CN203288714U - Alkaline battery with balanced internal pressure and low resistance - Google Patents

Alkaline battery with balanced internal pressure and low resistance Download PDF

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Publication number
CN203288714U
CN203288714U CN2013203850263U CN201320385026U CN203288714U CN 203288714 U CN203288714 U CN 203288714U CN 2013203850263 U CN2013203850263 U CN 2013203850263U CN 201320385026 U CN201320385026 U CN 201320385026U CN 203288714 U CN203288714 U CN 203288714U
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China
Prior art keywords
pole piece
plate
electrode plate
negative pole
compound
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Expired - Fee Related
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CN2013203850263U
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Chinese (zh)
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张治平
郑小海
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FUJIAN GAOLI JINHUANG ENERGY TECHNOLOGY Co Ltd
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FUJIAN GAOLI JINHUANG ENERGY TECHNOLOGY Co Ltd
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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
    • 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
    • Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
    • Y02P70/50—Manufacturing or production processes characterised by the final manufactured product

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Abstract

The utility model relates to an alkaline battery with balanced internal pressure and low resistance. The alkaline battery comprises a cylindrical steel casing filled up with electrolyte. A composite positive electrode plate and a composite negative electrode plate are distributed in the cylindrical steel casing at interval, the composite positive electrode plate and the composite negative electrode plate are in shapes matched with the cylindrical steel casing, the area of the composite negative plate are larger than that of the composite positive electrode plate, the upper end of the composite negative electrode plate is higher than the upper end of the composite positive electrode plate, and the lower end of the composite negative electrode plate is higher than or lower than the lower end of the composite positive electrode plate. The relationship between the area of the positive electrode plate and the area of the negative electrode plate is S positive = aS negative, wherein the a is larger than 0.6 and smaller than 0.8. The composite positive electrode plate is completely wrapped by a partition film, and no partition plate is arranged on the composite negative electrode plate. Thus, the internal pressure of the battery is greatly reduced, the situation where a safety valve of a general structure is frequently opened to generate overhigh internal pressure to cause electrolyte loss is avoided, and the cycle life of the battery is prolonged.

