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CN203377335U - Cylinder monomer 400 Ah lithium ion battery - Google Patents

Cylinder monomer 400 Ah lithium ion battery Download PDF

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Publication number
CN203377335U
CN203377335U CN201320070958.9U CN201320070958U CN203377335U CN 203377335 U CN203377335 U CN 203377335U CN 201320070958 U CN201320070958 U CN 201320070958U CN 203377335 U CN203377335 U CN 203377335U
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China
Prior art keywords
battery
ion battery
cylindrical
lithium
pole piece
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Expired - Fee Related
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CN201320070958.9U
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Chinese (zh)
Inventor
唐致远
孙蕾
王琪
凌国维
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Tianjin University
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Tianjin University
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Priority to CN201320070958.9U priority Critical patent/CN203377335U/en
Priority to PCT/CN2013/071757 priority patent/WO2014121528A1/en
Priority to US14/235,083 priority patent/US9502736B2/en
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Publication of CN203377335U publication Critical patent/CN203377335U/en
Priority to US15/278,039 priority patent/US10367190B2/en
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    • YGENERAL 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
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02EREDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E60/00Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y02E60/10Energy storage using batteries
    • YGENERAL 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
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02PCLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P70/00Climate change mitigation technologies in the production process for final industrial or consumer products
    • Y02P70/50Manufacturing or production processes characterised by the final manufactured product

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Abstract

本实用新型涉及一种锂离子电池,特别是涉及一种圆柱形单体400Ah锂离子电池。圆柱形单体400Ah锂离子电池,包括:圆柱形电池外壳1,电池芯轴3,极耳4,接线端子6,正、负极端盖11,正极极片,负极极片,作为集流体的铝箔,本实用新型制备出的圆柱形锂离子电池,单体容量达到400Ah以上,是目前国内外锂离子电池市场上已见报道研制出的圆柱形最大单体容量的电池。

Figure 201320070958

The utility model relates to a lithium ion battery, in particular to a cylindrical single 400Ah lithium ion battery. Cylindrical single 400Ah lithium-ion battery, including: cylindrical battery case 1, battery mandrel 3, tab 4, terminal 6, positive and negative end caps 11, positive pole piece, negative pole piece, aluminum foil as a current collector , The cylindrical lithium-ion battery prepared by the utility model has a monomer capacity of more than 400Ah, which is the battery with the largest cylindrical monomer capacity that has been reported to be developed in the lithium-ion battery market at home and abroad.

