Temperature and humidity adjusting and testing device for battery plate curing chamber

Abstract

The utility model relates to a temperature and humidity adjusting and testing device of a battery plate curing chamber, which comprises an indoor water tank positioned inside the curing chamber and an outdoor water tank positioned outside the curing chamber, the outdoor water tank is communicated with the indoor water tank, a water inlet pipe is mounted on the outdoor water tank, and a floater ball valve is mounted on the water inlet pipe. Overflow holes are formed in the tank wall of the outdoor water tank; a dry-bulb temperature probe and a wet-bulb temperature probe are arranged in the curing chamber, the dry-bulb temperature probe and the wet-bulb temperature probe are arranged in parallel up and down, the dry-bulb temperature probe is located at the upper part of the wet-bulb temperature probe, the wet-bulb temperature probe is wrapped by water-absorbing gauze, and the water-absorbing gauze is partially immersed in the liquid level of the indoor water tank. Compared with the prior art, the temperature and the humidity in the curing chamber can be monitored more accurately and timely, the liquid level height of the water tank in the curing chamber can be better controlled, and the problem that the humidity in the curing chamber is reduced slowly in the polar plate drying stage due to overflow is solved.

Description

Technical Field

[0001] The utility model relates to battery production equipment, in particular to a temperature and humidity regulating and testing device for a battery plate curing chamber. Background Art

[0002] Plate curing is a critical step in battery manufacturing. During curing, the plates are placed in the curing equipment's curing chamber, where temperature and humidity must be controlled. Existing curing equipment typically includes a spray device to regulate humidity within the chamber. Temperature and humidity sensors are also installed within the chamber to monitor and adjust the temperature and humidity based on collected data.

[0003] Utility model patent publication number CN204179144U discloses a "valve-regulated sealed lead-acid battery plate curing temperature and humidity control device." This patent incorporates a water tank within the curing chamber, which is filled with water through an inlet pipe. A float valve is installed on the inlet pipe to control the water level. A steam pipe runs through the tank, heating the water in the tank and promoting evaporation of the water vapor, thereby regulating the humidity within the curing chamber. First, the patent does not address testing of the temperature and humidity within the curing chamber. Second, the water tank within the curing chamber relies solely on a float valve to control the water level. Prolonged operation of the float valve within the curing chamber in high temperature and humidity will shorten its service life. If the float valve malfunctions, the water level in the water tank is at risk of overflowing. If the battery plates are drying, the overflowing water from the water tank will cause the floor inside the curing chamber to remain damp, increasing the humidity within the chamber and seriously affecting the curing quality of the plates.

[0004] Utility model patent publication number CN204286488U discloses a "Battery Plate Curing Room and Humidity Testing Device." This patent primarily focuses on measuring the temperature and humidity within the curing chamber. It employs a water trough mounted on the inner wall of the curing chamber, with two temperature probes mounted in an up-and-down arrangement at one end of the trough and two humidity probes mounted in an up-and-down arrangement at the other end. The goal is to improve the accuracy of temperature and humidity testing within the curing chamber. This patent directly uses humidity probes to monitor the humidity within the curing chamber. However, since the humidity probes are fixed and typically located in a corner of the curing chamber, circulating air is typically used to promote uniform distribution of the spray system within the chamber. If the circulating air does not reach the humidity probes, the humidity within the curing chamber cannot be accurately and timely monitored. Actual testing also revealed that directly using humidity sensors to monitor the humidity within the curing chamber is not very sensitive, resulting in inconspicuous fluctuations in the humidity curve throughout the plate curing process, further confirming that this approach does not achieve the desired effect. Utility Model Content

[0005] The purpose of the utility model is to better adjust and test the temperature and humidity in the curing chamber and make up for the deficiencies in the above-mentioned prior art. Therefore, a temperature and humidity adjustment and testing device for a battery plate curing chamber is disclosed.

[0006] In order to achieve the above-mentioned purpose, the technical solution adopted by the present utility model is:

[0007] A temperature and humidity adjustment test device for a battery plate curing chamber comprises an indoor water tank located inside the curing chamber and an outdoor water tank located outside the curing chamber, the outdoor water tank and the indoor water tank being connected to each other, a water inlet pipe being installed on the outdoor water tank, a float ball valve being installed on the water inlet pipe, and an overflow hole being provided on the wall of the outdoor water tank; a dry-bulb temperature probe and a wet-bulb temperature probe are provided inside the curing chamber, the wet-bulb temperature probe being wrapped with absorbent gauze, and the absorbent gauze being partially immersed in the liquid surface of the indoor water tank.

[0008] Furthermore, the dry-bulb temperature probe and the wet-bulb temperature probe are arranged vertically and in parallel.

[0009] Furthermore, the dry-bulb temperature probe is located above the wet-bulb temperature probe.

[0010] Furthermore, the temperature and humidity adjustment test device also includes a control system and a transmitter. The dry-bulb temperature probe and the wet-bulb temperature probe are respectively connected to the transmitter. The transmitter feeds back the temperature data collected by the dry-bulb temperature probe and the wet-bulb temperature probe to the control system.

[0011] Furthermore, the height of the indoor water tank is lower than that of the outdoor water tank.

[0012] Furthermore, the volume of the outdoor water tank is larger than that of the indoor water tank.

[0013] The utility model is provided with a water tank inside and outside the curing chamber respectively. The indoor water tank is used to adjust the humidity in the curing chamber and cooperate with the collection of humidity data. The outdoor water tank is used to replenish water to the indoor water tank and control the liquid level height of the indoor water tank. After such design, the liquid level height of the indoor water tank can be known by observing the liquid level height of the outdoor water tank by utilizing the communicating vessel principle, so as to ensure that the water level in the indoor water tank is always within the preset range, and the size of the indoor water tank can be reduced without occupying too much area inside the curing chamber; in addition, the utility model also provides two liquid level control mechanisms in the outdoor water tank, the first one is controlled by a float ball valve, and the second one is controlled by an overflow hole to control the maximum water level. Even if the float ball valve fails, it can ensure that the water in the indoor water tank will not overflow, which is more reliable than the solution in the prior art.

[0014] In terms of temperature and humidity testing in the curing chamber, the utility model uses two temperature probes arranged in parallel above and below to sample the temperature data inside the curing chamber. The lower temperature probe is wrapped with absorbent gauze and immersed in the liquid surface of the indoor water tank. The data difference obtained by sampling the two temperature probes can be used to accurately obtain the humidity data inside the curing chamber. Compared with directly using a humidity sensor to sample the humidity in the curing chamber, the humidity conditions inside the curing chamber can be reflected more accurately and timely, which has a good guarantee effect on better control of the temperature and humidity in the curing chamber. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 Schematic diagram of the curing room temperature and humidity adjustment test device in the embodiment.

[0016] Reference numerals:

[0017] 1. Water inlet pipe; 2. Overflow hole; 3. Tap water; 4. Outdoor sink; 5. Float; 6. Dry-bulb temperature probe; 7. Wet-bulb temperature probe; 8. Absorbent gauze; 9. Indoor sink; 10. Ball valve. DETAILED DESCRIPTION

[0018] The technical solutions in the embodiments of the present invention will be described clearly and completely below with reference to the accompanying drawings in the embodiments of the present invention.

[0019] This embodiment discloses a temperature and humidity adjustment test device for a battery plate curing chamber. Figure 1 As shown, an indoor water tank 9 is provided inside the curing chamber, and an outdoor water tank 4 is provided outside the curing chamber. The outdoor water tank 4 and the indoor water tank 9 are interconnected by a pipe, and the outdoor water tank 4 replenishes the indoor water tank 9 with water. The water levels in the two water tanks remain consistent. To reduce the space occupied within the curing chamber, the indoor water tank 9 in this embodiment is designed to be smaller than the outdoor water tank 4, and the height of the indoor water tank 9 is lower than that of the outdoor water tank 4. An inlet pipe 1 is installed on the outdoor water tank 4, and a float ball valve is installed on the inlet pipe 1. The float ball valve includes a ball valve 10 mounted on the inlet pipe 1 and a float ball 5 placed on the water surface. When the liquid level in the outdoor water tank 4 falls below a set minimum level, the ball valve 10 opens, allowing tap water 3 to be injected into the outdoor water tank 4 through the inlet pipe 1. When the liquid level in the outdoor water tank 4 reaches a set maximum level, the ball valve 10 closes, stopping the injection of water into the outdoor water tank 4. Considering that the indoor water tank 9 is lower than the outdoor water tank 4, in order to avoid the water in the indoor water tank 9 from overflowing due to failure of the float ball valve, an overflow hole 2 is further opened on the tank wall of the outdoor water tank 4 in this embodiment.

[0020] The curing chamber is typically equipped with a humidifying spray device, which utilizes circulating air to accelerate air flow within the chamber and reduce temperature and humidity variations within the chamber. Existing equipment primarily relies on temperature and humidity sensors installed within the curing chamber to sample temperature and humidity, respectively. However, actual monitoring revealed that the collected humidity data did not fluctuate significantly over time throughout the curing process of the battery plates. This indicates that the humidity sensor's sensitivity is low, its installation location does not accurately reflect the humidity conditions within the curing chamber, and its service life is short. In light of this, the inventors optimized the temperature and humidity sampling method used in existing equipment. In addition to the aforementioned use of two indoor and outdoor water tanks, two temperature probes are installed in parallel, one above and one below, within the curing chamber to sample temperature, ensuring that the data sampled by both temperature probes is as accurate as possible. The upper temperature probe serves as a dry-bulb temperature probe 6, while the lower temperature probe serves as a wet-bulb temperature probe 7. Wet-bulb temperature probe 7 is wrapped with absorbent gauze 8, with the lower portion of the absorbent gauze 8 always submerged below the liquid level in the indoor water tank 9.

