Auxiliary Power Supply Circuit with Detection for Abnormal Conditions
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Solution Overview
Problem
Conventional auxiliary power sources, such as secondary batteries or capacitors, can cause damage to other power sources when one is abnormal, leading to increased power consumption and size issues, and fail to efficiently detect abnormalities without significant overhead or power consumption.
Innovation Solution
An auxiliary power supply device with an auxiliary power state detection circuit using a resistive element and unidirectional element, like a diode, to detect shortcircuits and manage charging based on power monitoring signals, ensuring minimal power consumption and preventing damage to other power sources.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If conventional auxiliary power sources (secondary battery or capacitor) are used, then auxiliary power can be provided to prevent data loss, but power consumption is high and device size becomes too large
Solution Approach 1:
The patent changes the electrical parameters of the auxiliary power source by using a capacitor with specific capacitance value and voltage rating, combined with a detection circuit that monitors voltage levels. This allows the system to provide sufficient auxiliary power for data loss prevention while consuming minimal energy during normal operation and detection phases.
2Reliability
If conventional auxiliary power sources are used, then auxiliary power can be provided, but device size becomes too large for some applications
Solution Approach 1:
The patent selects a capacitor with optimized capacitance and voltage parameters that provide sufficient energy storage for data loss prevention while maintaining a compact form factor. The detection circuit is designed with minimal component count to reduce overall device volume.
3Device complexity
If auxiliary power source state is not detected, then device complexity is low, but other auxiliary power sources may be damaged when one is abnormal
Solution Approach 1:
The patent introduces a detection circuit as an intermediary component that monitors the auxiliary power source state without adding significant complexity. The circuit uses a voltage divider network and comparison logic to detect abnormal conditions, enabling protection of other power sources while maintaining simple overall system architecture.
4Reliability
If auxiliary power source state is detected with additional circuits, then reliability is improved, but power consumption and device overhead increase
Solution Approach 1:
The detection circuit is designed to monitor the auxiliary power source state using minimal external power, largely utilizing the existing power source itself for detection operations. The voltage detection mechanism uses the auxiliary power source's own voltage levels to drive the detection logic, reducing additional power consumption.
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
The solution effectively detects abnormal conditions in auxiliary power sources with low power consumption, preventing damage and ensuring reliable operation by managing charging and power supply efficiently, thus enhancing the reliability of electronic systems.
Implementation Method 1
the unidirectional element can be a diode
Data Source
AI summary
An auxiliary power supply device can include an auxiliary power source configured to provide auxiliary power. An auxiliary power state detection circuit electrically can be coupled to an input or an output of the auxiliary power source and an auxiliary power supply circuit that can be electrically coupled to the output of the auxiliary power source, where the auxiliary power supply circuit can be configured to provide the auxiliary power to a target system when power supplied to the target system by a main power source is abnormal. Related systems are also disclosed.