Figure 201320070958

Description

Cylindrical monomer 400Ah lithium ion battery
Technical field:
The utility model relates to a kind of lithium ion battery, particularly relates to a kind of cylindrical monomer 400Ah lithium ion battery.
Background technology:
Geared to the 21st century, along with scientific and technical development and the arrival of information-intensive society, universal due to various mobile communication equipments, electronic device, office automation articles for use, household electrical appliance and medicine equipment particularly, people are increasing to the demand of the energy.Simultaneously, in order to slow down the mankind itself and natural conflict, seek Sustainable Development Road, the conservation of nature environment and natural resources have become after the mankind enter 21 century the severe challenge faced.Therefore, the exploitation of new forms of energy and new material and utilization have become the primary problem that countries in the world must solve.
Electric energy is human society indispensable important energy source in daily life and work, and the utilization of any other resource generally all will be by electric energy.And the storage of electric energy, conversion, conveying all will relate to battery technology.
The current information age, people not only increase day by day to the demand of power supply, the more important thing is the requirement of power source performance more and more higher.This requirement is mainly reflected on high-specific-power, high-energy-density, long circulation life and large indexs such as capacity; Fail safe, price and the environmental friendliness degree of power supply have also been proposed to higher standard simultaneously.Traditional lead-acid battery, nickel-cadmium cell, Ni-MH battery etc., because of useful life short, the problem such as lower and environmental pollution of energy density and limited widely their use.Because lithium ion battery has good chemical property, make it become the outstanding person in current novel high-energy green battery.
Lithium ion battery is a kind of novel battery grown up on the basis of lithium battery, and it is compared maximum advantage and is that the material that can utilize lithium ion to embed, deviate from replaces lithium metal with lithium battery, thereby has solved passivation and the dendrite penetration problem of lithium anode.On the basis that has kept the advantages such as lithium battery high power capacity, high voltage, significantly improved efficiency for charge-discharge and the cycle life of battery, the security performance of battery, also obtained obvious improvement.
Summary of the invention:
The purpose of this utility model is to provide a kind of cylindrical vast capacity lithium ion battery.
Cylindrical monomer 400Ah lithium ion battery comprises:
Cylindrical cell external case 1, battery mandrel 3, lug 4, binding post 6, positive and negative electrode end cap 11, anode pole piece, cathode pole piece, as the aluminium foil of collector, described binding post 6 is fixedly connected with at axis direction with battery mandrel 3, also comprises:
Bracing frame 5, slip ring 7, lug binding nut 8, insulation cushion 9, O type circle 10, binding post locking nut 12, dog screw 13.
As preferred version, described aluminum foil thickness is 30 ± 2 μ m, and width is 320 ± 1mm, and anode pole piece, cathode pole piece length are 33.81m; Described lug specification is: long 70 ± 1mm, and wide is 10 ± 0.1mm, thick is 0.15 ± 0.015mm.
As further preferred version, respectively be provided with 3 safe valve blocks on the positive and negative electrode end cap, its diameter is 13mm, and thickness is 0.5mm, and burst pressure is 7.5-8kg; Cylindrical cell external case 1 diameter is 134mm, and length is 450mm, and wall thickness is 1mm;
Annexation is: respectively weld 100 aluminium pole ears in positive and negative electrode pole piece edge-light paper tinsel position, and with high tempreture tape by lug root firm pasting; To divide equally the space that positive and negative electrode lug 4 in groups passes between binding post 6 and slip ring 7, and fix to clamp with lug binding nut 8, battery core is packed in cylindrical cell external case 1, respectively at battery case two ends cover upper support frame 5, after the bracing frame assembling finishes, in order binding post 6, O type circle 10, insulation cushion 9, positive and negative electrode end cap 11 are linked together respectively, fixing with binding post locking nut 12 and dog screw 13.
The utility model is with respect to the advantage of prior art:
(1) column lithium ion battery that the utility model is prepared, more than the monomer capacity reaches 400Ah, is the battery of the cylindrical maximum monomer capacity developed of having appeared in the newspapers on lithium ion battery market at present both at home and abroad.
(2) result of the column lithium ion battery acupuncture that prepared by the utility model experiment shows, battery does not burn, do not explode, only 34 ℃ of battery surface temperature.The fail safe of battery significantly is improved.
(3) the utility model has designed novel cylindrical shape, practical, and anti-corrosion, withstand voltage, shock resistance, vibration resistance are strong, and cost is low, and the cell capacity is large, and inside battery is rational in infrastructure, has greatly improved the thermal diffusivity of battery, thermal stability and fail safe.
(4), in preferred version, 3 safe valve blocks have been laid respectively dexterously on the end cap at battery two ends; Adopted unique " wiring cuff structure " on the connected mode of battery and binding post, these designs have significantly reduced the internal resistance of battery, have improved the security reliability of battery.
(5) the utility model technological process is simple, is applicable to being applied to industrial-scale production.
The accompanying drawing explanation:
Accompanying drawing 1 is the cylindrical monomer 400Ah LiFePO of embodiment 1 preparation 4/ Li 4ti 5o 12the assembling generalized section of lithium ion battery.In figure, 1 represents cylindrical cell external case, and 2 represent battery roll core, 3 represent the battery mandrel, 4 represent lug, and 5 represent bracing frame, and 6 represent binding post, 7 represent slip ring, 8 represent binding nut, and 9 represent insulation cushion, and 10 represent that O type circle, 11 represents the positive and negative electrode end cap, 12 represent the binding post locking nut, and 13 represent alignment pin.
Fig. 2 is the cylindrical monomer 400Ah LiFePO of embodiment 1 preparation 4/ Li 4ti 5o 12the product schematic diagram of lithium ion battery.
Fig. 3 is the cylindrical monomer 400Ah LiFePO of embodiment 1 preparation 4/ Li 4ti 5o 12the overall dimension schematic diagram of lithium ion battery; Unit: millimeter.
Fig. 4 is the cylindrical monomer 400Ah LiFePO of embodiment 1 preparation 4/ Li 4ti 5o 12the charging and discharging curve figure of lithium ion battery.In figure, abscissa represents capacity, unit: ampere-hour, ordinate representative voltage, unit: volt.
Embodiment:
Below in conjunction with accompanying drawing and specific embodiment, the present invention is described in further details the present invention in order further more clearly to illustrate.
Embodiment 1:
Cylindrical monomer 400Ah lithium ion battery comprises:
Cylindrical cell external case 1, battery mandrel 3, lug 4, binding post 6, positive and negative electrode end cap 11, anode pole piece, cathode pole piece, as the aluminium foil of collector, described binding post 6 is fixedly connected with at axis direction with battery mandrel 3, also comprises:
Bracing frame 5, slip ring 7, lug binding nut 8, insulation cushion 9, O type circle 10, binding post locking nut 12, dog screw 13.
As preferred version, described aluminum foil thickness is 30 ± 2 μ m, and width is 320 ± 1mm, and anode pole piece, cathode pole piece length are 33.81m; Described lug specification is: long 70 ± 1mm, and wide is 10 ± 0.1mm, thick is 0.15 ± 0.015mm.
As further preferred version, respectively be provided with 3 safe valve blocks on the positive and negative electrode end cap, its diameter is 13mm, and thickness is 0.5mm, and burst pressure is 7.5-8kg; Cylindrical cell external case 1 diameter is 134mm, and length is 450mm, and wall thickness is 1mm;
Annexation is: respectively weld 100 aluminium pole ears in positive and negative electrode pole piece edge-light paper tinsel position, and with high tempreture tape by lug root firm pasting; To divide equally the space that positive and negative electrode lug 4 in groups passes between binding post 6 and slip ring 7, and fix to clamp with lug binding nut 8, battery core is packed in cylindrical cell external case 1, respectively at battery case two ends cover upper support frame 5, after the bracing frame assembling finishes, in order binding post 6, O type circle 10, insulation cushion 9, positive and negative electrode end cap 11 are linked together respectively, fixing with binding post locking nut 12 and dog screw 13.
Manufacture the method for above-mentioned cylindrical monomer 400Ah lithium ion battery, process is as follows:
(1) preparation of electrode
Prior baked raw material LiFePO4, conductive black, graphite, binding agent PVDF, solvent NMP fully is uniformly mixed according to the ratio of mass percent 42.0-43.0:1.3-1.7:0.8-1.2:2.5-3.5:51.0-53.0, makes battery anode slurry; Prior baked raw material lithium titanate, conductive black, graphite, binding agent PVDF, solvent NMP fully is uniformly mixed according to the ratio of mass percent 49.0-50.0:0.8-1.2:0.8-1.2:3.0-4.0:44.0-46.0, makes battery cathode slurry;
In coating and roll-in process, positive and negative electrode all adopts aluminium foil as collector, and aluminum foil thickness is 30 ± 2 μ m, and width is 320 ± 1mm, and the positive and negative electrode pole piece length is 33.81m;
(2) assembling of battery
100 ℃ of baking 48h of the pole piece that top step is made, again by positive and negative electrode pole piece and barrier film parallel aligned, be positioned on automatic winding-machine, respectively weld 100 aluminium pole ears in positive and negative electrode pole piece edge-light paper tinsel position, and with high tempreture tape by lug root firm pasting, positive and negative electrode aluminium pole ears specification is: long 70 ± 1mm, and wide is 10 ± 0.1mm, thick is 0.15 ± 0.015mm;
To divide equally the space that positive and negative electrode lug 4 in groups passes between binding post 6 and slip ring 7, and fix to clamp with lug binding nut 8, this connected mode is called " wiring cuff structure "; In the cylindrical cell external case 1 of carefully battery core being packed into; At battery case two ends cover upper support frame 5, after the bracing frame assembling finishes, in order binding post 6, O type circle 10, insulation cushion 9, positive and negative electrode end cap 11 are linked together respectively respectively, fixing with binding post locking nut 12 and dog screw 13; Respectively be provided with 3 safe valve blocks on the positive and negative electrode end cap, its diameter is 13mm, and thickness is 0.5mm, and burst pressure is 7.5-8kg, in coiling, assembling and welding process, carry out short-circuit testing with universal instrument, adopts vacuum liquid filling to carry out fluid injection, and electrolyte is LiPF 6(EC+PC+DMC+DEC), finally with laser welder, the end cap seal at battery two ends is burn-on.
