CN206992216U - Flexible electrode and flexible battery core - Google Patents
Flexible electrode and flexible battery core Download PDFInfo
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- CN206992216U CN206992216U CN201720364930.4U CN201720364930U CN206992216U CN 206992216 U CN206992216 U CN 206992216U CN 201720364930 U CN201720364930 U CN 201720364930U CN 206992216 U CN206992216 U CN 206992216U
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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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Abstract
The utility model discloses a kind of flexible electrode and flexible battery core.The utility model flexible electrode includes collector and applies the electrode material layer for being located at the collection liquid surface, and the electrode material layer is made up of some segment electrode material layers, has interval between adjacent two segment electrodes material layer.The utility model flexibility battery core includes positive pole and negative pole and the barrier film being laminated between the positive pole and negative pole, just extremely the utility model positive flexible electrode, the negative pole is the utility model negative flexible electrode, and some sections of positive electrode material layers contained by the positive pole are corresponded with some sections of negative electrode material layers contained by the negative pole and set.After the utility model flexible electrode is assembled into battery, the battery for encapsulating formation is made up of the battery cell of sealing section series connection, and because sealing section does not have electrode material, therefore, encapsulating the battery of formation can fold at sealing section, assign cell flexible.
Description
Technical field
The utility model belongs to cell art, relates particularly to a kind of flexible electrode and flexible battery core.
Background technology
With the development of science and technology all kinds of miniaturization of electronic products trend are increasingly bright while electronic product extreme enrichment
It is aobvious.It is such as electric to the critical component in electronic product particularly in fields such as wearable device, medicine equipment, precision instrumentations
Road plate, battery etc. propose higher requirement.
Such as the prevalence with Intelligent worn device, more and more people select Intelligent worn device, but intelligence wearing is set
Standby the defects of structure to be present, wearable device can not install battery in actuated position, cause Intelligent worn device integral battery door
Energy is relatively low.Existing Intelligent worn device is because majority is to be bonded human design, it is necessary to bending anyway, but existing lithium
Ion secondary battery is not bent repeatedly, so as to particularly intelligently be worn because the limitation of battery seriously constrains flexible electronic product
Wear the development of equipment.
Utility model content
The purpose of this utility model is the above-mentioned deficiency for overcoming prior art, there is provided a kind of flexible electrode and containing described
The flexible battery core of flexible electrode, and solve the deficiency that existing lithium rechargeable battery is not bent repeatedly.
In order to realize above-mentioned purpose of utility model, one side of the present utility model, there is provided a kind of flexible electrode.It is described soft
Property electrode include collector and apply to be located at the electrode material layer of the collection liquid surface, the electrode material layer is by some sections of electricity
Pole material layer forms, and has interval between adjacent two segment electrodes material layer.
Preferably, the interval width between the adjacent two segment electrodes material layer is 2-6mm.
Preferably, it is 8-12mm to the width of each segment electrode material layer in some segment electrode material layers.
Preferably, the collector is plus plate current-collecting body, and the electrode material layer is positive electrode material layer.
Specifically, the thickness of the positive electrode material layer of the plus plate current-collecting body one side is 55-120 μm.
Or preferably, the collector is negative current collector, the electrode material layer is negative electrode material layer.
Specifically, the thickness of the negative electrode material layer of the negative current collector one side is 60-140 μm.
A kind of another aspect of the present utility model, there is provided flexible battery core.The flexible battery core include positive pole and negative pole with
And the barrier film between the positive pole and negative pole is laminated in, just extremely the utility model flexible electrode, and the utility model is soft
Collector contained by property electrode is plus plate current-collecting body, and electrode material layer is positive electrode material layer；The negative pole is that the utility model is soft
Property electrode, and the collector contained by the utility model flexible electrode is negative current collector, electrode material layer is negative electrode material layer；And
Some sections of positive electrode material layers contained by the positive pole correspond with some sections of negative electrode material layers contained by the negative pole to be set.
Preferably, the positive pole is at least a piece of, the negative pole at least two panels, and the positive pole, negative pole are alternately laminated, and often
The barrier film is laminated between the adjacent positive pole and negative pole.
Or preferably, the negative pole is at least a piece of, the positive pole at least two panels, and the positive pole, negative pole are alternately laminated, and
It is every to be laminated the barrier film between the adjacent positive pole and negative pole.
Specifically, the thickness of the barrier film is 9-20 μm.
Compared with prior art, contained electrode material layer segmentation painting is located at collector by the utility model flexible electrode
On, and there is interval between adjacent two segment electrodes material layer.So, when by positive pole the utility model flexible electrode and negative pole this reality
Setting is corresponded according to each section of positive electrode material layer with each section of negative electrode material layer be assembled into electricity with novel flexible electrode
Chi Hou, and the interval section contained by both positive and negative polarity and barrier film and housing are formed into sealing section, some sections of positive poles contained by positive pole
Material layer forms battery cell with some sections of negative electrode material layers contained by the negative pole and housing, is packaged the battery formed then
It is to be made up of the battery cell of sealing section series connection, because sealing section does not have electrode material, therefore, encapsulates the electricity of formation
Pond can fold at sealing section, assign cell flexible.
The utility model flexibility battery core is due to being by including positive pole the utility model flexible electrode and negative pole the utility model
Flexible electrode form, so, after the utility model flexibility battery core is encapsulated into battery as requested, encapsulate formation battery have can
With the sealing section of folding, so as to assign cell flexible.
Brief description of the drawings
Fig. 1 is the front view of the utility model embodiment flexible electrode；
Fig. 2 is the front view of the structure of the utility model embodiment flexible electrode one；
Fig. 3 is the front view of another structure of the utility model embodiment flexible electrode；
Fig. 4 is the structural representation of the utility model embodiment flexibility battery core.
Embodiment
In order that the technical problems to be solved in the utility model, technical scheme and beneficial effect are more clearly understood, below
In conjunction with the embodiments, the utility model is further elaborated.It should be appreciated that specific embodiment described herein is only
To explain the utility model, it is not used to limit the utility model.
On the one hand, the utility model embodiment provides a kind of flexible electrode.Flexible electrode structure such as Fig. 1 to 3 institutes
Show, flexible electrode 01 includes collector 1 and applies the electrode material layer 2 for being located at the surface of collector 1.
Wherein, the collector 1 contained by above-mentioned flexible electrode 01 can be collector conventional in field of batteries, such as lithium ion
The conventional collector of battery, can be specifically plus plate current-collecting body or negative current collector.
Electrode material layer 2 contained by above-mentioned flexible electrode 01 is by some segment electrode material layer 2n (n >=2), such as Fig. 1 to 3
Shown in electrode material layer 21, electrode material layer 22, electrode material layer 23,, electrode material layer 2n composition, adjacent two sections of electricity
There is interval between the material layer of pole, interval 11 as shown in Fig. 1 to 3, interval 12, interval 13,, interval 1n compositions.So,
Collector 1 is divided into some sections by some segment electrode material layer 2n, is particularly coated with some segment electrode material layer 2n electricity
Pole material layer section 1n ', as electrode material layer section 11 ', electrode material layer section 12 ', electrode material layer section 13 ',, electricity
Pole material layer section 1n ', and the interval section 1n in adjacent electrode material layer section, such as interval section 11, interval section 12, interval
Section 13,, interval section 1n.
In addition, a kind of structure of electrode material layer 2 described in Fig. 1 to 3 only above-mentioned flexible electrode 01, the electrode material
Preferably be coated with electrode material layer 2 on two relative surfaces of collector 1 forms above-mentioned flexible electrode 01 to the bed of material 2.
In the various embodiments described above, as an embodiment of the present utility model, between the adjacent two segment electrodes material layer
The interval width be 2-6mm.The interval width can assign the battery containing the above-mentioned flexible electrode can be at the interval
Place's bending, assign battery good flexibility.Certainly, the interval width can also be more than 0 less than 2, such to be spaced due to smaller,
After being assembled into flexible battery core and battery, because the section of electrodeless material is smaller, the radian that battery can be allowd to bend is relative
It is smaller.Certainly, the interval width can also be more than 6, and such interval is due to larger, in the case that afflux body length is certain,
After being assembled into flexible battery core and battery, because the section of electrodeless material is larger, although the arc that battery is bent can be allowd
Spend it is relatively large, but can be smaller due to the battery cell quantity containing electrode material layer of assembling so that battery energy density
It is smaller.Therefore, can be according to the battery applications needs of reality, the interval being adjusted between adjacent two segment electrodes material layer
Width so that the existing rational bending amplitude of battery core and battery of assembling has high energy density again.
