Full-automatic liquid supplementing system and water supplementing method for special type lead-acid storage battery of coal mine

Abstract

The invention relates to the technical field of coal mine underground auxiliary transportation equipment, in particular to a full-automatic liquid supplementing system and a water supplementing method for a special type lead-acid storage battery of a coal mine. Comprising a water supplementing platform which is internally provided with a fluid distribution channel and is used for distributing water supplementing fluid; the water inlet is formed in one end of the water supplementing platform and used for being connected with an external water source; the plurality of connecting ports are formed in the lower part of the water supplementing platform and are used for being correspondingly connected with the water supplementing ports of the storage battery monomers; each floating ball water stop valve corresponds to one connecting port and is communicated with the fluid distribution channel through fluid, and the floating ball water stop valves are used for being automatically closed when the liquid level is detected so as to control water replenishing to be stopped; and each concentration indicating device corresponds to one connecting port and is used for indicating the concentration parameter of the electrolyte in real time.

Description

Technical Field

[0001] This invention relates to the field of auxiliary transportation equipment technology in coal mines, specifically a fully automatic electrolyte replenishment system and water replenishment method for a special type of lead-acid battery used in coal mines. Background Technology

[0002] Special lead-acid batteries for coal mines are mainly used as power sources for underground auxiliary transportation equipment and are one of the energy sources for the operation of underground equipment in coal mines.

[0003] With the increasing demand for intelligent and green development in coal mines, electric auxiliary equipment powered by storage batteries is gradually replacing diesel-powered underground auxiliary transportation equipment due to its advantages of zero pollution and low noise. Storage batteries have become one of the main power sources for underground material transportation equipment. Due to the explosion-proof safety requirements of underground coal mines, special lead-acid batteries for coal mines are used.

[0004] In the charging and discharging chemical reactions of special lead-acid batteries used in coal mines, hydrogen gas is produced during the reaction of PbSO4 and H2O, consuming H2O. Therefore, it is necessary to frequently add water to maintain the batteries, adjust the electrolyte density, improve the battery's charging and discharging chemical performance, and increase battery capacity and lifespan. Special lead-acid batteries used in coal mines typically have a single cell rated voltage of 2V. Taking the explosion-proof special power supply unit DXT240 / 620 as an example, it uses a total of 120 620Ah cells. The batteries require water replenishment maintenance at least once a week. Due to differences in the condition of each cell, the amount of water added varies. Therefore, maintenance personnel need to add different amounts of distilled water to each battery separately, avoiding overfilling and electrolyte overflow. This requires 120 water replenishment operations for 120 batteries, resulting in a heavy workload and the potential for different electrolyte concentrations after water replenishment, increasing battery pack imbalance and affecting battery lifespan.

[0005] Therefore, how to change the current situation of low water maintenance of special lead-acid batteries for coal mines in the existing technology has become an urgent problem to be solved by those skilled in the art. Summary of the Invention

[0006] To address the aforementioned problems, this invention provides a fully automatic electrolyte replenishment system and method for a special type of lead-acid battery used in coal mines.

[0007] This invention adopts the following technical solution: a fully automatic electrolyte replenishment system for a special type of lead-acid battery used in coal mines, comprising: The water replenishment platform has an internal fluid distribution channel for distributing the water replenishment fluid; The water inlet is located at one end of the water replenishment platform and is used to connect to an external water source; Multiple connection ports are located at the lower part of the water replenishment platform for connecting to the water replenishment ports of individual battery cells. Multiple float stop valves, each float stop valve corresponding to a connection port and in fluid communication with the fluid distribution channel, the float stop valves being used to automatically close when the liquid level is detected to control the interruption of water replenishment; Multiple concentration indicators, each corresponding to a connection port, are used to indicate the concentration parameters of the electrolyte in real time.

[0008] In some embodiments, the fluid distribution channel is an S-shaped pipe formed inside the water replenishment platform; the shape of the S-shaped pipe is configured to optimize fluid distribution and pressure balance.

[0009] In some embodiments, the float stop valve is a normally open valve, configured to keep the valve port open when not in contact with liquid, and when the float comes into contact with the liquid surface in the battery cell, the float moves upward to automatically close the valve port; the float stop valve is located in the connection port and achieves liquid level sensing through mechanical linkage.

[0010] In some embodiments, the concentration indicator includes a concentration indicator with a concentration warning line for visual indication of whether the electrolyte specific gravity is below a preset threshold; the concentration indicator passes through the water replenishment platform and extends beyond its upper surface for easy observation by maintenance personnel.

[0011] In some embodiments, a water pressure gauge is also included, installed at the water inlet and configured to monitor the inlet water pressure; when all float stop valves are closed, the water pressure gauge detects an increase in pressure and triggers a signal to stop the water supply, thereby achieving fully automated control.

[0012] An automatic water replenishment method for a special type of lead-acid battery used in coal mines includes the following steps: Provides fully automated electrolyte replenishment systems for special lead-acid batteries used in coal mines; Connect the connection port of the system to the water inlet of the battery cell to form a sealed passage; Water is supplied to the system through the inlet, and the water flows to each connection port through the fluid distribution channel; Automatic water replenishment process: The float valve monitors the liquid level of each battery cell. When the liquid level touches the float, the valve closes to stop replenishing water to that cell, thus achieving a consistent liquid level. The concentration indicator device monitors the electrolyte concentration of each cell in real time and adjusts the concentration according to the indication to reduce battery variability.

[0013] In some embodiments, the automatic water supply control process includes a pressure control step: when all float valves are closed, the water pressure at the inlet is monitored in real time by the water pressure gauge; if the water pressure exceeds the rated value, a signal is automatically sent to stop the water supply to prevent system overpressure.

[0014] In some embodiments, the concentration indicator provides a visual warning via a concentration warning line on the concentration indicator; When the concentration warning line is below the upper surface of the water replenishment platform, it is determined that the electrolyte concentration is too low, and maintenance personnel will add electrolyte to adjust the concentration.

[0015] In some embodiments, a concentration imbalance handling step is also included: when the concentration warning line of the concentration indicator (4) shows that the electrolyte concentration is lower than the threshold, the maintenance personnel suspend the water replenishment operation and directly replenish the electrolyte through the connection port until the concentration indicator (4) returns to the normal range, so as to optimize the battery pack balance.

[0016] Compared with the prior art, the present invention has the following beneficial effects: This invention relates to a fully automatic electrolyte replenishment system for special lead-acid batteries used in coal mines, comprising: a water replenishment platform, a water inlet, a float valve, a concentration indicator, and a connection port. The fully automatic replenishment system ensures that the electrolyte level is equal after replenishment by using float valves of the same height, and that the liquid volume in different cells is the same. This prevents over-replenishment from causing electrolyte overflow onto the battery surface, which could lead to short circuits or other potential malfunctions. Furthermore, the system automates battery replenishment maintenance by controlling water pressure changes at the inlet, improving replenishment efficiency and reducing the workload of personnel. The concentration indicator's warning line can detect cells with low electrolyte specific gravity, allowing maintenance personnel to add electrolyte to adjust the concentration, reducing differences between cells, improving battery performance and lifespan, and ultimately enhancing the performance and efficiency of mining battery vehicles. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the fully automated fluid replenishment system of the present invention; Figure 2 This is a schematic diagram of the structure of the special lead-acid battery for coal mines according to the present invention; Figure 3 This is a schematic diagram showing the connection between the fully automatic liquid replenishment system of the present invention and the special lead-acid battery for coal mines; Figure 4 This is a schematic diagram of the fully automated fluid replenishment system of the present invention. Among them, 1 is the water replenishment platform, 2 is the water inlet, 3 is the float stop valve, 4 is the concentration indicator, 5 is the connection port, 21 is the battery box shell, 22 is the single battery, 23 is the water replenishment port, and 201 is the water pressure gauge. Detailed Implementation

[0018] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below. Obviously, the described embodiments are some embodiments of the present invention, but not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0019] like Figure 1-4 As shown, a fully automatic electrolyte replenishment system for a special type of lead-acid battery used in coal mines includes: a replenishment platform 1, which has a fluid distribution channel inside for distributing replenishment fluid; a water inlet 2, located at one end of the replenishment platform 1 for connecting to an external water source; multiple connection ports 5, located at the lower part of the replenishment platform 1 for corresponding connection to the replenishment ports 23 of individual battery cells; multiple float stop valves 3, each float stop valve 3 corresponding to one connection port 5 and fluidly connected to the fluid distribution channel, the float stop valves 3 being used to automatically close when the liquid level is detected to control the interruption of replenishment; and multiple concentration indicators, each concentration indicator corresponding to one connection port 5, for real-time indication of electrolyte concentration parameters.

[0020] The fluid distribution channel is an S-shaped pipe formed inside the water replenishment platform 1; the shape of the S-shaped pipe is configured to optimize fluid distribution and pressure balance.

[0021] The float stop valve is a normally open valve, configured to keep the valve port open when not in contact with liquid. When the float comes into contact with the liquid surface in the battery cell, the float moves upward and automatically closes the valve port. The float stop valve 3 is located in the connection port 5 and achieves liquid level sensing through mechanical linkage.

