CN102891272A - Lead storage battery - Google Patents
Lead storage battery Download PDFInfo
- Publication number
- CN102891272A CN102891272A CN2012103694477A CN201210369447A CN102891272A CN 102891272 A CN102891272 A CN 102891272A CN 2012103694477 A CN2012103694477 A CN 2012103694477A CN 201210369447 A CN201210369447 A CN 201210369447A CN 102891272 A CN102891272 A CN 102891272A
- Authority
- CN
- China
- Prior art keywords
- electrolyte
- glass
- lead accumulator
- mentioned
- inner layer
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Images
Classifications
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/10—Energy storage using batteries
Abstract
The invention provides a lead storage battery, which comprises a plurality of unit cells, wherein the unit cells comprise polar plate groups, electrolyte and unit cell chambers; the polar plate groups are accommodated in the unit cell chambers in the state of impregnating in the electrolyte; the polar plate groups are formed by alternately arranging a plurality of positive plates and a plurality of negative plates through clapboards; the clapboards consist of a plurality of glass fiber layers; the distance between the adjacent positive plate and negative plate in the polar plate groups is 0.8 to 1.2mm; sulfuric acid serves as the main ingredient of the electrolyte, and the specific gravity of the electrolyte is 1.32 to 1.36g/cm<3>; the glass fiber layers are formed by respectively laminating outer glass fiber layers on two surfaces of inner glass fiber layers; the inner glass fiber layers consist of coarse glass fibers with the mean fiber diameter of 4.3 to 4.9mu m, and the mean pore size of the inner glass fiber layers is 11.0 to 14.0 mu m; and the outer glass fiber layers consist of fine glass fibers with the mean fiber diameter of 3.6 to 4.2mu m, and the mean pore size of the outer glass fiber layers is 7.0 to 10.0 mu m.
Description
Technical field
The present invention relates to lead accumulator, specifically, relate to provide and have good high rate discharging characteristic and can effectively suppress the lead accumulator that short circuit occurs.
Background technology
Lead accumulator starts the power supply of vehicle and is used for the back-up source except being used for, also be widely used in the main power source purposes, namely as the independent charging/discharging apparatus electrical source of power with power supply such as electric automobile, electric bicycle, battery-operated motor cycle, Segway Human Transporter, small-sized electric vehicle using motor, golf cart etc., solar energy is with battery etc.In these purposes, the work characteristics of lead accumulator is: electric current is large during startup, and discharging current is less during driving, and discharge time is long.Meanwhile, also require to reduce the maintaining of lead accumulator, particularly require it to have long cycle life.Aspect the long lifetime of battery, common way is: be added in the pressure on the pole plate group and push down positive active material with dividing plate by raising, thereby suppress the expansion of positive active material, prevent coming off of positive active material.But, along with the maximization of battery, change material or increase electric cell wall thick for strengthening electric groove, even like this, also be difficult to apply and keep suitable pressure in the pole plate group.Lead accumulator is along with the prolongation of its service time, because the oxidation of positive electrode collector produces corrosion, causes thus the sectional area of positive electrode collector to reduce, and the conductivity of whole positive plate descends.Voltage characteristic when consequently battery carries out high rate discharging descends.When the corrosion of such positive electrode collector further develops, the final fracture of positive electrode collector own.Cause thus battery capacity to descend rapidly.
In the process that lead accumulator uses, when repeatedly discharging and recharging, battery performance can reduce gradually.When battery performance reduced, inner pressure of battery rose sometimes, thereby applied larger pressure between positive plate and negative plate.At this moment, compression or distortion occur in electrode group easily.That is the electrode group had easily squeezed bad tendency when, inner pressure of battery rose.
On the other hand, along with miniaturization and the lightweight of electronic equipment develops rapidly, also require to have less volume and higher charge/discharge capacity as the lead accumulator of power supply, reduce spacing between the battery plus-negative plate plate and be in the constant situation of maintenance capacity, to reduce the effective way of volume, but positive/negative plate leans on and to get the danger that too closely just has internal short-circuit.Between positive plate and negative plate, accompany the dividing plate that the porous material by insulating properties consists of, the effect of this dividing plate be exactly both can make positive/negative plate as far as possible near and can avoid them to be in contact with one another short circuit.Good separator material need to have good electrolyte and absorb (absorption) performance and high mechanical strength.Consider from the viewpoint of the volume that reduces the pole plate group, preferably with more slimming of dividing plate.When positive plate and negative plate were short-circuited, internal temperature of battery can rise, and at this moment also requires the pole plate group that the function of guaranteeing fail safe is arranged.And, consider from the viewpoint of the power characteristic of keeping battery and charge/discharge capacity, also need to guarantee the performance of ion permeability and absorption and the maintenance electrolyte of dividing plate.
In addition, lead accumulator is in the process of using, and when repeatedly discharging and recharging, battery performance can reduce gradually.When battery performance reduced, inner pressure of battery rose sometimes, thereby applied larger pressure between positive plate and negative plate.At this moment, because dividing plate is Porous, compare easier generation compression or distortion with negative plate with positive plate.That is dividing plate had easily squeezed bad tendency when, inner pressure of battery rose.Along with compression or distortion occur dividing plate, the porosity of dividing plate reduces, and the amount of the electrolyte that keeps in the hole of dividing plate as a result reduces, and can hinder the movement of ion, thereby along with repeatedly carrying out of discharging and recharging, battery impedance increases gradually.
The volume, power characteristic, charge/discharge capacity and the cycle life that greatly affect lead accumulator in view of structure and the performance of dividing plate are so proposed in the prior art structure and the performance of dividing plate are carried out improved various scheme.
