Backup Voltage Generation Using Series-Connected Capacitors
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Solution Overview
Problem
Existing electrical devices for generating backup voltage in information processing systems, such as electronic radio communication sets, require rapid battery replacement due to short backup duration provided by capacitors, which is both costly and time-constraining, and increasing capacitor capacity or battery voltage reduces operating time.
Innovation Solution
An electrical generation device with two capacitors connected in series during battery replacement, doubling the output voltage without the need for a larger capacitor, allowing for extended battery change time without degrading battery operation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Duration of action of moving object
If a capacitor with larger capacitance is used to extend backup voltage duration, then the time available for battery replacement is increased, but the cost and size of the capacitor are significantly increased
Solution Approach 1:
The single large-capacitance capacitor is segmented into multiple smaller capacitors (first capacitor and second capacitor) that can be connected in series. This segmentation allows the system to achieve the required voltage duration without using a single large, costly capacitor, thereby resolving the contradiction between extended backup duration and reduced component size/cost.
Solution Approach 2:
The invention transitions from a single-capacitor architecture to a multi-capacitor series configuration, adding a dimensional aspect to the circuit design. By connecting capacitors in series, the system achieves higher equivalent capacitance for voltage maintenance without increasing individual capacitor size, thus extending backup duration while controlling component dimensions and cost.
2Duration of action of moving object
If the battery voltage is increased to extend operating time, then the backup voltage duration is improved, but the battery's operating time is significantly reduced
Solution Approach 1:
The capacitors are charged in advance during periods when the battery voltage is high (normal operation). This preliminary charging stores energy that can be used later when the battery voltage drops, allowing the system to extend backup voltage duration without depleting the battery prematurely, thus resolving the contradiction between backup duration and battery operating time.
Solution Approach 2:
The system maintains continuous useful action by switching between battery power and capacitor power seamlessly. The capacitors provide continuous backup voltage support during battery replacement without interrupting the powered device's operation, ensuring uninterrupted functionality while managing battery life effectively.
3Duration of action of moving object
If a single large capacitor is used to provide backup voltage, then the backup voltage duration is extended, but the device complexity and cost are increased
Solution Approach 1:
The single large capacitor is divided into multiple smaller capacitors with individual capacitances that, when connected in series, provide the equivalent total capacitance needed for extended backup duration. This segmentation reduces the quantity of capacitive material required in any single component while achieving the same overall backup duration, thereby resolving the contradiction between backup duration and capacitor capacity quantity.
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
Significantly increases the time available for battery replacement while maintaining adequate backup voltage, reducing the need for larger capacitors and preserving battery life, facilitating safer and less urgent battery changes.
Implementation Method 1
a first capacitor, designated with reference numeral 28, and a second capacitor, designated with reference numeral 30, each electrically connected to said output terminal 24
Implementation Method 2
a diode, designated with reference numeral 26, electrically connected between said input terminal 22 and said output terminal 24 in the forward direction from said input terminal 22 to said output terminal 24
Data Source
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AI summary
This electrical device (18) for generating a backup voltage for an information processing unit comprises an input terminal (22) receiving an input voltage (UE), an output terminal (24) delivering an output voltage (US) to said processing unit, a diode (26) connected between the input and output terminals, and a first capacitor (28) connected to the output terminal. This device (18) further comprises a second capacitor (30) connected to the output terminal, and a switching module (32) configured to switch between a first configuration in which the first and second capacitors (28, 30) are connected in parallel and a second configuration in which the first and second capacitors are connected in series, said capacitors delivering, in the second configuration, the output voltage at the output terminal (24).