JPH082921Y2 - Substrate for storage battery electrode - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial field of application] The present invention relates to a storage battery electrode substrate applied to an inner ear type or outer ear type lead alloy cast substrate such as lead-calcium.

[Conventional technology]

Conventionally, as the inner ear type or outer ear type lead acid battery electrode substrate,
(A) In order to improve the current collecting effect in a board in which a large number of parallel horizontal bars and a large number of parallel vertical bars are arranged in a rectangular enclosure, in addition to these bars, ears are added. There is a substrate of a type in which a plurality of radial bars are arranged around Further, as a substrate lighter than such a substrate, there is a substrate of a type in which (b) a plurality of parallel horizontal rails and a large number of radial rails are arranged around the ears in a rectangular enclosure.

[Problems to be solved by the device]

The conventional substrate described in the above (a) is uneconomical because it is extremely heavy and consumes a large amount of lead. The substrate described in (b) is advantageous in that it is lighter than the substrate of the type described in (a), but as shown in FIG.
When the number of the crosspieces A, A is relatively small, the radial crosspieces A, A
Since the space between A, ... becomes wider as it gets farther from the ear B, the space between the radial bars A, A ,. , The area of a large number of active material filling holes D, D, ... Formed by the cross rails C, C, ... that intersect with these is too large, and the active material filled in these holes easily falls off. It has the drawback of providing life.

In order to improve this point, it is conceivable to significantly increase the number of the radial crosspieces and reduce the space distance on the side far from the ears, but the disadvantages that lead consumption and weight of the substrate increase accordingly. Accompany.

Therefore, without increasing the lead consumption and the weight of the substrate so much, the space between the radial bars is made small in the entire substrate, and the size of the filling hole of the active material is made substantially uniform over the entire substrate. It is desirable if possible. As one of the proposals, as shown in the sixth illustration, the radial bars A, A,
... is relatively small, and the respective spaces between the radial crosspieces A, A, ... are too wide in the surface area on the side farther from the ear B, so that there are a large number of parallel crosspieces C, C ,. A large number of active material filling holes D, D, ..., which are configured to be too large, are divided into these radial bars A, A ,. It is conceivable to dispose the branch bars E, E, ....

However, by arranging such branch bars E, E, ...
As a new problem, since the radial cross-section A and the branch start cross-section F of the branch cross-section E are too close to each other, heat is likely to be concentrated near the branch point G in the casting to cause hot cracking. A,
A new problem arises in that the active material filling hole D in the tapered space portion formed between the portions E tends to be too small.

[Means for solving the problem]

The present invention solves the above-mentioned inconveniences and provides a lead-acid battery electrode substrate that is relatively lightweight and prevents the active material from falling off. And a plurality of radial bars that extend radially around the ears that intersect with this and that are provided in the surrounding frame, in at least the radial bars of the plurality of radial bars of the formula. A branch bar that branches from the middle of the radial bar and divides the space between the adjacent radial bars is provided in each of the most radial bars, and a branch start bar that starts the branch is provided on the base bar of the radial bar. On the other hand, it is formed at the bending start end bar portion which is bent at a large angle to the side and then bent in the radial direction.

[Action]

Since the branch bar branching from the radial bar is formed in the branch bar having the bending start end bar, the space formed between the radial bar and the branch start end bar of the branch bar branched from this is wide. Therefore, a relatively large active material filling hole is formed between these and the cross rail crossing each other, and in the casting, hot cracking due to heat concentration due to an increase in the amount of lead at the branch point can be avoided. In this case, by arranging the branch point between the cross rails, heat concentration can be similarly prevented and hot cracking can be prevented. Further, by forming a branch bar that divides the space between the adjacent radial bars into substantially equal parts, it is possible to form a large number of active material filling holes of an appropriate size, which are subdivided substantially evenly, It is possible to obtain an electrode filled with an appropriate amount without dropping off the active material. Further, when the positions of the branch points of the adjacent radial crosspieces and the branch crosspieces are shifted, the respective radial crosspieces can be favorably provided on the adjacent radial crosspieces and the active material can be provided. Provides uniform size subdivision of the fill holes. Further, by providing a plurality of branch bars from one radial bar, a relatively lightweight radial bar provides a lightweight substrate. Further, by arranging these branch points in an arc shape having an approximately equal distance from the ear, the current collecting effect is improved.

Further, when the radial crosspiece is formed into a bent crosspiece in which a portion of the branch crosspiece which is to be branched from the bending start end is symmetrically bent, the space for filling the active material between the bending start ends is increased. In addition, it is possible to prevent hot cracking better.

〔Example〕

Next, an embodiment of the present invention will be described with reference to the accompanying drawings.

FIG. 1 shows a lead-cast storage battery electrode substrate made of a lead-calcium alloy or the like according to one embodiment of the present invention. The substrate is provided with a rectangular enclosure 1, a large number of parallel horizontal rails 2, 2, ... Arranged at regular intervals inside the rectangular enclosure 1, and an upper frame 1a of the rectangular enclosure 1 protruding from the inside thereof. Radially centered around the ear 3 on both sides 1
It has a basic structure consisting of b, 1b and a large number of radial bars 4, 4, ... Which extend to the lower frame 1c and have a relatively small number. On this board, these radial bars 4, 4, ...
A large number of active material filling holes formed by crossing 2,2, ...
If you reduce the number of radial bars, the radial bars 4, 4, ...
Except the base crosspieces 4a, 4a, ... side, the space between them becomes too large, and therefore the active material filling hole becomes too large, and the filled active material tends to fall off, which is not preferable.

The present invention aims to solve the above-mentioned inconvenience as a relatively lightweight substrate, and the substrate is configured as follows.
That is, according to the present invention, in the above basic constituent substrate,
Further, most of these radial crosspieces 4, 4, ..., Except for the two short radial crosspieces at both ends in the illustrated example,
It is characterized in that most of the radial crosspieces 4, 4, ... Are provided in each of them with a branching crosspiece 5 branching from the middle thereof and dividing the space between the adjacent radial crosspieces 4, 4 as follows. . That is, after the branch start end portion 5a for starting the branch is temporarily extended laterally at a large angle with respect to the base rail portion 4a of the radial rail 4,
The space between the adjacent radial bars 4, 4 is subdivided by the sub-partitioning main bar part 5b of the branch bar which is formed in the bending start end bar part 5a which is bent in the radial direction and which extends in the radial direction. ,
Generally, it is preferable to divide into two substantially equal parts, whereby the branch main crosspiece 5b and the radial crosspieces 4, 4 and the horizontal crosspieces 2, 2, ... The active material-filled holes 6, 6, ... Which have almost the same size and do not fall off are formed so as to be partitioned. Thus, the base cross section with the radial cross sections 4, 4, ... Close to the ear 3 side
A large number of active material filling holes 6, 6 having a predetermined size, which are defined by the crosspieces 4a, 4a, ... And the horizontal crosspieces 2, 2 ,. The active material filling holes having substantially the same size and the same appropriate size can be formed in the entire area, and the active material filling substrate is formed so that the active material does not fall out as a whole substrate and is light in weight.

The radial bar 4 and the branch point 7 of the branch bar 2 are the radial bar 4
Avoid the intersection between the horizontal rail 2 and the horizontal rail 2 as shown in the figure.
It is preferable to provide it in the middle of the cross-section of the radial cross-piece 4 connecting between 2 and 2. This makes it possible to prevent hot cracking due to increased concentration of the amount of molten lead due to a branch point further overlapping the intersection.

More specifically, the angle of the lateral short bar portion 8 of the bent start end bar portion 5a extending laterally at a relatively large angle from the radial bar 4 relative to the radial bar 4 is a relatively large angle of about 30 ° to 90 °.
The range of ° is preferable so that there is no problem of hot cracking due to heat concentration in the vicinity of the branch point 7, and the radial crosspiece 4
It is possible to form a relatively large active material filling hole 6 between the and the bending start end bar portion 5a of the branch bar 5.

The length of the side short rail portion 8 of the bending start end rail portion 5a, that is, the branch point 7
The distance between the eccentric portion 9 that changes to the radial direction and the radial cross section 4,
Usually, the space between the radial crosspieces 4 and 4 is divided into two equal parts in the subdivision main crosspiece 5b which is usually provided corresponding to approximately half of the space between the crosspieces 4 and thus extends from the bending portion 9. In general, the lower frame 1c or the side frames 1b, 1b are reached.

FIG. 2 shows a modification formed by branching a plurality of branch bars 5, 5 from one radial bar 4 among the branch bars 5, 5, ... Branched from a large number of radial bars 4, 4 ,. Here is an example: in this case,
The branch points 7 and 7 respectively indicate the cases where the radial crosspieces 4 are branched from different points as shown in the figure.

As shown in FIG. 1 and FIG. 2, the bending start end rail portions 5a and 5a of the branch rails 5 and 5 branching from the adjacent radial rails 4 and 4, respectively, are arranged so that the radial rails 5a and 5a are displaced from each other. It is possible to uniformly, smoothly and satisfactorily subdivide the predetermined area by the branch bars 5, 5 of the space between the spaces 4, 4.

FIG. 3 shows a radial crosspiece having a relatively small number as in the above.
Of the 4,4, ..., most of the radial crosspieces 4,4, ... shall be bent at their intermediate portions, and the main crosspieces 5b, 5b ,.
An example is shown in which the spaces between and the branching rails 5, 5, ... Are arranged at appropriate equal intervals. More specifically, the bent starting end rail portions 5a, 5 of the branch points 7, 7, ... Branching from the intermediate portion of the radial rails 4, 4 ,.
The portions of the radial crosspieces 4, 4, ... That face a are formed into bent crosspieces that are symmetrically bent. That is, the radial crosspiece 4,
, 4 extend symmetrically with the branch bars 5, 5, ... branching from the middle thereof, that is, symmetrically on the side opposite to the bending start end bar portion 5a of the branch bar 5, and extend again in the radial direction. Angled bent cross section 4c
And the radial crosspiece 4b from the variable angle to the tip extends at the same radiation angle as the base crosspiece 4a before bending, and the subdivision main crosspiece 5a of the branch crosspiece 5 also has the same radiation angle. I decided to extend it. Thus, in the middle of each radial crosspiece 4, the bending start end crosspiece 5a and the bending crosspiece 4c are evenly bifurcated into left and right halves to further effectively prevent hot cracking due to heat concentration and to fill the active material therebetween In order to bring about the increase of the holes, the branch lines 4b and 5b which extend in parallel with each other are then also formed, and these branch beams form a predetermined area suitable for the active material filling in the surface area far from the ear of the substrate. I tried to get a subdivision of the space. Furthermore, in the embodiment of FIG.
By arranging these branch points 7, 7, ... In a substantially arc shape on the ear 3 side, the current collecting effect was improved.

FIG. 4 shows another embodiment, in which the number of radiating bars 4, 4, ... Is further reduced and the weight is reduced as compared with the previous embodiment, and one or all of the radial bars 4, 4 ,. Multiple branch bars 5,5, ...
At a certain place, the space between the radial crosspieces 4 and 4 which are branched is divided into three substantially equal parts by two branch crosspieces 5 and 5, and a large number of parallel crosspieces 2 and 2, ... , The active material filling holes 6, 6, ... Of a proper size are formed so as not to fall off the active material as a whole, thereby forming a substrate of the present invention.
When a plurality of branch lines 5 are branched from one radial bar 4, the branch lines are branched from one common point or from different positions as shown in the figure, thereby uniformly dividing the space between the radial bars. Was measured as much as possible.

The present invention is not limited to the inner ear type substrate, and it goes without saying that it can be applied to the outer ear type substrate.

[Effects of the Invention] As described above, according to the present invention, a large number of parallel horizontal bars are arranged in the rectangular peripheral frame and a large number of radial bars are arranged so as to concentrate on the ears provided on the peripheral frame. In the storage battery electrode substrate formed by crossing, a branch bar is provided which branches from the middle of these radial bars and redivides the space between the radial bars, and the branch bars start branching from the radial bars. Since the branch start bar is formed as a bent branch start bar that extends laterally at a relatively large angle with respect to the radial bar and bends again in the radial direction, hot cracking does not occur near the branch point without heat concentration. It is possible to smoothly and satisfactorily perform casting, and a relatively large active material filling hole is formed between the radial crosspiece and the bending branch start crosspiece of the branch crosspiece, and the space between the radial crosspieces is branched. Since it can be subdivided by crosspieces, the number of radial crosspieces In comparison with the above, a lightweight substrate can be obtained, and a favorable lattice substrate in which the active material is not dropped as a whole substrate can be produced inexpensively by reducing the consumption of lead. Further, in this case, when the branch points are provided between the adjacent horizontal rails, the positions of the branch points of the adjacent branch rails that smoothly bring about a cast substrate free from hot cracking should be displaced from each other. This makes it easy to evenly divide the space between the radial crosspieces. Further, by arranging these branch points in an arc shape, the current collecting effect on the ear side can be improved. Furthermore,
When the radial crosspiece itself is bent from the branching point of the branching crosspiece to form a plate-like crosspiece having a bending start crosspiece, hot cracking at the time of casting near the branch point can be prevented even better. In the meantime, a wider active material filling hole can be formed.

[Brief description of drawings]

FIG. 1 is a front view of a substrate according to an embodiment of the present invention, FIGS. 2 to 4 are front views of other embodiments, FIG. 5 is a front view of a conventional substrate, and FIG. The front view of a proposal example is shown. 1 ... Square peripheral frame, 1a ... Top frame, 1b ... Side frame 1c ... Bottom frame, 2 ... Side rail, 3 ... Ear 4, Radial rail, 4a ... Base rail section 4b ... Front Crosspieces, plate-like crosspieces 4c: bending start end crosspieces 5: branching crosspieces 5a: bending start end crosspieces, 5b: subdivision main crosspieces 6: active material filling hole, 7: branch point 8 ... Short cross section, 9 ... Variable section

Claims (7)

[Scope of utility model registration request] 1. A large number of parallel horizontal rails in a rectangular frame,
In a lead-acid battery grid substrate of the type in which a large number of radial bars that extend radially around the ears that intersect with this and are provided in the surrounding frame are provided as a center, at least most of the plurality of radial bars are provided. Each of the radial crosspieces is provided with a branch crosspiece that branches from the middle of the radial crosspiece and divides the space between the adjacent radial crosspieces, and the branch start crosspiece for starting the branch is larger than the base crosspiece of the radial crosspiece. A storage battery electrode substrate that is formed at a bending start end bar portion that is extended laterally at an angle and then bent in the radial direction. 2. The storage battery electrode substrate according to claim 1, wherein the radial rail and the branch portion of the branch rail are located between adjacent horizontal rails. 3. The storage battery electrode substrate according to claim 1, wherein the branch bars are formed by dividing a space between adjacent radial bars into substantially equal parts. 4. The lead storage battery electrode grid substrate according to claim 1, wherein at least one branch bar is provided on each of the adjacent radial bars, and the position of the branch point of each branch bar is set. A storage battery electrode substrate that is arranged so as to be offset from each other. 5. The storage battery electrode substrate according to claim 1, wherein a plurality of branch bars are arranged so as to branch from one radial bar at the same or different branch points. 6. The storage battery electrode substrate according to claim 1, wherein each branch point of each of the branch bars provided with each of the plurality of radial bars is arranged in a substantially arc shape around the ear. 7. The substrate for a storage battery electrode according to claim 1, wherein the radial crosspiece is formed into a bent crosspiece that is symmetrically bent at a portion of the branched crosspiece that faces the bending start end crosspiece portion.