The flat 2011-238492 of Japanese Patent Application Laid-Open discloses a kind of hermetic type lead accumulator dividing plate, it is to cover respectively one deck fine fiber layer and three lamination structural bodies layer by layer that obtain on two surfaces of one deck crude fibre layer, above-mentioned fine fiber layer is that the glass fibre of 0.4 ~ 1.0 μ m consists of and average pore size is below the 3.5 μ m by fiber diameter, above-mentioned crude fibre layer is that the glass fibre of 1.3 ~ 4.0 μ m consists of and average pore size is that 4.0 μ m are above and be more than 1.5 times of average pore size of above-mentioned fine fiber layer by fiber diameter, wherein, in above-mentioned three layer laminates, the fiber diameter of above-mentioned glass fibre is more than the 1.2 μ m, and the ratio of the thickness of above-mentioned fine fiber layer and above-mentioned crude fibre layer is 10/90～50/50.Prevent that by adopting aforementioned barriers, can effectively improving the compressing power of pole plate group behind impregnation electrolyte from reducing effect and anti-electrolyte stratification effect, thus the life-span of having improved the hermetic type lead accumulator; And, the electrolyte mobility of the thickness direction by promoting dividing plate, the electrolyte supply liquid when having improved high rate discharging, thereby so that the charge-discharge characteristic of enclosed plumbum storage battery further improve.
It is 1.30g/cm that the related hermetic type lead accumulator of the embodiment of the flat 2011-238492 of Japanese Patent Application Laid-Open has adopted proportion
3Sulfuric acid solution.
Chinese patent application CN1224535A discloses a kind of glass fibre separator for battery, this dividing plate comprises intermeshing glass fibre aggregation and is dispersed in the cellulose fibril of 0.2 ~ 20 % by weight in the glass fibre, basically all glass fiber diameter all are not more than about 20 μ m, the glass fiber diameter of at least 5 % by weight is less than 1 μ m, for example starch or the China fir slurry by redwood from the very low wood pulp of Canadian beating degree for this cellulose fibril, improved the hot strength of aforementioned barriers by the fibriilar use of this fibre element.Adopting proportion among the embodiment of Chinese patent application CN1224535A is 1.286g/cm
3Sulfuric acid come the performance of aforementioned barriers is tested.
Chinese patent application CN1276920A discloses a kind of for the absorbing separator by analysing valve control type lead-acid accumulator battery, and it comprises the ground floor that is made of glass fibre, the second layer that glass fibre consists of and is placed on synthetic resin band between this ground floor and the second layer.This dividing plate is used in combination to improve the engineering propertiess such as tensile strength by glass layer and synthetic resin band.
On the other hand, all the time, also carrying out various researchs for lead accumulator with aspects such as the composition of electrolyte and physical property.Well known in the art is that the electrolyte that usually adopts in the lead accumulator is that proportion is 1.20～1.28g/cm
3About aqueous sulfuric acid, even add other additive in this aqueous sulfuric acid, the proportion of the electrolyte of gained is also at 1.32g/cm
3Below.
Chinese patent application CN1113352A discloses a kind of electrolyte for lead accumulator, and this electrolyte is comprised of dilute sulfuric acid, active carbon, cadmium sulfate and cobaltous sulfate, and its each weight percentages of components is: proportion is 1.28g/cm
3Dilute sulfuric acid 98～99.8%, active carbon 0.05～0.8%, cadmium sulfate 0.03～1.0%, cobaltous sulfate 0.02～0.6%.Calculate as can be known through simple, the proportion of this electrolyte is lower than 1.32g/cm
3
Chinese utility model patent application CN2076712U discloses a kind of lead accumulator, and the electrolyte that wherein adopts is the acids thing, and its proportion is 1.27 ~ 1.32g/cm
3, this lead accumulator is characterised in that and adopts Pb-Ca-Al alloy electrode to replace existing electrode by antimonial lead or pure plumbous making, so that the gas leakage amount is few in charge and discharge process, electrolyte solution loss is little.
As mentioned above, in the prior art, studying by the aspects such as the composition of dividing plate the Nomenclature Composition and Structure of Complexes or electrolyte and physical property being adjusted to improve some performance of lead accumulator always.But, in the prior art, also do not exist by simultaneously the composition of dividing plate the Nomenclature Composition and Structure of Complexes and electrolyte and physical property etc. specifically being set to provide to have good high rate discharging characteristic and can effectively suppress the lead accumulator that short circuit occurs.
Therefore, the present invention finishes in order to obtain such lead accumulator just.
Summary of the invention
Technical problem to be solved by this invention
The object of the present invention is to provide and have good high rate discharging characteristic and can effectively suppress the lead accumulator that short circuit occurs.
The means that address this problem
The present invention is by adopting specific multilayer insulating panel and proportion at the electrolyte of particular range, thereby solved above-mentioned technical problem.
That is, the present invention relates to following content.
(1) a kind of lead accumulator, it has a plurality of cells, described cell has pole plate group, electrolyte and cell chamber, described pole plate group is accommodated in the described cell chamber with the state that impregnated in electrolyte, described pole plate group is to be formed across the dividing plate alternative arrangement by multi-disc positive plate and multi-disc negative plate, wherein, described dividing plate is made of a plurality of glass layers, positive plate and the spacing between the negative plate adjacent in described pole plate group are 0.8～1.2mm, and described electrolyte is take sulfuric acid as main component and proportion is 1.32～1.36g/cm
3Wherein said a plurality of glass layer by on fibrolaminar two surfaces of inner layer glass respectively stacked glass outer fibrage form, wherein said inner layer glass fibrage is to be that the raw glass fiber of 4.3～4.9 μ m consists of and average pore size is 11.0～14.0 μ m by fiber diameter, and described glass outer fibrage is to be that the thin glass fiber of 3.6～4.2 μ m consists of and average pore size is 7.0～10.0 μ m by fiber diameter.
(2), according to above-mentioned (1) described lead accumulator, wherein, described dividing plate is compressed with 0.33～0.56 compression ratio when assembling forms battery.
(3), according to above-mentioned (1) or (2) described lead accumulator, wherein, described a plurality of glass layer is three layers, and it comprises an inner layer glass fibrage and is layered in respectively fibrolaminar two lip-deep two glass outer fibrages of described inner layer glass.
(4), according to above-mentioned (1) or (2) described lead accumulator, wherein, described spacing is 0.9～1.1mm.
(5), according to above-mentioned (1) or (2) described lead accumulator, wherein, the proportion of described electrolyte is 1.33～1.35g/cm
3
(6), according to above-mentioned (1) described lead accumulator, wherein, described electrolyte is the aqueous sulfuric acid that comprises sulfuric acid and water.
(7), according to above-mentioned (1) or (6) described lead accumulator, wherein, also comprise a small amount of additive that can be dissolved in fully in this electrolyte in the described electrolyte.
(8), according to above-mentioned (1) or (2) described lead accumulator, wherein, the fibrolaminar described fiber diameter of described inner layer glass is 4.5～4.8 μ m.
(9), according to above-mentioned (1) or (2) described lead accumulator, wherein, the fibrolaminar described fiber diameter of described glass outer is 3.8～4.0 μ m.
(10), according to above-mentioned (1) or (2) described lead accumulator, wherein, the fibrolaminar described average pore size of described inner layer glass is 12.0～13.0 μ m.
(11), according to above-mentioned (1) or (2) described lead accumulator, wherein, the fibrolaminar described average pore size of described glass outer is 8.0～9.0 μ m.
The invention effect
According to the present invention, by adopting specific multilayer insulating panel and proportion at the electrolyte of particular range, can provide thus to have good high rate discharging characteristic and can effectively suppress the lead accumulator that short circuit occurs.
Description of drawings
Fig. 1 is the schematic diagram of the pole plate group with multilayer insulating panel in the lead accumulator of the present invention.
Fig. 2 is the schematic diagram of the structure of employed three layers of dividing plate in the lead accumulator of the present invention.
Fig. 3 is the schematic diagram of the structure of employed five layers of dividing plate in the lead accumulator of the present invention.
Fig. 4 be in the lead accumulator employed dividing plate and electrolyte density on the schematic diagram of the impact of high rate discharging capacity.
Fig. 5 is the schematic diagram of the configuration mode of three layers of dividing plate in the pole plate group described in Fig. 2.
Embodiment
Below, the present invention will be described with reference to accompanying drawing.In the accompanying drawings, for the purpose of simplifying the description, the constitutive requirements with identical in fact function are represented with same reference symbol.In addition, the present invention is not limited to following execution mode.
The present invention relates to a kind of lead accumulator, it has a plurality of cells, above-mentioned cell has pole plate group, electrolyte and cell chamber, above-mentioned pole plate group is accommodated in the above-mentioned cell chamber with the state that impregnated in electrolyte, above-mentioned pole plate group is to be formed across dividing plate is alternately laminated by multi-disc positive plate and multi-disc negative plate, wherein, aforementioned barriers is laminated by a plurality of glass layers, and adopts the electrolyte of specific gravity scope.
The present invention finds in raising in the proportion of the electrolyte of lead accumulator, compressive state row when being configured between positive plate and the negative plate to the Nomenclature Composition and Structure of Complexes of multilayer insulating panel and this multilayer insulating panel is regulated, can be so that lead accumulator has good high rate discharging characteristic and can effectively suppress short circuit occurs.
In lead accumulator, the electrolyte that usually adopts is that proportion is 1.20～1.28g/cm
3About aqueous sulfuric acid, even add in this aqueous sulfuric acid and dissolve other additive, the proportion of the electrolyte of gained is also at 1.32g/cm
3Below.In the lead accumulator field, it has been generally acknowledged that, in the time will improving as the proportion of the aqueous sulfuric acid of electrolyte, can be so that the chemical reaction between sulfuric acid and the lead be more active, thus so that lead is difficult for separating out, the capacity of battery is improved.But, on the other hand, in the time will improving as the proportion of the aqueous sulfuric acid of electrolyte, and the viscosity of sulfuric acid is excessive, affected the circulation of electrolyte in dividing plate, be adsorbed on that sulfuric acid in the dividing plate also flows downward easily or downward precipitation, layering occurs in sulfuric acid easily thus, thereby affects the cycle life of battery.
For the sulfuric acid generation layering that prevents that proportion is larger in dividing plate, trial is regulated the Nomenclature Composition and Structure of Complexes of dividing plate, found that, when dividing plate adopts the less fibrage in the aperture that is made of the less fine fibre of fibre diameter, can suppress preferably the layering of sulfuric acid, but also can cause to a certain extent sulfuric acid to be difficult for flowing simultaneously, thereby affect the capacity of battery.So, trial will be used as dividing plate by the less fibrage in the aperture that the less fine fibre of fibre diameter consists of and the stepped construction that is laminated by the larger fibrage in aperture that the larger crude fibre of fibre diameter consists of, found that, can take into account capacity and the cycle life of battery with such dividing plate.
Lead accumulator also requires to have good high rate discharging characteristic, and this requires positive plate and the spacing between the negative plate adjacent in above-mentioned pole plate group less, if but too small, the precipitates such as dendrite arrive the rough sledding that short circuit electrode occurred easily, and can produce compression to the dividing plate that is configured between above-mentioned positive plate and the negative plate, also can produce some impacts to the distribution of electrolyte in dividing plate, particularly, when the spacing between above-mentioned positive plate and negative plate is too small, carrier ring can be by excess compression, electrolyte can only keep small amount, thus the high rate discharging volume lowering.When the spacing between above-mentioned positive plate and negative plate was larger, the dividing plate that is configured between above-mentioned positive plate and the negative plate can cave in, so that the haptoreaction area reduces the high rate discharging volume lowering.
In the present invention, the main component of electrolyte is that sulfuric acid and proportion are 1.32～1.36g/cm
3This electrolyte is preferably the aqueous sulfuric acid that comprises sulfuric acid and water, can also comprise in above-mentioned electrolyte and a small amount of can be dissolved in additive such as silicon dioxide in this electrolyte, sodium tetraborate, sodium sulphate etc. fully, the content of above-mentioned additive for example is 0.2～1.0 % by weight in above-mentioned electrolyte.Consider from the capacity aspect that improves battery, the proportion of electrolyte is set as 1.32g/cm
3More than.The cycle life aspect that affects battery from preventing sulfuric acid generation layering considers, the proportion of electrolyte is set as 1.36g/cm
3Below.The proportion of above-mentioned electrolyte is preferably 1.33～1.35g/cm
3
In the present invention, aforementioned barriers is made of a plurality of glass layers, wherein above-mentioned a plurality of glass layer by on fibrolaminar two surfaces of inner layer glass respectively stacked glass outer fibrage form, above-mentioned inner layer glass fibrage be by consist of as main body take the larger raw glass fiber of fiber diameter and average pore size for larger, above-mentioned glass outer fibrage be by consist of as main body as less thin glass fiber take fiber diameter and average pore size less.
Above-mentioned inner layer glass fibrage can contain the above-mentioned raw glass fiber of 70～100 % by weight and the organic fiber with acid resistance and hot-melt-bondable of 0～30 % by weight.Above-mentioned glass outer fibrage can contain the above-mentioned thin glass fiber of 70～100 % by weight and the organic fiber with acid resistance and hot-melt-bondable of 0～30 % by weight.As above-mentioned organic fiber with acid resistance and hot-melt-bondable, can list: polyolefine fiber, polyester fiber, polyacrylonitrile fibre, poly-aramid fibre etc.
Above-mentioned inner layer glass fibrage preferably is made of above-mentioned raw glass fiber, and namely the content of above-mentioned raw glass fiber in above-mentioned inner layer glass fibrage is 100 % by weight.
Above-mentioned glass outer fibrage preferably is made of above-mentioned thin glass fiber, and namely the content of above-mentioned thin glass fiber in above-mentioned glass outer fibrage is 100 % by weight.
Above-mentioned inner layer glass fibrage is that the raw glass fiber of 4.3～4.9 μ m consists of by fiber diameter preferably and average pore size is 11.0～14.0 μ m.Above-mentioned glass outer fibrage is that the thin glass fiber of 3.6～4.2 μ m becomes by fiber diameter preferably and average pore size is 7.2～10.0 μ m.
Consider that from the aspect of the capacity of taking into account battery and cycle life the fibrolaminar above-mentioned fiber diameter of above-mentioned inner layer glass is preferably 4.5～4.8 μ m, the fibrolaminar above-mentioned fiber diameter of above-mentioned glass outer is preferably 3.8～4.0 μ m.
Consider that from the aspect of the capacity of taking into account battery and cycle life the fibrolaminar above-mentioned average pore size of above-mentioned inner layer glass is preferably 12.0～13.0 μ m, the fibrolaminar above-mentioned average pore size of above-mentioned glass outer is preferably 8.0～9.0 μ m.
The fibrolaminar thickness of above-mentioned inner layer glass is preferably 0.9～1.4mm.
Above-mentioned glass outer fibrage can be one, also can be for a plurality of.The fibrolaminar thickness of each glass outer is preferably 0.2～0.45mm.
Above-mentioned inner layer glass fibrage preferably forms by the wet type pulping method, and above-mentioned glass outer fibrage preferably also forms by the wet type pulping method with above-mentioned inner layer glass fibrage equally.
The above-mentioned a plurality of glass layers that are used for the formation aforementioned barriers are preferably three layers, and it comprises an inner layer glass fibrage and is layered in respectively fibrolaminar two lip-deep two glass outer fibrages of above-mentioned inner layer glass.Fig. 2 is the schematic diagram of the structure of employed three layers of dividing plate in the lead accumulator of the present invention.As shown in Figure 2, aforementioned barriers comprises an inner layer glass fibrage 5a and is layered in respectively two lip-deep two glass outer fibrage 5b of above-mentioned inner layer glass fibrage 5a.Above-mentioned inner layer glass fibrage forms by the wet type pulping method, above-mentioned glass outer fibrage also forms by the wet type pulping method equally with above-mentioned inner layer glass fibrage, an above-mentioned inner layer glass fibrage and two above-mentioned glass outer fibrages is stacked and form three layers of dividing plate before use, stacked two above-mentioned glass outer fibrages and become three layers of dividing plate on fibrolaminar two surfaces of above-mentioned inner layer glass namely.
The above-mentioned a plurality of glass layers that be used for to consist of aforementioned barriers can also be five layers, and it comprises an inner layer glass fibrage, is layered in fibrolaminar two lip-deep two the first glass outer fibrages of above-mentioned inner layer glass and be layered in respectively two fibrolaminar lip-deep two the second glass outer fibrages of above-mentioned the first glass outer respectively.At this moment, above-mentioned inner layer glass fibrage adopts the larger crude fibre of fibre diameter, above-mentioned the second glass outer fibrage adopts the less fine fibre of fibre diameter, and above-mentioned the first glass outer fibrage adopts the fiber of fibre diameter between above-mentioned crude fibre and above-mentioned fine fibre.Fig. 3 is the schematic diagram of the stepped construction of employed five layers of dividing plate in the lead accumulator of the present invention.As shown in Figure 3, aforementioned barriers comprises an inner layer glass fibrage 5a, is layered in two lip-deep two the first glass outer fibrage 5b of above-mentioned inner layer glass fibrage 5a and be layered in respectively lip-deep two the second glass outer fibrage 5c of two above-mentioned the first glass outer fibrage 5b respectively.
In the present invention, positive plate and the spacing between the negative plate adjacent in above-mentioned pole plate group are 0.8～1.2mm, consider that from the high rate discharging characteristic aspect of battery above-mentioned spacing is preferably 0.9～1.1mm.
In the present invention, aforementioned barriers is configured between the adjacent positive plate and negative plate in above-mentioned pole plate group, and this dividing plate is compressed with 0.33～0.56 compression ratio when assembling forms battery.This compression ratio is that the difference by the spacing between the gross thickness of aforementioned barriers and above-mentioned positive plate and the negative plate calculates divided by the gross thickness of aforementioned barriers.
Fig. 1 is the schematic diagram of the pole plate group with multilayer insulating panel in the lead accumulator of the present invention.Above-mentioned pole plate group is to be formed across the aforementioned barriers alternative arrangement by multi-disc positive plate and multi-disc negative plate.
Fig. 5 is the schematic diagram of the configuration mode of three layers of dividing plate in the pole plate group described in Fig. 2.
The collector body of above-mentioned positive plate preferably draws in the net grid (the following exp that sometimes is called), at this moment the grid that draws in the net as the collector body of positive plate does not have the horizontal edge bone, can not make anodal conductivity excessive, therefore anodal current collection relatively descends, thereby the overdischarge of positive electrode active material when having avoided high rate discharging, thereby can access the effect of battery long lifetime.The collector body of negative plate can be draw in the net grid or the casting grid (the following cast that sometimes is called).
In lead accumulator, battery capacity is exactly the capacitance of the utmost point of making a comment or criticism, the exoelectrical reaction of battery be practise physiognomy across dividing plate to positive pole and negative pole between carry out, therefore it is desirable to anodal two sides all with negative pole practise physiognomy to, therefore consider from the viewpoint that improves efficiency for charge-discharge and cost control, preferably the outermost of above-mentioned pole plate group is negative plate, and namely negative plate is Duoed 1 than positive plate.
Lead accumulator of the present invention is preferably valve-regulated lead-acid battery.
Fig. 4 be in the lead accumulator of the present invention employed compound glass fibrage dividing plate (multilayer insulating panel) and electrolyte density on the schematic diagram of the impact of high rate discharging capacity.As shown in Figure 4, by adopting above-mentioned compound glass fibrage dividing plate and 1.32～1.36g/cm
3The electrolyte of high specific weight scope, can realize obviously higher high rate discharging capacity than the electrolyte that adopts existing single layer separator and same specific gravity range.In Fig. 4, the curve of multilayer insulating panel representative is respectively to be drawn by comparative example 1 described later, embodiment 1～5 and comparative example 2 resulting results to form, and the curve of single layer separator representative is respectively to be drawn by the resulting result of comparative example 7-13 described later to form.
And, according to content shown in Figure 4 also as can be known, when the proportion of electrolyte is lower than 1.32g/cm
3Or be higher than 1.36g/cm
3Situation under, the high rate discharging capacity can obviously reduce.
Below, based on embodiment the present invention is specifically described, but these embodiment being illustration of the present invention, the present invention is not limited to these embodiment.
(embodiment 1)
(1) making of pole plate group
Three layers of dividing plate that three fibrages that employing is made of 100 % by weight glass fibres respectively are laminated, namely stacked two glass outer fibrages and three layers of dividing plate forming on fibrolaminar two surfaces of inner layer glass, wherein the average fibre diameter of the glass fibre that adopts of inner layer glass fibrage is 4.6 μ m, the fibrolaminar average pore size of inner layer glass is 12.6 μ m, the average fibre diameter of the glass fibre that the glass outer fibrage adopts is 3.9 μ m, the fibrolaminar average pore size of glass outer is 8.39 μ m, wherein, the fibrolaminar thickness of inner layer glass is 1.4mm, the fibrolaminar thickness in monolayer of glass outer is 0.4mm, the gross thickness of dividing plate is inner layer glass fibrage and two glass outer fibrage sums, is 1.8mm.
According to above-mentioned identical mode, multi-disc positive plate and multi-disc negative plate is alternately overlapping across aforementioned barriers respectively, thus obtaining the pole plate group, the sheet number of above-mentioned multi-disc positive plate is 4～9, the sheet number of above-mentioned multi-disc negative plate is 5～10.
(2) manufacturing of lead accumulator
Respectively the positive pole ear of same polarity in the single pole plate group of above-mentioned acquisition is received together and obtained positive bus, the negative lug of same polarity is welded together and obtain negative bus-bar.Each pole plate group is accommodated in respectively in a plurality of cells chamber that is separated by spaced walls in the battery container.By the positive bus welding with the negative bus-bar of a pole plate group and adjacent pole plate group, thereby two adjacent pole plate groups are connected in series, successively each pole plate group are connected in series thus, namely each cell is together in series.In above-mentioned pole plate group, adjacent positive plate and the spacing between the negative plate are 1.0mm, and the compression ratio of dividing plate is 0.44.
In above-mentioned a plurality of pole plate groups that are connected in series, the positive bus of a pole plate group that is arranged in two pole plate groups at final two ends is connected with positive terminal, and the negative bus-bar of another pole plate group is connected with negative terminal.Then, battery cover is installed on the opening of battery container.Subsequently, to pour concentration into to each cell be 1.32g/cm set liquid inlet from battery cover
3Aqueous sulfuric acid as electrolyte, and in battery container, change into.After changing into, will have the valve that gas and the pressure of inside battery generation are discharged is fixed in the liquid inlet, thereby obtain lead accumulator.
(3) performance of lead accumulator is estimated
High rate discharging capacity and short circuit incidence to the lead accumulator of above-mentioned gained are measured, the results are shown in the table 1 described later of gained.
The assay method of discharge capacity is as follows:
Battery specification: 12V, 20Ah
Charge condition: with the constant voltage charging of 14.7V, charged at most 12 hours
Discharging condition: with 60A(3C) constant current discharge is until voltage is down to 9.6V
Specifically, the new product battery of making within 30 days is carried out voltage, after the mensuration of internal resistance and weight, be by with 60A(3C under 25 ℃ of conditions in ambient temperature) constant current discharge, after discharging into 9.6V and stopping, record discharge time, (unit was hour, brief note is h), calculate thus discharge capacity.
