CN205828451U - Cylindrical lithium battery explosion-proof combined block - Google Patents
Cylindrical lithium battery explosion-proof combined block Download PDFInfo
- Publication number
- CN205828451U CN205828451U CN201620625786.0U CN201620625786U CN205828451U CN 205828451 U CN205828451 U CN 205828451U CN 201620625786 U CN201620625786 U CN 201620625786U CN 205828451 U CN205828451 U CN 205828451U
- Authority
- CN
- China
- Prior art keywords
- lithium battery
- burst disk
- cylindrical lithium
- battery explosion
- combined block
- 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.)
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Links
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 title claims abstract description 34
- 229910052744 lithium Inorganic materials 0.000 title claims abstract description 34
- 238000007789 sealing Methods 0.000 claims abstract description 17
- 229920001971 elastomer Polymers 0.000 claims description 11
- 239000000806 elastomer Substances 0.000 claims description 11
- 239000000463 material Substances 0.000 claims description 8
- 238000004880 explosion Methods 0.000 abstract description 7
- 230000002265 prevention Effects 0.000 abstract description 5
- 238000000034 method Methods 0.000 description 10
- 230000000694 effects Effects 0.000 description 3
- HBBGRARXTFLTSG-UHFFFAOYSA-N Lithium ion Chemical compound [Li+] HBBGRARXTFLTSG-UHFFFAOYSA-N 0.000 description 2
- 238000006073 displacement reaction Methods 0.000 description 2
- 230000005611 electricity Effects 0.000 description 2
- 229910001416 lithium ion Inorganic materials 0.000 description 2
- 229910018095 Ni-MH Inorganic materials 0.000 description 1
- 229910018477 Ni—MH Inorganic materials 0.000 description 1
- 229910052793 cadmium Inorganic materials 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000003292 glue Substances 0.000 description 1
- 230000007257 malfunction Effects 0.000 description 1
- 230000001473 noxious effect Effects 0.000 description 1
- 238000005096 rolling process Methods 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000003466 welding Methods 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)
- Sealing Battery Cases Or Jackets (AREA)
Abstract
A kind of burst disk of cylindrical lithium battery explosion-proof combined block, including upper cover plate, annular sealing gaskets, burst disk, lower cover, and O-ring seal, burst disk has recess between upper and lower two ends, the burst disk thickness at the upper and lower two ends of recess is identical, in the middle of using, recess is set, under the explosion prevention function not affecting burst disk, it is possible to work for a long time.
Description
Technical field
This utility model relates to, particularly to cylindrical lithium battery explosion-proof combined block.
Background technology
Lithium ion battery is high with its specific energy, specific power big, have extended cycle life, and without noxious substance, has obtained day
Benefit is widely applied.Especially cylindrical lithium ion battery, its sturdy and durable, good seal, easy connection in series-parallel combination, being permitted of it
Polytypic and aneroid battery, ickel-cadmium cell, Ni-MH battery overall dimensions identical, as easy as rolling off a log replacement uses, and its use is the most extensive.
Therefore it is improved, be allowed to safety and reliability, be the most significant.
General cylindrical lithium battery has explosion-proof combined block, cylindrical lithium battery anti-explosion to include top cover, PTC, prevent
Quick-fried valve, dividing plate and the sealing ring that parts are sealed.Explosion-proof combined block is in order to prevent from lithium battery from overcharging or cross the reason such as putting and drawing
Play lithium battery interior pressure and become big, cause battery explosion.Recess is had, when lithium battery internal gas pressure rises to a fixed number in burst disk
After value, burst disk ruptures from indent, but owing to burst disk and the lower cover being connected with lug connect, band is so being with electricity
Stream, normally working when, owing to recess reason causes the sectional area of burst disk to diminish to such an extent as to by identical electric current
Excessive, burst disk indent ruptures, and causes battery open circuit not work.
Utility model content
The purpose of this utility model is to provide a kind of cylindrical lithium battery explosion-proof combined block, arranges recessed in the middle of employing
Mouthful, under the explosion prevention function not affecting burst disk, it is possible to work for a long time.
Above-mentioned purpose of the present utility model has the technical scheme that a kind of cylindrical lithium battery is explosion-proof
The burst disk of combination cover cap, including upper cover plate, annular sealing gaskets, burst disk, lower cover, and O-ring seal, burst disk
Having recess between two ends up and down, the burst disk thickness at the upper and lower two ends of recess is identical.
