Battery Cell Current Collector for Faster Electrolyte Infiltration
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Solution Overview
Problem
The difficulty of electrolytic solution infiltrating the electrode assembly in battery cells is significant due to the limited flow capacity of existing current collection components, which impedes efficient injection and distribution within the electrode assembly.
Innovation Solution
Incorporating a current collection component with a first center hole and a guide channel that guides the electrolytic solution into the electrode assembly, providing multiple pathways for infiltration through the guide channel and center hole, enhancing the flow capacity and distribution within the electrode assembly.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a conventional battery cell structure with a single continuous electrolyte is used, then the manufacturing process is simple, but the battery cannot be folded or bent without damaging the electrolyte and electrode connections
Solution Approach 1:
The electrolyte is divided into multiple separate segments (first electrolyte, second electrolyte, third electrolyte) positioned in different regions (first, second, third regions) rather than using a single continuous electrolyte. This segmentation allows the battery to be folded or bent at the boundaries between regions without damaging the electrolyte, as each segment remains intact in its own region.
Solution Approach 2:
The battery structure transitions from a traditional planar configuration to a three-dimensional folded configuration with multiple regions arranged in space. The electrolyte segments are positioned in different spatial regions, allowing the battery to achieve flexibility through spatial arrangement rather than remaining in a single flat plane.
2Adaptability or versatility
If the battery is designed to be foldable with multiple regions, then flexibility is achieved, but the manufacturing precision requirements increase due to complex electrode and electrolyte positioning
Solution Approach 1:
The battery is divided into multiple independent regions (first, second, third regions) with corresponding electrode and electrolyte segments. Each segment can be manufactured and positioned independently, allowing for modular assembly that reduces the overall precision requirements compared to manufacturing a single complex folded structure as one piece.
Solution Approach 2:
The electrodes and electrolytes are prepared and positioned in their respective regions before final assembly. The first electrode and first electrolyte are positioned in the first region, the second electrode and second electrolyte in the second region, and so on, allowing for pre-positioning and quality control before the complete battery assembly.
Data Source
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AI summary
The embodiment of the present application relates to the technical field of batteries. Provided are a battery cell, a battery, a power consumption apparatus, and a method and an apparatus for manufacturing the battery cell. The battery cell comprises a shell, an electrode assembly, an end cover and a current collecting member. The electrode assembly is accommodated in the shell, and the electrode assembly comprises a main body part and a first lug. The end cover covers an opening of the shell, and the end cover is provided with a liquid injection hole. The current collecting member is accommodated in the shell and located on the side of the end cover facing the main body part, and the current collecting member is configured to connect the first lug and the end cover so as to achieve electric connection between the end cover and the lug. The current collecting member is provided with a first center hole and a flow guide channel, the first center hole and the liquid injection hole are oppositely arranged, and the flow guide channel is configured to allow at least part of electrolyte entering the battery cell from the liquid injection hole to enter the main body part. The electrolyte entering the battery cell from the liquid injection hole can more easily permeate into the electrode assembly, thereby improving the liquid injection efficiency and improving the permeation effect of the electrolyte on the electrode assembly.