Short circuit incidence assay method is as follows:
After battery is made in assembling, change into rear charging, then with 0.1C discharge 9 hours, the battery of voltage below 10.0V of gained at this moment be judged to be short circuit has occured.With cell number that short circuit has occured in the battery sum of being produced shared percentage as the short circuit incidence.That is the battery sum of the cell number of, short circuit incidence (%)=occured short circuit/produce.
(embodiment 2～5)
In embodiment 2～5, except the proportion that makes electrolyte is respectively 1.33～1.36g/cm
3Outside, other all makes pole plate group and lead accumulator according to the condition that arranges identical with embodiment 1.Then high rate discharging capacity and the short circuit incidence of the lead accumulator of above-mentioned gained are measured the results are shown in the table 1 described later of concrete condition that arranges and gained.
(comparative example 1,2)
In comparative example 1,2, except the proportion that makes electrolyte is respectively 1.30 and 1.38g/cm
3Outside, other all makes pole plate group and lead accumulator according to the condition that arranges identical with embodiment 1.Then high rate discharging capacity and the short circuit incidence of the lead accumulator of above-mentioned gained are measured the results are shown in the table 1 described later of concrete condition that arranges and gained.
From the result of embodiment 1～5 gained as can be known, the proportion when electrolyte is respectively 1.32～1.36g/cm
3Scope in, can realize that good high rate discharging capacity and short circuit incidence are low.
But, from the result of comparative example 1 and 2 gained as can be known, when the proportion of electrolyte is lower than 1.32g/cm
3Or above 1.36g/cm
3The time, the high rate discharging capacity can decrease, and perhaps is short-circuited easily.It is believed that its reason is, in comparative example 1, is less 1.30g/cm as the proportion of the aqueous sulfuric acid of electrolyte
3, so that the chemical reaction between sulfuric acid and the lead is not too active, facial pallor is easily separated out, and causes being short-circuited easily, and causes the high rate discharging capacity lower.In comparative example 2, be larger 1.38g/cm as the proportion of the aqueous sulfuric acid of electrolyte
3, so that the viscosity of sulfuric acid is excessive, affected the circulation of electrolyte in dividing plate, thereby caused the high rate discharging capacity lower.
In sum, in the situation that adopts identical multilayer insulating panel, when the proportion of electrolyte is improved to a certain extent, can be so that the high rate discharging capacity of battery be improved, and be not easy to be short-circuited.But when the proportion with electrolyte further improved, the high rate discharging capacity of battery can decrease on the contrary.Therefore, consider that from the high rate discharging capacity and the inhibition short circuit generation aspect that improve battery preferably the proportion with electrolyte is set as 1.32～1.36g/cm
3, 1.33～1.35g/cm more preferably
3
(embodiment 6～9)
In embodiment 6～9, so that the compression ratio that adjacent positive plate and the spacing between the negative plate are respectively 0.8～1.2mm, dividing plate in the pole plate group is 0.56～0.33, adopt identical multilayer insulating panel, and to keep the proportion of electrolyte be 1.34g/cm
3Constant, in addition, other all makes pole plate group and lead accumulator according to the condition that arranges identical with embodiment 3.Then high rate discharging capacity and the short circuit incidence of the lead accumulator of above-mentioned gained are measured the results are shown in the table 1 described later of concrete condition that arranges and gained.
(comparative example 3,4)
In comparative example 3,4, except so that the compression ratio that adjacent positive plate and the spacing between the negative plate are respectively 0.7mm, 1.3mm, dividing plate in the pole plate group is respectively 0.61 and 0.28, other all makes pole plate group and lead accumulator according to the condition that arranges identical with embodiment 6.Then high rate discharging capacity and the short circuit incidence of the lead accumulator of above-mentioned gained are measured the results are shown in the table 1 described later of concrete condition that arranges and gained.
From the result of embodiment 6～9 gained as can be known, in the situation that adopts identical multilayer insulating panel and electrolyte density, be in 0.56～0.33 the scope, can realize that good high rate discharging capacity and the rate that is short-circuited are very low when compression ratio that positive plate adjacent in the pole plate group and the spacing between the negative plate are respectively 0.8～1.2mm, dividing plate.
But, from the result of comparative example 3 and 4 gained as can be known, the compression ratio that is lower than 0.8mm or surpasses 1.2mm, dividing plate when positive plate adjacent in the pole plate group and the spacing between the negative plate is lower than 0.33 or when surpassing 0.56, the high rate discharging capacity can decrease, and might be short-circuited easily.It is believed that its reason is, in comparative example 4, positive plate and the spacing between the negative plate adjacent in the pole plate group are larger 1.3mm, the compression ratio of dividing plate is less by 0.28, so that the dividing plate that is configured between above-mentioned positive plate and the negative plate can cave in, so that the haptoreaction area reduces the high rate discharging volume lowering.In comparative example 3, adjacent positive plate and the less 0.7mm of the spacing between the negative plate in the pole plate group, the compression ratio of dividing plate is larger 0.61, so that the precipitates such as dendrite arrive the rough sledding that short circuit electrode occurred easily, and the inner layer glass fibrage of dividing plate can be by excess compression, electrolyte can only keep small amount, thereby causes the high rate discharging volume lowering.
In sum, in the situation that adopts identical multilayer insulating panel and electrolyte density, consider from the high rate discharging capacity that improves battery and the aspect that is not easy to be short-circuited, be set as in the scope that preferably will be in the pole plate group adjacent positive plate and the spacing setting between the negative plate are 0.8～1.2mm, with the compression ratio of dividing plate in 0.56～0.33 the scope.
(embodiment 10～14)
In embodiment 10～14, inner layer glass fibrage and the fibrolaminar thickness of glass outer in the dividing plate are changed, other all makes pole plate group and lead accumulator according to the condition that arranges identical with embodiment 6～9.Then high rate discharging capacity and the short circuit incidence of the lead accumulator of above-mentioned gained are measured the results are shown in the table 1 described later of concrete condition that arranges and gained.
(comparative example 5,6)
In comparative example 5,6, except so that the compression ratio that adjacent positive plate and the spacing between the negative plate are respectively 0.7mm, 1.3mm, dividing plate in the pole plate group is respectively 0.61 and 0.28, other all makes pole plate group and lead accumulator according to the condition that arranges identical with embodiment 10.Then high rate discharging capacity and the short circuit incidence of the lead accumulator of above-mentioned gained are measured the results are shown in the table 1 described later of concrete condition that arranges and gained.
From the result of embodiment 10～14 and comparative example 5,6 gained as can be known, even in the situation that the inner layer glass fibrage in dividing plate and the fibrolaminar thickness of glass outer change within the specific limits, be in 0.56～0.33 the scope, can realize that still good high rate discharging capacity and the rate that is short-circuited are very low when compression ratio that positive plate adjacent in the pole plate group and the spacing between the negative plate are respectively 0.8～1.2mm, dividing plate.
(comparative example 7～13)
In comparative example 7～13, do not use multilayer insulating panel, but use the single layer separator that is consisted of by glass fibre, fiber diameter and the average pore size of this single layer separator are as shown in table 1, in addition, other makes pole plate group and lead accumulator according to the condition that arranges identical with comparative example 1, embodiment 1～5, comparative example 2 respectively.Then high rate discharging capacity and the short circuit incidence of the lead accumulator of above-mentioned gained are measured the results are shown in the table 1 described later of concrete condition that arranges and gained.
Comparative example 7～13 is compared as can be known with the result of corresponding comparative example 1, embodiment 1～5, comparative example 2 gained respectively, and the high rate discharging capacity obviously reduces.It is believed that its reason is, single layer separator is compared with multilayer insulating panel, in single layer separator electrolyte flow, distribute and circulation all bad, so cause the high rate discharging capacity all obviously to reduce.
Table 1
Industrial applicibility
The invention provides the lead accumulator of with low cost and function admirable, this battery can be applicable to the electrical source of power of electric automobile, electric bicycle, battery-operated motor cycle, Segway Human Transporter, Moped Scooter etc.
Claims (11)
1. lead accumulator, it has a plurality of cells, described cell has pole plate group, electrolyte and cell chamber, described pole plate group is accommodated in the described cell chamber with the state that impregnated in electrolyte, described pole plate group is to be formed across the dividing plate alternative arrangement by multi-disc positive plate and multi-disc negative plate, wherein, described dividing plate is made of a plurality of glass layers, positive plate and the spacing between the negative plate adjacent in described pole plate group are 0.8～1.2mm, and described electrolyte is take sulfuric acid as main component and proportion is 1.32～1.36g/cm
3Wherein said a plurality of glass layer by on fibrolaminar two surfaces of inner layer glass respectively stacked glass outer fibrage form, wherein said inner layer glass fibrage is to be that the raw glass fiber of 4.3～4.9 μ m consists of and average pore size is 11.0～14.0 μ m by fiber diameter, and described glass outer fibrage is to be that the thin glass fiber of 3.6～4.2 μ m consists of and average pore size is 7.0～10.0 μ m by fiber diameter.
2. lead accumulator according to claim 1, wherein, described dividing plate is compressed with 0.33～0.56 compression ratio when assembling forms battery.
3. lead accumulator according to claim 1 and 2, wherein, described a plurality of glass layers are three layers, it comprises an inner layer glass fibrage and is layered in respectively fibrolaminar two lip-deep two glass outer fibrages of described inner layer glass.
4. lead accumulator according to claim 1 and 2, wherein, described spacing is 0.9～1.1mm.
5. lead accumulator according to claim 1 and 2, wherein, the proportion of described electrolyte is 1.33～1.35g/cm
3
6. lead accumulator according to claim 1, wherein, described electrolyte is the aqueous sulfuric acid that comprises sulfuric acid and water.
7. according to claim 1 or 6 described lead accumulators, wherein, comprise a small amount of additive that can be dissolved in fully in this electrolyte in the described electrolyte.
8. lead accumulator according to claim 1 and 2, wherein, the fibrolaminar described fiber diameter of described inner layer glass is 4.5～4.8 μ m.
9. lead accumulator according to claim 1 and 2, wherein, the fibrolaminar described fiber diameter of described glass outer is 3.8～4.0 μ m.
10. lead accumulator according to claim 1 and 2, wherein, the fibrolaminar described average pore size of described inner layer glass is 12.0～13.0 μ m.
11. lead accumulator according to claim 1 and 2, wherein, the fibrolaminar described average pore size of described glass outer is 8.0～9.0 μ m.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210369447.7A CN102891272B (en) | 2012-09-28 | 2012-09-28 | Lead accumulator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210369447.7A CN102891272B (en) | 2012-09-28 | 2012-09-28 | Lead accumulator |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102891272A true CN102891272A (en) | 2013-01-23 |
| CN102891272B CN102891272B (en) | 2017-07-04 |
Family
ID=47534718
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210369447.7A Active CN102891272B (en) | 2012-09-28 | 2012-09-28 | Lead accumulator |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102891272B (en) |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105144431A (en) * | 2013-03-15 | 2015-12-09 | 霍林斯沃思和沃斯有限公司 | Three-region battery separator |
| CN106663768A (en) * | 2014-05-05 | 2017-05-10 | 戴瑞米克有限责任公司 | Improved lead-acid battery separators, electrodes, batteries, and methods of manufacture and use thereof |
| CN106848413A (en) * | 2017-01-20 | 2017-06-13 | 天能电池集团有限公司 | A kind of lead accumulator pole group |
| CN107078260A (en) * | 2014-09-15 | 2017-08-18 | 霍林斯沃思和沃斯有限公司 | Multizone battery separator |
| JP2017224483A (en) * | 2016-06-15 | 2017-12-21 | 日立化成株式会社 | Lead storage battery |
| CN109841767A (en) * | 2017-11-27 | 2019-06-04 | 广西明福科技有限公司 | A kind of safety-type lead storage battery |
| CN111433941A (en) * | 2017-12-05 | 2020-07-17 | 日立化成株式会社 | Separator for lead-acid battery and lead-acid battery |
| CN113964449A (en) * | 2021-09-02 | 2022-01-21 | 浙江南都电源动力股份有限公司 | Glass fiber partition board for improving power performance of lead-acid storage battery and forming method |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1571208A (en) * | 2004-05-08 | 2005-01-26 | 安阳成翔电器有限公司 | Valve controlled type fully-sealed colloidal electrolyte lead-acid accumulator |
| JP2011238492A (en) * | 2010-05-11 | 2011-11-24 | Nippon Sheet Glass Co Ltd | Separator for sealed lead-acid battery, and sealed lead-acid battery |
| CN102265427A (en) * | 2008-11-11 | 2011-11-30 | 日本板硝子株式会社 | Separator for sealed lead acid battery and sealed lead acid battery |
-
2012
- 2012-09-28 CN CN201210369447.7A patent/CN102891272B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1571208A (en) * | 2004-05-08 | 2005-01-26 | 安阳成翔电器有限公司 | Valve controlled type fully-sealed colloidal electrolyte lead-acid accumulator |
| CN102265427A (en) * | 2008-11-11 | 2011-11-30 | 日本板硝子株式会社 | Separator for sealed lead acid battery and sealed lead acid battery |
| JP2011238492A (en) * | 2010-05-11 | 2011-11-24 | Nippon Sheet Glass Co Ltd | Separator for sealed lead-acid battery, and sealed lead-acid battery |
Cited By (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105144431B (en) * | 2013-03-15 | 2018-11-27 | 霍林斯沃思和沃斯有限公司 | Three area's battery separators |
| CN105144431A (en) * | 2013-03-15 | 2015-12-09 | 霍林斯沃思和沃斯有限公司 | Three-region battery separator |
| CN106663768B (en) * | 2014-05-05 | 2020-06-05 | 戴瑞米克有限责任公司 | Improved lead acid battery separator, electrode, battery and method of manufacture and use thereof |
| CN106663768A (en) * | 2014-05-05 | 2017-05-10 | 戴瑞米克有限责任公司 | Improved lead-acid battery separators, electrodes, batteries, and methods of manufacture and use thereof |
| CN107078260A (en) * | 2014-09-15 | 2017-08-18 | 霍林斯沃思和沃斯有限公司 | Multizone battery separator |
| EP3195386A4 (en) * | 2014-09-15 | 2018-05-02 | Hollingsworth & Vose Company | Multi-region battery separators |
| US10431796B2 (en) | 2014-09-15 | 2019-10-01 | Hollingsworth & Vose Company | Multi-region battery separators |
| JP2017224483A (en) * | 2016-06-15 | 2017-12-21 | 日立化成株式会社 | Lead storage battery |
| CN106848413A (en) * | 2017-01-20 | 2017-06-13 | 天能电池集团有限公司 | A kind of lead accumulator pole group |
| CN109841767A (en) * | 2017-11-27 | 2019-06-04 | 广西明福科技有限公司 | A kind of safety-type lead storage battery |
| CN111433941A (en) * | 2017-12-05 | 2020-07-17 | 日立化成株式会社 | Separator for lead-acid battery and lead-acid battery |
| CN113964449A (en) * | 2021-09-02 | 2022-01-21 | 浙江南都电源动力股份有限公司 | Glass fiber partition board for improving power performance of lead-acid storage battery and forming method |
| CN113964449B (en) * | 2021-09-02 | 2024-04-19 | 浙江南都电源动力股份有限公司 | Glass fiber separator for improving power performance of lead-acid storage battery and forming method |
Also Published As
| Publication number | Publication date |
|---|---|
| CN102891272B (en) | 2017-07-04 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102891272A (en) | Lead storage battery | |
| CN108370071A (en) | Lead accumulator | |
| CN108370070A (en) | Lead accumulator | |
| CN202094232U (en) | Lithium manganate lithium ion power battery | |
| CN102945929B (en) | Multi-pole-set battery and manufacture method thereof | |
| CN113471550A (en) | Double-active-ion-enhanced chargeable and dischargeable hybrid zinc ion battery energy storage device | |
| CN210272536U (en) | Novel negative plate and lithium ion battery | |
| CN110600285B (en) | Lithium separation-free pre-lithium intercalation method for cathode of lithium ion electrochemical energy storage device | |
| CN102324524A (en) | Super battery negative plate | |
| CN1140005C (en) | High-energy accumlator with nano active carbone fibres (CNT) electrode | |
| CN104953169A (en) | Lithium ion low-temperature battery | |
| CN201886904U (en) | Laminated high-voltage mixing electrochemical capacitor | |
| KR101098377B1 (en) | Method for pre-doping with lithium ion for lithium ion capacitors | |
| CN106848413A (en) | A kind of lead accumulator pole group | |
| CN207183416U (en) | A kind of three-dimensional lithium ion battery | |
| CN202231110U (en) | Lithium ion secondary battery | |
| CN207233831U (en) | A kind of Novel square lithium battery standardizes module packaging housing | |
| CN201466120U (en) | Combination structure of battery core in vertical electric bicycle battery pack | |
| CN202050028U (en) | Battery core series connection structure | |
| CN203589158U (en) | High-voltage lithium ion battery | |
| CN201725851U (en) | Valve controlled lead acid battery of electric bicycle | |
| JP3182167U (en) | Coin-type carbon nanotube film capacitor | |
| CN220306467U (en) | Stepped tab structure | |
| CN103840218A (en) | Light environmentally-friendly lead acid storage battery | |
| CN203134911U (en) | Winding-type laminated lithium battery cell |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| EXSB | Decision made by sipo to initiate substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |