Negative Electrode Slurry Transfer Filtration Under Pressure Feedback
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Solution Overview
Problem
The quality of the negative electrode slurry for secondary batteries deteriorates during transfer due to filter clogging, leading to increased pipe pressure and difficulties in continuous production.
Innovation Solution
A slurry transfer device comprising a tank, a pneumatically driven pump with diaphragms, a flow rate adjustment part, a filter, a pressure sensor, and a control part that adjusts the air flow rate based on pressure differences to maintain optimal air pressure in the pump chamber, preventing filter clogging and ensuring continuous transfer.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a filter is disposed on the transfer line to transfer negative electrode slurry, then the slurry can be filtered, but the filter becomes clogged causing pipe pressure increase and slurry quality deterioration
Solution Approach 1:
The pump system dynamically adjusts air supply flow rate based on real-time pressure feedback from the transfer line. When filter clogging is detected through pressure increase, the system automatically increases air supply to maintain pumping effectiveness, preventing complete filter blockage and ensuring continuous operation without manual intervention
Solution Approach 2:
A pressure sensor continuously monitors the transfer line pressure and feeds this information back to the control unit. The control unit compares the measured pressure with reference values and automatically adjusts the air supply flow rate accordingly, creating a closed-loop control system that prevents filter clogging from causing production interruptions
2Extent of automation
If a pneumatically driven pump is used to transfer slurry, then the transfer process can be automated, but filter clogging occurs due to insufficient air pressure control
Solution Approach 1:
The control unit receives real-time pressure feedback from the pressure sensor and automatically adjusts the air supply flow rate to maintain optimal pumping conditions. This automated feedback control prevents filter clogging by ensuring sufficient air pressure is always supplied to the pump chamber, eliminating the need for manual monitoring and adjustment
Solution Approach 2:
The system performs self-adjustment of air supply parameters based on its own operational state monitoring. When the pressure sensor detects conditions indicating potential filter clogging, the control unit automatically increases air supply flow rate without external intervention, enabling the system to self-correct and maintain reliable operation
3Device complexity
If air pressure in the pump chamber is not properly controlled, then the pump operation is simple, but the slurry quality deteriorates due to pulsation from filter clogging
Solution Approach 1:
The control unit continuously monitors transfer line pressure and uses this feedback to dynamically adjust air supply flow rate. This maintains stable air pressure in the pump chamber, preventing the pulsation that would otherwise occur during filter clogging and ensuring consistent slurry quality throughout operation
Solution Approach 2:
The system dynamically changes the air supply flow rate parameter in response to pressure conditions. By increasing air supply when pressure increases (indicating filter clogging), the system maintains optimal pumping parameters that prevent slurry quality deterioration while adapting to changing operational conditions
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The solution effectively prevents slurry quality deterioration during transfer and extends the filter replacement cycle, ensuring continuous and high-quality production of negative electrode slurry for secondary batteries.
Implementation Method 1
diaphragms disposed to partition the pump chambers and the air chamber and provided to adjust the volume of the pump chambers
Implementation Method 2
a phenomenon, in which the filter is clogged, occurs. When the filter is clogged, the pipe pressure on the transfer line increases
Implementation Method 3
a pressure sensor, which is located between the pump and the filter, for measuring the pressure of the slurry during transfer
Implementation Method 4
a flow rate adjustment part, which is connected to the pump, for adjusting a flow rate of the air supplied to the air chamber
Data Source
AI summary
The present invention relates to a slurry transfer device, and a slurry transfer method using the same, which relates to, particularly, a negative electrode slurry transfer device for a secondary battery, and a method of transferring a negative electrode slurry for a secondary battery using the same. According to a slurry transfer device related to one example of the present invention, and a slurry transfer method using the same, it is possible to prevent the quality of the slurry from deteriorating during transfer, and to increase the filter replacement cycle.