CN104916848A - Method for improving battery low-temperature starting performance - Google Patents
Method for improving battery low-temperature starting performance Download PDFInfo
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- CN104916848A CN104916848A CN201510223901.1A CN201510223901A CN104916848A CN 104916848 A CN104916848 A CN 104916848A CN 201510223901 A CN201510223901 A CN 201510223901A CN 104916848 A CN104916848 A CN 104916848A
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- 238000000034 method Methods 0.000 title claims abstract description 34
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims abstract description 129
- 229910002804 graphite Inorganic materials 0.000 claims abstract description 124
- 239000010439 graphite Substances 0.000 claims abstract description 124
- 238000010438 heat treatment Methods 0.000 claims abstract description 22
- 229910052751 metal Inorganic materials 0.000 claims abstract description 13
- 239000002184 metal Substances 0.000 claims abstract description 13
- 239000000123 paper Substances 0.000 claims description 116
- 229910001416 lithium ion Inorganic materials 0.000 claims description 19
- 150000001875 compounds Chemical class 0.000 claims description 15
- 229920002994 synthetic fiber Polymers 0.000 claims description 14
- 239000004758 synthetic textile Substances 0.000 claims description 14
- HBBGRARXTFLTSG-UHFFFAOYSA-N Lithium ion Chemical compound [Li+] HBBGRARXTFLTSG-UHFFFAOYSA-N 0.000 claims description 13
- -1 polypropylene Polymers 0.000 claims description 12
- 238000005485 electric heating Methods 0.000 claims description 9
- 239000004743 Polypropylene Substances 0.000 claims description 8
- 229920001155 polypropylene Polymers 0.000 claims description 8
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 claims description 6
- 229910021389 graphene Inorganic materials 0.000 claims description 5
- 239000004952 Polyamide Substances 0.000 claims description 4
- 239000004698 Polyethylene Substances 0.000 claims description 4
- 239000006260 foam Substances 0.000 claims description 4
- 150000002739 metals Chemical class 0.000 claims description 4
- 229920002647 polyamide Polymers 0.000 claims description 4
- 229920000728 polyester Polymers 0.000 claims description 4
- 229920000573 polyethylene Polymers 0.000 claims description 4
- 239000011148 porous material Substances 0.000 claims description 4
- 229910052759 nickel Inorganic materials 0.000 claims description 3
- 239000007772 electrode material Substances 0.000 abstract description 9
- 239000000463 material Substances 0.000 abstract description 5
- 238000002360 preparation method Methods 0.000 abstract description 3
- 239000008151 electrolyte solution Substances 0.000 abstract 2
- 239000003792 electrolyte Substances 0.000 description 14
- 230000007423 decrease Effects 0.000 description 6
- 230000010287 polarization Effects 0.000 description 6
- 239000002253 acid Substances 0.000 description 5
- 239000010949 copper Substances 0.000 description 4
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 3
- 229910010710 LiFePO Inorganic materials 0.000 description 3
- 229910010707 LiFePO 4 Inorganic materials 0.000 description 3
- 229910018095 Ni-MH Inorganic materials 0.000 description 3
- 229910018477 Ni—MH Inorganic materials 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 239000007943 implant Substances 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 239000004411 aluminium Substances 0.000 description 2
- 229910052782 aluminium Inorganic materials 0.000 description 2
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 2
- 230000004888 barrier function Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 2
- 239000010406 cathode material Substances 0.000 description 2
- 238000007796 conventional method Methods 0.000 description 2
- 239000011889 copper foil Substances 0.000 description 2
- 238000013461 design Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000036632 reaction speed Effects 0.000 description 2
- 239000005030 aluminium foil Substances 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 230000000052 comparative effect Effects 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 238000003487 electrochemical reaction Methods 0.000 description 1
- 238000003411 electrode reaction Methods 0.000 description 1
- 238000006056 electrooxidation reaction Methods 0.000 description 1
- 238000004146 energy storage Methods 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 239000000295 fuel oil Substances 0.000 description 1
- 150000002500 ions Chemical class 0.000 description 1
- 238000002955 isolation Methods 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
- 239000005486 organic electrolyte Substances 0.000 description 1
- 230000000704 physical effect Effects 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 230000001737 promoting effect Effects 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
- 150000003839 salts Chemical class 0.000 description 1
- 239000002904 solvent Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000012546 transfer Methods 0.000 description 1
- 238000005406 washing Methods 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M4/00—Electrodes
- H01M4/02—Electrodes composed of, or comprising, active material
- H01M4/64—Carriers or collectors
- H01M4/66—Selection of materials
- H01M4/663—Selection of materials containing carbon or carbonaceous materials as conductive part, e.g. graphite, carbon fibres
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/05—Accumulators with non-aqueous electrolyte
- H01M10/052—Li-accumulators
- H01M10/0525—Rocking-chair batteries, i.e. batteries with lithium insertion or intercalation in both electrodes; Lithium-ion batteries
-
- 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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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Manufacturing & Machinery (AREA)
- Battery Electrode And Active Subsutance (AREA)
- Secondary Cells (AREA)
Abstract
The invention discloses a method for improving battery low-temperature starting performance, and relates to the method for improving the battery starting performance in a low temperature environment. The invention aims to solve problems that a conventional battery has low voltage and discharge capacity and poor use performance during low-temperature starting. Under conditions without changing a battery material and an electrolyte solution and without significantly changing an internal structure and preparation processes, flexible graphite paper entirely or partly replaces a metal to be used as an electrode current collector, or the graphite paper is directly placed between a positive electrode and a negative electrode to be used as an electrical heating element, an external-connection power source is applied to the graphite paper to make the graphite paper rapidly heated, so that the electrode material and the electrolyte solution are rapidly heated, the battery internal temperature rises rapidly, the battery discharge voltage and the battery discharge capacity can be close to room temperature values in a short period of time, and the problem of substantial attenuation of the performance during the battery low-temperature starting is effectively solved. The method is used in the field of secondary batteries.
Description
Technical field
The present invention relates to a kind of method improving battery low-temperature startup performance.
Background technology
All there is a common problem in current various secondary cell, be exactly at low ambient temperatures its performance be comparatively significantly deteriorated under normal temperature, be in particular in that discharge voltage declines to a great extent, discharge capacity declines to a great extent, charging rate significantly reduces, cause battery at low ambient temperatures battery capacity can not get effective performance, design and use requirement cannot be met.Such as lithium ion battery only has about 50% of room temperature capacity at-40 DEG C of discharge capacity, substantially cannot start at-50 DEG C; Lead-acid battery temperature there is not decline 1 degree, capacity attenuation about 1%.Battery cryogenic property not good, seriously constrains the promoting the use of on northern cold ground such as electric automobile, electric bus, electric bicycle, makes conventional fuel oil automobile starting difficulty, and military special type battery is difficult to ensure the operational need etc. in extremely cold area.Therefore, the method for exploitation raising battery cryogenic property is extremely important.
The principal element affecting battery cryogenic property has: under (1) low temperature, the ion transfer of electrolyte declines, and the viscosity comprising solvent under low temperature increases, and ionic mobility reduces, and causes conductivity to reduce, ohmic polarization increase; , there is local-crystalized phenomenon in electrolytic salt solubility decline at low temperatures simultaneously; In addition, electrolyte is participated in the battery of reaction, as lead-acid battery and Ni-MH battery etc., under low temperature, concentration polarization increases.(2) low temperature bottom electrode reaction rate is slack-off, causes the electrochemical polarization of both positive and negative polarity to aggravate.For lithium ion battery, under low temperature, reaction speed decline is deviate from the embedding of lithium ion in positive and negative pole material; For lead-acid battery and Ni-MH battery, under low temperature, the electrochemical reaction speed of its positive pole and negative pole declines.The aggravation of the electrochemical polarization that above-mentioned low temperature causes, concentration polarization and ohmic polarization degree, causes cell discharge voltage, discharge capacity and large multiplying power discharging property all to occur significant decline.For these reasons, current raising battery cryogenic property is mainly started with from each composition material of inside battery and is researched and solved scheme, comprise electrode material, new electrolyte system that exploitation is new, and optimize the preparation technology etc. of battery, the progress of current this respect is very slow.Another resolving ideas installs pre-heating system additional to outside batteries, this increases the weight and volume of battery on the one hand, add the complexity of battery system, bring inconvenience to the use of battery, heat ecto-entad simultaneously, heat slow and uneven, effectively neither solve the method for battery cryogenic property.Therefore, exploitation simply realizes from inside battery the problem that method that electrode material and electrolyte is rapidly heated can solve battery low temperature, thus the ambient adaptability improving battery is most important.The Low Temperature Problems of battery, mainly goes out at the start battery initial stage, and after normal battery operation, its heat produced can maintain battery and work at the temperature be suitable for.
