CN202585677U - Battery device - Google Patents
Battery device Download PDFInfo
- Publication number
- CN202585677U CN202585677U CN2012201400455U CN201220140045U CN202585677U CN 202585677 U CN202585677 U CN 202585677U CN 2012201400455 U CN2012201400455 U CN 2012201400455U CN 201220140045 U CN201220140045 U CN 201220140045U CN 202585677 U CN202585677 U CN 202585677U
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- China
- Prior art keywords
- layer
- phase
- temperature
- cell apparatus
- phase transformation
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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
Abstract
The utility model discloses a battery device. The battery device comprises an isolating membrane with a temperature regulating function, wherein the isolating membrane comprises an isolating membrane base material and a phase-change particle layer, the phase-change particle layer is adhered to the surface of the isolating membrane base material, the phase-change particle layer comprises a nuclear layer and a shell layer wrapped outside the nuclear layer, the nuclear layer is a phase-change material layer, and the shell layer is a ceramic material layer. The battery device disclosed by the utility model ensures that operating temperature can be controlled within a specific range by utilizing the phase-change particle layer with the temperature regulating function, which is coated on the surface of the isolating membrane base material, increases the temperature by supplying heat energy when the operating temperature is excessively low and decreases the temperature by absorbing superfluous heat when the temperature is excessively high, thereby increasing the operating efficiency of the battery device and prolonging the service life and improving the safety property of the battery device.
Description
Technical field
The utility model relates in particular to a kind of cell apparatus with barrier film of temp regulating function about a kind of cell apparatus.
Background technology
The quick increase of portable electronic industry causes the demand of battery to increase substantially, and the internal temperature increase of battery has simultaneously caused a large amount of problems.For example, the thermal conductance that produces of battery charging/discharging is sent a telegraph the pond and under than other outside high temperature, is worked in normal working conditions.Therefore, this high temperature of generation during battery operated causes battery to be degenerated rapidly.In addition, the violent rising of internal temperature of battery is the main factor of battery explosion under the non-normal working condition.
Although the heating in the certain limit has the operation that helps battery, concerning the useful life and security performance of battery, it is inappropriate surpassing the temperature of particular range and the violent increase of battery temperature.At present existing a lot of methods are used to solve this type of problem; For example comprise fire retardant is joined in the specific structure unit of battery; Or when battery temperature is higher than specified temp, make the electrolyte sclerosis, with the battery explosion risk that prevents to raise and cause suddenly owing to battery temperature.Yet these methods can be used as the measure that under the non-normal working condition, prevents battery explosion, but can not suppress during the battery operate as normal to heat up.And these methods are irreversible to the change of battery status, can cause battery not re-use.
The utility model content
Therefore; One of purpose of the utility model is to provide a kind of cell apparatus; Let the operational temperature of cell apparatus can be controlled in the particular range, operational temperature is crossed and can be given heat energy when low and rise by temperature, and heat that can absorbing redundant when temperature is too high descends by temperature.
For reaching above-mentioned purpose; The utility model provides a kind of cell apparatus, and this cell apparatus comprises the barrier film with temp regulating function, and this barrier film comprises barrier film base material and phase transformation particle layer; This phase transformation particle layer is adhered to the surface of this barrier film base material; This phase transformation particle layer comprises stratum nucleare and is coated on the outer shell of this stratum nucleare, and this stratum nucleare is a phase-change material layer, and this shell is a ceramic material layer.
As optional technical scheme, this ceramic material layer is a silicon dioxide layer.
As optional technical scheme, the phase transformation particle in this phase transformation particle layer is coated on the surface of this barrier film base material through after mixing with sticker.
As optional technical scheme, this phase-change material layer is paraffin layer, laurate layer or stearic acid layer.
5. cell apparatus as claimed in claim 1, the phase change temperature that it is characterized in that this phase-change material layer are 10 ℃-70 ℃.
As optional technical scheme, this cell apparatus is a lithium ion battery.
As optional technical scheme, the particle diameter 0.1-1000 micron of the phase transformation particle in this phase transformation particle layer.
Compared with prior art; The cell apparatus of the utility model is utilized on its barrier film substrate surface of electricity and is coated with the phase transformation particle layer that one deck has temp regulating function; Let operational temperature can be controlled in the particular range; Operational temperature is crossed and can be given heat energy when low and rise by temperature, and heat that can absorbing redundant when temperature is too high descends by temperature, thereby increases the cell apparatus operational effectiveness and improve the useful life and the security performance of cell apparatus.
Can detail and appendedly graphicly further understood by following utility model about the advantage of the utility model and spirit.
