Auxiliary device for detecting air tightness of battery

Abstract

The utility model provides a battery air tightness detection auxiliary device which comprises an upper support and a lower support which are installed in a mutually stacked mode, the lower support is provided with a conveying mechanism for conveying a battery, a transverse plate is installed on the lower support, and the upper support is provided with an extrusion mechanism facing the conveying mechanism. According to the utility model, the battery can be conveyed between the upper support and the lower support, the contact surface, supporting the battery, of the conveyor belt can form a complete plane to support the battery, the battery is extruded on the conveyor belt and does not deform like a gap, the stability of the battery during air tightness detection is improved, and the accuracy of air tightness detection is further improved; the conveying belt can be supported by the transverse plate, the battery supporting stability of the conveying belt is improved, and meanwhile the conveying belt can form a straight plane for supporting the battery on the transverse plate.

Description

Technical Field

[0001] This utility model relates to the technical field of battery pack testing, and in particular to an auxiliary device for testing the airtightness of batteries. Background Technology

[0002] Currently, after battery pack production, the batteries need to undergo airtightness testing. During the airtightness testing process, the battery pack cover bulges under pressure, requiring pre-installed clamping fixtures on top of the battery pack. In actual production, the clamping mechanism on top needs to be manually lifted out, the battery placed on the worktable, and the clamping mechanism installed on the worktable to perform an airtightness test on a single battery. When placing the battery on the worktable, hoisting may be used to move the battery, which causes inconvenience in battery transportation. Alternatively, a roller conveyor may be used to transport the battery, but there will be a gap between the two rollers, leaving the battery suspended. This may cause the battery to be squeezed and deformed during pressing, which will cause inconvenience to the test. Utility Model Content

[0003] The technical problem to be solved by this utility model is to provide an auxiliary device for battery airtightness testing to solve the problem of inconsistent battery airtightness testing.

[0004] Based on the technical problems existing in the background art, this utility model proposes a battery airtightness testing auxiliary device, including an upper support and a lower support that are stacked on each other. The lower support is equipped with a conveying mechanism for conveying batteries. A horizontal plate is installed on the lower support. The conveyor belt of the conveying mechanism can be spliced ​​on the horizontal plate to form a complete plate supporting the battery. The upper support is equipped with a pressing mechanism facing the conveying mechanism.

[0005] Preferably, the conveying mechanism includes conveyor bars and drive wheels. The two ends of the multiple conveyor bars are rotatably connected to form a conveyor belt. The drive wheel is rotatably mounted on the side of the lower support. A protruding shaft is installed at the rotatable connection of two conveyor bars. The drive wheel is provided with a groove that meshes with the corresponding shaft. The rotation of the drive wheel relative to the lower support drives the conveyor belt to rotate through the shaft.

[0006] Preferably, the lower bracket is equipped with a drive mechanism, which is connected to the drive wheel gear.

[0007] Preferably, the rotatable connection of the conveyor bar is located on the inner ring of the conveyor belt.

[0008] Preferably, the extrusion mechanism includes a cylinder and an extrusion plate, the cylinder is connected to an upper support, and the extrusion plate is connected to the drive end of the cylinder.

[0009] Preferably, the bottom of the conveyor bar located above the horizontal plate abuts against the horizontal plate, and the conveyor bar can be spliced ​​above the horizontal plate to form a complete plate supporting the battery.

[0010] Preferably, the horizontal plate includes multiple support bars, which are fixed to the lower bracket by screws and spliced ​​together to form the horizontal plate.

[0011] Compared with the prior art, the battery airtightness testing auxiliary device proposed in this utility model adopts the above technical solution and achieves the following technical effects:

[0012] This invention can transfer the battery between the upper and lower supports. The contact surface of the conveyor belt supporting the battery can form a complete plane to support the battery. The battery will not deform like in the gaps after being squeezed on the conveyor belt, which increases the stability of the battery airtightness test and thus improves the accuracy of the airtightness test.

