Battery Active Material Separation by Submerged Liquid Jet
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Solution Overview
Problem
Existing methods for separating active materials from battery electrodes often cause significant damage and scattering, leading to reduced recovery efficiency.
Innovation Solution
An active material separation device with a container, base member, and nozzle configuration that injects a liquid below the battery member's surface, allowing controlled collision energy and submersion, combined with movable components and sensors for precise height adjustments, to minimize damage and scattering.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If liquid is injected at high speed to separate active material from battery member, then separation efficiency is improved, but damage to active material increases
Solution Approach 1:
The device performs preliminary actions by submerging the battery member in liquid before jet injection, and by pre-positioning the collection filter to receive separated active material. This preliminary submersion and positioning reduces the impact of high-speed jet on the active material, allowing efficient separation while minimizing damage.
Solution Approach 2:
The liquid serves as an intermediary medium between the jet and the active material. By injecting the jet into the liquid rather than directly at the active material, the liquid absorbs and distributes the impact energy, reducing damage to the active material while maintaining separation efficiency.
2Speed
If jet collision energy is increased to improve separation, then separation speed is improved, but scattering of active material increases
Solution Approach 1:
The liquid acts as an intermediary that absorbs the collision energy from the jet, converting it into fluid motion rather than direct impact on the active material. This allows high separation speed while preventing scattering, as the liquid carries the separated active material gently to the collection filter.
Solution Approach 2:
The device utilizes hydraulic principles by injecting liquid at high speed and using the liquid flow to transport the separated active material. The liquid flow pattern and pressure distribution control the separation process, enabling high speed separation without scattering through proper fluid dynamics management.
3Productivity
If liquid is injected directly at battery member surface, then separation efficiency is improved, but active material scattering increases
Solution Approach 1:
The device submerges the battery member in liquid before jet injection, creating a liquid environment that captures and contains the active material during separation. This preliminary submersion prevents scattering while maintaining separation efficiency, as the active material is continuously supported by the liquid medium.
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 effectively separates active materials with reduced damage and scattering, enhancing recovery efficiency and processing speed.
Implementation Method 1
a nozzle that is disposed above the container and that is configured to inject a liquid with respect to the battery member
Implementation Method 2
a base member that is disposed inside of the container and that is configured to support the battery member; the base member may be movable in a vertical direction
Data Source
AI summary
An active material separation device according to an embodiment of the present invention is an active material separation device configured to separate an active material from a battery member, which includes a container, a base member disposed in the container and configured to support the battery member, and a nozzle disposed above the container and configured to inject a liquid with respect to the battery member, and the nozzle injects the liquid in a state in which a position of an upper surface of the battery member is lower than a position of a liquid surface of the liquid.