The parameters of product is as follows:
Battery case: stainless steel; Diameter: 134mm; Length: 450mm; Weight: 12kg; Rated capacity: 400Ah; Rated operational voltage 1.8V; Internal resistance: 0.33m Ω; Service life cycle: more than 8000 times.
The cylindrical monomer 400Ah LiFePO of embodiment 1 preparation 4/ Li 4ti 5o 12as shown in Figure 2, its overall dimension schematic diagram as shown in Figure 3 for the product photo of lithium ion battery.
The BTS-5V200A battery detection equipment that adopts Shenzhen new Weir Electronics Co., Ltd. to produce, to the cylindrical monomer 400Ah LiFePO of embodiment 1 preparation 4/ Li 4ti 5o 12lithium ion battery carries out the constant current charge-discharge performance test.According to " used for electric vehicle lithium-ions battery " the automobile industry standard QC/T743-2006 of the People's Republic of China (PRC), charging process is constant voltage charge after first constant current charge, and the charging deboost is 2.3V; Discharge process is constant-current discharge, and discharge cut-off voltage is 0.5V, adopts the electric current of 0.33C to carry out charge-discharge test.
The cylindrical monomer 400Ah LiFePO of embodiment 1 preparation 4/ Li 4ti 5o 12lithium ion battery, weight is 12kg, and discharge capacity is 417.718Ah, and efficiency for charge-discharge is 99.6%, and the internal resistance of battery is 0.33m Ω, cycle life can reach (theory is calculated as 20000 times) more than 8000 times by the most conservative estimation.
From accompanying drawing 4, can find out, the charging/discharging voltage of battery is very steady, and the plateau potential retention time is grown (the platform capacity reaches 95% left and right of discharge capacity), and this is to have spinel-type Li 4ti 5o 12with rock salt Li 7ti 5o 12the feature of two phase reaction.The change of two-phase makes this electrode potential held stationary.When the two-phase transformation completes substantially, the hop of fast rise or decline just occurs in its current potential.Discharge and recharge the obvious voltage jump phenomenon produced while finishing and can be used for indicating termination to discharge and recharge, be convenient to the detection of battery capacity.
The cylindrical monomer 400Ah LiFePO of embodiment 1 preparation 4/ Li 4ti 5o 12the internal resistance of lithium ion battery is only 0.33m Ω, and conductivity is very good.High capacity cell pole piece cross-sectional area is also larger, therefore the internal resistance of cell less (resistance and cross-sectional area are inversely proportional to).The battery that adopts this technology to prepare is compared with the battery that adopts lamination techniques to prepare,, under the effect of tension force, make between positive and negative plate and barrier film and combine closely in winding process due to the pole piece of battery, volume core consolidation and cross-sectional area are large, and this makes the internal resistance of battery extremely small.
In the scope of experiment of the embodiment of the present invention 1, cylindrical LiFePO 4/ Li 4ti 5o 12the capacity of lithium ion battery has no decay, according to Li 4ti 5o 12the characteristics of material and the early stage small-capacity cells data-speculative, the cylindrical LiFePO of this 400Ah 4/ Li 4ti 5o 12the cycle life of lithium ion battery can reach (theory is calculated as 20000 times) more than 8000 times by the most conservative estimation, is 2-4 times of general lithium ion battery life-span on market, current home and abroad.
The cylindrical monomer 400Ah LiFePO of embodiment 1 preparation 4/ Li 4ti 5o 12lithium ion battery, its internal resistance, cycle life and other the key technical indexes have all completed the designing requirement of expection.
Cylindrical monomer 400Ah LiFePO to embodiment 1 preparation 4/ Li 4ti 5o 12lithium ion battery, according to " used for electric vehicle lithium-ions battery " the automobile industry standard QC/T743-2006 of the People's Republic of China (PRC), carry out the acupuncture experiment, and battery does not burn, do not explode; 6 safe valve blocks on the end cap of battery two ends all are not opened; The battery surface temperature only has 34 ℃.And conventional LiFePO in the market 4/ C battery acupuncture experiment, the battery surface temperature is 200 ℃, the fail safe of battery significantly is improved.
In sum, the prepared cylindrical monomer 400Ah LiFePO of the embodiment of the present invention 1 4/ Li 4ti 5o 12capacity of lithium ion battery is large, internal resistance is little, have extended cycle life, security reliability is good, environmental suitability is strong, consistency of performance is good, can be widely used in electric automobile, hybrid vehicle, military equipment, space flight and aviation, waterpower, firepower, wind-force, solar power station storage power-supply system, and on the uninterrupted power supply of post and telecommunications, thereby met the growing market demand, there is vast potential for future development.
The development and application green energy resource is historical inevitable choice.High power capacity, high-power, safe and reliable cylindrical lithium-ion power battery, will be at home, occupy critical role on outer market, and tool has unlimited potential and application prospect.

Claims (4)

1.圆柱形单体400Ah锂离子电池,其特征在于,包括:圆柱形电池外壳(1),电池芯轴(3),极耳(4),接线端子(6),正、负极端盖(11),正极极片,负极极片,作为集流体的铝箔,所述接线端子(6)与电池芯轴(3)在轴线方向固定连接,其特征在于,还包括:  1. Cylindrical single 400Ah lithium-ion battery, characterized in that it includes: cylindrical battery casing (1), battery mandrel (3), tab (4), terminal (6), positive and negative terminal covers ( 11), the positive pole piece, the negative pole piece, the aluminum foil used as a current collector, the terminal (6) is fixedly connected to the battery mandrel (3) in the axial direction, and it is characterized in that it also includes: 支撑架(5)、滑动环(7)、极耳夹紧螺母(8)、绝缘垫(9)、O型圈(10)、接线端子锁紧螺母(12)、定位螺钉(13)。  Support frame (5), sliding ring (7), lug clamping nut (8), insulating pad (9), O-ring (10), terminal locking nut (12), set screw (13). the 2.根据权利要求1所述圆柱形单体400Ah锂离子电池,其特征在于,所述铝箔厚度为30±2μm,宽度为320±1mm,正极极片、负极极片长度为33.81m。  2. The cylindrical single 400Ah lithium-ion battery according to claim 1, wherein the thickness of the aluminum foil is 30±2μm, the width is 320±1mm, and the length of the positive pole piece and the negative pole piece is 33.81m. the 3.根据权利要求2所述圆柱形单体400Ah锂离子电池,其特征在于,所述极耳规格为:长70±1mm,宽为10±0.1mm,厚为0.15±0.015mm。  3. The cylindrical single 400Ah lithium-ion battery according to claim 2, wherein the specifications of the tabs are: length 70±1mm, width 10±0.1mm, thickness 0.15±0.015mm. the 4.根据权利要求3所述圆柱形单体400Ah锂离子电池,其特征在于,在正、负极端盖上各设有3个安全阀片,其直径为13mm,厚度为0.5mm,爆破压力为7.5-8kg。  4. according to the described cylindrical monomer 400Ah lithium-ion battery of claim 3, it is characterized in that, respectively be provided with 3 safety valve sheets on positive and negative end caps, its diameter is 13mm, and thickness is 0.5mm, and bursting pressure is 7.5-8kg. the
CN201320070958.9U 2013-02-07 2013-02-07 Cylinder monomer 400 Ah lithium ion battery Expired - Fee Related CN203377335U (en)

Priority Applications (4)

Application Number Priority Date Filing Date Title
CN201320070958.9U CN203377335U (en) 2013-02-07 2013-02-07 Cylinder monomer 400 Ah lithium ion battery
PCT/CN2013/071757 WO2014121528A1 (en) 2013-02-07 2013-02-22 Cylindrical monomer 400 ah lithium-ion cell and preparation method therefor
US14/235,083 US9502736B2 (en) 2013-02-07 2013-02-22 Cylindrical single-piece lithium-ion battery of 400Ah and its preparation method
US15/278,039 US10367190B2 (en) 2013-02-07 2016-09-28 Cylindrical single-piece lithium-ion battery of 400Ah and its preparation method

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201320070958.9U CN203377335U (en) 2013-02-07 2013-02-07 Cylinder monomer 400 Ah lithium ion battery

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109148936A (en) * 2018-10-16 2019-01-04 苏州创能新能源实业有限公司 A kind of high torsion dynamic lithium battery
CN113067086A (en) * 2021-03-16 2021-07-02 安徽舟之航电池有限公司 Large cylindrical battery integrated module for electric automobile and manufacturing method thereof

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109148936A (en) * 2018-10-16 2019-01-04 苏州创能新能源实业有限公司 A kind of high torsion dynamic lithium battery
CN109148936B (en) * 2018-10-16 2024-03-29 苏州创能新能源实业有限公司 High-torque power lithium battery
CN113067086A (en) * 2021-03-16 2021-07-02 安徽舟之航电池有限公司 Large cylindrical battery integrated module for electric automobile and manufacturing method thereof

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