Power Supply Module Bypassing Switching Circuit for Efficiency
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Solution Overview
Problem
Conventional power supply systems for portable electronic devices experience high power loss due to repeated electrical energy conversion, leading to lower conversion efficiency, especially when the load is heavy or the power storage unit is fully charged.
Innovation Solution
A power supply module with a switching power circuit, a switching unit, and a control unit that detects the charging or discharging status of the power storage unit to selectively turn on/off the switching unit, reducing unnecessary power conversion and enhancing overall system efficiency by bypassing the switching power supply circuit when the load is heavy or the power storage unit is fully charged.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of energy
If the switching power circuit is used for power conversion, then the power storage unit can be charged, but power loss increases due to repeated electrical energy conversion
Solution Approach 1:
The patent implements dynamic switching between two power supply paths based on real-time detection of charging status. The control unit monitors the power storage unit's state and dynamically selects either the direct power supply path or the switching power circuit path, making the system adaptable to different operating conditions to minimize energy loss.
Solution Approach 2:
The patent extracts the switching power circuit from the mandatory power supply path and makes it optional. By providing a parallel direct power supply path that bypasses the switching power circuit, the system can eliminate unnecessary power conversion steps when the power storage unit is fully charged or when direct power supply is sufficient, thereby reducing power loss.
2Power
If the switching power circuit is used to convert voltage, then the power storage unit can be charged, but the current output is limited by the inductance flow limit
Solution Approach 1:
The system dynamically adjusts the power supply path based on current demands and charging status. When high current is needed and the power storage unit is fully charged, the control unit switches to the direct power supply path which can deliver higher current without being constrained by the inductance flow limit of the switching power circuit.
Solution Approach 2:
The control unit acts as an intermediary that intelligently routes power flow between two paths: one through the switching power circuit with inductance current limits, and another direct path capable of higher current output. This mediation allows the system to overcome the current limitations of the switching power circuit when necessary.
3Productivity
If the switching unit is always on to provide direct power, then current output is high, but the power storage unit cannot be charged when voltage conversion is needed
Solution Approach 1:
The switching unit's state is dynamically controlled based on real-time detection of charging status. When voltage conversion and charging are needed, the switching unit turns on to enable power flow through the switching power circuit. When the power storage unit is fully charged or direct power supply is sufficient, the switching unit turns off to enable high-efficiency direct power delivery.
Solution Approach 2:
The system employs feedback through the detecting signal that continuously monitors the power storage unit's charging status. This feedback information is used by the control unit to make real-time decisions about the switching unit's state, ensuring the system adapts to maintain both charging capability when needed and high efficiency when the storage unit is full.
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 reduces power loss and increases conversion efficiency by minimizing unnecessary power conversion, providing greater current output directly to the load and reducing the burden on the inductance in the switching power supply circuit, making the power supply more efficient and resilient.
Implementation Method 1
a switching power circuit, coupled between an input terminal and an output terminal, configured to convert a first voltage to a second voltage
Data Source
AI summary
The power supply module includes a switching power circuit, a switching unit, a power storage unit and a control unit. The switching power circuit is coupled between an input terminal and an output terminal, and used to convert a first voltage to a second voltage. The switching unit is connected to the switching power circuit in parallel. The power storage unit is coupled to the output terminal. The control unit is coupled to the switching unit and controls the switching unit to turn on selectively according to a detecting signal corresponding to a charging or discharging status of the power storage unit to output the first voltage to the output terminal.