In another embodiment, it is 8- to the width of each segment electrode material layer in some segment electrode material layers
12mm, the thickness of the electrode material layer can be adjusted according to the capacity and thickness requirement of battery practical application, such as electrode
Material layer can be 55-140 μm.It is controlled by the width to each segment electrode material layer and thickness, it is good assigns battery
Chemical property, such as high-energy-density.
On the basis of the various embodiments described above, above-mentioned flexible electrode 01 can be that positive flexible electrode can also be that negative pole is soft
Property electrode.
In one embodiment, when above-mentioned flexible electrode 01 is the positive flexible electrode 02 in such as Fig. 4, contained by flexible electrode 01
Collector 1 be plus plate current-collecting body 021, such as can be aluminium foil, be such as aluminium foil that thickness is 12-14 μm, naturally it is also possible to be it
The positive current collector material that he commonly uses.Electrode material layer 2 contained by flexible electrode 01 is positive electrode material layer 022.Wherein, it is real one
Apply in example, the thickness of the positive electrode material layer 022 of plus plate current-collecting body one side can be 55-120 μm.In addition, positive electrode material layer 022
And be made up of some sections of positive electrode material layers, there is interval between adjacent two sections of positive electrode material layers.In a particular embodiment, it is described
Positive electrode material layer 022 includes positive electrode active materials, conductive agent, positive electrode binder.It is the positive electrode active materials, conductive agent, just very viscous
The ratio of knot agent content can be the ratio in traditional lithium-ion battery positive-active layer.Wherein, the positive electrode active materials can
With but not just for cobalt acid lithium (such as LC800D), tertiary cathode material (such as PC10), LiFePO4 (such as XC-116), LiMn2O4
At least one of (such as LMO-HB), the positive electrode binder can be with but not just for PVDF (such as HSV-900), acrylate
At least one of (such as LA133), the conductive agent can be with but not just for CNT (CNT-S), conductive carbon black (Super-
At least one of p).
Above-mentioned positive flexible electrode preparation method can be prepared as follows：
Component contained by above-mentioned positive electrode material layer 022 is configured to anode sizing agent, anode sizing agent segmentation painting is located at
On plus plate current-collecting body 021, rolled after follow-up two pairs of rollers to PROCESS FOR TREATMENTs such as process thickness, film-makings.Wherein, the method being coated with
Can be spraying process or transfer coated method etc..
In one embodiment, when above-mentioned flexible electrode 01 is negative flexible electrode 03, the collector 1 contained by flexible electrode 01
It such as can be copper foil for negative current collector 031, be such as copper foil that thickness is 8-10 μm, naturally it is also possible to be that other conventional are born
Pole current collector material.Electrode material layer 2 contained by flexible electrode 01 is negative electrode material layer 032.Wherein, in one embodiment, bear
The thickness of the negative electrode material layer 032 of pole collector one side can be 60-140 μm.If in addition, negative electrode material layer 032 and by
Dry section negative electrode material layer forms, and has interval between adjacent two sections of negative electrode material layers.In a particular embodiment, the negative material
Layer 032 includes negative active core-shell material, conductive agent, negative electrode binder.The negative active core-shell material, conductive agent, negative electrode binder content
Ratio can be ratio in traditional lithium-ion battery negative electrode active layer.Wherein, the negative active core-shell material can with but not only
At least one of only Delanium (HSG), native graphite (such as AMU-1), lithium titanate (such as YL-T104), the negative pole glues
Tie agent but not just for butadiene-styrene latex (such as SD-6156), acrylate (such as LA133), sodium carboxymethylcellulose (such as
CRT3000PA at least one of), the conductive agent but not just for CNT (CNT-S), conductive carbon black (Super-p)
At least one of.
Above-mentioned negative flexible electrode preparation method can be prepared as follows：
Component contained by above-mentioned negative electrode material layer 032 is configured to cathode size, cathode size segmentation painting is located at
On negative current collector 031, rolled after follow-up two pairs of rollers to PROCESS FOR TREATMENTs such as process thickness, film-makings.Wherein, the method being coated with
Can be spraying process or transfer coated method etc..
From the foregoing, contained 2 layers of segmentation painting of electrode material are located on collector 1 by above-mentioned flexible electrode 01 so that
There is interval between adjacent two segment electrodes material layer.So, when by positive flexible electrode 02 and such as Fig. 4 of negative flexible electrode 03
It is shown to be corresponded according to each section of positive electrode material layer and each section of negative electrode material layer after being arranged to battery core, in assembled battery
During the interval section contained by both positive and negative polarity and barrier film and housing formed into sealing section, some sections of positive poles contained by positive pole
Material layer forms battery cell with some sections of negative electrode material layers contained by the negative pole and housing.The final packed electricity formed
Chi Ze is made up of the battery cell of sealing section series connection, and because sealing section does not have electrode material, therefore, encapsulation is formed
Battery can sealing section at fold, assign cell flexible.
On the other hand, on the basis of flexible electrode 01 above, the utility model embodiment additionally provides a kind of flexible electrical
Core.The structure of the flexible battery core as shown in figure 4, the flexible battery core 05 include positive pole 02 and negative pole 03 and be laminated in it is described just
Barrier film 04 between pole and negative pole.
Wherein, positive pole 02 is positive flexible electrode 02 described above, therefore, its structure flexible electrode 01 for example above, its
Some sections of positive electrode material layers 022 for being located at the surface of plus plate current-collecting body 021, and adjacent two are applied including plus plate current-collecting body 021 and segmentation
There is interval between section positive electrode material layer.
Equally, negative pole 03 is negative flexible electrode 03 described above, therefore, its structure flexible electrode 01 for example above, its
Some sections of negative electrode material layers 032 for being located at the surface of negative current collector 031, and adjacent two are applied including negative current collector 031 and segmentation
There is interval between section negative electrode material layer.
Wherein, in the flexible battery core 05 that positive pole 02 and the stacking of negative pole 03 are formed, some sections of positive electrodes contained by positive pole 02
Layer 022 is corresponded with some sections of negative electrode material layers 032 contained by negative pole 03 and set, now, some sections of phases of positive electrode material layer 022
Between between 032 adjacent two section of negative electrode material layer of interval region and some sections of negative electrode material layers between adjacent two sections of positive electrode material layers
Septal area domain also corresponds setting, positive pole 02 and the stratification position relation of negative pole 03 in battery core as shown in Figure 4.
In one embodiment, the flexible battery core 05 in the various embodiments described above can be following structure：
The first, including a piece of positive pole 02 and a piece of negative pole 03, combined between the positive pole 02 and negative pole 03 by being laminated
Barrier film 04 separates.And some sections of positive electrode material layers 022 contained by positive pole 02 and some sections of negative electrode material layers 032 contained by negative pole 03
Correspond and set, now, interval region between 022 adjacent two section of positive electrode material layer of some sections of positive electrode material layers with some sections
Interval region between 032 adjacent two section of negative electrode material layer of negative electrode material layer also corresponds setting.
Second, including at least a piece of positive pole 02 and at least two panels negative pole 03, and positive pole 02, negative pole 03 are alternately laminated, often
Separated between adjacent positive 02 and negative pole 03 by being laminated the barrier film 04 combined.And some sections of positive electrode material layers contained by positive pole 02
022 corresponds setting with some sections of negative electrode material layers 032 contained by negative pole 03, and now, some sections of positive electrode material layers 022 are adjacent
The interval between 032 adjacent two section of negative electrode material layer of interval region and some sections of negative electrode material layers between two sections of positive electrode material layers
Region also corresponds setting.
