Lead-acid storage battery green plate curing method

Abstract

The invention discloses a lead-acid storage battery unformed plate curing method. The method comprises the following control methods that circulating air supply in a curing room is achieved through cooperation of a circulating fan and a control valve; parameters in the curing room are detected through the sensor system and are transmitted to the automatic control unit in real time; the control valve, the air inlet / outlet door and the heating / humidifying system are controlled to be opened and closed according to an abnormal parameter signal received by the automatic control unit and a feedback control signal; the sensor system comprises an oxygen sensor, a temperature sensor and a humidity sensor. Compared with the prior art, the lead-acid storage battery green plate curing method has the advantages that an oxygen sensor is additionally arranged to ensure that sufficient oxygen can be timely supplemented in a curing room in the polar plate curing process to ensure that free lead in a polar plate is oxidized; and meanwhile, the temperature and humidity of the curing room can be adjusted through the additionally arranged temperature sensor and humidity sensor.

Description

Technical Field

[0001] The invention relates to the technical field of storage batteries, and more particularly to a method for curing green plates of lead-acid storage batteries. Background Art

[0002] After the lead-acid battery plates are coated by the coating machine, they need to be cured and dried in the curing and drying room. The curing has three main functions: the first is to form the basic skeleton of the cured lead paste; the second is to increase the mechanical strength of the connection between the active material and the grid; the third is to oxidize the free lead in the lead paste and increase the bonding force between the lead paste itself.

[0003] The existing curing method ensures the operation of the process by controlling the temperature and humidity of the curing room and the curing time, thereby ensuring the curing effect of the plate. However, in order to ensure production efficiency, more and more plates are placed in the curing room, and the insulation and sealing effects of the curing room are getting better and better. During the curing process, it is difficult for external air to enter the curing room. However, the plate curing process requires sufficient oxygen to ensure the oxidation of free lead in the plate. As a result, the plate curing effect cannot be achieved due to lack of oxygen during the curing process. Free lead can only be converted into active substances after being oxidized into lead oxide. Excessive free lead content will cause the generation and expansion of stress in the plate formation, resulting in bending of the plate and the fall off of active substances.

[0004] Therefore, how to design a new lead-acid battery plate curing method to ensure sufficient oxygen content during the curing process, thereby improving the plate curing effect, is a problem that technical personnel in this field urgently need to solve. Summary of the invention

[0005] In view of this, the present invention provides a lead-acid battery green plate curing method, aiming to solve the above technical problems.

[0006] In order to achieve the above object, the present invention adopts the following technical solution:

[0007] A lead-acid battery green plate curing method, comprising the following control method:

[0008] The circulating air supply inside the curing room is realized through the cooperation of the circulating fan and the control valve;

[0009] The parameters inside the curing room are detected by the sensor system and transmitted to the automatic control unit in real time;

[0010] The abnormal parameter signal received by the automatic control unit is used to feed back the control signal to control the opening and closing of the control valve, the inlet / outlet damper and the heating / humidification system.

[0011] Preferably, in the above-mentioned lead-acid battery green plate curing method, when the curing room works normally, the circulating fan works, the control valve is opened, the first automatic air outlet door, the automatic air inlet door and the second automatic air outlet door are closed, and air is circulated inside the curing room.

[0012] Preferably, in the above-mentioned lead-acid battery green plate curing method, the sensor system includes an oxygen sensor. When the oxygen sensor in the curing room senses that the oxygen concentration is lower than the minimum required concentration, the automatic control unit controls the automatic air inlet door to open, controls the valve to close, and opens the first automatic air outlet door, so that the outside air replenishes oxygen into the curing room.

[0013] Preferably, in the above-mentioned lead-acid battery green plate curing method, when the oxygen concentration measured by the oxygen sensor reaches the required concentration, the automatic control unit controls the first automatic air inlet door to close, controls the valve to open, and the curing room performs internal circulation air supply work normally.

[0014] Preferably, in the above-mentioned lead-acid battery green plate curing method, the minimum required concentration of oxygen is 18%, and the satisfactory concentration of oxygen is 21%.

[0015] Preferably, in the above-mentioned lead-acid battery green plate curing method, the sensor system includes a temperature sensor. When the temperature sensor senses that the internal temperature of the curing room exceeds the set temperature, the automatic control unit controls the automatic air inlet door to open, and allows natural air from the outside to enter through the circulating fan to lower the temperature of the curing room.

[0016] Preferably, in the above-mentioned lead-acid battery green plate curing method, when the temperature sensor senses that the internal temperature of the curing room is lower than the set temperature, the automatic control unit controls the heater in the heating / humidification system to start working, and the circulating fan blows through the heater to increase the temperature.

[0017] Preferably, in the above-mentioned lead-acid battery green plate curing method, the sensor system includes a humidity sensor. When the humidity sensor senses that the humidity is higher than the set humidity, the automatic control unit controls the automatic air inlet door and the second automatic air outlet door to open, and allows natural air from the outside to enter through the circulating fan to reduce the humidity in the curing room.

