CN105470418A - Cylindrical lithium battery cap - Google Patents
Cylindrical lithium battery cap Download PDFInfo
- Publication number
- CN105470418A CN105470418A CN201511009325.7A CN201511009325A CN105470418A CN 105470418 A CN105470418 A CN 105470418A CN 201511009325 A CN201511009325 A CN 201511009325A CN 105470418 A CN105470418 A CN 105470418A
- Authority
- CN
- China
- Prior art keywords
- explosion
- lithium battery
- battery cap
- cylindrical lithium
- proof diaphragm
- 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
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
- 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
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- 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
- H01M10/0525—Rocking-chair batteries, i.e. batteries with lithium insertion or intercalation in both electrodes; Lithium-ion batteries
-
- 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 relates to a cylindrical lithium battery cap. The cylindrical lithium battery cap is characterized by comprising an outer seal ring, an upper cover, an explosion-proof diaphragm and a pore plate, wherein a round bump structure protrudes downwards in a central region of the explosion-proof diaphragm; the section of the bent part of the circumferential bump of the round bump structure is in an S shape; a circle of annular pressure relief notch groove is formed in the bottom surface of the explosion-proof diaphragm in the round bump structure; and the S-shaped bent part of the round bump structure is supported on the seal ring or the pore plate.
Description
Technical field
The present invention relates to a kind of block, is a kind of cylindrical lithium battery cap specifically.
Background technology
Lithium ion battery cover is the critical component of lithium ion battery, and it is directly connected to the reliability of lithium ion battery, useful life, amount of capacity, producers and consumers's production and application safety.Existing lithium battery cap adopts sealed outer ring parcel upper cover, pad and rupture pressure disc, and orifice plate is welded below rupture pressure disc, for the lithium battery resistance higher with resistance requirement, upper cover, welding between pad and rupture pressure disc directly have influence on the resistance of block, material, the processing of pad add production cost, production process, the performance difference of pad and upper cover and rupture pressure disc, the mounting process precision spread in performance that causes blocking a shot is uneven, impact block quality.In addition, when lithium battery uses, due to external factor impacts such as vibrations, extruding, the explosion-proof diaphragm of its block is yielding by shaking, extruding, and causes its explosion-proof upset difficulty maybe cannot overturn, there is use safety hidden danger.
Summary of the invention
For the above-mentioned deficiency of prior art, the invention provides that a kind of structure is simple, cost is low, processing, easy to assembly, elasticity anti-extrusion deformation, antidetonation, the cylindrical lithium battery cap of can effectively guarantee to block a shot low resistive stabilizability and safety in utilization.
Technical scheme of the present invention is: a kind of cylindrical lithium battery cap, it is characterized in that: comprise sealed outer ring, upper cover, explosion-proof diaphragm and orifice plate, described explosion-proof diaphragm central area is to the rounded bulge-structure of lower convexity, the circumferential protrusion bending part cross section of circular protrusions structure is " S " type, explosion-proof diaphragm bottom surface in circular protrusions structure is provided with a ring shape pressure release cutting, and " S " type bending part of circular protrusions structure is supported on sealing ring or is supported on orifice plate.
Further, the periphery of described orifice plate is provided with circle flange upward, and " S " type bending part of circular protrusions structure is supported on flange or flange inner ring or flange inner chamber.
Further, described sealed outer ring hollow out of going to the bottom is connected with a circle brace table, and " S " type bending part of circular protrusions structure is supported on brace table.
Further, the bending sweat soldering inwardly of described explosion-proof diaphragm top surrounding is in the annular region on upper cover four limit.
Further, the bending inwardly of described sealed outer ring top surrounding compresses explosion-proof diaphragm bending region.
The circular protrusions structure bending part of explosion-proof diaphragm upset explosion is arranged to " S " type by the present invention, in addition rupture pressure disc overturns above bending welding upper cover upward and sealed outer ring bending inwardly compresses rupture pressure disc and upper cover, its structure is simple, compact, produce, assemble convenient, cost is low, " S " type bending part of explosion-proof diaphragm upset explosion can effectively prevent explosion-proof diaphragm by vibrations, crimp, elastic anti-seismic avoids distortion, on explosion-proof diaphragm upset explosion without impact, effectively guarantee stability and the usage safety performance of block.
Accompanying drawing explanation
Fig. 1 is structural representation of the present invention.
In figure: sealed outer ring 1, outer support platform 2, inner support platform 3, upper cover 4, upper cover annular region 5, explosion-proof diaphragm 6, explosion-proof diaphragm bending region 7, solder joint 8, annular pressure release cutting 9, orifice plate 10, flange 11.
Embodiment
Be described further below in conjunction with drawings and Examples.
Shown in Fig. 1: a kind of cylindrical lithium battery cap comprises sealed outer ring 1, upper cover 4, explosion-proof diaphragm 6 and orifice plate 10, explosion-proof diaphragm 6 central area is to the rounded bulge-structure of lower convexity, the circumferential protrusion bending part cross section of circular protrusions structure is " S " type, explosion-proof diaphragm 6 bottom surface in circular protrusions structure is provided with a ring shape pressure release cutting 9, surrounding explosion-proof diaphragm bending region 7 bending inwardly of explosion-proof diaphragm 6 top is through the upper cover annular region 5 of solder joint 8 sweat soldering in upper cover 4 four limit, and the surrounding bending inwardly of sealed outer ring top compresses explosion-proof diaphragm bending region.Sealed outer ring 1 hollow out of going to the bottom is connected with the coaxial inside and outside brace table of a circle 3,2, " S " type bending part of circular protrusions structure is supported on inner support platform 3, orifice plate 10 is welded in below circular protrusions structure and its periphery and is provided with circle flange 11 upward, and flange 11 is limited between sealed outer ring 1 time inside and outside brace table 3,2.
Claims (5)
1. a cylindrical lithium battery cap, it is characterized in that: comprise sealed outer ring, upper cover, explosion-proof diaphragm and orifice plate, described explosion-proof diaphragm central area is to the rounded bulge-structure of lower convexity, the circumferential protrusion bending part cross section of circular protrusions structure is " S " type, explosion-proof diaphragm bottom surface in circular protrusions structure is provided with a ring shape pressure release cutting, and " S " type bending part of circular protrusions structure is supported on sealing ring or is supported on orifice plate.
2. a kind of cylindrical lithium battery cap according to claim 1, is characterized in that: the periphery of described orifice plate is provided with circle flange upward, and " S " type bending part of circular protrusions structure is supported on flange or flange inner ring or flange inner chamber.
3. a kind of cylindrical lithium battery cap according to claim 1, is characterized in that: described sealed outer ring hollow out of going to the bottom is connected with a circle brace table, and " S " type bending part of circular protrusions structure is supported on brace table.
4. a kind of cylindrical lithium battery cap according to claim 1, is characterized in that: the bending sweat soldering inwardly of described explosion-proof diaphragm top surrounding is in the annular region on upper cover four limit.
5. a kind of cylindrical lithium battery cap according to claim 1, is characterized in that: the bending inwardly of described sealed outer ring top surrounding compresses explosion-proof diaphragm bending region.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201511009325.7A CN105470418A (en) | 2015-12-30 | 2015-12-30 | Cylindrical lithium battery cap |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201511009325.7A CN105470418A (en) | 2015-12-30 | 2015-12-30 | Cylindrical lithium battery cap |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105470418A true CN105470418A (en) | 2016-04-06 |
Family
ID=55607923
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201511009325.7A Pending CN105470418A (en) | 2015-12-30 | 2015-12-30 | Cylindrical lithium battery cap |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105470418A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2019114776A1 (en) * | 2017-12-13 | 2019-06-20 | 比亚迪股份有限公司 | Battery system and electric automobile |
| WO2019114775A1 (en) * | 2017-12-13 | 2019-06-20 | 比亚迪股份有限公司 | Battery cover plate assembly, single cell battery, battery module, power battery, and electric vehicle |
| WO2019114773A1 (en) * | 2017-12-13 | 2019-06-20 | 比亚迪股份有限公司 | Current interruption device and flipping member therefor, battery cover plate assembly, single cell, battery module, power battery and electric vehicle |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201667353U (en) * | 2009-10-13 | 2010-12-08 | 东莞新能源科技有限公司 | Combined covering cap of battery |
| CN103236505A (en) * | 2013-04-28 | 2013-08-07 | 泰兴市振兴电子有限公司 | Power type lithium ion battery nut cap and welding process thereof |
| CN103296227A (en) * | 2013-05-20 | 2013-09-11 | 泰兴市振兴电子有限公司 | Power type lithium ion battery cover and welding process thereof |
| CN205248322U (en) * | 2015-12-30 | 2016-05-18 | 泰兴市振兴电子有限公司 | Cylindrical lithium battery nut cap |
-
2015
- 2015-12-30 CN CN201511009325.7A patent/CN105470418A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201667353U (en) * | 2009-10-13 | 2010-12-08 | 东莞新能源科技有限公司 | Combined covering cap of battery |
| CN103236505A (en) * | 2013-04-28 | 2013-08-07 | 泰兴市振兴电子有限公司 | Power type lithium ion battery nut cap and welding process thereof |
| CN103296227A (en) * | 2013-05-20 | 2013-09-11 | 泰兴市振兴电子有限公司 | Power type lithium ion battery cover and welding process thereof |
| CN205248322U (en) * | 2015-12-30 | 2016-05-18 | 泰兴市振兴电子有限公司 | Cylindrical lithium battery nut cap |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2019114776A1 (en) * | 2017-12-13 | 2019-06-20 | 比亚迪股份有限公司 | Battery system and electric automobile |
| WO2019114775A1 (en) * | 2017-12-13 | 2019-06-20 | 比亚迪股份有限公司 | Battery cover plate assembly, single cell battery, battery module, power battery, and electric vehicle |
| WO2019114773A1 (en) * | 2017-12-13 | 2019-06-20 | 比亚迪股份有限公司 | Current interruption device and flipping member therefor, battery cover plate assembly, single cell, battery module, power battery and electric vehicle |
| CN109920962A (en) * | 2017-12-13 | 2019-06-21 | 比亚迪股份有限公司 | Battery system and electric car |
| CN109920959A (en) * | 2017-12-13 | 2019-06-21 | 比亚迪股份有限公司 | Current interrupt device and its flip piece, battery cover board assembly, single battery, battery modules, power battery and electric car |
| CN109920963A (en) * | 2017-12-13 | 2019-06-21 | 比亚迪股份有限公司 | Battery cover board assembly, single battery, battery modules, power battery and electric car |
| US11424519B2 (en) | 2017-12-13 | 2022-08-23 | Byd Company Limited | Current interrupt apparatus and flipping member thereof, battery cover plate assembly, cell, battery module, power battery, and electric vehicle |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| WD01 | Invention patent application deemed withdrawn after publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20160406 |