The third, including at least two panels positive pole 02 and at least a piece of negative pole 03, and positive pole 02, negative pole 03 are alternately laminated, often
Separated between adjacent positive 02 and negative pole 03 by being laminated the barrier film 04 combined.And some sections of positive electrode material layers contained by positive pole 02
022 corresponds setting with some sections of negative electrode material layers 032 contained by negative pole 03, and now, some sections of positive electrode material layers 022 are adjacent
The interval between 032 adjacent two section of negative electrode material layer of interval region and some sections of negative electrode material layers between two sections of positive electrode material layers
Region also corresponds setting.
The barrier film that barrier film 04 in battery core in the various embodiments described above can be commonly used with lithium ion battery, preferably Macromolecule
Glue barrier film, so, when battery core encapsulation when, can directly to 022 adjacent two section of positive electrode material layer of some sections of positive electrode material layers it
Between 032 adjacent two section of negative electrode material layer of interval region and some sections of negative electrode material layers between the direct hot pressing of interval region,
With forming sealing section together with housing.
So, in the battery core in the various embodiments described above, 022 adjacent two section of positive electrode material layer of some sections of positive electrode material layers it
Between 032 adjacent two section of negative electrode material layer of interval region and some sections of negative electrode material layers between interval region also correspond and set
Put, this be in order that above-mentioned battery core must be assembled into battery after, can be by the interval section contained by both positive and negative polarity and barrier film and shell
Body forms sealing section, corresponds and sets to some sections of positive electrode material layers 022 and some sections of negative electrode material layers 032 and barrier film 04
Battery cell is formed with housing.So, the battery for encapsulating formation is made up of the battery cell of sealing section series connection, by
There is no electrode material in sealing section, therefore, encapsulating the battery of formation can fold at sealing section, assign cell flexible.
In conjunction with instantiation, the utility model embodiment flexible electrode and flexible battery core are carried out further specifically
It is bright.
1. flexible positive pole embodiment
Embodiment 11
The present embodiment, which provides a kind of flexible positive pole, includes aluminum foil current collector, and painting is located at aluminium foil surface positive electrode material layer, and
Positive electrode is made up of some sections of positive electrode material layers, has interval between adjacent two sections of positive electrode material layers.Wherein, each section just
The width of pole material layer is 8mm, and thickness is 88-96 μm, and the interval width between adjacent two sections of positive electrode material layers is 4-
5mm。
Positive electrode material layer includes positive electrode, conductive agent and PVDF binding agents, and positive electrode, conductive agent and binding agent
Mass content ratio is 96%：2%：2%.
Embodiment 12
The present embodiment provides a kind of flexible anode structure such as embodiment 11.It includes aluminum foil current collector, and painting is located at aluminium
Paper tinsel surface positive electrode material layer, wherein, the width of each section of positive electrode material layer is 12mm, and thickness is 70-78 μm, adjacent two sections of positive poles
The interval width between material layer is 3-4mm.
Positive electrode material layer includes positive electrode, conductive agent and PVDF binding agents, and positive electrode, conductive agent and binding agent
Mass content ratio is 97.0%：1.2%：1.8%.
Embodiment 13
The present embodiment provides a kind of flexible anode structure such as embodiment 11.It includes aluminum foil current collector, and painting is located at aluminium
Paper tinsel surface positive electrode material layer, wherein, the width of each section of positive electrode material layer is 8mm, and thickness is 79-87 μm, adjacent two sections of positive poles
The interval width between material layer is 5-6mm.
Positive electrode material layer includes positive electrode, conductive agent and PVDF binding agents, and positive electrode, conductive agent and binding agent
Mass content ratio is 96.5%：1.5%：2.0%.
Embodiment 14
The present embodiment provides a kind of flexible anode structure such as embodiment 11.It includes aluminum foil current collector, and painting is located at aluminium
Paper tinsel surface positive electrode material layer, wherein, the width of each section of positive electrode material layer is 6mm, and thickness is 97-105 μm, adjacent two sections of positive poles
The interval width between material layer is 4-5mm.
Positive electrode material layer includes positive electrode, conductive agent and PVDF binding agents, and positive electrode, conductive agent and binding agent
Mass content ratio is 95.5%：2.0%：2.5%.
