RTC Power Supply Voltage Switching for Device Simplification
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Solution Overview
Problem
The complexity and increased cost of manufacturing electronic devices due to the need for dedicated RTC batteries in thinner and lighter designs, which occupy internal space and require manual time settings.
Innovation Solution
A power supplying method and system that detects the voltage of a power supplying battery and switches from a first state where both the RTC and power-on circuits are powered to a second state where only the RTC circuit is powered, using a regulator and power switch to conserve energy and reduce hardware requirements.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a dedicated RTC battery is provided for the RTC circuit, then the system clock remains consistent and accurate, but the internal space of the electronic device is occupied and manufacturing cost increases
Solution Approach 1:
The patent merges the RTC circuit with the main power management system by using the existing power supplying battery and regulator to power the RTC circuit, eliminating the need for a separate dedicated RTC battery. The RTC circuit is integrated into the main circuit board and shares power supply infrastructure with other components.
Solution Approach 2:
The power supplying battery is designed to serve multiple functions: it powers both the main operational circuits and the RTC circuit simultaneously. The regulator is configured to provide appropriate voltage levels to different circuits from a single battery source, making the battery a universal power source for multiple subsystems.
2Ease of operation
If a dedicated RTC battery is provided, then manual time setting operations are eliminated, but manufacturing cost increases
Solution Approach 1:
The patent combines the RTC circuit with the main power management infrastructure, allowing the same battery and regulator system to serve both the RTC function and main operational circuits. This integration eliminates the need for separate RTC battery installation procedures during manufacturing.
Solution Approach 2:
The patent extracts the dedicated RTC battery component from the system and replaces it with the existing power supplying battery, removing the unnecessary element while retaining the essential function of automatic timekeeping.
3Weight of moving object
If the electronic device is made thinner and lighter, then portability is improved, but internal space becomes limited
Solution Approach 1:
The patent merges multiple power supply functions into a single battery system, eliminating the need for separate RTC battery space. This consolidation frees up internal space that can be used to reduce device thickness or weight while maintaining all necessary functions.
Solution Approach 2:
The patent removes the dedicated RTC battery from the device architecture, extracting this unnecessary component to free up internal space. The RTC circuit instead uses power from the main battery, eliminating the space occupation issue.
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 simplifies the internal structure of electronic devices, reduces manufacturing costs, and allows the RTC circuit to operate independently for extended periods without additional batteries, optimizing space utilization and power consumption.
Implementation Method 1
a regulator connected to the power supplying battery and configured to convert the power supply voltage into a stable operating voltage
Data Source
AI summary
The present disclosure discloses a power supplying method, a power supplying system, and an electronic device to address the technical problems in the related art that the structure of an electronic device is complex, thereby achieving the technical effect that the internal structure of an electronic device is simplified and the cost for manufacturing the electronic device is reduced. The method comprises: detecting and acquiring current voltage of a power supplying battery in an electronic device as a first voltage if the power supplying battery is in a first power supplying state where a first operational circuit comprising a Real-Time Clock (RTC) and a second operational circuit are supplied with power, wherein the power supplying battery is connected to the first operational circuit and the second operational circuit via a regulator, and wherein the second operational circuit is a power-on circuit comprising a power switch; determining whether the first voltage is lower than a preset voltage to acquire a determination result; and controlling the power supplying battery to switch from the first power supplying state to a second power supplying state where only the first operational circuit is supplied with power if the determination result is yes.