CN109256513A - A kind of half-headed extremely thin type cylindrical lithium battery nut cap - Google Patents
A kind of half-headed extremely thin type cylindrical lithium battery nut cap Download PDFInfo
- Publication number
- CN109256513A CN109256513A CN201811208474.XA CN201811208474A CN109256513A CN 109256513 A CN109256513 A CN 109256513A CN 201811208474 A CN201811208474 A CN 201811208474A CN 109256513 A CN109256513 A CN 109256513A
- Authority
- CN
- China
- Prior art keywords
- orifice plate
- lithium battery
- headed
- rupture disk
- extremely thin
- 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
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 title claims abstract description 27
- 229910052744 lithium Inorganic materials 0.000 title claims abstract description 27
- 238000004880 explosion Methods 0.000 claims abstract description 31
- 238000007789 sealing Methods 0.000 claims abstract description 9
- 239000000463 material Substances 0.000 claims description 4
- 229910052782 aluminium Inorganic materials 0.000 claims description 3
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 3
- 238000010276 construction Methods 0.000 claims description 3
- 238000003466 welding Methods 0.000 abstract description 10
- 238000000034 method Methods 0.000 abstract description 8
- 238000005516 engineering process Methods 0.000 abstract description 4
- 238000004519 manufacturing process Methods 0.000 abstract description 2
- 238000012536 packaging technology Methods 0.000 abstract description 2
- 206010037660 Pyrexia Diseases 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- VRAIHTAYLFXSJJ-UHFFFAOYSA-N alumane Chemical compound [AlH3].[AlH3] VRAIHTAYLFXSJJ-UHFFFAOYSA-N 0.000 description 1
- KCZFLPPCFOHPNI-UHFFFAOYSA-N alumane;iron Chemical compound [AlH3].[Fe] KCZFLPPCFOHPNI-UHFFFAOYSA-N 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 239000010959 steel Substances 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 of a single cell or a single battery
- H01M50/147—Lids or covers
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/05—Accumulators with non-aqueous electrolyte
- H01M10/052—Li-accumulators
-
- 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 of a single cell or a single battery
- H01M50/147—Lids or covers
- H01M50/148—Lids or covers characterised by their shape
- H01M50/152—Lids or covers characterised by their shape for cells having curved cross-section, e.g. round or elliptic
-
- 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
- H01M50/30—Arrangements for facilitating escape of gases
- H01M50/342—Non-re-sealable arrangements
- H01M50/3425—Non-re-sealable arrangements in the form of rupturable membranes or weakened parts, e.g. pierced with the aid of a sharp member
-
- 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
Abstract
The invention discloses a kind of half-headed extremely thin type cylindrical lithium battery nut caps, it successively include orifice plate, insulated ring, explosion rupture disk and sealing ring, the centre of the insulated ring is equipped with a through-hole, the explosion rupture disk is equipped with a boss, and the boss is welded by set through-hole on the insulated ring and the orifice plate.Changed by structure, it is thin by 45% so that original nut cap integral thickness drops to 1.90mm from 3.45mm, it is the useful space of the mostly reserved 1.55mm of battery core, is that the battery of equal unit volume increases volume space.Compared with prior art, in terms of production technology, number of parts is reduced, originally there is design of cover, number of components is 5, is now 4, without top cover, this reduces packaging technology also correspondingly, there is wrapping process in prior art processes, also there is welding procedure twice, is being welded to each other for top cover, explosion rupture disk and orifice plate respectively, the present patent application only needs once to weld, i.e. the welding of explosion rupture disk and orifice plate.
Description
Technical field
The present invention relates to dynamic lithium battery field more particularly to a kind of half-headed extremely thin type cylindrical lithium battery nut caps.
Background technique
Lithium battery cap is called safety valve, is the security component of dynamic lithium battery, and structure includes top cover, orifice plate, insulation
Circle, sealing ring and explosion rupture disk etc., as a kind of dynamic lithium battery explosion-proof cap component of patent application 20171065000616,
The patent applications such as 2018101875827- power lithium battery cap and a kind of lithium battery cap component of 2018101875579-, no matter
How structure changes, but it includes basic structural components be identical aforementioned structure component.
Above-mentioned traditional lithium battery cap exists as following drawbacks:
(1) whole thicker, occupy steel shell stored energy capacitance；
(2) technique welding times are twice, when easy burn-through, especially explosion rupture disk and top cover weld, using material difference, hot coefficient
Difference leads to the presence of phenomena such as " burn-through " " fried fire ", and technology difficulty is big.
Therefore, it is necessary to design better lithium battery cap.
Summary of the invention
The present invention relates to a kind of half-headed extremely thin type cylindrical lithium battery nut caps, solve the above problem, are changed by structure
Become, it is thin by 45%. so that original nut cap integral thickness drops to 1.90mm from 3.45mm, for having for battery core mostly reserved 1.55mm
Space is imitated, is that the battery of equal unit volume increases volume space.
To achieve this purpose, the present invention adopts the following technical scheme:
A kind of half-headed extremely thin type cylindrical lithium battery nut cap, which is characterized in that successively include orifice plate, insulated ring, explosion rupture disk and
Sealing ring, the centre of the insulated ring are equipped with a through-hole, and the explosion rupture disk is equipped with a boss, and the boss passes through the insulated ring
Upper set through-hole and the orifice plate weld.
Further, the explosion rupture disk is equipped with for the insulated ring to be snapped in the explosion rupture disk round bulge loop,
The radius of the bulge loop and the radius of the insulated ring match.
Further, the bulge loop has angle outward, which is set as 30 ° ~ 75 °.
Further, the orifice plate is equipped with circular weld part, which is set as the circle towards the boss side
Connected in star structure.
Further, the orifice plate is equipped with reserved side, and the insulated ring is equipped with the bound edge for holding orifice plate, the packet
It is matched while with described reserved so that the orifice plate is stuck in the insulated ring.
Further, the orifice plate is a slab construction.
Further, the orifice plate is made with the explosion rupture disk of aluminum material.
Further, the explosion rupture disk is equipped with explosion-proof groove.
Further, the sealing ring is equipped with air hole.
The invention has the benefit that
(1) compared with prior art, structurally, present invention eliminates cap structure, the explosion rupture disk of the prior art is whole thick
Degree is in 3.45mm or so, and integral thickness of the invention drops to 1.90mm, thin by 45%.
(2) compared with prior art, thinned nut cap can be the useful space of the mostly reserved 1.55mm of battery core, be same single
The battery of position volume increases volume space.
(3) compared with prior art, existing 1.12 grams or so are dropped to for 1.75 grams or so of weight originally, weight reduces
At least 30%, improve the gravimetric density ratio of battery.
(4) compared with prior art, in terms of production technology, number of parts is reduced, and has design of cover originally, number of components is
5, be now 4, and without top cover, this reduces packaging technology also correspondingly, has wrapping process in prior art processes, also has
Welding procedure twice is being welded to each other for top cover, explosion rupture disk and orifice plate respectively, and the present patent application only needs once to weld, i.e., anti-
Quick-fried with the welding of orifice plate.Meanwhile welding equipment investment is reduced, the prior art needs 2 laser machines, and the application only needs one
Platform laser machine only retains the lap welding between orifice plate and explosion rupture disk, has saved a laser machine.
(5) compared with prior art, without design of cover, also with regard to reducing environmental pollution without being electroplated.
(6) compared with prior art, explosion rupture disk is equipped with circular boss, and weld thickeies, and prevented laser burn-through can
It can property.
(7) compared with prior art, the application internal resistance is smaller, only aluminium-aluminium connection, connects without aluminium-iron, reduces battery
Fever reduces energy loss.
Detailed description of the invention
Fig. 1 is a kind of overall structure exploded view of half-headed extremely thin type cylindrical lithium battery nut cap of the invention；
Fig. 2 is a kind of structure chart of half-headed extremely thin type cylindrical lithium battery nut cap of the invention；
Fig. 3 is a kind of cut away view of half-headed extremely thin type cylindrical lithium battery nut cap of the invention.
In figure: 1- orifice plate；2- insulated ring；3- explosion rupture disk；4- sealing ring；11- weld part；12- reserves bound edge；21- through-hole；
22- bound edge；31- boss；32- bulge loop；The explosion-proof groove of 33-；41- air hole.
Specific embodiment
To further illustrate the technical scheme of the present invention below with reference to the accompanying drawings and specific embodiments.
Embodiment 1
As shown in Fig. 1 ~ 3, a kind of half-headed extremely thin type cylindrical lithium battery nut cap successively includes orifice plate 1, insulated ring 2, explosion rupture disk
3 and sealing ring 4, the centre of insulated ring 2 is equipped with a through-hole 21, and explosion rupture disk 3 is equipped with a boss 31, and boss 31 passes through institute on insulated ring
The through-hole 21 of setting is welded with 1 phase of orifice plate.In the present embodiment, boss 31 is a truncated cone-shaped structure, and the height of boss 31 can
Pass through the through-hole 21 on insulated ring 2 and contacted with orifice plate 1, orifice plate 1 is equipped with a weld part 11, and weld part 11 and boss 31 are opposite
It answers, is set as round, thickness is thin compared with orifice plate, is groove type structure of the depth direction towards 31 side of boss.
In the present embodiment, explosion rupture disk 3 is equipped with for insulated ring 2 to be snapped in the round bulge loop 32 in explosion rupture disk 3, convex
The radius of ring 32 and the radius of insulated ring 2 match.Bulge loop 32 is to be raised in the one of 3 surface of explosion rupture disk to have the one of snap effect
Insulated ring when prepackage, can be buckled in explosion rupture disk, prevent from loosening, so that welding position is accurate by circular rings.Further,
Bulge loop 32 has angle outward, which is set as 30 ° ~ 75 °.Since insulated ring 2 adopts made of plastic, the setting of bulge loop 32 one
When fixed angle makes holding, there can be the active force held tightly to 2 side of insulated ring, so that buckle is stronger.More into one
Step ground is equipped on insulated ring 2 and correspondingly sets on orifice plate 1 for the bound edge 22 of holding orifice plate 1 in order to which pre-assembled is convenient
There is reserved side 12.In this way after pre-assembled, welding can further prevent the loosening of three, in conjunction with firm compact.
For further reduced thickness, in the present embodiment, orifice plate 1 is set as a slab construction.
In order to weld consistency, orifice plate 1 and explosion rupture disk 3 are made of aluminum.Material is identical, and hot coefficient is identical, when welding, is easy to
It welds, fire will not be fried.
In the present embodiment, explosion rupture disk 3 is equipped with the explosion-proof groove 33 of annular.
In the present embodiment, sealing ring 4 is equipped with several air holes 41.
The technical principle of the invention is described above in combination with a specific embodiment.These descriptions are intended merely to explain of the invention
Principle, and shall not be construed in any way as a limitation of the scope of protection of the invention.Based on the explanation herein, the technology of this field
Personnel can associate with other specific embodiments of the invention without creative labor, these modes are fallen within
Within protection scope of the present invention.
Claims (9)
1. a kind of half-headed extremely thin type cylindrical lithium battery nut cap, which is characterized in that successively include orifice plate (1), insulated ring (2),
The centre of explosion rupture disk (3) and sealing ring (4), the insulated ring (2) is equipped with a through-hole (21), and it is convex that the explosion rupture disk (3) is equipped with one
Platform (31), the boss (31) are mutually welded by the through-hole (21) set on the insulated ring (2) with the orifice plate (1)
It connects.
2. a kind of half-headed extremely thin type cylindrical lithium battery nut cap as described in claim 1, which is characterized in that the explosion rupture disk
(3) it is equipped with for the insulated ring (2) to be snapped on the explosion rupture disk (3) round bulge loop (32), the bulge loop (32)
Radius and the radius of the insulated ring (2) match.
3. a kind of half-headed extremely thin type cylindrical lithium battery nut cap as claimed in claim 2, which is characterized in that the bulge loop
(32) there is angle outward, which is set as 30 ° ~ 75 °.
4. a kind of half-headed extremely thin type cylindrical lithium battery nut cap as claimed in claim 2, which is characterized in that the orifice plate
(1) circular weld part (12) are equipped with, which is set as the circular groove structure towards the boss (31) side.
5. a kind of half-headed extremely thin type cylindrical lithium battery nut cap as claimed in claim 2, which is characterized in that the orifice plate
(1) it is equipped with reserved side (12), the insulated ring (2) is equipped with the bound edge (22) for orifice plate (1) described in holding, the bound edge
(22) it is matched with the reserved side (12) so that the orifice plate (1) is stuck in the insulated ring (2).
6. a kind of half-headed extremely thin type cylindrical lithium battery nut cap as claimed in claim 2, which is characterized in that the orifice plate
It (1) is a slab construction.
7. a kind of half-headed extremely thin type cylindrical lithium battery nut cap as claimed in claim 2, which is characterized in that the orifice plate
(1) it is made with the explosion rupture disk (3) of aluminum material.
8. a kind of half-headed extremely thin type cylindrical lithium battery nut cap as claimed in claim 2, which is characterized in that the explosion rupture disk
(3) it is equipped with the explosion-proof groove (33) of annular.
9. a kind of half-headed extremely thin type cylindrical lithium battery nut cap as claimed in claim 2, which is characterized in that the sealing ring
(4) air hole (41) are equipped with.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811208474.XA CN109256513A (en) | 2018-10-17 | 2018-10-17 | A kind of half-headed extremely thin type cylindrical lithium battery nut cap |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811208474.XA CN109256513A (en) | 2018-10-17 | 2018-10-17 | A kind of half-headed extremely thin type cylindrical lithium battery nut cap |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109256513A true CN109256513A (en) | 2019-01-22 |
Family
ID=65045418
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811208474.XA Pending CN109256513A (en) | 2018-10-17 | 2018-10-17 | A kind of half-headed extremely thin type cylindrical lithium battery nut cap |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109256513A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113764814A (en) * | 2021-08-04 | 2021-12-07 | 上海电气集团电池科技有限公司 | Ventilation valve structure |
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|---|---|---|---|---|
| JP2006185926A (en) * | 2000-02-09 | 2006-07-13 | Ngk Insulators Ltd | Lithium secondary battery |
| US20080085450A1 (en) * | 2006-10-05 | 2008-04-10 | Depalma Christopher L | End cap seal assembly for an electrochemical cell |
| CN203774388U (en) * | 2014-04-23 | 2014-08-13 | 张银波 | Cylindrical lithium battery explosion-proof cap |
| CN205645912U (en) * | 2016-05-19 | 2016-10-12 | 天津力神电池股份有限公司 | Cylindrical lithium -ion battery with novel sealing washer |
| CN106030855A (en) * | 2014-03-28 | 2016-10-12 | 三洋电机株式会社 | Cylindrical sealed battery and battery pack |
| WO2017164000A1 (en) * | 2016-03-25 | 2017-09-28 | 三洋電機株式会社 | Cylindrical battery |
| CN207834376U (en) * | 2018-03-07 | 2018-09-07 | 江苏镭腾能源科技有限公司 | Power lithium battery cap |
| CN207852737U (en) * | 2018-03-07 | 2018-09-11 | 江苏镭腾能源科技有限公司 | Lithium battery cap |
| CN208986073U (en) * | 2018-10-17 | 2019-06-14 | 江苏镭腾能源科技有限公司 | A kind of half-headed extremely thin type cylindrical lithium battery nut cap |
-
2018
- 2018-10-17 CN CN201811208474.XA patent/CN109256513A/en active Pending
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2006185926A (en) * | 2000-02-09 | 2006-07-13 | Ngk Insulators Ltd | Lithium secondary battery |
| US20080085450A1 (en) * | 2006-10-05 | 2008-04-10 | Depalma Christopher L | End cap seal assembly for an electrochemical cell |
| CN106030855A (en) * | 2014-03-28 | 2016-10-12 | 三洋电机株式会社 | Cylindrical sealed battery and battery pack |
| CN203774388U (en) * | 2014-04-23 | 2014-08-13 | 张银波 | Cylindrical lithium battery explosion-proof cap |
| WO2017164000A1 (en) * | 2016-03-25 | 2017-09-28 | 三洋電機株式会社 | Cylindrical battery |
| CN108886122A (en) * | 2016-03-25 | 2018-11-23 | 三洋电机株式会社 | Cylindrical battery |
| CN205645912U (en) * | 2016-05-19 | 2016-10-12 | 天津力神电池股份有限公司 | Cylindrical lithium -ion battery with novel sealing washer |
| CN207834376U (en) * | 2018-03-07 | 2018-09-07 | 江苏镭腾能源科技有限公司 | Power lithium battery cap |
| CN207852737U (en) * | 2018-03-07 | 2018-09-11 | 江苏镭腾能源科技有限公司 | Lithium battery cap |
| CN208986073U (en) * | 2018-10-17 | 2019-06-14 | 江苏镭腾能源科技有限公司 | A kind of half-headed extremely thin type cylindrical lithium battery nut cap |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113764814A (en) * | 2021-08-04 | 2021-12-07 | 上海电气集团电池科技有限公司 | Ventilation valve structure |
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