2. flexible negative pole embodiment
Embodiment 21
The present embodiment, which provides a kind of flexible negative pole, includes copper foil current collector, and painting is located at copper foil surface negative electrode material layer, and
Negative material is made up of some sections of negative electrode material layers, has interval between adjacent two sections of negative electrode material layers.Wherein, bear for each section
The width of pole material layer is 12mm, and thickness is 101~108 μm, and the interval width between adjacent two sections of negative electrode material layers is 2
~3mm.
Negative electrode material layer includes negative material, copper foil, conductive agent and butadiene-styrene latex binding agent and sodium carboxymethylcellulose glues
Agent is tied, and negative material, conductive agent, the mass content ratio of sodium carboxymethylcellulose binding agent and butadiene-styrene latex binding agent are
96%：1.0%：1.2%：1.8%.
Embodiment 22
The present embodiment provides a kind of flexible negative pole structure such as embodiment 21.It includes copper foil current collector, and painting is located at copper
Paper tinsel surface negative electrode material layer, wherein, the width of each section of negative electrode material layer is 14mm, and thickness is 92-100 μm, and adjacent two sections are negative
The interval width between the material layer of pole is 2-3mm.
Negative electrode material layer includes negative material, conductive agent and butadiene-styrene latex binding agent and sodium carboxymethylcellulose binding agent,
And negative material, conductive agent, the mass content ratio of sodium carboxymethylcellulose binding agent and butadiene-styrene latex binding agent are 96.5%：
0.5%：1.2%：1.8%.
Embodiment 23
The present embodiment provides a kind of flexible negative pole structure such as embodiment 21.It includes copper foil current collector, and painting is located at copper
Paper tinsel surface negative electrode material layer, wherein, the width of each section of negative electrode material layer is 10mm, and thickness is 109-117 μm, and adjacent two sections are negative
The interval width between the material layer of pole is 5-6mm.
Negative electrode material layer includes negative material, conductive agent and butadiene-styrene latex binding agent and sodium carboxymethylcellulose binding agent,
And negative material, conductive agent, the mass content ratio of sodium carboxymethylcellulose binding agent and butadiene-styrene latex binding agent are 95.5%：
1.0%：1.4%：2.1%.
Embodiment 24
The present embodiment provides a kind of flexible negative pole structure such as embodiment 21.It includes copper foil current collector, and painting is located at copper
Paper tinsel surface negative electrode material layer, wherein, the width of each section of negative electrode material layer is 8mm, and thickness is 118-126 μm, and adjacent two sections are negative
The interval width between the material layer of pole is 4-5mm.
Negative electrode material layer includes negative material, conductive agent and butadiene-styrene latex binding agent and sodium carboxymethylcellulose binding agent,
And negative material, conductive agent, the mass content ratio of sodium carboxymethylcellulose binding agent and butadiene-styrene latex binding agent are 95.0%：
1.5%：1.5%:：2.5%.
3. flexible battery core embodiment 31-34
By the flexible positive pole provided in embodiment 11 to 14 with the flexible negative pole that is provided in embodiment 21 to 24 in accordance with following
Flexible positive pole and the alternately laminated combination of flexible negative pole are simultaneously distinguished shape by assembling principle in table 1 according to the structural relation shown in Fig. 4
Into flexible battery core embodiment 31 to 34, and it is laminated gelatin membrane between adjacent flexible positive pole and flexible negative pole and separates both,
Form flexible battery core.Wherein, in the present embodiment flexibility battery core, contained by some sections of positive electrode material layers and negative pole contained by positive pole
Some sections of negative electrode material layers, which correspond, to be set, while the interval between the adjacent two sections of positive electrode material layers of some sections of positive electrode material layers
Interval region between the two sections of negative electrode material layers adjacent with some sections of negative electrode material layers of region also corresponds setting, in order to incite somebody to action
During the present embodiment battery core assembled battery, the interval section contained by both positive and negative polarity and barrier film and housing are pressed and to form seal area
Between, some sections of positive electrode material layers contained by positive pole form battery with some sections of negative electrode material layers contained by the negative pole and housing
Monomer.So, the battery for encapsulating formation is made up of the battery cell of sealing section series connection, because sealing section does not have
Electrode material, therefore, encapsulating the battery of formation can fold at sealing section, assign cell flexible.
