CN217544746U - Cylindrical battery sealing assembly and cylindrical battery - Google Patents
Cylindrical battery sealing assembly and cylindrical battery Download PDFInfo
- Publication number
- CN217544746U CN217544746U CN202221691863.4U CN202221691863U CN217544746U CN 217544746 U CN217544746 U CN 217544746U CN 202221691863 U CN202221691863 U CN 202221691863U CN 217544746 U CN217544746 U CN 217544746U
- Authority
- CN
- China
- Prior art keywords
- hole
- rubber
- cylindrical battery
- battery
- pole
- 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)
- Connection Of Batteries Or Terminals (AREA)
Abstract
The utility model provides a cylindrical battery sealing component and a cylindrical battery, relating to the technical field of batteries, wherein the cylindrical battery sealing component comprises a sealing component main body, a penetrating pole column hole is arranged on the sealing component main body, and a pole column is arranged in the pole column hole; the sealing assembly main body comprises a rubber piece and a conductive cover, wherein the rubber piece is arranged at the lower end of the conductive cover and faces towards the battery cell; the periphery of the rubber piece is provided with an edge bulge which is far away from the bulge in the battery cell direction, and the edge bulge is wrapped along the periphery of the conductive cover. The utility model discloses a cylinder type battery seal subassembly seal the subassembly main part and include rubber spare and electrically conductive lid, the week side of the electrically conductive lid of edge protrusion parcel of rubber spare, battery case seals compression rubber spare through the roller slot, realizes sealing between subassembly and the battery case.
Description
Technical Field
The utility model belongs to the technical field of the technique of battery and specifically relates to a cylinder type battery seals subassembly and cylinder type battery is related to.
Background
The lithium ion battery is widely applied to the fields of energy storage, new energy automobiles and the like due to the advantages of high energy density, long service life and the like, and the cylindrical lithium ion battery comprises a conventional cylindrical lithium ion battery and a large-size cylindrical lithium ion battery.
At present, the large-size cylindrical battery in the curled edge sealing form is insufficient in sealing strength or too high in sealing strength and poor in reliability, or thermal shock or temperature shock can cause liquid leakage after a cover is opened, or safety risk exists.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a jumbo size cylinder type battery that reliability is higher seals subassembly and cylinder type battery to solve present battery and seal the problem that intensity leads to the easy weeping of battery inadequately, and seal the safety problem that intensity too high leads to.
The utility model provides a cylinder type battery seal assembly, including the seal assembly main part, be provided with the utmost point post hole that runs through in the seal assembly main part, and be in utmost point post is downthehole to wear to be equipped with utmost point post.
The sealing assembly main body comprises a rubber piece and a conductive cover, wherein the rubber piece is arranged at the lower end of the conductive cover and faces towards the battery cell; the periphery of the rubber piece is provided with an edge bulge which is far away from the bulge in the battery cell direction, and the edge bulge is wrapped along the periphery of the conductive cover.
In an alternative embodiment, the side of the edge projection remote from the conductive cover is provided with an edge projection.
In an optional embodiment, the conductive cover is provided with an upper through hole, the rubber member is provided with a lower through hole corresponding to the upper through hole, and the upper through hole and the lower through hole form the pole hole.
In an optional embodiment, a pole socket is disposed on an end surface of the pole facing the battery cell, and the pole socket is used for being welded to a pole lug on the battery cell.
In an optional implementation manner, a through hole is formed in the conductive cover, a liquid injection protrusion is arranged on the rubber piece, the liquid injection protrusion penetrates through the through hole, and a liquid injection hole is formed in the liquid injection protrusion.
An inner sealing bulge arranged along the axial direction of the liquid injection hole is arranged in the liquid injection hole; the lower end of the rubber piece is provided with two liquid guide bulges, the two liquid guide bulges are arranged on two sides of the liquid injection hole, and the liquid injection hole is provided with a sealing nail.
In an optional embodiment, a positioning protrusion is arranged on the periphery of the lower through hole of the rubber piece, and a positioning groove matched with the positioning protrusion is arranged on one side, facing the positioning protrusion, of the conductive cover.
In an optional embodiment, the rubber member is made of one of fluororubber, ethylene propylene rubber, butyl rubber, nitrile rubber, chlorinated nitrile rubber, chloroprene rubber and isoprene rubber.
In an alternative embodiment, the conductive cover is an aluminum cover.
In an alternative embodiment, the post is a negative post.
The utility model discloses a cylinder type battery seal subassembly's seal subassembly main part includes rubber spare and electrically conductive lid, the protruding parcel in edge of rubber spare electrically conductive lid week side, and battery case seals compressed rubber spare through the roller slot, realizes sealing between subassembly and the battery case.
In a second aspect, the present invention provides a cylindrical battery, including any one of the foregoing embodiments, the cylindrical battery sealing assembly.
The utility model also provides a cylinder type battery, this cylinder type battery adopt foretell cylinder type battery to seal the subassembly to have all beneficial effects of cylinder type battery seal subassembly.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the embodiments or the technical solutions in the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.
Fig. 1 is a schematic structural view of a cylindrical battery sealing assembly according to an embodiment of the present invention;
fig. 2 is a schematic structural view of a rubber member of the cylindrical battery closure assembly shown in fig. 1;
FIG. 3 is a schematic view of another angle of the rubber member shown in FIG. 2;
FIG. 4 is a schematic structural view of a longitudinal section of the rubber member shown in FIG. 2;
fig. 5 is a schematic structural view of a conductive cap of the cylindrical battery sealing assembly shown in fig. 1;
FIG. 6 is a schematic longitudinal cross-sectional view of the conductive cover shown in FIG. 5;
fig. 7 is a schematic structural view of a terminal post of the cylindrical battery sealing assembly shown in fig. 1;
fig. 8 is a schematic structural view of a sealing aluminum nail of the cylindrical battery closure assembly shown in fig. 1;
fig. 9 is a schematic structural view of a cylindrical battery according to an embodiment of the present invention;
fig. 10 is a partially enlarged view of a of the cylindrical battery shown in fig. 9.
Icon: 100-pole; 101-pole base; 200-closure assembly body; 201-rubber part; 2011-through holes; 2012-upper perforation; 2013-positioning the groove; 202-a conductive cover; 2021-locating protrusions; 2022-lower perforation; 2023-edge bead; 2024-edge bead; 2025-liquid injection bulge; 2026-liquid injection hole; 2027-inner seal projection; 2028-draining bump; 300-sealing the nail; 400-a battery housing; 500-cell.
Detailed Description
The technical solution of the present invention will be described clearly and completely with reference to the following embodiments, and it should be understood that the described embodiments are some, but not all embodiments of the present invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
Examples
Referring to fig. 1 to 8, the present invention provides a cylindrical battery sealing assembly, which includes a sealing assembly main body 200, wherein the sealing assembly main body 200 is provided with a penetrating pole post hole, and a pole post 100 is inserted into the pole post hole;
the seal assembly main body 200 comprises a rubber member 201 and a conductive cover 202, wherein the rubber member 201 is arranged at the lower end of the conductive cover 202, and the rubber member 201 faces the battery cell 500; an edge protrusion 2023 protruding in a direction away from the battery cell 500 is disposed on the peripheral side of the rubber member 201, and the edge protrusion 2023 is wrapped around the peripheral side of the conductive cover 202.
In some embodiments, the sealing assembly body 200 of the cylindrical battery sealing assembly has a pole hole penetrating through the sealing assembly body 200, and the pole 100 is disposed in the pole hole; the rubber member 201 of the seal assembly main body 200 is disposed at the lower end of the conductive cover 202, when the cylindrical battery seal assembly is mounted with the battery case 400, the rubber member 201 faces the battery cell 500, the direction of the edge protrusion 2023 of the rubber member 201 is a direction away from the battery cell 500, the edge protrusion 2023 encloses a mounting area, and the conductive cover 202 is mounted in the mounting area; after the battery shell 400 and the roller groove of the cylindrical battery sealing assembly are sealed, the edge protrusion 2023 can wrap the edge of the conductive cover 202, so that the battery shell 400 and the conductive cover 202 can be physically insulated and isolated; in the process of sealing the roller groove, the rubber part 201 can be extruded and deformed, so that the gap between the battery shell 400 and the conductive cover 202 can be well sealed, the sealing reliability of the battery shell 400 is ensured, and the sealing assembly 200 cannot be flushed with leakage liquid under thermal shock or temperature shock of the battery.
In an alternative embodiment, the side of the edge bump 2023 remote from the conductive cover 202 is provided with an edge bump 2024.
After the battery case 400 is sealed with the roller slot of the cylindrical battery sealing assembly, the edge protrusion 2024 faces to a direction away from the battery cell 500, at this time, the edge protrusion 2024 is located on the side of the upper end of the battery case 400, and the edge protrusion 2024 is used to better insulate and isolate the side of the top end of the battery case 400 from the conductive cover 202.
In an alternative embodiment, an upper through hole 2012 is disposed on the conductive cover 202, a lower through hole 2022 corresponding to the upper through hole 2012 is disposed on the rubber member 201, and the upper through hole 2012 and the lower through hole 2022 form the pole hole.
In an alternative embodiment, an end surface of the pole 100 facing the battery cell 500 is provided with a pole socket 101, and the pole socket 101 is used for welding with a pole lug on the battery cell 500.
In some embodiments, the conductive cover 202 has an upper through hole 2012, the rubber member 201 has a lower through hole 2022, the upper through hole 2012 is disposed corresponding to the lower through hole 2022, such that the upper through hole 2012 and the lower through hole 2022 form a pole hole, and the pole 100 is simultaneously inserted into the upper through hole 2012 and the lower through hole 2022; the pole 100 is inserted into the pole hole from the rubber member 201 side, and the primary sealing is realized because the diameter of the pole 100 is larger than the inner diameter of the lower through hole 2022 of the rubber member 201. In addition, the pole column seat 101 is embedded into the lower end face of the rubber part 201 and is flush with the lower end face, and secondary sealing is achieved. The sealing reliability of the pole 100 part is ensured by two times of sealing. After the pole 100 penetrates into the pole hole, the upper end of the pole 100 is riveted with the upper perforation 2012 of the conductive cover 202, the pole 100 and the conductive cover 202 are fixed, and meanwhile, a circle of laser welding is carried out around the upper end of the pole 100, so that the more excellent contact between the pole 100 and the conductive cover 202 is realized, and the internal resistance is reduced.
Because the diameter of the pole post seat 101 is larger than that of the pole 100, the contact area between the pole lug and the pole post seat 101 is larger, so that the pole lug and the pole post seat 101 are welded more firmly and are not easy to be subjected to cold welding, and the pole post seat 101 is not easy to be separated from the pole lug.
In an alternative embodiment, a through hole 2011 is formed in the conductive cover 202, a liquid injection protrusion 2025 is formed on the rubber member 201, the liquid injection protrusion 2025 penetrates through the through hole 2011, and a liquid injection hole 2026 is formed in the liquid injection protrusion 2025;
an inner sealing bulge 2027 arranged along the axial direction of the liquid injection hole 2026 is arranged in the liquid injection hole 2026; two liquid guide protrusions 2028 are arranged at the lower end of the rubber member 201, and the two liquid guide protrusions 2028 are arranged at two sides of the liquid injection hole 2026.
In some embodiments, the conductive cover 202 is provided with a through hole 2011, the liquid injection protrusion 2025 on the rubber member 201 can be inserted into the through hole 2011, the liquid injection hole 2026 is formed in the liquid injection protrusion 2025, and after the liquid injection into the battery is completed, the sealing nail 300 is inserted into the liquid injection hole 2026 to seal the liquid injection hole 2026; the liquid injection protrusion 2025 is arranged between the sealing nail 300 and the through hole 2011, and the liquid injection protrusion 2025 can increase the sealing distance of the sealing nail 300, so that the sealing nail 300 can better seal the liquid injection hole 2026, and the electrolyte is prevented from leaking from the liquid injection hole 2026.
In order to make the seal nail 300 seal the liquid filling hole 2026 better, an inner seal protrusion 2027 is provided in the liquid filling hole 2026 to increase the amount of compression of the rubber at the protrusion portion, thereby ensuring more excellent sealing effect of the liquid filling hole 2026 and preventing the leakage of the electrolyte from the liquid filling hole. Meanwhile, the sealing nail 300 can be pulled out and inserted for multiple times, so that repeated liquid injection and multiple air exhaust can be realized, liquid injection is convenient, and the internal pressure of the battery is reduced.
In an alternative embodiment, a positioning protrusion 2021 is disposed on the periphery of the lower through hole 2022 of the rubber member 201, and a positioning groove 2013 matching with the positioning protrusion 2021 is disposed on the side of the conductive cover 202 facing the positioning protrusion 2021.
In order to make the upper perforation 2012 of the conductive cover 202 and the lower perforation 2022 of the rubber member 201 more concentric, the rubber member 201 is provided with a positioning protrusion 2021, and the conductive cover 202 is provided with a positioning groove 2013; when the conductive cover 202 is connected with the rubber member 201, the positioning protrusion 2021 is inserted into the positioning groove 2013, so that the upper perforation 2012 on the conductive cover 202 and the lower perforation 2022 on the rubber member 201 can be concentric, and thus the edge protrusion 2023 can uniformly wrap the peripheral side of the conductive cover 202, and after the roller slot is sealed, a more excellent sealing effect of the sealing component is realized, so that the edge protrusion 2023 can more effectively insulate and isolate the battery case 400 from the conductive cover 202. Meanwhile, the protrusion of the conductive cover 202 can increase the area of the pole, so that subsequent welding of the adapter plate is facilitated.
In an alternative embodiment, the material of the rubber member 201 is one of fluororubber, ethylene propylene rubber, butyl rubber, nitrile rubber, chlorinated nitrile rubber, chloroprene rubber and isoprene rubber, and the material of the rubber member 201 has insulating properties.
In an alternative embodiment, the conductive cover 202 is an aluminum cover.
In an alternative embodiment, the post 100 is a negative post.
The pole 100 is a cathode pole, one end face of the pole 100 is welded with a pole lug, the other end of the pole 100 can penetrate through the rubber piece 201 to be connected with the conductive cover 202, the material of the cathode pole is generally copper, and the material of the rubber piece 201 can be one of fluororubber, ethylene propylene rubber, butyl rubber, nitrile rubber, chlorinated nitrile rubber, chloroprene rubber and isoprene rubber.
The utility model discloses a cylinder type battery seals subassembly main part 200 includes rubber spare 201 and electrically conductive lid 202, and the edge protrusion 2023 of rubber spare 201 can wrap up all sides of electrically conductive lid 202, and when this seals subassembly main part 200 and is used for sealed battery case 400 like this, carry out the roll slot and seal, and rubber spare 201 has sealed the gap between electrically conductive lid 202 and the battery case 400 like this, and the difficult weeping of battery has improved security and life.
The sealing assembly main body comprises a rubber part 201, a conductive cover 202 and a pole 100; the edge protrusion 2023 of the rubber member 201 can wrap the peripheral side of the conductive cover 202, so that the edge of the rubber member 201 is positioned between the conductive cover 202 and the hard component of the battery case 400, and when the roller groove of the battery case 400 is sealed, the rubber member 201 can be compressed better, so that more excellent sealing is realized, and liquid leakage of the battery under extreme use conditions is avoided. In addition, the sealing component main body 200 has an explosion-proof function, when the battery is out of control, the sealing part is preferably flushed, and the safety problems of ignition and explosion of the battery and the like are avoided.
Referring to fig. 9 and 10, the present invention provides a cylindrical battery including any one of the foregoing embodiments of the cylindrical battery sealing assembly.
The utility model also provides a cylinder type battery, this cylinder type battery adopt foretell cylinder type battery to seal the subassembly to have all beneficial effects of cylinder type battery seal subassembly.
Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; although the present invention has been described in detail with reference to the foregoing embodiments, it should be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; such modifications or substitutions do not depart from the scope of the invention in its corresponding aspects.
Claims (10)
1. A cylindrical battery sealing assembly is characterized by comprising a sealing assembly main body (200), wherein a pole column hole penetrates through the sealing assembly main body (200), and a pole column (100) penetrates through the pole column hole;
the sealing assembly main body (200) comprises a rubber piece (201) and a conductive cover (202), wherein the rubber piece (201) is arranged at the lower end of the conductive cover (202), and the rubber piece (201) faces to the battery cell (500); the periphery of the rubber piece (201) is provided with an edge protrusion (2023) protruding towards the direction far away from the battery cell (500), and the edge protrusion (2023) wraps along the periphery of the conductive cover (202).
2. Cylindrical battery closure assembly according to claim 1, characterized in that the side of the edge projection (2023) facing away from the conductive lid (202) is provided with an edge projection (2024).
3. The cylindrical battery sealing assembly of claim 2, wherein the conductive cover (202) is provided with an upper through hole (2012), the rubber member (201) is provided with a lower through hole (2022) corresponding to the upper through hole (2012), and the upper through hole (2012) and the lower through hole (2022) form the pole hole.
4. The cylindrical battery sealing assembly of claim 1, wherein an end surface of the pole (100) facing the battery core (500) is provided with a pole socket (101), and the pole socket (101) is used for welding with a pole tab on the battery core (500).
5. The cylindrical battery sealing assembly according to claim 1, wherein the conductive cap (202) is provided with a through hole (2011), the rubber member (201) is provided with a liquid injection protrusion (2025), the liquid injection protrusion (2025) is inserted into the through hole (2011), and the liquid injection protrusion (2025) is provided with a liquid injection hole (2026);
an inner sealing bulge (2027) arranged along the axial direction of the liquid injection hole (2026) is arranged in the liquid injection hole (2026); two liquid guide bulges (2028) are arranged at the lower end of the rubber piece (201), the two liquid guide bulges (2028) are arranged at the two sides of the liquid injection hole (2026), and a sealing nail (300) is arranged at the liquid injection hole (2026).
6. The cylindrical battery sealing assembly as claimed in claim 3, wherein a positioning protrusion (2021) is disposed around the lower through hole (2022) of the rubber member (201), and a positioning groove (2013) matching with the positioning protrusion (2021) is disposed on a side of the conductive cover (202) facing the positioning protrusion (2021).
7. The cylindrical battery sealing assembly of claim 1, wherein the rubber member (201) is made of one of fluororubber, ethylene propylene rubber, butyl rubber, nitrile rubber, chlorinated nitrile rubber, chloroprene rubber and isoprene rubber.
8. The cylindrical battery closure assembly of claim 1, wherein the conductive cap (202) is an aluminum cap.
9. The cylindrical battery closure assembly of claim 1, wherein the post (100) is a negative post (100).
10. A cylindrical battery comprising the cylindrical battery closure assembly of any one of claims 1-9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221691863.4U CN217544746U (en) | 2022-06-30 | 2022-06-30 | Cylindrical battery sealing assembly and cylindrical battery |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221691863.4U CN217544746U (en) | 2022-06-30 | 2022-06-30 | Cylindrical battery sealing assembly and cylindrical battery |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN217544746U true CN217544746U (en) | 2022-10-04 |
Family
ID=83421722
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202221691863.4U Active CN217544746U (en) | 2022-06-30 | 2022-06-30 | Cylindrical battery sealing assembly and cylindrical battery |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN217544746U (en) |
-
2022
- 2022-06-30 CN CN202221691863.4U patent/CN217544746U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| JP4493623B2 (en) | Secondary battery | |
| JP4111621B2 (en) | Sealed battery, sealing plug for sealed battery, and injection hole sealing method | |
| KR100995417B1 (en) | Secondary Battery | |
| CN218005057U (en) | Cover plate assembly and battery | |
| KR101054748B1 (en) | Secondary battery cap assembly with excellent electrolyte sealing | |
| KR101075343B1 (en) | Secondary battery | |
| CN216389662U (en) | Cylindrical secondary battery and battery module | |
| KR100303825B1 (en) | Secondary Battery Cap Assembly | |
| US20120034511A1 (en) | Sealed battery | |
| US20240154176A1 (en) | Battery and assembling method thereof | |
| CN106025110B (en) | Sealed battery | |
| CN219180738U (en) | Current collecting component and secondary battery | |
| CN113871763A (en) | Cylindrical battery case, cylindrical battery, and cylindrical battery mounting method | |
| KR100670515B1 (en) | Cap Assembly and Lithium ion Secondary Battery with the same | |
| WO2024094179A1 (en) | End cover assembly of battery, battery cell, energy storage device, and electrical apparatus | |
| JPH10241651A (en) | Rectangular non-aqueous electrolytic solution battery and manufacture of opening-sealing plate of the same | |
| CN212434723U (en) | Metal shell button type lithium ion battery | |
| CN217544746U (en) | Cylindrical battery sealing assembly and cylindrical battery | |
| CN210379217U (en) | Cylindrical battery and battery cap thereof | |
| CN112635878A (en) | Miniature lithium ion battery with welding protection washer | |
| CN216793839U (en) | Battery cell structure and battery | |
| CN216773371U (en) | Cover plate of lithium battery and square battery structure | |
| CN215911489U (en) | Button cell | |
| JP6802980B2 (en) | Non-aqueous electrolyte secondary battery | |
| CN219203440U (en) | Cylindrical battery and electronic equipment |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |