CN208738378U - Battery roll core and energy storage device - Google Patents
Battery roll core and energy storage device Download PDFInfo
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- CN208738378U CN208738378U CN201821181838.5U CN201821181838U CN208738378U CN 208738378 U CN208738378 U CN 208738378U CN 201821181838 U CN201821181838 U CN 201821181838U CN 208738378 U CN208738378 U CN 208738378U
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- pole piece
- diaphragm
- roll core
- battery roll
- strip
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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
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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
- 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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Abstract
The utility model discloses a kind of battery roll core and energy storage devices.The battery roll core is wound by the lamination that the compounded plate of the first pole piece of strip and strip is constituted and is formed, the compounded plate includes opposite polarity second pole piece with body and multiple polarity and first pole piece of strip, this has multiple independently spaced encapsulated spaces with body, and multiple second pole pieces are packaged in multiple encapsulated spaces correspondingly.So, after first pole piece and compounded plate stacking winding, even if the relative position between first pole piece and the compounded plate is changed, it will not cause the dislocation between first pole piece and second pole piece, in this way, the battery roll core fundamentally solves the problems, such as that the positive and negative plate in battery roll core in the prior art is easy dislocation, security risk is reduced, do not have to take time positioning pole piece and diaphragm in production process, can significantly promote the production efficiency of battery roll core.
Description
Technical field
The utility model relates to technical field of energy storage, and in particular to battery roll core and energy storage device.
Background technique
New energy energy storage device mainly includes the devices such as lithium ion battery, supercapacitor and mixed capacitor, structure
Mainly it is made of core, connector and shell.By taking lithium ion battery as an example comprising battery roll core, the battery roll core mainly by
Positive diaphragm, cathode membrane and isolation film composition, are finally sealed to form with packaging bag again.However, with lithium ion battery
Energy density is higher and higher, and the security performance of lithium ion battery is deteriorated.When lithium battery by external ABNORMAL STRESS (such as fall,
Hit, squeeze etc.) when, battery roll core can generate acute up and down inside packaging bag between play namely battery roll core and packaging bag
Strong friction to be easy to cause isolation film fold, stretching or damaged, while being also easy to that positive and negative anodes diaphragm is made to misplace, lead
Cause the short circuit of positive and negative anodes diaphragm.
Utility model content
Technical problem to be solved in the utility model is that in view of the above-mentioned problems existing in the prior art, providing one kind can
The battery roll core for effectivelying prevent positive and negative plate to misplace, meanwhile, a kind of energy storage device with the battery roll core is also provided.
The technical scheme adopted by the utility model to solve the technical problem is as follows: a kind of battery roll core is provided, the battery
Core is wound by the lamination that the compounded plate of the first pole piece of strip and strip is constituted and is formed, and the compounded plate includes length
Opposite polarity second pole piece with body and multiple polarity and first pole piece of bar shaped, the band body have between multiple independences
The encapsulated space separated, multiple second pole pieces are packaged in multiple encapsulated spaces correspondingly.
In above-mentioned battery roll core, since multiple second pole pieces are to be packaged in multiple encapsulation skies correspondingly
In, and multiple encapsulated spaces are mutually indepedent and separate, that is to say, that multiple second pole pieces are intervals
Be fixed on it is described on body, meanwhile, first pole piece is strip, therefore, in first pole piece and the combination
After piece stacking winding, even if the relative position between first pole piece and the compounded plate is changed, it will not cause
Dislocation between first pole piece and second pole piece, in this way, the battery roll core fundamentally solves the prior art
In battery roll core in positive and negative plate the problem of being easy dislocation, reduce security risk, it is fixed not have in production process take time
Position pole piece and diaphragm, can significantly promote the production efficiency of battery roll core.
A kind of improvement project of battery roll core as the utility model, it is described with body include strip the first diaphragm and
The second diaphragm of strip for being laminated and being fixed on first diaphragm, multiple encapsulated spaces be formed in described first every
Between film and second diaphragm.
A kind of improvement project of battery roll core as the utility model, it is described with body include strip the first diaphragm and
The linear stacking at multiple intervals and the second diaphragm being fixed on first diaphragm, the quantity of second diaphragm with it is described
The quantity of encapsulated space is consistent, each described encapsulated space be both formed in second diaphragm and first diaphragm it
Between.
