CN104078638B - Lead accumulator - Google Patents
Lead accumulator Download PDFInfo
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- CN104078638B CN104078638B CN201310109197.8A CN201310109197A CN104078638B CN 104078638 B CN104078638 B CN 104078638B CN 201310109197 A CN201310109197 A CN 201310109197A CN 104078638 B CN104078638 B CN 104078638B
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/06—Lead-acid accumulators
- H01M10/12—Construction or manufacture
- H01M10/14—Assembling a group of electrodes or separators
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M4/00—Electrodes
- H01M4/02—Electrodes composed of, or comprising, active material
- H01M4/14—Electrodes for lead-acid accumulators
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M4/00—Electrodes
- H01M4/02—Electrodes composed of, or comprising, active material
- H01M4/64—Carriers or collectors
- H01M4/70—Carriers or collectors characterised by shape or form
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M2220/00—Batteries for particular applications
- H01M2220/20—Batteries in motive systems, e.g. vehicle, ship, plane
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/10—Energy storage using batteries
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- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Connection Of Batteries Or Terminals (AREA)
Abstract
The present invention relates to a kind of lead accumulator, it has multiple element cells, the element cell has electrode assembly, electrolyte and element cell room, the electrode assembly and the electrolyte are accommodated in the element cell room, the electrode assembly is to be alternately arranged to form across dividing plate by multi-disc positive plate and multi-disc negative plate, the positive plate includes the positive electrode collector with positive pole ear and the positive electrode active material layer kept by the positive electrode collector, the negative plate includes the negative electrode collector with negative lug and the negative electrode active material layer kept by the negative electrode collector, it is characterized in that, at least one in the positive bus and negative bus-bar of the element cell has following structures：The width A of the part farthest from pole of the bus-bar is more than width B, the i.e. A of the part nearest from pole of the bus-bar>B.The lead accumulator improves busbar cast welding technique（COS）The weldability of middle bus-bar simultaneously improves flash-over characteristic.
Description
Technical field
The present invention relates to a kind of lead accumulator.More specifically to improving busbar cast welding technique（COS）In conflux
The weldability of row and the lead accumulator for improving flash-over characteristic.
Background technology
Lead accumulator is applied not only to start the power supply and back-up source of vehicle, is also widely used in main power source purposes, that is, is used as
Independent charging/discharging apparatus is helped with power supply such as electric automobile, electric bicycle, battery-operated motor cycle, Segway Human Transporter, small-sized electric
The electrical source of power of power car, golf cart etc., solar energy battery etc..
On how to improve the combination property of lead accumulator, considered in all fields in the prior art, and
And in view of the structure and performance of bus-bar and pole largely effect on the charge-discharge characteristic and cycle life of lead accumulator, so
Various researchs are also being carried out always to bus-bar.
The flat 5-59544 of Japanese patent gazette discloses a kind of bus-bar of lead accumulator, and it is formed by cast welding technique
, recess is formd on length direction of the top of the bus-bar at least along the bus-bar, the recess is most deep in middle body,
Gradually become shallower as towards peripheral part, and can be set from the deepest part of the recess to bus-bar periphery level or with fall
The more than one electrolyte discharge groove of taper.This bus-bar can control each in the casting mold formation by counter structure
The cooling velocity of partial fused solution so that the tip portion of all lugs all suitably melts, and avoids excessive melting, from
And it ensure that lug and strap and form the high welding of reliability.
The flat 2-210755 of Japanese patent gazette discloses a kind of casting casting mold in chloride plate group bus-bar portion, to this
Supplied in casting mold and fusion of lead and impregnate lug so as to form the bus-bar portion of electrode assembly, wherein the casting mold is formed except pole
The V/V of bus-bar forming portion outside portion is anode clusters 1：Negative electrode group is below 1.1, or removes the pole and bag of casting
The volume ratio for having included the bus-bar part including electrode assembly lug is anode clusters 1：Negative electrode group is below 1.05.This casting mold can
Reduce confluxing for negative electrode group lead discharging amount and to improve the reliability of weldability and reduce unfavorable condition and process number etc., so as to solve
Following technical problems in the presence of prior art：The polar plate number of negative electrode group is more than the polar plate number of anode clusters, thus negative electrode
The lead amount of the bus-bar of group necessarily increases, and so as to which the casting mold volume of the bus-bar of negative electrode group is big, institute's calorific requirement increases and reaches solid
Change bonding time it is elongated, then can due to not yet wait until negative electrode group fully solidify bonding in the case of pole group just taken off from casting mold
Go, thus cathode tab can be caused to deform, intensity deficiency or lose.
