 21 and the support baffle 22 of the substrate 2. The set limit block 16 can limit the left and right positions of the battery box cover 17, while the support block 21 and the support baffle 22 can limit the front and rear positions of the battery box cover 17; then the fourth telescopic cylinder 10 pushes the substrate 2 to slide backward until the rear end of the substrate 2 abuts against the limit stop pin 15; then the third telescopic cylinder 6 pushes the rectangular cover plate 7 to press on the top of the battery box cover 17 to be tested, and the extension plate 7a presses the flanges 17b of the other three side surfaces except the side where the observation port 17a is located against the sealing gasket 14 on the substrate 2, and the set support block 21 can support the top surface of the battery box cover 17 to be tested; then the third telescopic cylinder 6 pushes the rectangular cover plate 7 to press on the top of the battery box cover 17 to be tested, and the extension plate 7a presses the flanges 17b of the other three side surfaces except the side where the observation port 17a is located against the sealing gasket 14 on the substrate 2, and the set support block 21 can support the top surface of the battery box cover 17 to be tested; The four telescopic cylinders 10 push the second telescopic cylinder 5 to move backward as a whole to the bottom circumferential edge on the side where the observation port 17a is located; then the second telescopic cylinder 5 contracts to move the pressure plate 5a downward and press the flange 17b on the side where the observation port 17a is located against the sealing gasket 14 on the base plate 2; then the first telescopic cylinder 4 pushes the baffle 4a to move backward until the side of the battery box cover 17 with the observation port 17a is supported between the baffle 4a and the supporting baffle 22, at which time, the observation port 17a is also blocked between the baffle 4a and the supporting baffle 22; finally, the battery box cover 17 with the observation port 17a can be ventilated through the vent hole in the middle of the bottom of the base plate 2 to perform an air tightness test on the battery box cover 17; when the air tightness test is completed, the base plate 2 only needs to be returned to the front end of the base 1 to facilitate the removal of the battery box cover 17.

[0045] The combined support between the baffle 4a and the supporting baffle 22 ensures that the observation port 17a can be blocked, and the combined design of the extension plate 7a and the pressure plate 5a enables the flange 17b at the bottom of the battery box cover 17 to be pressed against the top of the substrate 2. The rectangular cover plate 7 avoids bulging on the top of the battery box cover 17 to be tested during the airtightness test. Based on the above design, the battery box cover 17 with the observation port 17a can be tested for airtightness.

[0046] Finally, it should be noted that the above description is only a preferred embodiment of the present invention. Under the guidance of the present invention, ordinary technicians in this field can make various similar expressions without violating the purpose and claims of the present invention, and such changes all fall within the scope of protection of the present invention.

Claims

1. A device for testing the airtightness of a box cover with a side observation window, comprising a base (1), a substrate (2) being slidably arranged on the base (1) along its length direction, a core seat adapted to the inner cavity of the battery box cover being fixedly arranged on the substrate (2), and being used to position and place the battery box cover to be tested, a gantry bracket (3) being arranged at one end in the length direction of the base (1), a top pressing assembly (A) being arranged at the upper end of the gantry bracket (3), when the substrate (2) carrying the battery box cover to be tested moves to the bottom of the gantry bracket (3), the top pressing assembly (A) can press the battery box cover to be tested tightly against the top of the substrate (2), characterized in that: A horizontal blocking component is installed at one end of the substrate (2) in the sliding direction, and the horizontal blocking component has a baffle (4a) that can move along the sliding direction of the substrate (2); when the battery box cover to be inspected is positioned and placed on the core seat, the baffle (4a) is driven to move along the sliding direction of the substrate (2), so that the baffle (4a) can block the observation port on the side of the battery box cover to be inspected; The core seat comprises a support block (21) and a support baffle (22) fixedly arranged on the top of the base plate (2), the support block (21) being used to support the top of the battery box cover, and the support baffle (22) being used to block the observation port on the side of the battery box cover; The substrate (2) is provided with an edge pressing assembly (B) on one side of the horizontal blocking assembly, and the edge pressing assembly (B) is used to press the bottom flange of the side of the battery box cover with the observation port onto the substrate (2); The top pressing assembly (A) has an extension plate (7a) extending vertically downward, and the extension plate (7a) is used to press the remaining three bottom flanges of the battery box cover onto the base plate (2).

2. The airtightness testing device for detecting a box cover with a side observation window according to claim 1, characterized in that: The horizontal blocking component is a first telescopic cylinder (4) horizontally arranged on the base plate (2); the baffle (4a) is fixedly mounted on the end of the cylinder rod of the first telescopic cylinder (4); a circle of sealing gasket (14) is provided on the side of the baffle (4a) close to the battery box cover to be detected; the sealing gasket (14) is used to closely adhere to the side of the battery box cover to be detected.

3. The airtightness testing device for detecting a box cover with a side observation window according to claim 1, characterized in that: The edge pressing assembly (B) comprises a second telescopic cylinder (5) vertically arranged, a pressing plate (5a) being arranged at the end of the cylinder rod of the second telescopic cylinder (5), and the pressing plate (5a) is used to press the bottom flange of one side of the battery box cover with the observation port onto the base plate (2).

4. The airtightness testing device for detecting a box cover having a side observation window according to claim 1, characterized in that: The top pressing assembly (A) comprises a third telescopic cylinder (6) vertically arranged on the top of the gantry bracket (3); a rectangular cover plate (7) is arranged at the lower end of the third telescopic cylinder (6); the rectangular cover plate (7) can be pressed downward against the top of the battery box cover to be tested; and the extension plate (7a) is formed on the circumferential edge of the rectangular cover plate (7).

5. The airtightness testing device for detecting a box cover having a side observation window according to claim 3, characterized in that: Two first slide rails (8) are arranged in parallel on the base (1) along its length direction, and first sliders (9) are slidably arranged on each of the first slide rails (8), and the base plate (2) is fixedly arranged on the top of the first sliders (9); A fourth telescopic cylinder (10) is provided on the base (1) along its length direction, and the cylinder rod end of the fourth telescopic cylinder (10) is fixedly connected to the base plate (2).

6. The airtightness testing device for detecting a box cover having a side observation window according to claim 5, characterized in that: The edge pressing assembly (B) further comprises a second slide rail (11) arranged at the bottom of the base plate (2), the second slide rail (11) being arranged in parallel with the first slide rail (8), a second slider (12) being slidably arranged on the second slide rail (11), the second telescopic cylinder (5) being fixed on the second slider (12), a fifth telescopic cylinder (13) being arranged horizontally on the base plate (2), the cylinder rod end of the fifth telescopic cylinder (13) being connected to the second slider (12), and driving the fifth telescopic cylinder (13) can force the pressing plate (5a) to move horizontally closer to or farther away from the battery box cover to be detected.

7. The airtightness testing device for detecting a box cover having a side observation window according to claim 6, characterized in that: The edge pressing components (B) are provided in two groups, and the horizontal blocking component is provided between the two groups of the edge pressing components (B).

8. The airtightness testing device for detecting a box cover having a side observation window according to claim 1, characterized in that: Position limiting blocks (16) are provided on both sides of the substrate (2) in the width direction, and the battery box cover to be detected is arranged between the position limiting blocks (16) on both sides.

9. The airtightness testing device for detecting a box cover with a side observation window according to claim 1, characterized in that: A roller (23) is provided at the bottom of the base (1).

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