CN113659254A - Cap for explosion-proof battery - Google Patents
Cap for explosion-proof battery Download PDFInfo
- Publication number
- CN113659254A CN113659254A CN202110959818.6A CN202110959818A CN113659254A CN 113659254 A CN113659254 A CN 113659254A CN 202110959818 A CN202110959818 A CN 202110959818A CN 113659254 A CN113659254 A CN 113659254A
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- CN
- China
- Prior art keywords
- explosion
- proof
- battery
- aluminum sheet
- clamping groove
- 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.)
- Pending
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
- H01M50/10—Primary casings, jackets or wrappings of a single cell or a single battery
- H01M50/14—Primary casings, jackets or wrappings of a single cell or a single battery for protecting against damage caused by external factors
- H01M50/143—Fireproof; Explosion-proof
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- 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
Abstract
The invention relates to the technical field of lithium batteries, in particular to a cover cap for an explosion-proof battery, which comprises a connecting aluminum sheet and an explosion-proof sheet arranged on the connecting aluminum sheet, wherein an isolation ring is arranged between the explosion-proof sheet and the connecting aluminum sheet, and a first clamping mechanism for clamping the isolation ring on the explosion-proof sheet is arranged between the explosion-proof sheet and the isolation ring.
Description
Technical Field
The invention relates to the technical field of lithium batteries, in particular to a cap for an explosion-proof battery.
Background
A lithium battery is a type of battery using a nonaqueous electrolyte solution, using lithium metal or a lithium alloy as a positive/negative electrode material. Lithium cell block explosion-proof piece and the connection aluminum sheet of setting on the explosion-proof piece, be provided with the cage washer between explosion-proof piece and the connection aluminum sheet, current lithium cell can produce the vibration in using or the transportation, and the cage washer can run out between explosion-proof piece and connection aluminum sheet, lead to connecting aluminum sheet and explosion-proof piece short circuit phenomenon to appear, thereby influence the safe handling of lithium cell, the cage washer does not have spacing meeting appearance to break away from explosion-proof piece and connection aluminum sheet in process of production simultaneously, influence the production quality of lithium cell.
Disclosure of Invention
The technical problem to be solved by the invention is as follows: in order to solve the problem that the existing lithium battery can vibrate in the use or transportation process, the isolating ring can run out between the explosion-proof sheet and the connecting aluminum sheet to cause the short circuit phenomenon of the connecting aluminum sheet and the explosion-proof sheet, thereby influencing the safe use of the lithium battery, and meanwhile, the isolating ring is not limited to cause the separation from the explosion-proof sheet and the connection of the aluminum sheet in the production process, so that the production quality of the lithium battery is influenced, and the cap for the explosion-proof battery is provided.
The technical scheme adopted by the invention for solving the technical problems is as follows: the utility model provides a block for explosion-proof battery, is including connecting the aluminum sheet and setting up the explosion-proof piece on connecting the aluminum sheet, the explosion-proof piece with be provided with the cage between the connection aluminum sheet, the explosion-proof piece with be provided with between the cage and be used for the first clamping mechanism of cage joint on the explosion-proof piece.
According to the invention, the explosion-proof sheet and the isolation ring are clamped together through the first clamping structure, so that the separation phenomenon caused by vibration between the explosion-proof sheet and the isolation ring is effectively prevented, the safety of the battery is influenced, meanwhile, the installation between the explosion-proof sheet and the isolation ring is facilitated, and the production quality of the battery is improved.
In order to realize the first clamping mechanism, furthermore, one of the explosion-proof sheet and the isolation ring is provided with a first clamping groove, and the other of the explosion-proof sheet and the isolation ring is matched with the first clamping groove and is placed in the first clamping groove. One of the two clamping grooves is provided with the first clamping groove, and the other clamping groove is clamped in the first clamping groove, so that the structure is simple, and the processing is convenient.
In order to prevent that the vibration leads to connecting aluminum sheet and cage to throw off, furtherly, connect the aluminum sheet with be provided with between the cage and be used for connecting the second clamping mechanism of cage joint on the aluminum sheet. Will connect the joint between aluminum sheet and the cage through the second joint structure and be in the same place, effectively prevent to connect like this because the vibration breaks away from the phenomenon between aluminum sheet and the cage, influence the security of battery, also be convenient for simultaneously connect the installation between aluminum sheet and the cage, improve battery production quality.
In order to realize the second clamping mechanism, a second clamping groove is formed in one of the connecting aluminum sheet and the isolating ring, and the other of the connecting aluminum sheet and the isolating ring is matched with the second clamping groove and is arranged in the second clamping groove. One of the two clamping grooves is provided with the second clamping groove, and the other clamping groove is clamped in the second clamping groove, so that the structure is simple, and the processing is convenient.
In order to prevent mutual displacement between the connecting aluminum sheet or the isolating ring, furthermore, a protrusion for limiting the displacement of the other of the connecting aluminum sheet and the isolating ring is arranged in the second clamping groove. Through set up the arch in the second draw-in groove, the arch plays the displacement of restriction in the second draw-in groove.