[0018] Preferably, in the above-mentioned lead-acid battery green plate curing method, when the humidity sensor senses that the humidity is lower than the set humidity, the automatic control unit controls the steam humidifier in the heating / humidifying system to start working to increase the humidity.

[0019] Preferably, in the above-mentioned lead-acid battery green plate curing method, a three-dimensional air distribution system for circulating air is provided in the curing room.

[0020] It can be seen from the above technical solutions that, compared with the prior art, the present invention discloses a method for curing green plates of lead-acid batteries. Compared with the prior art, an oxygen sensor is added to ensure that sufficient oxygen can be added to the curing room in time during the curing process of the plates to ensure the oxidation of free lead in the plates; at the same time, the temperature and humidity of the curing room can be adjusted by adding temperature sensors and humidity sensors. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on the provided drawings without paying creative work.

[0022] Figure 1 The accompanying drawing is a schematic diagram of the lead-acid battery plate curing method provided by the present invention.

[0023] in:

[0024] 1- first automatic air outlet door; 2- control valve; 3- temperature sensor; 4- humidity sensor; 5- oxygen sensor; 6- automatic air inlet door; 7- heater; 8- steam humidifier; 9- circulating fan; 10- second automatic air outlet door; 11- three-dimensional air distribution; 12- automatic control unit. DETAILED DESCRIPTION

[0025] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0026] See attached Figure 1 The embodiment of the present invention discloses a method for curing a lead-acid battery green plate, including the following control method:

[0027] The circulating air supply inside the curing room is realized by the cooperation of the circulating fan 9 and the control valve 2;

[0028] The parameters inside the curing room are detected by the sensor system and transmitted to the automatic control unit 12 in real time;

[0029] The abnormal parameter signal received by the automatic control unit 12 is used to feed back the control signal, and the control valve 2, the inlet / outlet damper and the heating / humidification system are controlled to be opened and closed.

[0030] Preferably, in the above-mentioned lead-acid battery green plate curing method, when the curing room works normally, the circulating fan 9 works, the control valve 2 is opened, the first automatic air outlet door 1, the automatic air inlet door 6 and the second automatic air outlet door 10 are closed, and air is circulated inside the curing room.

[0031] Preferably, in the above-mentioned lead-acid battery green plate curing method, the sensor system includes an oxygen sensor 5. When the oxygen sensor 5 in the curing room senses that the oxygen concentration is lower than the minimum required concentration, the automatic control unit 12 controls the automatic air inlet door 6 to open, controls the valve 2 to close, and opens the first automatic air outlet door 1, so that the outside air replenishes oxygen inside the curing room.

[0032] Preferably, in the above-mentioned lead-acid battery green plate curing method, when the oxygen concentration measured by the oxygen sensor 5 reaches the required concentration, the automatic control unit 12 controls the first automatic air inlet door 1 to close, controls the valve 2 to open, and the internal circulation air supply in the curing room operates normally.

[0033] Preferably, in the above-mentioned lead-acid battery green plate curing method, the minimum required concentration of oxygen is 18%, and the satisfactory concentration of oxygen is 21%.

[0034] Preferably, in the above-mentioned lead-acid battery green plate curing method, the sensor system includes a temperature sensor 3. When the temperature sensor 3 senses that the internal temperature of the curing room exceeds the set temperature, the automatic control unit 12 controls the automatic air inlet door 6 to open, and allows the natural wind from the outside to enter through the circulating fan 9 to lower the temperature of the curing room.

[0035] Preferably, in the above-mentioned lead-acid battery green plate curing method, when the temperature sensor 3 senses that the internal temperature of the curing room is lower than the set temperature, the automatic control unit 12 controls the heater 7 in the heating / humidification system to start working, and the circulating fan 9 blows through the heater 7 to increase the temperature.

[0036] Preferably, in the above-mentioned lead-acid battery green plate curing method, the sensor system includes a humidity sensor 4. When the humidity sensor 4 senses that the humidity is higher than the set humidity, the automatic control unit 12 controls the automatic air inlet door 6 and the second automatic air outlet door 10 to open, and allows natural wind from the outside to enter through the circulating fan 9 to reduce the humidity in the curing room.

[0037] Preferably, in the above-mentioned lead-acid battery green plate curing method, when the humidity sensor 4 senses that the humidity is lower than the set humidity, the automatic control unit 12 controls the steam humidifier 8 in the heating / humidifying system to start working to increase the humidity.

[0038] Preferably, in the above-mentioned lead-acid battery green plate curing method, a three-dimensional air distribution 11 for circulating air is provided in the curing room.

[0039] Comparative Example 1:

[0040] The curing method is a conventional curing method, and the curing process control parameters are:

[0041] First, the curing stage, the temperature is 40-60℃, the humidity is 80-95%, and the curing time is 4-10h;

[0042] Second, the curing stage, the temperature is 60-80°C, the humidity is 60-80%, and the curing time is 10-20 hours;

[0043] Third, the drying stage, the temperature is 60-80℃, the humidity is 10-20%, and the drying time is 15-25h;

[0044] Fourth, the drying stage, the temperature is 60-80°C, the humidity is 10-20%, and the drying time is 5-10 hours.

