CN203013880U - Lithium ion battery with graphite cooling fins - Google Patents
Lithium ion battery with graphite cooling fins Download PDFInfo
- Publication number
- CN203013880U CN203013880U CN2012206018058U CN201220601805U CN203013880U CN 203013880 U CN203013880 U CN 203013880U CN 2012206018058 U CN2012206018058 U CN 2012206018058U CN 201220601805 U CN201220601805 U CN 201220601805U CN 203013880 U CN203013880 U CN 203013880U
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- China
- Prior art keywords
- lithium ion
- ion battery
- battery
- cell
- cooling fins
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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 relates to a lithium ion battery with graphite cooling fins. The lithium ion battery comprises a lithium ion battery cell (2) and the graphite cooling fins (1), wherein the upper surface and the lower surface of the cell (2) are respectively and tightly pasted with one graphite cooling fin (1). According to the lithium ion battery, heat conduction is implemented by virtue of physical characteristics of high heat conductivity coefficient, rapid heat conduction and low heat resistance of graphite, heat of the cell is efficiently transferred to the cooling fins and then is transferred to air in a cross-ventilation mode, the surface temperature of the cell can be rapidly and uniformly distributed by virtue of the rapid heat conduction capability of the cooling fins, and especially, the surface temperature of the cell can be uniformly distributed under a large current condition. Compared with a traditional flexible packaging lithium ion battery, the lithium ion battery has the advantages that the heat conduction and heat dispersion of the battery are excellent, the cycling performance of the lithium ion battery is improved obviously, and the service life of the lithium ion battery is effectively prolonged.
Description
Technical field
The utility model relates to field of batteries, relates in particular the improvement of lithium ion battery cell radiator structure, helps to improve its chemical property and security performance.
Background technology
Since nineteen ninety, lithium ion battery came out, the material of battery, production technology development are rapidly, battery supporting the raising of performance of lithium ion battery and perfect with the research of material, and the omnibearing improvement such as the high rate performance of battery, high temperature performance, security performance and cycle performance has been achieved lithium ion battery in the rapid popularization of a plurality of applications such as mobile phone, notebook computer, audio frequency goods, electric tool, stand-by power supply, power supply on vehicle system.Along with the expansion of application, lithium ion battery will keep the vigorous market demand in Future Ten year, and is generalized to more application.
Increasingly mature along with electric vehicle engineering, the dream of electric automobile, hybrid vehicle Stepping into daily life becomes a reality, directly determined the overall performance of electric automobile in the quality of the universal process medium power battery performance of electric automobile, this also has higher requirement to electric automobile vehicle mounted electric pond.At present at the electric automobiles soft bag lithium ionic cell by more application, this inside battery mostly adopts the multi-electrode parallel-connection structure to form battery battery core, the outside aluminum plastic film plastic sealing pack that uses.the needed cell number of on-vehicle battery group is more, battery pack often will be followed higher pulse power output in actual application, larger current loading also often appears in cell, inner a large amount of heat production, adopt stacked structure to assemble battery core because flexible-packed battery at present, CURRENT DISTRIBUTION is also inhomogeneous, the battery core heat distribution is also inhomogeneous, therefore cause battery core local location excess Temperature, make the electrolyte aggravation decompose volatilization, internal resistance increases, the polarization aggravation, the power-performance variation of battery, can produce more heat, form vicious circle, on the security performance of battery with great impact is arranged useful life, thereby affect performance and the vehicle performance of battery pack.
The utility model content
The purpose of this utility model is to overcome the inhomogeneous capacity attenuation that causes of heat radiation and the safety defect that shortcoming of the prior art is battery, existing structure is improved and optimizes, the utility model is by the tight stickup in the battery core surface a slice fin at inside battery, strengthened the capacity of heat transmission of battery core, a kind of inside lithium ion cell uniform radiating structure is provided.
A kind of lithium ion battery, it comprises lithium ion battery cell and fin, respectively is closely fitted with fin on the upper and lower surface of described battery core.
Wherein, described fin is graphite material.
Wherein, the one side of described fin is the heat conductive insulating glue-line, is used for sticking on the surface of described battery core, and the opposite side surface of described fin is the heat conductive insulating plastic layer, an insulating effect.
Wherein, described lithium ion battery is flexible packing lithium ion battery.
Wherein, the gelled described battery core plastic packaging of applying enters in aluminum plastic film.
Useful achievement of the present utility model is that graphite material has good hot property, can increase substantially the heat-sinking capability of battery core, because be close to the battery core surface, can make fast local " focus " Uniform Dispersion of battery core, security performance and the useful life of having improved battery; Graphite material lightweight can alleviate the weight of battery than other Heat Conduction Material, improve the energy density of battery; This graphite heat radiation fin is easy to be made into various geomeries and thickness as required, uses easily.
Description of drawings
Fig. 1 is the utility model uniform radiating structure battery core schematic diagram
Embodiment
The utility model be graphite material as the battery core structure of lithium-ion battery of fin, below in conjunction with accompanying drawing and implementation method, the utility model is further illustrated.
As shown in Figure 1, flexible packing lithium ion battery comprises battery battery core 2 and fin 1, two graphite fin 1 fit tightly respectively in the upper and lower surface of battery core 2, then battery core 2 plastic packagings that will post graphite heat radiation fin 1 enter in aluminum plastic film to get final product, and other structure and technology parameters of battery are constant.Wherein, a side surface relative with described battery core 2 of described fin 1 has the heat conductive insulating glue-line, and it is used for being pasted on the surface of described battery core, and there is the heat conductive insulating plastic layer on the opposite side surface of described fin, plays insulating effect.
Because this graphite heat radiation fin is to be made through special process by native graphite, have the good capacity of heat transmission and unique planar direction Homogeneouslly-radiating ability, therefore excess Temperature zone heat on battery can be absorbed fast and is dispersed to other zones, overcome the inhomogeneous defective of existing battery heat distribution, security performance and the useful life of having improved battery.The quality of this graphite heat radiation fin is gently more a lot of than heat-conducting metal aluminium or the copper of same size simultaneously, therefore can reduce the quality of battery and improve energy content of battery density.
The above; it is only the better embodiment of the utility model; but protection range of the present utility model is not limited to this; anyly be familiar with those skilled in the art in the technical scope that the utility model discloses; the variation that can expect easily or replacement are within all should being encompassed in protection range of the present utility model.Therefore, protection range of the present utility model should be as the criterion with the protection range of claim.
Claims (5)
1. lithium ion battery, it comprises lithium ion battery cell (2) and fin (1), it is characterized in that, respectively is closely fitted with fin (1) on the upper and lower surface of described battery core (2).
2. lithium ion battery according to claim 1, is characterized in that, described fin (1) is graphite material.
3. lithium ion battery according to claim 1, it is characterized in that, the one side of described fin (1) is the heat conductive insulating glue-line, is used for sticking on the surface of described battery core (2), there is the heat conductive insulating plastic layer on the opposite side surface of described fin (1), plays insulating effect.
4. lithium ion battery according to claim 1, is characterized in that, described lithium ion battery is flexible packing lithium ion battery.
5. lithium ion battery according to claim 1, is characterized in that, described battery core (2) plastic packaging that is fitted with fin (1) enters in aluminum plastic film.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012206018058U CN203013880U (en) | 2012-11-14 | 2012-11-14 | Lithium ion battery with graphite cooling fins |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012206018058U CN203013880U (en) | 2012-11-14 | 2012-11-14 | Lithium ion battery with graphite cooling fins |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203013880U true CN203013880U (en) | 2013-06-19 |
Family
ID=48605440
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012206018058U Expired - Lifetime CN203013880U (en) | 2012-11-14 | 2012-11-14 | Lithium ion battery with graphite cooling fins |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203013880U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104810556A (en) * | 2014-09-02 | 2015-07-29 | 万向A一二三系统有限公司 | Soft package battery structure |
| CN108183281A (en) * | 2017-12-28 | 2018-06-19 | 力神动力电池系统有限公司 | The lithium ion battery of radiator structure is set in a kind of |
| CN110739507A (en) * | 2019-11-20 | 2020-01-31 | 四川新敏雅电池科技有限公司 | Heat dissipation film for lithium battery and lithium battery |
-
2012
- 2012-11-14 CN CN2012206018058U patent/CN203013880U/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104810556A (en) * | 2014-09-02 | 2015-07-29 | 万向A一二三系统有限公司 | Soft package battery structure |
| CN108183281A (en) * | 2017-12-28 | 2018-06-19 | 力神动力电池系统有限公司 | The lithium ion battery of radiator structure is set in a kind of |
| CN110739507A (en) * | 2019-11-20 | 2020-01-31 | 四川新敏雅电池科技有限公司 | Heat dissipation film for lithium battery and lithium battery |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20130619 |