CN101281957B - Closing battery with explosion-proof function - Google Patents
Closing battery with explosion-proof function Download PDFInfo
- Publication number
- CN101281957B CN101281957B CN200710073994XA CN200710073994A CN101281957B CN 101281957 B CN101281957 B CN 101281957B CN 200710073994X A CN200710073994X A CN 200710073994XA CN 200710073994 A CN200710073994 A CN 200710073994A CN 101281957 B CN101281957 B CN 101281957B
- Authority
- CN
- China
- Prior art keywords
- battery
- explosion
- pressure disc
- rupture pressure
- prevention function
- 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.)
- Active
Links
- 238000004880 explosion Methods 0.000 claims abstract description 21
- 238000007789 sealing Methods 0.000 claims abstract description 11
- 239000000758 substrate Substances 0.000 claims description 28
- 230000002265 prevention Effects 0.000 claims description 14
- 238000007373 indentation Methods 0.000 claims description 13
- 230000005611 electricity Effects 0.000 claims description 2
- 238000003466 welding Methods 0.000 claims description 2
- 229910000838 Al alloy Inorganic materials 0.000 abstract description 6
- 230000000712 assembly Effects 0.000 description 11
- 238000009413 insulation Methods 0.000 description 9
- 229910052751 metal Inorganic materials 0.000 description 9
- 239000002184 metal Substances 0.000 description 9
- 239000004411 aluminium Substances 0.000 description 4
- 229910052782 aluminium Inorganic materials 0.000 description 4
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminum Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 4
- 238000010276 construction Methods 0.000 description 4
- 230000002159 abnormal effect Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000009422 external insulation Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 239000011148 porous material Substances 0.000 description 2
- 229910000679 solder Inorganic materials 0.000 description 2
- HBBGRARXTFLTSG-UHFFFAOYSA-N Lithium Ion Chemical compound [Li+] HBBGRARXTFLTSG-UHFFFAOYSA-N 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 230000002950 deficient Effects 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 238000005755 formation reaction Methods 0.000 description 1
- 238000010030 laminating Methods 0.000 description 1
- 229910001416 lithium ion Inorganic materials 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 238000004080 punching Methods 0.000 description 1
- 230000000630 rising Effects 0.000 description 1
- 239000011122 softwood Substances 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
Images
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
Abstract
The invention discloses a close cell with explosion-resistant function, which includes a cell cylinder, a cell unit contained in the cell cylinder, end cap elements for sealing two ends of the cell cylinder. The end cap elements are respectively connected with anode and cathode of the cell unit, the end cap element of one end is equipped with a explosion-resistant device, wherein the end cap element equipped with the explosion-resistant device is directly connected with the cell cylinder, a insulated layer is arranged between the end cap element of the other end and the cell cylinder. Because the insulated layer is arranged between the end cap element without explosion-resistant structure and the cell cylinder, the end cap element with the explosion-resistant structure can be directly connected width the cell cylinder, so that, a insulated layer is not needed to arrange between the end cap element with the explosion-resistant structure and the cell cylinder, structure of the end cap element is simplified, limitation of cell cylinder intensity is resolved, aluminum alloy cylinder with small intensity can also employ the structure, sealing difficulty and weight of cell is greatly reduced.
Description
Technical field
The present invention relates to a kind of closing battery, in particular, relate to and a kind ofly raise or cell internal pressure when rising the closing battery with explosion prevention function of the pressure release of can breaking when temperature.
Background technology
Along with of the rapidly development of electronic equipments such as audio frequency, camera apparatus, personal computer to lighting, removableization direction, high capacity be that the non-hydrolyzate secondary cell of representative becomes first choice of these electronic equipment driving powers with various alkaline batteries, lithium ion battery.
Because this high-capacity battery is enclosed in the closed container; When faults such as undue charging of charger appearance or mistake use; Regular meeting produces abnormal gas at inside battery; The gathering of abnormal gas can make inside battery produce excessive pressure, thereby has the danger that brings damage and so on because of cell fracture to electronic equipment or people.For preventing the generation of above-mentioned accident, people are being designed with on this battery when cell internal pressure surpasses set point, can discharge the explosion-protection equipment (claiming explosion-proof assembly again) of gas through opening valve body.
Chinese patent ZL99802171.7 discloses a kind of closing battery, and (Granted publication number is: CN1142601C; The day for announcing is: on March 17th, 2004); The inner edge of its battery container open end has a closure member, and closure member is made up of the metal forming that a valve element and continuous laminating form; The valve element is formed by metal substrate, and metal substrate is provided with the punching opening, by the metal forming sealing of the inner surface that is pressed onto metal substrate; Metal forming is connected to lead-in wire through lead-in wire and covers; The positive pole of the battery unit that the lead-in wire lid is interior with being arranged on battery container is connected.The outer rim of lead-in wire lid is provided with the external insulation packing ring, and itself and battery container are insulated; The inner edge of lead-in wire lid also is provided with interior insulating washer, makes the insulation of its edge and metal substrate and closing cover.Accomplish sealing through mechanical flange manner between battery container, external insulation packing ring, lead-in wire lid, interior insulating washer and the closure member.When cell internal pressure rose, the lead-in wire that connects metal forming and lead-in wire lid broke off, and cuts off the electric current between battery unit and the metal forming; After cutting off electric current, if cell internal pressure still continues to raise, when pressure surpassed the predetermined pressure that rupture pressure disc can bear, rupture pressure disc was torn, the battery pressure release, thus avoid battery explosion.
Because existing battery with explosion-protection equipment all is anodal part and battery barrel insulation with battery, and also explosion-protection equipment is arranged on the anodal part of battery, therefore, the positive pole of battery is sealed, the parts of sealing are many simultaneously.Thereby at present, all have between Explosion-proof cap assembly and the battery case of above-mentioned explosion-protection equipment all is to adopt mechanical flange manner to accomplish sealing.But,, can adopt the battery of above-mentioned explosion-protection equipment to be the battery of the high battery case of mechanical strength, most often cylindrical steel battery case because the wall thickness of battery case receives certain limitation.And for adopting the little battery like material manufacture batteries containers such as aluminium, aluminium alloys of mechanical strength; Owing to should not adopt mechanical flange mode to seal; Above-mentioned explosion-protection equipment can't be applied to matter softwood matter manufacture batteries containers such as aluminium, aluminium alloys; It seals the battery that can only adopt solder up, and safety device is not set on the cover plate assembly of this battery.Therefore, there is the hidden danger on the safety in this type of battery.
Summary of the invention
For overcoming above-mentioned defective; The object of the invention is to overcome above-mentioned prior art can not be provided with explosion-protection equipment on the little cap assemblies of battery case mechanical strength technological deficiency; No matter high to mechanical strength a kind of battery case be provided, as: the box hat battery case adopted, still the battery case lower to mechanical strength; As the battery case that adopts aluminium, aluminium alloy etc. to make, the closing battery with explosion prevention function that can both be suitable for.
The objective of the invention is to realize through following technical scheme:
A kind of closing battery with explosion prevention function; The end-cap assembly that comprise battery barrel, be contained in battery unit in the battery barrel, is used for sealed cell cylindrical shell two ends is electrically connected with the battery unit positive and negative electrode respectively; Wherein the end-cap assembly of an end is provided with explosion-protection equipment; It is characterized in that: the end-cap assembly that is provided with explosion-protection equipment directly is connected with battery barrel, is provided with insulating barrier between the end-cap assembly of the other end and the battery barrel.
On the said structure basis, wherein:
The described end-cap assembly that is provided with explosion-protection equipment is connected with the positive electrical of battery unit; The end-cap assembly of the other end is connected with the negative electricity of battery unit.This is a kind of connected mode of battery unit.
The said end-cap assembly that is provided with explosion-protection equipment comprises the substrate that is tightly connected with battery barrel one end; Said explosion-protection equipment comprises the rupture pressure disc that is arranged on the substrate with the substrate one, and rupture pressure disc is electrically connected with the conducting terminal of battery unit with lead-in wire lid between the battery unit through being arranged on rupture pressure disc.Such design makes structurally to have mutual independence between the substrate be used for sealed battery container and the battery barrel, and the substrate that has explosion-protection equipment just can be made separately in advance, assembles simple and conveniently, has improved efficiency of assembling.
