CN210778859U - Explosion-proof lithium ion battery - Google Patents
Explosion-proof lithium ion battery Download PDFInfo
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- CN210778859U CN210778859U CN201921964366.5U CN201921964366U CN210778859U CN 210778859 U CN210778859 U CN 210778859U CN 201921964366 U CN201921964366 U CN 201921964366U CN 210778859 U CN210778859 U CN 210778859U
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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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- 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
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
- Y02P70/50—Manufacturing or production processes characterised by the final manufactured product
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Abstract
The utility model belongs to the technical field of lithium ion battery makes, especially, relate to an explosion-proof lithium ion battery, including electric core, the lid that is used for holding the casing of electric core and is used for covering the casing, still be provided with explosion-proof structure in the lid, explosion-proof structure is including setting up the explosion-proof plate at electric core top, and the explosion-proof hole has been seted up on the surface of explosion-proof plate, and the top in explosion-proof hole still is provided with the elastic component, and the elastic component can cover the explosion-proof hole completely. The utility model discloses an explosion-proof lithium ion battery has explosion-proof structural design, and when high temperature inflation and gas production appeared in the battery, the pressure was too big in the battery, when reaching a definite value, explosion-proof structure began work pressure release, and the gas of electricity core the inside transmits for the elastic component through explosion-proof hole, and the elastic component upwards pops out, and gas outwards leaks, through lid exhaust gas. After the internal and external pressure of the battery reaches balance, the elastic piece in the explosion-proof structure rebounds and closes, so that the electrolyte does not flow outwards, and the external air cannot enter the battery.
Description
Technical Field
The utility model belongs to the technical field of lithium ion battery makes, especially, relate to an explosion-proof lithium ion battery.
Background
The existing Bluetooth equipment or the health medical electronic equipment which is commonly used for close-fitting use of a human body in the market is internally provided with a metal micro-button lithium ion battery, and the shell of the micro-button lithium ion battery is made of a steel shell or an aluminum shell.
The lithium ion battery often generates gas in improper use process, so that the internal pressure of the battery is increased, accidents such as bursting are generated, electric equipment is damaged, and even personal injury is caused in serious cases.
The common metal micro-button lithium ion battery explosion-proof design is the structure disclosed in patent application number 201320748357.9, and the explosion-proof structure is formed by stamping an aluminum sheet with a safety opening. However, due to the low machining precision, the air pressure control is not accurate, and the opening is often delayed when the pressure is not before or when the pressure exceeds the range. Moreover, the explosion-proof structure can only be used once, and cannot be closed again after being opened, so that the internal electrolyte flows out to cause corrosion. In addition, with the entering of outside air, the moisture in the air can cause the power supply of the battery to lose efficacy immediately, and if the battery is not replaced in time, the electric equipment can be corroded and damaged.
SUMMERY OF THE UTILITY MODEL
The utility model aims to provide a: aiming at the defects of the prior art, an explosion-proof lithium ion battery is provided to solve the problem that the explosion-proof structure of the lithium ion battery in the prior art can not be reused.
In order to achieve the above purpose, the utility model adopts the following technical scheme:
the utility model provides an explosion-proof lithium ion battery, includes electric core, is used for holding the casing of electric core with be used for covering the lid of casing, still be provided with explosion-proof structure in the lid, explosion-proof structure is including setting up the explosion-proof board at electric core top, explosion-proof hole has been seted up on the surface of explosion-proof board, the top in explosion-proof hole still is provided with the elastic component, the elastic component can with explosion-proof hole covers completely. The explosion-proof structure controls the release and balance of the internal pressure of the battery core through the popping and rebounding of the elastic piece, after the battery core expands and generates gas, the pressure of the battery core is transmitted to the explosion-proof hole of the explosion-proof plate, and the elastic piece above the explosion-proof hole bounces upwards to exhaust the gas. After the pressure balance of the inside and outside of the battery, the elastic piece rebounds and closes to cover the explosion-proof hole, so that the situation that the external air enters the inside of the battery to cause the power supply failure of the battery is prevented, and the battery can be continuously used.
As an improvement of the explosion-proof lithium ion battery, the explosion-proof structure further comprises a connecting piece, one end of the connecting piece is fixedly connected with the elastic piece, and the other end of the connecting piece is fixed on the cover body. The connecting piece is mainly used for fixing the relative position of the elastic piece, so that the elastic piece can be popped out and rebounded in the vertical direction of the explosion-proof hole.
As an improvement of explosion-proof lithium ion battery, the explosion-proof hole sets up to one, the explosion-proof hole is seted up explosion-proof plate's centre of a circle department.
