Cleaning process suitable for formation and offline of lead-acid battery
By preparing a cleaning solution and combining it with a multi-step cleaning process, the problem of residual acid and dirt after lead-acid battery formation was solved, achieving thorough cleaning of the battery surface and performance improvement.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- SHUANGDENG GRP CO LTD
- Filing Date
- 2025-12-24
- Publication Date
- 2026-04-17
AI Technical Summary
After lead-acid batteries are formed, some residual acid and dirt remain on the battery surface, which affects the user experience.
A cleaning solution is prepared by mixing alkali, surfactant, and chelating agent with water. The solution is then used to clean residual acid and dirt from the surface of lead-acid batteries through steps such as spraying, washing with water, air drying, baking, and compressed air cleaning, combined with high-current detection.
It effectively removes residual acid and dirt from the battery surface, improving user experience and ensuring battery performance and quality.
Smart Images
Figure CN121869759A_ABST
Abstract
Description
Technical Field
[0001] This disclosure belongs to the field of lead-acid battery technology, specifically relating to a cleaning process suitable for lead-acid battery formation line cleaning. Background Technology
[0002] Lead-acid batteries have been developed for over 160 years and are widely used in energy storage and power applications. They are one of the most stable electrochemical energy storage technologies. The manufacturing process of commonly used lead-acid batteries involves multiple steps, including plate assembly, formation, and other processes. Even after formation and the installation of the safety valve, some residual acid may still adhere to the battery surface, and dirt may remain around the edges, ultimately leading to a poor user experience. Summary of the Invention This disclosure aims to at least solve one of the technical problems existing in the prior art, and to provide a cleaning process suitable for lead-acid battery formation line.
[0003] This disclosure provides a cleaning process suitable for the offline formation line of lead-acid batteries, the process including: A cleaning solution is prepared by mixing an alkali, a surfactant, a chelating agent, and water. The cleaning solution is used to spray and clean the surface of the lead-acid battery to be cleaned. The lead-acid battery to be cleaned is washed with water; The lead-acid battery to be cleaned is air-dried; The lead-acid battery to be cleaned is dried. The lead-acid battery to be cleaned is cleaned with compressed air; The lead-acid battery to be cleaned was subjected to high-current testing. Optionally, the content of the alkali agent is 10-50 parts; The surfactant content is 5-20 parts; The content of the chelating agent is 2-15 parts; The water content is 50-250 parts.
[0004] Optionally, the alkaline agent is at least one selected from sodium hydroxide, sodium carbonate, potassium hydroxide, potassium carbonate, and sodium metasilicate.
[0005] Optionally, the surfactant is at least one of sodium alkylaryl sulfonate, sodium dodecyl sulfonate, sodium dodecylbenzene sulfonate, and isomeric alcohol ether.
[0006] Optionally, the chelating agent is at least one of trisodium alanine diacetate, polyaspartic acid, tetrasodium glutamate diacetate, and hexamethylenediaminetetramethylphosphonic acid.
[0007] Optionally, the pH of the cleaning solution is 8-12.
[0008] Optionally, the cleaning solution is used to spray and clean the surface of the lead-acid battery to be cleaned, including: The cleaning solution is delivered to the roller brush device through a pipeline. The roller brush device is connected to a water tank to spray the cleaning solution to clean the residual acid and dirt on the surface of the lead-acid battery to be cleaned.
[0009] Optionally, the duration of spraying the cleaning solution onto the surface of the lead-acid battery to be cleaned is 2-10 seconds. The lead-acid battery to be cleaned shall be washed with water for 2-10 seconds; The lead-acid battery to be cleaned is air-dried for 5-15 seconds.
[0010] Optionally, the lead-acid battery to be cleaned is cleaned with compressed air for 5-10 seconds; the lead-acid battery to be cleaned is dried at a temperature of 50-100°C for 3-10 seconds.
[0011] Optionally, the lead-acid battery to be cleaned is subjected to a high-current discharge test with a discharge current of 400-1000A and a discharge duration of 3-10 seconds.
