Pre-warning device and pre-warning method for residual amount of raw materials in crucible

Abstract

The invention discloses a pre-warning device for residual amount of raw materials in a crucible. The pre-warning device comprises a crucible, an outer shell, a detection mechanism, a permanent magnet,an electromagnet, an adjustable power supply and a controller. The crucible is arranged in the outer shell, the electromagnet and the permanent magnet are arranged oppositely to form magnetic fieldsopposite in direction, and one of the permanent magnet or the electromagnet is arranged in the outer shell to be connected to the bottom of the crucible while the other one of the permanent magnet orthe electromagnet is arranged below the outer shell; the adjustable power supply is electrically connected to the electromagnet for electrifying the electromagnet; the detection mechanism is arrangedin the sealed outer shell for detecting position change of the crucible, and the controller is connected to the detection mechanism and the adjustable power supply for determining whether the residualamount of the raw materials in the crucible meets a first preset threshold value or not according to an electrifying current value of the electromagnet when the position of the crucible changes. Thepre-warning device gives out early warning when the residual amount of the raw materials in the crucible meets the first preset threshold value.

Description

technical field [0001] The invention relates to the technical field of battery coating, in particular to an early warning device and an early warning method for remaining raw materials in a crucible. Background technique [0002] During the production and operation of the coating equipment, the weight of the raw materials in the crucible decreases with the continuous consumption until the total consumption is finally close to the weight of the crucible. When the remaining amount of raw materials in the crucible is too small, it may affect the coating effect of the product. Therefore, it is necessary to monitor the remaining amount of raw materials in the crucible in real time, and give a timely warning when the remaining amount of raw materials in the crucible is too small. [0003] At present, the following two schemes are usually used to detect the remaining amount of raw materials in the crucible: [0004] Method 1: Take out the crucible directly and check the consumptio...

AI Technical Summary

Problems solved by technology

[0004] Method 1: Take out the crucible directly and check the consumption of raw materials in the crucible. This has the following disadvantages: 1. It needs to be shut down to open the cover, causing production to wait, which is time-consuming and labor-intensive; 2. Destruction of the debugged production inside the sealing equipment Environment, after the equipment is restarted, the production process needs to be re-adjusted, which wastes the debugging materials

This method has the following defects: 1. It is impossible to accurately locate the type of raw material and the location of the source device; 2. There is a time lag. At this time, a large number of substandard products have appeared, resulting in waste of cost

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