Powder Feeding Valve and Pressure Control for Accurate Transfer
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Solution Overview
Problem
Existing powder transfer systems for secondary batteries lack accuracy and efficiency in weighing and transferring powder, necessitating a device and method that can vary transfer modes based on the amount of powder transferred.
Innovation Solution
A powder feeding device with a container, hopper, chamber unit, and pipe assembly, equipped with valve assemblies and pressure sensors, allows for varying transfer modes by controlling atmospheric pressure and gas flow to accurately and quickly transfer powder, using a container valve, hopper valve, and chamber valve to manage powder flow and pressure differentials.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If a conventional powder transfer system is used, then the structure is simple, but the weighing accuracy and transfer efficiency are insufficient
Solution Approach 1:
The system is divided into multiple independent chambers (first chamber with first powder, second chamber with second powder, third chamber with third powder) that can operate separately or in combination. Each chamber has its own valve assembly and transfer path, allowing independent weighing and transfer operations that improve accuracy without requiring a completely complex centralized system.
Solution Approach 2:
The valve assembly dynamically switches between different transfer modes (first transfer mode for single chamber, second transfer mode for multiple chambers) based on the amount of powder to be transferred. This dynamic adaptation allows the system to optimize between simplicity and precision depending on operational requirements.
2Productivity
If a single transfer mode is used, then the operation is simple, but the transfer efficiency and accuracy for varying powder amounts are insufficient
Solution Approach 1:
The system implements dynamic mode switching between first transfer mode (single chamber operation) and second transfer mode (multi-chamber parallel operation) based on powder amount requirements. The control unit automatically selects the appropriate mode, enabling the system to adapt its complexity to match the operational needs and maximize transfer efficiency.
Solution Approach 2:
The system changes operational parameters (which chambers are active, which valves are open/closed) based on the powder amount to be transferred. For small amounts, only one chamber operates; for large amounts, multiple chambers operate in parallel, thereby optimizing transfer efficiency without permanently increasing system complexity.
3Quantity of substance
If multiple chambers are used for large powder amounts, then the transfer capacity increases, but the control complexity increases
Solution Approach 1:
The control unit automatically manages the complexity of coordinating multiple chambers and valves. When operating in second transfer mode, the system self-coordinates the opening/closing sequences of multiple valves and the operation timing of multiple chambers without requiring manual intervention, thereby maintaining ease of operation while increasing transfer capacity.
Solution Approach 2:
The system uses weight sensors to provide feedback on powder amounts and transfer progress. This feedback enables the control unit to automatically adjust valve operations and chamber activation sequences, simplifying the control of multiple chambers by letting the system self-regulate based on real-time measurements rather than requiring complex pre-programming or manual coordination.
4Productivity
If rapid transfer is prioritized, then the productivity increases, but the weighing accuracy may deteriorate
Solution Approach 1:
By dividing the total powder transfer into separate chamber operations, the system can perform weighing and transfer of each chamber's powder amount independently and rapidly. The segmentation allows parallel processing of multiple chambers in second transfer mode, achieving both high speed and accuracy by transferring smaller amounts from each chamber precisely rather than attempting one large slow transfer.
Solution Approach 2:
The system dynamically adjusts the transfer strategy based on powder amount: for small amounts, it uses first transfer mode with careful single-chamber weighing for accuracy; for large amounts, it switches to second transfer mode with parallel multi-chamber operation for speed, thereby optimizing the speed-accuracy tradeoff dynamically rather than being fixed.
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 device enables precise and efficient transfer of powder by adjusting transfer modes, enhancing process efficiency and reducing air pollution through controlled atmospheric pressure and gas flow, suitable for eco-friendly vehicles.
Implementation Method 1
transferring the powder stored in the container to one of a hopper and a chamber unit when the measured internal pressure is less than the reference chamber internal pressure
Implementation Method 2
a chamber blower spraying a gas into the chamber filter
Data Source
AI summary
Powder feeding device and powder transfer method are disclosed. The powder feeding device includes a container including a container body forming a storage space therein; a hopper including a hopper body forming an accommodation space therein; a chamber unit including a chamber housing forming a hollow portion and coupled to the hopper body; a pipe assembly including a container pipe unit which extends from the container and is opened or closed, a hopper pipe unit which is branched from the container pipe unit, is connected to the hopper body, and is opened or closed, and a chamber pipe unit which is branched from the container pipe unit, is connected to the chamber housing, and is opened or closed; and a valve assembly including a coupling valve which is coupled to at least one of the chamber housing and the hopper body and connects/disconnects the storage space to/from the hollow portion.