EV Fast Charging Station CO2 Capture Using Waste Heat
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Solution Overview
Problem
Existing methods for capturing CO2 from ambient air require substantial energy expenditure, which is inefficient and costly.
Innovation Solution
Utilizing waste heat generated during the fast charging of electric vehicles to heat filters that adsorb and release CO2, thereby reducing energy consumption and improving the energy balance of CO2 capture, using cellulose and nitrogen compounds in filters that bind and release CO2 under controlled temperature and pressure conditions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If conventional energy-intensive methods are used to capture CO2 from ambient air, then CO2 capture efficiency is improved, but energy consumption increases substantially
Solution Approach 1:
The invention converts waste heat from electric vehicle batteries during fast charging into a useful resource for CO2 capture. The thermal energy that would otherwise be dissipated is redirected to heat the filter medium, enabling CO2 release and collection without requiring additional energy input. This transforms a harmful byproduct (waste heat) into a beneficial input for the CO2 capture process.
Solution Approach 2:
The invention merges two previously separate processes: fast charging of electric vehicles and CO2 capture from ambient air. By integrating the CO2 capture system with the charging infrastructure and using the battery waste heat for filter regeneration, the system combines energy storage, thermal management, and carbon capture functions into a unified process that improves overall efficiency.
2Use of energy by stationary object
If waste heat from fast charging is utilized to heat the filter, then energy costs are reduced, but the system complexity increases
Solution Approach 1:
The filter medium serves multiple functions: it captures CO2 from ambient air during normal operation and then releases concentrated CO2 when heated by waste heat. This multi-functionality reduces the need for separate systems for CO2 capture and concentration, simplifying the overall system architecture while maintaining low energy costs.
Solution Approach 2:
The system uses its own waste heat to regenerate the filter medium, creating a self-sustaining process. The thermal energy generated during fast charging automatically becomes the heat source for CO2 release, eliminating the need for external energy inputs or complex thermal management systems.
3Productivity
If filter heating temperature is increased to release adsorbed CO2, then CO2 release efficiency is improved, but energy expenditure increases
Solution Approach 1:
The high temperatures required for effective CO2 release from the filter are achieved using waste heat from battery fast charging. This waste thermal energy, which would otherwise be lost, provides the necessary heat for desorption without requiring additional energy expenditure, enabling efficient CO2 release at no extra energy cost.
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 approach enables efficient capture and storage of CO2 with reduced energy costs, utilizing waste heat from fast charging processes to heat filters, resulting in a more sustainable and cost-effective method for CO2 capture and storage.
Implementation Method 1
ambient air is taken through a filter which adsorbs carbon dioxide
Implementation Method 2
the filter is heated in order to release the adsorbed carbon dioxide
Implementation Method 3
the waste heat produced during the fast charging of at least one electric vehicle at least at one fast charging point is utilized for the heating of the filter
Data Source
AI summary
A method is provided for a combination of CO2-capture and storage from the ambient air and fast charging of electric vehicles. A charging station for electric vehicles is also provided.