CN206564290U - collector and battery - Google Patents
collector and battery Download PDFInfo
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- CN206564290U CN206564290U CN201621463673.1U CN201621463673U CN206564290U CN 206564290 U CN206564290 U CN 206564290U CN 201621463673 U CN201621463673 U CN 201621463673U CN 206564290 U CN206564290 U CN 206564290U
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- Prior art keywords
- collector
- battery
- protective layer
- insulating resin
- resin protective
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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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- Cell Electrode Carriers And Collectors (AREA)
Abstract
The utility model is related to a kind of collector and battery; its insulating resin protective layer for including metal foil and being covered in the surface of metal foil one; the insulating resin protective layer is embedded with some nano-scale amorphous carbon pipes; wherein at normal temperatures, two of the arbitrary neighborhood nano-scale amorphous carbon pipes are in contact.Above-mentioned collector and battery, without carrying out complicated optimization design to the positive electrode of battery, negative material, electrolysis additive or battery structure, the electrochemical system of ion battery need not be changed, improve difficulty relatively small, risk is relatively low, there is good security performance simultaneously, therefore with stronger industrial applicibility.
Description
Technical field
The utility model is related to field of batteries, more particularly to a kind of collector and battery.
Background technology
At present, lithium ion battery be widely used in mobile phone, it is tablet personal computer, wearable device, portable power source, electronic cigarette, each
The fields such as digital product, electric tool, power, energy storage are planted, the application of its market is wide, potentiality are big.With the application of lithium ion battery
Increasingly extensive, battery energy density more and more higher, battery capacity are increasing, and security performance turns into more distinct issues.
In terms of battery safety is improved, there are multiple technologies method and route, include improvement, the negative pole material of positive electrode
The improvement of material, the improvement of electrolysis additive, the optimization design of battery structure, the control of processing and fabricating and improvement etc..These change
The electrochemical system of ion battery may be changed by entering method, and improvement difficulty is relatively large, and risk is higher.
Utility model content
Based on this, it is necessary to provide a kind of collector and battery, can the electrochemical system for not changing battery premise
Under, improve the security of battery.
A kind of collector, its insulating resin protective layer for including metal foil and being covered in the surface of metal foil one is described
Insulating resin protective layer is embedded with some nano-scale amorphous carbon pipes, wherein at normal temperatures, two nanometers of arbitrary neighborhood
Grade amorphous carbon pipe is in contact.
In one of the embodiments, the metal foil is aluminium foil, copper foil, titanium foil, titanium alloy foil or nickel foil.
In one of the embodiments, the thickness of the poly- third insulating resin protective layer is 1.5 μm~45.6 μm.
In one of the embodiments, the thickness of the poly- third insulating resin protective layer is 1.5 μm~18.8 μm.
In one of the embodiments, the nano-scale amorphous carbon pipe uniformly divides in the insulating resin protective layer
Cloth.
In one of the embodiments, in addition to graphene layer.
In one of the embodiments, the graphene layer is covered in the metal foil away from the insulating resin protective layer
Another surface.
In one of the embodiments, the graphene layer be arranged at the metal foil and the insulating resin protective layer it
Between.
A kind of battery, including positive pole, negative pole and electrolyte, the positive pole include plus plate current-collecting body and positive active material,
It is any one as described above that the negative pole, which includes at least one in negative current collector, the plus plate current-collecting body and the negative current collector,
Described collector.
In one of the embodiments, the plus plate current-collecting body is collector as described above described in any one, the insulation
Resin protective layer is arranged at the metal foil close to a surface of the positive active material.
Above-mentioned collector and battery, without to the positive electrode of battery, negative material, electrolysis additive or battery structure
Complicated optimization design is carried out, the electrochemical system without changing ion battery, improvement difficulty is relatively small, and risk is relatively low, together
When with good security performance, therefore with stronger industrial applicibility.
