EV Charging Station Battery Bank Grid Isolation
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Solution Overview
Problem
Electric vehicle recharging stations face challenges due to an aging civilian/commercial grid that is vulnerable to disruptions, leading to concerns about power outages and long recharging intervals, and existing high-rate recharging methods put strain on the grid, risking grid failure.
Innovation Solution
An electric vehicle recharging station with a battery bank that stores energy from the primary power source, allowing for high-rate recharging of onboard batteries while isolating the primary power source from high-rate events, and integrating temperature management using heat exchange fluid to optimize recharging rates and safety.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If high-rate recharging is applied to onboard batteries, then recharging speed is improved, but strain on the power grid increases risking grid failure
Solution Approach 1:
A battery bank is introduced as an intermediary energy storage system between the power grid and onboard batteries. The battery bank absorbs high-rate discharge demands during vehicle recharging, preventing direct high-rate stress on the power grid while enabling fast recharging of vehicles. The grid only experiences controlled, lower-rate charging of the battery bank.
Solution Approach 2:
The battery bank is pre-charged from the power grid during periods of low demand or off-peak hours. This preliminary energy storage allows the system to later provide high-rate discharge to onboard batteries when needed, decoupling the timing of grid charging from vehicle recharging events and preventing grid overload.
2Productivity
If the power grid directly recharges onboard batteries at high power, then recharging efficiency is improved, but the aging grid becomes vulnerable to disruption
Solution Approach 1:
The battery bank serves as a protective intermediary that shields the aging power grid from high-rate discharge stresses. Instead of the grid directly powering high-rate vehicle recharging, the battery bank handles the high-power transfer, reducing thermal and electrical stress on grid infrastructure and minimizing disruption risks.
3Productivity
If rapid recharging is performed without temperature management, then recharging speed is improved, but thermal safety is compromised
Solution Approach 1:
A heat exchange fluid system acts as a thermal intermediary, transferring heat away from onboard batteries during rapid recharging. The fluid circulation system provides active cooling, enabling high-rate charging while maintaining thermal safety through continuous heat removal from the battery packs.
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
This solution provides efficient, safe, and cost-effective high-rate energy transfer to electric vehicles, mitigating grid disruption risks and ensuring reliable recharging, even during peak usage, by using a battery bank to absorb and distribute energy, thus preventing grid overload.
Implementation Method 1
a battery bank including one or more rechargeable charging batteries for rapidly recharging the onboard electric vehicle battery
Implementation Method 2
a temperature management system providing heat exchange fluid to both the onboard electric vehicle battery and the battery bank to thermally condition the onboard electric vehicle battery and the battery bank
Data Source
AI summary
An electric vehicle recharging station is provided. The electric vehicle recharging station includes an electric power supply system for rapidly recharging an onboard electric vehicle battery. The electric power supply system includes a first energy source and a battery bank including one or more rechargeable charging batteries for rapidly recharging the onboard electric vehicle battery. The electric vehicle recharging station also includes a temperature management system providing heat exchange fluid to both the onboard electric vehicle battery and the battery bank to thermally condition the onboard electric vehicle battery and the battery bank. A method of recharging onboard electric vehicle batteries is also provided.