As an improvement of explosion-proof lithium ion battery, the explosion-proof hole sets up to a plurality of, a plurality of explosion-proof hole is the annular array and arranges. When the battery core generates gas, the gas can be diffused from the plurality of explosion-proof holes, and the exhaust efficiency of the battery is improved. However, the number of the explosion-proof holes is not too large, and the too many explosion-proof holes may increase the risk of external air entering the battery.
As an improvement of the explosion-proof lithium ion battery, the shape of the elastic member is a sphere, a cylinder or a cuboid. The elastic piece is matched with the shape of the explosion-proof hole, and the elastic piece can be integrally covered on the explosion-proof hole to prevent external air from entering the battery. However, if the area of the elastic member is too large compared with the area of the explosion-proof hole, the gas cannot burst through the elastic member, and the potential safety hazard is still generated.
As an improvement of the explosion-proof lithium ion battery of the present invention, the surface of the lid has a plurality of air vents. The vent hole on the surface of the cover body is used for discharging gas generated by the battery core to the outside of the battery, and explosion caused by overlarge air pressure in the battery is prevented.
As an improvement of the explosion-proof lithium ion battery, the inner surface of the cover body is bonded with a polymer layer, and the polymer layer has a plurality of micropores. Preferably, the high polymer layer is a polypropylene layer, the polypropylene layer has high impact resistance and high mechanical property toughness, when the internal air pressure of the battery is too high, the battery cover can be prevented from being impacted by huge air pressure, and the polypropylene layer mainly plays a role in buffering. The polypropylene layer is provided with a plurality of micropores, when the gas generated by the battery core is excessive, the plurality of micropores of the polypropylene layer can enable the gas passing through the explosion-proof structure to be slowly discharged to the outside of the battery, and the gas is prevented from being directly sprayed out to cause harm to people.
As an improvement of the explosion-proof lithium ion battery, the shell is arranged into a groove shape. The shell is mainly used for accommodating the battery cell and plays a role in supporting, fixing and protecting the battery cell.
As an improvement of the explosion-proof lithium ion battery, the cover body is connected with the housing lock.
As an improvement of the explosion-proof lithium ion battery, the cover body and the joint between the shells are also provided with a bonding layer. The tie layer can bond lid and casing, sealed battery prevents that outside air from getting into in the battery, causes the battery power supply to become invalid.
The utility model has the advantages of but not limited to: the utility model discloses an explosion-proof lithium ion battery has explosion-proof structural design, and when high temperature inflation and gas production appeared in the battery, the pressure was too big in the battery, when reaching a definite value, explosion-proof structure began work pressure release, and the gas of electricity core the inside transmits for the elastic component through explosion-proof hole, and the elastic component upwards pops out, and gas outwards leaks, through lid exhaust gas. After the internal and external pressure of the battery reaches balance, the elastic piece in the explosion-proof structure rebounds and closes, so that the electrolyte does not flow outwards, and the external air cannot enter the battery. To sum up, the utility model discloses a can guarantee that the battery takes place to produce the safety problem that the gas inflation produced, the battery also can not lose efficacy at once consequently simultaneously.
Drawings
Fig. 1 is one of the structural schematic diagrams of the explosion-proof lithium ion battery of the present invention.
Fig. 2 is one of the structural schematic diagrams of the explosion-proof lithium ion battery explosion-proof plate of the present invention.
Fig. 3 is a second schematic structural diagram of the explosion-proof lithium ion battery of the present invention.
Fig. 4 is a second schematic structural diagram of the explosion-proof lithium ion battery explosion-proof plate of the present invention.
In the figure: 1-battery core, 2-shell, 3-cover body, 41-explosion-proof plate, 42-explosion-proof hole, 43-elastic piece and 44-connecting piece.
Detailed Description
As used in the specification and in the claims, certain terms are used to refer to particular components. As one skilled in the art will appreciate, manufacturers may refer to a component by different names. This specification and claims do not intend to distinguish between components that differ in name but not function. In the following description and in the claims, the terms "include" and "comprise" are used in an open-ended fashion, and thus should be interpreted to mean "include, but not limited to. "substantially" means within an acceptable error range, within which a person skilled in the art can solve the technical problem to substantially achieve the technical result.
In the description of the present invention, it is to be understood that the terms "upper", "lower", "front", "rear", "left", "right", horizontal "and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention.
In the present invention, unless otherwise expressly specified or limited, the terms "mounted," "connected," and "fixed" are to be construed broadly and may, for example, be fixedly connected, detachably connected, or integrally connected; 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 according to specific situations by those skilled in the art.
