CN209747579U - Lithium battery shell with explosion-proof function - Google Patents
Lithium battery shell with explosion-proof function Download PDFInfo
- Publication number
- CN209747579U CN209747579U CN201822077043.6U CN201822077043U CN209747579U CN 209747579 U CN209747579 U CN 209747579U CN 201822077043 U CN201822077043 U CN 201822077043U CN 209747579 U CN209747579 U CN 209747579U
- Authority
- CN
- China
- Prior art keywords
- explosion
- cover
- shell
- proof
- upper cover
- 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.)
- Expired - Fee Related
Links
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 title claims abstract description 21
- 229910052744 lithium Inorganic materials 0.000 title claims abstract description 21
- 230000002093 peripheral effect Effects 0.000 claims abstract description 8
- 230000008018 melting Effects 0.000 claims description 3
- 238000002844 melting Methods 0.000 claims description 3
- 238000007789 sealing Methods 0.000 claims description 3
- 238000004519 manufacturing process Methods 0.000 abstract description 2
- 238000009434 installation Methods 0.000 description 2
- 239000013585 weight reducing agent Substances 0.000 description 2
- 230000002159 abnormal effect Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000004880 explosion Methods 0.000 description 1
- 239000000758 substrate Substances 0.000 description 1
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 relates to a lithium battery shell with explosion-proof function, which comprises an outer shell, an inner cover and an outer cover, the inner shell is arranged in the outer shell, a spring is respectively arranged between the peripheral outer wall of the inner shell and the peripheral inner wall of the outer shell, the inner cover consists of an upper cover and a lower cover, the lower cover is arranged on the inner shell, the top of the inner shell is provided with a frame body connecting seat, the upper cover is arranged at the upper end of the frame body connecting seat, the frame body connecting seat is sealed by the upper cover, the upper cover is provided with two mounting seats, the two mounting seats are rotatably connected with the left end and the right end of the cross shaft, the front end and the rear end of the cross shaft are movably connected to the front inner wall and the rear inner wall of the outer shell through bearings, a drainage channel is formed in the upper cover, and a pressure protection valve is installed at an outlet of the drainage channel; the design has the advantages of simple structure, easy manufacture, practicality and high efficiency.
Description
Technical Field
The utility model relates to a lithium cell technical field, especially a lithium cell casing with explosion-proof function.
Background
At present, with the increasing miniaturization, weight reduction and portability of electronic products, such as video cameras, notebook computers, mobile phones, etc., the driving power sources of these electronic products are also developing toward high capacity, high safety and weight reduction, and lithium batteries are widely used in electronic products due to their excellent characteristics such as high capacity. The lithium cell includes casing, apron and electric core etc. and wherein the inside of casing is arranged in to electric core, and the upper end of casing has the upper end opening, and the opening at the upper end of casing is then sealed to the apron, and the rethread forms the utmost point post on the apron, then can realize the power supply with lithium cell and outside electronic component electric connection. When the lithium battery is used, abnormal gas is generated along with the chemical reaction in the battery due to the factors of charger failure, excessive charging and the like, so that the internal pressure of the battery is overlarge, and the explosion accident of the battery is caused. However, the existing battery anti-overshoot safety cover plate has the defects of poor reliability, complex structure, high processing requirement and the like in a pressure-resistant range.
Disclosure of Invention
The utility model protects the self structure of the lithium battery through the multistage explosion-proof device arranged on the inner cover, prevents unnecessary damage caused by overhigh temperature and pressure, and plays a role in increasing the practical performance of the lithium battery; provided is a lithium battery case having an explosion-proof function.
In order to solve the technical problem, the structure of the utility model comprises an outer shell, an inner cover and an outer cover, wherein the inner shell is arranged in the outer shell, a spring is respectively arranged between the peripheral outer wall of the inner shell and the peripheral inner wall of the outer shell, the inner cover consists of an upper cover and a lower cover, the lower cover is arranged on the inner shell, a frame body connecting seat is arranged at the top of the inner shell, the upper cover is arranged at the upper end of the frame body connecting seat, the frame body connecting seat is sealed by the upper cover, two installation seats are arranged on the upper cover, the two installation seats are rotationally connected with the left end and the right end of a cross shaft, the front end and the rear end of the cross shaft are movably connected on the front inner wall and the rear inner wall of the outer shell through bearings, a discharge passage is arranged in the upper cover, and a pressure protection valve, the inner cover is also provided with a multi-stage explosion-proof device.
