CN1881651A - Lithium ion battery cover plate assembly, battery casing and battery - Google Patents
Lithium ion battery cover plate assembly, battery casing and battery Download PDFInfo
- Publication number
- CN1881651A CN1881651A CNA2005100211361A CN200510021136A CN1881651A CN 1881651 A CN1881651 A CN 1881651A CN A2005100211361 A CNA2005100211361 A CN A2005100211361A CN 200510021136 A CN200510021136 A CN 200510021136A CN 1881651 A CN1881651 A CN 1881651A
- Authority
- CN
- China
- Prior art keywords
- lithium ion
- sealing element
- elastic sealing
- ion battery
- cover board
- 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.)
- Granted
Links
- HBBGRARXTFLTSG-UHFFFAOYSA-N Lithium ion Chemical compound [Li+] HBBGRARXTFLTSG-UHFFFAOYSA-N 0.000 title claims abstract description 32
- 229910001416 lithium ion Inorganic materials 0.000 title claims abstract description 32
- 238000007789 sealing Methods 0.000 claims abstract description 63
- 238000002347 injection Methods 0.000 claims description 40
- 239000007924 injection Substances 0.000 claims description 40
- 239000007788 liquid Substances 0.000 claims description 38
- 239000011796 hollow space material Substances 0.000 claims description 8
- 239000000463 material Substances 0.000 claims description 5
- 239000012530 fluid Substances 0.000 claims description 2
- 230000000712 assembly Effects 0.000 claims 1
- 238000000429 assembly Methods 0.000 claims 1
- 230000000694 effects Effects 0.000 abstract description 6
- 229910000831 Steel Inorganic materials 0.000 description 7
- 239000010959 steel Substances 0.000 description 7
- 239000003792 electrolyte Substances 0.000 description 3
- 238000004080 punching Methods 0.000 description 3
- 230000009977 dual effect Effects 0.000 description 2
- 238000005538 encapsulation Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000007704 transition Effects 0.000 description 2
- 238000003466 welding Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000004804 winding Methods 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
- H01M50/10—Primary casings; Jackets or wrappings
- 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
- H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
- H01M50/60—Arrangements or processes for filling or topping-up with liquids; Arrangements or processes for draining liquids from casings
- H01M50/609—Arrangements or processes for filling with liquid, e.g. electrolytes
- H01M50/627—Filling ports
- H01M50/636—Closing or sealing filling ports, e.g. using lids
-
- 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)
- Filling, Topping-Up Batteries (AREA)
- Sealing Battery Cases Or Jackets (AREA)
Abstract
The invention relates to a lithium ion battery cover plate, which comprises a cover body, an elastic sealing element and a fixing element, wherein said cover body is arranged with ejection hole; the elastic sealing element is between the wall of ejection hole and the fixing element; the fixing element clamps the elastic sealing element inside the ejection hole. The inventive also discloses a battery frame and lithium ion battery with said battery cover plate. The invention has the advantages that: it uses elastic sealing element and fixing element to seal the ejection hole, to arrange the elastic sealing element between the ejection hole and the fixing element to use its elasticity and deformation to reduce the pressure needed by seal and realize better seal effect.
Description
[technical field]
The present invention relates to the lithium ion battery encapsulation technology, be specifically related to lithium ion battery cover board assembly, battery case and battery.
[background technology]
Lithium ion battery is a kind of big capacity, high-power battery, and it is mainly used on the mini-plant, particularly mobile phone.Lithium ion battery is generally formed by battery cover board assembly, battery can, electrolyte and by the battery roll core that positive and negative plate and diaphragm paper are wound into.Carry out the encapsulation of lithium ion battery in the prior art and adopt such step usually: in the battery can of earlier battery roll core of winding being packed into; Then positive/negative plate is connected the welding of leader tape and cover plate assembly; Again cover plate is sealed in the peristome of battery can by the laser welding mode, has so just formed a container that battery roll core is housed; Inject the electrolyte into internal tank by the liquid injection hole on the cover plate again, at last liquid injection hole is sealed.At present, the sealing of liquid injection hole realizes with the liquid injection hole interference fit by steel ball being poured in the liquid injection hole.
Because steel ball is solid rigid element, again with the liquid injection hole interference fit, when just making stamped steel ball sealing mouth, this needs bigger pressure, might cause the battery container distortion; In addition steel ball embed liquid injection hole degree of depth precision prescribed than higher, and wayward deeply when shallow during the degree of depth of steel ball during punching press, cause poor sealing easily and leakage.
[summary of the invention]
Purpose of the present invention provides a kind of required pressure that seals less, lithium ion battery cover board assembly, battery case and the battery of good sealing effect.
In order to achieve the above object, the technical solution used in the present invention is: a kind of lithium ion battery cover board assembly, comprise lid, elastic sealing element and securing member, described lid is provided with liquid injection hole, described elastic sealing element is between fluid injection hole wall and securing member, and described securing member is clamped on elastic sealing element in the liquid injection hole.
Preferably, described elastic sealing element has the hollow head of top closure, and its outer wall and liquid injection hole inwall fit tightly; Described securing member has the support portion, and it is arranged in the hollow space of described elastic sealing element, and with this part interference fit.
Preferably, described elastic sealing element adopts macromolecular material.
Further preferably, described support portion is the hollow shape of top closure, and the external diameter of its hollow space is greater than the internal diameter of the hollow space of described elastic sealing element.
Further preferably, described liquid injection hole is the countersunk head pass, comprises the straight hole and the superposed countersunk head that are positioned at the bottom.
More preferably, worn-out mouthful of end of described elastic sealing element also has outward extending rib, and described rib is arranged in described countersunk head.
More preferably, the support portion tail end of described securing member also has outward extending tight lock part, and tight lock part outer diameter is greater than the countersunk head internal diameter, and described tight lock part is clamped in the countersunk head.
More preferably, described tight lock part outer is dentation.
For purpose of the present invention also provides, a kind of lithium ion battery shell comprises battery can and the battery cover board assembly that seals its opening, and described battery cover board assembly has said structure.
And a kind of lithium ion battery with above-mentioned battery case.
Adopt technique scheme, in conjunction with the following embodiment that will describe in detail, beneficial technical effects of the present invention is: 1) adopt to comprise that the black box of elastic sealing element and securing member carries out the sealing of liquid injection hole, elastic sealing element is arranged between liquid injection hole and the securing member, utilize its elasticity and deformation, not only can lower and seal required pressure and can reach better sealing effectiveness.2) elastic sealing element adopts the hollow shape of top closure, is convenient to securing member poured in the hollow part tighten, and a punching press can be finished sealing, and is convenient efficient.3) elastic sealing element adopts macromolecular material, can have better elastic and chemical stability, guarantees can not produce the phenomenon of leakage because of being corroded by electrolyte.4) support portion of securing member adopts the hollow shape of top closure lower to the needs of stamping press than the entity sealing equally, and hollow structure can be given full play to the pressure that interference fit produces, and more helps being pressed in the liquid injection hole uniformly elastic sealing element is abundant and stressed.5) liquid injection hole adopts counter sink, and the depression at its countersunk head position makes that black box is difficult for being disturbed by miscellaneous part in the follow-up flow process of battery assembling, guarantee the reliability of sealing.6) opening end at elastic sealing element is provided with outward extending rib, and external opening that can the adequate closure liquid injection hole helps improving obturation effect.7) at the support portion of securing member tail end outward extending tight lock part is set equally, then can together play the effect of dual chucking with its support portion, guarantee fitting tightly of seal and liquid injection hole, particularly adopt the situation of hollow structure for the support portion, can increase the outside elastic force in support portion in the time of the tight lock part chucking, this elastic force can effectively strengthen the sealing ability of seal perpendicular to the binding face of seal and liquid injection hole.8) adopt dentation tight lock part outer, the vertical friction when helping reducing tight lock part and snapping in countersunk head also helps it simultaneously and produces suitable deformation.
Also the present invention is described in further detail in conjunction with the accompanying drawings below by embodiment.
[description of drawings]
Fig. 1 is a kind of lithium ion battery cover board assembly.
Fig. 2 is the securing member stereogram.
Fig. 3 is that fastener shaft is to cutaway view.
Fig. 4 is the elastic sealing element stereogram.
Fig. 5 is the axial cutaway view of elastic sealing element.
Fig. 6 is the axial cutaway view of liquid injection hole.
Fig. 7 is that securing member, elastic sealing element are assemblied in the axial cutaway view in the liquid injection hole.
Fig. 8 is a rectangular lithium ion battery housing schematic diagram.
Fig. 9 is that another kind of fastener shaft is to cutaway view.
Figure 10 is the axial cutaway view of another kind of elastic sealing element.
[embodiment]
Embodiment one, a kind of lithium ion battery cover board assembly, in conjunction with Fig. 1～Fig. 7, comprise lid and black box, lid comprises cover plate 4 and pole plate 3, black box comprises elastic sealing element 2 and securing member 1, cover plate 4 and pole plate 3 are provided with liquid injection hole 7, and elastic sealing element 2 is between liquid injection hole 7 inwalls and securing member 1, and securing member 1 is clamped on elastic sealing element 2 in the liquid injection hole 7.
Liquid injection hole 7 has structure shown in Figure 6, is the countersunk head pass, comprises the straight hole 32 and the superposed countersunk head 31 that are positioned at the bottom.The internal diameter of straight hole 32 is g, and the internal diameter of countersunk head 31 is a.
Securing member 1 has Fig. 2 and structure shown in Figure 3, comprises support portion 13 and tight lock part 11, and support portion 13 is the hollow shape of top closure, and tight lock part 11 outers have tooth 12.The external diameter of support portion 13 is b, greater than the inner diameter d of cavity 22; Tight lock part 11 outer diameters are c, greater than the internal diameter a of countersunk head 31.
Securing member 1 is clamped on elastic sealing element 2 in the liquid injection hole 7 according to structure shown in Figure 7: the hollow head 23 of elastic sealing element 2 and straight hole 32 interference fit of liquid injection hole 7; The support portion 13 of securing member 1 and the cavity 22 inwall interference fit of elastic sealing element 2; The tight lock part 11 and countersunk head 31 interference fit of securing member 1.
In the foregoing description, the countersunk head liquid injection hole also can adopt the countersunk head shape that has the inclined plane, and is just passable as long as liquid injection hole has the depression that can hold securing member and elastic sealing element extension.
Elastic sealing element can adopt macromolecular materials such as PP, PE, and it mainly acts on is by producing elasticity/plastic deformation, reaching good sealing effectiveness.The size of elastic sealing element itself can reach the dual interference fit of elastic sealing element and liquid injection hole, elastic sealing element and securing member greater than liquid injection hole, strengthens sealing effectiveness; Certainly, also can be to only depend on the snap action of securing member that elastic sealing element is fixed in the liquid injection hole, and need not the elastic sealing element size greater than liquid injection hole.The shape of elastic sealing element also is not limited to and provides in the foregoing description, and its hollow space can be hemisphere, and the extension of rib also can have the camber transition, as shown in figure 10.The setting of rib is the convenience of locating during for punching press, and improves sealing effectiveness, as for the length of rib, even whether have rib and can come as required fully to determine, and not realization essential condition of the present invention.
Securing member preferably adopts steel etc. to have the material of good hardness and rigidity, it mainly acts on is the chucking elastic sealing element, therefore, just adopts existing steel ball, also be fine, but adopt the hollow structure that provides in the present embodiment can have littler stamping press to require and better effect.Similar with elastic sealing element, its shape also is not limited to and provides in the foregoing description, and hollow space can be hemisphere, and the extension of rib also can have the camber transition, as shown in Figure 9.The tight lock part of its extension makes the support portion produce bigger extruding owing to can be clamped in the countersunk head of liquid injection hole, so that better sealing effectiveness to be provided, thereby is particularly preferred.
Embodiment two, a kind of lithium ion battery shell in conjunction with Fig. 8, comprise the battery cover board assembly of battery can 5 and its opening of sealing, and described battery cover board assembly has structure described in the embodiment one.
Embodiment three, a kind of lithium ion battery comprise lithium ion battery shell and the battery battery core that is encapsulated in wherein.Described battery case has structure described in the embodiment two.
Should be understood that, described lithium ion battery cover board assembly of the present invention pole plate, cover plate can also be designed to other shapes, for example circular, it is cylindrical etc. that corresponding lithium-ion battery shell and lithium ion battery can be designed to.Simultaneously also can be designed to other end diameter big for liquid injection hole, and the little shape of an end diameter is as being designed to bellmouth with the straight hole described in the embodiment.Above-mentioned description at preferred embodiment only provides for a better understanding of the present invention, can not therefore be interpreted as the restriction to scope of patent protection of the present invention, and its scope of patent protection should be as the criterion with claims.
Claims (10)
1, a kind of lithium ion battery cover board assembly, comprise lid, described lid is provided with liquid injection hole, it is characterized in that: also comprise elastic sealing element and securing member, described elastic sealing element is between fluid injection hole wall and securing member, and described securing member is clamped on elastic sealing element in the liquid injection hole.
2, lithium ion battery cover board assembly according to claim 1, it is characterized in that: described elastic sealing element has the hollow head of top closure, and its outer wall and liquid injection hole inwall fit tightly; Described securing member has the support portion, and it is arranged in the hollow space of described elastic sealing element, and with this part interference fit.
3, according to the described lithium ion battery cover board assembly of claim 2, it is characterized in that: described support portion is the hollow shape of top closure, and the external diameter of its hollow space is greater than the internal diameter of the hollow space of described elastic sealing element.
4, lithium ion battery cover board assembly according to claim 1 is characterized in that: described elastic sealing element adopts macromolecular material.
5, according to claim 2 or 3 described lithium ion battery cover board assemblies, it is characterized in that: described liquid injection hole is the countersunk head pass, comprises the straight hole and the superposed countersunk head that are positioned at the bottom.
6, lithium ion battery cover board assembly according to claim 5, it is characterized in that: the opening end of described elastic sealing element also has outward extending rib, and described rib is arranged in described countersunk head.
7, lithium ion battery cover board assembly according to claim 6 is characterized in that: the support portion tail end of described securing member also has outward extending tight lock part, and tight lock part outer diameter is greater than the countersunk head internal diameter, and described tight lock part is clamped in the countersunk head.
8, lithium ion battery cover board assembly according to claim 7 is characterized in that: described tight lock part outer is dentation.
9, a kind of lithium ion battery shell comprises battery can and the battery cover board assembly that seals its opening, and it is characterized in that: described battery cover board assembly has above-mentioned any described structure of claim.
10, a kind of lithium ion battery with the described battery case of claim 9.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2005100211361A CN100514709C (en) | 2005-06-17 | 2005-06-17 | Lithium ion battery cover plate assembly, battery casing and battery |
| PCT/CN2006/000929 WO2006133617A1 (en) | 2005-06-17 | 2006-05-09 | Cover plate assembly for lithium ion battery, battery case and battery using the same |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2005100211361A CN100514709C (en) | 2005-06-17 | 2005-06-17 | Lithium ion battery cover plate assembly, battery casing and battery |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1881651A true CN1881651A (en) | 2006-12-20 |
| CN100514709C CN100514709C (en) | 2009-07-15 |
Family
ID=37519730
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2005100211361A Expired - Fee Related CN100514709C (en) | 2005-06-17 | 2005-06-17 | Lithium ion battery cover plate assembly, battery casing and battery |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN100514709C (en) |