Ultra-thin flexible graphite paper is with forming through special process compacting by swollen graphite.Its density is about 1.0g/cm
3to 1.8g/cm
3, lighter than aluminium by 25%, lighter than copper by 75%.Have excellent thermal endurance and cold resistance, in-200 DEG C ~ temperature range of 450 DEG C (in oxide isolations), its physical property does not almost have anything to change; There is excellent chemically-resistant and electrochemical corrosion performance and conductivity simultaneously; Its in-plane thermal conductivity can reach 1200W/mK and heat conduction is even; Can smoothly be attached to any surface and curved surface, and shape can be changed according to demand.Significantly, ultrathin flexible graphite paper or a kind of splendid electroluminescent exothermic material, under the effect of direct voltage, can realize heat effect rapidly and uniformly, can realize temperature rise more than 40 degree in a few second.These character above-mentioned make ultrathin flexible graphite paper as the electric heating element of inside battery, can be equipped with additional power source, realize battery temperature and promote evenly and rapidly.
Summary of the invention
The present invention be to solve existing battery cold-starting during voltage and discharge capacity low, the problem that serviceability is not good, provides the method improving battery low-temperature startup performance.
The present invention improves the method for battery low-temperature startup performance, is specially:
For adopting metal forming to be the lithium ion battery of collector, with flexible graphite paper alternative metals paper tinsel as collector, be connected directly between by external power supply on the lug of graphite paper collector, control heating voltage scope 1 ~ 220V, the thickness of described flexible graphite paper is 0.01 ~ 1.0mm.
Because electrode material directly contacts with graphite paper collector with electrolyte, thus realize the rapid and uniform heating to the whole battery core of battery.
The present invention's another kind improves the method for battery low-temperature startup performance, is specially:
For using the battery that screen or foam metal are collector, using the flexible graphite paper with hole as electric heating element, be placed between the positive pole of battery and negative pole, brace is drawn separately from flexible graphite paper, external power supply is connected directly between on the brace of graphite paper, control heating voltage scope 1 ~ 220V, the diameter of described hole is 0.01 ~ 1mm, pore area accounting 10% ~ 60%, porous nickel is distributed in in the scope of electrode slice equidimension on flexible graphite paper, and the thickness of described flexible graphite paper is 0.01 ~ 1.0mm.
Because electrolyte directly contacts with graphite paper heating plate, first electrolyte be heated rapidly, and then drives electrode material to heat up, thus realize the rapid rising of internal temperature of battery.
External power supply directly can adopt ultracapacitor, can utilize the capacity of battery itself, can utilize the charge power supply etc. of battery.
The battery that screen or foam metal are collector is used to have lead-acid battery, Ni-MH battery etc.
Essence of the present invention introduces flexible graphite paper as heating element at inside battery, simultaneously also can as a part for battery (collector), additional power source or battery self is utilized to provide electric energy, utilize the electric heating property of graphite paper excellence, make flexible graphite paper rapid temperature increases at short notice, thus realize, from inside battery to battery Fast Heating, solving the shortcoming of battery poor performance at low temperatures.
Beneficial effect of the present invention:
(1) flexible graphite paper is comparatively light, alternative metals collector, is conducive to the specific energy improving energy-storage travelling wave tube.Its machining property is good, can not generate burr and pierce through barrier film.Mechanical flexibility is good, can do any type of processing according to demand;
(2) flexible graphite paper is as a kind of electric heating element, and its heat production is even, and heat production is fast.Because flexible graphite paper directly implants inside battery, or directly serve as the part (collector) of battery, achieve battery integrated with heating system, Fast Heating intensification can be carried out from inside battery to battery.Overcome that external heat is slow, heating is uneven, cause the complicated and awkward problem of battery system.
(3) flexible graphite paper chemistry and stable electrochemical property in organic electrolyte system and washing electrolyte system, thus other electric heating elements are different from, flexible graphite paper directly can be placed in inside battery, therefore the structure, preparation technology etc. of battery do not need to make large change, existing production line can be utilized to process, decrease investment.
(4) external heating power supply mode is flexible, can utilize battery self, also can utilize the charge power supply etc. of battery.