Description

Force down the internal resistance alkaline battery in a kind of balance
Technical field
The utility model relates to alkaline battery, particularly forces down the internal resistance alkaline battery in a kind of balance, and it is suitable for the large capacity cylinder-type nickel-metal hydride battery of electric vehicle.
Background technology
Along with advocate green traffic worldwidely, people feel develop the battery of the new energy as automobile, motorcycle, launching trolley power day by day in recent years.Pollution-free, large capacity, highly reliable, but fast charging and discharging, memory-less effect, the Ni-MH battery that specific energy is high are one of main directions of development electric vehicle battery, are also the main key issues of development electric motor car.
Press high in the large capacity Ni-MH battery of traditional electric vehicle charge period, soak time is long and the production process weatherability is poor, easily oxidation under the damp atmosphere environment, reduce performance, and the size of interior pressure and whether can to reach balance be the key factor that affects the alkaline battery life-span is pressed the design of MH-Ni battery, is generally just to limit principle, both capacity of negative plates was superfluous, and the capacity of whole battery is determined by positive electrode capacity.Because the design of battery is just to limit principle, partial reaction occurs when over-charging of battery, and some reaction all likely occurs in whole charging process, and oxygen, hydrogen partial pressure form inner pressure of battery together.But oxygen can be by being diffused in the negative terminal surface reduction, and hydrogen can be inner by diffusing into the negative pole alloy.
Generally speaking, gas compound by 2 approach: one is diffused into compound on electrode (solid, liquid, gas) three phase boundary by barrier film, electrode surface liquid film layer, and it two enters air chamber and carry out compound.Last approach, because the resistance to mass tranfer of gas in liquid phase is very large,, so diffusion rate is little, makes gas recombination speed also little, presses effect limited in reducing.There is experiment to show, the speed constant of gas in gas phase is 107 times of its speed constant in liquid phase, this that is to say that gas directly is diffused into negative pole, directly carry out compound on the solid phase interface of negative pole, just can accelerate gas recombination speed, both namely improved chemical reaction velocity, made the large reduction of inner pressure of battery.In the battery structure of routine, the method for pressing in solving generally has: (1) reduces O 2Growing amount.For example limit the charge volume (CN1166007) of battery or add some additives to improve O in positive pole 2Deposition potential, gas production is reduced.(2) improve the ability of negative pole composite oxygen and suction hydrogen and the hydrogen storage property of hydrogen-storage alloy.Carry out that hydrophobic is processed or by the precious metal (WO95/27315) such as interpolation palladium, platinum or by processing, make alloy surface form the catalytic center of rich nickel dam such as anticathode.(3) enlarge air chamber, space (USP5744259) space to provide gas temporarily store of pole piece upper end to battery cap both had been provided, make inside battery keep lower interior pressure.
But these methods do not break away from anodal and negative pole has scope of the same area, often or cause cell active materials not take full advantage of, and then have influence on discharge capacity, perhaps greatly improve the battery cost or make the electrode fabrication process complicated, and adopting the said method inner pressure of battery still higher, in the charge and discharge cycles process, the safety valve overfrequency is opened, cause electrolyte solution loss, make the battery hermetization variation, cycle life descends.Therefore, necessary making improvements, make its performance that further raising be arranged.
Summary of the invention
The purpose of this utility model is to provide a kind of interior pressure that can effectively reduce battery, improves the electrode active material utilance, reduces the alkaline battery of battery short circuit incidence.
For solving the problems of the technologies described above, the utility model adopts the basic conception of technical scheme to be:
the utility model provides in a kind of balance and forces down the internal resistance alkaline battery, comprise the cylindrical steel that electrolyte is housed, be provided with in described cylindrical steel with its shape and adapt and anode composite sheet and the Compound Negative pole piece of alternate layout, cylindrical steel and just compound, be provided with lower insulation plate between the lower end of negative plate, just compound, the top of negative plate is provided with upper insulation plate and positive wire, the upper end of cylindrical steel is provided with inside groove and the cover plate that is placed in one, be provided with the cover plate for sealing circle between the groove of cover plate and cylindrical steel upper end, the middle part of cover plate is provided with safety valve replaceable and the interchangeable liquid feeding, it is characterized in that: the area of Compound Negative pole piece is greater than the area of anode composite sheet, Compound Negative pole piece upper end is higher than the upper end of anode composite sheet, Compound Negative pole piece lower end is higher or lower than the lower end of anode composite sheet, the pass of positive/negative plate area is S ﹠lt, sub TranNum="68" ﹠gt, just ﹠lt, /sub ﹠gt,=aS ﹠lt, sub TranNum="69" ﹠gt, negative ﹠lt, /sub ﹠gt, , 0.6＜a＜0.8 wherein, the anode composite sheet is isolated film fully and coats, and there is no barrier film on the Compound Negative pole piece.
