EP2304826A1 - Rohrplatte für eine blei-säure-batterie - Google Patents
Rohrplatte für eine blei-säure-batterieInfo
- Publication number
- EP2304826A1 EP2304826A1 EP09780574A EP09780574A EP2304826A1 EP 2304826 A1 EP2304826 A1 EP 2304826A1 EP 09780574 A EP09780574 A EP 09780574A EP 09780574 A EP09780574 A EP 09780574A EP 2304826 A1 EP2304826 A1 EP 2304826A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- convex
- surface profile
- tube
- plate according
- sections
- 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.)
- Withdrawn
Links
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
- H01M4/14—Electrodes for lead-acid accumulators
- H01M4/16—Processes of manufacture
- H01M4/20—Processes of manufacture of pasted electrodes
-
- 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
-
- 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
- H01M4/75—Wires, rods or strips
-
- 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
- H01M4/76—Containers for holding the active material, e.g. tubes, capsules
- H01M4/765—Tubular type or pencil type electrodes; tubular or multitubular sheaths or covers of insulating material for said tubular-type electrodes
- H01M4/767—Multitubular sheaths or covers
-
- 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
- H01M4/66—Selection of materials
- H01M4/668—Composites of electroconductive material and synthetic resins
-
- 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
Definitions
- the present invention relates to a tube plate for an electrode, preferably a positive electrode, of a lead-acid battery, the tube plate having an upper frame and a plurality of lead or lead alloy soils extending substantially parallel from the upper frame.
- the electrodes used in lead-acid batteries are mainly grid plates and tube plates.
- Grid plates can be used both as negative and as positive electrode plates, whereas tube plates are used only as positive electrode plates.
- Tube plates consist of a plurality of substantially parallel juxtaposed and equidistantly arranged souls, which are all attached to a bridging portion, the so-called upper frame, and extending therefrom.
- the upper frame has a protruding therefrom flag, which are connected in a lead-acid battery, the Gleichpolpolten electrode plates together.
- the tube plate, consisting of upper frame, thread and souls, is made of lead or lead alloy, preferably a lead-tin-calcium alloy or a lead-antimony alloy.
- the entire electrode plate further comprises a so-called tube pocket with a number of tubes corresponding to the number of tubes arranged side by side with a substantially circular cross-section and a length which is greater than the length of the souls.
- the tube pocket made of a textile material, preferably a textile fabric or non-woven.
- the souls are introduced into the tubes of the tube pocket.
- the souls usually have spacers (wings), which differs from extend the souls vertically in multiple directions toward the inner walls of the tubes of the tube pocket.
- the cavity in the tube pocket between the core and the inner wall of the tube is filled with active material, usually a paste of lead oxide, sulfuric acid and water.
- active material usually a paste of lead oxide, sulfuric acid and water.
- lead oxide instead of lead oxide also lead dust or Mennige was used.
- the openings of the tubes opposite the upper frame are often closed with a closing strip.
- the souls of the tube plates for lead-acid batteries of the prior art usually have a circular cross-section, whereby the soul, based on the cross-sectional area or the material use, the smallest possible circumference and thus the lowest possible surface of the soul.
- This circular cross-sectional shape of the souls has been used for decades.
- the profile of the core is easy to manufacture and easy to handle in die casting with split molds. Other profiles, such as oval cross sections of souls and tube pockets have not prevailed.
- the object of the present invention was therefore to provide a tube plate for an electrode of a lead-acid battery, with which the aforementioned disadvantages of the prior art are improved and with a reduction of the current density and shorter current paths or diffusion paths for reduction the electrical resistance compared to tube plates according to the prior art can be achieved with the same material use.
- a tube plate of the aforementioned type which is characterized in that the cores in cross section to its longitudinal extent has a surface profile with at least three convex portions and at least three concave sections, wherein convex and concave sections in the course of the surface profuse alternate.
- the cross-sectional profile of the souls of the tube plate according to the invention deviates from the circular shape and therefore has a larger circumference compared to a soul with a circular cross-section and the same cross-sectional area or material use.
- a larger scale means that the soul has a larger surface over its length, which in turn leads to a reduction in the current density and to increase the positive mass utilization in the use of the battery.
- a larger surface of the soul provides a larger contact area between the active material and the surface of the soul, which advantageously results in a lower electrical contact resistance.
- the invention Due to the inventive design of the cross-sectional profile of the souls a larger circumference and thus an advantageous for the current density larger surface of the souls is achieved over a circular cross-sectional profile with the same cross-sectional area or the same material. As a result, a better positive mass utilization can be achieved.
- the invention has the advantage that compared to a soul with circular cross-sectional profile with the same surface or same mass utilization requires a smaller cross-sectional area and thus a lower material usage, thereby saving considerable raw material costs can be.
- convex sections of the surface profile in the cross-section of the cores mean that the curvature of the surface points outward from the interior of the core.
- concave sections of the surface profile mean that the surface of the core is arched in such a section towards the interior of the core, in other words that the centers of the radii of curvature of these sections are generally outside the core material.
- the definition of the present invention that the cores in cross-section to their longitudinal extent has a surface profile with at least three convex portions and at least three concave portions does not necessarily mean that the surface profile consists exclusively of alternating convex or concave sections.
- the present invention also includes that straight portions are provided between convex and concave portions in the course of the surface profile. In other words, between a convex portion and a concave portion, the surface profile may take a straight course, i. neither convex nor concave.
- straight sections may be provided within individual convex or concave sections in the course of the surface profile.
- a convex portion merges into a straight portion and then again into a convex portion, or a concave portion merges into a straight portion and then again into a concave portion.
- the surface profile has at least three convex portions and at least three concave portions, with convex and concave portions alternating in the course of the surface profile.
- a plurality of different convex portions for example of different radii of curvature, when they follow each other directly or have straight portions between them, but have no concave portion therebetween, are considered as a single convex portion in the sense of the present invention. The same applies vice versa for concave sections.
- the surface profile of the cores has 3 to 8 convex and 3 to 8 concave sections.
- the surface profile preferably has 3 to 5 convex and 3 to 5 concave sections, and most preferably the surface profile has four convex and four concave sections which alternate in the course of the surface profile.
- the core has a substantially "cross-shaped" surface profile in cross-section to its longitudinal extent.
- all convex portions in the course of the surface profile on the same radius or the same radius profile and / or all concave portions have in the course of the surface profile on the same radius or the same radius curve.
- a convex or concave portion may have exactly one radius of curvature before the surface profile is formed into a straight or oppositely curved portion, i. from convex to concave or vice versa, passes over.
- a convex or concave portion may also have several different radii within a portion, i. that the radius of curvature changes in the course of a convex or concave portion without the direction of curvature changing from convex to concave or vice versa.
- the radius or radius profile of the convex sections need not be the same as that of the concave sections Sections, the surface profile of the souls in cross section is rotationally symmetric about the longitudinal axis of the soul around.
- all the convex portions have exactly one radius in the course of the surface profile and / or all the concave portions have exactly one radius in the course of the surface profile. This means that within a convex or concave section no change in the radius of curvature takes place until this section merges into a straight or opposite curved section.
- all the convex portions in the course of the surface profile on the same radius or the same radius profile and all concave portions in the course of the surface profile on the same radius or the same radius profile, and the convex portions and concave portions are respectively in itself mirror-symmetrical. If a convex or concave portion has exactly one radius of curvature and has no straight portions within the convex or concave portion, it is necessarily mirror-symmetrical. A radius curve with curvature changing within a section, i.
- a plurality of alternating radii in a section is then mirror-symmetrical in itself, if the sequence of existing within the entire section radii of curvature and the length of the subsections with such radii are symmetrical. Examples would be sections with the following radii arrangement: R1 -R2-R1, R1-R2-R3-R2-R1, R1-R2-straight section-R2-R1 etc.
- the radii of the convex and concave portion of the surface profile of the cores lie in the range from 0.1 to 1.5 mm, preferably from 0.2 to 1.1 mm, more preferably from 0.3 to 0.9 mm, more preferably from 0.4 to 0.8 mm.
- the substantially parallel arranged cores are attached to the upper frame of the tube plate or go into this, since they are usually made of the same material in one piece with each other.
- the transitions from the top frame to the cores are each formed by sections which initially extend cylindrically from the top frame and taper conically towards the cores.
- the souls are inserted into parallel, juxtaposed tubes of a tubular bag having a substantially circular cross-section for the completion of the electrode plate. Subsequently, the active mass is filled between the souls and the inner wall of the tubes of the tube pocket.
- the tubes of the tube pocket have a diameter which substantially corresponds to the diameter of the cylindrically extending sections from the upper frame, so that the tubes of the tube pocket can be brought into frictional engagement with the cylindrical sections. This way will ensures that the tube pocket is in a relatively tight fit in conjunction with the tube plate.
- the tube pocket is expediently made of a textile material, preferably made of textile fabric, but this is known from the prior art for conventional tube plates.
- the present invention also includes a lead-acid battery having tube plates of the type described herein.
- the advantages of the present invention lie in an increase in the surface of the cores coming into contact with the active composition, whereby a reduction in the current density at the core and an increase in the positive mass utilization is achieved.
- the surface is increased by about 20% over a circular surface profile.
- the surface profile according to the present invention in comparison to a soul with a circular surface profile and the same cross-sectional area of the average current path or
- the average diffusion path means the average of the shortest distances from each point of the surface of the soul through the active mass to the inner wall of the tube surrounding the tube tube.
- the shortest distance from each point of the surface of the soul to the inside wall of the tube is always constant and equal to the radius of the tube minus the radius of the cross section of the soul.
- the cross section of the core is characterized by convex and concave portions such that the shortest distance from a point on the surface of the core to the inner wall of the tube is not always necessarily radial from the central axis of the tube or the core ,
- the cross-sectional profile of a core according to the present invention there are diffusion paths from the surface of the core which are shorter and those which are longer than the diffusion paths of a core having a circular cross-section and the same cross-sectional area. Based on the entire circumference of the soul, the diffusion paths in the surface profile according to the invention are on average shorter than the diffusion paths a circular surface profile of the same cross-sectional area.
- the shape of the cores according to the invention in no way adversely affects the processes used, such as the casting of the tube plates, the filling with active material and the formation.
- Figure 1 shows the surface profile of a soul according to the invention in cross section to its longitudinal extent and a cross section of the associated tube of a tube pocket.
- Figure 2 shows the same view as in Figure 1 and in addition the surface profile of a circular cross-section soul with the same cross-sectional area.
- FIG. 3 shows the same representation as FIG. 1 and in addition the surface profile of a cross-sectionally circular core with a larger cross-sectional area than the core according to the invention, but the circular core has the same circumference as the illustrated core according to the invention.
- FIG. 4 essentially shows the illustration according to FIG. 2 with the surface profile of the core according to the invention and a core with a circular cross section with the same cross-sectional area and additionally the deviations of the diffusion paths between the inventive and the circular core.
- FIGS. 5 and 6 show four further embodiments of surface profiles of inventive cores.
- Figure 7 shows a positive tube plate with upper frame, the cylindrical and conical sections, the flag, the souls with spacers, the tube pockets and the end strip.
- Figures 1 to 4 show a soul according to the invention 1 in cross section to its longitudinal extent with a surface profile with four convex portions 10 and four concave portions 1 1, wherein the convex and concave portions 10 and 1 1 in this embodiment, equal radii of 0.61 mm and the cross-sectional profile is therefore substantially cross-shaped and symmetrical. Furthermore, the inner wall 13 of a tube of a tube pocket, in which the soul extends, is shown schematically. In FIGS. 2 and 4, the surface profile of a core with a circular cross-section and the same cross-sectional area as the core according to the invention is furthermore shown in dashed lines. The radius of the circular core 12 is 1.5 mm, and the cross-sectional area of the circular core and the core according to the invention is 7.1 mm 2 here .
- the circular soul shown in dashed lines in Figure 3 has a radius of 1, 83 mm, a circumference of 1 1, 5 mm and a cross-sectional area of 10.5 mm 2 .
- this means that the star-shaped embodiment according to the invention with the same circumference has a correspondingly smaller cross-sectional area and thus requires significantly less material with the same circumference and thus means a considerable saving in material costs.
- a considerably larger clearance between the surface of the soul and the inside of the tube is achieved, which can be filled with additional active mass and thus causes an increase in capacity.
- FIG. 4 also shows checkered regions 14 outside the schematically illustrated inner wall of the tube 13 and regions 15 within the inner wall of the tube 13.
- the inner diameter of the tube 14 is 8.4 mm, ie has a radius of 4.2 mm.
- the regions 14 and 15 shown in FIG. 4 or their outer boundary is a projection of the diffusion path of the core 12 with a circular cross-section of 2.7 mm onto the top surface of the core 12. It should be noted that the radius was not always placed radially from the center to the outside, but in the direction in which from a certain surface point of the soul according to the invention out of the way to the Inner wall of the tube 13 is the shortest.
- the radii of the core with a circular cross-section extend when applied to the surface of the core according to the invention, predominantly beyond the inner wall of the tube 13, which is represented by the checkered regions 14.
- the circumference of the surface profile of the circular-sectioned core according to the prior art is 9.4 mm, whereas the circumference of the surface profile of the illustrated core 11 according to the invention is 5 mm.
- the ratio of the circumference of the inventive core to the circumference of the circular core is 122%, which also corresponds to the ratio of the respective surfaces.
- the larger surface of the soul according to the invention results in a 20% lower current density at the surface and thus increased mass utilization.
- the projection from FIG. 4 shows that, due to the surface profile according to the invention with respect to a surface profile having a circular cross section with the same cross sectional area and thus the same material consumption, a significantly lower average diffusion path or current path from the surface of the soul through the active mass to the tube of the tube pocket is reached. As a result, the resistance is lower by the active mass and the voltage loss is lowered.
- FIG. 5 shows two variants of the surface profile of the core according to FIGS. 1 to 4, likewise with four convex and four concave sections, wherein the convex sections and the concave sections each have identical radii, but convex sections have other radii than concave sections.
- the convex sections and the concave sections each have identical radii, but convex sections have other radii than concave sections.
- FIG. 6 shows two further embodiments of inventive cores, wherein the core in FIG. 6 has six convex sections with a radius of 0.25 mm and six concave sections with a radius of 0.5 mm, a cross-sectional area of 7.9 mm 2 and has a circumference of the surface profile of 12.6 mm.
Landscapes
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Cell Electrode Carriers And Collectors (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102008034587A DE102008034587A1 (de) | 2008-07-25 | 2008-07-25 | Rohrplatte für eine Blei -Säure-Batterie |
PCT/EP2009/058999 WO2010010008A1 (de) | 2008-07-25 | 2009-07-14 | Rohrplatte für eine blei-säure-batterie |
Publications (1)
Publication Number | Publication Date |
---|---|
EP2304826A1 true EP2304826A1 (de) | 2011-04-06 |
Family
ID=41204260
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP09780574A Withdrawn EP2304826A1 (de) | 2008-07-25 | 2009-07-14 | Rohrplatte für eine blei-säure-batterie |
Country Status (4)
Country | Link |
---|---|
US (1) | US20110165448A1 (de) |
EP (1) | EP2304826A1 (de) |
DE (1) | DE102008034587A1 (de) |
WO (1) | WO2010010008A1 (de) |
Families Citing this family (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN101984515B (zh) * | 2010-05-28 | 2013-01-02 | 江苏赛尔电池有限公司 | 一种低容量二次电池的卷绕模具及组装方法 |
PL2887428T3 (pl) | 2013-12-20 | 2017-06-30 | Hoppecke Batterien Gmbh & Co. Kg | Akumulator, zwłaszcza akumulator trakcyjny |
US20170222214A1 (en) * | 2016-02-02 | 2017-08-03 | Gs Yuasa International, Ltd. | Positive electrode plate for lead-acid battery, lead-acid battery and method of manufacturing positive electrode plate for lead-acid battery |
JP7098874B2 (ja) * | 2016-02-02 | 2022-07-12 | 株式会社Gsユアサ | 鉛蓄電池、鉛蓄電池用の正極板の製造方法 |
Family Cites Families (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US865503A (en) * | 1906-12-26 | 1907-09-10 | John Knobloch | Electrical accumulator. |
US1584747A (en) * | 1922-06-28 | 1926-05-18 | Thomas K Lewis | Storage-battery element |
NL113136C (de) * | 1958-11-17 | |||
GB1009059A (en) * | 1961-05-30 | 1965-11-03 | Varta Ag | Galvanic cell |
GB1052705A (de) * | 1963-02-15 | |||
JPS595564A (ja) * | 1982-07-01 | 1984-01-12 | Yuasa Battery Co Ltd | 蓄電池 |
-
2008
- 2008-07-25 DE DE102008034587A patent/DE102008034587A1/de not_active Ceased
-
2009
- 2009-07-14 WO PCT/EP2009/058999 patent/WO2010010008A1/de active Application Filing
- 2009-07-14 EP EP09780574A patent/EP2304826A1/de not_active Withdrawn
- 2009-07-14 US US12/997,917 patent/US20110165448A1/en not_active Abandoned
Non-Patent Citations (1)
Title |
---|
See references of WO2010010008A1 * |
Also Published As
Publication number | Publication date |
---|---|
WO2010010008A1 (de) | 2010-01-28 |
DE102008034587A1 (de) | 2010-01-28 |
US20110165448A1 (en) | 2011-07-07 |
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