CN104868067A - Lithium battery cap - Google Patents
Lithium battery cap Download PDFInfo
- Publication number
- CN104868067A CN104868067A CN201510288635.0A CN201510288635A CN104868067A CN 104868067 A CN104868067 A CN 104868067A CN 201510288635 A CN201510288635 A CN 201510288635A CN 104868067 A CN104868067 A CN 104868067A
- Authority
- CN
- China
- Prior art keywords
- lithium battery
- cap
- brace
- sheet
- battery cap
- 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
Links
- 229910052744 lithium Inorganic materials 0.000 title claims abstract description 26
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 title claims abstract description 24
- 229920003023 plastic Polymers 0.000 claims description 3
- 239000004033 plastic Substances 0.000 claims description 3
- 238000003466 welding Methods 0.000 claims description 3
- 230000009172 bursting Effects 0.000 abstract description 3
- 238000004880 explosion Methods 0.000 abstract 2
- 239000003792 electrolyte Substances 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 150000002641 lithium Chemical class 0.000 description 2
- 238000007599 discharging Methods 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
Classifications
-
- 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
- H01M50/147—Lids or covers
- H01M50/148—Lids or covers characterised by their shape
-
- 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
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Sealing Battery Cases Or Jackets (AREA)
Abstract
The invention discloses a lithium battery cap. The lithium battery cap comprises a cap shell, a connecting sheet and a ventilating sheet, wherein openings are formed in two ends of the cap shell; the connecting sheet and the ventilating sheet are stacked together and are arranged in the cap shell; ventilating holes are formed in the ventilating sheet; an annular groove is formed in the connecting sheet; an anti-explosion valve sheet is formed in the annular groove. If a battery is in special circumstances and more gas is generated in a battery shell, the anti-explosion valve sheet is opened under the pushing action of gas pressure, the gas is exhausted through the ventilating holes in the ventilating sheet, the battery is prevented from bursting, and dangerous situations are avoided.
Description
Technical field
The present invention relates to technical field of lithium batteries, especially relate to a kind of lithium battery cap.
Background technology
Be provided with battery roll core and electrolyte in lithium battery casing, lithium battery casing openend is sealed by battery cap, and battery roll core and electrolyte are in the cavity of sealing.
Lithium battery as there is short circuit or internal moisture is too much and charging and discharging currents is excessive time, can gas be produced in battery container; In the case of a high temperature, produce gas too much, lithium battery can burst, and affects the safe handling of lithium battery.
Summary of the invention
Not enough for prior art, technical problem to be solved by this invention is to provide a kind of lithium battery cap, can discharge producing in battery container more gas.
In order to solve the problems of the technologies described above, the technical solution adopted in the present invention is:
This lithium battery cap, comprises cap shell, also comprises brace and exhaust sheet, described cap shell two ends are opening, and described brace and exhaust sheet are stacked together and are located in cap shell, and described exhaust sheet is provided with exhaust outlet, described brace is provided with annular groove, forms explosion-proof valve block in annular groove.
Further, the pad of annular is provided with between described exhaust sheet and brace.
Corresponding explosion-proof valve block position outwardly convex on described exhaust sheet.
Also comprise and be located at egative film in cap shell, described brace is connected with egative film, and egative film is provided with the gas port for being vented.
Described cap shell is the cylindrical structure of plastics.
Inner edge and the annular groove of described pad align.
Described cap shell one end is provided with the flange for fixing backsheet edge.
Arch upward towards egative film in the middle part of described brace.
In the middle part of described brace with in the middle part of egative film between be connected by spot welding.
The present invention compared with prior art, has the following advantages: special circumstances appear in battery, and when in battery container, generation gas is more, explosion-proof valve block can back down by air pressure, is discharged by gas, prevent battery from bursting, avoid occurring dangerous situation by exhaust outlet on exhaust sheet.
Accompanying drawing explanation
Below the content expressed by each width accompanying drawing of this specification and the mark in figure are briefly described:
Fig. 1 is lithium battery cap cutaway view of the present invention.
Fig. 2 is lithium battery cap vertical view of the present invention.
Fig. 3 is lithium battery cap upward view of the present invention.
In figure: 1. cap shell, 2. exhaust sheet, 201. exhaust outlets, 3. pad, 4. brace, 401. explosion-proof valve blocks, 402. annular grooves, 5. egative film, 501. gas ports.
Embodiment
Contrast accompanying drawing below, by the description to embodiment, the specific embodiment of the present invention is described in further detail.
As shown in Figure 1 to Figure 3, this lithium battery cap, comprise cap shell 1, exhaust sheet 2, pad 3, brace 4, egative film 5, wherein, cap shell 1 is the cylindrical structure of plastics, and exhaust sheet 2, pad 3, brace 4, egative film 5 are stacked together and are fixed in cap shell 1, cap shell 1 is arranged on battery container open end, exhaust sheet is by battery container openend outer setting, and egative film is arranged by battery container inside, and egative film is connected with the positive plate of battery roll core in battery container.
Exhaust sheet 2 is provided with exhaust outlet 201, and brace 4 is provided with annular groove 402, and form explosion-proof valve block 401 in annular groove 402, egative film 5 is provided with the gas port 501 for being vented.When in battery container, generation gas is more, explosion-proof valve block can back down by air pressure, and explosion-proof valve block is separated from brace by annular groove, forms exhaust passage.
