CN113366675A - Grid base material, electrode and lead storage battery - Google Patents
Grid base material, electrode and lead storage battery Download PDFInfo
- Publication number
- CN113366675A CN113366675A CN202080012105.2A CN202080012105A CN113366675A CN 113366675 A CN113366675 A CN 113366675A CN 202080012105 A CN202080012105 A CN 202080012105A CN 113366675 A CN113366675 A CN 113366675A
- Authority
- CN
- China
- Prior art keywords
- lattice
- frame
- sectional area
- pair
- base material
- 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.)
- Pending
Links
- 239000000463 material Substances 0.000 title claims abstract description 59
- 238000003860 storage Methods 0.000 title description 7
- 239000007772 electrode material Substances 0.000 claims description 19
- 239000000758 substrate Substances 0.000 claims description 16
- 239000002253 acid Substances 0.000 claims description 11
- 239000007773 negative electrode material Substances 0.000 claims description 11
- 239000007774 positive electrode material Substances 0.000 claims description 9
- 230000000717 retained effect Effects 0.000 claims 2
- 238000000034 method Methods 0.000 description 13
- 238000000465 moulding Methods 0.000 description 9
- 238000010008 shearing Methods 0.000 description 8
- 238000005520 cutting process Methods 0.000 description 7
- 210000000988 bone and bone Anatomy 0.000 description 6
- 238000005266 casting Methods 0.000 description 5
- 238000004519 manufacturing process Methods 0.000 description 5
- 238000003825 pressing Methods 0.000 description 5
- 239000000654 additive Substances 0.000 description 4
- 230000000996 additive effect Effects 0.000 description 4
- 230000005484 gravity Effects 0.000 description 4
- 238000001035 drying Methods 0.000 description 3
- 230000004048 modification Effects 0.000 description 3
- 238000012986 modification Methods 0.000 description 3
- 102100033040 Carbonic anhydrase 12 Human genes 0.000 description 2
- 102100033029 Carbonic anhydrase-related protein 11 Human genes 0.000 description 2
- 101000867855 Homo sapiens Carbonic anhydrase 12 Proteins 0.000 description 2
- 101000867841 Homo sapiens Carbonic anhydrase-related protein 11 Proteins 0.000 description 2
- 101001075218 Homo sapiens Gastrokine-1 Proteins 0.000 description 2
- TZCXTZWJZNENPQ-UHFFFAOYSA-L barium sulfate Chemical compound [Ba+2].[O-]S([O-])(=O)=O TZCXTZWJZNENPQ-UHFFFAOYSA-L 0.000 description 2
- 239000003575 carbonaceous material Substances 0.000 description 2
- 239000008151 electrolyte solution Substances 0.000 description 2
- 238000003754 machining Methods 0.000 description 2
- 229910052751 metal Inorganic materials 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 238000002360 preparation method Methods 0.000 description 2
- 239000012783 reinforcing fiber Substances 0.000 description 2
- 239000002699 waste material Substances 0.000 description 2
- 239000004743 Polypropylene Substances 0.000 description 1
- 239000011149 active material Substances 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 239000000470 constituent Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005429 filling process Methods 0.000 description 1
- 239000003365 glass fiber Substances 0.000 description 1
- 150000002500 ions Chemical class 0.000 description 1
- WABPQHHGFIMREM-UHFFFAOYSA-N lead(0) Chemical compound [Pb] WABPQHHGFIMREM-UHFFFAOYSA-N 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 238000005498 polishing Methods 0.000 description 1
- -1 polypropylene Polymers 0.000 description 1
- 229920001155 polypropylene Polymers 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
Images
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M4/00—Electrodes
- H01M4/02—Electrodes composed of, or comprising, active material
- H01M4/64—Carriers or collectors
- H01M4/70—Carriers or collectors characterised by shape or form
- H01M4/72—Grids
- H01M4/73—Grids for lead-acid accumulators, e.g. frame plates
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/10—Energy storage using batteries
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
- Y02P70/50—Manufacturing or production processes characterised by the final manufactured product
Landscapes
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Cell Electrode Carriers And Collectors (AREA)
- Secondary Cells (AREA)
Abstract
The lattice base material of the present invention comprises: a frame portion having a pair of first frame members disposed to face each other in a first direction and a pair of second frame members disposed to face each other in a second direction intersecting the first direction; first lattice frameworks which are arranged on the inner side of the frame part and extend from one first framework to the other first framework; and a second lattice frame arranged inside the frame portion and extending from one of the second frame frames to the other of the second frame frames. And a second lattice frame having a first portion extending from one of the second frames to the boundary portion and a second portion extending from the boundary portion to the other second frame side in the extending direction thereof, wherein the second lattice frame is formed such that the average cross-sectional area of the first portion is larger than the average cross-sectional area of the second portion.
Description
Technical Field
One aspect of the invention relates to a lattice substrate, an electrode and a lead-acid battery.
Background
A paste-type lead acid battery is known, which includes electrodes formed by filling a positive electrode active material and a negative electrode active material in paste form into a grid body. The lattice body is formed by the following steps: the lattice body base material as a prototype of the lattice body is formed by casting. A lattice base material comprising: a frame portion formed of 4 frame members; a lattice section disposed in the frame section and formed of a lattice frame; and a pair of protruding portions (ear portions) provided on the frame portion (see, for example, patent document 1).