[0045] After curing, the green plate is subjected to XRD testing to analyze the component content of the green plate.

[0046] Embodiment 1:

[0047] The curing method is the curing method of the present invention, the working principle is as described above, and the curing process control parameters are:

[0048] First, in the curing stage, the temperature is 40-60°C, the humidity is 80-95%, and the curing time is 4-10 hours. Different from Comparative Example 1, during the curing period, the oxygen sensor 5 and the automatic control unit 12 are jointly controlled to ensure that the oxygen concentration in the curing room is 18-21%;

[0049] Second, in the curing stage, the temperature is 60-80°C, the humidity is 60-80%, and the curing time is 10-20 hours. Different from Comparative Example 1, during the curing period, the oxygen sensor 5 and the automatic control unit 12 are jointly controlled to ensure that the oxygen concentration in the curing room is 18-21%;

[0050] Third, the drying stage, the temperature is 60-80℃, the humidity is 10-20%, and the drying time is 15-25h;

[0051] Fourth, the drying stage, the temperature is 60-80°C, the humidity is 10-20%, and the drying time is 5-10 hours.

[0052] After the curing is completed, the green plate is subjected to XRD test to analyze the free lead content of the green plate. It can be seen that after adopting the curing method of the present invention, the free lead content of the green plate is significantly reduced.

[0053] As shown in the following table:

[0054]

[0055]

[0056] In this specification, each embodiment is described in a progressive manner, and each embodiment focuses on the differences from other embodiments. The same or similar parts between the embodiments can be referred to each other. For the device disclosed in the embodiment, since it corresponds to the method disclosed in the embodiment, the description is relatively simple, and the relevant parts can be referred to the method part.

[0057] The above description of the disclosed embodiments enables one skilled in the art to implement or use the present invention. Various modifications to these embodiments will be apparent to one skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention will not be limited to the embodiments shown herein, but rather to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A method for curing green plates of lead-acid batteries, characterized in that: The following control methods are included: The circulating air supply inside the curing room is realized by the cooperation of the circulating fan (9) and the control valve (2); The parameters inside the curing room are detected by a sensor system and transmitted to an automatic control unit (12) in real time; The abnormal parameter signal received by the automatic control unit (12) is used to feed back the control signal, thereby performing opening and closing control on the control valve (2), the inlet / outlet damper and the heating / humidification system.

2. A lead-acid battery green plate curing method according to claim 1, characterized in that: When the curing room operates normally, the circulating fan (9) operates, the control valve (2) is opened, the first automatic air outlet door (1), the automatic air inlet door (6) and the second automatic air outlet door (10) are closed, and air is circulated inside the curing room.

3. A lead-acid battery green plate curing method according to claim 1, characterized in that: The sensor system comprises an oxygen sensor (5). When the oxygen sensor (5) in the curing room senses that the oxygen concentration is lower than the minimum required concentration, the automatic control unit (12) controls the automatic air inlet door (6) to open, controls the valve (2) to close, and opens the first automatic air outlet door (1), so that the external air supplements oxygen inside the curing room.

4. A lead-acid battery green plate curing method according to claim 3, characterized in that: When the oxygen concentration measured by the oxygen sensor (5) reaches the required concentration, the automatic control unit (12) controls the first automatic air inlet door (1) to close and controls the valve (2) to open, so that the internal circulation air supply in the curing room can proceed normally.

5. A lead-acid battery green plate curing method according to claim 4, characterized in that: The minimum required concentration of oxygen is 18%, and the satisfactory concentration of oxygen is 21%.

6. A lead-acid battery green plate curing method according to claim 1, characterized in that: The sensor system comprises a temperature sensor (3). When the temperature sensor (3) senses that the temperature inside the curing room exceeds a set temperature, the automatic control unit (12) controls the automatic air inlet door (6) to open, and allows natural air from the outside to enter through the circulating fan (9) to lower the temperature of the curing room.

7. A lead-acid battery green plate curing method according to claim 6, characterized in that: When the temperature sensor (3) senses that the temperature inside the curing room is lower than the set temperature, the automatic control unit (12) controls the heater (7) in the heating / humidification system to start working, and the circulating fan (9) blows through the heater (7) to increase the temperature.

8. A lead-acid battery green plate curing method according to claim 1, characterized in that: The sensor system comprises a humidity sensor (4). When the humidity sensor (4) senses that the humidity is higher than a set humidity, an automatic control unit (12) controls an automatic air inlet door (6) and a second automatic air outlet door (10) to open, and a circulating fan (9) allows natural wind from the outside to enter, thereby reducing the humidity in the curing room.

9. A lead-acid battery green plate curing method according to claim 8, characterized in that: When the humidity sensor (4) senses that the humidity is lower than the set humidity, the automatic control unit (12) controls the steam humidifier (8) in the heating / humidifying system to start working, thereby increasing the humidity.

10. A lead-acid battery green plate curing method according to claim 1, characterized in that: A three-dimensional air distribution device (11) for circulating air is arranged in the curing room.

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