[0022] The concentration indicator device includes a concentration indicator 4, which is provided with a concentration warning line to visually indicate whether the specific gravity of the electrolyte is lower than a preset threshold. The concentration indicator 4 passes through the water replenishment platform 1 and extends beyond its upper surface, making it easy for maintenance personnel to observe directly.

[0023] It also includes a water pressure gauge 201, which is installed at the water inlet 2 and configured to monitor the water inlet pressure; when all float valves 3 are closed, the water pressure gauge (201) detects the pressure increase and triggers a signal to stop the water supply, thus realizing fully automated control.

[0024] In this specific embodiment, such as Figure 2As shown, the special lead-acid battery for coal mines has an external battery box casing 21, and an internal casing consisting of multiple individual cells 22 of the specified specifications. Each individual cell 22 has a water inlet 23. When performing water replenishment maintenance, each cell needs to be replenished with water individually, and the amount of water added varies. Maintenance personnel need to manually observe whether the battery has been replenished with water appropriately before stopping the replenishment. This maintenance method results in a large amount of manual labor and is prone to over-filling, causing electrolyte to overflow from the battery surface and creating potential faults such as short circuits.

[0025] Specifically, such as Figure 3 As shown, when using the fully automatic electrolyte replenishment system, connection port 5 is connected to water inlet 23. The number of connection ports 5 and water inlets 23 are equal, and their positions correspond. Each connection port 5 contains a float stop valve 3 and a concentration indicator 4, which can control the replenishment of water to each individual battery cell and measure the electrolyte concentration of each individual battery cell. The concentration indicator 4 is positioned above the upper surface of the replenishment platform 1 for easy observation.

[0026] Specifically, such as Figure 4 As shown, when the fully automatic electrolyte replenishment system is connected to the special lead-acid battery for coal mines, a water source is connected, and water enters through inlet 2. The water flows through the S-shaped pipe inside the replenishment channel and into each float stop valve 3. Taking battery cell A as an example, when the liquid level in the cell is lower than the float stop valve, the valve is normally open, and the fully automatic replenishment system continuously replenishes the electrolyte. Taking battery cells B and C as examples, when the liquid level contacts the float stop valve, the water pressure causes the float to move upward, closing the valve and stopping the replenishment. When all valves are closed, because the float stop valves are installed in the same position, i.e., the electrolyte level is the same, the final liquid volume in each cell is equal, meeting the battery usage standards. At this time, when water continues to enter from inlet 2, because all stop valves are closed, the water pressure in the replenishment platform increases. When the pressure gauge 201 at inlet 2 detects a pressure value greater than the rated value, it sends a signal to the system, stopping water intake from inlet 2.

[0027] Taking cells B and C as examples, when the liquid surface contacts the float stop valve 3 until the valve closes, the liquid volume inside each cell is the same. The liquid density inside each cell can be measured using the concentration indicator 4. Due to differences between cells, the height of the concentration indicator 4 above the upper surface of the water replenishment platform 1 varies. The concentration indicator 4 has a concentration warning line. When the concentration warning line is below the upper surface of the water replenishment platform 1, it indicates that the electrolyte concentration in the cell is too low. Continued use may affect battery performance, requiring separate replenishment of electrolyte to balance the electrolyte concentration.

[0028] The fully automatic electrolyte replenishment system ensures that the liquid volume in different cells is the same after replenishment by setting float stop valves of the same height, and controls the water input by changing the water pressure at the inlet, thus automating the battery replenishment and maintenance, improving replenishment efficiency, and reducing the labor intensity of workers. The concentration warning line on the concentration indicator can detect cells with low electrolyte specific gravity, making it easy for maintenance personnel to add electrolyte to adjust the concentration, reduce the difference between cells, improve battery performance and service life, and thus improve the performance and efficiency of mining battery vehicles.

[0029] A method for replenishing water in a special type of lead-acid battery used in coal mines includes the following steps: Provides fully automated electrolyte replenishment systems for special lead-acid batteries used in coal mines; Connect the connection port of the system to the water inlet of the battery cell to form a sealed passage; Water is supplied to the system through the inlet, and the water flows to each connection port through the fluid distribution channel; Automatic water replenishment process: The liquid level of each battery cell is monitored by the float stop valve. When the liquid level touches the float, the valve closes to stop water replenishment to that cell, thus achieving a consistent liquid level. Pressure control steps: When all float stop valves 3 are closed, the water pressure at the inlet 2 is monitored in real time by the water pressure gauge 201. If the water pressure exceeds the rated value, a signal is automatically sent to stop water supply to prevent system overpressure.

[0030] The concentration indicator device monitors the electrolyte concentration of each cell in real time and adjusts the concentration according to the indication to reduce battery variability.

[0031] The concentration indicator provides a visual warning via a concentration warning line on the concentration indicator 4; When the concentration warning line is lower than the upper surface of the water replenishment platform 1, it is determined that the electrolyte concentration is too low, and maintenance personnel will add electrolyte to adjust the concentration.

[0032] It also includes a concentration imbalance handling step: when the concentration warning line of the concentration indicator 4 shows that the electrolyte concentration is lower than the threshold, the maintenance personnel stop the water replenishment operation and directly replenish the electrolyte through the connection port 5 until the concentration indicator 4 returns to the normal range, so as to optimize the battery pack balance.

[0033] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, and not to limit them. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A fully automatic electrolyte replenishment system for a special type of lead-acid battery used in coal mines, characterized in that, include: The water replenishment platform (1) has a fluid distribution channel inside for distributing water replenishment fluid; The water inlet (2) is located at one end of the water replenishment platform (1) and is used to connect to an external water source; Multiple connection ports (5) are provided at the lower part of the water replenishment platform (1) for corresponding connection with the water replenishment port (23) of the battery cell; Multiple float stop valves (3), each float stop valve (3) corresponds to a connection port (5) and is in fluid communication with the fluid distribution channel. The float stop valves (3) are used to automatically close when the liquid level is detected to control the interruption of water replenishment. Multiple concentration indicators, each corresponding to a connection port (5), are used to indicate the concentration parameters of the electrolyte in real time.

2. The fully automatic electrolyte replenishment system for a special type of lead-acid battery for coal mines according to claim 1, characterized in that, The fluid distribution channel is an S-shaped pipe formed inside the water replenishment platform (1); the shape of the S-shaped pipe is configured to optimize fluid distribution and pressure balance.

3. The fully automatic electrolyte replenishment system for special lead-acid batteries used in coal mines according to claim 1, characterized in that, The float stop valve is a normally open valve, configured to keep the valve port open when not in contact with liquid. When the float comes into contact with the liquid surface in the battery cell, the float moves upward to automatically close the valve port. The float stop valve (3) is located inside the connection port (5) and achieves liquid surface sensing through mechanical linkage.

4. The fully automatic electrolyte replenishment system for a special type of lead-acid battery for coal mines according to claim 1, characterized in that, The concentration indicator device includes a concentration indicator (4), which is provided with a concentration warning line to visually indicate whether the specific gravity of the electrolyte is lower than a preset threshold. The concentration indicator (4) passes through the water replenishment platform (1) and extends beyond its upper surface, making it easy for maintenance personnel to observe directly.

5. The fully automatic electrolyte replenishment system for a special type of lead-acid battery for coal mines according to claim 1, characterized in that, It also includes a water pressure gauge (201), which is installed at the water inlet (2) and configured to monitor the water inlet pressure; when all float stop valves (3) are closed, the water pressure gauge (201) detects the pressure increase and triggers a signal to stop the water supply, thereby realizing fully automated control.

6. A method for replenishing water in a special type of lead-acid battery used in coal mines, characterized in that, Includes the following steps: Provides a fully automatic electrolyte replenishment system for a special type of lead-acid battery for coal mines as described in any one of claims 1 to 5; Connect the connection port (5) of the system to the water inlet (23) of the battery cell to form a sealed passage; Water is supplied to the system through the inlet (2), and the water flows to each connection port through the fluid distribution channel; Automatic water replenishment process: The liquid level of each battery cell is monitored by the float stop valve (3). When the liquid level contacts the float, the float stop valve (3) closes to stop replenishing water to that cell, thereby achieving a consistent liquid level. The concentration indicator device monitors the electrolyte concentration of each cell in real time and adjusts the concentration according to the indication to reduce battery variability.

7. The water replenishment method for a special type of lead-acid battery for coal mines according to claim 6, characterized in that, The automatic water replenishment process includes a pressure control step: when all float stop valves (3) are closed, the water pressure at the inlet (2) is monitored in real time by the water pressure gauge (201). If the water pressure exceeds the rated value, a signal is automatically sent to stop the water supply to prevent the system from being over-pressured.

8. The water replenishment method for a special type of lead-acid battery for coal mines according to claim 6, characterized in that, The concentration indicator provides a visual warning through the concentration warning line on the concentration indicator (4); When the concentration warning line is lower than the upper surface of the water replenishment platform (1), it is determined that the electrolyte concentration is too low, and maintenance personnel replenish electrolyte to adjust the concentration.

9. The water replenishment method for a special type of lead-acid battery for coal mines according to claim 6, characterized in that, It also includes a concentration imbalance handling step: when the concentration warning line of the concentration indicator (4) shows that the electrolyte concentration is lower than the threshold, the maintenance personnel stop the water replenishment operation and directly replenish the electrolyte through the connection port (5) until the concentration indicator (4) returns to the normal range, so as to optimize the battery pack balance.

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