Wireless Charging Cart Thermal Management
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Solution Overview
Problem
Wireless power delivery systems face challenges in efficiently managing heat dissipation and power distribution to multiple devices, leading to potential overheating and uneven power allocation.
Innovation Solution
The implementation of a wireless charging pad with convection cooling and thermal control mechanisms, including inclined surfaces for airflow, thermally conductive magnetic shields, and heat pipes, along with a wireless power system that dynamically adjusts power levels based on device feedback and thermal sensors to maintain optimal operating temperatures and efficient power transfer.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If wireless power delivery systems transmit power to multiple devices simultaneously, then power distribution capability is improved, but heat dissipation becomes insufficient leading to overheating
Solution Approach 1:
The system segments the wireless charging space into multiple independent charging zones, each with its own power transmission coil. This allows simultaneous power delivery to multiple devices while distributing heat generation across separate zones, preventing concentrated overheating in any single area
Solution Approach 2:
The patent introduces an intelligent control system as an intermediary that dynamically monitors temperature sensors and power consumption across all charging zones. This mediator adjusts power allocation in real-time, reducing power to zones approaching thermal limits while maintaining optimal charging in cooler zones, thus balancing heat dissipation with power distribution efficiency
2Speed
If power levels are increased to charge multiple devices faster, then charging speed is improved, but thermal management becomes insufficient causing safety issues
Solution Approach 1:
The system employs dynamic power adjustment where each charging zone's power level is continuously adapted based on real-time temperature readings and device charging status. This allows the system to operate at high power speeds when thermal conditions permit, while automatically reducing power when temperature thresholds are approached, maintaining both charging speed and thermal safety
Solution Approach 2:
The patent implements a feedback mechanism where temperature sensors continuously monitor thermal conditions in each charging zone and feed this information back to the control system. The control system then adjusts power transmission levels accordingly, creating a closed-loop system that maintains charging speed within safe thermal boundaries by responding to actual thermal conditions
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 effectively manages heat dissipation through passive convection cooling and thermal control, ensuring safe operating temperatures and efficient power distribution to multiple devices, enhancing the reliability and performance of wireless charging systems.
Implementation Method 1
an antenna utilizing a heat pipe to conduct heat away from the antenna
Implementation Method 2
thermally conductive magnetic shield
Implementation Method 3
wireless charging pad with convection cooling and thermal control mechanisms, including inclined surfaces for airflow
Data Source
AI summary
A cart stores a plurality of mobile computing devices. The cart includes a plurality of slots defined by opposed plates. Each of the slots is configured to accept a corresponding mobile computing device. Each of the plates includes a first transmit coil for wirelessly transmitting power to a receive coil in the corresponding mobile computing device.