Sealing rubber nail structure

Abstract

The utility model provides a sealing rubber nail structure, which relates to the technical field of sealing rubber nails and comprises a liquid injection channel reserved in a battery cell, an annular extension edge arranged in the liquid injection channel, a plug cap arranged above the annular extension edge, a plug body connected to the bottom surface of the plug cap through a connector, and an interlayer arranged between the connector and the annular extension edge. And a diversion trench communicated with the interlayer and the lower part of the annular extension edge is radially arranged at the upper end of the plug body from the outer side wall to the center of the plug body. According to the utility model, a gap for communicating the inner wall of the battery cell with the external part can be kept under the condition that the plug body is not completely plugged, and the condition of blocking can be avoided when air is pumped from the interior of the battery cell; the whole sealing glue nail can be prevented from being sucked away from a liquid injection opening of the battery cell, and the air suction efficiency of the battery cell in the liquid injection process can be improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of sealing glue nail, especially a sealing glue nail structure. BACKGROUND

[0002] The present stage's electric core contains positive pole negative pole material and electrolyte, wherein the inside of the electric core needs to be injected through the liquid injection port, the operation chamber carries out a secondary supplement process to the electrolyte, and the secondary liquid injection port needs to consider the sealing effect during the injection process, and the common mode is to seal through the rubber plug, since the rubber plug is columnar, when the rubber plug is inserted into the sealing port, it may cause blockage during vacuum extraction, thereby causing the vacuum extraction to suck the rubber plug away from the sealing port, affecting the efficiency and progress of the vacuum extraction, and causing the problem of unstable secondary injection of the electric core. UTILITY MODEL CONTENTS

[0003] The utility model solves the technical problem that the rubber plug may cause the problem of unstable secondary injection of the electric core.

[0004] Based on the technical problems in the background art, the utility model provides a sealing glue nail structure, which comprises a liquid injection channel reserved in an electric core, an annular extension edge is arranged in the liquid injection channel, a plug cap is arranged above the annular extension edge, a plug body is connected to the bottom surface of the plug cap through a connecting body, there is a layer between the connecting body and the annular extension edge, a flow guide groove is arranged below the annular extension edge and in the connecting layer and radially towards the center of the plug body from the outer wall of the upper end of the plug body; after secondary injection of the electric core, the plug body is inserted into the liquid injection port, and then the electric core is vacuumed; the flow guide groove can provide more space for air suction when the plug body is half inserted into the liquid injection port, and the efficiency of air exhaust in the electric core can be improved.

[0005] Preferably, the lower surface of the plug cap and the upper surface of the annular extension edge have a gap during air exhaust, and the diameter of the plug cap is greater than the inner diameter of the annular extension edge; in this scheme, the gap between the lower surface of the plug cap and the annular extension edge can provide more air exhaust space during air exhaust, accelerate the air exhaust effect, and improve the overall air exhaust efficiency.

[0006] Preferably, the connecting body and the annular extension edge are in the same plane, and the connecting body is located in the annular extension edge; in this scheme, the two ends of the connecting body can connect the plug cap and the plug body, the length of the connecting body is the same as the thickness of the annular extension edge, and when the connecting body is located in the annular extension edge, the plug cap and the plug body can be clamped in the annular extension edge through the connecting body to avoid falling off.

[0007] Preferably, the plug body is shaped as an inverted column, and the outer wall of the plug body is provided with a gas guide layer between the plug body and the liquid injection channel, and the gas guide layer gradually decreases from bottom to top.

[0008] Preferably, the middle part of the plug body is provided with a cavity, and the cavity in the plug body helps to reduce the material of the whole device and save costs.

[0009] Preferably, the plug cap is provided with a guide hole with an opening upward, and the guide hole provides a guiding and positioning effect for the gas absorption and gas absorption, so that the personnel can quickly align the plug cap and exhaust the battery.

[0010] Preferably, the side edge of the upper end of the plug body is connected with a surrounding edge, and the diameter of the surrounding edge is greater than the inner diameter of the annular extension edge, and the surrounding edge is rolled upward and abuts against the inner ring wall of the annular extension edge during exhaust, and the surrounding edge is rolled upward when the whole device is inserted into the injection port, so as to increase the gap between the connecting body and the annular extension edge, and provide more flow guide space for the flow guide groove.

[0011] Preferably, the upper ring edge and the lower ring edge of the inner ring wall of the annular extension edge are both arc-shaped, and the plug body can be moved into the battery after liquid injection, so that the surrounding edge slides along the lower ring edge and restores deformation under the annular extension edge, and the upper surface of the surrounding edge abuts against the lower surface of the annular extension edge, and the plug body has a certain adsorption effect due to the negative pressure effect in the battery after the exhaust of the battery is completed, and the surrounding edge of the plug body can restore deformation in time, and the surrounding edge of the plug body can provide a limiting effect for the plug body.

[0012] Compared with the prior art, the sealing glue nail structure adopts the above technical scheme, and has the following technical effects:

[0013] The utility model can keep the gap between the inner wall of the plug body and the outer connection in the case that the plug body is not completely inserted, can avoid the plugging when the air in the battery is extracted, can prevent the whole sealing glue nail from being separated from the liquid injection port of the battery, and can improve the air absorption efficiency of the battery during liquid injection. ACCURACY

[0014] Figure 1 The state after the exhaust of the utility model;

[0015] Figure 2 The state before the exhaust of the utility model.

[0016] In the drawing: 100, liquid injection channel; 101, annular extension edge; 1, plug cap; 2, connecting body; 3, plug body; 4, interlayer; 31, flow guide groove; 5, gas guide layer; 11, guide hole; 32, surrounding edge. DETAILED DESCRIPTION

[0017] In the present application, unless otherwise expressly specified and limited, the terms "mounting", "connecting", "connecting", "fixing" and the like should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or it can be integrated; it can be mechanically connected, or it can be electrically connected or in communication with each other; it can be directly connected, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two elements or the interaction relationship between two elements, unless otherwise expressly limited. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0018] In the present application, unless otherwise expressly specified and limited, the first feature is "on" or "under" the second feature. The first and second features can be in direct contact, or the first and second features can be in indirect contact through an intermediate medium. Moreover, the first feature "above", "above" and "above" the second feature can be directly above or obliquely above the first feature, or only indicate that the horizontal height of the first feature is higher than that of the second feature. The first feature "below", "below" and "below" the second feature can be directly below or obliquely below the first feature, or only indicate that the horizontal height of the first feature is less than that of the second feature.

[0019] Embodiment

[0020] Please refer to Figures 1-2 The utility model provides a seal glue nail structure, including the liquid injection channel 100 reserved by the electric core, be provided with annular extension edge 101 in the liquid injection channel 100, be provided with the plug cap 1 above annular extension edge 101, the bottom surface of plug cap 1 is connected with plug body 3 through connecting body 2, and there is interlayer 4 between connecting body 2 and annular extension edge 101, the upper end of plug body 3 is provided with the flow guide groove 31 that is communicated interlayer 4 and the below of annular extension edge 101 radially towards plug body 3 center from the outside wall, in the present scheme, the electric core secondary liquid injection process is generally carried out in the liquid injection, then glue nail is inserted into the liquid injection, and glue nail and liquid injection are in semi-fixed state, at this time, glue nail and liquid injection have certain gap, when exhausting, the gas in the electric core can be exhausted through the gap between glue nail and liquid injection, under the action of flow guide groove 31, glue nail below annular extension edge 101, under the communication of flow guide groove 31, can make the electric core inside and outside have certain communication effect, can prevent the situation that the pressure difference of both ends of glue nail is too large during the exhausting process, glue nail is sucked away from the liquid injection, can improve the stability of glue nail installation and use.

[0021] In the specific embodiment, reference is made to Figure 2The lower surface of the plug cap 1 has a gap with the upper surface of the annular extension 101, and the diameter of the plug cap 1 is greater than the inner diameter of the annular extension 101; in this scheme, the entire plug is not completely inserted into the liquid injection port, and a certain gap is reserved between the lower surface of the plug cap 1 and the upper surface of the annular extension 101 to facilitate the flow of gas. The plug cap 1 can prevent the entire plug from being inserted into the liquid injection port, and has a certain limiting effect.

[0022] In specific embodiments, referring to Figure 1 、 Figure 2 The connecting body 2 is in the same plane as the annular extension 101, and the connecting body 2 is located in the annular extension 101. In this scheme, the connecting body 2 serves to connect the plug cap 1 and the plug body 3. When in use, the diameter of the connecting body 2 is less than the inner diameter of the annular extension 101, and can be located in the middle part of the connecting body 2, which can better facilitate the movement of the entire plug.

[0023] In specific embodiments, referring to Figure 2 The plug body 3 is in the shape of an inverted column, and the outer wall of the plug body 3 and the liquid injection channel 100 have a gas guide layer 5, which gradually decreases from bottom to top; in this scheme, the shape of the plug body 3 relative to the column can provide more space for the gas guide layer 5, and the gas can quickly gather in the gas guide layer 5, thereby accelerating the rate of gas removal.

[0024] In specific embodiments, referring to Figure 1 、 Figure 2 The middle part of the plug body 3 has a cavity, and the plug body 3 in this scheme reduces the use of materials by setting the cavity, thereby further saving the use of raw materials.

[0025] In specific embodiments, referring to Figure 1 The plug cap 1 has a guide hole 11 with an opening facing upward in the middle part, and in this scheme, the guide hole 11 on the plug cap 1 is located at the center, and the center of the air suction gun is provided with a protrusion, which can facilitate the quick alignment of the air suction gun and then perform air suction, thereby improving the overall efficiency.

[0026] In specific embodiments, referring to Figure 2 The side edge of the upper end of the plug body 3 is connected with a surrounding edge 32, and the diameter of the surrounding edge 32 is greater than the inner diameter of the annular extension 101. When the gas is discharged, the surrounding edge 32 is rolled upward and contacts the inner ring wall of the annular extension 101. In this scheme, the entire plug body 3 is made of rubber material, and when the plug is installed, the surrounding edge 32 will roll upward, and the surrounding edge 32 will be extruded with the annular extension 101, so that the gas is difficult to flow, and the gas can flow upward from the flow guide groove 31.

[0027] In specific embodiments, referring to Figure 1 Figure 2The upper ring edge and the lower ring edge of the ring wall in the annular extension edge 101 are arc-shaped. After liquid injection, the plug body 3 in the battery cell moves into the battery cell, the surrounding edge 32 slides along the lower ring edge and restores the deformation under the annular extension edge 101, and the upper surface of the surrounding edge 32 abuts against the lower surface of the annular extension edge 101. In the scheme, after the whole battery cell inhales air, the relative pressure in the battery cell is relatively reduced, the glue nails are attracted to move into the battery cell, the surrounding edge 32 can restore the deformation along the lower ring edge, at this time, the glue cap can be stably installed at the liquid injection port in cooperation with the plug cap 1, and the whole glue nail is attracted to the battery cell, and the glue cap is tightly attached to the upper ring edge to realize the sealing effect.

[0028] The above is only a preferred specific embodiment of the present application, but the protection scope of the present application is not limited to this. Any skilled person in the art can make equivalent replacement or change according to the technical scheme and the inventive concept of the present application within the technical range disclosed by the present application, which should be covered in the protection scope of the present application.

Claims

1. A sealant nail structure, comprising a liquid injection channel (100) reserved for an electric core, an annular extension (101) being arranged in the liquid injection channel (100), characterized in that, The upper part of the annular extension (101) is provided with a plug cap (1), the bottom surface of the plug cap (1) is connected with a plug body (3) through a connecting body (2), the connecting body (2) and the annular extension (101) have a sandwich layer (4) therebetween, and the upper end of the plug body (3) is provided with a flow guide groove (31) which communicates with the sandwich layer (4) and the lower part of the annular extension (101) and is radially arranged towards the center of the plug body (3) from the outer sidewall.

2. The sealant pin structure of claim 1, wherein When exhausting, the lower surface of the plug cap (1) has a gap with the upper surface of the annular extension (101), and the diameter of the plug cap (1) is greater than the inner diameter of the annular extension (101).

3. The sealant pin structure of claim 1, wherein The connecting body (2) is in the same plane with the annular extension (101), and the connecting body (2) is located in the annular extension (101).

4. The sealant bead structure of claim 1, wherein The plug body (3) is in the shape of an inverted column, the outer wall of the plug body (3) and the liquid injection channel (100) have a gas guide layer (5) therebetween, and the gas guide layer (5) gradually decreases from bottom to top.

5. The sealant pin structure of claim 1, wherein The middle part of the plug body (3) has a cavity.

6. The sealant pin structure of claim 1, wherein The plug cap (1) is provided with a guide hole (11) with an opening facing upwards in the middle part.

7. The sealant pin structure of claim 1, wherein The side edge of the upper end of the plug body (3) is connected with a surrounding edge (32), the diameter of the surrounding edge (32) is greater than the inner diameter of the annular extension (101), and when exhausting, the surrounding edge (32) is rolled upwards and abuts against the inner ring wall of the annular extension (101).

8. The sealant bead structure of claim 7, wherein, The upper ring edge and the lower ring edge of the inner ring wall of the annular extension (101) are both in the shape of an arc, after liquid injection, the plug body (3) can be absorbed to move into the battery cell, so that the surrounding edge (32) slides along the lower ring edge and restores deformation under the annular extension (101), and the upper surface of the surrounding edge (32) abuts against the lower surface of the annular extension (101).

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