Battery Lower Plastic Assembly for Uniform Electrolyte Reflux
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Energy-storage devices experience uneven electrolyte distribution over time due to differential decomposition rates, leading to inefficiencies and potential gas accumulation, which affects their performance and longevity.
Innovation Solution
The energy-storage device incorporates a lower plastic assembly with strategically designed first and second distribution channels within the reflux tank, ensuring greater fluid flow capacity to the middle region where electrolyte decomposition is higher, thereby maintaining even electrolyte distribution and preventing gas accumulation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Duration of action of moving object
If the energy-storage device is charged and discharged cyclically or stored for a long time, then the electrochemical reaction converts chemical energy into electrical energy, but the electrolyte gradually decomposes and produces gas, leading to uneven electrolyte distribution
Solution Approach 1:
The distribution member is divided into multiple channels (first distribution channel and second distribution channel) with different fluid flow capacities. This segmentation allows differential electrolyte distribution to different regions of the electrode assembly, compensating for the uneven decomposition rates and maintaining uniform electrolyte distribution over time.
Solution Approach 2:
Different channels are designed with different fluid flow capacities to match the local decomposition characteristics of the electrode assembly. The first distribution channel has greater fluid flow capacity to supply regions with higher decomposition rates, while the second distribution channel supplies regions with lower decomposition rates, achieving localized quality optimization.
2Power
If the electrolyte decomposes and produces gas during cyclic charging and discharging, then electrical energy is generated, but gas accumulation occurs affecting device performance
Solution Approach 1:
The distribution member acts as an intermediary structure that not only distributes electrolyte but also provides pathways for gas to escape. The multiple channels with different fluid flow capacities allow gas generated during electrochemical reactions to be vented efficiently, preventing gas accumulation while maintaining power density.
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 solution ensures even electrolyte distribution and prevents gas accumulation, enhancing the performance and longevity of the energy-storage device by optimizing fluid flow and distribution within the device.
Implementation Method 1
Each of the distribution members is provided with a reflux tank in communication with the accommodating cavity, and the reflux tank is configured to collect fluid flowing out from the accommodating cavity and distribute the fluid into the accommodating cavity to immerse the electrode assembly
Implementation Method 2
Each reflux tank defines a first distribution channel and a second distribution channel in a length direction of the lower plastic assembly, the first distribution channel is located between the second distribution channel and a central axis of the lower plastic assembly, and fluid flow capacity of the first distribution channel is greater than fluid flow capacity of the second distribution channel
Implementation Method 3
An electrochemical reaction can occur between the electrode assembly and the electrolyte to covert chemical energy into electrical energy, so that the energy-storage device can output electric energy
Data Source
Figure 1
Figure 2
Figure 3~4
AI summary
The present disclosure provides an energy-storage device and an electricity-consumption device. The energy-storage device includes a housing, an electrode assembly, an end cap assembly, and a lower plastic assembly. The housing has an opening and is provided with an accommodating cavity in communication with the opening, and the accommodating cavity is configured to store fluid and accommodate the electrode assembly. The end cap assembly covers the opening. The lower plastic assembly includes a cover plate and two distribution members that are arranged in a width direction of the lower plastic assembly and connected to the cover plate. Each of the distribution members is provided with a reflux tank, and the reflux tank is configured to collect fluid flowing out from the accommodating cavity and distribute fluid into the accommodating cavity. Each reflux tank defines a first distribution channel and a second distribution channel in a length direction of the lower plastic assembly. The first distribution channel is located between the second distribution channel and a central axis of the lower plastic assembly, and fluid flow capacity of the first distribution channel is greater than fluid flow capacity of the second distribution channel, so that electrolyte flowing back to a region of the accommodating cavity close to the central axis is more than electrolyte flowing back to an edge region of the accommodating cavity in the length direction of the lower plastic assembly.