CN218334176U - New-type battery monomer structure - Google Patents
New-type battery monomer structure Download PDFInfo
- Publication number
- CN218334176U CN218334176U CN202222422997.2U CN202222422997U CN218334176U CN 218334176 U CN218334176 U CN 218334176U CN 202222422997 U CN202222422997 U CN 202222422997U CN 218334176 U CN218334176 U CN 218334176U
- Authority
- CN
- China
- Prior art keywords
- valve body
- sealing
- ventilative
- insulating member
- electricity
- 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.)
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Links
- 239000000178 monomer Substances 0.000 title claims abstract description 6
- 238000007789 sealing Methods 0.000 claims abstract description 49
- 230000005611 electricity Effects 0.000 claims abstract description 14
- 238000009413 insulation Methods 0.000 abstract 5
- 238000005253 cladding Methods 0.000 abstract 1
- 238000009423 ventilation Methods 0.000 description 32
- 238000006073 displacement reaction Methods 0.000 description 5
- -1 polypropylene Polymers 0.000 description 3
- 238000004080 punching Methods 0.000 description 3
- 238000003466 welding Methods 0.000 description 3
- 229910000838 Al alloy Inorganic materials 0.000 description 2
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 description 2
- 239000004734 Polyphenylene sulfide Substances 0.000 description 2
- 239000004743 Polypropylene Substances 0.000 description 2
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 2
- 229910052782 aluminium Inorganic materials 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 229920001707 polybutylene terephthalate Polymers 0.000 description 2
- 229920000069 polyphenylene sulfide Polymers 0.000 description 2
- 229920001155 polypropylene Polymers 0.000 description 2
- 239000000243 solution Substances 0.000 description 2
- FGRBYDKOBBBPOI-UHFFFAOYSA-N 10,10-dioxo-2-[4-(N-phenylanilino)phenyl]thioxanthen-9-one Chemical compound O=C1c2ccccc2S(=O)(=O)c2ccc(cc12)-c1ccc(cc1)N(c1ccccc1)c1ccccc1 FGRBYDKOBBBPOI-UHFFFAOYSA-N 0.000 description 1
- PNEYBMLMFCGWSK-UHFFFAOYSA-N Alumina Chemical compound [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 description 1
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- 229910000570 Cupronickel Inorganic materials 0.000 description 1
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- YOCUPQPZWBBYIX-UHFFFAOYSA-N copper nickel Chemical compound [Ni].[Cu] YOCUPQPZWBBYIX-UHFFFAOYSA-N 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 239000003792 electrolyte Substances 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 239000011810 insulating material Substances 0.000 description 1
- 229910052744 lithium Inorganic materials 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 229910052759 nickel Inorganic materials 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- 238000007747 plating Methods 0.000 description 1
- 229920001343 polytetrafluoroethylene Polymers 0.000 description 1
- 239000004810 polytetrafluoroethylene Substances 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 238000004804 winding Methods 0.000 description 1
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
- Gas Exhaust Devices For Batteries (AREA)
Abstract
The utility model discloses a new-type battery monomer structure, including being equipped with the notched shell, electrode subassembly, the recess top is equipped with the lid subassembly, the lid subassembly includes sealed valve body, ventilative valve body, first insulation member, sealing member, sealed valve body is circular platelike structure with ventilative valve body, sealed valve body is connected with ventilative valve body middle part electricity, first insulation member is ring column structure, first insulation member's external diameter and sealed valve body, ventilative valve body's diameter equals, first insulation member is located between sealed valve body and the ventilative valve body, sealing member cladding sealed valve body, ventilative valve body and first insulation member's outward flange, be provided with the folding extension between electrode subassembly and the ventilative valve body, ventilative valve body is connected to extension one end electricity, electrode subassembly is connected to the other end electricity of extension, the shell is inwards buckled and is compressed tightly sealing member. The utility model discloses greatly reduced press in the battery electricity core and not reach the threshold value and receive the electric connection probability of failure under ordinary external force strikes.
Description
Technical Field
The utility model belongs to the technical field of the battery, especially a new-type battery monomer structure.
Background
The cover assembly of the existing cylindrical lithium secondary battery is generally provided with a current interruption device, when the internal pressure of an electric core reaches a threshold value, the electric core is disconnected by means of the deformation of the sealing valve body and the separation of the ventilation valve body from the electric connection, the electric core is disconnected, the safety of the electric core is ensured, and therefore the electric connection between the sealing valve body and the ventilation valve body is very fragile, and the disconnection of the electric core is ensured. But current lid subassembly does not carry out whole fixed connection, and when the internal pressure of electricity core did not reach the threshold value and received ordinary external force and assault, the relative displacement takes place easily between sealed valve body and the ventilative valve body or less displacement has taken place between lid subassembly and the shell, and very big probability leads to the electricity to connect inefficacy, and the battery is scrapped.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to overcome prior art's shortcoming, provide a new-type battery cell structure.
The purpose of the utility model is realized through the following technical scheme: the novel battery monomer structure comprises a shell with an opening at one end, wherein an electrode assembly is arranged in the shell, an inwards-recessed groove is formed in the shell, the groove is located above the electrode assembly, a cover assembly is arranged above the groove and comprises a sealing valve body, a ventilation valve body, a first insulating member and a sealing member, the sealing valve body and the ventilation valve body are of circular plate-shaped structures, the sealing valve body is electrically connected with the middle of the ventilation valve body, the first insulating member is of a circular ring-shaped structure, the outer diameter of the first insulating member is equal to the diameter of the sealing valve body and the diameter of the ventilation valve body, the first insulating member is located between the sealing valve body and the ventilation valve body, the sealing member wraps the outer edges of the sealing valve body, the ventilation valve body and the first insulating member, an extending portion is arranged between the electrode assembly and the ventilation valve body, one end of the extending portion is electrically connected with the ventilation valve body, the other end of the extending portion is electrically connected with the electrode assembly, the extending portion is folded between the electrode assembly and the ventilation valve body, and the shell is bent inwards and compresses the sealing member.
Furthermore, a first convex part protruding outwards is arranged on the sealing valve body, and the first convex part is in a circular ring shape.
Further, the center of ventilative valve body is provided with the second convex part, second convex part electricity is connected sealed valve body, be provided with a plurality of bleeder vents on the ventilative valve body, the bleeder vent is rotational symmetry and distributes.
Furthermore, a first tab and a first current collecting member are arranged on the upper portion of the electrode assembly, one end of the first tab is electrically connected with the electrode assembly, the other end of the first tab is electrically connected with the first current collecting member, the first current collecting member is electrically connected with the ventilation valve body, a second tab and a second current collecting member are arranged at the bottom of the electrode assembly, one end of the second tab is electrically connected with the electrode assembly, the other end of the second tab is electrically connected with the second current collecting member, and the second current collecting member is electrically connected with the shell.
Furthermore, a second insulating member is arranged between the first current collecting member and the groove, and the second insulating member covers the outer edges of the first tab and the first current collecting member.
The utility model has the advantages of it is following: the sealing valve body and the ventilation valve body are coated by the sealing component, so that the stability of the sealing valve body and the ventilation valve body is enhanced, and the electric connection failure caused by relative displacement is avoided; meanwhile, the groove on the shell is matched with the edge in an inward bending way to fix the sealing valve body and the ventilation valve body again, so that the stability is further enhanced; the folded extension part increases the distance for the current interruption device and the first current collecting disc to keep the electric connection to generate displacement under the impact of external force, so that the problem of electric connection failure caused by short-distance displacement is avoided; the three structures greatly reduce the probability of failure of electric connection when the internal pressure of the battery cell does not reach the threshold value and is impacted by common external force.
Drawings
FIG. 1 is a schematic view of the cross-sectional structure of the utility model before sealing;
FIG. 2 is a schematic view of the structure of the rear section of the seal of the present invention;
fig. 3 is a schematic diagram of a separated three-dimensional structure of the cap assembly of the present invention;
fig. 4 is a schematic diagram of the overall three-dimensional structure of the present invention.
In the figure, 1, a housing; 2. an electrode assembly; 3. a cap assembly; 4. an extension portion; 5. a groove; 6. a sealing member; 7. a first tab; 8. a first manifold plate; 9. a second tab; 10. a second collector plate; 11. sealing the valve body; 12. a first convex portion; 13. a gas permeable valve body; 14. a second convex portion; 15. air holes are formed; 16. a first insulating member; 17. a second insulating member.
