CN218448176U - Battery tip injecting glue seal structure - Google Patents
Battery tip injecting glue seal structure Download PDFInfo
- Publication number
- CN218448176U CN218448176U CN202222680221.0U CN202222680221U CN218448176U CN 218448176 U CN218448176 U CN 218448176U CN 202222680221 U CN202222680221 U CN 202222680221U CN 218448176 U CN218448176 U CN 218448176U
- Authority
- CN
- China
- Prior art keywords
- glue injection
- sealing
- hole
- sealing plug
- glue
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Classifications
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/10—Energy storage using batteries
Landscapes
- Sealing Battery Cases Or Jackets (AREA)
- Gas Exhaust Devices For Batteries (AREA)
- Filling, Topping-Up Batteries (AREA)
Abstract
The utility model discloses a battery end glue injection sealing structure, which comprises a shell, an electric core, an insulating sealing ring, a flow collecting column, a sealing plug and the like, wherein a glue injection channel is mainly arranged in the sealing plug, and sealant is injected into the glue injection channel to the position between the sealing plug and a welding hole so as to form circumferential sealing; meanwhile, the structural design, the position layout and the size selection of the glue injection channel are optimized, so that the sealing glue can be completely and reliably filled between the sealing plug and the welding hole; therefore, compared with the traditional sealing structure of the sealing ring, the structure for realizing circumferential sealing by injecting the sealing gum can even ensure the contact tightness between the sealing plug and the welding hole and realize more reliable sealing performance because the micro gap between the connecting sealing plug and the welding hole can be filled with the sealing gum to form more complete circumferential sealing.
Description
Technical Field
The utility model relates to a seal structure specifically is a battery tip injecting glue seal structure.
Background
At present, a battery end structure mainly comprises a shell, a battery cell in the shell, a current collecting piece, an insulating sealing ring, a current collecting column and the like, wherein the end part of the shell seals the battery cell; however, the sealing ring is easy to age and peel after being used for a long time due to the relationship between the material and the working environment, so that the circumferential sealing between the sealing plug and the welding hole is problematic, namely the reliability of the sealing effect is reduced; meanwhile, the circumferential sealing is mainly realized by the circumferential extrusion contact of the sealing ring, but the contact tightness between the sealing ring and the inner circumferential surface of the welding hole and the outer circumferential surface of the sealing plug is difficult to ensure in the assembling process, namely the small gaps between the sealing plug and the welding hole are difficult to be completely circumferentially sealed by the sealing ring, so the reliability of the battery performance is influenced.
SUMMERY OF THE UTILITY MODEL
The utility model aims to solve the technical problem that overcome prior art's defect and provide a battery tip injecting glue seal structure that sealing performance is reliable.
The technical problem of the utility model is realized through following technical scheme:
the utility model provides a battery tip injecting glue seal structure, includes the electric core in shell, the shell to and the current collector piece, insulating seal circle and the current collection post of shell tip closed electric core, be equipped with the welding hole in this current collection post and pack the sealing plug of fixing in the welding hole with the stopper, the sealing plug in be equipped with the injecting glue passageway to by injecting sealed glue in this injecting glue passageway and forming the circumference sealed to between sealing plug and the welding hole.
The glue injection channel comprises a glue injection hole and an exhaust hole which are arranged in the sealing plug, and a glue injection ring groove which is arranged on the outer circumferential surface of the sealing plug in a surrounding manner, wherein the uniform ends of the glue injection hole and the exhaust hole are exposed, and the other ends of the glue injection hole and the exhaust hole are communicated with the glue injection ring groove.
The sealing plug is internally provided with a connecting channel respectively communicated with the glue injection hole and the glue injection ring groove, and is also provided with an exhaust channel respectively communicated with the exhaust hole and the glue injection ring groove.
The aperture of the exhaust channel is smaller than that of the connecting channel, and glue injection damping is formed at the intersection of the exhaust channel and the glue injection ring groove.
The exhaust channel and the connecting channel are symmetrical in position by taking the glue injection hole as the center, and the axis of the exhaust channel and the axis of the connecting channel are positioned on the same vertical plane.
The top surface of the sealing plug is provided with a concave surface, and one end of the glue injection hole and one end of the exhaust hole are exposed in the concave surface.
The glue injection hole is arranged in the center of the sealing plug, and the axial lead of the glue injection hole is overlapped with the central line of the sealing plug; the exhaust hole is arranged on one side of the glue injection hole.
The bottom surface of the sealing plug is provided with an explosion-proof valve which is fixedly embedded.
The top surface of the flow collecting column is fixed with the top surface of the sealing plug.
Compared with the prior art, the utility model is mainly characterized in that a glue injection channel is arranged in the sealing plug, and sealant is injected into the glue injection channel to the space between the sealing plug and the welding hole to form circumferential sealing; meanwhile, the structural design, the position layout and the size selection of the glue injection channel are optimized, so that the sealing glue can be completely and reliably filled between the sealing plug and the welding hole; therefore, compared with the traditional sealing ring sealing structure, the structure for realizing circumferential sealing by injecting the sealing glue can even fill the tiny gap between the sealing plug and the welding hole with the sealing glue to form more complete circumferential sealing, thereby better ensuring the contact tightness between the sealing plug and the welding hole and realizing more reliable sealing performance.
Drawings
Fig. 1 is a schematic sectional view of the present invention.
Fig. 2 is a schematic view of the sealing plug.
Fig. 3 is a sectional view a-a of fig. 2.
Fig. 4 is a sectional view taken along line B-B of fig. 2.
Detailed Description
The embodiments of the present invention will be described in detail below with reference to the drawings.
As shown in fig. 1-4, 1, a shell, 2, an electric core, 3, an insulating sealing ring, 4, a current collecting column, 5, a sealing plug, 51, a concave surface, 6, a glue injection channel, 61, a glue injection hole, 62, a connecting channel, 63, a glue injection ring groove, 64, an air vent, 65, an exhaust channel, and 7, an explosion-proof valve.
The utility model provides a battery tip injecting glue seal structure, mainly is in order to improve the sealing performance of battery tip, and its structure includes shell 1, electric core 2 in the shell to and current collection piece, insulating sealing washer 3 and current collection post 4 etc. that the shell tip seals electric core, be equipped with the welding hole in this current collection post and plug in the sealing plug 5 of fixing in the welding hole.
A glue injection channel 6 is arranged in the sealing plug 5 and used for injecting a sealing glue, and the glue injection channel 6 comprises a glue injection hole 61 and an exhaust hole 64 which are arranged in the sealing plug 5, and a glue injection ring groove 63 which is arranged on the outer circumferential surface of the sealing plug 5 in a surrounding manner; the glue injection hole 61 is arranged in the center of the sealing plug 5, the axial lead of the glue injection hole is just overlapped with the central line of the sealing plug 5, the exhaust hole 64 is arranged on the outer side deviating from the center of the sealing plug 5, namely on one side of the glue injection hole 61, and the air exhaust function during the sealant injection is mainly achieved, namely when the glue injection ring groove 63 is slowly filled with the sealant, the internal air can be exhausted through the exhaust hole 64; moreover, the glue injection hole 61 and the exhaust hole 64 are exposed at one end and communicated with the glue injection ring groove 63 at the other end.
Wherein, still be equipped with the connecting channel 62 that communicates glue injection hole 61 and injecting glue annular 63 respectively in the sealing plug 5, then after injecting into sealed glue by the one end that glue injection hole 61 exposes, this sealed glue will slowly fill in injecting glue annular 63 through connecting channel 62, makes sealed glue inject into between sealing plug 5 and the welding hole and has formed the circumference sealed from this.
Compared with the traditional sealing ring sealing structure, even the tiny gap between the connecting sealing plug 5 and the welding hole can be filled with the sealing glue to form more complete circumferential sealing, thereby better ensuring the contact tightness between the sealing plug 5 and the welding hole and realizing more reliable sealing performance.
Meanwhile, the sealing plug 5 is also provided with an exhaust channel 65 respectively communicating the exhaust hole 61 and the glue injection ring groove 63, the exhaust channel and the connecting channel 62 form position symmetry by taking the glue injection hole 61 as a center, and the axis of the exhaust channel 65 and the axis of the connecting channel 62 are on the same vertical plane, that is, the axis of the exhaust channel 65 and the axis of the connecting channel 62 can be overlapped, or can be in an up-down parallel position or an up-down inclined crossing position, but can not form a left-right offset, and the preferred scheme is the position where the axes are overlapped as shown in fig. 4 of the embodiment.
In addition, the aperture of the exhaust channel 65 needs to be smaller than that of the connecting channel 62, so that the intersection of the exhaust channel 65 and the glue injection ring groove 63 forms glue injection damping, and the exhaust channel 65 and the connecting channel 62 adopt the position layout and the size design, so that the sealant injected into the glue injection hole 61 can completely and reliably fill the whole glue injection ring groove 63, and the specific principle is as follows:
when the sealant enters the glue injection ring groove 63 from the connecting channel 62, the sealant can join the exhaust channel 65 along the semicircular tracks in the two directions to slowly fill the glue injection ring groove 63, but the flow speeds of the glue injection in the two directions in the glue injection ring groove 63 are different, which may cause that the glue injection in one direction firstly reaches the exhaust channel 65 and the glue injection in the other direction is delayed, at this time, because of the glue injection damping formed at the intersection of the exhaust channel 65 and the glue injection ring groove 63, the sealant which firstly reaches the exhaust channel 65 cannot quickly flow out from the exhaust channel, but slowly flows and waits for the glue injection in the other direction to also reach the exhaust channel 65 together to form joining, so that the sealant filled in the glue injection ring groove 63 is better ensured not to have empty bubbles.
Of course, the cross sections of the glue injection holes 61, the connecting channels 62, the glue injection ring grooves 63, the vent holes 64 and the exhaust channels 65 which form the glue injection channels 6 are all circular, that is, the preferred scheme is circular holes or circular channels adopted in the embodiment, but in actual use, the shapes are not limited, and holes or channels with other cross section shapes, such as square holes or square channels, can also be adopted.
The bottom surface of the sealing plug 5 is provided with the explosion-proof valve 7 which is fixedly embedded, the top surface of the sealing plug 5 is provided with a concave surface 51, one end of the glue injection hole 61 and one end of the exhaust hole 64 are exposed in the concave surface 51, the concave surface adopts various surface concave structures such as pits or grooves, and the like, and the concave surface 51 has the function of forming a cavity between the top of the glue injection hole and the concave surface 51, so that when the explosion danger occurs in the battery filled with electrolyte, the explosion-proof valve 7 can be matched with the cavity to release pressure and relieve explosion power, thereby eliminating the potential safety hazard in use; the concave surface 51 is opposite to the air vent 64, so that when the sealant in the glue injection ring groove 63 is filled with the sealant and a small amount of the sealant overflows through the air vent 64, the small amount of the overflowing sealant can be guided into the concave surface 51, and the overflowing sealant is prevented from influencing the battery structure.
Finally, after the sealing plug 5 is arranged in the welding hole and the sealant is injected, the top surface of the current collecting column 4 and the top surface of the sealing plug 5 need to be fixed, for example, spot welding fixation or fixation after melting is formed; thus, the utility model discloses both had more reliable sealing performance, had better explosion-proof safe effect again.
The above description is only an embodiment of the present invention, and it should be understood by those skilled in the art that any structural design equivalent to this embodiment is included in the scope of the present invention.
Claims (9)
1. The utility model provides a battery tip injecting glue seal structure, electric core (2) in shell (1), the shell to and shell tip seals current collector, insulating seal circle (3) and current collection post (4) of electric core, be equipped with welding hole and the sealing plug (5) of stopper dress fixing in the welding hole in this current collection post, its characterized in that sealing plug (5) in be equipped with injecting glue passageway (6), and inject sealed glue to sealing plug (5) and welding hole between and form the circumference by this injecting glue passageway in and seal.
2. The end glue injection sealing structure of the battery according to claim 1, wherein the glue injection channel (6) comprises a glue injection hole (61) and an exhaust hole (64) which are arranged in the sealing plug (5), and a glue injection ring groove (63) which is arranged around the outer circumferential surface of the sealing plug (5), one ends of the glue injection hole (61) and the exhaust hole (64) are exposed, and the other ends of the glue injection hole and the exhaust hole are communicated with the glue injection ring groove (63).
3. The battery end glue injection sealing structure according to claim 2, wherein a connecting channel (62) respectively communicating the glue injection hole (61) and the glue injection ring groove (63) is arranged in the sealing plug (5), and an exhaust channel (65) respectively communicating the exhaust hole (64) and the glue injection ring groove (63) is further arranged.
4. The battery end glue injection sealing structure according to claim 3, characterized in that the hole diameter of the air exhaust channel (65) is smaller than that of the connecting channel (62), and glue injection damping is formed at the intersection of the air exhaust channel (65) and the glue injection ring groove (63).
5. The battery end glue injection sealing structure according to claim 3, characterized in that the exhaust channel (65) and the connecting channel (62) form a symmetrical position by taking the glue injection hole (61) as a center, and the axial line of the exhaust channel (65) and the axial line of the connecting channel (62) are on the same vertical plane.
6. The battery end glue injection sealing structure according to claim 2, wherein a concave surface (51) is arranged on the top surface of the sealing plug (5), and one end of each of the glue injection hole (61) and the exhaust hole (64) is exposed in the concave surface (51).
7. The battery end glue injection sealing structure according to claim 2, characterized in that the glue injection hole (61) is arranged in the center of the sealing plug (5), and the axial line of the glue injection hole (61) overlaps with the central line of the sealing plug (5); the exhaust hole (64) is arranged on one side of the glue injection hole (61).
8. The battery end glue injection sealing structure according to claim 1, characterized in that the bottom surface of the sealing plug (5) is provided with an explosion-proof valve (7) which is embedded and fixed.
9. The battery end glue injection sealing structure according to claim 1, characterized in that the top surface of the current collecting column (4) and the top surface of the sealing plug (5) are fixed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222680221.0U CN218448176U (en) | 2022-10-12 | 2022-10-12 | Battery tip injecting glue seal structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222680221.0U CN218448176U (en) | 2022-10-12 | 2022-10-12 | Battery tip injecting glue seal structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN218448176U true CN218448176U (en) | 2023-02-03 |
Family
ID=85042672
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202222680221.0U Active CN218448176U (en) | 2022-10-12 | 2022-10-12 | Battery tip injecting glue seal structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN218448176U (en) |
-
2022
- 2022-10-12 CN CN202222680221.0U patent/CN218448176U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| AU2009238921B2 (en) | Storage battery | |
| WO2012005020A1 (en) | Sealed battery | |
| CN207052638U (en) | A kind of electrokinetic cell top cover | |
| US20220416337A1 (en) | Battery case, battery, and electronic device | |
| CN218448176U (en) | Battery tip injecting glue seal structure | |
| CN112635878A (en) | Miniature lithium ion battery with welding protection washer | |
| CN104009256A (en) | Open formation process of lithium ion power battery | |
| CN101672378A (en) | Downloading type plunger valve | |
| CN204991783U (en) | Secondary cell top cap | |
| CN208797053U (en) | Cylindrical battery and its sealing ring | |
| CN210576045U (en) | Sealing structure for high-temperature battery | |
| CN214505739U (en) | Power battery seal nail and battery top cover based on glue injection sealing | |
| CN105576163A (en) | Lead-acid storage battery terminal sealing structure and technology capable of preventing acid leakage | |
| JP6118564B2 (en) | Alkaline battery gasket and alkaline battery | |
| CN210092137U (en) | Lithium battery shell | |
| CN203659981U (en) | Filling port sealing structure with inward-concave plug body | |
| CN208690432U (en) | A kind of production line of alkaline battery | |
| CN203415649U (en) | Electrode terminal, cover plate component, and battery containing cover plate component | |
| JP5153220B2 (en) | Lead acid battery | |
| CN202013904U (en) | Ring-shaped cover group for lithium battery | |
| CN213752784U (en) | Cylindrical battery | |
| CN218569162U (en) | Aluminum oxidation silver is utmost point post insulation protection structure for battery | |
| CN216773474U (en) | Lead-acid storage battery terminal structure capable of improving welding quality | |
| CN220774545U (en) | Battery cell top cover structure and battery cell | |
| CN218648050U (en) | Lithium ion battery top cover |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |