A preparation process for a solid-state lead battery plate

Abstract

The present invention relates to the technical field of the production of lead-acid batteries, and particularly to a preparation process for a solid-state lead battery plate, comprising: inputting lead powder into a stirring container, sequentially adding dilute sulfuric acid and additives into the stirring container, and mixing to obtain lead paste; coating the lead paste onto a grid, performing an acid spraying treatment on the grid, and performing a drying treatment on the grid after acid spraying to obtain a plate; in the present invention, the plate is first prepared, the internal resistance of the obtained plate is detected, and whether the preparation process of the plate is qualified is analyzed according to the internal resistance of the plate. When the internal resistance of the plate is large, a secondary determination is made on whether the preparation process is qualified according to the discharge rate of the plate, so as to improve the control accuracy of the plate preparation process and the analysis accuracy of the preparation process. According to the analysis result, the present invention adjusts the corresponding parameters to the corresponding values, and prepares the plate again according to the adjusted parameters, thereby improving the preparation efficiency of the plate while ensuring the quality of the plate.

Description

Technical Field

[0001] The present invention relates to the technical field of the production of lead-acid batteries, and particularly to a preparation process for the plates of a solid lead battery. Background Art

[0002] The charge and discharge process of a solid lead battery is based on the electrochemical reaction of the active substances on the plates. When discharging, the lead dioxide on the positive plate gains electrons and reacts with the ions in the solid electrolyte to form lead sulfate, while converting chemical energy into electrical energy and releasing it. During charging, under the action of an external power source, lead sulfate is oxidized back to lead dioxide to store electrical energy again. The spongy lead on the negative plate loses electrons to form lead sulfate during discharging, and lead sulfate is reduced to spongy lead during charging to achieve the storage and release of electrical energy. In the prior art, by impregnating the plates in a silica sol liquid, after the plates are dried, the plates contain nano-silica particles with small particle size and large specific surface area, which can increase the apparent area of the substances in the plates 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 during the plate preparation process, low control precision in the preparation process will affect the plate quality, and the rework time is long, which affects the plate preparation efficiency.

[0003] Chinese Patent Application No.: 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) Prepare wet lead paste and coat the plates; (2) After coating the plates, perform acid spraying or paper covering on the obtained plates; (3) Perform surface drying on the plates after acid spraying or paper covering; (4) Perform curing drying on the plates after surface drying to obtain the lead-acid battery plates. In this invention, the plates are impregnated in a silica sol liquid, and after the plates are dried, the plates contain nano-silica particles with small particle size and large specific surface area, which can increase the apparent area of the substances in the plates, enhance the acid-scavenging ability of the substances in the plates, and improve the high-current discharge capacity and low-temperature discharge capacity of the lead-acid battery.

[0004] However, the prior art still has the following problems:

[0005] Due to the influence of various factors during the plate preparation process, low control precision in the preparation process will affect the plate quality, and the rework time is long, which affects the plate preparation efficiency. Summary of the Invention

[0006] Therefore, the present invention provides a preparation process for the plates of a solid lead battery to overcome the problems in the prior art that due to the influence of various factors during the plate preparation process, low control precision in the preparation process will affect the plate quality, the rework time is long, and it affects the plate preparation efficiency.

[0007] To achieve the above object, the present invention provides a preparation process for the plates of a solid lead battery. The process includes:

[0008] Step S1: Input lead powder into a stirring container, sequentially add dilute sulfuric acid and additives into the stirring container, and mix them to obtain lead paste.

[0009] Step S2: Coat the lead paste onto a grid, perform acid spraying treatment on the grid, and perform drying treatment on the acid-sprayed grid to obtain a plate.

[0010] Step S3: Detect the internal resistance and discharge rate of the plate. If the internal resistance is less than or equal to a first preset internal resistance, it is determined that the preparation process of the plate is qualified.

[0011] If the internal resistance is greater than the first preset internal resistance and less than or equal to a second preset internal resistance, a secondary determination is made on whether the preparation process of the plate is qualified based on the discharge rate of the plate. If the discharge rate is less than or equal to a preset discharge rate, it is determined that the preparation process of the plate is unqualified, and the reason for the unqualified preparation process of the plate is analyzed based on the internal resistance of the plate.

[0012] If the discharge rate is greater than the preset discharge rate, it is determined that the acid spraying treatment is unqualified.

[0013] If the internal resistance is greater than the second preset internal resistance, it is determined that the preparation process of the plate is unqualified, calculate the difference between the internal resistance and the second preset internal resistance to obtain a resistance difference.

[0014] If the resistance difference is less than or equal to a first preset resistance difference, it is determined that the reason for the unqualified preparation process of the plate is unqualified drying treatment.

[0015] If the resistance difference is greater than the first preset resistance difference and less than or equal to a second preset resistance difference, a secondary determination is made on the reason for the unqualified preparation process of the plate based on the capacity of the plate.

[0016] If the resistance difference is greater than the second preset resistance difference, it is determined that the reason for the unqualified preparation process of the plate is uneven lead paste composition.

[0017] Further, when it is determined that the acid spraying treatment is unqualified, the acid concentration in the acid spraying treatment process is adjusted based on the discharge rate, wherein the reduction amplitude of the acid concentration is positively correlated with the discharge rate.

[0018] Further, when it is determined that the drying treatment is unqualified, calculate the ratio of the resistance difference to the first preset resistance difference, and adjust the drying temperature in the drying treatment process based on the ratio, wherein the increase amplitude of the drying temperature is negatively correlated with the ratio.

[0019] Further, when the adjustment of the drying temperature is completed, prepare the plate again according to the adjusted parameters, select several measurement points to be measured on the plate prepared again, sequentially detect the porosity of each measurement point to be measured, and calculate the variance of the porosity of each measurement point to be measured.

[0020] If the variance is greater than or equal to a preset variance, it is determined that the drying speed is too fast during the drying process;

[0021] If the variance is less than the preset variance, it is determined that the preparation process of the electrode plate is qualified.

[0022] Further, when it is determined that the drying speed is too fast during the drying process, based on the variance, the temperature change rate during the drying process is reduced, and the reduction amplitude of the temperature change rate is positively correlated with the variance.

[0023] Further, the reason for the unqualified preparation process of the electrode plate is re-determined based on the capacity of the electrode plate, including:

[0024] Calculate the capacity difference between the expected capacity and the actual capacity of the electrode plate,

[0025] If the capacity difference is less than or equal to a preset capacity difference, it is determined that the preparation process of the electrode plate is unqualified, and the reason for the unqualified preparation process of the electrode plate is analyzed based on the internal resistance of the electrode plate;

[0026] If the capacity difference is greater than the preset capacity difference, it is determined that the acid drenching treatment is unqualified.

[0027] Further, when it is determined that the lead paste composition is uneven, the stirring duration during the lead paste preparation process is adjusted based on the resistance difference, and the increase amplitude of the stirring duration is positively correlated with the resistance difference.

[0028] Compared with the prior art, the beneficial effect of the present invention is 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 according to the internal resistance of the electrode plate. When the internal resistance of the electrode plate is large, whether the preparation process is qualified is re-determined according to the discharge rate of the electrode plate, so as to improve the control accuracy of the electrode 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 electrode plate according to the adjusted parameters, which improves the preparation efficiency of the electrode plate while ensuring the quality of the electrode plate.

[0029] Further, in the present invention, whether the preparation process of the electrode plate is qualified is initially analyzed according to 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 initially determined that the preparation process of the electrode plate is unqualified, and whether the preparation process of the electrode plate is qualified is re-determined according to 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 during acid drenching is too high, resulting in a decrease in the capacity of the electrode plate and an impact on the internal resistance, the acetic acid concentration is adjusted according to the discharge rate, so as to ensure the quality of the electrode plate.

[0030] Further, when the drying temperature adjustment in the drying process of the present invention 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 means of multi-point detection. Considering that too fast drying speed of the electrode plate will lead to uneven porosity of the lead paste, thus affecting the infiltration effect of the electrolyte, reducing the ion transport efficiency, and further causing an increase in the internal resistance of the battery. Therefore, the present invention determines the dispersion degree of the porosity at each point on the electrode plate according to the variance of the porosity at each point, and then adjusts the change speed of the drying temperature according to the dispersion degree, reduces the temperature change speed, thereby reducing the influence of temperature change on the porosity of the lead paste, and further ensuring the quality of the electrode plate. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] Figure 1 is a flowchart of the preparation process of the solid-state lead battery electrode plate;

[0032] Figure 2 is a flowchart for determining whether the preparation process of the electrode plate is qualified;

[0033] Figure 3 is a flowchart for secondary determination of whether the preparation process of the electrode plate is qualified;

[0034] Figure 4 is a flowchart for analyzing the reasons for the unqualified preparation process of the electrode plate. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0035] In order to make the objectives and advantages of the present invention clearer and more understandable, the present invention will be 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.

[0036] It should be noted that the data in this embodiment are all obtained through comprehensive analysis and evaluation of the historical data in the 6 months before this determination by the system described in the present invention and the corresponding historical determination results. Those skilled in the art can understand that the determination method of the system described in the present invention for a single above-mentioned parameter can be to select the value with the highest proportion according to the data distribution as the preset standard parameter, use weighted summation to obtain the value as the preset standard parameter, substitute each historical data into a specific formula and use the value obtained by this formula as the preset standard parameter or other selection methods, as long as it satisfies that the system described in the present invention can clearly define different specific situations in a single determination process through the obtained values.

[0037] The preferred embodiments of the present invention will be described below with reference to the accompanying drawings. Those skilled in the art should understand that these embodiments are only used to explain the technical principle of the present invention and do not limit the protection scope of the present invention.

[0038] It should be noted that in the description of the present invention, the terms indicating the direction or positional relationship such as "upper", "lower", "left", "right", "inner", "outer", etc. are based on the direction or positional relationship shown in the drawings. This is only 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 should not be construed as a limitation to the present invention.

[0039] In addition, it should be noted that in the description of the present invention, unless otherwise clearly specified and defined, the terms "installation", "connection", and "coupling" 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 directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two elements. For those skilled in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0040] Please refer to Figure 1 as shown, which is a flowchart of the preparation process of the solid-state lead battery plate.

[0041] The preparation process of the solid-state lead battery plate provided in this embodiment includes:

[0042] Step S1: Input lead powder into a stirring container, and sequentially add dilute sulfuric acid and additives to the stirring container, and mix to obtain lead paste.

[0043] Step S2: Coat the lead paste onto the grid, perform an acid spraying treatment on the grid, and perform a drying treatment on the acid-sprayed grid to obtain a plate.

[0044] Step S3: Detect the internal resistance and discharge rate of the plate, analyze whether the preparation process of the plate is qualified according to the internal resistance of the plate. When it is initially determined that the preparation process of the plate is unqualified, perform a secondary determination on whether the preparation process of the plate is qualified based on the discharge rate of the plate, analyze the reason for the unqualified preparation process of the plate based on the internal resistance of the plate, adjust the corresponding parameters to the corresponding values based on the analysis results, and re-prepare the plate according to the adjusted parameters.

[0045] Specifically, in this embodiment, the specific structure of the stirring container is not limited, and it only needs to be able to stir lead powder, dilute sulfuric acid, and additives, and the material of the stirring container does not affect the chemical properties of the components being stirred. The above belongs to the prior art and will not be elaborated here.

[0046] In the present invention, the electrode plates are first prepared, and the internal resistance of the prepared electrode plates is detected. Whether the preparation process of the electrode plates is qualified is analyzed based on the internal resistance of the electrode plates. When the internal resistance of the electrode plates is relatively large, a secondary determination is made on whether the preparation process is qualified according to the discharge rate of the electrode plates, thereby improving the control accuracy for the preparation process of the electrode plates and the analysis accuracy for the preparation process. According to the analysis results, the corresponding parameters are adjusted to the corresponding values, and the electrode plates are re-prepared according to the adjusted parameters. While ensuring the quality of the electrode plates, the preparation efficiency of the electrode plates is improved.

[0047] Please refer to Figure 2 as shown, which is a determination flowchart for analyzing whether the preparation process of the electrode plates is qualified.

[0048] Specifically, in the step S3, analyzing whether the preparation process of the electrode plates is qualified based on the internal resistance of the electrode plates includes:

[0049] 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 plates is qualified;

[0050] 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 plates is unqualified, and a secondary determination is made on whether the preparation process of the electrode plates is qualified based on the discharge rate of the electrode plates;

[0051] If the internal resistance is greater than the second preset internal resistance, it is determined that the preparation process of the electrode plates is unqualified, and the reason for the unqualified preparation process of the electrode plates is analyzed based on the internal resistance of the electrode plates.

[0052] Specifically, in this embodiment, the first preset internal resistance and the second preset internal resistance are obtained by pre-determination. A number of qualified solid lead battery electrode plates of the same model are obtained, the internal resistance of each electrode 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.

[0053] Please refer to Figure 3 as shown, which is a determination flowchart for making a secondary determination on whether the preparation process of the electrode plates is qualified.

[0054] Specifically, the secondary determination on whether the preparation process of the electrode plates is qualified based on the discharge rate of the electrode plates includes:

[0055] If the discharge rate is less than or equal to the preset discharge rate, it is determined that the preparation process of the electrode plates is unqualified, and the reason for the unqualified preparation process of the electrode plates is analyzed based on the internal resistance of the electrode plates;

[0056] If the discharge rate is greater than the preset discharge rate, it is determined that the acid drenching treatment is unqualified.

[0057] Specifically, in this embodiment, the preset discharge rate is obtained through preliminary measurement. A number of qualified electrode plates are acquired, the discharge rate of each electrode plate is detected respectively, and the average value of the discharge rates is calculated to obtain the preset discharge rate.

[0058] Specifically, when it is determined that the acid drenching treatment is unqualified, the acid concentration during the acid drenching process is adjusted based on the discharge rate, wherein the reduction amplitude of the acid concentration is positively correlated with the discharge rate.

[0059] In this embodiment, optionally,

[0060] The discharge rate is compared with a first preset discharge rate and a second preset discharge rate.

[0061] 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;

[0062] If the discharge rate is greater than the first preset discharge rate and less than or equal to the second preset discharge rate, the acid concentration is adjusted to 0.8 times the initial value;

[0063] If the discharge rate is greater than the second preset discharge rate, the acid concentration is adjusted to 0.7 times the initial value;

[0064] Wherein, 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.

[0065] In the present invention, first, whether the preparation process of the electrode plate is qualified is preliminarily analyzed based on the internal resistance of the electrode plate. When the internal resistance is between a first preset internal resistance and a second preset internal resistance, it is preliminarily determined that the preparation process of the electrode plate is unqualified, and the discharge rate of the electrode plate is used to conduct a secondary determination on whether the preparation process of the electrode plate is qualified. When the discharge rate of the electrode plate is relatively large, considering that the excessive concentration of the acid drenching acid solution leads to a reduction in the capacity of the electrode plate and an impact on the internal resistance, the acetic acid concentration is adjusted according to the discharge rate, thereby ensuring the quality of the electrode plate.

[0066] Please refer to Figure 4 as shown, which is a determination flow chart for analyzing the reasons for the unqualified preparation process of the electrode plate.

[0067] Specifically, the analysis of the reasons for the unqualified preparation process of the electrode plate based on the internal resistance of the electrode plate includes:

[0068] Calculate the difference between the internal resistance and the second preset internal resistance to obtain a resistance difference.

[0069] If the resistance difference is less than or equal to a first preset resistance difference, it is determined that the reason for the unqualified preparation process of the electrode plate is unqualified drying treatment;

[0070] If the resistance difference is greater than the first preset resistance difference and less than or equal to the second preset resistance difference, then a secondary determination is made on the reason for the unqualified preparation process of the plate based on the capacity of the plate;

[0071] If the resistance difference is greater than the second preset resistance difference, then it is determined that the reason for the unqualified preparation process of the plate is uneven paste composition.

[0072] 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.

[0073] Specifically, when it is determined that the drying treatment is unqualified, calculate the ratio of the resistance difference to the first preset resistance difference, and adjust the drying temperature during the drying process based on the ratio. Among them, the increase amplitude of the drying temperature is negatively correlated with the ratio.

[0074] In this embodiment, optionally,

[0075] Compare the ratio with the first preset ratio and the second preset ratio,

[0076] If the ratio is less than or equal to the first preset ratio, then adjust the drying temperature to 1.2 times the initial value;

[0077] If the ratio is greater than the first preset ratio and less than or equal to the second preset ratio, then adjust the drying temperature to 1.15 times the initial value;

[0078] If the ratio is greater than the second preset ratio, then adjust the drying temperature to 1.05 times the initial value;

[0079] 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].

[0080] Specifically, when the adjustment of the drying temperature is completed, prepare the plate again according to the adjusted parameters. Select several measurement points to be measured on the plate prepared again, and sequentially detect the porosity of each measurement point to be measured, and calculate the variance of the porosity of each measurement point to be measured.

[0081] If the variance is greater than or equal to the preset variance, then it is determined that the drying speed is too fast during the drying process;

[0082] If the variance is less than the preset variance, then it is determined that the preparation process of the plate is qualified.

[0083] Specifically, in this embodiment, the preset variance is obtained by pre-measurement. Obtain several qualified plates, respectively obtain the variance of the porosity of each measurement point to be measured on each plate, and solve the mean value of the variance to obtain the preset variance.

[0084] Specifically, 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, where the reduction amplitude of the temperature change rate is positively correlated with the variance.

[0085] In this embodiment, optionally,

[0086] The variance is compared with a first preset variance and a second preset variance.

[0087] 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;

[0088] If the variance is greater than the first preset variance and less than or equal to the second preset variance, the temperature change rate is adjusted to 0.85 times the initial value;

[0089] If the variance is greater than the second preset variance, the temperature change rate is adjusted to 0.8 times the initial value;

[0090] Among them, the first preset variance is 1.13 times the preset variance, and the second preset variance is 1.25 times the preset variance.

[0091] In the present invention, when the adjustment of the drying temperature during 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 means of multi-point detection. Considering that too fast drying speed of the electrode plate will lead to uneven porosity of the lead paste, which will affect the infiltration effect of the electrolyte, reduce the ion transport efficiency, and then lead to an increase in the internal resistance of the battery. Therefore, the present invention determines the dispersion degree of the porosity at each point on the electrode plate according to the variance of the porosity at each point, and then adjusts the change speed of the drying temperature according to the dispersion degree, reduces the temperature change speed, so as to reduce the influence of temperature change on the porosity of the lead paste, and further ensure the quality of the electrode plate.

[0092] Specifically, the secondary determination of the reason for the unqualified preparation process of the electrode plate based on the capacity of the electrode plate includes:

[0093] Calculate the capacity difference between the expected capacity and the actual capacity of the electrode plate.

[0094] 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 for the unqualified preparation process of the electrode plate is analyzed based on the internal resistance of the electrode plate;

[0095] If the capacity difference is greater than the preset capacity difference, it is determined that the acid drenching treatment is unqualified.

[0096] Specifically, in this embodiment, the preset capacity difference is 0.2 to 0.25 times the expected capacity.

[0097] Specifically, when it is determined again that the paste composition is uneven, the stirring duration in the paste preparation process is adjusted based on the resistance difference, wherein the increase amplitude of the stirring duration is positively correlated with the resistance difference.

[0098] In this embodiment, optionally,

[0099] The resistance difference is compared with the first-level resistance difference and the second-level resistance difference.

[0100] If the resistance difference is less than or equal to the first-level resistance difference, the stirring duration is adjusted to 1.1 times the initial value;

[0101] If the resistance difference is greater than the first-level resistance difference and less than or equal to the second-level resistance difference, the stirring duration is adjusted to 1.15 times the initial value;

[0102] If the resistance difference is greater than the second-level resistance difference, the stirring duration is adjusted to 1.2 times the initial value.

[0103] Wherein, 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.

[0104] So far, the technical solution of the present invention has been described in conjunction with the preferred embodiments shown in the 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.

[0105] The above are only the preferred embodiments of the present invention and are not used to limit the present invention; for those skilled in the art, the present invention can have various changes and modifications. Any modification, equivalent substitution, 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 preparation process for a solid-state lead battery plate, characterized in that, Including: Step S1: Input lead powder into a stirring container, sequentially add dilute sulfuric acid and additives into the stirring container, and mix them to obtain lead paste. Step S2: Coat the lead paste onto a grid, perform an acid drenching treatment on the grid, and perform a drying treatment on the acid-drenched grid to obtain a plate. Step S3: Detect the internal resistance and discharge rate of the plate. If the internal resistance is less than or equal to a first preset internal resistance, it is determined that the preparation process of the plate is qualified. If the internal resistance is greater than the first preset internal resistance and less than or equal to a second preset internal resistance, a secondary determination is made on whether the preparation process of the plate is qualified based on the discharge rate of the plate. If the discharge rate is less than or equal to a preset discharge rate, it is determined that the preparation process of the plate is unqualified, and the reason for the unqualified preparation process of the plate is analyzed based on the internal resistance of the plate. If the discharge rate is greater than the preset discharge rate, it is determined that the acid drenching treatment is unqualified. If the internal resistance is greater than the second preset internal resistance, it is determined that the preparation process of the plate is unqualified, calculate 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 a first preset resistance difference, it is determined that the reason for the unqualified preparation process of the plate is unqualified drying treatment. If the resistance difference is greater than the first preset resistance difference and less than or equal to a second preset resistance difference, a secondary determination is made on the reason for the unqualified preparation process of the plate based on the capacity of the plate. If the resistance difference is greater than the second preset resistance difference, it is determined that the reason for the unqualified preparation process of the plate is uneven lead paste composition.

2. The preparation process of the solid-state lead battery plate according to claim 1, characterized in that, When it is determined that the acid drenching treatment is unqualified, the acid concentration during the acid drenching process is adjusted based on the discharge rate. Among them, the reduction amplitude of the acid concentration is positively correlated with the discharge rate.

3. The preparation process of the solid-state lead battery plate according to claim 1, characterized in that, When it is determined that the drying treatment is unqualified, calculate the ratio of the resistance difference to the first preset resistance difference, and adjust the drying temperature during the drying treatment based on the ratio. Among them, the increase amplitude of the drying temperature is negatively correlated with the ratio.

4. The preparation process of the solid-state lead battery plate according to claim 3, characterized in that, When the adjustment of the drying temperature is completed, prepare the plate again according to the adjusted parameters. Select several measurement points to be measured on the newly prepared plate, sequentially detect the porosity of each measurement point to be measured, and calculate the variance of the porosity of each measurement point to be measured. If the variance is greater than or equal to a preset variance, it is determined that the drying speed is too fast during the drying treatment. If the variance is less than the preset variance, it is determined that the preparation process of the plate is qualified.

5. The preparation process of the solid-state lead battery electrode plate according to claim 4, characterized in that, When it is determined that the drying speed is too fast during the drying treatment, the temperature change rate during the drying treatment is reduced based on the variance. Among them, the reduction amplitude of the temperature change rate is positively correlated with the variance.

6. The preparation process of the solid-state lead battery plate according to claim 1, characterized in that, The secondary determination of the reason for the unqualified preparation process of the plate 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 a preset capacity difference, it is determined that the preparation process of the plate is unqualified, and the reason for the unqualified preparation process of the plate is analyzed based on the internal resistance of the plate. If the capacity difference is greater than the preset capacity difference, it is determined that the acid drenching treatment is unqualified.

7. The preparation process of the solid-state lead battery plate according to claim 1, characterized in that, When it is determined that the lead paste composition is uneven, the stirring duration during the lead paste preparation process is adjusted based on the resistance difference. Among them, the increase amplitude of the stirring duration is positively correlated with the resistance difference.

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