Peer-to-Peer RESS Discharge for Thermal Propagation Mitigation
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Solution Overview
Problem
Rechargeable energy storage systems (RESS) in electric vehicles are at risk of thermal propagation events or accelerated degradation, which can cause permanent damage to the vehicle and its surroundings, and existing power management systems do not effectively mitigate these risks without affecting the electrical grid.
Innovation Solution
A peer-to-peer energy transfer system that allows a host peer experiencing a RESS event to discharge power to one or more recipient peers through a peer communications network, ensuring zero net current passes through the electrical grid, thereby mitigating thermal propagation and degradation while maintaining grid stability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If power is shuttled from a RESS at high state of charge to mitigate thermal propagation risk, then safety is improved, but the electrical grid must handle additional current which increases grid load and potential instability
Solution Approach 1:
The patent introduces an intermediary peer-to-peer energy transfer system that mediates between the host peer with high RESS state of charge and recipient peers needing power. This intermediary system enables direct local energy transfer, eliminating the need for the electrical grid to handle the current, thus resolving the contradiction between safety improvement and grid load increase
Solution Approach 2:
The patent segments the electrical system into independent peer units, each with its own RESS and power management capabilities. This segmentation allows localized power transfer between peers without requiring centralized grid involvement for routine power balancing, thereby improving safety while maintaining grid stability
2Reliability
If existing power management systems shuttle power through the electrical grid to manage RESS events, then RESS safety is improved, but grid operation is affected and stability may be compromised
Solution Approach 1:
The patent introduces a peer-to-peer energy transfer intermediary that enables direct power transfer between local peers, serving as a mediator that bypasses the electrical grid for RESS event management. This resolves the contradiction by improving RESS safety through active power management while preventing grid stability issues by keeping the transfer localized
Solution Approach 2:
The patent implements local quality by enabling power transfer to occur at the local peer level rather than through the centralized grid system. Each peer can independently manage its RESS events by transferring power to neighboring peers, improving local safety without affecting overall grid stability
Data Source
AI summary
A system and method includes receiving a depletion request from a host peer connected to a peer communications network, the depletion request indicating that the host peer is experiencing a rechargeable energy storage system (RESS) event and including a desired power to discharge and a duration of the discharge. The system and method also include identifying one or more recipient peers each connected to the peer communications network, each recipient peer having an availability to accept the discharge, and executing the depletion request by instructing the host peer to discharge the power and the one or more recipient peers to accept the discharged power simultaneously such that zero net current passes through an electrical grid in connection with the host peer and the one or more recipient peers.