CN103346353B - A kind of battery battery core, its manufacture method and battery thereof - Google Patents
A kind of battery battery core, its manufacture method and battery thereof Download PDFInfo
- Publication number
- CN103346353B CN103346353B CN201310254233.XA CN201310254233A CN103346353B CN 103346353 B CN103346353 B CN 103346353B CN 201310254233 A CN201310254233 A CN 201310254233A CN 103346353 B CN103346353 B CN 103346353B
- Authority
- CN
- China
- Prior art keywords
- par
- positive plate
- plate
- battery
- negative
- 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.)
- Active
Links
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
Landscapes
- Connection Of Batteries Or Terminals (AREA)
- Battery Electrode And Active Subsutance (AREA)
Abstract
The invention discloses a kind of battery battery core, its manufacture method and battery thereof, this battery battery core comprises a positive plate and a negative plate, negative plate is between the first outer positive plate and the second outer positive plate, battery battery core comprises the first par, the first kink, the second par, the second kink and the 3rd par that connect successively, positive plate is only provided with positive active material coating on a surface relative with negative plate, and two surfaces of negative plate are provided with negative electrode active material coating; At the first par and the second par opposite position, the outer positive plate of part first of the first par is adjacent with the outer positive plate of part first of the second par and be oppositely arranged; At the second par and the 3rd par opposite position, the outer positive plate of part second of the second par is adjacent with the outer positive plate of part second of the 3rd par and be oppositely arranged.
Description
[technical field]
The present invention relates to field of batteries, be specifically related to a kind of battery battery core and manufacture method thereof.
[background technology]
In recent years, lead-acid battery was because it is seriously polluted, and the occupation rate in market progressively declines; And conventional Ni-Cd(NI-G),Ni-MH(ni-mh) although etc. cylindrical battery pollution level far below lead-acid battery, along with increasing rapidly of electrical appliance kind,Performance and the shape specification of people to battery had harsher requirement, and polymer soft bag lithium ionic cell relies on its energy closeSpend high, advantage, its occupying in market such as operating voltage is high, operating temperature range is wide, storage life is long and shape is changeableRate rises rapidly; In addition, because its environmental pollution is very little, lithium ion battery is also that country " 12 " plan is given priority toProject.
At present, polymer soft bag lithium ionic cell mainly contains two kinds of structures on market, a kind of rolls up cored structure for takeup type, be just,Between cathode pole piece and barrier film, being wound into cross section by winding needle is a kind of elliptoid volume core, then uses clad aluminum plastic film envelopeDress forms; Another is laminated structure, is by each small pieces independently of positive and negative electrode, then is stacked alternately with barrier film threeBecome battery core, then form by the encapsulation of clad aluminum plastic film. These two kinds of its advantages of the each tool of structure, the battery core of takeup type structure is being producedThe aspect such as efficiency and the qualification rate stacked battery core of comparing is much higher, and production cost is low; But put with regard to internal resistance, large multiplying powerThe electrical property aspects such as electricity and capacity performance but differ far away compared with laminated structure.
For current takeup type battery core, although its production efficiency, qualification rate and production cost aspect are with the obvious advantage, in itThe resistance performances such as little, heavy-current discharge performance and capacity performance that are not easy to do are undesirable; Although little, the large electric current of lamination type electric core internal resistanceThe superior performances such as electric discharge and capacity performance, but its production efficiency, qualification rate and production cost are high, these two kinds of electricityCored structure all has intrinsic advantage and shortcoming separately.
Publication number is that the patent document of CN102456907A discloses a kind of square battery cell structure, but in certain battery capacitySituation under, the volume of this battery battery core is larger.
[summary of the invention]
In order to overcome the deficiencies in the prior art, the invention provides preparation method and the battery of a kind of battery battery core, battery battery core,Thereby in the situation that ensureing battery capacity, make the volume of battery battery core less.
A kind of battery battery core, comprises a positive plate and a negative plate, and described positive plate comprises the first outer positive plate and secondOuter positive plate, described negative plate is between described the first outer positive plate and the second outer positive plate, and described battery battery core comprisesThe first par, the first kink, the second par, the second kink and the 3rd par that connect successively, described positive plateOnly be provided with positive active material coating on a surface relative with described negative plate, two surfaces of described negative plate are provided with negative pole and liveProperty material coating;
Described the first par is relative with the second par, and at described the first par and the second par opposite position, first is smoothThe outer positive plate of part first of portion is adjacent with the outer positive plate of part first of the second par and be oppositely arranged;
Described the second par is relative with the 3rd par, and at described the second par and the 3rd par opposite position, second is smoothThe outer positive plate of part second of portion is adjacent with the outer positive plate of part second of the 3rd par and be oppositely arranged.
Also comprise negative lug, described negative lug is connected with negative plate, and the connecting portion that described negative lug is connected with negative plate leans onThe boundary of nearly described the first outer positive plate and the second outer positive plate.
Also comprise positive pole ear, described positive pole ear is connected with positive plate, and described positive pole ear is arranged on described the first par,Described the first par comprises the boundary of described the first outer positive plate and the second outer positive plate.
Described battery battery core is lithium ion battery cell.
A kind of battery, it adopts described battery battery core.
A manufacture method for battery battery core, comprises the steps:
Positive plate bending step a: positive plate is bent into the first outer positive plate and the second outer positive plate, outside described firstLayer positive plate is only provided with positive active material coating at relative inner surface with the second outer positive plate;
Barrier film negative plate inserting step: barrier film and a negative plate are inserted between the first outer positive plate and the second outer positive plate,Wherein, barrier film comprises the first barrier film and the second barrier film, described negative plate between the first barrier film and the second barrier film, described negative plateTwo surfaces be provided with negative electrode active material coating;
Battery core bending step: primary importance and the second place at positive plate bend successively, comprises connection successively thereby formThe battery battery core of the first par, the first kink, the second par, the second kink and the 3rd par;
Described the first par is relative with the second par, and at described the first par and the second par opposite position, first is smoothThe outer positive plate of part first of portion is adjacent with the outer positive plate of part first of the second par and be oppositely arranged;
Described the second par is relative with the 3rd par, and at described the second par and the 3rd par opposite position, second is smoothThe outer positive plate of part second of portion is adjacent with the outer positive plate of part second of the 3rd par and be oppositely arranged.
Apply described positive active material coating at the inner surface of described the first outer positive plate, at described the second outer positive plateInner surface apply described positive active material coating, between the positive active material coating in two regions, exist without anodal activeThe zone line of material coating.
Also comprise negative lug, described negative lug is connected with negative plate, and the connecting portion that described negative lug is connected with negative plate leans onThe boundary of nearly described the first outer positive plate and the second outer positive plate.
Also comprise positive pole ear, described positive pole ear is connected with positive plate at described zone line, and described positive pole ear is arranged onDescribed the first par, described the first par comprises the boundary of described the first outer positive plate and the second outer positive plate.
Described battery battery core is lithium ion battery cell.
The invention has the beneficial effects as follows: in the situation that battery capacity is certain, the volume of battery battery core 1 of the present invention can be compared ratioThe volume of the battery core in file is less; In addition, positive plate of the present invention and negative plate do not need to look like the utmost point in documentsSheet carries out that extra die-cut (this procedure in documents has not only reduced production efficiency, and carries out extra die-cut like thatOperation is easily brought burr to pole piece, thereby burr easily pierces through the security performance of barrier film reduction battery core), thus production can be improvedThe performance of efficiency and battery battery core.
This battery battery core adopts with the similar pole piece of similar takeup type battery core and makes battery core, has not only absorbed takeup type battery core operation letterThe advantage that folk prescription just, production efficiency is high, qualification rate is high and cost is low; The present invention simultaneously also has and is similar to stacked battery coreFeature (takeup type electric core winding " dead band ", roll up core at the area of the kink of every layer along with the increase of battery core thickness progressivelyIncrease), every one deck " dead band " area of battery battery core structure is all identical with ground floor (i.e. " dead band " area minimum), withTakeup type volume core is compared, and the area reacting that positive and negative electrode pole piece is corresponding is just larger, and capacity performance is just higher, and internal resistance simultaneously alsoCan obviously reduce than takeup type volume core, close to laminated cell internal resistance, and then can support heavy-current discharge; In addition, thisThe dimensions length of the bright every one deck pole piece of battery battery core structure is all identical, for battery core design, has increased the degree of accuracy of design;Meanwhile, the present invention adopts the head of positive plate doubling, negative plate place near broken line and make battery core, fixed in lug centre-to-centre spacingAlso more accurate than takeup type battery core on position.
[brief description of the drawings]
Fig. 1 is the structural representation of the battery battery core of an embodiment of the present invention;
Fig. 2 is the schematic side view of the positive plate of the battery battery core of Fig. 1;
Fig. 3 is the schematic top plan view of the positive plate of Fig. 2;
Fig. 4 is the schematic side view of the negative plate of the battery battery core of Fig. 1;
Fig. 5 is the schematic top plan view of the negative plate of the battery battery core of Fig. 1.
[detailed description of the invention]
Below with reference to accompanying drawing, specific embodiments of the invention are described in further detail.
As shown in Figure 1, a kind of lithium ion battery cell 1, comprise a positive plate 2, negative plate 3, barrier film 4,Positive pole ear and negative lug, as shown in Figure 2, positive plate 2 comprises the first outer positive plate 21 and the second outer positive plate 22,Barrier film 4 comprises the first barrier film 41 and the second barrier film 42, and negative plate 3 is at the first outer positive plate 21 and the second outer positive plate 22Between, the first barrier film 41 is between the first outer positive plate 21 and negative plate 3, and the second barrier film 42 is at the second outer positive plate22 and negative plate 3 between. Positive plate 2 is only provided with positive active material coating 23 at the inner surface relative with negative plate 3, andTwo surfaces relative with positive plate 2 of negative plate 3 are respectively equipped with negative electrode active material coating 31 and negative electrode active material coating32。
Near positive plate (as the part positive plate 25) boundary 26 of the first outer positive plate 21 and the second outer positive plate 22Inner surface do not apply positive active material coating, be connected to facilitate with positive pole ear 24, the head of negative plate 3 does not have yetScribble negative electrode active material coating, be connected the connecting portion that negative lug 33 is connected with negative plate 3 to facilitate with negative lug 33Near the boundary 26 of the first outer positive plate 21 and the second outer positive plate 22; Positive pole ear 24 is arranged on the first par 11The inner surface of the positive plate 2 at place, the first par 11 comprises the friendship of the first outer positive plate 21 and the second outer positive plate 22Boundary 26.
Lithium ion battery cell 1 structurally comprises the first par 11, the first kink 12, the second par that connect successively13, the second kink 14, the 3rd par 15, the 4th kink 16 and the 4th par 17. The number of par and kinkAmount, determines according to the capacity of battery core 1, if the required capacity of battery core 1 is larger, and the generally speaking quantity of par and kinkJust more.
Adjacent par is similar stacked together, and the first par 11 is relative with the second par 13, in the first par 11With the second par 12 opposite positions, the outer positive plate 111 of part first of the first par 11 and the part of the second par 13Positive plate 131 is adjacent and be oppositely arranged; The second par 13 is relative with the 3rd par 15, the second par 13 and the 3rdPar 15 opposite positions, the part positive plate 152 of the part positive plate 132 of the second par 13 and the 3rd par 15 is adjacentAnd be oppositely arranged. The part positive plate 152 of the part positive plate 132 of the second par 13 and the 3rd par 15 belongs to secondThe part positive plate 111 of outer positive plate 22, the first pars 11 and the part positive plate 131 of the second par 13 belong to theOne outer positive plate 21.
The size of capacity of lithium ion battery, positive active material quantity is proportionate, and the degree that positive active material plays a roleRelevant with the quantity of negative electrode active material, the corresponding negative electrode active material of positive active material is more abundant, positive electrode active material confrontation capacityThe effect of performance is just better.
In the positive active material of this battery battery core 1 quantity relative with negative electrode active material, with the battery battery core in documentsThe positive active material quantity relative with negative electrode active material identical situation under, and the positive plate consuming and negative plateTotal amount only have positive plate in documents and negative plate total amount 3/4, therefore this battery in the situation that battery capacity is certainBattery core 1 can keep less volume.
Above-mentioned lithium ion battery cell 1 can be manufactured by following steps, as shown in Figures 2 to 5:
Positive plate making step a: surface on a positive plate 2 applies two disjunct positive active material coatings 23,On connecting portion 26 between the two, do not apply positive active material coating 23, and then weld positive pole ear 24 on connecting portion 26;
Negative plate making step: two surfaces at a negative plate 3 apply respectively negative electrode active material coating 32 and negative electrode activeCoating 31, and leave a region at the head of negative plate 3 and do not apply this negative electrode active material, then at this region welding negative poleLug 33;
A barrier film 4 is folded in half into after the first barrier film 41 and the second barrier film 42, the head of negative plate 3 is inserted to the first barrier film 41And second between barrier film 42;
Make two positive active material coatings 23 relative along connecting portion 26 doublings positive plate 3, thereby just form the first skinPole piece 21 and the second outer positive plate 22;
Then barrier film 4 and negative plate 3 are inserted between the first outer positive plate 21 and the second outer positive plate 22, and make negative poleLug 33 is near connecting portion 26;
Then utilize the volume crown according to the width of winding needle, positive plate 2, negative plate 3 and barrier film 4 to be folded back and forth, in formationThe battery battery core 1 of stating, and complete battery core ending. By the battery battery core after folding 1, after with high tempreture tape, dual-side being compressed, pasteJail. Finally use clad aluminum plastic film that battery battery core is carried out to packaging by hot pressing.
Claims (2)
1. a manufacture method for battery battery core, is characterized in that, comprises the steps:
Positive plate bending step: a positive plate is bent into the first outer positive plate and the second outer positive plate, described inThe first outer positive plate is only provided with positive active material coating at relative inner surface with the second outer positive plate; InstituteThe inner surface of stating the first outer positive plate applies described positive active material coating, at described the second outer positive plateInner surface applies described positive active material coating, exists without anodal between the positive active material coating in two regionsThe zone line of coating layer of active substance; Barrier film negative plate inserting step: after described positive plate bending step, will be everyFilm and a negative plate insert between the first outer positive plate and the second outer positive plate, wherein, barrier film comprise first everyFilm and the second barrier film, described negative plate is between the first barrier film and the second barrier film, and two surfaces of described negative plate are provided withNegative electrode active material coating; Negative lug is connected with described negative plate, and the head of described negative plate leaves a region notApply described negative electrode active material, described negative lug is welded in described region, and described negative lug is connected with negative plateConnecting portion is near the boundary of described the first outer positive plate and the second outer positive plate;
Battery core bending step: primary importance and the second place at positive plate bend successively, comply with thereby formation comprisesThe battery electricity of the first par, the first kink, the second par, the second kink and the 3rd par of inferior connectionCore;
Described the first par is relative with the second par, at described the first par and the second par opposite position, theThe outer positive plate of part first of one par and relative establish adjacent with the outer positive plate of part first of the second parPut;
Described the second par is relative with the 3rd par, at described the second par and the 3rd par opposite position, theThe outer positive plate of part second of two pars and relative establish adjacent with the outer positive plate of part second of the 3rd parPut;
Positive pole ear is connected with positive plate at described zone line, and described positive pole ear is arranged on described first smoothPortion, described the first par comprises the boundary of described the first outer positive plate and the second outer positive plate.
2. the manufacture method of battery battery core as claimed in claim 1, is characterized in that: described battery battery core is lithium ionBattery battery core.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310254233.XA CN103346353B (en) | 2013-06-24 | 2013-06-24 | A kind of battery battery core, its manufacture method and battery thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310254233.XA CN103346353B (en) | 2013-06-24 | 2013-06-24 | A kind of battery battery core, its manufacture method and battery thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103346353A CN103346353A (en) | 2013-10-09 |
| CN103346353B true CN103346353B (en) | 2016-05-25 |
Family
ID=49281136
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310254233.XA Active CN103346353B (en) | 2013-06-24 | 2013-06-24 | A kind of battery battery core, its manufacture method and battery thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103346353B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110190319B (en) * | 2019-05-27 | 2024-05-14 | 宁德时代新能源科技股份有限公司 | Electrode assembly and secondary battery |
| CN117673429A (en) * | 2022-09-08 | 2024-03-08 | 荣耀终端有限公司 | Battery cell |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2713657Y (en) * | 2004-07-20 | 2005-07-27 | 刘立君 | Lithium ion power battery |
| JP5065014B2 (en) * | 2005-04-26 | 2012-10-31 | パナソニック株式会社 | battery |
| CN1929184B (en) * | 2005-09-05 | 2010-05-12 | 深圳市比克电池有限公司 | Method for manufacturing lithium ion battery |
| CN102569901B (en) * | 2011-12-27 | 2016-01-13 | 华为技术有限公司 | A kind of lithium ion battery, core of lithium ion cell and preparation method thereof |
| CN102983363B (en) * | 2012-08-23 | 2015-03-25 | 珠海光宇电池有限公司 | Rolling core, polymer lithium ion battery and preparation method |
-
2013
- 2013-06-24 CN CN201310254233.XA patent/CN103346353B/en active Active
Also Published As
| Publication number | Publication date |
|---|---|
| CN103346353A (en) | 2013-10-09 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| WO2019024873A1 (en) | Soft pack lithium ion battery and manufacturing method therefor | |
| CN110729447A (en) | Battery cell pole piece and battery cell | |
| JP6284532B2 (en) | Battery cell including electrode assembly with offset arrangement | |
| CN104900905A (en) | Laminated lithium ion battery and production process thereof | |
| CN101656330A (en) | Method for manufacturing lithium ion battery cell | |
| CN101106203A (en) | Lithium battery with new electrode structure and its making method | |
| CN112531142A (en) | Pole piece for soft package button battery, button battery and preparation method of pole piece | |
| CN104681878A (en) | Manufacturing method of winding type lithium ion battery and winding type lithium ion battery | |
| CN105742721A (en) | High-energy-ratio low-internal-resistance cylindrical lithium ion battery | |
| CN110783638B (en) | Winding stacked battery cell and preparation method thereof | |
| CN102024990A (en) | Method for manufacturing cells of power lithium ion batteries | |
| CN202454681U (en) | High-efficiency lithium ion battery | |
| CN201038228Y (en) | Special-shaped battery | |
| CN103346353B (en) | A kind of battery battery core, its manufacture method and battery thereof | |
| CN201369367Y (en) | Power lithium battery bare cell with double-tab structure | |
| CN107302110A (en) | Takeup type battery core | |
| CN210926138U (en) | Battery cell pole piece | |
| CN219832696U (en) | Full-tab battery pole piece structure, battery winding core and cylindrical battery | |
| CN202695606U (en) | Z-shaped laminated cell of lithium ion battery for high-capacity automobile | |
| CN111883853A (en) | Parallelly connected assembled many rolls up core lithium cell | |
| CN103280549A (en) | Double-winding-core polymer flexibly-packaged lithium-ion battery and manufacturing method thereof | |
| CN201741765U (en) | Battery cell of power-type lithium ion battery | |
| CN202454680U (en) | Low-inner-resistance coiling type lithium battery | |
| CN201812891U (en) | Lithium battery | |
| CN202308205U (en) | Lithium ion battery pole core and lithium ion battery |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |