CN109585928A - Battery core and battery with it - Google Patents
Battery core and battery with it Download PDFInfo
- Publication number
- CN109585928A CN109585928A CN201710910620.2A CN201710910620A CN109585928A CN 109585928 A CN109585928 A CN 109585928A CN 201710910620 A CN201710910620 A CN 201710910620A CN 109585928 A CN109585928 A CN 109585928A
- Authority
- CN
- China
- Prior art keywords
- pole piece
- collector
- battery core
- diaphragm
- battery
- 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
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Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/05—Accumulators with non-aqueous electrolyte
- H01M10/058—Construction or manufacture
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/05—Accumulators with non-aqueous electrolyte
- H01M10/052—Li-accumulators
- H01M10/0525—Rocking-chair batteries, i.e. batteries with lithium insertion or intercalation in both electrodes; Lithium-ion batteries
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/42—Methods or arrangements for servicing or maintenance of secondary cells or secondary half-cells
- H01M10/4235—Safety or regulating additives or arrangements in electrodes, separators or electrolyte
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/10—Energy storage using batteries
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
- Y02P70/50—Manufacturing or production processes characterised by the final manufactured product
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Materials Engineering (AREA)
- Secondary Cells (AREA)
- Battery Electrode And Active Subsutance (AREA)
- Connection Of Batteries Or Terminals (AREA)
Abstract
The invention discloses a kind of battery core and with its battery.The battery core includes: the first diaphragm set gradually, the first pole piece, the second diaphragm and the second pole piece, is configured to positioned at outermost first pole piece and positioned at least one of outermost described second pole piece at least two layers of the collector being in contact with each other.Battery core according to the present invention can satisfy battery puncture resistance requirement, guarantee safety of the battery when encountering metal puncture or hitting.
Description
Technical field
The present invention relates to battery technology fields, in particular to a kind of battery core and the battery with the battery core.
Background technique
Battery in the related technology, especially lithium ion battery, energy density with higher and higher voltage, cannot
Meet battery puncture resistance requirement, there is the risk of explosion on fire, not can guarantee peace of the battery when encountering metal puncture or hitting
Quan Xing.
Summary of the invention
The present invention is directed at least solve one of the technical problems existing in the prior art.For this purpose, the present invention proposes a kind of electricity
Core, the battery core with high security the advantages of.
The present invention also proposes a kind of battery with the battery core.
The battery core of embodiment according to a first aspect of the present invention, comprising: the first diaphragm, the first pole piece, second set gradually
At least one of diaphragm and the second pole piece, be located at outermost first pole piece and be located at outermost second pole piece
It is configured to at least two layers of the collector being in contact with each other.
Battery core according to an embodiment of the present invention, can satisfy battery puncture resistance requirement, guarantee that battery is worn encountering metal
Safety when thorn or shock.
In addition, battery core according to an embodiment of the present invention also has following additional technical characteristic:
According to some embodiments of the present invention, first diaphragm, first pole piece, second diaphragm and described
Two pole pieces are wound into a roll from head end around body, wherein at least one of first pole piece and described second pole piece are located at most
The part of outer ring is configured to have at least two layers of collector.
Further, at least two layers of collector is at least one as described in first pole piece and second pole piece
A end is formed along the circumferential inflection of the coiling body.
Optionally, circumferential inflection complete cycle or half cycle of at least two layers of the collector along the coiling body.
Optionally, at least two layers of collector inflection to the coiling body winding bending part.
In some embodiments of the invention, the end of first pole piece is configured to the first internal layer collection being in contact with each other
Fluid and the first outer layer collector, the first outer layer collector be located at the first internal layer collector and second diaphragm it
Between, the first internal layer collector is between the first outer layer collector and first diaphragm.
In some embodiments of the invention, the end of second pole piece is configured in be in contact with each other second
Layer collector and the second outer layer collector, the second internal layer collector be located at the second outer layer collector and described second every
Between film.
In some embodiments of the invention, the end of first pole piece is configured to the first internal layer collection being in contact with each other
Fluid and the first outer layer collector, the first outer layer collector be located at the first internal layer collector and second diaphragm it
Between, the first internal layer collector between the first outer layer collector and first diaphragm, second pole piece
End is configured to the second internal layer collector and the second outer layer collector being in contact with each other, and the second internal layer collector is located at institute
It states between the second outer layer collector and second diaphragm.
In some embodiments of the invention, the cross section of the coiling body has orthogonal long axis and short
Axis, the length of the long axis are greater than the length of the short axle.
According to some embodiments of the present invention, first pole piece is the copper foil of surface dressing, and second pole piece is table
The aluminium foil of face dressing, non-dressing on the opposite surface of two layers of the collector to contact with each other at least two layers of collector.
According to some embodiments of the present invention, first diaphragm, first pole piece, second diaphragm and described
Two pole pieces stack gradually and collectively form sub- battery core, and the sub- battery core is multiple and is sequentially stacked, the two neighboring sub- battery core
In one first diaphragm adjacent to another second pole piece be arranged, wherein
At least one folding described in positioned at outermost first pole piece and in outermost second pole piece
It folds to form at least two layers of collector.
The battery of embodiment according to a second aspect of the present invention, including electricity described in embodiment according to a first aspect of the present invention
Core.
Battery according to an embodiment of the present invention can satisfy battery puncture resistance and want by utilizing battery core as described above
It asks, safety with higher.
According to some embodiments of the present invention, the battery is lithium ion battery.
Additional aspect and advantage of the invention will be set forth in part in the description, and will partially become from the following description
Obviously, or practice through the invention is recognized.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of battery core according to an embodiment of the present invention；
Fig. 2 is the structural schematic diagram of battery core in accordance with another embodiment of the present invention.
Appended drawing reference:
Battery core 1,
First pole piece 10, the second pole piece 20, the first diaphragm 30, the second diaphragm 40.
Specific embodiment
The embodiment of the present invention is described below in detail, examples of the embodiments are shown in the accompanying drawings, wherein from beginning to end
Same or similar label indicates same or similar element or element with the same or similar functions.Below with reference to attached
The embodiment of figure description is exemplary, and for explaining only the invention, and is not considered as limiting the invention.
Below with reference to the accompanying drawings the battery core 1 of embodiment according to a first aspect of the present invention is described, the battery core 1 is with high security
Advantage.
As depicted in figs. 1 and 2, battery core 1 according to an embodiment of the present invention, including the first diaphragm 30, the first pole piece 10, second
Diaphragm 40 and the second pole piece 20.
Specifically, the first diaphragm 30, the first pole piece 10, the second diaphragm 40 and the second pole piece 20 are set gradually, it is located at most
First pole piece 10 of outer layer and positioned at least one of outermost second pole piece 20 be configured to have be in contact with each other to
Few two layers of collector.
Here, as shown in Figure 1, battery core 1, which can be, rolls battery core, 30 (not shown) of the first diaphragm, the first pole piece 10,
Second diaphragm, 40 (not shown) and the second pole piece 20 wind to form pancake coiling body from head end, that is, the first diaphragm 30,
First pole piece 10, the second diaphragm 40 and the second pole piece 20 are radially successively arranged alternately from the inside to the outside the coiling body, and should
The cross section of coiling body has orthogonal long axis and short axle, and the length of long axis is greater than the length of short axle.
In this way, the part positioned at outmost turns of at least one of the first pole piece 10 and second pole piece 20 is configured to have
At least two layers of collector, the arranged radially of adjacent two layers collector at least two layers of collector along coiling body.
Specifically, at least two layers of collector at least one end as described in the first pole piece 10 and the second pole piece 20
The circumferential inflection along the coiling body is held to form, described at least two layers of collector can be along the circumferential inflection complete cycle of coiling body or half
Week, for example, as shown in Figure 1, at least two layers of collector inflection to coiling body winding bending part.
In some examples of the invention, the first pole piece 10 is the copper foil of surface dressing, and the second pole piece 20 is surface dressing
Aluminium foil, non-dressing on the opposite surface of two layers of the collector to contact with each other at least two layers of collector.
Certainly, at least two layers of collector can also be formed by the non-dressing in surface of above-mentioned copper foil or aluminium foil, that is, afflux
Body refers to the part of the removing coating material of the first pole piece 10 and the second pole piece 20, for example, end to the first pole piece 10 and
The end of second pole piece 20 is not provided with coating material.
It should be noted that " at least two layers of collector " refer in the first pole piece 10 and the second pole piece 20 it is described at least
One has two layers or two layers or more collector.It is appreciated that the collector number of plies and second pole piece 20 of the first pole piece 10
The collector number of plies is independent of one another, is independent of each other, and it is possible to which only the first pole piece 10 or the second pole piece 20 are at least two layers described
Collector, is also possible to the first pole piece 10 and the second pole piece 20 is respectively formed at least two layers of collector.
For example, as shown in Figure 1, the end of the first pole piece 10 be configured to the first internal layer collector being in contact with each other and
First outer layer collector, the first outer layer collector is between the first internal layer collector and the second diaphragm 40, the first internal layer afflux
Body is between the first outer layer collector and the first diaphragm 30.
Here, the end of the first pole piece 10 along coiling body circumferential direction can towards the outside inflection of the first pole piece 10, for example,
The arrow at A in Fig. 1 shows the coiling direction of the first pole piece 10 and the second pole piece 20, and the arrow at B shows the first pole
The inflection direction of the end of piece 10, the end of the first pole piece 10 is clockwise at outside inflection one week to A.Alternatively, the
It the end of one pole piece 10 can also be towards the inside inflection of the first pole piece 10 along the circumferential direction of coiling body.
For another example, the end of the second pole piece 20 is configured to the second internal layer collector and the second outer layer afflux being in contact with each other
Body, the second internal layer collector is between the second outer layer collector and the second diaphragm 40.
Here, the end of the second pole piece 20 along coiling body circumferential direction can towards the outside inflection of the second pole piece 20, alternatively,
It the end of second pole piece 20 can also be towards the inside inflection of the second pole piece 20 along the circumferential direction of coiling body.
It can in any combination, for example, the end of the first pole piece 10 above with respect to the generation type of at least two layers collector
End is configured to the first internal layer collector and the first outer layer collector being in contact with each other, and the first outer layer collector is located at the first internal layer
Between collector and the second diaphragm 40, the first internal layer collector is between the first outer layer collector and the first diaphragm 30, and second
The end of pole piece 20 is configured to the second internal layer collector and the second outer layer collector being in contact with each other, the second internal layer afflux position
Between the second outer layer collector and the second diaphragm 40.Wherein, the inflection direction of the end of the first pole piece 10 and the second pole piece
The inflection direction of 20 end is referred to the related description in above-described embodiment, and details are not described herein.
It should be noted that the description as described in direction "inner", "outside" is relative in battery core 1 in the embodiment of the present invention
For the heart, for example, battery core 1 is that "inner", "outside" when rolling battery core is referred to along "inner" radially, the "outside" of coiling body,
"inner" refers to that the direction towards the center of coiling body, "outside" refer to the direction backwards to the center of coiling body.
Specifically, to rolling for battery core, the outside of the first pole piece 10 refers to the diameter in coiling body of the first pole piece 10
Upwards backwards to coiling body center side, the inside of the first pole piece 10 refer to the first pole piece 10 coiling body radially
The center towards coiling body side；The outside of second pole piece 20 refers to the radially back in coiling body of the second pole piece 20
To the side at the center of coiling body, the inside of the second pole piece 20 refer to second pole piece 20 in coiling body axially towards to volume
Around the side at the center of body.
Similarly, the head end of the first pole piece 10 or the second pole piece 20 refers to the neighbouring of the first pole piece 10 or the second pole piece 20
The end of the one end (i.e. inner end) at the center of coiling body, the first pole piece 10 or the second pole piece 20 refers to the first pole piece 10 or the second
The one end (i.e. outer end) at the center of the separate coiling body of pole piece 20.
Thus, it is possible to realize LTDK (Long Tail Double Kiss) technology, wherein Long Tail refers to end
Collector is lengthened, Double Kiss refers to: causing battery to puncture to rolling battery core and the external force such as do needle thorn or hit
Or fracture safety test when, between the end of the first pole piece 10 (that is, copper foil) and the end of the second pole piece 20 (that is, aluminium foil) into
Row contacts twice.
Alternatively, as shown in Fig. 2, battery core 1 can also be to fold battery core, that is, first to be cascading along the vertical direction
Diaphragm 30, the first pole piece 10, the second diaphragm 40 and the second pole piece 20 can form sub- battery core, sub- battery core can be it is multiple, it is multiple
Sub- battery core is sequentially stacked along the vertical direction, and the first diaphragm 30 of a sub- battery core in two neighboring sub- battery core is adjacent to another height
Second pole piece 20 of battery core.In this way, the first pole piece 10 or the second pole piece 20 of the upper and lower surfaces of neighbouring battery core 1 can be rolled over
It folds to form at least two layers of collector.
It include the upper table of neighbouring battery core 1 positioned at outermost first pole piece 10 in the structure of battery core 1 shown in figure 2
First pole piece 10 of the lower surface of first pole piece 10 in face and neighbouring battery core 1, that is, positioned at the top the first pole piece 10 and be located at
Each of first pole piece 10 of bottom is folded to form at least two layers of collector, at least two layers of collector
Adjacent two layers collector arrange along the vertical direction.
For example, at least two layers of collector includes first lower layer's collector and the first upper layer collector, for positioned at upper
Side at least two layers of collector for, first lower layer's collector between the first upper layer collector and the first diaphragm 30,
For underlying at least two layers of collector, the first upper layer collector be located at first lower layer's collector and second every
Between film 40.Certainly, it is also possible to the second pole piece 20 more adjacent to the upper surface of battery core 1 in the first pole piece 10 and the second pole piece 20
Or lower surface, in this way, at least two layers of collector is formed in the second pole piece 20.
Battery core 1 according to an embodiment of the present invention, by that will be located at outermost first pole piece 10 and be located at outermost the
At least one of two pole pieces 20 are set as having at least two layers of collector, form at least two layers of copper foil and/or at least two layers of aluminium
Foil can increase toughness when copper foil and/or aluminium foil puncture, also, this structure to carry out between copper foil and aluminium foil
It contacts at least twice, to increase the time of repid discharge after battery short circuit to a certain extent, delays the hair of thermal runaway
It is raw, and reduce the risk of thermal runaway.Especially for the higher battery of energy density, the safety of battery can be improved.
In short, battery core 1 according to an embodiment of the present invention, can satisfy battery puncture resistance requirement, guarantee that battery is being met
Safety when to metal puncture or shock.
The battery of embodiment according to a second aspect of the present invention, including battery core described in embodiment according to a first aspect of the present invention
1.For example, battery is lithium ion battery.
Battery according to an embodiment of the present invention is shown below and carries out needle thorn, half needle thorn respectively with battery in the related technology
With the comparison of impact test.
In this contrast test, battery according to an embodiment of the present invention and battery in the related technology are respectively 5, and
It is the lithium ion battery of the high-energy density A model of 4.40V high voltage platform.Wherein, during the test battery it is not on fire,
It does not explode and passes through for test.
Battery according to an embodiment of the present invention can satisfy battery puncture resistance and want by utilizing battery core 1 as described above
It asks, safety with higher.
Other of battery according to an embodiment of the present invention are constituted and are operated for those of ordinary skills all
Be it is known, be not detailed herein.
In the description of the present invention, it is to be understood that, term " center ", " transverse direction ", " thickness ", "upper", "lower",
The orientation or positional relationship of the instructions such as "inner", "outside", " clockwise ", " counterclockwise ", " axial direction ", " radial direction ", " circumferential direction " be based on
Orientation or positional relationship shown in the drawings, is merely for convenience of description of the present invention and simplification of the description, rather than indication or suggestion institute
The device or element of finger must have a particular orientation, be constructed and operated in a specific orientation, therefore should not be understood as to this hair
Bright limitation.In addition, term " first ", " second " are used for description purposes only, it is not understood to indicate or imply relatively important
Property or implicitly indicate the quantity of indicated technical characteristic.Define " first " as a result, the feature of " second " can be expressed or
Person implicitly includes one or more of the features.In the description of the present invention, unless otherwise indicated, the meaning of " plurality " is
Two or more.
In the description of this specification, reference term " one embodiment ", " some embodiments ", " specific embodiment ", " show
The description of example " or " some examples " etc. means particular features, structures, materials, or characteristics described in conjunction with this embodiment or example
It is included at least one embodiment or example of the invention.In the present specification, schematic expression of the above terms are different
Surely identical embodiment or example is referred to.Moreover, particular features, structures, materials, or characteristics described can be any
It can be combined in any suitable manner in one or more embodiment or examples.
Although an embodiment of the present invention has been shown and described, it will be understood by those skilled in the art that: not
A variety of change, modification, replacement and modification can be carried out to these embodiments in the case where being detached from the principle of the present invention and objective, this
The range of invention is defined by the claims and their equivalents.
Claims (13)
1. a kind of battery core characterized by comprising
The first diaphragm, the first pole piece, the second diaphragm and the second pole piece set gradually, be located at outermost first pole piece and
It is configured to positioned at least one of outermost described second pole piece at least two layers of the collector being in contact with each other.
2. battery core according to claim 1, which is characterized in that first diaphragm, first pole piece, described second every
Film and second pole piece are wound into a roll from head end around body, wherein at least one in first pole piece and second pole piece
A part positioned at outmost turns is configured to have at least two layers of collector.
3. battery core according to claim 2, which is characterized in that at least two layers of collector is by first pole piece and institute
At least one the end stated in the second pole piece is formed along the circumferential inflection of the coiling body.
4. battery core according to claim 3, which is characterized in that the circumferential direction of at least two layers of the collector along the coiling body
Inflection complete cycle or half cycle.
5. battery core according to claim 3, which is characterized in that at least two layers of collector inflection to the coiling body
Wind bending part.
6. battery core according to claim 2, which is characterized in that the end of first pole piece was configured to be in contact with each other
First internal layer collector and the first outer layer collector, the first outer layer collector are located at the first internal layer collector and described
Between second diaphragm, the first internal layer collector is between the first outer layer collector and first diaphragm.
7. battery core according to claim 2, which is characterized in that the end of second pole piece was configured to be in contact with each other
Second internal layer collector and the second outer layer collector, the second internal layer collector are located at the second outer layer collector and described
Between second diaphragm.
8. battery core according to claim 2, which is characterized in that the end of first pole piece was configured to be in contact with each other
First internal layer collector and the first outer layer collector, the first outer layer collector are located at the first internal layer collector and described
Between second diaphragm, the first internal layer collector is described between the first outer layer collector and first diaphragm
The end of second pole piece is configured to the second internal layer collector and the second outer layer collector being in contact with each other, the second internal layer collection
Fluid is between the second outer layer collector and second diaphragm.
9. battery core according to claim 2, which is characterized in that the cross section of the coiling body has orthogonal long axis
And short axle, the length of the long axis are greater than the length of the short axle.
10. battery core according to claim 1, which is characterized in that first pole piece is the copper foil of surface dressing, described the
Two pole pieces are the aluminium foil of surface dressing, on the opposite surface of two layers of the collector to contact with each other at least two layers of collector
Non- dressing.
11. battery core according to claim 1, which is characterized in that first diaphragm, first pole piece, described second
Diaphragm and second pole piece stack gradually and collectively form sub- battery core, and the sub- battery core is multiple and is sequentially stacked, adjacent two
One first diaphragm in a sub- battery core is arranged adjacent to another second pole piece, wherein
Described in positioned at outermost first pole piece and in outermost second pole piece at least one fold with
Form at least two layers of collector.
12. a kind of battery, which is characterized in that including battery core described according to claim 1 any one of -11.
13. battery according to claim 12, which is characterized in that the battery is lithium ion battery.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710910620.2A CN109585928A (en) | 2017-09-29 | 2017-09-29 | Battery core and battery with it |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710910620.2A CN109585928A (en) | 2017-09-29 | 2017-09-29 | Battery core and battery with it |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109585928A true CN109585928A (en) | 2019-04-05 |
Family
ID=65919111
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710910620.2A Pending CN109585928A (en) | 2017-09-29 | 2017-09-29 | Battery core and battery with it |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109585928A (en) |
Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2005077085A2 (en) * | 2004-02-11 | 2005-08-25 | Enerdel, Inc. | Lithium polymer battery cell |
| CN101521265A (en) * | 2008-10-10 | 2009-09-02 | 比亚迪股份有限公司 | Power battery pack for electric vehicle and battery system thereof |
| CN202172108U (en) * | 2011-08-26 | 2012-03-21 | 山东齐星新能源科技有限责任公司 | Coiled core structure for lithium ion battery |
| CN202384439U (en) * | 2011-12-29 | 2012-08-15 | 宁德新能源科技有限公司 | Lithium ion battery winding structure |
| CN202550007U (en) * | 2012-02-13 | 2012-11-21 | 深圳格林德能源有限公司 | Coiled lithium polymer battery and positive and negative plate structure thereof |
| CN204155768U (en) * | 2014-09-18 | 2015-02-11 | 山东精工电子科技有限公司 | Low internal resistance current collector of super capacitor |
| CN205723828U (en) * | 2016-06-28 | 2016-11-23 | 宁德新能源科技有限公司 | Takeup type battery core |
| CN205828575U (en) * | 2016-06-28 | 2016-12-21 | 宁德新能源科技有限公司 | Takeup type battery core |
| CN206490135U (en) * | 2016-12-27 | 2017-09-12 | 宁德新能源科技有限公司 | A kind of takeup type battery core |
-
2017
- 2017-09-29 CN CN201710910620.2A patent/CN109585928A/en active Pending
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2005077085A2 (en) * | 2004-02-11 | 2005-08-25 | Enerdel, Inc. | Lithium polymer battery cell |
| CN101521265A (en) * | 2008-10-10 | 2009-09-02 | 比亚迪股份有限公司 | Power battery pack for electric vehicle and battery system thereof |
| CN202172108U (en) * | 2011-08-26 | 2012-03-21 | 山东齐星新能源科技有限责任公司 | Coiled core structure for lithium ion battery |
| CN202384439U (en) * | 2011-12-29 | 2012-08-15 | 宁德新能源科技有限公司 | Lithium ion battery winding structure |
| CN202550007U (en) * | 2012-02-13 | 2012-11-21 | 深圳格林德能源有限公司 | Coiled lithium polymer battery and positive and negative plate structure thereof |
| CN204155768U (en) * | 2014-09-18 | 2015-02-11 | 山东精工电子科技有限公司 | Low internal resistance current collector of super capacitor |
| CN205723828U (en) * | 2016-06-28 | 2016-11-23 | 宁德新能源科技有限公司 | Takeup type battery core |
| CN205828575U (en) * | 2016-06-28 | 2016-12-21 | 宁德新能源科技有限公司 | Takeup type battery core |
| CN206490135U (en) * | 2016-12-27 | 2017-09-12 | 宁德新能源科技有限公司 | A kind of takeup type battery core |
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