An electrolyte solution preparation automatic control system and method

Abstract

The application discloses an electrolyte solution preparation automatic control system and method, and relates to the technical field of electrolyte solution preparation, in particular to an electrolyte solution preparation automatic control system and method. The system comprises a PLC control circuit, a water injection control module, a preparation control module, a heating control module and a discharge control module. The water injection control module is in communication connection with the PLC control circuit and is used for controlling the water adding amount in the electrolyte solution preparation process. The preparation control module is in communication connection with the PLC control circuit and is used for controlling the preparation adding amount in the electrolyte solution preparation process. The heating control module is in communication connection with the PLC control circuit and is used for controlling the preparation temperature of the electrolyte preparation device. The discharge control module is in communication connection with the PLC control circuit and is used for controlling the discharge speed and discharge flow of the electrolyte solution preparation. The application solves the technical problems of low efficiency, low precision and strong human subjectivity in the preparation process in the prior art.

Description

Technical Field

[0001] This invention relates to the field of liquid battery manufacturing control technology, specifically to an automatic control system and method for electrolyte preparation. Background Technology

[0002] Liquid fuel cells typically use liquid fuel (methanol or ethanol) aqueous solutions or steam as fuel sources, without requiring hydrogen production from the reforming of liquid fuel (methanol or ethanol), gasoline, or natural gas for power generation. Compared to proton exchange membrane fuel cells (PEMFCs), direct liquid fuel cells offer advantages such as rapid low-temperature start-up, clean and environmentally friendly fuels, and simple battery structure. This makes direct liquid (methanol or ethanol) fuel cells a potential mainstream choice for future portable applications. Electrolyte preparation is a technique used in electrochemical processes to prepare electrolyte solutions, aiming to improve the efficiency, stability, and reliability of the electrochemical process. The electrolyte is a crucial factor in electrochemical processes. Its solubility, concentration, viscosity, and stability directly affect the efficiency and quality of the electrochemical process.

[0003] Electrolyte preparation is a technique used in electrochemical processes to prepare electrolyte solutions, aiming to improve the efficiency, stability, and reliability of these processes. The electrolyte is a crucial factor in electrochemical processes. Its solubility, concentration, viscosity, and stability directly affect the efficiency and quality of the electrochemical process. Traditional electrolyte preparation processes typically employ manual weighing or evaporation concentration methods, which are inefficient, prone to errors, and unsuitable for large-scale production. Summary of the Invention

[0004] The purpose of this invention is to overcome the above-mentioned technical deficiencies and provide an automatic control system and method for electrolyte preparation, solving the technical problems of low efficiency, low accuracy and strong human subjectivity in the preparation process of manual electrolyte preparation in the prior art.

[0005] To achieve the above-mentioned technical objectives, the present invention adopts the following technical solution:

[0006] In a first aspect, the present invention provides an automatic control system for electrolyte preparation, comprising:

[0007] PLC control circuit, water injection control module, batching control module, heating control module and discharge control module;

[0008] The water injection control module is communicatively connected to the PLC control circuit and is used to control the amount of water added during the electrolyte preparation process.

[0009] The ingredient control module is communicatively connected to the PLC control circuit and is used to control the amount of ingredients added during the electrolyte preparation process.

[0010] The heating control module is communicatively connected to the PLC control circuit and is used to control the feeding temperature of the electrolyte feeding device.

[0011] The discharge control module is communicatively connected to the PLC control circuit and is used to control the discharge speed and flow rate of the electrolyte solution.

[0012] Secondly, the present invention also provides an automatic control method for electrolyte preparation, applied to the aforementioned automatic control system for electrolyte preparation, the method comprising:

[0013] Obtain a water injection start command, and start the water injection control module according to the water injection start command to control the amount of water added during the electrolyte preparation process;

[0014] Obtain the ingredient preparation start command, and start the ingredient preparation control module according to the ingredient preparation start command to control the amount of ingredients added during the electrolyte preparation process;

[0015] Obtain a heating start command, and start the heating control module to operate according to the heating start command, thereby controlling the feeding temperature of the electrolyte mixing device;

[0016] Based on the water injection start command and the ingredient preparation start command, a discharge start command is obtained, and the discharge speed and discharge flow rate of the electrolyte are controlled according to the discharge start command.

[0017] In some embodiments, the water injection start command includes a water injection preparation command, a water injection pump start command, a water injection pre-stop command, and a water injection pump shut-off command;

[0018] The water injection preparation command includes turning on the first anode switch and turning off the second anode switch. The first anode switch and the second anode switch are distributed along the direction of the water injection passage, and the first anode switch and the second anode switch are respectively located on both sides of the water injection pump.

[0019] The water injection pump start command includes starting the water injection pump and opening the second anode switch, wherein the start time of the water injection pump is earlier than the opening time of the second anode switch;

[0020] The water injection pre-stop command includes closing the second anode switch;

[0021] The water injection pump shutdown command includes stopping the water injection pump and closing the first anode switch.

[0022] In some embodiments, starting the water injection control module according to the water injection start command includes:

[0023] Upon receiving the water injection preparation command, when the first anode switch is in the open state and the second anode switch is in the open / closed state, the water injection pump is started to inject water into the electrolyte process.

[0024] In some embodiments, the batching start command includes an anode batching start command, which includes an anode batching preparation command, an anode batching pump start command, an anode stirring command, an internal circulation command, and an anode feeding command;

[0025] The anode feeding preparation command includes turning on the third anode switch, turning on / off the fourth anode switch, turning off the fifth anode switch, and turning off the sixth anode switch. The third and fourth anode switches are distributed along the feeding path and are located on both sides of the feeding pump. The fifth and sixth anode switches are distributed along the discharge path.

[0026] The anode batching pump start command includes starting the anode batching pump and turning on the fourth anode switch;

[0027] The anode stirring command includes a liquid level in the anode batch tube that is greater than a preset liquid level value;

[0028] The internal circulation commands include opening and closing the third anode switch, opening the fifth anode switch, and opening the sixth anode switch.

[0029] The anode feeding command includes starting the anode feeding pump.

[0030] In some embodiments, the heating start command includes a hot water circulation command and a cathode preheating command;

[0031] The hot water circulation command includes the water tank level being greater than the preset water tank level value and the hot water pump starting;

[0032] The cathode preheating command includes activating the heat exchange plate and ensuring the cathode buffer liquid level is within the preset heating level range.

[0033] In some embodiments, the batching start command includes a cathode batching start command, which includes a cathode batching preparation command, a cathode batching pump start command, a cathode feeding command, and a cathode stirring command;

[0034] The cathode preparation command includes turning on the sixth cathode switch, turning off the seventh cathode switch, and turning off the eighth cathode switch; wherein the sixth cathode switch is located on the cathode solution preparation path;

[0035] The cathode feed pump start command includes starting the cathode feed pump;

[0036] The cathode feeding instruction includes when the cathode buffer tank capacity is within a preset solution range;

[0037] The cathode stirring command includes cathode activation and material feeding.

[0038] In some embodiments, prior to receiving the cathode feeding start command, the process includes:

[0039] Receive the heating start command and adjust the temperature of the cathode feeding environment to the optimal temperature according to the heating start command;

[0040] Based on the optimal temperature, a cathode feeding start command is obtained to control cathode feeding.

[0041] In some embodiments, the discharge start command further includes a cathode discharge command, which includes closing the fourth cathode switch, stopping the cathode feeding pump, closing the third cathode switch, and opening the fifth cathode switch, wherein the third cathode switch and the fourth cathode switch are both located in the liquid distribution passage.

[0042] In some embodiments, the discharge start command includes an anode discharge command, which includes an internal circulation stop command, a discharge preparation command, and an anode end command.