Said rupture pressure disc is arranged on the substrate middle part.When such design can make inside battery gas expand, the pressure distribution on the rupture pressure disc was even.
Described rupture pressure disc is umbrella, and wherein the direction of mind-set battery unit is sunk.Such design makes when inside battery gas expands, and through the rupture pressure disc jack-up with the umbrella dress, makes the interior sealed space of rupture pressure disc become big, alleviates the pressure of a part of inside battery.
Said lead-in wire lid only passes through the summit welding of the bottom of sinking of center and rupture pressure disc to be fixed; The edge of lead-in wire lid is through insulating between insulating part and the substrate.The lead-in wire lid of battery and rupture pressure disc, substrate turned over all over pressing together through machinery in the past; It is big that the air pressure of battery becomes; When the lead-in wire between lead-in wire lid and the rupture pressure disc is broken off; Because the relative position between lead-in wire lid and the rupture pressure disc is very near, usually can leaded disconnection lead-in wire lid and rupture pressure disc between not yet the situation of insulation occur.Design now makes the air pressure in battery become big, and after rupture pressure disc jack-up, rupture pressure disc breaks off with the pad of lead-in wire lid, and the lead-in wire lid drops together with the lead-in wire of in battery unit, drawing, and has thoroughly guaranteed the smooth outage of battery.
Said rupture pressure disc is provided with indentation.Through indentation, can set the fracture pressure value of battery accurately.
Said indentation is the annular of sealing.The indentation of the closed ring rupture pressure disc of being more convenient for breaks.
Described rupture pressure disc is umbrella and sink to the direction of battery unit, and the summit bottom rupture pressure disc sink is positioned at annular indentation inside with the tie point that the lead-in wire lid is connected.Such design makes stressed more even on the rupture pressure disc.
Welded seal between said substrate and the battery barrel.
The present invention is owing to be provided with insulating barrier between end-cap assembly that does not have blast resistance construction and battery barrel; The end-cap assembly that is provided with blast resistance construction can directly be connected with battery barrel; Thereby need not increase and make the insulating barrier that insulate between the end-cap assembly that is provided with blast resistance construction and the battery barrel; Simplified the structure of end-cap assembly, just can seal end-cap assembly and the battery barrel that is provided with blast resistance construction, efficiently solved the restriction of battery battery case intensity through the flange technology; Even the aluminium alloy cylindrical body that intensity is very little also can adopt this structure, alleviated the deadweight of sealing difficulty and battery of battery greatly.
Description of drawings
Fig. 1 is the internal structure sketch map of the embodiment of the invention.
Wherein: 1, battery barrel, 2, battery unit, 3, first cap assemblies, 4, second cap assemblies, 5, substrate; 7, pore, 6, over cap, 8, the lead-in wire lid, 9, insulating part; 10, rupture pressure disc, 11, air-vent, 12, cavity, 13, rivet; 14, indentation, 15, insulation spacer, 16, insulation spacer, 17, insulating blanket.
Embodiment
Below in conjunction with accompanying drawing and preferred embodiment the present invention is described further.
Fig. 1 shows a kind of concrete structure with closing battery of explosion prevention function, comprising: battery barrel 1, be contained in battery unit 2, first cap assemblies 3 that is used for extraction electrode and sealed cell cylindrical shell 1 and second cap assemblies 4 in the battery barrel 1; First cap assemblies 3 is connected with the negative pole of battery unit 2, and through insulating blanket 17 and battery barrel 1 insulation; Second cap assemblies 4 that is connected with the positive pole of battery unit 2 comprises substrate 5, has the over cap 6 of pore 7, lead-in wire cover 8 and insulating part 9, and substrate 5 is welded direct on the battery barrel 1 its sealing, the center formation thin-walled rupture pressure disc 10 of substrate 5; It is protruding to inside battery that rupture pressure disc 10 is umbrella, and protruding part is against lead-in wire and covers 8 centers, covers 8 with lead-in wire and be electrically connected; Lead-in wire cover 8 peripheries and replaces on insulating part 9, is fixed to substrate 5 through insulating part 9, and the lead-in wire of being drawn by the positive pole of battery unit 2 covers 8 and is connected with going between; Lead-in wire covers 8 and is provided with air-vent 11, can make inside battery air pressure shorter with the rupture pressure disc pressure balance time; Over cap 6 is to outer lug, itself and be to the inside battery convexity between the rupture pressure disc 10 of umbrella and form cavity 12; Over cap 6 is riveted together through rivet 13 and substrate 1.In order to make battery unit 2 and battery barrel 1 insulation, between battery unit 2 and first cap assemblies 3 and second cap assemblies 4, be provided with insulation spacer 15,16.
It mainly is for gas in battery increases that rupture pressure disc 10 is umbrella dress, strives for that through the distortion of amplitude peak more space cushions pressure when air pressure becomes big, and the rupture pressure disc of other shape also is operable such as the rupture pressure disc of plane formula.Rupture pressure disc 10 is provided with annular indentation 14, and rupture pressure disc 10 covers 8 tie points that are electrically connected with lead-in wire and is positioned at annular indentation 14 inside, and the setting of indentation makes the setting of fracture pressure value of battery more accurate.
When battery occurred because of faults such as undue charging or mistake uses, the gas that inside battery produces increased, and cell internal pressure increases.The gas permeation lead-in wire covers rupture pressure disc 10 jack-up that the air-vent 11 on 8 is adorned umbrella, and sealed space become big in the rupture pressure disc 10, alleviates the pressure of a part of inside battery; Because the effect of insulating part 9, rupture pressure disc 10 separates with the solder joint that lead-in wire cover on 8, lead-in wire cover 8 and insulating part 10 fall, make inside battery thoroughly cut off the power supply; If the gas pressure of inside battery further rises, when the pressure that produces when inside battery arrived the preset fracture pressure value of rupture pressure disc 10, rupture pressure disc 10 was torn, and unnecessary gas is discharged.
Use existing explosion-protection equipment also can realize the object of the invention; As long as first cap assemblies 3 and battery barrel 1 insulation, just do not need insulating part between second cap assemblies 4 that will have an explosion-protection equipment and the battery barrel 1, just can directly connect; Just can come battery barrel 1 sealing through mechanical flange; No matter high battery case to mechanical strength, as: the box hat battery case adopted, still the battery case lower to mechanical strength; As the battery case that adopts aluminium, aluminium alloy etc. to make, can both be suitable for.
Owing to become one with substrate and explosion-protection equipment; Thereby be used for structurally having mutual independence between substrate and the battery barrel of sealed battery container; The substrate that has explosion-protection equipment just can be made separately in advance, assembles simple and conveniently, has improved efficiency of assembling.
Above content is to combine concrete preferred implementation to the further explain that the present invention did, and can not assert that practical implementation of the present invention is confined to these explanations.As: the indentation that is provided with on the rupture pressure disc both can be circular, also can be square or pentagonal; Rupture pressure disc both can be welded direct to the lead-in wire cover, also can through the lead-in wire, even through the lead-in wire that can control on/off be connected to the lead-in wire cover.For the those of ordinary skill of technical field under the present invention, under the prerequisite that does not break away from the present invention's design, can also make some simple deduction or replace, all should be regarded as belonging to protection scope of the present invention.
Claims (9)
1. closing battery with explosion prevention function; The end-cap assembly that comprise battery barrel, be contained in battery unit in the battery barrel, is used for sealed cell cylindrical shell two ends is electrically connected with the battery unit positive and negative electrode respectively; Wherein the end-cap assembly of an end is provided with explosion-protection equipment; It is characterized in that: the end-cap assembly that is provided with explosion-protection equipment directly is connected with battery barrel; Be provided with insulating barrier between the end-cap assembly of the other end and the battery barrel, the described end-cap assembly that is provided with explosion-protection equipment is connected with the positive electrical of battery unit; The end-cap assembly of the other end is connected with the negative electricity of battery unit.
2. a kind of closing battery as claimed in claim 1 with explosion prevention function; It is characterized in that: the said end-cap assembly that is provided with explosion-protection equipment comprises the substrate that is tightly connected with battery barrel one end; Said explosion-protection equipment comprises the rupture pressure disc that is arranged on the substrate with the substrate one, and rupture pressure disc is electrically connected with the conducting terminal of battery unit with lead-in wire lid between the battery unit through being arranged on rupture pressure disc.
3. a kind of closing battery with explosion prevention function as claimed in claim 2 is characterized in that: said rupture pressure disc is arranged on the substrate middle part.
4. a kind of closing battery as claimed in claim 3 with explosion prevention function, it is characterized in that: described rupture pressure disc is umbrella, and wherein the direction of mind-set battery unit is sunk.
5. a kind of closing battery with explosion prevention function as claimed in claim 4 is characterized in that: said lead-in wire lid only passes through the summit welding of the bottom of sinking of center and rupture pressure disc to be fixed; The edge of lead-in wire lid is through insulating between insulating part and the substrate.
6. a kind of closing battery with explosion prevention function as claimed in claim 3, it is characterized in that: said rupture pressure disc is provided with indentation.
7. a kind of closing battery with explosion prevention function as claimed in claim 6 is characterized in that: said indentation is the annular of sealing.
8. a kind of closing battery with explosion prevention function as claimed in claim 7 is characterized in that: described rupture pressure disc is umbrella and sink to the direction of battery unit, and the summit bottom rupture pressure disc sink is positioned at annular indentation inside with the tie point that the lead-in wire lid is connected.
9. a kind of closing battery with explosion prevention function as claimed in claim 1 is characterized in that: welded seal between said substrate and the battery barrel.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200710073994XA CN101281957B (en) | 2007-04-05 | 2007-04-05 | Closing battery with explosion-proof function |
| HK09102732.0A HK1122405A1 (en) | 2007-04-05 | 2009-03-23 | Seal battery with anti-explosion functionl |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200710073994XA CN101281957B (en) | 2007-04-05 | 2007-04-05 | Closing battery with explosion-proof function |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101281957A CN101281957A (en) | 2008-10-08 |
| CN101281957B true CN101281957B (en) | 2012-05-23 |
Family
ID=40014315
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN200710073994XA Active CN101281957B (en) | 2007-04-05 | 2007-04-05 | Closing battery with explosion-proof function |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN101281957B (en) |
| HK (1) | HK1122405A1 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TWI587559B (en) * | 2016-08-08 | 2017-06-11 | A battery with an explosion-proof structure |
Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101783399B (en) * | 2009-12-30 | 2013-06-05 | 天津三合意电子有限公司 | Battery cover anti-explosion membrane notching processing method |
| CN102280654B (en) * | 2010-06-11 | 2015-06-17 | 深圳市比克电池有限公司 | Lithium ion battery |
| CN104577029A (en) * | 2014-12-25 | 2015-04-29 | 宁德新能源科技有限公司 | Safety device for lithium ion battery |
| CN107316956A (en) * | 2016-04-26 | 2017-11-03 | 宁德时代新能源科技股份有限公司 | Explosion-proof assembly and secondary battery top cap |
| CN214336854U (en) * | 2020-11-24 | 2021-10-01 | 深圳市比克动力电池有限公司 | Cylindrical lithium battery |
| EP4075584A1 (en) * | 2021-02-09 | 2022-10-19 | Contemporary Amperex Technology Co., Limited | Battery cell, battery, electrical device, and method for manufacturing battery cell |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1200199A (en) * | 1995-10-31 | 1998-11-25 | 松下电器产业株式会社 | Explosion-proof seal plate for enclosed type cell and production method thereof |
