CN104393334A - Lithium ion battery - Google Patents
Lithium ion battery Download PDFInfo
- Publication number
- CN104393334A CN104393334A CN201410747835.3A CN201410747835A CN104393334A CN 104393334 A CN104393334 A CN 104393334A CN 201410747835 A CN201410747835 A CN 201410747835A CN 104393334 A CN104393334 A CN 104393334A
- Authority
- CN
- China
- Prior art keywords
- battery
- lithium ion
- ion battery
- cover plate
- synthetic resin
- 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 17
- 229910001416 lithium ion Inorganic materials 0.000 title claims abstract description 17
- 239000007788 liquid Substances 0.000 claims abstract description 16
- 239000000463 material Substances 0.000 claims abstract description 16
- 238000007789 sealing Methods 0.000 claims abstract description 14
- 229920003002 synthetic resin Polymers 0.000 claims abstract description 11
- 239000000057 synthetic resin Substances 0.000 claims abstract description 11
- 239000003792 electrolyte Substances 0.000 claims abstract description 8
- 238000002347 injection Methods 0.000 claims description 15
- 239000007924 injection Substances 0.000 claims description 15
- 230000001681 protective effect Effects 0.000 claims description 7
- 238000001746 injection moulding Methods 0.000 claims description 2
- 230000015572 biosynthetic process Effects 0.000 claims 1
- 238000004519 manufacturing process Methods 0.000 abstract description 5
- 238000003466 welding Methods 0.000 description 8
- 239000004743 Polypropylene Substances 0.000 description 2
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 239000012530 fluid Substances 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- -1 polyethylene Polymers 0.000 description 2
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 description 1
- 239000004698 Polyethylene Substances 0.000 description 1
- 239000004721 Polyphenylene oxide Substances 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000002708 enhancing effect Effects 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 230000009931 harmful effect Effects 0.000 description 1
- 238000006713 insertion reaction Methods 0.000 description 1
- 229910052744 lithium Inorganic materials 0.000 description 1
- 239000007769 metal material Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 229920000573 polyethylene Polymers 0.000 description 1
- 229920006380 polyphenylene oxide Polymers 0.000 description 1
- 229920001155 polypropylene Polymers 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 229920001169 thermoplastic Polymers 0.000 description 1
- 239000004416 thermosoftening plastic Substances 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- 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
- H01M50/155—Lids or covers characterised by the material
-
- 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
-
- 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)
- Sealing Battery Cases Or Jackets (AREA)
- Filling, Topping-Up Batteries (AREA)
- Gas Exhaust Devices For Batteries (AREA)
Abstract
The invention discloses a lithium ion battery. The lithium ion battery disclosed by the invention comprises a battery cover plate, a casing and an electrolyte, wherein the battery cover plate is provided with a liquid filling hole, a sealing valve, a safety release valve, a positive terminal and a negative terminal, the liquid filling hole is internally provided with an internal thread which can be tightly screwed to an external thread of a sealing valve, for realizing sealing of the liquid filing hole, and the battery cover plate and the sealing valve are made of the same synthetic resin material. The invention provides the lithium ion battery; because the cover plate is made of a synthetic resin material, and the screw is made of the same material, in comparison with the condition that the cover plate and the screw are made of different materials, the tightness of the battery is better, the occurrence of short circuit can also be prevented so as to improve the market application prospect of the product of the battery producer, and therefore great significance in production practice is achieved.
Description
Technical field
The present invention relates to a kind of lithium ion battery, particularly relate to a kind of lithium rechargeable battery of synthetic resin shell.
Background technology
Along with the development of modern society and the enhancing of people's environmental consciousness, increasing equipment choice is using chargeable secondary cell as power supply, as mobile phone, notebook computer, electric tool and electric automobile etc., this is that the application & development of chargeable secondary cell provides wide space.
The preferred aluminum metal of lithium-ion-power cell manufacturing enterprise is as secondary cell housing, but at inside battery, electrolyte directly contacts with metal-back, the inefficacy that original passivating film corrodes housing and then causes battery can be destroyed under certain conditions, the topmost reason that corrosion reaction occurs is that lithium ion and aluminum metal there occurs insertion reaction, then causes the inefficacy of battery; Simultaneously in lithium ion battery manufacture process due to fluid injection after liquid injection port periphery can adhere to residual electrolyte, easily cause bad during Laser Welding and affect sealing property.
Summary of the invention
In view of this, the object of the invention is to the deficiency overcoming above-mentioned technology, and provide one that battery container can be avoided to corrode, the lithium ion battery simultaneously avoiding again cell sealing bad.
The present invention for achieving the above object, by the following technical solutions: comprise battery cover board, housing and electrolyte, described battery cover board is provided with liquid injection hole, seal valve, safety valve, positive terminal and negative terminal, be provided with internal thread in described liquid injection hole and tighten sealing by the externally threaded seal valve of band, described battery cover board and seal valve are that identical synthetic resin material is formed.
Battery cover board is combined with battery container by welding or welding, and safety valve is by by thinning for battery cover board certain thickness, and when cell internal pressure rises to the pressure of regulation, safety valve breaks and opens, and discharges cell internal pressure.
Described seal valve outer setting protective cover, protective cover is synthetic resin material.
Described synthetic resin material be there is the MODIFIED PP E of insulating properties, polyphenylene oxide, PFA, there is thermoplastic polyethylene, polypropylene or any one analog above-mentioned.
From above technical scheme provided by the invention, compared with prior art, the invention provides a kind of lithium ion battery, because cover plate adopts synthetic resin material, be identical material with screw, compared with under these material different situations, the sealing of battery can be better, also can be conducive to the market application foreground improving cell production companies product by preventing short circuit simultaneously, be of great practical significance.
Accompanying drawing explanation
Fig. 1 is the one package structual schematic diagram of a kind of lithium ion battery provided by the invention;
Fig. 2 be a kind of lithium ion battery provided by the invention complete structural representation;
In figure: 1, battery cover board main body, 2, battery container, 3, positive terminal, 4, negative terminal, 5, safety valve, 6, liquid injection hole, 7, seal valve, 8, protective cover.
Embodiment
In order to make those skilled in the art person understand the present invention program better, below in conjunction with drawings and embodiments, the present invention is described in further detail.
As: shown in 1-2, a kind of lithium ion battery, comprises battery cover board 1, housing 2 and electrolyte, and described battery cover board 1 is provided with liquid injection hole 6, seal valve 7, safety valve 5 and positive terminal 3 and negative terminal 4.Be provided with internal thread in liquid injection hole 6 and tighten sealing by being provided with externally threaded seal valve 7, battery cover board and seal valve are that identical synthetic resin material is formed, and sealing can be better, at seal valve 7 outside weldings or welding protective cover 8 for the protection of seal valve 7.
Battery cover board is combined with battery container by welding or welding, and safety valve is formed by by thinning for battery cover board certain thickness or formed by injection moulding, and when cell internal pressure rises to the pressure of regulation, safety valve breaks and opens, release cell internal pressure.
Embodiment 1:
First the battery container 2 injecting the electrolyte into vacuum state is inner, then under subnormal ambient, by establishing threaded seal valve 7 temporarily sealing liquid injection hole 6, (prior art uses rubber stopper seal to there is the situation of the low and easy displacement of air-tightness), then changing in advance of battery is carried out, after completing and changing in advance, seal valve 7 in liquid injection hole 6 is unloaded, to open liquid injection hole, discharge the gas that when changing in advance, battery container inside produces, and then by seal valve 7, liquid injection hole 6 is sealed, finally can realize multi-sealed effect at seal valve 7 outside weldings or welding protective cover 8 for the protection of seal valve 7, as adopted the cap of metal material, easily at liquid injection hole 6 periphery attachment electrolyte after fluid injection, Laser Welding easily causes harmful effect sealing property.
In sum, the invention provides a kind of lithium ion battery, because cover plate adopts synthetic resin material, material identical with during screw, compared with under these material different situations, the sealing of battery can be better, simultaneously also can preventing short circuit, be conducive to the market application foreground improving cell production companies product, be of great practical significance.
The above is only the preferred embodiment of the present invention; it should be pointed out that for those skilled in the art, under the premise without departing from the principles of the invention; can also make some improvements and modifications, these improvements and modifications also should be considered as protection scope of the present invention.
Claims (3)
1. a lithium ion battery, comprise battery cover board, housing and electrolyte, it is characterized in that, described battery cover board is provided with liquid injection hole, seal valve, safety valve, positive terminal and negative terminal, arrange internal thread in described liquid injection hole and tighten sealing by the externally threaded seal valve of band, described battery cover board and seal valve are that identical synthetic resin material is made.
2. a kind of lithium ion battery according to claim 1, is characterized in that: described safety valve is formed by thinning for battery cover board certain thickness or injection moulding formation.
3. a kind of lithium ion battery according to claim 1, is characterized in that: described seal valve outer setting protective cover, protective cover is synthetic resin material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410747835.3A CN104393334A (en) | 2014-12-10 | 2014-12-10 | Lithium ion battery |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410747835.3A CN104393334A (en) | 2014-12-10 | 2014-12-10 | Lithium ion battery |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104393334A true CN104393334A (en) | 2015-03-04 |
Family
ID=52611196
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410747835.3A Pending CN104393334A (en) | 2014-12-10 | 2014-12-10 | Lithium ion battery |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104393334A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106910847A (en) * | 2017-03-31 | 2017-06-30 | 天津中科先进技术研究院有限公司 | Novel lithium ion battery |
| CN107195855A (en) * | 2017-06-06 | 2017-09-22 | 深圳市陶金科技有限公司 | A kind of fluid injection seal assembly, power battery cover board component and electrokinetic cell |
| CN107946496A (en) * | 2017-12-14 | 2018-04-20 | 力神电池（苏州）有限公司 | A kind of new type lithium ion battery lid |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101183709A (en) * | 2007-12-14 | 2008-05-21 | 山东海霸通讯设备有限公司 | Lithium iron phosphate power cell square plastic casing |
| CN102347512A (en) * | 2011-09-27 | 2012-02-08 | 力神迈尔斯动力电池系统有限公司 | Large-capacity lithium ion battery |
| JP2014107204A (en) * | 2012-11-29 | 2014-06-09 | Toshiba Corp | Lithium ion battery |
-
2014
- 2014-12-10 CN CN201410747835.3A patent/CN104393334A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101183709A (en) * | 2007-12-14 | 2008-05-21 | 山东海霸通讯设备有限公司 | Lithium iron phosphate power cell square plastic casing |
| CN102347512A (en) * | 2011-09-27 | 2012-02-08 | 力神迈尔斯动力电池系统有限公司 | Large-capacity lithium ion battery |
| JP2014107204A (en) * | 2012-11-29 | 2014-06-09 | Toshiba Corp | Lithium ion battery |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106910847A (en) * | 2017-03-31 | 2017-06-30 | 天津中科先进技术研究院有限公司 | Novel lithium ion battery |
| CN107195855A (en) * | 2017-06-06 | 2017-09-22 | 深圳市陶金科技有限公司 | A kind of fluid injection seal assembly, power battery cover board component and electrokinetic cell |
| CN107946496A (en) * | 2017-12-14 | 2018-04-20 | 力神电池（苏州）有限公司 | A kind of new type lithium ion battery lid |
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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 | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20150304 |