A method and system for forming a lead-acid battery plate

Abstract

The present invention protects a method for forming a lead-acid battery plate, comprising the following steps: partially forming a green plate to obtain a partially formed plate; and forming the partially formed plate and a matching plate. The present invention also protects a system for forming a lead-acid battery plate. The forming method and system of the present invention can ensure the plate performance of the green plate after formation.

Description

(I) Technical field

[0001] The invention relates to the field of lead-acid batteries, in particular to the formation of lead-acid batteries. (II) Background technology

[0002] There are two methods for forming the lead-acid battery plates: external formation and internal formation. The external formation is to place the positive and negative raw plates into an open electrolyte tank for formation; the internal formation is to place the positive and negative raw plates into a shell of the lead-acid battery, and add electrolyte into the shell for formation. In the existing formation method, due to factors such as the amount of paste applied to the positive and negative plates, the thickness and number of the plates, the time required for the positive and negative plates to complete the formation under the same formation conditions is different. If the positive plate is formed first, the negative plate needs to be further formed, which will cause the positive plate to precipitate oxygen. If the negative plate is formed first, the positive plate needs to be further formed, which will cause the negative plate to precipitate hydrogen. This affects the formation effect of the positive or negative plate on the one hand, and also causes a waste of formation electricity on the other hand. (III) Summary of the invention

[0003] The invention protects a method for forming a lead-acid battery plate, comprising the following steps: partially forming a green plate to obtain a partially formed plate; and forming the partially formed plate and a matching plate.

[0004] Furthermore, the partially formed pole plate and the matching pole plate are placed in the lead-acid battery for formation.

[0005] Furthermore, the green plate is partially formed by electrolyzing it with waste lead paste.

[0006] Furthermore, the green plate is used as the positive electrode, the waste lead paste is used as the negative electrode, and the matching plate is an unformed negative electrode plate.

[0007] Furthermore, the green plate and the waste lead paste are placed in an electrolysis device for electrolysis, and the electrolysis device is separated into a green plate placement area and a waste lead paste placement area by a proton membrane. The green plate placement area contains a conductive solution, and the waste lead paste placement area contains a dilute sulfuric acid solution.

[0008] Furthermore, the conductive solution is a neutral sulfate solution.

[0009] Furthermore, the neutral sulfate solution is a potassium sulfate solution or a sodium sulfate solution.

[0010] The present invention also protects a formation system for lead-acid battery plates, comprising a lead-acid battery to be formed and a formation device, wherein the plates in the lead-acid battery to be formed include the partially formed plates and matching plates, and the formation device is used to form the plates installed in the lead-acid battery to be formed.

[0011] Furthermore, it also includes an electrolysis device, which includes a green plate placement area and a waste lead paste placement area separated by a proton membrane, and the lead-acid battery to be formed is installed with partially formed plates obtained by electrolysis in the electrolytic cell.

[0012] Furthermore, the green plate placement area contains a conductive solution, the waste lead paste placement area contains a dilute sulfuric acid solution, the conductive solution is connected to the positive pole of an external power supply, the dilute sulfuric acid solution is connected to the negative pole of an external power supply, and the matching plate is an unformed negative plate.

[0013] The formation method and system of the present invention can ensure the performance of the green plate after the formation. (IV) Description of the drawings

[0014] Figure 1 A schematic diagram of an electrolysis device in a formation system of the present invention is shown. (V) Specific implementation methods

[0015] The present invention is further described below in conjunction with specific embodiments, but the protection scope of the present invention is not limited thereto:

[0016] The invention discloses a method for forming a lead-acid battery plate, comprising the following steps: partially forming a green plate to obtain a partially formed plate; forming the partially formed plate and a matching plate, preferably placing the partially formed plate and the matching plate into a lead-acid battery for forming. According to the design of specific positive and negative plates, if the required formation time of the positive plate in the lead-acid storage battery to be formed is longer than the required formation time of the negative plate, such as the required formation time of the positive plate is 2 times the required formation time of the negative plate, at this moment, the positive plate can be partially formed first, that is, half of the required total formation time is completed to obtain the partially formed plate, then the partially formed plate and the matching plate, i.e. the negative plate, are loaded into the lead-acid storage battery for internal formation, thereby ensuring that the positive and negative plates installed in the lead-acid storage battery can basically complete the formation at the same time, thereby avoiding the hydrogen evolution of the negative plate; similarly, if the required formation time of the negative plate in the lead-acid storage battery to be formed is longer than the required formation time of the positive plate, then the negative plate can be partially formed first, then the partially formed plate and the matching plate, i.e. the positive plate, are loaded into the lead-acid storage battery for internal formation, thereby ensuring that the positive and negative plates installed in the lead-acid storage battery can basically complete the formation at the same time, thereby avoiding the oxygen evolution of the positive plate. The degree of partial formation of the green plate can be calculated according to the requirements, so as to ensure that the partially formed plate and the matching plate can be formed at the same time when they are installed in the lead-acid battery. The matching plate is preferably an unformed plate.

[0017] The partial formation of the green plate of the present invention can be carried out by electrolysis, preferably by electrolyzing the green plate and the waste lead paste. When the positive green plate needs to be partially formed, the positive green plate is used as the positive electrode and the waste lead paste is used as the negative electrode. The positive green plate is placed in the green plate placement area of ​​the electrolysis device, and the green plate placement area contains a sodium sulfate solution; the waste lead paste is placed in the waste lead paste placement area of ​​the electrolysis device, and the waste lead paste placement area contains a dilute sulfuric acid solution. The sodium sulfate solution in the green plate placement area and the dilute sulfuric acid solution in the waste lead paste placement area are separated by a proton membrane; the positive green plate is connected to the positive electrode of an external power supply, and the waste lead paste is connected to the negative electrode of an external power supply, and power is turned on. The positive green plate completes partial formation, and the waste lead paste is desulfurized at the same time. When the negative green plate needs to be partially formed, the negative green plate is used as the negative electrode and the waste lead paste is used as the positive electrode, and the negative green plate is placed in the green plate placement area of ​​the electrolysis device, where a dilute sulfuric acid solution is contained; the waste lead paste is placed in the waste lead paste placement area of ​​the electrolysis device, where a sodium sulfate solution is contained, and the dilute sulfuric acid solution in the green plate placement area and the sodium sulfate solution in the waste lead paste placement area are separated by a proton membrane; the negative green plate is connected to the negative electrode of an external power supply, and the waste lead paste is connected to the positive electrode of an external power supply, and power is turned on, so that the negative green plate is partially formed, and the waste lead paste is desulfurized at the same time. The present invention can complete the desulfurization or partial desulfurization of waste lead paste while partially forming the green plate. On the one hand, the partially formed plate and the matching plate can be formed at the same time when they are installed in the lead-acid battery, thereby avoiding hydrogen or oxygen evolution of the plate to affect the performance of the plate. On the other hand, the electric energy wasted for hydrogen or oxygen evolution due to inconsistent formation time of the positive and negative plates of the existing lead-acid battery can be used for desulfurization of waste lead paste, without increasing the electricity cost of the enterprise.

[0018] The present invention also protects a lead-acid battery plate formation system, comprising a lead-acid battery to be formed and a formation device, wherein the plate in the lead-acid battery to be formed comprises a partially formed plate and a matching plate, and the formation device is used to form the plate installed in the lead-acid battery to be formed. The lead-acid battery plate formation system of the present invention preferably also includes an electrolysis device, wherein the electrolysis device includes a green plate placement area and a waste lead paste placement area separated by a proton membrane, and the lead-acid battery to be formed is installed with a partially formed plate obtained by electrolysis in an electrolytic cell. The green plate placement area contains a sodium sulfate solution, and the waste lead paste placement area contains a dilute sulfuric acid solution. The sodium sulfate solution is connected to the positive pole of an external power supply, and the dilute sulfuric acid solution is connected to the negative pole of an external power supply. In this case, the green plate is a positive green plate. The green plate placement area can also contain a dilute sulfuric acid solution, and the waste lead paste placement area contains a sodium sulfate solution. Similarly, the sodium sulfate solution is connected to the positive pole of an external power supply, and the dilute sulfuric acid solution is connected to the negative pole of an external power supply. In this case, the green plate is a negative green plate.

[0019] The present invention also protects an electrolysis device 100, including a green plate placement area 101 for placing green plates and a waste lead paste placement area 102 for placing waste lead paste, the green plate placement area 101 and the waste lead paste placement area 102 are separated by a proton membrane 103, the green plate placement area contains a sodium sulfate solution, the waste lead paste placement area contains a dilute sulfuric acid solution, the green plate 104 is used to connect to the positive electrode of an external power source, and the waste lead paste 105 is used to connect to the negative electrode of the power source, and the green plate is a positive green plate. Similarly, the green plate placement area can contain a dilute sulfuric acid solution, the waste lead paste placement area contains a sodium sulfate solution, the green plate is used to connect to the negative electrode of an external power source, and the waste lead paste is used to connect to the positive electrode of the power source, and the green plate is a negative green plate.

[0020] The present invention also protects a method for desulfurizing waste lead paste, comprising the following steps: placing a green plate in a green plate placement area of ​​an electrolytic device, wherein the green plate placement area contains a sodium sulfate solution; placing waste lead paste in a waste lead paste placement area of ​​the electrolytic device, wherein the waste lead paste placement area contains a dilute sulfuric acid solution, wherein the sodium sulfate solution in the green plate placement area and the dilute sulfuric acid solution in the waste lead paste placement area are separated by a proton membrane; connecting the green plate to the positive pole of an external power supply, and connecting the waste lead paste to the negative pole of the power supply, and applying power to desulfurize the waste lead paste. In the method for desulfurizing waste lead paste of the present invention, the green plate placement area may contain a dilute sulfuric acid solution, and the waste lead paste placement area may contain a sodium sulfate solution, placing the green plate in the green plate placement area of ​​the electrolytic device, placing the waste lead paste in the waste lead paste placement area of ​​the electrolytic device, connecting the green plate to the negative pole of an external power supply, and connecting the waste lead paste to the positive pole of the power supply, and applying power to desulfurize the waste lead paste.

[0021] The present invention combines the desulfurization of waste lead paste and the formation of green plates under the same power-on condition, which can save the consumption of electric energy. In addition, it can also avoid the waste of electricity when the plates installed in the lead-acid storage battery are further formed, and also ensure the final formation effect of the plates.

[0022] The sodium sulfate solution of the present invention preferably has a concentration of 0.5%-0.9%, and the dilute sulfuric acid solution preferably has a concentration of 1.2%-1.5%. The sodium sulfate solution of the present invention may also be any other conductive solution, such as hydrochloric acid, etc., preferably a neutral solution, such as a sulfate solution, such as potassium sulfate, sodium sulfate, etc., and a neutral solution can improve the efficiency of the reaction. The proton membrane of the present invention is preferably an ion membrane that can only pass protons, such as a perfluorosulfonic acid ion membrane.

[0023] Waste lead paste usually contains lead dioxide, lead sulfate, lead oxide, lead, additives and other ingredients. Positive plates usually contain 3BS, 4BS, 1BS, red lead, lead oxide, lead sulfate, lead, positive electrode additives, etc. Negative positive plates usually contain 3BS, 1BS, lead oxide, lead sulfate, lead, negative electrode additives, etc.

[0024] The above-described embodiment is only a preferred solution of the present invention and does not limit the present invention in any form. There are other variations and modifications without exceeding the technical solution described in the claims.

Claims

1. A method for forming a lead-acid battery plate, characterized in that: The method comprises the following steps: electrifying the positive electrode plate as the positive electrode to partially form the positive electrode plate; forming the partially formed electrode plate and the unformed negative electrode plate, and the partially formed electrode plate and the unformed negative electrode plate are formed at the same time.

2. A method for forming a lead-acid battery plate as claimed in claim 1, characterized in that: The partially formed polar plate and negative plate are placed in the lead-acid battery for formation.

3. A method for forming a lead-acid battery polar plate as claimed in claim 1 or 2, characterized in that: The positive electrode plate is partially formed by electrolyzing it with waste lead paste.

4. A method for forming a lead-acid battery plate as claimed in claim 3, characterized in that: The positive green plate and the waste lead paste are placed in an electrolysis device for electrolysis. The electrolysis device is separated into a green plate placement area and a waste lead paste placement area by a proton membrane. The green plate placement area contains a conductive solution, and the waste lead paste placement area contains a dilute sulfuric acid solution.

5. A method for forming a lead-acid battery plate as claimed in claim 4, characterized in that: The conductive solution is a neutral sulfate solution.

6. A method for forming a lead-acid battery plate as claimed in claim 5, characterized in that: The neutral sulfate solution is a potassium sulfate solution or a sodium sulfate solution.

7. A method for forming a lead-acid battery plate as claimed in claim 1, characterized in that: The positive electrode plate as the positive electrode is replaced by the negative electrode plate as the negative electrode, and the negative electrode plate is replaced by the positive electrode plate.

8. A lead-acid battery plate formation system, characterized in that: The invention comprises a lead-acid storage battery to be formed and a forming device, wherein the polar plate in the lead-acid storage battery to be formed comprises a polar plate as a positive electrode for partial formation and a polar plate which is not formed. of The negative electrode plate, the electrode plate which is partially formed by energizing as the positive electrode and the unformed negative electrode plate are formed at the same time, and the formation device is used to form the electrode plate installed in the lead-acid battery to be formed.

9. A lead-acid battery plate formation system as claimed in claim 8, characterized in that: It also includes an electrolysis device, which includes a positive plate placement area and a waste lead paste placement area separated by a proton membrane, and the lead-acid battery to be formed is equipped with a partially formed plate obtained by electrolysis in the electrolytic cell.

10. A lead-acid battery plate formation system as claimed in claim 9, characterized in that: The positive electrode plate placement area contains a conductive solution, the waste lead paste placement area contains a dilute sulfuric acid solution, the conductive solution is connected to the positive electrode of an external power supply, the dilute sulfuric acid solution is connected to the negative electrode of an external power supply, and the negative electrode plate is an unformed negative electrode plate.

11. A lead-acid battery plate formation system as claimed in claim 8, characterized in that: The partially formed electrode plate and the negative electrode plate as the positive electrode are replaced by the partially formed electrode plate and the positive electrode plate as the negative electrode.

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