Vehicle Battery Storage Partitioning for Grid Energy Management
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Solution Overview
Problem
Vehicles equipped with electric batteries lack control over their state of charge when used as mobile power storage devices, leading to potential insufficient energy for travel due to grid demands, requiring lengthy recharging.
Innovation Solution
A device with an energy management module that partitions the vehicle battery's storage capacity into user-defined segments, allowing independent charging and discharging for different users, including the vehicle owner and electricity providers, enabling flexible energy allocation and control.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the vehicle battery is used as mobile power storage to buffer power fluctuations in the power grid, then the power grid stability is improved, but the vehicle owner loses control over the state of charge of the battery
Solution Approach 1:
The patent segments the battery storage capacity into multiple virtual storage units, each assigned to different users (vehicle owner and electricity provider). This segmentation allows independent control over different portions of the battery capacity, resolving the contradiction by enabling both grid buffering and owner control through separate virtual accounts with defined rights and limits.
2Reliability
If the battery is discharged to supply electricity to the power grid during high demand, then the power grid fluctuation is compensated, but the remaining energy may be insufficient for the vehicle owner's travel needs
Solution Approach 1:
The patent establishes preliminary agreements between the vehicle owner and electricity provider that define minimum state of charge thresholds and energy allocation rules before charging/discharging operations begin. This preliminary action ensures that the vehicle owner's travel energy needs are protected in advance, preventing insufficient energy for travel while still allowing grid support operations.
3Loss of energy
If the vehicle battery is discharged to feed electricity back to the grid, then excess grid energy is buffered, but the driver must wait for recharging which consumes time
Solution Approach 1:
The patent implements dynamic energy management where the virtual storage units can be flexibly charged and discharged based on real-time conditions. The system dynamically adjusts charging/discharging operations, allowing the vehicle owner to prioritize their own energy needs and control when grid buffering occurs, thereby reducing unnecessary waiting time while still enabling energy buffering when convenient.
Data Source
AI summary
The invention relates to a device for storing electrical energy in a vehicle (1), comprising at least one vehicle battery (11), which can be connected to an electrical power network (3) by means of a vehicle charging interface (6) of the vehicle (1) and which has a storage capacity for storing electrical energy, wherein the storage capacity of the vehicle battery (11) is partitioned for different users.