The present invention will be described in further detail with reference to the accompanying drawings, which are not intended to limit the present invention.
Example 1
As shown in fig. 1-2, the embodiment provides an explosion-proof lithium ion battery, including electric core 1, casing 2 for holding electric core 1 and lid 3 for covering casing 2, still be provided with explosion-proof structure in lid 3, explosion-proof structure is including setting up explosion-proof plate 41 at electric core 1 top, and explosion-proof hole 42 has been seted up on explosion-proof plate 41's surface, and the top of explosion-proof hole 42 still is provided with elastic component 43, and elastic component 43 can cover explosion-proof hole 42 completely. The explosion-proof structure controls the release and balance of the internal pressure of the battery cell 1 through the ejection and rebound of the elastic piece 43, after the internal expansion and gas generation of the battery cell 1 occur, the pressure of the battery cell 1 is transmitted to the explosion-proof hole 42 of the explosion-proof plate 41, and the elastic piece 43 above the explosion-proof hole 42 is upwards ejected for exhausting. After the pressure inside and outside the battery is balanced, the elastic piece 43 rebounds and closes to cover the explosion-proof hole 42, so that the power supply failure of the battery caused by the fact that outside air enters the battery is prevented, and the battery can be continuously used.
Further, the explosion-proof structure further comprises a connecting piece 44, one end of the connecting piece 44 is fixedly connected with the elastic piece 43, and the other end of the connecting piece 44 is fixed on the cover body 3. The connecting member 44 is mainly used to fix the relative position of the elastic member 43 so that the elastic member 43 can be ejected and rebounded in the vertical direction of the explosion-proof hole 42.
Further, the explosion-proof hole 42 is provided as one, and the explosion-proof hole 42 is opened at the center of the explosion-proof plate 41.
Further, the elastic member 43 is shaped as a sphere. The elastic member 43 is matched with the explosion-proof hole 42 in shape, and the elastic member 43 can be integrally covered on the explosion-proof hole 42 to prevent external air from entering the battery. However, if the area of the elastic member 43 is too large compared to the area of the explosion-proof hole 42, the gas cannot burst through the elastic member 43, which still causes a safety hazard.
Further, the surface of the lid body 3 has a plurality of vent holes. The vent hole on the surface of the cover body 3 is used for discharging gas generated by the battery core 1 to the outside of the battery, so that explosion caused by overlarge air pressure in the battery is prevented.
Further, a polymer layer is adhered to the inner surface of the lid 3, and the polymer layer has a plurality of micropores. Preferably, the polymer layer is a polypropylene layer, the polypropylene layer has high impact resistance and high mechanical property, when the internal air pressure of the battery is too high, the battery cover body 3 can be prevented from being impacted by huge air pressure, and the polypropylene layer mainly plays a role in buffering. The polypropylene layer is provided with a plurality of micropores, when the gas generated by the battery core 1 is excessive, the plurality of micropores of the polypropylene layer can enable the gas passing through the explosion-proof structure to be slowly discharged to the outside of the battery, and the gas is prevented from being directly sprayed out to cause harm to people.
Further, the housing 2 is provided in a groove type. The casing 2 is mainly used for accommodating the battery cell 1 and plays a role in supporting, fixing and protecting the battery cell 1.
Further, the cover 3 is connected to the housing 2 by snap-fitting.
Further, the joint between the cover 3 and the housing 2 is also provided with an adhesive layer. The adhesive layer can bond the cover 3 and the case 2, and seal the battery, preventing external air from entering the battery, resulting in power failure of the battery.
Example 2
As shown in fig. 3 to 4, the present embodiment provides an explosion-proof lithium ion battery, which is different from embodiment 1 in that a plurality of explosion-proof holes 42 are provided, and the explosion-proof holes 42 are arranged in an annular array. When the battery core 1 generates gas, the gas can be emitted from the plurality of explosion-proof holes 42, so that the exhaust efficiency of the battery is improved. However, the number of the explosion-proof holes 42 is not excessive, and the excessive number of the explosion-proof holes 42 increases the risk of external air entering the battery.
Further, the elastic member 43 is shaped as a cylinder. The elastic member 43 is matched with the explosion-proof hole 42 in shape, and the elastic member 43 can be integrally covered on the explosion-proof hole 42 to prevent external air from entering the battery. However, if the area of the elastic member 43 is too large compared to the area of the explosion-proof hole 42, the gas cannot burst through the elastic member 43, which still causes a safety hazard.
The rest is the same as embodiment 1, and the description is omitted here.
