Mobile EV Charging Buffer for Space-Limited Urban Stations
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Solution Overview
Problem
Existing charging systems for electric drive vehicles are inefficient due to the need for large stationary batteries, which occupy space, pose safety risks, and require additional infrastructure. Additionally, these systems do not effectively manage peak and troughs in the fixed electricity network.
Innovation Solution
A charging system that utilizes mobile charging devices with battery packs to store energy from the fixed electricity network, which can then be transferred back to the network during peak demand. This system eliminates the need for large stationary batteries, allowing for more compact and safer infrastructure.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a stationary battery is used to store electrical energy in the stationary charging station, then the system can provide energy buffering capability, but the charging station becomes large in size and requires a great deal of space
Solution Approach 1:
The stationary battery is divided into multiple mobile charging devices, each with its own battery pack. These mobile devices can be distributed throughout the urban environment, transforming a single large stationary energy storage system into multiple smaller mobile units that collectively provide the same energy buffering capability without requiring centralized space.
Solution Approach 2:
The energy storage function is extracted from the stationary charging station and transferred to mobile charging devices. The stationary station retains only the charging infrastructure and control systems, while the battery packs are relocated to mobile units that can move between charging locations and vehicle destinations.
2Reliability
If a stationary battery is used for intermediate storage of electrical energy, then the system can manage peak and trough demands, but the risk of fire and other hazards increases
Solution Approach 1:
One large stationary battery is segmented into multiple smaller battery packs distributed across mobile charging devices. This segmentation reduces the fire risk associated with any single large battery while maintaining the overall energy buffering capability of the system.
Solution Approach 2:
Mobile charging devices autonomously manage their own battery packs, charging at stationary stations when energy is abundant and delivering energy to vehicles or the grid when needed. This self-service capability eliminates the need for a centralized stationary battery while maintaining peak and trough demand management.
3Quantity of substance
If a stationary battery is installed in the charging station, then the system can store electrical energy, but the stationary charging station becomes large and complex
Solution Approach 1:
The battery storage function is extracted from the stationary charging station and assigned to mobile charging devices. The stationary station is simplified to provide only charging infrastructure, control systems, and communication interfaces, while mobile units handle energy storage and delivery.
Solution Approach 2:
Mobile charging devices serve multiple functions: they act as energy storage units, mobile charging stations for vehicles, and distributed energy resources for the electrical grid. This multi-functionality eliminates the need for dedicated stationary battery infrastructure while providing comprehensive energy management capabilities.
4Area of stationary object
If mobile charging devices are used instead of stationary batteries, then the system becomes more compact and safer, but the means for moving devices between locations is required
Solution Approach 1:
Mobile charging devices are equipped with autonomous navigation and self-propulsion capabilities, allowing them to move independently between stationary charging stations, vehicle locations, and grid connection points. This self-service mobility eliminates the need for external transport infrastructure while maintaining system compactness.
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
The system enhances the feasibility of urban implementation by reducing infrastructure needs, improving safety, and effectively managing electricity network capacity by acting as a buffer for peak and trough demands.
Implementation Method 1
each mobile charging device comprising: i. battery pack
Data Source
AI summary
Described is a system for charging a battery of an electric drive vehicle at variable charging locations, which battery is designed to provide the energy for the electric drive of the vehicle, comprising a stationary charging station connected to a fixed electricity network, one or more mobile charging devices, which mobile charging device comprises a battery pack; means of connection to the stationary charging station for establishing an electrical connection between the battery pack and the fixed electricity network; driving means to drive the mobile device, such that the mobile device can move from the stationary charging station to a number of charging locations remote from the charging station which charging locations are arranged for positioning the electric drive vehicle, and back; and means for delivering electrical energy from the battery pack to the vehicle battery, the system being designed to deliver electrical energy from the one or more mobile charging devices connected to the stationary charging station back to the electricity network in the event of decreased capacity of the fixed electricity network. It also describes a method for charging a battery of one or more electric drive vehicles at variable charging locations, which battery is intended to provide the energy for the electric drive of the vehicle, which charging locations are arranged for positioning the electric drive vehicle, under application of the system. A mobile charging device and a connection element between a mobile charging device and the vehicle to be charged are also described.