CN201130683Y discloses a kind of omnibus bar structure cast-weld of lead-acid accumulator, and it is included at the top of the group of pole
And the positive bus and negative bus-bar being connected respectively with positive and negative electrode plate electrode ear；For welding series connection between the group of pole located at remittance
Butt-welding fitting on stream row, the butt-welding fitting are the butt-welding fitting of half cone-shaped；With one of the remote butt-welding fitting on above-mentioned positive bus
The boss set on end.The lead liquid cooling velocity at position is slack-off where above-mentioned boss, positive plate lugs surface is melted with lead liquid
Melt as an entirety, improve welding quality.Also, bridge connects between the butt-welding fitting of above-mentioned half cone-shaped adds pole group
Cross-sectional area, so as to improve battery carrying heavy-current discharge performance.
CN101908608A discloses a kind of bus-bar of lead-acid cast welding storage battery, and institute is a little on the top surface of the bus-bar
In at least 2 points distances to the bus-bar bottom surface differ.This bus-bar can efficiently reduce the usage amount of lead,
Cooling velocity is improved, saves production cost, and be advantageous to be stripped.
But do not account for also in the prior art in busbar cast welding technique（COS）Weldability of the middle pole to bus-bar
And the document how influence of the electrical characteristics of bus-bar and bus-bar match with pole.In fact, busbar cast welding technique
Middle pole has obvious influence to the weldability of bus-bar and the electrical characteristics of bus-bar.Specifically, used when as shown in Figure 2
COS techniques form the width identical bus-bar of each several part, and when pole vertically stands in one end of the bus-bar, then COS is welded
Body both ends lead dosage is unbalanced, and in COS weld molds molten bath, and all positions are to the warm-up time of lead liquid, melting heat, cold
But the time is identical, and the welding effect that this results in whole COS welding bodies both ends is different, influences integral solder.For example, nothing
The bus-bar of pole one end has been cooled sufficiently, and has that the bus-bar of pole one end is also insufficient cooling, or the one of pole to be had
After the bus-bar at end is sufficiently cool, the bus-bar of no pole one end cooled for a long time, so as to cause each lug with
The welding degree of the various pieces of bus-bar is different, it is impossible to ensures that each lug and strap all forms the high welding of reliability.
On the other hand, the matching of bus-bar and pole also affects resistance, electrical collector and charge-discharge characteristic.
In the prior art, there is not yet by matching to bus-bar and pole simultaneously and draw in the net grid and lug
Setting improve the weldability of bus-bar and improve the lead accumulator of flash-over characteristic.
The content of the invention
The technical problems to be solved by the invention
It is an object of the invention to provide one kind to improve busbar cast welding technique（COS）The weldability of middle bus-bar simultaneously carries
The high lead accumulator of flash-over characteristic.
Solves the technological means of the technical problem
The present invention is by cast welding technique（COS techniques）The different design of width of the middle each several part for forming bus-bar, and
And the grid that draws in the net of pole plate is set with lug, so as to solve above-mentioned technical problem.
The present invention relates to following content.
（1）, a kind of lead accumulator, it has multiple element cells, the element cell have electrode assembly, electrolyte and
Element cell room, the electrode assembly and the electrolyte are accommodated in the element cell room, the electrode assembly be by multi-disc just
Pole plate and multi-disc negative plate are alternately arranged across dividing plate to be formed, the positive plate include with positive pole ear positive electrode collector and
The positive electrode active material layer kept by the positive electrode collector, the negative plate include with negative lug negative electrode collector and by
The negative electrode active material layer that the negative electrode collector is kept, it is characterised in that the positive bus and negative pole of the element cell
At least one in bus-bar has following structures：The width A of the part farthest from pole of the bus-bar is more than the remittance
Flow width B, the i.e. A of the part nearest from pole of row>B.
（2）, according to above-mentioned（1）Described lead accumulator, it is characterised in that the width of the bus-bar is from described from pole
Farthest reduces partially towards the linear property in the part nearest from pole.
（3）, according to above-mentioned（1）Described lead accumulator, it is characterised in that the width A and width B ratio A/
B is 1.05~2.
（4）, according to above-mentioned（1）Described lead accumulator, it is characterised in that the pole is located at the centre of the bus-bar
Part.
（5）, according to above-mentioned（1）Described lead accumulator, it is characterised in that the pole is located at the end of the bus-bar
Portion.
（6）, according to above-mentioned（1）Described lead accumulator, it is characterised in that the thickness of the positive pole ear is more than described negative
The thickness of pole lug.
（7）, according to above-mentioned（1）Described lead accumulator, it is characterised in that have the bus-bar institute of the structure right
The pole plate answered meets following conditions：Collector is to draw in the net grid, and the width a of lug and the grid that draws in the net are adjacent on frame
The ratio between the distance between two intersection points b a/b >=1.
（8）, according to above-mentioned（7）Described lead accumulator, it is characterised in that the a/b is 1~2.
（9）, according to above-mentioned（7）Described lead accumulator, it is characterised in that the institute covered in the width a of the lug
It is at least one to state intersection point.
（10）, according to above-mentioned（7）Described lead accumulator, it is characterised in that the institute covered in the width a of the lug
Intersection point is stated as 1~2.
（11）, according to above-mentioned（7）Described lead accumulator, it is characterised in that the width a of the lug is 5~15mm.
（12）, according to above-mentioned（7）Described lead accumulator, it is characterised in that the width B is more than the width a, i.e. B>
a。
（13）, according to above-mentioned（1）Described lead accumulator, it is characterised in that have the structure the bus-bar be
By cast welding technique come what is prepared, the cast welding technique comprises the steps：Prepare the casting with die cavity corresponding with the structure
Mould；Middle setting lead fused solution, electrode assembly is inverted the die cavity for causing lug to be added to the mold in the die cavity of the mold
In the lead fused solution in, the lead fused solution cooling and solidifying after be stripped, then by the electrode assembly turn and just
Stand up and put.
Invention effect
The present invention is by using cast welding technique（COS techniques）It is formed close to the width of the bus-bar part of pole and away from pole
The different design of the width of the bus-bar part of post, is uniformly distributed the lead amount of whole bus-bar, in warm-up time, melting heat
In the case of amount, cool time identical, the weldability of bus-bar each several part is substantially the same, reaches best welding effect.
On the basis of this, by being set to the grid that draws in the net of pole plate with lug, improve the width of lug and make it that lug covering is more
Draw in the net intersection point of the grid on frame（I.e. lug is connected with more drawing in the net intersection point of the grid on frame）, can reduce
Resistance, flash-over characteristic and electrical collector are improved, so as to improve the overall electrical collector and flash-over characteristic of lead accumulator.
Brief description of the drawings
Fig. 1 is the schematic perspective view of the electrode assembly used in the lead accumulator of the present invention.
Fig. 2 is the schematic diagram of the attachment structure of the bus-bar and pole used in the lead accumulator of prior art.Fig. 2
(a) it is stereogram, Fig. 2 (b) is front view, and Fig. 2 (c) is top view.
Fig. 3 is an embodiment of the attachment structure of the bus-bar and pole used in the lead accumulator of the present invention
Schematic diagram.Fig. 3 (a) is stereogram, and Fig. 3 (b) is top view, and Fig. 3 (c) is front view.Dotted line in Fig. 3 (b) represents existing skill
The each several part width of art is identical（I.e. each several part width is C）Bus-bar and the pole on the bus-bar schematic diagram.
Fig. 4 is the attachment structure and size of drawing in the net grid and lug used in the pole plate of the lead accumulator of the present invention
Schematic diagram.Fig. 4 (a) be draw in the net grid and lug attachment structure schematic diagram, the wherein width of lug is a, draws in the net grid and exists
The distance between two neighboring intersection point on frame is b；Fig. 4 (b) is after Fig. 4 (a) key element is simplified and amplified
Local schematic diagram.
Fig. 5 is another embodiment of the attachment structure of the bus-bar and pole used in the lead accumulator of the present invention
Schematic diagram.Fig. 5 (a) is stereogram, and Fig. 5 (b) is top view, and Fig. 5 (c) is front view.
Embodiment
Hereinafter, referring to the drawings to the lead accumulator of the present invention（Hereinafter sometimes referred to as " battery "）Illustrate.In the accompanying drawings,
For the purpose of simplifying the description, the constitutive requirements with substantially the same function are represented with same reference symbol.In addition, the present invention is simultaneously
It is not limited to following embodiment.
The present invention relates to a kind of lead accumulator, and it has multiple element cells, and the element cell has electrode assembly, electrolysis
Liquid and element cell room, the electrode assembly and the electrolyte are accommodated in the element cell room, the electrode assembly be by
Multi-disc positive plate and multi-disc negative plate are alternately arranged across dividing plate to be formed, and the positive plate includes the positive pole collection with positive pole ear
Electric body and the positive electrode active material layer kept by the positive electrode collector, the negative plate include the negative pole current collection with negative lug
Body and the negative electrode active material layer kept by the negative electrode collector, it is characterised in that the positive bus of the element cell
There are following structures with least one in negative bus-bar：The width A of the part farthest from pole of the bus-bar is more than
Width B, the i.e. A of the part nearest from pole of the bus-bar>B.
Fig. 1 is the schematic perspective view of the electrode assembly used in the lead accumulator of the present invention.
The bus-bar and the pole are by using cast welding technique（COS techniques）To be formed.Existing cast welding technique
It is the width identical bus-bar to form each several part, but the inventors have found that, for forming each several part of the bus-bar
Fused solution influenceed by from different with a distance from the pole, its melting heat and cooling velocity are different.For being formed
The part farthest from pole of the bus-bar is more easily accomplished cooling than the part nearest from pole and solidified, so as to cause to converge
Flow that the physical characteristic of each several part of row is uneven, and the combination of each lug is also uneven and stably.Fig. 2 is the lead of prior art
The schematic diagram of the attachment structure of bus-bar and pole used in battery.Fig. 2 (a) is stereogram, and Fig. 2 (b) is front view,
Fig. 2 (c) is top view.When the width identical bus-bar for forming each several part using COS techniques as shown in Figure 2, pole is vertically stood
At one end of the bus-bar, then COS welding bodies both ends lead dosage is unbalanced, and in COS weld molds molten bath, all positions
It is identical to the warm-up time of lead liquid, melting heat, cool time, this results in the welding effect at whole COS welding bodies both ends
Fruit is different, influences integral solder, for example, the bus-bar without pole one end has been cooled sufficiently, there is the bus-bar of pole one end
It is also insufficient cooling, or after the bus-bar of the one end for having pole is sufficiently cool, the bus-bar of no pole one end has cooled down
Cross for a long time, so as to cause each lug different from the welding degree of the various pieces of bus-bar, it is impossible to ensure each lug
The high welding of reliability is all formed with bus-bar.
But by using cast welding technique in the present invention（COS techniques）It is formed close to the width of the bus-bar part of pole
The design different with the width of the bus-bar part away from pole so that the width of the part farthest from pole of the bus-bar
A is more than width B, the i.e. A of the part nearest from pole of the bus-bar>B, it is uniformly distributed the lead amount of whole bus-bar,
In the case of warm-up time, melting heat, cool time identical, the weldability of each several part is substantially the same, reaches best weldering
Connect effect.
In the lead accumulator of the present invention, the width of preferably described bus-bar is from described farthest from pole partially towards institute
The linear property in the part nearest from pole is stated to reduce.Additionally, it is preferred that the width A and width B ratio is 1.05~2.
When the ratio is less than 1.05, the meltbility of the lead liquid of each several part for forming bus-bar is uneven, it is impossible to realizes good
Above-mentioned welding effect, and when the ratio is more than 2, it is possible to make the resistance of whole bus-bar can become big, electric discharge is special
Property and electrical collector decrease.
In the lead accumulator of the present invention, the pole can be located at the end of the bus-bar（As shown in Figure 3）, also may be used
With positioned at the center section of the bus-bar（As shown in Figure 5）.
Fig. 3 is an embodiment of the attachment structure of the bus-bar and pole used in the lead accumulator of the present invention
Schematic diagram.Fig. 3 (a) is stereogram, and Fig. 3 (b) is top view, and Fig. 3 (c) is front view.Wherein, as shown in Fig. 3 (a), the pole
Post is located at the end of the bus-bar；As shown in Fig. 3 (b), an end for not forming pole for the bus-bar（I.e. from pole
The farthest part of post）Width A be more than the bus-bar an end for foring pole（Part i.e. nearest from pole）
Width B, i.e. A>B.In order to more intuitively show the difference of the attachment structure of the bus-bar of the present invention and prior art and pole,
The each several part width that prior art is illustrate with dashed lines in Fig. 3 (b) is identical（I.e. each several part width is C）Bus-bar and
Pole on the bus-bar.Can clearly be seen that from Fig. 3 the present invention close pole bus-bar part width and far
From the difference of the width of the bus-bar part of pole.In addition, although for the bus-bar of the prior art, the present invention
The width of each several part of bus-bar changed, but the constancy of volume of whole bus-bar can also be kept, and with regard to width
For, relational expression as (A+B)/2=C can also be met.
Fig. 5 is another embodiment of the attachment structure of the bus-bar and pole used in the lead accumulator of the present invention
Schematic diagram.Fig. 5 (a) is stereogram, and Fig. 5 (b) is top view, and Fig. 5 (c) is front view.
Wherein, the pole is located at the center section of the bus-bar, and thus the width B of the center section of the bus-bar is small
In the width A of two end portions.
On the other hand, as described above, by using cast welding technique in the lead accumulator of the present invention（COS techniques）Make the remittance
Flow width B, i.e. As of the width A more than the part nearest from pole of the bus-bar of the part farthest from pole of row>During B,
The resistance of whole bus-bar can be made to become big, flash-over characteristic and electrical collector reduce.On the other hand, the inventors have found that, by making with institute
The collector of the pole plate corresponding to the bus-bar of structure is stated to draw in the net grid, and improves the width of lug and so that lug covers
More intersection points of the grid on frame that draw in the net of lid（I.e. lug is connected with more drawing in the net intersection point of the grid on frame）, can
To reduce resistance, improve flash-over characteristic and electrical collector, so as to improve the overall electrical collector and flash-over characteristic of lead accumulator.
