Load Power Supply Circuit with Dynamic Step-Up Control
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Solution Overview
Problem
The development of battery technology and new materials has resulted in lower shutdown voltages for batteries, leading to battery electric power waste as voltages between 2.7 V and 3.3 V or 2.7 V and 3.5 V cannot be utilized, causing inefficiency in powering loads that require 3.3 V to 3.5 V.
Innovation Solution
A load power supply circuit comprising a charging manager and a step-up circuit, where the charging manager controls the connection between the battery and load, disconnecting the step-up circuit at higher voltages and connecting it at lower voltages to boost the voltage and ensure all components in the load can function normally, thereby fully utilizing battery power at low voltage levels.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Duration of action of moving object
If battery shutdown voltage is reduced to 2.7 V to extend battery life, then battery capacity utilization is improved, but load cannot operate normally because load requires 3.3 V to 3.5 V
Solution Approach 1:
A step-up circuit is introduced as an intermediary component between the battery and the load. This circuit boosts the battery voltage from low voltage levels (2.7-3.3 V) to the required load operating voltage (3.3-3.5 V), enabling the load to operate normally while the battery can be discharged to its full capacity down to 2.7 V shutdown voltage.
Solution Approach 2:
The step-up circuit dynamically changes the voltage parameter from the battery output to match the load requirements. By adjusting the voltage transformation ratio, the circuit ensures the load receives stable 3.3-3.5 V operation while the battery operates at optimized low voltage levels to maximize capacity utilization.
2Use of energy by moving object
If step-up circuit is always connected to utilize low voltage battery power, then battery capacity utilization is improved, but system load increases
Solution Approach 1:
The step-up circuit is designed with dynamic switching capability controlled by the charging manager. The circuit is automatically connected when battery voltage drops below the load's operating threshold and disconnected when battery voltage recovers to normal levels. This dynamic operation allows the system to utilize low voltage battery power only when necessary, avoiding unnecessary system load during normal battery operation.
Solution Approach 2:
The charging manager autonomously monitors battery voltage levels and automatically controls the connection state of the step-up circuit without requiring external intervention. This self-service mechanism ensures the step-up circuit is activated only when battery voltage is insufficient for load operation, optimizing both power utilization and system load management.
3Productivity
If charging manager controls step-up circuit connection based on battery voltage, then power supply efficiency is improved, but control complexity increases
Solution Approach 1:
The charging manager is designed to perform multiple functions: it monitors battery voltage levels, controls the step-up circuit connection state, and manages overall power supply operations. By consolidating these functions into a single controller, the system achieves high power supply efficiency through coordinated control while avoiding the complexity of multiple separate control circuits.
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 allows for the full utilization of battery power at low voltage levels, improving the load's working efficiency and prolonging the standby time of mobile communications terminals without increasing system load.
Implementation Method 1
a step-up circuit includes a first end, a second end, and a control end, the first end of the step-up circuit is electrically connected to the load, the second end of the step-up circuit is electrically connected to the battery
Data Source
AI summary
Embodiments of the present invention relate to the battery monitoring field, and provide a load power supply circuit and a terminal. The load power supply circuit includes a charging manager and a step-up circuit. The charging manager includes a first pin, a second pin, and a third pin. The first pin of the charging manager is electrically connected to a load, and the second pin of the charging manager is electrically connected to a battery. The step-up circuit includes a first end, a second end, and a control end. The first end of the step-up circuit is electrically connected to the load, the second end of the step-up circuit is electrically connected to the battery, and the control end of the step-up circuit is electrically connected to the third pin of the charging manager.