Further: the inner cover is formed by connecting a base plate and a top plate, the multistage explosion-proof device is arranged in the middle of the base plate and the top plate, and comprises an explosion-proof box, an upper explosion-proof film, a lower explosion-proof film and a puncture device, wherein the upper explosion-proof film and the lower explosion-proof film are arranged in the explosion-proof box; the puncturing device comprises a pair of deformation pieces connected through a hot melting part, each deformation piece comprises a fixing part and a tilting part, the fixing parts are fixed between the base plate and the top plate, and the upper surface and the lower surface of each tilting part are respectively provided with a group of sharp thorns.
And further: the joint of the fixing part and the tilting part is provided with a lower groove.
And further: the inner cup on be provided with negative pole post and anodal utmost point post, negative pole post and anodal utmost point post pass upper cover and enclosing cover in proper order, the upper cover on seted up with negative pole post and anodal utmost point post assorted connecting hole, the connecting hole in be provided with and be used for sealed sealing washer, the enclosing cover on seted up the through-hole for the position of negative pole post and anodal utmost point post, the aperture of through-hole be greater than the size of negative pole post and anodal utmost point post.
And further: the pressure protection valve comprises a valve barrel, a valve seat, a second spring and a valve core, wherein one end of the valve barrel is communicated with the drainage channel, the valve seat is installed at the other end of the valve barrel, the valve core is movably connected in the valve barrel, the valve core is connected with the valve seat through the second spring, and the side wall of the valve barrel is provided with a drainage hole.
After the structure is adopted, the multi-stage explosion-proof device arranged on the inner cover of the lithium battery can protect the self structure of the lithium battery, prevent unnecessary damage caused by overhigh temperature and pressure and play a role in increasing the practical performance of the lithium battery; and the design also has the advantages of simple structure, easy manufacture, practicality and high efficiency.
Drawings
The present invention will be described in further detail with reference to the accompanying drawings and specific embodiments.
Fig. 1 is a schematic structural diagram of the present invention.
Fig. 2 is an enlarged view of a in fig. 1.
Fig. 3 is a schematic structural view of the pressure protection valve.
Detailed Description
As shown in fig. 1, a lithium battery shell with an explosion-proof function comprises an outer shell 1, an inner shell 2, an inner cover and an outer cover 10, wherein the inner shell 2 is arranged in the outer shell 1, a spring 3 is respectively arranged between the peripheral outer wall of the inner shell 2 and the peripheral inner wall of the outer shell 1, the inner cover is composed of an upper cover 5 and a lower cover, the lower cover is arranged on the inner shell 2, a frame connecting seat 4 is arranged at the top of the inner shell 2, the upper cover 5 is arranged at the upper end of the frame connecting seat 4, the frame connecting seat 4 is sealed by the upper cover 5, two mounting seats 6 are arranged on the upper cover 5, the two mounting seats 6 are rotatably connected with the left end and the right end of a cross shaft 11, the front end and the rear end of the cross shaft 11 are movably connected on the front inner wall and the rear inner wall of the outer shell 1 by bearings, a discharge passage is arranged in the, the outlet of the discharge channel is provided with a pressure protection valve, and the inner cover is also provided with a multi-stage explosion-proof device.
The inner cover shown in fig. 1 and 2 is formed by connecting a base plate 14 and a top plate 13, the multistage explosion-proof device is arranged in the middle of the base plate 14 and the top plate 13, and comprises an explosion-proof box 15, an upper explosion-proof film 16, a lower explosion-proof film 16 and a puncturing device, wherein the upper explosion-proof film and the lower explosion-proof film are arranged in the explosion-proof box; the puncture device comprises a pair of deformation sheets connected through a hot melting part 19, each deformation sheet comprises a fixing part 17 and a tilting part 21, the fixing part 17 is fixed between a substrate and a top plate, the upper surface and the lower surface of the tilting part 21 are respectively provided with a group of sharp spines 18, and the joint of the fixing part 17 and the tilting part 21 is provided with a lower groove 20.
Be provided with negative pole post 9 and positive pole post 8 on the inner cup shown in fig. 1, negative pole post 9 and positive pole post 8 pass upper cover 5 and enclosing cover 10 in proper order, upper cover 5 on seted up with negative pole post 9 and positive pole post 8 assorted connecting hole, the connecting hole in be provided with and be used for sealed sealing washer, enclosing cover 10 on seted up through-hole 7 for the position of negative pole post 9 and positive pole post 8, the aperture of through-hole 7 be greater than the size of negative pole post 9 and positive pole post 8.
The pressure protection valve shown in fig. 3 comprises a valve cylinder 12-1, a valve seat 12-5, a second spring 12-4 and a valve core 12-2, wherein one end of the valve cylinder 12-1 is communicated with a drainage channel, the valve seat 12-5 is installed at the other end of the valve cylinder 12-1, the valve core 12-2 is movably connected in the valve cylinder 12-1, the valve core 12-2 is connected with the valve seat 12-5 through the second spring, and a drainage hole 12-3 is formed in the side wall of the valve cylinder 12-1.
Claims (5)
1. The utility model provides a lithium battery shell with explosion-proof function which characterized in that: comprises an outer shell, an inner cover and an outer cover, wherein the inner shell is arranged in the outer shell, springs are respectively arranged between the peripheral outer wall of the inner shell and the peripheral inner wall of the outer shell, the inner cover consists of an upper cover and a lower cover, the lower cover is arranged on the inner shell, the top of the inner shell is provided with a frame body connecting seat, the upper cover is arranged at the upper end of the frame body connecting seat, the frame body connecting seat is sealed by the upper cover, the upper cover is provided with two mounting seats, the two mounting seats are rotatably connected with the left end and the right end of the cross shaft, the front end and the rear end of the cross shaft are movably connected on the front inner wall and the rear inner wall of the outer shell through bearings, the upper cover is internally provided with a discharge passage, the outlet of the discharge channel is provided with a pressure protection valve, and the inner cover is also provided with a multi-stage explosion-proof device.
2. The lithium battery case with an explosion-proof function according to claim 1, characterized in that: the inner cover is formed by connecting a base plate and a top plate, the multistage explosion-proof device is arranged in the middle of the base plate and the top plate, and comprises an explosion-proof box, an upper explosion-proof film, a lower explosion-proof film and a puncture device, wherein the upper explosion-proof film and the lower explosion-proof film are arranged in the explosion-proof box; the puncturing device comprises a pair of deformation pieces connected through a hot melting part, each deformation piece comprises a fixing part and a tilting part, the fixing parts are fixed between the base plate and the top plate, and the upper surface and the lower surface of each tilting part are respectively provided with a group of sharp thorns.
3. The lithium battery case with an explosion-proof function according to claim 2, characterized in that: the joint of the fixing part and the tilting part is provided with a lower groove.
4. The lithium battery case with an explosion-proof function according to claim 1, characterized in that: the inner cup on be provided with negative pole post and anodal utmost point post, negative pole post and anodal utmost point post pass upper cover and enclosing cover in proper order, the upper cover on seted up with negative pole post and anodal utmost point post assorted connecting hole, the connecting hole in be provided with and be used for sealed sealing washer, the enclosing cover on seted up the through-hole for the position of negative pole post and anodal utmost point post, the aperture of through-hole be greater than the size of negative pole post and anodal utmost point post.
5. The lithium battery case with an explosion-proof function according to claim 1, characterized in that: the pressure protection valve comprises a valve barrel, a valve seat, a second spring and a valve core, wherein one end of the valve barrel is communicated with the drainage channel, the valve seat is installed at the other end of the valve barrel, the valve core is movably connected in the valve barrel, the valve core is connected with the valve seat through the second spring, and the side wall of the valve barrel is provided with a drainage hole.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822077043.6U CN209747579U (en) | 2018-12-11 | 2018-12-11 | Lithium battery shell with explosion-proof function |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822077043.6U CN209747579U (en) | 2018-12-11 | 2018-12-11 | Lithium battery shell with explosion-proof function |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209747579U true CN209747579U (en) | 2019-12-06 |
Family
ID=68703412
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201822077043.6U Expired - Fee Related CN209747579U (en) | 2018-12-11 | 2018-12-11 | Lithium battery shell with explosion-proof function |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209747579U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111173975A (en) * | 2020-01-06 | 2020-05-19 | 王晓华 | Explosion-proof valve based on lithium battery |
-
2018
- 2018-12-11 CN CN201822077043.6U patent/CN209747579U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111173975A (en) * | 2020-01-06 | 2020-05-19 | 王晓华 | Explosion-proof valve based on lithium battery |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20191206 Termination date: 20201211 |