| CN1267919A (en) * | 1999-03-19 | 2000-09-27 | 三洋电机株式会社 | Sealed battery with less electrolyte leakage |
| CN2842751Y (en) * | 2005-07-28 | 2006-11-29 | 熊超 | Column-type constant-pressure anti-burst cell lid-cap |
-
2007
- 2007-04-05 CN CN200710073994XA patent/CN101281957B/en active Active
-
2009
- 2009-03-23 HK HK09102732.0A patent/HK1122405A1/en unknown
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1200199A (en) * | 1995-10-31 | 1998-11-25 | 松下电器产业株式会社 | Explosion-proof seal plate for enclosed type cell and production method thereof |
| CN1267919A (en) * | 1999-03-19 | 2000-09-27 | 三洋电机株式会社 | Sealed battery with less electrolyte leakage |
| CN2842751Y (en) * | 2005-07-28 | 2006-11-29 | 熊超 | Column-type constant-pressure anti-burst cell lid-cap |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TWI587559B (en) * | 2016-08-08 | 2017-06-11 | A battery with an explosion-proof structure |
Also Published As
| Publication number | Publication date |
|---|---|
| CN101281957A (en) | 2008-10-08 |
| HK1122405A1 (en) | 2009-05-15 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN101281957B (en) | Closing battery with explosion-proof function | |
| KR101274806B1 (en) | Rechargeable battery | |
| EP1973182B1 (en) | Secondary batery | |
| JP5520912B2 (en) | Secondary battery | |
| CN101257098B (en) | Battery and battery seal component convenient for assembling | |
| US20100233530A1 (en) | battery and battery enveloping assembly convenient for assembly | |
| CN102136552B (en) | The manufacture method of battery protecting apparatus, battery and battery protecting apparatus | |
| JP2012212645A (en) | Secondary cell | |
| KR101667966B1 (en) | Cap assembly and secondary battery including the same | |
| KR101390527B1 (en) | Ptc-hybrid safety vent, and secondary battery comprising the same | |
| KR101657332B1 (en) | Rechargeable battery | |
| KR101666257B1 (en) | Rechargeable battery for supressing arc occurance | |
| US20100143796A1 (en) | Battery enveloping assembly and battery | |
| CN101304078B (en) | Explosion-proof battery | |
| CN206742294U (en) | Battery cap and battery | |
| CN102142531A (en) | Battery, battery protection device and manufacture method thereof | |
| KR20180005455A (en) | Cap assembly and secondary battery using the same | |
| WO2015079672A1 (en) | Cylindrical battery | |
| KR20120102347A (en) | Cylindrical secondary battery of improved safety | |
| KR20190033900A (en) | Cap Assembly for Cylindrical Battery Cell Comprising Elastic Member | |
| CN101188276B (en) | Battery | |
| WO2015068353A1 (en) | Stopper for sealed battery, and sealed battery | |
| CN206619649U (en) | A kind of lithium-manganese cell | |
| KR102314627B1 (en) | Secondary battery | |
| KR101279408B1 (en) | Method for manufacturing secondary battery |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| REG | Reference to a national code |
Ref country code: HK Ref legal event code: DE Ref document number: 1122405 Country of ref document: HK |
|
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| REG | Reference to a national code |
Ref country code: HK Ref legal event code: GR Ref document number: 1122405 Country of ref document: HK |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20160822 Address after: Kwai Chung street Beek Industrial Park in Longgang District of Shenzhen City, Guangdong Province, No. 6 building 518000 Patentee after: SHENZHEN BAK POWER BATTERY Co.,Ltd. Address before: Kwai Chung street Beek Industrial Park in Longgang District of Shenzhen City, Guangdong province 518119 Patentee before: SHENZHEN BAK BATTERY Co.,Ltd. |
|
| PP01 | Preservation of patent right | ||
| PP01 | Preservation of patent right |
Effective date of registration: 20191022 Granted publication date: 20120523 |
|
| PD01 | Discharge of preservation of patent | ||
| PD01 | Discharge of preservation of patent |
Date of cancellation: 20221022 Granted publication date: 20120523 |
|
| PP01 | Preservation of patent right | ||
| PP01 | Preservation of patent right |
Effective date of registration: 20221022 Granted publication date: 20120523 |