Power Delivery System Turbo Mode Thermal Management
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Solution Overview
Problem
The existing power delivery systems for electronic devices face challenges in managing turbo power modes, where high power spikes exceed thermal design limits, leading to system shutdowns or limited performance due to insufficient battery capacity and adapter limitations.
Innovation Solution
A power delivery system with an embedded controller that dynamically controls power levels and charging currents, using a Hybrid Power Boost (HPB) circuit and Proportional-Integral-Differential (PID) compensator to limit input current and prevent over-discharge, allowing for flexible control of processor performance and battery charging based on battery conditions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If turbo power mode is activated to achieve high performance, then processor speed and system performance are improved, but power consumption exceeds thermal design limits causing system shutdowns
Solution Approach 1:
The system dynamically adjusts power delivery based on real-time battery conditions. The embedded controller monitors battery charge levels and dynamically modifies the power profile delivered to the processor, enabling turbo mode when battery capacity is sufficient and transitioning to power-saving modes when battery levels are low, thus preventing thermal shutdowns while maximizing performance opportunities
Solution Approach 2:
The patent changes the power delivery parameters dynamically based on battery state. The embedded controller modifies voltage, current, and power allocation parameters in real-time according to battery charge levels, temperature conditions, and load requirements, allowing the system to operate in turbo mode when parameters permit and prevent overheating when they don't
2Productivity
If high power spikes are delivered to support turbo mode, then system performance is improved, but battery over-discharge and wear-out occur
Solution Approach 1:
The embedded controller implements continuous feedback monitoring of battery charge levels, voltage, and current. Based on this feedback, the system adjusts power delivery to prevent dangerous discharge rates. The controller monitors battery health metrics and modifies turbo mode activation and duration to keep discharge rates within safe thresholds, preventing both over-discharge and excessive wear
Solution Approach 2:
The system prepares compensatory power arrangements before high-power turbo operations. The embedded controller checks battery charge levels in advance and ensures sufficient headroom exists before enabling turbo mode. If battery levels are borderline, the system pre-charges the battery or limits turbo duration to prevent over-discharge, cushioning against potential battery damage before it occurs
3Power
If adapter power limits are increased to support higher power spikes, then turbo mode capability is improved, but system complexity and thermal management difficulty increase
Solution Approach 1:
The embedded controller dynamically manages power adapter utilization based on real-time conditions. Rather than requiring a high-power adapter to always operate at high power, the system adaptively adjusts power draw from the adapter according to battery charge levels, current load, and thermal conditions, simplifying thermal management while maintaining turbo capability when conditions permit
4Reliability
If power delivery is limited to prevent battery damage, then battery reliability is improved, but processor performance and system productivity decrease
Solution Approach 1:
The system implements dynamic power management that continuously adapts power delivery limits based on battery state of charge, temperature, and load conditions. The embedded controller adjusts power profiles in real-time, allowing high power delivery when battery conditions are favorable and enforcing protective limits when conditions deteriorate, thus maintaining both battery safety and processor performance
Data Source
AI summary
An electronic apparatus may include a charger device to obtain information relating to a first battery, and to set a limit of a battery charge current of a second battery based on the obtained information.