Documents of the prior art
Patent document
Patent document 1: japanese laid-open patent publication No. 2012-89511
Disclosure of Invention
Technical problem to be solved by the invention
For example, in the case of forming a lattice body base material by pouring molten metal from one side of a molding die by gravity casting or the like, a scrap portion such as a burr (burr) unnecessary as a lattice body is formed on the gate side. These scrap parts can be cut off by, for example, shearing (shearing) processing. In this case, the lattice skeleton extending in the direction perpendicular to the cut surface in the lattice portion may be deformed (bent) in the direction intersecting the paste surface under the influence of shear stress during cutting. When a lattice base material filled with a paste is conveyed, such deformation of the lattice framework may cause a trouble of hooking a piano wire or the like for peeling the lattice repeated base material from a conveyor or the like.
Accordingly, an object of one aspect of the present invention is to provide a lattice base material, an electrode, and a lead-acid battery, which can reduce deformation of a lattice frame, which occurs when a scrap portion formed on the outer side of a frame portion is cut.
Means for solving the technical problem
A lattice base material according to an aspect of the present invention includes: a frame portion having a pair of first frame members disposed to face each other in a first direction and a pair of second frame members disposed to face each other in a second direction intersecting the first direction; first lattice frameworks which are arranged on the inner side of the frame part, extend from one first framework to the other first framework and are arranged along the second direction; and a second lattice frame which is disposed inside the frame portion, extends from one of the second frame members to the other second frame member, and is arranged along the first direction, the second lattice frame being configured by a first portion extending from the one of the second frame members to a predetermined position in the second direction, and a second portion extending from the predetermined position to the other second frame member, the second lattice frame being formed such that the cross-sectional area of the first portion is larger than the cross-sectional area of the second portion.
As described above, the scrap portion as the lattice body base material is formed on the outer side of the frame portion corresponding to the gate side, in other words, on the outer side of one of the frame members (one of the second frame members) forming the frame portion. Further, if such a scrap portion is cut by shearing, the second lattice frame perpendicular to the cut surface, particularly, a portion close to one of the second lattice frames may be deformed by the influence of the shearing force load during the machining. The lattice base material of this structure is formed as follows: the cross-sectional area of the first portion of the second lattice skeleton, which is one of the lattice skeletons forming the lattice body, is larger than the cross-sectional area of the second portion. Namely, the following are formed: the cross-sectional area of the first portion of the second frame bone along the extending direction and near one of the second frame bones is relatively increased. Therefore, the load resistance to shear load of the first portion is superior to that of the second portion. This can reduce deformation of the second lattice frame, which occurs when the scrap portion formed outside the frame portion is cut.
A lattice base material according to an aspect of the present invention includes: a frame portion having a pair of first frame members disposed to face each other in a first direction and a pair of second frame members disposed to face each other in a second direction intersecting the first direction; first lattice frameworks which are arranged on the inner side of the frame part, extend from one first framework to the other first framework and are arranged along the second direction; and a second lattice frame which is disposed inside the frame portion, extends from one of the second frame members to the other second frame member, and is arranged along the first direction, the second lattice frame being configured by a first portion extending from the one of the second frame members to a predetermined position in the second direction, and a second portion extending from the predetermined position to the other second frame member, the second lattice frame being formed such that an average cross-sectional area of the first portion is larger than an average cross-sectional area of the second portion.
As described above, the scrap portion as the lattice body base material is formed on the outer side of the frame portion corresponding to the gate side, in other words, on the outer side of one of the frame members (one of the second frame members) forming the frame portion. Further, if such a scrap portion is cut by shearing, the second lattice frame perpendicular to the cut surface, particularly, a portion close to one of the second lattice frames may be deformed by the influence of the shearing force load during the machining. The lattice base material of this structure is formed as follows: the thickest part is formed in a first part of a second lattice skeleton which is one of the lattice skeletons forming the lattice body, and the average cross-sectional area of the first part of the second lattice skeleton is larger than the average cross-sectional area of the second part. Namely, the following are formed: the average cross-sectional area of the first portion of the second frame bone along the extending direction and near one of the second frame bones is relatively increased. Therefore, the load resistance to shear load of the first portion is superior to that of the second portion. This can reduce deformation of the second lattice frame, which occurs when the scrap portion formed outside the frame portion is cut.
In the lattice base material according to one aspect of the present invention, the thickest portion having the largest cross-sectional area in the second lattice skeleton may be formed in the first portion. In this case, the deformation of the second lattice frame, which occurs when the scrap portion formed outside the frame portion is cut, can be effectively reduced.
In the lattice base material according to one aspect of the present invention, the first portion of the second lattice skeleton may be formed as: the cross-sectional area is gradually increased from the predetermined position toward one of the second frame members. This structure can reduce deformation in processing more easily and effectively.
In the lattice body base material according to the aspect of the invention, the first frame may be formed with a pair of protruding portions that are provided so as to protrude outward of the frame portion in the direction in which the first lattice frame extends and that are provided so as to face each other in the direction in which the first lattice frame extends. This structure enables hanging conveyance using the protruding portion when conveying the lattice base material.
