Multi-Charge-Pump Thermal Zoning for Faster Terminal Charging
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Solution Overview
Problem
Current high-power fast charging methods limit charging speed due to overall temperature control strategies that do not fully utilize the charging performance of charge pumps, resulting in restricted charging currents and suboptimal user experience.
Innovation Solution
A multi-charge-pump charging method that divides a terminal into temperature zones based on hardware distribution, allowing for individual temperature control and determination of maximum charging currents for each zone, enabling targeted use of charge pumps to optimize charging performance while maintaining balanced temperature control.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If the number of charge pumps is increased to improve charging power, then charging speed is improved, but heat generation increases
Solution Approach 1:
The terminal is divided into multiple temperature zones based on hardware distribution, with each zone independently monitored and controlled. Temperature sensing points are strategically placed in different regions (e.g., near charge pumps, battery, processor) to create zone-specific temperature profiles, enabling localized thermal management decisions for each charge pump based on its surrounding thermal environment.
Solution Approach 2:
Different charge pumps are assigned different maximum charging currents based on the temperature characteristics of their respective zones. Charge pumps in cooler zones can operate at higher currents while those in hotter zones operate at lower currents, optimizing overall charging performance while preventing localized overheating.
2Reliability
If overall temperature control is applied to the terminal, then temperature safety is ensured, but charging performance is not fully utilized
Solution Approach 1:
The terminal is divided into multiple temperature zones based on hardware distribution, with each zone independently monitored and controlled. Temperature sensing points are strategically placed in different regions (e.g., near charge pumps, battery, processor) to create zone-specific temperature profiles, enabling localized thermal management decisions for each charge pump based on its surrounding thermal environment.
Solution Approach 2:
Different charge pumps are assigned different maximum charging currents based on the temperature characteristics of their respective zones. Charge pumps in cooler zones can operate at higher currents while those in hotter zones operate at lower currents, optimizing overall charging performance while preventing localized overheating.
3Temperature
If charging current is restricted to control temperature, then temperature management is improved, but charging efficiency decreases
Solution Approach 1:
The terminal is divided into multiple temperature zones based on hardware distribution, with each zone independently monitored and controlled. Temperature sensing points are strategically placed in different regions (e.g., near charge pumps, battery, processor) to create zone-specific temperature profiles, enabling localized thermal management decisions for each charge pump based on its surrounding thermal environment.
Solution Approach 2:
Different charge pumps are assigned different maximum charging currents based on the temperature characteristics of their respective zones. Charge pumps in cooler zones can operate at higher currents while those in hotter zones operate at lower currents, optimizing overall charging performance while preventing localized overheating.
Data Source
AI summary
A multi-charge-pump charging method includes: obtaining a temperature of each one of temperature zones in a terminal, where each one of the temperature zones includes a charging associated device, and the charging associated device is a charge pump or a battery; determining for each one of the temperature zones, based on the temperature of the temperature zone, a maximum charging current allowed by the charging associated device in the temperature zone; and determining from multiple charge pumps of the terminal, based on the maximum charging current allowed by each one of charging associated devices, a target charge pump to be used, and configuring the target charge pump for charging.