CN221925486U - An airtight inspection tool with special-shaped silicone - Google Patents

Abstract

The utility model relates to the technical field of airtight detection tools for battery cases, in particular to an airtight detection tool with special-shaped silica gel, which comprises a frame, a workbench connected to the top of the frame, a compression unit connected to the periphery of the workbench, annular sealing silica gel arranged around the workbench and an airtight filling box connected to the middle part of the workbench, wherein when the airtight detection tool is used, the battery case is arranged on the workbench, and a plurality of avoidance grooves of the annular sealing silica gel are in one-to-one correspondence with rivets of the battery case, so that the periphery of the battery case is in sealing fit with the annular sealing silica gel, and the generation of gaps between the battery case and the annular sealing silica gel to leak air is avoided, thereby being beneficial to guaranteeing the accuracy of detecting the air tightness of the battery case; in addition, the middle part of the workbench is filled with the airtight filling box, which is beneficial to reducing the inflation amount during the air tightness detection and reducing the energy consumption.

Description

An airtight inspection tool with special-shaped silicone

Technical Field

The utility model relates to the technical field of battery shell airtightness inspection tools, in particular to an airtightness inspection tool with special-shaped silica gel.

Background Art

The new energy vehicle battery shell airtightness test equipment is a device used to test the sealing performance of the battery shell to ensure that the battery shell will not leak under normal working conditions. This testing equipment usually uses air pressure or vacuum testing to apply a certain air pressure or vacuum degree to the battery shell, and then detects the pressure change or gas flow in the shell to determine the sealing performance of the battery shell.

Most existing battery shells have raised rivets on the edges. After being pressed onto the sealing silicone, there is a gap between the raised rivets and the sealing silicone that is difficult to smooth out, which leads to leakage problems during the airtightness detection process, greatly reducing the test accuracy and making it difficult to meet the test requirements.

Summary of the invention

In order to overcome the shortcomings and deficiencies in the prior art, the utility model aims to provide an airtight inspection tool with special-shaped silica gel.

The purpose of the utility model is achieved through the following technical scheme: an airtight inspection fixture with special-shaped silicone, comprising a frame, a workbench connected to the top of the frame, a pressing unit connected to the periphery of the workbench, an annular sealing silicone surrounded by the workbench, and a closed filling box connected to the middle of the workbench, the pressing unit is used to press the battery shell, the outer edge of the annular sealing silicone is provided with a plurality of avoidance grooves for avoiding battery shell rivets, and the annular sealing silicone is used to seal and fit with the periphery of the battery shell.

Preferably, the pressing unit comprises a plurality of strong clamping cylinders distributed around the periphery of the workbench, and the plurality of strong clamping cylinders are used together to press the battery shell.

Preferably, the airtight inspection fixture further comprises a pressing plate disposed on the top of the closed filling box and used to press the battery shell, and a plurality of strong clamping cylinders are used together to press the battery shell and the pressing plate.

Preferably, the workbench is provided with an annular groove for the annular sealing silicone to be snap-fitted.

Preferably, the airtight inspection fixture further comprises a plurality of battery shell guide blocks connected to the periphery of the workbench.

Preferably, the airtight inspection fixture further comprises a connecting flange connected to the bottom of the workbench, and a lifting cylinder connected to the bottom of the connecting flange, the workbench is provided with a clearance hole connected to the connecting flange, and the output end of the lifting cylinder passes through the connecting flange and extends into the clearance hole.

Preferably, the workbench is provided with an inflation hole for connecting an inflation tube.

Preferably, the airtight inspection fixture further includes a drainage channel arranged around the workbench, and a drainage groove communicated with the drainage channel.

The beneficial effects of the utility model are as follows: the airtight inspection fixture with special-shaped silicone of the utility model adopts a frame, a workbench connected to the top of the frame, a pressing unit connected to the periphery of the workbench, an annular sealing silicone surrounded by the workbench, and a closed filling box connected to the middle of the workbench; when in use, the battery shell is placed on the workbench, and a plurality of avoidance grooves of the annular sealing silicone correspond to and avoid the battery shell rivets one by one, so that the periphery of the battery shell is sealed and fitted with the annular sealing silicone, avoiding the formation of a gap between the battery shell and the annular sealing silicone and air leakage, which is beneficial to ensuring the accuracy of the airtight inspection fixture in detecting the airtightness of the battery shell; in addition, the closed filling box is filled in the middle of the workbench, which is beneficial to reducing the amount of inflation during airtightness detection and reducing energy consumption.

BRIEF DESCRIPTION OF THE DRAWINGS

Fig. 1 is a schematic diagram of the structure of the utility model;

FIG2 is a schematic structural diagram of the utility model from another perspective;

FIG3 is a schematic diagram of the structure of the annular sealing silica gel of the utility model;

The accompanying drawings are marked as follows: 1. frame; 2. workbench; 3. pressing unit; 31. strong clamping cylinder; 4. annular sealing silicone; 5. closed filling box; 6. avoidance groove; 7. pressing plate; 8. battery shell guide block; 9. connecting flange; 10. lifting cylinder; 11. make way hole; 12. inflation hole; 13. drainage channel; 14. drainage groove.

DETAILED DESCRIPTION

In order to facilitate the understanding of those skilled in the art, the present invention is further described below in conjunction with embodiments and drawings. The contents mentioned in the implementation modes are not intended to limit the present invention.

As shown in Fig. 1-3, an airtight inspection fixture with special-shaped silicone comprises a frame 1, a workbench 2 connected to the top of the frame 1, a pressing unit 3 connected to the periphery of the workbench 2, an annular sealing silicone 4 arranged around the workbench 2, and a closed filling box 5 connected to the middle of the workbench 2, wherein the pressing unit 3 is used for pressing the battery shell, and the outer edge of the annular sealing silicone 4 is provided with a plurality of avoidance grooves 6 for avoiding battery shell rivets, and the annular sealing silicone 4 is used for sealing and fitting with the periphery of the battery shell.

