JP2006147338A - Manufacturing method and device of battery electrode plate - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a manufacturing method and a manufacturing device of a battery electrode plate capable of restraining scatter of filling quantity of activator paste, and manufacturing with optimum filling quantity of the activator paste in a width direction of a core material. <P>SOLUTION: A surface density W1 at a first prescribed part SB of the flat plate-shaped core material 1 is measured, and a prescribed quantity of activator paste P is filled in the core material 1. Next, a part of the filled activator paste P is removed over whole width in width direction WT of the core material filled with paste IP. Further, a second surface density W2 at the first prescribed part SB or neighboring area thereof of the core material filled with paste IP is measured. The electrode plate for the battery is manufactured by adjusting removing quantity of the activator paste P by using the first surface density W1 and the second surface density W2 so that the surface density of the activator paste P becomes a prescribed value at a removing process. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to a method and apparatus for manufacturing a battery electrode plate.

In the production of a battery electrode plate, in the step of filling an active material paste into a flat core material, the battery characteristics such as capacity are determined by the filling amount, so the active material paste is used as a core material with an appropriate filling amount. Needed to be filled.
As a method of filling the core material with an appropriate filling amount in the step of filling the active material paste, for example, a method disclosed in Patent Document 1 has been proposed. Specifically, this method includes a supply process of continuously supplying a long core material, a first weight measurement process for determining the weight per unit area of the core material, and an active material paste filled in the core material And a second weight measuring step for obtaining the weight per unit area of the core material after filling. Furthermore, using the weight per unit area of the core material measured in the first weight measurement step and the second weight measurement step, the weight per unit area of the active material paste filled in the core material is calculated. A weight calculating step. Furthermore, it has a feedback control step of feedback controlling the filling amount of the active material paste in the filling step based on the weight per unit area of the active material paste.
Moreover, in this patent document 1, in the filling in the filling step, a method of filling the core material with an active material paste using an injection nozzle and adjusting the filling amount by increasing or decreasing the injection amount of this injection nozzle is exemplified. ing. Specifically, the measured filling amount of the active material paste is compared with a predetermined value, and when the filling amount is larger than the predetermined amount, the injection amount of the active material paste is decreased and the filling amount is smaller than the predetermined amount. Is adjusted to increase the spray amount of the active material paste.
Reissue WO02 / 003487 (FIG. 1)

However, in the method using the spray nozzle described in Patent Document 1, since it is difficult to finely adjust the spray amount of the active material paste, the filling amount of the active material paste tends to be large.
Furthermore, in the manufacturing method described in Patent Document 1, although the filling amount of the active material paste can be controlled in the longitudinal direction of the core material, the filling amount in the width direction cannot be controlled. Therefore, when a wide core material is used and the active material paste is filled into the core material over a wide width, there is also a problem with variations in the filling amount in the width direction.
The present invention has been made in view of such problems, and suppresses variation in the filling amount of the active material paste in a direction (longitudinal direction) perpendicular to the width direction of the core material, thereby optimizing the filling amount of the active material paste. It aims at providing the manufacturing method and manufacturing apparatus of the electrode plate for batteries which were made.
It is another object of the present invention to provide a battery electrode manufacturing method and manufacturing apparatus that suppresses variations in the width direction of the core material and has an optimal filling amount of the active material paste.

  The solution is a method of manufacturing a battery electrode plate in which a flat core material is filled with an active material, the first surface density measuring step of measuring a first surface density at a predetermined portion of the core material; , Filling a predetermined amount of the active material paste into the core material measured the first surface density to form a paste-filled core material, over the entire width in the width direction of the paste-filled core material, A removal step of removing a part of the filled active material paste, and a second surface density of the paste-filled core material from which a part of the active material paste has been removed is measured at a second area density at the predetermined part or its vicinity. And adjusting the removal amount of the active material paste in the removal step so that the filling surface density of the active material paste calculated from the first surface density and the second surface density becomes a predetermined value. For manufacturing a battery electrode plate A.

In the manufacturing method of the battery electrode plate of the present invention, the removal step of removing the filled active material paste is provided after the filling step. Moreover, by controlling the amount of removal from the core material filled with the active material paste by the filling surface density of the active material paste calculated from the first and second surface densities measured in the first and second surface density measurement steps. The filling surface density of the active material paste can be adjusted appropriately.
As a method of adjusting the removal amount, for example, specifically, the filling surface density of the active material paste obtained by subtracting the first surface density from the second surface density is compared with a predetermined value (target value), When the measured filling surface density is larger than a predetermined value (target value), the removal amount of the active material paste in the removal process is increased, and when the measured filling surface density is smaller than the predetermined value, the removal amount is decreased. Adjust as follows.

  In this case, it is preferable that the first and second surface densities are measured for a plurality of predetermined portions, the filling surface density for each predetermined portion is obtained, and the removal amount is adjusted based on the average value thereof. This is because even if the measured first and second surface density values include sudden abnormal values due to noise or the like, the influence of the abnormal values can be suppressed.

  As a filling method in the filling step, any method can be adopted as long as it is a method that can fill the core material with the active material paste with a predetermined amount of surface density. For example, a method of filling an active material paste by spraying it from a nozzle toward the filling surface of the core material, a method of transferring and filling the active material paste to the core material via a roller, and the like can be mentioned.

In addition, as a core material, it is what forms the base | substrate of an electrode, and has a structure which can be filled with an active material paste and can hold | maintain an active material. For example, as a positive electrode core material in a nickel metal hydride storage battery, one having a two-dimensional or three-dimensional form such as a nickel sheet, a perforated body, a lath body, or a porous body is used.
Further, as the active material filled in the core material, an oxidizing agent (positive electrode active material) or a reducing agent (negative electrode active material) involved in the electromotive reaction of the battery is used. As a positive electrode active material in a nickel metal hydride storage battery, for example, a material mainly composed of nickel hydroxide and added with a cobalt compound in order to improve discharge efficiency can be mentioned. As the active material paste, a paste obtained by kneading active material powder with water or the like can be used.

  In addition, as a method for measuring the surface density in the first and second surface density measurement steps, any method can be used as long as the surface density of the core material or the active material paste-filled core material can be measured at a predetermined site or its vicinity. Techniques can also be adopted. For example, there is a method in which the surface density is obtained by irradiating a predetermined part such as a core material with X-rays and measuring the amount of transmission to obtain the weight of a substance included in the irradiation range.

Moreover, as a removal method of the active material paste in the removal step, any method can be adopted as long as a part of the active material paste filled in the core material can be removed over the entire width of the core material. For example, a method of removing the active material paste by pressing the blade edge over the entire width in the width direction against the paste-filled core material to scrape off a part of the active material paste, or the outer peripheral surface of the scraping roll over the entire width in the width direction. There is a method of scraping and removing a part of the active material paste from the core material by rotating while pressing against the paste-filled core material.
Further, as a method of adjusting the removal amount, for example, the filling surface density of the active material paste obtained by subtracting the first surface density from the second surface density is compared with a predetermined value (target value). When the measured filling surface density is larger than a predetermined value (target value), the removal amount of the active material paste in the removal process is increased. When the measured filling surface density is smaller than the predetermined value, the removal amount is decreased. Adjust to Any method for adjusting the removal amount may be used as long as the removal amount of the active material paste by this removal method can be adjusted according to the removal method in the removal step. For example, as a removal method, when part of the active material paste filled in the core material with a blade is scraped off, the blade position with respect to the paste-filled core material may be adjusted according to the removal amount. Further, as the removal method, when the active material paste is scraped and removed by the scraping roll, the position of the outer peripheral surface of the scraping roll with respect to the core material may be adjusted according to the removal amount. Alternatively, the rotation speed of the scraping roll may be adjusted.
In adjusting the removal amount, the first and second surface densities are measured for a plurality of predetermined portions, the filling surface density for each predetermined portion is obtained, and the removal amount is adjusted based on the average value thereof. Is preferably performed. This is because even if the measured first and second surface density values include sudden abnormal values due to noise or the like, the influence of the abnormal values can be suppressed.

  Further, in the above method for manufacturing a battery electrode plate, the core material is a long plate-shaped core material that is relatively conveyed in a longitudinal direction orthogonal to the width direction, and the removing step includes: The active material paste is removed by a scraping roll, and the removal amount of the active material paste is preferably adjusted by changing the rotation speed of the scraping roll.

In the method for producing an electrode plate for a battery according to the present invention, a part of the active material paste filled with a scraping roll is removed from the long flat core material in the removing step. Further, the removal rate of the active material paste is adjusted by changing the rotation speed (the number of rotations per unit time) of the scraping roll.
By doing in this way, even when a long core material is relatively conveyed in the longitudinal direction, the active material paste can be continuously removed, so that the battery electrode plate can be suitably manufactured. it can.
Further, when the rotation speed of the scraping roll is increased, the amount of the active material paste removed tends to increase. Therefore, the relationship between the rotation speed of the scraping roll and the removal amount of the active material paste is investigated in advance, and the removal speed of the active material paste is appropriately controlled by appropriately controlling the rotation speed of the scraping roll using this relationship. The amount can be adjusted.
The rotation direction of the scraping roll may be the same direction as the transport direction or the reverse direction. Rotating in the direction opposite to the conveying direction is preferable because more active material paste can be removed.
Furthermore, the core material may be transported relatively in the longitudinal direction. Specifically, in addition to the case where the core material itself is moved and conveyed in the longitudinal direction, the core material itself is stationary, and the device for measuring the first surface density, the scraping roll, etc. are moved. You may make it do.

  It is a manufacturing method of the battery electrode plate according to any one of the above, wherein the first areal density measurement step includes the width within the predetermined width orthogonal range in a direction orthogonal to the width direction of the core material. The first surface density is measured at each of the plurality of predetermined portions located at predetermined width direction intervals in the direction, and the second surface density measurement step is performed at each of the plurality of predetermined portions or the vicinity thereof. The second surface density was measured, and the adjustment of the removal amount of the active material paste was calculated using the first surface density and the second surface density applied to the plurality of predetermined portions in the predetermined width orthogonal range, It is preferable to use a method for producing a battery electrode plate using a plurality of filling surface density representative values related to the filling surface density in a predetermined width orthogonal range.

In the manufacturing method of the battery electrode plate of the present invention, in the first surface density measurement step, a plurality of positions that are located within a predetermined width orthogonal range in a direction orthogonal to the width direction of the core material and at predetermined width direction intervals in the width direction. The first surface density is measured at each predetermined portion. Further, in the second surface density measurement step, the second surface density is measured at each of a plurality of predetermined portions or the vicinity thereof. Further, the filling surface density representative value in the predetermined width orthogonal range is calculated using the corresponding first surface density and second surface density corresponding to the plurality of predetermined portions, and the removal amount of the active material paste is calculated using this value. Adjust.
In the present invention, as described above, the active material is used by using the filling surface density representative value obtained from the first and second surface densities of a plurality of predetermined portions positioned at predetermined intervals in the width direction in the width direction within the predetermined width orthogonal range. The amount of paste removed is adjusted. For this reason, even if the measured first and second surface density values include sudden abnormal values due to the influence of noise or the like, the influence of the abnormal values is suppressed by removing or averaging them. By using the filling surface density representative value calculated in this way, it is possible to suppress inappropriate fluctuations in the removal amount of the active material paste due to the influence of such an abnormal value.

  Within the predetermined width orthogonal range, the plurality of predetermined portions for measuring the first and second surface densities used for calculating the filling surface density representative value are within the predetermined width orthogonal range at each predetermined width direction interval in the width direction. What is necessary is just to select a position. That is, the position of each predetermined portion is allowed to vary within a predetermined width orthogonal range in a direction (longitudinal direction) orthogonal to the width direction of the core material. On the other hand, the width direction is set at every predetermined width direction interval. As specific arrangement | positioning of each predetermined part, the arrangement | positioning form by which each predetermined part is arrange | positioned for every predetermined width direction space | interval on the virtual straight line extended in the width direction is mentioned. Further, each predetermined portion is gradually shifted in a direction orthogonal to the width direction from one end edge side to the other end edge side in the width direction within a predetermined width orthogonal range in a direction (longitudinal direction) orthogonal to the width direction. It can also be set as the arrangement form arranged so that it may be arranged on a slanting straight line. Furthermore, it is also possible to adopt an arrangement configuration in which each predetermined portion is arranged in a zigzag shape when viewed in the width direction within a predetermined width orthogonal range in a direction (longitudinal direction) orthogonal to the width direction. it can.

  Further, the first surface density at each predetermined portion can be simultaneously measured in parallel using a plurality of surface density measuring means. Moreover, it can also measure in order, moving one or several surface density measuring means to the width direction. In the latter case, the measurement takes time, but it is not necessary to prepare many surface density measuring means such as an X-ray surface density meter. Similarly, the second surface density can also be measured in parallel by a plurality of surface density measuring means, and can also be measured sequentially while moving one or more surface density measuring means.

Furthermore, as a method for calculating the filling surface density representative value, it is preferable to use a calculation formula in which the filling surface density representative value is an appropriate value representing the filling surface density at various places in the predetermined width orthogonal range. For example, specifically, the filling surface density representative value includes an average value of the filling surface density of the active material paste obtained for a plurality of predetermined portions. When the average value of each filling surface density is used as the filling surface density representative value, even if the measured first and second surface density values include sudden abnormal values due to noise or the like, other normal values Therefore, it is possible to suppress the abnormal value from greatly affecting the removal amount. In addition, the average value of the remaining filling surface density values can be used by removing the maximum value and the minimum value from the plurality of filling surface densities within the predetermined width orthogonal range.
In calculating the filling surface density representative value, a plurality of filling surface densities are once calculated from the corresponding first surface density and second surface density, and the filling surface density representative value is calculated from the filling surface density. Alternatively, a large number of first surface densities and second surface densities may be processed to directly calculate the filling surface density representative value.

  Further, in the method for manufacturing the battery electrode plate, the first surface density measurement step includes moving the first surface density measuring means movable in the width direction of the core material in the width direction, The first surface density is measured for each of the plurality of predetermined portions, and the second surface density measurement step moves a second surface density measuring means movable in the width direction of the core material in the width direction. Thus, it is preferable that the battery electrode plate manufacturing method measures the second surface density for each of the plurality of predetermined portions or the vicinity thereof.

In the present invention, in the first surface density measurement step, the first surface density measuring means movable in the width direction is moved in the width direction to measure the first surface density of a plurality of predetermined portions. For this reason, a moving mechanism for the first surface density measuring means is required as compared with the case where the first surface density of the plurality of predetermined portions is measured by the plurality of fixed first surface density measuring means. A small number of first surface density measuring means is sufficient.
When an expensive device such as an X-ray surface density meter is used as the first surface density measuring means, the cost of the first surface density measuring step can be suppressed.
Also in the second surface density measurement step, the second surface density measuring means movable in the width direction is moved in the width direction to measure the second surface density of a plurality of predetermined portions. Therefore, as described above, one or a small number of second surface density measuring means is sufficient, and when an expensive device such as an X-ray surface density meter is used as the second surface density measuring means, the second surface density is measured. The cost of the measurement process can be suppressed.
The number of the first surface density measuring means that can move in the width direction can be one or more. For example, specifically, two first surface density measuring means are used, arranged on both sides with respect to the center in the width direction of the core material, and one end edge side from the center and the other end edge side from the center are measured separately. The technique to do is mentioned.

  Moreover, it is a manufacturing method of the electrode plate for batteries as described in any one of the above-mentioned, Comprising: Adjustment of the removal amount of the said active material paste is several in the position which is different regarding the direction orthogonal to the said width direction, or a longitudinal direction. Performing by using the first surface density and the second surface density applied to each of the predetermined portions, or in each of the plurality of predetermined width orthogonal ranges at different positions with respect to the direction orthogonal to the width direction or the longitudinal direction, A method for manufacturing a battery electrode plate using the filling surface density representative value is preferable.

In the method for manufacturing a battery electrode plate according to the present invention, the first surface density and the second surface density are applied to each of a plurality of predetermined portions at different positions with respect to the direction orthogonal to the width direction or the longitudinal direction. It is done using. Alternatively, the filling surface density representative value in each of a plurality of predetermined width orthogonal ranges at different positions in the direction orthogonal to the width direction or the longitudinal direction is used.
Thus, by obtaining the first surface density and the second surface density applied to each of the plurality of predetermined portions at different positions in the direction orthogonal to the width direction or the longitudinal direction, the direction in the direction orthogonal to the width direction or the longitudinal direction is obtained. Since the fluctuation of the filling surface density of the active material paste can be known, it is possible to adjust an appropriate removal amount by using these.
Moreover, the filling surface density of the active material paste in the direction orthogonal to the width direction or in the longitudinal direction can also be obtained by obtaining a representative value of the filling surface density in a plurality of predetermined width orthogonal ranges at different positions with respect to the direction orthogonal to the width direction or the longitudinal direction. Therefore, it is possible to adjust the removal amount appropriately by using these.

  The removal is performed by using the first and second surface densities of a plurality of predetermined portions at different positions in the direction orthogonal to the width direction or the longitudinal direction, or representative values of the filling surface densities in a plurality of predetermined width orthogonal ranges. In adjusting the amount, for example, a processing value such as a moving average value, an integral value, or a differential value is calculated using a plurality of filling surface density representative values, and this processing value can be used. By using such processing values, it is possible to perform appropriate feedback control according to the characteristics of the control system in the production of the battery electrode plate.

  For example, by using a moving average value or an integral value of the filling surface density representative value, even if an abnormal value is included in the basic filling surface density representative value, the influence can be suppressed. In addition, the removal amount can be gradually changed while avoiding a sudden change in the removal amount in the removal step. Then, the surface density of the active material paste gradually approaches a predetermined value. Thereby, the divergence of removal amount control can also be prevented.

  Moreover, it is a manufacturing method of said battery electrode board, Comprising: It is a manufacturing method of the battery electrode board of Claim 5, Comprising: Adjustment of the removal amount of the said active material paste is a direction orthogonal to the said width direction. Alternatively, for a plurality of the predetermined portions at different positions in the longitudinal direction, the filling surface density at the predetermined portion calculated from the first surface density and the second surface density corresponding to each other is used, and the moving average value obtained thereby is calculated. Using the filling surface density representative values in a plurality of predetermined width orthogonal ranges at different positions with respect to the direction perpendicular to the width direction or the longitudinal direction, and using the moving average value obtained from these It is preferable if it is the manufacturing method of the electrode plate for batteries to perform.

  In this method of manufacturing a battery electrode plate, the removal amount is adjusted by using a moving average value for the filling surface density at a plurality of predetermined portions at different positions in the direction orthogonal to the width direction or in the longitudinal direction. Alternatively, the removal amount is adjusted using the moving average value for the filling surface density representative values in a plurality of predetermined width orthogonal ranges at different positions in the direction orthogonal to the width direction or the longitudinal direction. Thus, when using a moving average value, calculation and processing are easy.

  Another solution is a method for manufacturing a battery electrode plate in which a long flat core material is filled with an active material, which is relatively conveyed in the longitudinal direction along one end edge and the other end edge of the battery. With respect to the core material, one end-side predetermined portion located on one edge side of the center as viewed in the width direction of the core material perpendicular to the longitudinal direction within a predetermined longitudinal range in the longitudinal direction, and other than the center First surface density measurement for measuring one end-side first surface density at the one end-side predetermined portion and the other end-side first surface density at the other end-side predetermined portion with respect to the other end-side predetermined portion located on the end side. A filling step of filling a predetermined amount of the active material paste into the core material measured for the one end side first surface density and the other end side first surface density to form a paste-filled core material, and the paste filling A scraping roll over the entire width of the finished core material The removal step of removing a part of the filled active material paste and the paste-filled core material from which a part of the active material paste has been removed, the one end side second surface density at the one end side predetermined portion or the vicinity thereof And a second surface density measuring step for measuring the second surface density on the other end side in the predetermined portion on the other end side or in the vicinity thereof, and the one end side first surface density and the one end side second surface density. The filling surface density of the active material paste is equal on the one end edge side and the other end edge side from the center in the width direction using the other end side first surface density and the other end side second surface density. And a manufacturing method of a battery electrode plate for adjusting an inclination of an axis of the scraping roll with respect to the core material.

  The filling surface density of the active material paste filled in the core material may vary in the width direction. As an example, there is a form in which the surface density of the filling amount paste gradually increases or decreases from one end edge side in the width direction toward the other end edge side. This is because the width of the nozzle for spraying and filling the active material paste is gradually changing in the width direction, or the axis of the scraping roll used in the removing process is inclined with respect to the core material. It happens in some cases. Further, even if the surface density of the core material itself is gradually changed in the width direction, it occurs.

On the other hand, in the manufacturing method of the battery electrode plate of the present invention, the one end-side first surface density and the one end-side second surface density of the one end side predetermined portion on the one end edge side with respect to the width direction center of the core material are different from each other. The other end side first surface density and the other end side second surface density are measured for the other end side predetermined portion on the edge side. In the removing step, the active material paste is removed by a scraping roll. And the filling surface density of the active material paste is determined in the width direction of the core material using the one end side first surface density, the one end side second surface density, the other end side first surface density, and the other end side second surface density. The inclination of the axis of the scraping roll in the removing step with respect to the core material is adjusted so that the one end edge side and the other end edge side are equal from the center.
Thereby, even if the filling surface density of the active material paste is different between the one end edge side and the other end edge side from the center in the width direction with respect to the core material with the paste filled, with respect to the core material of the axis of the scraping roll By adjusting the inclination, thereafter, the difference in the filling surface density of the active material paste between the one end edge side and the other end edge side is eliminated.

  In order to incline the axis of the scraping roll with respect to the core material, a method of inclining the axis line by changing the distance between the one end edge side portion and the core material in the axis of the scraping roll can be cited. In addition, among the axis lines of the scraping roll, the distance between the one end edge side portion and the core material and the distance between the other end edge side portion of the axis line and the core material are changed in directions opposite to each other. You can also take a tilting technique.

  Moreover, it is a manufacturing method of said electrode plate for batteries, Comprising: A said 1st surface density measurement process is in the predetermined longitudinal range about the said longitudinal direction among the said core materials, And the width direction of the said core material And measuring the one end-side first surface density at each of the plurality of one-end-side predetermined portions located at intervals of the first width direction in the width direction within the range of the one end edge side from the center of the center, and the core Among the materials, the material is located at every second width direction interval in the width direction within the predetermined range in the longitudinal direction and within the range on the other end edge side from the center in the width direction of the core material. The other end side first surface density is measured in each of the plurality of other end side predetermined portions, and the second surface density measurement step is performed at one end side in each of the plurality of one end side predetermined portions or in the vicinity thereof. Measure the second surface density In each of the plurality of predetermined portions on the other end side or in the vicinity thereof, the second surface density on the other end side is measured, and adjustment of the inclination of the axis of the scraping roll with respect to the core material is within the predetermined longitudinal range. And the predetermined longitudinal length calculated using the one end-side first surface density and the one end-side second surface density applied to the plurality of one-end-side predetermined portions in a range closer to the one-end edge than the center in the width direction of the core material. In the range, the one end side filling surface density representative value regarding the one end side filling surface density in the range on the one end edge side than the center in the width direction of the core material, and the width direction of the core material within the predetermined longitudinal range The core within the predetermined longitudinal range, calculated using the other end-side first surface density and the other end-side second surface density of the plurality of other end-side predetermined portions within the range of the other end edge side from the center of the center. Other than the center in the width direction of the material In the range of edge, may the method for producing a battery plate performed using other end packing surface density representative value for a plurality of said other end packing surface density.

In the manufacturing method of the battery electrode plate of the present invention, the one end side filling surface density representative value of the active material paste calculated by using each one end side first surface density and one end side second surface density, and each other end side The inclination of the axis of the scraping roll with respect to the core material is adjusted using the representative value of the filling surface density on the other end side of the active material paste calculated using the first surface density and the second surface density on the other end side.
When this manufacturing method is used, the measured value of the first surface density on the one end side, the second surface density on the one end side, the first surface density on the other end side, or the second surface density on the other end side is suddenly affected by noise or the like. Even if an abnormal value is included, by using the one end side filling surface density representative value or the other end side filling surface density representative value calculated so as to suppress the influence of the abnormal value such as by removing this or averaging it, Inappropriate fluctuations in the inclination of the scraping roll due to the influence of such abnormal values can be suppressed.

  In addition, as a method of calculating one end side and the other end side filling surface density representative value, specifically, for example, one end side first surface density and each of a plurality of one end side predetermined portions (or portions in the vicinity thereof) There is a method of obtaining one end side filling surface density of the active material paste from the one end side second surface density, and further obtaining an average value of the one end side filling surface density for a plurality of one end side predetermined portions. Moreover, the average value of the value which remove | eliminated the maximum value and the minimum value of several one end side filling surface density can also be used as a one end side filling surface density representative value.

As the arrangement (arrangement) of the plurality of one-end-side predetermined portions in the measurement of the one-end-side first surface density, each one-end-side predetermined portion is within a predetermined longitudinal range with respect to the longitudinal direction of the core material and is first in the width direction. What is necessary is just the arrangement | positioning located for every width direction space | interval. That is, each of the one end side predetermined portions is allowed to vary in position within a predetermined longitudinal range in the longitudinal direction of the core material, while in the width direction, it is located for each one end side first width direction. Specifically, there is an arrangement form in which one end side predetermined portion is arranged for each first width direction interval on a virtual straight line extending in the width direction. Further, there is an arrangement form in which the predetermined portion on one end side is gradually shifted in the longitudinal direction and arranged in an oblique line within the predetermined longitudinal range in the longitudinal direction from the one end edge side in the width direction of the core toward the center. It is done. In addition, it can also be set as the arrangement | positioning form arrange | positioned so that each one end side predetermined site | part may be located in a staggered pattern seeing in the width direction within a predetermined longitudinal range about a longitudinal direction.
In addition, in the measurement of the other end side first surface density, the arrangement (arrangement) of the plurality of other end side predetermined portions is the same as described above, and the arrangement on the imaginary straight line extending in the width direction and the predetermined longitudinal range in the longitudinal direction An arrangement in which the other end side predetermined portion is gradually shifted in the longitudinal direction in the inside, or an arrangement in which the other end side predetermined portion is arranged in a staggered manner in the width direction within the predetermined longitudinal range in the longitudinal direction.
The arrangement of the one end side predetermined portion and the other end side predetermined portion may be the same arrangement on the one end edge side and the other end edge side, or may be arranged separately from each other.
Furthermore, the measurement of the one end side first surface density, the one end side second surface density, the other end side first surface density, and the other end side second surface density at each of the one end side predetermined portion and the other end side predetermined portion is a plurality. These measurement means may be used to measure at a time, or the respective surface densities may be measured while moving the measurement means in the width direction.
Further, the one end side first surface density and the other end side first surface density are measured for each of the first width direction interval and the second width direction interval in the width direction. The second width direction interval may be equal or different.

  Further, in the method for manufacturing the battery electrode plate, the first surface density measurement step includes moving one end side first surface density measuring means movable in the width direction of the core material in the width direction. Then, the one end side first surface density is measured for each of the plurality of one end side predetermined portions, and the other end side first surface density measuring means movable in the width direction of the core member is moved in the width direction. Then, the other end side first surface density is measured for each of the plurality of other end side predetermined portions, and the second surface density measuring step is one end side second surface movable in the width direction of the core member. The density measuring means is moved in the width direction to measure the one end-side second surface density for each of the plurality of one end-side predetermined portions or the vicinity thereof, and is movable in the width direction of the core member. Moving the end-side second surface density measuring means in the width direction, the plurality of other ends Predetermined portion or may be a method for producing a battery plate to measure the other end second surface density for each of the neighboring sites.

In the present invention, in the first surface density measuring step, the one end-side first surface density measuring means and the other end-side first surface density measuring means are moved in the width direction, so that the one end-side first surface density and the other end-side first. The areal density is measured. Similarly, in the second surface density measurement step, the one end-side second surface density measuring means and the other end-side second surface density measuring means are moved in the width direction, and the one end-side second surface density and the other end-side are moved. The second areal density is measured.
For this reason, the number of first and second surface density measuring means can be reduced as compared with the case where a plurality of portions are simultaneously measured by a plurality of fixed first and second surface density measuring means. Therefore, the cost of the first and second surface density measurement steps can be suppressed.
The one end-side first surface density measuring means and the other end-side first surface density measuring means may be separate surface density measuring means, or the same surface density measuring means may be shared. Similarly, the one end-side second surface density measuring means and the other end-side second surface density measuring means may be separate surface density measuring means, or the same surface density measuring means may be shared.

  Moreover, it is a manufacturing method of the battery electrode plate as described in any one of Claims 6-8, Comprising: Adjustment of the inclination with respect to the said core material of the axis line of the said scraping roll differs in the said longitudinal direction The one end-side first surface density and the one end-side second surface density applied to the one end-side predetermined portion, and the other end-side first surface applied to the other end-side predetermined portion in each of the plurality of predetermined longitudinal ranges. The one end side filling surface density representative value and the other end side filling surface in each of the plurality of the predetermined longitudinal ranges at a different position with respect to the longitudinal direction. The density representative value may be used as a method for manufacturing a battery electrode plate.

In the manufacturing method of the electrode plate for a battery according to the present invention, the inclination of the axis of the scraping roll is adjusted at one end-side first surface density at one end-side predetermined portion in each of a plurality of predetermined longitudinal ranges at different positions in the longitudinal direction. And the one end side second surface density and the other end side first surface density and the other end side second surface density applied to the other end side predetermined portion. Alternatively, it is performed using the one end side filling surface density representative value and the other end side filling surface density representative value in each of a plurality of predetermined longitudinal ranges.
Thus, by obtaining one end side first surface density and one end side second surface density and the other end side first surface density and the other end side second surface density in each of a plurality of predetermined longitudinal ranges, or By obtaining the representative value of the one end side filling surface density and the representative value of the other end side filling surface density, it is possible to know the fluctuation of the one end side filling surface density and the other end side filling surface density of the active material paste in the longitudinal direction. Therefore, by using these, it is possible to adjust the inclination of the scraping roll appropriately.
In addition, when adjusting the inclination by using one end side first surface density in a plurality of predetermined longitudinal ranges, or one end side filling surface density representative value or the other end side filling surface density representative value, for example, one end side filling Using the surface density representative value, a processing value such as a moving average value, an integral value or a differential value is calculated, and this processing value can be used. By using such processing values, it is possible to perform appropriate feedback control according to the characteristics of the control system in the production of the battery electrode plate.

  For example, if the moving average value or integral value of the one end side filling surface density representative value is used, even if an abnormal value is included in the one end side filling surface density representative value, the slope of the axis of the scraping roll is abrupt. The balance of the removal amount on the one end edge side and the other end edge side from the center of the core material can be gradually changed. Thereby, the divergence of the inclination control of the scraping roll can be prevented.

  Further, in the battery electrode manufacturing method described above, the adjustment of the inclination of the axis of the scraping roll with respect to the core material corresponds to each other at a plurality of the one end side predetermined portions at different positions with respect to the longitudinal direction. The one end side moving surface average value obtained from the one end side predetermined surface density calculated from the one end side first surface density and the one end side second surface density is different from the one end side moving average value obtained in the above in the longitudinal direction. The other end-side filling surface density at the other end-side predetermined portion calculated from the other end-side first surface density and the other end-side second surface density corresponding to each other is used for the plurality of the other end-side predetermined portions. The other end side moving average value obtained by these, or each of the one end side filling surface density representative values in a plurality of predetermined longitudinal ranges at different positions with respect to the longitudinal direction The one end side moving average value obtained from these and the other end side moving average value obtained from each of the other end side filling surface density representative values in the plurality of predetermined longitudinal ranges are used. It is preferable if it is the manufacturing method of the electrode plate for batteries.

  In this battery electrode manufacturing method, one end side moving average density and other end side filling surface density or one end side filling surface density representative value and other end side filling surface density representative value and other end side filling surface density representative value are calculated. The end side moving average value is calculated, and the inclination of the axis of the scraping roll is adjusted. Such one end side moving average value and the other end side moving average value are easy to calculate and process.

  Another solution is a method for manufacturing a battery electrode plate in which a long flat core material is filled with an active material, which is relatively conveyed in the longitudinal direction along one end edge and the other end edge of the battery. One end-side first surface at one end-side predetermined portion located on one end edge side from the center when viewed in the width direction of the core member orthogonal to the longitudinal direction within a predetermined longitudinal range in the longitudinal direction. A first surface density measuring step of measuring the other end side first surface density at the other end side predetermined site located on the other end edge side than the center, and the one end side first surface density and the other end side first. The core material whose surface density is measured is filled with a predetermined amount of active material paste to form a paste-filled core material, and the entire width in the width direction of the paste-filled core material is scraped by a scraping roll. , Removal work to remove part of the filled active material paste in the width direction And the paste-filled core material from which a part of the active material paste has been removed, the one end side second surface density at the one end side predetermined portion or the vicinity thereof, and the other end side predetermined portion or the vicinity thereof. A second surface density measurement step of measuring the other end side second surface density, the one end side first surface density, the one end side second surface density, the other end side first surface density, and the other end. Using the second side surface density, the removal amount of the active material paste in the removing step is adjusted by the rotation speed of the scraping roll so that the filling surface density of the active material paste becomes a predetermined value, and the active material paste This is a method for manufacturing a battery electrode plate in which the inclination of the axis of the scraping roll with respect to the core material is adjusted so that the filling surface density is equal on the one end edge side and the other end edge side with respect to the center in the width direction.

In the manufacturing method of the battery electrode plate of the present invention, filling of the active material paste is performed using the first surface density at one end, the second surface density at one end, the first surface density at the other end, and the second surface density at the other end. The removal rate of the active material paste is adjusted so that the surface density becomes a predetermined value, and the rotational speed of the roll is adjusted, and the filling surface density is equal between the one end edge side and the other end edge side from the center in the width direction. As described above, the inclination of the axis of the scraping roll with respect to the core material is adjusted. Therefore, according to this manufacturing method, it is possible to manufacture a battery electrode plate having a uniform filling surface density and an optimum value both in the width direction and in the longitudinal direction of the core material.
In addition, adjustment of the rotational speed in the above-mentioned scraping roll and adjustment of the inclination of the axis line of the scraping roll with respect to the core material can be performed simultaneously as needed, or only one can be performed.

  Further, in the method for manufacturing the battery electrode plate, the core material is within a predetermined longitudinal range in the longitudinal direction, and is in a range on the one end edge side from the center in the width direction of the core material. And measuring the one end side first surface density in each of the plurality of one end side predetermined portions located at intervals of the first width direction with respect to the width direction, and among the core material, the above in the longitudinal direction. Within the predetermined range and within the range on the other end edge side with respect to the center in the width direction of the core material, a plurality of the other end side predetermined portions positioned at every second width direction interval in the width direction. In each, the other end side first surface density is measured, and the second surface density measuring step measures the one end side second surface density in each of the plurality of one end side predetermined portions or the vicinity thereof, The plurality of other end sides The other end side second surface density is measured at each of the parts or the vicinity thereof, and the adjustment of the removal amount of the active material paste is performed by adjusting the one end side first of the plurality of one end side predetermined parts in the predetermined longitudinal range. The surface density and the one end side second surface density were used, and the other end side first surface density and the other end side second surface density applied to the plurality of other end side predetermined portions in the predetermined longitudinal range were calculated. The adjustment of the inclination of the axis of the scraping roll with respect to the core material in the predetermined longitudinal range is performed within the predetermined longitudinal range and the core material. Above the predetermined longitudinal range calculated using the one end side first surface density and the one end side second surface density of each of the plurality of one end side predetermined portions within the range of the one end edge side from the center in the width direction of One end-side filling surface density representative value for the one end-side filling surface density in a range closer to one end edge than the center in the width direction of the core material, and within the predetermined longitudinal range and from the center in the width direction of the core material The width of the core material in the predetermined longitudinal range calculated using the other end side first surface density and the other end side second surface density of the plurality of other end side predetermined portions in the range of the other end edge side. It is preferable to use a method for manufacturing a battery electrode plate using a plurality of other end side filling surface density representative values related to the other end side filling surface density in a range closer to the other end edge than the center in the direction.

In the method for manufacturing a battery electrode plate according to the present invention, the first and second surface density measurement steps are performed within a predetermined longitudinal range in the longitudinal direction, and in the width direction, each width direction interval (first width direction interval, second width direction). Each surface density (one end side first surface density, one end side second surface density, the other end side first surface density) in each of a plurality of predetermined portions (one end side predetermined portion, the other end side predetermined portion) located at each interval) The other end side second surface density) is measured. Further, each end surface density (one end side first surface density, one end side second surface density) and the other end side each surface density (the other end side first surface density, the other end side second surface density) are used. Thus, the filling surface density representative value of the active material paste in a predetermined longitudinal range is calculated, and the removal amount of the active material paste is adjusted using this.
For this reason, even if a sudden abnormal value due to the influence of noise or the like is included in each measured surface density (first surface density at one end, etc.), the effect of the abnormal value such as by removing this or averaging By using the filling surface density representative value calculated in such a manner as to suppress the above, it is possible to suppress an inappropriate variation in the removal amount of the active material paste due to the influence of such an abnormal value. For example, in calculating the filling surface density representative value, the filling surface density at each of a plurality of predetermined sites is calculated using the above-mentioned one end side surface density and the other end side surface density, and the average value of these is calculated as the filling surface density. In the case of the representative value, the filling surface density representative value is a value averaged over the width direction within a predetermined longitudinal range. Therefore, even when a sudden abnormal value is included in each measured surface density value due to noise or the like, the influence of the abnormal value can be suppressed.

Further, in the present invention, one end side filling surface density representative calculated using one end side surface density (one end side first surface density, one end side second surface density) in a plurality of one end side predetermined sites (or its vicinity). The other end-side filling surface calculated using the values and the other end-side surface densities (the other end-side first surface density and the other end-side second surface density) of a plurality of other end-side predetermined portions (or the vicinity thereof). Using the representative density value, the inclination of the axis of the scraping roll with respect to the core material is adjusted.
For this reason, even if a sudden abnormal value due to the influence of noise or the like is included in each measured surface density (first surface density at one end, etc.), the effect of the abnormal value such as by removing this or averaging By using the one-end-side filling surface density representative value and the other-end-side filling surface density representative value calculated so as to suppress the above, it is possible to suppress inappropriate fluctuations in the inclination of the scraping roll due to the influence of such an abnormal value. . For example, in calculating one end side filling surface density representative value, the filling surface density of the active material paste at a plurality of predetermined positions on one end side is calculated using one end side surface density, and the average value of these is calculated as one end side filling surface density. As a representative value, the other end side filling surface density representative value is calculated in the same manner. When these values are used, even if a sudden abnormal value is included due to the influence of noise or the like in each surface density value such as the measured one-side first surface density, the influence of this abnormal value can be suppressed.

  As the arrangement (arrangement) of the plurality of one-end-side predetermined portions and the other-end-side predetermined portions, the first width direction interval or the second width as viewed in the width direction within the predetermined longitudinal range in the longitudinal direction, as in the case described above. What is necessary is just to be located for every direction space | interval. Accordingly, if one end side predetermined portion and the other end side predetermined portion are arranged in the width direction as long as they are within the predetermined longitudinal range in the longitudinal direction and are arranged at intervals of the first width direction interval or the second width direction interval in the width direction. And arranged in a straight line, in a staggered manner, or in an arrangement form that is gradually shifted in the longitudinal direction from one end edge side to the other end edge side of the core material on an oblique straight line, etc. can do.

  Further, in the method for manufacturing the battery electrode plate, the first surface density measurement step includes moving one end side first surface density measuring means movable in the width direction of the core material in the width direction. Then, the one end side first surface density is measured for each of the plurality of one end side predetermined portions, and the other end side first surface density measuring means movable in the width direction of the core member is moved in the width direction. Then, the other end side first surface density is measured for each of the plurality of other end side predetermined portions, and the second surface density measuring step is one end side second surface movable in the width direction of the core member. The density measuring means is moved in the width direction to measure the one end-side second surface density for each of the plurality of one end-side predetermined portions or the vicinity thereof, and is movable in the width direction of the core member. Moving the end-side second surface density measuring means in the width direction, the plurality of other ends Predetermined portion or may be a method for producing a battery plate to measure the other end second surface density for each of the neighboring sites.

In the present invention, in the first surface density measuring step, the one end-side first surface density measuring means and the other end-side first surface density measuring means are moved in the width direction, so that the one end-side first surface density and the other end-side first. The areal density is measured. Similarly, in the second surface density measurement step, the one end-side second surface density measuring means and the other end-side second surface density measuring means are moved in the width direction, and the one end-side second surface density and the other end-side are moved. The second areal density is measured.
For this reason, the number of first and second surface density measuring means can be reduced as compared with the case where a plurality of portions are simultaneously measured by a plurality of fixed first and second surface density measuring means. Therefore, the cost of the first and second surface density measurement steps can be suppressed.
The one end-side first surface density measuring means and the other end-side first surface density measuring means may be separate surface density measuring means, or the same surface density measuring means may be shared. Similarly to the above, the one end side second surface density measuring means and the other end side second surface density measuring means may be separate surface density measuring means, or the same surface density measuring means may be shared. good.

  Moreover, it is a manufacturing method of the electrode plate for batteries as described in any one of Claims 10-12, Comprising: Adjustment of the removal amount of the said active material paste is a plurality of said in a different position regarding the said longitudinal direction. In each of the predetermined longitudinal ranges, the one end side first surface density and the one end side second surface density applied to the one end side predetermined portion, and the other end side first surface density and the other end side applied to the other end side predetermined portion. A method of manufacturing a battery electrode plate using the second surface density, or using the filling surface density representative value in each of the plurality of predetermined longitudinal ranges at different positions in the longitudinal direction. good.

In the method for manufacturing an electrode plate for a battery according to the present invention, the removal amount of the active material paste is adjusted by adjusting one end-side first surface density applied to one end-side predetermined portion in each of a plurality of predetermined longitudinal ranges at different positions in the longitudinal direction. And the one end side second surface density and the other end side first surface density and the other end side second surface density applied to the other end side predetermined portion. Alternatively, the filling surface density representative value in each of a plurality of predetermined longitudinal ranges is used.
Thus, by obtaining the first end side first surface density and the one end side second surface density and the other end side first surface density and the other end side second surface density in each of the plurality of predetermined longitudinal ranges, or By obtaining the filling surface density representative value in each of a plurality of predetermined longitudinal ranges, it is possible to know the variation in the filling surface density of the active material paste in the longitudinal direction. By using these, the removal amount of the active material paste Can be adjusted appropriately.
In adjusting the removal amount using the first surface density at one end in a plurality of predetermined longitudinal ranges, or the representative value of the filling surface density, for example, the movement using the representative value of the filling surface density is performed. A processing value such as an average value, an integral value, or a differential value is calculated, and this processing value can be used. By using such processing values, it is possible to perform appropriate feedback control according to the characteristics of the control system in the production of the battery electrode plate.

  For example, by using a moving average value or an integral value of the filling surface density representative value, even if an abnormal value is included in the basic filling surface density representative value, the removal amount in the removal process can be rapidly changed. The removal amount can be gradually changed. Thereby, the divergence of the removal amount control can be prevented.

  Moreover, it is a manufacturing method of the electrode plate for batteries as described in any one of Claims 10-13, Comprising: Adjustment of the inclination with respect to the said core material of the axis line of the said scraping roll differs in the said longitudinal direction The one end-side first surface density and the one end-side second surface density applied to the one end-side predetermined portion, and the other end-side first surface applied to the other end-side predetermined portion in each of the plurality of predetermined longitudinal ranges. The one end side filling surface density representative value and the other end side filling surface in each of the plurality of the predetermined longitudinal ranges at a different position with respect to the longitudinal direction. The density representative value may be used as a method for manufacturing a battery electrode plate.

In the manufacturing method of the electrode plate for a battery according to the present invention, the inclination of the axis of the scraping roll is adjusted at one end-side first surface density at one end-side predetermined portion in each of a plurality of predetermined longitudinal ranges at different positions in the longitudinal direction. And the one end side second surface density and the other end side first surface density and the other end side second surface density applied to the other end side predetermined portion. Alternatively, it is performed using the one end side filling surface density representative value and the other end side filling surface density representative value in each of a plurality of predetermined longitudinal ranges.
Thus, by obtaining one end side first surface density and one end side second surface density and the other end side first surface density and the other end side second surface density in each of a plurality of predetermined longitudinal ranges, or By obtaining the representative value of the one end side filling surface density and the representative value of the other end side filling surface density, it is possible to know the fluctuation of the one end side filling surface density and the other end side filling surface density of the active material paste in the longitudinal direction. Therefore, by using these, it is possible to adjust the inclination of the scraping roll appropriately.
In addition, when adjusting the inclination by using one end side first surface density in a plurality of predetermined longitudinal ranges, or one end side filling surface density representative value or the other end side filling surface density representative value, for example, one end side filling Using the surface density representative value, a processing value such as a moving average value, an integral value or a differential value is calculated, and this processing value can be used. By using such processing values, it is possible to perform appropriate feedback control according to the characteristics of the control system in the production of the battery electrode plate.

  For example, if the moving average value or integral value of the one end side filling surface density representative value is used, even if an abnormal value is included in the one end side filling surface density representative value, the slope of the axis of the scraping roll is abrupt. The balance of the removal amount on the one end edge side and the other end edge side from the center of the core material can be gradually changed. Thereby, the divergence of the inclination control of the scraping roll can be prevented.

  Another solution is an apparatus for manufacturing a battery electrode plate in which a flat core material is filled with an active material, wherein the first surface density is measured at a first surface density at a predetermined portion of the core material. A measuring means, a filling means for filling the core material measured for the first surface density with a predetermined amount of active material paste to form a paste-filled core material, and a full width in the width direction of the paste-filled core material The removal means for removing a part of the filled active material paste in the width direction, and the paste-filled core material from which a part of the active material paste has been removed, the second surface at the predetermined part or its vicinity. The second surface density measuring means for measuring the density, and the removal of the active material paste in the removing means so that the filling surface density of the active material paste calculated from the first surface density and the second surface density becomes a predetermined value. Removal amount adjusting means for adjusting the amount An apparatus for manufacturing a battery electrode plate comprising a.

The battery electrode plate manufacturing apparatus of the present invention includes a first surface density measuring means for measuring a first surface density, a filling means for filling an active material paste, and a removing means for removing a part of the filled active material paste. Including. The paste-filled core material from which a part of the active material paste has been removed includes a second surface density measuring means for measuring a second surface density. The manufacturing apparatus further includes a removal amount adjusting unit that adjusts the removal amount of the active material paste in the removing unit so that the filling surface density of the active material paste becomes a predetermined value.
Therefore, according to the battery electrode plate manufacturing apparatus of the present invention, the first surface density and the second surface density are measured, and using these, the filling surface density of the active material paste is a predetermined value (target value). Thus, the removal amount of the active material paste in the removing means is adjusted so that a battery electrode plate filled with an appropriate amount of the active material paste can be manufactured.

  The filling means may be any means that can fill the core material with the active material paste with a predetermined surface density. For example, an apparatus including a nozzle that sprays an active material paste toward a filling surface of the core material to fill the core material, an apparatus that transfers and fills the active material paste to the core material via a roller, and the like can be given.

  Moreover, the 1st, 2nd surface density measuring means should just measure the surface density in a predetermined site | part or its vicinity site | part about a core material or a paste filling core material. For example, there is an apparatus including an X-ray area density meter that obtains an areal density by irradiating a core material or the like and measuring a transmission amount thereof to obtain a weight of a substance included in the irradiation range. The first surface density measuring means and the second surface density measuring means are preferably the same type of measuring means for measuring the surface density by the same measuring method. This is because the deviation of the surface density value due to the difference in measurement technique is unlikely to occur.

  Further, the removing means may be any means that can remove a part of the already filled active material paste over the entire width of the core material. For example, a blade that removes a part of the active material paste by scraping off the active material paste by pressing the blade edge against the surface of the core material filled with the active material paste (filling surface) over the entire width in the width direction. And a device including a scraping roll that rotates while pressing the outer peripheral surface of the roller against the filling surface over the entire width in the width direction of the core material to remove a part of the active material paste.

  Further, the removal amount adjusting means may be any means that can adjust the removal amount of the active material paste by the removing means according to the structure of the removing means. For example, when removing a part of the active material paste filled in the core material with a blade as the removing means, there is a blade position adjusting means for adjusting the blade position with respect to the paste-filled core material according to the removal amount. When removing the active material paste with a scraping roll as a removing means, a means for adjusting the position of the outer peripheral surface of the scraping roll with respect to the core material according to the removal amount, or a rotation of the scraping roll Examples thereof include roll rotation speed adjusting means for adjusting the speed.

  Further, in the battery electrode manufacturing apparatus described above, the core material is a long plate-shaped core material that is relatively transported in a longitudinal direction orthogonal to the width direction, and the removing unit includes: The battery electrode includes a scraping roll for removing the active material paste over the entire width in the width direction, and the removal amount adjusting means adjusts the removal amount of the active material paste by changing the rotation speed of the scraping roll. It is preferable to use a plate manufacturing apparatus.

In the battery electrode manufacturing apparatus of the present invention, the removing means includes a scraping roll for removing the active material paste. It has been found that the removal amount of the active material paste in the scraping roll is related to the rotation speed of the scraping roll, specifically, the removal amount increases as the rotation speed is increased. Therefore, in this manufacturing apparatus, the removal amount adjusting means adjusts the removal amount of the active material paste by changing the rotation speed of the scraping roll. Therefore, when using the long flat core material relatively conveyed in the longitudinal direction, it can be removed continuously in the longitudinal direction to suitably manufacture the battery electrode plate.
When adjusting the removal amount, investigate the relationship between the rotation speed of the scraping roll and the removal amount of the active material paste in advance, and use this relationship to control the scraping roll appropriately. What is necessary is just to adjust the removal amount of an active material paste.

  Another solution is a battery electrode manufacturing apparatus in which a long flat core material is filled with an active material, which is relatively conveyed in the longitudinal direction along one end edge and the other end edge of itself. With respect to the core material, the one end side predetermined portion of the one end side predetermined portion located on the one end edge side from the center when viewed in the width direction of the core material orthogonal to the longitudinal direction within the predetermined longitudinal range in the longitudinal direction. One end-side first surface density measuring means for measuring one end-side first surface density at the part, and the other end-side predetermined part with respect to the other end-side predetermined part located on the other end side from the center as seen in the width direction. An active material paste is placed on the other end side first surface density measuring means for measuring the other end side first surface density at the site, and the one end side first surface density and the other end side first surface density are measured. Filling means for quantitatively filling to form a paste-filled core material; Removal means for removing a part of the filled active material paste in the width direction by a scraping roll over the entire width of the filled core material, and a paste filling in which a part of the active material paste is removed One end-side second surface density measuring means for measuring one end-side second surface density at the one end-side predetermined portion or the vicinity thereof, and the other end side second at the other end-side predetermined portion or the vicinity thereof. The other end side second surface density measuring means for measuring the two surface density, the one end side first surface density, the one end side second surface density, the other end side first surface density, and the other end side second surface. Using the density, an inclination for adjusting the inclination of the axis of the scraping roll with respect to the core material so that the filling surface density of the active material paste is equal on the one end edge side and the other end edge side with respect to the center in the width direction. A battery electrode plate comprising adjustment means, It is a concrete apparatus.

The battery electrode plate manufacturing apparatus of the present invention includes one end-side first surface density measuring means for measuring one end-side first surface density and the other end-side first surface density measuring means for measuring the other-end-side first surface density. And a filling means for filling the core material with the active material paste, and a removing means for removing a part of the active material paste from the core material filled with the active material paste by the scraping roll. Moreover, about the paste-filled core material from which a part of the active material paste is removed, one end side second surface density measuring means for measuring one end side second surface density and the other end side for measuring the other end side second surface density. Second area density measuring means is included. Further, this manufacturing apparatus uses the above-described first-side first surface density and the like in the removing means so that the filling surface density of the active material paste is equal between the one end edge side and the other end edge side from the center in the width direction. Inclination adjusting means for adjusting the inclination of the axis of the scraping roll with respect to the core material is included.
Therefore, according to this manufacturing apparatus, even if the filling surface density of the active material paste is different between the one end side and the other end side of the center in the width direction, even if the filling surface density of the active material paste is different in the width direction, By adjusting the inclination of the axis of the scraping roll with respect to the core material by the inclination adjusting means, the difference in the filling surface density of the active material paste between the one end edge side and the other end edge side is eliminated, and an appropriate amount of active material is filled in the width direction. The manufactured battery electrode plate can be manufactured.

  The other solving means is the apparatus for manufacturing a battery electrode plate according to claim 17, wherein the one end side first surface density, the one end side second surface density, the other end side first surface density, and the A removal amount adjusting means for adjusting the removal amount of the active material paste by the rotational speed of the scraping roll so that the filling surface density of the active material paste becomes a predetermined value using the second surface density on the other end side. It is an apparatus for manufacturing a battery electrode plate.

  The apparatus for manufacturing a battery electrode plate according to the present invention further uses the first surface density at the one end side to adjust the removal amount of the active material paste in the removal step so that the filling surface density of the active material paste becomes a predetermined value. A removal amount adjusting means for adjusting according to the rotation speed of the scraping roll is included. For this reason, it is possible to easily manufacture an electrode plate for a battery in which an appropriate amount of active material is uniformly filled both in the width direction and in the longitudinal direction.

  Embodiments according to the present invention will be described with reference to the drawings.

Embodiments of the present invention will be described with reference to FIGS.
A battery plate manufacturing apparatus 100 shown in FIG. 1 is a battery in which an active material paste P is filled in a long flat core 1 conveyed in the longitudinal direction NT and dried to manufacture a battery positive plate. This is an electrode plate manufacturing apparatus.

  As shown in FIG. 1, the battery electrode plate manufacturing apparatus 100 according to the present embodiment has a long core material 1 wound in a roll shape in the longitudinal direction NT, specifically, in the transport direction HT ( It is conveyed in the right direction in the figure. As will be described in detail later, the battery electrode plate manufacturing apparatus 100 includes a first surface density measuring device 20 that measures a first surface density W1 of the core material 1, a filling surface 1j side of the core material 1 (in the drawing, An active material paste P is sprayed onto the core material 1 from above, and the core material 1 is filled with the active material paste P at a constant filling surface density. Furthermore, the battery electrode plate manufacturing apparatus 100 is thus provided with a full width in the width direction WT (direction perpendicular to the paper surface in FIG. 1, see FIG. 2) of the paste-filled core material 1P filled with a predetermined amount of the active material paste P. In addition, a scraping device 40 that scrapes and removes part of the active material paste P filled in the paste-filled core material 1P using the upper scraping roll 41 and the lower scraping roll 42 is included. Furthermore, this battery electrode plate manufacturing apparatus 100 uses the second surface density measuring device 50 for measuring the second surface density W2 of the paste-filled core material 1P, and the first and second surface densities W1, W2. And a feedback control device 60 that controls the amount of scraping (the rotational speed N of the scraping rolls 41 and 42) in the scraping device 40. Furthermore, a conveying device (not shown) that conveys the long flat plate-like core material 1 in the longitudinal direction NT, a known thickness adjusting roll 70 that adjusts the thickness of the core material 1 prior to the filling of the active material paste P, and a paste The first and second core material holding rolls 80 and 90 arranged before and after the transport direction HT (longitudinal direction) of the spray device 30 and the paste-filled core material 1P are dried, and the battery electrode plate (active material filling) Finished core material) 1K and horizontal drying furnace 10.

The core material 1 filled with the active material is made of porous foamed nickel that can be filled with an active material paste P (active material) in its pores, and has a long flat plate shape. The core material 1 is manufactured by a known method of forming foamed nickel by depositing nickel on foamed urethane and then removing the foamed urethane by sintering. The core material 1 is used in a state of being wound in a roll shape, and is sequentially drawn out and used.
The active material paste P is mainly made of nickel hydroxide, which is an active material involved in the electromotive reaction of the battery, and a powder in which a cobalt compound for improving discharge efficiency is added is kneaded with water to form a paste. It is a thing.

The first areal density measurement device 20 measures the X-ray dose transmitted through the core material 1 and the first X-ray irradiation device 21 that emits X-rays toward a predetermined region, and the mass per unit area of the core material 1 And a first X-ray surface density meter 22 for measuring (first surface density W1).
In the present embodiment, the first surface density measuring device 20 irradiates X-rays within a diameter of 15 mm and measures the first surface density W1 of the portion. Further, the first surface density measuring device 20 synchronizes the first X-ray irradiation device 21 and the first X-ray surface density meter 22 in the width direction WT in synchronization with the entire width of the core material 1 in the width direction WT. A moving mechanism (not shown) that reciprocates at high speed is included. Therefore, the first surface density measurement device 20 uses the first surface in the plurality of first predetermined portions SB for each predetermined width direction interval WK (see FIG. 2) in the width direction WT with respect to the portion on the plane of the core material 1. The density W1 can be measured sequentially.

Further, the second areal density measuring device 50 has substantially the same configuration as the above-described first areal density measuring device 20. That is, the second areal density measuring device 50 measures the X-ray dose transmitted through the second X-ray irradiation device 51 that emits X-rays toward a predetermined region and the paste-filled core material 1P, and the paste-filled core material. A second X-ray surface density meter 52 that measures the second surface density W2 of 1P is included. The second surface density measuring device 50 also causes the second X-ray irradiation device 51 and the second X-ray surface density meter 52 to reciprocate at a constant speed in synchronism with the width direction WT over the entire width in the width direction WT. The moving mechanism (not shown) is included. Therefore, it is possible to measure the second surface density W2 of a plurality of second predetermined portions SC (see FIG. 2) positioned at every width direction interval WK in the width direction WT.
In the present embodiment, the second predetermined portion SC that is the measurement portion of the second surface density W2 in the second surface density measuring device 50 is related to the portion on the plane of the core material 1 (paste-filled core material 1P). The arrangement of the second surface density measuring device 50 with respect to the first surface density measuring device 20 and the width direction WT so as to coincide with the first predetermined portion SB where the first surface density W1 is measured in the first surface density measuring device 20. The speed and timing of movement are adjusted.

FIG. 2 is an explanatory diagram showing the relationship between the core material 1 (paste-filled core material 1 </ b> P), the first surface density measuring device 20, and the second surface density measuring device 50. The first surface density measuring device 20 indicated by a broken line is the other end from one end edge 1SR (lower edge in the figure) in the width direction WT of the core material 1 conveyed in the conveyance direction HT (right direction in the figure). The first X-ray irradiator 21 and the first X-ray area density meter 22 are each movable in the width direction WT within this range so as to cover up to the edge 1SL (upper edge in the figure). The same applies to the second areal density measuring apparatus 50.
In addition, in a present Example, the part (lower part in a figure) between one end edge 1SR rather than center line CX among core materials 1 is between one end side 1R and center line CX, and the other end edge 1SL. The following description will be made with this portion (the upper portion in the figure) as the other end side portion 1L.

In the battery electrode plate manufacturing apparatus 100 according to the present embodiment, the first X-ray irradiation device 21 and the first X-ray surface density meter 22 of the first surface density measuring device 20 include one end edge 1SR and the other end edge 1SL of the core material 1. Is reciprocating at a constant speed in the width direction WT. Further, the core material 1 is moving at a predetermined transport speed in the transport direction HT. For this reason, when the 1st surface density W1 is measured for every predetermined time interval, among the site | parts on the plane of the core material 1, 1st predetermined site | part SB which measured 1st surface density W1 is expanded and shown in FIG. In this way, the core material 1 is arranged in a dotted pattern on an imaginary straight line in an oblique direction that intersects both the longitudinal direction NT and the width direction WT. Further, the interval between the adjacent first predetermined parts SB is the width direction interval WK when viewed in the width direction WT.
In addition, in the battery electrode plate manufacturing apparatus 100 of the present embodiment, the entire width of the core material 1 is 200 mm, and the 100th position between the one end edge 1SR and the other end edge 1SL of the core material 1 in the width direction WT. There is one predetermined portion SB, and the interval WK in the width direction is WK = 2 mm.

In addition, the second X-ray irradiation device 51 and the second X-ray surface density meter 52 of the second surface density measuring device 50 also include the first X-ray irradiation device 21 and the like between the one end edge 1SR and the other end edge 1SL of the core material 1. And reciprocating in the width direction WT at the same speed. For this reason, when the second surface density W2 is measured by the second surface density measuring device 50 at predetermined time intervals, the second predetermined portion SC in which the second surface density W2 is measured among the portions on the plane of the core 1. As shown in an enlarged view in FIG. 2, they are arranged in a dotted pattern on an imaginary straight line in an oblique direction intersecting both the longitudinal direction NT and the width direction WT of the core material 1. In addition, the interval between the adjacent second predetermined portions SC is also the same interval WK in the width direction WT.
As described above, since the arrangement of the second surface density measuring device 50 with respect to the first surface density measuring device 20 and the moving speed and timing of the first X-ray irradiation device 21 and the like are adjusted, the second surface density W2 is The second predetermined portion SC to be measured is at the same position as the first predetermined portion SB where the first surface density W1 is measured.

  As shown in FIG. 1, the paste spray device 30 directs an active material paste P pressurized at a predetermined pressure from a slit-like injection nozzle 31 over the entire width in the width direction WT toward the filling surface 1 j of the core material 1. The core material 1 is filled with the active material paste P at a predetermined filling surface density. Further, in order to prevent the core material 1 from being bent by the spray pressure of the active material paste P sprayed from the spray nozzle 31, the first position is set at a position before and after the transport direction HT with respect to the spray nozzle 31. The second core material holding rolls 80 and 90 are disposed.

  Next, the scraping device 40 will be described. As shown in FIG. 4, the scraping device 40 includes an upper scraping roll 41 disposed on the filling surface 1j side (upward in FIG. 1) of the paste-filled core material 1P, and a lower disposed on the lower side. A side scraping roll 42 is included. The scraping device 40 also holds the end of the shaft 41b in the vertical direction while rotatably holding the shaft 41b at both ends of the upper scraping roll 41 in the width direction (direction perpendicular to the paper surface in FIG. 4). One end side axis moving mechanism 43 and the other end side axis moving mechanism 44 for tilting the axis 41b of the upper scraping roll 41 with respect to the core material 1 by being moved to V are included.

  The scraping device 40 sandwiches the paste-filled core material 1P between the upper scraping roll 41 and the lower scraping roll 42, and the moving direction of the contact portion of the upper scraping roll 41 with the core material 1 is the core material. The scraping rolls 41 and 42 are rotated in the reverse direction so as to be in the opposite direction with respect to the one conveyance direction HT. Further, the rotational speed (the number of revolutions per unit time) N of the upper scraping roll 41 and the lower scraping roll 42 can be controlled by the control of the drive motor 45 that drives them.

  By the way, when the active material paste P is removed from the paste-filled core material 1P filled with the active material paste P having a predetermined surface density by using the scraping device 40, the removal amount and the scraping rolls 41 and 42 It has been found that a substantially linear relationship exists with the rotational speed N. Specifically, it is shown in FIG. 3 between the rotational speed N of the scraping rolls 41 and 42 and the filling surface density ΔW of the active material paste P filled in the paste-filled core material 1P after removal. It turns out that there is a relationship. According to the graph of FIG. 3, it can be seen that when the rotational speed N of the scraping rolls 41 and 42 is increased, the filling surface density ΔW of the active material paste P decreases linearly. Therefore, by adjusting the rotational speed N of the scraping rolls 41 and 42, the removal amount of the active material paste P scraped from the paste-filled core material 1P is adjusted, and the active material paste P in the paste-filled core material 1P is adjusted. The filling surface density ΔW can be adjusted.

  Next, the one end side axis moving mechanism 43 and the other end side axis moving mechanism 44 will be described with reference to FIG. Below, the one end side axial movement mechanism 43 is demonstrated among both. The one-end-side axial movement mechanism 43 has a wedge shape, and includes a slide base member 431 whose slope is a sliding surface 431s. Further, the slide base member 431 lifts one end of the upper scraping roll 41 by a support arm 432 extending downward from the slide base member 431. Specifically, as shown in FIG. 5A, one end portion 41ca of the core member 41c passing through the axis 41b of the upper scraping roll 41 is rotatably held by the lower end portion 432d of the support arm 432. A support arm 432 is fixed to the slide base member 431.

A pusher 434 having a sliding surface 434s that slides in contact with the sliding surface 431s is disposed above the sliding table member 431. The pusher 434 has a female screw 434m formed therein, and has an insertion hole 434h extending in parallel to the planar direction of the paste-filled core material 1P, and a male screw 433n is formed on the outer periphery of the insertion hole 434h. The inserted rod 433 is inserted. The rod 433 constitutes a rotation shaft of the servo motor 435, and the servo motor 435 can be rotated by a desired rotation angle in a desired rotation direction by a control signal.
In addition, the moving direction of the slide base member 431 is restricted by a restricting unit (not shown) so that it can move only in the vertical direction V (the vertical direction in FIG. 4). Further, the slide base member 431 is pushed up by a push-up means (not shown) upward in the vertical direction V so that the slide face 431 s presses the slide face 434 s of the pusher 434.

  Therefore, in the one-end-side axial movement mechanism 43, when the servo motor 435 is driven to rotate the rod 433 by a desired angle, the pusher 434 slides on the sliding surface 431s of the sliding base member 431. The rod 433 moves in the direction along the axial direction RT. Since the sliding surface 431 s of the sliding base member 431 is an inclined surface, the sliding base member 431 itself moves in the vertical direction V by the movement of the pusher 434. As a result, the one end portion 41 ca of the core member 41 c of the upper scraping roll 41 is lifted or pulled down in the vertical direction V through the support arm 432.

  Further, in the scraping device 40 of the present embodiment, the other-end-side axis moving mechanism 44 has the same structure. Therefore, the other end side axis moving mechanism 44 can also lift or lower the other end portion 41cb of the core member 41c of the upper scraping roll 41 in the vertical direction V by driving the servo motor 445.

Thus, by using the one end side axial movement mechanism 43 and the other end side axial movement mechanism 44 in the scraping device 40, the size of the nip between the upper scraping roll 41 and the lower scraping roll 42 can be reduced. As shown in FIG. 5, the inclination θ (see FIG. 5) of the axis 41b of the upper scraping roll 41 with respect to the shaft core 42b of the lower scraping roll 42 can be adjusted.
Specifically, in this one-end-side axial movement mechanism 43, one end-side gap between one end of the upper scraping roll 41 and one end of the lower scraping roll 42 is adjusted by adjusting the rotation angle of the servo motor 435. The size of GP1 can be adjusted. In the other end side axis moving mechanism 44, the other end side gap between the other end of the upper scraping roll 41 and the other end of the lower scraping roll 42 is adjusted by adjusting the rotation angle of the servo motor 445. The size of GP2 can be adjusted.

Next, the size of the one end side gap GP1 and the other end side gap GP2 and how the active material paste P is removed by the upper scraping roll 41 in the width direction WT will be described with reference to FIG.
FIG. 5A shows a state where GP1 = GP2. Since the upper scraping roll 41 is uniformly in contact with the paste-filled core material 1P over the entire width in the width direction WT with respect to the paste-filled core material 1P, from the paste-filled core material 1P to the width direction WT. The active material paste P will be uniformly removed over the entire width.
On the other hand, FIG. 5B shows a state of GP1 <GP2. In this case, one end side (the left side in the figure) of the upper scraping roll 41 is scraped in contact with the paste-filled core material 1P with a stronger pressing force than the other end side. Therefore, more active material paste P is removed at one end side 1R of the paste-filled core material 1P.
On the contrary, FIG. 5C shows a state of GP1> GP2. In this case, more active material paste P is removed at the other end side portion 1L in the width direction WT of the paste-filled core material 1P.

  FIG. 6 shows that one end edge of the one end side gap GP1 between the upper scraping roll 41 and the lower scraping roll 42 and one end edge of the paste-filled core material 1P with the other end side gap GP2 made constant. It is a graph which shows the relationship with the filling surface density (DELTA) W of the active material paste P in the site | part of 1 SR vicinity. In the graph of FIG. 6, it can be seen that when the one end side gap GP1 is reduced, the filling surface density ΔW of the active material paste P is reduced, and when the one end side gap GP1 is increased, the filling surface density ΔW is also increased. Therefore, the inclination θ of the axis 41b of the upper scraping roll 41 is changed using the one end side axis moving mechanism 43 or the other end side axis moving mechanism 44 to adjust the one end side gap GP1 or the other end side gap GP2. Thus, it can be seen that the removal amount of the active material paste P in the width direction WT, that is, the filling surface density ΔW of the active material paste P can be easily adjusted in the width direction WT.

  The feedback control device 60 acquires the first surface density W1 and the second surface density W2 obtained by the first surface density measurement device 20 and the second surface density measurement device 50, and uses these values to determine the active material paste P. This is a device that calculates the filling surface density ΔW and performs appropriate control of the scraping device 40. The feedback control device 60 is controlled by a program and includes a CPU, a ROM, a RAM, an external storage device, and the like. The feedback control device 60 displays data on an LCD screen and a computer 61 controlled by a predetermined program, and displays data on a touch panel. And an input / output LCD input / output device 62.

Next, a method for manufacturing the battery electrode plate 1K using the battery electrode plate manufacturing apparatus 100 according to the present embodiment will be described with reference to FIGS. 1 and 7 to 15.
One end of the core material 1 wound up in a roll shape is drawn out and conveyed in the longitudinal direction NT (conveying direction HT) by the conveying device. In the following steps, the core material 1 conveyed in the longitudinal direction NT is continuously processed.
First, in the pretreatment step, the thickness of the core material 1 is compressed to a predetermined thickness using the thickness adjusting roll 70.

Next, in the first surface density measuring step, the first surface density W1 is measured for each first predetermined portion SB of the core material 1 using the first surface density measuring device 20.
As described above, in the present embodiment, the first X-ray irradiation device 21 and the first X-ray surface density meter 22 of the first surface density measuring device 20 are arranged at a constant speed in the width direction WT by a moving mechanism (not shown). The first surface density W1 is measured sequentially while moving and is sequentially input to the computer 61. In the present embodiment, the first X-ray irradiation device 21 and the like are moved from the one end edge 1SR of the core material 1 to the other end edge 1SL (or vice versa) with respect to the 100 first predetermined portions SB on the first surface. The density W1 is measured. For this reason, each 1st predetermined site | part SB which measured 1st surface density W1 is located for every width direction space | interval WK seeing in the width direction WT. Further, during the period in which the first X-ray irradiation device 21 and the like move from one end edge 1SR to the other end edge 1SL of the core material 1, the core material 1 is sequentially transported in the transport direction HT. For this reason, the 100 first predetermined portions SB are displaced by a maximum of the predetermined longitudinal range SN when viewed in the transport direction HT (longitudinal direction NT).

Therefore, in the present embodiment, the position of each first predetermined portion SB on the plane of the core material 1 is indicated as follows.
First, the position in the width direction WT among the positions of the first predetermined portion SB on the plane of the core material 1 will be described. In the first predetermined portion SB, adjacent first predetermined portions SB are shifted from each other in the width direction interval WK and 100 pieces are arranged in the width direction WT. From this, one end edge 1SR ( In FIG. 7, the position in the width direction WT of the first predetermined portion SB closest to the lower edge) is expressed as a coordinate WK1 in the width direction WT, and the width direction sequentially toward the other end edge 1SL (upper edge in FIG. 7). The coordinates of the WT are expressed by adding numbers one by one, such as WK2, WK3,..., And the coordinate in the width direction WT that is closest to the other end edge 1SL is defined as a coordinate WK100.
Next, display about the position in the longitudinal direction NT (conveyance direction HT) among the positions of the first predetermined portion SB on the plane of the core material 1 will be described. As will be described later, the first surface density W1 measured for each first predetermined portion SB was measured in the order of 100 pieces of data from one end edge 1SR to the other end edge 1SL of the core material 1 or in the reverse order. It is convenient to use 100 data as one group and perform processing such as averaging on this. Therefore, in the core material 1, it is a strip-shaped region having a predetermined longitudinal range SN in the longitudinal direction NT and long in the width direction WT, and from the one end edge 1SR to the other end edge 1SL of the core material 1, Alternatively, the wide region SH including a series of 100 first predetermined portions SB arranged from the other end edge 1SL to the one end edge 1SR is set as one coordinate unit. Accordingly, as shown in FIG. 7, the coordinates (coordinate symbols) of the wide area are expressed as SH1, SH2, SH3,... Sequentially from the leading side in the transport direction HT (right side in FIG. 7).
By doing in this way, the position of each 1st predetermined site | part SB can be represented by the coordinate WKm (m is an integer of 1-100) of the width direction WT, and the coordinate SHn (n is an integer) of a wide area | region.

The respective first surface densities W1 in the first predetermined portions SB1 to SB100 measured by the first surface density measuring device 20 are sequentially input to the computer 61. In the computer 61, the first surface density W1 in the first predetermined portion SB is stored in association with the coordinate WKm in the width direction WT and the coordinate SHn in the wide region according to the coordinates of the first predetermined portion SB.
FIG. 8A shows a state in which each first surface density W1 measured at each first predetermined portion SB is stored in the storage device of the computer 61 in association with the coordinates of each first predetermined portion SB. It is a table. In this table, WK1 to WK100 arranged in the first row (horizontal direction) indicate the coordinates in the width direction WT, and SH1 to SH8 arranged in the first column (vertical direction) indicate the coordinates of the wide region. Further, a1 to a800 arranged in the table are values of the first surface density W1 measured at the first predetermined portion SB having the corresponding coordinates. For example, a102 is stored as the value of the first surface density W1 measured at the coordinates (WK2, SH2).

Furthermore, in the present embodiment, as the internal processing of the computer 61, as shown in FIG. 9, the first surface density W1 relating to the 100 first predetermined portions SB specified by one wide area seat (for example, SH3) is obtained. The entire width of the core material 1 is processed and controlled for each of the width zones HZ1 to HZ12 virtually divided into 12 in the width direction WT. The width zones HZ1 to HZ12 are arranged so as to be adjacent to each other in the width direction WT. The computer 61 calculates an average value of the first surface densities W1 in the plurality of first predetermined portions SB included in the ranges of the respective width zones HZ1 and the like, and associates them with the respective width zones HZ and the wide region coordinates SHn. And stored in a storage device.
FIG. 9A shows an average value d1, the first surface density W1 of the plurality of first predetermined portions SB included in each width zone HZ based on the data of the first surface density W1 of FIG. is a table showing a state in which d2,... are stored in the storage device of the computer 61 in association with each width zone HZ and a wide range of coordinates SHn. In this table, HZ1 to HZ12 arranged in the first row (horizontal direction) indicate different width zones, and SH1 to SH8 arranged in the first column (vertical direction) indicate coordinates of the wide region. Further, d1 to d96 arranged in the table are the average value of the first surface density W1 in the plurality of first predetermined portions SB included in the range specified by the coordinates of the corresponding wide region and the width zone HZ.
In the present embodiment, a total of 100 first predetermined portions SB arranged in series from one end edge 1SR to the other end edge 1SL of the core material 1 are each 8 in each of the width zones HZ1 to HZ4 and 9 in each of the HZ5 to HZ8. 8 pieces are allocated to HZ9 to HZ12 in order. Therefore, for example, since the range of the width zone HZ1 includes the coordinates WK1 to WK8 in the width direction WT, the average value of a1 to a8 in FIG. 8A is stored as the average value d1.

  Next, in the filling step, the active material paste P is sprayed onto the core material 1 from the filling surface 1j side using the paste spray device 30 to fill the core material 1 so as to have a constant surface density.

Next, in the removing step, using the scraping device 40 including the upper scraping roll 41, a part of the active material paste P once filled from the paste-filled core material 1P is removed from the filling surface 1j side.
In this removal step, the scraping rolls 41 and 42 are rotated in the reverse direction at a rotational speed N determined by a feedback control method described later to remove a part of the active material paste P from the paste-filled core material 1P. To do. Further, the active material paste P is removed while maintaining the inclination θ of the axis 41b of the upper scraping roll 41 given by the one end side gap GP1 and the other end side gap GP2 determined by the feedback control method described later. .

Next, in the second areal density measurement step, the paste-filled core material 1P from which a part of the active material paste P has been removed is the same as in the first areal density measurement step described above in the second predetermined portion SC. The two-surface density W2 is measured using the second surface density measuring device 50. The computer 61 acquires these second surface densities W2 and stores them in the storage device in the same manner as described above in association with the coordinates WKm in the width direction WT and the coordinates SHn in the wide area, as in the first surface density measurement step. (See FIG. 8 (b)). As described above, in the present embodiment, each of the second predetermined portions SC is the same as the first predetermined portion SB.
In addition, the average value of the second surface density W2 in the plurality of second predetermined portions SC included in the range of each width zone HZ is calculated, and is associated with the coordinates SHn of each width zone HZ and the wide area as described above. Is stored in the storage device (see FIG. 9B).

Finally, the active material paste P in the paste-filled core material 1P is dried by the horizontal drying furnace 10 to remove moisture and the like, thereby completing the battery electrode plate 1K as an active material.
After that, the finished long battery electrode plate 1K is cut into an appropriate shape and used as a battery electrode plate for a single battery or the like.

  Next, a method of feedback controlling the rotational speed N of the scraping rolls 41 and 42 and the inclination θ of the shaft center 41b in the removing process using the first surface density W1 and the second surface density W2 is shown in FIG. This will be described with reference to the flowcharts of FIGS.

  First, in step S1, for the scraping rolls 41 and 42 of the scraping device 40, initial values of the rotation speed N, the one end side gap GP1, and the other end side gap GP2 are set.

  Next, in step S2, it is determined whether or not a stop switch STOP of the battery electrode plate manufacturing apparatus 100 (not shown) is turned on. If it is turned on (Yes), the processing is immediately terminated. If the stop switch STOP has not been pressed (No), the process proceeds to step S3.

Next, in step S3, the scraping rolls 41 and 42 have an abnormality in the rotational speed N, the one end side gap GP1 and the other end side gap GP2 have an abnormality, and the first surface density measuring device 20 and the second surface density. The presence or absence of abnormality in the measuring device 50 is confirmed.
If it is determined that there is an abnormality, an appropriate process (not shown) is performed. For example, an adjustment is performed so that an appropriate operation is performed, or a warning that there is an abnormality is issued.

Thereafter, in step S4, the first surface density W1 measured using the first surface density measuring device 20 is acquired, and the coordinates (WKm, SHn) of the first predetermined portion SB in which the first surface density W1 is measured. And stored in the storage device of the computer 61 (see FIG. 8A).
In step S5, the second surface density W2 measured using the second surface density measuring device 50 is acquired, and the coordinates (WKm, SHn) of the second predetermined portion SC where the second surface density W2 is measured. And stored in a storage device of the computer 61 (see FIG. 8B).

  Next, in step S6, the filling surface density ΔW of the active material paste P is calculated using the second surface density W2 and the first surface density W1 with respect to the same coordinates (WKm, SHn). It is stored in the storage device of the computer 61 in accordance with the coordinates (WKm, SHn) of the predetermined part SB (second predetermined part SC) (see FIG. 8C). Specifically, the filling surface density ΔW is calculated by ΔW = W2−W1.

  In FIG. 8C, the filling surface density ΔW of the active material paste P calculated for each first predetermined portion SB is stored in the storage device of the computer 61 according to the coordinates (WKm, SHn) of each first predetermined portion SB. It is a table | surface which shows a state. As in FIGS. 8A and 8B, WK1 to WK100 arranged in the first row (horizontal direction) indicate coordinates in the width direction WT, and SH1 to SH8 arranged in the first column (vertical direction) are wide regions. The coordinates of are shown. Moreover, c1 to c800 arranged in the table are values of the filling surface density ΔW of the active material paste P in the first predetermined portion SB having the corresponding coordinates. For example, the filling surface density ΔW at the coordinates (WK2, SH2) is c102, and this value is obtained from the first and second surface densities a102, b102 at the corresponding coordinates in FIGS. (C102 = b102−a102).

  FIG. 9C is a table showing a state where the filling surface density ΔW is stored in the storage device of the computer 61 in association with the wide area SH and the width zone HZ. HZ1 to HZ12 aligned in the horizontal direction indicate the respective width zones HZ, and SH1 to SH8 aligned in the vertical direction indicate the respective wide areas SH. Further, f1 to f96 arranged in the table are wide regions SH1 to SH8, in which the value of the filling surface density ΔW in each width zone HZ is stored. For example, f1 which is the value of the filling surface density ΔW in the first predetermined portion SB1 and the width zone HZ1 is a calculated value of a difference (e1−d1) between e1 in FIG. 9B and d1 in FIG. It is.

  After step S6, the process proceeds to a conveyance direction control process (see FIG. 12) and a width direction control process (see FIG. 13), which are processed in parallel.

In step S7 of the transport direction control process shown in FIG. 12, an average value AV1 of the filling surface density ΔW in the wide area SH in the transport direction HT is obtained, and the storage device of the computer 61 is stored as shown in FIG. 8C. Store.
For example, in FIG. 8C, the average value u1 that is the average value AV1 of the filling surface density ΔW in the wide region SH1 is an average value of c1 to c100.

Next, in step S8, the moving average value DAV of the average value AV1 in the total three wide areas SH of itself and the preceding two wide areas is calculated for the filling surface density ΔW, as shown in FIG. 8C. And stored in the storage device of the computer 61. For example, the moving average value v1 in FIG. 8C is an average value of the average values u1 to u3, and the moving average value v2 is an average value of the average values u2 to u4.
In the battery electrode plate manufacturing apparatus 100 according to this example, the moving average value DAV is calculated using the average value AV1 of the three wide regions SH, but the moving average value DAV is calculated using two or four or more average values. An average value DAV may be calculated.

Next, in step S9, the conveyance direction filling amount level HL indicating the state of the filling amount of the active material paste P is determined by the moving average value DAV. The transport direction filling amount level HL has five levels of level 1 to level 5, and any one level is assigned according to the magnitude of the difference between the moving average value DAV and the target value THS. When the moving average value DAV is substantially equal to the target value THS (when the filling amount is appropriate), level 3 is assigned. Further, when the moving average value DAV is larger than the target value THS (when the filling amount is excessive), level 1 or level 2 is assigned, and when it is smaller (when the filling amount is insufficient), level 4 or level 5 is assigned. A specific level assignment method will be described below.
FIG. 10A is an explanatory diagram showing the relationship between the moving average value DAV and each level of the conveyance direction filling amount level HL. The vertical axis represents the moving average value DAV, and the horizontal axis represents time. Therefore, the graph indicated by the solid line shows the passage of time of the moving average value DAV. Further, the horizontal broken line indicates thresholds TH1 to TH4 of each level set in advance, and the horizontal alternate long and short dash line indicates a preset target value THS of the filling surface density ΔW. By comparing the moving average value DAV of the filling surface density ΔW and the threshold values TH1 to TH4 of each level, the corresponding level is assigned among the conveyance direction filling amount levels HL. Specifically, level 1 if DAV ≧ TH1, level 2 if TH1> DAV ≧ TH2, level 3 if TH2> DAV ≧ TH3, level 4 if TH3> DAV ≧ TH4, and DAV <TH4. In the case of level 5, level 5 is assigned.

  Next, in step S10, it is determined whether the time set by the timer has elapsed. The set time of this timer sets the time taken for the core material 1 to reach the second surface density measuring device 50 from the scraping rolls 41 and 42. This is because it is necessary to wait until the change of the filling surface density ΔW due to the change after the rotation speed N of the scraping rolls 41 and 42 is changed in step S12 described below. If the set time of the timer has not elapsed (No), the process returns to step S2. On the other hand, when the set time of the timer has elapsed (Yes), the process proceeds to step S12. Therefore, the process in step S12 is performed every set time of the timer.

In step S12, the rotational speed N of the scraping device 40 (scraping rolls 41 and 42) is adjusted based on the transport direction filling amount level HL. When the conveyance direction filling amount level HL is level 1 or level 2, since the filling amount of the active material paste P is too much, the rotational speed N is increased to increase the removal amount. On the other hand, in the case of level 4 or level 5, since the filling amount of the active material paste P is too small, the rotational speed N is decreased to reduce the removal amount. Moreover, in the case of level 3, since the filling amount of the active material paste P is in an appropriate state, the rotation speed N is not changed.
Since level 1 is a state in which the amount of the active material paste P is further increased as compared with level 2, the rotational speed N is adjusted to be larger in level 1 than in level 2. Further, since level 5 is a state in which the amount of filling of active material paste P is further smaller than level 4, the rotational speed N is adjusted to be lower in level 5 than in level 4.
As described above, after adjusting the rotational speed N, the timer is set, and the process returns to step S2.

On the other hand, in step S13 of the width direction control process shown in FIG. 13, the average value AVR of the width zones HZ1 to HZ6 of the one end side portion 1R and the average value AVL of the width zones HZ7 to HZ12 of the other end side portion 1L are calculated. As shown in FIG. 9 (c), it is stored in the storage area of the computer 61.
For example, the average value r1 of the one end side portion 1R is an average value of the filling surface densities f1 to f6 in the wide region SH1, and the average value s1 of the other end side portion 1L is an average value of the filling surface densities f7 to f12.

Next, in step S14, a left / right difference DRL, which is the difference between the average value AVL and the average value AVR, is calculated and stored in the storage area of the computer 61 as shown in FIG.
For example, the left-right difference y1 is obtained by calculating the difference (r1-s1) between the average value r1 of the one end side portion 1R and the average value s1 of the other end side portion 1L.

Next, in step S15, the moving average value AVD of the left-right difference DRL of the filling surface density ΔW is calculated and stored in the storage area of the computer 61 as shown in FIG.
For example, the moving average value z1 is an average value of three left-right differences y1 to y3, and the moving average value z2 is an average value of left-right differences y2 to y4.

Next, in step S16, the width direction filling amount difference level WL is determined based on the moving average value AVD of the left-right difference DRL. The width direction filling amount difference level WL has seven levels of level 1 to level 7, and any one level is assigned according to the magnitude of the moving average value AVD. When the moving average value AVD is substantially 0 (when the filling surface density is substantially equal between the one end side portion 1R and the other end side portion 1L), level 4 is assigned. Further, when the moving average value AVD is a positive value (when the filling surface density of the one end side portion 1R is larger than that of the other end side portion 1L), any one of the levels 1 to 3 is assigned. . On the contrary, when it is deviating negatively (when the filling surface density of the other end side portion 1L is higher than that of the one end side portion 1R), any one of level 4 to level 7 is assigned. A specific level assignment method will be described below.
FIG. 10B is an explanatory diagram showing the relationship between the moving average value AVD of the left-right difference DRL of the filling surface density ΔW and each level of the width direction filling amount difference level WL. The vertical axis represents the moving average value AVD of the left-right difference DRL, and the horizontal axis represents time. Therefore, the graph shown by the solid line shows the passage of time of the moving average value AVD. Further, the horizontal broken line indicates the threshold values TW1 to TW6 of each level, and the horizontal alternate long and short dash line indicates the position of the moving average value AVD = 0. By comparing the moving average value AVD of the left-right difference DRL and the threshold values TW1 to TW6 of each level, the corresponding level among the width direction filling amount difference levels WL is assigned. Specifically, level 1 if AVD ≧ TW1, level 2 if TW1> AVD ≧ TW2, level 3 if TW2> AVD ≧ TW3, level 4 if TW3> AVD ≧ TW4, TW4> AVD. Level 5 is assigned when ≧ TW5, level 6 is assigned when TW5> AVD ≧ TW6, and level 7 is assigned when AVD <TW6.

Next, in step S17, it is determined whether or not the conveyance direction filling amount level HL is level 3 (a level within the allowable range). If it is not level 3 (No), the process returns to step S2. If the conveyance direction filling amount level HL is not level 3, the rotational speed N of the scraping rolls 41 and 42 is changed in step S12. In this case, it is not preferable to simultaneously adjust the inclination of the axis 41b from step S18 onward, so that the process of step S18 is skipped. Therefore, when the filling surface density ΔW (moving average value DAV) is not appropriate when viewed in the transport direction HT, the scraping device 40 has the one end side gap GP1 and the gap until the difference is eliminated by the transport direction control process. The inclination θ of the shaft center 41b is not adjusted by changing the other end side gap GP2.
On the other hand, if it is level 3 (Yes), the process proceeds to step S18.

In step S18, the one end side gap GP1 and the other end side gap GP2 in the scraping device 40 are adjusted based on the determined width direction filling amount difference level WL. When the width direction filling amount difference level WL is from level 1 to level 3, it indicates that the filling amount of the active material paste P on the one end side portion 1R is larger than that on the other end side portion 1L. Specifically, it is considered that the state shown in FIG. Therefore, the one end side gap GP1 is reduced. The other end side gap GP2 is increased. Alternatively, by performing both of these, the inclination θ of the shaft center 41b is made as close as possible to the state of θ = 0 (see FIG. 5A). On the other hand, when the width direction filling amount difference level WL is from level 5 to level 7, it indicates that the filling amount of the other end side portion 1L is larger than that of the one end side portion 1R. Specifically, it is considered that the state shown in FIG. Therefore, the other end side gap GP2 is reduced. One end side gap GP1 is increased. Alternatively, by performing both of these, the inclination θ of the axis 41b is brought as close as possible to the state of θ = 0 (see FIG. 5A).
In the case of level 4, since the filling amount of the active material paste P is substantially equal in the one end side portion 1R and the other end side portion 1L, the one end side gap GP1 and the other end side gap GP2 are adjusted. There is no need.
When the width direction filling amount difference level WL becomes level 3, level 2, and level 1, the filling amount of the active material paste P on the one end side portion 1R in this order is compared with that on the other end side portion 1L. Therefore, the smaller the level number, the smaller the one end side gap GP1 in order to return the inclination θ of the axis 41b to a greater extent. Alternatively, the other end side gap GP2 is made larger. Or do both. On the other hand, in the case of level 5, level 6, and level 7, the filling amount of the active material paste P on the other end side portion 1L becomes larger in this order than that on the one end side portion 1R. In order to return the inclination θ of the axis 41b to a greater level as the level number increases, the one end side gap GP1 is further increased. Alternatively, the other end side gap GP2 is made smaller. Or do both.
In step S18, after adjusting the one end side gap GP1 and the other end side gap GP2 as described above, the process returns to step S2.
Thus, the rotational speed N of the scraping rolls 41 and 42 and the inclination θ of the axis 41b of the scraping roll 41 can be controlled by the above-described processing.

(Modification)
In the above embodiment, in the width direction control process (see FIG. 13), it is determined whether or not the conveyance direction filling amount level HL is level 3 in step S17. If it is not level 3, that is, if the rotational speed N of the scraping rolls 41 and 42 is changed in step S12 (see FIG. 12), step S18 is skipped and the one end side gap GP1 and the other end side are skipped. The gap GP2 was not changed. As described above, in the above-described embodiment, the rotation speed N of the scraping rolls 41 and 42 and the one end side gap GP1 and the other end side gap GP2 are not changed at the same time. The change of the rotation speed N is prioritized.

On the other hand, as in this modification, it is also possible to perform control so that priority is given to the change of the one end side gap GP1 and the other end side gap GP2. That is, in the width direction control process (see FIG. 15) in the present modification, the same process as the process according to the above-described embodiment (see FIG. 13) is performed in steps S13 to S16 and S18.
However, unlike the embodiment, step S17 does not exist between steps S16 and S18, and the one end side gap GP1 and the other end side gap GP2 are not changed according to the level of the width direction filling amount difference level WL. Including the case (level 4), the process of step S18 is always performed.

On the other hand, also in the transport direction control process (see FIG. 14) of this modification, the same process (see FIG. 12) as the above-described embodiment is performed in steps S7 to S10 and S12.
However, unlike the embodiment, step S111 is provided between steps S10 and S12. In step S111, it is determined whether or not the width direction filling amount difference level WL obtained in step S16 is level 4. If it is not level 4, step S12 is skipped and the process returns to step S2. Therefore, when the width direction filling amount difference level WL is not level 4, that is, when the one end side gap GP1 and the other end side gap GP2 are changed, this is prioritized and the rotational speed N of the scraping rolls 41 and 42 is given. No changes are made.

  Thus, in this modification, the variation in the filling amount of the active material paste P in the width direction WT is preferentially adjusted. For this reason, when the core material 1 with a wide width | variety is used, when the dispersion | variation in the filling amount of the width direction WT becomes a problem, it is good to perform control shown in this modification.

In the above, the present invention has been described with reference to examples and modifications. However, the present invention is not limited to the examples and the like, and it can be applied as appropriate without departing from the scope of the present invention. Nor.
For example, in the battery electrode plate manufacturing apparatus according to the example and the modification, as the first surface density measuring device and the second surface density measuring device, one surface density meter is moved in the width direction, and a plurality of them are within a predetermined range. However, it is also possible to use a measuring device that has a plurality of areal density meters and can simultaneously measure a plurality of predetermined portions.

Further, in the present embodiment and the modification, in order to obtain the average values AVR, AVL, the left-right difference DRL, and the moving average value AVD, the core material 1 is divided into 12 width zones HZ1 to HZ12, and each width is divided. The average value of the first surface density W1 and the average value of the second surface density W2 for each zone were used (see FIG. 9). By doing in this way, all the data of 100 1st predetermined site | parts SB from the one end edge 1SR to the other end edge 1SL were used.
On the other hand, in order to obtain the average values AVR, AVL, left-right difference DRL, and moving average value AVD, the data of all the width zones are not used, but an appropriate number (for example, three on the right side and three on the left side) or an appropriate position. It can also be determined using data of the width zone (for example, HZ2 to HZ4, HZ9 to HZ11). In addition, the number and position of the first predetermined portions SB included in each width zone can be appropriately changed.

It is explanatory drawing which shows the structure of the electrode plate manufacturing apparatus for batteries concerning an Example and a modification. It is explanatory drawing for demonstrating the relationship between the core material in a battery electrode plate manufacturing apparatus, a 1st surface density measuring apparatus, and a 2nd surface density measuring apparatus concerning an Example and a modification. It is a graph which concerns on an Example and a modification, and shows the relationship between the rotational speed N of a scraping roll, and the filling surface density (DELTA) W of an active material paste. It is explanatory drawing for demonstrating the structure of an end side axial center moving mechanism among the electrode plate manufacturing apparatuses for a battery concerning an Example and a modification. It is explanatory drawing for demonstrating the relationship between the inclination of the axial center of the scraping roll in the scraping apparatus of the electrode plate manufacturing apparatus for batteries concerning an Example and a modification, and removal of an active material paste, (a) is GP1. = GP2 state, (b) shows a state of GP1 <GP2, and (c) shows a state of GP1> GP2. It is a graph which shows the relationship between the one end side gap and the one end side filling surface density in a scraping roll among the battery electrode plate manufacturing apparatuses concerning an Example and a modification. In the battery electrode plate manufacturing apparatus according to Examples and Modifications, it is an explanatory diagram for explaining the positional relationship of a plurality of predetermined parts and the like measured by the first surface density measuring device and the second surface density measuring device. It is explanatory drawing which shows the data regarding each surface density for every predetermined site | part stored in the memory | storage device of the computer. Among these, (a) is the first surface density, (b) is the second surface density, (c) is the measurement data (calculation data) regarding the filling surface density of the active material paste, the width direction average value, and the moving average value thereof. including. It is explanatory drawing which shows the data regarding each surface density for every width zone stored in the memory | storage device of a computer. Of these, (a) is the first surface density, (b) is the second surface density, (c) is the average value of the one end side and the other end side, and the average value of the filling surface density of the active material paste. The left-right difference and the moving average value of the left-right difference are shown. (A) is a graph which shows the example of a change of the moving average value of the filling surface density regarding a conveyance direction for demonstrating a conveyance direction filling amount level, (b) is for demonstrating the width direction filling amount difference level, It is a graph which shows the example of a change of the moving average value regarding the left-right difference of a filling surface density. It is a flowchart from initial setting to calculation of an active material paste filling amount among the flowcharts of the method of performing feedback control of the rotational speed and the inclination of the shaft center for the scraping roll in the battery electrode plate manufacturing apparatus according to the example. It is a flowchart about a conveyance direction control process among the flowcharts of the method of performing feedback control of the rotational speed and the inclination of an axial center about the scraping roll in the battery electrode plate manufacturing apparatus concerning an Example. It is a flowchart about the width direction control process among the flowcharts of the method of performing feedback control of the rotational speed and the inclination of a shaft center about the scraping roll in the battery electrode plate manufacturing apparatus according to the embodiment. It is a flowchart about a conveyance direction control process among the flowcharts of the method of performing feedback control of the rotational speed and the inclination of an axial center about the scraping roll in the electrode manufacturing apparatus for batteries concerning a modification. It is a flowchart about the width direction control process among the flowcharts of the method of performing feedback control of the rotational speed and the inclination of an axial center about the scraping roll in the electrode manufacturing apparatus for battery concerning a modification.

Explanation of symbols

1 Core material WT (core material) width direction NT (core material) longitudinal direction (direction perpendicular to the width direction)
1L Other end side portion 1P Paste filled core material 1R (Core material) One end side portion 1j (Core material) filling surface 20 First surface density measuring device (first surface density measuring means)
30 Paste spray device (filling means)
40 Scraping device (removal means)
41 Upper scraping roll 43 One end side axis moving mechanism (tilt adjusting means)
44 Other end side axis moving mechanism (tilt adjusting means)
50 Second surface density measuring device (second surface density measuring means)
60 Feedback control device (removal amount adjusting means, inclination adjusting means)
100 Battery plate manufacturing apparatus ΔW Filling surface density GP1 One end side gap GP2 Other end side gap P Active material paste SB First predetermined portion SC Second predetermined portion SH Wide region W1 First surface density W2 Second surface density

Claims (18)

A method for producing a battery electrode plate by filling a flat core material with an active material,
A first surface density measurement step of measuring a first surface density at a predetermined portion of the core material;
A filling step of filling a predetermined amount of an active material paste into the core material for which the first surface density is measured, and forming a paste-filled core material;
A removal step of removing a part of the filled active material paste over the entire width in the width direction of the paste-filled core material,
A paste-filled core material from which a part of the active material paste has been removed, and a second surface density measurement step of measuring a second surface density at the predetermined site or its vicinity; and
A method for manufacturing a battery electrode plate, wherein the removal amount of the active material paste in the removal step is adjusted so that a filling surface density of the active material paste calculated from the first surface density and the second surface density becomes a predetermined value. It is a manufacturing method of the electrode plate for batteries according to claim 1,
The core material is a long flat core material that is relatively conveyed in a longitudinal direction orthogonal to the width direction,
The removal step includes
The active material paste is removed by a scraping roll,
Adjustment of the removal amount of the active material paste,
The manufacturing method of the electrode plate for batteries performed by changing the rotational speed per unit time of the said scraping roll. It is a manufacturing method of the electrode plate for batteries according to claim 1 or 2,
The first areal density measurement step includes:
Among the core materials, the first surface density is measured at each of the plurality of predetermined portions located at predetermined intervals in the width direction within the predetermined width orthogonal range in a direction orthogonal to the width direction. ,
The second areal density measurement step includes
In each of the plurality of predetermined portions or the vicinity thereof, the second surface density is measured,
Adjustment of the removal amount of the active material paste,
Using the filling surface density representative values for the plurality of filling surface densities in the predetermined width orthogonal range, calculated using the first surface density and the second surface density applied to the plurality of predetermined portions in the predetermined width orthogonal range. A method for manufacturing a battery electrode plate. It is a manufacturing method of the electrode plate for batteries according to claim 3,
The first areal density measurement step includes:
Moving the first surface density measuring means movable in the width direction of the core material in the width direction to measure the first surface density for each of the plurality of predetermined portions;
The second areal density measurement step includes
A battery electrode plate for measuring the second surface density of each of the plurality of predetermined portions or its vicinity by moving a second surface density measuring means movable in the width direction of the core material in the width direction. Manufacturing method. It is a manufacturing method of the electrode plate for batteries according to any one of claims 1 to 4,
Adjustment of the removal amount of the active material paste,
Using the first surface density and the second surface density applied to each of the plurality of predetermined portions at different positions with respect to the direction perpendicular to the width direction or the longitudinal direction,
Or
A method for manufacturing a battery electrode plate using the filling surface density representative value in each of a plurality of the predetermined width orthogonal ranges at different positions with respect to a direction orthogonal to the width direction or a longitudinal direction. A method for producing an electrode plate for a battery comprising a long flat core material filled with an active material,
Regarding the core material relatively conveyed in the longitudinal direction along one end edge and the other end edge of itself,
Within the predetermined longitudinal range with respect to the longitudinal direction, when viewed in the width direction of the core material orthogonal to the longitudinal direction, one end side predetermined portion located on one end edge side from the center, and other located on the other end side from the center About the end side predetermined site,
A first surface density measurement step of measuring one end-side first surface density at the one end-side predetermined portion and the other end-side first surface density at the other end-side predetermined portion;
A filling step of filling a predetermined amount of an active material paste into the core material measured for the one end side first surface density and the other end side first surface density to form a paste-filled core material;
A removal step of removing a part of the filled active material paste by a scraping roll over the entire width of the paste-filled core material,
About the paste-filled core material from which a part of the active material paste is removed,
The one end side second surface density at the one end side predetermined portion or the vicinity thereof, and
A second surface density measurement step of measuring the other surface side second surface density at the other end side predetermined portion or the vicinity thereof, and
Using the one end side first surface density, the one end side second surface density, the other end side first surface density, and the other end side second surface density, the filling surface density of the active material paste is determined in the width direction. The manufacturing method of the battery electrode plate which adjusts the inclination with respect to the said core material of the axis line of the said scraping roll so that it may become equal by the one end edge side and the other end edge side from the center of this. It is a manufacturing method of the electrode plate for batteries according to claim 6,
The first areal density measurement step includes:
Of the core material, the position within the predetermined longitudinal range in the longitudinal direction and within the range of the one end edge side with respect to the center in the width direction of the core material is positioned at every first width direction interval in the width direction. In each of the plurality of one end side predetermined portions to be measured, the one end side first surface density is measured,
Among the core materials, within the predetermined range with respect to the longitudinal direction, and within the range of the other end edge side with respect to the center in the width direction of the core material, for each second width direction interval with respect to the width direction. In each of a plurality of the other end side predetermined portions located, the other end side first surface density is measured,
The second areal density measurement step includes
While measuring the one end side second surface density in each of the plurality of one end side predetermined portions or the vicinity thereof,
In each of the plurality of other end side predetermined portions or the vicinity thereof, the other end side second surface density is measured,
The adjustment of the inclination of the axis of the scraping roll with respect to the core material is as follows:
Calculation using the one end-side first surface density and the one end-side second surface density of the plurality of one-end-side predetermined portions within the predetermined longitudinal range and within the range of one end edge side from the center in the width direction of the core material. A plurality of one end side filling surface density representative values related to the one end side filling surface density in a range of one end edge side from the center in the width direction of the core in the predetermined longitudinal range; and
The other end side first surface density and the other end side second surface density of the plurality of other end side predetermined portions within the predetermined longitudinal range and within the range of the other end edge side from the center in the width direction of the core member. Using the other end-side filling surface density representative value for the other end-side filling surface density in the range on the other end edge side with respect to the center in the width direction of the core material in the predetermined longitudinal range. Manufacturing method of battery electrode plate. It is a manufacturing method of the battery electrode plate according to claim 7,
The first areal density measurement step includes:
The one end side first surface density measuring means movable in the width direction of the core material is moved in the width direction to measure the one end side first surface density for each of the plurality of one end side predetermined portions,
The other end side first surface density measuring means movable in the width direction of the core member is moved in the width direction to measure the other end side first surface density for each of the plurality of other end side predetermined portions. And
The second areal density measurement step includes
The one end side second surface density measuring means movable in the width direction of the core member is moved in the width direction, and the one end side second surface density is determined for each of the plurality of one end side predetermined portions or the vicinity thereof. As well as measuring
The other end side second surface density measuring means movable in the width direction of the core member is moved in the width direction, and the other end side second for each of the plurality of other end side predetermined portions or the vicinity thereof. A method for producing an electrode plate for a battery for measuring the surface density. It is a manufacturing method of the electrode plate for batteries according to any one of claims 6 to 8,
Adjustment of the inclination of the axis of the scraping roll with respect to the core material,
In each of the plurality of predetermined longitudinal ranges at different positions with respect to the longitudinal direction,
The one end side first surface density and the one end side second surface density applied to the one end side predetermined portion;
The other end side first surface density and the other end side second surface density applied to the other end side predetermined portion are used,
Or
In each of the plurality of predetermined longitudinal ranges at different positions with respect to the longitudinal direction,
The manufacturing method of the electrode plate for batteries performed using the said one end side filling surface density representative value and the other end side filling surface density representative value. A method for producing an electrode plate for a battery comprising a long flat core material filled with an active material,
About the core material relatively conveyed in the longitudinal direction along one end edge and the other end edge of itself,
Seen in the width direction of the core material orthogonal to the longitudinal direction within a predetermined longitudinal range for the longitudinal direction,
One end-side first surface density at one end-side predetermined portion located on one end edge side from the center, and
A first surface density measurement step of measuring the other end side first surface density at the other end side predetermined portion located on the other end edge side from the center;
A filling step of filling a predetermined amount of an active material paste into the core material measured for the one end side first surface density and the other end side first surface density to form a paste-filled core material;
A removal step of removing a part of the filled active material paste in the width direction by a scraping roll over the entire width in the width direction of the paste-filled core material;
About the paste-filled core material from which a part of the active material paste is removed,
The one end side second surface density at the one end side predetermined portion or the vicinity thereof, and
A second surface density measurement step of measuring the other surface side second surface density at the other end side predetermined portion or the vicinity thereof, and
Using the one end side first surface density, the one end side second surface density, the other end side first surface density, and the other end side second surface density,
Adjust the removal amount of the active material paste in the removal step by the rotation speed of the scraping roll so that the filling surface density of the active material paste becomes a predetermined value,
Manufacture of an electrode plate for a battery that adjusts the inclination of the axis of the scraping roll with respect to the core material so that the filling surface density of the active material paste is equal on the one end edge side and the other end edge side with respect to the center in the width direction. Method. It is a manufacturing method of the electrode plate for batteries according to claim 10,
The first areal density measurement step includes:
Of the core material, the position within the predetermined longitudinal range in the longitudinal direction and within the range of the one end edge side with respect to the center in the width direction of the core material is positioned at every first width direction interval in the width direction. In each of the plurality of one end side predetermined portions to be measured, the one end side first surface density is measured,
Among the core materials, within the predetermined range with respect to the longitudinal direction, and within the range of the other end edge side with respect to the center in the width direction of the core material, for each second width direction interval with respect to the width direction. In each of a plurality of the other end side predetermined portions located, the other end side first surface density is measured,
The second areal density measurement step includes
While measuring the one end side second surface density in each of the plurality of one end side predetermined portions or the vicinity thereof,
In each of the plurality of other end side predetermined portions or the vicinity thereof, the other end side second surface density is measured,
Adjustment of the removal amount of the active material paste,
The one end side first surface density and the one end side second surface density applied to the plurality of one end side predetermined portions in the predetermined longitudinal range and the other end applied to the plurality of other end side predetermined portions in the predetermined longitudinal range. Performed using the filling surface density representative value for the plurality of filling surface densities in the predetermined longitudinal range, calculated using the side first surface density and the other end side second surface density,
The adjustment of the inclination of the axis of the scraping roll with respect to the core material is as follows:
Using each of the one end-side first surface density and one end-side second surface density of the plurality of one end-side predetermined portions within the predetermined longitudinal range and within the range of one end edge side from the center in the width direction of the core material. The one end side filling surface density representative value regarding the one end side filling surface density in the range of the one end edge side from the center in the width direction of the core material in the predetermined longitudinal range, and
The other end side first surface density and the other end side second surface density of the plurality of other end side predetermined portions within the predetermined longitudinal range and within the range of the other end edge side from the center in the width direction of the core member. Using the other end-side filling surface density representative value for the other end-side filling surface density in the range on the other end edge side with respect to the center in the width direction of the core material in the predetermined longitudinal range. Manufacturing method of battery electrode plate. It is a manufacturing method of the battery electrode plate according to claim 11,
The first areal density measurement step includes:
The one end side first surface density measuring means movable in the width direction of the core material is moved in the width direction to measure the one end side first surface density for each of the plurality of one end side predetermined portions,
The other end side first surface density measuring means movable in the width direction of the core member is moved in the width direction to measure the other end side first surface density for each of the plurality of other end side predetermined portions. And
The second areal density measurement step includes
The one end side second surface density measuring means movable in the width direction of the core member is moved in the width direction, and the one end side second surface density is determined for each of the plurality of one end side predetermined portions or the vicinity thereof. As well as measuring
The other end side second surface density measuring means movable in the width direction of the core member is moved in the width direction, and the other end side second for each of the plurality of other end side predetermined portions or the vicinity thereof. A method for producing an electrode plate for a battery for measuring the surface density. It is a manufacturing method of the electrode plate for batteries according to any one of claims 10 to 12,
Adjustment of the removal amount of the active material paste,
In each of the plurality of predetermined longitudinal ranges at different positions with respect to the longitudinal direction,
The one end side first surface density and the one end side second surface density applied to the one end side predetermined portion;
The other end side first surface density and the other end side second surface density applied to the other end side predetermined portion are used,
Or
The manufacturing method of the electrode plate for batteries performed using the said filling surface density representative value in each of the said several predetermined longitudinal range in a different position regarding the said longitudinal direction. It is a manufacturing method of the electrode plate for batteries according to any one of claims 10 to 13,
Adjustment of the inclination of the axis of the scraping roll with respect to the core material,
In each of the plurality of predetermined longitudinal ranges at different positions with respect to the longitudinal direction,
The one end side first surface density and the one end side second surface density applied to the one end side predetermined portion;
The other end side first surface density and the other end side second surface density applied to the other end side predetermined portion are used,
Or
In each of the plurality of predetermined longitudinal ranges at different positions with respect to the longitudinal direction,
The manufacturing method of the electrode plate for batteries performed using the said one end side filling surface density representative value and the other end side filling surface density representative value. An apparatus for producing an electrode plate for a battery comprising a flat core material filled with an active material,
First surface density measuring means for measuring a first surface density at a predetermined portion of the core material;
Filling means for filling the core material measured for the first surface density with a predetermined amount of active material paste to form a paste-filled core material;
Removal means for removing a part of the filled active material paste in the width direction over the entire width in the width direction of the paste-filled core material,
With respect to the paste-filled core material from which a part of the active material paste has been removed, second surface density measuring means for measuring a second surface density at the predetermined site or its vicinity,
A removal amount adjusting means for adjusting the removal amount of the active material paste in the removing means so that the filling surface density of the active material paste calculated from the first surface density and the second surface density becomes a predetermined value. Battery plate manufacturing equipment. It is a manufacturing apparatus of the battery electrode plate according to claim 15,
The core material is
It is a long flat core material that is relatively conveyed in the longitudinal direction perpendicular to the width direction,
The removing means includes
Including a scraping roll for removing the active material paste over the entire width in the width direction,
The removal amount adjusting means includes
An apparatus for manufacturing a battery electrode plate, wherein the removal amount of the active material paste is adjusted by changing the rotation speed of the scraping roll. An apparatus for manufacturing an electrode plate for a battery comprising a long flat core material filled with an active material,
About the core material relatively conveyed in the longitudinal direction along one end edge and the other end edge of itself,
One end-side first portion in the one end-side predetermined portion of the one end-side predetermined portion, which is located on the one end edge side of the center as viewed in the width direction of the core material orthogonal to the longitudinal direction within the predetermined longitudinal range in the longitudinal direction. One end side first surface density measuring means for measuring the surface density;
The other end side first surface density measuring means for measuring the other end side first surface density at the other end side predetermined portion with respect to the other end side predetermined portion located on the other end side with respect to the center as viewed in the width direction. When,
Filling means for filling the core material measured for the one end side first surface density and the other end side first surface density with a predetermined amount of active material paste to form a paste-filled core material;
Removal means for removing a part of the filled active material paste in the width direction by a scraping roll over the entire width in the width direction of the paste-filled core material;
For the paste-filled core material from which a part of the active material paste has been removed, one end-side second surface density measuring means for measuring one end-side second surface density at the one end-side predetermined portion or the vicinity thereof, and the other The other end side second surface density measuring means for measuring the other end side second surface density at the end side predetermined portion or the vicinity thereof;
Using the one end side first surface density, the one end side second surface density, the other end side first surface density, and the other end side second surface density, the filling surface density of the active material paste is determined in the width direction. And an inclination adjusting means for adjusting the inclination of the axis of the scraping roll with respect to the core so that the one end edge side and the other end edge side are equal to each other than the center of the battery. An apparatus for manufacturing a battery electrode plate according to claim 17,
The filling surface density of the active material paste is a predetermined value using the one end side first surface density, the one end side second surface density, the other end side first surface density, and the other end side second surface density. Thus, an apparatus for producing a battery electrode plate, comprising removal amount adjusting means for adjusting the removal amount of the active material paste by the rotational speed of the scraping roll.

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