CN101572324A - Secondary battery with built-in controllable electric field and method for quickly charging and discharging same - Google Patents
Secondary battery with built-in controllable electric field and method for quickly charging and discharging same Download PDFInfo
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- CN101572324A CN101572324A CNA2009100329145A CN200910032914A CN101572324A CN 101572324 A CN101572324 A CN 101572324A CN A2009100329145 A CNA2009100329145 A CN A2009100329145A CN 200910032914 A CN200910032914 A CN 200910032914A CN 101572324 A CN101572324 A CN 101572324A
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- 230000005684 electric field Effects 0.000 title claims abstract description 110
- 238000007599 discharging Methods 0.000 title claims abstract description 52
- 238000000034 method Methods 0.000 title claims abstract description 11
- 239000003792 electrolyte Substances 0.000 claims abstract description 18
- ZSYNKHJUSDFTCQ-UHFFFAOYSA-N [Li].[Fe].P(O)(O)(O)=O Chemical compound [Li].[Fe].P(O)(O)(O)=O ZSYNKHJUSDFTCQ-UHFFFAOYSA-N 0.000 claims description 44
- 239000000463 material Substances 0.000 claims description 31
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 25
- 229910002804 graphite Inorganic materials 0.000 claims description 22
- 239000010439 graphite Substances 0.000 claims description 22
- 229910010707 LiFePO 4 Inorganic materials 0.000 claims description 20
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 claims description 17
- 239000003014 ion exchange membrane Substances 0.000 claims description 12
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 8
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 6
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 claims description 6
- 229910052744 lithium Inorganic materials 0.000 claims description 6
- 239000004411 aluminium Substances 0.000 claims description 5
- 229910052782 aluminium Inorganic materials 0.000 claims description 5
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 5
- 229910052742 iron Inorganic materials 0.000 claims description 4
- 238000002955 isolation Methods 0.000 claims description 4
- FYYHWMGAXLPEAU-UHFFFAOYSA-N Magnesium Chemical compound [Mg] FYYHWMGAXLPEAU-UHFFFAOYSA-N 0.000 claims description 3
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 claims description 3
- 229910052793 cadmium Inorganic materials 0.000 claims description 3
- BDOSMKKIYDKNTQ-UHFFFAOYSA-N cadmium atom Chemical compound [Cd] BDOSMKKIYDKNTQ-UHFFFAOYSA-N 0.000 claims description 3
- 229910052749 magnesium Inorganic materials 0.000 claims description 3
- 239000011777 magnesium Substances 0.000 claims description 3
- 229910052725 zinc Inorganic materials 0.000 claims description 3
- 239000011701 zinc Substances 0.000 claims description 3
- VAYTZRYEBVHVLE-UHFFFAOYSA-N 1,3-dioxol-2-one Chemical compound O=C1OC=CO1 VAYTZRYEBVHVLE-UHFFFAOYSA-N 0.000 claims description 2
- QGHDLJAZIIFENW-UHFFFAOYSA-N 4-[1,1,1,3,3,3-hexafluoro-2-(4-hydroxy-3-prop-2-enylphenyl)propan-2-yl]-2-prop-2-enylphenol Chemical group C1=C(CC=C)C(O)=CC=C1C(C(F)(F)F)(C(F)(F)F)C1=CC=C(O)C(CC=C)=C1 QGHDLJAZIIFENW-UHFFFAOYSA-N 0.000 claims description 2
- OIFBSDVPJOWBCH-UHFFFAOYSA-N Diethyl carbonate Chemical compound CCOC(=O)OCC OIFBSDVPJOWBCH-UHFFFAOYSA-N 0.000 claims description 2
- 229910019142 PO4 Inorganic materials 0.000 claims description 2
- 229910052802 copper Inorganic materials 0.000 claims description 2
- 239000010949 copper Substances 0.000 claims description 2
- MHCFAGZWMAWTNR-UHFFFAOYSA-M lithium perchlorate Chemical compound [Li+].[O-]Cl(=O)(=O)=O MHCFAGZWMAWTNR-UHFFFAOYSA-M 0.000 claims description 2
- 229910001496 lithium tetrafluoroborate Inorganic materials 0.000 claims description 2
- NBIIXXVUZAFLBC-UHFFFAOYSA-K phosphate Chemical compound [O-]P([O-])([O-])=O NBIIXXVUZAFLBC-UHFFFAOYSA-K 0.000 claims description 2
- 239000010452 phosphate Substances 0.000 claims description 2
- RUOJZAUFBMNUDX-UHFFFAOYSA-N propylene carbonate Chemical compound CC1COC(=O)O1 RUOJZAUFBMNUDX-UHFFFAOYSA-N 0.000 claims description 2
- 239000002904 solvent Substances 0.000 claims description 2
- 229910001486 lithium perchlorate Inorganic materials 0.000 claims 1
- 239000010406 cathode material Substances 0.000 abstract description 5