Therefore, for the lead accumulator of the present invention, it is preferred that corresponding to the bus-bar with the structure
Pole plate meet following conditions：Collector is to draw in the net grid, the width a of lug with it is described draw in the net grid on frame adjacent two
The ratio between the distance between individual intersection point b a/b >=1, more preferably described a/b are 1~2.When the a/b is less than 1, in the width of lug
Inside it is not covered with drawing in the net intersection point of the grid on frame, resistance can not be effectively reduced, improve flash-over characteristic and electrical collector, and works as
When the a/b is more than 2, it is possible to make the width of lug wide, increase the dosage of ear pole material and the cast welding welding to bus-bar
Property has a negative impact.In addition, width of the width of lug no more than bus-bar, that is, the width B are more than the width
Spend a, i.e. B>a.Fig. 4 is the attachment structure and size of drawing in the net grid and lug used in the pole plate of the lead accumulator of the present invention
Schematic diagram.Fig. 4 (a) be draw in the net grid and lug attachment structure schematic diagram, the wherein width of lug is a, draws in the net grid
The distance between two neighboring intersection point on frame is b；Fig. 4 (b) is after Fig. 4 (a) key element is simplified and amplified
Local schematic diagram.
In the lead accumulator of the present invention, the intersection point covered in the width a of the lug is at least one, preferably 1
~2.In addition, the width a of the lug is 5~15mm, preferably 5~8mm.
Described intersection point of the grid on frame that draw in the net refers to draw in the net grid and is connected with frame in part in the present invention
Two end points of distance b shown in heart point, Fig. 4 (a) and Fig. 4 (b) are exactly described intersection point.
For the lead accumulator of the present invention, using different die cavitys, can be formed simultaneously by using a cast welding technique
Positive bus and negative bus-bar.
As a rule, the thickness of the positive pole ear be more than the negative lug thickness, i.e., the thickness of positive pole ear and
The thickness of negative lug is different, and the multi-disc positive pole ear gross thickness is more than the multi-disc negative lug gross thickness, so positive pole
Thermal capacity needed for the cast welding technique of bus-bar and negative bus-bar is also different.
Busbar cast welding technique employed in the present invention（COS techniques）Comprise the steps：Prepare with each several part
The mold of the different die cavity of width；Middle setting lead fused solution, electrode assembly is inverted and causes positive pole pole in the die cavity of above-mentioned mold
Ear and/or negative lug are added in the lead fused solution in the die cavity of mold, are stripped after lead fused solution cooling and solidifying, so
The electrode assembly is turned and upright placement afterwards.
By the way that above-mentioned each inscape is selected and combined, the present invention is implemented, has obtained following reality
Apply mode.
（Embodiment 1）
The lead accumulator of present embodiment has multiple element cells, the element cell have electrode assembly, electrolyte with
And element cell room, the electrode assembly and the electrolyte are accommodated in the element cell room, the electrode assembly is as shown in Figure 1
Electrode assembly, at least one bus-bar using shown in Fig. 3 in the positive bus and negative bus-bar of the element cell
With the attachment structure of pole, the width A of the part farthest from pole of the bus-bar be more than the bus-bar from pole most
The width B of near part, i.e. A>B, preferably described width A and the width B ratio A/B are 1.05~2.The electrode assembly
At least one attachment structure and dimension scale for drawing in the net grid and lug using shown in Fig. 4 in positive plate and negative plate, its
The ratio between the width a of middle lug and the distance b drawn in the net between two neighboring intersection point of the grid on frame a/b >=1, more preferably
The a/b is 1~2.The intersection point covered in the width a of the lug is at least one, preferably 1~2.In addition, institute
The width a for stating lug is 5~15mm, preferably 5~8mm.Width of the width of lug no more than bus-bar, that is to say, that institute
State width B and be more than the width a, i.e. B>a.
(1) manufacture of positive plate
With about 100：15：10 weight ratio carries out raw material lead powder (mixture of lead and lead oxide), water and dilute sulfuric acid
Mediate, so as to obtain the anode diachylon as positive active material.
On the other hand, will be squeezed into comprising the Pb alloys containing about 0.07 mass %Ca and about 1.3 mass %Sn by casting
. g., lead tape thick 1.3mm, the grid that draws in the net shown in Fig. 4 is obtained using reciprocating daraf(reciprocal of farad) of cutting.Then, draw in the net to fill on grid described
Above-mentioned anode diachylon.Then, by cutting off, curing, drying and being melted into, it is possible to obtain positive plate.Above-mentioned chemical conversion can be in group
Carried out before dressing up electrode assembly, electrode assembly can also be assembled into and be assembled to the later progress in the housing of lead accumulator.
(2) manufacture of negative plate
With about 100：5：10 weight ratios are mediated raw material lead powder, water, dilute sulfuric acid, so as to obtain as negative electrode active
The cathode lead plaster of material.
The Pb alloy raw materials that will contain about 0.07 mass %Ca and about 0.25 mass %Sn are squeezed into predetermined thickness by casting
Such as 0.65mm. g., lead tape, the grid that draws in the net shown in Fig. 4 is obtained using reciprocating daraf(reciprocal of farad) of cutting.Then, drawn in the net described on grid
Fill above-mentioned cathode lead plaster.Then, by cutting off, curing, drying and being melted into, it is possible to obtain negative plate.Above-mentioned chemical conversion can be with
Carried out before electrode assembly is assembled into, electrode assembly can also be assembled into and be assembled in the housing of lead accumulator later to enter
OK.
(3) manufacture of lead accumulator
The negative plate of 6 above-mentioned acquisitions and 5 above-mentioned positive plates is alternately overlapping across dividing plate respectively, so as to obtain figure
Electrode assembly shown in 1.Then, each positive pole ear in single electrode assembly and each negative lug are used into cast welding technique respectively
（COS techniques）It is welded together, obtains positive bus and negative bus-bar.The cast welding technique of use（COS techniques）Including under
State step：Prepare the mold of the different die cavity of the width with each several part；The middle setting lead fused solution in the die cavity of above-mentioned mold,
Electrode assembly, which is inverted, causes positive pole ear and negative lug to be added in the lead fused solution in the die cavity of mold, is melted in the lead
It is stripped after liquid cooling and solidifying, then turns the electrode assembly and upright placement.
Each electrode assembly is stored respectively in the 6 element cell rooms separated by spaced walls in the cell housing.Pass through
The negative bus-bar of one electrode assembly and the positive bus of adjacent electrode assembly are connected in series, thus successively by each pole plate
Group is connected in series, that is, unit battery is together in series.
Then, battery cover is installed in the opening of battery container.Then, liquid inlet set from battery cover to
Sulfuric acid of the concentration for 1.242g/ml is poured into each element cell as electrolyte, and is melted into the cell housing.
After chemical conversion, by with for the valve of gas caused by inside battery and pressure venting is fixed in liquid inlet, so as to obtain
Lead accumulator.
（Embodiment 2）
In embodiment 2, except being replaced using the bus-bar shown in Fig. 5 and the attachment structure of pole and size
Outside the attachment structure and size of bus-bar and pole shown in Fig. 3, other inscapes are identical with embodiment 1,
According to the final technique effect to be reached, these inscapes can suitably be selected from the scope described by embodiment 1
Take.
Hereinafter, the present invention is specifically explained based on embodiment, but these embodiments are the illustrations of the present invention,
The present invention is not limited to these embodiments.
（Embodiment 1~8）
Embodiment 1~8 is the specific example of embodiment 1, and wherein positive bus and negative bus-bar is identical
The collector of A, B value all same of shape, positive bus and negative bus-bar, positive plate and negative plate is to draw in the net grid,
And draw in the net grid a, b value it is identical.The cast welding technique of the parameter of each inscape and the flash-over characteristic of battery and bus-bar
（COS）The numerical value of weldability is referring to the value shown in aftermentioned table 1.
Below to flash-over characteristic, the cast welding technique of bus-bar of the lead accumulator of embodiment 1（COS）The measure of weldability
Method and condition determination illustrate.
1st, the assay method and condition determination of the discharge capacity of lead accumulator
The flash-over characteristic of lead accumulator is mainly embodied by the discharge capacity of the battery, and discharge capacity can also be anti-
Mirror the electric conductivity quality of pole plate grid.
Used battery specifications are 12V, 100Ah.That is, the rated voltage of battery is 12V, and 12V is 6 element cells
The summation of rated voltage, 1.75V are the final voltages of individual unit battery, the final voltage of whole battery for 1.75V × 6=
10.5V, in discharge process, voltage is gradually reduced, when the voltage of whole battery is reduced to 10.5V, discharge off.
The specific test condition of discharge capacity is as follows：
The new product battery within 30 days will be manufactured and carry out voltage, be 25 ± 2 in environment temperature after the measure of internal resistance and weight
After discharging into 10.5V terminations under the conditions of DEG C with 5A constant current, discharge capacity is calculated（Unit is ampere-hour, is abbreviated as Ah）.
2nd, the cast welding technique of bus-bar（COS）The assay method and condition determination of weldability
The weldability of bus-bar（Weldability i.e. between bus-bar and lug）Be by confirm lug longitudinal direction line of demarcation come
Judge, line of demarcation is more clear, starting position is more top, then the weldability of bus-bar is more bad.
（1）According to outward appearance（Range estimation, slide calliper rule）The criterion analyzed is as follows：
1. the surface of bus-bar has gloss, non-ripple, oxide layer is evenly distributed；
2. without misrun, stomata；
3. the size uniform of same position（Deviation is ± 0.15mm）；
4. lug fuses into one with bus-bar, the line of demarcation of lug is only capable of seeing a bit, and lug is bad without fracture, fusing etc.
Situation occurs.
（2）Cast welding technique to bus-bar（COS）The method that weldability is measured is as follows：
1. bus-bar is put into epoxy resin and carries out bonding solidification；
2. it is then, using electric saw that bus-bar is sawed-off from middle, burr processing, washing, drying then are carried out to section；
3. then, the mixed solution of water, glacial acetic acid and hydrogen peroxide is applied on the section, do not stop wipe directly
Crystallized to surface；
4. the welding effect between the size, bus-bar and the lug that then, confirm to have pore-free and stomata on the section.
（3）The cast welding technique of bus-bar（COS）The criterion that weldability is analyzed is as follows：
×：Lug fuses into one with bus-bar, but can see that obvious increased number of stomata and line of demarcation.
△：Start to can see that longitudinal line of demarcation of lug and a small amount of spilehole on the top of bus-bar, lug top with
Bus-bar merges.
○：Start to can see that longitudinal line of demarcation of lug near the center of bus-bar, lug top is melted with bus-bar
Close.
◎：Lug fuses into one with bus-bar, is only capable of somewhat seeing the line of demarcation of some lugs.
（Comparative example 1~4）
Comparative example 1~4 is the comparative example of embodiment 1, the parameter of each inscape and the flash-over characteristic of battery and
The cast welding technique of bus-bar（COS）The numerical value of weldability is referring to the value shown in aftermentioned table 1.
（Embodiment 9~16）
Embodiment 9~16 is a specific example of embodiment 2, and wherein positive bus and negative bus-bar is phase
With shape, A, B value all same of positive bus and negative bus-bar, the collector of positive plate and negative plate is to draw in the net lattice
Grid, and draw in the net grid a, b value it is identical.The cast welding work of the parameter of each inscape and the flash-over characteristic of battery and bus-bar
Skill（COS）The numerical value of weldability is referring to the value shown in aftermentioned table 1.
The assay method and condition determination of the discharge capacity of the lead accumulator of embodiment 2 are as follows：
Used battery specifications are 12V, 7.2Ah.That is, the rated voltage of battery is 12V, and 12V is 6 element cells
The summation of rated voltage, 1.75V are the final voltages of individual unit battery, the final voltage of whole battery for 1.75V × 6=
10.5V, in discharge process, voltage is gradually reduced, when the voltage of whole battery is reduced to 10.5V, discharge off.
The specific test condition of discharge capacity is as follows：
It is 25 ± 2 in environment temperature after the new product battery manufactured within 30 days is carried out into the measure of voltage, internal resistance and weight
After discharging into 10.5V terminations under the conditions of DEG C with 0.36A constant current, discharge capacity is calculated（Unit is ampere-hour, is abbreviated as
Ah）.
The cast welding technique of the bus-bar of the lead accumulator of embodiment 2（COS）The assay method and condition determination of weldability
It is identical with the method described in embodiment 1 and condition.
（Comparative example 5~8）
Comparative example 5~8 is the comparative example of embodiment 2, the parameter of each inscape and the flash-over characteristic of battery and
The cast welding technique of bus-bar（COS）The numerical value of weldability is referring to the value shown in aftermentioned table 1.
The manufacturing condition of the positive plate and negative plate of each embodiment and each comparative example, various structural elements are commented with transitivity
Valency result is shown in table 1 below.
Table 1
As shown in above-mentioned table 1, embodiment 1~8 and comparative example 1~4 are middle capacity batteries, embodiment 9~16 and
Comparative example 5~8 is compacted accumulator.It was found from embodiment and comparative example, for the lead accumulator of the present invention, it is desirable to the remittance
Flow width B, i.e. As of the width A more than the part nearest from pole of the bus-bar of the part farthest from pole of row>B, but
It is preferred that the width A and width B ratio is 1.05~2.When the ratio is less than 1.05, it is impossible to realize good upper
Welding effect is stated, and when the ratio is more than 2, flash-over characteristic decreases.In addition it is also preferred that the width a of lug with it is described
The ratio between the distance b drawn in the net between two neighboring intersection point of the grid on frame a/b >=1, more preferably described a/b are 1~2.Work as institute
When stating a/b less than 1, it is not covered with drawing in the net intersection point of the grid on frame in the width of lug, flash-over characteristic reduces, and works as institute
When stating a/b more than 2, it is possible to make the width of lug wide, increase the dosage of ear pole material and the cast welding weldability to bus-bar
Have a negative impact.Therefore, in order to simultaneously improve bus-bar in cast welding technique（COS）In weldability and lead accumulator put
Electrical characteristics, the particularly preferred width A and width B ratio is 1.05~2, and the a/b is 1~2.
Industrial applicibility
The lead accumulator of the present invention improves the weldability of bus-bar and improves flash-over characteristic, described to be applied to electronic vapour
The electrical source of power of car, electric bicycle, battery-operated motor cycle, Segway Human Transporter, Moped Scooter etc..
