TW201517363A - Method for manufacturing paste-like electrode plate for lead storage cell, and electrode-plate-cleaning device used in said method - Google Patents

Abstract

Provided is a method for manufacturing an electrode plate in which short-circuiting can be minimized by removing excess adhered active material without damaging the electrode plate surface. A lattice substrate (1) made from lead or a lead alloy is packed with a paste-like active material and then pressed to produce a filled electrode plate, and the filled electrode plate is subjected to initial drying. A spiral airflow (8) is directed against the electrode plate surface of the initially dried filled electrode plate (10) and excess active material adhering to the electrode plate surface is removed. Furthermore, the active material on both end surfaces in the thickness direction of a frame skeleton (2) of the filled electrode plate (10) is removed using a brush.

Description

Method for manufacturing paste-coated electrode plate for lead storage battery and electrode plate cleaning device using same

The present invention relates to a method for producing a pasted plate for a lead storage battery and a plate cleaning device using the same.

The paste-coated electrode is prepared by filling and pressing a paste-like active material on a grid substrate made of lead or lead alloy as a raw material, and drying it after initial drying. In order to hold the paste-form active material, the lattice substrate is often arranged such that the longitudinal and transverse bones are arranged in a lattice shape on the inner side of the frame bone. Specifically, as shown in FIG. 1 , the lattice substrate 1 is disposed inside the frame bone 2 on the outer circumference, and the longitudinal bone 3 and the transverse bone 4 are arranged in a lattice shape, and are disposed in the longitudinal direction or the short side of the frame bone 2 . The two ears 5 protruding from the outer sides of the direction are formed. Among the two ear portions 5, the ear portion on the lower side in Fig. 1 is provided for the convenience of transportation, and is finally cut. The grid substrate was filled and pressurized with a paste-like active material, and after initial drying, a plate was produced by aging and drying. Then, the positive electrode plate and the negative electrode plate of the ear portion on the side below the electrode plate are removed, and the separator plates are alternately laminated via the partition plate, and the ear portions of the plates of the same polarity are welded to each other to be electrically connected. A pole plate group is used to make a lead storage battery.

A method of filling and pressing a paste-form active material on a lattice substrate is as follows, for example. First, the grid substrate is placed flat on a belt conveyor and sequentially conveyed, and then the paste-like active material is filled on the lattice substrate below the filling machine having a hopper containing the paste-like active material. , made into a filling plate. Thereafter, pressure is applied by the forming roll device to pressurize the surface from the filling side and the opposite side to suppress thickness unevenness of the filling electrode. Here, the viscosity of the paste active material is high. When the active material is filled on the lattice substrate, excess active material may be adhered to the filling machine, and if the excess active material drops onto the filling side of the filling plate, In this way, by the forming roll device, the excess active material may temporarily adhere to the forming roll and be transferred again to the filling plate surface. Further, when the filling plate is pressurized by the forming roll device, a part of the active material may be peeled off and temporarily attached to the forming roll, and again transferred to the filling plate surface. In this way, when excess active material is adhered, it may be cooked and dried to form an electrode plate.

When the positive electrode plate and the negative electrode plate are laminated via the partition plate, the excess active material adhering to the electrode plate may puncture the partition plate and cause a short circuit. In addition, the group pressure of the plate group will concentrate on where the active material is excessively attached, the partition plate will be compressed, and the distance between the positive and negative plates will be shortened, resulting in lead when the battery cell is chemically converted and lead. When the battery is in a discharged state, a permeation short circuit is likely to occur.

In order to remove excess active material adhering to the filling plate, Patent Document 1 discloses a method of filling a filling electrode of a paste-like active material. After the board is initially dried, the excess active material that fills the end faces of the plates is brushed off. Further, Patent Document 2 discloses that a high-strength organic nonwoven fabric is interposed between the partition plate and the electrode plate to suppress damage of the partition plate.

[Previous Technical Literature] [Patent Document]

[Patent Document 1] Japanese Patent Laid-Open Publication No. 2005-276812

[Patent Document 2] Japanese Patent Laid-Open Publication No. 2011-70904

However, the method of removing excess active material by brushing as in Patent Document 1 may damage the active material held on the filling plate or cause the necessary active material to fall off.

Further, in the technique of sandwiching a high-strength organic nonwoven fabric between the electrode plates as in Patent Document 2, since the density of the organic nonwoven fabric is high, the amount of the electrolytic solution retained is small, and the battery capacity is lowered during discharge.

It is an object of the present invention to provide a method for producing an electrode plate which can remove excess active material adhering to the surface of the electrode plate without damaging the active material required to be retained on the electrode plate, thereby preventing the positive and negative electrode plates. Short circuit.

Another object of the present invention is to provide a plate cleaning apparatus suitable for carrying out the method of the present invention.

The present invention is based on the improvement of lead or lead alloy After the grid substrate is filled with the paste-form active material, the grid substrate filled with the active material is pressurized to prepare a filling electrode plate, and the initial drying process for initially filling the filling plate is performed, and after initial drying. The cleaning process for removing excess active material on the surface of the filling electrode plate, and the drying and drying process of aging and drying the filling electrode after the initial drying after the cleaning process to produce a paste type for a lead storage battery A method for manufacturing a paste-type electrode for a lead storage battery of a plate.

In the method of the present invention, in the cleaning process, a spiral air flow generating device is prepared which generates a spiral air flow that spirally flows around the imaginary center line, so that the imaginary center line is along the plate surface of the filling plate. Extending, and blowing a spiral air flow to the plate surface of the filling plate. The spiral air flow can also obtain the air pressure in the direction orthogonal to the air flow discharge direction, so that it is added to the air pressure in the discharge direction, and can be blown to the air flow compared to the straight air flow. The object gives a large impulse. According to the experiments of the inventors, if such a spiral air flow is used, the air flow will intensively touch the surface of the plate, and it is confirmed that it can be removed from the plate surface by the movement of the concentrated air flow along the surface of the plate. Strip excess adherent actives. In the present specification, the "imaginary center line extends along the plate surface of the filling plate" includes a slight inclination angle between the imaginary center line and the plate surface, in addition to the case where the imaginary center line is parallel to the plate surface. situation. Further, the inclination angle is preferably less than 5 degrees. According to the method of the present invention, excess active material adhering to the surface of the electrode plate filled with the electrode plate can be removed without damaging the active material necessary for holding on the filling electrode plate, and the excessive adhesion of the active material can be prevented. Short circuit between the negative electrodes. In addition, it will not reduce production efficiency rate.

In the case where one or more air nozzles are provided in the spiral air flow generation device, one or more air nozzles are preferably arranged such that the virtual center line extends along the plate surface of the filling plate. When the spiral air flow generating device is provided with one air nozzle, it is possible to design a relative motion between the air nozzle and the filling electrode, thereby causing the spiral air flow to contact the entire plate surface. In the case where the spiral air flow generating device is provided with a plurality of air nozzles, a plurality of air nozzles may be arranged at intervals so that the spiral air flow can touch the entire plate surface.

When the spiral air flow generating device includes a plurality of air nozzles, one or more air nozzles can be disposed such that the virtual center line extends along the plate surface of the filling plate, and the remaining one or more air nozzles The angle between the imaginary center line and the electrode plate surface of the filling electrode plate can be set to an inclination angle of 5 degrees or more and 30 degrees or less. In this manner, the state in which the spiral air flow ejected from the one or more air nozzles is in contact with the surface of the electrode plate is different from the state in which the spiral air flow ejected from the other one or more air nozzles is in contact with the surface of the electrode plate. The excess active material adhering to the surface of the electrode plate filled with the electrode plate is more reliably removed.

In the case where the spiral air flow generating device includes two air nozzle groups including a plurality of air nozzles, it is preferable to form two air nozzle groups as follows. Further, the two air nozzle groups are disposed at a predetermined interval so that one filling plate is positioned between the two air nozzle groups. If two air nozzle groups are arranged at a predetermined interval so that one filling plate is located between two air nozzle groups, then one piece can be filled from one piece. The two plates of the thickness direction face each other while removing excess active material.

A plate holding device may also be provided which holds a plurality of sheets of filling plates in a posture in which the plates face in the up-and-down direction and are spaced apart from each other between adjacent two pieces of filling plates. In this case, the spiral air flow generating device and the electrode plate holding device are configured to cause a relative movement between the plurality of sheets of the filling plate and the spiral air flow while the plurality of pieces of the filling plate are arranged side by side. The spiral air flow flows into the space and is sprayed to the face of the plate filled with the plates. In this way, excess active material can be sequentially removed from the surface of the plate of the plurality of plates.

In addition, the spiral air flow generating device and the plate holding device may be configured to allow a plurality of sheets of the filling plate and the spiral air flow to be opposite to each other in a direction orthogonal to the direction in which the plurality of filling plates are arranged side by side. During the operation, the spiral air flow flows into the space and is sprayed to the surface of the plate on which the plates are filled. Thus, even when the number of air nozzles provided in the spiral air flow generating device is small, excess active material can be removed from the entire plate surface.

The relative movement in a direction orthogonal to the direction in which the plurality of sheets are filled in parallel is preferably a reciprocating motion in a direction orthogonal to the direction in which the plurality of sheets are filled. If the reciprocating motion is used, the spiral air flow can be repeatedly touched to the surface of the electrode plate, so that the excess active material can be removed more reliably.

Between the plurality of sheets of filled plates and the stream of helical air, the speed of the relative motion in the direction in which the plurality of sheets are filled side by side is preferably slower than the speed of the reciprocating motion. In this way, the spiral air flow can be reliably touched to the surface of the plate.

Further, the distance of one reciprocating motion of the reciprocating motion is preferably a distance that is twice or more the length of one side of the frame bone of the filling electrode plate in the upper direction while being held by the electrode plate holding device. In this way, the spiral air flow can be completely blown onto the surface of the electrode plate, so that the portion where the spiral air flow cannot be touched can be reliably prevented.

Further, the electrode holding device may be configured to convey a plurality of active material charging plates in a direction in which one of the plurality of filling plates is arranged in parallel, thereby generating the relative operation in a direction in which the plurality of filling plates are arranged side by side. In this way, the assembly and disassembly operations of the plate holding device for filling the plates can be automated, so that the production line from the initial drying to the drying before drying can be easily automated.

When one of the filling plates is designed to be suspended by the electrode holding device, and the filling plate is transported in a suspended state, the assembly operation of the electrode holding device for filling the electrode plate becomes easy.

The spiral air flow generating device may further include two or more air nozzle groups including one or more air nozzles, and the two or more air nozzle groups are arranged in a direction parallel to the plurality of filling electrodes. The directions of the orthogonal directions are separated by a prescribed interval. In this case, the prescribed interval is substantially equal to the spacing between adjacent two sheets of filled plates. Further, the spiral air flow generating means reciprocates the two or more air nozzle groups in a direction orthogonal to the direction in which the plurality of filling electrodes are arranged side by side. Thus, when two adjacent filling plates are regarded as one set, the spiral air flow can be simultaneously blown to the electrode faces of the two or more charging plates.

In addition, the reciprocating motion of two adjacent air nozzle groups is preferably The direction of motion is reversed. In this way, it is possible to prevent excess active material from adhering again to the surface of the filling plate.

Further, when the air nozzle from the spiral air flow generating device is designed to blow the pulsed air jetted at a short interval, the excess adhering active material adhering to the surface of the electrode plate can be easily removed by the impulse of the pulsed air.

Preferably, the active material attached to the pair of end faces in the thickness direction of the frame bone filled with the electrode plate is removed by brushing a pair of end faces. The active material attached to the pair of end faces in the thickness direction of the frame bone filled with the electrode plate can be removed by brush cleaning, and the effect of preventing short circuit can be further improved.

An electrode plate cleaning apparatus for carrying out the method of the present invention, comprising a spiral air flow generating device that generates a spiral air flow that spirally flows around an imaginary center line; and a plate holding device that fills the plurality of plates The pole plate is extended in the up and down direction and held at an interval between adjacent two filling plates. The spiral air flow generating device is disposed such that the imaginary center line extends along the plate surface of the filling electrode plate, and the spiral air flow is blown onto the electrode plate surface of the filling electrode plate. Further, the spiral air flow generating device and the electrode plate holding device are configured such that a plurality of pieces of the filling plate and the spiral air flow are opposed to each other while the plurality of pieces of the filling plate are arranged side by side, and the spiral air is formed. The flow flows into the space to remove excess active material attached to the plate surface of the filled plate. According to this cleaning device, the method of the present invention can be carried out reliably.

1‧‧‧ lattice substrate

2‧‧‧Bone bone

3‧‧‧ Longitudinal

4‧‧‧ transverse bone

5‧‧‧ Ears

6‧‧‧Air nozzle

7‧‧‧Nozzle guides

8‧‧‧Spiral air flow

9‧‧‧belt conveyor

10‧‧‧Filling plates

11‧‧‧ Attached active substances

12‧‧‧Electric sliders

13‧‧‧Frame

14‧‧‧claw

Fig. 1 is a schematic view showing a grid substrate of a lead storage battery.

Fig. 2 is a schematic view showing an air nozzle according to an embodiment of the present invention.

(A) is a schematic view showing an arrangement position of a charging means for filling a plate, a filling electrode, and an air nozzle in the first embodiment of the present invention, and (B) shows a spiral air flow ejected from the air nozzle and Fill the relationship between the plates.

[Fig. 4] Schematic diagram of the positional relationship between the air nozzle and the plurality of filling plates.

Fig. 5 is a schematic view showing a state in which a plurality of air nozzles are disposed on a jaw in a third embodiment of the present invention.

Fig. 6 is a schematic view showing the configuration of a third embodiment of the present invention.

Fig. 7 (A) and (B) are schematic diagrams showing the positional relationship between the air nozzle and the plurality of filling electrodes in the third embodiment.

Hereinafter, an embodiment of a method for producing a pasted electrode for a lead storage battery of the present invention and an electrode cleaning device using the same will be described in detail.

In the present embodiment, the lattice substrate includes a lead or a lead alloy which is produced by casting or expanding. Lead alloys are made of lead, mainly tin, calcium, barium, etc.

The paste-form positive electrode active material or the paste-form negative electrode active material (hereinafter referred to as a paste-form active material) used in the present embodiment is filled and held on a lattice substrate. The paste active material is not particularly limited. For example, can use Lead powder, water, sulfuric acid, etc. containing lead oxide as a main component (in addition to the necessary characteristics of the positive electrode and the negative electrode, it is possible to add cutted fiber, carbon powder, lignin, barium sulfate, lead A paste-like positive electrode active material or a paste-form negative electrode active material produced by kneading with an additive such as dan.

A paste-like active material is filled on the lattice substrate 1 shown in FIG. 1 below the filling machine having a feed hopper for containing the paste-like active material, and the grid substrate filled with the active material is pressurized from both sides to prepare a filling. Plate. The filling amount of the paste-like active material filled in the lattice substrate 1 is calculated based on the design capacity of the battery, and it is preferable that the longitudinal bone 3 and the transverse bone 4 inside the frame bone 2 of the lattice substrate 1 are paste-like active materials. It is preferable to fill the paste-like active material to a thickness of the frame bone 2 or more. Thereafter, while the filled paste-like active material is still soft, a pressure is applied to the paste-form active material by a forming roll from the surface on the filling side and the opposite side thereof, and a pressurization process is performed. Here, the forming roll is formed by rotating a pair of rolls and sandwiching the loaded filling plate from the upper and lower sides to form an active material layer having a substantially uniform thickness. Further, by arranging the multi-array forming rolls to pressurize the filling of the plates, the active material layer can be more uniformly filled.

Thereafter, when the filling plates are overlapped with each other, the initial drying of the filling electrode is performed to such an extent that the active materials are not adhered to each other. However, it is necessary to set the drying conditions so as not to deviate from the range of moisture in the active material necessary for the drying process in the next project. In the initial drying method, hot air drying, infrared drying, or the like can be selected.

In the above filling and pressurizing works, it is attached to a filling machine, a forming roll, etc. The excess paste active may turn to the surface of the filled plate that has been filled with the specified amount of paste active. The excessively adhered active material may puncture the partition plate, and may easily cause a short circuit between the positive and negative electrodes, or a short distance between the positive and negative plates, and a problem of permeation short circuit.

In order to prevent excess active material from adhering to the surface of the electrode plate, a spiral air flow is sprayed on the electrode plate surface of the electrode plate after initial drying to remove the active material, and this method is used to compare the electrode with the brush. In the method of directly applying a force to remove the active material on the surface of the plate, it is less likely to cause scratches on the surface of the electrode plate, and the active material is less likely to fall off. There are many types of air nozzles for blowing air flow. If an air flow straight type air nozzle is used, it is difficult to accurately blow the air flow to the target position, so that the effect of removing excess active material is not good. If an air flow straight type air nozzle is used, it is also difficult to blow a flow of air to the electrode plate surface of the filling plate in a hanging state without a dead angle. In the present embodiment, the spiral air flow flowing in a spiral shape around the center line is sprayed to the electrode surface of the filling electrode plate so that the virtual center line extends along the electrode plate surface of the filling electrode plate, and is removed. Excess active substance attached. The spiral air flow, for example, a tubular air nozzle engraved with a spiral groove on the inner wall, a method of discharging compressed air along the spiral groove, or a nozzle guide member connecting the air nozzle to the hollow substantially truncated cone shape The small-diameter side opening is a method of rotating the air nozzle along the inner wall surface of the nozzle guide and ejecting from the large-diameter side opening.

Fig. 2 is a schematic view showing an air nozzle portion for discharging a spiral air flow used in the embodiment. The air nozzle 6 made of a flexible material is connected to the small-diameter side opening of the nozzle guide member 7, and the compressed air is discharged. The gas nozzle 6 rotates spontaneously along the inner wall surface of the nozzle guide member 7 to produce a spiral air flow 8. The spiral air flow 8 allows the air flow to be blown over a wide range compared to the straight air flow. Further, since the air pressure can be obtained in a direction orthogonal to the direction in which the air flow is discharged, the air pressure is added to the air pressure in the discharge direction, and the object to be blown by the air flow can be given to the air flow in the straight air flow. Larger impulse.

[First Embodiment]

FIG. 3(A) schematically shows a method of manufacturing a pasted electrode for a lead storage battery of the present invention, and a main part of the first embodiment of the electrode plate cleaning apparatus using the same, and FIG. 3(B) The relationship between the air nozzle 6 and the filling plate 10. As shown in Fig. 3(A), in the present embodiment, the pair of belt conveyors 9, 9 are suspended by a pair of ear portions 5, 5, and the filling electrode plates 10 are conveyed in a state of being suspended at a predetermined interval. Further, although not shown, the belt conveyors 9 and 9 are provided with a plurality of fitting portions at predetermined intervals in the moving direction of the belt, and include recesses into which the pair of ear portions 5 and 5 are fitted. The positioning of the filling electrode plate 10 is achieved by the presence of the fitting portion. Further, in the present embodiment, the plurality of sheets of the charging plate 10 are extended in the vertical direction by the pair of belt conveyors 9, 9 and between the adjacent two sheets of the filling plates 10, 10. The spacing is maintained to form a plate holding device. Further, in the present embodiment, the filling electrode plate 10 has a weight of 900 g or more, and even if the spiral air flow 8 is blown, it is not largely fanned.

The simplified electric motor 12 is fixed to the frame 13. Also borrow The air nozzle 6 is assembled to a gripper 14 that slides in the horizontal direction by the electric slider 12. The gripper 14 is driven by a linear servo motor (not shown) of the electric slider 12, and reciprocates along the longitudinal direction of the frame filling the electrode plate 10 above the filling electrode plate 10. The air nozzle 6 assembled to the jaw 14 is disposed such that its imaginary center line C extends along the surface of the plate on which the electrode plate 10 is filled. In the present embodiment, as shown in FIG. 3(B) and FIG. 4, the air nozzle 6 is disposed at a position above the gap between the two filling plates 10 and 10 so that the virtual center line C and the pole of the filling plate 10 are placed. The plate surface is substantially parallel, and a spiral air flow 8 is blown from the air nozzle 6, and the air nozzle 6 reciprocates in a direction orthogonal to the direction in which the filling plates are arranged. As a result, the spiral air flow 8 is sprayed to the opposing plate faces of the two filling plates 10 and 10 through the gap between the two filling plates 10 and 10, thereby removing the plate faces. Excessive attachment of active substance 11. Alternatively, it is also possible to design the pulsed air to be ejected from the air nozzles 6 at short intervals. In this way, the excess adhering active material adhering to the surface of the electrode plate can be easily removed by the pulsing force of the pulsed air. Further, when pulsed air is used, in particular, the moving speed of the air nozzle 6 is preferably as high as possible, and the moving speed of the filling plate is preferably set to 1/2 or less with respect to the speed of the air nozzle 6. speed.

Here, the width between the pair of belt conveyors 9, 9 is designed to be adjustable so that the packed plate suspensions of different sizes can be transported. The amplitude of the reciprocating motion of the electric slider 12 can be adjusted by a controller (not shown). The amplitude of the reciprocating action is adjusted to be placed on the filling plate If the length of the frame bone 2 (Fig. 1) between the pair of ear portions 5 and 5 is 10 or more, it is preferable to blow a spiral air flow to the entire electrode plate surface. In the present embodiment, the belt conveyors 9, 9 are temporarily stopped, and the electric slider 12 is reciprocated. However, it is also possible to design such that the plurality of sheets of the filling electrode 10 are moved while the spiral air flow 8 is blown to the surface of the electrode plate by filling the gap of the electrode plate 10. When the belt conveyors 9 and 9 are not temporarily stopped, it is possible to remove excess adhering active material on the continuous production line, and it is preferable to reduce the production efficiency.

The electrode holding device has a function of a conveying means for filling the electrode plate 10, and is designed such that a pair of belt conveyors 9 and 9 perform a conveying operation in synchronization, and a controller (not shown) can be used to adjust the conveying speed so as to be placed at the filling pole. The longitudinal direction of the frame bone 2 between the ear portions 5 and 5 of the plate 10 is conveyed without being inclined in a state of being closely inclined with respect to the conveyance direction (the direction in which the plurality of sheets are filled in parallel).

In the present embodiment, the air nozzle 6 and the electric slider 12 are a part of a spiral air flow generating device that generates a spiral air flow. In FIGS. 3(A) and (B), a compressed air generating device or the like is not shown. The compressed air is supplied from an air compressor pipe (not shown) to the air nozzle 6. Further, the supply air pressure can be adjusted by an air conditioner (not shown). As in the present embodiment, when the spiral air flow generating device includes only one air nozzle 6, it is possible to design a relative motion between the air nozzle and the filling plate 10, thereby making the spiral air The flow touches the entire surface of the plate. In FIG. 3, the filling electrode plate 10 is suspended in a predetermined interval in the conveying direction, and is spirally formed from above the filling electrode plate 10. The air flow 8 is introduced into the plate gap of the two sheets of the filling plate 10 to spray a spiral air flow 8 to the surface of the plate. However, depending on the size of the filling plate, the electric slider and the air nozzle 6 may be disposed along the frame 13 of one of the two frames 13 extending in the vertical direction as shown in FIG. 3(A). A spiral air flow is introduced from the side of the filling plate 10 (from the lateral direction) to the plate gaps of the two filling plates to remove excess adhering active material from the electrode surface.

In the above embodiment, the electrode holding device has a function of moving the filling plate 10, but it may be designed such that the electrode holding device does not have the function of moving the filling plate 10, but causes the spiral air flow to be generated. The device side has a function of moving the air nozzles 6 in the direction in which the plurality of filling plates 10 are arranged side by side, and between the plurality of filling plates 10 and the spiral air flow 8 in the direction in which the plurality of filling plates 10 are arranged side by side. A relative motion is generated, and the spiral air flow flows into the interval between the two filling plates, and is sprayed to the surface of the plate filled with the plates.

In the above embodiment, only one air nozzle 6 is used, but a plurality of air nozzles 6 may be spanned across the frame 2 disposed between the pair of ear portions 5 and 5 of the filling plate 10 (Fig. 1). The length range above the length is arranged in a straight line at a predetermined interval. In this way, as long as the electrode holding device has a function of moving the filling electrode 10, a spiral air flow can be blown to the entire electrode surface of the filling electrode 10.

[Second Embodiment]

5(A) to (C), the lead storage battery of the present invention is schematically disclosed A method of producing a pasted plate for use and a main portion of a second embodiment of the electrode plate cleaning apparatus using the method.

In the present embodiment, the spiral air flow generating device includes four air nozzles 6A to 6D that are assembled to the jaws 14 ' . The jaws 14 ' extend in a direction orthogonal to the direction in which the electric slider 12 extends (the direction in which the plurality of sheets fill the plates 10 side by side). Further, the gripper 14 ' is reciprocatingly slidable between the two frames by the electric slider 12.

The first air nozzle group is constituted by the two air nozzles 6A and 6B, and the second air nozzle group is constituted by the two air nozzles 6C and 6D. The first air nozzle group including the air nozzles 6A and 6B and the second air nozzle group including the air nozzles 6C and 6D are disposed at a predetermined interval so that one piece of the filling electrode plate 10 is located at the first air nozzle. Between the group and the second air nozzle group. By arranging the first air nozzle group and the second air nozzle group in this manner, it is possible to remove excess active material from the two plate faces of the one filling plate 10 facing in the thickness direction. Further, the air nozzles 6A and 6C are arranged such that their imaginary center lines extend along the plate surface of the filling plate 10, and the air nozzles 6B and 6D are held by the jaws 14 ' so that their imaginary center lines and The angle between the plate faces of the filling plate 10 is an inclination angle of 5 degrees or more and 30 degrees or less (in other words, the inclination of the axis of the nozzle flow guides of the inclined air nozzles 6B and 6D and the frame 13 (vertical direction)) The angle is in the range of 5 to 30 degrees). As described above, in the electrode plate surface of the filling electrode plate 10, a spiral air flow can be blown in a slightly elliptical shape having a long diameter in the hanging direction of the filling electrode plate 10. Thereby, it is not necessary to move the air nozzle 6 up and down in the hanging direction of the filling plate, and as long as it moves along the longitudinal direction of the frame bone, a spiral air flow can be blown to the entire electrode plate surface of the filling electrode. Further, since the spiral air flow discharged from the air nozzles 6A and 6C is in contact with the surface of the electrode plate, and the state in which the spiral air flow discharged from the air nozzles 6B and 6D is in contact with the surface of the electrode plate, the state can be more reliably removed. Excess active material attached to the surface of the plate on which the electrode plate 10 is filled. Further, in this case, the above-described inclination angle is preferably adjusted in accordance with the length of the filling plate 10 in the hanging direction. Further, the distance between the air nozzle 6 and the filling plate 10 is designed to fix the air nozzle 6 to the jaw 14 ' by means of a hardware that can change the assembly position, thereby being adjustable.

In the above embodiment, the electrode holding device has a function of moving the filling plate 10, but it may be designed such that the electrode holding device does not have the function of moving the filling plate 10, but causes the spiral air flow to be generated. The device side has a function of moving the air nozzles 6A to 6D in the direction in which the plurality of filling plates 10 are arranged side by side, and between the plurality of filling plates 10 and the spiral air flow 8, and the plurality of filling plates 10 are arranged side by side. In the direction of the opposite side, the spiral air flow flows into the interval between the two filling plates, and is sprayed to the surface of the plate filled with the plates.

Further, in the above-described embodiment, only the first and second air nozzle groups are used, but the same air nozzle group as the first and second air nozzle groups may be disposed across the pair of ears disposed on the filling plate 10. The length of the frame bone 2 (Fig. 1) between the portions 5 and 5 is longer than the predetermined interval. In this way, as long as the electrode holding device has a function of moving the filling electrode 10, a spiral air flow can be blown to the entire electrode surface of the filling electrode 10.

Further, in the present embodiment, it is also possible to design the pulsed air to be ejected at short intervals from the air nozzles 6A to 6D.

[Third embodiment]

Fig. 6 is a view schematically showing a main part of a third embodiment of a method for producing a paste-type electrode for a lead storage battery of the present invention and a plate cleaning device using the same. In the present embodiment, the spiral air flow generation device includes a plurality of (three in FIG. 6) air nozzle groups including one or more air nozzles (one in FIG. 6). Specifically, the electric slider 12A supported by the pair of frames 13A and 13A is assembled with an air nozzle 61 through a jaw (not shown), and is mounted on the electric slider 12B supported by the pair of frames 13B and 13B. The air nozzles 62 are assembled through the jaws (not shown), and the air nozzles 63 are assembled through the claws (not shown) on the electric slider 12C supported by the pair of frames 13C and 13C. The three air nozzle groups or The frames 13A to 13C are arranged in a direction orthogonal to the direction in which the plurality of sheets are filled in parallel, and are spaced apart from each other by an interval substantially equal to the interval between the adjacent two filling plates 10. Further, the electric sliders 12A to 12C of the spiral air flow generating device reciprocate the three air nozzles 61 to 63 in a direction orthogonal to the direction in which the plurality of filling electrodes 10 are arranged in parallel. In this way, two or more groups of adjacent two-piece filling plates can be simultaneously exposed to the spiral air. In the present embodiment, as shown in Figs. 7(A) and (B), the three air nozzles 61 to 63 can be dried in association with the three sets of adjacent two sheets of the filling plates. When the filling plate is transported from the state shown in Fig. 7(A) to the state shown in Fig. 7(B), the filling of a group of adjacent two pieces is performed. For the gap between the plates, the three air nozzles 61 to 63 are arranged to correspond to each other once.

Further, in the present embodiment, as shown in Figs. 7(A) and (B), the reciprocating motion of the air nozzles 61 to 63 included in the adjacent two air nozzle groups is reversed. In this way, it is possible to obtain an effect of preventing the excess active material from adhering again to the surface of the filling electrode.

Further, in the present embodiment, it is also possible to design the pulsed air to be ejected at short intervals from the air nozzles 61 to 63.

[Sweeping]

Next, after the grid substrate 1 is filled with the paste-form active material and pressurized, the active material may overflow from the frame bone 2 and adhere to the end surface in the thickness direction of the frame bone 2 . The adhered active material may be peeled off due to vibration during use of the lead storage battery, deterioration of the active material, or the like, and a short circuit may occur. Therefore, after the initial drying of the filling electrode plate 10 or after the spiral air flow 8 is blown, it is preferable to remove the active material adhering to the end surface in the thickness direction of the frame bone 2. The method of removing the active material can be easily performed by rotating the pair of brushes and allowing the frame bone 2 to pass through the brush to sweep the frame bone 2. The material of the brush can be considered as a wire, a synthetic resin, or an animal component, but it is preferable to use a wire brush in terms of strength and cost. Further, the active material attached to the frame bone 2 may be removed using a cutting tool without using a brush.

According to the above embodiments, it is possible to move the filling plate on one side and to introduce a spiral air flow in the gap between the plates facing the filling plate, in the production line. The excess active material attached to the surface of the electrode plate is removed. For the frame bone filling the electrode plate facing the air nozzle, the air nozzle will reciprocate at a distance above the length of the frame bone, when the electrode plate is filled. When the spiral air flow is introduced into the gap between the plates, the air flow is blown and spreads over the entire surface of the electrode plate, so that the effect of removing excess adhering active material is further enhanced.

In addition, the spiral air flow is blown from a plurality of air nozzles arranged in a direction in which the filling plate is moved, and a plurality of air nozzles are reciprocated in a section spanning the length of the frame bone across the opposing filling plates. During the operation, more spiral air flow can be introduced into the plate gap at a time. Further, since the spiral air flow can be introduced into the plate gap of the filling electrode plate without fail, the active material adhering to the filling electrode plate can be uniformly removed.

The active material adhering to the end surface in the thickness direction of the frame bone filled with the electrode plate can be removed by brush cleaning, and the effect of preventing short circuit can be further improved.

[Examples]

Hereinafter, embodiments of the invention will be described in detail.

Made by adding lead and alloy of calcium and tin to lead

Positive and negative grid substrate: vertical: 395mm × horizontal: 142mm × thickness: 6mm

Negative grid substrate: vertical: 395 mm × horizontal: 142 mm × thickness: 4 mm

Cast grid substrate.

The composition of the paste positive and negative electrode active material is not particularly limited, and here, lead powder containing lead oxide, water, sulfuric acid, etc. may be added (may also be combined with the characteristics of the positive electrode and the negative electrode to add short fibers, carbon powder, lignin, barium sulfate). Lead, etc. Additives) are produced by mixing.

When the grid substrate is moved in a state of being lying on the belt conveyor, when it passes under the filling machine having the feed hopper for containing the paste-form active material, the paste-form active material is filled and pressed by a forming roll to produce Fill the plates. The filling amount of the paste active material was adjusted so that the dry mass became 1150 g of a positive electrode and 900 g of a negative electrode. Thereafter, the two ear portions of the produced filling plate were suspended by a belt conveyor, and the filling plate was sprayed while warming while being suspended, and initial drying was performed. Thereafter, the work described below is carried out.

(Example 1)

As shown in FIG. 3(A), one air nozzle 6 is assembled to the electric slider 12 so that the distance between the frame 2 of the filling electrode plate 10 facing the opposite side and the large diameter side opening of the nozzle guide of the air nozzle 6 becomes 20mm. Next, the distance between the plates of the adjacent two filling electrodes 10 and 10 was set to 20 mm, and the suspension was suspended in the belt conveyors 9, 9 to be in a suspended state. The belt conveyors 9 and 9 are not driven, and the air nozzles 6 are reciprocated along the longitudinal direction of the frame bone 2 between the ears 5, 5 of the filling plate 10 while the filling plate 10 is stationary. The spiral air flow discharged from the air nozzle 6 is introduced into the center portion of the plate gap of the adjacent two filling electrode plates 10 and 10.

(Example 2)

In the first embodiment, the belt conveyors 9 and 9 are driven to move the filling plate 10 while the air nozzles 6 are filled in the ears of the electrode plate 10. 5 and 5 reciprocate along the longitudinal direction of the frame bone 2 so that the spiral air flow 8 discharged from the air nozzle 6 is introduced into the plate gap of the adjacent two filling plates 10 and 10.

(Example 3)

As shown in Figs. 4(A) to (C), the air nozzles 6A to 6D are assembled to the jaws 14 ' of the electric slider 12, and the frames 13 and 13 are sandwiched and assembled on each side, in one Among the two sides, one of the air nozzles 6B and 6D is inclined by 10 degrees in the direction of the frame 13, and is adjusted so that the distance between the end surface of the filling electrode plate 10 and the large-diameter side opening of the nozzle guide of the air nozzle is 20 mm. Then, while the filling electrode 10 is being moved, the air nozzles 6A to 6D are reciprocated. Here, the conveying speed of the filling electrode plate is adjusted, and, for example, when the position of the filling electrode plate 10 is located directly under the electric sliding member 12, the movement of the air nozzles 6A to 6D and the discharge of the spiral air flow 8 are started. When the air nozzles 6A to 6D are reciprocated once, the position of the next loaded filling plate 10 is carried directly below the electric slider 12.

Further, in Examples 1 to 3, the supply air pressure to the air nozzle was 0.15 MPa, and the inner diameter of the air nozzle was 2 mm (manufactured by GA-REW Co., Ltd., trade name: SA-300S-32-SUSE).

After the above-described respective embodiments, the active material adhering to the end surface in the thickness direction around the frame bone was brushed by the wire brush while the filling electrode plate was suspended.

(Comparative example)

After the initial filling of the filled electrode plate prepared as in the first embodiment, the spiral air flow is not introduced into the plate gap of the filled electrode plate, but only the active material adhering to the end face in the thickness direction of the frame bone is as in the first embodiment. Removed as usual.

<Comparison of the number of sheets filled with excess active material still remaining and remaining>

In the examples and comparative examples, 1000 positive electrode filling plates and negative electrode filling plates were produced, and the number of filling plates was not able to remove excess active material and still adhere to the surface of the electrode plate, as shown in Table 1.

Observing Table 1, the example of blowing a spiral air flow, the number of filling plates still attached to the excess active material is greatly reduced compared to the comparative example. less. It can be seen that in Example 3 using four air nozzles, the effect of removing the active material was better. In the examples and comparative examples, the active material on the surface of the electrode plate was not damaged or peeled off.

<Comparison of capacity of lead storage battery>

The positive electrode filling electrode plate and the negative electrode filling electrode plate produced in the third embodiment and the comparative example were alternately laminated with a predetermined number of sheets via a partition plate, and the same poles were welded to each other by a strap to form a pole. Plate group. The produced electrode group was inserted into the battery cell, the lid body was assembled, the pole was sealed, a predetermined amount of dilute sulfuric acid was injected, and chemical conversion of the battery cell was performed to produce a lead storage battery. Further, the positive and negative electrodes were filled, and in Example 3 and Comparative Example, excess active material was removed and used.

The produced lead storage battery was compared with the discharge time by a discharge current of 150 A and a discharge stop voltage of 1.8 V to obtain Example 3: 10.26 h.

Comparative example: 10.18h, there is no significant difference. From this, it is understood that a paste-type electrode plate in which the battery active capacity is maintained and the attached active material causing the short-circuit is removed can be produced.

[Industry Utilization]

According to the present invention, it is possible to remove excess active material adhering to the surface of the electrode plate filled with the electrode plate without damaging the active material required to be held on the filling electrode plate, and to prevent between the positive and negative electrodes caused by excessive adhesion of the active material. Short circuit.

5‧‧‧ Ears

6‧‧‧Air nozzle

8‧‧‧Spiral air flow

9‧‧‧belt conveyor

10‧‧‧Filling plates

11‧‧‧ Attached active substances

12‧‧‧Electric sliders

13‧‧‧Frame

14‧‧‧claw

C‧‧‧ imaginary centerline

Claims (26)

A method for producing a paste-type electrode for a lead storage battery is characterized in that after filling a paste-form active material on a grid substrate made of lead or a lead alloy, the grid substrate filled with the active material is pressurized to form a filling electrode. a board engineering, an initial drying process for initial drying of the filling plate, and a cleaning process for removing excess active material from the surface of the filling plate after initial drying, and the filling electrode after the cleaning process A method for manufacturing a paste-type electrode for a lead-acid battery using a paste-type electrode for a lead-acid battery, which is prepared by a aging process and a drying process, and is characterized in that the cleaning process is prepared in a spiral shape. An air flow generating device that generates a spiral air flow that spirally flows around an imaginary center line, and extends the imaginary center line along an electrode surface of the filling plate to form the electrode surface of the filling plate The aforementioned spiral air flow is blown. The method for producing a pasted electrode for a lead storage battery according to the first aspect of the invention, wherein the spiral air flow generating device includes one or more air nozzles, and the one or more air nozzles are The imaginary centerline is arranged to extend along the aforementioned plate surface of the filling plate. The method for producing a pasted electrode for a lead storage battery according to the first aspect of the invention, wherein the spiral air flow generating device includes a plurality of air nozzles, and one or more of the air nozzles are arranged Make the aforementioned imaginary center The wire extends along the electrode plate surface of the filling electrode plate, and the remaining one or more of the air nozzles are arranged such that an angle between the virtual center line and the electrode plate surface of the filling electrode plate is 5 degrees or more Tilt angle below 30 degrees. The method for producing a pasted electrode for a lead storage battery according to the first aspect of the invention, wherein the spiral air flow generating device includes two air nozzle groups each composed of a plurality of air nozzles, the plural The air nozzles are disposed to be orthogonal to the surface of the electrode plate, and are spaced apart from each other by a predetermined interval in a direction in which the direction intersecting with the imaginary center line is staggered, and the two air nozzle groups are arranged at a predetermined interval so that one piece The filling plate is located between the two air nozzle groups. The method for manufacturing a pasted electrode for a lead storage battery according to any one of claims 1 to 4, wherein the electrode holder is provided with a plurality of the above-mentioned filling plates The posture extending in the up-and-down direction is maintained at an interval between two adjacent filling plates, and the spiral air flow generating device and the electrode holding device are configured to allow a plurality of filling plates and the spiral air to flow. The relative movement is performed while the plurality of sheets of the filling plate are arranged side by side, and the spiral air flow flows into the space and is sprayed onto the electrode surface of the filling electrode. The method for producing a pasted electrode for a lead storage battery according to the fifth aspect of the invention, wherein the spiral air flow generating device and the electrode holding device are configured to allow the plurality of filling plates and the spiral The air flow flows in a direction orthogonal to the direction in which the plurality of filler plates are arranged in parallel with each other, and the spiral air flow flows into the space and is sprayed into the filler plate. Plate surface. The method for producing a pasted electrode for a lead storage battery according to claim 6, wherein the relative operation in a direction orthogonal to a direction in which the plurality of filling plates are arranged is the same as The direction in which the plurality of sheets are filled side by side is a reciprocating motion in the direction orthogonal. The method for manufacturing a pasted plate for a lead storage battery according to the seventh aspect of the invention, wherein the plurality of filling plates and the spiral air flow are generated, and the plurality of filling plates are formed toward the plurality of sheets The speed of the aforementioned relative motion in the direction of the sideways is slower than the speed of the aforementioned reciprocating motion. The method for producing a paste-type electrode for a lead storage battery according to claim 7, wherein the distance of the reciprocating movement of the reciprocating motion is maintained while being held by the electrode holding device. The distance from the side of the frame bone filling the electrode plate in the upward direction is twice or more. The method for producing a pasted electrode for a lead storage battery according to the fifth aspect of the invention, wherein the electrode holding device is configured to fill the plurality of active material charging plates toward the plurality of filling plates The parallel movement is carried out in the direction of one of the parallel rows, whereby the relative movement is generated in the direction in which the plurality of filling plates are arranged side by side. The method for manufacturing a pasted plate for a lead storage battery according to claim 9, wherein the one of the filling plates is provided on the ear The portion is suspended by the electrode holding device, and the filling plate is transported in a suspended state. The method for producing a paste-type electrode for a lead storage battery according to the above aspect of the invention, wherein the spiral air flow generation device includes two or more of one or more air nozzles. In the air nozzle group, the two or more air nozzle groups are disposed at a predetermined interval in a direction orthogonal to a direction in which the plurality of filling electrodes are arranged in parallel, and the predetermined interval is substantially equal to two adjacent charging electrodes In the space between the plates, the spiral air flow generating means reciprocates the two or more air nozzle groups in a direction orthogonal to the direction in which the plurality of filling electrode plates are arranged side by side. The method for producing a paste-type electrode for a lead-acid battery according to claim 12, wherein the reciprocating motion of the adjacent two air nozzle groups is reversed. The method for producing a pasted electrode for a lead storage battery according to the second aspect of the invention, wherein the air nozzle of the spiral air flow generating device is blown at a short interval Pulsed air jetted. The method for producing a pasted electrode for a lead storage battery according to any one of the first aspect of the present invention, wherein the activity of the pair of end faces in the thickness direction of the frame bone adhering to the filler plate is The substance is removed by brushing the pair of end faces. An electrode plate cleaning device which is formed by filling a lattice-like active material on a grid substrate made of lead or lead alloy, and then pressing the grid substrate filled with the active material to form a filling electrode, and filling the filler The initial drying process of the electrode plate, the cleaning process for removing excess active material from the surface of the filler plate after initial drying, and the drying and drying of the filler plate after the cleaning process. An electrode plate cleaning device used in a method for producing a paste-type electrode for a lead-acid battery for a lead-acid battery for producing a lead-acid battery, comprising: a spiral air flow generating device; a spiral air flow that spirally flows around the imaginary center line; and a plate holding device that extends the plurality of pieces of the filling plate in a posture in which the plate faces in the up-and-down direction and in the adjacent two pieces of the filling plate The spacing between the gaps is maintained; the spiral air flow generating device is configured to extend the imaginary centerline along the pad of the filling plate And blowing the spiral air flow to the electrode surface of the filling electrode plate, wherein the spiral air flow generating device and the electrode plate holding device are configured to allow the plurality of filling plates and the spiral air flow Between the plurality of sheets filled in the direction in which the plates are arranged in parallel, the spiral air flow flows into the space and is sprayed onto the electrode surface of the filling electrode. The electrode plate cleaning device according to claim 16, wherein the spiral air flow generating device has one or more air jets In the nozzle, the one or more air nozzles are disposed such that the imaginary center line extends along the electrode surface of the filling electrode. The electrode plate cleaning device according to claim 16, wherein the spiral air flow generating device includes a plurality of air nozzles, and one or more of the air nozzles are disposed such that the virtual center line is along the aforementioned The electrode plate surface of the filling electrode plate extends, and the remaining one or more air nozzles are disposed such that an angle between the virtual center line and the electrode plate surface of the filling electrode plate is 5 degrees or more and 30 degrees or less. slope. The electrode plate cleaning device according to claim 16, wherein the spiral air flow generating device includes two air nozzle groups including a plurality of air nozzles, and the two air nozzle groups are arranged to be spaced apart The predetermined interval is such that one of the aforementioned filling plates is located between the two air nozzle groups. The electrode plate cleaning device according to any one of claims 16 to 19, wherein the spiral air flow generating device and the electrode plate holding device are configured to allow the plurality of filling plates and the spiral air flow The relative movement is performed while the plurality of sheets of the filling plate are arranged side by side, and the spiral air flow is caused to flow into the space to dry the filling electrode. The electrode plate cleaning device according to claim 16, wherein the spiral air flow generating device and the electrode plate holding device are The spiral air flow is caused to flow between the plurality of filling electrodes and the spiral air flow in a direction orthogonal to a direction in which the plurality of filling electrodes are arranged in parallel. Within the interval, it is sprayed onto the surface of the electrode plate of the filling electrode plate. The electrode plate cleaning device according to claim 21, wherein the relative movement in a direction orthogonal to a direction in which the plurality of filling plates are aligned is in a direction parallel to the plurality of filling plates Reciprocating motion in the direction of orthogonality. The electrode plate cleaning device according to claim 16, wherein the electrode plate holding device is configured to direction one of the plurality of active material charging plates in a direction in which the plurality of sheets are filled in the electrode plates. Handling, thereby generating the aforementioned relative motion in the direction in which the plurality of sheets of filling plates are arranged side by side. The electrode plate cleaning device according to claim 23, wherein the spiral air flow generation device includes two or more air nozzle groups including one or more air nozzles, and the two or more airs The nozzle group is disposed at a predetermined interval from a direction orthogonal to a direction in which the plurality of filling plates are arranged in parallel, and the predetermined interval is substantially equal to an interval between the adjacent two filling plates, the spiral air flow The generating device reciprocates the two or more air nozzle groups in a direction orthogonal to the direction in which the plurality of filling electrode plates are arranged side by side. The electrode plate cleaning device according to claim 24 of the patent application, Wherein, the reciprocating motion of the adjacent two air nozzle groups has opposite movement directions. The electrode plate cleaning device according to claim 24, wherein the pulse air that is ejected at a short interval is blown from the air nozzle of the spiral air flow generating device.