CN215184323U - Explosion-proof type lithium battery shell - Google Patents
Explosion-proof type lithium battery shell Download PDFInfo
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- CN215184323U CN215184323U CN202121539565.9U CN202121539565U CN215184323U CN 215184323 U CN215184323 U CN 215184323U CN 202121539565 U CN202121539565 U CN 202121539565U CN 215184323 U CN215184323 U CN 215184323U
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- explosion
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- lithium battery
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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 invention discloses an explosion-proof lithium battery shell which comprises a lithium battery shell, wherein the lithium battery shell comprises an inner shell and an outer shell, the lower end of the inner shell is connected to the outer shell through a supporting pad, a space is reserved between the outer shell and the inner shell, a through hole is formed in the inner shell, a cover plate is arranged on the lithium battery shell, a notch for a positive electrode and a negative electrode of a lithium battery to penetrate through is formed in the cover plate, the middle of the cover plate is arranged in a protruding mode, an explosion-proof film is arranged under the protruding portion of the cover plate and embedded into the cover plate, and a drainage hole is formed in the protruding portion of the cover plate. The lithium battery shell is provided with the inner shell and the outer shell, the two layers of protection structures are arranged, the protection effect is better, meanwhile, the heat conducting performance of the inner shell is good, heat emitted by the lithium battery is favorably transmitted into air between the inner shell and the outer shell to be radiated, on the other hand, the explosion-proof membrane is arranged to protect the pressure in the shell, and when the pressure is increased and breaks through the explosion-proof membrane, the buffer area is used for buffering, so that the possibility of explosion is reduced.
Description
Technical Field
The invention relates to the technical field of lithium batteries, in particular to an explosion-proof lithium battery shell.
Background
The lithium battery has the advantages of light weight, small volume, high charging speed, large capacitance, longer service life, higher rated voltage, lower self-discharge rate, energy conservation and environmental protection, and is widely applied to daily life. However, the current lithium battery still has potential safety hazard, and in recent years that the lithium battery is used, the lithium battery often explodes in the charging process and the like. Therefore, an explosion-proof lithium battery shell is needed to protect the lithium battery.
Disclosure of Invention
The invention aims to provide an explosion-proof lithium battery shell with simple structure and high safety performance aiming at the defects in the background technology.
In order to achieve the purpose, the invention discloses an explosion-proof lithium battery shell, which adopts the following technical scheme:
the utility model provides an explosion-proof type lithium cell shell, includes lithium cell casing, lithium cell casing includes interior casing and shell body, interior casing lower extreme passes through supporting pad connection in the shell body, leave the interval between shell body and the interior casing, the through-hole has been seted up on the interior casing, be provided with the apron on the lithium cell casing, be provided with on the apron and supply lithium cell positive and negative electrode to wear out the breach, the protruding setting that makes progress in the middle part of the apron, be provided with the rupture membrane under the bulge of apron, the rupture membrane embedding the apron, be provided with the discharge orifice on the bulge of apron.
The explosion-proof lithium battery shell is further improved in that a second explosion-proof film is arranged between the inner shell and the outer shell, the second explosion-proof film is positioned above the through hole, a space is reserved between the second explosion-proof film and the cover plate, a second vent hole is formed in the cover plate, and the second vent hole is positioned above the distance between the outer shell and the inner shell.
The explosion-proof lithium battery shell is further improved in that an annular limiting groove is formed below the protruding part on the cover plate, the explosion-proof membrane is embedded in the annular limiting groove, a propping piece is arranged on the wall of the annular limiting groove and comprises a spring and a top plate connected with the spring, and friction grains are arranged on the surface of the top plate, which is in contact with the explosion-proof membrane.
The explosion-proof lithium battery shell is further improved in that the groove wall of the annular limiting groove is obliquely tightened and distributed.
The explosion-proof lithium battery shell is further improved in that the inner shell and the support cushion are provided with graphite layers.
The explosion-proof lithium battery shell is further improved in that the shell body is an explosion-proof plate.
Compared with the prior art, the invention has the beneficial effects that:
the lithium battery shell is provided with the inner shell and the outer shell, the two layers of protection structures are arranged, the protection effect is better, meanwhile, the heat conducting performance of the inner shell is good, heat emitted by the lithium battery is favorably transmitted into air between the inner shell and the outer shell to be radiated, on the other hand, the explosion-proof membrane is arranged to protect the pressure in the shell, and when the pressure is increased and breaks through the explosion-proof membrane, the buffer area is used for buffering, so that the possibility of explosion is reduced.
Drawings
FIG. 1 is a schematic structural view of the present invention;
in the figure: 1 interior casing, 2 outer casings, 3 supporting pads, 4 through-holes, 5 apron, 6 rupture membranes, 7 second rupture membranes, 8 discharge orifice, 9 second discharge orifice, 10 springs, 11 roofs.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
As shown in fig. 1, an explosion-proof lithium battery shell, including lithium battery shell, lithium battery shell includes interior casing 1 and shell body 2, interior casing lower extreme passes through supporting pad 3 and connects in the shell body, leave the interval between shell body and the interior casing, through-hole 4 has been seted up on the interior casing, be provided with apron 5 on the lithium battery shell, it wears out the breach to be provided with the positive negative electrode that supplies the lithium cell on the apron, the setting of upwards protrusion in apron middle part, be provided with rupture membrane 6 under the bulge of apron, the rupture membrane embedding the apron, be provided with discharge orifice 8 on the bulge of apron. The inner shell is used for accommodating the lithium battery, heat generated by the lithium battery can be transferred to the air between the inner shell and the outer shell to dissipate heat, the heat dissipation effect is good, and meanwhile, the explosion-proof membrane is arranged to protect pressure. Further, be provided with second rupture membrane 7 between interior casing and the shell body, the second rupture membrane is located the through-hole top, leave the space between second rupture membrane and the apron, be provided with second discharge orifice 9 on the apron, second discharge orifice is located the interval top between shell body and the interior casing. The arrangement of the explosion-proof film and the arrangement of the pressure buffer area are increased, so that the protection and treatment of the pressure generated by the lithium battery are realized, and the possibility of explosion is reduced. Specifically, bulge below is provided with annular spacing groove on the apron, the explosion-proof membrane inlays in annular spacing inslot, be provided with on the cell wall of annular spacing groove and support the piece, support the piece including spring 10 and with spring coupling's roof 11, be provided with friction line on the face of roof and explosion-proof membrane contact. The groove walls of the annular limiting grooves are obliquely tightened and distributed (not shown in the figure). The explosion-proof membrane is limited and mounted, and when the explosion-proof membrane is broken by the increased pressure in the inner shell, the explosion-proof membrane is convenient to replace. Be provided with the graphite layer on interior casing, the back-up pad, carry out efficient heat conduction. The shell body is an explosion-proof plate. The outer shell performs the final protection.
The working principle of the invention is as follows: lithium cell during operation, can produce the heat, interior casing dispels the heat between with the heat transfer of inside to interior outer casing, and simultaneously, also be accompanied with the increase of pressure in the interior casing, when pressure is big to breaking rupture membrane and second rupture membrane, the air of protruding part department on the apron and the air between apron and the second rupture membrane can cushion the interior gas of rushing out of casing, reduce pressure, reduce the possibility of explosion, carry out ultimate protection by the shell body at last, wholly realize the explosion-proof to the lithium cell.
It will be evident to those skilled in the art that the invention is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential attributes thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.
Claims (6)
1. An explosion-proof type lithium battery shell which characterized in that: including lithium cell casing, lithium cell casing includes interior casing and shell body, interior casing lower extreme passes through the supporting pad to be connected in the shell body, leave the interval between shell body and the interior casing, the through-hole has been seted up on the interior casing, be provided with the apron on the lithium cell casing, be provided with on the apron and supply lithium cell positive and negative electrode to wear out the breach, the setting of the upwards protrusion in apron middle part, be provided with the rupture membrane under the bulge of apron, the rupture membrane embedding the apron, be provided with the discharge orifice on the bulge of apron.
2. The explosion-proof lithium battery shell according to claim 1, wherein: the explosion-proof structure is characterized in that a second explosion-proof film is arranged between the inner shell and the outer shell and is located above the through hole, a space is reserved between the second explosion-proof film and the cover plate, a second vent hole is formed in the cover plate and is located above the space between the outer shell and the inner shell.
3. The explosion-proof lithium battery shell according to claim 1, wherein: protruding portion below is provided with annular spacing groove on the apron, the explosion-proof membrane inlays in annular spacing inslot, be provided with the piece of keeping silent on the cell wall in annular spacing groove, the piece of keeping silent includes the spring and with spring coupling's roof, be provided with friction line on the face of roof and explosion-proof membrane contact.
4. The explosion-proof lithium battery shell according to claim 3, wherein: and the groove walls of the annular limiting grooves are obliquely tightened and distributed.
5. The explosion-proof lithium battery shell according to claim 1, wherein: and the inner shell and the support pad are provided with graphite layers.
6. The explosion-proof lithium battery shell according to claim 1, wherein: the shell body is an explosion-proof plate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121539565.9U CN215184323U (en) | 2021-07-07 | 2021-07-07 | Explosion-proof type lithium battery shell |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121539565.9U CN215184323U (en) | 2021-07-07 | 2021-07-07 | Explosion-proof type lithium battery shell |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215184323U true CN215184323U (en) | 2021-12-14 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202121539565.9U Active CN215184323U (en) | 2021-07-07 | 2021-07-07 | Explosion-proof type lithium battery shell |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN215184323U (en) |
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2021
- 2021-07-07 CN CN202121539565.9U patent/CN215184323U/en active Active
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