[0043] The internal circulation stop command includes closing the fourth anode switch and opening / closing the sixth anode switch;

[0044] The discharge preparation command includes turning on the fifth anode switch, turning on the seventh anode switch, turning off the first anode switch, and turning off the second anode switch, wherein the seventh anode switch is located in the discharge passage;

[0045] The anode termination command includes shutting down the anode feed pump, closing the fifth anode switch, and closing the seventh anode switch.

[0046] Compared with existing technologies, the automatic control system and method for electrolyte preparation provided by this invention, by setting up a PLC control circuit, a water injection control module, a material dispensing control module, a heating control module, and a discharge control module, enables automated control and data acquisition of the electrolyte preparation process through PLC control of the electrolyte preparation system, thereby improving production efficiency. Furthermore, by controlling the water injection module and the material dispensing module through PLC, the electrolyte preparation can be more precise, and the overall performance of the preparation system is more stable and reliable compared to manual operation, thus improving the production efficiency and quality of electrolyte preparation and meeting the high-quality requirements of electrochemical processes. Attached Figure Description

[0047] Figure 1 This is a schematic diagram of an embodiment of the automatic electrolyte preparation control system provided by the present invention;

[0048] Figure 2 This is a flowchart of an embodiment of the automatic control method for electrolyte preparation provided by the present invention. Detailed Implementation

[0049] To make the objectives, technical solutions, and advantages of this invention clearer, the invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and not intended to limit the invention.

[0050] PLC-controlled electrolyte preparation utilizes PLC automation technology to achieve automated, precise metering, and reliable stability in the electrolyte preparation process. A PLC control system is a high-performance, programmable electronic control system capable of automating process control and data acquisition, widely used in industrial production and manufacturing. A typical PLC-controlled electrolyte preparation system includes modules for water injection, dispensing, heating, and discharging. These modules can precisely control and meter the electrolyte's composition, concentration, and temperature based on pre-set parameters, ensuring the accuracy and stability of the electrolyte preparation process. During production, the PLC control system can automatically control the electrolyte preparation process and adjust and optimize it according to demand, thereby improving production efficiency and quality while reducing costs and human resource input. Electrolyte preparation is a crucial step in electrochemical processes. The composition and quality of the electrolyte directly affect the rate and effectiveness of the electrochemical reaction. Employing a PLC-controlled electrolyte preparation system automates the electrolyte preparation process, reducing instability and inaccuracies in electrolyte composition caused by human error. Furthermore, PLC-controlled electrolyte preparation systems enable precise metering and stable control of the electrolyte, improving its quality and stability. In electrochemical processes, this system significantly enhances production efficiency and quality while reducing the skill requirements of manual operators, thereby lowering costs and operational risks.

[0051] This invention provides an automatic control system for electrolyte preparation. Please refer to [link to relevant documentation]. Figure 1 It includes: PLC control circuit 11, water injection control module 12, material dispensing control module 13, heating control module 14 and material discharge control module 15;

[0052] The water injection control module is communicatively connected to the PLC control circuit and is used to control the amount of water added during the electrolyte preparation process.

[0053] The ingredient control module is communicatively connected to the PLC control circuit and is used to control the amount of ingredients added during the electrolyte preparation process.

[0054] The heating control module is communicatively connected to the PLC control circuit and is used to control the feeding temperature of the electrolyte feeding device.

[0055] The discharge control module is communicatively connected to the PLC control circuit and is used to control the discharge speed and flow rate of the electrolyte solution.

[0056] In this embodiment, by setting up a PLC control circuit, a water injection control module, a batching control module, a heating control module, and a discharge control module, the PLC-controlled electrolyte preparation system can achieve automated control and data acquisition of the electrolyte preparation process, improving production efficiency. Furthermore, by controlling the water injection and batching modules with PLC, the electrolyte preparation can be more precise, and the overall performance of the preparation system is more stable and reliable compared to manual operation. This improves the production efficiency and quality of electrolyte preparation, meeting the high-quality requirements of electrochemical processes.

[0057] It should be noted that all parameters involved in the water injection control module, the batching control module, the heating control module, and the discharge control module have been set in advance.

[0058] It should be noted that the water injection control module in this embodiment can control the water injection process of electrolyte preparation through PLC control instructions. The water injection path includes multiple PLC control switches and a water injection pump. The water injection pump and multiple PLC control switches are controlled by the PLC program to achieve automatic control of water injection in the electrolyte preparation process.

[0059] Furthermore, the electrolyte batching control module can control the electrolyte batching process via PLC control instructions. This process includes two steps: cathode batching and anode batching. Specifically, anode batching includes an anode batching pump and multiple PLC-controlled anode batching switches. The PLC program controls the opening and closing of the anode batching switches and the anode batching pump, thereby achieving automatic anode batching control.

[0060] Specifically, the cathode feeding process includes a cathode feeding pump and multiple PLC cathode feeding switches. The cathode feeding of the electrolyte is controlled by PLC control instructions. The cathode feeding process includes a cathode feeding pump and multiple PLC-controlled cathode feeding switches. The opening and closing of the cathode feeding switches and the cathode feeding pump are controlled by the PLC program, thereby realizing automatic control of cathode feeding.

[0061] Furthermore, the heating control module can control the electrolyte cathode feeding and heating process through PLC control instructions. Specifically, the heating control module includes a hot water pump and multiple PLC-controlled hot water circulation switches. The hot water circulation switches, anode feeding switches, and cathode feeding switches overlap and repeat. The hot water pump and multiple hot water circulation switches are controlled by PLC control instructions to achieve automatic heating control.

[0062] Furthermore, the discharge control module can control the electrolyte discharge process through PLC instructions. The discharge process includes cathode discharge and anode discharge. Specifically, cathode discharge includes a discharge switch controlled by PLC. The PLC control instructions control the cathode feeding to stop, and then control the opening and closing of the discharge switch, thereby realizing automatic control of cathode discharge.

[0063] Furthermore, the anode discharge includes a PLC-controlled discharge switch. The PLC control commands stop the anode feeding and then control the opening and closing of the discharge switch, thereby achieving automatic control of anode discharge.

[0064] Based on the above-described automatic electrolyte preparation control system, this invention also provides an automatic electrolyte preparation control method. Please refer to [link to relevant documentation]. Figure 2 The methods include:

[0065] S201. Obtain the water injection start command, and start the water injection control module according to the water injection start command to control the amount of water added during the electrolyte preparation process;

[0066] S202. Obtain the ingredient preparation start command, and start the ingredient preparation control module according to the ingredient preparation start command to control the amount of ingredients added during the electrolyte preparation process;

[0067] S203. Obtain a heating start command, and start the heating control module according to the heating start command to control the feeding temperature of the electrolyte mixing device;

[0068] S204. Based on the water injection start command and the ingredient mixing start command, obtain the discharge start command, and control the discharge speed and discharge flow rate of the electrolyte according to the discharge start command.

[0069] In this embodiment, the parameters of each module corresponding to the electrolyte preparation system are set. When the electrolyte preparation system starts working, the PLC control circuit receives the water injection start command and the material preparation start command and starts the water injection control module and the material preparation control module to realize the automatic addition of water and materials in the electrolyte and precisely control the amount added to ensure the stability and accuracy of the electrolyte composition and properties. Furthermore, the PLC control circuit starts the heating control module according to the heating start command to realize the material preparation temperature control of the electrolyte to ensure the stability and reliability of the electrolyte. Finally, based on the material preparation completion information fed back by the material preparation start command, the discharge speed and discharge flow rate of the electrolyte are controlled according to the discharge start command to ensure the stability and quality of the electrolyte.

[0070] In some embodiments, the water injection start command includes a water injection preparation command, a water injection pump start command, a water injection pre-stop command, and a water injection pump shut-off command;

[0071] The water injection preparation command includes turning on the first anode switch and turning off the second anode switch. The first anode switch and the second anode switch are distributed along the direction of the water injection passage, and the first anode switch and the second anode switch are respectively located on both sides of the water injection pump.

[0072] The water injection pump start command includes starting the water injection pump and opening the second anode switch, wherein the start time of the water injection pump is earlier than the opening time of the second anode switch;

[0073] The water injection pre-stop command includes closing the second anode switch;

[0074] The water injection pump shutdown command includes stopping the water injection pump and closing the first anode switch.

[0075] In this embodiment, the water injection process is initiated with a single button:

[0076] The first step, program startup: "Manually press the button";

[0077] The second step is program preparation. During water injection preparation, the PLC confirms that the second anode switch is closed and the first anode switch is open (confirmed via valve switch feedback signals). If the status is inconsistent, the PLC issues a command to ensure the conditions are met.

[0078] The third step is the water injection process. The water injection pump is started and the water injection process is initiated (the second anode switch opens with a delay of 5.0 seconds). "After the conditions for the second step are met, the second step will start automatically."

[0079] Step 4, program ends. End the water filling process: "Press the button manually, manually determine the water filling condition, and manually stop."

[0080] To terminate the program, first turn off the second anode switch, then after a 5.0s delay, stop the water pump and turn off the first anode switch.

[0081] In some embodiments, starting the water injection control module according to the water injection start command includes:

[0082] Upon receiving the water injection preparation command, when the first anode switch is in the open state and the second anode switch is in the open / closed state, the water injection pump is started to inject water into the electrolyte process.

[0083] In this embodiment, to ensure that the water injection pump does not run dry, the first anode switch must be turned on and the second anode switch must be turned off.

[0084] In some embodiments, the batching start command includes an anode batching start command, which includes an anode batching preparation command, an anode batching pump start command, an anode stirring command, an internal circulation command, and an anode feeding command;

[0085] The anode feeding preparation command includes turning on the third anode switch, turning on / off the fourth anode switch, turning off the fifth anode switch, and turning off the sixth anode switch. The third and fourth anode switches are distributed along the feeding path and are located on both sides of the feeding pump. The fifth and sixth anode switches are distributed along the discharge path.

[0086] The anode batching pump start command includes starting the anode batching pump and turning on the fourth anode switch;

[0087] The anode stirring command includes a liquid level in the anode batch tube that is greater than a preset liquid level value;

[0088] The internal circulation commands include opening and closing the third anode switch, opening the fifth anode switch, and opening the sixth anode switch.

[0089] The anode feeding command includes starting the anode feeding pump.

[0090] In this embodiment, the anode batch tank solution preparation process is started with a single click:

[0091] The first step is to start the program by manually pressing a button.

[0092] The second step is program preparation. The PLC confirms that the third anode switch is open, the fourth anode switch is closed, the fifth anode switch is closed, and the sixth anode switch is closed (confirmed via valve switch feedback signals). If the status is not met, the PLC issues a command to achieve the desired condition.

[0093] The third step is the liquid feeding procedure. The anode batching pump is started to feed liquid into the batch tank (the fourth anode switch opens with a 5.0s delay). "After the conditions of the second step are met, the second step will then automatically begin."

[0094] During the process of liquid feeding into the batch tank, when the detected liquid level is greater than the set value X, the stirring shaft motor is started; otherwise, it stops.

[0095] The fourth step is the internal loop, which "immediately follows the self-running process in the third step."

[0096] When the liquid level reaches the set value Y (the level of one batch), the program automatically shuts off the third anode switch and then opens the fifth and sixth anode switches to begin internal circulation. Simultaneously, the feeding indicator light flashes to remind manual feeding to begin. Personnel first open the manual inlet valve of the emulsification tank (80%–90% opening). Once the liquid level in the emulsification tank submerges the emulsifier head, they open the manual outlet valve of the emulsification tank (45%–50% opening). Manual feeding begins after the liquid level stabilizes.

[0097] Furthermore, continuous feeding and mixing, and continuous internal circulation;

[0098] After all the powder is added, the bypass of the anode emulsification tank is cut off (first stop the anode batching pump, then close the emulsification tank inlet valve, and wait until all the liquid in the emulsification tank is sucked out before closing the emulsification tank outlet valve), and the internal circulation mixing continues until the mixing index is reached, and the material is ready to be discharged.

[0099] In some embodiments, the heating start command includes a hot water circulation command and a cathode preheating command;

[0100] The hot water circulation command includes the water tank level being greater than the preset water tank level value and the hot water pump starting;

[0101] The cathode preheating command includes activating the heat exchange plate and ensuring the cathode buffer liquid level is within the preset heating level range.

[0102] In this embodiment, the temperature of the cathode solution preparation path and solution preparation environment is raised to the optimal reaction temperature by receiving hot water circulation instructions and cathode preheating instructions, thereby improving the efficiency of solution preparation.

[0103] In a specific embodiment:

[0104] The first step, program startup: "Manually press the button";

[0105] The second step is program preparation: the water tank level must be greater than A = 800mm (confirmed via valve opening / closing feedback signal). If the status is not met, the PLC will issue a command or alarm to indicate that the condition has been met.

[0106] The third step is the circulation process. The hot water pump circulation process is started; "once the conditions of step two are met, step two will then begin automatically."

[0107] Step 4: End of program. The water circulation process ends. "Manually press the button, manually determine the stop conditions, and manually stop."

[0108] End the hot water circulation process.

[0109] In another specific embodiment, the cathode storage tank water preheating process is started with a single button:

[0110] The first step is to start the program by manually pressing a button (synchronized with the feeding process of the anode batch tank);

[0111] The second step is program preparation. The PLC confirms whether the corresponding valve is open or closed (confirmed through the valve's on / off feedback signal). If the status is inconsistent, the PLC determines and issues an instruction to meet the conditions.

[0112] The third step is to establish dynamic equilibrium. "After the conditions in the second step are met, the following steps will automatically run again from the second step":

[0113] a. Start the cathode solution pump; when the water tank level reaches the set value M, start the heating pump.

[0114] When the liquid level continues to rise and is detected to reach the set value range N = 650~750mm, the adjustment frequency is directly given to maintain the dynamic balance of the liquid level in the buffer tank.

[0115] It should be noted that the heating pump and the cathode liquid distribution pump operate at matched frequencies, with the cathode buffer tank level as the anchor point, and are dynamically adjusted to maintain a stable liquid level.

[0116] In some embodiments, the batching start command includes a cathode batching start command, which includes a cathode batching preparation command, a cathode batching pump start command, a cathode feeding command, and a cathode stirring command;

[0117] The cathode preparation command includes turning on the sixth cathode switch, turning off the seventh cathode switch, and turning off the eighth cathode switch; wherein the sixth cathode switch is located on the cathode solution preparation path;

[0118] The cathode feed pump start command includes starting the cathode feed pump;

[0119] The cathode feeding instruction includes when the cathode buffer tank capacity is within a preset solution range;

[0120] The cathode stirring command includes cathode activation and material feeding.

[0121] In this embodiment, the cathode solution preparation process is started with a single click:

[0122] The first step is to start the program by manually pressing a button.

[0123] The second step is program preparation. (Following the above-mentioned tank water preheating process) After the PLC confirms that the cathode tank water preheating program is running stably, the pipeline is switched, and the circulation system needs to return to a balanced state. After waiting for a certain period of time, it is determined whether the liquid level in the cathode mixing tank is maintained within the range of H1~H2 (600~800) mm for a duration of T=2.0 min. If the condition is met, the preparation work is completed, and the operator is reminded to start feeding. The stirring shaft motor is then started. Otherwise, the process of waiting for T=2.0 min continues until the preconditions for feeding are met, and the operator is reminded to start feeding. The operator first opens the manual inlet valve of the emulsification tank (opening degree 80%~90%). When the liquid level in the emulsification tank submerges the emulsifier head, the operator opens the manual outlet valve of the emulsification tank (opening degree 45%~50%). The stirring motor is started, and manual feeding begins after the liquid level stabilizes.

[0124] In some embodiments, the discharge start command further includes a cathode discharge command, which includes closing the fourth cathode switch, stopping the cathode feeding pump, closing the third cathode switch, and opening the fifth cathode switch, wherein the third cathode switch and the fourth cathode switch are both located in the liquid distribution passage.

[0125] In this embodiment, in order to make reasonable use of the heat generated by the anode feeding process in the cathode feeding process, the anode feeding is carried out first, then the cathode is heated, and finally the cathode feeding is carried out. This process is repeated, and each feeding cycle ends with the cathode discharging.

[0126] In some embodiments, the discharge start command includes an anode discharge command, which includes an internal circulation stop command, a discharge preparation command, and an anode end command.

[0127] The internal circulation stop command includes closing the fourth anode switch and opening / closing the sixth anode switch;

[0128] The discharge preparation command includes turning on the fifth anode switch, turning on the seventh anode switch, turning off the first anode switch, and turning off the second anode switch, wherein the seventh anode switch is located in the discharge passage;

[0129] The anode termination command includes shutting down the anode feed pump, closing the fifth anode switch, and closing the seventh anode switch.

[0130] In this embodiment, the anode batch tank discharge procedure (with the corresponding pipes manually connected) is initiated with a single button press:

[0131] The first step is to start the program by manually pressing a button.

[0132] Step 2, Program Preparation:

[0133] a. Stop the internal circulation operation, first turn off the fourth anode switch, delay for 5.0 seconds, then stop the anode solution pump and turn off the sixth anode switch to end the internal circulation process;

[0134] b. Preparing the discharge procedure:

[0135] The PLC confirms that the fifth anode switch is open, and the sixth, first, and second anode switches are closed (confirmed via valve switch feedback signals). If the status does not match, the PLC issues a command to ensure the conditions are met.

[0136] The third step is the program's end. To conclude the discharge process, manually press the button. Manually determine if discharge is complete and stop the process.

[0137] To terminate the program, first turn off the second anode switch, then after a 5.0s delay, stop the anode batching pump and turn off the fifth anode switch.

[0138] End the material discharge process.

[0139] The specific embodiments of the present invention described above do not constitute a limitation on the scope of protection of the present invention. Any other corresponding changes and modifications made in accordance with the technical concept of the present invention should be included within the scope of protection of the claims of the present invention.

Claims

1. An automatic control system for electrolyte preparation, characterized in that, include: PLC control circuit, water injection control module, batching control module, heating control module and discharge control module; The water injection control module is communicatively connected to the PLC control circuit and is used to control the amount of water added during the electrolyte preparation process. The ingredient control module is communicatively connected to the PLC control circuit and is used to control the amount of ingredients added during the electrolyte preparation process. The heating control module is communicatively connected to the PLC control circuit and is used to control the feeding temperature of the electrolyte feeding device. The discharge control module is communicatively connected to the PLC control circuit and is used to control the discharge speed and flow rate of the electrolyte solution. Obtain a water injection start command, and start the water injection control module according to the water injection start command to control the amount of water added during the electrolyte preparation process; Obtain the ingredient preparation start command, and start the ingredient preparation control module according to the ingredient preparation start command to control the amount of ingredients added during the electrolyte preparation process; Obtain a heating start command, and start the heating control module to operate according to the heating start command, thereby controlling the feeding temperature of the electrolyte mixing device; Based on the water injection start command and the ingredient preparation start command, a discharge start command is obtained, and the discharge speed and discharge flow rate of the electrolyte are controlled according to the discharge start command. The water injection start command includes a water injection preparation command, a water injection pump start command, a water injection pre-stop command, and a water injection pump shut-off command; The water injection preparation command includes turning on the first anode switch and turning off the second anode switch. The first anode switch and the second anode switch are distributed along the direction of the water injection passage, and the first anode switch and the second anode switch are respectively located on both sides of the water injection pump. The water injection pump start command includes starting the water injection pump and opening the second anode switch, wherein the start time of the water injection pump is earlier than the opening time of the second anode switch; The water injection pre-stop command includes closing the second anode switch; The water injection pump shutdown command includes stopping the water injection pump and closing the first anode switch.

2. The automatic electrolyte preparation control system according to claim 1, characterized in that, The step of starting the water injection control module according to the water injection start command includes: Upon receiving the water injection preparation command, when the first anode switch is in the open state and the second anode switch is in the open / closed state, the water injection pump is started to inject water into the electrolyte process.

3. The automatic electrolyte preparation control system according to claim 2, characterized in that, The batching start command includes an anode batching start command, which includes an anode batching preparation command, an anode batching pump start command, an anode stirring command, an internal circulation command, and an anode feeding command. The anode feeding preparation command includes turning on the third anode switch, turning on / off the fourth anode switch, turning off the fifth anode switch, and turning off the sixth anode switch. The third and fourth anode switches are distributed along the feeding path and are located on both sides of the feeding pump. The fifth and sixth anode switches are distributed along the discharge path. The anode batching pump start command includes starting the anode batching pump and turning on the fourth anode switch; The anode stirring command includes a liquid level in the anode batch tube that is greater than a preset liquid level value; The internal circulation commands include opening and closing the third anode switch, opening the fifth anode switch, and opening the sixth anode switch. The anode feeding command includes starting the anode feeding pump.

4. The automatic electrolyte preparation control system according to claim 1, characterized in that, The heating start command includes a hot water circulation command and a cathode preheating command; The hot water circulation command includes the water tank level being greater than the preset water tank level value and the hot water pump starting; The cathode preheating command includes activating the heat exchange plate and ensuring the cathode buffer liquid level is within the preset heating level range.

5. The automatic electrolyte preparation control system according to claim 1, characterized in that, The batching start command includes a cathode batching start command, which includes a cathode batching preparation command, a cathode batching pump start command, a cathode feeding command, and a cathode stirring command. The cathode preparation command includes turning on the sixth cathode switch, turning off the seventh cathode switch, and turning off the eighth cathode switch; wherein the sixth cathode switch is located on the cathode solution preparation path; The cathode feed pump start command includes starting the cathode feed pump; The cathode feeding instruction includes when the cathode buffer tank capacity is within a preset solution range; The cathode stirring command includes cathode activation and material feeding.

6. The automatic electrolyte preparation control system according to claim 5, characterized in that, Before receiving the cathode feeding start command, the following is included: Receive the heating start command and adjust the temperature of the cathode feeding environment to the optimal temperature according to the heating start command; Based on the optimal temperature, a cathode feeding start command is obtained to control cathode feeding.

7. The automatic electrolyte preparation control system according to claim 6, characterized in that, The discharge start command also includes a cathode discharge command, which includes closing the fourth cathode switch, stopping the cathode feeding pump, closing the third cathode switch, and opening the fifth cathode switch, wherein the third cathode switch and the fourth cathode switch are both located in the liquid distribution passage.

8. The automatic electrolyte preparation control system according to claim 3, characterized in that, The discharge start command includes an anode discharge command, which includes an internal circulation stop command, a discharge preparation command, and an anode end command. The internal circulation stop command includes closing the fourth anode switch and opening / closing the sixth anode switch; The discharge preparation command includes turning on the fifth anode switch, turning on the seventh anode switch, turning off the first anode switch, and turning off the second anode switch, wherein the seventh anode switch is located in the discharge passage; The anode termination command includes shutting down the anode feed pump, closing the fifth anode switch, and closing the seventh anode switch.

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