Description of drawings
Shown in Figure 1 is structural representation according to the cell apparatus of the utility model;
Shown in Figure 2 be according to the utility model the structural representation of barrier film;
Shown in Figure 3 is structural representation according to the phase transformation particle of the utility model.
Embodiment
See also Fig. 1, shown in Figure 1 is structural representation according to the cell apparatus of the utility model.The utility model provides a kind of cell apparatus 1, and this cell apparatus 1 comprises all kinds of primary cells and the secondary cell that is used for multiple different electronic product, and electronic product for example is notebook computer, electric bicycle and electric automobile etc.In addition, this cell apparatus also can be applied to all types of batteries, no matter its shape is cylindrical, square or bag shape.In this execution mode; Cell apparatus 1 for example is a lithium ion battery; The composition of lithium ion battery 1 is made up of anodal 2, negative pole 3, electrolyte 4 and 5 of barrier films, and the running that discharges and recharges is to be accomplished via electrochemical reaction by anodal 2, negative pole 3 and electrolyte 4, and the operational temperature of lithium ion battery 1 has very significant effects; Cross when temperature and can cause the electrochemical reaction rate to descend when low; The decreased performance that discharges and recharges has the phenomenon of thermal explosion when surpassing out of contior scope if temperature is too high, further causes lithium ion battery 1 blast.But; See also Fig. 2 and Fig. 3, shown in Figure 2 be according to the utility model the structural representation of barrier film, shown in Figure 3 is structural representation according to the phase transformation particle of the utility model; The barrier film 5 of the lithium ion battery 1 of the utility model is for having the barrier film of temp regulating function; Barrier film 5 comprises barrier film base material 6 and phase transformation particle layer, and the phase transformation particle layer is adhered to the surface 61 of barrier film base material 6, that is the utility model has applied the phase transformation particle layer that one deck has temp regulating function on the surface 61 of barrier film base material 6; Wherein the phase transformation particle layer is formed by phase transformation particle 7; After for example phase transformation particle 7 and sticker being mixed, be coated on the surface 61 of barrier film base material 6, thereby form barrier film 5.Like this; Because the existence of phase transformation particle 7; Make the operational temperature of lithium ion battery 1 can be controlled in the particular range; Operational temperature is crossed and can be given heat energy when low and rise by temperature, heat that can absorbing redundant when temperature is too high by temperature under will, thereby increase the cell apparatus operational effectiveness and improve the useful life and the security performance of cell apparatus.
And in this execution mode, the phase transformation particle layer comprises stratum nucleare 71 and is coated on the shell 72 outside the stratum nucleare 71 that stratum nucleare 71 is a phase-change material layer, adopts phase-transition material to process; Shell 72 is a ceramic material layer, adopts ceramic material to process.Wherein, ceramic material layer for example is a silicon dioxide layer, and this makes shell 72 can have the characteristic of high temperature resistant degree.Phase-transition material is meant that those undergo phase transition (preferably become liquid phase from solid phase, vice versa) under specified temp (or claiming the phase change temperature), and its latent heat is higher than the material of the thermal capacity/unit temperature of the element that constitutes cell apparatus.Can adopt unification compound, mixture or the compound of multiple phase-transition material.The phase transformation of these materials comprises that specified temp issues the situation of biological reason phase transformation, also comprises the situation that two or more mixtures of material undergo phase transition through reversible chemical reaction under specified temp.Concrete phase-change material layer for example is paraffin layer, laurate layer or stearic acid layer, and certainly phase-transition material also can be polyethylene glycol, inorganic hydrate (Na for example
2HPO
412H
2O, Na
2SO
410H
2O and Zn (NO
3)
26H
2O).In these materials, paraffin is preferred especially, and is relatively more cheap because it has high relatively latent heat, and its phase change temperature can change through changing its mean molecule quantity easily.
And preferably, the phase change temperature of phase-change material layer is 10 ℃-70 ℃.With the phase-transition material is that paraffin is example; When lithium ion battery 1 operational temperature is lower than 10 ℃; Exothermic reaction can take place and give lithium ion battery 1 heat energy lifting temperature in the paraffin of stratum nucleare 71; When lithium ion battery 1 operational temperature was higher than 10 ℃, the endothermic reaction can take place and absorb lithium ion battery 1 heat energy reduction temperature in the paraffin of stratum nucleare 71.
In addition, the particle diameter of the phase transformation particle in the phase transformation particle layer is preferably the 0.1-1000 micron.See preferably have the small particle diameter phase-transition material of the per unit weight surface area that reaches from the angle of reaction temperature variation as early as possible.If yet the particle diameter of respective phase change formed material too hour, may run into the problem relevant and the particle coating is added the difficulty of barrier film, so particle diameter can suitably selection in above-mentioned scope with preparation phase change example.
And the thickness of shell 72 has no particular limits, as long as it can play the effect of the utility model.Consider the thermal conductivity and the morphological stability of shell 72, the thickness of shell 72 is preferably 0.01 to 10 micron scope.When the thickness of shell 72 was too thin, it was difficult to stably keep phase-transition material.Conversely, when the thickness of shell 72 was too thick, the heat conduction reduction wherein and the amount of phase-transition material reduced relatively.
Experimental example 1
(stratum nucleare is paraffin (Paraffin) carbon number 16 to get the phase transformation particle; Shell is a silicon dioxide) 26.9 grams, adhesive agent LA029.9 gram, curing agent LH015.3 gram and acetone 67.9 grams mix and stir the back standing and defoaming; With scraper coat the barrier film base material (material: individual layer PP, 20 microns of thickness, Gurley=10s/10ml) on; Insert the moulding of 80 ℃ of baking oven inner dryings, surface coated thickness is 4～5 microns; Measuring air penetrability with Ge Erlai (Gurley) air permeability appearance is 15s/10ml, measures with differential scanning calorimetry (being called for short DSC) and inhales exothermic reaction, and exothermic temperature is 16.5 ℃, and endothermic temperature is 18.5 ℃.
Experimental example 2～8
(stratum nucleare is a paraffin carbon number 16 to get the phase transformation particle; Shell is a silicon dioxide) 26.9 grams, adhesive agent LA029.9 gram, curing agent LH015.3 gram and acetone 67.9 grams mix and stir the back standing and defoaming; With scraper coat the barrier film base material (material: individual layer PP, 20 microns of thickness, Gurley=10s/10ml) on; Insert the moulding of 80 ℃ of baking oven inner dryings, surface coated thickness is 4～5 microns; Air penetrability and DSC measurement see also following table.
Table one, comparative example and experimental example experimental result
We can draw by table one: (1) temperature regulating range that is suction, exothermic temperature can be decided by the phase-transition material of stratum nucleare 71; (2) even barrier film base material (individual layer PP, individual layer PE and three layers) difference can both play thermoregulator effect behind its surface-coated phase transformation particle.
And the utility model adopts ceramic material as shell, and ceramic material is compared other material such as resin has: higher thermal endurance, the thermal cracking temperature of pottery can reach thousands of degree, and the resinae tolerance range is less than 1,000 degree; Higher hardness, this makes the phase transformation particle be difficult in the use being stressed and breaks, and causes the phase-transition material of stratum nucleare to expose or outflows, and increases practicality; The higher coefficient of heat conduction, the coefficient of heat conduction of general resinae is 0.2-0.5 watt/meter to be opened, and the coefficient of heat conduction of silicon dioxide is 1.5-1.6 watt/meter and opens; And thermal coefficient of expansion is lower, and the dimensional stability of ceramic material is preferable when being heated, and the rising-heat contracting-cold phenomenon is littler than resin.
In addition, as the housing of lithium ion battery 1, can adopt traditional lithium polymer battery used aluminium lamination compressing tablet and metal-back.No matter the internal structure of battery is a layered laminate or convoluted, and these battery container materials can both adopt.And generally but not restrictedly, be applied on the collector body through the slurry that will contain cathode active material, conductive agent and binding agent, dry then, make the negative electrode of lithium ion battery.Be applied on the collector body through the slurry that will contain anode active material, conductive agent and binding agent, dry then, make the anode of lithium ion battery.The anode active material that can be used for the utility model can be by crystal carbon class material such as high-graphitized native graphite and Delanium, with invisible carbon or the carbon class material with surface that amorphous carbon handles process.The electrolyte of lithium ion battery can adopt lithium salts is dissolved in the electrolyte in the organic solvent.Wherein organic solvent for example can adopt the mixed solvent of ethylene carbonate, propylene carbonate, diethyl carbonate, dimethyl carbonate etc., as lithium salts, and preferred practical LiClO
4, LiAsF
6, LiPF
6, LiBF
4Deng.
In sum; The cell apparatus of the utility model is utilized on its barrier film substrate surface of electricity and is coated with the phase transformation particle layer that one deck has temp regulating function; Let operational temperature can be controlled in the particular range; Operational temperature is crossed and can be given heat energy when low and rise by temperature, and heat that can absorbing redundant when temperature is too high descends by temperature, thereby increases the cell apparatus operational effectiveness and improve the useful life and the security performance of cell apparatus.
Claims (7)
1. a cell apparatus is characterized in that this cell apparatus comprises the barrier film with temp regulating function, and this barrier film comprises
The barrier film base material; And
The phase transformation particle layer, this phase transformation particle layer is adhered to the surface of this barrier film base material, and this phase transformation particle layer comprises stratum nucleare and is coated on the outer shell of this stratum nucleare, and this stratum nucleare is a phase-change material layer, and this shell is a ceramic material layer.
2. cell apparatus as claimed in claim 1 is characterized in that this ceramic material layer is a silicon dioxide layer.
3. cell apparatus as claimed in claim 1 is characterized in that phase transformation particle in this phase transformation particle layer through after mixing with sticker, is coated on the surface of this barrier film base material.
4. cell apparatus as claimed in claim 1 is characterized in that this phase-change material layer is paraffin layer, laurate layer or stearic acid layer.
5. cell apparatus as claimed in claim 1, the phase change temperature that it is characterized in that this phase-change material layer are 10 ℃-70 ℃.
6. cell apparatus as claimed in claim 1 is characterized in that this cell apparatus is a lithium ion battery.
7. cell apparatus as claimed in claim 1 is characterized in that the particle diameter 0.1-1000 micron of the phase transformation particle in this phase transformation particle layer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012201400455U CN202585677U (en) | 2012-04-01 | 2012-04-01 | Battery device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012201400455U CN202585677U (en) | 2012-04-01 | 2012-04-01 | Battery device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202585677U true CN202585677U (en) | 2012-12-05 |
Family
ID=47255055
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012201400455U Expired - Fee Related CN202585677U (en) | 2012-04-01 | 2012-04-01 | Battery device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202585677U (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105048022A (en) * | 2015-06-24 | 2015-11-11 | 合肥国轩高科动力能源股份公司 | Novel coating material for lithium ion battery and preparation method thereof |
| CN105355824A (en) * | 2015-12-11 | 2016-02-24 | 北京新能源汽车股份有限公司 | Power battery diaphragm and preparation method thereof as well as power battery comprising power battery diaphragm |
| CN108493509A (en) * | 2018-04-09 | 2018-09-04 | 江西恒动新能源有限公司 | A kind of application of novel heat-conducting material on dynamic lithium battery module and pack |
| CN108550720A (en) * | 2018-03-16 | 2018-09-18 | 深圳市前海星火同为科技有限公司 | A kind of navigation anticorrosion large-capacity battery and manufacturing method |
| DE102018116056A1 (en) * | 2018-07-03 | 2020-01-09 | Dr. Ing. H.C. F. Porsche Aktiengesellschaft | Galvanic cell and method for producing a galvanic cell |
-
2012
- 2012-04-01 CN CN2012201400455U patent/CN202585677U/en not_active Expired - Fee Related
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105048022A (en) * | 2015-06-24 | 2015-11-11 | 合肥国轩高科动力能源股份公司 | Novel coating material for lithium ion battery and preparation method thereof |
| CN105355824A (en) * | 2015-12-11 | 2016-02-24 | 北京新能源汽车股份有限公司 | Power battery diaphragm and preparation method thereof as well as power battery comprising power battery diaphragm |
| WO2017097266A1 (en) * | 2015-12-11 | 2017-06-15 | 北京新能源汽车股份有限公司 | Power cell diaphragm, preparation method therefor, and power cell comprising same |
| CN105355824B (en) * | 2015-12-11 | 2018-07-06 | 北京新能源汽车股份有限公司 | Power battery diaphragm, preparation method and include its power battery |
| CN108550720A (en) * | 2018-03-16 | 2018-09-18 | 深圳市前海星火同为科技有限公司 | A kind of navigation anticorrosion large-capacity battery and manufacturing method |
| CN108493509A (en) * | 2018-04-09 | 2018-09-04 | 江西恒动新能源有限公司 | A kind of application of novel heat-conducting material on dynamic lithium battery module and pack |
| DE102018116056A1 (en) * | 2018-07-03 | 2020-01-09 | Dr. Ing. H.C. F. Porsche Aktiengesellschaft | Galvanic cell and method for producing a galvanic cell |
| DE102018116056B4 (en) | 2018-07-03 | 2024-05-02 | Dr. Ing. H.C. F. Porsche Aktiengesellschaft | Galvanic cell for use in a vehicle, and method for producing a galvanic cell |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20121205 Termination date: 20160401 |