Battery Charging Circuit Control for Low-Voltage Power Delivery
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Solution Overview
Problem
Electronic devices often shut down power from batteries when the voltage drops below a certain threshold, even if the battery has available capacity, leading to premature battery depletion and reduced device usage time.
Innovation Solution
The electronic device incorporates a first and second charging circuit, a switch, a battery, a system circuit, and a processor that controls the circuits to supply power to the system circuit using the charging circuits even when the battery reaches a low-voltage state, by boosting the battery voltage and entering a buck mode to maintain power delivery.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the electronic device blocks power from the battery when voltage drops below threshold, then internal components are protected, but battery usage time is reduced due to premature power cutoff
Solution Approach 1:
The charging circuit acts as an intermediary between the battery and the system circuit. When battery voltage drops below the threshold, the charging circuit intervenes to boost the voltage and supply power to the system circuit, preventing premature shutdown while protecting the battery from deep discharge damage
Solution Approach 2:
The system changes the voltage parameter by using the charging circuit to boost the battery voltage when it drops below the threshold. This allows the system to maintain operation at voltages that would normally be too low, effectively extending the usable battery capacity range
2Duration of action of moving object
If the electronic device continues to draw power from the battery below threshold voltage, then battery capacity is fully utilized, but internal components may be damaged
Solution Approach 1:
The charging circuit serves as a protective intermediary that conditions the power before it reaches the system circuit. It boosts the low battery voltage to an acceptable level, allowing full battery utilization while preventing harmful low-voltage operation of internal components
Solution Approach 2:
The system converts the harmful low-voltage state into a beneficial extended operation mode. By detecting low battery voltage, the system activates the charging circuit to boost the voltage, turning what would be a harmful shutdown condition into an opportunity for extended usage through the charging circuit's voltage conversion capability
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 extends the battery usage time by allowing power to be supplied to the electronic device through the charging circuits even when the battery voltage is low, effectively utilizing the remaining battery capacity.
Implementation Method 1
controlling a first charging circuit to boost and output the battery voltage
Implementation Method 2
controlling a second charging circuit to enter a buck mode
Data Source
AI summary
An electronic device according to various embodiments of the disclosure may include a first charging circuit connected to a first node and a second node, a second charging circuit connected to the first node and a third node, a switch connected to the second node and the third node, a battery connected to the second node, a system circuit connected to the third node, and a processor. In addition, various embodiments may be possible.