Feature of the present invention is not significantly changing battery material, under the condition of electrolyte and internal structure, substitute completely with flexible graphite paper or Some substitute metal as the collector of electrode, or graphite paper is directly placed between both positive and negative polarity as electric heating element, by applying external power supply to graphite paper, it is made to generate heat rapidly, thus the Fast Heating realized electrode material and electrolyte, the temperature of inside battery is raised rapidly, like this, even if under battery is in low temperature environment for a long time, utilize method of the present invention, heat through the short time, its discharge voltage and discharge capacity can close to normal temperature values, then in use by the heat that self produces, normal battery operation can be ensured, thus the problem that when effectively solving battery cold-starting, performance significantly decays.
The method of fast electrode material and electrolyte being carried out to heat temperature raising from the inner homogeneous of battery can be realized,
Accompanying drawing explanation
Fig. 1 is the schematic diagram utilizing flexible graphite paper collector to heat battery core.
Embodiment
Technical solution of the present invention is not limited to following cited embodiment, also comprises the combination in any between each embodiment.
Embodiment one: present embodiment improves the method for battery low-temperature startup performance, it is characterized in that the method is specially:
For adopting metal forming to be the lithium ion battery of collector, with flexible graphite paper alternative metals paper tinsel as collector, be connected directly between by external power supply on the lug of graphite paper collector, control heating voltage scope 1 ~ 220V, the thickness of described flexible graphite paper is 0.01 ~ 1.0mm.
In battery system, introduce the collector that ultrathin flexible graphite paper serves as electrode, by applying voltage to it, realize the even Fast Heating to electrode material and electrolyte from battery core inside, thus promote rapidly the temperature of battery, even if make battery store at low temperature environment, still can keep high charge-discharge performance, solve the problem that battery cryogenic property is not good.
Embodiment two: present embodiment and embodiment one unlike: described flexible graphite paper substitutes the collector of all or part of Al paper tinsel as lithium ion cell positive.Other is identical with embodiment one.
Embodiment three: present embodiment and embodiment one unlike: described flexible graphite paper substitutes the collector of all or part of Cu paper tinsel as lithium ion battery negative.Other is identical with embodiment one.
Embodiment four: present embodiment and embodiment one unlike: described flexible graphite paper substitutes the collector of whole Al paper tinsel as lithium ion cell positive, substitutes the collector of whole Cu paper tinsel as lithium ion battery negative simultaneously.Other is identical with embodiment one.
Embodiment five: present embodiment and embodiment one unlike: described flexible graphite paper Substitute For Partial Al paper tinsel is as the collector of lithium ion cell positive, and Substitute For Partial Cu paper tinsel is as the collector of lithium ion battery negative simultaneously.Other is identical with embodiment one.
Embodiment six: one of present embodiment and embodiment one to five are the flexible compound graphite paper that flexible compound graphite paper, Graphene and synthetic fabrics that flexible graphite paper, graphite and synthetic fabrics compound prepared by flexible graphite paper, Prof. Du Yucang graphite prepared by native graphite are formed are formed unlike: described flexible graphite paper, described synthetic fabrics is that polypropylene, polyethylene, polypropylene are fine, polyamide or polyester.Other is identical with one of embodiment one to five.
The method that graphite described in present embodiment and synthetic fabrics compound form flexible compound graphite paper is existing conventional method, and the method that Graphene and synthetic fabrics form flexible compound graphite paper is existing conventional method.
Embodiment seven: one of present embodiment and embodiment one to six unlike: the thickness of described flexible graphite paper is 0.015 ~ 0.025mm.Other is identical with one of embodiment one to six.
Embodiment eight: one of present embodiment and embodiment one to six unlike: the thickness of described flexible graphite paper is 0.025 ~ 0.07mm.Other is identical with one of embodiment one to six.
Embodiment nine: present embodiment improves the method for battery low-temperature startup performance, it is characterized in that the method is specially:
For using the battery that screen or foam metal are collector, using the flexible graphite paper with hole as electric heating element, be placed between the positive pole of battery and negative pole, brace is drawn separately from flexible graphite paper, external power supply is connected directly between on the brace of graphite paper, control heating voltage scope 1 ~ 220V, the diameter of described hole is 0.01 ~ 1mm, pore area accounting 10% ~ 60%, porous nickel is distributed in in the scope of electrode slice equidimension on flexible graphite paper, and the thickness of described flexible graphite paper is 0.01 ~ 1.0mm.