A kind of improvement project of battery roll core as the utility model, multiple encapsulated spaces are equally spaced.
A kind of improvement project of battery roll core as the utility model, the base of first pole piece and second pole piece
Bottom is respectively copper foil and aluminium foil.
A kind of improvement project of battery roll core as the utility model, the base of first pole piece and second pole piece
Bottom is corrosive aluminum foil.
A kind of improvement project of battery roll core as the utility model is coated in the substrate of first pole piece
LiFeO4、LiMnO4、NCM、NCA、LiCO2With one of lithium-rich manganese base oxide or a variety of, in the substrate of second pole piece
Coated with one of graphite, silicon-carbon and lithium titanate.
A kind of improvement project of battery roll core as the utility model, the base of first pole piece and second pole piece
Active carbon is coated on bottom.
A kind of improvement project of battery roll core as the utility model, the base of first pole piece and second pole piece
One of graphite, lithium titanate, active carbon and transition metal oxide are coated on bottom.
The utility model additionally provides a kind of energy storage device, and the energy storage device includes shell and the upper battery winding
Core, the battery roll core are placed in the shell.
Implement battery roll core provided by the utility model, can achieve following the utility model has the advantages that the battery roll core is by strip
The lamination that first pole piece of shape and the compounded plate of strip are constituted is wound to be formed, and the compounded plate includes the band body of strip
It is described that there are multiple independently spaced encapsulation with body with opposite polarity second pole piece of multiple polarity and first pole piece
Space, multiple second pole pieces are packaged in multiple encapsulated spaces correspondingly.In above-mentioned battery roll core, due to more
A second pole piece is to be packaged in multiple encapsulated spaces correspondingly, and multiple encapsulated spaces are mutual
It independence and separating, that is to say, that multiple second pole pieces are that being fixed on for interval is described on body, meanwhile, described the
One pole piece is strip, therefore, first pole piece and the compounded plate stacking winding after, even if first pole piece and
Relative position between the compounded plate is changed, and will not be caused between first pole piece and second pole piece
Dislocation, in this way, the battery roll core, which fundamentally solves the positive and negative plate in battery roll core in the prior art, is easy dislocation
The problem of, security risk is reduced, does not have to take time positioning pole piece and diaphragm in production process, can significantly promote battery winding
The production efficiency of core.
Detailed description of the invention
Fig. 1 is the schematic diagram of battery roll core in the utility model first embodiment；
Fig. 2 is the schematic diagram of the first pole piece in the utility model first embodiment；
Fig. 3 is the schematic diagram of compounded plate in the utility model first embodiment；
Fig. 4 is the schematic diagram of compounded plate in the utility model fourth embodiment.
The drawing reference numeral of specific embodiment illustrates:
| First pole piece | 1 | Compounded plate | 2 |
| Band body | 21 | Second pole piece | 22 |
| Encapsulated space | 211 | First diaphragm | 212 |
| Second diaphragm | 213 |
Specific embodiment
For a clearer understanding of the technical features, objectives and effects of the utility model, now control attached drawing is detailed
Illustrate specific embodiment of the present utility model.Obviously, the described embodiments are only a part of the embodiments of the utility model,
Instead of all the embodiments.Based on the embodiments of the present invention, those of ordinary skill in the art are not making creation
Property labour under the premise of every other embodiment obtained, fall within the protection scope of the utility model.
Embodiment one
A kind of lithium ion battery is present embodiments provided, the lithium ion battery includes shell and is built in the shell
Battery roll core.Lithium-ion battery electrolytes are also injected in the shell.
The battery roll core is by the first pole piece 1 (referring to fig. 2) of strip and compounded plate 2 (referring to Fig. 3) structure of strip
At lamination be wound and to be formed, the compounded plate 2 includes strip with body 21 and multiple polarity and first pole piece 1
Opposite polarity second pole piece 22, it is described that there are multiple encapsulated spaces 211 being independently equally spaced with body 21, multiple described the
Two pole pieces 22 are packaged in multiple encapsulated spaces 211 correspondingly (referring to Fig. 1).Specifically, the band body 21 includes length
First diaphragm 212 of bar shaped and the linear stacking at multiple intervals and the second diaphragm being fixed on first diaphragm 212
213, the quantity of second diaphragm 213 is consistent with the quantity of the encapsulated space 211, each described encapsulated space 211 is
It is formed between second diaphragm 213 and first diaphragm 212.
In the present embodiment, the polarity of second pole piece 22 is anode, width 125mm, length 190mm.It is described
The substrate of second pole piece 22 is aluminium foil or utter misery aluminium foil, is coated in the substrate of second pole piece 22 by cobalt acid lithium, conductive agent, is glued
The active material tying agent mixed slurry and forming.In other embodiments, LiFeO4, LiMnO can be used4、NCM、NCA、LiCO2
The cobalt acid lithium in the present embodiment is substituted with one or more in lithium-rich manganese base oxide.It is to be understood that NCM refers to nickel cobalt
LiMn2O4, NCA refer to nickel cobalt lithium aluminate.
In the present embodiment, the polarity of first pole piece 1 is cathode, and width 128mm, length is then described second
The length several times of pole piece 22.The substrate of first pole piece 1 is copper foil or utter misery copper foil, in the substrate of first pole piece 1
Coating is by graphite, conductive agent, binder mixed slurry and the active material formed.In other embodiments, can with silicon-carbon or
Lithium titanate substitutes the graphite in the present embodiment.
In the present embodiment, first diaphragm 212 and second diaphragm 213 are all made of polymer P P/PE/PP diaphragm,
The width of first diaphragm 212 is 130mm, length is slightly longer than the length of first pole piece 1, second diaphragm 213
Width be 128mm, length is 200mm with described in guaranteeing to be formed between second diaphragm 213 and first diaphragm 212
Encapsulated space 211 can store second pole piece 22 just.In other embodiments, first diaphragm 212 and institute
Stating the second diaphragm 213 can also be using PE diaphragm, PP diaphragm, PP the or PE diaphragm of modification or cellulosic separator etc..
To sum up, implement lithium ion battery provided in this embodiment can achieve it is following the utility model has the advantages that due to multiple described
Two pole pieces 22 are to be packaged in multiple encapsulated spaces 211 correspondingly, and multiple encapsulated spaces 211 are mutual
It independence and separating, that is to say, that multiple second pole pieces 22 are that being fixed on for interval is described on body 21, meanwhile, institute
Stating the first pole piece 1 is strip, therefore, after first pole piece 1 and the stacking winding of the compounded plate 2, even if described the
Relative position between one pole piece 1 and the compounded plate 2 is changed, and first pole piece 1 and described will not be caused
Dislocation between two pole pieces 22, in this way, the battery roll core fundamentally solve in battery roll core in the prior art just,
Negative electrode tab is easy the problem of dislocation, reduces security risk, does not have to take time positioning pole piece and diaphragm, Ke Yi great in production process
The production efficiency of amplitude promotion battery roll core.
Embodiment two
A kind of supercapacitor is present embodiments provided, the supercapacitor includes shell and is built in the shell
Battery roll core.Electrolytic solution for super capacitor is also injected in the shell.
The structure of the battery roll core can be found in the structure of the battery roll core in embodiment one, can-Fig. 3 referring to Fig.1,
It is wound and is formed by the lamination that the compounded plate 2 of the first pole piece 1 of strip and strip is constituted, the compounded plate 2 includes length
Opposite polarity second pole piece 22 with body 21 and multiple polarity and first pole piece 1 of bar shaped, the band body 21 have more
A encapsulated space 211 being independently equally spaced, multiple second pole pieces 22 are packaged in multiple encapsulation correspondingly
Space 211.Specifically, the linear stacking and fixation of first diaphragm 212 with body 21 including strip and multiple intervals
In the second diaphragm 213 on first diaphragm 212, the quantity of the quantity of second diaphragm 213 and the encapsulated space 211
Unanimously, each described encapsulated space 211 is both formed between second diaphragm 213 and first diaphragm 212.
In the present embodiment, the polarity of second pole piece 22 is cathode, width 200mm, length 210mm.It is described
The substrate of second pole piece 22 is corrosive aluminum foil or utter misery corrosive aluminum foil, in the substrate of second pole piece 22 coating by active carbon,
Conductive agent, binder mixed slurry and the active material formed.
In the present embodiment, the polarity of first pole piece 1 is anode, and width 200mm, length is then described second
The length several times of pole piece 22.The substrate of first pole piece 1 is corrosive aluminum foil or utter misery corrosive aluminum foil, first pole piece 1
Substrate on coating by active carbon, conductive agent, binder mixed slurry and the active material formed.
In the present embodiment, first diaphragm 212 and second diaphragm 213 are all made of cellulosic separator, and described first
The width of diaphragm 212 is 215mm, length is slightly longer than the length of first pole piece 1, and the width of second diaphragm 213 is
210mm, length are 220mm to guarantee the encapsulated space formed between second diaphragm 213 and first diaphragm 212
211 can store second pole piece 22 just.
Embodiment three
Present embodiments provide a kind of lithium ion mixed capacitor, the lithium ion mixed capacitor includes shell and built-in
In the intracorporal battery roll core of the shell.Lithium ion mixed capacitor electrolyte is also injected in the shell.
The structure of the battery roll core can be found in the structure of the battery roll core in embodiment one, can-Fig. 3 referring to Fig.1,
It is wound and is formed by the lamination that the compounded plate 2 of the first pole piece 1 of strip and strip is constituted, the compounded plate 2 includes length
Opposite polarity second pole piece 22 with body 21 and multiple polarity and first pole piece 1 of bar shaped, the band body 21 have more
A encapsulated space 211 being independently equally spaced, multiple second pole pieces 22 are packaged in multiple encapsulation correspondingly
Space 211.Specifically, the linear stacking and fixation of first diaphragm 212 with body 21 including strip and multiple intervals
In the second diaphragm 213 on first diaphragm 212, the quantity of the quantity of second diaphragm 213 and the encapsulated space 211
Unanimously, each described encapsulated space 211 is both formed between second diaphragm 213 and first diaphragm 212.
In the present embodiment, the polarity of second pole piece 22 is anode, width 85mm, length 140mm.Described
The substrate of two pole pieces 22 is corrosive aluminum foil or utter misery corrosive aluminum foil, and coating is by nickel cobalt mangaic acid in the substrate of second pole piece 22
Lithium, conductive agent, binder mixed slurry and the active material formed.In other embodiments, graphite, lithium titanate or work can be used
Property charcoal substitutes the nickle cobalt lithium manganate in the present embodiment.
In the present embodiment, the polarity of first pole piece 1 is anode, and width 88mm, length is then described second
The length several times of pole piece 22.The substrate of first pole piece 1 is corrosive aluminum foil or utter misery corrosive aluminum foil, first pole piece 1
Substrate on coating by active carbon, conductive agent, binder mixed slurry and the active material formed.In other embodiments, may be used
To substitute the active carbon in the present embodiment with graphite, lithium titanate or transition metal oxide (for example, nickle cobalt lithium manganate).
In the present embodiment, first diaphragm 212 and second diaphragm 213 are all made of PE diaphragm, first diaphragm
212 width is the length that 100mm, length are slightly longer than first pole piece 1, the width of second diaphragm 213 be 95mm,
Length is 150mm to guarantee that the encapsulated space 211 formed between second diaphragm 213 and first diaphragm 212 is proper
Second pole piece 22 can be stored well.
Example IV
A kind of lithium ion battery is present embodiments provided, is that the structure with body 21 is different from the difference of embodiment one.
Specifically, referring to fig. 4, in the present embodiment with body 21 includes the first diaphragm 212 of strip and is laminated and is fixed on described the
Second diaphragm 213 of the strip on one diaphragm 212, multiple encapsulated spaces 211 are formed in first diaphragm 212 and institute
It states between the second diaphragm 213.
In the present embodiment, first diaphragm 212 and second diaphragm 213 are all made of polymer P P/PE/PP diaphragm,
First diaphragm 212 is consistent with the size of second diaphragm 213, and width 130mm, length are slightly longer than first pole
The length of piece 1, first diaphragm 212 are aligned with second diaphragm 213 and knot are laminated together, multiple second pole pieces
22 it is equally spaced be arranged between first diaphragm 212 and second diaphragm 213, herein, first diaphragm 212 with
The region where second pole piece 22 between second diaphragm 213 is the encapsulated space 211.The encapsulated space
First diaphragm 212 and second diaphragm 213 at 211 two sides are connected to a fixed, to prevent second pole piece 22
Deviate the corresponding encapsulated space 211.
The embodiments of the present invention are described above in conjunction with attached drawing, but the utility model is not limited to
The specific embodiment stated, the above mentioned embodiment is only schematical, rather than restrictive, this field it is common
Technical staff is not departing from the utility model aims and scope of the claimed protection situation under the enlightenment of the utility model
Under, many forms can be also made, these are belonged within the protection of the utility model.
Claims (10)
1. a kind of battery roll core, which is characterized in that the battery roll core is by the first pole piece of strip and the compounded plate of strip
The lamination of composition is wound to be formed, and the compounded plate includes the pole with body and multiple polarity and first pole piece of strip
Property opposite the second pole piece, described have multiple independently spaced encapsulated spaces with body, and multiple second pole pieces one are a pair of
That answers is packaged in multiple encapsulated spaces.
2. battery roll core according to claim 1, which is characterized in that described includes the first diaphragm and layer of strip with body
The second diaphragm of strip folded and be fixed on first diaphragm, multiple encapsulated spaces are formed in first diaphragm
Between second diaphragm.
3. battery roll core according to claim 1, which is characterized in that described with body includes the first diaphragm of strip and more
The linear stacking at a interval and the second diaphragm being fixed on first diaphragm, the quantity and the envelope of second diaphragm
The quantity for filling space is consistent, each described encapsulated space be both formed in second diaphragm and first diaphragm it
Between.
4. battery roll core described in any one of -3 according to claim 1, which is characterized in that between multiple described encapsulated spaces etc.
It is arranged every ground.
5. battery roll core described in any one of -3 according to claim 1, which is characterized in that the substrate of first pole piece is
Copper foil or utter misery copper foil, the substrate of second pole piece are aluminium foil or utter misery aluminium foil.
6. battery roll core described in any one of -3 according to claim 1, which is characterized in that first pole piece and described
The substrate of two pole pieces is corrosive aluminum foil or utter misery corrosive aluminum foil.
7. battery roll core described in any one of -3 according to claim 1, which is characterized in that in the substrate of first pole piece
Coated with LiFeO4、LiMnO4、NCM、NCA、LiCO2One of with lithium-rich manganese base oxide, in the substrate of second pole piece
Coated with one of graphite, silicon-carbon and lithium titanate.
8. battery roll core described in any one of -3 according to claim 1, which is characterized in that first pole piece and described
Active carbon is coated in the substrate of two pole pieces.
9. battery roll core described in any one of -3 according to claim 1, which is characterized in that first pole piece and described
One of graphite, lithium titanate, active carbon and transition metal oxide are coated in the substrate of two pole pieces.
10. a kind of energy storage device, which is characterized in that the battery winding including shell and as described in any one of claim 1-9
Core, the battery roll core are placed in the shell.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821181838.5U CN208738378U (en) | 2018-07-25 | 2018-07-25 | Battery roll core and energy storage device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821181838.5U CN208738378U (en) | 2018-07-25 | 2018-07-25 | Battery roll core and energy storage device |
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| Publication Number | Publication Date |
|---|---|
| CN208738378U true CN208738378U (en) | 2019-04-12 |
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ID=66026892
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821181838.5U Active CN208738378U (en) | 2018-07-25 | 2018-07-25 | Battery roll core and energy storage device |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110767944A (en) * | 2018-07-25 | 2020-02-07 | 深圳长城开发科技股份有限公司 | Battery roll core and energy storage device |
| CN114069025A (en) * | 2021-11-17 | 2022-02-18 | 珠海冠宇电池股份有限公司 | Roll up core structure and battery |
-
2018
- 2018-07-25 CN CN201821181838.5U patent/CN208738378U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110767944A (en) * | 2018-07-25 | 2020-02-07 | 深圳长城开发科技股份有限公司 | Battery roll core and energy storage device |
| CN114069025A (en) * | 2021-11-17 | 2022-02-18 | 珠海冠宇电池股份有限公司 | Roll up core structure and battery |
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