Wireless Power Reception Circuit With Auto-Restart Power Switching
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Solution Overview
Problem
Wireless power reception devices face challenges in maintaining stable power supply and reliable restart of digital control circuits, especially during transitions from powered to unpowered states due to misalignment or errors, leading to increased standby power consumption and limited operational time.
Innovation Solution
A wireless power reception circuit system incorporating an electric storage device, voltage conversion circuits, a smoothing capacitor, and an external signal setting circuit to ensure continuous power supply and seamless restart of the digital control circuit, using a voltage OR circuit to select the optimal power source and an external signal for resetting the digital control circuit.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the digital control circuit is continuously powered to maintain stable operation, then reliability is improved, but standby power consumption increases
Solution Approach 1:
The power supply circuit is designed to automatically restart when power is restored, without requiring manual intervention. The circuit maintains the ability to start up when power becomes available again, eliminating the need for continuous powering while ensuring reliable operation when needed.
Solution Approach 2:
The digital control circuit and power supply system are designed to self-restart automatically when power is restored. The circuit monitors its own state and initiates restart sequences without external intervention, reducing the need for continuous monitoring and power consumption during standby states.
2Use of energy by moving object
If the digital control circuit is powered off to reduce standby power consumption, then energy efficiency is improved, but the ability to restart the circuit is lost
Solution Approach 1:
The power supply circuit is designed with preliminary restart capability built-in. When power is restored after being off, the circuit automatically initiates a restart sequence without requiring manual intervention, maintaining ease of operation while allowing power-off states for energy savings.
Solution Approach 2:
The system incorporates feedback mechanisms that monitor power status and circuit state. When power is restored, the feedback signal triggers the restart sequence, enabling automatic recovery without user intervention and maintaining operational ease while allowing power-saving modes.
3Stability of the object's composition
If the power supply voltage cannot be rapidly reduced for reset purposes, then stable power supply is maintained, but the digital control circuit cannot be forcedly reset when malfunctioning
Solution Approach 1:
The power supply system is segmented into separate control paths. One path maintains stable continuous power supply for normal operation, while another independent path provides rapid voltage reduction capability for reset purposes. This segmentation allows both stable operation and forced reset functionality to coexist without interfering with each other.
Data Source
AI summary
A wireless power reception circuit system includes a wireless power reception circuit, an electric storage device, a load unit, a digital control circuit, a voltage conversion circuit, a DC-DC converter, smoothing capacitors, a voltage OR circuit, and an external signal setting circuit for resetting the digital control circuit. An enable signal input terminal of the voltage conversion circuit is in a disabled state when the voltage conversion circuit is not controlled by the digital control circuit. The digital control circuit supplies an enable signal to the enable signal input terminal of the voltage conversion circuit when operating the voltage conversion circuit.