KR20120081559A - Vented battery - Google Patents

Abstract

PURPOSE: A bent type power storage battery is provided to prevent floating of a spacer with simple structure, improving stability of installation of support members. CONSTITUTION: A bent type power storage battery comprises: an electrode plate group formed by inserting and alternately laminating a cathode plate, an anode plate, and a separator into an electrolysis bath(20) sealing an opening of top of the electrolysis cover(22); a spacer(17) arranged on both outer side of laminating direction of the electrode plates group; and a support element(21) preventing floating of the spacer between a connection conductor of the positive electrode and the negative electrode. The support member is arranged from a front to a backside of top of the spacer, bottom of an electrolysis bath cover, at least one connection conductor, and a front side of the electrolysis bath to backside.

Description

Vented Storage Battery {VENTED BATTERY}

This invention relates to the vent type storage battery which accommodated the electrode plate group and the spacer arrange | positioned outside the lamination direction of the electrode plate group in the electrolytic cell interior.

Conventionally, vent type accumulators having different capacities and electrolytic cells having the same dimensions have been formed for common parts. In this case, in the small-capacity storage battery, since the number of components of the pole plate decreases, a space is generated between the pole plate group and the electrolytic cell. Therefore, the spacer is inserted in the space | interval of the pole plate group and the electrolytic cell of the both outer side surfaces of the pole plate group in the lamination direction. This kind of spacer has the property of being easy to float in electrolyte solution. In order to prevent the injuries of this kind of spacer, the present applicant firstly consists of a flat part formed with a pole column through hole above the pole plate group in the electrolytic cell and a recess reaching the upper end of the pole plate group in the center, and the outer side of the recess. The storage battery provided with the support member in which the protrusion part was formed in the surface parallel to the pole plate group lamination direction of the is proposed (for example, refer patent document 1). And this support member is arrange | positioned above the pole plate group through the pole pillar formed in the upper part of the pole plate group through the pole pillar through-hole. Moreover, the bottom face of the support member recessed part is arrange | positioned in contact with the upper end part of an electrode plate group. At this time, the protrusion formed in the side surface of the support member recessed part is in contact with the upper end of the spacer.

Japanese Utility Model Registration No. 3101971

By the way, it is said that the said support member can be easily integrally shape | molded using the punching metal mold | die for shaping | molding which is easy to shape | mold. However, since the support member has a complicated shape and a large size, the production cost has increased due to the complicated mold for forming a part and the increase in raw material cost.

An object of the present invention is to provide a vent-type storage battery which can solve the problems of the conventional technology described above and can prevent the floating of the spacer with a simple structure.

MEANS TO SOLVE THE PROBLEM In order to achieve the said objective, this invention is the electrode plate group which laminated | stacked the positive electrode plate and the negative electrode plate alternately through the separator in the electrolytic cell which seals and seals an upper opening with an electrolytic cell cover, and both outer surfaces of the pole plate group in the lamination direction. A vent-type storage battery having a spacer disposed in the apparatus, comprising: a support member formed separately from the electrolytic cell lid between the connecting electrode of the positive electrode and the negative electrode of the electrode plate group, wherein the support member comprises: an upper surface of the spacer; A vented storage battery is characterized by being disposed in contact with a lower surface of an electrolytic cell lid and at least in contact with a connecting conductor, and disposed from the front surface of the electrolytic cell facing the stacking direction of the electrode plate group.

According to this structure, a support member can be formed without using a complicated shaping | molding die, and manufacturing cost can be reduced. In addition, since the support member is formed to contact the upper surface of the spacer and the lower surface of the electrolytic cell lid, the spacer can be prevented by simply placing the support member between the positive electrode and the negative electrode connecting conductor of the electrode plate group. Because of the assembly workability is good.

In this configuration, the electrolytic cell and the support member may be configured to be transparent members.

According to this structure, since the electrolytic cell was made transparent and the support member arrange | positioned in the electrolyzer was also made transparent, the height of the liquid level of the electrolyte solution in an electrolytic cell can be visually confirmed from the outer side of an electrolytic cell easily, and is it necessary to inject | pour electrolyte solution into an electrolytic cell? Whether or not can be easily determined.

Moreover, the said support member may be set as the structure which has the upper opening part and the bottom face, and is formed in the shape which the pair of side edges exist.

According to this structure, since the side surface of a support member contacts a current collector lead which extends from each pole plate of a pole plate group, and the connection conductor which converges the said current collector leads, it is reliably located in a predetermined position, Injuries can be reliably prevented.

Moreover, the said support member may be set as the structure by which the hole is formed in the edge of a pair of side surface.

According to this configuration, since the electrolyte easily comes and goes between the connecting conductors in the electrolytic cell, the liquid-liquidity can be improved.

In addition, when the support member is disposed in a space formed between the pole plate group and the spacer, the connection conductor and the current collector lead, the vertical height thereof is higher than the height from the upper surface of the pole plate group and the spacer to the bottom surface of the electrolytic cell cover. It may be formed high.

According to this structure, since only the difference of the height of a support member becomes a press stand, and the support member side surface is arrange | positioned so that it may follow a connection conductor, the movement of a support member to the horizontal direction can be suppressed, and stability of a support member can be improved. .

According to the present invention, there is provided a support member formed separately from the electrolytic cell cover between the positive and negative electrode connecting conductors of the electrode plate group, and the support member has a height from the upper surface of the spacer to the lower surface of the electrolytic cell cover, Since it has the height from the front surface of the electrolytic cell facing the stacking direction of the group to the lower surface of the electrolytic cell cover from the upper surface of the spacer arrange | positioned over the back surface, the structure of a spacer can be prevented from floating in a simple structure.

1 is a perspective view showing the configuration of the vent-type storage battery of this embodiment.
2 is a front view of a vent type storage battery.
3 is a side cross-sectional view of the vent type storage battery.
4 is a perspective view of the support member.
It is a figure which shows another form of a support member.
It is a figure which shows another form of a support member.

EMBODIMENT OF THE INVENTION Hereinafter, embodiment of this invention is described with reference to drawings.

FIG. 1: is a perspective view which shows the vent type storage battery 1 which concerns on embodiment to which this invention was applied, and the pole plate group 11 withdraw | derived from the electrolytic cell 20. As shown in FIG. 2 is a front view of the vent-type battery, and FIG. 3 is a side cross-sectional view of the vent-type battery 1.

As shown in FIG. 1 and FIG. 3, the vent-type storage battery 1 includes a pusher 18 including a pole plate group 11 and spacers 17 disposed on both outer surfaces of the pole plate group 11. The lamination | stacking direction of the furnace plate group 11 is integrated in the horizontal direction, and they are integrally formed, and these are inserted in the electrolytic cell 20 from the upper opening of the electrolytic cell 20, and are formed. Here, in the vent-type storage battery 1, the press-hole 18 may produce the battery of several kinds of capacity | capacitance with the same electrolytic cell, and at this time, the spacer 17 is provided in the both outer surfaces of the electrode plate group 11. It arrange | positions and hold | maintains this by the press opening 18. In addition, the case where the two electrode plate groups 11 and 11 are provided as an example here is shown. Although the illustration of each structural member below is abbreviate | omitted, the pole plate group 11 interposes a positive electrode plate in a negative electrode plate through a separator between a paste type or sintered positive electrode plate, and a paste type or sintered negative electrode plate. The layers are alternately stacked so as to form each other. In addition, the separator is formed by sandwiching microporous films such as a polyolefin sheet between two nonwoven fabrics, and arranged so that each electrode plate and the nonwoven fabric are in contact with each other.

As shown in FIG. 2, the current collector lead 12 protrudes from the upper portion of each electrode plate. The current collector leads 12a protruding from each negative electrode plate are collected on the right side of FIG. 2, and the current collector leads 12b protruding from each positive electrode plate are collected on the left side of FIG. 2. As shown in FIG. 2, current collector leads 12a and 12b are arranged in a state spaced apart from each other by a predetermined interval W1 at protruding points from the respective pole plates. Each current collector lead 12a, 12b is converged so as to be sandwiched by metal connecting conductors 13, 14, respectively. The connecting conductors 13 and 14 extend to the lower surface of the electrolytic cell lid 22, and the connecting conductors 13 and 14 are arranged in a state spaced apart from each other by a predetermined interval W3. The upper part of the connection conductors 13 and 14 is arrange | positioned so that the negative electrode column 15 and the positive electrode column 16 may contact and weld, respectively.

The number of pole plates constituting the pole plate group 11 is increased or decreased by the capacity of the vent-type storage battery 1 to be produced. Since the vent-type storage batteries 1 having different capacities are manufactured using the electrolytic cell 20 of the same size, when producing the vent-type storage batteries 1 having a small capacity, the number of pole plates constituting the pole plate group 11 is obtained. Decreases, and the thickness of the electrode plate group 11 becomes thin. Therefore, as shown in FIG. 3, on both outer surfaces of the stacking direction of the electrode plate group 11 so as to fill in the gap generated between both outer sides of the stacking direction of the electrode plate group 11 and the electrolytic cell 20, The spacer 17 is disposed. The spacer 17 is formed of resin such as polypropylene, and the thickness and the number of sheets change according to the capacity of the vent-type storage battery 1 to be produced. The height and the width | variety dimension of the spacer 17 are formed in the size substantially the same as the dimension of each electrode plate. In addition, in the example shown in FIG. 3, the vent type storage battery 1 arrange | positions four spacers 17 in the both outer surface of each pole plate group 11 in total, but between the pole plate groups 11 and 11 is shown. Two pieces of the spacer 17 in the middle may be comprised by one piece.

The support member 21 is inserted between current collector leads 12a and 12b, as shown to FIG. 2 and FIG. The support member 21 is formed in a substantially V-shaped cross section, and is fitted with respect to the depth dimension L1 of the electrolytic cell 20 extending from the front surface of the electrolytic cell 20 toward the stacking direction of the electrode plate group 11. It is arranged to fit in. The lower end part 2lb of the support member 21 is arrange | positioned so that it may fit and fit with respect to the space | interval W1 of each collector lead 12a, 12b, and is provided in contact with the upper end surface of the spacer 17. As shown in FIG. In addition, the support member 21 has the electrolytic cell cover 22, the electrode plate group 11 and the spacer 17, and the connecting conductor 13 in a state where the upper end surface thereof is in contact with the lower surface of the electrolytic cell cover 22. 14) is accommodated in the space R formed between the current collector leads 12a and 12b.

As shown in FIG. 3, the electrolytic cell lid 22 is provided with pole pillar through holes 23 and 24 through which the negative electrode pillar 15 and the positive electrode pillar 16 pass. The electrolytic cell lid 22 is bonded to the electrolytic cell 20 by fusion or adhesive with ultrasonic waves in a state where the negative electrode pillar 15 and the positive electrode pillar 16 have penetrated through the pole pillar through holes 23 and 24. As shown in FIG. 2, the space | interval H1 of the lower surface of the electrolytic cell cover 22 and the upper surface of the electrode plate group 11 is formed in substantially the same height also in the battery with different capacity.

The injection hole 25 is formed in the substantially center part of the electrolytic cell lid 22, as shown in FIG. After the electrolytic cell lid 22 is fused or bonded by an adhesive to the electrolytic cell 20 by an ultrasonic wave, the electrolytic solution is liquid-formed from the electrolyte injection hole 25 to the height of the highest liquid level line (not shown) provided on the side of the electrolytic cell 20. Inject. The electrolyte injection hole 25 is sealed with a liquid injection plug 26 which is detachable through an O-ring, a washer, or the like. In addition, when the liquid injection cap 26 is removed, it is comprised so that the hydrometer (not shown) can be inserted in the electrolyte injection hole 25.

Although not shown in the side surface of the electrolytic cell 20, the lowest liquid level line is provided in the lower side of the highest liquid level line. The lowest liquid level line is provided at substantially the same height as the upper surface of the electrode plate group 11 housed inside the electrolytic cell 20. The electrolytic cell 20 is formed of a transparent resin material, and is comprised so that the height of the electrolyte liquid surface can be seen visually from the outer side of the electrolytic cell 20. In addition, since the electrolytic cell 20 is formed of a transparent resin material, it is easy to visually check whether the support member 21 is inserted from the outside of the electrolytic cell 20.

Moreover, the screw groove is carved in the upper part of the negative electrode column 15 and the positive electrode column 16. As shown in FIG. After attaching the electrolytic cell cover 22 to the electrolytic cell 20 by fusion by ultrasonic waves or by an adhesive, the negative electrode column 15 and the positive electrode column 16 are screwed together with nuts 27 and 28 from the top to the electrolytic cell. It is fastened to the cover 22 by gas-liquid sealing.

The support member 21 is formed of a transparent synthetic resin having alkali resistance and acid resistance such as vinyl chloride or nylon. The support member 21 whose cross section is formed in substantially V-shape may be made into the structure which, for example, forms the flat-plate member made of vinyl chloride by bending in cross section to substantially V shape. As for the support member 21, the upper end part 21a, 21a of the support member 21 shown in FIG. 4 contacts the lower surface of the electrolytic cell cover 22, and the lower end part 2lb of the support member 21 is a spacer ( In the state in contact with the upper surface of the 17) is accommodated in the interior of the electrolytic cell 20. Moreover, the upper part of the side surface 21c, 21d of the support member 21 is arrange | positioned in the state which contacted the upper part of the connection conductor 13, 14, respectively. As a result, the support member 21 is a space R formed between the electrolytic cell cover 22, the electrode plate group 11 and the spacer 17, the connection conductors 13 and 14, and the current collecting leads 12a and 12b. Is kept firmly within. In addition, since the support member 21 is transparent, it is easy to confirm the height of the electrolyte solution liquid level in the electrolytic cell from the outside of the transparent electrolytic cell 20.

The dimension L2 of the depth direction of the support member 21 is formed in the substantially same dimension as the internal dimension L1 (refer FIG. 3) of the electrolytic cell 20 which extends from the front surface of the electrolytic cell 20 to the back surface. Therefore, the upper surface of the spacer 17 arrange | positioned at both outer surfaces of the lamination direction of the electrode plate group 11 in the lamination direction so that the space | interval which arises between both outer sides of the lamination direction of the electrode plate group 11 and the electrolytic cell 20 may be filled. , The lower end portion 2lb of the support member 21 is provided in contact.

The width W2 of the lower end portion 2lb of the support member 21 is formed to have substantially the same dimensions as the gap W1 of the current collector leads 12a and 12b, and the lower end portion 2lb of the support member 21 is the current collector lead. It fits in the space | interval W1 between 12a and 12b, and is hold | maintained. In addition, the width W4 between the upper end portions 21a and 21a of the support member 21 is approximately equal to or slightly wider than the interval W3 between the connecting conductors 13 and 14.

The height H2 of the support member 21 is the height from the upper surface of the electrode plate group 11 to the lower surface of the electrolytic cell cover 22 in a state where the electrode plate group 11 is accommodated inside the electrolytic cell 20. It is substantially the same as H1) (refer FIG. 2), or is formed slightly high.

According to such a structure, the support member 21 is pressed against the upper surface of the electrode plate group 11 and the spacer 17 by the electrolytic cell cover 22 in the state arrange | positioned in the space R, and a connection conductor ( 13, 14). Therefore, the movement inside the electrolytic cell 20 can be prevented. In addition, the support member 21 formed of vinyl chloride, nylon, or the like has some elasticity, and its height H2 extends from the upper surface of the electrode plate group 11 and the spacer 17 to the lower surface of the electrolytic cell cover 22. In the case where the height H1 is slightly higher than the height H1, the pressure difference is as much as the difference in height. Therefore, the support member 21 is press-fitted into the electrolytic cell cover 22, and the side surface 21c, 21d of the support member 21 is arrange | positioned so that the connection conductor 13, 14 may follow. Therefore, the movement of the support member 21 in the horizontal direction is suppressed, and the stability of the support member 21 installation improves.

In addition, as shown in (A) and (B) of FIG. 5, the support member 21 is provided with holes 29 communicating between the connecting conductors 13 and 14 on the side surfaces 21c and 21d. It is good also as a structure. One or a plurality of holes 29 may be provided. In FIG. 5A, a hole 29 continuous from the lower side of the side surface to the bottom surface is formed. 5B, the hole 29 is formed in the center of the side surface, and the semicircular hole 29 is formed in the side edge of the side surface. According to this structure, since electrolyte flows easily between the connecting conductors 13 and 14 in the electrolytic cell 20, liquid injection property improves.

As mentioned above, although this invention was demonstrated based on embodiment, this invention is not limited to this. In this embodiment, the support member 21 considers the ease of manufacture and the stability of the support member in the arrange | positioned state, and the cross section is formed in substantially V shape. Here, when making a cross section into a substantially V-shape, it should just be formed in the shape which has an upper opening part and a bottom face, and a pair of side edges exist, and even if a cross section is a substantially U-shape or a substantially C-shape, there is no problem. However, the upper surface of the spacer 17 formed in the same height dimension as the height from the upper surface of the electrode plate group 11 to the lower surface of the electrolytic cell cover 22 and disposed on both outer surfaces of the electrode plate group 11 in the stacking direction. If it can arrange | position in electrolytic cell 20 so that it may contact, it will not be limited to the said shape. For example, as shown to (A) and (B) of FIG. 6, you may be formed in the substantially cylindrical shape or flat plate shape provided with the hole 29 in which the hydrometer is inserted in the center. In FIG. 6 (A), the cross section is formed into a substantially cylindrical shape by adding an upper surface to a substantially V-shaped support member, and a hole 29 is formed in the center of the upper surface, the upper end portion of which is slightly It is formed as if it curved in the upward direction. And when the support member 21 is arrange | positioned in space R, the height (pressing stand) (delta) of this curved part is press-fitted by the electrolytic cell cover 22. As shown in FIG. When the presser bar (delta) is pressed, the both sides of the substantially cylindrical support member 21 closely follow the upper part of the connection conductors 13 and 14, and the stability of the support member 21 improves. In FIG. 6B, the support member is formed of one flat plate, and a hole 29 is formed in the center thereof. In addition, of the support member, the upper end portion of the support member contacts the lower surface of the electrolytic cell lid in the space R, and the lower end portion thereof is in contact with the upper surface of the spacer, but the upper end portion thereof has one connection conductor (for example, a positive electrode). Side) and the lower end thereof are disposed on a diagonal line so as to contact the other current collecting lead (for example, the negative electrode side).

The support member 21 is provided with the front surface and the back surface of the electrolytic cell 20, and three surfaces which contact the upper surface of the electrode plate group 11, as shown to FIG. 6 (C), It may be formed in a roughly c-shape formed in the same height dimension as the height from the upper surface of 11) to the lower surface of the electrolytic cell cover 22. FIG. The length L2 of the support member 21 shown in FIG. 6C is formed to have substantially the same length as the depth dimension L1 of the electrolytic cell 20. Therefore, the side surface 21e, 21f of the support member 21 is hold | maintained in the state which is in close contact with the inner surface of the front surface and the back surface of the electrolytic cell 20. As shown in FIG. Thereby, the installation stability of the support member 21 can be improved.

Moreover, although embodiment of this invention does not limit a battery type, it is applicable to not only a vent type alkaline storage battery but also a vent type lead acid battery. Moreover, it is applicable also to the other stationary type vent type storage battery which takes about the same structure.

It goes without saying that the configuration can be arbitrarily changed.

1: vented storage battery
11: the extreme plates
12a, 12b: current collector leads
13, 14: connecting conductor
15: negative pole
16: positive pole
17: spacer
20: electrolyzer
21: Support member
22: electrolyzer cover
25: electrolyte injection hole
26: pour cap
R: space

Claims (6)

A vented storage battery including a pole plate group in which an anode plate and a negative electrode plate are alternately laminated via a separator in an electrolytic cell that is closed-sealed with an electrolytic cell cover, and a spacer disposed on both outer surfaces of the pole plate group in the stacking direction. In
It is formed between the positive electrode and the negative electrode of the said electrode plate group separately from the said electrolytic cell cover, The support member is provided with the support member which prevents the float of the said spacer, The said support member is the upper surface of the said spacer, and the said electrolytic cell cover A vented storage battery characterized in that it is held in contact with a lower surface and at least one connection conductor and is disposed from the front surface of the electrolytic cell facing the stacking direction of the electrode plate group over the rear surface. The vent type battery according to claim 1, wherein the electrolytic cell and the support member are formed of a transparent member. The said support member is formed in the shape which has an upper opening part and a bottom face, and the pair of side sides exist, or the substantially cylindrical shape or flat plate shape provided with the opening hole in the center of Claim 1 or 2, Vented storage battery, characterized in that there is. The vent-type storage battery according to claim 3, wherein the support member has a hole formed on a pair of sides of the support member. The said support member is when the support member is arrange | positioned in the space formed between a pole plate group and a spacer, a connection conductor, and a collector lead, and the height of a perpendicular direction will be lower surface of an electrolytic cell cover from the upper surface of a pole plate group and a spacer. Vent type storage battery, characterized in that formed higher than the height to. The said support member is when the support member is arrange | positioned in the space formed between a pole plate group and a spacer, a connection conductor, and a current collector lead, and the height of a perpendicular direction will be lower surface of an electrolytic cell cover from the upper surface of a pole plate group and a spacer. Vent type storage battery, characterized in that formed higher than the height to.

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