Detailed Description
To make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the drawings of the embodiments of the present invention are combined to clearly and completely describe the technical solutions of the embodiments of the present invention, and obviously, the described embodiments are some embodiments of the present invention, not all embodiments. The components of embodiments of the present invention, as generally described and illustrated in the figures herein, may be arranged and designed in a wide variety of different configurations.
In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. indicate the directions or positional relationships based on the directions or positional relationships shown in the drawings, or the directions or positional relationships that the products of the present invention are usually placed when used, or the directions or positional relationships that the skilled person usually understand, and are only for the convenience of describing the present invention and simplifying the description, but not for indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and the like are used solely to distinguish one from another, and are not to be construed as indicating or implying relative importance.
In the description of the present invention, it should also be noted that, unless otherwise explicitly specified or limited, the terms "disposed," "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood as a specific case by those skilled in the art.
As shown in fig. 1 to 4, a novel battery cell structure comprises a housing 1 with an opening at one end, an electrode assembly 2 is arranged in the housing 1, the electrode assembly is formed by winding an anode, a cathode and a separator paper, a plurality of first tabs 7 are led out from the electrode assembly upwards, a plurality of second tabs 9 are led out from the lower part of the electrode assembly downwards, the first tabs 7 and the second tabs 9 have opposite polarities, and the first tabs 7 and the second tabs 9 can be mechanically flattened or orderly bent inwards to enable the tabs with the same polarity to be folded and gathered together, so that ohmic internal resistance of the electrode assembly can be reduced, the charge-discharge rate performance of a secondary battery can be improved, the heat productivity in the charge-discharge process can be reduced, and the thermal runaway risk of the battery cell can be reduced.
The upper portion of shell 1 is provided with inside sunken annular recess 5, installs first current collector dish 8 and second insulating component 17 between recess 5 and the electrode subassembly 2, and first utmost point ear 7 passes through the first current collector dish 8 of laser welding, installs second current collector dish 10 between electrode subassembly 2 and the shell 1, and electrode subassembly 2 is connected to second utmost point ear 9 one end, and the other end laser welding of second utmost point ear 9 second current collector dish 10, and second current collector dish 10 welding shell 1.
The cover assembly 3 is arranged above the groove 5, the cover assembly 3 comprises a sealing valve body 11, a ventilation valve body 13, a first insulating member 16 and a sealing member 6, the sealing member 6 is a hollow plastic member extending in the lower direction, the sealing member 6 is a circular plate-shaped structure formed by the sealing valve body 11 and the ventilation valve body 13, the middle of the sealing valve body 11 and the ventilation valve body 13 are welded, the first insulating member 16 is in a circular ring-shaped structure, the outer diameter of the first insulating member 16 is equal to the diameter of the sealing valve body 11 and the diameter of the ventilation valve body 13, the first insulating member 16 is positioned between the sealing valve body 11 and the ventilation valve body 13, the sealing member 6 covers the outer edges of the sealing valve body 11, the ventilation valve body 13 and the first insulating member 16, an extension part 4 is arranged between the electrode assembly 2 and the ventilation valve body 13, one end of the extension part 4 is welded to the ventilation valve body 13, the other end of the extension part 4 is integrally connected with a first collecting disc 8, the extension part 4 is positioned between the electrode assembly 2 and the ventilation valve body 13 in a folded shape, the shell 1 is more than 90 degrees inwards, and compresses the sealing member 6, and the shell 3 and the shell 1 form a sealed chamber.
The sealing valve body 11 is provided with a first convex part 12 which protrudes outwards, and the first convex part 12 is in a ring shape, so that the structural strength is enhanced.
The center of the ventilation valve body 13 is provided with a second convex part 14, the second convex part 14 is welded with the sealing valve body 11, 8 ventilation holes 15 are formed in the ventilation valve body 13, the ventilation holes 15 are distributed in a rotational symmetry mode, and the ventilation holes 15 are arranged so that gas can conveniently enter the ventilation valve body 13 and the sealing valve body 11 to expand to separate the ventilation valve body 13 and the sealing valve body 11.
A second insulating member 17 is arranged between the first current collecting disc 8 and the groove 5, and the second insulating member 17 covers the outer edges of the first tab 7 and the first current collecting disc 8.
The sealing valve body 11 and the ventilation valve body 13 are formed by punching aluminum plates or aluminum alloy plates.
The first insulating member 16 uses alumina ceramic or other high-strength insulating material.
The sealing member 6 may be injection molded from polypropylene (PP), polybutylene terephthalate (PBT), soluble Polytetrafluoroethylene (PFA), polyphenylene Sulfide (PPs), or other insulating and electrolyte corrosion resistant material.
The first current collecting tray 8 is formed by punching an aluminum plate or an aluminum alloy plate, and the second current collecting tray 10 is formed by punching a copper plate and then plating nickel or a copper-nickel composite plate.
Although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments or portions thereof without departing from the spirit and scope of the invention.
Claims (5)
1. A new-type battery monomer structure, includes one end open-ended shell (1), be provided with electrode subassembly (2) in the shell (1), its characterized in that: the electrode assembly structure is characterized in that an inwards-recessed groove (5) is formed in the shell (1), the groove (5) is located above the electrode assembly (2), a cover assembly (3) is arranged above the groove (5), the cover assembly (3) comprises a sealing valve body (11), a vent valve body (13), a first insulating member (16) and a sealing member (6), the sealing valve body (11) and the vent valve body (13) are both in a circular plate-shaped structure, the sealing valve body (11) is electrically connected with the middle of the vent valve body (13), the first insulating member (16) is in a circular ring-shaped structure, the outer diameter of the first insulating member (16) is equal to the diameter of the sealing valve body (11) and the diameter of the vent valve body (13), the first insulating member (16) is located between the sealing valve body (11) and the vent valve body (13), the sealing member (6) covers the outer edges of the sealing valve body (11), the vent valve body (13) and the first insulating member (16), an extending portion (4) is arranged between the electrode assembly (2) and the vent valve body (13), one end of the electrode assembly (2) is electrically connected with the extending portion (13), and the other end of the electrode assembly (2) is electrically connected with the extending portion (13), the housing (1) is bent inwards and presses the sealing element (6).
2. The novel cell structure of claim 1, wherein: the sealing valve body (11) is provided with a first convex part (12) protruding outwards, and the first convex part (12) is in a circular ring shape.
3. The novel battery cell structure of claim 1, wherein: the center of ventilative valve body (13) is provided with second convex part (14), second convex part (14) electricity is connected sealed valve body (11), be provided with a plurality of bleeder vents (15) on ventilative valve body (13), bleeder vent (15) are rotational symmetry and distribute.
4. The novel cell structure of claim 1, wherein: electrode subassembly (2) upper portion is provided with first utmost point ear (7) and first dish (8) that gathers current, first utmost point ear (7) one end electricity is connected electrode subassembly (2), the other end electricity of first utmost point ear (7) is connected first dish (8) that gathers current, first dish (8) electricity that gathers current is connected ventilative valve body (13), electrode subassembly (2) bottom is provided with second utmost point ear (9) and second dish (10) that gathers current, second utmost point ear (9) one end electricity is connected electrode subassembly (2), the other end electricity of second utmost point ear (9) is connected second dish (10) that gathers current, second dish (10) electricity that gathers current is connected shell (1).
5. The novel cell structure of claim 4, wherein: a second insulating member (17) is arranged between the first current collecting disc (8) and the groove (5), and the second insulating member (17) covers the outer edges of the first lug (7) and the first current collecting disc (8).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222422997.2U CN218334176U (en) | 2022-09-14 | 2022-09-14 | New-type battery monomer structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222422997.2U CN218334176U (en) | 2022-09-14 | 2022-09-14 | New-type battery monomer structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN218334176U true CN218334176U (en) | 2023-01-17 |
Family
ID=84834696
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202222422997.2U Active CN218334176U (en) | 2022-09-14 | 2022-09-14 | New-type battery monomer structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN218334176U (en) |
-
2022
- 2022-09-14 CN CN202222422997.2U patent/CN218334176U/en active Active
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| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |