Wireless Modular Power Packs for Rapid EV Charging
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Solution Overview
Problem
Electric vehicles and aircraft face challenges with long battery charging times, which lead to range anxiety and increased battery degradation, and existing solutions like battery swapping are impractical due to complexity, safety concerns, and weight issues.
Innovation Solution
A wirelessly enabled and distributed energy storage system (WEDES) that uses modular power packs with wireless power transmission and reception, allowing for independent module removal and recharging without interrupting power supply, and includes a control unit for managing power distribution and health monitoring.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of time
If conventional wired charging is used, then charging can be performed, but charging time is excessively long (8 hours for full size EV)
Solution Approach 1:
The patent replaces the mechanical wired connection system with a wireless electromagnetic field-based power transfer system. The wireless power transfer system uses electromagnetic coupling between transmitter and receiver coils to transfer power without physical contact, eliminating the need for plugging and unplugging charging cables and enabling faster power transfer rates.
Solution Approach 2:
The patent employs magnetic resonance technology where transmitter and receiver coils are tuned to resonate at the same frequency. This resonant coupling dramatically improves power transfer efficiency and enables faster charging speeds compared to conventional inductive charging methods.
2Productivity
If fast charging is implemented, then charging speed increases, but battery lifetime decreases and heat generation increases
Solution Approach 1:
The patent implements dynamic power adjustment where the charging rate is continuously optimized based on real-time battery state monitoring. The system adjusts power delivery to maintain optimal charging speed while preventing excessive heat generation and battery stress, thereby extending battery lifetime.
Solution Approach 2:
The system incorporates feedback mechanisms that monitor battery temperature, voltage, and state of charge in real-time. Based on this feedback, the power delivery is dynamically adjusted to prevent overheating and overcharging, ensuring safe and sustainable fast charging that preserves battery health.
3Loss of time
If battery swapping is implemented, then charging time is reduced, but system complexity and safety concerns increase
Solution Approach 1:
The patent replaces the complex mechanical battery swapping system with a streamlined wireless charging system. Instead of requiring physical battery pack removal and replacement with complex electrical and mechanical connections, the system uses contactless wireless power transfer to recharge batteries in place, dramatically simplifying the overall system architecture.
Solution Approach 2:
The patent extracts the power transfer function from the mechanical connection system, separating the energy transfer mechanism from the physical battery handling. This allows power to be transferred wirelessly while the battery remains in the vehicle, eliminating the need for complex swapping infrastructure.
4Ease of operation
If wireless charging pad is used, then convenience is improved, but charging speed does not increase
Solution Approach 1:
The patent applies magnetic resonance technology where transmitter and receiver coils are tuned to resonate at the same frequency. This resonant coupling dramatically improves power transfer efficiency and enables faster charging speeds compared to conventional inductive charging pads, while maintaining the convenience of wireless operation.
Solution Approach 2:
The system optimizes key parameters including coil geometry, winding density, magnetic core material, and resonant frequency to maximize power transfer efficiency. By carefully tuning these parameters, the system achieves both high charging speed and good wireless convenience.
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
Enables efficient, safe, and rapid charging of batteries in electric vehicles and aircraft, reducing range anxiety and extending battery life by minimizing charging time and handling complexities through wireless power transfer and smart energy management.
Implementation Method 1
a first wireless power transmission circuit (102) directing a wireless power signal to a second wireless power receiver circuit (103)
Data Source
AI summary
Wirelessly distributed and multi-directional power transfer systems and related methods are described herein. An example system for distributing power across a wireless medium can include a plurality of wireless modular power packs connected across a wireless medium to a wireless power receiver circuit that is connected to a load. Each wireless modular power pack can include a respective wireless power transmission circuit directing a respective wireless power signal to the wireless power receiver circuit. The system can also include a power source positioned within each of the wireless modular power packs. Each power source transmits a respective power signal across an internal power interface to a respective wireless power transmission circuit within a respective wireless modular power pack.