Curing chamber and curing method for lead-acid battery paste-coated plates

Abstract

The present invention provides a curing chamber for a pasted plate of a lead-acid battery, comprising a curing chamber, wherein the four walls of the curing chamber are respectively provided with a vacuum pump interface, a hot air blower interface, an exhaust interface, an oxygen interface and a water inlet, and further comprising: an oxygen tube installed inside the curing chamber, one end of the oxygen tube being connected to the oxygen interface, a water tank being provided at the bottom of the curing chamber, and a heating tube being provided inside the water tank. The present invention also provides a curing method for a curing chamber for a pasted plate of a lead-acid battery. The curing chamber of the present invention has a vacuum pumping function, and the interior of the curing chamber is vacuumed by a vacuum pump to achieve a set negative pressure, thereby reducing the evaporation temperature of the water in the water tank, so as to achieve the generation of water vapor at the set temperature to permeate the entire interior of the curing chamber, thereby accurately controlling the temperature and humidity in the curing chamber, ensuring the consistency and uniformity of the temperature and humidity in the curing chamber, improving the performance of the plate after curing, and reducing energy consumption at the same time.

Description

Technical Field

[0001] The invention relates to the technical field of lead-acid batteries, and in particular to a curing chamber for a paste-coated polar plate of a lead-acid battery and a curing method thereof. Background Art

[0002] The curing of the paste-coated plates of lead-acid batteries is a key process in the battery manufacturing process. Its main functions are as follows: 1. Recrystallization of basic lead sulfate in the lead paste; 2. Oxidation of free lead in the lead paste; 3. Oxidative corrosion on the surface of the plates. The curing process is completed in a curing chamber, and its main feature is to control the temperature and humidity in the curing chamber to meet the preset requirements according to the requirements of the curing process stage, and provide sufficient oxygen to maintain the necessary chemical reactions.

[0003] The existing curing chamber is generally equipped with a hot air circulation system, a water mist spray humidification system and a whole machine control system. The hot air control adjusts the temperature and provides the oxygen required in the process engineering, and the water mist spray humidification system controls and adjusts the humidity. The process is mainly divided into three stages: 1. Recrystallization of basic lead sulfate; 2. Oxidation of free lead and plate interface; 3. Drying of residual moisture. Because higher humidity and a certain temperature are required in the first and second stages, the existing hot air heating and water mist spray humidification methods have the following disadvantages: the hot air discharged from the curing chamber during hot air circulation heating will inevitably bring out some heat, increasing energy consumption; the temperature will inevitably be lowered during humidification in the first and second stages, and the humidity will inevitably be lowered during heating, which cannot be taken into account and increases energy consumption; the third stage is the residual moisture drying stage, the hot air drying time is long and the energy consumption is high. In addition, the performance consistency of the plates after curing is poor: since it is difficult to ensure uniformity and consistency with hot air heating and water mist spray humidification, the actual temperature and humidity of each plate in the curing room vary greatly, so the consistency of the plates after curing is poor. This shortcoming can only be partially compensated by extending the curing time, which prolongs the curing time. Summary of the invention

[0004] The purpose of the present invention is to address the defects of the prior art and provide a curing chamber for a lead-acid battery paste-coated plate, comprising a curing chamber, wherein the four walls of the curing chamber are respectively provided with a vacuum pump interface, a hot air blower interface, an exhaust interface, an oxygen interface and a water inlet, and further comprising: an oxygen pipe installed inside the curing chamber, one end of the oxygen pipe is connected to the oxygen interface, a water tank is provided at the bottom of the curing chamber, and a heating pipe is provided inside the water tank.

[0005] Furthermore, the curing chamber is provided with plate supports on both sides thereof, and furthermore, the plate supports are provided with holes for fixing the plate.

[0006] Furthermore, a PLC control device is also provided outside the curing chamber.

[0007] Furthermore, the side wall of the curing chamber also has a drain port.

[0008] Furthermore, the side walls of the curing chamber are also provided with a temperature detection interface and a humidity detection interface.

[0009] Furthermore, a pressure detection interface is arranged on the side wall of the curing chamber.

[0010] Furthermore, a water level detection interface is arranged on the side wall of the curing chamber.

[0011] Furthermore, the oxygen tubes are arranged horizontally in a tic-tac-toe structure.

[0012] A curing method for a curing chamber of a lead-acid battery paste-coated plate comprises the following steps:

[0013] The exhaust interface is closed, and the vacuum pump evacuates the interior of the curing chamber through the vacuum pump interface to reach a preset negative pressure, and then the water in the water tank is heated to a preset temperature through the heating pipe until the curing chamber is filled with water vapor, and at the same time, oxygen is transported into the curing chamber through the oxygen interface until the recrystallization of basic lead sulfate, the oxidation of free lead and the plate interface are completed at the preset time, and the moisture in the water tank is discharged;

[0014] After the vacuum pump continues to evacuate for a period of time, the exhaust interface is opened, and hot air is sent into the curing chamber through the hot air blower interface for a period of time to discharge the water vapor through the exhaust interface. The vacuuming and hot air supply cycle is repeated until the plate is dried.

[0015] The beneficial effects of the present invention are:

[0016] 1. The curing chamber of the present invention has a vacuum pumping function. The interior of the curing chamber is evacuated by a vacuum pump to achieve a set negative pressure, thereby reducing the evaporation temperature of water in the water tank, so that water vapor is generated at the set temperature to permeate the entire interior of the curing chamber, thereby accurately controlling the temperature and humidity in the curing chamber, ensuring the consistency and uniformity of the temperature and humidity in the curing chamber, improving the performance of the plate after curing, and reducing energy consumption.

[0017] 2. The curing chamber of the present invention does not need to provide oxygen during curing by hot air, but is independently controlled, and can accurately supply oxygen according to the requirements of the process stage, so that the recrystallization of basic lead sulfate, the oxidation of free lead and the plate interface can be combined and implemented simultaneously, thereby greatly reducing the curing time and energy consumption.

[0018] 3. During the final drying of the plate, i.e. the residual moisture drying stage, a vacuum pump can be used to evacuate the curing chamber to a lower negative pressure, thereby reducing the evaporation temperature of the residual moisture in the plate, promoting the drying speed of the residual moisture in the plate, and thus reducing the drying time. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a structural schematic diagram of a curing chamber for a paste-coated lead-acid battery plate of the present invention;

[0020] Figure 2 for Figure 1 Top view of the .

[0021] Figure numerals: 1-curing chamber; 2-vacuum pump interface; 3-hot air blower interface; 4-exhaust interface; 5-oxygen interface; 6-water inlet; 7-oxygen pipe; 8-water tank; 9-heating pipe; 10-plate bracket; 11-drain outlet; 12-temperature detection interface; 13-humidity detection interface; 14-pressure detection interface; 15-water level detection interface. DETAILED DESCRIPTION

[0022] In order to make the technical problems, technical solutions and beneficial effects to be solved by the present application more clearly understood, the present application is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present application and are not used to limit the present application.

[0023] Example 1

[0024] A curing chamber for a lead-acid battery paste-coated plate comprises a curing chamber 1, wherein the four walls of the curing chamber 1 are respectively provided with a vacuum pump interface 2, a hot air blower interface 3, an exhaust interface 4, an oxygen interface 5 and a water inlet 6, an oxygen pipe 7 installed inside the curing chamber 1, one end of the oxygen pipe 7 is connected to the oxygen interface 5, and the bottom of the curing chamber 1 is provided with a water tank 8, and the water tank 8 is provided with a heating pipe 9. The vacuum pump interface 2 is used for connecting an external vacuum pump, and the hot air blower interface 3 is used for connecting an external hot air blower.

[0025] The curing chamber 1 also has plate supports 10 on both sides. The plate supports 10 have holes for fixing the plates. The plates are placed horizontally, and multiple plates can be placed layer by layer on the plate supports 10 to improve efficiency.

[0026] The curing chamber 1 is also provided with a PLC control device outside thereof, which is used to control the pressure, oxygen, temperature and process program of the curing chamber.

[0027] The side wall of the curing chamber 1 also has a drain port 11. When the curing of the plate enters the final drying process, the water in the water tank 8 needs to be drained, and the drain port 11 is used to facilitate the drainage of the accumulated water.

[0028] The side wall of the curing chamber 1 is also provided with a temperature detection interface 12 and a humidity detection interface 13. The temperature detection interface 12 and the humidity detection interface 13 are externally connected with a temperature detection device and a humidity detection device, and the temperature and humidity detection device and the humidity detection device are connected with a PLC control device to facilitate the control of the process.

[0029] The side wall of the curing chamber 1 is also provided with a pressure detection interface 14. An external pressure detection device is connected to the pressure detection interface 14, and the pressure detection device is connected to a PLC control device to facilitate the control of the process.

[0030] The side wall of the curing chamber 1 is also provided with a water level detection interface 15. An external water level detection device is connected to the water level detection interface 15, and the water level detection device is connected to a PLC control device to facilitate the control of the process.

[0031] The oxygen pipes 7 are arranged horizontally in a tic-tac-toe configuration. Such an arrangement is conducive to uniformly transporting oxygen to various parts of the plate, ensuring the consistency of curing at various parts of the plate, thereby shortening the curing time.

[0032] Example 2

[0033] A curing method for a curing chamber of a lead-acid battery paste-coated plate comprises the following steps:

[0034] The exhaust port 4 is closed, and the vacuum pump evacuates the interior of the curing chamber 1 through the vacuum pump port 2 to reach a preset negative pressure, and then the water in the water tank 8 is heated to a preset temperature through the heating pipe 9 until the curing chamber 1 is filled with water vapor, and at the same time, oxygen is transported into the curing chamber 1 through the oxygen port 5 until the recrystallization of basic lead sulfate, the oxidation of free lead and the plate interface are completed at the preset time, and the moisture in the water tank 8 is discharged;

[0035] After the vacuum pump continues to evacuate for a period of time, the exhaust port 4 is opened, and hot air is sent into the curing chamber 1 through the hot air blower port 3 for a period of time, and the water vapor is discharged through the exhaust port 4. The vacuuming and hot air supplying cycle is repeated until the plate is dried.

[0036] If steam is used for recrystallization of basic lead sulfate, oxidation of free lead and plate interface, the temperature is generally greater than or equal to 100 degrees Celsius, which is much higher than the temperature required for the curing process. Therefore, the existing curing chambers do not use this method. However, this curing chamber has a vacuum pumping function. The vacuum pump is used to evacuate the interior of the curing chamber to reach a set negative pressure, thereby reducing the evaporation temperature of the water in the water tank, so that water vapor is generated at the set temperature to diffuse the entire curing chamber, thereby accurately controlling the temperature and humidity in the curing chamber, ensuring the consistency and uniformity of the temperature and humidity in the curing chamber, improving the performance of the plate after curing, and reducing energy consumption. This curing chamber has a vacuum pumping function. During the curing in the chamber, oxygen supply does not need to be provided by hot air, but is controlled separately. It can accurately supply oxygen according to the requirements of the process stage, so that the recrystallization of basic lead sulfate, the oxidation of free lead and the interface of the plate can be combined and implemented simultaneously, thereby greatly reducing the curing time and energy consumption; in addition, during the final drying of the plate, that is, the residual moisture drying stage, a vacuum pump can be used to evacuate the curing chamber to achieve a lower negative pressure, reduce the evaporation temperature of the residual moisture in the plate, and promote the drying speed of the residual moisture in the plate, thereby reducing the drying time; therefore, this curing chamber can greatly reduce the curing time, greatly reduce energy consumption, and improve the performance of the plate after curing.

[0037] The embodiments described above are only used to illustrate the technical solutions of the present application, rather than to limit them. Although the present application has been described in detail with reference to the aforementioned embodiments, a person skilled in the art should understand that the technical solutions described in the aforementioned embodiments may still be modified, or some of the technical features may be replaced by equivalents. Such modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present application, and should all be included in the protection scope of the present application.

Claims

1. A curing chamber for a lead-acid battery paste-coated plate, comprising a curing chamber (1), wherein four walls of the curing chamber (1) are respectively provided with a vacuum pump interface (2), a hot air blower interface (3), an exhaust interface (4), an oxygen interface (5) and a water inlet (6), wherein: Also includes: An oxygen tube (7) is installed inside the curing chamber (1), one end of the oxygen tube (7) is connected to the oxygen interface (5), and a water tank (8) is provided at the bottom of the curing chamber (1), and a heating tube (9) is provided inside the water tank (8).

2. The curing chamber for the pasted lead-acid battery plate according to claim 1, characterized in that: The curing chamber (1) also has polar plate supports (10) on both sides.

3. The curing chamber for the paste-coated lead-acid battery plate according to claim 2, characterized in that: The pole plate support (10) has holes for fixing the pole plate.

4. The curing chamber for the pasted lead-acid battery plate according to claim 1, characterized in that: The outside of the curing chamber (1) is also provided with a PLC control device.

5. The curing chamber for the pasted lead-acid battery plate according to claim 1, characterized in that: The side wall of the curing chamber (1) also has a drainage port (11).

6. The curing chamber for the pasted lead-acid battery plate according to claim 1, characterized in that: The side wall of the curing chamber (1) is also provided with a temperature detection interface (12) and a humidity detection interface (13).

7. The curing chamber for the paste-coated lead-acid battery plate according to claim 1, characterized in that: The side wall of the curing chamber (1) is also provided with a pressure detection interface (14).

8. The curing chamber for the paste-coated lead-acid battery plate according to claim 1, characterized in that: The side wall of the curing chamber (1) is also provided with a water level detection interface (15).

9. The curing chamber for the pasted lead-acid battery plate according to claim 1, characterized in that: The oxygen pipes (7) are arranged horizontally in a tic-tac-toe structure.

10. The curing method of the curing chamber of the lead-acid battery paste plate according to claim 1, characterized in that: The following steps are involved: The exhaust port (4) is closed, and the vacuum pump is used to evacuate the interior of the curing chamber (1) through the vacuum pump port (2) to reach a preset negative pressure, and then the water in the water tank (8) is heated to a preset temperature through the heating pipe (9) until the curing chamber (1) is filled with water vapor, and at the same time, oxygen is transported into the curing chamber (1) through the oxygen port (5) until the recrystallization of basic lead sulfate, the oxidation of free lead and the electrode plate interface are completed within a preset time, and the water in the water tank (8) is discharged; After the vacuum pump continues to evacuate for a period of time, the exhaust port (4) is opened, and hot air is simultaneously sent into the curing chamber (1) through the hot air blower port (3) for a period of time, and the water vapor is discharged through the exhaust port (4). The evacuation and hot air supply cycle is repeated until the plate is dried.

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