Table 1
The battery core that above-described embodiment 31 to embodiment 34 provides both had had preferably bending amplitude, and also had with relative
Higher energy density.
Preferred embodiment of the present utility model is the foregoing is only, it is all at this not to limit the utility model
All any modification, equivalent and improvement made within the spirit and principle of utility model etc., should be included in the utility model
Protection domain within.
Claims (10)
1. a kind of flexible electrode, including collector and painting are located at the electrode material layer of the collection liquid surface, it is characterised in that：Institute
State electrode material layer to be made up of some segment electrode material layers, there is interval between adjacent two segment electrodes material layer.
2. flexible electrode according to claim 1, it is characterised in that：It is described between the adjacent two segment electrodes material layer
Interval width is 2-6mm.
3. flexible electrode according to claim 1 or 2, it is characterised in that：To each in some segment electrode material layers
The width of segment electrode material layer is 8-12mm.
4. flexible electrode according to claim 1 or 2, it is characterised in that：The collector is plus plate current-collecting body, the electricity
Pole material layer is positive electrode material layer.
5. flexible electrode according to claim 4, it is characterised in that：The positive electrode of the plus plate current-collecting body one side
The thickness of layer is 55-120 μm.
6. flexible electrode according to claim 1 or 2, it is characterised in that：The collector is negative current collector, the electricity
Pole material layer is negative electrode material layer.
7. flexible electrode according to claim 6, it is characterised in that：The negative electrode material layer of the negative current collector one side
Thickness is 60-140 μm.
8. a kind of flexible battery core, including positive pole and negative pole and the barrier film that is laminated between the positive pole and negative pole, its feature exist
In：The flexible electrode containing positive electrode material layer just extremely described in claim 4, the negative pole are described in claim 6
The flexible electrode containing negative electrode material layer, and if contained by some sections of positive electrode material layers contained by the positive pole and the negative pole
Dry section negative electrode material layer, which corresponds, to be set.
9. flexible battery core according to claim 8, it is characterised in that：The positive pole is at least a piece of, the negative pole at least two
Piece, and the positive pole, negative pole are alternately laminated, and often it is laminated the barrier film between the adjacent positive pole and negative pole；Or
The negative pole is at least a piece of, the positive pole at least two panels, and the positive pole, negative pole are alternately laminated, and per it is adjacent it is described just
The barrier film is laminated between pole and negative pole.
10. according to any described flexible battery cores of claim 8-9, it is characterised in that：The thickness of the barrier film is 9-20 μm.
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| CN201720364930.4U CN206992216U (en) | 2017-04-07 | 2017-04-07 | Flexible electrode and flexible battery core |
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| CN201720364930.4U CN206992216U (en) | 2017-04-07 | 2017-04-07 | Flexible electrode and flexible battery core |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107240671A (en) * | 2017-04-07 | 2017-10-10 | 深圳市优特利电源有限公司 | Flexible electrode and flexible battery core |
| WO2021027743A1 (en) * | 2019-08-13 | 2021-02-18 | 宁德时代新能源科技股份有限公司 | Negative electrode pole piece, lithium-ion battery and apparatus |
| CN112652802A (en) * | 2020-12-30 | 2021-04-13 | 蜂巢能源科技有限公司 | Lamination device |
-
2017
- 2017-04-07 CN CN201720364930.4U patent/CN206992216U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107240671A (en) * | 2017-04-07 | 2017-10-10 | 深圳市优特利电源有限公司 | Flexible electrode and flexible battery core |
| WO2021027743A1 (en) * | 2019-08-13 | 2021-02-18 | 宁德时代新能源科技股份有限公司 | Negative electrode pole piece, lithium-ion battery and apparatus |
| CN112652802A (en) * | 2020-12-30 | 2021-04-13 | 蜂巢能源科技有限公司 | Lamination device |
| CN112652802B (en) * | 2020-12-30 | 2022-12-13 | 蜂巢能源科技有限公司 | Lamination device |
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