Brief description of the drawings
Fig. 1 is the structural representation of the collector of the embodiment of the utility model one；
Fig. 2 a are the structural representation of the collector of another embodiment of the utility model；
Fig. 2 b are the structural representation of the collector of the another embodiment of the utility model；
Fig. 2 c are the structural representation of the collector of the another embodiment of the utility model.
Embodiment
To enable above-mentioned purpose of the present utility model, feature and advantage more obvious understandable, below in conjunction with the accompanying drawings to this
The embodiment of utility model is described in detail.Elaborate many details in order to abundant in the following description
Understand the utility model.But the utility model can be implemented with being much different from other manner described here, this area
Technical staff can do similar improvement in the case of without prejudice to the utility model intension, therefore the utility model is not by following public affairs
The limitation for the specific embodiment opened.
In addition, term " first ", " second " are only used for describing purpose, and it is not intended that indicating or implying relative importance
Or the implicit quantity for indicating indicated technical characteristic.Thus, define " first ", the feature of " second " can express or
Implicitly include at least one this feature.In description of the present utility model, " multiple " are meant that at least two, such as two
It is individual, three etc., unless otherwise specifically defined.
For example, a kind of collector, its insulating resin protective layer for including metal foil and being covered in the surface of metal foil one,
The insulating resin protective layer is embedded with some nano-scale amorphous carbon pipes, wherein the nano-scale amorphous carbon pipe is described exhausted
It is uniformly distributed in edge resin protective layer.
In order to further illustrate above-mentioned collector, an example is, as shown in figure 1, collector 100 includes metal foil 110
And insulating resin protective layer 120, wherein insulating resin protective layer is covered in a surface of metal foil, and insulating resin protective layer
Some nano-scale amorphous carbon pipes 121 are embedded with, wherein at normal temperatures, two nano-scale amorphous carbon pipes of arbitrary neighborhood
It is in contact, enables insulating resin protective layer under normal temperature conductive.For example, the collector is at normal temperatures in insulating resin protective layer
Two nano-scale amorphous carbon pipes of arbitrary neighborhood be in contact setting, when battery temperature rise, beyond safe temperature model
When enclosing, insulating resin protective layer expanded by heating, the nano-scale amorphous carbon pipe being embedded in insulating resin protective layer no longer closely connects
Touch so that the internal resistance of collector increased dramatically, cut off electric current, can prevent battery from further producing heat.
It is understood that normal temperature refers to general temperature or is generally room temperature, for example, the normal temperature refers to 10 DEG C~40 DEG C,
And for example, the normal temperature refers to 15 DEG C~30 DEG C, and for example, and the normal temperature refers to 25 DEG C.
As a kind of embodiment, some nano-scale amorphous carbon Guan Weiyi layers, nano-scale amorphous the carbon pipe and metal
Paper tinsel is in contact.As a kind of embodiment, some nano-scale amorphous carbon pipes are at least two layers, wherein one layer nano-scale amorphous
Carbon pipe is in contact with metal foil.For example, at least at normal temperatures, one layer of nano-scale amorphous carbon pipe is in contact with metal foil.So,
At normal temperatures, the internal resistance of collector is smaller, can collect the electric current that cell active materials are produced, and forms larger electric current
Externally output.
Wherein, above-mentioned metal foil is aluminium foil, copper foil, titanium foil, titanium alloy foil or nickel foil.For example, when above-mentioned collector is just
During the collector of pole, above-mentioned metal foil is aluminium foil, titanium foil or titanium alloy foil, when above-mentioned collector is negative current collector, above-mentioned gold
It is copper foil or nickel foil to belong to paper tinsel.And for example, when above-mentioned collector be plus plate current-collecting body when, above-mentioned metal foil be titanium foil or titanium alloy foil,
Because the oxidation resistance of titanium foil or titanium alloy foil is strong, fusing point is high, intensity is big, therefore during using titanium foil or titanium alloy foil, thickness
It is smaller than aluminium foil, the thickness of battery can be reduced, and also self discharge is small under high voltages for use titanium foil or the battery of titanium alloy foil, energy
Enough extend the service life of battery.
In the present embodiment, nano-scale amorphous carbon pipe and isotactic polypropylene resin are combined with metal foil, collector is made,
The internal resistance of collector in battery-heating, can be made drastically to raise, cut off electric current, prevent battery from further producing heat, so that
Improve the security performance of battery.Wherein, by test, above-mentioned collector, when temperature reaches 90~100 DEG C, internal resistance can drastically rise
Height arrives 10 during normal temperature4~105Times, the security performance of battery can be effectively improved.
Using above-mentioned collector, without entering to the positive electrode of battery, negative material, electrolysis additive or battery structure
The complicated optimization design of row, the electrochemical system without changing ion battery, improvement difficulty is relatively small, and risk is relatively low, simultaneously
With good security performance, therefore with stronger industrial applicibility.
In one embodiment, insulating resin protective layer is thermoplastic insulating resin's protective layer.For example, insulating resin is protected
Layer is isotactic polypropylene resin protective layer, and isotactic polypropylene resin has preferable electrical insulating property and thermoplasticity, can be in battery
Adstante febre softening expansion, separates nano-scale amorphous carbon pipe, increases the internal resistance of collector, additionally it is possible to cool under battery temperature
After restore to the original state, contact nano-scale amorphous carbon pipe, recover the electric conductivity of collector.And isotactic polypropylene melting point resin
It is high, heat-resisting, corrosion-resistant, the corrosion of electrolyte in battery can be resisted.
In one embodiment, the thickness of the poly- third insulating resin protective layer is 1.5 μm~45.6 μm.For example, in order to
Reduce the thickness of battery, realize battery lightening, the thickness of the poly- third insulating resin protective layer is 1.5 μm~18.8 μm.
And for example, it is described poly- in order to strengthen the electric conductivity of collector during normal temperature because nano-scale amorphous carbon pipe has good electric conductivity
The thickness of third insulating resin protective layer is 29.8 μm~45.6 μm.And for example, the thickness of the poly- third insulating resin protective layer is
20.6 μm, the electric conductivity of collector at normal temperatures can be strengthened, the thickness of battery can be reduced again.
In one embodiment, the nano-scale amorphous carbon pipe is uniformly distributed in the insulating resin protective layer.Again
Such as, if the nano-scale amorphous carbon pipe forms nanometer in dry carbon tube layer, each carbon tube layer in the insulating resin protective layer
Grade amorphous carbon pipe is uniformly distributed.And for example, the thickness of each carbon tube layer according to the distance of carbon tube layer and metal foil into decreasing order
Set.And for example, the thickness order of each carbon tube layer, which reduces, is set, wherein the thickness close to the carbon tube layer of metal foil is maximum.
In one embodiment, in order to strengthen the electric conductivity of normal temperature next part fluid, the collector also includes graphene
Layer 130.For example, as shown in Figure 2 a, graphene layer is covered in another table of the metal foil away from the insulating resin protective layer
Face.And for example, as shown in Figure 2 b, graphene layer is arranged between the metal foil and the insulating resin protective layer.And for example, as schemed
Shown in 2c, graphene layer is covered in a surface of the insulating resin protective layer away from the metal foil, wherein the graphene
Layer is in contact with one layer of nano-scale amorphous carbon pipe in insulating resin protective layer.
In one embodiment, the thickness of the graphene layer is 1.2nm to 3.7 μm.So, good lead both had been can guarantee that
Electric effect, is unlikely to the thickness of undue increase collector again.For example, the thickness of graphene layer is 2.4 μm~3.1 μm.