In the lattice base material according to an aspect of the present invention, the predetermined position may be located in a region between the pair of projections. This structure enables the first portion and the second portion in the second lattice skeleton to be set appropriately.
In the lattice base material according to an aspect of the present invention, the predetermined position may be located at an intersection with the first lattice skeleton. This structure enables the boundary portion of the first portion and the second portion to be easily formed, and therefore, it becomes easy to form a mold.
In the lattice body base material according to one aspect of the present invention, the predetermined position may be located at an intersection of the first lattice frame adjacent to one of the second frame members. The lattice body base material can easily form the boundary portion between the first portion and the second portion, and thus the formation of the mold becomes easy.
An electrode according to an aspect of the present invention includes: a lattice body formed of the lattice body base material; and an electrode material held in the lattice body. The electrode having this structure is configured to include a lattice base material in which the second lattice skeleton is less deformed when the scrap portion formed on the outer side of the frame portion is cut.
A lead-acid battery according to an aspect of the present invention includes: a positive electrode having a lattice body formed of the lattice body base material and a positive electrode material held in the lattice body; a negative electrode having a lattice body and a negative electrode material, the negative electrode material being held in the lattice body; and a separator disposed between the positive electrode and the negative electrode. The lead-acid battery of this configuration includes a lattice base material in which the second lattice frame of the lattice base material is less deformed when the scrap portion formed on the outer side of the frame portion is cut.
Effects of the invention
According to an aspect of the present invention, it is possible to reduce deformation of the lattice framework, which occurs when the scrap portion formed on the outer side of the frame portion is cut.
Drawings
Fig. 1 is a perspective view showing a part of a battery according to an embodiment.
Fig. 2 is a plan view showing a positive electrode (negative electrode) according to an embodiment.
Fig. 3 is a plan view showing a lattice base material according to an embodiment.
Fig. 4 is a plan view showing a vicinity of a boundary portion between the first portion and the second portion of the second lattice skeleton in fig. 3 in an enlarged manner.
FIG. 5 is a plan view of a lattice substrate comprising a waste portion.
Fig. 6 is a plan view showing the vicinity of the boundary between the first portion and the second portion of the second lattice skeleton of the enlarged modified row 1.
Fig. 7 is a plan view showing the vicinity of the boundary between the first portion and the second portion of the second lattice skeleton of the enlarged modified row 2.
Fig. 8 is a plan view showing the vicinity of the boundary between the first portion and the second portion of the second lattice skeleton of the enlarged modified row 3.
Detailed Description
Hereinafter, preferred embodiments of one aspect of the present invention will be described in detail with reference to the accompanying drawings. In the description of the drawings, the same or corresponding elements are denoted by the same reference numerals, and redundant description thereof is omitted.
[ lead storage batteries ]
As shown in fig. 1, the lead acid battery 1 is, for example, a valve regulated lead acid battery. The lead storage battery 1 includes an electrode group 3 and a case 5, and the case 5 accommodates the electrode group 3.
The electrode group 3 includes a plurality of positive electrodes 10, a plurality of negative electrodes 12, and a plurality of separators 13. In the electrode group 3, the separators 13 are interposed between the positive electrodes 10 and the negative electrodes 12, and the positive electrodes 10 and the negative electrodes 12 are alternately arranged. In the present embodiment, the negative electrode 12 is disposed at an end portion in the arrangement direction (hereinafter, may be simply referred to as "arrangement direction") of the positive electrode 10, the negative electrode 12, and the separator 13 in the electrode group 3.
As shown in fig. 2, the positive electrode 10 has a positive electrode lattice body 10 a. The positive electrode grid body 10a has a positive electrode collector tab 10 b. The positive electrode grid body 10a is provided with a positive electrode material 10 c. The positive electrode material 10c may be obtained by including a positive electrode active material and an additive. The positive electrode active material is, for example, lead powder. Examples of the additive include a carbon material and short reinforcing fibers. The positive electrode grid body 10a is provided with projections 10d, 10 e. The protrusions 10d, 10e are arranged at a predetermined interval and protrude outward from the positive electrode grid body 10 a.
The negative electrode 12 has a negative electrode lattice body 12 a. The negative electrode grid body 12a has a negative electrode collector tab 12 b. In the negative electrode lattice body 12a, a negative electrode material 12c is provided. The negative electrode material may contain a negative electrode active material and an additive. The negative electrode active material is, for example, spongy lead. Examples of the additive include barium sulfate, a carbon material, and short reinforcing fibers. The negative electrode grid body 12a is provided with projections 12d, 12 e. The protrusions 12d, 12e are arranged at a predetermined interval, and protrude outward from the negative electrode grid body 12 a.
As shown in fig. 1, the separator 13 is not particularly limited as long as it can electrically insulate the positive electrode 10 and the negative electrode 12 from each other, and allows ions to penetrate therethrough, and has resistance to oxidation on the positive electrode 10 side and reduction on the negative electrode 12 side. Examples of the material (material) of the separator 13 include glass fiber, resin, and inorganic substance.
Each positive electrode 10 is electrically connected to a positive electrode terminal 14. Each positive electrode 10 is electrically connected to the positive electrode terminal 14 via a positive electrode connecting bar 17. Each negative electrode 12 is electrically connected to a negative electrode terminal 16. Each negative electrode 12 is electrically connected to a negative terminal 16 by a negative connecting bar 18.
The housing 5 has a body 20 and a cover 22. The body 20 is a box-shaped electrolytic cell. The body 20 is formed of a material such as polypropylene. The main body 20 includes 4 side surface parts 20a and a bottom part (not shown).
The cover 22 covers the opening of the body 20. The lid 22 is provided with a first terminal portion 24, a second terminal portion 26, and a control valve 28, the first terminal portion 24 being provided with the positive electrode terminal 14, and the second terminal portion 26 being provided with the negative electrode terminal 16.
[ lattice base Material ]
Next, the lattice base 30 constituting the positive electrode lattice body 10a and the negative electrode lattice body 12a will be described. The positive electrode lattice body 10a and the negative electrode lattice body 12a can be produced by processing the lattice body base material 30. As shown in fig. 3, the lattice body base material 30 includes a frame portion 32, a lattice portion 34, and protruding portions 36a and 36 b. In the following description, the directions (X direction, Y direction) defined in fig. 3 will be used for description. The X direction (first direction), the Y direction (second direction), and the Z direction are perpendicular to (intersect) each other.
The frame portion 32 defines an internal space to hold electrode materials (the positive electrode material 10c and the negative electrode material 12c shown in fig. 2). The frame portion 32 is a rectangular frame. Has a pair of first frame members 40a, 40b and a pair of second frame members 42a, 42 b. In the present embodiment, each of the pair of first frame members 40a, 40b is shorter than each of the pair of second frame members 42a, 42 b.
The pair of first frame members 40a, 40b are opposed to each other in the X direction. The pair of first frame members 40a, 40b each extend in the Y direction. The pair of first frame members 40a, 40b each have a hexagonal cylindrical shape. That is, the first frame members 40a and 40b have a hexagonal cross-sectional shape intersecting the Y direction. In the present embodiment, the first frame members 40a and the first frame members 40b may have the same thickness (cross-sectional area along the Y direction) or different thicknesses.
The pair of second frame members 42a, 42b are opposed to each other in the Y direction. The pair of second frame members 42a, 42b each extend in the X direction. The pair of second frame members 42a, 42b each have a hexagonal cylindrical shape. That is, the cross-sectional shape of the second frame members 42a and 42b intersecting the X direction is hexagonal. In this embodiment, the second frame 42a is thicker than the second frame 42 b. The first frame members 40a, 40b and the second frame members 42a, 42b are connected to each other at their ends.
The projections 36a and 36b are provided on a pair of first ribs 40a and 40b of the frame portion 32, respectively. The projections 36a, 36b are arranged to face each other in the X direction. The protrusion 36a is provided on the first frame 40 a. The protruding portion 36a is disposed on one end side in the extending direction of the first frame 40 a. That is, the protruding portion 36a is disposed closer to the second frame 42a of the frame 32 than the center portion of the first frame 40a in the extending direction. The protruding portion 36a protrudes outward from the first frame 40a in the X direction. The protruding portion 36b is provided on the first frame 40 b. The protruding portion 36b is disposed on one end side in the extending direction of the first frame 40 b. That is, the protruding portion 36b is disposed closer to the second frame 42a of the frame 32 than the center portion of the first frame 40a in the extending direction. The protruding portion 36b protrudes outward from the first frame 40b in the X direction. The protruding portion 36b constitutes a convex portion 10e of the positive electrode 10 or a convex portion 12e of the negative electrode 12 (refer to fig. 2).
The lattice portion 34 is provided in the frame portion 32, and holds electrode materials (the positive electrode material 10c and the negative electrode material 12c shown in fig. 2). The lattice section 34 has a plurality of first lattices 44 and a plurality of second lattices 45.
The plurality of first lattice frameworks 44 each extend along the X direction. That is, one end of the first lattice frame 44 is connected to the first frame 40a, and the other end of the first lattice frame 44 is connected to the first frame 40 b. The plurality of first lattice frames 44 are arranged at predetermined intervals from each other in the Y direction. The plurality of first lattice frameworks 44 each have a hexagonal column shape. That is, each of the first lattice frameworks 44 has a hexagonal cross-sectional shape intersecting the X direction.
The plurality of second lattice frameworks 45 each extend along the Y direction. That is, one end of the second lattice frame 45 is connected to the second frame 42a, and the other end of the second lattice frame 45 is connected to the second frame 42 b. The plurality of second lattice frameworks 45 are arranged at predetermined intervals from each other in the X direction. The plurality of second lattice frameworks 45 each have a hexagonal column shape. That is, the cross-sectional shape of each of the second lattice frameworks 45 intersecting the Y direction is hexagonal. The first lattice frameworks 44 and the second lattice frameworks 45 may have the same thickness or different thicknesses.
The second lattice framework 45 will be described in detail below. As shown in fig. 4, the second lattice skeleton 45 has: a first portion 47 extending from one of the second frames 42a to a predetermined position in the Y direction; and a second portion 48 extending from a predetermined position to the other second frame 42b (see fig. 3). Next, a predetermined position between one of the second frames 42a and the other second frame 42b (see fig. 3) of the second lattice frame 45 will be described as a boundary portion 49 between the first portion 47 and the second portion 48. The length ratio of the first portion 47 to the second portion 48 in the extending direction of the second lattice skeleton 45 is 1: 7-1: 13. also, the second lattice skeleton 45 is formed such that the average cross-sectional area a1 of the first portion 47 is larger than the average cross-sectional area a2 of the second portion 48. That is, the cross-sectional area CA1 of the second lattice skeleton 45 varies in the extending direction. The boundary portion 49 is formed in the region between the pair of protruding portions 36a and 36 b. Further, in the present embodiment, the boundary portion 49 is formed at the intersection with the first lattice skeleton 44.
In addition, the average sectional areas a1, a2 of the second lattice skeleton 42 (the first portion 47 and the second portion 48) are calculated by: the volume of the target site measured by a known method (for example, a method of measuring by archimedes' law, a method of measuring by a laser volumeter or an acoustic volumeter, or the like) is divided by the longitudinal direction (Y-axis direction).
In the present embodiment, the first portion 47 of the second lattice skeleton 45 is formed as: the sectional area CA1 is gradually increased from the boundary portion 49 toward one of the second frame members 42 a. In contrast, the cross-sectional area CA2 of the second portion 48 of the second lattice skeleton 45 is constant in the extending direction. In the second lattice frame 45, the thickest portion 45a having the largest cross-sectional area CA1 is formed at the connection portion with the second frame 42a in the first portion 47. The thickest part 45a of the first part 47 has a cross-sectional area CA1 that is 1.4 to 2.0 times the cross-sectional area CA2 of the second part 48.
As shown in fig. 3, the frame portion 32 is provided with a convex portion 50. The convex portion 50 is provided on the first frame 40 b. The convex portion 50 is disposed on the other end side in the extending direction of the first frame 40 b. The convex portion 50 is disposed at a predetermined interval from the protruding portion 36b in the Y direction. The convex portion 50 protrudes outward from the first frame 40b in the X direction. The convex portion 50 constitutes the convex portion 10d of the positive electrode 10 and the convex portion 12d of the negative electrode 12.
[ method for producing lead-acid Battery ]
Next, a method for manufacturing the lead-acid battery 1 will be described. The method for manufacturing the lead storage battery 1 includes an electrode manufacturing step and an assembling step. The electrode manufacturing process is a process for obtaining electrodes (the positive electrode 10 and the negative electrode 12 shown in fig. 2), and includes, for example, a preparation process, a filling process, a pressing process, a conveying process, a curing process, a drying process, and a cutting process.
First, the following preparation steps are performed: the lattice base material 30 shown in fig. 3 is prepared. The number of lattice base materials 30 to be prepared is determined according to the number of electrodes to be manufactured. The lattice base material 30 can be manufactured by casting, for example. In the present embodiment, the lattice base 30 is formed by pouring molten metal from one side of the molding die by gravity casting or the like.
Specifically, a pair of molding dies of the lattice body base material 30 is prepared, and the lattice body base material 30 corresponds to the above-described shape. In a state where the pair of molding dies is assembled, a gate for pouring molten lead is formed outside the second frame 42 a. Also, the molding die is disposed so that a portion corresponding to the second frame rib 42b is located lower than a portion corresponding to the second frame rib 42 a. Molten lead is poured from the gate of the molding die configured in this manner. After a predetermined time has elapsed after molten lead is supplied to the molding dies, one of the molding dies is removed.
The lattice body base material 30 is formed by being released from the molding die. As shown in fig. 5, in the lattice body base material 30 formed in this manner, a scrap portion 60 such as a burr is formed on the outer side of the second frame 42a corresponding to the gate side. These scrap portions 60 are cut according to the outer shape of the second frame bone 42a (the dotted line C shown in fig. 5) by, for example, a shearing process.
Next, the following filling step was performed: an electrode material (active material) paste (not shown) is filled into the lattice substrate 30 shown in fig. 3. In the filling step, the electrode material paste is filled into the lattice base 30 horizontally placed on the conveyor (not shown) by a filling machine (not shown). The filled lattice body base material 30 filled with the electrode material paste is continuously conveyed by the conveyor. A piano wire for peeling off the filled lattice base material 30 attached to the conveyor belt is provided in the conveyor. The piano wire is stretched in a direction transverse to the conveying direction of the conveying device.
Next, the following pressing process was performed: the electrode material paste that has been filled into the lattice body substrate 30 is pressed. In the pressing step, the grid base 30 is vertically sandwiched by a pressing roller (not shown) to apply pressure to the electrode material paste. In the pressing step, the electrode material paste is filled into the lattice portion 34 of the lattice base material 30 from the filling side where the electrode material paste is filled to the opposite side of the filling side, thereby improving the filling property of the electrode material paste. The thickness of the electrode material paste filled in the lattice body base 30 can be made uniform, and the electrode material paste can be physically adhered to the lattice portion 34.
Next, the lattice base material 30 filled with the electrode material paste is transported. The lattice base material 30 is supported and conveyed by a pair of conveyor belts (not shown). Specifically, the projections 36a and 36b of the lattice body base material 30 are supported by a pair of conveyor belts. The lattice base material 30 is transferred from a horizontal state to a hanging state with respect to the conveyor belt, and then conveyed in the hanging state. Then, the following steps are performed: a curing step of curing the lattice substrate 30 filled with the electrode material paste; and a drying step of drying the lattice base 30 filled with the electrode material paste. The lattice body base material 30 is cured and dried in a suspended state in which the pair of projections 36a and 36b are supported by a support member (not shown).
Next, a cutting step of cutting the lattice base material 30 is performed. In the cutting process, the protruding portions 36b of the lattice body base material 30 are cut to form the projections 10e, 12e (refer to fig. 2). Thus, an unformed electrode is obtained in which the positive electrode lattice body 10a or the negative electrode lattice body 12a is filled with the electrode material paste. In cutting the lattice substrate 30, for example, a rotary cutter may be used. In the cutting step, polishing may be performed to remove the electrode material paste accumulated on the frame portion 32.
Next, the following assembly steps are performed: the constituent members including the electrode plates are assembled to obtain the lead storage battery 1 shown in fig. 1. In the assembly process, the electrode group 3 is obtained by: the unformed positive electrode and the unformed negative electrode are alternately laminated via the separator 13, and then the positive electrode collector tabs 10b of the positive electrode lattice body 10a are connected (welded) to each other by the positive electrode connecting strip 17, and the negative electrode collector tabs 12b of the negative electrode lattice body 12a are connected (welded) to each other by the negative electrode connecting strip 18. Then, the electrode group 3 is accommodated in the main body 20 of the case 5, thereby producing an unformed battery. Next, after the electrolyte solution is injected into the unformed battery, the battery is formed into an electrolytic cell by applying a direct current, and then the specific gravity of the formed electrolyte solution is adjusted to an appropriate specific gravity, thereby obtaining the lead-acid battery 1.
As described above, as shown in fig. 4, the lattice base 30 according to the above embodiment is formed as follows: the average cross-sectional area a1 of the first portion 47 in the second lattice framework 45 for forming the lattice body substrate 30 is larger than the average cross-sectional area a2 of the second portion 48. That is, the second lattice skeleton 45 is formed as: the cross-sectional area CA of the second lattice frame 45 changes along the extending direction such that the average cross-sectional area a on one second frame 42a side becomes larger. Thus, the load resistance to shear load of the first portion 47 is superior to that of the second portion 48. As a result, deformation of the lattice framework, which occurs when the scrap part 60 formed on the outer side of the frame portion 32 is cut by the shearing process, can be reduced.
In the lattice base material 30 according to the above embodiment, the first portion 47 of the second lattice skeleton 45 is formed as: the sectional area CA1 is gradually increased from the boundary portion 49 toward one of the second frame members 42 a. This can reduce the deformation of the second lattice frame 45 during processing more easily and effectively.
In the lattice base material 30 according to the above embodiment, the thickest portion 45a having the largest cross-sectional area CA1 is formed in the first portion 47 of the second lattice skeleton 45. This makes it easier to make the load resistance against the shear load of the first portion 47 more excellent than the load resistance against the shear load of the second portion 48.
In the lattice body base material 30 according to the above embodiment, the boundary portion 49 is formed in the region between the pair of protruding portions 36a and 36b (see fig. 3). Thereby, the first portion 47 and the second portion 48 can be appropriately set in the second lattice framework 45.
In the lattice body base material 30 according to the above embodiment, the boundary portion 49 is formed at the intersection with the first lattice skeleton 44, and therefore the boundary portion 49 between the first portion 47 and the second portion 48 can be easily formed. In other words, the casting mold of the lattice body base material 30 can be easily formed.
Although the embodiment of the present invention has been described above, the present invention is not necessarily limited to the above embodiment, and various modifications can be made without departing from the scope of the invention.
(deformation line 1)
In the above embodiment, the example in which the first portion 47 of the second lattice skeleton 45 is formed such that the cross-sectional area CA1 gradually increases from the boundary portion 49 toward one of the second frame bones 42a as shown in fig. 4 has been described, but the present invention is not limited thereto. For example, as shown in fig. 6, on the premise that the sectional area CA11 of the entire first portion 147 is equal and the sectional area CA12 of the entire second portion 148 is equal, it may be formed such that: the cross-sectional area CA11 of first portion 147 is greater than the cross-sectional area CA12 of the entirety of second portion 48. That is, the second lattice skeleton 45 may be formed as: the cross-sectional area CA is increased from the other second frame member 42b toward the one second frame member 42 a. In this case, as in the above embodiment, the load resistance against the shear load of the first portion 147 is superior to the load resistance against the shear load of the second portion 48. As a result, deformation of the lattice framework, which occurs when the scrap portion 60 formed on the outer side of the frame portion 32 is cut, can be reduced.
(deformation line 2)
In the above embodiment, the description has been given by taking an example in which the thickest portion 45a of the second lattice frame 45 is formed in a portion connected to one of the second frame members 42a as shown in fig. 4, but the present invention is not limited to this. For example, on the premise that the average sectional area a11 of the first portion 247 is formed to be larger than the average sectional area a12 of the second portion 48, as shown in fig. 7, the thickest portion 245a may be formed at any portion of the first portion 247. For example, the thickest portion 245a may be provided near the center portion of the first section 247 in the extending direction of the second lattice skeleton 45. In this case, as in the above embodiment, the load resistance to the shear load of the first section 247 is superior to that of the second section 48. As a result, deformation of the lattice framework, which occurs when the scrap portion 60 formed on the outer side of the frame portion 32 is cut, can be reduced.
(modification 3)
In the above embodiment and the modified examples, the boundary portion 49 is formed at the intersection with the first lattice skeleton 44, but the present invention is not limited to this. For example, as shown in fig. 8, the boundary portion 49 may be formed at a portion of the second lattice framework 45 that does not intersect the first lattice framework 44. At this time, also in the extending direction of the second lattice frame 45, the load resistance against the shear load of the first portion 347 closer to the second frame 42a side is superior to the load resistance against the shear load of the second portion 348. As a result, deformation of the lattice framework, which occurs when the scrap portion 60 formed on the outer side of the frame portion 32 is cut, can be reduced.
(other modified series)
In the above embodiment, the following embodiments are described as examples: as shown in fig. 3, each of the pair of first frames 40a, 40b is shorter than each of the pair of second frames 42a, 42b in the frame portion 32. However, each of the pair of first frame members 40a, 40b may be longer than each of the pair of second frame members 42a, 42b, and may be equal in length.
In the above embodiment, the following embodiments are described as examples: the first frames 40a, 40b and the second frames 42a, 42b of the frame portion 32, and the first lattice frame 44 and the second lattice frame 45 of the lattice portion 34 are hexagonal columns in shape. However, the first and second frames 40a, 40b, 42a, 42b of the frame portion 32, and the first and second lattices 44, 45 of the lattice portion 34 may be other shapes (a cylinder, a polygonal column, or the like).
In the above-described embodiment and the modified examples, the boundary portion 49 is formed in the region between the pair of protruding portions 36a and 36b, but the boundary portion 49 may be formed outside the region between the pair of protruding portions 36a and 36 b.
The above embodiments and other modifications can be made to the present invention in any appropriate combination.
Description of the symbols
1-lead storage battery, 10-positive electrode, 10 a-positive electrode lattice body, 12-negative electrode, 12 a-negative electrode lattice body, 30-lattice body base material, 32-frame, 34-lattice body, 36 a-projection, 36 b-projection, 40 a-first frame (first frame on one side), 40 b-first frame (first frame on the other side), 42 a-second frame (second frame on one side), 42 b-second frame (second frame on the other side), 44-first lattice frame, 45-second lattice frame, 45a, 245 a-thickest part, 47, 147, 247-first part, 48-second part, 49-boundary part, 50-projection, 60-waste part.
Claims (10)
1. A lattice base material comprising:
a frame portion having a pair of first frame members disposed to face each other in a first direction and a pair of second frame members disposed to face each other in a second direction intersecting the first direction;
a first lattice frame arranged inside the frame portion, extending from one of the first ribs to the other of the first ribs, and arranged along the second direction; and
a second lattice frame arranged inside the frame portion, extending from one of the second ribs to the other of the second ribs, and arranged along the first direction,
the second lattice frame is composed of a first portion extending from one of the second frames to a predetermined position in the second direction, and a second portion extending from the predetermined position to the other of the second frames,
the second lattice skeleton is formed such that a sectional area of the first portion is larger than a sectional area of the second portion.
2. A lattice substrate is provided with:
a frame portion having a pair of first frame members disposed to face each other in a first direction and a pair of second frame members disposed to face each other in a second direction intersecting the first direction;
a first lattice frame arranged inside the frame portion, extending from one of the first ribs to the other of the first ribs, and arranged along the second direction; and
a second lattice frame arranged inside the frame portion, extending from one of the second ribs to the other of the second ribs, and arranged along the first direction,
the second lattice frame is composed of a first portion extending from one of the second frames to a predetermined position in the second direction, and a second portion extending from the predetermined position to the other of the second frames,
the second lattice skeleton is formed such that an average sectional area of the first portion is larger than an average sectional area of the second portion.
3. The lattice body substrate according to claim 2,
in the second lattice skeleton, a thickest portion having a largest cross-sectional area is formed in the first portion.
4. The lattice body substrate according to any one of claims 1 to 3, wherein,
the first portion of the second lattice skeleton is formed as: the cross-sectional area is gradually increased from the predetermined position toward one of the second frame members.
5. The lattice body substrate according to any one of claims 1 to 4, wherein,
a pair of protruding portions that are provided so as to protrude outward of the frame portion in a direction in which the first lattice frame extends and that are provided so as to oppose each other in the direction in which the first lattice frame extends are formed in the first lattice frame.
6. The lattice body substrate according to claim 5, wherein,
the predetermined position is located in a region between the pair of projections.
7. The lattice body substrate according to any one of claims 1 to 6, wherein,
the predetermined position is located at an intersection with the first lattice skeleton.
8. The lattice body substrate according to claim 7, wherein,
the predetermined position is located at an intersection of the first lattice frame adjacent to one of the second frames.
9. An electrode, comprising:
a lattice body formed from the lattice body substrate of any one of claims 1 to 8; and
an electrode material retained in the lattice body.
