CN207818780U - Collector, pole piece and battery - Google Patents
Collector, pole piece and battery Download PDFInfo
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- CN207818780U CN207818780U CN201820257450.2U CN201820257450U CN207818780U CN 207818780 U CN207818780 U CN 207818780U CN 201820257450 U CN201820257450 U CN 201820257450U CN 207818780 U CN207818780 U CN 207818780U
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- collector
- stress relief
- conductive layer
- insulating layer
- relief hole
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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
This application involves a kind of technical field of energy storage more particularly to collector, pole piece and batteries.The collector includes insulating layer and conductive layer, and the conductive layer lamination is set to the opposite sides of the insulating layer in a thickness direction, and the collector is provided through multiple stress relief holes of the conductive layer and the insulating layer.The technical solution by being arranged the stress relief hole through conductive layer and insulating layer on a current collector, in follow-up cold pressure procedure, the stress between conductive layer and insulating layer can be made to be discharged at stress relief hole, the stress between conductive layer and insulating layer is avoided to be more than the cohesive force between conductive layer and insulating layer, the case where to be effectively improved collector demoulding, i.e.,：The case where alleviating conductive layer and insulating layer separation, improves the stability in use of collector.
Description
Technical field
This application involves technical field of energy storage more particularly to a kind of collector, pole piece, batteries.
Background technology
With the development of modern society, mobile phone, video camera, laptop, portable DVD player, digital camera etc. are consumer
Electronic product and electric vehicle, which have, to be more and more widely used, and while they are used widely, user closes it
The performance requirement of key member battery is also higher and higher.
Currently, in order to improve the performance of battery, it is proposed that a kind of composite current collector, the composite current collector include insulating layer
And the conductive layer of covering on the insulating layer, but in follow-up cold pressure procedure, since insulating layer and conductive layer cold pressing elongation percentage differ
Sample is easy to cause collector and stripping phenomenon occurs, i.e.,：The case where being susceptible to conductive layer and insulating layer separation, reduces afflux
Body stability in use.
Utility model content
This application provides a kind of collector, pole piece and battery, the case where collector demoulding can be effectively improved, collection is improved
The stability in use of fluid.
The application first aspect provides a kind of collector comprising：Insulating layer and conductive layer, the conductive layer lamination are set
It is placed in the opposite sides of the insulating layer in a thickness direction, the collector is provided through the conductive layer and the insulation
Multiple stress relief holes of layer.
Preferably, the stress relief hole includes through the first hole of the conductive layer and through the second of the insulating layer
Hole, first hole is connected to second hole and the contour line of the two overlaps.
Preferably, the axis direction of the stress relief hole is parallel with the thickness direction of the collector.
Preferably, the stress relief hole is uniformly arranged in array,
The line direction of each stress relief hole is the width direction of the collector, and column direction is the length of the collector
Direction is spent, or
The width direction of the line direction and the collector of each stress relief hole is obliquely installed, each stress release
The column direction in hole and the length direction of the collector are obliquely installed.
Preferably,
Spacing in stress relief hole described in each row between the two neighboring stress relief hole is 0.2mm~1mm；With/
Or
It is 0.2mm~1mm respectively to arrange the spacing in the stress relief hole between the two neighboring stress relief hole.
Preferably, the porosity of the collector is 0.02%~2%, and the porosity is each stress relief hole
The ratio of the sum of area and the gross area of the collector.
Preferably, the thickness of the insulating layer is 7um~15um.
Preferably, the thickness of the conductive layer is 2um~10um.
The application second aspect provides a kind of pole piece comprising collector described in any one of the above embodiments.
The application third aspect provides a kind of battery comprising pole piece described above.
Technical solution provided by the present application can reach following advantageous effect：
Collector provided herein, by the way that the stress release through conductive layer and insulating layer is arranged on a current collector
Hole can be such that the stress between conductive layer and insulating layer is discharged at stress relief hole, avoid conductive layer in follow-up cold pressure procedure
Stress between insulating layer is more than the cohesive force between conductive layer and insulating layer, to be effectively improved the feelings of collector demoulding
Condition, i.e.,：The case where alleviating conductive layer and insulating layer separation, improves the stability in use of collector.
It should be understood that above general description and following detailed description is merely exemplary, this can not be limited
Application.