- 238000009413 insulation Methods 0.000 abstract description 2
- 239000010405 anode material Substances 0.000 abstract 1
- 230000007547 defect Effects 0.000 abstract 1
- 238000005342 ion exchange Methods 0.000 abstract 1
- 238000004904 shortening Methods 0.000 abstract 1
- 229910001416 lithium ion Inorganic materials 0.000 description 33
- HBBGRARXTFLTSG-UHFFFAOYSA-N Lithium ion Chemical compound [Li+] HBBGRARXTFLTSG-UHFFFAOYSA-N 0.000 description 22
- 239000005030 aluminium foil Substances 0.000 description 10
- 238000009792 diffusion process Methods 0.000 description 5
- 239000011889 copper foil Substances 0.000 description 4
- 238000010586 diagram Methods 0.000 description 4
- 239000002245 particle Substances 0.000 description 4
- 229920000642 polymer Polymers 0.000 description 4
- 229910052799 carbon Inorganic materials 0.000 description 3
- 239000013078 crystal Substances 0.000 description 3
- 239000012528 membrane Substances 0.000 description 3
- 229910009384 Li1-XFePO4 Inorganic materials 0.000 description 2
- 229910005055 Li1−XFePO4 Inorganic materials 0.000 description 2
- 229910010710 LiFePO Inorganic materials 0.000 description 2
- 229910052493 LiFePO4 Inorganic materials 0.000 description 2
- 229910018688 LixC6 Inorganic materials 0.000 description 2
- NBIIXXVUZAFLBC-UHFFFAOYSA-N Phosphoric acid Chemical group OP(O)(O)=O NBIIXXVUZAFLBC-UHFFFAOYSA-N 0.000 description 2
- 229910052751 metal Inorganic materials 0.000 description 2
- 230000005012 migration Effects 0.000 description 2
- 238000013508 migration Methods 0.000 description 2
- 229920003023 plastic Polymers 0.000 description 2
- 229910013063 LiBF 4 Inorganic materials 0.000 description 1
- 229910012851 LiCoO 2 Inorganic materials 0.000 description 1
- 229910014778 LiMn2O 4 Inorganic materials 0.000 description 1
- 229910013290 LiNiO 2 Inorganic materials 0.000 description 1
- 229910013870 LiPF 6 Inorganic materials 0.000 description 1
- QSNQXZYQEIKDPU-UHFFFAOYSA-N [Li].[Fe] Chemical compound [Li].[Fe] QSNQXZYQEIKDPU-UHFFFAOYSA-N 0.000 description 1
- 229910000147 aluminium phosphate Inorganic materials 0.000 description 1
- 230000004888 barrier function Effects 0.000 description 1
- 239000006258 conductive agent Substances 0.000 description 1
- 239000004020 conductor Substances 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 239000007770 graphite material Substances 0.000 description 1
- 150000002500 ions Chemical class 0.000 description 1
- 229910003002 lithium salt Inorganic materials 0.000 description 1
- 159000000002 lithium salts Chemical class 0.000 description 1
- 230000014759 maintenance of location Effects 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 229910021645 metal ion Inorganic materials 0.000 description 1
- 231100000252 nontoxic Toxicity 0.000 description 1
- 230000003000 nontoxic effect Effects 0.000 description 1
- 239000010450 olivine Substances 0.000 description 1
- 229910052609 olivine Inorganic materials 0.000 description 1
- 239000007774 positive electrode material Substances 0.000 description 1
- 230000006641 stabilisation Effects 0.000 description 1
- 238000011105 stabilization Methods 0.000 description 1
- 239000004575 stone Substances 0.000 description 1
- 238000004804 winding Methods 0.000 description 1
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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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- Secondary Cells (AREA)
- Battery Electrode And Active Subsutance (AREA)
Abstract
The invention provides a secondary battery with a built-in controllable electric field and a method for quickly charging and discharging the same. Anode materials and cathode materials are arranged in electrolytes on both sides of an ion exchange diaphragm of the battery respectively and connected with an anode and a cathode of the battery respectively; the secondary battery is characterized in that: the secondary battery with the built-in controllable electric field is provided with an electric field pole plate pair of which the inside is provided with an electric insulation, an A pole plate of the electric field pole plate pair is arranged on the outer side of the anode of the battery and insulated from the anode of the battery; and a B pole