Battery Charging Power Dissipation Control Circuit
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Solution Overview
Problem
Conventional rechargeable battery charging methods result in significant heat dissipation, making devices uncomfortable to use during charging, and potentially leading to battery damage or user safety issues due to excessive temperature.
Innovation Solution
A system and method for controlled power dissipation during battery charging, utilizing a charge control circuitry that monitors and regulates charger voltage and current to maintain safe power levels, comprising a charger, charge control circuitry, voltage and current monitoring circuits, and decision circuitry to adjust the battery current based on a controlled equation, reducing heat dissipation and improving charging efficiency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If conventional battery charging methods are used, then charging speed is improved, but heat dissipation increases causing discomfort and safety issues
Solution Approach 1:
The patent implements dynamic charging current adjustment based on real-time temperature monitoring. The system transitions from static fixed-current charging to dynamic variable-current charging, where the charging current is continuously adjusted according to the battery temperature state, thereby resolving the contradiction between charging speed and heat dissipation.
Solution Approach 2:
The patent employs a feedback control mechanism where temperature sensors continuously monitor battery temperature and feed this information back to the charging control circuit. The control circuit then adjusts the charging current accordingly, creating a closed-loop system that balances charging efficiency with thermal management.
2Loss of time
If high current charging is applied, then charge time is reduced, but power dissipation increases causing battery damage risk
Solution Approach 1:
The system dynamically adjusts charging current based on battery state of charge and temperature conditions. During early charging stages when the battery can accept higher currents, the system applies higher current to reduce charge time. As the battery approaches full charge or experiences temperature rise, the current is automatically reduced, preventing overheating and ensuring battery safety.
Solution Approach 2:
The patent changes the charging current parameter dynamically throughout the charging process. The system transitions from constant high current charging to variable current charging, adjusting the current parameter based on real-time battery conditions, thereby achieving both fast charging and safety.
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 approach allows for comfortable device use during charging, reduces charge time, and enhances safety by controlling power dissipation within safe limits, preventing battery damage and improving component performance.
Implementation Method 1
controlling the power dissipation produced by a device when its battery is charged
Implementation Method 2
utilizing a charge control circuitry that monitors and regulates charger voltage and current
Data Source
AI summary
Herein described are at least methods and systems to control power dissipation while charging a device. In a representative embodiment, the method comprises first monitoring a first voltage output by a charger used for said charging a battery of a device, second monitoring a second voltage at the battery, first determining a first current based on a power dissipation value associated with the device, the first voltage, and the second voltage, second determining a minimum of the first current and a second current, wherein the second current equals the maximum charging current during a typical charge cycle of the device, and applying a control signal to a control circuit to generate the minimum, wherein the control circuit is communicatively coupled to the charger at a first port, and the battery at a second port. An exemplary system comprises one or more circuits operable for, at least performing the aforementioned method.