Description of the drawings
The partial schematic diagram for the collector that Fig. 1 is provided by the application one embodiment；
The partial schematic diagram for the collector that Fig. 2 is provided by the application another embodiment；
The schematic cross-sectional view of the part for the collector that Fig. 3 is provided by the embodiment of the present application；
The schematic diagram that Fig. 4 is cold-pressed by the pole piece that the embodiment of the present application provides through cold pressing roller.
Reference numeral：
10- collectors；
12- stress relief holes；
The first holes 12a-；
The second holes 12b-；
14- insulating layers；
16- conductive layers；
18- active material layers；
20- cold pressing rollers.
The drawings herein are incorporated into the specification and forms part of this specification, and shows the implementation for meeting the application
Example, and the principle together with specification for explaining the application.
Specific implementation mode
It is described in further detail below by specific embodiment and in conjunction with attached drawing to the application.
As shown in Figures 1 to 4, the embodiment of the present application provides a kind of collector 10, which is applied to make electricity
In the pole piece in pond, which can be anode pole piece or cathode pole piece.
Specifically, which is composite current collector comprising insulating layer 14 and conductive layer 16, the lamination of conductive layer 16 are set
It is placed in the opposite sides of insulating layer 14 in a thickness direction, wherein insulating layer 14 can be used high molecular material and be made, the height
Molecular material can be polyamide (Polyamide, abbreviation PA), polyester terephthalate (Polyethylene
Terephthalate, abbreviation PET), polyimides (Polyimide, abbreviation PI), polyethylene (Polyethylene, referred to as
PE), polypropylene (Polypropylene, abbreviation PP), polystyrene (Polystyrene, abbreviation PS), polyvinyl chloride
(Polyvinyl chloride, abbreviation PVC), acrylonitrile-butadiene-styrene copolymer (Acrylonitrile
Butadiene styrene copolymers, abbreviation ABS), polybutylene terephthalate (PBT) (Polybutylene
Terephthalat, abbreviation PBT), poly(p-phenylene terephthalamide) (Poly-p-phenylene terephthamide, letter
Claim PPA), epoxy resin (epoxy resin), polystyrene (polyphenylene ether, abbreviation PPE), polyformaldehyde
(Polyformaldehyde, abbreviation POM), phenolic resin (Phenol-formaldehyde resin), polytetrafluoroethylene (PTFE)
(Polytetrafluoroethylene, abbreviation PTFE), silicon rubber (Silicone rubber), Kynoar
At least one of (Polyvinylidenefluoride, abbreviation PVDF), makrolon (Polycarbonate, abbreviation PC)；
And conductive metal material can be used in conductive layer 16 or carbon-based conductive material is made, the conductive metal material can be aluminium, copper,
At least one of nickel, titanium, silver, monel, aluminium zircaloy, the carbon-based conductive material can be graphite, acetylene black, graphene,
At least one of carbon nanotube.
Preferably, when the collector 10 is applied to anode pole piece, aluminum work can be used in the conductive layer 16 of the collector 10
It forms, when the collector 10 is applied to cathode pole piece, the conductive layer 16 of the collector 10 can be used copper and be made.
Since conductive layer 16 is made of metal material or carbon-based material, and insulating layer 14 is made of high molecular material,
In this way so that the insulating layer 14 of collector 10 different from the elongation of conductive layer 16 (elongation of normal conditions insulating layer 14 is more than
The elongation of conductive layer 16), specifically, the elongation of insulating layer 14 is about 1%, and the elongation of conductive layer 16 is about 0.4%~
0.6%, in carrying out follow-up cold pressure procedure, the length L1 that insulating layer 14 extends is more than the length L2 that conductive layer 16 extends, when cold
Pressure constantly carries out, and insulating layer 14 and the extended length difference Δ L (Δ L=L1-L2) of conductive layer 16 constantly accumulate, i.e.,：Δ L is increasingly
Greatly, when Δ L is increasing, the stress between insulating layer 14 and conductive layer 16 is also increasing, when insulating layer 14 and conductive layer
Stress F1 between 16 is more than between insulating layer 14 and conductive layer 16 when cohesive force F2, and conductive layer 16 starts de- from insulating layer 14
It falls.