The airtight inspection tool with special-shaped silicone comprises a frame 1, a workbench 2 connected to the top of the frame 1, a pressing unit 3 connected to the periphery of the workbench 2, an annular sealing silicone 4 arranged around the workbench 2, and a closed filling box 5 connected to the middle of the workbench 2. When in use, the battery shell is placed on the workbench 2, and a plurality of avoidance grooves 6 of the annular sealing silicone 4 correspond to the battery shell rivets one by one, so that the periphery of the battery shell is sealed and fitted with the annular sealing silicone 4, avoiding the formation of a gap between the battery shell and the annular sealing silicone 4 and air leakage, which is beneficial to ensuring the accuracy of the airtight inspection tool in detecting the airtightness of the battery shell; in addition, the closed filling box 5 is filled in the middle of the workbench 2, which is beneficial to reducing the amount of gas filled during airtightness detection and reducing energy consumption.

Furthermore, the pressing unit 3 includes a plurality of strong clamping cylinders 31 distributed around the periphery of the workbench 2, and the plurality of strong clamping cylinders 31 are used together to press the battery shell.

Furthermore, the airtight inspection fixture further includes a pressing plate 7 disposed on the top of the airtight filling box 5 and used to press the battery shell, and a plurality of strong clamping cylinders 31 are used together to press the battery shell and the pressing plate 7. When in use, the plurality of strong clamping cylinders 31 press the battery shell and the pressing plate 7 together to press the battery shell, while at the same time, under the action of the pressing plate 7, the battery shell is prevented from being deformed outward by the air pressure of the airtight inspection.

Furthermore, the workbench 2 is provided with an annular groove (not shown in the figure) for the annular sealing silicone 4 to engage with, so as to prevent the annular sealing silicone 4 from being out of position and affecting the sealing requirements.

Furthermore, the airtight inspection fixture further comprises a plurality of battery shell guide blocks 8 connected to the periphery of the workbench 2, so as to guide the battery shell to be loaded into the airtight inspection fixture, thereby improving installation efficiency.

Furthermore, the airtight inspection fixture further includes a connecting flange 9 connected to the bottom of the workbench 2, and a lifting cylinder 10 connected to the bottom of the connecting flange 9. The workbench 2 is provided with a clearance hole 11 connected to the connecting flange 9, and the output end of the lifting cylinder 10 passes through the connecting flange 9 and extends into the clearance hole 11. When in use, the lifting cylinder 10 is used to lift the battery shell so that the battery shell can be taken and placed.

Furthermore, the workbench 2 is provided with an inflation hole 12 for connecting an inflation tube. When the airtightness test is performed after the battery shell is installed, the external inflation tube is connected to the inflation hole 12 to inflate the gap between the airtight inspection fixture and the battery shell through the inflation hole 12.

Furthermore, the airtight inspection fixture further includes a drainage channel 13 surrounding the workbench 2, and a drainage groove 14 connected to the drainage channel 13. During the airtight inspection, if there is a leak, the battery shell needs to be fully inspected with bubble water to screen out the leak location, and the outflowing bubble water is concentratedly drained by the drainage channel 13 and the drainage groove 14 to prevent the bubble water from overflowing into other parts and causing damage.

The above embodiments are preferred implementation schemes of the present invention. In addition, the present invention can also be implemented in other ways. Any obvious replacement without departing from the concept of the present invention is within the protection scope of the present invention.

Claims (8)

1. An airtight inspection fixture with special-shaped silicone, characterized in that it includes a frame, a workbench connected to the top of the frame, a pressing unit connected to the periphery of the workbench, an annular sealing silicone surrounding the workbench, and a closed filling box connected to the middle of the workbench, the pressing unit is used to press the battery shell, the outer edge of the annular sealing silicone is provided with a plurality of avoidance grooves for avoiding battery shell rivets, and the annular sealing silicone is used to seal and fit with the periphery of the battery shell. 2. An airtight inspection fixture with special-shaped silicone according to claim 1, characterized in that: the pressing unit includes a plurality of strong clamping cylinders distributed around the periphery of the workbench, and the plurality of strong clamping cylinders are used together to press the battery shell. 3. An airtight inspection fixture with special-shaped silicone according to claim 2, characterized in that: the airtight inspection fixture also includes a pressing plate arranged on the top of the closed filling box and used to press the battery shell, and multiple strong clamping cylinders are used together to press the battery shell and the pressing plate. 4. The airtight inspection tool with special-shaped silicone according to claim 1, characterized in that: the workbench is provided with an annular groove for the annular sealing silicone to be snap-fitted. 5. The airtight inspection fixture with special-shaped silicone according to claim 1, characterized in that the airtight inspection fixture further comprises a plurality of battery shell guide blocks connected to the periphery of the workbench. 6. An airtight inspection fixture with special-shaped silicone according to claim 1, characterized in that: the airtight inspection fixture also includes a connecting flange connected to the bottom of the workbench, and a lifting cylinder connected to the bottom of the connecting flange, the workbench is provided with a clearance hole connected to the connecting flange, and the output end of the lifting cylinder passes through the connecting flange and extends into the clearance hole. 7. The airtight inspection tool with special-shaped silicone according to claim 1, characterized in that: the workbench is provided with an inflation hole for connecting an inflation tube. 8. The airtight inspection fixture with special-shaped silicone according to claim 1, characterized in that the airtight inspection fixture further comprises a drainage channel surrounding the workbench and a drainage groove connected to the drainage channel.