plate of the electric field pole plate pair is arranged on the outer side of the cathode of the battery and insulated from the cathode of the battery. The method for quickly charging and discharging the battery comprises the following steps that: when the battery is used, the voltage is applied between the A pole plate and the B pole plate of the electric field pole plate pair; in the discharging state, the polarities of the A pole plate and the B pole plate are opposite to the polarities of the anode and the cathode of the battery; and the in the charging state, the polarities of the A pole plate and the B pole plate are the same as the polarities of the anode and the cathode of the battery. The secondary battery and the method have the advantages of overcoming the defects of poor internal conductivity, bad low-temperature performance and impossible improvement of the quickly charging and discharging properties existing in the prior battery, keeping the discharging of the battery at a high potential for a long time, obviously shortening the charging time, and simultaneously obviously prolonging the service life of the battery.
Description
Technical field
(battery that can discharge and recharge is called: secondary cell) to the present invention relates to a kind of secondary cell of built-in electric field structure, especially by external circuit control secondary cell internal electric intensity, direction, form the lithium iron phosphoric acid battery or the high ferro cell device of quick charge and discharge.The invention still further relates to the method for quickly charging and discharging of the secondary cell of this built-in controllable electric field.
Background technology
Positive electrode as secondary cell mainly contains at present: LiCoO
2, LiMn2O
4, LiNiO
2, LiFePO
4, K2FeO
4, BaFeO
4Deng, and the negative material of lithium iron phosphoric acid battery mainly is a graphite, the high ferro cell negative material adopts zinc, aluminium, iron, cadmium and magnesium.These are formed in the metallic element of secondary battery positive electrode material, adopt LiFePO
4, K2FeO
4, BaFeO
4The secondary cell that positive electrode is made should be the most cheap.Another characteristics of lithium iron phosphoric acid battery are: capacity height, favorable charge-discharge cycle performance, output voltage stabilization, electrochemical stability be good, use in safety (not can because of overcharge, misoperations such as overdischarge and short circuit, and cause burning or blast), wide, nontoxic, the environmentally safe of operating temperature range.So adopt LiFePO
4, K2FeO
4, BaFeO
4Making anodal lithium iron and high ferro cell is present best big electric current outputting power battery.
Lithium iron phosphoric acid battery exists shortcoming mainly to be: the one, and inside battery poorly conductive, lithium ion diffusion velocity are slow, and during high power charging-discharging, actual specific capacity is low.Poorly conductive main at present employing interpolation organic carbon source and high volence metal ion are united the way of doping, improve the conductivity of material.Or employing nanometer LiFePO
4Crystal grain, thus the diffusion length of lithium ion in crystal grain reduced, but the slow problem of lithium ion diffusion velocity is not still solved up till now preferably.The 2nd, lithium iron phosphoric acid battery poor performance at low temperatures, generally speaking, for single only electric core, capability retention about 60～70% in the time of its 0 ℃, be 20～40% in the time of-10 ℃ when being 40～55% ,-20 ℃, such cryogenic property obviously can not satisfy the instructions for use of electrical source of power.Although pass through the whole bag of tricks, as: the doping of lithium position, iron position even phosphoric acid position improves the electric conductivity of ion, and, all can't realize the raising of lithium iron phosphoric acid battery fast charging and discharging characteristic by once or the particle diameter of second particle and the effective conductive reaction area of morphology control, add extra conductive agent and increase conductivity etc.And equally also there is above-mentioned shortcoming in high ferro cell.