The embodiment of the invention also discloses a kind of battery, the battery includes positive pole, negative pole and electrolyte, and the positive pole includes
Plus plate current-collecting body and positive active material, the negative pole include negative current collector, wherein, the plus plate current-collecting body and the negative pole
At least one in collector is the collector as described in above-mentioned any embodiment.
Wherein, positive active material is used to participate in electrochemical reaction, can reversibly deviate from/embedded ion.The electricity
Solution liquid includes at least one solvent that can be dissolved electrolyte and ionize the electrolyte；The electrolyte can ionize out to
The active ion of reduction-deposition and oxidation-dissolving occurs in the negative pole in a kind of few charge and discharge process.
In one embodiment, the plus plate current-collecting body be such as the collector 100 as described in above-mentioned any embodiment, it is described
Insulating resin protective layer is arranged at the metal foil close to a surface of the positive active material.
In one embodiment, the metal foil of the plus plate current-collecting body is aluminium foil, titanium foil or titanium alloy foil, the negative pole collection
The metal foil of fluid is copper foil or nickel foil.
Above-mentioned battery, is employed nano-scale amorphous carbon pipe and isotactic polypropylene resin and the compound obtained collection of metal foil
Fluid, in battery-heating, can be such that the internal resistance of collector drastically raises, and cut off electric current, prevent battery from further producing heat,
So as to improve the security performance of battery.Wherein, by test, above-mentioned collector, when temperature reaches 90~100 DEG C, internal resistance can be anxious
Play is increased to 10 during normal temperature4~105Times, the security performance of battery can be effectively improved.
The utility model is further elaborated below in conjunction with specific embodiment.
Embodiment 1
In thickness to prepare the insulating resin protective layer of 6 μ m-thicks on 12 μm of aluminium foil, plus plate current-collecting body A1 is formed.In thickness
To prepare the insulating resin protective layer of 5 μ m-thicks on 9 μm of copper foils, negative current collector B1 is formed.Wherein, plus plate current-collecting body and negative pole
Some nano-scale amorphous carbon pipes are embedded with the insulating resin protective layer of collector.With plus plate current-collecting body A1 and negative current collector
B1 prepares battery C1.
Comparative example 1
With embodiment 1 except that, with the aluminium foils of 12 μ m-thicks as plus plate current-collecting body A2, with 9 μm of copper foils as negative
Pole collector B2, other are same as Example 1.Battery C2 is prepared with plus plate current-collecting body A2 and negative current collector B2.
Respectively for battery C1 and battery C2 carry out short circuit, overcharge, hot tank, the test such as acupuncture and heavy impact.
Inspect 100 in 1000 batteries by random samples, count its probability of acceptance of spot check, statistical result is shown in Table 1.
| C1 | C2 | |
| Short circuit (55 ± 2 DEG C, full electricity, UL standards) | 100% | 80% |
| Overcharge and (be put into 3V to do again, 3C5V) | 100% | 100% |
| Hot tank (full electricity, 130 DEG C, 1 hour) | 100% | 100% |
| Acupuncture (full electricity, 3mm, 100m/s speed) | 100% | 80% |
| Heavy impact (full electricity, UL standards) | 100% | 60% |
| Heavy impact (full electricity, 1m, 10kg) | 100% | 40% |
Table 1
As it can be seen from table 1 using plus plate current-collecting body A1 and negative current collector B1 battery C1, in short circuit, acupuncture, weight
In the test such as impact, its probability of acceptance of spot check is much larger than the battery C2 with plus plate current-collecting body A2 and negative current collector B2.This explanation is originally
The battery diaphragm that utility model is provided, can effectively improve the security performance of battery.
Each technical characteristic of embodiment described above can be combined arbitrarily, to make description succinct, not to above-mentioned reality
Apply all possible combination of each technical characteristic in example to be all described, as long as however, the combination of these technical characteristics is not deposited
In contradiction, the scope of this specification record is all considered to be.
Embodiment described above only expresses several embodiments of the present utility model, and it describes more specific and detailed,
But therefore it can not be interpreted as the limitation to utility model patent scope.It should be pointed out that for the common skill of this area
For art personnel, without departing from the concept of the premise utility, various modifications and improvements can be made, these are belonged to
Protection domain of the present utility model.Therefore, the protection domain of the utility model patent should be determined by the appended claims.
Claims (10)
1. a kind of collector, it is characterised in that protected including metal foil and the insulating resin for being covered in the surface of metal foil one
Layer, the insulating resin protective layer is embedded with some nano-scale amorphous carbon pipes, wherein at normal temperatures, two institutes of arbitrary neighborhood
Nano-scale amorphous carbon pipe is stated to be in contact.
2. collector as claimed in claim 1, it is characterised in that the metal foil is aluminium foil, copper foil, titanium foil, titanium alloy foil
Or nickel foil.
3. collector as claimed in claim 1, it is characterised in that the insulating resin protective layer is protected for acrylic resin
Layer, the thickness of the poly- third insulating resin protective layer is 1.5 μm~45.6 μm.
4. collector as claimed in claim 3, it is characterised in that the thickness of the polypropylene insulation resin protective layer is 1.5 μ
M~18.8 μm.
5. collector as claimed in claim 1, it is characterised in that the nano-scale amorphous carbon pipe is protected in the insulating resin
It is uniformly distributed in sheath.
6. collector as claimed in claim 1, it is characterised in that also including graphene layer.
7. collector as claimed in claim 6, it is characterised in that the graphene layer is covered in the metal foil away from described
Another surface of insulating resin protective layer.
8. collector as claimed in claim 6, it is characterised in that the graphene layer is arranged at the metal foil and described exhausted
Between edge resin protective layer.
9. a kind of battery, including positive pole, negative pole and electrolyte, the positive pole include plus plate current-collecting body and positive active material, institute
Stating negative pole includes negative current collector, it is characterised in that at least one in the plus plate current-collecting body and the negative current collector is such as
Collector any one of claim 1 to 8.
10. battery as claimed in claim 9, it is characterised in that the plus plate current-collecting body is as any in claim 1 to 8
Collector described in, the insulating resin protective layer is arranged at a table of the metal foil close to the positive active material
Face.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621463673.1U CN206564290U (en) | 2016-12-28 | 2016-12-28 | collector and battery |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621463673.1U CN206564290U (en) | 2016-12-28 | 2016-12-28 | collector and battery |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206564290U true CN206564290U (en) | 2017-10-17 |
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ID=60028807
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201621463673.1U Expired - Fee Related CN206564290U (en) | 2016-12-28 | 2016-12-28 | collector and battery |
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| CN (1) | CN206564290U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109742443A (en) * | 2018-12-29 | 2019-05-10 | 桑德集团有限公司 | A kind of solid electrolyte membrane and all-solid-state battery |
| CN111370721A (en) * | 2020-03-19 | 2020-07-03 | 辽宁科京新材料科技有限公司 | Bipolar plate for flow battery |
| WO2022100279A1 (en) * | 2020-11-16 | 2022-05-19 | Oppo广东移动通信有限公司 | Composite current collector, composite electrode plate, battery and electronic device |
-
2016
- 2016-12-28 CN CN201621463673.1U patent/CN206564290U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109742443A (en) * | 2018-12-29 | 2019-05-10 | 桑德集团有限公司 | A kind of solid electrolyte membrane and all-solid-state battery |
| CN111370721A (en) * | 2020-03-19 | 2020-07-03 | 辽宁科京新材料科技有限公司 | Bipolar plate for flow battery |
| WO2022100279A1 (en) * | 2020-11-16 | 2022-05-19 | Oppo广东移动通信有限公司 | Composite current collector, composite electrode plate, battery and electronic device |
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| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20171017 Termination date: 20191228 |
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| CF01 | Termination of patent right due to non-payment of annual fee |