CN-117732343-B - Control method of slurry conveying system

CN117732343BCN 117732343 BCN117732343 BCN 117732343BCN-117732343-B

Abstract

The application discloses a control method of a slurry conveying system. The control method includes the controller confirming the real-time residual quantity of the slurry of the first stirring tank transmitted by the first detector. The controller confirms the real-time allowance of the slurry transferred from the second detector to the transfer pot. When the sum of the real-time residual quantity of the slurry of the transfer tank and the real-time residual quantity of the slurry of the first stirring tank is smaller than the calibrated capacity of the transfer tank, the controller controls the first stirring tank to convey the slurry until the ratio of the real-time residual quantity of the slurry of the first stirring tank to the calibrated capacity of the first stirring tank is within a first preset range. According to the method, the slurry conveying system can automatically empty the slurry in the stirring tank to throw in the preparation of the slurry in the next tank, manual tank opening confirmation is not needed, accuracy and production efficiency are improved, and the slurry in the stirring tank is not easy to be polluted due to tank opening.

Inventors

HUANG BICHENG

Assignees

厦门海辰储能科技股份有限公司

Dates

Publication Date: 20260512
Application Date: 20231220

Claims (11)

1. A control method of a slurry conveying system, wherein the slurry conveying system is applied to a coating machine, and is characterized by comprising a first stirring tank, a transfer tank, a first detector, a second detector and a controller; The first stirring tank is connected with the transfer tank, the first detector is arranged on the first stirring tank, the second detector is arranged on the transfer tank, and the controller is in communication connection with the first detector, the second detector and the first stirring tank; The control method comprises the following steps: The controller confirms the real-time residual quantity of the slurry of the first stirring tank transmitted by the first detector; The controller confirms the real-time residual quantity of the slurry of the transfer tank transmitted by the second detector; When the sum of the real-time residual quantity of the slurry in the transfer tank and the real-time residual quantity of the slurry in the first stirring tank is smaller than the calibrated capacity of the transfer tank, the controller controls the first stirring tank to convey the slurry to the transfer tank until the ratio of the real-time residual quantity of the slurry in the first stirring tank to the calibrated capacity of the first stirring tank is within a first preset range.
2. The method for controlling a slurry transporting system according to claim 1, wherein said slurry transporting system further comprises a feeding device, the feeding device is connected with the first stirring tank and is in communication connection with the controller; After the ratio of the real-time slurry remaining amount of the first stirring tank to the calibrated capacity of the first stirring tank is within a first preset range, the control method further comprises: the controller controls the feeding device to convey materials to the first stirring tank; the controller controls the first agitation tank to agitate to synthesize a new slurry.
3. The method for controlling a slurry transporting system according to claim 1, wherein said slurry transporting system further comprises a second agitation tank, the second stirring tank is connected with the transfer tank and is in communication connection with the controller; After the ratio of the real-time slurry remaining amount of the first stirring tank to the calibrated capacity of the first stirring tank is within a first preset range, the control method further comprises: When the real-time residual quantity of the slurry of the transfer tank is smaller than the calibrated capacity of the transfer tank, the controller confirms whether the transfer tank conveys the slurry to the outside of the transfer tank or not; When the transfer tank does not convey the slurry to the outside of the transfer tank, the controller confirms the real-time residual amount of the slurry of the second stirring tank; when the sum of the real-time residual quantity of the slurry of the second stirring tank and the real-time residual quantity of the slurry of the transfer tank is smaller than the calibrated capacity of the transfer tank, the controller controls the second stirring tank to convey the slurry to the transfer tank until the ratio of the real-time residual quantity of the slurry of the second stirring tank to the calibrated capacity of the second stirring tank is within a first preset range; Or alternatively, the first and second heat exchangers may be, And when the ratio of the real-time residual quantity of the slurry in the second stirring tank to the calibrated capacity of the second stirring tank is in a second preset range, the controller controls the second stirring tank to convey the slurry to the transfer tank.
4. The method of claim 2, further comprising a temporary storage tank assembly, the temporary storage tank assembly being connected to the transfer tank, the temporary storage tank assembly being connected to a coating head of the coater; The control method further includes: The controller confirms the real-time residual quantity of the slurry of the transfer tank transmitted by the second detector; when the ratio of the real-time residual quantity of the slurry in the transfer tank to the calibrated capacity of the transfer tank is within a second preset range, the controller confirms the real-time residual quantity of the slurry in the temporary storage tank assembly; When the real-time residual quantity of the slurry of the temporary storage tank assembly is smaller than the calibrated capacity of the temporary storage tank assembly, the controller controls the transfer tank to convey the slurry to the temporary storage tank assembly.
5. The method of controlling a slurry transport system according to claim 4, wherein after the first agitation tank synthesizes new slurry, the method of controlling further comprises: the controller confirms whether the transfer tank delivers slurry to the temporary storage tank assembly; When the transfer tank conveys slurry to the temporary storage tank assembly, the controller controls the transfer tank to continuously convey slurry to the temporary storage tank assembly until the ratio of the real-time residual quantity of the slurry of the transfer tank to the calibrated capacity of the transfer tank is within a first preset range, or the ratio of the real-time residual quantity of the slurry of the temporary storage tank assembly to the calibrated capacity of the temporary storage tank assembly is within a second preset range; when the transfer tank does not convey slurry to the temporary storage tank assembly, the controller controls the first stirring tank to convey slurry to the temporary storage tank assembly until the ratio of the real-time residual slurry amount of the transfer tank to the calibrated capacity of the transfer tank is within a second preset range.
6. The method of claim 5, wherein the temporary storage tank assembly comprises a first temporary storage tank, a second temporary storage tank and a third temporary storage tank, wherein the first temporary storage tank, the second temporary storage tank and the third temporary storage tank are all connected with the transfer tank, the first temporary storage tank and the third temporary storage tank are connected with a head coating head of the coating machine, and the second temporary storage tank is connected with a tail coating head of the coating machine; The control method further includes: when the ratio of the real-time residual quantity of the slurry in the transfer tank to the calibrated capacity of the transfer tank is within a second preset range, the controller confirms whether the first stirring tank conveys the slurry to the transfer tank or not; When the first stirring tank conveys the slurry to the transfer tank, the controller controls the first stirring tank to pause conveying the slurry to the transfer tank; when the first stirring tank does not convey the slurry to the transfer tank, the controller confirms the real-time residual quantity of the slurry of the first temporary storage tank, the second temporary storage tank and the third temporary storage tank; When the real-time residual quantity of the slurry of the first temporary storage tank, the real-time residual quantity of the slurry of the second temporary storage tank and the real-time residual quantity of the slurry of the third temporary storage tank are smaller than the respective calibration capacities, the controller controls the transfer tank to convey the slurry to the first temporary storage tank, the second temporary storage tank or the third temporary storage tank; when the ratio of the real-time residual quantity of the slurry in the first temporary storage tank, the second temporary storage tank or the third temporary storage tank to the respective calibration capacity is within a second preset range, the controller controls the transfer tank to suspend the slurry delivery to the first temporary storage tank, the second temporary storage tank or the third temporary storage tank.
7. The method of controlling a slurry transport system according to claim 6, wherein before the controller controls the transfer tank to transport slurry in the first temporary storage tank, the second temporary storage tank, or the third temporary storage tank, the method further comprises: The controller confirms whether the first temporary storage tank and the third temporary storage tank convey slurry to a machine head coating head of the coating machine; When the first temporary storage tank and the third temporary storage tank do not convey the slurry to the head of the coating machine, the controller confirms the real-time residual quantity of the slurry of the first temporary storage tank and the third temporary storage tank; Or alternatively, the first and second heat exchangers may be, The controller confirms whether the second temporary storage tank conveys slurry to a tail coating head of the coating machine; when the second temporary storage tank does not convey the slurry to the tail coating head of the coating machine, the controller confirms the real-time residual quantity of the slurry of the second temporary storage tank.
8. The method of claim 6, wherein the controlling the transfer tank to transfer the slurry to the first temporary storage tank, the second temporary storage tank, or the third temporary storage tank comprises: When the real-time residual quantity of the slurry in the first temporary storage tank is smaller than that in the second temporary storage tank and that in the third temporary storage tank, the controller controls the transfer tank to convey the slurry to the first temporary storage tank until the ratio of the real-time residual quantity of the slurry in the first temporary storage tank to the calibration capacity of the first temporary storage tank is within a second preset range, and controls the transfer tank to convey the slurry to the second temporary storage tank until the ratio of the real-time residual quantity of the slurry in the second temporary storage tank to the calibration capacity of the second temporary storage tank is within the second preset range.
9. The method of claim 8, wherein after the ratio of the real-time remaining amount of the slurry in the second temporary storage tank to the calibrated capacity of the second temporary storage tank is within a second preset range, the method further comprises: The controller confirms the real-time allowance of the slurry of the first temporary storage tank; the controller confirms the real-time allowance of the slurry of the third temporary storage tank; when the real-time residual quantity of the slurry in the first temporary storage tank is smaller than that in the third temporary storage tank, the controller controls the transfer tank to convey the slurry in the first temporary storage tank until the ratio of the real-time residual quantity of the slurry in the first temporary storage tank to the calibrated capacity of the first temporary storage tank is within a second preset range; When the real-time residual quantity of the slurry in the first temporary storage tank is larger than that in the third temporary storage tank, the controller controls the transfer tank to convey the slurry in the third temporary storage tank until the ratio of the real-time residual quantity of the slurry in the third temporary storage tank to the calibrated capacity of the third temporary storage tank is within a second preset range.
10. The control method of the slurry transport system according to any one of claims 1 to 9, wherein the first detector is a laser liquid level sensor, the first detector being installed in the first agitation tank; The control method further includes: the controller controls the first detector to detect the liquid level in the first agitation tank before the controller confirms the real-time remaining amount of the slurry of the first agitation tank transmitted by the first detector.
11. The method of controlling a slurry transport system according to any one of claims 1 to 9, further comprising a diaphragm pump connected to the discharge valve of the first agitation tank, an outlet of the diaphragm pump being connected to the transfer tank, both the diaphragm pump and the discharge valve of the first agitation tank being communicatively connected to the controller; The control method further includes: The controller controls the first stirring tank to convey slurry to the transfer tank by controlling the discharge valve of the first stirring tank to be opened and controlling the diaphragm pump to be opened.

Description

Control method of slurry conveying system Technical Field The application relates to the technical field of battery manufacturing equipment, in particular to a control method of a slurry conveying system. Background The electrode slurry is stirred by uniformly mixing active substances, conductive carbon black, dispersing agents, binders, additives and the like in a stirring tank to form a solid-liquid suspension system with stable dispersion so as to meet the requirement of the subsequent coating process. To confirm whether the slurry in the stirred tank is empty for the preparation of the slurry for the next tank, it is often necessary to rely on personnel to open the tank for confirmation. This method of confirmation is inefficient and less accurate. In addition, the can opening operation exposes the slurry, which may remain, to air, affecting the quality of the slurry. Disclosure of Invention The application provides a control method of a slurry conveying system and the slurry conveying system, which can automatically empty slurry in a stirring tank to be put into the preparation of the slurry in the next tank, do not need to manually open the tank to confirm, improve the production efficiency and the accuracy, and are not easy to pollute the slurry in the stirring tank. The embodiment of the application provides a control method of a slurry conveying system, which is applied to a coating machine and comprises a first stirring tank, a transfer tank, a first detector, a second detector and a controller, wherein the first stirring tank is used for stirring the slurry; the first stirring tank is connected with the transfer tank, the first detector is arranged on the first stirring tank, the second detector is arranged on the transfer tank, and the controller is in communication connection with the first detector, the second detector and the first stirring tank; The control method comprises the following steps: The controller confirms the real-time residual quantity of the slurry of the first stirring tank transmitted by the first detector; The controller confirms the real-time allowance of the slurry of the transfer tank transmitted by the second detector; When the sum of the real-time residual quantity of the slurry of the transfer tank and the real-time residual quantity of the slurry of the first stirring tank is smaller than the calibrated capacity of the transfer tank, the controller controls the first stirring tank to convey the slurry until the ratio of the real-time residual quantity of the slurry of the first stirring tank to the calibrated capacity of the first stirring tank is within a first preset range. Through the control method, when the controller confirms that the sum of the real-time residual quantity of the slurry in the first stirring tank and the real-time residual quantity of the slurry in the transfer tank is still smaller than the calibrated capacity of the transfer tank, the controller can control the first stirring tank to convey the slurry to the transfer tank until the slurry can be emptied in the first stirring tank so as to be used for synthesizing new slurry. Therefore, the slurry allowance of the first stirring tank can be accurately judged without manually opening the tank to confirm whether the first stirring tank is completely discharged, the accuracy and the production efficiency are improved, and the slurry in the stirring tank is not easy to be polluted due to the opening of the tank. In one embodiment, the slurry delivery system further comprises a feed device connected to the first agitator tank and in communication with the controller; After the ratio of the real-time slurry allowance of the first stirring tank to the calibrated capacity of the first stirring tank is within the first preset range, the control method further comprises: the controller controls the feeding device to convey materials to the first stirring tank; the controller controls the first stirring tank to stir so as to synthesize new slurry. By the control method, after the first stirring tank is confirmed to be completely discharged, the controller can control the feeding device to convey materials to the first stirring tank and control the first stirring tank to stir so as to synthesize new slurry. Thus, the slurry in the transfer tank can be ensured to be supplied, the slurry can be prepared and conveyed to realize automatic circulation, and the production efficiency is improved. In one embodiment, the slurry delivery system further comprises a second agitator tank, the second agitator tank being coupled to the transfer tank, the second agitator tank being communicatively coupled to the controller; After the ratio of the real-time slurry allowance of the first stirring tank to the calibrated capacity of the first stirring tank is within the first preset range, the control method further comprises: When the real-time residual quantity of the slurry of the transfer tank is smaller than the calibra