[0021] Continuing with the above, the curing equipment is equipped with a control system and a transmitter. The core controller of the control system can be a programmable control chip such as a single-chip microcomputer or MCU. The dry-bulb temperature probe 6 and the wet-bulb temperature probe 7 are connected to the transmitter respectively. The transmitter feeds back the temperature data collected by the dry-bulb temperature probe 6 and the wet-bulb temperature probe 7 to the control system. Taking the single-chip microcomputer as an example, the dry-bulb and wet-bulb temperature and humidity relationship conversion table shown in Table 1 is input into the single-chip microcomputer's program settings (this conversion table is currently known). The real-time temperature value within the curing chamber can be obtained through the data fed back by the dry-bulb temperature probe 6. The real-time relative humidity value within the curing chamber can be obtained by comparing the temperature difference measured by the dry-bulb temperature probe 6 and the temperature measured by the wet-bulb temperature probe 7 with the data in the dry-bulb and wet-bulb temperature and humidity relationship conversion table. In this embodiment, the dry-bulb temperature probe 6 is used to measure the air temperature within the curing chamber. This sampled value can truly reflect the real-time temperature conditions within the curing chamber. When the temperature inside the curing chamber rises, the water in the indoor water tank 9 evaporates into water vapor, which helps regulate the humidity inside the curing chamber. Because the wet-bulb temperature probe 7 is wrapped with the absorbent gauze 8, the water on the absorbent gauze 8 also evaporates, carrying away heat. Therefore, the temperature value measured by the wet-bulb temperature probe 7 is lower than the temperature value measured by the dry-bulb temperature probe 6. The temperature difference between the two is related to the relative humidity of the air inside the curing chamber. When the ambient humidity in the curing chamber is low, indicating that the temperature is high, the water on the absorbent gauze 8 evaporates quickly, absorbing the heat from the wet-bulb temperature probe 7, causing the temperature difference between the wet-bulb temperature probe 7 and the dry-bulb temperature probe 6 to increase. Conversely, when the ambient humidity in the curing chamber is high, the water on the absorbent gauze 8 evaporates slowly, absorbing less heat from the wet-bulb temperature probe 7, causing the temperature difference between the wet-bulb temperature probe 7 and the dry-bulb temperature probe 6 to decrease. This embodiment indirectly obtains humidity data in the curing chamber based on this principle.

[0022] Table 1: Conversion table of dry-bulb and wet-bulb temperature and humidity relationship in existing technology

[0023]

[0024] In order to verify the effectiveness of the temperature and humidity monitoring method adopted by the present invention, the inventors compared the humidity curve obtained by directly sampling with the humidity sensor and the humidity curve obtained by sampling in this embodiment. It was found that the humidity curve of the former had very small fluctuations and was almost always a straight line, but the latter fluctuated very obviously throughout the entire stage of plate curing, indicating that the accuracy, sensitivity and reliability of the solution of the present invention are higher than the above-mentioned existing technologies.

[0025] Although the embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations may be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A temperature and humidity adjustment test device for a battery plate curing chamber, characterized in that: The utility model comprises an indoor water tank located inside the curing room and an outdoor water tank located outside the curing room. The outdoor water tank and the indoor water tank are connected to each other. A water inlet pipe is installed on the outdoor water tank. A float ball valve is installed on the water inlet pipe. An overflow hole is provided on the wall of the outdoor water tank. A dry-bulb temperature probe and a wet-bulb temperature probe are provided inside the curing room. The wet-bulb temperature probe is wrapped with absorbent gauze. The absorbent gauze is partially immersed in the liquid surface of the indoor water tank.

2. The temperature and humidity adjustment test device for a battery plate curing chamber according to claim 1, characterized in that: The dry-bulb temperature probe and the wet-bulb temperature probe are arranged in parallel up and down.

3. The temperature and humidity adjustment test device for a battery plate curing chamber according to claim 2, characterized in that: The dry-bulb temperature probe is located above the wet-bulb temperature probe.

4. The temperature and humidity adjustment test device for a battery plate curing chamber according to claim 1, characterized in that: The temperature and humidity adjustment test device also includes a control system and a transmitter. The dry-bulb temperature probe and the wet-bulb temperature probe are respectively connected to the transmitter. The transmitter feeds back the temperature data collected by the dry-bulb temperature probe and the wet-bulb temperature probe to the control system.

5. The temperature and humidity adjustment test device for a battery plate curing chamber according to claim 1, characterized in that: The height of the indoor water tank is lower than that of the outdoor water tank.

6. The temperature and humidity adjustment test device for a battery plate curing chamber according to claim 1, characterized in that: The volume of the outdoor water tank is greater than that of the indoor water tank.

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