Further, barrier film can bear high-multiplying power discharge and high low-temperature working.
Further, the described replaceable and safety valve interchangeable liquid feeding comprises the valve base of safety valve that spins with the cover plate middle part and with the safety valve that its top spins, regulates cap, be provided with sealing ring between valve base of safety valve and cover plate, valve base of safety valve and safety valve are regulated between cap and are provided with rubber ball.
Further, described Compound Negative pole piece is that thickness is the low interior negative plate of pressing high charge-discharge rate type of 0.4-1.5mm, and by coiling, forms the hollow cylinder negative plate.
Further, described Compound Negative pole piece is connected with the bottom of cylindrical, copper shell by the sheet that confluxes.
Further, the extexine of described anode composite sheet and Compound Negative pole piece all sprays one deck and can prevent production process pole piece powder falling and oxidized protective organic film.
Further, the thickness of described anode composite sheet is 0.4-1.5mm, and by coiling, forms the hollow cylinder positive plate.
After adopting technique scheme, the utility model compared with prior art has following beneficial effect:
The safety valve of the replaceable liquid in the utility model after the internal resistance of cell increases, can be pulled down it, and injects new electrolyte, adjusts the safety valve that more renews again after internal resistance, recovers its capacity.Due to the pole piece of battery in the utility model by the high conduction, low in pole pressure piece form, and adopted the conductivity type pole piece that conductive layer and protecting film are arranged again, thereby improved charging rate, and can the IC charge rate charge and the discharge of 3c discharge rate, interior pressure remains on the 3-5 kilograms per centimeter 2In scope, the charging rate of more former pole piece improves 50%, and interior drops is more than 50%.Below in conjunction with accompanying drawing, embodiment of the present utility model is described in further detail.
the area that structural design of the present utility model makes negative pole greater than the area of positive pole and negative pole upper end higher than anodal upper end, make gas can directly be diffused into negative pole, directly carry out compound at negative pole higher than the solid phase surface of positive pole, enough gas recombination spaces so both were provided, greatly increased again the particle number of gaseous recombination (catalysis) reaction, thereby improved the gas recombination ability, accelerated gas recombination speed, inner pressure of battery is reduced greatly, avoided causing because interior pressure is excessive in the conventional structure overfrequency of safety valve to open, cause the phenomenon of electrolyte solution loss, improved the cycle life of battery.
Description of drawings
Below in conjunction with drawings and Examples, the utility model is further illustrated
Fig. 1 is the structural representation of the large capacity column type of the utility model electric vehicle Ni-MH battery
Fig. 2 is the I section enlarged drawing of Fig. 1
Fig. 3 is the positive/negative plate unfolding state figure of the utility model alkaline battery
Fig. 4 is the positive/negative plate unfolding state figure that reveals under the utility model alkaline battery positive sheet lower end
Embodiment
as shown in Figure 1, the structure of the large capacity cylinder-type nickel-metal hydride battery of the utility model electric vehicle comprises the cylindrical steel 6 that electrolyte is housed, be provided with in described cylindrical steel 6 with its shape and adapt and anode composite sheet 9 and the Compound Negative pole piece 7 of alternate layout, cylindrical steel 6 is with just compound, negative plate 9, be provided with lower insulation plate 10 between 7 lower ends, just compound, negative plate 9, 7 top is provided with upper insulation plate 3 and positive wire 5, the cover plate 4 that the upper end of cylindrical steel 6 is provided with inside groove and is placed in one, be provided with cover plate for sealing circle 2 between the groove of the upper end of cover plate 4 and cylindrical steel 6, the middle part of cover plate 4 is provided with the safety valve 1 of replaceable and interchangeable liquid feeding.The area of Compound Negative pole piece is greater than the area of anode composite sheet, and Compound Negative pole piece upper end is higher than the upper end of anode composite sheet, and Compound Negative pole piece lower end is lower than the lower end of anode composite sheet; Wherein, anode composite sheet 9 is isolated film 8 fully and coats, there is no barrier film 8 on Compound Negative pole piece 7, barrier film 8 can bear high-multiplying power discharge and high low-temperature working, the complete clad anode sheet 9 of barrier film, made up like this difference on the positive/negative plate size, the assembling of battery is become easily to be carried out, be clipped in scheme between positive/negative plate with respect to barrier film, install and only need the positive plate that has wrapped up barrier film is combined and is got final product with negative plate, when positive and negative plate size difference is larger, arranges like this and can make more compact structure simultaneously.
The structure of the safety valve 1 of replaceable described in Fig. 1 and interchangeable liquid feeding as shown in Figure 2, comprise the valve base of safety valve 14 that spins with cover plate 4 middle parts and with the safety valve that its top spins, regulate cap 12, be provided with sealing ring 11 between valve base of safety valve 14 and cover plate 4, valve base of safety valve 14 and safety valve are regulated between cap 12 and are provided with rubber ball 13.This safety valve 1 is removable and can again seals, be used for changing and add electrolyte and adjust pressure, the large capacity Ni-MH battery of the utility model electric vehicle all works under quick charge and heavy-current discharge condition, in use safety valve is easily opened or is had gas leakage to cause electrolyte to reduce, make end-of-life, in this case, the battery core performance of battery is still good, but because electrolyte is withered, internal resistance is increased, capacity loss.The safety valve of described replaceable liquid feeding after the internal resistance of cell increases, can be pulled down it, and injects new electrolyte, and the safety valve that more renews again after the levelling internal resistance, recover its capacity.
Described Compound Negative pole piece 7 comprises substrate, and on substrate, dry method is suppressed with rapid solidification Mm Ni Co Mn Al series hydrogen storage alloy powder, and the conductive layer of low-melting-point metal conduction bond material formation.Described Compound Negative pole piece 7 is that thickness is the interior negative plate of pressing high charge-discharge rate type of low electricity of 0.4-1.5mm, and by coiling, forms the hollow cylinder negative plate.Described Compound Negative pole piece 7 is connected with the bottom of cylindrical steel 6 by the sheet that confluxes, strengthen heavy-current discharge performance, do not draw in figure, the substrate of described Compound Negative pole piece 7 is by the guipure of the good copper wire of electric conductivity or nickel plating copper wire or nickel wire or nickel alloy wire or multiple nickel-iron wire or ferroalloy braiding or above-mentioned metal punching strip, consist of.The rapid solidification Mm Ni Co Mn Al series hydrogen storage alloy powder of described formation Compound Negative pole piece 7 be shaped as sheet, tip-like, spherical, polygonal water chestnut shape, the powder grain becomes-200 order-400 orders, fine-grain is 0.05-5.0 μ m, capacitance is 315mAh/g.
Described anode composite sheet 9 comprises the substrate that consists of foam-like nickel or dilval or monel or copper or copper alloy iron or ferroalloy, the mixed-powder thing that the nickel oxyhydrogen powder that on substrate, cladding has conductivity type multiple zinc, aluminium or a cobalt and low-melting-point metal Al Zn Sn powder or ultra-fine dendroid, fibrous, spherical nickel powder conduction bond material mix, adding additives solution is suppressed formation through continuous rolling compacting or flat high pressure, and the specific energy after activation can reach＞250mAh/g.The thickness of described anode composite sheet 9 is 0.4-1.5mm, and by coiling, forms the hollow cylinder positive plate.
The outer shell of described anode composite sheet 9 and Compound Negative pole piece 7 all has one deck can prevent production process pole piece powder falling and oxidized protective organic film.
Forcing down in large capacity Ni-MH battery requires can quick charge, with high discharge-rate, in battery is conducted electricity, hanged down by height in the utility model, pole pressure piece forms the conductivity type pole piece that negative pole adopts conductive layer and protecting film again, it improves charging rate, can the IC charge rate charge and the discharge of 3C discharge rate, interior pressure remains on the 3-5 kilograms per centimeter 2In scope, the charging rate of more former pole piece improves 50%, and interior drops is more than 50%.
Fig. 3 shows the state diagram of battery when positive/negative plate launches of Fig. 1, wherein barrier film 8 also is not coated on positive plate, positive and negative plate is alternately placed mutually, positive plate 21 each limits do not exceed negative plate 22 each limits, the area of Compound Negative pole piece 22 is greater than the area of anode composite sheet 21, Compound Negative pole piece upper end is higher than the upper end of anode composite sheet, and Compound Negative pole piece lower end is lower than the lower end of anode composite sheet, and the relation of positive/negative plate area meets S Just=aS Negative, wherein 0.6＜a＜0.8, reveal on positive plate lug 23, and negative plate lug 24 is in negative plate 22 upper right corner.Fig. 4 illustrates anode composite sheet 21 bottoms and exposes, positive and negative plate is alternately placed mutually, the area of Compound Negative pole piece 22 is greater than the area of anode composite sheet 21, Compound Negative pole piece upper end is higher than the upper end of anode composite sheet, Compound Negative pole piece lower end is also higher than the lower end of anode composite sheet, and the relation of positive/negative plate area meets S Just=aS Negative, 0.6＜a＜0.8 wherein.

Claims (7)

1. force down the internal resistance alkaline battery in a balance, comprise the cylindrical steel (6) that electrolyte is housed, be provided with in described cylindrical steel (6) with its shape and adapt and anode composite sheet (9) and the Compound Negative pole piece (7) of alternate layout, cylindrical steel (6) is with just compound, negative plate (9), (7) be provided with lower insulation plate (10) between lower end, just compound, negative plate (9), (7) top is provided with upper insulation plate (3) and positive wire (5), the upper end of cylindrical steel (6) is provided with inside groove and the cover plate that is placed in one (4), be provided with cover plate for sealing circle (2) between the groove of cover plate (4) and cylindrical steel (6) upper end, the middle part of cover plate (4) is provided with the safety valve (1) of replaceable and interchangeable liquid feeding, it is characterized in that: the area of Compound Negative pole piece is greater than the area of anode composite sheet, Compound Negative pole piece upper end is higher than the upper end of anode composite sheet, Compound Negative pole piece lower end is higher or lower than the lower end of anode composite sheet, the pass of positive/negative plate area is S ﹠lt, sub TranNum="102" ﹠gt, just ﹠lt, /sub ﹠gt,=aS ﹠lt, sub TranNum="103" ﹠gt, negative ﹠lt, /sub ﹠gt, , 0.6＜a＜0.8 wherein, anode composite sheet (9) is isolated film (8) fully and coats, and there is no barrier film (8) on Compound Negative pole piece (7).
2. force down the internal resistance alkaline battery in a kind of balance according to claim 1, it is characterized in that: barrier film (8) can bear high-multiplying power discharge and high low-temperature working.
3. force down the internal resistance alkaline battery in a kind of balance according to claim 1, it is characterized in that: described replaceable and safety valve (1) the interchangeable liquid feeding comprises the valve base of safety valve (14) that spins with cover plate (4) middle part and with the safety valve that its top spins, regulates cap (12), be provided with sealing ring (11) between valve base of safety valve (14) and cover plate (4), valve base of safety valve (14) and safety valve are regulated between cap (12) and are provided with rubber ball (13).
4. force down the internal resistance alkaline battery in a kind of balance according to claim 1, it is characterized in that: described Compound Negative pole piece (7) is that thickness is the low interior negative plate of pressing high charge-discharge rate type of 0.4-1.5mm, and by coiling, forms the hollow cylinder negative plate.
5. force down the internal resistance alkaline battery in a kind of balance according to claim 1, it is characterized in that: described Compound Negative pole piece (7) is connected with the bottom of cylindrical, copper shell (6) by the sheet that confluxes.
6. force down the internal resistance alkaline battery in a kind of balance according to claim 1, it is characterized in that: the extexine of described anode composite sheet (9) and Compound Negative pole piece (7) all sprays one deck can prevent production process pole piece powder falling and oxidized protective organic film.
7. force down the internal resistance alkaline battery in a kind of balance according to claim 1, it is characterized in that: the thickness of described anode composite sheet (9) is 0.4-1.5mm, and by coiling, forms the hollow cylinder positive plate.
CN2013203850263U 2013-06-29 2013-06-29 Alkaline battery with balanced internal pressure and low resistance Expired - Fee Related CN203288714U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN2013203850263U CN203288714U (en) 2013-06-29 2013-06-29 Alkaline battery with balanced internal pressure and low resistance

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN2013203850263U CN203288714U (en) 2013-06-29 2013-06-29 Alkaline battery with balanced internal pressure and low resistance

Publications (1)

Publication Number Publication Date
CN203288714U true CN203288714U (en) 2013-11-13

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GR01 Patent grant
CF01 Termination of patent right due to non-payment of annual fee

Granted publication date: 20131113

Termination date: 20150629

EXPY Termination of patent right or utility model