Control system of production line for lithium battery pole pieces

Abstract

The invention discloses a control system of a production line for lithium battery pole pieces. The control system comprises a PLC, a touch screen, a terminal, a tension controller, a servo amplifier, a vector frequency converter, a magnetic valve, a relay, a safety warning device, sensors and a key switch. The PLC is connected with the touch screen, the terminal, the tension controller, the servo amplifier, the vector frequency converter, the relay, the safety warning device, the sensors and the key switch; the PLC is connected with the magnetic valve through the relay; the sensors comprise the contact sensor, the tension sensor and the U-type sensor. With the PLC being a core, the control system complete production line taking-up and paying-off tension control, roller rotating speed control, roller gap control and deviation correction control with high real-time performance, high reliability and high precision through information interaction with the touch screen, the terminal, the tension controller, the servo amplifier, the vector frequency converter, the magnetic valve, the safety warning device, the sensors and the key switch, so that the stability of the control system is greatly improved.

Description

technical field [0001] The invention relates to the control field of a lithium battery pole piece production line, in particular to a control system for a lithium battery pole piece production line. Background technique [0002] At present, all countries in the world are focusing on the development of new energy vehicles. Most new energy vehicles are powered by electricity. The demand for batteries will increase day by day, and the requirements for battery quality will become more and more stringent. In the rolling process of lithium battery pole pieces, the quality of the pole piece directly determines the storage capacity of the battery. The thickness of the pole piece and whether the thickness is uniform is the key to determine the quality of the lithium battery pole piece. Therefore, in the lithium battery pole piece production line In the control system, the adjustment of the roll gap is extremely important. At the same time, in the entire control system, the stability...

AI Technical Summary

Problems solved by technology

[0003] In the control system of the traditional rolling mill, the adjustment of the roll gap is realized by controlling the stepper motor or other DC motors, so a feedback system is needed to realize the real-time monitoring of the roll gap, which makes the whole rolling mill complicated and among them The interference elements also increase accordingly, so it is difficult to achieve the expected effect, which affects the precision of the rolling mill, and because the feedback system is more complicated, the whole rolling mill becomes more unstable

In terms of communication protocols, the traditional rolling mill control system uses the transmission of analog quantities (such as voltage signals) to control each subsystem. The disadvantage of this is that the transmission of analog quantities is easily disturbed and unstable, making it difficult to control the accuracy of the system.

Moreover, in a system, a total CPU controls each subsystem through a specific protocol, so that each system passes through the CPU, which greatly increases the workload of the CPU, and in this way, errors are prone to occur when the CPU controls the entire subsystem. , and it is not easy to find errors and change errors

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