CN103022572A - Winding type square power lithium-ion battery - Google Patents
Winding type square power lithium-ion battery Download PDFInfo
- Publication number
- CN103022572A CN103022572A CN2013100017811A CN201310001781A CN103022572A CN 103022572 A CN103022572 A CN 103022572A CN 2013100017811 A CN2013100017811 A CN 2013100017811A CN 201310001781 A CN201310001781 A CN 201310001781A CN 103022572 A CN103022572 A CN 103022572A
- Authority
- CN
- China
- Prior art keywords
- volume
- lug
- core
- power lithium
- 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
Landscapes
- Connection Of Batteries Or Terminals (AREA)
Abstract
The invention discloses a winding type square power lithium-ion battery. The winding type square power lithium-ion battery comprises winding cores, wherein baffle plates are respectively mounted at the two ends of winding needles, pole tab grooves are formed in the baffle plates, the winding cores are wound on the winding needles, and pole tabs are led out of the two sides of each winding core and penetrate through the pole tab grooves; 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 pole tabs are led out of the small grooves of the pole tab connecting pieces; and the winding cores and the cover plates are mounted in a battery case. The winding type square power lithium-ion battery has the advantages that the problems in the prior art are solved, resources are saved, and the cost is lower.
Description
Technical field
The present invention relates to a kind of lithium ion battery, relate in particular to a kind of takeup type square power lithium ion cell.
Background technology
Apply to automotive field with the higher lithium ion battery of energy density and just becoming a core technology, it has the characteristics such as lightweight, that energy storage is large, power is large, pollution-free, life-span long, the self discharge coefficient is little, temperature accommodation is wide in range, is the comparatively desirable car batteries such as electric bicycle, battery-operated motor cycle, electric sedan, electronic truck.
In existing battery manufacturing process, reeling has the high characteristics of efficient, is widely used in cylindrical battery and the rectangular cell.Cylindrical battery has high conformity, the characteristics of being convenient to produce in enormous quantities, but the finite capacity of cell, and also heat dispersion is affected, thereby the large-sized power lithium ion battery generally adopts square structure.
Rectangular lithium ion battery electric core winding pin is double-deck centripetal swing type design now, because the volume pin is reused, reaches hundreds thousand of times, and this type of its gross thickness of double-decker volume pin also needs certain size to keep its intensity.
In the winding process, positive plate, negative plate and barrier film are wrapped in coiling and molding on the volume pin, then will roll up pin and extract, to the moulding of volume core concora crush.The crack was too large between volume core finished product stayed because of the twin-laminate roll pin in flattening operation, Internal and external cycle material problem of disharmony occurred after causing battery core to flatten and was out of shape, even produce S shape, rolled up simultaneously in-core layer pole piece at bending part because the active material obscission appears in higher curvature.
The large-sized power lithium ion battery needs to adopt the mode of multi pole ears for improving the flash-over characteristic of battery, often stacking rear welding of lug, and the lug place occupies more space.Play insulation and fixation although increased insulation spacer at the lug place, externally during high vibration, the volume core still has the activity possibility, has potential safety hazard.
Simultaneously, rolling up the core making and entering in the shell process, there is damage hidden danger in barrier film transverse end surface edge and can't detects fully, and in entering shell and battery core high vibration process, all there is the extruding possibility in the barrier film transverse end surface, makes battery have potential safety hazard.
In sum, current Wound type power lithium-ion cell has the defective of following several respects at least:
(1) consistency of battery core is relatively poor;
(2) volume core inner space is large, needs a large amount of electrolyte to fill, and has increased the cost of battery;
(3) winding needle is extracted rear pole piece without tension force, and the distortion of volume core strengthens after the circulation, makes the battery core bulging, and then has influence on chemical property and size Control;
(4) internal layer pole piece bending part active material comes off after the concora crush moulding, has increased the self discharge of battery.
(5) volume core lug occupies more space, has reduced the battery volume energy density.
(6) the volume core has the activity possibility, has potential safety hazard.
(7) damage of barrier film transverse end surface edge causes potential safety hazard.
Summary of the invention
The purpose of this invention is to provide a kind of takeup type square power lithium ion cell, solved the problem of prior art, eliminate the distortion of volume core and the phenomenon that active material comes off, fix the volume core, increase battery core inner space utilance, improve the security performance of battery.
For achieving the above object, the technical solution used in the present invention is:
A kind of takeup type square power lithium ion cell comprises the volume core, it is characterized in that: baffle plate is installed respectively at the two ends of volume pin, and baffle plate is provided with the lug groove, and the volume core is wrapped on the volume pin, and lug is drawn in the both sides of volume core, and lug passes the lug groove; The both sides of cover plate are provided with the lug brace, and the lug brace is provided with sulculus, and lug is drawn from the sulculus of lug brace; Described volume core and the cover plate battery case of packing into.
According to described a kind of takeup type square power lithium ion cell, it is characterized in that: described volume pin inside is provided with reinforcement.
According to described a kind of takeup type square power lithium ion cell, it is characterized in that: described volume pin stacks up with the volume core, volume pin and the both sides installing insulating pad of rolling up core, and volume pin, volume core and insulation spacer all change battery case over to.
According to described a kind of takeup type square power lithium ion cell, it is characterized in that: described lug brace is provided with sulculus, and draw-in groove is drawn from described sulculus.
According to described a kind of takeup type square power lithium ion cell, it is characterized in that: described insulation spacer is " recessed " font, and its inboard spacing closely cooperates with the baffle plate outside of volume pin.
According to described a kind of takeup type square power lithium ion cell, it is characterized in that: described tab welding is on the diverse location of lug brace.
Advantageous effect of the present invention is: in the technical program, do not extract by employing thin type volume pin and volume pin, the volume core inner does not have obvious space, and the volume core does not need concora crush and roll up core indeformable, has improved the consistency of battery core.In the technical program, the volume core inner stayed by the volume pin and volume pin edge is curved, has increased the radius of curvature of electrode slice, has eliminated the technical problem that higher curvature causes takeup type battery core active material to come off.In the technical program, the volume pin is stayed the volume core inner, makes electrode slice have tension force, has reduced the distortion of circulation rear electrode sheet, has eliminated the bulging phenomenon of square electric cell, has improved battery core chemical property and security performance.In the technical program, the tab welding of different volume cores has avoided lug stacking at the diverse location of cover plate lug brace, and lug takes up space little.In the technical program, the volume pin will roll up core and be fixed on battery core inside, even high vibration also makes it can't activity, improve the battery core fail safe.In the technical program, volume pin baffle plate and insulation spacer protect the barrier film transverse end surface to avoid being squeezed and damage jointly, have improved the battery core fail safe.Another usefulness of the present invention is, it is closely smooth to reel, and the volume core inner is without obvious space, and after circulation without the bulging phenomenon, therefore do not need a large amount of electrolyte to fill, greatly saved the electrolyte consumption.The electrolyte consumption reduces the security performance that has also improved battery core simultaneously.
Description of drawings
Fig. 1 is structural representation of the present invention.
Fig. 2 is the structural representation of volume core.
Fig. 3 is the structural representation of volume pin.
In the accompanying drawing: 1, volume core; 2, insulation spacer; 3, lug; 4, draw-in groove; 5, baffle plate; 6, lug groove; 7, volume pin; 8, reinforcement.
Embodiment
The invention will be further described below in conjunction with the drawings and specific embodiments:
The present invention as shown in Figure 1, 2, 3, a kind of takeup type square power lithium ion cell, comprise the volume core 1, it is characterized in that: baffle plate 5 is installed respectively at the two ends of volume pin 7, and baffle plate 5 is provided with lug groove 6, and volume core 1 is wrapped on the volume pin 7, lug 3 is drawn in the both sides of volume core 1, and lug 3 passes lug groove 6; The both sides of cover plate are provided with the lug brace, and the lug brace is provided with sulculus, and lug 3 is drawn from the sulculus of lug brace; Described volume core 1 and the cover plate battery case of packing into.According to described a kind of takeup type square power lithium ion cell, it is characterized in that: described volume pin 7 inside are provided with reinforcement 8.According to described a kind of takeup type square power lithium ion cell, it is characterized in that: described volume pin 7 stacks up with volume core 1, volume pin 7 and the both sides installing insulating pad 2 of rolling up core 1, and volume pin 7, volume core 1 all change battery case over to insulation spacer 2.According to described a kind of takeup type square power lithium ion cell, it is characterized in that: described lug brace is provided with sulculus, and draw-in groove 4 is drawn from described sulculus.According to described a kind of takeup type square power lithium ion cell, it is characterized in that: described insulation spacer 2 is " recessed " font, and its inboard spacing closely cooperates with baffle plate 5 outsides of volume pin 7.According to described a kind of takeup type square power lithium ion cell, it is characterized in that: described lug 3 is welded on the diverse location of lug brace.
Use principle of the present invention is as follows, and volume pin 7 of the present invention is a kind of one chip thin type volume pin, and its material is insulating material, and there is metal reinforcing 8 its inside, and there are insulation barrier 5 and draw-in groove 4 in its two ends.There is baffle plate 5 at described volume pin 7 its two ends, and described baffle plate 5 its role is to fixedly barrier film and pole piece position and the effect of protection barrier film, and the hidden danger of the damage that eradicates a mental barrier is simultaneously as insulating trip.There is draw-in groove 4 in described volume pin 7 its two end-stopping plates, 5 outsides, and described draw-in groove 4 its role is to connect winding apparatus, self-contained battery cover plate lug brace, fixedly lug insulation spacer.Width and battery core enclosure width between the described volume pin 7 two ends draw-in grooves 4 closely cooperate, and are completely fixed behind the core winding into shell.Assembling mode of the present invention is characterized in that providing a kind of insulation spacer 2 and cover plate and volume core accumulation mode in parallel.Described insulation spacer 2 is " recessed " font, and its inboard spacing closely cooperates with volume pin baffle plate 5 outsides, plays fixing volume core 1 effect.Its 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 fix with rolling up pin draw-in groove 4, and volume core lug is drawn from sulculus.Described volume core lug 3 is welded on lug brace diverse location, has avoided the stacking space of causing of lug to waste.Accumulation was in parallel before and after described volume core parallel connection accumulation mode can be divided into, mixed-stacking is in parallel up and down with front and back to pile up parallel connection up and down.
The present invention also provides the manufacture method of volume core, and operating procedure is as follows:
The making material of A, preparation volume core comprises positive and negative plate and barrier film two volumes;
B, when reeling, will align about two volume barrier films, the head of barrier film is scalded welded together, will roll up pin and go to level and intert between the barrier film, push down the barrier film of rolling up above the pin with the thin type compressing tablet;
C, positive plate or negative plate are inserted between volume pin and the below barrier film, after the number of turns of the regulation of reeling, to roll up pin and go to level, extract the thin type compressing tablet, again the volume pin with above corresponding negative plate or the positive plate of insertion between the barrier film, the lug of the lug of pole piece and the pole piece that inserts for the first time is in different directions, rotates the volume pin remaining number of turns of reeling.
To roll up pin after D, the end of reeling pulls up from winding apparatus together with the volume core.
E, several volume cores are in parallel, and with two insulation spacers fixing core top and bottom of rolling up respectively.
F, the cover plate positive ear connecting sheet is fixed on the draw-in groove of volume core anode ear one side, and will rolls up the core anode ear and from cover plate positive ear connecting sheet sulculus, draw.Cover plate negative electrode lug brace is fixed on the draw-in groove of volume core negative electrode lug one side, and will rolls up the core negative electrode lug and from cover plate negative electrode lug brace aperture, draw.
G, will roll up the core anode ear and be welded on cover plate positive ear connecting sheet relevant position, volume core negative pole lug welding is in cover plate negative electrode lug brace relevant position.
H, the sidepiece insulation spacer is separately fixed on the draw-in groove in the positive and negative lug brace outside.
I, with core winding into shell, the laser welding shell, perfusion electrolyte is until change into, battery core completes.
Make 36230210A model lithium ion battery, the material of pole piece group is consistent with existing winding process material, comprises the barrier film of each volume of positive and negative plate and isolation positive/negative plate.The manufacture method of battery roll core is as follows:
At first reel, selection thickness is 1.2mm, and width is volume pin a slice of 180mm, and the thickness of existing double-disk volume pin is 8mm.The two ends of volume pin length direction are draw-in groove.On up-coiler the pole piece group is reeled, make the volume core according to volume core manufacture method provided by the present invention: insert first negative plate, negative electrode lug is copper brace one end on the volume pin, inserts positive plate behind 1.5 circles of reeling, and anode ear is towards the volume pin other end.Finish and to roll up pin behind the coiling and pull up from winding apparatus together with the volume core.It is in parallel to roll up cores with 5, and fixes respectively volume core top and bottom with two insulation spacers.The cover plate positive ear connecting sheet is fixed on the draw-in groove of volume core anode ear one side, and will rolls up the core anode ear and from cover plate positive ear connecting sheet sulculus, draw.Cover plate negative electrode lug brace is fixed on the draw-in groove of volume core negative electrode lug one side, and will rolls up the core negative electrode lug and from cover plate negative electrode lug brace aperture, draw.To roll up the core anode ear and be welded on cover plate positive ear connecting sheet relevant position, volume core negative pole lug welding is in cover plate negative electrode lug brace relevant position.The sidepiece insulation spacer is separately fixed on the draw-in groove in the positive and negative lug brace outside.With core winding into shell, the laser welding shell pours into electrolyte until change into, and obtains the 36230210A battery core.
The experiment contrast:
Adopt above-mentioned square volume core manufacture method to make 100 36230210A model lithium ion batteries as experimental example, measure battery core electrolyte content, self discharge, combo rate, cycle performance.
Adopt conventional electric core winding mode, namely double-decker volume pin is reeled, and extracts the moulding of volume pin concora crush behind the coiling, makes 100 lithium ion batteries of same model as Comparative Examples, measures battery core electrolyte content, self discharge, combo rate, cycle performance.Concrete comparing result is shown in table 1, table 2:
Table 1
Table 2
| The volume cored structure | 2000 circulation volume conservation rates | Thickness change after 2000 circulations |
| Comparative Examples | 88.9% | 4.22%（1.52mm） |
| Test example | 82.3% | 0.94%（0.34mm） |
By table 1, the battery core that adopts method for winding of the present invention to make, the electrolyte consumption has reduced 33.3%, 30 day to be shelved rear self-discharge rate and has reduced by 1.74%, and the consistency of the more as can be known battery core by the combo rate is significantly improved.By table 2 as can be known, owing to eliminated the bulging phenomenon of battery core, the battery core cycle performance also has obvious lifting.
By above test as can be known, adopt the battery core of the method for winding making of square power lithium ion cell of the present invention, can obviously improve the consistency of battery core, the obscission of elimination activity material, reduce self-discharge rate, eliminated the bulging phenomenon of battery core, cycle performance is obviously promoted.Simultaneously also reduce greatly the electrolyte consumption, saved cost.
In the technical program, do not extract by employing thin type volume pin and volume pin, the volume core inner does not have obvious space, and the volume core does not need concora crush and roll up core indeformable, has improved the consistency of battery core.In the technical program, the volume core inner stayed by the volume pin and volume pin edge is curved, has increased the radius of curvature of electrode slice, has eliminated the technical problem that higher curvature causes takeup type battery core active material to come off.In the technical program, the volume pin is stayed the volume core inner, makes electrode slice have tension force, has reduced the distortion of circulation rear electrode sheet, has eliminated the bulging phenomenon of square electric cell, has improved battery core chemical property and security performance.In the technical program, the tab welding of different volume cores has avoided lug stacking at the diverse location of cover plate lug brace, and lug takes up space little.In the technical program, the volume pin will roll up core and be fixed on battery core inside, even high vibration also makes it can't activity, improve the battery core fail safe.In the technical program, volume pin baffle plate and insulation spacer protect the barrier film transverse end surface to avoid being squeezed and damage jointly, have improved the battery core fail safe.Another usefulness of the present invention is, it is closely smooth to reel, and the volume core inner is without obvious space, and after circulation without the bulging phenomenon, therefore do not need a large amount of electrolyte to fill, greatly saved the electrolyte consumption.The electrolyte consumption reduces the security performance that has also improved battery core simultaneously.
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 (6)
1. takeup type square power lithium ion cell, comprise volume core (1), it is characterized in that: baffle plate (5) is installed respectively at the two ends of volume pin (7), baffle plate (5) is provided with lug groove (6), volume core (1) is wrapped on the volume pin (7), lug (3) is drawn in the both sides of volume core (1), and lug (3) passes lug groove (6); The both sides of cover plate are provided with the lug brace, and the lug brace is provided with sulculus, and lug (3) is drawn from the sulculus of lug brace; Described volume core (1) and the cover plate battery case of packing into.
2. a kind of takeup type square power lithium ion cell according to claim 1, it is characterized in that: described volume pin (7) inside is provided with reinforcement (8).
3. a kind of takeup type square power lithium ion cell according to claim 1, it is characterized in that: described volume pin (7) stacks up with volume core (1), volume pin (7) and the both sides installing insulating pads (2) of rolling up core (1), volume pin (7), volume core (1) all change battery case over to insulation spacer (2).
4. a kind of takeup type square power lithium ion cell according to claim 1, it is characterized in that: described lug brace is provided with sulculus, and draw-in groove (4) is drawn from described sulculus.
5. a kind of takeup type square power lithium ion cell according to claim 3 is characterized in that: described insulation spacer (2) is " recessed " font, and its inboard spacing closely cooperates with baffle plate (5) outside of volume pin (7).
6. a kind of takeup type square power lithium ion cell according to claim 1, it is characterized in that: described lug (3) is welded on the diverse location of lug brace.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013100017811A CN103022572A (en) | 2013-01-05 | 2013-01-05 | Winding type square power lithium-ion battery |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013100017811A CN103022572A (en) | 2013-01-05 | 2013-01-05 | Winding type square power lithium-ion battery |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN103022572A true CN103022572A (en) | 2013-04-03 |
Family
ID=47970873
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2013100017811A Pending CN103022572A (en) | 2013-01-05 | 2013-01-05 | Winding type square power lithium-ion battery |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103022572A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104979591A (en) * | 2014-04-11 | 2015-10-14 | 罗伯特·博世有限公司 | Electrochemical Energy Cell, and Rechargeable Battery and also Method for Determining an Electrode Potential of an Electrode of an Electrochemical Energy Storage Cell |
| CN108400370A (en) * | 2018-05-11 | 2018-08-14 | 东莞市安洋智能科技有限公司 | A kind of rolling needle mechanism and winding method of winding rectangular cell |
| CN108496269A (en) * | 2016-11-02 | 2018-09-04 | 株式会社Lg化学 | electrode assembly and method for manufacturing the electrode assembly |
| CN110649328A (en) * | 2019-09-27 | 2020-01-03 | 联动天翼新能源有限公司 | Winding needle, winding type battery cell and production process of winding type battery cell |
| CN112740472A (en) * | 2018-09-28 | 2021-04-30 | 松下知识产权经营株式会社 | Power storage device and power storage module |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6190794B1 (en) * | 1998-03-30 | 2001-02-20 | Renata Ag | Prismatic storage battery or cell with coiled winding |
| CN202127072U (en) * | 2011-06-28 | 2012-01-25 | 力神迈尔斯动力电池系统有限公司 | Large-capacity high-power lithium ion battery |
-
2013
- 2013-01-05 CN CN2013100017811A patent/CN103022572A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6190794B1 (en) * | 1998-03-30 | 2001-02-20 | Renata Ag | Prismatic storage battery or cell with coiled winding |
| CN202127072U (en) * | 2011-06-28 | 2012-01-25 | 力神迈尔斯动力电池系统有限公司 | Large-capacity high-power lithium ion battery |
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104979591A (en) * | 2014-04-11 | 2015-10-14 | 罗伯特·博世有限公司 | Electrochemical Energy Cell, and Rechargeable Battery and also Method for Determining an Electrode Potential of an Electrode of an Electrochemical Energy Storage Cell |
| CN104979591B (en) * | 2014-04-11 | 2018-05-25 | 罗伯特·博世有限公司 | Electrochemical energy storage battery core and accumulator and the method for obtaining its electrode potential |
| CN108496269A (en) * | 2016-11-02 | 2018-09-04 | 株式会社Lg化学 | electrode assembly and method for manufacturing the electrode assembly |
| CN108496269B (en) * | 2016-11-02 | 2021-06-11 | 株式会社Lg化学 | Electrode assembly and method for manufacturing the same |
| CN108400370A (en) * | 2018-05-11 | 2018-08-14 | 东莞市安洋智能科技有限公司 | A kind of rolling needle mechanism and winding method of winding rectangular cell |
| CN112740472A (en) * | 2018-09-28 | 2021-04-30 | 松下知识产权经营株式会社 | Power storage device and power storage module |
| CN112740472B (en) * | 2018-09-28 | 2023-10-24 | 松下知识产权经营株式会社 | Power storage device and power storage module |
| CN110649328A (en) * | 2019-09-27 | 2020-01-03 | 联动天翼新能源有限公司 | Winding needle, winding type battery cell and production process of winding type battery cell |
| CN110649328B (en) * | 2019-09-27 | 2021-06-01 | 联动天翼新能源有限公司 | Winding needle, winding type battery cell and production process of winding type battery cell |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103022572A (en) | Winding type square power lithium-ion battery | |
| CN202495548U (en) | Flexible packaging lithium ion battery | |
| CN101656330A (en) | Method for making lithium-ion battery cells | |
| CN207834497U (en) | Rectangular coiled battery | |
| CN111446480A (en) | Preparation method of battery cell of energy storage device and battery cell | |
| CN105742721A (en) | High-energy-ratio low-internal-resistance cylindrical lithium ion battery | |
| CN109065839A (en) | A kind of full tab positive plate, winding battery core and preparation method thereof | |
| CN203574066U (en) | Lithium ion battery with multi-core structure | |
| CN203085704U (en) | Lithium ion battery | |
| CN102916156B (en) | Multi-winding core quasi-bipolar lug battery and manufacturing method thereof | |
| CN210156503U (en) | Roll up core and lithium ion battery | |
| CN102208679A (en) | Wound continuous laminated square lithium ion power battery | |
| CN102024990A (en) | Method for manufacturing cells of power lithium ion batteries | |
| CN113224393A (en) | Roll core for high-capacity battery, parallel roll core group and high-capacity battery | |
| CN113224392A (en) | Roll core for high-capacity battery, parallel roll core group and high-capacity battery | |
| CN203103445U (en) | Coiled square power lithium ion battery winding needle | |
| CN205828577U (en) | Takeup type battery core | |
| CN101582521B (en) | Coiled lithium-ion secondary battery taking winding needle as positive and negative electrodes and manufacturing method thereof | |
| CN217588983U (en) | Middle lug-outlet type positive plate, battery cell and battery | |
| CN201111307Y (en) | Lithium battery | |
| CN212461774U (en) | Parallel type winding core structure of cylindrical battery | |
| CN205282589U (en) | Lithium battery | |
| CN202695603U (en) | Electrical core structure of square battery | |
| CN202601797U (en) | Quasi-bipolar battery with multiple wound cores and tabs | |
| CN103618068B (en) | Zinc-nickel battery negative plate and preparation method thereof and the zinc-nickel cell that uses this negative plate |
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 |