Vehicle Expansion Module With Removable Battery and DC Conversion
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Solution Overview
Problem
In densely populated areas, the limited capacity of electrical energy stores in vehicles restricts the range of electric vehicles, and the insufficient number of charging stations poses a challenge for efficient charging.
Innovation Solution
An expansion module for vehicles with a receiving area, featuring a module interface for mechanical and electrical connections, a storage module, and a DC voltage converter, allowing flexible expansion of the onboard electrical system's capacity and charging capabilities, including the use of AC current sources or sinks.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Duration of action of moving object
If the capacity of the electrical energy store is increased to extend vehicle range, then the range is improved, but the vehicle weight and cost increase
Solution Approach 1:
The electrical energy storage system is divided into multiple modular energy stores (primary energy store in the vehicle and removable expansion modules). Each module can be independently configured and combined, allowing the system to provide extended range through additional modules without permanently increasing the base vehicle weight. Users can add modules only when extended range is needed.
Solution Approach 2:
The energy storage system is made dynamically configurable through removable and replaceable expansion modules. The system can adapt its total capacity based on operational needs, allowing users to adjust the energy storage configuration rather than being locked into a fixed, heavy battery configuration for maximum range.
2Ease of operation
If charging stations are increased in densely populated areas to enable efficient charging, then charging accessibility is improved, but infrastructure cost and complexity increase
Solution Approach 1:
The expansion modules are designed to enable users to perform their own charging operations without requiring specialized charging station infrastructure. The modules can be charged using standard AC power sources (including household outlets) and then connected to the vehicle, allowing users to charge their vehicles anywhere with electrical access, thereby eliminating the need for extensive specialized charging station networks.
Solution Approach 2:
The expansion modules serve multiple functions: they can be charged from various AC power sources (including standard household outlets), stored in the vehicle when not in use, and used to extend range for multiple vehicles. This multi-functionality reduces the need for dedicated charging infrastructure, as the same modules can serve different vehicles and locations.
3Adaptability or versatility
If expansion modules are made removable and replaceable to enable flexible charging, then charging flexibility is improved, but the mechanical connection reliability must be maintained
Solution Approach 1:
The connection system is segmented into standardized, modular interfaces with distinct functional elements (mechanical coupling, electrical contacts, and locking mechanisms). Each interface element is independently optimized for its specific function, allowing the module to be easily removed and replaced while maintaining reliable connections during operation. The modular design ensures that each component can be manufactured with high precision for consistent reliability.
Solution Approach 2:
The mechanical connection interface includes built-in positioning features, guide elements, and locking mechanisms that ensure proper alignment and secure engagement before the module is fully inserted. These features prevent misalignment or improper connection, ensuring reliable electrical and mechanical coupling from the outset, thereby maintaining connection reliability despite the removable nature of the modules.
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
Enables efficient and flexible expansion of the vehicle's electrical energy storage capacity, increasing the vehicle's range and reducing dependence on charging stations, particularly in urban environments, by providing additional energy storage and permitting flexible charging processes.
Implementation Method 1
The expansion module comprises a storage module by way of a functional element, which is designed to store electrical energy
Implementation Method 2
The expansion module can comprise a DC voltage converter, which is configured to convert electrical energy between a voltage level of the storage module and a voltage level of the onboard electrical system of the vehicle
Data Source
AI summary
An expansion module for a vehicle includes an onboard electrical system. The onboard electrical system has an electrical energy store and a receiving area for the expansion module. The expansion module includes a module interface and a functional unit. The module interface is configured to form a mechanical connection to a receiving interface of identical design of the receiving area and one or more electrically conductive collections between the expansion module and the receiving area. The functional unit is configured to provide an expansion function for the onboard electrical system of the vehicle, via the one or more electrically conductive connections.