Battery Electrode Load Opening Clean Room for Contamination Blocking
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Solution Overview
Problem
Existing battery electrode manufacturing devices face contamination risks due to extraneous materials entering the chamber during the introduction of current collectors, as they are not designed to prevent external materials from entering.
Innovation Solution
A battery electrode manufacturing device with a chamber maintained at sub-atmospheric pressure and a clean room structure that pressurizes the load opening area above atmospheric pressure, using clean pressurized air to prevent external materials from entering the chamber.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If a load opening is provided to introduce the current collector into the chamber, then the base film can be conveyed into the chamber for manufacturing, but extraneous materials may enter the chamber causing contamination
Solution Approach 1:
A clean room section is introduced as an intermediary space between the external environment and the chamber. This intermediate zone maintains a controlled atmosphere that prevents extraneous materials from entering the chamber while still allowing the base film to be conveyed through the load opening. The clean room section acts as a buffer that mediates between the need for material access and the need for contamination prevention.
Solution Approach 2:
The clean room section maintains a controlled atmosphere that is substantially free of extraneous materials. By creating an inert or clean environment in the load opening region, the system prevents contamination while allowing necessary operations to proceed. This controlled atmosphere serves as a protective barrier against harmful external factors.
2Object-affected harmful factors
If the chamber is maintained at sub-atmospheric pressure, then contamination can be reduced, but the load opening area may become a pathway for extraneous material entry
Solution Approach 1:
The system is divided into distinct pressure zones: the chamber maintained at sub-atmospheric pressure and the clean room section at atmospheric or super-atmospheric pressure. This segmentation allows each zone to serve its specific function - the chamber provides contamination reduction through vacuum, while the clean room section prevents extraneous material entry through positive pressure, resolving the contradiction between these two requirements.
Solution Approach 2:
The clean room section serves as an intermediary pressure zone that transitions between the external atmospheric environment and the sub-atmospheric chamber. This intermediate zone prevents the direct interaction between external extraneous materials and the vacuum chamber, allowing the chamber to maintain its contamination-reducing vacuum while still enabling material conveyance without contamination.
3Object-affected harmful factors
If a clean room structure is added to prevent contamination, then extraneous materials are blocked, but the device complexity increases
Solution Approach 1:
The clean room section performs multiple functions simultaneously: it blocks extraneous materials from entering the chamber, provides a controlled atmosphere for base film conveyance, and serves as a pressure transition zone. By consolidating these functions into a single structural element, the design achieves effective contamination prevention without proportionally increasing overall device complexity.
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
This configuration effectively prevents extraneous materials from entering the chamber, ensuring a clean environment for electrode manufacturing and improving the uniformity and stability of the electrode active material layer.
Implementation Method 1
the clean room section is provided in the load opening side outside of the chamber, wherein the internal of the space is pressurized above atmospheric pressure, wherein the base film is conveyed toward the load opening in the space, and wherein the clean room section supplies clean pressurized air toward the load opening
Data Source
AI summary
A battery electrode manufacturing device (100) comprises: a chamber (110) whose inside (IN) is decompressed below atmospheric pressure, wherein a base film (31A) is conveyed to the inside (IN) of the chamber (110) via a load opening (112); and a clean room section (150) that provides a space, wherein the clean room section (150) is provided in the load opening (112) side outside (OU) of the chamber (110), wherein the internal (INa) of the space is pressurized above atmospheric pressure, wherein the base film (31A) is conveyed toward the load opening (112) in the space, and wherein the clean room section (150) supplies clean pressurized air (a1) toward the load opening (112).