Battery Electrolyte Permeation Layout for Shorter Fill Time
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Solution Overview
Problem
The existing manufacturing methods for batteries result in long permeation times for electrolytic solution due to the long permeation distance when the unsealed portion is positioned in a side where the collector terminals are not placed, leading to inefficient production.
Innovation Solution
The method involves preparing an intermediate member with a specific arrangement state for electrolytic solution injection and permeation, where the collector terminals are placed on long sides, and rotating the member to reduce permeation distance by positioning the unsealed portion on short sides, followed by forming a gas pocket to collect generated gas and sealing the unsealed portion.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If the unsealed portion is provided in a short side of the power generation element, then the electrolytic solution can be injected easily, but the permeation distance becomes long and the permeation time increases
Solution Approach 1:
The patent applies dynamics by changing the orientation of the power generation element during the permeation process. The element is rotated from an initial state where short sides face vertically to a state where long sides face vertically, dynamically adjusting the permeation path length during manufacturing to reduce overall permeation time
2Loss of time
If the unsealed portion is provided in a long side of the power generation element, then the permeation distance is short and permeation time is reduced, but the collector terminals cannot be properly positioned on long sides
Solution Approach 1:
The manufacturing process is segmented into distinct stages with different orientations. The power generation element is prepared in one orientation for terminal positioning, then rotated to a different orientation for the permeation process, allowing each operation to optimize for its specific requirement
Solution Approach 2:
The system dynamically changes the orientation of the power generation element between manufacturing steps, transitioning from a configuration optimized for terminal positioning to one optimized for rapid electrolytic solution permeation
3Loss of time
If the intermediate member is placed with long sides on vertically lower side during permeation, then the permeation distance increases, but this arrangement state A is required to reduce permeation time
Solution Approach 1:
The patent inverts the conventional understanding by placing the unsealed portion at the upper end rather than the lower end during permeation. This counterintuitive arrangement, combined with the specific orientation of long sides facing vertically, creates a permeation path that is shorter than expected and reduces permeation time
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 approach significantly reduces the permeation time of the electrolytic solution by shortening the permeation distance, thereby enhancing production efficiency.
Implementation Method 1
a permeation step of causing the injected electrolytic solution to permeate the intermediate member
Data Source
AI summary
A manufacturing method of a battery includes: an injection step of injecting the electrolytic solution into the intermediate member via an unsealed portion; and a permeation step of causing the electrolytic solution to permeate the intermediate member. The electrode body includes a power generation element and a first collector terminal and a second collector terminal. The power generation element has a first side and a second side corresponding to long sides in the rectangular shape of the power generation element, and a third side and a fourth side corresponding to short sides in the rectangular shape of the power generation element. The first collector terminal and the second collector terminal are placed on the first side and on the second side, respectively. In the permeation step, the intermediate member is placed such that the first side is placed on a vertically lower side as a first arrangement state.