Summary of the invention
To have lithium iron phosphoric acid battery and poor, the poor performance at low temperatures of high ferro cell inner conductive now in order overcoming, and can't to improve the fast charging and discharging characteristic.The invention provides a kind of " secondary cell of built-in controllable electric field ", the secondary battery device of this built-in controllable electric field can effectively improve inside battery conductivity and low-temperature characteristics, thereby makes the discharge of battery maintain the high potential level for a long time; And when charging, obviously shorten the charging interval.Simultaneously, the present invention has eliminated the pressure and the stress of inside battery, can obviously prolong the useful life of battery.Specifically, can effectively improve lithium iron phosphoric acid battery or high ferro cell inner conductive and low-temperature characteristics.Especially form a kind of lithium iron phosphoric acid battery and high ferro cell of fast charging and discharging characteristic.
Realize that the object of the invention technical scheme is:
A kind of secondary cell of built-in controllable electric field, be respectively arranged with positive electrode and negative material in the both sides of ion exchange membrane, this positive electrode and negative material all are arranged in the electrolyte, described positive electrode is connected with positive pole, the negative pole of battery respectively with negative material, it is characterized in that: the electric field pole plate that is provided with an in-built electrical isolation in the secondary cell of this built-in controllable electric field is right, the A pole plate of this electric field pole plate centering is arranged on the outside of described anode, and insulate with this anode; The B pole plate of this electric field pole plate centering is arranged on the outside of described battery cathode, and insulate with this battery cathode.
Described " in-built electrical isolate electric field pole plate " be meant should " built-in electric field pole plate to " not only respectively with two electrode insulations of battery, simultaneously also with battery in electrolyte insulate.
In other words, said structure of the present invention, its built-in controllable electric field secondary cell is in the traditional secondary battery structure, forms a controlled internal electric field, regulates and control the power and the direction of the positive pole and the negative pole electric field of traditional secondary battery.The traditional secondary battery structure mainly is made up of positive electrode, ion exchange membrane, electrolyte, negative material.In the built-in controllable electric field secondary battery construction, it is right to increase the electric field pole plate that in-built electrical isolates, its structure mainly by: electric field pole plate A, positive electrode, ion exchange membrane, electrolyte, negative material, electric field pole plate B are formed.
Same as the prior art, the normal employing of the electrolyte among the present invention has: solute; Commonly used have lithium salts, a lithium perchlorate (LiClO
4), lithium hexafluoro phosphate (LiPF
6), LiBF4 (LiBF
4).Solvent; Vinyl carbonate, propylene carbonate, diethyl carbonate etc.
Built-in controllable electric field secondary cell of the present invention can be applied in fast charging and discharging lithium iron phosphoric acid battery and fast charging and discharging high ferro cell.
That is, built-in controllable electric field secondary cell of the present invention, its positive electrode can be LiFePO
4, negative material can be graphite or titanate; The electric field pole plate that is provided with in-built electrical isolation of the present invention simultaneously is right.Constitute built-in controllable electric field secondary cell and fast charging and discharging lithium iron phosphoric acid battery thereof.
Built-in controllable electric field secondary cell of the present invention, its positive electrode can be ferrate (K2FeO
4, BaFeO
4Deng), negative material can be zinc, aluminium, iron, cadmium or magnesium; The electric field pole plate that is provided with in-built electrical isolation of the present invention simultaneously is right.Constitute built-in controllable electric field secondary cell and fast charging and discharging high ferro cell thereof.
The A pole plate and the B pole plate of the electric field pole plate centering among the present invention program all can adopt electric conducting materials such as copper, aluminium or graphite.
The scheme of finishing the 2nd goal of the invention of the application is: a kind of method for quickly charging and discharging of secondary cell of above-mentioned built-in controllable electric field: the secondary cell of described built-in controllable electric field in use, need electric field pole plate that described in-built electrical is isolated on (between the A utmost point, the B utmost point) apply voltage:
In discharge condition, the A pole plate of this electric field pole plate centering is opposite with the polarity of described anode; The B pole plate of this electric field pole plate centering is opposite with the polarity of described battery cathode.The external voltage that is applied is 6V～24V.Voltage is high more, can the above discharge of big electric current 20C.