[0013] The conveyor belt in this invention can be supported by the horizontal plate, which improves the stability of the conveyor belt in supporting the battery. At the same time, the conveyor belt can form a straight plane on the horizontal plate to support the battery. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0015] Figure 2 This is a schematic diagram of the installation of the lower support of this utility model.

[0016] In the diagram: 1. Upper support; 2. Lower support; 3. Conveying mechanism; 4. Horizontal plate; 310. Conveyor belt; 5. Extrusion mechanism; 31. Conveyor bar; 32. Drive wheel; 33. Shaft column; 321. Slot; 34. Drive mechanism; 51. Cylinder; 52. Extrusion plate; 41. Support bar. Detailed Implementation

[0017] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection, an electrical connection, or a connection that allows communication between them; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0018] In this utility model, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0019] Example

[0020] Reference Figures 1-2 This utility model proposes a battery airtightness testing auxiliary device, including an upper support 1 and a lower support 2 that are stacked on top of each other. The upper support 1 is installed on top of the lower support 2 by bolts. The upper support 1 and the lower support 2 have space for placing batteries. A conveying mechanism 3 is installed on the lower support 2, which can transport batteries. A horizontal plate 4 is installed on the lower support 2. The conveyor belt 310 of the conveying mechanism 3 surrounds the horizontal plate 4. The upper half of the conveyor belt 310 can be supported on the horizontal plate 4, so that the conveyor belt 310 can provide rigid support for the battery. A compression mechanism 5 is installed on the upper support 1, which can compress the battery on the conveyor belt 310 and perform airtightness testing under these conditions.

[0021] In a specific embodiment, refer to Figure 1 , Figure 2 The conveying mechanism 3 includes conveyor bars 31 and drive wheels 32. The two ends of multiple conveyor bars 31 are rotatably connected to form a conveyor belt 310. The two ends of the conveyor bars 31 are rotatably connected to each other. After the conveyor bars 31 form the conveyor belt 310, the rotatable connection point of the conveyor bars 31 is located in the inner ring of the conveyor belt 310. There is no connection point of the conveyor bars 31 in the outer ring of the conveyor belt 310. When the conveyor bars 31 are on the horizontal plate 4, two conveyor bars 31 can be joined together. The conveyor bars 31 above the conveyor belt 310 can be closely attached to form a complete plate. At this time, the upper surface of the conveyor belt 310 provides full support for the battery. Its support for the battery will not have sharp edges or gaps. When the extrusion mechanism 5 extrudes the battery, the battery will not expand into the gaps under extrusion, which can improve the accuracy of the battery airtightness detection.

[0022] In a specific embodiment, refer to Figure 1 , Figure 2The drive wheel 32 is rotatably mounted on the side of the lower support 2. A protruding shaft 33 is installed at the rotatable connection of the two conveyor bars 31. Multiple slots 321 are provided circumferentially on the drive wheel 32. The slots 321 can mesh with the shaft 33. When the drive wheel 32 rotates, it will drive the shaft 33 meshing on the drive wheel 32 to rotate. At this time, the shaft 33 will drive the conveyor bar 31 to move.

[0023] In a specific embodiment, refer to Figure 1 , Figure 2 The bottom of the conveyor bar 31 located above the horizontal plate 4 abuts against the horizontal plate 4. There are multiple conveyor bars 31, and the conveyor bars 31 on the upper surface of the horizontal plate 4 are always in contact with the horizontal plate 4. At this time, the conveyor bars 31 can be supported on the horizontal plate 4. Therefore, the entire conveyor bar 31 on the horizontal plate 4 can be supported. When supporting the battery, the battery will not have a support void, and the battery will not be deformed by compression. The conveyor bar 31 can form a plane supporting the battery on the upper surface of the horizontal plate 4, which fully supports the battery. Furthermore, the width of the horizontal plate 4 is less than the distance between the rotating joints at both ends of the conveyor bar 31. When the conveyor bar 31 moves on the horizontal plate 4, the rotating joints of the conveyor bar 31 will not contact the horizontal plate 4, avoiding the phenomenon that the middle area of ​​the conveyor bar 31 is not supported by the horizontal plate 4.