The utility model discloses an explosion-proof lithium ion battery has explosion-proof structural design, and when high temperature inflation and gas production appeared in the battery, the pressure was too big in the battery, when reaching a definite value, explosion-proof structure began work pressure release, and the gas of electricity core the inside transmits for the elastic component through explosion-proof hole, and the elastic component upwards pops out, and gas outwards leaks, through lid exhaust gas. After the internal and external pressure of the battery reaches balance, the elastic piece in the explosion-proof structure rebounds and closes, so that the electrolyte does not flow outwards, and the external air cannot enter the battery. To sum up, the utility model discloses a can guarantee that the battery takes place to produce the safety problem that the gas inflation produced, the battery also can not lose efficacy at once consequently simultaneously.
While the foregoing description shows and describes several preferred embodiments of the invention, it is to be understood, as noted above, that the invention is not limited to the forms disclosed herein, but is not intended to be exhaustive of other embodiments, and is capable of use in various other combinations, modifications, and environments and is capable of changes within the scope of the inventive concept as expressed above, or as otherwise known in the relevant art. But that modifications and variations may be effected by those skilled in the art without departing from the spirit and scope of the invention, which is to be limited only by the claims appended hereto.
Claims (10)
1. The utility model provides an explosion-proof lithium ion battery, its characterized in that includes electric core, is used for holding the casing of electric core with be used for covering the lid of casing, still be provided with explosion-proof structure in the lid, explosion-proof structure is including setting up the explosion-proof board at electric core top, explosion-proof hole has been seted up on the surface of explosion-proof board, the top in explosion-proof hole still is provided with the elastic component, the elastic component can with explosion-proof hole covers completely.
2. The explosion-proof lithium ion battery of claim 1, wherein the explosion-proof structure further comprises a connecting piece, one end of the connecting piece is fixedly connected with the elastic piece, and the other end of the connecting piece is fixed on the cover body.
3. The explosion-proof lithium ion battery of claim 1, wherein the explosion-proof hole is provided in one, and the explosion-proof hole is arranged at the center of the explosion-proof plate.
4. The explosion-proof lithium ion battery of claim 1, wherein the explosion-proof holes are provided in a plurality, and the plurality of explosion-proof holes are arranged in an annular array.
5. The explosion-proof lithium ion battery of claim 1, wherein the shape of the elastic member is a sphere, a cylinder or a cuboid.
6. The explosion-proof lithium ion battery of claim 1 wherein the surface of the cover has a plurality of vent holes.
7. The explosion-proof lithium ion battery of claim 1 wherein a polymer layer is bonded to the inner surface of the cover, the polymer layer having a plurality of micropores.
8. The explosion-proof lithium ion battery of claim 1 wherein the casing is configured as a fluted type.
9. The explosion-proof lithium ion battery of claim 1 wherein the cover is snap-fit to the housing.
10. The explosion-proof lithium ion battery of claim 9 wherein the junction between the cover and the case is further provided with an adhesive layer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921964366.5U CN210778859U (en) | 2019-11-14 | 2019-11-14 | Explosion-proof lithium ion battery |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921964366.5U CN210778859U (en) | 2019-11-14 | 2019-11-14 | Explosion-proof lithium ion battery |
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| CN210778859U true CN210778859U (en) | 2020-06-16 |
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| CN201921964366.5U Active CN210778859U (en) | 2019-11-14 | 2019-11-14 | Explosion-proof lithium ion battery |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113794019A (en) * | 2021-08-17 | 2021-12-14 | 阳萍 | Explosion-proof type lithium ion battery with electrolyte discharge capacity |
| CN114824602A (en) * | 2022-03-31 | 2022-07-29 | 广东国光电子有限公司 | Combined battery cell shell and manufacturing method thereof |
| CN114944536A (en) * | 2022-06-16 | 2022-08-26 | 孚能科技(赣州)股份有限公司 | Decompression valve and battery |
-
2019
- 2019-11-14 CN CN201921964366.5U patent/CN210778859U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113794019A (en) * | 2021-08-17 | 2021-12-14 | 阳萍 | Explosion-proof type lithium ion battery with electrolyte discharge capacity |
| CN114824602A (en) * | 2022-03-31 | 2022-07-29 | 广东国光电子有限公司 | Combined battery cell shell and manufacturing method thereof |
| CN114944536A (en) * | 2022-06-16 | 2022-08-26 | 孚能科技(赣州)股份有限公司 | Decompression valve and battery |
| CN114944536B (en) * | 2022-06-16 | 2023-06-20 | 孚能科技(赣州)股份有限公司 | Pressure release valve and battery |
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