Corresponding explosion-proof valve block position outwardly convex on exhaust sheet 2, prevents explosion-proof valve block after brace disengaging, blocks exhaust outlet 201 on exhaust sheet.Exhaust outlet on exhaust sheet is five, and five exhaust outlets are distributed on exhaust sheet 2.
The pad 3 of annular is arranged between exhaust sheet and brace, and inner edge and the annular groove of pad align, and are convenient to explosion-proof valve block and are backed down from annular groove, depart from brace.
Egative film 5 is arranged on the bottom of cap shell 1, and brace is connected with egative film, and egative film is provided with the gas port for being vented, and gas port is located at the edge of egative film, and cap shell one end is provided with the flange for fixing backsheet edge.
Arch upward towards egative film in the middle part of brace 4, in the middle part of brace with in the middle part of egative film between be connected by spot welding, only have in battery container and produce more gas, air pressure reaches setting threshold values, and the explosion-proof valve block in the middle part of brace just can be backed down, and is exhausted, prevent battery from bursting, avoid occurring dangerous situation.
Above by reference to the accompanying drawings to invention has been exemplary description; obvious specific implementation of the present invention is not subject to the restrictions described above; as long as have employed the improvement of the various unsubstantialities that design of the present invention and technical scheme are carried out; or design of the present invention and technical scheme directly applied to other occasion, all within protection scope of the present invention without to improve.
Claims (9)
1. a lithium battery cap, comprise cap shell, it is characterized in that: also comprise brace and exhaust sheet, described cap shell two ends are opening, described brace and exhaust sheet are stacked together and are located in cap shell, described exhaust sheet is provided with exhaust outlet, and described brace is provided with annular groove, forms explosion-proof valve block in annular groove.
2. lithium battery cap as claimed in claim 1, is characterized in that: the pad being provided with annular between described exhaust sheet and brace.
3. lithium battery cap as claimed in claim 1, is characterized in that: corresponding explosion-proof valve block position outwardly convex on described exhaust sheet.
4. lithium battery cap as claimed in claim 1, it is characterized in that: also comprise and be located at egative film in cap shell, described brace is connected with egative film, and egative film is provided with the gas port for being vented.
5. lithium battery cap as claimed in claim 1, is characterized in that: described cap shell is the cylindrical structure of plastics.
6. lithium battery cap as claimed in claim 2, is characterized in that: inner edge and the annular groove of described pad align.
7. lithium battery cap as claimed in claim 4, is characterized in that: described cap shell one end is provided with the flange for fixing backsheet edge.
8. lithium battery cap as claimed in claim 4, is characterized in that: arch upward towards egative film in the middle part of described brace.
9. lithium battery cap as claimed in claim 8, is characterized in that: in the middle part of described brace with in the middle part of egative film between be connected by spot welding.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510288635.0A CN104868067A (en) | 2015-05-29 | 2015-05-29 | Lithium battery cap |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510288635.0A CN104868067A (en) | 2015-05-29 | 2015-05-29 | Lithium battery cap |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104868067A true CN104868067A (en) | 2015-08-26 |
Family
ID=53913752
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510288635.0A Pending CN104868067A (en) | 2015-05-29 | 2015-05-29 | Lithium battery cap |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104868067A (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH11283600A (en) * | 1998-03-31 | 1999-10-15 | Sanyo Electric Co Ltd | Sealed battery |
| CN1450680A (en) * | 2002-04-10 | 2003-10-22 | 伊万莫利能量（加拿大）有限公司 | Top cap for rechargeable lithium cell |
| CN101626066A (en) * | 2009-08-14 | 2010-01-13 | 深圳市科达利实业有限公司 | Lithium battery cover plate with explosion and breakage preventing protection apparatus and production method thereof |
| CN202395053U (en) * | 2011-12-27 | 2012-08-22 | 浙江天能能源科技有限公司 | Combined cap for cylindrical lithium ion battery |
| KR20130063206A (en) * | 2011-12-06 | 2013-06-14 | 주식회사 엘지화학 | Secondary battery and battery pack including the same |
| CN203192873U (en) * | 2013-03-20 | 2013-09-11 | 张银波 | Lithium battery explosion-proof cap |
-
2015
- 2015-05-29 CN CN201510288635.0A patent/CN104868067A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH11283600A (en) * | 1998-03-31 | 1999-10-15 | Sanyo Electric Co Ltd | Sealed battery |
| CN1450680A (en) * | 2002-04-10 | 2003-10-22 | 伊万莫利能量（加拿大）有限公司 | Top cap for rechargeable lithium cell |
| CN101626066A (en) * | 2009-08-14 | 2010-01-13 | 深圳市科达利实业有限公司 | Lithium battery cover plate with explosion and breakage preventing protection apparatus and production method thereof |
| KR20130063206A (en) * | 2011-12-06 | 2013-06-14 | 주식회사 엘지화학 | Secondary battery and battery pack including the same |
| CN202395053U (en) * | 2011-12-27 | 2012-08-22 | 浙江天能能源科技有限公司 | Combined cap for cylindrical lithium ion battery |
| CN203192873U (en) * | 2013-03-20 | 2013-09-11 | 张银波 | Lithium battery explosion-proof cap |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| EXSB | Decision made by sipo to initiate substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20150826 |
|
| RJ01 | Rejection of invention patent application after publication |