Have gaseous production after the battery internalization, also be exactly for the inside gas that produces such as adding raw materials or liquid of battery, gaseous being located battery inside and unable discharge after the current battery installation, can influence the normal use of battery for a long time, furtherly, set up the pressure release mouth that is used for discharging the inside gas of battery on the explosion-proof piece. Through set up the pressure release mouth on the explosion-proof piece and can in time with the inside gaseous exhaust of battery, guarantee that battery internal pressure is reliable and stable, can not influence the battery and normally use.
In order to ensure the use safety of the battery, the explosion-proof sheet is provided with a rupture notch. The rupture notch is for when battery internal pressure is too big, rupture notch can break explosion-proof piece extrusion fracture under certain meeting pressure effect and split to discharge battery internal pressure, improve the security that the battery used.
In order to prevent the rupture notch from influencing the pressure relief opening, further, the rupture notch is of an arc structure with one open end, and the pressure relief opening is located at the opening of the rupture notch. The arc-shaped rupture notch is arranged, and the pressure relief opening is located at the opening of the rupture notch, so that the rupture notch and the pressure relief opening are prevented from colliding in order to achieve the blasting consistency.
For use in battery jetting experiments to reach battery related performance, further, the rupture score is circular. The rupture notch is made into a circular shape, so that the explosion-proof sheet is conveniently separated from the rupture notch integrally when the air pressure rises, and the relevant performance data of the battery required by the experiment can be obtained.
The invention has the beneficial effects that: when the cap for the explosion-proof battery is used, the explosion-proof sheet and the isolation ring are clamped together through the first clamping structure, so that the separation phenomenon caused by vibration between the explosion-proof sheet and the isolation ring is effectively prevented, the safety of the battery is influenced, meanwhile, the installation between the explosion-proof sheet and the isolation ring is facilitated, the production quality of the battery is improved, the problems that the existing lithium battery can vibrate in the use or transportation process, the isolation ring can run out between the explosion-proof sheet and the connecting aluminum sheet, the short circuit phenomenon of the connecting aluminum sheet and the explosion-proof sheet is caused, the safe use of the lithium battery is influenced, and the separation of the explosion-proof sheet and the connecting aluminum sheet can be caused by the fact that the isolation ring is not limited in the production process, and the production quality of the lithium battery is influenced are solved.
Drawings
The invention is further illustrated with reference to the following figures and examples.
FIG. 1 is a schematic structural view of embodiment 1 of the present invention;
FIG. 2 is an enlarged view of a portion of FIG. 1;
FIG. 3 is an enlarged view of a portion B of FIG. 1;
fig. 4 is a bottom view of the rupture disk in example 1 of the present invention;
FIG. 5 is a schematic structural view of example 2 of the present invention;
fig. 6 is a bottom view of the rupture disk in example 2 of the present invention.
In the figure: 1. explosion-proof piece, 2, connection aluminum sheet, 3, cage, 4, first draw-in groove, 5, second draw-in groove, 6, arch, 7, pressure release mouth, 8, fracture grooving.
Detailed Description
The invention is described in more detail below with reference to the following examples:
the present invention is not limited to the following embodiments, and those skilled in the art can implement the present invention in other embodiments according to the disclosure of the present invention, or make simple changes or modifications on the design structure and idea of the present invention, and fall into the protection scope of the present invention. It should be noted that the embodiments and features of the embodiments may be combined with each other without conflict.
In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like, indicate orientations or positional relationships based on those shown in the drawings, and are used only for convenience in describing the present invention and for simplicity in description, and do not indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and thus, are not to be construed as limiting the present invention. Furthermore, the terms "first", "second", etc. are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first," "second," etc. may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless otherwise specified.
In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "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 by those of ordinary skill in the art through specific situations.
Example 1
As shown in fig. 1-4, a cap for an explosion-proof battery comprises a connection aluminum sheet 2 and an explosion-proof sheet 1 arranged on the connection aluminum sheet 2, wherein a separation ring 3 is arranged between the explosion-proof sheet 1 and the connection aluminum sheet 2, and a first clamping mechanism for clamping the separation ring 3 on the explosion-proof sheet 1 is arranged between the explosion-proof sheet 1 and the separation ring 3.
The explosion-proof sheet 1 is provided with a first clamping groove 4, the isolating ring 3 is matched with the first clamping groove 4 and is arranged in the first clamping groove 4, of course, the isolating ring 3 is provided with the first clamping groove 4, and the explosion-proof sheet 1 is matched with the first clamping groove 4 and is arranged in the first clamping groove 4
Connect aluminum sheet 2 with be provided with between 3 spacing rings and be used for connecting 3 joint of spacing ring second clamping mechanism on connecting aluminum sheet 2
The connecting aluminum sheet 2 is provided with a second clamping groove 5, the isolating ring 3 is matched with the second clamping groove 5 and is arranged in the second clamping groove, certainly, the isolating ring 3 is provided with the second clamping groove 5, and the connecting aluminum sheet 2 is matched with the second clamping groove 5 and is arranged in the second clamping groove.
And a bulge 6 for limiting the displacement of the connecting aluminum sheet 2 or the isolating ring 3 is arranged on the inner side wall of the second clamping groove 5.
The explosion-proof sheet 1 is provided with a pressure relief opening 7 for discharging gas in the battery. The pressure relief opening 7 is used for exhausting redundant gas in the lithium battery in the production process, and the pressure relief opening 7 is plugged by a plug after the gas is exhausted.
The explosion-proof sheet 1 is provided with a rupture notch 8.
The rupture notch 8 is a major arc or a minor arc, and the pressure relief opening 7 is positioned at the opening of the rupture notch 8.
When the cap for the explosion-proof battery is used, the first clamping groove 4 limits the displacement between the explosion-proof sheet 1 and the isolating ring 3, the stability and the reliability of the battery in the transportation process are ensured, the phenomenon that the explosion-proof sheet 1 and the isolating ring 3 are separated due to vibration is avoided, the installation position between the explosion-proof sheet 1 and the isolating ring 3 is ensured in the installation process, the production quality of the battery is improved, the pressure relief opening 7 is used for timely discharging gas generated in the filling raw materials and the like in the battery, the rupture notch 8 is used for timely discharging the gas due to overlarge internal pressure and ensuring the safety of the battery, the rupture notch 8 is designed, the second clamping groove 5 limits the displacement between the connecting aluminum sheet 2 and the isolating ring 3, the stability and the reliability of the battery in the transportation process are ensured, and the phenomenon that the separation between the connecting aluminum and the isolating ring 3 is avoided due to vibration, meanwhile, the installation position between the connecting aluminum and the isolating ring 3 is ensured in the installation process, and the production quality of the battery is improved.
Example 2
Example 2 differs from example 1 in that: as shown in fig. 5-6, the fracture score 8 is circular. In order to obtain relevant data during battery experiments, the rupture notch 8 is ensured to rupture consistently due to overlarge internal air pressure of the battery, the battery is completely exploded and separated, and the rupture notch 8 needs to be made into a whole circle.
In light of the foregoing description of the preferred embodiment of the present invention, it is to be understood that numerous changes and modifications may be made without departing from the spirit and scope of the invention as defined by the appended claims. The technical scope of the present invention is not limited to the content of the specification, and must be determined according to the scope of the claims.
Claims (9)
1. The utility model provides a block for explosion-proof battery, is including connecting aluminum sheet (2) and setting explosion-proof piece (1) on connecting aluminum sheet (2), explosion-proof piece (1) and be provided with between connecting aluminum sheet (2) cage (3), its characterized in that: the explosion-proof piece (1) with be provided with between isolation ring (3) and be used for the first clamping mechanism of isolation ring (3) joint on explosion-proof piece (1).
2. A cap for an explosion-proof battery as set forth in claim 1, characterized in that: one of the explosion-proof piece (1) and the isolating ring (3) is provided with a first clamping groove (4), and the other of the explosion-proof piece (1) and the isolating ring (3) is matched with the first clamping groove (4) and is arranged in the first clamping groove.
3. A cap for an explosion-proof battery as set forth in claim 1, characterized in that: connect aluminum sheet (2) with be provided with between spacing ring (3) and be used for connecting the second clamping mechanism of spacing ring (3) joint on connecting aluminum sheet (2).
4. A cap for an explosion-proof battery as set forth in claim 3, characterized in that: one of the connecting aluminum sheet (2) and the isolating ring (3) is provided with a second clamping groove (5), and the other of the connecting aluminum sheet (2) and the isolating ring (3) is matched with the second clamping groove (5) and is arranged in the second clamping groove.
5. A cap for an explosion-proof battery according to claim 4, characterized in that: and a bulge (6) for limiting the displacement of the other one of the connecting aluminum sheet (2) and the isolating ring (3) is arranged in the second clamping groove (5).
6. A cap for an explosion-proof battery as set forth in claim 1, characterized in that: and the explosion-proof sheet (1) is provided with a pressure relief opening (7) for discharging gas in the battery.
7. A cap for an explosion-proof battery as set forth in claim 6, characterized in that: the explosion-proof sheet (1) is provided with a rupture notch groove (8).
8. A cap for an explosion-proof battery as set forth in claim 7, characterized in that: the rupture notch groove (8) is of an arc structure with one open end, and the pressure relief port (7) is located at the opening of the rupture notch groove (8).
9. A cap for an explosion-proof battery as set forth in claim 7, characterized in that: the rupture groove (8) is circular.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110959818.6A CN113659254A (en) | 2021-08-20 | 2021-08-20 | Cap for explosion-proof battery |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110959818.6A CN113659254A (en) | 2021-08-20 | 2021-08-20 | Cap for explosion-proof battery |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN113659254A true CN113659254A (en) | 2021-11-16 |
Family
ID=78481571
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110959818.6A Pending CN113659254A (en) | 2021-08-20 | 2021-08-20 | Cap for explosion-proof battery |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN113659254A (en) |
-
2021
- 2021-08-20 CN CN202110959818.6A patent/CN113659254A/en active Pending
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