CN214378738U - Battery explosion-proof valve and lithium ion battery - Google Patents
Battery explosion-proof valve and lithium ion battery Download PDFInfo
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- CN214378738U CN214378738U CN202120667067.6U CN202120667067U CN214378738U CN 214378738 U CN214378738 U CN 214378738U CN 202120667067 U CN202120667067 U CN 202120667067U CN 214378738 U CN214378738 U CN 214378738U
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- explosion
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- liquid injection
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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
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Abstract
The utility model relates to a new energy battery structural design field specifically relates to a battery explosion-proof valve and lithium ion battery. The utility model provides a battery explosion-proof valve, includes explosion-proof piece and notes liquid orifice plate, explosion-proof piece is provided with the installation through-hole, it is fixed in to annotate the liquid orifice plate installation through-hole department, it is provided with the notes liquid hole that is used for pouring into electrolyte to the battery on the liquid orifice plate to annotate. Battery explosion-proof valve, will annotate the liquid orifice plate setting on the explosion-proof piece, saved the space that is used for installing on the battery case and annotates the liquid orifice plate, the space of this part is used for increasing the area of explosion-proof piece, can effectively improve the accuse pressure ability of explosion-proof piece to effectively improve the security of lithium cell.
Description
Technical Field
The utility model relates to a new energy battery structural design field specifically relates to a battery explosion-proof valve and lithium ion battery.
Background
With the increasing maturity of lithium ion battery technology, lithium ion batteries are widely used in the field of electric vehicles as power batteries. The structural part of the lithium ion battery is also an important component of the lithium ion power battery, and the lithium battery needs to be filled with electrolyte through a liquid filling hole in the manufacturing process and then the liquid filling hole is sealed; the explosion-proof valve is used for the pressure release of lithium cell to exhaust, and the explosion-proof valve all installs the top cap at the casing or the bottom of casing usually, annotates the liquid hole and sets up the next door at the explosion-proof valve, and current explosion-proof valve is limited because of the limited size of installation space, causes the exhaust capacity to be limited, is unfavorable for lithium ion battery's safe handling.
SUMMERY OF THE UTILITY MODEL
The utility model aims at overcoming the explosion-proof valve that prior art exists and because of the not enough problem of pressure release ability that the area occupation undersize caused, providing a battery explosion-proof valve, this battery explosion-proof valve will be original to be set up the notes liquid orifice plate setting on explosion-proof piece next door for the area grow of explosion-proof piece can effectively improve pressure release ability.
In order to achieve the above object, an aspect of the utility model provides a battery explosion-proof valve, include the explosion-proof piece and annotate the liquid orifice plate, the explosion-proof piece is provided with the installation through-hole, it is fixed in to annotate the liquid orifice plate installation through-hole department, it is provided with the notes liquid hole that is used for to the inside electrolyte that pours into of battery into on the liquid orifice plate to annotate.
Preferably, the liquid injection pore plate is an aluminum liquid injection pore plate, and the explosion-proof sheet is an aluminum explosion-proof sheet.
Preferably, the liquid injection hole plate is welded at the mounting through hole.
Preferably, the middle part of the liquid injection pore plate is sunken downwards to form a groove, and the liquid injection pore is formed in the groove.
Preferably, the liquid injection hole is formed in the middle of the groove.
Preferably, the explosion-proof sheet is provided with a notch.
Preferably, the nick is a circle surrounding the outer side of the liquid injection hole plate.
Preferably, the bottom of the outer side of the liquid injection pore plate is provided with a ring groove, and the edge of the mounting through hole is welded to the ring groove.
Preferably, the liquid injection pore plate blocks the installation through hole by welding.
The utility model discloses the second aspect provides a lithium ion battery, including battery housing with the battery explosion-proof valve, the battery explosion-proof valve sets up on the battery housing.
Battery explosion-proof valve, will annotate the liquid orifice plate setting on the explosion-proof piece, saved the space that is used for installing on the battery case and annotates the liquid orifice plate, the space of this part is used for increasing the area of explosion-proof piece, can effectively improve the accuse pressure ability of explosion-proof piece to effectively improve the security of lithium cell.
Drawings
Fig. 1 is a schematic structural view of a battery explosion-proof valve according to an embodiment of the present invention;
FIG. 2 is a schematic sectional structure view of the explosion-proof valve of the battery;
fig. 3 is a schematic diagram of the structure of the liquid injection orifice plate.
Description of the reference numerals
1-explosion-proof sheet, 2-liquid injection pore plate, 3-liquid injection pore, 6-nick, 7-installation through hole and 8-ring groove.
Detailed Description
The following detailed description of the embodiments of the present invention will be made with reference to the accompanying drawings. It is to be understood that the description of the embodiments herein is for purposes of illustration and explanation only and is not intended to limit the invention.
In the present invention, unless otherwise specified, the use of directional terms such as "upper, lower, left, and right" generally means upper, lower, left, and right as illustrated with reference to the accompanying drawings; "inner and outer" generally refer to the inner and outer relative to the profile of the components themselves; "distal and proximal" generally refer to distance relative to the contour of the components themselves.
The utility model provides an aspect provides a battery explosion-proof valve, include explosion-proof piece 1 and annotate liquid orifice plate 2, explosion-proof piece 1 is provided with installation through-hole 7, it is fixed in to annotate liquid orifice plate 2 installation through-hole 7 department, it is provided with the notes liquid hole 3 that is used for to the inside electrolyte that injects of battery on the liquid orifice plate 2 to annotate. Battery explosion-proof valve, will annotate the liquid orifice plate setting on the explosion-proof piece, saved the space that is used for installing on the battery case and annotates the liquid orifice plate, the space of this part is used for increasing the area of explosion-proof piece, can effectively improve the accuse pressure ability of explosion-proof piece to effectively improve the security of lithium cell. Preferably, the liquid injection pore plate 2 blocks the installation through hole 7.
Preferably, the liquid injection pore plate 2 is an aluminum liquid injection pore plate 2, and the explosion-proof sheet 1 is an aluminum explosion-proof sheet. The aluminum plate is soft in texture, low in strength and easy to deform, can effectively deal with pressure fluctuation inside the battery, improves the pressure relief capacity of the power battery, and further improves the safety of the power battery.
Preferably, as shown in fig. 1 and 2, the liquid injection hole plate 2 is welded at the installation through hole 7. And the liquid injection pore plate 2 is welded on the explosion-proof sheet 1 by laser. The welding connection mode is firm in connection, and the service life of the battery is effectively prolonged.
Preferably, the middle part of the liquid injection pore plate 2 is sunken downwards to form a groove, and the liquid injection pore 3 is arranged on the groove. The battery needs to utilize notes liquid hole 3 to carry out the electrolyte and pours into, and after the electrolyte injection was accomplished, needs the shutoff to annotate liquid hole 3 in order to avoid electrolyte to leak by annotating liquid hole 3. And after the liquid injection is finished, the liquid injection hole is welded and sealed by an aluminum nail. The groove is favorable for plugging the liquid injection hole 3, the battery shell surface is prevented from forming a bulge after the liquid injection hole 3 is plugged, the smoothness of the battery surface is improved, and the battery is convenient to install and use.
Preferably, the liquid injection hole 3 is arranged in the middle of the groove. The liquid injection hole 3 formed in the middle of the groove facilitates the injection of electrolyte and the sealing of the liquid injection hole 3 by welding aluminum nails.
Preferably, the explosion-proof sheet 1 is provided with a score 6. The part of the anti-explosion piece 1 provided with the nick 6 is relatively weak, when the internal pressure of the power battery reaches an explosion point, the nick 6 is torn by huge pressure inside the battery to form an air outlet so as to release the pressure, so that the explosion of the battery is avoided, and the safety performance of the battery is effectively improved. In addition, the explosion-proof sheet 1 can be provided with other exhaust structures for pressure relief. Under the condition that the purpose of pressure relief at an explosion point can be achieved, the manufacturing cost of the nick 6 is relatively low, and the production cost of the battery can be effectively controlled.
Preferably, the nick 6 is a circle surrounding the outer side of the liquid injection pore plate 2. Preferably, the nick 6 is concentrically arranged with the liquid injection hole 3, so that the force and the air leakage of the explosion-proof sheet are uniform, and the safety of the battery is improved. The score 6 of the present invention includes but is not limited to this shape.
Preferably, as shown in fig. 3, a ring groove 8 is formed in the bottom of the outer side of the liquid injection pore plate 2, and the edge of the installation through hole 7 is welded to the ring groove 8. Before welding the liquid injection pore plate 2, the liquid injection pore plate 2 needs to be installed and positioned on the explosion-proof sheet 1. The structure of annular 8 is convenient for annotate the location of liquid orifice plate 2, effectively improves welding precision and welding efficiency, improves battery production efficiency.
Preferably, the liquid injection pore plate 2 plugs the installation through hole 7 by welding. Under normal conditions, the battery explosion-proof valve is set to be a sealing structure to avoid electrolyte leakage. When the battery needs to be decompressed, the nick 6 is torn to form a decompression opening for decompression.
The utility model discloses the second aspect provides a lithium ion battery, including battery housing with the battery explosion-proof valve, the battery explosion-proof valve sets up on the battery housing. Battery explosion-proof valve, will annotate the liquid orifice plate setting on the explosion-proof piece, saved the space that is used for installing on the battery case and annotates the liquid orifice plate, the space of this part is used for increasing the area of explosion-proof piece, can effectively improve the accuse pressure ability of explosion-proof piece to effectively improve the security of lithium cell.
The preferred embodiments of the present invention have been described in detail with reference to the accompanying drawings, but the present invention is not limited thereto. The technical scheme of the utility model in the technical conception scope, can be right carry out multiple simple variant. Including each of the specific features, are combined in any suitable manner. In order to avoid unnecessary repetition, the present invention does not separately describe various possible combinations. These simple variations and combinations should also be considered as disclosed in the present invention, all falling within the scope of protection of the present invention.
Claims (10)
1. The utility model provides a battery explosion-proof valve, its characterized in that includes explosion-proof piece (1) and annotates liquid orifice plate (2), explosion-proof piece (1) is provided with installation through-hole (7), it is fixed in to annotate liquid orifice plate (2) installation through-hole (7) department, it is provided with on orifice plate (2) and is used for annotating liquid hole (3) to the inside electrolyte that pours into of battery into to annotate.
2. The battery explosion-proof valve according to claim 1, wherein the liquid injection pore plate (2) is an aluminum liquid injection pore plate (2), and the explosion-proof sheet (1) is an aluminum explosion-proof sheet.
3. The battery explosion-proof valve according to claim 2, wherein the liquid injection orifice plate (2) is welded at the mounting through hole (7).
4. The battery explosion-proof valve according to claim 1, characterized in that the middle of the liquid injection hole plate (2) is recessed downwards to form a groove, and the liquid injection hole (3) is arranged on the groove.
5. The battery explosion-proof valve according to claim 4, wherein the liquid injection hole (3) is provided in the middle of the groove.
6. The battery explosion-proof valve according to claim 1, wherein the explosion-proof sheet (1) is provided with scores (6).
7. The battery explosion-proof valve according to claim 6, wherein the score (6) is a circle surrounding the liquid injection hole plate (2).
8. The battery explosion-proof valve according to claim 1, wherein the bottom of the outer side of the liquid injection pore plate (2) is provided with a ring groove (8), and the edge of the mounting through hole (7) is welded to the ring groove (8).
9. The battery explosion-proof valve according to claim 3, wherein the liquid injection orifice plate (2) blocks the mounting through-hole (7) by welding.
10. A lithium ion battery comprising a battery housing and the battery explosion vent of any of claims 1-9, the battery explosion vent being disposed on the battery housing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120667067.6U CN214378738U (en) | 2021-03-31 | 2021-03-31 | Battery explosion-proof valve and lithium ion battery |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120667067.6U CN214378738U (en) | 2021-03-31 | 2021-03-31 | Battery explosion-proof valve and lithium ion battery |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN214378738U true CN214378738U (en) | 2021-10-08 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202120667067.6U Active CN214378738U (en) | 2021-03-31 | 2021-03-31 | Battery explosion-proof valve and lithium ion battery |
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| CN (1) | CN214378738U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2023151321A1 (en) * | 2022-02-10 | 2023-08-17 | 湖北亿纬动力有限公司 | Explosion-proof valve, battery cover, and battery |
-
2021
- 2021-03-31 CN CN202120667067.6U patent/CN214378738U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2023151321A1 (en) * | 2022-02-10 | 2023-08-17 | 湖北亿纬动力有限公司 | Explosion-proof valve, battery cover, and battery |
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