By using technique scheme, upper cover plate, annular sealing gaskets, burst disk, lower cover are by using welding material
Material, forms one, and then its periphery is wrapped up by O-ring seal.When lithium battery generation overcharges or crosses and puts when, lithium battery
Interior pressure rises a lot of bubbles of generation, and cylindrical lithium battery explosion-proof combined block is as the interface of the both positive and negative polarity of lithium battery, simultaneously
For explosion prevention function, preventing lithium battery pressure excessive causing from exploding, block mainly realizes what explosion prevention function was realized by burst disk,
Being arranged by burst disk and arrange recess between two ends, the thickness of the burst disk at recess two ends is identical, when pressure reaches certain numerical value
Time burst disk fracture, during normal use, burst disk is so arranged so that being difficult to be blown.
Preferably, O-ring seal includes elastomer block, and elastomer block slant setting and elastomer block have groove.
By using technique scheme, when burst disk can not rupture in time when, O-ring seal is obliquely installed
The groove of elastomer block ruptures under the effect of the pressure, it is achieved lower cover and the separation of burst disk, it is also possible to realize lithium battery
Open circuit.
Preferably, groove is inverted triangle shape, runs through and do not run through upper end bottom elastomer block.
By using technique scheme, groove is that inverted triangle is arranged, and sectional area is gradually increased from top to bottom, then under from
The less the most separable lower cover of pressure in face and burst disk.
Preferably, sealing ring is provided with the first limit baffle ring for limiting burst disk length travel.
By using technique scheme so that burst disk is fixed by fixing baffle ring, limits burst disk at sealing ring
Displacement in interior horizontal direction so that the most enough more preferable performance self-actings of burst disk, improves the safety that sealing ring uses.
Preferably, sealing ring is provided with for limiting the second limit baffle ring that upper cover plate vertically moves.
By using technique scheme, prevent upper cover plate from moving from O-ring seal vertical direction, to O-ring seal
Sealing effectiveness produce impact, arranged by the second limit baffle ring and can effectively prevent vertical upper cover plate from moving.
Preferably, O-ring seal is made up of PP material.
By using technique scheme, PP material surface rigidity and anti-scratch characteristic fine, because lithium battery needs table
The block that the smooth material in face is made has good electric conductivity.
Preferably, lower cover is provided with dry steam vent, and the center of circle of steam vent is positioned on the circular arc that following cover plate central is the center of circle.
By using technique scheme, during in order to ensure burst disk pressure experienced, self-deformation is symmetrical, so
Steam vent is needed to be positioned at the center of circle, position of plate body identical.
Preferably, upper cover plate is provided with passage, and passage number is 3 ~ 5.
By using technique scheme, upper cover plate arranges 3 ~ 5 passages, and passage compares less than 3 exhaust effects
Difference, more than 5 passages, the processing of upper cover plate is relatively difficult.
Accompanying drawing explanation
Fig. 1 is cylindrical lithium battery explosion-proof combined block；
Fig. 2 is the three-dimensional structure diagram of upper cover plate；
Fig. 3 is the enlarged drawing of A in Fig. 1.
Reference: 1, upper cover plate；2, annular sealing gaskets；3, burst disk；4, lower cover；5, O-ring seal；6, recessed
Mouthful；7, elastomer block；8, the first limit baffle ring；9, the second limit baffle ring；10, groove；11, steam vent；12, passage.
Detailed description of the invention
Below in conjunction with accompanying drawing, this utility model is described in further detail.
As it is shown in figure 1, a kind of cylindrical lithium battery explosion-proof combined block, O-ring seal 5 is wrapped in block, and block is from upper
The upper cover plate 1 that sets gradually under and, annular sealing gaskets 2, burst disk 3, lower cover 4, these parts are bonded by glue.
Wherein, burst disk 3 is set to centre and offers recess 6, and the thickness of the burst disk 3 at recess 6 two ends is identical, so arranges
Burst disk 3, lithium battery normally works when, is losing the material of certain sectional area, but by the shunting of electric current, institute
So that after burst disk 3 will not be because of have lost certain sectional area lithium battery normally works when, by identical electricity
Stream, causes burst disk 3 to be blown, causes lithium battery open circuit.The structure the most so arranged is born same pressure and also can be ruptured,
So not affecting the explosion prevention function of burst disk 3.
At sealing ring, the first limit baffle ring 8 is set in the one side contacted with burst disk, is used for preventing burst disk at sealing ring
Displacement in interior horizontal direction；Second limit baffle ring 9 is set in the one side contacted with upper cover plate, is used for limiting upper cover plate vertically side
To movement.
As shown in Figure 1,3, in order to prevent burst disk 3 cisco unity malfunction, by arranging the bullet of inclination in O-ring seal 5
Having the groove 10 of inverted triangle shape on property block 7, and elastomer block 7, described groove 10 will break after bearing certain pressure
Split, lower cover 4 and burst disk 3 are separated, burst disk 3 can not rupture when, also can make lithium battery open circuit, simultaneously
Increase gas discharge so that burst disk 3 crack velocity accelerates so that gas is quickly discharged from the steam vent 11 of upper cover plate 1,
The steam vent 11 of upper cover plate 1 is set to 3 ~ 5, and passage 12 is poor less than 3 exhaust effects, more than 5 passages 12, on
The processing of cover plate 1 is relatively difficult.Gas is mainly discharged from the passage 12 of lower cover 4, and lower cover 4 arranges steam vent 11, aerofluxus
The center of circle in hole 11 is positioned at when so can ensure that burst disk 3 pressure experienced on the circular arc with lower cover 4 center as the center of circle, self
Deformation is symmetrical, so it is identical to need steam vent 11 to be positioned at the position home position of plate body.Then burst disk 3 is acted on, when
The when that air pressure exceeding warning numerical value, burst disk 3 is by the fracture on air pressure top, and then gas is from from the steam vent 11 of upper cover plate 1
Discharge, lithium battery is carried out the process of release of pressure.O-ring seal 5 is made up of PP material, and its surface rigidity and anti-scratch characteristic are very
Good, because lithium battery needs ganoid O-ring seal 5 can to seal with good battery so that block has very well
Electric conductivity.
This specific embodiment is only that it is not to restriction of the present utility model, ability to explanation of the present utility model
The present embodiment can be made after reading this specification by field technique personnel as required does not has the amendment of creative contribution, but
As long as all being protected by Patent Law in right of the present utility model.
Claims (8)
1. a cylindrical lithium battery explosion-proof combined block, including upper cover plate (1), annular sealing gaskets (2), burst disk (3), under
Cover plate (4), and O-ring seal (5), is characterized in that: described burst disk (3) has recess (6) between two ends up and down, described
Burst disk (3) thickness at recess (6) two ends up and down is identical.
Cylindrical lithium battery explosion-proof combined block the most according to claim 1, is characterized in that: O-ring seal (5) includes
Groove (10) is had in elastomer block (7), described elastomer block (7) slant setting and elastomer block (7).
Cylindrical lithium battery explosion-proof combined block the most according to claim 2, is characterized in that: described groove (10) is three
Horn shape, described elastomer block (7) bottom is run through and is not run through upper end.
Cylindrical lithium battery explosion-proof combined block the most according to claim 3, is characterized in that: described sealing ring be provided with for
Limit first limit baffle ring (8) of burst disk (3) length travel.
Cylindrical lithium battery explosion-proof combined block the most according to claim 4, is characterized in that: described sealing ring be provided with for
Limit second limit baffle ring (9) of upper cover plate (1) vertically movement.
Cylindrical lithium battery explosion-proof combined block the most according to claim 5, is characterized in that: described sealing ring is by PP material
Make.
Cylindrical lithium battery explosion-proof combined block the most according to claim 6, is characterized in that: described lower cover (4) is provided with
Dry steam vent (11), the center of circle of described steam vent (11) is positioned at on the circular arc as the center of circle of lower cover (4) center.
Cylindrical lithium battery explosion-proof combined block the most according to claim 7, is characterized in that: described upper cover plate (1) is provided with
Passage (12), described passage (12) number is 3 ~ 5.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620625786.0U CN205828451U (en) | 2016-06-23 | 2016-06-23 | Cylindrical lithium battery explosion-proof combined block |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620625786.0U CN205828451U (en) | 2016-06-23 | 2016-06-23 | Cylindrical lithium battery explosion-proof combined block |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205828451U true CN205828451U (en) | 2016-12-21 |
Family
ID=58145936
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620625786.0U Active CN205828451U (en) | 2016-06-23 | 2016-06-23 | Cylindrical lithium battery explosion-proof combined block |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205828451U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109103360A (en) * | 2018-07-20 | 2018-12-28 | 苏州橙柳电子精密有限公司 | A kind of lithium battery cap |
-
2016
- 2016-06-23 CN CN201620625786.0U patent/CN205828451U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109103360A (en) * | 2018-07-20 | 2018-12-28 | 苏州橙柳电子精密有限公司 | A kind of lithium battery cap |
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| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |