KR102424560B1 - Electrode plate manufacturing method for lead acid battery with improved charging efficiency and low-temperature starting capability by applying ion conductive polymer electrolyte membrane - Google Patents

Abstract

The present invention relates to a method for manufacturing an electrode plate for a lead-acid battery with improved charging efficiency and improved low-temperature start-up capability by applying an ion conductive polymer electrolyte membrane, and more particularly, an electrochemical reaction by applying a sulfonic acid electrolyte membrane made of hydrophilicity when manufacturing a lead-acid battery electrode plate An ion conductive polymer that can increase the efficiency of the battery, improve the charging efficiency, improve the starting ability in a low-temperature environment, improve the basic performance (CCA) of lead-acid batteries and improve the early termination of life through the improvement of electrical conductivity It relates to a method for manufacturing an electrode plate for a lead-acid battery with improved charging efficiency and improved low-temperature start-up capability by applying an electrolyte membrane.

Description

Electrode plate manufacturing method for lead acid battery with improved charging efficiency and low-temperature starting capability by applying ion conductive polymer electrolyte membrane

The present invention relates to a method for manufacturing an electrode plate for a lead-acid battery with improved charging efficiency and improved low-temperature start-up capability by applying an ion conductive polymer electrolyte membrane, and more particularly, an electrochemical reaction by applying a sulfonic acid electrolyte membrane made of hydrophilicity when manufacturing a lead-acid battery electrode plate An ion conductive polymer that can increase the efficiency of the battery, improve the charging efficiency, improve the starting ability in a low-temperature environment, improve the basic performance (CCA) of lead-acid batteries and improve the early termination of life through the improvement of electrical conductivity It relates to a method for manufacturing an electrode plate for a lead-acid battery with improved charging efficiency and improved low-temperature start-up capability by applying an electrolyte membrane.

Currently, the active material mechanism for lead-acid batteries adds polyester-based fibers to the active material to secure physical strength and a reaction surface area with sulfuric acid.

Typically, a polyester-based fiber having a fineness of 0.8 to 5 denier and a length of 1 to 10 mm is added to the lead acid battery active material, and these fibers (fibers) have excellent acid resistance and oxidation resistance.

At this time, the organic synthetic short fibers to be added usually have a circular cross-sectional shape and have a length of about 2 to 10 mm.

The components of organic synthetic short fibers are mainly polypropylene, polyester, and modacrylic, which have excellent acid and oxidation resistance.

The prior art, Republic of Korea Patent Registration No. 10-0603908, "Electrode plate for storage battery and method for manufacturing the same" is a pole plate manufacturing by applying pressure to attach fiber-reinforced paper to the surface of an active material so that fiber filaments are embedded, and filling the concave-convex part of the surface with an active material. method is disclosed.

The above-mentioned prior Korean patent registration relates to "a electrode plate for a storage battery and a method for manufacturing the same". The electrode plate of the storage battery is coated with an active material having electrochemical activity on a substrate that serves as a passage through which electricity flows, and fiber-reinforced paper is applied to the surface of the active material. In the step of attaching or pressing, pressure is applied so that the fiber filaments of the fiber-reinforced paper are embedded to a certain depth, and the active material is filled in the uneven surface of the fiber-reinforced paper to increase the binding surface area, thereby preventing the active material from being detached from the substrate. Technology to prevent and further improve the initial high-rate discharge characteristics of the electrode plate due to the porosity of the fiber-reinforced paper, and to extend the life of the storage battery by holding and supporting the active material due to the stable support and acid resistance of the fiber-filament structure of the fiber-reinforced paper is about

So far, lead (Pb)-calcium (Ca)-tin (Sn) alloys have been used as grid alloys for lead-acid batteries. It is pointed out as a problem that the lifespan of the lead-acid battery is shortened due to deformation due to the growth of the battery.

Accordingly, it is required to improve the corrosion resistance, mechanical strength, and suppress growth deformation of the grid.

On the other hand, the active material of a conventional lead-acid battery is generally based on lead powder and an aqueous sulfuric acid solution, and after mixing other additives according to the characteristics of the positive and negative electrodes, the active material is prepared.

The active material made in this way goes through a coating operation, which is a work applied to the substrate, and after aging and drying processes according to the positive/negative characteristics, the prepared positive and negative plates are alternately overlapped in several sheets. To this end, a non-conductive separator is installed, and the positive plate, the negative plate, and the separator are configured to form an electrode plate group.

A plurality of electrode plate groups are connected in series according to the capacity of the storage battery and are accommodated in the electric wire.

The accommodated electrode plate group undergoes a chemical conversion process that is supercharged so that it can have electrical properties. At this time, lead dioxide (PbO2) is formed in the active material of the positive electrode plate, and due to its characteristics, countless fine particles of oxidized lead are combined and the particles are rich in porosity. The electrolyte is designed to freely diffuse and penetrate the liver.

In addition, the active material of the negative plate is sponge-like lead (Pb), which is also rich in porosity and reactivity so that the electrolyte can freely diffuse and penetrate.

The products made in this way are finally available for use in the market.

In addition, in order to facilitate the supercharging process and improve the durability of the product, a separate aging and drying process is performed for each polarity.

The aging process of the positive electrode plate is an important process to increase the durability of the product. Lead (Pb), a component of the active material, is converted into lead oxide ( PbO) as well as change the crystal structure of the active material.

The negative plate can be aged and dried at the same time if left in the natural state without a separate process.

However, if sufficient aging and drying are not achieved, the electrode plate and the electrode plate stick together during the assembly process to form the electrode plate group, and the durability of the active material is reduced due to the presence of moisture, and the active material embedded between the substrates is easily dropped even by a small impact.

In the lead-acid battery made through this process, as the number of charging and discharging increases, the active material is more easily separated from the substrate by the reaction of lead and sulfuric acid, and the fallen active material can no longer participate in the reaction. By lowering the performance, the lifespan of lead-acid batteries is usually only 1 to 2 years.

Therefore, in accordance with the current demand for high-performance lead-acid batteries, a manufacturing process capable of improving the durability and performance of lead-acid batteries is required.

On the other hand, in a lead-acid battery, after the active material is applied to the grid, PET non-woven fabric or tissue paper made of paper is pressed and attached to the surface of the active material.

This is used only to support the active material applied to the grid so that it does not fall off the grid, and this active material support (non-woven fabric or tissue paper) is characterized by acid resistance, heat resistance, and oxidation resistance.

However, since these supports support the active material only by pressing when applying the active material to the grid, when it is installed in a vehicle and used, the active material dropout from the grid is accelerated depending on the user's usage conditions, environmental conditions, and operating conditions, so that the battery capacity and reduced starting power or premature end of life.

Therefore, there is a need for a manufacturing process capable of improving the durability and performance of a lead-acid battery while maintaining acid resistance, heat resistance, and oxidation resistance characteristics.

Republic of Korea Patent Registration No. 10-0483246

Therefore, the present invention has been devised to solve the above problems of the prior art,

An object of the present invention is to increase the efficiency of the electrochemical reaction by applying a hydrophilic sulfonic acid electrolyte membrane when manufacturing a lead acid battery electrode plate, thereby improving the charging efficiency, improving the starting ability in a low-temperature environment, and improving electrical conductivity. It is intended to improve the basic performance (CCA) of lead-acid batteries and to improve the early end of life.

Another object of the present invention is to provide an electrode plate to which a nonwoven fabric and a sulfonic acid electrolyte membrane are applied at the same time, thereby improving durability.

In order to achieve the problem to be solved by the present invention, a method for manufacturing an electrode plate for a lead-acid battery with improved charging efficiency and improved low-temperature starting ability by applying an ion conductive polymer electrolyte membrane according to an embodiment of the present invention,

An active material application step of applying an active material to the grid (S100); and

Polyelectrolyte membrane attaching step (S200) of attaching an ion conductive polymer electrolyte membrane to the grid coated with the active material instead of pressing and attaching a PET nonwoven fabric or tissue paper made of paper to the surface of the active material; and

By including; a high temperature aging and drying step (S300) for aging and drying the grid to which the ion conductive polymer electrolyte membrane is attached in a high temperature environment, thereby solving the problem of the present invention.

By applying the ion conductive polymer electrolyte membrane of the present invention to the electrode plate manufacturing method for lead-acid batteries with improved charging efficiency and improved low-temperature start-up capability, a hydrophilic sulfonic acid electrolyte membrane is applied to the production of lead-acid battery electrode plates to increase the efficiency of the electrochemical reaction, Accordingly, the charging efficiency is improved, the starting ability in a low-temperature environment is improved, and the basic performance (CCA) of the lead-acid battery is improved through the improvement of electrical conductivity and the effect of improving the early end of life is provided.

In addition, by providing an electrode plate to which the nonwoven fabric and the sulfonic acid electrolyte membrane are applied at the same time, the durability thereof is improved.

1 is a process diagram of a method for manufacturing an electrode plate for a lead-acid battery in which charging efficiency and low-temperature start-up ability are improved by applying an ion conductive polymer electrolyte membrane according to an embodiment of the present invention.
2 is a low-temperature starting force graph comparing an improved product manufactured in a method for manufacturing an electrode plate for a lead-acid battery with improved charging efficiency and improved low-temperature starting ability by applying an ion conductive polymer electrolyte membrane according to an embodiment of the present invention and a conventional product; .
3 is a process diagram of a method for manufacturing an electrode plate for a lead-acid battery in which charging efficiency and low-temperature start-up ability are improved by applying an ion conductive polymer electrolyte membrane according to another embodiment of the present invention.

Hereinafter, since the present invention can apply various transformations and can have various embodiments, specific embodiments are illustrated in the drawings and described in detail.

However, this is not intended to limit the present invention to specific embodiments, and should be understood to include all modifications, equivalents, and substitutes included in the spirit and scope of the present invention.

The present embodiments are provided to explain the present invention in more detail to those of ordinary skill in the art to which the present invention pertains.

Therefore, the shape of each element shown in the drawings may be exaggerated to emphasize a clearer description, and in describing the present invention, if it is determined that a detailed description of a related known technology may obscure the gist of the present invention, the detailed description omit

Terms such as first, second, etc. may be used to describe various elements, but the elements should not be limited by the terms.

The terms are used only for the purpose of distinguishing one component from another.

Terms used in the present invention are only used to describe specific embodiments, and are not intended to limit the present invention.

The singular expression includes the plural expression unless the context clearly dictates otherwise.

In the present invention, terms such as "comprises" or "have" are intended to designate that the features, numbers, steps, operations, components, parts, or combinations thereof described in the specification exist, but one or more other features It is to be understood that this does not preclude the possibility of the presence or addition of numbers, steps, operations, components, parts, or combinations thereof.

A method for manufacturing an electrode plate for a lead-acid battery with improved charging efficiency and improved low-temperature start-up capability by applying an ion conductive polymer electrolyte membrane according to an embodiment of the present invention,

An active material application step of applying an active material to the grid (S100); and

Polyelectrolyte membrane attaching step (S200) of attaching an ion conductive polymer electrolyte membrane to the grid coated with the active material instead of pressing and attaching a PET nonwoven fabric or tissue paper made of paper to the surface of the active material; and

and a high-temperature aging and drying step (S300) for aging and drying the grid to which the ion conductive polymer electrolyte membrane is attached in a high-temperature environment.

At this time, in the high temperature aging and drying step (S300),

The high temperature is characterized in that it is within the range of 300 ℃ ~ 400 ℃.

At this time, in the high temperature aging and drying step (S300),

After drying at room temperature for 12 hours, pre-heat-treatment for 2 hours at 200 ° C in a dryer,

Finally, it is characterized in that there is no crack by heat treatment for 2 hours within the range of 300°C to 400°C in the dryer, and stable bonding between the electrode plate and the ion conductive polymer electrolyte membrane is possible.

At this time, according to the temperature conditions in the high temperature aging and drying step (S300),

It can be used as an ion channel in the electrolyte by forming fine pores, and due to the conductivity of the electrolyte membrane, the internal resistance in the lead-acid battery is reduced, thereby improving the low-temperature start-up ability and improving the charging efficiency. .

At this time, by applying the ion conductive polymer electrolyte membrane to improve charging efficiency and low-temperature start-up ability, the electrode plate manufacturing method for lead-acid batteries,

It is characterized in that the lifespan when the polymer electrolyte membrane is applied from 272 cycles, which is the lifespan when the polymer electrolyte membrane is not applied, can provide a lifespan improvement of 38% at 374 cycles.

At this time, the ion conductive polymer electrolyte membrane,

It is characterized in that it is a membrane membrane to which a hydrophilic sulfonic acid group is applied.

On the other hand, according to another embodiment, in the case of introducing a process of attaching a nonwoven fabric made of PET material or tissue paper made of a paper material to the surface of the active material by pressing, instead of attaching the polymer electrolyte film (S200),

Non-woven fabric attaching step (S150) of attaching a non-woven fabric made of PET or tissue paper made of paper to the active material-coated grid by pressing it on the surface of the active material; and

Polyelectrolyte membrane positioning step (S200A) of positioning the ion conductive polymer electrolyte membrane on the attached nonwoven fabric or tissue paper; And

By including a non-woven fabric/polymer electrolyte membrane attaching step (S250A) of attaching the non-woven fabric or tissue paper and the ion conductive polymer electrolyte membrane to the non-woven fabric or tissue paper using an ultrasonic wave or a bonding method, it is characterized in that durability is improved.

At this time, by the manufacturing method of the present invention, a lead-acid battery including an electrode plate for a lead-acid battery to which an ion conductive polymer electrolyte membrane is applied is provided.

Hereinafter, a method for manufacturing an electrode plate for a lead-acid battery with improved charging efficiency and improved low-temperature starting capability by applying the ion conductive polymer electrolyte membrane according to the present invention will be described in detail.

1 is a process diagram of a method for manufacturing an electrode plate for a lead-acid battery in which charging efficiency and low-temperature start-up ability are improved by applying an ion conductive polymer electrolyte membrane according to an embodiment of the present invention.

As shown in FIG. 1, the method for manufacturing an electrode plate for a lead-acid battery, which improved charging efficiency and low-temperature start-up ability by applying the ion conductive polymer electrolyte membrane of the present invention,

An active material application step of applying an active material to the grid (S100); and

Polyelectrolyte membrane attaching step (S200) of attaching an ion conductive polymer electrolyte membrane to the grid coated with the active material instead of pressing and attaching a PET nonwoven fabric or tissue paper made of paper to the surface of the active material; and

and a high-temperature aging and drying step (S300) for aging and drying the grid to which the ion conductive polymer electrolyte membrane is attached in a high-temperature environment.

The present invention increases the efficiency of the electrochemical reaction by applying a hydrophilic sulfonic acid electrolyte membrane when manufacturing the lead acid battery electrode plate, thereby improving the charging efficiency, improving the starting ability in a low-temperature environment, and improving the electrical conductivity of the lead-acid battery It will provide the effect of improving basic performance (CCA) and early termination of life.

That is, by applying the sulfonic acid electrolyte membrane instead of the nonwoven fabric or tissue paper, it becomes possible to improve the electrical conductivity in the active material and the ability to accept electrons.

As a result, it was confirmed through experiments that the basic performance (CCA) and early termination of life of lead-acid batteries were improved through the improvement of electrical conductivity.

In addition, the cause of failure of a lead acid battery depends on the type of load and how it is managed during use.

The main failure factors include sulfated active material, dislodged electrode plate active material, positive electrode grid corrosion, separator breakage, and complex factors.

In particular, in the case of products mounted on automobiles, the active material sulphation is accelerated depending on the operating conditions and the load used in the electric field, and the electrode plate active material falls off, resulting in an early end of life.

Therefore, it is important to reduce the acceleration of the drop-off of the active material from the grid.

In conclusion, by applying a hydrophilic sulfonic acid electrolyte membrane and curing it on the surface of the active material of the grid, the adhesion of the active material is improved. and the sliding problem was improved.

In order to provide the above function, the active material is applied to the grid through the active material application step (S100) of the present invention.

Thereafter, in the polymer electrolyte membrane attaching step (S200), the ion conductive polymer electrolyte membrane is attached to the grid coated with the active material by pressing and attaching the PET nonwoven fabric or tissue paper made of paper to the surface of the active material.

Thereafter, through a high-temperature aging and drying step (S300), the grid to which the ion conductive polymer electrolyte membrane is attached is aged and dried in a high-temperature environment to manufacture the electrode plate of the lead-acid battery.

Specifically, in the high-temperature aging and drying step (S300),

The high temperature is characterized in that it is within the range of 300 ℃ ~ 400 ℃.

As shown in Table 2, the critical significance of performing high-temperature treatment within the above range is that the lifetime at about 200°C is higher than that of the conventional 238 cycles, but provides an insufficient life-extending effect of 20% or less, and 400°C The lifetime at a temperature exceeding 238 cycles is not much different from that of the conventional 238 cycles, which is thought to be due to cracks occurring at a high temperature exceeding 400°C.

Therefore, it is preferable to carry out curing within the above temperature range.

On the other hand, in the high temperature aging and drying step (S300),

After drying at room temperature for 12 hours, pre-heat-treatment for 2 hours at 200 ° C in a dryer,

Finally, it is characterized in that there is no crack by heat treatment for 2 hours within the range of 300°C to 400°C in the dryer, and stable bonding between the electrode plate and the ion conductive polymer electrolyte membrane is possible.

At this time, according to the temperature conditions in the high temperature aging and drying step (S300),

It can be used as an ion channel in the electrolyte by forming fine pores, and due to the conductivity of the electrolyte membrane, the internal resistance in the lead-acid battery is reduced, thereby improving the low-temperature start-up ability and improving the charging efficiency. .

Specifically, if the temperature exceeds 200°C in the preheating process, cracks may occur between the active material, the electrolyte membrane, and the electrode plate during the final heat treatment. Therefore, it would be desirable to observe the above temperature.

After that, there is no crack by finally heat-treating in a dryer within the range of 300°C to 400°C for 2 hours, enabling stable bonding between the electrode plate and the ion conductive polymer electrolyte membrane.

At this time, the lifetime at a temperature exceeding 400 degrees is not much different from the conventional 238 cycles, which is judged to be due to cracks occurring at a high temperature exceeding 400 degrees. It is possible to provide the most optimal life cycle through this process.

As described above, in order to grasp the effect of the present invention, after applying an active material to a conventional grid, the electrode plate to which the nonwoven fabric is pressed and attached to the active material and the electrode plate to which the ion conductive polymer electrolyte membrane manufactured by the present invention is applied. Basic performance and life test.

The conventional product described below refers to a product manufactured using an electrode plate including a non-woven fabric as an active material used in the lead acid battery (BX80) manufactured by the applicant, and the improved product is an ion conductive polymer electrolyte membrane through the manufacturing method of the present invention. Refers to a product containing an electrode plate for lead acid batteries.

In addition, conventional products and improved products with a final 70 Ah capacity (20 hour rate capacity) were produced through subsequent processes such as assembly and chemical conversion to give electrical conductivity to the substrate, and the effect of the electrode plate to which the ion conductive polymer electrolyte membrane is applied In order to prove this, chargeability and 50% DoD durability tests were conducted.

1) CA: Charge Acceptance test

After discharging a fully charged sample at room temperature (25±2℃) with a 5-hour rate current (17.5A based on 70Ah) for 2.5 hours, it is left at 0±2℃ for more than 12 hours.

After that, charge it with a constant voltage of 14.4V±0.1V and measure the current at 10 minutes of charging.

As a result of the test, it was found that the improved product increased the current by 34% in about 10 minutes compared to the conventional product due to high electrical conductivity and charging efficiency.

division hour conventional products improvement




Rechargeability 1 minute 27.25 28.17 2 minutes 24.21 26.98 3 minutes 22.14 26.22 4 minutes 21.25 25.52 5 minutes 20.11 24.83 6 minutes 19.35 23.94 7 minutes 18.74 23.46 8 minutes 17.68 22.79 9 minutes 17.04 22.37 10 minutes 16.43 22.10

In general, lead-acid batteries are attached to the active material by pressing on the surface of the active material after applying the active material to the grid, and then attaching the PET non-woven fabric or tissue paper made of paper.

This is used only to support the active material applied to the grid so that it does not fall off the grid, and this active material support (non-woven fabric or tissue paper) is characterized by acid resistance, heat resistance, and oxidation resistance.

However, since these supports support the active material only by pressing when applying the active material to the grid, when it is installed in a vehicle and used, the drop-off of the active material from the grid is accelerated depending on the user's operating conditions, environmental conditions, and operating conditions, thereby increasing the battery capacity. and reduced starting power or premature end of life.

However, in the case of the above method, there is a problem in providing performance in an environment that requires increasingly high basic performance.

On the other hand, in the present invention, in order to improve this, an ion conductive polymer electrolyte membrane having excellent adhesion of the active material and excellent electrical conductivity is used.

Therefore, after applying the active material to the grid instead of the non-woven fabric or tissue paper, the ion conductive polymer electrolyte membrane is applied to improve the adhesion of the active material, and by using the ion conductive polymer electrolyte membrane, the basic performance (CCA) of the lead acid battery is improved and Improving early termination of life.

The ion conductive polymer electrolyte membrane described above,

It is characterized in that it is a membrane membrane to which a hydrophilic sulfonic acid group is applied.

Specifically, it is characterized by applying a hydrophilic sulfonic acid electrolyte membrane to the manufacture of lead-acid battery electrode plates to increase the efficiency of the electrochemical reaction and to improve durability and start-up ability in low-temperature environments.

In general, sulfonic acid is used in fuel cells, and the membrane is defined as a material that selectively passes a specific material.

A hydrophilic sulfonic acid group is attached to the main chain of a hydrophobic polymer known as Teflon.

The sulfuric acid electrolyte used in lead-acid batteries is a mixture of sulfuric acid and water. Of these, due to the humidifying effect of water, fine phase separation occurs in the sulfonic acid group region to form fine pores.

In manufacturing the electrode plate (electrode) of a conventional lead-acid battery through the present invention, it can be applied when pasting the active material, and there is no shortage of ion channels in the electrolyte by forming fine pores under high temperature and high humidity aging conditions, and the conductivity of the electrolyte membrane It reduces the internal resistance in lead-acid battery products due to this, and thereby has a characteristic that can provide low-temperature starting capability and charging efficiency improvement.

As a result, it is possible to provide an improvement in lifespan compared to the conventional product, and as shown in FIG. 2 , it is possible to provide an improved low-temperature starting power compared to the low-temperature starting power of the conventional product.

Meanwhile, in order to prove the effect of the present invention, it will be described later through the following experimental data.

2) Accelerated life test (SAE J2801)

The lead-acid battery is subjected to 34 charge/discharge cycles in a 75°C water bath for about one week, similar to general vehicle conditions.

After performing 34 cycles, discharge at 200A for 10 seconds and when it maintains over 7.2V, perform the life test in such a way that the cycle is repeated 34 times.

Also, when the end current of the charging phase rises more than 15A during the cycle or when it is at rest, when the voltage is below 12.0V or when discharging 200A in the weekly verification phase, the test is stopped when the voltage is below 7.2V.

Table 2 below shows the results of the SAE J2801 test, and shows the voltage when discharging at 200A for 10 seconds every 34 charge/discharge cycles.

cycle Non-woven application Electrolyte membrane applied + pre-heat treatment not applied Electrolyte membrane application + preheat treatment + 200 degree drying Electrolyte membrane application + preheat treatment + 350 degree drying Electrolyte membrane application + preheat treatment + 450 degree drying 34 11.82 11.83 11.85 11.87 11.82 68 11.76 11.77 11.80 11.83 11.70 102 11.72 11.73 11.78 11.80 11.62 136 11.69 11.71 11.76 11.79 11.59 170 11.65 11.68 11.74 11.77 11.50 204 11.55 11.61 11.69 11.70 11.42 238 11.43 11.45 11.60 11.63 11.30 272 7.2 or less 7.2 or less 11.49 11.55 7.2 or less 306 7.2 or less 11.48 340 11.40 374 11.31 408 7.2 or less

In the case of Table 2, when the ion conductive polymer electrolyte membrane is not applied, the lifespan is 238 cycles, and when the ion conductive polymer electrolyte membrane is applied, the lifespan is also 238 cycles when the preheat treatment process is not performed.

On the other hand, although the ion conductive polymer electrolyte membrane was applied and preheated, the lifespan improved from 238 cycles to 272 cycles when dried at a temperature of 200 degrees, but it was confirmed that there was no significant improvement.

However, it was found that the service life was improved by 57% from 238 cycles to 374 cycles because the ion conductive polymer electrolyte membrane was applied, preheated, and dried at a temperature of 350°C.

Therefore, it can be seen that the most straightforward drying temperature is 350 degrees within 300 to 400 degrees.

On the other hand, it was found that the ion-conducting polymer electrolyte membrane was applied and preheated, and after drying at a temperature of 450 degrees, which exceeded 400 degrees, it returned to 238 cycles. is judged to be

Therefore, it is preferable to carry out curing within the above temperature range.

On the other hand, as another embodiment, as shown in FIG. 3, when introducing a process of attaching a non-woven fabric made of PET or tissue paper made of paper to the surface of an active material by pressing, instead of attaching a polymer electrolyte film (S200) ,

Non-woven fabric attachment step (S150) of attaching a non-woven fabric made of PET or tissue paper made of paper to the active material-coated grid by pressing it on the surface of the active material; and

Polyelectrolyte membrane positioning step (S200A) of positioning the ion conductive polymer electrolyte membrane on the attached nonwoven fabric or tissue paper; And

By including a non-woven fabric/polymer electrolyte membrane attaching step (S250A) of attaching the non-woven fabric or tissue paper and the ion conductive polymer electrolyte membrane to the non-woven fabric or tissue paper using an ultrasonic wave or a bonding method, durability is improved.

That is, the nonwoven fabric is attached to the surface of the active material by pressing (S150), and thereafter, the ion conductive polymer electrolyte membrane is positioned on the upper surface of the nonwoven fabric (S200A).

Thereafter, a process of attaching the nonwoven fabric or tissue paper and the ion conductive polymer electrolyte membrane to the ion conductive polymer electrolyte membrane using ultrasonic waves or a bonding method (S250A) is performed.

In this case, since the nonwoven fabric and the electrolyte membrane are present at the same time, the rigidity is further improved, thereby providing an effect of improving the durability of the lead-acid battery.

Since these supports support the active material only by pressing when applying the active material to the grid, when it is installed on a vehicle and used, the active material dropout from the grid is accelerated depending on the user's operating conditions, environmental conditions, and operating conditions, so that the capacity and start-up of the battery are accelerated. resulting in reduced strength or premature termination of lifespan.

Therefore, without removing the nonwoven fabric, if the polymer electrolyte membrane is placed there again in the presence of the nonwoven fabric and then adhered by ultrasonic waves, the effect of preventing the double active material from falling off by the nonwoven fabric and the electrolyte membrane and improving the charging efficiency by the electrolyte membrane and It will be possible to further improve the low-temperature starting capability.

Through the manufacturing method as described above, by applying a sulfonic acid electrolyte membrane made of hydrophilic acid when manufacturing lead-acid battery electrode plates, the efficiency of the electrochemical reaction is increased, thus the charging efficiency is improved, and the starting ability in a low-temperature environment is improved, and the electrical conductivity It will provide the effect of improving the basic performance (CCA) of the lead acid battery and improving the early end of life through the improvement.

Those skilled in the art to which the present invention of the above content pertains will understand that the present invention may be implemented in other specific forms without changing the technical spirit or essential features of the present invention. Therefore, it should be understood that the embodiments described above are illustrative in all aspects and not restrictive.

S100: Active material application step
S200: Polyelectrolyte film adhesion step
S300: high temperature aging and drying step

Claims (5)

In the method for manufacturing an electrode plate for a lead-acid battery with improved charging efficiency and low-temperature start-up capability by applying an ion conductive polymer electrolyte membrane,
An active material application step of applying an active material to the grid (S100); and
Polyelectrolyte membrane attaching step (S200) of attaching an ion conductive polymer electrolyte membrane to the grid coated with the active material instead of attaching the PET nonwoven fabric or tissue paper made of paper to the surface of the active material by pressing it on the surface of the active material; and
A high-temperature aging and drying step (S300) for aging and drying the grid to which the ion conductive polymer electrolyte membrane is attached in a high-temperature environment;
In the high temperature aging and drying step (S300),
After drying at room temperature for 12 hours, pre-heat-treatment for 2 hours at 200°C in a dryer,
Finally, it is characterized in that there is no crack by heat treatment for 2 hours within the range of 300 ° C to 400 ° C in the dryer, and stable bonding between the electrode plate and the ion conductive polymer electrolyte membrane is possible,
By the temperature conditions in the high-temperature aging and drying step (S300),
It can be used as an ion channel in the electrolyte by forming fine pores, and due to the conductivity of the electrolyte membrane, the internal resistance in the lead-acid battery is reduced, thereby improving the low-temperature starting ability and charging efficiency. ,
The ion conductive polymer electrolyte membrane,
It is characterized in that it is a membrane membrane to which a hydrophilic sulfonic acid group is applied,
The life of the lead-acid battery manufactured by the manufacturing method is characterized in that it can provide a lifespan improvement of 38% from 272 cycles to 374 cycles,
A method for manufacturing a lead-acid battery electrode plate with improved charging efficiency and low-temperature start-up capability by applying an ion conductive polymer electrolyte membrane, characterized in that the charging importability is increased by 34% from 16.43 to 22.10.
delete delete delete By the manufacturing method of claim 1,
A lead-acid battery containing an electrode plate for a lead-acid battery to which an ion conductive polymer electrolyte membrane is applied.

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