| WO (1) | WO2006133617A1 (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US8389154B2 (en) | 2005-09-02 | 2013-03-05 | A123 Systems, Inc. | Battery cell design and method of its construction |
| CN101593824B (en) * | 2008-05-28 | 2013-07-31 | 深圳市比克电池有限公司 | Battery sealing plate and battery |
| CN103855334A (en) * | 2012-12-04 | 2014-06-11 | 罗伯特·博世有限公司 | Battery cell with closure of filling opening improved |
| TWI458156B (en) * | 2011-12-27 | 2014-10-21 | Dongguan Nvt Technology Co Ltd | Lithium ion battery and preparation method thereof |
| JPWO2014068641A1 (en) * | 2012-10-29 | 2016-09-08 | 日立オートモティブシステムズ株式会社 | Rectangular storage element and method for manufacturing the same |
| CN106450070A (en) * | 2016-12-19 | 2017-02-22 | 宁德时代新能源科技股份有限公司 | Annotate liquid hole seal assembly and contain power battery of this subassembly |
| CN107403886A (en) * | 2016-05-19 | 2017-11-28 | 宁德时代新能源科技股份有限公司 | Battery top cover |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102012222203B4 (en) | 2012-12-04 | 2021-09-23 | Robert Bosch Gmbh | Battery cell with improved closure of a filling opening |
| CN106410070A (en) * | 2016-11-28 | 2017-02-15 | 东莞市振华新能源科技有限公司 | Injection hole structure capable of improving thermal shock test of square lithium ion battery |
| CN113983932B (en) * | 2021-11-03 | 2023-08-08 | 合肥国轩高科动力能源有限公司 | Cylindrical battery steel ball deflection detection method and system |
| CN115472974A (en) * | 2022-09-14 | 2022-12-13 | 阜阳海钠科技有限责任公司 | Battery sealing safety device, lithium sodium ion battery and secondary utilization method |
| CN116581497B (en) * | 2023-07-11 | 2023-12-29 | 深圳市誉辰智能装备股份有限公司 | Stamping mechanism for steel ball punching of battery liquid injection hole |
Family Cites Families (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3518962B2 (en) * | 1996-11-11 | 2004-04-12 | 株式会社神戸製鋼所 | Aluminum electrode pillar for lithium ion battery |
| JPH11176418A (en) * | 1997-12-10 | 1999-07-02 | Mitsubishi Cable Ind Ltd | Sealed battery |
| US6190798B1 (en) * | 1998-01-09 | 2001-02-20 | Kabushiki Kaisha Toshiba | Sealed battery and method of manufacturing the same |
| JP2000082451A (en) * | 1998-09-07 | 2000-03-21 | Hitachi Ltd | Nonaqueous electrolyte secondary battery |
| JP3464612B2 (en) * | 1998-10-13 | 2003-11-10 | 日本碍子株式会社 | Manufacturing method of lithium secondary battery |
| JP3675673B2 (en) * | 1999-07-06 | 2005-07-27 | 株式会社豊田中央研究所 | Battery with built-in electrolyte |
| CN2511007Y (en) * | 2001-12-10 | 2002-09-11 | 张兆谟 | Cylindrical lithium ion cell core |
| JP2004119329A (en) * | 2002-09-30 | 2004-04-15 | Sanyo Electric Co Ltd | Secondary battery |
| CN2612077Y (en) * | 2003-04-16 | 2004-04-14 | 王文林 | Aluminum cover for Li-ion battery |
-
2005
- 2005-06-17 CN CNB2005100211361A patent/CN100514709C/en not_active Expired - Fee Related
-
2006
- 2006-05-09 WO PCT/CN2006/000929 patent/WO2006133617A1/en active Application Filing
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US8389154B2 (en) | 2005-09-02 | 2013-03-05 | A123 Systems, Inc. | Battery cell design and method of its construction |
| CN101593824B (en) * | 2008-05-28 | 2013-07-31 | 深圳市比克电池有限公司 | Battery sealing plate and battery |
| TWI458156B (en) * | 2011-12-27 | 2014-10-21 | Dongguan Nvt Technology Co Ltd | Lithium ion battery and preparation method thereof |
| JPWO2014068641A1 (en) * | 2012-10-29 | 2016-09-08 | 日立オートモティブシステムズ株式会社 | Rectangular storage element and method for manufacturing the same |
| CN103855334A (en) * | 2012-12-04 | 2014-06-11 | 罗伯特·博世有限公司 | Battery cell with closure of filling opening improved |
| CN107403886A (en) * | 2016-05-19 | 2017-11-28 | 宁德时代新能源科技股份有限公司 | Battery top cover |
| CN106450070A (en) * | 2016-12-19 | 2017-02-22 | 宁德时代新能源科技股份有限公司 | Annotate liquid hole seal assembly and contain power battery of this subassembly |
| CN106450070B (en) * | 2016-12-19 | 2019-02-05 | 宁德时代新能源科技股份有限公司 | Annotate liquid hole seal assembly and contain power battery of this subassembly |
Also Published As
| Publication number | Publication date |
|---|---|
| CN100514709C (en) | 2009-07-15 |
| WO2006133617A1 (en) | 2006-12-21 |
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