[0012] This disclosure provides a cleaning process suitable for lead-acid battery formation line cleaning. The cleaning process includes: preparing a cleaning solution by stirring an alkali, a surfactant, a chelating agent, and water; spraying the cleaning solution onto the surface of the lead-acid battery to be cleaned; rinsing the lead-acid battery with water; air-drying the lead-acid battery; baking the lead-acid battery; cleaning the lead-acid battery with compressed air; and performing high-current testing on the lead-acid battery. This disclosure, by formulating the cleaning solution with alkali, surfactant, chelating agent, and water, achieves a better synergistic cleaning effect through the combined use of these components, effectively cleaning residual acid and dirt from the battery surface and improving the user experience. Attached Figure Description
[0013] Figure 1 This is a flowchart illustrating a specific embodiment of the cleaning process applicable to the formation line of lead-acid batteries. Figure 2 This is a schematic diagram illustrating a cleaning process applicable to the formation line of lead-acid batteries, according to a specific embodiment of this disclosure. Detailed Implementation
[0014] To enable those skilled in the art to better understand the technical solutions of this disclosure, the disclosure will be further described in detail below with reference to the accompanying drawings and specific embodiments. It should be understood that the specific embodiments described herein are only used to explain this disclosure and represent a part of the embodiments of this disclosure, not all of them. All other embodiments obtained by those skilled in the art based on the embodiments of this disclosure without creative effort are within the protection scope of this disclosure.
[0015] As shown in Figure 1 and Figure 2 As shown, this disclosure provides a cleaning process S100 suitable for lead-acid battery formation line cleaning, specifically including the following steps S110~S170: S110. Prepare a cleaning solution by mixing alkali, surfactant, chelating agent and water.
[0016] Specifically, an alkali, surfactant, chelating agent and water are added and stirred in sequence to prepare a cleaning solution, which is placed in a cleaning solution tank and sent to the roller brush device through a pipeline.
[0017] In some preferred embodiments, the pH of the cleaning solution is 8-12, which can better remove residual acid and dirt without damaging the battery surface.
[0018] In some preferred embodiments, the content of the alkali is 10-50 parts, for example, preferably 10 parts, 20 parts, 30 parts, 40 parts, 50 parts, etc., and the alkali is at least one selected from sodium hydroxide, sodium carbonate, potassium hydroxide, potassium carbonate, and sodium metasilicate. The alkali is mainly used to neutralize the acid solution and stabilize the pH, so as to avoid the cleaning effect being affected by changes in pH.
[0019] In other preferred embodiments, the surfactant content is 5-20 parts, for example, preferably 5 parts, 10 parts, 15 parts, 20 parts, etc., and the surfactant is at least one selected from sodium alkylaryl sulfonate, sodium dodecyl sulfonate, sodium dodecylbenzene sulfonate, and isomeric alcohol ethers. Adding a surfactant can reduce the surface tension of water, improve detergency, and make impurities easier to remove.
[0020] In some preferred embodiments, the content of the chelating agent is 2-15 parts, for example, preferably 2 parts, 5 parts, 10 parts, 15 parts, etc., and the chelating agent is at least one selected from trisodium alanine diacetate, polyaspartic acid, tetrasodium glutamate diacetate, and hexamethylenediaminetetramethylenephosphonic acid. The chelating agent can improve the stability of the surfactant, and the combined use of the chelating agent and the surfactant can produce a better synergistic cleaning effect.
[0021] In some other preferred embodiments, the water content is 50-250 parts, for example, 50 parts, 100 parts, 150 parts, 220 parts, 250 parts, etc. are preferred.
[0022] In this embodiment, the cleaning effect is effectively improved through the synergistic effect of multiple components, thus avoiding corrosion of the battery surface.
[0023] S120. Use cleaning solution to spray and clean the surface of the lead-acid battery to be cleaned.
[0024] Specifically, the battery to be cleaned is sprayed with cleaning fluid through a water tank via a roller brush device to remove residual acid from its surface. The rinsing time of the roller brush device is 2-10 seconds, that is, the surface of the lead-acid battery is cleaned with cleaning fluid for 2-10 seconds, for example, 2 seconds, 5 seconds, 8 seconds, 10 seconds, etc. are preferred.
[0025] In this embodiment, the lead-acid battery can be cleaned by adding a self-made cleaning solution to the roller brush device. By cleaning with the cleaning solution before processes such as water washing and air drying, the problem of residual acid and dirt on the surface of the lead-acid battery can be solved, thereby improving cleaning efficiency and saving subsequent cleaning time.
[0026] S130. Wash the lead-acid battery to be cleaned with water.
[0027] Specifically, the lead-acid battery to be cleaned is washed with water as it passes through the water washing channel. The water washing channel takes 2-10 seconds, for example, 2 seconds, 5 seconds, 8 seconds, 10 seconds, etc. are preferred.
[0028] This embodiment can remove residual acid and impurities from the battery surface by washing with water, preventing acid residue from corroding the battery casing and surrounding components, and creating clean surface conditions for subsequent processes.
[0029] S140. Dry the lead-acid battery to be cleaned.
[0030] Specifically, the lead-acid batteries to be cleaned are dried through a drying channel for 5-15 seconds, such as 5 seconds, 7 seconds, 10 seconds, or 15 seconds.
[0031] This embodiment can initially remove a large amount of moisture from the battery surface by air drying, reducing the burden and time of subsequent drying, and reducing the risk of short circuits caused by residual moisture in the battery.
[0032] S150. Dry the lead-acid battery to be cleaned.
[0033] Specifically, the lead-acid batteries to be cleaned pass through a drying channel, and the drying temperature of the channel is adjusted to reach a suitable drying temperature for the battery surface. The drying temperature of the drying channel is 50-100℃, for example, 50℃, 70℃, 90℃, 100℃, etc. are preferred, and the drying time is 3-10 seconds, for example, 3 seconds, 5 seconds, 8 seconds, 10 seconds, etc. Under this temperature and time, the battery surface can be dried without damaging the battery performance.
[0034] This embodiment can remove moisture from the battery surface and crevices by further drying, ensuring that the battery is in a dry environment, improving battery performance stability and lifespan, and avoiding abnormal internal chemical reactions caused by moisture.
[0035] S160. Compressed air is used to clean the lead-acid battery to be cleaned.
[0036] Specifically, the battery to be cleaned is cleaned by a compressed air blowing device, wherein the compressed air blowing device blows for 5-10 seconds, for example, 5 seconds, 7 seconds, 9 seconds, 10 seconds, etc. are preferred.
[0037] This embodiment uses compressed air to blow away residual microparticles, dust, and other impurities on the battery surface, keeping the battery surface clean and preventing impurities from affecting battery performance and appearance quality.
[0038] S170. Perform a high-current test on the lead-acid battery to be cleaned. Specifically, the battery to be cleaned is subjected to high-current detection by a high-current detection device. The high-current detection device has a discharge current of 400-1000A, such as 400A, 600A, 800A, or 1000A, and a discharge duration of 3-10 seconds, such as 3 seconds, 5 seconds, 8 seconds, or 10 seconds.
[0039] This implementation method simulates the performance of a battery under high-current discharge conditions to test whether key performance indicators such as internal resistance and capacity meet the requirements, screens out batteries with poor performance or potential problems, better eliminates potentially hazardous batteries, and ensures the quality of batteries leaving the factory.
[0040] The following will further illustrate the cleaning process applicable to the lead-acid battery formation line with specific embodiments: Example 1 This example uses the cleaning of a 105Ah start-stop battery after its formation process as an example. The cleaning process includes the following steps: S1. Prepare the cleaning solution by mixing 10 parts sodium hydroxide, 30 parts sodium carbonate, 10 parts sodium metasilicate, 15 parts sodium alkyl aryl sulfonate, 5 parts sodium dodecyl sulfonate, 2 parts tetrasodium glutamate diacetate (GLDA), and 100 parts water. Stir well and adjust the pH to 10-11. After preparation, add the solution to the washing tank. The washing tank is connected to the roller brush device through a pipeline to deliver the cleaning solution.
[0041] S2. After initial pre-washing, the start-stop battery passes through a roller brush device, with the roller brush being rinsed for 7 seconds.
[0042] S3. The start-stop battery is conveyed to the washing device via roller conveyor, and the washing time is 7 seconds.
[0043] S4. The start-stop battery is conveyed to the drying device via roller conveyor, and the drying time is 6 seconds.
[0044] S5. The start-stop battery is conveyed to the drying device via roller conveyor. The drying temperature is 65℃ and the drying time is 6 seconds.
[0045] S6. The start-stop battery is conveyed to the compressed air blowing device via roller conveyor. The blowing time is 6 seconds. Air is blown onto the top cover and exhaust hole to remove residual liquid from the gaps.
[0046] S7. The start-stop battery is conveyed to the high current detection device via roller conveyor. The high current setting is 700A, and the discharge time is 6 seconds.
[0047] Furthermore, 50 normalized 105Ah batteries (including venting channels) and 50 105Ah batteries with sludge applied to their sides and top cover were selected and cleaned using the cleaning process described in this embodiment. Residual acid was measured using pH test paper, and the detection range included the battery's sides and surface, the gap between the battery safety valve and the casing, and the venting channel. For dirt detection, the cleanliness and shine of the battery surface and sides were observed. The results are shown in Table 1.