In battery system, introduce ultrathin flexible graphite paper as electric heating element, by applying voltage to it, realize the even Fast Heating to electrode material and electrolyte from battery core inside, thus promote rapidly the temperature of battery, even if make battery store at low temperature environment, still can keep high charge-discharge performance, solve the problem that battery cryogenic property is not good.
Embodiment ten: present embodiment and embodiment nine are the flexible compound graphite paper that flexible compound graphite paper, Graphene and synthetic fabrics that flexible graphite paper, graphite and synthetic fabrics compound prepared by flexible graphite paper, Prof. Du Yucang graphite prepared by native graphite are formed are formed unlike: described flexible graphite paper, described synthetic fabrics is that polypropylene, polyethylene, polypropylene are fine, polyamide or polyester.Other is identical with embodiment nine.
Embodiment 11: present embodiment and embodiment nine unlike: the flexible graphite paper with hole is placed between all positive poles of battery and negative pole.Other is identical with embodiment nine.
Embodiment 12: present embodiment and embodiment nine unlike: the flexible graphite paper with hole is placed between the part positive pole of battery and negative pole.Other is identical with embodiment nine.
Embodiment 13: one of present embodiment and embodiment nine to ten two unlike: the thickness of described flexible graphite paper is 0.015 ~ 0.025mm.Other is identical with one of embodiment nine to ten two.
Embodiment 14: one of present embodiment and embodiment nine to ten two unlike: the thickness of described flexible graphite paper is 0.025 ~ 0.07mm.Other is identical with one of embodiment nine to ten two.
For verifying beneficial effect of the present invention, carry out following experiment:
Following examples flexible graphite paper used is flexible graphite paper prepared by native graphite, and thickness is 0.03mm.
Embodiment 1:
Using 0.03mm flexible graphite paper as the collector of positive and negative electrode, by LiFePO
4positive electrode is coated in as positive pole on flexible graphite paper, by Li
4ti
5o
12negative material is coated in as negative pole on flexible graphite paper, and the LiFePO of 5Ah has as shown in Figure 1 been prepared in design
4/ Li
4ti
5o
12soft-package battery, in Fig. 1,1 is flexible graphite paper collector, and 2 is barrier film.
At-20 DEG C, apply 9V direct voltage to flexible graphite paper negative current collector two ends, battery temperature can be elevated to 0 DEG C in 4s, 10s can be raised to 10 DEG C, and 15s rises to 18 DEG C.At-30 DEG C, apply 9V direct voltage to flexible graphite paper positive pole and negative current collector two ends, battery temperature can be elevated to 0 DEG C in 5s, 120s rises to 20 DEG C simultaneously.Battery is 1C discharge voltage 1V at-20 DEG C, discharge capacity 3.1Ah; Discharge after 9V heating 15s 1C voltage 1.8V, capacity 4.92Ah.
Embodiment 2:
Using 0.025mm flexible graphite paper as the collector of positive and negative electrode, by LiFePO
4positive electrode is coated in as positive pole on flexible graphite paper, is coated in by graphite cathode material as negative pole on flexible graphite paper, the LiFePO of assembling 10Ah
4/ graphite soft-package battery.
At-45 DEG C, apply 24V direct voltage to the positive and negative collector two ends of flexible graphite paper, battery temperature can be elevated to 0 DEG C in 19s, 28s rises to 19 DEG C.Battery is 1C electric discharge no-voltage platform at-45 DEG C; Capacity 1.2Ah; 1C discharge voltage 3.1V, capacity 9.39Ah after 24V heating 28s.
Embodiment 3:
With aluminium as LiFePO
4positive electrode, Copper Foil, as the collector of graphite cathode material, assemble the LiFePO of 10Ah
4/ graphite soft-package battery.Battery is 1C electric discharge no-voltage platform at-45 DEG C, capacity 1.16Ah; 1C discharge voltage 3.08V, capacity 9.3Ah at 19 DEG C.With embodiment 2 comparative illustration, substitute aluminium foil and Copper Foil as the collector of lithium ion battery with flexible graphite paper, the chemical property of battery can not be affected.
Embodiment 4:
Between all both positive and negative polarities of 2V50Ah common lead acid accumulator, install the atresia ultrathin flexible graphite paper of 0.03mm and pole piece equidimension additional and get ultrathin flexible graphite paper (the micro-pore diameter 0.5mm of micropore, hole density 100/square centimeter), implant battery 0.1C discharge capacity 8Ah at 25 DEG C of atresia graphite paper, implant battery 0.1C discharge capacity 48Ah at 25 DEG C of graphite paper with holes, illustrate that atresia graphite paper has intercepted the transmission of electrolyte, cause battery capacity to decline, the graphite paper of perforate on the capacity of battery substantially without impact.Apply 12V direct voltage at all perforate graphite paper heating plate two ends, after 27s, battery temperature rises to 0 DEG C by-30 DEG C, rises to 25 DEG C after 39s.Battery is 0.1C discharge capacity 24Ah at-30 DEG C, after 0.5C discharge capacity 11Ah, 12V heat 40s, and 0.1C discharge capacity 48Ah, 0.5C discharge capacity 42Ah.After 24V heats 18s, 0.1C discharge capacity 47Ah, 0.5C discharge capacity 40Ah.
Claims (10)
1. improve the method for battery low-temperature startup performance, it is characterized in that the method is specially:
For adopting metal forming to be the lithium ion battery of collector, with flexible graphite paper alternative metals paper tinsel as collector, be connected directly between by external power supply on the lug of graphite paper collector, control heating voltage scope 1 ~ 220V, the thickness of described flexible graphite paper is 0.01 ~ 1.0mm.
2. the method for raising battery low-temperature startup performance according to claim 1, is characterized in that described flexible graphite paper substitutes the collector of all or part of Al paper tinsel as lithium ion cell positive.
3. the method for raising battery low-temperature startup performance according to claim 1, is characterized in that described flexible graphite paper substitutes the collector of all or part of Cu paper tinsel as lithium ion battery negative.
4. the method for raising battery low-temperature startup performance according to claim 1, is characterized in that described flexible graphite paper substitutes the collector of whole Al paper tinsel as lithium ion cell positive, substitutes the collector of whole Cu paper tinsel as lithium ion battery negative simultaneously.
5. the method for raising battery low-temperature startup performance according to claim 1, is characterized in that the collector of described flexible graphite paper Substitute For Partial Al paper tinsel as lithium ion cell positive, and Substitute For Partial Cu paper tinsel is as the collector of lithium ion battery negative simultaneously.
6. the method for the raising battery low-temperature startup performance according to claim 1,2,3,4 or 5, it is characterized in that described flexible graphite paper is the flexible compound graphite paper that flexible compound graphite paper, Graphene and synthetic fabrics that flexible graphite paper, graphite and synthetic fabrics compound prepared by flexible graphite paper, Prof. Du Yucang graphite prepared by native graphite are formed are formed, described synthetic fabrics be that polypropylene, polyethylene, polypropylene are fine, polyamide or polyester.
7. improve the method for battery low-temperature startup performance, it is characterized in that the method is specially:
For using the battery that screen or foam metal are collector, using the flexible graphite paper with hole as electric heating element, be placed between the positive pole of battery and negative pole, brace is drawn separately from flexible graphite paper, external power supply is connected directly between on the brace of graphite paper, control heating voltage scope 1 ~ 220V, the diameter of described hole is 0.01 ~ 1mm, pore area accounting 10% ~ 60%, porous nickel is distributed in in the scope of electrode slice equidimension on flexible graphite paper, and the thickness of described flexible graphite paper is 0.01 ~ 1.0mm.
8. the method for raising battery low-temperature startup performance according to claim 7, it is characterized in that described flexible graphite paper is the flexible compound graphite paper that flexible compound graphite paper, Graphene and synthetic fabrics that flexible graphite paper, graphite and synthetic fabrics compound prepared by flexible graphite paper, Prof. Du Yucang graphite prepared by native graphite are formed are formed, described synthetic fabrics be that polypropylene, polyethylene, polypropylene are fine, polyamide or polyester.
9. the method for the raising battery low-temperature startup performance according to claim 7 or 8, is characterized in that the flexible graphite paper with hole to be placed between all positive poles of battery and negative pole.
10. the method for the raising battery low-temperature startup performance according to claim 7 or 8, is characterized in that the flexible graphite paper with hole to be placed between the part positive pole of battery and negative pole.