[0024] In a specific embodiment, refer to Figure 1 , Figure 2 The lower support 2 is equipped with a drive mechanism 34, which is connected to the drive wheel 32 by gears. The drive mechanism 34 is a motor, and the drive end of the motor is engaged with the rotating wheel by gears. The diameter of the motor gear is smaller than the diameter of the drive wheel 32, which can reduce the transmission speed of the conveyor belt 310 and increase the operating space for personnel.

[0025] In a specific embodiment, refer to Figure 1 , Figure 2 The rotating connection of the conveyor bar 31 is located on the inner ring of the conveyor belt 310. This prevents the battery from being pushed up and damaged by the protrusion of the conveyor bar 31.

[0026] In a specific embodiment, refer to Figure 1 , Figure 2 The extrusion mechanism 5 includes a cylinder 51 and an extrusion plate 52. The cylinder 51 is connected to the upper support 1, and the extrusion plate 52 is connected to the drive end of the cylinder 51. The cylinder 51 is mounted on the upper support 1, and the drive end of the cylinder 51 is welded and fixed to the extrusion plate 52. There are multiple cylinders 51. The connection between the cylinder 51 and the extrusion plate 52 can ensure that the extrusion plate 52 does not tilt. The cylinder 51 drives the extrusion plate 52 to move towards the conveyor belt 310. The extrusion plate 52 will extrude the battery on the conveyor belt 310, so that the battery can be tested for air tightness under the extrusion state.

[0027] In a specific embodiment, refer to Figure 1 , Figure 2 The horizontal plate 4 includes multiple support bars 41. The support bars 41 are fixed to the lower bracket 2 by screws and spliced ​​into the horizontal plate 4. In this application, the horizontal plate 4 may be bent and deformed after being squeezed multiple times. Therefore, the horizontal plate 4 can be separated into multiple support bars 41. After the support bars 41 are bent, they can be replaced individually to improve convenience and economy.

[0028] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A battery airtightness testing auxiliary device, characterized in that, It includes an upper bracket (1) and a lower bracket (2) that are stacked on top of each other. The lower bracket (2) is equipped with a battery transfer mechanism (3). A horizontal plate (4) is installed on the lower bracket (2). The upper bracket (1) is equipped with a pressing mechanism (5) facing the transfer mechanism (3).

2. The battery airtightness testing auxiliary device according to claim 1, characterized in that, The conveying mechanism (3) includes a conveyor bar (31) and a drive wheel (32). The two ends of the multiple conveyor bars (31) are rotatably connected to form a conveyor belt (310). The drive wheel (32) is rotatably mounted on the side of the lower support (2). A protruding shaft (33) is installed at the rotatable connection of two conveyor bars (31). The drive wheel (32) is provided with a groove (321) that meshes with the corresponding shaft (33). The drive wheel (32) rotates relative to the lower support (2) and drives the conveyor belt (310) to rotate through the shaft (33).

3. The battery airtightness testing auxiliary device according to claim 2, characterized in that, The lower bracket (2) is equipped with a drive mechanism (34), which is geared to the drive wheel (32).

4. The battery airtightness testing auxiliary device according to claim 2, characterized in that, The rotating connection of the conveyor bar (31) is located on the inner ring of the conveyor belt (310).

5. The battery airtightness testing auxiliary device according to claim 1, characterized in that, The extrusion mechanism (5) includes a cylinder (51) and an extrusion plate (52). The cylinder (51) is connected to the upper support (1), and the extrusion plate (52) is connected to the drive end of the cylinder (51).

6. The battery airtightness testing auxiliary device according to claim 2, characterized in that, The bottom of the conveyor strip (31) located above the horizontal plate (4) abuts against the horizontal plate (4), and the conveyor strip (31) can be spliced ​​above the horizontal plate (4) to form a complete plate supporting the battery.

7. The battery airtightness testing auxiliary device according to claim 1, characterized in that, The horizontal plate (4) includes multiple support bars (41), which are fixed to the lower bracket by screws and spliced ​​into the horizontal plate (4).

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