Claims (9)
1. a kind of lead accumulator, it has multiple element cells, and the element cell has electrode assembly, electrolyte and unit electricity
Pond room, the electrode assembly and the electrolyte are accommodated in the element cell room, the electrode assembly be by multi-disc positive plate and
Multi-disc negative plate is alternately arranged across dividing plate and formed, the positive plate include with positive pole ear positive electrode collector and by this just
The positive electrode active material layer that electrode current collector is kept, the negative plate include the negative electrode collector with negative lug and born by described
The negative electrode active material layer that electrode current collector is kept, it is characterised in that the positive bus and negative bus-bar of the element cell
In at least one there are following structures：The width A of the part farthest from pole of the bus-bar is more than the bus-bar
The width B of the part nearest from pole, wherein, the width A and width B ratio A/B is 1.05~2；With described
Pole plate corresponding to the bus-bar of structure meets following conditions：Collector is to draw in the net grid, width a and the drawing of lug
The ratio between distance b between two neighboring intersection point of the grid on frame a/b is 1~2；The width of the bus-bar from it is described from
Pole is farthest to be reduced partially towards the linear property in the part nearest from pole.
2. lead accumulator according to claim 1, it is characterised in that the pole is located at the pars intermedia of the bus-bar
Point.
3. lead accumulator according to claim 1, it is characterised in that the pole is located at the end of the bus-bar.
4. lead accumulator according to claim 1, it is characterised in that the thickness of the positive pole ear is more than the negative pole pole
The thickness of ear.
5. lead accumulator according to claim 1, it is characterised in that the friendship covered in the width a of the lug
Point is at least one.
6. lead accumulator according to claim 1, it is characterised in that the friendship covered in the width a of the lug
Point is 1~2.
7. lead accumulator according to claim 1, it is characterised in that the width a of the lug is 5~15mm.
8. lead accumulator according to claim 1, it is characterised in that the width B is more than the width a, i.e. B>a.
9. lead accumulator according to claim 1, it is characterised in that the bus-bar with the structure is to pass through casting
Come what is prepared, the cast welding technique comprises the steps Welding：Prepare the mold with die cavity corresponding with the structure；Institute
Middle setting lead fused solution in the die cavity of mold is stated, electrode assembly is inverted described in make it that lug is added in the die cavity of the mold
In lead fused solution, it is stripped after lead fused solution cooling and solidifying, then turns the electrode assembly and upright placement.
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| KR101767847B1 (en) * | 2016-12-14 | 2017-08-23 | 가부시키가이샤 지에스 유아사 | Method for connecting electrode plates of lead-acid battery, Method for manufacturing lead-acid battery, Lead-acid battery manufactured by the method, and Device for connecting electrode plates of lead-acid battery |
| CN110165135B (en) * | 2019-05-30 | 2022-02-01 | 超威电源有限公司 | Storage battery and negative plate tab pinching method thereof |
| CN110947934A (en) * | 2019-12-16 | 2020-04-03 | 安徽省华森电源有限公司 | Pole group cast welding device for lead storage battery production |
| WO2022061765A1 (en) * | 2020-09-25 | 2022-03-31 | 杭州铅锂智行科技有限公司 | Pole plate connection method for lead-acid battery |
| WO2022061766A1 (en) * | 2020-09-25 | 2022-03-31 | 杭州铅锂智行科技有限公司 | Polar plate connecting method for lead-acid storage battery |
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|---|---|---|---|---|
| CN201130683Y (en) * | 2007-11-13 | 2008-10-08 | 深圳市雄韬电源科技有限公司 | Omnibus bar structure cast-weld of lead-acid accumulator |
| CN201946672U (en) * | 2011-02-28 | 2011-08-24 | 肇庆理士电源技术有限公司 | Storage battery |
| CN203179977U (en) * | 2013-03-29 | 2013-09-04 | 松下蓄电池(沈阳)有限公司 | Lead storage battery |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| JP4691962B2 (en) * | 2004-11-12 | 2011-06-01 | パナソニック株式会社 | Lead acid battery |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201130683Y (en) * | 2007-11-13 | 2008-10-08 | 深圳市雄韬电源科技有限公司 | Omnibus bar structure cast-weld of lead-acid accumulator |
| CN201946672U (en) * | 2011-02-28 | 2011-08-24 | 肇庆理士电源技术有限公司 | Storage battery |
| CN203179977U (en) * | 2013-03-29 | 2013-09-04 | 松下蓄电池(沈阳)有限公司 | Lead storage battery |
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Effective date of registration: 20170313 Address after: Liaoning, Shenyang, China Liaoning economic and Technological Development Zone, 51 Kunming street, No. Applicant after: Panasonic Storage Battery (Shenyang) Co., Ltd. Applicant after: GS Yuasa International Corporation Address before: 110141 Shenyang economic and Technological Development Zone, Kunming, Lake Street, No. 51, No. Applicant before: Panasonic Storage Battery (Shenyang) Co., Ltd. Applicant before: Matsushita Electric Industrial Co., Ltd. |
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