CN102024995A - Novel lithium ion power battery - Google Patents
Novel lithium ion power battery Download PDFInfo
- Publication number
- CN102024995A CN102024995A CN2009101793457A CN200910179345A CN102024995A CN 102024995 A CN102024995 A CN 102024995A CN 2009101793457 A CN2009101793457 A CN 2009101793457A CN 200910179345 A CN200910179345 A CN 200910179345A CN 102024995 A CN102024995 A CN 102024995A
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- CN
- China
- Prior art keywords
- shell
- monomer electricity
- monomeric
- electricity core
- coated
- 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.)
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- HBBGRARXTFLTSG-UHFFFAOYSA-N Lithium ion Chemical compound [Li+] HBBGRARXTFLTSG-UHFFFAOYSA-N 0.000 title claims abstract description 12
- 229910001416 lithium ion Inorganic materials 0.000 title claims abstract description 12
- 239000012528 membrane Substances 0.000 claims abstract description 22
- 239000003792 electrolyte Substances 0.000 claims abstract description 7
- 230000005611 electricity Effects 0.000 claims description 54
- 239000000178 monomer Substances 0.000 claims description 49
- 229920002521 macromolecule Polymers 0.000 claims description 14
- 229910052751 metal Inorganic materials 0.000 claims description 9
- 239000002184 metal Substances 0.000 claims description 9
- -1 polypropylene Polymers 0.000 claims description 7
- 239000011261 inert gas Substances 0.000 claims description 5
- 239000004743 Polypropylene Substances 0.000 claims description 4
- 239000012530 fluid Substances 0.000 claims description 4
- 229920001155 polypropylene Polymers 0.000 claims description 4
- 239000004698 Polyethylene Substances 0.000 claims description 3
- 229920000573 polyethylene Polymers 0.000 claims description 3
- 229910052782 aluminium Inorganic materials 0.000 abstract description 14
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 abstract description 14
- 239000004411 aluminium Substances 0.000 abstract description 5
- 230000007797 corrosion Effects 0.000 abstract description 5
- 238000005260 corrosion Methods 0.000 abstract description 5
- 230000002035 prolonged effect Effects 0.000 abstract description 2
- 239000002985 plastic film Substances 0.000 description 9
- 229920006255 plastic film Polymers 0.000 description 9
- 238000004519 manufacturing process Methods 0.000 description 6
- 238000000034 method Methods 0.000 description 5
- 238000003466 welding Methods 0.000 description 4
- 238000005538 encapsulation Methods 0.000 description 3
- 238000003475 lamination Methods 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 238000004804 winding Methods 0.000 description 2
- 230000032683 aging Effects 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 230000002950 deficient Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 206010016766 flatulence Diseases 0.000 description 1
- 238000010030 laminating Methods 0.000 description 1
- 238000011031 large-scale manufacturing process Methods 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 238000012856 packing Methods 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 238000005476 soldering Methods 0.000 description 1
Images
Classifications
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- 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
-
- 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
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
- Y02P70/50—Manufacturing or production processes characterised by the final manufactured product
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- Secondary Cells (AREA)
Abstract
The invention discloses a novel lithium ion power battery comprising a shell with a cavity and at least two monomeric electric cores, wherein a high-molecular waterproof membrane is respectively coated on the surface of each monomeric electric core, electrolyte is packaged in the monomeric electric core coated with the high-molecular waterproof membrane, and the monomeric electric cores coated with the high-molecular waterproof membranes are packaged in the cavity of the shell after being connected in series or in parallel. In the invention, since the surface of each monomeric electric core is coated with the high-molecular waterproof membrane, the problem of corrosion on an aluminium membrane of the lithium ion power battery, caused when scratch the surface of the aluminium membrane is scratched by electric core burrs or lugs, can be avoided, and the service life of the power battery is prolonged; and meanwhile, compared with other adopted insulating membranes, the high-molecular waterproof membranes arranged on the surfaces of the monomeric electric cores enable the packaged monomeric electric cores to occupy small space, thereby effectively reducing the volume of the whole battery.
Description
Technical field
The present invention relates to a kind of battery, relate in particular to a kind of lithium-ion-power cell.
Background technology
Lithium-ion-power cell is a kind of brand-new green energy resource, and wide application prospect is arranged.But big as the desired capacity of electrokinetic cell, this producer to the common low capacity of original production (non-power) lithium ion battery is a difficult problem.For example, high large scale production equipment (as large-sized winding apparatus or laminating equipment) drops into, and is difficult to accomplish scale production, and is difficult to guarantee the consistency of battery.
For the production equipment that utilizes existing common batteries is produced lithium-ion-power cell, people have proposed the structure (CN2724207) that a plurality of small size electricity of encapsulation core, each small size electricity core encapsulate with aluminum plastic film again in the housing of a lithium-ion-power cell, adopt this scheme, utilize existing common lithium ion battery to produce the problem of device fabrication power though solved, and because each small size electricity core all with the aluminum plastic film encapsulation, has solved the consistency problem of battery again.But, owing to adopt the structure of both sides with plastic film therebetween layer of aluminum film, electricity core burr or lug puncture the aluminum plastic film surface easily, and on the aluminium lamination of centre, form cut (miniature pit), these exposed pits are vulnerable to the corrosion of electrolyte and constitute both positive and negative polarity with electrolyte, form miniature primary cell, further accelerated corrosion.
For this reason, be necessary the lithium-ion-power cell of said structure is done further to improve.
Summary of the invention
The technical problem to be solved in the present invention remedies above-mentioned the deficiencies in the prior art exactly, and a kind of generation equipment that can utilize existing common lithium ion battery is provided, and has the good lithium-ion-power cell of Corrosion Protection again.
Technical problem of the present invention is solved by the following technical programs:
The new type lithium ion electrokinetic cell, comprise the shell with cavity, at least two monomer electricity cores, the surface of each monomer electricity core is coated with the macromolecule waterproof membrane respectively, electrolyte is encapsulated in the monomer electricity in-core that is coated with the macromolecule waterproof membrane, is encapsulated in the cavity of described shell after the parallel connection of described monomer electricity core.
Described monomer electricity core adopts winding-structure.
Described shell is a metal shell.
Described macromolecule waterproof membrane is polypropylene screen or polyethylene film.
Described cavity pocket of outer cover is built-in with inert gas or inert fluid.
Described monomer electricity core capacity is 2Ah～10Ah.
Described monomer electricity core capacity is 3Ah～6Ah.
Described shell is provided with explosion-protection equipment.
The present invention's technique effect compared with prior art is:
(1) the present invention has solved and has utilized existing common lithium ion battery to produce the problem of device fabrication power by at least two small size monomer electricity of encapsulation in the housing of lithium-ion-power cell core; (2), the surface of each monomer electricity core is coated with the macromolecule waterproof membrane respectively, can in time detect every indexs such as capacity of monomer electricity core, solved the consistency problem of battery; (3) adopt at monomer electricity wicking surface coated high molecular waterproof membrane material, electricity core burr or lug easily scratch the problem that corrosion is caused on the aluminum plastic film surface when having avoided adopting the aluminum plastic film material, have prolonged the useful life of electrokinetic cell; (3) the macromolecule waterproof membrane of monomer electricity wicking surface setting, with respect to other dielectric film that adopts, it is little to take up room after the monomer electricity core packing, has effectively reduced the volume of entire cell;
When monomer of the present invention electricity core adopts winding-structure, can make the monomer electricity core of suitable capacity earlier, avoid the pole piece of reeling long, reduce the coiling difficulty, the utilization of materials height.
When lithium-ion-power cell of the present invention adopted metal shell, cracky not in the punch forming process can effectively intercept steam, oxygen, avoids electric core flatulence; When using metal shell also can avoid using the aluminum plastic film shell, the easy layering of aluminum plastic film, the easy and metal negative pole short circuit of inner layer metal aluminium, the defective that causes aluminium lamination to destroy.
When filling inert gas or inert fluid in the battery cavity of the present invention,, also can protect monomer electricity core even the macromolecule waterproof membrane of monomer electricity wicking surface is aging damaged.
When monomer of the present invention electricity core capacity was elected 3Ah～6Ah as, monomer electricity core size, capacity or voltage were suitable, and the lug quantity of configuration is few, the rate that manufactures a finished product height.
The shell of battery of the present invention is provided with explosion-protection equipment, has further improved fail safe.
Description of drawings
Fig. 1 is a specific embodiment of the invention front view;
Fig. 2 is a specific embodiment of the invention front view;
Fig. 3 is the A-A view of Fig. 2.
Embodiment
Also in conjunction with the accompanying drawings the present invention is described in further details below by concrete execution mode.
As shown in Figure 1 to Figure 3, this routine lithium-ion-power cell comprises shell 11, at least two the monomer electricity cores 12 with cavity and is arranged on lug 13 on the monomer electricity core 12, lug 13 on the monomer electricity core 12 connects to form the lug bundle, and the lug bundle is fixed on the shell 11.Monomer electricity core 12 capacity or voltages by design are arranged on after the parallel connection in the cavity of shell 11.Monomer electricity core 12 surfaces are coated with the macromolecule waterproof membrane.In this example, monomer electricity core 12 surfaces are coated with polypropylene screen.In another embodiment, monomer electricity core 12 surfaces are coated with polyethylene film.
Can adopt welding, riveted joint or otherwise connection between the lug 13, such as ultrasonic bonding.The lug bundle is fixed on the top cover 112, specifically can use screw 14 or alternate manner to fix, and the lug bundle is drawn by pole 15.
Shell 11 is provided with explosion-protection equipment 16, and explosion-protection equipment 16 comprises rupture pressure disc, explosionproof hole etc.Explosionproof hole can be arranged on the top cover 112.
The lithium-ion-power cell manufacture method that this is routine may further comprise the steps:
Steps A: pole piece is made monomer electricity core, coat monomer electricity core, in the film formed cavity of macromolecule waterproof, inject electrolyte with the macromolecule waterproof membrane.
In this step, pole piece can adopt winding method to make monomer electricity core; Coat the macromolecule waterproof membrane of monomer electricity core, comprise polypropylene screen; Monomer electricity core capacity can be designed to 3Ah～6Ah, and being used for the making capacity is the lithium-ion-power cell of 20Ah～50Ah.The macromolecule waterproof membrane can leave opening after coating monomer electricity core, after waiting to inject electrolyte, opening is sealed again.
Step B: select the monomer of making through the steps A electricity core combo that consistency reaches pre-provisioning request, soldering polar ear with the in parallel or series connection of monomer electricity core of predetermined quantity, is inserted in the cavity of square shell, encapsulates after drawing lug, makes lithium-ion-power cell.
In this step, the shell of battery adopts metal shell, and cavity pocket of outer cover is built-in with inert gas or inert fluid.Select the monomer electricity core that consistency reaches pre-provisioning request, be meant the monomer electricity core of selecting high conformity; With the in parallel or series connection of monomer electricity core of predetermined quantity, insert square shell after the connections such as lug Shu Caiyong welding or riveted joint, the lug bundle is screwed on top cover, draw by pole, with top cover and housing seal, make this routine rectangular lithium ion electrokinetic cell.Predetermined quantity is meant the capacity of the rectangular lithium ion electrokinetic cell of making according to this method, the quantity of determined monomer electricity core.
In this example, before steps A, comprise the step that designs pole piece size and lug welding position according to the capacity of lithium-ion-power cell earlier.
Above content be in conjunction with concrete preferred implementation to further describing that the present invention did, can not assert that concrete enforcement of the present invention is confined to these explanations.For the general technical staff of the technical field of the invention, without departing from the inventive concept of the premise, can also make some simple deduction or replace, all should be considered as belonging to protection scope of the present invention.
Claims (8)
1. new type lithium ion electrokinetic cell, comprise the shell with cavity, at least two monomer electricity cores, described monomer electricity core is encapsulated in the cavity of described shell, it is characterized in that, the surface of each monomer electricity core is coated with the macromolecule waterproof membrane respectively, and electrolyte is encapsulated in the monomer electricity in-core that is coated with the macromolecule waterproof membrane.
2. battery according to claim 1 is characterized in that, described macromolecule waterproof membrane is polypropylene screen or polyethylene film.
3. battery according to claim 2 is characterized in that, described shell is a metal shell.
4. according to any described battery of claim 1-3, it is characterized in that, be filled with inert gas or inert fluid in the described cavity pocket of outer cover.
5. battery according to claim 4 is characterized in that, described monomer electricity core capacity is 2Ah～10Ah.
6. battery according to claim 5 is characterized in that, described monomer electricity core capacity is 3Ah～6Ah.
7. according to any described battery in the claim 1 to 3, it is characterized in that described shell is provided with explosion-protection equipment.
8. battery according to claim 4 is characterized in that described shell is provided with explosion-protection equipment.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009101793457A CN102024995A (en) | 2009-09-22 | 2009-09-22 | Novel lithium ion power battery |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009101793457A CN102024995A (en) | 2009-09-22 | 2009-09-22 | Novel lithium ion power battery |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102024995A true CN102024995A (en) | 2011-04-20 |
Family
ID=43866029
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009101793457A Pending CN102024995A (en) | 2009-09-22 | 2009-09-22 | Novel lithium ion power battery |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102024995A (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102394279A (en) * | 2011-09-26 | 2012-03-28 | 余建岳 | Charging explosion-proof temperature control lithium ion battery |
| CN102800889A (en) * | 2011-05-26 | 2012-11-28 | 比亚迪股份有限公司 | Lithium-ion battery and preparation method for same |
| CN103779513A (en) * | 2014-01-07 | 2014-05-07 | 同济大学 | Gas medium type sealed power storage battery module |
| CN105655651A (en) * | 2015-09-08 | 2016-06-08 | 江苏海四达电源股份有限公司 | Articulated reeling structure of U shaped busbar of lithium ion battery |
| CN110444700A (en) * | 2019-07-19 | 2019-11-12 | 江门吉锂能源有限公司 | A kind of pack case and its ultra-thin lithium cell of ultra-thin lithium cell |
| CN112768783A (en) * | 2021-01-07 | 2021-05-07 | Oppo广东移动通信有限公司 | Battery assembly, preparation method thereof and electronic equipment |
| WO2023155640A1 (en) * | 2022-02-21 | 2023-08-24 | 宁德时代新能源科技股份有限公司 | Battery cell, battery, electrical device, and manufacturing method for battery cell |
-
2009
- 2009-09-22 CN CN2009101793457A patent/CN102024995A/en active Pending
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102800889A (en) * | 2011-05-26 | 2012-11-28 | 比亚迪股份有限公司 | Lithium-ion battery and preparation method for same |
| CN102800889B (en) * | 2011-05-26 | 2015-06-24 | 比亚迪股份有限公司 | Lithium-ion battery and preparation method for same |
| CN102394279A (en) * | 2011-09-26 | 2012-03-28 | 余建岳 | Charging explosion-proof temperature control lithium ion battery |
| CN103779513A (en) * | 2014-01-07 | 2014-05-07 | 同济大学 | Gas medium type sealed power storage battery module |
| CN105655651A (en) * | 2015-09-08 | 2016-06-08 | 江苏海四达电源股份有限公司 | Articulated reeling structure of U shaped busbar of lithium ion battery |
| CN110444700A (en) * | 2019-07-19 | 2019-11-12 | 江门吉锂能源有限公司 | A kind of pack case and its ultra-thin lithium cell of ultra-thin lithium cell |
| CN112768783A (en) * | 2021-01-07 | 2021-05-07 | Oppo广东移动通信有限公司 | Battery assembly, preparation method thereof and electronic equipment |
| WO2023155640A1 (en) * | 2022-02-21 | 2023-08-24 | 宁德时代新能源科技股份有限公司 | Battery cell, battery, electrical device, and manufacturing method for battery cell |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20110420 |