10. A lead-acid battery is provided with:
a positive electrode having a lattice body formed from the lattice body substrate of any one of claims 1 to 8 and a positive electrode material retained in the lattice body;
a negative electrode having the lattice body and a negative electrode material, the negative electrode material being held in the lattice body; and
and a separator disposed between the positive electrode and the negative electrode.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2019019027 | 2019-02-05 | ||
| JP2019-019027 | 2019-02-05 | ||
| PCT/JP2020/001757 WO2020162152A1 (en) | 2019-02-05 | 2020-01-20 | Lattice base material, electrode, and lead storage battery |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN113366675A true CN113366675A (en) | 2021-09-07 |
Family
ID=71947420
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202080012105.2A Pending CN113366675A (en) | 2019-02-05 | 2020-01-20 | Grid base material, electrode and lead storage battery |
Country Status (4)
| Country | Link |
|---|---|
| JP (1) | JPWO2020162152A1 (en) |
| CN (1) | CN113366675A (en) |
| TW (1) | TW202040857A (en) |
| WO (1) | WO2020162152A1 (en) |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5882775U (en) * | 1981-11-30 | 1983-06-04 | 古河電池株式会社 | lead acid battery |
| JPS58216361A (en) * | 1982-06-10 | 1983-12-16 | Matsushita Electric Ind Co Ltd | Plate grid for lead storage battery |
| JPS5958757A (en) * | 1982-09-28 | 1984-04-04 | Furukawa Electric Co Ltd:The | Complex grid base plate for storage battery |
| CN103406521A (en) * | 2013-09-02 | 2013-11-27 | 漳州市华威电源科技有限公司 | Lead acid battery grid and processing mold thereof |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US9761883B2 (en) * | 2011-11-03 | 2017-09-12 | Johnson Controls Technology Company | Battery grid with varied corrosion resistance |
| JP2017069123A (en) * | 2015-10-01 | 2017-04-06 | 日立化成株式会社 | Punched lattice for lead acid battery, positive electrode for lead acid battery, and lead acid battery using the same |
-
2020
- 2020-01-20 WO PCT/JP2020/001757 patent/WO2020162152A1/en active Application Filing
- 2020-01-20 CN CN202080012105.2A patent/CN113366675A/en active Pending
- 2020-01-20 JP JP2020571073A patent/JPWO2020162152A1/en active Pending
- 2020-01-30 TW TW109102709A patent/TW202040857A/en unknown
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5882775U (en) * | 1981-11-30 | 1983-06-04 | 古河電池株式会社 | lead acid battery |
| JPS58216361A (en) * | 1982-06-10 | 1983-12-16 | Matsushita Electric Ind Co Ltd | Plate grid for lead storage battery |
| JPS5958757A (en) * | 1982-09-28 | 1984-04-04 | Furukawa Electric Co Ltd:The | Complex grid base plate for storage battery |
| CN103406521A (en) * | 2013-09-02 | 2013-11-27 | 漳州市华威电源科技有限公司 | Lead acid battery grid and processing mold thereof |
Also Published As
| Publication number | Publication date |
|---|---|
| TW202040857A (en) | 2020-11-01 |
| JPWO2020162152A1 (en) | 2021-12-09 |
| WO2020162152A1 (en) | 2020-08-13 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CA2679909C (en) | Negative grid for battery | |
| JP4892651B1 (en) | Lead acid battery | |
| CN107026271B (en) | Positive electrode plate for lead storage battery, and method for manufacturing positive electrode plate for lead storage battery | |
| EP3553872A1 (en) | Lead storage battery and method for manufacturing same | |
| US11600813B2 (en) | Method and installation for producing an electrode plate, an electrode plate and a rechargeable electrochemical battery | |
| US5993494A (en) | Method of manufacturing modular components for a bipolar battery and the resulting bipolar battery | |
| US20190393512A1 (en) | Battery grid | |
| CN113366675A (en) | Grid base material, electrode and lead storage battery | |
| EP3203572A1 (en) | Positive electrode plate for lead-acid battery, lead-acid battery and method of manufacturing positive electrode plate for lead-acid battery | |
| US20100215837A1 (en) | Process for making an electrode, an electrode and a battery comprising the electrode | |
| JP2739645B2 (en) | How to package a battery | |
| US20140004401A1 (en) | Lead acid battery plate | |
| EP3145006B1 (en) | Battery grid and method of making | |
| JP5387667B2 (en) | Lead acid battery | |
| TWI413288B (en) | Lead battery | |
| JP7338140B2 (en) | Current collector for lead-acid battery, lead-acid battery, and method for manufacturing lead-acid battery current collector | |
| JP2014197456A (en) | Method of positive electrode grid body for lead-acid storage battery and lead-acid storage battery | |
| JP7478877B1 (en) | Flooded lead-acid battery | |
| US20110283499A1 (en) | Method of, and apparatus for, producing composite articles | |
| JPH07326359A (en) | Electrode plate for lead-acid battery | |
| WO2020003729A1 (en) | Grid body, lead-acid battery, and manufacturing method for lead-acid battery | |
| EP1830429A1 (en) | lead acid accumulator | |
| JP2019102364A (en) | Lead storage battery | |
| JPH0527963U (en) | Sealed lead battery plates |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination |