CN103022571A - Stacked square power lithium-ion battery - Google Patents
Stacked square power lithium-ion battery Download PDFInfo
- Publication number
- CN103022571A CN103022571A CN2013100016611A CN201310001661A CN103022571A CN 103022571 A CN103022571 A CN 103022571A CN 2013100016611 A CN2013100016611 A CN 2013100016611A CN 201310001661 A CN201310001661 A CN 201310001661A CN 103022571 A CN103022571 A CN 103022571A
- Authority
- CN
- China
- Prior art keywords
- pole piece
- power lithium
- collector
- bed die
- square power
- 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
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
-
- 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
Abstract
The invention discloses a stacked square power lithium-ion battery. The stacked square power lithium-ion battery comprises pole cores, wherein the pole cores are mounted in a lower mold and provided with bulged current collectors, groove holes are formed in side faces of the lower mold, the current collectors penetrate through the groove holes, and an upper mold is mounted at the upper part of the lower mold; the two sides of cover plates are provided with pole tab connecting pieces, the pole tab connecting pieces are provided with small grooves, and the current collectors are led out of the small grooves of the pole tab connecting pieces; and the lower mold, the upper mold and the cover plates are mounted in a shell, and insulating gaskets are arranged on side faces of the shell. The stacked square power lithium-ion battery has the advantages of simplicity in manufacture, cost saving and space saving, and many previous technical problems are solved.
Description
Technical field
The present invention relates to a kind of lithium ion battery, relate in particular to a kind of stacked square power lithium ion cell.
Background technology
At present, general lithium ion battery structure has two kinds, make the volume core by the banded positive pole of membrane winding and negative pole and put into coiled lithium ion battery cylindrical or that square shell forms, folding by banded barrier film " Z " font, positive and negative plate is positioned over barrier film lap seam place and the Stacked lithium ion battery that forms successively.
Battery relatively less than normal for structure, that capacity is not high, pole piece generally adopt the takeup type structure, its manufacturing process relative simple, and production efficiency and qualification rate are higher, and automated production equipment is quite ripe.And large capacity and high power lithium ion cell be because of the larger area of dissipation of needs, higher energy force density, and stacked structure is generally adopted in lower internal resistance.Efficient was lower when stacked structure adopted manual lamination, and positive and negative plate easily misplaces, and automatic laminating machine is expensive and extremely immature at present, had directly affected production efficiency and the cost of Stackable batteries.
The every one deck pole piece of Stacked lithium ion battery all has lug, and the lug of identical polar often is stacked on same position and welds, to welding equipment require highly, the tab welding place occupies than large space.
In addition, at present the shell of large capacity Stacked lithium ion battery all adopts the mantle packing, and opposing hammering, shock and vibration ability are relatively poor, must increase shell protection during use, have increased the volume and weight of battery.
Summary of the invention
The purpose of this invention is to provide a kind of stacked square power lithium ion cell, weak point for above-mentioned stacked power lithium-ion battery existence, provide a kind of new laminating method and the method used mould, and the assembling mode of pole piece, production efficiency and the security performance of raising Stackable batteries.
For achieving the above object, the technical solution used in the present invention is:
A kind of stacked square power lithium ion cell comprises pole piece, it is characterized in that: pole piece is installed in the bed die, and pole piece is provided with the collector of protrusion, and the side of bed die is provided with slotted eye, and collector passes slotted eye, mold be installed in bed die above; The both sides of cover plate are provided with the lug brace, and the lug brace is provided with sulculus, and collector is drawn from the sulculus of lug brace; Described bed die, mold, cover plate are packed in the shell, and the side of shell is provided with insulation spacer.
According to described a kind of stacked square power lithium ion cell, it is characterized in that: the collector of described pole piece is located at a side.
According to described a kind of stacked square power lithium ion cell, it is characterized in that: the side of described bed die is provided with four slotted eyes, and a side is provided with two slotted eyes.
According to described a kind of stacked square power lithium ion cell, it is characterized in that: described pole piece is divided into both positive and negative, both positive and negative pole piece intersecting, and the outside of positive pole piece is surrounded by diaphragm bag.
According to described a kind of stacked square power lithium ion cell, it is characterized in that: the collector of described positive pole piece is in phase the same side, and the collector of described negative pole core is in phase the same side.
According to described a kind of stacked square power lithium ion cell, it is characterized in that: described collector is welded on the lug brace, and collector is welded on the diverse location of lug brace.
According to described a kind of stacked square power lithium ion cell, it is characterized in that: described bed die and mold are made by the material of electrolyte resistance corrosion.
Advantageous effect of the present invention is: (1) small investment does not need expensive laminating equipment; (2) production efficiency is high, and method of operation is easy, and the pole piece contraposition is accurate, and the employee does not need can operate through special training, is applicable to large-scale production.(3) shell adopts aluminum hull, has anti-explosion valve structure, and is safe and reliable.The present invention also has following usefulness except having above-mentioned advantage: (1) positive plate inserts in the diaphragm bag, and diaphragm bag has hot-forming position limiting sealed line, plays encapsulation and fixedly positive plate effect; (2) negative plate is consistent with the diaphragm bag width, can just be contained within the bed die width, and bed die plays the effect of location diaphragm bag and negative plate, and the positive and negative plate contraposition is accurate, and can not misplace.(3) pole piece fixing in mould after carrying and welding electrode ear, simple and convenient and can not damage pole piece.(4) pole piece enters shell together with mould, has overcome pole piece fluffy, enters shell and easily scratches, and is difficult for the shortcoming into shell.(5) the pole piece lug can be welded on a plurality of positions, and soldering reliability is high, and welding takes up room little.
Description of drawings
Fig. 1 is structural representation of the present invention.
In the accompanying drawing: 1, bed die; 2, mold; 3, pole piece; 4, collector; 5, slotted eye.
Embodiment
The invention will be further described below in conjunction with the drawings and specific embodiments:
The present invention as shown in Figure 1, a kind of stacked square power lithium ion cell comprises pole piece 3, it is characterized in that: pole piece 3 is installed in the bed die 1, and pole piece 3 is provided with the collector 4 of protrusion, and the side of bed die 1 is provided with slotted eye 5, collector 4 passes slotted eye 5, mold 2 be installed in bed die 1 above; The both sides of cover plate are provided with the lug brace, and the lug brace is provided with sulculus, and collector 4 is drawn from the sulculus of lug brace; Described bed die 1, mold 2, cover plate are packed in the shell, and the side of shell is provided with insulation spacer.According to described a kind of stacked square power lithium ion cell, it is characterized in that: the collector 4 of described pole piece 3 is located at a side.According to described a kind of stacked square power lithium ion cell, it is characterized in that: the side of described bed die 1 is provided with 5, one sides of four slotted eyes and is provided with two slotted eyes 5.According to described a kind of stacked square power lithium ion cell, it is characterized in that: described pole piece 3 is divided into both positive and negative, both positive and negative pole piece 3 intersectings, and the outside of positive pole piece 3 is surrounded by diaphragm bag.According to described a kind of stacked square power lithium ion cell, it is characterized in that: the collector 4 of described positive pole piece 3 is in phase the same side, and the collector 4 of described negative pole core 3 is in phase the same side.According to described a kind of stacked square power lithium ion cell, it is characterized in that: described collector 4 is welded on the lug brace, and collector 4 is welded on the diverse location of lug brace.According to described a kind of stacked square power lithium ion cell, it is characterized in that: described bed die 1 and mold 2 are made by the material of electrolyte resistance corrosion.
Structural principle of the present invention is as described below; lamination mould of the present invention is divided into mold 2 and bed die 1 two parts; bed die 1 plays the effect of location pole piece 3; mold 2 is buckled on the bed die 1; jointly play effect fixing and protection pole piece 3 with bed die 1; pole piece 3 circulates in mould, packs in the battery case together with mold 2 and bed die 1.Mold 2 is the material of electrolyte resistance corrosion with bed die 1 material.Positive pole piece of the present invention is coated in the aluminium foil matrix surface by active material and forms, and the venturi portion that the aluminium foil matrix extends out is the collector 4 of positive plate; The negative pole core is coated in the Copper Foil matrix surface by active material and forms, and the venturi portion that the Copper Foil matrix extends out is the collector 4 of negative plate.Barrier film of the present invention is packed, and wherein the potted line position is in the middle of negative pole core and the positive pole piece, and positive pole piece inserts in the diaphragm bag, it is characterized in that bed die 1 width can just hold diaphragm bag.Negative pole core width of the present invention is identical with the diaphragm bag width, between two negative pole cores the diaphragm bag of putting into positive pole piece 3 is set; The collector 4 of positive and negative pole piece is overlapping being connected to one respectively.Its special feature of assembling mode of pole piece of the present invention is that positive and negative pole piece venturi portion draws from both sides respectively.When positive plate stacks, stack successively on the right side with venturi portion left by venturi portion.Equally, negative plate stacks on the right side with venturi portion left successively by venturi portion when stacking.The lug brace of described cover plate is drawn from two side directions of cover plate respectively.It is characterized in that having sulculus on the lug brace, its role is to make the collector 4 of pole piece 3 from sulculus, to draw.The collector 4 of described pole piece 3 is welded on the diverse location of lug brace, has avoided the stacking space of causing of lug to waste.Positive and negative collector 4 all can be welded on 2 or 4 positions in each mould, has greatly reduced the welding difficulty, avoids lug stacking.After 4 welding of described collector were finished, insulation spacer was pasted in the outside, puts into shell together with pole piece 3, it is characterized in that distance between the pole piece 3 both sides insulation spacers and the width between the battery core outer casing inner wall closely cooperate.
The invention provides a kind of lamination mould, be divided into upper and lower mould two parts, as shown in Figure 1, its material electrolyte resistance corrosion.Bed die 1 location pole piece 3, mold 2 and bed die 1 common fixedly pole piece 3.It is bag-shaped that barrier film is, and the barrier film of two certain sizes that cut out is hot-forming through metal die, plays the effect of fixing positive pole piece.The negative pole core is consistent with the diaphragm bag width, can just be contained within the width of bed die 1, and the diaphragm bag that inserts positive pole piece is set between two negative pole cores, and stack forms pole piece 3 successively.Mold 2 is buckled on the bed die 1 fixedly pole piece 3, and with gummed paper mould is fixed.Described battery case is square aluminum hull, and the aluminum hull cover plate comprises the lug brace of positive and negative electrode.
The preparation of the positive pole piece of the present invention: after LiFePO4 powder, electrically conductive graphite, PVDF mixing, be dispersed in the nmp solution, form slurry, then be coated in equably the thick aluminium foil two sides of 0.016mm, the drying desolventizing, and roll-in, die-cut formation positive plate, pole piece is of a size of 115mm*134mm.
The preparation of negative pole core of the present invention: after graphous graphite powder, electrically conductive graphite, CMC, SBR mixing, be dispersed in the deionized water, form slurry, then be coated in equably the thick Copper Foil two sides of 0.010mm, the drying desolventizing, and roll-in, die-cut formation negative plate, pole piece is of a size of 119mm*139mm.
The preparation of diaphragm bag of the present invention: barrier film is cut into the small pieces of size 119*139mm, again with two barrier films through hot-forming, with three sealings of barrier film, the position of sealing moulding is between positive plate and negative plate, potted line is of a size of 115*136mm.
The selected aluminum hull of the present embodiment be of a size of the wide * of thick * high=36mm*130mm*152mm, wall thickness 0.8mm.
In the present embodiment mold be of a size of the wide * of thick * high=34mm*120mm*140mm, bed die be of a size of wide * high=120mm*140mm, walled thickness is 0.5mm.
The assembling process of stack type lithium ion battery of the present invention: positive pole piece is encased in the diaphragm bag.Bed die 1 is lain on the work top, at first the negative pole core is put into bed die 1, negative pole core venturi portion is drawn from the slotted eye 5 of bed die 1, the negative pole core is concordant with bed die 1 opposite side without an end of venturi portion, the diaphragm bag that then positive pole piece will be housed overlays on the negative pole core, positive pole piece venturi portion is drawn from the slotted eye 5 of bed die 1 opposite side towards the opposite direction of negative pole core venturi portion, and the diaphragm bag bottom is concordant with bed die 1 side.By above method negative pole core and diaphragm bag are put into bed die 1 successively, the venturi portion of negative pole core is drawn from the left and right slotted eye 5 of bed die 1 one sides successively, the venturi portion of positive pole piece is drawn from the left and right slotted eye 5 of bed die 1 opposite side successively, the superiors are the negative pole core, at last mold 2 are enclosed within on the bed die 1 fixedly pole piece 3.Bed die 1 and mold 2 usefulness gummed papers are fixed.Then positive and negative pole piece is exposed in the sulculus of venturi portion from cover plate positive and negative electrode brace of mould and pass, be welded on respectively on the cover plate positive and negative electrode lug brace, after finishing, welding buckling insulation spacer at positive and negative electrode lug brace respectively, put in the square aluminum hull and welded seal, injection contains the organic electrolyte of electrolyte LiPF6, obtains the 50Ah stack type lithium ion battery after changing into.
Advantage of the present invention is as follows: (1) small investment does not need expensive laminating equipment; (2) production efficiency is high, and method of operation is easy, and the pole piece contraposition is accurate, and the employee does not need can operate through special training, is applicable to large-scale production.(3) shell adopts aluminum hull, has anti-explosion valve structure, and is safe and reliable.The present invention also has following usefulness except having above-mentioned advantage: (1) positive plate inserts in the diaphragm bag, and diaphragm bag has hot-forming position limiting sealed line, plays encapsulation and fixedly positive plate effect; (2) negative plate is consistent with the diaphragm bag width, can just be contained within the bed die width, and bed die plays the effect of location diaphragm bag and negative plate, and the positive and negative plate contraposition is accurate, and can not misplace.(3) pole piece fixing in mould after carrying and welding electrode ear, simple and convenient and can not damage pole piece.(4) pole piece enters shell together with mould, has overcome pole piece fluffy, enters shell and easily scratches, and is difficult for the shortcoming into shell.(5) the pole piece lug can be welded on a plurality of positions, and soldering reliability is high, and welding takes up room little.
Embodiment recited above is described preferred implementation of the present invention; be not that design of the present invention and protection range are limited; under the prerequisite that does not break away from design concept of the present invention; common engineers and technicians make technical scheme of the present invention in this area various modification and improvement all should fall into protection scope of the present invention.
Claims (7)
1. stacked square power lithium ion cell, comprise pole piece (3), it is characterized in that: pole piece (3) is installed in the bed die (1), pole piece (3) is provided with the collector (4) of protrusion, the side of bed die (1) is provided with slotted eye (5), collector (4) passes slotted eye (5), mold (2) be installed in bed die (1) above; The both sides of cover plate are provided with the lug brace, and the lug brace is provided with sulculus, and collector (4) is drawn from the sulculus of lug brace; Described bed die (1), mold (2), cover plate are packed in the shell, and the side of shell is provided with insulation spacer.
2. a kind of stacked square power lithium ion cell according to claim 1, it is characterized in that: the collector (4) of described pole piece (3) is located at a side.
3. a kind of stacked square power lithium ion cell according to claim 1, it is characterized in that: the side of described bed die (1) is provided with four slotted eyes (5), and a side is provided with two slotted eyes (5).
4. a kind of stacked square power lithium ion cell according to claim 1, it is characterized in that: described pole piece (3) is divided into both positive and negative, both positive and negative pole piece (3) intersecting, the outside of positive pole piece (3) is surrounded by diaphragm bag.
5. according to claim 1 or 4 described a kind of stacked square power lithium ion cells, it is characterized in that: the collector (4) of described positive pole piece (3) is in phase the same side, and the collector (4) of described negative pole core (3) is in phase the same side.
6. a kind of stacked square power lithium ion cell according to claim 1, it is characterized in that: described collector (4) is welded on the lug brace, and collector (4) is welded on the diverse location of lug brace.
7. a kind of stacked square power lithium ion cell according to claim 1 is characterized in that: described bed die (1) and mold (2) are made by the material of electrolyte resistance corrosion.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013100016611A CN103022571A (en) | 2013-01-05 | 2013-01-05 | Stacked square power lithium-ion battery |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013100016611A CN103022571A (en) | 2013-01-05 | 2013-01-05 | Stacked square power lithium-ion battery |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN103022571A true CN103022571A (en) | 2013-04-03 |
Family
ID=47970872
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2013100016611A Pending CN103022571A (en) | 2013-01-05 | 2013-01-05 | Stacked square power lithium-ion battery |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103022571A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103346354A (en) * | 2013-06-26 | 2013-10-09 | 东莞新能源科技有限公司 | Method for preparing lithium ion cell |
| CN105280950A (en) * | 2014-05-30 | 2016-01-27 | 三洋电机株式会社 | Rectangular charging battery |
| CN109326744A (en) * | 2018-09-13 | 2019-02-12 | 深圳光韵达机电设备有限公司 | Lithium ion battery hard shell encapsulating structure and its processing method |
| CN114079111A (en) * | 2020-08-11 | 2022-02-22 | 北京好风光储能技术有限公司 | Large-scale vertical energy storage battery and energy storage container |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2717037Y (en) * | 2004-06-11 | 2005-08-10 | 比亚迪股份有限公司 | Lithium ion battery |
| CN101997104A (en) * | 2009-08-17 | 2011-03-30 | Sb锂摩托有限公司 | Rechargeable battery |
-
2013
- 2013-01-05 CN CN2013100016611A patent/CN103022571A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2717037Y (en) * | 2004-06-11 | 2005-08-10 | 比亚迪股份有限公司 | Lithium ion battery |
| CN101997104A (en) * | 2009-08-17 | 2011-03-30 | Sb锂摩托有限公司 | Rechargeable battery |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103346354A (en) * | 2013-06-26 | 2013-10-09 | 东莞新能源科技有限公司 | Method for preparing lithium ion cell |
| CN105280950A (en) * | 2014-05-30 | 2016-01-27 | 三洋电机株式会社 | Rectangular charging battery |
| CN105280950B (en) * | 2014-05-30 | 2018-10-09 | 三洋电机株式会社 | Rectangular rechargeable battery |
| CN109326744A (en) * | 2018-09-13 | 2019-02-12 | 深圳光韵达机电设备有限公司 | Lithium ion battery hard shell encapsulating structure and its processing method |
| CN109326744B (en) * | 2018-09-13 | 2023-03-17 | 深圳光韵达机电设备有限公司 | Hard shell packaging structure of lithium ion battery and processing method thereof |
| CN114079111A (en) * | 2020-08-11 | 2022-02-22 | 北京好风光储能技术有限公司 | Large-scale vertical energy storage battery and energy storage container |
| CN114079111B (en) * | 2020-08-11 | 2023-11-14 | 好风光储能技术(成都)有限公司 | Large vertical energy storage battery and energy storage container |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN201146222Y (en) | Novel lamination type lithium ion secondary battery | |
| CN104681878A (en) | Manufacturing method of winding type lithium ion battery and winding type lithium ion battery | |
| CN102623746A (en) | Flexibly-packaged lithium ion battery | |
| CN109768337A (en) | The chargeable button-shaped soft bag lithium ionic cell of one kind and processing method | |
| CN103022571A (en) | Stacked square power lithium-ion battery | |
| CN102983363A (en) | Rolling core, polymer lithium ion battery and preparation method | |
| CN105633333B (en) | A kind of lithium ion cylinder structure battery and preparation method thereof | |
| CN202454681U (en) | High-efficiency lithium ion battery | |
| CN203521496U (en) | Apple-shaped large-power polymer lithium battery | |
| CN203932227U (en) | A kind of lithium ion battery | |
| CN209981391U (en) | High-capacity cylindrical battery | |
| CN101834318B (en) | Electric core structure of lithium battery | |
| CN217768626U (en) | Battery cell, battery and power consumption device | |
| CN217588983U (en) | Middle lug-outlet type positive plate, battery cell and battery | |
| CN202308207U (en) | Multi-pole-piece winding-type cell and square flexible-package lithium battery | |
| CN214411292U (en) | Winding and lamination composite lithium battery | |
| CN203103360U (en) | Stacked lithium ion battery shell | |
| CN201673968U (en) | Miniature polymer lithium ion battery with dissymmetrical assembly structure | |
| CN201741765U (en) | Battery cell of power-type lithium ion battery | |
| CN201112481Y (en) | Soft package lithium magnesium disposable rectangular cell structure | |
| KR20230124670A (en) | Electrode assembly and its manufacturing method, battery cell, battery and electric device | |
| CN201741762U (en) | High-capacity high-power lithium ion battery | |
| CN203367419U (en) | Wound electrode plate and lithium ion battery formed by winding same | |
| CN202058814U (en) | Circular lithium ion battery | |
| CN201845835U (en) | Coiled lithium ion power battery cell |
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: 20130403 |