Preparation process of solid-state lead battery pole plate

Abstract

The invention relates to the technical field of production of lead storage batteries, in particular to a preparation process of a solid lead battery polar plate, which comprises the following steps: inputting lead powder into a stirring container, sequentially adding dilute sulphuric acid and an additive into the stirring container, and mixing to obtain lead paste; coating a grid with the lead paste, carrying out acid spraying treatment on the grid, and carrying out drying treatment on the acid-sprayed grid to prepare a polar plate; according to the method, the polar plate is prepared firstly, the internal resistance of the prepared polar plate is detected, whether the preparation process of the polar plate is qualified or not is analyzed according to the internal resistance of the polar plate, and when the internal resistance of the polar plate is large, whether the preparation process is qualified or not is secondarily judged according to the discharge rate of the polar plate, so that the control precision of the preparation process of the polar plate is improved; according to the method, the corresponding parameters are adjusted to the corresponding values according to the analysis result, the polar plate is prepared again according to the adjusted parameters, and the preparation efficiency of the polar plate is improved while the quality of the polar plate is guaranteed.

Description

Technical Field

[0001] The invention relates to the technical field of lead-acid battery production, and in particular to a preparation process of a solid-state lead-acid battery polar plate. Background Art

[0002] The charging and discharging process of solid-state lead batteries is based on the electrochemical reaction of active substances on the plates. When the lead dioxide on the positive plate is discharged, the lead dioxide obtains electrons and reacts with ions in the solid electrolyte to generate lead sulfate, while converting chemical energy into electrical energy and releasing it. When charging, under the action of an external power source, the lead sulfate is oxidized to lead dioxide again to store electrical energy again. The spongy lead on the negative plate loses electrons to generate lead sulfate during discharge. When charging, the lead sulfate is reduced to spongy lead to achieve the storage and release of electrical energy. The prior art immerses the plate in a silica sol liquid. After the plate is dried, the plate contains nano-silicon dioxide particles with small particles and large specific surface area, which can increase the apparent area of ​​the material in the plate and improve the high current discharge capacity and low temperature discharge capacity of the lead-acid battery. However, due to the influence of various factors in the plate preparation process, the low control accuracy of the preparation process will affect the plate quality, the rework time is long, and the plate preparation efficiency is affected.

[0003] Chinese patent application number: CN202110075072.2 discloses a method for preparing a lead-acid battery plate and a lead-acid battery plate, and the steps are as follows: (1) preparing wet lead paste and coating the plate; (2) acid-watering or paper-coating the obtained plate after coating; (3) surface drying the plate after acid-watering or paper-coating; (4) curing and drying the plate after surface drying to prepare the lead-acid battery plate. The invention immerses the plate in a silica sol liquid, and after the plate is dried, the plate contains nano-silicon dioxide particles with small particles and large specific surface area, which can increase the apparent area of ​​the material in the plate, enhance the acid-competing ability of the material in the plate, and improve the high current discharge capability and low temperature discharge capability of the lead-acid battery.

[0004] However, the prior art still has the following problems: Since the plate preparation process is affected by many factors, low control accuracy of the preparation process will affect the quality of the plate, long rework time, and affect the efficiency of plate preparation. Summary of the invention

[0005] To this end, the present invention provides a solid-state lead battery plate preparation process to overcome the problems in the prior art that the plate preparation process is affected by multiple factors, the control accuracy of the preparation process is low, which affects the quality of the plate, the rework time is long, and the plate preparation efficiency is affected.

[0006] To achieve the above-mentioned purpose, the present invention provides a process for preparing a solid-state lead battery plate. The process comprises: Step S1, inputting lead powder into a stirring container, and sequentially adding dilute sulfuric acid and additives into the stirring container, and mixing to prepare a lead paste; Step S2, applying the lead paste to the grid, treating the grid with acid, and drying the acid treated grid to obtain a plate; Step S3, detecting the internal resistance and discharge rate of the electrode plate, analyzing whether the preparation process of the electrode plate is qualified according to the internal resistance of the electrode plate, and when it is preliminarily determined that the preparation process of the electrode plate is unqualified, making a secondary judgment on whether the preparation process of the electrode plate is qualified based on the discharge rate of the electrode plate, analyzing the reason for the unqualified preparation process of the electrode plate based on the internal resistance of the electrode plate, adjusting the corresponding parameters to the corresponding values ​​based on the analysis results, and re-preparing the electrode plate according to the adjusted parameters.

[0007] Furthermore, in step S3, analyzing whether the preparation process of the electrode plate is qualified according to the internal resistance of the electrode plate includes: If the internal resistance is less than or equal to the first preset internal resistance, it is determined that the preparation process of the electrode plate is qualified; If the internal resistance is greater than the first preset internal resistance and less than or equal to the second preset internal resistance, it is preliminarily determined that the preparation process of the electrode plate is unqualified, and a secondary determination is made on whether the preparation process of the electrode plate is qualified based on the discharge rate of the electrode plate; If the internal resistance is greater than the second preset internal resistance, it is determined that the manufacturing process of the electrode plate is unqualified, and the reason why the manufacturing process of the electrode plate is unqualified is analyzed based on the internal resistance of the electrode plate.

[0008] Furthermore, the secondary determination of whether the preparation process of the electrode plate is qualified based on the discharge rate of the electrode plate includes: If the discharge rate is less than or equal to the preset discharge rate, it is determined that the preparation process of the electrode plate is unqualified, and the reason why the preparation process of the electrode plate is unqualified is analyzed based on the internal resistance of the electrode plate; If the discharge rate is greater than the preset discharge rate, it is determined that the acid treatment is unqualified.

[0009] Furthermore, when the acid treatment is determined to be unqualified, the acid concentration during the acid treatment is adjusted based on the discharge rate, wherein the reduction in the acid concentration is positively correlated with the discharge rate.

[0010] Furthermore, the reasons for the failure of the plate preparation process based on the internal resistance analysis of the plate include: Calculating the difference between the internal resistance and the second preset internal resistance to obtain a resistance difference, If the resistance difference is less than or equal to the first preset resistance difference, it is determined that the reason why the plate preparation process is unqualified is that the drying process is unqualified; If the resistance difference is greater than the first preset resistance difference and less than or equal to the second preset resistance difference, a secondary determination is made on the reason why the preparation process of the electrode plate is unqualified based on the capacity of the electrode plate; If the resistance difference is greater than the second preset resistance difference, it is determined that the reason why the preparation process of the electrode plate is unqualified is that the lead paste composition is uneven.

[0011] Further, when the drying process is determined to be unqualified, the ratio of the resistance difference to the first preset resistance difference is calculated, and the drying temperature during the drying process is adjusted based on the ratio, wherein the increase in the drying temperature is negatively correlated with the ratio.

[0012] Furthermore, when the drying temperature is adjusted, the electrode plate is re-prepared according to the adjusted parameters, and a number of test points are selected on the re-prepared electrode plate, and the porosity of each test point is detected in turn, and the variance of the porosity of each test point is calculated. If the variance is greater than or equal to the preset variance, it is determined that the drying speed is too fast during the drying process; If the variance is smaller than the preset variance, it is determined that the preparation process of the electrode plate is qualified.

[0013] Further, when it is determined that the drying speed is too fast during the drying process, the temperature change rate during the drying process is reduced based on the variance, wherein the reduction amplitude of the temperature change rate is positively correlated with the variance.

[0014] Furthermore, the secondary determination of the reasons for the failure of the preparation process of the electrode plate based on the capacity of the electrode plate includes: Calculate the capacity difference between the expected capacity and the actual capacity of the plate, If the capacity difference is less than or equal to the preset capacity difference, it is determined that the preparation process of the electrode plate is unqualified, and the reason why the preparation process of the electrode plate is unqualified is analyzed based on the internal resistance of the electrode plate; If the capacity difference is greater than the preset capacity difference, it is determined that the acid treatment is unqualified.

[0015] Furthermore, when it is determined that the lead paste composition is uneven, the stirring time in the lead paste preparation process is adjusted based on the resistance difference, wherein the increase in the stirring time is positively correlated with the resistance difference.

[0016] Compared with the prior art, the beneficial effect of the present invention lies in that, in the present invention, the electrode plate is first prepared, the internal resistance of the prepared electrode plate is detected, and whether the preparation process of the electrode plate is qualified is analyzed based on the internal resistance of the electrode plate. When the internal resistance of the electrode plate is large, a secondary judgment is made on whether the preparation process is qualified based on the discharge rate of the electrode plate, thereby improving the control precision of the electrode plate preparation process and improving the analysis accuracy of the preparation process. The present invention adjusts the corresponding parameters to the corresponding values ​​according to the analysis results, and re-prepares the electrode plate according to the adjusted parameters, thereby improving the preparation efficiency of the electrode plate while ensuring the quality of the electrode plate.

[0017] Furthermore, in the present invention, a preliminary analysis is first made on whether the preparation process of the electrode plate is qualified based on the internal resistance of the electrode plate. When the internal resistance is between the first preset internal resistance and the second preset internal resistance, it is preliminarily determined that the preparation process of the electrode plate is unqualified, and a secondary judgment is made on whether the preparation process of the electrode plate is qualified based on the discharge rate of the electrode plate. When the discharge rate of the electrode plate is large, considering that the concentration of the acetic acid solution is too high, resulting in a decrease in the capacity of the electrode plate and an impact on the internal resistance, the concentration of acetic acid is adjusted according to the discharge rate to ensure the quality of the electrode plate.

[0018] Furthermore, in the present invention, when the drying temperature adjustment in the drying process is completed, the electrode plate is re-prepared according to the adjusted drying temperature, and the porosity of the re-prepared electrode plate is detected by a multi-point detection method. Considering that the drying speed of the electrode plate is too fast, the porosity of the lead paste will be uneven, thereby affecting the infiltration effect of the electrolyte, reducing the ion transmission efficiency, and further increasing the internal resistance of the battery, the present invention determines the discrete degree of the porosity of each point on the electrode plate according to the variance of the porosity of each point on the electrode plate, and then adjusts the changing speed of the drying temperature according to the discrete degree, reduces the temperature changing speed, thereby reducing the influence of temperature change on the porosity of the lead paste, and thus ensuring the quality of the electrode plate. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 A flow chart of a process for preparing a solid-state lead battery plate; Figure 2 A flow chart for analyzing whether the preparation process of the electrode plate is qualified; Figure 3 A flow chart for secondary determination of whether the plate preparation process is qualified; Figure 4 A flow chart for analyzing the reasons why the plate preparation process is unqualified. DETAILED DESCRIPTION

[0020] In order to make the objects and advantages of the present invention more clearly understood, the present invention is further described below in conjunction with embodiments; it should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.

[0021] It should be pointed out that the data in this embodiment are obtained by comprehensive analysis and evaluation of the historical data of the system of the present invention in the six months before this determination and the corresponding historical determination results. It can be understood by those skilled in the art that the determination method of the system of the present invention for a single parameter mentioned above can be to select the value with the highest proportion as the preset standard parameter according to the data distribution, use weighted summation to use the obtained value as the preset standard parameter, substitute each historical data into a specific formula and use the value obtained by the formula as the preset standard parameter or other selection methods, as long as the system of the present invention can clearly define different specific situations in the single determination process through the obtained values.

[0022] The preferred embodiments of the present invention are described below with reference to the accompanying drawings. It should be understood by those skilled in the art that these embodiments are only used to explain the technical principles of the present invention and are not intended to limit the protection scope of the present invention.

[0023] It should be noted that, in the description of the present invention, terms such as "up", "down", "left", "right", "inside" and "outside" indicating directions or positional relationships are based on the directions or positional relationships shown in the drawings. This is merely for the convenience of description and does not indicate or imply that the device or element must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it cannot be understood as a limitation on the present invention.

[0024] In addition, it should be noted that in the description of the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For those skilled in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0025] See also Figure 1 As shown, it is a flow chart of the preparation process of solid-state lead battery plates.

[0026] The preparation process of the solid-state lead battery plate provided in this embodiment includes: Step S1, inputting lead powder into a stirring container, and sequentially adding dilute sulfuric acid and additives into the stirring container, and mixing to prepare a lead paste; Step S2, applying the lead paste to the grid, treating the grid with acid, and drying the acid treated grid to obtain a plate; Step S3, detecting the internal resistance and discharge rate of the electrode plate, analyzing whether the preparation process of the electrode plate is qualified according to the internal resistance of the electrode plate, and when it is preliminarily determined that the preparation process of the electrode plate is unqualified, making a secondary judgment on whether the preparation process of the electrode plate is qualified based on the discharge rate of the electrode plate, analyzing the reason for the unqualified preparation process of the electrode plate based on the internal resistance of the electrode plate, adjusting the corresponding parameters to the corresponding values ​​based on the analysis results, and re-preparing the electrode plate according to the adjusted parameters.

[0027] Specifically, in this embodiment, the specific structure of the stirring container is not limited. It only needs to be able to stir the lead powder, dilute sulfuric acid and additives, and the material of the stirring container does not affect the chemical properties of the stirred components. The above belongs to the prior art and will not be repeated here.

[0028] In the present invention, a pole plate is first prepared, and the internal resistance of the prepared pole plate is detected. Whether the preparation process of the pole plate is qualified is analyzed according to the internal resistance of the pole plate. When the internal resistance of the pole plate is relatively large, whether the preparation process is qualified is secondarily determined according to the discharge rate of the pole plate, thereby improving the control precision of the pole plate preparation process and the analysis accuracy of the preparation process. The present invention adjusts the corresponding parameters to the corresponding values ​​according to the analysis results, and re-prepares the pole plate according to the adjusted parameters, thereby improving the preparation efficiency of the pole plate while ensuring the quality of the pole plate.

[0029] See also Figure 2 As shown, it is a flow chart for determining whether the preparation process of the plate is qualified.

[0030] Specifically, in step S3, analyzing whether the preparation process of the electrode plate is qualified according to the internal resistance of the electrode plate includes: If the internal resistance is less than or equal to the first preset internal resistance, it is determined that the preparation process of the electrode plate is qualified; If the internal resistance is greater than the first preset internal resistance and less than or equal to the second preset internal resistance, it is preliminarily determined that the preparation process of the electrode plate is unqualified, and a secondary determination is made on whether the preparation process of the electrode plate is qualified based on the discharge rate of the electrode plate; If the internal resistance is greater than the second preset internal resistance, it is determined that the manufacturing process of the electrode plate is unqualified, and the reason why the manufacturing process of the electrode plate is unqualified is analyzed based on the internal resistance of the electrode plate.

[0031] Specifically, in this embodiment, the first preset internal resistance and the second preset internal resistance are obtained in advance, and a number of qualified solid-state lead battery plates of the same model are obtained, and the internal resistance of each plate is detected respectively, and the average value of the internal resistance is solved. The first preset internal resistance is 0.95~1.05 times the average value, and the second preset internal resistance is 1.1~1.2 times the average value.

[0032] See also Figure 3 As shown, it is a flow chart for secondary determination of whether the preparation process of the electrode plate is qualified.

[0033] Specifically, the secondary determination of whether the preparation process of the electrode plate is qualified based on the discharge rate of the electrode plate includes: If the discharge rate is less than or equal to the preset discharge rate, it is determined that the preparation process of the electrode plate is unqualified, and the reason why the preparation process of the electrode plate is unqualified is analyzed based on the internal resistance of the electrode plate; If the discharge rate is greater than the preset discharge rate, it is determined that the acid treatment is unqualified.

[0034] Specifically, in this embodiment, the preset discharge rate is obtained by pre-measurement, and a number of qualified plates are obtained, and the discharge rate of each plate is respectively detected to calculate the average value of the discharge rate to obtain the preset discharge rate.

[0035] Specifically, when the acid treatment is determined to be unqualified, the acid concentration during the acid treatment is adjusted based on the discharge rate, wherein the reduction in the acid concentration is positively correlated with the discharge rate.

[0036] In this embodiment, optionally, The discharge rate is compared with the first preset discharge rate and the second preset discharge rate, If the discharge rate is less than or equal to the first preset discharge rate, the acid concentration is adjusted to 0.9 times the initial value; If the discharge rate is greater than the first preset discharge rate and less than or equal to the second preset discharge rate, adjusting the acid concentration to 0.8 times the initial value; If the discharge rate is greater than the second preset discharge rate, adjusting the acid concentration to 0.7 times the initial value; The first preset discharge rate is 1.1 times the preset discharge rate, and the second preset discharge rate is 1.2 times the preset discharge rate.

[0037] In the present invention, whether the preparation process of the electrode plate is qualified is firstly analyzed based on the internal resistance of the electrode plate. When the internal resistance is between the first preset internal resistance and the second preset internal resistance, it is preliminarily determined that the preparation process of the electrode plate is unqualified, and a secondary determination is made on whether the preparation process of the electrode plate is qualified based on the discharge rate of the electrode plate. When the discharge rate of the electrode plate is large, considering that the concentration of the acid solution is too high, resulting in a decrease in the capacity of the electrode plate and an impact on the internal resistance, the concentration of acetic acid is adjusted according to the discharge rate to ensure the quality of the electrode plate.

[0038] See also Figure 4 As shown, it is a flow chart for analyzing the reasons why the preparation process of the electrode plate is unqualified.

[0039] Specifically, the reasons for the failure of the plate preparation process based on the plate internal resistance analysis include: Calculating the difference between the internal resistance and the second preset internal resistance to obtain a resistance difference, If the resistance difference is less than or equal to the first preset resistance difference, it is determined that the reason why the plate preparation process is unqualified is that the drying process is unqualified; If the resistance difference is greater than the first preset resistance difference and less than or equal to the second preset resistance difference, a secondary determination is made on the reason why the preparation process of the electrode plate is unqualified based on the capacity of the electrode plate; If the resistance difference is greater than the second preset resistance difference, it is determined that the reason why the preparation process of the electrode plate is unqualified is that the lead paste composition is uneven.

[0040] Specifically, in this embodiment, the first preset resistance difference is 0.15 times the second preset internal resistance, and the second preset resistance difference is 0.2 times the second preset internal resistance.

[0041] Specifically, when the drying process is determined to be unqualified, the ratio of the resistance difference to the first preset resistance difference is calculated, and the drying temperature during the drying process is adjusted based on the ratio, wherein the increase in the drying temperature is negatively correlated with the ratio.

[0042] In this embodiment, optionally, The ratio is compared with a first preset ratio and a second preset ratio, If the ratio is less than or equal to the first preset ratio, the drying temperature is adjusted to 1.2 times the initial value; If the ratio is greater than the first preset ratio and less than or equal to the second preset ratio, the drying temperature is adjusted to 1.15 times the initial value; If the ratio is greater than the second preset ratio, the drying temperature is adjusted to 1.05 times the initial value; Among them, the first preset ratio is selected in the interval [0.8, 0.85], and the second preset ratio is selected in the interval [0.9, 0.95].

[0043] Specifically, when the drying temperature is adjusted, the electrode plate is re-prepared according to the adjusted parameters, a number of test points are selected on the re-prepared electrode plate, the porosity of each test point is detected in turn, and the variance of the porosity of each test point is calculated. If the variance is greater than or equal to the preset variance, it is determined that the drying speed is too fast during the drying process; If the variance is smaller than the preset variance, it is determined that the preparation process of the electrode plate is qualified.

[0044] Specifically, in this embodiment, the preset variance is obtained by pre-measurement, and a number of qualified plates are obtained, and the variance of the porosity of each point to be measured on each plate is respectively calculated, and the variance mean is solved to obtain the preset variance.

[0045] Specifically, when it is determined that the drying speed during the drying process is too fast, the temperature change rate during the drying process is reduced based on the variance, wherein the reduction amplitude of the temperature change rate is positively correlated with the variance.

[0046] In this embodiment, optionally, The variance is compared with the first preset variance and the second preset variance, If the variance is less than or equal to the first preset variance, the temperature change rate is adjusted to 0.9 times the initial value; If the variance is greater than the first preset variance and less than or equal to the second preset variance, adjusting the temperature change rate to 0.85 times the initial value; If the variance is greater than the second preset variance, adjusting the temperature change rate to 0.8 times the initial value; The first preset variance is 1.13 times the preset variance, and the second preset variance is 1.25 times the preset variance.

[0047] In the present invention, when the drying temperature in the drying process is adjusted, the electrode plate is re-prepared according to the adjusted drying temperature, and the porosity of the re-prepared electrode plate is detected by a multi-point detection method. Considering that the excessively fast drying speed of the electrode plate will lead to uneven porosity of the lead paste, thereby affecting the infiltration effect of the electrolyte, reducing the ion transmission efficiency, and further increasing the internal resistance of the battery, the present invention determines the discrete degree of the porosity of each point on the electrode plate according to the variance of the porosity of each point, and then adjusts the changing speed of the drying temperature according to the discrete degree, reduces the temperature changing speed, thereby reducing the influence of the temperature change on the porosity of the lead paste, and further ensuring the quality of the electrode plate.

[0048] Specifically, the secondary determination of the reasons for the failure of the plate preparation process based on the capacity of the plate includes: Calculate the capacity difference between the expected capacity and the actual capacity of the plate, If the capacity difference is less than or equal to the preset capacity difference, it is determined that the preparation process of the electrode plate is unqualified, and the reason why the preparation process of the electrode plate is unqualified is analyzed based on the internal resistance of the electrode plate; If the capacity difference is greater than the preset capacity difference, it is determined that the acid treatment is unqualified.

[0049] Specifically, in this embodiment, the preset capacity difference is 0.2 to 0.25 times the expected capacity.

[0050] Specifically, when it is determined that the lead paste composition is uneven, the stirring time in the lead paste preparation process is adjusted based on the resistance difference, wherein the increase in the stirring time is positively correlated with the resistance difference.

[0051] In this embodiment, optionally, Compare the resistance difference with the primary resistance difference and the secondary resistance difference. If the resistance difference is less than or equal to the first-level resistance difference, adjust the stirring time to 1.1 times the initial value; If the resistance difference is greater than the primary resistance difference and less than or equal to the secondary resistance difference, the stirring time is adjusted to 1.15 times the initial value; If the resistance difference is greater than the secondary resistance difference, the stirring time is adjusted to 1.2 times the initial value; The first-level resistance difference is 1.05 times the second preset resistance difference, and the second-level resistance difference is 1.1 times the second preset resistance difference.

[0052] So far, the technical solutions of the present invention have been described in conjunction with the preferred embodiments shown in the accompanying drawings. However, it is easy for those skilled in the art to understand that the protection scope of the present invention is obviously not limited to these specific embodiments. Without departing from the principle of the present invention, those skilled in the art can make equivalent changes or substitutions to the relevant technical features, and the technical solutions after these changes or substitutions will fall within the protection scope of the present invention.

[0053] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A process for preparing a solid-state lead battery plate, characterized in that: include: Step S1, inputting lead powder into a stirring container, and sequentially adding dilute sulfuric acid and additives into the stirring container, and mixing to prepare a lead paste; Step S2, applying the lead paste to the grid, treating the grid with acid, and drying the acid treated grid to obtain a plate; Step S3, detecting the internal resistance and discharge rate of the electrode plate, analyzing whether the preparation process of the electrode plate is qualified according to the internal resistance of the electrode plate, and when it is preliminarily determined that the preparation process of the electrode plate is unqualified, making a secondary judgment on whether the preparation process of the electrode plate is qualified based on the discharge rate of the electrode plate, analyzing the reason for the unqualified preparation process of the electrode plate based on the internal resistance of the electrode plate, adjusting the corresponding parameters to the corresponding values ​​based on the analysis results, and re-preparing the electrode plate according to the adjusted parameters.

2. The process for preparing a solid-state lead battery plate according to claim 1, characterized in that: In step S3, analyzing whether the preparation process of the electrode plate is qualified according to the internal resistance of the electrode plate includes: If the internal resistance is less than or equal to the first preset internal resistance, it is determined that the preparation process of the electrode plate is qualified; If the internal resistance is greater than the first preset internal resistance and less than or equal to the second preset internal resistance, it is preliminarily determined that the preparation process of the electrode plate is unqualified, and a secondary determination is made on whether the preparation process of the electrode plate is qualified based on the discharge rate of the electrode plate; If the internal resistance is greater than the second preset internal resistance, it is determined that the manufacturing process of the electrode plate is unqualified, and the reason why the manufacturing process of the electrode plate is unqualified is analyzed based on the internal resistance of the electrode plate.

3. The process for preparing a solid-state lead battery plate according to claim 2, characterized in that: The secondary determination of whether the preparation process of the electrode plate is qualified based on the discharge rate of the electrode plate includes: If the discharge rate is less than or equal to the preset discharge rate, it is determined that the preparation process of the electrode plate is unqualified, and the reason why the preparation process of the electrode plate is unqualified is analyzed based on the internal resistance of the electrode plate; If the discharge rate is greater than the preset discharge rate, it is determined that the acid treatment is unqualified.

4. The process for preparing a solid-state lead battery plate according to claim 3, characterized in that: When the acid treatment is determined to be unqualified, the concentration of the acid solution during the acid treatment is adjusted based on the discharge rate, wherein the reduction range of the acid solution concentration is positively correlated with the discharge rate.

5. The process for preparing a solid-state lead battery plate according to claim 3, characterized in that: The reasons for the failure of the plate preparation process based on the plate internal resistance analysis include: Calculating the difference between the internal resistance and the second preset internal resistance to obtain a resistance difference, If the resistance difference is less than or equal to the first preset resistance difference, it is determined that the reason why the plate preparation process is unqualified is that the drying process is unqualified; If the resistance difference is greater than the first preset resistance difference and less than or equal to the second preset resistance difference, a secondary determination is made on the reason why the preparation process of the electrode plate is unqualified based on the capacity of the electrode plate; If the resistance difference is greater than the second preset resistance difference, it is determined that the reason why the preparation process of the electrode plate is unqualified is that the lead paste composition is uneven.

6. The process for preparing a solid-state lead battery plate according to claim 5, characterized in that: When the drying process is determined to be unqualified, the ratio of the resistance difference to the first preset resistance difference is calculated, and the drying temperature during the drying process is adjusted based on the ratio, wherein the increase in the drying temperature is negatively correlated with the ratio.

7. The process for preparing a solid-state lead battery plate according to claim 6, characterized in that: When the drying temperature is adjusted, the electrode plate is re-prepared according to the adjusted parameters, and several points to be tested are selected on the re-prepared electrode plate, and the porosity of each point to be tested is detected in turn, and the variance of the porosity of each point to be tested is calculated. If the variance is greater than or equal to the preset variance, it is determined that the drying speed is too fast during the drying process; If the variance is smaller than the preset variance, it is determined that the preparation process of the electrode plate is qualified.

8. The process for preparing a solid-state lead battery plate according to claim 7, characterized in that: When it is determined that the drying speed is too fast during the drying process, the temperature change rate during the drying process is reduced based on the variance, wherein the reduction amplitude of the temperature change rate is positively correlated with the variance.

9. The process for preparing a solid-state lead battery plate according to claim 5, characterized in that: The secondary determination of the reasons for the failure of the preparation process of the electrode plate based on the capacity of the electrode plate includes: Calculate the capacity difference between the expected capacity and the actual capacity of the plate, If the capacity difference is less than or equal to the preset capacity difference, it is determined that the preparation process of the electrode plate is unqualified, and the reason why the preparation process of the electrode plate is unqualified is analyzed based on the internal resistance of the electrode plate; If the capacity difference is greater than the preset capacity difference, it is determined that the acid treatment is unqualified.

10. The process for preparing a solid-state lead battery plate according to claim 5, characterized in that: When it is determined that the lead paste composition is uneven, the stirring time in the lead paste preparation process is adjusted based on the resistance difference, wherein the increase in the stirring time is positively correlated with the resistance difference.

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