[0048] Example 2 This example uses the cleaning of a 105Ah start-stop battery after its formation process as an example. The cleaning process includes the following steps: S1. Prepare the cleaning solution by selecting 20 parts sodium carbonate, 20 parts potassium carbonate, 20 parts sodium dodecylbenzenesulfonate, 2 parts hexamethylenediaminetetramethylenephosphonic acid (HDTMPA), and 220 parts water. Stir well and adjust the pH to 8-9. After preparation, add the solution to the washing tank. The washing tank is connected to the roller brush device through a pipeline to deliver the cleaning solution.
[0049] The other steps are the same as in Example 1.
[0050] Furthermore, 50 normalized 105Ah batteries (including venting channels) and 50 105Ah batteries with sludge applied to their sides and top cover were selected and cleaned using the cleaning process described in this embodiment. Residual acid was measured using pH test paper, and the detection range included the battery's sides and surface, the gap between the battery safety valve and the casing, and the venting channel. For dirt detection, the cleanliness and shine of the battery surface and sides were observed. The results are shown in Table 1.
[0051] Example 3 This example uses the cleaning of a 105Ah start-stop battery after its formation process as an example. The cleaning process includes the following steps: S1. Prepare the cleaning solution by mixing 10 parts sodium hydroxide, 30 parts sodium carbonate, 10 parts sodium metasilicate, 15 parts sodium alkyl aryl sulfonate, 5 parts sodium dodecyl sulfonate, 2 parts tetrasodium glutamate diacetate (GLDA), and 100 parts water. Stir well and adjust the pH to 10-11. After preparation, add the solution to the washing tank. The washing tank is connected to the roller brush device through a pipeline to deliver the cleaning solution.
[0052] S2. After initial pre-washing, the start-stop battery passes through a roller brush device, with the roller brush being rinsed for 3 seconds.
[0053] S3. The start-stop battery is conveyed to the washing device via roller conveyor, and the washing time is 3 seconds.
[0054] S4. The start-stop battery is conveyed to the drying device via roller conveyor, and the drying time is 5 seconds.
[0055] S5. The start-stop battery is conveyed to the drying device via roller conveyor. The drying temperature is 50℃ and the drying time is 5 seconds.
[0056] S6. The start-stop battery is conveyed to the compressed air blowing device via roller conveyor. The blowing time is 5 seconds. Air is blown onto the top cover and exhaust hole to remove residual liquid from the gaps.
[0057] S7. The start-stop battery is conveyed to the high current detection device via roller conveyor. The high current setting is 900A, and the discharge time is 4 seconds.
[0058] Furthermore, 50 normalized 105Ah batteries (including venting channels) and 50 105Ah batteries with sludge applied to their sides and top cover were selected and cleaned using the cleaning process described in this embodiment. Residual acid was measured using pH test paper, and the detection range included the battery's sides and surface, the gap between the battery safety valve and the casing, and the venting channel. For dirt detection, the cleanliness and shine of the battery surface and sides were observed. The results are shown in Table 1.
[0059] Comparative Example 1 The cleaning solution in this example is water, and the cleaning process is the same as in Example 1.
[0060] Further, similar to Example 1, 50 normalized 105Ah batteries (including venting channels) and 50 105Ah batteries with sludge applied to their sides and top cover were selected and cleaned using the cleaning process of this comparative example. Residual acid was measured using pH test paper, and the detection range included the battery sides and surface, the gap between the battery safety valve and the casing, and the venting channel. For dirt detection, the cleanliness and shine of the battery surface and sides were observed. The results are shown in Table 1.
[0061] Comparative Example 2 In this example, the cleaning solution is water. In step S1, water is used for rinsing, and the other steps are the same as in Example 1.
[0062] Further, similar to Example 1, 50 normalized 105Ah batteries (including venting channels) and 50 105Ah batteries with sludge applied to their sides and top cover were selected and cleaned using the cleaning process of this comparative example. Residual acid was measured using pH test paper, and the detection range included the battery sides and surface, the gap between the battery safety valve and the casing, and the venting channel. For dirt detection, the cleanliness and shine of the battery surface and sides were observed. The results are shown in Table 1.
[0063] Table 1. Test results of each embodiment and comparative example.
[0064] In summary, based on Examples 1-3 and Comparative Examples 1-2, Example 1 (0 dirt / 0 residual acid) > Example 2 (0 dirt / 2 residual acid) > Example 3 (3 dirt / 5 residual acid). This demonstrates that the cleaning solution disclosed in this invention can effectively clean residual acid and dirt from the battery surface, with significantly better cleaning results than the comparative examples, verifying the effectiveness of the cleaning solution formulation. Specifically, the composite alkali agent + mixed surfactant used in Example 1 exhibits the best synergistic effect, while Example 3 achieves rapid cleaning. Furthermore, rinsing with a roller brush device improves rinsing efficiency and reduces residual acid and dirt on the battery surface compared to water rinsing.
[0065] This disclosure proposes a cleaning process suitable for the offline formation line of lead-acid batteries, which has the following advantages compared to the prior art: I. This disclosure describes a cleaning solution formulated with alkali, surfactant, chelating agent and water. Through the combined action of these components, a better synergistic cleaning effect can be achieved, effectively reducing residual acid and dirt on the battery surface.
[0066] Second, this disclosure improves the cleaning solution by adjusting the pH to 8-12, thereby better cleaning residual acid and dirt without damaging the battery surface.
[0067] Third, by controlling the time spent in the roller brush and water washing channel to 5-10 seconds, this disclosure provides sufficient time to remove reaction residue.
[0068] Fourth, this disclosure achieves the goal of drying the battery surface without damaging the battery performance by adjusting the drying temperature to 50-100℃ and the drying time to 5-10s.
[0069] V. This disclosure, by controlling the compressed air blowing time to 5-10 seconds, can thoroughly remove residual liquid from the gap between the safety valve and the battery casing.
[0070] VI. This disclosure, by setting the discharge current of the high-current detection device to 500-1000A and the discharge time to 3-10s, can better eliminate potentially hazardous batteries.
[0071] It is understood that the above embodiments are merely exemplary embodiments used to illustrate the principles of this disclosure, and this disclosure is not limited thereto. For those skilled in the art, various modifications and improvements can be made without departing from the spirit and substance of this disclosure, and these modifications and improvements are also considered to be within the scope of protection of this disclosure.
Claims
1. A process for cleaning lead acid battery formation downline, characterized in that, The process includes: A cleaning solution is prepared by mixing an alkali, a surfactant, a chelating agent, and water. The cleaning solution is used to spray and clean the surface of the lead-acid battery to be cleaned. The lead-acid battery to be cleaned is washed with water; The lead-acid battery to be cleaned is air-dried; The lead-acid battery to be cleaned is dried. The lead-acid battery to be cleaned is cleaned with compressed air; A high-current test was performed on the lead-acid battery to be cleaned.
2. A process according to claim 1, characterized in that, The content of the alkali agent is 10-50 parts; The surfactant content is 5-20 parts; The content of the chelating agent is 2-15 parts; The water content is 50-250 parts.
3. A process according to claim 1, characterized in that, The alkaline agent is at least one of sodium hydroxide, sodium carbonate, potassium hydroxide, potassium carbonate, and sodium metasilicate.
4. The process as claimed in claim 1, wherein, The surfactant is at least one of sodium alkylaryl sulfonate, sodium dodecyl sulfonate, sodium dodecylbenzene sulfonate, and isomeric alcohol ether.
5. The cleaning process for lead-acid battery formation line as described in claim 1, characterized in that, The chelating agent is at least one of trisodium alanine diacetate, polyaspartic acid, tetrasodium glutamate diacetate, and hexamethylenediaminetetramethylphosphonic acid.
6. The cleaning process for lead-acid battery formation line as described in claim 1, characterized in that, The pH of the cleaning solution is 8-12.
7. The method according to any one of claims 1 to 6 is applicable to the cleaning process of lead-acid battery formation line, characterized in that, The cleaning solution is used to spray and clean the surface of the lead-acid battery to be cleaned, including: The cleaning solution is delivered to the roller brush device through a pipeline. The roller brush device is connected to a water tank to spray the cleaning solution to clean the residual acid and dirt on the surface of the lead-acid battery to be cleaned.
8. The cleaning process for lead-acid battery formation line as described in any one of claims 1 to 6, characterized in that, The time for spraying the cleaning solution onto the surface of the lead-acid battery to be cleaned is 2-10 seconds. The lead-acid battery to be cleaned shall be washed with water for 2-10 seconds; The lead-acid battery to be cleaned is air-dried for 5-15 seconds.
9. The cleaning process for lead-acid battery formation line as described in any one of claims 1 to 6, characterized in that, The lead-acid battery to be cleaned is cleaned with compressed air for 5-10 seconds; the lead-acid battery to be cleaned is dried at a temperature of 50-100℃ for 3-10 seconds.
10. The cleaning process for lead-acid battery formation line as described in any one of claims 1 to 6, characterized in that, The lead-acid battery to be cleaned is subjected to a high-current discharge test with a discharge current of 400-1000A and a discharge duration of 3-10 seconds.