Therefore, in order to alleviate the case where insulating layer 14 is with 16 demoulding of conductive layer, collector 10 may be provided with through conductive layer
16 and insulating layer 14 multiple stress relief holes 12, the pole piece with the collector 10 is being cold-pressed using cold pressing roller 20
When, as shown in figure 4, the stress between conductive layer 16 and insulating layer 14 can be made to be discharged at stress relief hole 12, so that absolutely
Edge layer 14 and the extended length difference Δ L of conductive layer 16 are approximately equal to 0, and the stress F1 between such conductive layer 16 and insulating layer 14 is less than
Cohesive force F2 between conductive layer 16 and insulating layer 14, the case where being effectively improved 10 demoulding of collector, i.e.,：Alleviate 16 He of conductive layer
The case where insulating layer 14 detaches, improves the stability in use of collector 10.
Wherein, by the way that multiple stress relief holes 12 are arranged on collector 10, it can also make the weight saving of collector 10, have
Body, it is that the weight of the collector 10 without stress relief hole 12 subtracts to have the weight of the collector 10 of stress relief hole 12
The weight of material at former stress relief hole 12.
For example, the width W of collector 10 is 80mm, spooling length L is 6000mm, and the thickness H of collector 10 is 14um, is answered
The aperture D of power release aperture 12 is 50um, and the pitch of holes E between each stress relief hole 12 is 0.5mm, and the density p of collector 10 is
1.2mg/mm3, therefore, 10 loss of weight of collector with single stress relief hole 12：M=ρ × π × (2 ÷ 1000 of D ÷)2×(H÷
1000)=0.00003297mg.It well imagines, when being provided with multiple stress relief holes 12 on collector 10, collector 10 subtracts
The weight gone also is multiplied.
In addition, since collector 10 has stress relief hole 12, when making pole piece, which can be active
Substance fills up, to which the energy density of the battery with the pole piece can be improved.And pass through the filling activity in stress relief hole 12
Substance, active material can will be connected positioned at the conductive layer 16 of 14 opposite sides of insulating layer, and electronics and ion can be between the two layers
Mutually circulation, improves the velocity of liquid assets of electronics and ion, reduces the resistance of pole piece, to reduce the resistance of battery.Experiment
Show that two batteries include the composite current collector for having insulating layer 14 and conductive layer 16, one of battery (hereinafter referred to as battery
A composite current collector) is not provided with stress relief hole 12, and the collector 10 of another battery (hereinafter referred to as battery B) is released with stress
The aperture D of discharge hole 12, the stress relief hole 12 can be 30um, and the pitch of holes E between two neighboring stress relief hole 12 is
0.5mm, the resistance for measuring battery A are 1.65m Ω, and the resistance of battery B is 1.45m Ω, it is seen that resistance after being punched to battery
Reduce 12.1%.
Optionally, as shown in figure 3, stress relief hole 12 includes through the first hole 12a of conductive layer 16 and through insulating layer
14 the second hole 12b, the first hole 12a and the contour line of the second hole 12b connections and the two overlap, and design in this way can reduce stress and release
The difficulty of processing of discharge hole 12, the first hole 12a and the second hole 12b can integral type be process, specifically, by 16 layers of conductive layer
After pressure is set to the opposite sides of insulating layer 14 in a thickness direction, the mode of laser boring or the mode of mechanical punching can be used
Collector 10 is punched, so as to form multiple stress relief holes through conductive layer 16 and insulating layer 14 on collector 10
12。
It should be noted that also detachable is process by above-mentioned first hole 12a and the second hole 12b, i.e.,：It can first use and swash
The mode of light punching or the mode of mechanical punching punch insulating layer 14, so as to form the second hole 12b on insulating layer 14, so
Conductive layer 16 is plated in afterwards on the insulating layer 14 for offering the second hole 12b, when plating conductive layer 16, conductive layer 16 need to be avoided
The position of the second hole 12b on insulating layer 14 is covered, so that conductive layer 16 has the first hole corresponding with the second hole 12b
12a, this mode, which avoids, punches conductive layer 16, and therefore, the edge that can alleviate the first hole 12a generates burr or metal fillings
The case where, it avoids the burr or metal fillings from penetrating readily through isolation film and causes battery failure or there is a situation where exploding, improve this
The safety in utilization of collector 10.
