Parallel Battery Pack Flash Charging With External Resistance
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Solution Overview
Problem
Flash charging techniques often cause excessive heat buildup in battery-operated devices, limiting their usability and requiring custom adapters, and are typically limited to single battery devices, restricting runtime and computational capabilities.
Innovation Solution
A multi-battery flash charging system with an externally located charge voltage regulator and high resistance wire connects to multiple battery units within a device, dynamically adjusting charge voltages to balance state of charge and minimize power loss.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Speed
If flash charging is implemented using a custom charging adapter, then charging speed is improved, but device complexity and requirement for custom adapters increases
Solution Approach 1:
A high resistance wire is introduced as an intermediary component between the power source and the battery pack. This wire acts as a current-limiting element that enables flash charging functionality through a standard USB-C adapter, eliminating the need for custom charging adapters while maintaining rapid charging capabilities.
Solution Approach 2:
The system changes the electrical parameters of the charging circuit by introducing a controlled resistance element. This resistance parameter modification allows the system to operate in flash charging mode using standard adapters, transforming the charging characteristics without requiring custom hardware.
2Loss of time
If flash charging is used to rapidly charge the battery, then charging time is reduced, but heat generation increases causing device temperature to rise
Solution Approach 1:
The high resistance wire is positioned externally or in a location separated from the battery pack housing. This extraction of the heat-generating component from the main device body allows rapid charging to occur while the heat is dissipated away from the device, maintaining acceptable temperature profiles during flash charging.
Solution Approach 2:
The high resistance wire serves as a mediator that enables rapid charging while managing heat generation. By positioning this intermediary component externally, the system achieves fast charging without transferring excessive heat to the device housing and battery components.
3Duration of action of moving object
If a single battery is used in the device, then device simplicity is maintained, but runtime and computational abilities are limited
Solution Approach 1:
The battery system is segmented into multiple distributed battery units instead of using a single battery. This segmentation allows the device to achieve extended runtime and enhanced computational capabilities by utilizing multiple battery cells in parallel, while the external high resistance wire management keeps the overall system complexity manageable.
4Duration of action of moving object
If multiple distributed battery units are used, then runtime and computational capabilities are extended, but power charging loss increases
Solution Approach 1:
The high resistance wire acts as a current-distributing intermediary that connects the power source to multiple distributed battery units. By carefully selecting the resistance value, the system optimizes current distribution across all battery units, minimizing power losses while effectively charging all batteries in parallel during flash charging operations.
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 configuration maintains stable temperature profiles, extends device runtime, and supports multiple battery charging, enhancing computational capabilities while reducing power loss within the device.
Implementation Method 1
transmitting the charge voltage over a high resistance wire that couples the charge voltage regulator to the battery-operated device
Data Source
AI summary
A multi-battery flash charging system is described herein. The system is configured to reduce a power charging loss at a battery-operated device. This device includes multiple, distributed batteries. The process of reducing the power charging loss at the battery-operated device is achieved by generating a charge voltage at a charge voltage regulator that is required to be located externally relative to a housing of the battery-operated device. Reducing the power charging loss at the battery-operated device is further achieved by transmitting the charge voltage over a high resistance wire that couples the charge voltage regulator to the battery-operated device.