阅读说明：本技术 电池密封装置 (Battery sealing device ) 是由 白宗亮 黄玉元 刘琦 郭磊斌 于 2020-12-28 设计创作，主要内容包括：本发明提供了一种电池密封装置,电池密封装置包括压环、连通头、密封外圈和密封内圈,压环可升降地设置,压环的下表面具有环形注液槽；连通头设置在压环上,连通头和环形注液槽连通；密封外圈设置在压环上,密封外圈在自然状态下其下表面低于压环的下表面；密封内圈设置在压环上,密封内圈位于密封外圈内,密封内圈在自然状态下其下表面低于压环的下表面,环形注液槽位于密封内圈和密封外圈围绕形成的环形区域内；其中,环形注液槽用于与电池的注液孔连通,压环的下表面、密封内圈的下表面和密封外圈的下表面均用于和电池的端面抵接,以密封环形注液槽。采用该方案,可提高操作效率,并且密封性好,避免了电解液外泄。(The invention provides a battery sealing device which comprises a pressure ring, a communication head, a sealing outer ring and a sealing inner ring, wherein the pressure ring is arranged in a lifting manner, and the lower surface of the pressure ring is provided with an annular liquid injection groove; the communicating head is arranged on the pressure ring and communicated with the annular liquid injection groove; the sealing outer ring is arranged on the pressure ring, and the lower surface of the sealing outer ring is lower than that of the pressure ring in a natural state; the sealing inner ring is arranged on the pressure ring, the sealing inner ring is positioned in the sealing outer ring, the lower surface of the sealing inner ring is lower than that of the pressure ring in a natural state, and the annular liquid injection groove is positioned in an annular region formed by the sealing inner ring and the sealing outer ring in a surrounding mode; the annular liquid injection groove is communicated with a liquid injection hole of the battery, and the lower surface of the pressing ring, the lower surface of the sealing inner ring and the lower surface of the sealing outer ring are used for being abutted against the end face of the battery to form the annular liquid injection groove. By adopting the scheme, the operation efficiency can be improved, the sealing performance is good, and the leakage of electrolyte is avoided.)

1. A battery sealing device, comprising:

the pressing ring (10) is arranged in a liftable mode, and an annular liquid injection groove (11) is formed in the lower surface of the pressing ring (10);

the communicating head (20) is arranged on the compression ring (10), and the communicating head (20) is communicated with the annular liquid injection groove (11);

the sealing outer ring (30) is arranged on the pressing ring (10), and the lower surface of the sealing outer ring (30) is lower than that of the pressing ring (10) in a natural state;

the sealing inner ring (40) is arranged on the pressing ring (10), the sealing inner ring (40) is located in the sealing outer ring (30), the lower surface of the sealing inner ring (40) is lower than that of the pressing ring (10) in a natural state, and the annular liquid injection groove (11) is located in an annular area formed by the sealing inner ring (40) and the sealing outer ring (30) in a surrounding mode;

the annular liquid injection groove (11) is communicated with a liquid injection hole of the battery, and the lower surface of the pressing ring (10), the lower surface of the sealing inner ring (40) and the lower surface of the sealing outer ring (30) are both used for being abutted against the end face of the battery to seal the annular liquid injection groove (11).

2. The battery sealing device according to claim 1,

an outer annular groove (12) is formed in the outer wall of the pressing ring (10), the sealing outer ring (30) comprises an outer ring body and an outer limiting ring arranged on the inner side of the outer ring body, and the outer limiting ring is clamped in the outer annular groove (12); and/or the presence of a gas in the gas,

the inner ring sealing structure is characterized in that an inner annular groove (13) is formed in the inner wall of the pressing ring (10), the sealing inner ring (40) comprises an inner ring body and an inner limiting ring arranged on the outer side of the inner ring body, and the inner limiting ring is clamped into the inner annular groove (13).

3. The battery sealing device of claim 1, further comprising:

the outer bundling sleeve (50) is sleeved on the compression ring (10), and the inner wall of the outer bundling sleeve (50) is matched with the outer wall of the sealing outer ring (30);

the inner bundling sleeve (60) penetrates through the compression ring (10), and the outer wall of the inner bundling sleeve (60) is matched with the inner wall of the sealing inner ring (40).

4. The cell sealing device according to claim 3, wherein said outer collar (50) is axially movably arranged with respect to said compression ring (10), and said inner collar (60) is axially movably arranged with respect to said compression ring (10), said cell sealing device further comprising:

elastic structure (70), set up on clamping ring (10), elastic structure (70) with outer collar (50), interior collar (60) cooperation, in order to right outer collar (50) with interior collar (60) applys decurrent elasticity.

5. The battery sealing device according to claim 4, wherein the elastic structure (70) comprises a connecting piece (71) and a first elastic sheet (72) and a second elastic sheet (73) which are arranged on the connecting piece (71), wherein the connecting piece (71) is fixedly connected with the pressing ring (10), the first elastic sheet (72) is abutted with the upper end of the outer collar (50), and the second elastic sheet (73) is abutted with the upper end of the inner collar (60).

6. The battery sealing device according to claim 5, wherein the upper surface of the pressing ring (10) is provided with a limiting groove (14), the connecting piece (71) is positioned in the limiting groove (14), and the side wall of the limiting groove (14) is matched with the side wall stop of the connecting piece (71).

7. The battery sealing arrangement according to claim 4, characterized in that the resilient structure (70) is plural, and the plural resilient structures (70) are distributed along the circumferential direction of the pressure ring (10).

8. The battery sealing device according to claim 3,

the outer wall of the compression ring (10) is provided with an outer annular step (15), the outer collar (50) comprises an outer sleeve body and an outer stop ring arranged on the inner side of the outer sleeve body, and the outer stop ring is matched with the outer annular step (15); and/or the presence of a gas in the gas,

have interior annular step (16) on the inner wall of clamping ring (10), interior bundle cover (60) are in including the inner casing body with the setting the interior backstop ring in the inner casing body outside, interior backstop ring with interior annular step (16) cooperation.

9. The battery sealing device according to claim 1, wherein the communication head (20) is arranged on the upper surface of the pressing ring (10) in a protruding manner, a channel for communicating the communication head (20) with the annular liquid injection groove (11) is arranged in the pressing ring (10), and an annular limiting convex rib is arranged on the outer wall of the communication head (20).

10. The battery sealing device according to claim 1, further comprising a bracket (80), wherein the bracket (80) is fixedly connected with the pressure ring (10), and the bracket (80) is used for connecting with a driving mechanism.

Technical Field

The invention relates to the technical field of battery liquid injection, in particular to a battery sealing device.

Background

Be provided with the cylinder lithium cell of annotating the liquid hole and annotate liquid and open the formation when, the notes liquid hole of battery need with annotate the liquid pipe (annotate the liquid mouth) or become the blast pipe and do sealed intercommunication (sealed when communicating promptly), otherwise will cause electrolyte to leak. The existing sealing mode needs the liquid injection hole of the battery to be aligned with a liquid injection pipe (liquid injection nozzle) or a formation exhaust pipe, the operation is complex, and the production efficiency is influenced.

Disclosure of Invention

The invention provides a battery sealing device, which is used for facilitating the sealing and communication of a liquid injection hole of a battery.

In order to achieve the above object, the present invention provides a battery sealing device comprising: the compression ring is arranged in a liftable mode, and an annular liquid injection groove is formed in the lower surface of the compression ring; the communicating head is arranged on the compression ring and communicated with the annular liquid injection groove; the sealing outer ring is arranged on the pressure ring, and the lower surface of the sealing outer ring is lower than that of the pressure ring in a natural state; the annular liquid injection groove is positioned in an annular area formed by the sealing inner ring and the sealing outer ring in a surrounding manner; the annular liquid injection groove is used for being communicated with a liquid injection hole of the battery, and the lower surface of the pressing ring, the lower surface of the sealing inner ring and the lower surface of the sealing outer ring are used for being abutted against the end face of the battery to seal the annular liquid injection groove.

Furthermore, an outer annular groove is formed in the outer wall of the compression ring, the sealing outer ring comprises an outer ring body and an outer limiting ring arranged on the inner side of the outer ring body, and the outer limiting ring is clamped into the outer annular groove; and/or, an inner ring groove is formed in the inner wall of the pressing ring, the sealing inner ring comprises an inner ring body and an inner limiting ring arranged on the outer side of the inner ring body, and the inner limiting ring is clamped into the inner ring groove.

Further, the battery sealing device further includes: the outer bundling sleeve is sleeved on the compression ring, and the inner wall of the outer bundling sleeve is matched with the outer wall of the sealing outer ring; and the inner bundling sleeve is arranged in the pressing ring in a penetrating way, and the outer wall of the inner bundling sleeve is matched with the inner wall of the sealing inner ring.

Further, the outer bundle of sheathes is set up for the clamping ring is axially movable, the inner bundle of sheathes is set up for the clamping ring is axially movable, the battery sealing device further includes: the elastic structure is arranged on the compression ring, and the elastic structure is matched with the outer collar and the inner collar so as to apply downward elasticity to the outer collar and the inner collar.

Furthermore, the elastic structure comprises a connecting piece, a first elastic piece and a second elastic piece, wherein the first elastic piece and the second elastic piece are arranged on the connecting piece, the connecting piece is fixedly connected with the pressing ring, the first elastic piece is abutted against the upper end of the outer collar, and the second elastic piece is abutted against the upper end of the inner collar.

Further, the upper surface of clamping ring has a spacing groove, the connection piece is located the spacing inslot, the lateral wall of spacing groove with the lateral wall backstop cooperation of connection piece.

Furthermore, the elastic structures are multiple and distributed along the circumferential direction of the compression ring.

Further, an outer annular step is arranged on the outer wall of the compression ring, the outer collar comprises an outer sleeve body and an outer stop ring arranged on the inner side of the outer sleeve body, and the outer stop ring is matched with the outer annular step; and/or, the inner wall of clamping ring is provided with an inner annular step, the inner bundle sleeve comprises an inner sleeve body and an inner stop ring arranged on the outer side of the inner sleeve body, and the inner stop ring is matched with the inner annular step.

Further, the communication head is convexly arranged on the upper surface of the pressing ring, a channel communicated with the communication head and the annular liquid injection groove is formed in the pressing ring, and an annular limiting convex rib is arranged on the outer wall of the communication head.

Further, the battery sealing device further comprises a support, the support is fixedly connected with the pressing ring, and the support is used for being connected with a driving mechanism.

The technical scheme of the invention is applied to provide a battery sealing device which comprises a pressing ring, a communication head, a sealing outer ring and a sealing inner ring, wherein the pressing ring is arranged in a lifting manner, and the lower surface of the pressing ring is provided with an annular liquid injection groove; the communicating head is arranged on the pressure ring and communicated with the annular liquid injection groove; the sealing outer ring is arranged on the pressure ring, and the lower surface of the sealing outer ring is lower than that of the pressure ring in a natural state; the sealing inner ring is arranged on the pressure ring, the sealing inner ring is positioned in the sealing outer ring, the lower surface of the sealing inner ring is lower than that of the pressure ring in a natural state, and the annular liquid injection groove is positioned in an annular region formed by the sealing inner ring and the sealing outer ring in a surrounding mode; the annular liquid injection groove is communicated with a liquid injection hole of the battery, and the lower surface of the pressing ring, the lower surface of the sealing inner ring and the lower surface of the sealing outer ring are used for being abutted against the end face of the battery to form the annular liquid injection groove. By adopting the scheme, the pressing ring is pressed down on the battery, the annular liquid injection groove and the communication of the liquid injection hole can be realized only by covering the liquid injection hole with the annular liquid injection groove, and the accurate alignment is not needed, so that the operation efficiency can be improved. Moreover, the annular liquid injection groove can be sealed through the sealing outer ring and the sealing inner ring on two sides of the annular liquid injection groove, so that the electrolyte is prevented from leaking.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of this application, illustrate embodiments of the invention and, together with the description, serve to explain the invention and not to limit the invention. In the drawings:

fig. 1 illustrates an exploded view of a battery sealing apparatus provided by an embodiment of the present invention;

FIG. 2 shows the cell seal arrangement of FIG. 1 with the cell aligned;

FIG. 3 shows a cross-sectional view of FIG. 2;

FIG. 4 is a schematic view of the battery sealing device of FIG. 2 after depression and sealing engagement with the battery;

fig. 5 shows a cross-sectional view of fig. 4.

Wherein the figures include the following reference numerals:

10. pressing a ring; 11. an annular liquid injection groove; 12. an outer annular groove; 13. an inner annular groove; 14. a limiting groove; 15. an outer annular step; 16. an inner annular step; 20. a communication head; 30. sealing the outer ring; 40. sealing the inner ring; 50. an outer collar; 60. an inner collar; 70. an elastic structure; 71. connecting sheets; 72. a first spring plate; 73. a second elastic sheet; 80. and (4) a bracket.

Detailed Description

The technical solution in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. It is to be understood that the described embodiments are merely exemplary of the invention, and not restrictive of the full scope of the invention. The following description of at least one exemplary embodiment is merely illustrative in nature and is in no way intended to limit the invention, its application, or uses. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

As shown in fig. 1 to 5, an embodiment of the present invention provides a battery sealing apparatus including: the pressing ring 10 is arranged in a liftable mode, and an annular liquid injection groove 11 is formed in the lower surface of the pressing ring 10; the communicating head 20 is arranged on the compression ring 10, and the communicating head 20 is communicated with the annular liquid injection groove 11; the sealing outer ring 30 is arranged on the pressure ring 10, and the lower surface of the sealing outer ring 30 is lower than that of the pressure ring 10 in a natural state; the sealing inner ring 40 is arranged on the pressure ring 10, the sealing inner ring 40 is positioned in the sealing outer ring 30, the lower surface of the sealing inner ring 40 is lower than that of the pressure ring 10 in a natural state, and the annular liquid injection groove 11 is positioned in an annular area formed by the sealing inner ring 40 and the sealing outer ring 30 in a surrounding mode; the annular liquid injection groove 11 is used for being communicated with a liquid injection hole of the battery, and the lower surface of the pressing ring 10, the lower surface of the sealing inner ring 40 and the lower surface of the sealing outer ring 30 are all used for being abutted against the end face of the battery so as to seal the annular liquid injection groove 11. The lower surfaces of the seal inner ring 40 and the seal outer ring 30 are in a compressed state after abutting against the end surfaces of the battery, thereby achieving sealing.

By adopting the scheme, when the liquid is injected into the battery and the opening is formed, the pressing ring 10 is pressed down on the battery, the annular liquid injection groove 11 and the liquid injection hole can be communicated as long as the annular liquid injection groove 11 covers the liquid injection hole, and the accurate alignment is not needed, so that the operation efficiency can be improved. Moreover, the annular liquid injection groove 11 can be sealed by the sealing outer ring 30 and the sealing inner ring 40 at two sides of the annular liquid injection groove 11, so that the electrolyte is prevented from leaking. The communication head 20 is used for connecting with other pipelines to perform operations such as electrolyte injection.

In this embodiment, the outer wall of the pressing ring 10 has an outer annular groove 12, and the sealing outer ring 30 includes an outer ring body and an outer limit ring disposed inside the outer ring body, and the outer limit ring is inserted into the outer annular groove 12; and/or the inner wall of the pressing ring 10 is provided with an inner annular groove 13, the sealing inner ring 40 comprises an inner ring body and an inner limiting ring arranged on the outer side of the inner ring body, and the inner limiting ring is clamped in the inner annular groove 13. Therefore, the position of the sealing outer ring 30 or the sealing inner ring 40 can be limited, and the sealing outer ring 30 and the sealing inner ring 40 are prevented from moving up and down, so that the sealing effect is ensured.

In this embodiment, the battery sealing device further includes: the outer bundling sleeve 50 is sleeved on the compression ring 10, and the inner wall of the outer bundling sleeve 50 is matched with the outer wall of the sealing outer ring 30; and the inner bundling sleeve 60 is arranged in the pressing ring 10 in a penetrating mode, and the outer wall of the inner bundling sleeve 60 is matched with the inner wall of the sealing inner ring 40. The outer bundling sleeve 50 and the inner bundling sleeve 60 can limit the radial directions of the outer sealing ring 30 and the inner sealing ring 40, so that the outer sealing ring 30 and the inner sealing ring 40 can be compressed only in the axial direction when being pressed, and the sealing effect is ensured. Wherein the outer and inner bunches 50 and 60 are made of metal.

In this embodiment, the outer collar 50 is axially movably provided with respect to the pressure ring 10, the inner collar 60 is axially movably provided with respect to the pressure ring 10, and the battery sealing device further includes: and the elastic structure 70 is arranged on the compression ring 10, and the elastic structure 70 is matched with the outer bundling sleeve 50 and the inner bundling sleeve 60 so as to apply downward elastic force to the outer bundling sleeve 50 and the inner bundling sleeve 60. Through the arrangement, after the outer bunch of sleeves 50 and the inner bunch of sleeves 60 are contacted with the upper end of the battery, the outer bunch of sleeves 50 and the inner bunch of sleeves 60 do not move downwards in the process of continuously pressing the pressing ring 10, so that the battery can be prevented from being pressed, and the pressing ring 10 continuously moves downwards until the lower surface of the pressing ring 10 is contacted with the battery, so that sealing is realized.

In this embodiment, the elastic structure 70 includes a connecting piece 71, and a first elastic piece 72 and a second elastic piece 73 disposed on the connecting piece 71, wherein the connecting piece 71 is fixedly connected to the press ring 10, the first elastic piece 72 abuts against the upper end of the outer sheath 50, and the second elastic piece 73 abuts against the upper end of the inner sheath 60. The first elastic sheet 72 and the second elastic sheet 73 can elastically deform, so that the axial directions of the outer collar 50 and the inner collar 60 can be limited, and the axial movement allowance of the outer collar 50 and the inner collar 60 can be ensured. Wherein the connecting piece 71 and the pressing ring 10 are connected by a fastener.

In this embodiment, the upper surface of the pressing ring 10 has a limiting groove 14, the connecting piece 71 is located in the limiting groove 14, and the side wall of the limiting groove 14 is in stop fit with the side wall of the connecting piece 71. Through the arrangement, the positioning and the installation of the elastic structure 70 can be facilitated, the circumferential direction of the elastic structure 70 can be limited, and the rotation of the elastic structure 70 is avoided.

In this embodiment, the number of the elastic structures 70 is plural, and the plural elastic structures 70 are distributed along the circumferential direction of the pressure ring 10. This provides for better retention of the outer and inner bunches 50, 60.

In this embodiment, the outer wall of the pressing ring 10 has an outer annular step 15, the outer collar 50 includes an outer sleeve body and an outer stop ring disposed inside the outer sleeve body, and the outer stop ring is engaged with the outer annular step 15; and/or the inner wall of the pressing ring 10 is provided with an inner annular step 16, the inner bundling sleeve 60 comprises an inner sleeve body and an inner stop ring arranged on the outer side of the inner sleeve body, and the inner stop ring is matched with the inner annular step 16. The axial direction of the outer collar 50 is limited by the cooperation of the outer annular step 15 and the outer stop ring, and the axial direction of the inner collar 60 is limited by the cooperation of the inner annular step 16 and the inner stop ring.

In this embodiment, the communication head 20 is convexly arranged on the upper surface of the pressing ring 10, a channel for communicating the communication head 20 with the annular liquid injection groove 11 is arranged in the pressing ring 10, and an annular limiting convex rib is arranged on the outer wall of the communication head 20. This facilitates connection of the communication head 20 to other piping and provides reliable connection.

In this embodiment, the battery sealing device further includes a bracket 80, the bracket 80 is fixedly connected to the pressing ring 10, and the bracket 80 is used for being connected to a driving mechanism to drive the battery sealing device to move up and down through the driving mechanism. For example, the bracket 80 is connected to a cylinder, a motor, etc.

The common schemes for aligning the liquid injection hole in the current industry are as follows: making the liquid injection hole into an external thread pipe, screwing the liquid injection pipe or the internal thread pipe at the tail end of the formed exhaust pipe with the liquid injection hole, and arranging a sealing gasket in the middle to achieve sealing; the scheme has long working time, complex operation and complex battery structural part; the battery cover plate is provided with a positioning hole for fixing the circumferential position of a battery liquid injection hole so as to align with a liquid injection pipe or a formation exhaust pipe, and the tail end of the liquid injection pipe or the formation exhaust pipe is provided with a sealing ring which is vertically pressed around the liquid injection hole to achieve sealing; this scheme needs to rotate the battery and aim at the reference column with battery locating hole. Or the liquid injection hole is arranged at the central position of the cover plate, the tail end of the liquid injection pipe or the tail end of the exhaust pipe is formed and provided with a sealing ring, and the sealing ring is vertically pressed around the liquid injection hole to achieve sealing; however, the center of the cover plate is often a welding area, and the sealing performance of the liquid filling hole is damaged to a certain extent due to thermal deformation during laser welding. And the sealing is easy to lose efficacy to cause liquid overflow when the radial deformation of the sealing ring is overlarge under the vertical pressure.

The scheme adopts the double-sealing ring for annular sealing, is convenient and fast to operate, does not need to screw threads and fix the circumferential position of the battery liquid injection hole; avoid central welding position, avoid the thermal deformation when laser welding to annotate liquid hole leakproofness's destruction. The radial deformation of the sealing ring is avoided under the vertical pressure, so that the overflow caused by the sealing failure is avoided.

The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.