In charged state, the A pole plate of this electric field pole plate centering is identical with the polarity of described anode; The B pole plate of this electric field pole plate centering is identical with the polarity of described battery cathode.The magnitude of voltage that is applied can be identical with the magnitude of voltage between anode, the negative pole.Voltage is high more, and charging current can the above charging of 20C.
Specifically: built-in controllable electric field secondary cell of the present invention and fast charging and discharging lithium iron phosphoric acid battery thereof are built-in controlled internal electric fields in traditional lithium iron phosphoric acid battery structure, and its structure is mainly by electric field pole plate A, positive electrode (LiFePO
4), ion exchange membrane, electrolyte, negative material (graphite or titanate), electric field pole plate B form.Traditional lithium iron phosphoric acid battery structure is mainly by positive electrode (LiFePO
4), ion exchange membrane, electrolyte, negative material (graphite) form.The existing lithium iron phosphoric acid battery structure of implementing both at home and abroad is by positive electrode aluminium foil 1.1, positive electrode (LiFePO
4) 1.2, ion exchange membrane 1.3, shell negative electrode 1.4, negative material (graphite) 1.5, electrolyte 1.6, negative electrode Copper Foil 1.7, positive electrode 1.8 form.Shown in accompanying drawing 1.
Fast charging and discharging lithium iron phosphoric acid cell apparatus of the present invention, its structure are mainly by electric field pole plate A, LiFePO
4Positive electrode, ion exchange membrane, electrolyte, graphite cathode material, electric field pole plate B form, shown in accompanying drawing 2.
Fast charging and discharging lithium iron phosphoric acid cell apparatus of the present invention, its structure are mainly by electric field pole plate A, LiFePO
4Positive electrode, ion exchange membrane, electrolyte, titanate negative material, electric field pole plate B form, shown in accompanying drawing 3.
Fast charging and discharging lithium iron phosphoric acid cell apparatus of the present invention, its fast charging and discharging operating circuit winding diagram is shown in accompanying drawing 5.
A kind of fast charging and discharging lithium iron phosphoric acid cell apparatus of the present invention, its fast charging and discharging curve chart is shown in accompanying drawing 6.
A kind of fast charging and discharging lithium iron phosphoric acid cell apparatus of the present invention can be composed in series a high-tension fast charging and discharging lithium iron phosphoric acid cell apparatus by the only electric core of a plurality of lists, shown in accompanying drawing 7.
The secondary cell of built-in controllable electric field of the present invention, existing lithium iron phosphoric acid battery and poor, the poor performance at low temperatures of high ferro cell inner conductive have been overcome, and can't improve the fast charging and discharging characteristic, the present invention can effectively improve inside battery conductivity and low-temperature characteristics, thereby makes the discharge of battery maintain the high potential level for a long time; And when charging, obviously shorten the charging interval.Simultaneously, the present invention has eliminated the pressure and the stress of inside battery, can obviously prolong the useful life of battery.Adopt the lithium iron phosphoric acid battery of titanate negative material, the charge and discharge cycles number of times is greater than 8000 times.Traditional lithium iron phosphoric acid battery charging and discharging cycle-index is 3000 times.
Description of drawings
Fig. 1 is existing lithium iron phosphoric acid battery structure schematic diagram;
Fig. 2 is fast charging and discharging lithium iron phosphoric acid battery of the present invention (graphite cathode) structure principle chart;
Fig. 3 is fast charging and discharging lithium iron phosphoric acid battery of the present invention (titanate negative pole) structure principle chart;
Fig. 4 is graphite cathode material of the present invention and titanate negative material operation principle schematic diagram;
Fig. 5 is the battery operated circuit interconnect pattern of fast charging and discharging lithium iron phosphoric acid of the present invention;
Fig. 6 is a fast charging and discharging lithium iron phosphoric acid battery charging and discharging curve chart of the present invention;
Fig. 7 is the only electric core series connection of a plurality of lists of the present invention fast charging and discharging lithium iron phosphoric acid battery structure figure.
