CN101916832A - Three-level protective lithium ion battery cover - Google Patents
Three-level protective lithium ion battery cover Download PDFInfo
- Publication number
- CN101916832A CN101916832A CN2010102483501A CN201010248350A CN101916832A CN 101916832 A CN101916832 A CN 101916832A CN 2010102483501 A CN2010102483501 A CN 2010102483501A CN 201010248350 A CN201010248350 A CN 201010248350A CN 101916832 A CN101916832 A CN 101916832A
- Authority
- CN
- China
- Prior art keywords
- explosion
- lithium ion
- ion battery
- level protective
- battery cover
- 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
- HBBGRARXTFLTSG-UHFFFAOYSA-N Lithium ion Chemical compound [Li+] HBBGRARXTFLTSG-UHFFFAOYSA-N 0.000 title claims abstract description 35
- 229910001416 lithium ion Inorganic materials 0.000 title claims abstract description 35
- 230000001681 protective effect Effects 0.000 title claims abstract description 30
- 238000009413 insulation Methods 0.000 claims abstract description 16
- 238000007789 sealing Methods 0.000 claims description 23
- 238000007373 indentation Methods 0.000 claims description 11
- 229910000679 solder Inorganic materials 0.000 claims description 9
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 claims description 7
- 238000003466 welding Methods 0.000 claims description 5
- 239000000463 material Substances 0.000 claims description 3
- 229910052759 nickel Inorganic materials 0.000 claims description 3
- 239000012528 membrane Substances 0.000 abstract 5
- 238000005516 engineering process Methods 0.000 description 5
- 230000000694 effects Effects 0.000 description 4
- 238000010276 construction Methods 0.000 description 3
- 238000012856 packing Methods 0.000 description 3
- 239000004020 conductor Substances 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000005538 encapsulation Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000004880 explosion Methods 0.000 description 1
- 239000002360 explosive Substances 0.000 description 1
- 238000009776 industrial production Methods 0.000 description 1
- 239000012212 insulator Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000008520 organization Effects 0.000 description 1
Images
Classifications
-
- 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
- H01M50/50—Current conducting connections for cells or batteries
- H01M50/572—Means for preventing undesired use or discharge
- H01M50/584—Means for preventing undesired use or discharge for preventing incorrect connections inside or outside the batteries
- H01M50/586—Means for preventing undesired use or discharge for preventing incorrect connections inside or outside the batteries inside the batteries, e.g. incorrect connections of electrodes
-
- 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
- H01M50/166—Lids or covers characterised by the methods of assembling casings with lids
- H01M50/171—Lids or covers characterised by the methods of assembling casings with lids using adhesives or sealing agents
-
- 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
- H01M50/183—Sealing members
- H01M50/184—Sealing members characterised by their shape or structure
-
- 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
- H01M50/183—Sealing members
- H01M50/186—Sealing members characterised by the disposition of the sealing members
-
- 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
-
- 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
- H01M50/50—Current conducting connections for cells or batteries
- H01M50/572—Means for preventing undesired use or discharge
- H01M50/574—Devices or arrangements for the interruption of current
-
- 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
- H01M50/50—Current conducting connections for cells or batteries
- H01M50/572—Means for preventing undesired use or discharge
- H01M50/584—Means for preventing undesired use or discharge for preventing incorrect connections inside or outside the batteries
- H01M50/59—Means for preventing undesired use or discharge for preventing incorrect connections inside or outside the batteries characterised by the protection means
- H01M50/593—Spacers; Insulating plates
-
- 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)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Gas Exhaust Devices For Batteries (AREA)
- Connection Of Batteries Or Terminals (AREA)
- Sealing Battery Cases Or Jackets (AREA)
Abstract
The invention relates to a three-level protective lithium ion battery cover, and belongs to the technical field of lithium ion batteries. The three-level protective lithium ion battery cover comprises a top cover, an explosionproof membrane and a porous plate, which are combined together in turn. The three-level protective lithium ion battery cover is characterized in that: the explosionproof membrane and the porous plate are welded together; the explosionproof membrane is provided with a round nick; a PTC thermistor plate is arranged between the top cover and the explosionproof membrane; a seal ring is arranged between the top cover, the PTC thermistor plate, the explosionproof membrane and a battery shell; and the seal ring and an insulation pad of the porous plate have a split assembly structure. The three-level protective lithium ion battery cover has the advantages of simple structure, convenient assembly, stable and reliable performance, good explosionproof performance, high safety grade, long service life, wide applicable range and the like.
Description
Technical field
The invention belongs to technical field of lithium ion, particularly relate to a kind of three-level protective lithium ion battery cover.
Background technology
At present, characteristics such as lithium ion battery has that volume is little, in light weight, electric weight is strong, memoryless, environmental protection are widely used in industrial production and the daily life.Existing lithium ion battery cover comprises top cover, explosion-proof diaphragm, packing ring and orifice plate, and top cover and explosion-proof diaphragm, packing ring and orifice plate are combined successively.The explosive-proof grade of this lithium ion battery is low, poor safety performance.Quality problems such as and sealing ring and packing ring be integral structure, and when the battery cap of this structure was put into the battery case encapsulation, orifice plate easily produced distortion, come off.Cause explosion-proof effect to guarantee, reduced the performance rate of battery simultaneously, have technological deficiency and potential safety hazard, even can cause a serious accident etc.
Summary of the invention
The present invention provides a kind of three-level protective lithium ion battery cover for solving the technical problem that exists in the known technology.
The purpose of this invention is to provide a kind of explosion-proof security problem that solves battery, that the battery of assembling has is simple in structure, easy to assembly, stable performance, explosion-proof performance is excellent, safe class is high, the three-level protective lithium ion battery cover of long service life, characteristics such as applied widely.
The technical scheme that the present invention takes for the technical problem that exists in the solution known technology is:
A kind of three-level protective lithium ion battery cover; comprise top cover, explosion-proof diaphragm, orifice plate; top cover and explosion-proof diaphragm and orifice plate are combined successively; be characterized in: explosion-proof diaphragm and orifice plate weld together; on the explosion-proof diaphragm circular score line is arranged; PTC thermistor plate is housed between top cover and explosion-proof diaphragm, is provided with sealing ring between top cover, PTC thermistor plate and explosion-proof diaphragm and battery case, sealing ring and orifice plate insulation cushion are the separate type assembly structure.
The present invention can also adopt following technical scheme:
Described three-level protective lithium ion battery cover is characterized in: between sealing ring and orifice plate insulation cushion the sealing ring deformation space is arranged, sealing ring is a circular groove formula structure, and thickness is the 1-5 millimeter, and the orifice plate insulation cushion is a butterfly structure, and thickness is the 0.3-1.0 millimeter.
Described three-level protective lithium ion battery cover is characterized in: PTC thermistor plate is for circular, and thickness is the 0.2-0.5 millimeter.
Described three-level protective lithium ion battery cover is characterized in: PTC thermistor plate two surfaces are the pure nickel paper tinsel, and the centre is the thermistor macromolecular material.
Described three-level protective lithium ion battery cover is characterized in: explosion-proof diaphragm is provided with circular explosion-proof indentation, and the indentation diameter is the 6-15 millimeter, and indentation thickness is the 0.03-0.1 millimeter.
Described three-level protective lithium ion battery cover is characterized in: explosion-proof diaphragm and orifice plate are that laser spot welding assembles structure, and the laser solder joint has 2-10, and the solder joint area is the 0.5-3 square millimeter.
Advantage and good effect that the present invention has are:
Three-level protective lithium ion battery cover is owing to adopted brand-new technology scheme of the present invention, and compared with prior art, the present invention adopts lithium ion battery cover three-level protective structure.Three grades of explosion-proof modes are respectively: on the explosion-proof diaphragm circular score line is arranged; Explosion-proof diaphragm and orifice plate are that laser spot welding assembles structure; The PTC thermistor plate that assembles between top cover and explosion-proof diaphragm.Simultaneously sealing ring and the orifice plate insulation cushion of the application's block are isolating construction, leave deformation space, have guaranteed that block puts into battery case and seal afterwards that orifice plate does not produce distortion, come off etc.Therefore, three-level protective lithium ion battery cover of the present invention have simple in structure, easy to assembly, stable and reliable for performance, explosion-proof performance is excellent, safe class is high, long service life, advantage such as applied widely.
Description of drawings
Fig. 1 is a three-level protective lithium ion battery cover structural representation of the present invention.
Among the figure, 1. top cover, 2.PTC thermistor plate, 3. explosion-proof diaphragm, 4. sealing ring, 5. orifice plate, 6. laser solder joint, 7. orifice plate insulation cushion, 8. venthole, 9. lug weld zone, 10. indentation, 11. battery cases.
Embodiment
For further understanding summary of the invention of the present invention, characteristics and effect, exemplify following examples now, and conjunction with figs. is described in detail as follows:
A kind of three-level protective lithium ion battery cover comprises top cover, explosion-proof diaphragm, orifice plate, and top cover and explosion-proof diaphragm and orifice plate are combined successively; its explosion-proof diaphragm and orifice plate weld together; explosion-proof diaphragm has circular score line, and the indentation diameter is 8 millimeters, and indentation thickness is 0.08 millimeter.PTC thermistor plate is housed between top cover and explosion-proof diaphragm, and PTC thermistor plate is circular, and two surfaces are the pure nickel paper tinsel, and the centre is a thermistor, and gross thickness is 1.3 millimeters.Explosion-proof diaphragm and orifice plate are that laser spot welding assembles structure, and the laser solder joint has 4, and the solder joint area is 2 square millimeters.Be provided with sealing ring between top cover, PTC thermistor plate and explosion-proof diaphragm and battery case, sealing ring and orifice plate insulation cushion are the separate type assembly structure.Between sealing ring and orifice plate insulation cushion the sealing ring deformation space is arranged, sealing ring is a circular groove formula structure, and thickness is 2 millimeters, and the orifice plate insulation cushion is a butterfly structure, and thickness is 0.5 millimeter.
The concrete mounting structure and the characteristic thereof of present embodiment:
As shown in Figure 1, the three-level protective lithium ion battery cover mounting structure comprises: top cover 1, PTC thermistor plate 2, explosion-proof diaphragm 3, sealing ring 4, orifice plate 5, laser solder joint 6, orifice plate insulation cushion 7, venthole 8, lug weld zone 9, orifice plate indentation 10, battery case 11.Top cover 1, PTC thermistor plate 2, explosion-proof diaphragm 3 and orifice plate 5 are assembled together successively from top to bottom, and 5 of explosion-proof diaphragm 3 and orifice plates are equipped with butterfly orifice plate insulation cushion 7, have spill sealing ring 4 and battery case 11 sealings to be assembled together outward.7 of sealing ring 4 and orifice plate insulation cushions are isolating construction, leave deformation space.Deformation technology hidden danger and safety problem that former conjoined structure brings have been changed.
Present embodiment lithium ion battery cover three-level protective is respectively: the one, and, on the explosion-proof diaphragm circular score line is arranged.This indentation can pop under specified gas pressure value, has improved the safety anti-explosive function of electrokinetic cell.The 2nd,, explosion-proof diaphragm and orifice plate are that laser spot welding assembles structure.When explosion-proof diaphragm explosion distortion, break solder joint, cause and open circuit, can not occur that orifice plate and explosion-proof diaphragm are torn and the situation generation of not cutting off the power supply.The 3rd,, the PTC thermistor plate that assembles between top cover and explosion-proof diaphragm.Its two surface is a nickel foil, and the centre is the thermistor macromolecular material.During operate as normal, very little as conductor resistance, when occurrence temperature raise variation, its resistance value strengthened with temperature increase, finally becomes insulator, cut off battery supply, effectively played explosion-proof effect.Sealing ring 4 and 7 of the orifice plate insulation cushions of the application block are isolating construction, leave deformation space, have guaranteed that cover plate puts into battery case and seal afterwards that orifice plate does not produce distortion, come off etc.Safety and operation technique problem that the conjoined structure distortion causes have effectively been prevented.Therefore, three-level protective structure innovation type project organization of the present invention has improved the performance and the explosive-proof grade of lithium ion battery greatly.
That three-level protective lithium ion battery cover of the present invention has is simple in structure, easy to assembly, stable performance, explosion-proof performance is excellent, safe class is high, long service life, the advantage such as applied widely.
Claims (6)
1. three-level protective lithium ion battery cover; comprise top cover, explosion-proof diaphragm, orifice plate; top cover and explosion-proof diaphragm and orifice plate are combined successively; it is characterized in that: explosion-proof diaphragm and orifice plate weld together; on the explosion-proof diaphragm circular score line is arranged; PTC thermistor plate is housed between top cover and explosion-proof diaphragm, is provided with sealing ring between top cover, PTC thermistor plate and explosion-proof diaphragm and battery case, sealing ring and orifice plate insulation cushion are the separate type assembly structure.
2. three-level protective lithium ion battery cover according to claim 1; it is characterized in that: between sealing ring and orifice plate insulation cushion the sealing ring deformation space is arranged, sealing ring is a circular groove formula structure, and thickness is the 1-5 millimeter; the orifice plate insulation cushion is a butterfly structure, and thickness is the 0.3-1.0 millimeter.
3. three-level protective lithium ion battery cover according to claim 1 and 2 is characterized in that: PTC thermistor plate is for circular, and thickness is the 0.2-0.5 millimeter.
4. three-level protective lithium ion battery cover according to claim 3 is characterized in that: PTC thermistor plate two surfaces are the pure nickel paper tinsel, and the centre is the thermistor macromolecular material.
5. three-level protective lithium ion battery cover according to claim 1 is characterized in that: explosion-proof diaphragm is provided with circular explosion-proof indentation, and the indentation diameter is the 6-15 millimeter, and indentation thickness is the 0.03-0.1 millimeter.
6. three-level protective lithium ion battery cover according to claim 1 or 5, it is characterized in that: explosion-proof diaphragm and orifice plate are that laser spot welding assembles structure, and the laser solder joint has 2-10, and the solder joint area is the 0.5-3 square millimeter.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010102483501A CN101916832A (en) | 2010-08-09 | 2010-08-09 | Three-level protective lithium ion battery cover |
| PCT/CN2010/076120 WO2012019371A1 (en) | 2010-08-09 | 2010-08-18 | Ternary protection lithium ion battery cap |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010102483501A CN101916832A (en) | 2010-08-09 | 2010-08-09 | Three-level protective lithium ion battery cover |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101916832A true CN101916832A (en) | 2010-12-15 |
Family
ID=43324277
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010102483501A Pending CN101916832A (en) | 2010-08-09 | 2010-08-09 | Three-level protective lithium ion battery cover |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN101916832A (en) |
| WO (1) | WO2012019371A1 (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106784428A (en) * | 2017-01-17 | 2017-05-31 | 无锡市金杨新型电源有限公司 | A kind of anti-explosion battery shell |
| CN110253142A (en) * | 2019-07-03 | 2019-09-20 | 伊欧激光科技（苏州）有限公司 | The automatic assembling device of cylindrical lithium ion cell cap |
| CN111937177A (en) * | 2018-04-06 | 2020-11-13 | 松下电器产业株式会社 | Battery with a battery cell |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP7249286B2 (en) | 2017-03-30 | 2023-03-30 | ドナルドソン カンパニー，インコーポレイティド | Vent with relief valve |
| US10950912B2 (en) | 2017-06-14 | 2021-03-16 | Milwaukee Electric Tool Corporation | Arrangements for inhibiting intrusion into battery pack electrical components |
| CN107359296B (en) * | 2017-07-24 | 2023-11-10 | 东营悦泰技术服务有限公司 | Lithium battery module and pressure relief device thereof |
| CN107507937B (en) * | 2017-07-24 | 2023-04-07 | 东营悦泰技术服务有限公司 | Thermal-insulated fire prevention explosion-proof group battery |
| CN108448014A (en) * | 2018-03-07 | 2018-08-24 | 江苏镭腾能源科技有限公司 | A kind of lithium battery cap component |
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| CN1457542A (en) * | 2001-02-06 | 2003-11-19 | 索尼化学株式会社 | Protection circuit-equipped secondary battery |
| CN201262961Y (en) * | 2008-08-26 | 2009-06-24 | 常州剑湖金城车辆设备有限公司 | Lithium battery anode cover |
| CN201478363U (en) * | 2009-06-18 | 2010-05-19 | 常州今创能源科技有限公司 | Lithium battery safety valve |
| CN201536120U (en) * | 2009-09-25 | 2010-07-28 | 天津佰特瑞电子有限公司 | Explosion-proof nut cap of lithium ion electrokinetic cell |
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| JP4580699B2 (en) * | 2004-06-25 | 2010-11-17 | 株式会社東芝 | Nonaqueous electrolyte secondary battery |
| CN201233919Y (en) * | 2008-07-29 | 2009-05-06 | 天津佰特瑞电子有限公司 | Lithium ionic cell covering cap device |
| CN201259898Y (en) * | 2008-07-29 | 2009-06-17 | 天津佰特瑞电子有限公司 | Lithium ionic cell cap combining apparatus |
| CN201435413Y (en) * | 2009-01-23 | 2010-03-31 | 东莞新能源科技有限公司 | Lithium ion battery combined nut cap |
| CN201417798Y (en) * | 2009-06-18 | 2010-03-03 | 常州今创能源科技有限公司 | Lithium battery safety valve |
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2010
- 2010-08-09 CN CN2010102483501A patent/CN101916832A/en active Pending
- 2010-08-18 WO PCT/CN2010/076120 patent/WO2012019371A1/en active Application Filing
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1457542A (en) * | 2001-02-06 | 2003-11-19 | 索尼化学株式会社 | Protection circuit-equipped secondary battery |
| CN201262961Y (en) * | 2008-08-26 | 2009-06-24 | 常州剑湖金城车辆设备有限公司 | Lithium battery anode cover |
| CN201478363U (en) * | 2009-06-18 | 2010-05-19 | 常州今创能源科技有限公司 | Lithium battery safety valve |
| CN201536120U (en) * | 2009-09-25 | 2010-07-28 | 天津佰特瑞电子有限公司 | Explosion-proof nut cap of lithium ion electrokinetic cell |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106784428A (en) * | 2017-01-17 | 2017-05-31 | 无锡市金杨新型电源有限公司 | A kind of anti-explosion battery shell |
| CN111937177A (en) * | 2018-04-06 | 2020-11-13 | 松下电器产业株式会社 | Battery with a battery cell |
| CN111937177B (en) * | 2018-04-06 | 2024-03-08 | 松下控股株式会社 | Battery cell |
| CN110253142A (en) * | 2019-07-03 | 2019-09-20 | 伊欧激光科技（苏州）有限公司 | The automatic assembling device of cylindrical lithium ion cell cap |
Also Published As
| Publication number | Publication date |
|---|---|
| WO2012019371A1 (en) | 2012-02-16 |
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Application publication date: 20101215 |