Modular Plug-In Battery Pack for Quick Cell Swapping and Range-Weight Balance
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Solution Overview
Problem
The existing battery pack replacement methods for electric vehicles are inefficient, and there is a contradiction between driving range and load weight in both short-distance and long-distance driving scenarios, affecting user experience and increasing costs.
Innovation Solution
A power freely-configurable plug-in battery pack system with an installation box, cell modules, and a controller, featuring cell channels and quick-replacement connectors, allowing for adaptive and quick replacement of cell modules based on power thresholds, enabling flexible battery pack configuration to match driving needs while minimizing weight.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Duration of action of moving object
If battery pack capacity is increased to extend driving range, then driving range is improved, but vehicle weight increases
Solution Approach 1:
The battery pack is divided into multiple independent cell modules that can be individually removed or added. This segmentation allows the battery capacity to be adjusted in discrete units, enabling the vehicle to carry only the necessary battery capacity for each specific trip, thus extending driving range when needed while reducing weight during short-distance commuting.
Solution Approach 2:
The battery pack configuration is made dynamic through the quick-replacement mechanism. Users can adaptively adjust the battery capacity by replacing cell modules based on real-time driving needs, converting a static weight problem into a dynamic solution where weight and capacity are optimized for each specific usage scenario.
2Productivity
If battery replacement method is simplified for quick swapping, then replacement efficiency is improved, but replacement cost increases
Solution Approach 1:
The battery replacement system is segmented into standardized cell modules with uniform interfaces and quick-replacement connectors. This standardization enables rapid swapping operations to be performed efficiently, while the modular design allows for cost-effective manufacturing and maintenance compared to replacing entire battery packs.
Solution Approach 2:
The cell modules are extracted as independent replaceable units from the battery pack system. This extraction allows the quick-replacement mechanism to focus only on the essential swapping function, improving replacement efficiency while reducing overall system complexity and cost compared to integrated battery pack designs.
3Device complexity
If fixed battery pack configuration is used, then device complexity is reduced, but adaptability to different driving scenarios deteriorates
Solution Approach 1:
The battery pack is segmented into standardized cell modules that can be independently configured. This segmentation provides a simple base configuration while enabling versatile adaptation through modular assembly, allowing users to adjust battery capacity for different driving scenarios without increasing overall system complexity.
Solution Approach 2:
The standardized cell modules and quick-replacement connectors provide universal interfaces that work across different configurations and driving scenarios. This universality enables a single modular system to serve multiple functions - from short-distance commuting to long-distance travel - without requiring different battery pack designs.
Data Source
AI summary
Disclosed are a power freely-configurable plug-in battery pack, a vehicle, and a battery replacement method. The battery pack includes an installation box provided with a plurality of cell channels; a cell module pluggably installed in the cell channel, where a cell quick-replacement connector is provided between the cell module and the cell channel; and a controller, where the controller is electrically connected to the cell module through the cell quick-replacement connector and controls an operation of the cell module. The present application provides the cell channel in the battery pack and provides the cell quick-replacement connector, so that the cell module can be quickly plugged and unplugged relative to the cell channel, realizing the quick replacement of the cell module and improving the replacing efficiency of the battery pack.