Embodiment
Embodiment 1
With reference to shown in Figure 2, a kind of built-in controllable electric field secondary cell and fast charging and discharging lithium iron phosphoric acid cell apparatus thereof are by positive electrode aluminium foil 2.1, electric field electrode A 2.2, aluminium foil plate A 2.3, dielectric film 2.4, positive electrode (LiFePO
4) 2.5, ion exchange membrane 2.6, shell negative electrode 2.7, negative material (graphite) 2.8, dielectric film 2.9, aluminium foil plate B 2.10, electrolyte 2.11, electric field electrode B 2.12, negative electrode Copper Foil 2.13, positive electrode 2.14 form.Fast charging and discharging lithium iron phosphoric acid cell apparatus externally is electrically connected and has 4 electrode tips, is respectively battery positive electrode and negative electrode, and electric field electrode A and electric field electrode B.The battery positive electrode is to connect load and the corresponding electrode tip that is connected charging circuit with negative electrode.And electric field electrode A is to be connected the electric field power supply with electric field electrode B, forms the power and the direction of controlled inside battery electric field, carries out fast charging and discharging.
With reference to Fig. 2, shown in Figure 5, the operation principle of present embodiment a kind of built-in controllable electric field secondary cell and fast charging and discharging lithium iron phosphoric acid cell apparatus thereof is:
● anodal reaction: lithium ion embeds during discharge, and lithium ion takes off embedding during charging.
During charging: LiFePO4 → Li1-xFePO4+xLi++xe-
During discharge: Li1-xFePO4+xLi++xe-→ LiFePO4
● negative reaction: lithium ion takes off slottingly during discharge, and lithium ion inserts during charging.
Negative material: adopt graphite material (or titanate).
During charging: xLi++xe-+6C → LixC6
During discharge: LixC6 → xLi++xe-+6C
Shown in accompanying drawing 2, fast charging and discharging LiFePO
4The internal structure of battery.Sorting successively in the left side is that electric field electrode A connects the electric field aluminium foil pole plate A in the dielectric film, the LiFePO of the olivine structural that is connected with the battery positive electrode by anodal aluminium foil
4Anode, the centre is the ion exchange membrane of polymer, it separates with negative pole anodal, but lithium ion Li+ can by and electronics e-can not pass through, the battery cathode that the right is made up of carbon (graphite), be connected with the negative electrode of battery by Copper Foil, electric field electrode B connects the electric field aluminium foil pole plate B in the dielectric film.Be the electrolyte of battery between the upper and lower side of battery, battery is by the metal shell enclosed package.LiFePO
4Battery is when charging, and the lithium ion Li+ in the positive pole moves to negative pole by membrane for polymer; In discharge process, the lithium ion Li+ in the negative pole moves to positive pole by barrier film.Lithium ion battery is named because of lithium ion (positively charged) moves when discharging and recharging back and forth.
Shown in accompanying drawing 5, electric field electrode A and electric field electrode B connect power supply V1 by duplex diverter switch K1, and the battery positive electrode is connected load and charge power supply V2 with the battery negative electrode by simply connected diverter switch K2.
When K switch 1 switches to charge position, electric field electrode A energized V1 anodal with electric field electrode B energized V1 negative pole, lithium iron phosphoric acid battery LiFePO
4A stronger electric field E is arranged between positive pole and the graphite cathode, and electric field E direction is from LiFePO
4The anodal graphite cathode that points to.This moment, K switch 2 switched to charge position, and lithium iron phosphoric acid battery is when charging, and electric field E has strengthened LiFePO
4The repulsive force of lithium ion Li+ in the positive pole, lithium ion Li+ are by membrane for polymer, and lithium ion Li+ attracts migration to graphite cathode, have greatly improved conductance and have accelerated lithium ion Li+ diffusion velocity, form quick constant voltage charge.
When K switch 1 switches to discharge position, electric field electrode A energized V1 negative pole and electric field electrode B energized V1 positive pole, lithium iron phosphoric acid battery LiFePO
4A stronger electric field E is arranged between positive pole and the graphite cathode, and electric field E direction is pointed to LiFePO from graphite cathode
4Anodal.This moment, K switch 2 switched to the load discharge position, and lithium iron phosphoric acid battery is in when discharge, electric field E strengthen in the graphite cathode lithium ion Li+ take off insert row repulsion, lithium ion Li+ is by membrane for polymer, lithium ion Li+ is to LiFePO
4Anodal migration embeds, and has greatly improved conductance and has accelerated lithium ion Li+ diffusion velocity, forms repid discharge.
Embodiment 2
With reference to shown in Figure 3, a kind of built-in controllable electric field secondary cell and fast charging and discharging lithium iron phosphoric acid cell apparatus thereof are by positive electrode aluminium foil 3.1, electric field electrode A3.2, aluminium foil plate A3.3, dielectric film 3.4, positive electrode (LiFePO
4) 3.5, ion exchange membrane 3.6, shell negative electrode 3.7, negative material (titanate) 3.8, dielectric film 3.9, aluminium foil plate B 3.10, electrolyte 3.11, electric field electrode B 3.12, negative electrode Copper Foil 3.13, positive electrode 3.14 form.Fast charging and discharging lithium iron phosphoric acid cell apparatus externally is electrically connected and has 4 electrode tips, is respectively battery positive electrode and negative electrode, and electric field electrode A and electric field electrode B.The battery positive electrode is to connect load and the corresponding electrode tip that is connected charging circuit with negative electrode.And electric field electrode A is to be connected the electric field power supply with electric field electrode B, forms the power and the direction of controlled inside battery electric field, carries out fast charging and discharging.
The operation principle of present embodiment 2 one kinds of built-in controllable electric fields secondary cell and fast charging and discharging lithium iron phosphoric acid cell apparatus thereof is identical with embodiment 1 operation principle.
The embodiment of the invention 2 described a kind of fast charging and discharging lithium iron phosphoric acid cell apparatus, its graphite cathode material and titanate negative material main difference feature are: at battery charging and discharging in the lifetime, it is tired that the electric power of this repetition (moving and tension force) can make graphite plane produce, and finally cause graphite-structure cracked.These cracked meetings cause electric contact disconnection between particle, thereby reduce the energy of battery, finally shorten its useful life.Replace graphite with titanate oxide (as: lithium titanate oxide nLTO), make titanate oxide become ' zero tension force ' negative material.Like this, when lithium ion enters and leave titanate oxide, just can not change the shape of material.The lithium titanate oxide material is three-dimensional crystal structure.This structure has the space that holds lithium ion, and its size is suitable substantially with atom.Just can not produce pressure or stress like this in charging and discharge process, make that battery can be than traditional lithium battery and lithium iron phosphoric acid battery, fast charging and discharging that can be more frequent does not exist the image-stone ink material can cause the particle fatigue of damage like that yet.As negative material, can prolong battery useful life with titanate oxide greatly.Graphite cathode material and the stressed schematic diagram of titanate negative material work are shown in accompanying drawing 4.
Embodiment 3
Shown in accompanying drawing 7, the only electric core of a kind of a plurality of lists of the present invention is composed in series a high-tension fast charging and discharging lithium iron phosphoric acid cell apparatus and puts controllable electric field secondary cell 4.1, battery positive electrode 4.2, battery plus-negative plate 4.3, electric field electrode A4.4, electric field electrode B 4.5, plastic casing 4.6, plastic cover plate 4.7, electric field electrode line 4.8, battery positive and negative electrode line 4.9 by: single in-core and formed.
Claims (7)
1, a kind of secondary cell of built-in controllable electric field, be respectively arranged with positive electrode and negative material in the both sides of ion exchange membrane, this positive electrode and negative material all are arranged in the electrolyte, described positive electrode is connected with positive pole, the negative pole of battery respectively with negative material, it is characterized in that, the electric field pole plate that is provided with an in-built electrical isolation in the secondary cell of this built-in controllable electric field is right, the A pole plate of this electric field pole plate centering is arranged on the outside of described anode, and insulate with this anode; The B pole plate of this electric field pole plate centering is arranged on the outside of described battery cathode, and insulate with this battery cathode.
2, the secondary cell of built-in controllable electric field according to claim 1 is characterized in that, described electrolyte is: described electrolyte solute is selected from: lithium perchlorate, lithium hexafluoro phosphate or LiBF4; Described electrolyte solvent is selected from: vinyl carbonate, propylene carbonate or diethyl carbonate.
3, the secondary cell of built-in controllable electric field according to claim 1 is characterized in that, the A pole plate of described electric field pole plate centering and B pole plate adopt copper, aluminium or graphite.
According to the secondary cell of claim 1 or 2 or 3 described built-in controllable electric fields, it is characterized in that 4, described positive electrode is LiFePO
4, negative material is graphite or titanate; Constitute built-in controllable electric field secondary cell and fast charging and discharging lithium iron phosphoric acid battery thereof.
According to the secondary cell of claim 1 or 2 or 3 described built-in controllable electric fields, it is characterized in that 5, described positive electrode is a ferrate; Described negative material is zinc, aluminium, iron, cadmium or magnesium; Constitute built-in controllable electric field secondary cell and fast charging and discharging high ferro cell thereof.
6, the method for quickly charging and discharging of the secondary cell of the described built-in controllable electric field of a kind of claim 1, it is characterized in that, the secondary cell of described built-in controllable electric field applies voltage in use between the right A utmost point of the electric field pole plate that described in-built electrical is isolated, the B utmost point:
In discharge condition, the A pole plate of this electric field pole plate centering is opposite with the polarity of described anode; The B pole plate of this electric field pole plate centering is opposite with the polarity of described battery cathode;
In charged state, the A pole plate of this electric field pole plate centering is identical with the polarity of described anode; The B pole plate of this electric field pole plate centering is identical with the polarity of described battery cathode.
7, the method for quickly charging and discharging of the secondary cell of built-in controllable electric field according to claim 6 is characterized in that, single cell battery is in discharge condition, and the described external voltage that applies is 6V～24V;
Single cell battery is in charged state, and the magnitude of voltage that is applied is identical with magnitude of voltage between anode, the negative pole.
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| CN2009100329145A CN101572324B (en) | 2009-06-01 | 2009-06-01 | Secondary battery with built-in controllable electric field and method for quickly charging and discharging same |
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| CN101572324A true CN101572324A (en) | 2009-11-04 |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN101764420B (en) * | 2009-12-31 | 2012-12-05 | 郭建国 | Quick-charging intelligent balanced managing device for electric field type secondary battery |
| CN103427112A (en) * | 2013-08-22 | 2013-12-04 | 郭建国 | Controlled electric field effect charge-discharge sodium ion battery and rapid charge-discharge method thereof |
| WO2015062084A1 (en) * | 2013-11-01 | 2015-05-07 | 上海足力新能源科技有限公司 | Battery and battery pack comprising the battery |
| CN105576286A (en) * | 2016-03-03 | 2016-05-11 | 电子科技大学 | Quick-charging lithium ion secondary battery and using method thereof |
| CN107331903A (en) * | 2017-06-28 | 2017-11-07 | 郭建国 | A kind of three terminal field effect mode lead-acid accumulators and its charging/discharging thereof |
| CN108242545A (en) * | 2018-01-08 | 2018-07-03 | 绵阳德远英科技有限责任公司 | Cathode conducive to lithium ion battery quick charge and the lithium ion battery based on this |
| DE102018115339A1 (en) | 2018-06-26 | 2020-01-02 | Volkswagen Aktiengesellschaft | Rechargeable battery |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1525588A (en) * | 2003-09-17 | 2004-09-01 | 胡大林 | A method for facilitating chemical reaction progress in fuel cell |
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- 2009-06-01 CN CN2009100329145A patent/CN101572324B/en not_active Expired - Fee Related
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101764420B (en) * | 2009-12-31 | 2012-12-05 | 郭建国 | Quick-charging intelligent balanced managing device for electric field type secondary battery |
| CN103427112A (en) * | 2013-08-22 | 2013-12-04 | 郭建国 | Controlled electric field effect charge-discharge sodium ion battery and rapid charge-discharge method thereof |
| WO2015062084A1 (en) * | 2013-11-01 | 2015-05-07 | 上海足力新能源科技有限公司 | Battery and battery pack comprising the battery |
| CN105576286A (en) * | 2016-03-03 | 2016-05-11 | 电子科技大学 | Quick-charging lithium ion secondary battery and using method thereof |
| CN107331903A (en) * | 2017-06-28 | 2017-11-07 | 郭建国 | A kind of three terminal field effect mode lead-acid accumulators and its charging/discharging thereof |
| CN108242545A (en) * | 2018-01-08 | 2018-07-03 | 绵阳德远英科技有限责任公司 | Cathode conducive to lithium ion battery quick charge and the lithium ion battery based on this |
| DE102018115339A1 (en) | 2018-06-26 | 2020-01-02 | Volkswagen Aktiengesellschaft | Rechargeable battery |
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