CN205900718U - High safe high magnification lithium ion battery - Google Patents
High safe high magnification lithium ion battery Download PDFInfo
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- CN205900718U CN205900718U CN201620850186.4U CN201620850186U CN205900718U CN 205900718 U CN205900718 U CN 205900718U CN 201620850186 U CN201620850186 U CN 201620850186U CN 205900718 U CN205900718 U CN 205900718U
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- layer
- conductive carbon
- active material
- aluminium foil
- body aluminium
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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)
- Battery Electrode And Active Subsutance (AREA)
Abstract
The utility model discloses a high safe high magnification lithium ion battery, it includes anodal mass flow body aluminium foil, electrically conductive carbon -coating, positive active material layer, and anodal mass flow body aluminium foil is located between the two -layer electrically conductive carbon -coating, and two -layer electrically conductive carbon -coating is located respectively between anodal mass flow body aluminium foil and the one deck positive active material layer, and two -layer positive active material layer is located the two -layer electrically conductive carbon -coating outside respectively. The utility model discloses big multiplying power charge -discharge both can have been realized to the sound construction, had guaranteed the security performance again.
Description
Technical field
This utility model is related to a kind of battery, more particularly to a kind of high safety high multiplying power lithium ion battery.
Background technology
With the popularization of new-energy automobile, lithium-ion-power cell becomes the focus of research, and lithium-ion-power cell has
There is energy density high, self discharge is little, memory-less effect, and the advantages of good cycle.At present, high safety, powerful lithium from
Sub- electrokinetic cell receives significant attention.In order to lift the security performance of lithium ion battery, anti-mistake typically can be added in the electrolytic solution
Charging additive or flame-retardant additive, but the addition of these additives can have a negative impact to battery performance.Ptc material is just
Temperature coefficient materials, within the scope of certain temperature, the resistivity of material itself can increase with the rising of temperature, using this spy
Point, ptc can be used as battery overcurrent protection material.In order to improve battery high rate capability, typically pass through to adjust positive/negative plate formula
To achieve the goal with surface density, such as to improve conductive agent content and reduce surface density, electricity can be improved to a certain extent
The high rate performance in pond, but this method, significantly reduce the energy density of battery.
Utility model content
Technical problem to be solved in the utility model is to provide a kind of high safety high multiplying power lithium ion battery, its structure jail
Gu, both can achieve high rate charge-discharge, in turn ensure that security performance.
This utility model is to solve above-mentioned technical problem by following technical proposals: a kind of high safety high rate lithium from
Sub- battery is it is characterised in that it includes plus plate current-collecting body aluminium foil, conductive carbon layer, positive electrode active material layer, plus plate current-collecting body aluminium foil
Between two-layer conductive carbon layer, two-layer conductive carbon layer be located at respectively plus plate current-collecting body aluminium foil and one layer of positive electrode active material layer it
Between, two-layer positive electrode active material layer is located at outside two-layer conductive carbon layer respectively.
Preferably, described conductive carbon layer contains binding agent.
Preferably, described positive electrode active material layer contains ptc material.
Preferably, the thickness of described positive electrode active material layer is more than the thickness of plus plate current-collecting body aluminium foil, plus plate current-collecting body aluminum
The thickness of paper tinsel is more than the thickness of conductive carbon layer.
Positive effect of the present utility model is: this utility model sound construction, anti-flammability and thermal diffusivity are good, both may be used
Realize high rate charge-discharge, in turn ensure that security performance.One layer of very thin conductive carbon layer is coated with plus plate current-collecting body aluminium foil, this
Sample both can increase the adhesive force between positive electrode and collector, can increase conductive contact area again, lifts electronic conduction
Property, reduce battery polarization, and then reduce the internal resistance of cell, the high rate capability of lifting battery.Ptc material in positive electrode active material layer
Material can be when internal temperature of battery raises, and its resistance increases sharply, and makes to reduce rapidly by the electric current of battery, thus stoping electricity
Pond temperature raises further, improves safety.
Brief description
Fig. 1 is structural representation of the present utility model.
Specific embodiment
Provide this utility model preferred embodiment below in conjunction with the accompanying drawings, to describe the technical solution of the utility model in detail.
As shown in figure 1, this utility model high safety high multiplying power lithium ion battery includes plus plate current-collecting body aluminium foil 1, conductive carbon
Layer 2, positive electrode active material layer 3, plus plate current-collecting body aluminium foil 1 is located between two-layer conductive carbon layer 2, two-layer conductive carbon layer 2 position respectively
Between plus plate current-collecting body aluminium foil 1 and one layer of positive electrode active material layer 3, two-layer positive electrode active material layer 3 is led positioned at two-layer respectively
Outside electrical carbon layer 2.
The thickness of positive electrode active material layer 3 is more than the thickness of plus plate current-collecting body aluminium foil 1, the thickness of plus plate current-collecting body aluminium foil 1
More than the thickness of conductive carbon layer 2, so save material, reduces cost.
Operation principle of the present utility model is as follows: one layer of very thin conductive carbon layer is coated with plus plate current-collecting body aluminium foil,
So both can increase the adhesive force between positive electrode and collector, conductive contact area can have been increased again, lifting electronics had been led
Electrically, reduce battery polarization, and then reduce the internal resistance of cell, the high rate capability of lifting battery.Ptc in positive electrode active material layer
Material can be when internal temperature of battery raises, and its resistance increases sharply, and makes to reduce rapidly by the electric current of battery, thus stoping
Battery temperature raises further, improves safety.
Described conductive carbon layer contains binding agent, and such conductive carbon layer and plus plate current-collecting body aluminium foil, positive electrode active material layer are all
Can firmly connect.
Described positive electrode active material layer contains ptc (positive temperature coefficient) material, so can play the work of overcurrent protection
With improving the safety of battery.
Particular embodiments described above, to the technical problem of solution of the present utility model, technical scheme and beneficial effect
Further described, be should be understood that and the foregoing is only specific embodiment of the utility model, not
For limiting this utility model, all within spirit of the present utility model and principle, any modification of being made, equivalent, change
Enter, should be included within protection domain of the present utility model.
Claims (4)
1. a kind of high safety high multiplying power lithium ion battery is it is characterised in that it includes plus plate current-collecting body aluminium foil, conductive carbon layer, just
Pole active material layer, plus plate current-collecting body aluminium foil is located between two-layer conductive carbon layer, and two-layer conductive carbon layer is located at anode collection respectively
Between body aluminium foil and one layer of positive electrode active material layer, two-layer positive electrode active material layer is located at outside two-layer conductive carbon layer respectively.
2. high safety high multiplying power lithium ion battery as claimed in claim 1 is it is characterised in that described conductive carbon layer contains bonding
Agent.
3. high safety high multiplying power lithium ion battery as claimed in claim 1 is it is characterised in that described positive electrode active material layer contains
There is ptc material.
4. high safety high multiplying power lithium ion battery as claimed in claim 1 is it is characterised in that described positive electrode active material layer
Thickness is more than the thickness of plus plate current-collecting body aluminium foil, and the thickness of plus plate current-collecting body aluminium foil is more than the thickness of conductive carbon layer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620850186.4U CN205900718U (en) | 2016-08-08 | 2016-08-08 | High safe high magnification lithium ion battery |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620850186.4U CN205900718U (en) | 2016-08-08 | 2016-08-08 | High safe high magnification lithium ion battery |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205900718U true CN205900718U (en) | 2017-01-18 |
Family
ID=57783618
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620850186.4U Active CN205900718U (en) | 2016-08-08 | 2016-08-08 | High safe high magnification lithium ion battery |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205900718U (en) |
-
2016
- 2016-08-08 CN CN201620850186.4U patent/CN205900718U/en active Active
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20170811 Address after: 225314, No. 31, Tai'an Road, hailing Industrial Zone, Jiangsu, Taizhou, 1-4 Patentee after: Jiangsu Amperex Technology Limited Address before: 201821 Shanghai City, Jiading District Jiading Industrial Park, Zhaoxian Road No. 1280 Patentee before: Shanghai Champion Science & Technology Limited |