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Cited By (17)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106410940A (en) * | 2016-11-03 | 2017-02-15 | 山东建筑大学 | Solar cell with battery low-temperature auxiliary heating function and control method of solar cell |
| CN106532190A (en) * | 2016-12-09 | 2017-03-22 | 厦门华戎能源科技有限公司 | Rapid heating battery |
| CN106532189A (en) * | 2016-12-09 | 2017-03-22 | 厦门华戎能源科技有限公司 | Nano carbon crystal heating battery |
| CN106602103A (en) * | 2016-12-23 | 2017-04-26 | 中国矿业大学(北京) | Quick self-heating starting method of solid oxide fuel cell and material |
| CN106898729A (en) * | 2017-03-27 | 2017-06-27 | 浙江大学 | Flexible current-collecting body, electrode and battery comprising the flexible current-collecting body |
| CN109216752A (en) * | 2017-06-29 | 2019-01-15 | 青岛恒金源电子科技有限公司 | A kind of low-temperature lithium ion battery group |
| CN109244599A (en) * | 2018-10-30 | 2019-01-18 | 江苏塔菲尔新能源科技股份有限公司 | A kind of composite negative pole pole piece with rapid heating function and the battery core and battery using it |
| CN109390643A (en) * | 2018-10-11 | 2019-02-26 | 南京宁智高新材料研究院有限公司 | A kind of three-diemsnional electrode heating means being cold-started at low temperature for battery |
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| CN112599785A (en) * | 2021-03-03 | 2021-04-02 | 浙江艾罗网络能源技术股份有限公司 | Self-temperature-control current collector of lithium ion battery and preparation method and application thereof |
| CN114361606A (en) * | 2020-09-28 | 2022-04-15 | 比亚迪股份有限公司 | Pole core, battery and battery module |
| RU214932U1 (en) * | 2022-09-30 | 2022-11-22 | Федеральное Автономное Учреждение "Центральный институт авиационного моторостроения имени П.И. Баранова" | Battery with external heating |
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| US12057561B1 (en) | 2019-07-12 | 2024-08-06 | Ampcera Inc. | Systems and methods for induction heating of electrolytes |
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| CN106410940A (en) * | 2016-11-03 | 2017-02-15 | 山东建筑大学 | Solar cell with battery low-temperature auxiliary heating function and control method of solar cell |
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| CN109216752A (en) * | 2017-06-29 | 2019-01-15 | 青岛恒金源电子科技有限公司 | A kind of low-temperature lithium ion battery group |
| CN109216752B (en) * | 2017-06-29 | 2020-12-29 | 青岛恒金源电子科技有限公司 | Low-temperature lithium ion battery pack |
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| DE102018123910A1 (en) * | 2018-09-27 | 2020-04-02 | Webasto SE | Battery, especially lithium-ion battery |
| CN109390643A (en) * | 2018-10-11 | 2019-02-26 | 南京宁智高新材料研究院有限公司 | A kind of three-diemsnional electrode heating means being cold-started at low temperature for battery |
| CN109244599A (en) * | 2018-10-30 | 2019-01-18 | 江苏塔菲尔新能源科技股份有限公司 | A kind of composite negative pole pole piece with rapid heating function and the battery core and battery using it |
| CN110137501A (en) * | 2019-03-29 | 2019-08-16 | 中国科学院青岛生物能源与过程研究所 | A kind of flexibility high-voltage lithium ion batteries and preparation method thereof |
| US12057561B1 (en) | 2019-07-12 | 2024-08-06 | Ampcera Inc. | Systems and methods for induction heating of electrolytes |
| CN111477995A (en) * | 2020-06-01 | 2020-07-31 | 西安电子科技大学芜湖研究院 | New energy battery heating starting mechanism in low-temperature environment |
| US11936028B1 (en) | 2020-07-13 | 2024-03-19 | Ampcera Inc. | Systems and methods for heating electrochemical systems |
| CN114361606A (en) * | 2020-09-28 | 2022-04-15 | 比亚迪股份有限公司 | Pole core, battery and battery module |
| CN114361606B (en) * | 2020-09-28 | 2023-08-08 | 比亚迪股份有限公司 | Pole core, battery and battery module |
| CN112599785A (en) * | 2021-03-03 | 2021-04-02 | 浙江艾罗网络能源技术股份有限公司 | Self-temperature-control current collector of lithium ion battery and preparation method and application thereof |
| RU214932U1 (en) * | 2022-09-30 | 2022-11-22 | Федеральное Автономное Учреждение "Центральный институт авиационного моторостроения имени П.И. Баранова" | Battery with external heating |
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