Preferably, the axis direction of stress relief hole 12 is parallel with the thickness direction of collector 10, that is to say, that in afflux
In the projection that the thickness direction of body 10 obtains, the perspective plane of the first hole 12a is overlapped with the perspective plane of the second hole 12b, using cold
When pressure roller 20 is cold-pressed the pole piece with the collector 10, it is ensured that be located at 14 opposite sides of insulating layer conductive layer 16 with
The stress generated between the opposite sides face of insulating layer 14 discharges at stress relief hole 12 simultaneously, so that insulating layer 14
Opposite sides face and the extended length difference Δ L of the conductive layer 16 positioned at 14 opposite sides of insulating layer are approximately equal to 0 simultaneously, further change
The case where being apt to 10 demoulding of collector improves the stability in use of collector 10.
In one embodiment of the application, stress relief hole 12 can be the circular hole with smooth edge, by by stress
Release aperture 12 is designed as circular hole, the case where can alleviating 10 stress concentration of collector, to which the structure that collector 10 can be improved is strong
Degree alleviates collector 10 and the case where broken belt occurs in the processes such as coating cold pressing.In addition, the edge of the stress relief hole 12 relatively light
It is sliding, that is to say, that the edge of the stress relief hole 12 does not have the impurity such as burr or metal fillings, to avoid the burr or metal
Bits penetrate readily through isolation film and cause battery failure or there is a situation where exploding, improve the safety in utilization of the collector 10.It needs
It is noted that the edge of stress relief hole 12 is the part of close stress relief hole 12 on conductive layer.
Wherein, the internal diameter of stress relief hole 12 can be 2um~2mm, it is preferable that the internal diameter of stress relief hole 12 be 10um~
On the one hand 50um too small can cause between conductive layer 16 and insulating layer 14 stress release to be imitated to avoid the internal diameter of stress relief hole 12
The situation of fruit difference, on the other hand can be excessive to avoid the internal diameter of stress relief hole 12, so as to cause in subsequent coated active material
When active material the case where blanking, reduce the coating difficulty of active material from stress relief hole 12 and reduce pole piece
Cost of manufacture.
One optionally in embodiment, each stress relief hole 12 is uniformly arranged in array, wherein as shown in Figure 1, respectively answering
The line direction of power release aperture 12 is the width direction of collector 10, and column direction is the length direction of collector 10, and design can in this way
The case where stress of alleviation collector 10 is excessively concentrated, but also the difficulty of processing of collector 10 can be reduced.Or each stress release
The line direction in hole 12 and the width direction of collector 10 are obliquely installed, the length of the column direction and collector 10 of each stress relief hole 12
Degree direction is obliquely installed, and design in this way enables multiple stress relief holes 12 on collector 10 to surround honeycomb structure (such as
The portions A shown in Fig. 2), to improve the structural strength of collector 10.
Preferably, the spacing in each row stress relief hole 12 between two neighboring stress relief hole 12 is 0.2mm~1mm；
Or the spacing in each row stress relief hole 12 between two neighboring stress relief hole 12 is 0.2mm~1mm, by will be in line direction
Or the spacing on column direction between two neighboring stress relief hole 12 controls in the range of 0.2mm~1mm, it further, can
Spacing between the two neighboring stress relief hole 12 on line direction or column direction is controlled in the range of 0.5mm~1mm, one
Aspect can alleviate pitch of holes excessive the case where causing conductive layer 16 to can be easily separated with insulating layer 14 and avoid pitch of holes excessive
The situation for causing the resistance of collector 10 excessive, on the other hand can alleviate that pitch of holes is too small to lead to 12 processing difficulties of stress relief hole
The case where, to improve the process velocity of stress relief hole 12, then improve the speed of production of collector 10.
It should be noted that in order to alleviate the stress concentration of collector 10, it is two neighboring in each row stress relief hole 12 to answer
Spacing between power release aperture 12 is identical as the spacing between two neighboring stress relief hole 12 in each row stress relief hole 12, and
It is respectively positioned in the range of 0.2mm~1mm.
Optionally in embodiment, the porosity of collector 10 is 0.02%~2%, on the one hand can alleviate hole for another
Rate is too small the case where causing conductive layer 16 to can be easily separated with insulating layer 14 and avoid the too small electricity for leading to collector 10 of porosity
Excessive situation is hindered, the excessive situation for causing the intensity of collector 10 poor of porosity on the other hand can be alleviated.
It should be noted that when the thickness of stress relief hole 12 size on the thickness direction of collector 10 and collector 10
When spending identical, which is ratio of the sum of the area of each stress relief hole 12 with the gross area of collector 10, which releases
The area of discharge hole 12 and the gross area of collector 10 are the area on the perspective plane obtained on the thickness direction of collector 1010.
Wherein, the thickness for the insulating layer 14 being previously mentioned can be 4um~50um, it is preferable that the thickness of insulating layer 14 is 7um
On the one hand on the other hand~15um can may be used to avoid the excessive situation for causing the resistance of collector 10 excessive of 14 thickness of insulating layer
To avoid the too small situation for causing the structural strength of collector 10 relatively low of 14 thickness of insulating layer, that is to say, that design is carrying in this way
The resistance of collector 10 can be also reduced while high 10 structural strength of collector.
Optionally, the thickness for the conductive layer 16 being previously mentioned is 0.005um~50um, it is preferable that the thickness of conductive layer 16
For 2um~10um, the excessive situation for being difficult to be coated uniformly on insulating layer 14 of 16 thickness of conductive layer on the one hand can be alleviated, it is another
Aspect can be to avoid the too small situation for causing 10 resistance of collector excessive of 16 thickness of conductive layer, that is to say, that design is dropping in this way
The coating difficulty of low conductive layer 16 and reduce the manufacture difficulty of collector 10 while, can also reduce the resistance of collector 10.
Based on above structure, the embodiment of the present application also provides a kind of pole pieces comprising described in any of the above-described embodiment
Collector 10, when the pole piece is anode pole piece, the conductive layer 16 of the collector 10 can be used aluminium and be made, when the pole piece is
When cathode pole piece, the conductive layer 16 of the collector 10 can be used copper and be made.Wherein, which may also include active material layer
18, which can be coated on the conductive layer 16 of collector 10, and the stress relief hole in collector 10 also can be filled
It in 12, is cold-pressed as shown in figure 4, the pole piece can pass through cold pressing roller 20, to ensure the adhesion stability of active nitride layer and conductive layer 16.
The embodiment of the present application provides a kind of battery again comprising above-mentioned pole piece.
The foregoing is merely the preferred embodiments of the application, are not intended to limit this application, for the skill of this field
For art personnel, the application can have various modifications and variations.Within the spirit and principles of this application, any made by repair
Change, equivalent replacement, improvement etc., should be included within the protection domain of the application.
Claims (10)
1. a kind of collector, which is characterized in that including：Insulating layer and conductive layer, the conductive layer lamination are set to the insulation
The opposite sides of layer in a thickness direction, the collector are provided through multiple stress of the conductive layer and the insulating layer
Release aperture.
2. collector according to claim 1, which is characterized in that the stress relief hole includes running through the conductive layer
First hole and the second hole through the insulating layer, first hole is connected to second hole and the contour line of the two overlaps.
3. collector according to claim 2, which is characterized in that the axis direction of the stress relief hole and the afflux
The thickness direction of body is parallel.
4. collector according to claim 1, which is characterized in that the stress relief hole is uniformly arranged in array,
The line direction of each stress relief hole is the width direction of the collector, and column direction is the length side of the collector
To, or
The width direction of the line direction and the collector of each stress relief hole is obliquely installed, each stress relief hole
The length direction of column direction and the collector is obliquely installed.
5. collector according to claim 4, which is characterized in that
Spacing in stress relief hole described in each row between the two neighboring stress relief hole is 0.2mm~1mm；And/or
It is 0.2mm~1mm respectively to arrange the spacing in the stress relief hole between the two neighboring stress relief hole.
6. collector according to claim 1, which is characterized in that the porosity of the collector is 0.02%~2%, institute
State ratio of the sum of the area that porosity is each stress relief hole with the gross area of the collector.
7. collector according to claim 1, which is characterized in that the thickness of the insulating layer is 7um~15um.
8. collector according to claim 1, which is characterized in that the thickness of the conductive layer is 2um~10um.
9. a kind of pole piece, which is characterized in that including collector described in any item of the claim 1 to 8.
10. a kind of battery, which is characterized in that including the pole piece described in claim 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820257450.2U CN207818780U (en) | 2018-02-13 | 2018-02-13 | Collector, pole piece and battery |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820257450.2U CN207818780U (en) | 2018-02-13 | 2018-02-13 | Collector, pole piece and battery |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207818780U true CN207818780U (en) | 2018-09-04 |
Family
ID=63321120
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820257450.2U Active CN207818780U (en) | 2018-02-13 | 2018-02-13 | Collector, pole piece and battery |
Country Status (1)
| Country | Link |
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| CN (1) | CN207818780U (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109802142A (en) * | 2019-01-25 | 2019-05-24 | 浙江大学 | A kind of porous copper foil of lithium ion battery |
| CN110600673A (en) * | 2019-08-30 | 2019-12-20 | 长沙锂安能电子科技有限公司 | Manufacturing method and manufacturing equipment of double-sided coating integrated three-dimensional base material |
| CN110649268A (en) * | 2019-09-29 | 2020-01-03 | 昆山宝创新能源科技有限公司 | Negative current collector for lithium battery and lithium battery |
| WO2020073887A1 (en) * | 2018-10-11 | 2020-04-16 | 宁德时代新能源科技股份有限公司 | Secondary battery and manufacturing method therefor, electrode component and manufacturing method therefor, and manufacturing method for current collector |
| CN111029588A (en) * | 2019-12-11 | 2020-04-17 | 合肥国轩高科动力能源有限公司 | Be provided with mass flow body of little insurance and contain lithium ion battery pole piece of this mass flow body |
| US11101493B2 (en) | 2018-10-11 | 2021-08-24 | Contemporary Amperex Technology Co., Limited | Secondary battery and electrode member thereof |
| CN114496350A (en) * | 2020-10-23 | 2022-05-13 | 荣耀终端有限公司 | Electrode, electronic device and device |
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2018
- 2018-02-13 CN CN201820257450.2U patent/CN207818780U/en active Active
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| Publication number | Priority date | Publication date | Assignee | Title |
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| WO2020073887A1 (en) * | 2018-10-11 | 2020-04-16 | 宁德时代新能源科技股份有限公司 | Secondary battery and manufacturing method therefor, electrode component and manufacturing method therefor, and manufacturing method for current collector |
| US11101493B2 (en) | 2018-10-11 | 2021-08-24 | Contemporary Amperex Technology Co., Limited | Secondary battery and electrode member thereof |
| JP2022504655A (en) * | 2018-10-11 | 2022-01-13 | 寧徳時代新能源科技股▲分▼有限公司 | Secondary battery and its manufacturing method, electrode member and its manufacturing method, current collector manufacturing method |
| JP7212773B2 (en) | 2018-10-11 | 2023-01-25 | 寧徳時代新能源科技股▲分▼有限公司 | SECONDARY BATTERY AND MANUFACTURING METHOD THEREOF, ELECTRODE MEMBER AND MANUFACTURING METHOD THEREOF, METHOD FOR MANUFACTURING CURRENT COLLECTOR |
| CN109802142A (en) * | 2019-01-25 | 2019-05-24 | 浙江大学 | A kind of porous copper foil of lithium ion battery |
| CN110600673A (en) * | 2019-08-30 | 2019-12-20 | 长沙锂安能电子科技有限公司 | Manufacturing method and manufacturing equipment of double-sided coating integrated three-dimensional base material |
| CN110600673B (en) * | 2019-08-30 | 2021-07-09 | 吴达红 | Manufacturing method and manufacturing equipment of double-sided coating integrated three-dimensional base material |
| CN110649268A (en) * | 2019-09-29 | 2020-01-03 | 昆山宝创新能源科技有限公司 | Negative current collector for lithium battery and lithium battery |
| CN111029588A (en) * | 2019-12-11 | 2020-04-17 | 合肥国轩高科动力能源有限公司 | Be provided with mass flow body of little insurance and contain lithium ion battery pole piece of this mass flow body |
| CN111029588B (en) * | 2019-12-11 | 2022-04-12 | 合肥国轩高科动力能源有限公司 | Be provided with mass flow body of little insurance and contain lithium ion battery pole piece of this mass flow body |
| CN114496350A (en) * | 2020-10-23 | 2022-05-13 | 荣耀终端有限公司 | Electrode, electronic device and device |
| CN114496350B (en) * | 2020-10-23 | 2024-05-03 | 荣耀终端有限公司 | Electrode, electronic device and device |
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